--- /dev/null
+/*
+ * Copyright (c) 2024 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// CLASS HEADER
+#include <dali-toolkit/internal/text/rendering/text-typesetter-impl.h>
+
+// EXTERNAL INCLUDES
+#include <dali/devel-api/text-abstraction/font-client.h>
+#include <dali/integration-api/debug.h>
+#include <dali/integration-api/trace.h>
+#include <dali/public-api/common/constants.h>
+#include <dali/public-api/math/math-utils.h>
+#include <memory.h>
+#include <cmath>
+
+// INTERNAL INCLUDES
+#include <dali-toolkit/devel-api/controls/text-controls/text-label-devel.h>
+#include <dali-toolkit/internal/text/character-spacing-glyph-run.h>
+#include <dali-toolkit/internal/text/glyph-metrics-helper.h>
+#include <dali-toolkit/internal/text/line-helper-functions.h>
+#include <dali-toolkit/internal/text/line-run.h>
+#include <dali-toolkit/internal/text/rendering/styles/character-spacing-helper-functions.h>
+#include <dali-toolkit/internal/text/rendering/styles/strikethrough-helper-functions.h>
+#include <dali-toolkit/internal/text/rendering/styles/underline-helper-functions.h>
+#include <dali-toolkit/internal/text/rendering/view-model.h>
+#include <dali-toolkit/internal/text/strikethrough-glyph-run.h>
+#include <dali-toolkit/internal/text/text-definitions.h>
+#include <dali-toolkit/internal/text/underlined-glyph-run.h>
+
+namespace Dali
+{
+namespace Toolkit
+{
+namespace Text
+{
+namespace
+{
+DALI_INIT_TRACE_FILTER(gTraceFilter, DALI_TRACE_TEXT_PERFORMANCE_MARKER, false);
+
+const float HALF(0.5f);
+const float ONE_AND_A_HALF(1.5f);
+
+/**
+ * @brief Fast multiply & divide by 255. It wiil be useful when we applying alpha value in color
+ *
+ * @param x The value between [0..255]
+ * @param y The value between [0..255]
+ * @return (x*y)/255
+ */
+inline uint8_t MultiplyAndNormalizeColor(const uint8_t x, const uint8_t y) noexcept
+{
+ const uint32_t xy = static_cast<const uint32_t>(x) * y;
+ return ((xy << 15) + (xy << 7) + xy) >> 23;
+}
+
+/// Helper macro define for glyph typesetter. It will reduce some duplicated code line.
+// clang-format off
+/**
+ * @brief Prepare decode glyph bitmap data. It must be call END_GLYPH_BITMAP end of same scope.
+ */
+#define BEGIN_GLYPH_BITMAP(data) \
+{ \
+ uint32_t glyphOffet = 0u; \
+ const bool useLocalScanline = data.glyphBitmap.compressionType != TextAbstraction::GlyphBufferData::CompressionType::NO_COMPRESSION; \
+ uint8_t* __restrict__ glyphScanline = useLocalScanline ? (uint8_t*)malloc(data.glyphBitmap.width * glyphPixelSize) : data.glyphBitmap.buffer; \
+ DALI_ASSERT_ALWAYS(glyphScanline && "Glyph scanline for buffer is nullptr!");
+
+/**
+ * @brief Macro to skip useless line fast.
+ */
+#define SKIP_GLYPH_SCANLINE(skipLine) \
+if(useLocalScanline) \
+{ \
+ for(int32_t lineIndex = 0; lineIndex < skipLine; ++lineIndex) \
+ { \
+ TextAbstraction::GlyphBufferData::DecompressScanline(data.glyphBitmap, glyphScanline, glyphOffet); \
+ } \
+} \
+else \
+{ \
+ glyphScanline += skipLine * static_cast<int32_t>(data.glyphBitmap.width * glyphPixelSize); \
+}
+
+/**
+ * @brief Prepare scanline of glyph bitmap data per each lines. It must be call END_GLYPH_SCANLINE_DECODE end of same scope.
+ */
+#define BEGIN_GLYPH_SCANLINE_DECODE(data) \
+{ \
+ if(useLocalScanline) \
+ { \
+ TextAbstraction::GlyphBufferData::DecompressScanline(data.glyphBitmap, glyphScanline, glyphOffet); \
+ }
+
+/**
+ * @brief Finalize scanline of glyph bitmap data per each lines.
+ */
+#define END_GLYPH_SCANLINE_DECODE(data) \
+ if(!useLocalScanline) \
+ { \
+ glyphScanline += data.glyphBitmap.width * glyphPixelSize; \
+ } \
+} // For ensure that we call BEGIN_GLYPH_SCANLINE_DECODE before
+
+/**
+ * @brief Finalize decode glyph bitmap data.
+ */
+#define END_GLYPH_BITMAP() \
+ if(useLocalScanline) \
+ { \
+ free(glyphScanline); \
+ } \
+} // For ensure that we call BEGIN_GLYPH_BITMAP before
+
+// clang-format on
+/// Helper macro define end.
+
+/**
+ * @brief Data struct used to set the buffer of the glyph's bitmap into the final bitmap's buffer.
+ */
+struct GlyphData
+{
+ Devel::PixelBuffer bitmapBuffer; ///< The buffer of the whole bitmap. The format is RGBA8888.
+ Vector2* position; ///< The position of the glyph.
+ TextAbstraction::GlyphBufferData glyphBitmap; ///< The glyph's bitmap.
+ uint32_t width; ///< The bitmap's width.
+ uint32_t height; ///< The bitmap's height.
+ int32_t horizontalOffset; ///< The horizontal offset to be added to the 'x' glyph's position.
+ int32_t verticalOffset; ///< The vertical offset to be added to the 'y' glyph's position.
+};
+
+/**
+ * @brief Sets the glyph's buffer into the bitmap's buffer.
+ *
+ * @param[in, out] data Struct which contains the glyph's data and the bitmap's data.
+ * @param[in] position The position of the glyph.
+ * @param[in] color The color of the glyph.
+ * @param[in] style The style of the text.
+ * @param[in] pixelFormat The format of the pixel in the image that the text is rendered as (i.e. either Pixel::BGRA8888 or Pixel::L8).
+ */
+void TypesetGlyph(GlyphData& __restrict__ data,
+ const Vector2* const __restrict__ position,
+ const Vector4* const __restrict__ color,
+ const Typesetter::Style style,
+ const Pixel::Format pixelFormat)
+{
+ if((0u == data.glyphBitmap.width) || (0u == data.glyphBitmap.height))
+ {
+ // Nothing to do if the width or height of the buffer is zero.
+ return;
+ }
+
+ // Initial vertical / horizontal offset.
+ const int32_t yOffset = data.verticalOffset + position->y;
+ const int32_t xOffset = data.horizontalOffset + position->x;
+
+ // Whether the given glyph is a color one.
+ const bool isColorGlyph = data.glyphBitmap.isColorEmoji || data.glyphBitmap.isColorBitmap;
+ const uint32_t glyphPixelSize = Pixel::GetBytesPerPixel(data.glyphBitmap.format);
+ const uint32_t glyphAlphaIndex = (glyphPixelSize > 0u) ? glyphPixelSize - 1u : 0u;
+
+ // Determinate iterator range.
+ const int32_t lineIndexRangeMin = std::max(0, -yOffset);
+ const int32_t lineIndexRangeMax = std::min(static_cast<int32_t>(data.glyphBitmap.height), static_cast<int32_t>(data.height) - yOffset);
+ const int32_t indexRangeMin = std::max(0, -xOffset);
+ const int32_t indexRangeMax = std::min(static_cast<int32_t>(data.glyphBitmap.width), static_cast<int32_t>(data.width) - xOffset);
+
+ // If current glyph don't need to be rendered, just ignore.
+ if(lineIndexRangeMax <= lineIndexRangeMin || indexRangeMax <= indexRangeMin)
+ {
+ return;
+ }
+
+ if(Pixel::RGBA8888 == pixelFormat)
+ {
+ uint32_t* __restrict__ bitmapBuffer = reinterpret_cast<uint32_t*>(data.bitmapBuffer.GetBuffer());
+ // Skip basic line.
+ bitmapBuffer += (lineIndexRangeMin + yOffset) * static_cast<int32_t>(data.width);
+
+ // Fast-cut if style is MASK or OUTLINE. Outline not shown for color glyph.
+ // Just overwrite transparent color and return.
+ if(isColorGlyph && (Typesetter::STYLE_MASK == style || Typesetter::STYLE_OUTLINE == style))
+ {
+ for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
+ {
+ // We can use memset here.
+ memset(bitmapBuffer + xOffset + indexRangeMin, 0, (indexRangeMax - indexRangeMin) * sizeof(uint32_t));
+ bitmapBuffer += data.width;
+ }
+ return;
+ }
+
+ const bool swapChannelsBR = Pixel::BGRA8888 == data.glyphBitmap.format;
+
+ // Precalculate input color's packed result.
+ uint32_t packedInputColor = 0u;
+ uint8_t* __restrict__ packedInputColorBuffer = reinterpret_cast<uint8_t*>(&packedInputColor);
+
+ *(packedInputColorBuffer + 3u) = static_cast<uint8_t>(color->a * 255);
+ *(packedInputColorBuffer + 2u) = static_cast<uint8_t>(color->b * 255);
+ *(packedInputColorBuffer + 1u) = static_cast<uint8_t>(color->g * 255);
+ *(packedInputColorBuffer) = static_cast<uint8_t>(color->r * 255);
+
+ // Prepare glyph bitmap
+ BEGIN_GLYPH_BITMAP(data);
+
+ // Skip basic line of glyph.
+ SKIP_GLYPH_SCANLINE(lineIndexRangeMin);
+
+ // Traverse the pixels of the glyph line per line.
+ if(isColorGlyph)
+ {
+ for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
+ {
+ BEGIN_GLYPH_SCANLINE_DECODE(data);
+
+ for(int32_t index = indexRangeMin; index < indexRangeMax; ++index)
+ {
+ const int32_t xOffsetIndex = xOffset + index;
+
+ // Retrieves the color from the color glyph.
+ uint32_t packedColorGlyph = *(reinterpret_cast<const uint32_t*>(glyphScanline + (index << 2)));
+ uint8_t* __restrict__ packedColorGlyphBuffer = reinterpret_cast<uint8_t*>(&packedColorGlyph);
+
+ // Update the alpha channel.
+ const uint8_t colorAlpha = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 3u), *(packedColorGlyphBuffer + 3u));
+ *(packedColorGlyphBuffer + 3u) = colorAlpha;
+
+ if(Typesetter::STYLE_SHADOW == style)
+ {
+ // The shadow of color glyph needs to have the shadow color.
+ *(packedColorGlyphBuffer + 2u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 2u), colorAlpha);
+ *(packedColorGlyphBuffer + 1u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 1u), colorAlpha);
+ *packedColorGlyphBuffer = MultiplyAndNormalizeColor(*packedInputColorBuffer, colorAlpha);
+ }
+ else
+ {
+ if(swapChannelsBR)
+ {
+ std::swap(*packedColorGlyphBuffer, *(packedColorGlyphBuffer + 2u)); // Swap B and R.
+ }
+
+ *(packedColorGlyphBuffer + 2u) = MultiplyAndNormalizeColor(*(packedColorGlyphBuffer + 2u), colorAlpha);
+ *(packedColorGlyphBuffer + 1u) = MultiplyAndNormalizeColor(*(packedColorGlyphBuffer + 1u), colorAlpha);
+ *packedColorGlyphBuffer = MultiplyAndNormalizeColor(*packedColorGlyphBuffer, colorAlpha);
+
+ if(data.glyphBitmap.isColorBitmap)
+ {
+ *(packedColorGlyphBuffer + 2u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 2u), *(packedColorGlyphBuffer + 2u));
+ *(packedColorGlyphBuffer + 1u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 1u), *(packedColorGlyphBuffer + 1u));
+ *packedColorGlyphBuffer = MultiplyAndNormalizeColor(*packedInputColorBuffer, *packedColorGlyphBuffer);
+ }
+ }
+
+ // Set the color into the final pixel buffer.
+ *(bitmapBuffer + xOffsetIndex) = packedColorGlyph;
+ }
+
+ bitmapBuffer += data.width;
+
+ END_GLYPH_SCANLINE_DECODE(data);
+ }
+ }
+ else
+ {
+ for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
+ {
+ BEGIN_GLYPH_SCANLINE_DECODE(data);
+
+ for(int32_t index = indexRangeMin; index < indexRangeMax; ++index)
+ {
+ // Update the alpha channel.
+ const uint8_t alpha = *(glyphScanline + index * glyphPixelSize + glyphAlphaIndex);
+
+ // Copy non-transparent pixels only
+ if(alpha > 0u)
+ {
+ const int32_t xOffsetIndex = xOffset + index;
+
+ // Check alpha of overlapped pixels
+ uint32_t& currentColor = *(bitmapBuffer + xOffsetIndex);
+ uint8_t* packedCurrentColorBuffer = reinterpret_cast<uint8_t*>(¤tColor);
+
+ // For any pixel overlapped with the pixel in previous glyphs, make sure we don't
+ // overwrite a previous bigger alpha with a smaller alpha (in order to avoid
+ // semi-transparent gaps between joint glyphs with overlapped pixels, which could
+ // happen, for example, in the RTL text when we copy glyphs from right to left).
+ uint8_t currentAlpha = *(packedCurrentColorBuffer + 3u);
+ currentAlpha = std::max(currentAlpha, alpha);
+ if(currentAlpha == 255)
+ {
+ // Fast-cut to avoid float type operation.
+ currentColor = packedInputColor;
+ }
+ else
+ {
+ // Pack the given color into a 32bit buffer. The alpha channel will be updated later for each pixel.
+ // The format is RGBA8888.
+ uint32_t packedColor = 0u;
+ uint8_t* __restrict__ packedColorBuffer = reinterpret_cast<uint8_t*>(&packedColor);
+
+ // Color is pre-muliplied with its alpha.
+ *(packedColorBuffer + 3u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 3u), currentAlpha);
+ *(packedColorBuffer + 2u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 2u), currentAlpha);
+ *(packedColorBuffer + 1u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 1u), currentAlpha);
+ *(packedColorBuffer) = MultiplyAndNormalizeColor(*packedInputColorBuffer, currentAlpha);
+
+ // Set the color into the final pixel buffer.
+ currentColor = packedColor;
+ }
+ }
+ }
+
+ bitmapBuffer += data.width;
+
+ END_GLYPH_SCANLINE_DECODE(data);
+ }
+ }
+
+ END_GLYPH_BITMAP();
+ }
+ else // Pixel::L8
+ {
+ // Below codes required only if not color glyph.
+ if(!isColorGlyph)
+ {
+ uint8_t* __restrict__ bitmapBuffer = data.bitmapBuffer.GetBuffer();
+ // Skip basic line.
+ bitmapBuffer += (lineIndexRangeMin + yOffset) * static_cast<int32_t>(data.width);
+
+ // Prepare glyph bitmap
+ BEGIN_GLYPH_BITMAP(data);
+
+ // Skip basic line of glyph.
+ SKIP_GLYPH_SCANLINE(lineIndexRangeMin);
+
+ // Traverse the pixels of the glyph line per line.
+ for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
+ {
+ BEGIN_GLYPH_SCANLINE_DECODE(data);
+
+ for(int32_t index = indexRangeMin; index < indexRangeMax; ++index)
+ {
+ const int32_t xOffsetIndex = xOffset + index;
+
+ // Update the alpha channel.
+ const uint8_t alpha = *(glyphScanline + index * glyphPixelSize + glyphAlphaIndex);
+
+ // Copy non-transparent pixels only
+ if(alpha > 0u)
+ {
+ // Check alpha of overlapped pixels
+ uint8_t& currentAlpha = *(bitmapBuffer + xOffsetIndex);
+
+ // For any pixel overlapped with the pixel in previous glyphs, make sure we don't
+ // overwrite a previous bigger alpha with a smaller alpha (in order to avoid
+ // semi-transparent gaps between joint glyphs with overlapped pixels, which could
+ // happen, for example, in the RTL text when we copy glyphs from right to left).
+ currentAlpha = std::max(currentAlpha, alpha);
+ }
+ }
+
+ bitmapBuffer += data.width;
+
+ END_GLYPH_SCANLINE_DECODE(data);
+ }
+
+ END_GLYPH_BITMAP();
+ }
+ }
+}
+
+/// Draws the background color to the buffer
+void DrawBackgroundColor(
+ Vector4 backgroundColor,
+ const uint32_t bufferWidth,
+ const uint32_t bufferHeight,
+ GlyphData& glyphData,
+ const float baseline,
+ const LineRun& line,
+ const float lineExtentLeft,
+ const float lineExtentRight)
+{
+ const int32_t yRangeMin = std::max(0, static_cast<int32_t>(glyphData.verticalOffset + baseline - line.ascender));
+ const int32_t yRangeMax = std::min(static_cast<int32_t>(bufferHeight), static_cast<int32_t>(glyphData.verticalOffset + baseline - line.descender));
+ const int32_t xRangeMin = std::max(0, static_cast<int32_t>(glyphData.horizontalOffset + lineExtentLeft));
+ const int32_t xRangeMax = std::min(static_cast<int32_t>(bufferWidth), static_cast<int32_t>(glyphData.horizontalOffset + lineExtentRight + 1)); // Due to include last point, we add 1 here
+
+ // If current glyph don't need to be rendered, just ignore.
+ if(yRangeMax <= yRangeMin || xRangeMax <= xRangeMin)
+ {
+ return;
+ }
+
+ // We can optimize by memset when backgroundColor.a is near zero
+ uint8_t backgroundColorAlpha = static_cast<uint8_t>(backgroundColor.a * 255.f);
+
+ uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer());
+
+ // Skip yRangeMin line.
+ bitmapBuffer += yRangeMin * glyphData.width;
+
+ if(backgroundColorAlpha == 0)
+ {
+ for(int32_t y = yRangeMin; y < yRangeMax; y++)
+ {
+ // We can use memset.
+ memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
+ bitmapBuffer += glyphData.width;
+ }
+ }
+ else
+ {
+ uint32_t packedBackgroundColor = 0u;
+ uint8_t* packedBackgroundColorBuffer = reinterpret_cast<uint8_t*>(&packedBackgroundColor);
+
+ // Write the color to the pixel buffer
+ *(packedBackgroundColorBuffer + 3u) = backgroundColorAlpha;
+ *(packedBackgroundColorBuffer + 2u) = static_cast<uint8_t>(backgroundColor.b * backgroundColorAlpha);
+ *(packedBackgroundColorBuffer + 1u) = static_cast<uint8_t>(backgroundColor.g * backgroundColorAlpha);
+ *(packedBackgroundColorBuffer) = static_cast<uint8_t>(backgroundColor.r * backgroundColorAlpha);
+
+ for(int32_t y = yRangeMin; y < yRangeMax; y++)
+ {
+ for(int32_t x = xRangeMin; x < xRangeMax; x++)
+ {
+ // Note : this is same logic as bitmap[y][x] = backgroundColor;
+ *(bitmapBuffer + x) = packedBackgroundColor;
+ }
+ bitmapBuffer += glyphData.width;
+ }
+ }
+}
+
+/// Draws the specified underline color to the buffer
+void DrawUnderline(
+ const uint32_t bufferWidth,
+ const uint32_t bufferHeight,
+ GlyphData& glyphData,
+ const float baseline,
+ const float currentUnderlinePosition,
+ const float maxUnderlineHeight,
+ const float lineExtentLeft,
+ const float lineExtentRight,
+ const UnderlineStyleProperties& commonUnderlineProperties,
+ const UnderlineStyleProperties& currentUnderlineProperties,
+ const LineRun& line)
+{
+ const Vector4& underlineColor = currentUnderlineProperties.colorDefined ? currentUnderlineProperties.color : commonUnderlineProperties.color;
+ const Text::Underline::Type underlineType = currentUnderlineProperties.typeDefined ? currentUnderlineProperties.type : commonUnderlineProperties.type;
+ const float dashedUnderlineWidth = currentUnderlineProperties.dashWidthDefined ? currentUnderlineProperties.dashWidth : commonUnderlineProperties.dashWidth;
+ const float dashedUnderlineGap = currentUnderlineProperties.dashGapDefined ? currentUnderlineProperties.dashGap : commonUnderlineProperties.dashGap;
+
+ int32_t underlineYOffset = glyphData.verticalOffset + baseline + currentUnderlinePosition;
+
+ const uint32_t yRangeMin = underlineYOffset;
+ const uint32_t yRangeMax = std::min(bufferHeight, underlineYOffset + static_cast<uint32_t>(maxUnderlineHeight));
+ const uint32_t xRangeMin = static_cast<uint32_t>(glyphData.horizontalOffset + lineExtentLeft);
+ const uint32_t xRangeMax = std::min(bufferWidth, static_cast<uint32_t>(glyphData.horizontalOffset + lineExtentRight + 1)); // Due to include last point, we add 1 here
+
+ // If current glyph don't need to be rendered, just ignore.
+ if((underlineType != Text::Underline::DOUBLE && yRangeMax <= yRangeMin) || xRangeMax <= xRangeMin)
+ {
+ return;
+ }
+
+ // We can optimize by memset when underlineColor.a is near zero
+ uint8_t underlineColorAlpha = static_cast<uint8_t>(underlineColor.a * 255.f);
+
+ uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer());
+
+ // Skip yRangeMin line.
+ bitmapBuffer += yRangeMin * glyphData.width;
+
+ // Note if underlineType is DASHED, we cannot setup color by memset.
+ if(underlineType != Text::Underline::DASHED && underlineColorAlpha == 0)
+ {
+ for(uint32_t y = yRangeMin; y < yRangeMax; y++)
+ {
+ // We can use memset.
+ memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
+ bitmapBuffer += glyphData.width;
+ }
+ if(underlineType == Text::Underline::DOUBLE)
+ {
+ int32_t secondUnderlineYOffset = underlineYOffset - ONE_AND_A_HALF * maxUnderlineHeight;
+ const uint32_t secondYRangeMin = static_cast<uint32_t>(std::max(0, secondUnderlineYOffset));
+ const uint32_t secondYRangeMax = static_cast<uint32_t>(std::max(0, std::min(static_cast<int32_t>(bufferHeight), secondUnderlineYOffset + static_cast<int32_t>(maxUnderlineHeight))));
+
+ // Rewind bitmapBuffer pointer, and skip secondYRangeMin line.
+ bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer()) + yRangeMin * glyphData.width;
+
+ for(uint32_t y = secondYRangeMin; y < secondYRangeMax; y++)
+ {
+ // We can use memset.
+ memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
+ bitmapBuffer += glyphData.width;
+ }
+ }
+ }
+ else
+ {
+ uint32_t packedUnderlineColor = 0u;
+ uint8_t* packedUnderlineColorBuffer = reinterpret_cast<uint8_t*>(&packedUnderlineColor);
+
+ // Write the color to the pixel buffer
+ *(packedUnderlineColorBuffer + 3u) = underlineColorAlpha;
+ *(packedUnderlineColorBuffer + 2u) = static_cast<uint8_t>(underlineColor.b * underlineColorAlpha);
+ *(packedUnderlineColorBuffer + 1u) = static_cast<uint8_t>(underlineColor.g * underlineColorAlpha);
+ *(packedUnderlineColorBuffer) = static_cast<uint8_t>(underlineColor.r * underlineColorAlpha);
+
+ for(uint32_t y = yRangeMin; y < yRangeMax; y++)
+ {
+ if(underlineType == Text::Underline::DASHED)
+ {
+ float dashWidth = dashedUnderlineWidth;
+ float dashGap = 0;
+
+ for(uint32_t x = xRangeMin; x < xRangeMax; x++)
+ {
+ if(Dali::EqualsZero(dashGap) && dashWidth > 0)
+ {
+ // Note : this is same logic as bitmap[y][x] = underlineColor;
+ *(bitmapBuffer + x) = packedUnderlineColor;
+ dashWidth--;
+ }
+ else if(dashGap < dashedUnderlineGap)
+ {
+ dashGap++;
+ }
+ else
+ {
+ //reset
+ dashWidth = dashedUnderlineWidth;
+ dashGap = 0;
+ }
+ }
+ }
+ else
+ {
+ for(uint32_t x = xRangeMin; x < xRangeMax; x++)
+ {
+ // Note : this is same logic as bitmap[y][x] = underlineColor;
+ *(bitmapBuffer + x) = packedUnderlineColor;
+ }
+ }
+ bitmapBuffer += glyphData.width;
+ }
+ if(underlineType == Text::Underline::DOUBLE)
+ {
+ int32_t secondUnderlineYOffset = underlineYOffset - ONE_AND_A_HALF * maxUnderlineHeight;
+ const uint32_t secondYRangeMin = static_cast<uint32_t>(std::max(0, secondUnderlineYOffset));
+ const uint32_t secondYRangeMax = static_cast<uint32_t>(std::max(0, std::min(static_cast<int32_t>(bufferHeight), secondUnderlineYOffset + static_cast<int32_t>(maxUnderlineHeight))));
+
+ // Rewind bitmapBuffer pointer, and skip secondYRangeMin line.
+ bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer()) + yRangeMin * glyphData.width;
+
+ for(uint32_t y = secondYRangeMin; y < secondYRangeMax; y++)
+ {
+ for(uint32_t x = xRangeMin; x < xRangeMax; x++)
+ {
+ // Note : this is same logic as bitmap[y][x] = underlineColor;
+ *(bitmapBuffer + x) = packedUnderlineColor;
+ }
+ bitmapBuffer += glyphData.width;
+ }
+ }
+ }
+}
+
+/// Draws the specified strikethrough color to the buffer
+void DrawStrikethrough(const uint32_t bufferWidth,
+ const uint32_t bufferHeight,
+ GlyphData& glyphData,
+ const float baseline,
+ const float strikethroughStartingYPosition,
+ const float maxStrikethroughHeight,
+ const float lineExtentLeft,
+ const float lineExtentRight,
+ const StrikethroughStyleProperties& commonStrikethroughProperties,
+ const StrikethroughStyleProperties& currentStrikethroughProperties,
+ const LineRun& line)
+{
+ const Vector4& strikethroughColor = currentStrikethroughProperties.colorDefined ? currentStrikethroughProperties.color : commonStrikethroughProperties.color;
+
+ const uint32_t yRangeMin = static_cast<uint32_t>(strikethroughStartingYPosition);
+ const uint32_t yRangeMax = std::min(bufferHeight, static_cast<uint32_t>(strikethroughStartingYPosition + maxStrikethroughHeight));
+ const uint32_t xRangeMin = static_cast<uint32_t>(glyphData.horizontalOffset + lineExtentLeft);
+ const uint32_t xRangeMax = std::min(bufferWidth, static_cast<uint32_t>(glyphData.horizontalOffset + lineExtentRight + 1)); // Due to include last point, we add 1 here
+
+ // If current glyph don't need to be rendered, just ignore.
+ if(yRangeMax <= yRangeMin || xRangeMax <= xRangeMin)
+ {
+ return;
+ }
+
+ // We can optimize by memset when strikethroughColor.a is near zero
+ uint8_t strikethroughColorAlpha = static_cast<uint8_t>(strikethroughColor.a * 255.f);
+
+ uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer());
+
+ // Skip yRangeMin line.
+ bitmapBuffer += yRangeMin * glyphData.width;
+
+ if(strikethroughColorAlpha == 0)
+ {
+ for(uint32_t y = yRangeMin; y < yRangeMax; y++)
+ {
+ // We can use memset.
+ memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
+ bitmapBuffer += glyphData.width;
+ }
+ }
+ else
+ {
+ uint32_t packedStrikethroughColor = 0u;
+ uint8_t* packedStrikethroughColorBuffer = reinterpret_cast<uint8_t*>(&packedStrikethroughColor);
+
+ // Write the color to the pixel buffer
+ *(packedStrikethroughColorBuffer + 3u) = strikethroughColorAlpha;
+ *(packedStrikethroughColorBuffer + 2u) = static_cast<uint8_t>(strikethroughColor.b * strikethroughColorAlpha);
+ *(packedStrikethroughColorBuffer + 1u) = static_cast<uint8_t>(strikethroughColor.g * strikethroughColorAlpha);
+ *(packedStrikethroughColorBuffer) = static_cast<uint8_t>(strikethroughColor.r * strikethroughColorAlpha);
+
+ for(uint32_t y = yRangeMin; y < yRangeMax; y++)
+ {
+ for(uint32_t x = xRangeMin; x < xRangeMax; x++)
+ {
+ // Note : this is same logic as bitmap[y][x] = strikethroughColor;
+ *(bitmapBuffer + x) = packedStrikethroughColor;
+ }
+ bitmapBuffer += glyphData.width;
+ }
+ }
+}
+
+/// Helper functions to create image buffer
+
+struct InputParameterForEachLine
+{
+ const uint32_t bufferWidth;
+ const uint32_t bufferHeight;
+ const int32_t horizontalOffset;
+
+ const Vector2& styleOffset; ///< If style is STYLE_OUTLINE, outline offset. If style is STYLE_SHADOW, shadow offset. Otherwise, zero.
+
+ const GlyphIndex fromGlyphIndex;
+ const GlyphIndex toGlyphIndex;
+
+ // Elide text info
+ const GlyphIndex startIndexOfGlyphs;
+ const GlyphIndex endIndexOfGlyphs;
+ const GlyphIndex firstMiddleIndexOfElidedGlyphs;
+ const GlyphIndex secondMiddleIndexOfElidedGlyphs;
+
+ const DevelText::VerticalLineAlignment::Type verticalLineAlignType;
+ const DevelText::EllipsisPosition::Type ellipsisPosition;
+
+ const GlyphInfo* __restrict__ hyphens;
+ const Length* __restrict__ hyphenIndices;
+ const Length hyphensCount;
+
+ const bool ignoreHorizontalAlignment : 1;
+};
+
+struct InputParameterForEachGlyph
+{
+ const Typesetter::Style style;
+ const Pixel::Format pixelFormat;
+
+ const float outlineWidth;
+
+ const float modelCharacterSpacing;
+
+ const Vector4& defaultColor; ///< The default color for the text.
+ /// Or some color which depends on style value. (e.g. ShadowColor if style is STYLE_SHADOW)
+
+ const Vector<UnderlinedGlyphRun>& underlineRuns;
+ const Vector<StrikethroughGlyphRun>& strikethroughRuns;
+ const Vector<CharacterSpacingGlyphRun>& characterSpacingGlyphRuns;
+
+ const GlyphInfo* const __restrict__ glyphsBuffer;
+ const Character* __restrict__ textBuffer;
+ const CharacterIndex* __restrict__ glyphToCharacterMapBuffer;
+
+ const Vector2* const __restrict__ positionBuffer;
+
+ const Vector4* const __restrict__ colorsBuffer;
+ const TextAbstraction::ColorIndex* const __restrict__ colorIndexBuffer;
+
+ const UnderlineStyleProperties modelUnderlineProperties;
+ const StrikethroughStyleProperties modelStrikethroughProperties;
+
+ const bool underlineEnabled : 1;
+ const bool strikethroughEnabled : 1;
+ const bool cutoutEnabled : 1;
+
+ const bool removeFrontInset : 1;
+ const bool removeBackInset : 1;
+
+ const bool useDefaultColor : 1;
+};
+
+struct OutputParameterForEachGlyph
+{
+ UnderlineStyleProperties& currentUnderlineProperties;
+
+ float& maxUnderlineHeight;
+ bool& thereAreUnderlinedGlyphs;
+
+ StrikethroughStyleProperties& currentStrikethroughProperties;
+
+ float& maxStrikethroughHeight;
+ bool& thereAreStrikethroughGlyphs;
+
+ float& currentUnderlinePosition;
+
+ float& baseline;
+ float& lineExtentLeft;
+ float& lineExtentRight;
+
+ FontId& lastFontId;
+};
+
+void CreateImageBufferForEachGlyph(TextAbstraction::FontClient fontClient, GlyphData& glyphData, GlyphIndex& glyphIndex, const GlyphIndex elidedGlyphIndex, const GlyphInfo* glyphInfo, const bool addHyphen, const InputParameterForEachGlyph& inputParamsForGlyph, OutputParameterForEachGlyph& outputParamsForGlyph)
+{
+ Vector<UnderlinedGlyphRun>::ConstIterator currentUnderlinedGlyphRunIt = inputParamsForGlyph.underlineRuns.End();
+ const bool underlineGlyph = inputParamsForGlyph.underlineEnabled || IsGlyphUnderlined(glyphIndex, inputParamsForGlyph.underlineRuns, currentUnderlinedGlyphRunIt);
+ outputParamsForGlyph.currentUnderlineProperties = GetCurrentUnderlineProperties(glyphIndex, underlineGlyph, inputParamsForGlyph.underlineRuns, currentUnderlinedGlyphRunIt, inputParamsForGlyph.modelUnderlineProperties);
+ float currentUnderlineHeight = outputParamsForGlyph.currentUnderlineProperties.height;
+
+ outputParamsForGlyph.thereAreUnderlinedGlyphs = outputParamsForGlyph.thereAreUnderlinedGlyphs || underlineGlyph;
+
+ Vector<StrikethroughGlyphRun>::ConstIterator currentStrikethroughGlyphRunIt = inputParamsForGlyph.strikethroughRuns.End();
+ const bool strikethroughGlyph = inputParamsForGlyph.strikethroughEnabled || IsGlyphStrikethrough(glyphIndex, inputParamsForGlyph.strikethroughRuns, currentStrikethroughGlyphRunIt);
+ outputParamsForGlyph.currentStrikethroughProperties = GetCurrentStrikethroughProperties(glyphIndex, strikethroughGlyph, inputParamsForGlyph.strikethroughRuns, currentStrikethroughGlyphRunIt, inputParamsForGlyph.modelStrikethroughProperties);
+ float currentStrikethroughHeight = outputParamsForGlyph.currentStrikethroughProperties.height;
+
+ outputParamsForGlyph.thereAreStrikethroughGlyphs = outputParamsForGlyph.thereAreStrikethroughGlyphs || strikethroughGlyph;
+
+ // Are we still using the same fontId as previous
+ if((glyphInfo->fontId != outputParamsForGlyph.lastFontId) && (strikethroughGlyph || underlineGlyph))
+ {
+ // We need to fetch fresh font underline metrics
+ FontMetrics fontMetrics;
+ fontClient.GetFontMetrics(glyphInfo->fontId, fontMetrics);
+
+ //The currentUnderlinePosition will be used for both Underline and/or Strikethrough
+ outputParamsForGlyph.currentUnderlinePosition = FetchUnderlinePositionFromFontMetrics(fontMetrics);
+
+ if(underlineGlyph)
+ {
+ CalcualteUnderlineHeight(fontMetrics, currentUnderlineHeight, outputParamsForGlyph.maxUnderlineHeight);
+ }
+
+ if(strikethroughGlyph)
+ {
+ CalcualteStrikethroughHeight(currentStrikethroughHeight, outputParamsForGlyph.maxStrikethroughHeight);
+ }
+
+ // Update lastFontId because fontId is changed
+ outputParamsForGlyph.lastFontId = glyphInfo->fontId; // Prevents searching for existing blocksizes when string of the same fontId.
+ }
+
+ // Retrieves the glyph's position.
+ Vector2 position = *(inputParamsForGlyph.positionBuffer + elidedGlyphIndex);
+
+ if(addHyphen)
+ {
+ GlyphInfo tempInfo = *(inputParamsForGlyph.glyphsBuffer + elidedGlyphIndex);
+ const float characterSpacing = GetGlyphCharacterSpacing(glyphIndex, inputParamsForGlyph.characterSpacingGlyphRuns, inputParamsForGlyph.modelCharacterSpacing);
+ const float calculatedAdvance = GetCalculatedAdvance(*(inputParamsForGlyph.textBuffer + (*(inputParamsForGlyph.glyphToCharacterMapBuffer + elidedGlyphIndex))), characterSpacing, tempInfo.advance);
+ position.x = position.x + calculatedAdvance - tempInfo.xBearing + glyphInfo->xBearing;
+ position.y = -glyphInfo->yBearing;
+ }
+
+ if(outputParamsForGlyph.baseline < position.y + glyphInfo->yBearing)
+ {
+ outputParamsForGlyph.baseline = position.y + glyphInfo->yBearing;
+ }
+
+ // Calculate the positions of leftmost and rightmost glyphs in the current line
+ if(inputParamsForGlyph.removeFrontInset)
+ {
+ if(position.x < outputParamsForGlyph.lineExtentLeft)
+ {
+ outputParamsForGlyph.lineExtentLeft = position.x;
+ }
+ }
+ else
+ {
+ const float originPositionLeft = position.x - glyphInfo->xBearing;
+ if(originPositionLeft < outputParamsForGlyph.lineExtentLeft)
+ {
+ outputParamsForGlyph.lineExtentLeft = originPositionLeft;
+ }
+ }
+
+ if(inputParamsForGlyph.removeBackInset)
+ {
+ if(position.x + glyphInfo->width > outputParamsForGlyph.lineExtentRight)
+ {
+ outputParamsForGlyph.lineExtentRight = position.x + glyphInfo->width;
+ }
+ }
+ else
+ {
+ const float originPositionRight = position.x - glyphInfo->xBearing + glyphInfo->advance;
+ if(originPositionRight > outputParamsForGlyph.lineExtentRight)
+ {
+ outputParamsForGlyph.lineExtentRight = originPositionRight;
+ }
+ }
+
+ // Retrieves the glyph's color.
+ const ColorIndex colorIndex = inputParamsForGlyph.useDefaultColor ? 0u : *(inputParamsForGlyph.colorIndexBuffer + glyphIndex);
+
+ Vector4 color;
+ if(inputParamsForGlyph.style == Typesetter::STYLE_SHADOW)
+ {
+ color = inputParamsForGlyph.defaultColor;
+ }
+ else if(inputParamsForGlyph.style == Typesetter::STYLE_OUTLINE)
+ {
+ color = inputParamsForGlyph.defaultColor;
+ }
+ else
+ {
+ color = (inputParamsForGlyph.useDefaultColor || (0u == colorIndex)) ? inputParamsForGlyph.defaultColor : *(inputParamsForGlyph.colorsBuffer + (colorIndex - 1u));
+ }
+
+ if(inputParamsForGlyph.style == Typesetter::STYLE_NONE && inputParamsForGlyph.cutoutEnabled)
+ {
+ // Temporarily adjust the transparency to 1.f
+ color.a = 1.f;
+ }
+
+ // Premultiply alpha
+ color.r *= color.a;
+ color.g *= color.a;
+ color.b *= color.a;
+
+ // Retrieves the glyph's bitmap.
+ glyphData.glyphBitmap.buffer = nullptr;
+ glyphData.glyphBitmap.width = glyphInfo->width; // Desired width and height.
+ glyphData.glyphBitmap.height = glyphInfo->height;
+
+ float outlineWidth = inputParamsForGlyph.outlineWidth;
+
+ if(inputParamsForGlyph.style != Typesetter::STYLE_OUTLINE && inputParamsForGlyph.style != Typesetter::STYLE_SHADOW)
+ {
+ // Don't render outline for other styles
+ outlineWidth = 0.0f;
+ }
+
+ if(inputParamsForGlyph.style != Typesetter::STYLE_UNDERLINE && inputParamsForGlyph.style != Typesetter::STYLE_STRIKETHROUGH)
+ {
+ fontClient.CreateBitmap(glyphInfo->fontId,
+ glyphInfo->index,
+ glyphInfo->isItalicRequired,
+ glyphInfo->isBoldRequired,
+ glyphData.glyphBitmap,
+ static_cast<int32_t>(outlineWidth));
+ }
+
+ // Sets the glyph's bitmap into the bitmap of the whole text.
+ if(nullptr != glyphData.glyphBitmap.buffer)
+ {
+ if(inputParamsForGlyph.style == Typesetter::STYLE_OUTLINE)
+ {
+ // Set the position offset for the current glyph
+ glyphData.horizontalOffset -= glyphData.glyphBitmap.outlineOffsetX;
+ glyphData.verticalOffset -= glyphData.glyphBitmap.outlineOffsetY;
+ }
+
+ // Set the buffer of the glyph's bitmap into the final bitmap's buffer
+ TypesetGlyph(glyphData,
+ &position,
+ &color,
+ inputParamsForGlyph.style,
+ inputParamsForGlyph.pixelFormat);
+
+ if(inputParamsForGlyph.style == Typesetter::STYLE_OUTLINE)
+ {
+ // Reset the position offset for the next glyph
+ glyphData.horizontalOffset += glyphData.glyphBitmap.outlineOffsetX;
+ glyphData.verticalOffset += glyphData.glyphBitmap.outlineOffsetY;
+ }
+
+ // free the glyphBitmap.buffer if it is owner of buffer
+ if(glyphData.glyphBitmap.isBufferOwned)
+ {
+ free(glyphData.glyphBitmap.buffer);
+ glyphData.glyphBitmap.isBufferOwned = false;
+ }
+ glyphData.glyphBitmap.buffer = nullptr;
+ }
+}
+
+void CreateImageBufferForEachLine(TextAbstraction::FontClient fontClient, GlyphData& glyphData, Length& hyphenIndex, const LineRun& line, const bool isFirstLine, const InputParameterForEachLine& inputParamsForLine, const InputParameterForEachGlyph& inputParamsForGlyph)
+{
+ // Sets the horizontal offset of the line.
+ glyphData.horizontalOffset = inputParamsForLine.ignoreHorizontalAlignment ? 0 : static_cast<int32_t>(line.alignmentOffset);
+ glyphData.horizontalOffset += inputParamsForLine.horizontalOffset;
+
+ // Increases the vertical offset with the line's ascender.
+ glyphData.verticalOffset += static_cast<int32_t>(line.ascender + GetPreOffsetVerticalLineAlignment(line, inputParamsForLine.verticalLineAlignType));
+
+ if(inputParamsForGlyph.style == Typesetter::STYLE_OUTLINE)
+ {
+ glyphData.horizontalOffset -= inputParamsForGlyph.outlineWidth;
+ glyphData.horizontalOffset += inputParamsForLine.styleOffset.x;
+ if(isFirstLine)
+ {
+ // Only need to add the vertical outline offset for the first line
+ glyphData.verticalOffset -= inputParamsForGlyph.outlineWidth;
+ glyphData.verticalOffset += inputParamsForLine.styleOffset.y;
+ }
+ }
+ else if(inputParamsForGlyph.style == Typesetter::STYLE_SHADOW)
+ {
+ glyphData.horizontalOffset += inputParamsForLine.styleOffset.x - inputParamsForGlyph.outlineWidth; // if outline enabled then shadow should offset from outline
+
+ if(isFirstLine)
+ {
+ // Only need to add the vertical shadow offset for first line
+ glyphData.verticalOffset += inputParamsForLine.styleOffset.y - inputParamsForGlyph.outlineWidth;
+ }
+ }
+
+ bool thereAreUnderlinedGlyphs = false;
+ bool thereAreStrikethroughGlyphs = false;
+
+ float currentUnderlinePosition = 0.0f;
+ auto currentUnderlineProperties = inputParamsForGlyph.modelUnderlineProperties;
+ float maxUnderlineHeight = currentUnderlineProperties.height;
+
+ auto currentStrikethroughProperties = inputParamsForGlyph.modelStrikethroughProperties;
+ float maxStrikethroughHeight = currentStrikethroughProperties.height;
+
+ FontId lastFontId = 0;
+
+ float lineExtentLeft = inputParamsForLine.bufferWidth;
+ float lineExtentRight = 0.0f;
+ float baseline = 0.0f;
+ bool addHyphen = false;
+
+ // Traverses the glyphs of the line.
+ const GlyphIndex startGlyphIndex = std::max(std::max(line.glyphRun.glyphIndex, inputParamsForLine.startIndexOfGlyphs), inputParamsForLine.fromGlyphIndex);
+ GlyphIndex endGlyphIndex = (line.isSplitToTwoHalves ? line.glyphRunSecondHalf.glyphIndex + line.glyphRunSecondHalf.numberOfGlyphs : line.glyphRun.glyphIndex + line.glyphRun.numberOfGlyphs) - 1u;
+ endGlyphIndex = std::min(std::min(endGlyphIndex, inputParamsForLine.endIndexOfGlyphs), inputParamsForLine.toGlyphIndex);
+
+ for(GlyphIndex glyphIndex = startGlyphIndex; glyphIndex <= endGlyphIndex; ++glyphIndex)
+ {
+ //To handle START case of ellipsis, the first glyph has been shifted
+ //glyphIndex represent indices in whole glyphs but elidedGlyphIndex represents indices in elided Glyphs
+ GlyphIndex elidedGlyphIndex = glyphIndex - inputParamsForLine.startIndexOfGlyphs;
+
+ //To handle MIDDLE case of ellipsis, the first glyph in the second half of line has been shifted and skip the removed glyph from middle.
+ if(inputParamsForLine.ellipsisPosition == DevelText::EllipsisPosition::MIDDLE)
+ {
+ if(glyphIndex > inputParamsForLine.firstMiddleIndexOfElidedGlyphs &&
+ glyphIndex < inputParamsForLine.secondMiddleIndexOfElidedGlyphs)
+ {
+ // Ignore any glyph that removed for MIDDLE ellipsis
+ continue;
+ }
+ if(glyphIndex >= inputParamsForLine.secondMiddleIndexOfElidedGlyphs)
+ {
+ elidedGlyphIndex -= (inputParamsForLine.secondMiddleIndexOfElidedGlyphs - inputParamsForLine.firstMiddleIndexOfElidedGlyphs - 1u);
+ }
+ }
+
+ // Retrieve the glyph's info.
+ const GlyphInfo* glyphInfo;
+
+ if(addHyphen && inputParamsForLine.hyphens)
+ {
+ glyphInfo = inputParamsForLine.hyphens + hyphenIndex;
+ hyphenIndex++;
+ }
+ else
+ {
+ glyphInfo = inputParamsForGlyph.glyphsBuffer + elidedGlyphIndex;
+ }
+
+ if((glyphInfo->width < Math::MACHINE_EPSILON_1000) ||
+ (glyphInfo->height < Math::MACHINE_EPSILON_1000))
+ {
+ // Nothing to do if the glyph's width or height is zero.
+ continue;
+ }
+
+ // Collect output l-values
+ // clang-format off
+ OutputParameterForEachGlyph outputParamsForGlyph{currentUnderlineProperties,
+
+ maxUnderlineHeight,
+ thereAreUnderlinedGlyphs,
+
+ currentStrikethroughProperties,
+
+ maxStrikethroughHeight,
+ thereAreStrikethroughGlyphs,
+
+ currentUnderlinePosition,
+
+ baseline,
+ lineExtentLeft,
+ lineExtentRight,
+
+ lastFontId};
+ // clang-format on
+
+ CreateImageBufferForEachGlyph(fontClient, glyphData, glyphIndex, elidedGlyphIndex, glyphInfo, addHyphen, inputParamsForGlyph, outputParamsForGlyph);
+
+ if(inputParamsForLine.hyphenIndices)
+ {
+ while((hyphenIndex < inputParamsForLine.hyphensCount) && (glyphIndex > inputParamsForLine.hyphenIndices[hyphenIndex]))
+ {
+ hyphenIndex++;
+ }
+
+ addHyphen = ((hyphenIndex < inputParamsForLine.hyphensCount) && ((glyphIndex + 1) == inputParamsForLine.hyphenIndices[hyphenIndex]));
+ if(addHyphen)
+ {
+ glyphIndex--;
+ }
+ }
+ }
+
+ // Draw the underline from the leftmost glyph to the rightmost glyph
+ if(thereAreUnderlinedGlyphs && inputParamsForGlyph.style == Typesetter::STYLE_UNDERLINE)
+ {
+ DrawUnderline(inputParamsForLine.bufferWidth, inputParamsForLine.bufferHeight, glyphData, baseline, currentUnderlinePosition, maxUnderlineHeight, lineExtentLeft, lineExtentRight, inputParamsForGlyph.modelUnderlineProperties, currentUnderlineProperties, line);
+ }
+
+ // Draw the background color from the leftmost glyph to the rightmost glyph
+ if(inputParamsForGlyph.style == Typesetter::STYLE_BACKGROUND)
+ {
+ DrawBackgroundColor(inputParamsForGlyph.defaultColor, inputParamsForLine.bufferWidth, inputParamsForLine.bufferHeight, glyphData, baseline, line, lineExtentLeft, lineExtentRight);
+ }
+
+ // Draw the strikethrough from the leftmost glyph to the rightmost glyph
+ if(thereAreStrikethroughGlyphs && inputParamsForGlyph.style == Typesetter::STYLE_STRIKETHROUGH)
+ {
+ //TODO : The currently implemented strikethrough creates a strikethrough on the line level. We need to create different strikethroughs the case of glyphs with different sizes.
+ const float strikethroughStartingYPosition = (glyphData.verticalOffset + baseline + currentUnderlinePosition) - ((line.ascender) * HALF); // Since Free Type font doesn't contain the strikethrough-position property, strikethrough position will be calculated by moving the underline position upwards by half the value of the line height.
+ DrawStrikethrough(inputParamsForLine.bufferWidth, inputParamsForLine.bufferHeight, glyphData, baseline, strikethroughStartingYPosition, maxStrikethroughHeight, lineExtentLeft, lineExtentRight, inputParamsForGlyph.modelStrikethroughProperties, currentStrikethroughProperties, line);
+ }
+
+ // Increases the vertical offset with the line's descender & line spacing.
+ glyphData.verticalOffset += static_cast<int32_t>(-line.descender + GetPostOffsetVerticalLineAlignment(line, inputParamsForLine.verticalLineAlignType));
+}
+
+/// Helper functions to create image buffer end
+
+/**
+ * @brief Create an initialized image buffer filled with transparent color.
+ *
+ * Creates the pixel data used to generate the final image with the given size.
+ *
+ * @param[in] bufferWidth The width of the image buffer.
+ * @param[in] bufferHeight The height of the image buffer.
+ * @param[in] pixelFormat The format of the pixel in the image that the text is rendered as (i.e. either Pixel::BGRA8888 or Pixel::L8).
+ *
+ * @return An image buffer.
+ */
+inline Devel::PixelBuffer CreateTransparentImageBuffer(const uint32_t bufferWidth, const uint32_t bufferHeight, const Pixel::Format pixelFormat)
+{
+ Devel::PixelBuffer imageBuffer = Devel::PixelBuffer::New(bufferWidth, bufferHeight, pixelFormat);
+
+ if(Pixel::RGBA8888 == pixelFormat)
+ {
+ const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
+ const size_t bufferSizeChar = sizeof(uint32_t) * static_cast<std::size_t>(bufferSizeInt);
+ memset(imageBuffer.GetBuffer(), 0, bufferSizeChar);
+ }
+ else
+ {
+ memset(imageBuffer.GetBuffer(), 0, static_cast<std::size_t>(bufferWidth * bufferHeight));
+ }
+
+ return imageBuffer;
+}
+
+} // namespace
+
+ViewModel* Typesetter::Impl::GetViewModel()
+{
+ return mModel.get();
+}
+
+void Typesetter::Impl::SetFontClient(TextAbstraction::FontClient& fontClient)
+{
+ mFontClient = fontClient;
+}
+
+TextAbstraction::FontClient& Typesetter::Impl::GetFontClient()
+{
+ return mFontClient;
+}
+
+Devel::PixelBuffer Typesetter::Impl::CreateTransparentImageBuffer(const uint32_t bufferWidth, const uint32_t bufferHeight, const Pixel::Format pixelFormat)
+{
+ return Dali::Toolkit::Text::CreateTransparentImageBuffer(bufferWidth, bufferHeight, pixelFormat);
+}
+
+void Typesetter::Impl::DrawGlyphsBackground(Devel::PixelBuffer& buffer, const uint32_t bufferWidth, const uint32_t bufferHeight, const bool ignoreHorizontalAlignment, const int32_t horizontalOffset, const int32_t verticalOffset)
+{
+ // Use l-value to make ensure it is not nullptr, so compiler happy.
+ auto& viewModel = *(mModel.get());
+
+ // Retrieve lines, glyphs, positions and colors from the view model.
+ const Length modelNumberOfLines = viewModel.GetNumberOfLines();
+ const LineRun* const modelLinesBuffer = viewModel.GetLines();
+ const Length numberOfGlyphs = viewModel.GetNumberOfGlyphs();
+ const GlyphInfo* const glyphsBuffer = viewModel.GetGlyphs();
+ const Vector2* const positionBuffer = viewModel.GetLayout();
+ const Vector4* const backgroundColorsBuffer = viewModel.GetBackgroundColors();
+ const ColorIndex* const backgroundColorIndicesBuffer = viewModel.GetBackgroundColorIndices();
+ const bool removeFrontInset = viewModel.IsRemoveFrontInset();
+ const bool removeBackInset = viewModel.IsRemoveBackInset();
+
+ const DevelText::VerticalLineAlignment::Type verticalLineAlignType = viewModel.GetVerticalLineAlignment();
+
+ // Create and initialize the pixel buffer.
+ GlyphData glyphData;
+ glyphData.verticalOffset = verticalOffset;
+ glyphData.width = bufferWidth;
+ glyphData.height = bufferHeight;
+ glyphData.bitmapBuffer = buffer;
+ glyphData.horizontalOffset = 0;
+
+ ColorIndex prevBackgroundColorIndex = 0;
+ ColorIndex backgroundColorIndex = 0;
+
+ // Traverses the lines of the text.
+ for(LineIndex lineIndex = 0u; lineIndex < modelNumberOfLines; ++lineIndex)
+ {
+ const LineRun& line = *(modelLinesBuffer + lineIndex);
+
+ // Sets the horizontal offset of the line.
+ glyphData.horizontalOffset = ignoreHorizontalAlignment ? 0 : static_cast<int32_t>(line.alignmentOffset);
+ glyphData.horizontalOffset += horizontalOffset;
+
+ // Increases the vertical offset with the line's ascender.
+ glyphData.verticalOffset += static_cast<int32_t>(line.ascender + GetPreOffsetVerticalLineAlignment(line, verticalLineAlignType));
+
+ float left = bufferWidth;
+ float right = 0.0f;
+ float baseline = 0.0f;
+
+ // Traverses the glyphs of the line.
+ const GlyphIndex endGlyphIndex = std::min(numberOfGlyphs, line.glyphRun.glyphIndex + line.glyphRun.numberOfGlyphs);
+ for(GlyphIndex glyphIndex = line.glyphRun.glyphIndex; glyphIndex < endGlyphIndex; ++glyphIndex)
+ {
+ // Retrieve the glyph's info.
+ const GlyphInfo* const glyphInfo = glyphsBuffer + glyphIndex;
+
+ if((glyphInfo->width < Math::MACHINE_EPSILON_1000) ||
+ (glyphInfo->height < Math::MACHINE_EPSILON_1000))
+ {
+ // Nothing to do if default background color, the glyph's width or height is zero.
+ continue;
+ }
+
+ backgroundColorIndex = (nullptr == backgroundColorsBuffer) ? 0u : *(backgroundColorIndicesBuffer + glyphIndex);
+
+ if((backgroundColorIndex != prevBackgroundColorIndex) &&
+ (prevBackgroundColorIndex != 0u))
+ {
+ const Vector4& backgroundColor = *(backgroundColorsBuffer + prevBackgroundColorIndex - 1u);
+ DrawBackgroundColor(backgroundColor, bufferWidth, bufferHeight, glyphData, baseline, line, left, right);
+ }
+
+ if(backgroundColorIndex == 0u)
+ {
+ prevBackgroundColorIndex = backgroundColorIndex;
+ //if background color is the default do nothing
+ continue;
+ }
+
+ // Retrieves the glyph's position.
+ const Vector2* const position = positionBuffer + glyphIndex;
+
+ if(baseline < position->y + glyphInfo->yBearing)
+ {
+ baseline = position->y + glyphInfo->yBearing;
+ }
+
+ // Calculate the positions of leftmost and rightmost glyphs in the current line
+ if(removeFrontInset)
+ {
+ if((position->x < left) || (backgroundColorIndex != prevBackgroundColorIndex))
+ {
+ left = position->x;
+ }
+ }
+ else
+ {
+ const float originPositionLeft = position->x - glyphInfo->xBearing;
+ if((originPositionLeft < left) || (backgroundColorIndex != prevBackgroundColorIndex))
+ {
+ left = originPositionLeft;
+ }
+ }
+
+ if(removeBackInset)
+ {
+ if(position->x + glyphInfo->width > right)
+ {
+ right = position->x + glyphInfo->width;
+ }
+ }
+ else
+ {
+ const float originPositionRight = position->x - glyphInfo->xBearing + glyphInfo->advance;
+ if(originPositionRight > right)
+ {
+ right = originPositionRight;
+ }
+ }
+
+ prevBackgroundColorIndex = backgroundColorIndex;
+ }
+
+ //draw last background at line end if not default
+ if(backgroundColorIndex != 0u)
+ {
+ const Vector4& backgroundColor = *(backgroundColorsBuffer + backgroundColorIndex - 1u);
+ DrawBackgroundColor(backgroundColor, bufferWidth, bufferHeight, glyphData, baseline, line, left, right);
+ }
+
+ // Increases the vertical offset with the line's descender.
+ glyphData.verticalOffset += static_cast<int32_t>(-line.descender + GetPostOffsetVerticalLineAlignment(line, verticalLineAlignType));
+ }
+}
+
+Devel::PixelBuffer Typesetter::Impl::CreateImageBuffer(const uint32_t bufferWidth, const uint32_t bufferHeight, const Typesetter::Style style, const bool ignoreHorizontalAlignment, const Pixel::Format pixelFormat, const int32_t horizontalOffset, const int32_t verticalOffset, const GlyphIndex fromGlyphIndex, const GlyphIndex toGlyphIndex)
+{
+ // Use l-value to make ensure it is not nullptr, so compiler happy.
+ auto& viewModel = *(mModel.get());
+
+ // Retrieve lines, glyphs, positions and colors from the view model.
+ const Length modelNumberOfLines = viewModel.GetNumberOfLines();
+ const LineRun* const __restrict__ modelLinesBuffer = viewModel.GetLines();
+ const GlyphInfo* const __restrict__ glyphsBuffer = viewModel.GetGlyphs();
+ const Vector2* const __restrict__ positionBuffer = viewModel.GetLayout();
+ const Vector4* const __restrict__ colorsBuffer = viewModel.GetColors();
+ const ColorIndex* const __restrict__ colorIndexBuffer = viewModel.GetColorIndices();
+ const GlyphInfo* __restrict__ hyphens = viewModel.GetHyphens();
+ const Length* __restrict__ hyphenIndices = viewModel.GetHyphenIndices();
+ const Length hyphensCount = viewModel.GetHyphensCount();
+
+ // Create and initialize the pixel buffer.
+ GlyphData glyphData;
+ glyphData.verticalOffset = verticalOffset;
+ glyphData.width = bufferWidth;
+ glyphData.height = bufferHeight;
+ glyphData.bitmapBuffer = CreateTransparentImageBuffer(bufferWidth, bufferHeight, pixelFormat);
+ glyphData.horizontalOffset = 0;
+
+ Length hyphenIndex = 0;
+
+ const Character* __restrict__ textBuffer = viewModel.GetTextBuffer();
+ const Vector<CharacterIndex>& __restrict__ glyphToCharacterMap = viewModel.GetGlyphsToCharacters();
+ const CharacterIndex* __restrict__ glyphToCharacterMapBuffer = glyphToCharacterMap.Begin();
+
+ // Get the underline runs.
+ const Length numberOfUnderlineRuns = viewModel.GetNumberOfUnderlineRuns();
+ Vector<UnderlinedGlyphRun> underlineRuns;
+ underlineRuns.Resize(numberOfUnderlineRuns);
+ viewModel.GetUnderlineRuns(underlineRuns.Begin(), 0u, numberOfUnderlineRuns);
+
+ // Get the strikethrough runs.
+ const Length numberOfStrikethroughRuns = viewModel.GetNumberOfStrikethroughRuns();
+ Vector<StrikethroughGlyphRun> strikethroughRuns;
+ strikethroughRuns.Resize(numberOfStrikethroughRuns);
+ viewModel.GetStrikethroughRuns(strikethroughRuns.Begin(), 0u, numberOfStrikethroughRuns);
+
+ // Get the character-spacing runs.
+ const Vector<CharacterSpacingGlyphRun>& __restrict__ characterSpacingGlyphRuns = viewModel.GetCharacterSpacingGlyphRuns();
+
+ // clang-format off
+ // Aggregate input parameter for each line from mModel
+ const InputParameterForEachLine inputParamsForLine{bufferWidth,
+ bufferHeight,
+ horizontalOffset,
+
+ (style == Typesetter::STYLE_OUTLINE) ? viewModel.GetOutlineOffset() :
+ (style == Typesetter::STYLE_SHADOW) ? viewModel.GetShadowOffset() :
+ Vector2::ZERO,
+
+ fromGlyphIndex,
+ toGlyphIndex,
+
+ // Elided text info. Indices according to elided text and Ellipsis position.
+ viewModel.GetStartIndexOfElidedGlyphs(),
+ viewModel.GetEndIndexOfElidedGlyphs(),
+ viewModel.GetFirstMiddleIndexOfElidedGlyphs(),
+ viewModel.GetSecondMiddleIndexOfElidedGlyphs(),
+
+ viewModel.GetVerticalLineAlignment(),
+ viewModel.GetEllipsisPosition(),
+
+ hyphens,
+ hyphenIndices,
+ hyphensCount,
+
+ ignoreHorizontalAlignment};
+
+ // Aggregate underline-style-properties from mModel
+ const UnderlineStyleProperties modelUnderlineProperties{viewModel.GetUnderlineType(),
+ viewModel.GetUnderlineColor(),
+ viewModel.GetUnderlineHeight(),
+ viewModel.GetDashedUnderlineGap(),
+ viewModel.GetDashedUnderlineWidth(),
+ true,
+ true,
+ true,
+ true,
+ true};
+
+ // Aggregate strikethrough-style-properties from mModel
+ const StrikethroughStyleProperties modelStrikethroughProperties{viewModel.GetStrikethroughColor(),
+ viewModel.GetStrikethroughHeight(),
+ true,
+ true};
+
+
+ // Aggregate input parameter for each glyph from mModel
+ const InputParameterForEachGlyph inputParamsForGlyph{style,
+ pixelFormat,
+
+ // Retrieves the glyph's outline width
+ static_cast<float>(viewModel.GetOutlineWidth()),
+
+ viewModel.GetCharacterSpacing(),
+
+ (style == Typesetter::STYLE_OUTLINE) ? viewModel.GetOutlineColor() :
+ (style == Typesetter::STYLE_SHADOW) ? viewModel.GetShadowColor() :
+ (style == Typesetter::STYLE_BACKGROUND) ? viewModel.GetBackgroundColor() :
+ viewModel.GetDefaultColor(),
+
+ underlineRuns,
+ strikethroughRuns,
+ characterSpacingGlyphRuns,
+
+ glyphsBuffer,
+ textBuffer,
+ glyphToCharacterMapBuffer,
+
+ positionBuffer,
+
+ colorsBuffer,
+ colorIndexBuffer,
+
+ modelUnderlineProperties,
+ modelStrikethroughProperties,
+
+ viewModel.IsUnderlineEnabled(),
+ viewModel.IsStrikethroughEnabled(),
+ viewModel.IsCutoutEnabled(),
+
+ viewModel.IsRemoveFrontInset(),
+ viewModel.IsRemoveBackInset(),
+
+ // Whether to use the default color.
+ (nullptr == colorsBuffer)};
+ // clang-format on
+
+ // Traverses the lines of the text.
+ for(LineIndex lineIndex = 0u; lineIndex < modelNumberOfLines; ++lineIndex)
+ {
+ const LineRun& line = *(modelLinesBuffer + lineIndex);
+ CreateImageBufferForEachLine(mFontClient, glyphData, hyphenIndex, line, (lineIndex == 0u), inputParamsForLine, inputParamsForGlyph);
+ }
+
+ return glyphData.bitmapBuffer;
+}
+
+Typesetter::Impl::Impl(const ModelInterface* const model)
+: mModel(std::make_unique<ViewModel>(model))
+{
+ // Default font client set.
+ mFontClient = TextAbstraction::FontClient::Get();
+}
+
+Typesetter::Impl::~Impl() = default;
+
+} // namespace Text
+
+} // namespace Toolkit
+
+} // namespace Dali
#include <dali-toolkit/internal/text/rendering/text-typesetter.h>
// EXTERNAL INCLUDES
-#include <cmath>
#include <dali/devel-api/text-abstraction/font-client.h>
#include <dali/integration-api/debug.h>
#include <dali/integration-api/trace.h>
#include <dali/public-api/common/constants.h>
#include <dali/public-api/math/math-utils.h>
#include <memory.h>
+#include <cmath>
// INTERNAL INCLUDES
#include <dali-toolkit/devel-api/controls/text-controls/text-label-devel.h>
#include <dali-toolkit/internal/text/rendering/styles/character-spacing-helper-functions.h>
#include <dali-toolkit/internal/text/rendering/styles/strikethrough-helper-functions.h>
#include <dali-toolkit/internal/text/rendering/styles/underline-helper-functions.h>
+#include <dali-toolkit/internal/text/rendering/text-typesetter-impl.h>
#include <dali-toolkit/internal/text/rendering/view-model.h>
namespace Dali
{
DALI_INIT_TRACE_FILTER(gTraceFilter, DALI_TRACE_TEXT_PERFORMANCE_MARKER, false);
-const float HALF(0.5f);
-const float ONE_AND_A_HALF(1.5f);
-
/**
* @brief Fast multiply & divide by 255. It wiil be useful when we applying alpha value in color
*
const uint32_t xy1 = static_cast<const uint32_t>(x1) * y1;
const uint32_t xy2 = static_cast<const uint32_t>(x2) * y2;
const uint32_t res = std::min(65025u, xy1 + xy2); // 65025 is 255 * 255.
- return ((res + ((res + 257) >> 8)) >> 8); // fast divide by 255.
-}
-
-/// Helper macro define for glyph typesetter. It will reduce some duplicated code line.
-// clang-format off
-/**
- * @brief Prepare decode glyph bitmap data. It must be call END_GLYPH_BITMAP end of same scope.
- */
-#define BEGIN_GLYPH_BITMAP(data) \
-{ \
- uint32_t glyphOffet = 0u; \
- const bool useLocalScanline = data.glyphBitmap.compressionType != TextAbstraction::GlyphBufferData::CompressionType::NO_COMPRESSION; \
- uint8_t* __restrict__ glyphScanline = useLocalScanline ? (uint8_t*)malloc(data.glyphBitmap.width * glyphPixelSize) : data.glyphBitmap.buffer; \
- DALI_ASSERT_ALWAYS(glyphScanline && "Glyph scanline for buffer is null!");
-
-/**
- * @brief Macro to skip useless line fast.
- */
-#define SKIP_GLYPH_SCANLINE(skipLine) \
-if(useLocalScanline) \
-{ \
- for(int32_t lineIndex = 0; lineIndex < skipLine; ++lineIndex) \
- { \
- TextAbstraction::GlyphBufferData::DecompressScanline(data.glyphBitmap, glyphScanline, glyphOffet); \
- } \
-} \
-else \
-{ \
- glyphScanline += skipLine * static_cast<int32_t>(data.glyphBitmap.width * glyphPixelSize); \
-}
-
-/**
- * @brief Prepare scanline of glyph bitmap data per each lines. It must be call END_GLYPH_SCANLINE_DECODE end of same scope.
- */
-#define BEGIN_GLYPH_SCANLINE_DECODE(data) \
-{ \
- if(useLocalScanline) \
- { \
- TextAbstraction::GlyphBufferData::DecompressScanline(data.glyphBitmap, glyphScanline, glyphOffet); \
- }
-
-/**
- * @brief Finalize scanline of glyph bitmap data per each lines.
- */
-#define END_GLYPH_SCANLINE_DECODE(data) \
- if(!useLocalScanline) \
- { \
- glyphScanline += data.glyphBitmap.width * glyphPixelSize; \
- } \
-} // For ensure that we call BEGIN_GLYPH_SCANLINE_DECODE before
-
-/**
- * @brief Finalize decode glyph bitmap data.
- */
-#define END_GLYPH_BITMAP() \
- if(useLocalScanline) \
- { \
- free(glyphScanline); \
- } \
-} // For ensure that we call BEGIN_GLYPH_BITMAP before
-
-// clang-format on
-/// Helper macro define end.
-
-/**
- * @brief Data struct used to set the buffer of the glyph's bitmap into the final bitmap's buffer.
- */
-struct GlyphData
-{
- Devel::PixelBuffer bitmapBuffer; ///< The buffer of the whole bitmap. The format is RGBA8888.
- Vector2* position; ///< The position of the glyph.
- TextAbstraction::GlyphBufferData glyphBitmap; ///< The glyph's bitmap.
- uint32_t width; ///< The bitmap's width.
- uint32_t height; ///< The bitmap's height.
- int32_t horizontalOffset; ///< The horizontal offset to be added to the 'x' glyph's position.
- int32_t verticalOffset; ///< The vertical offset to be added to the 'y' glyph's position.
-};
-
-/**
- * @brief Sets the glyph's buffer into the bitmap's buffer.
- *
- * @param[in, out] data Struct which contains the glyph's data and the bitmap's data.
- * @param[in] position The position of the glyph.
- * @param[in] color The color of the glyph.
- * @param[in] style The style of the text.
- * @param[in] pixelFormat The format of the pixel in the image that the text is rendered as (i.e. either Pixel::BGRA8888 or Pixel::L8).
- */
-void TypesetGlyph(GlyphData& __restrict__ data,
- const Vector2* const __restrict__ position,
- const Vector4* const __restrict__ color,
- const Typesetter::Style style,
- const Pixel::Format pixelFormat)
-{
- if((0u == data.glyphBitmap.width) || (0u == data.glyphBitmap.height))
- {
- // Nothing to do if the width or height of the buffer is zero.
- return;
- }
-
- // Initial vertical / horizontal offset.
- const int32_t yOffset = data.verticalOffset + position->y;
- const int32_t xOffset = data.horizontalOffset + position->x;
-
- // Whether the given glyph is a color one.
- const bool isColorGlyph = data.glyphBitmap.isColorEmoji || data.glyphBitmap.isColorBitmap;
- const uint32_t glyphPixelSize = Pixel::GetBytesPerPixel(data.glyphBitmap.format);
- const uint32_t glyphAlphaIndex = (glyphPixelSize > 0u) ? glyphPixelSize - 1u : 0u;
-
- // Determinate iterator range.
- const int32_t lineIndexRangeMin = std::max(0, -yOffset);
- const int32_t lineIndexRangeMax = std::min(static_cast<int32_t>(data.glyphBitmap.height), static_cast<int32_t>(data.height) - yOffset);
- const int32_t indexRangeMin = std::max(0, -xOffset);
- const int32_t indexRangeMax = std::min(static_cast<int32_t>(data.glyphBitmap.width), static_cast<int32_t>(data.width) - xOffset);
-
- // If current glyph don't need to be rendered, just ignore.
- if(lineIndexRangeMax <= lineIndexRangeMin || indexRangeMax <= indexRangeMin)
- {
- return;
- }
-
- if(Pixel::RGBA8888 == pixelFormat)
- {
- uint32_t* __restrict__ bitmapBuffer = reinterpret_cast<uint32_t*>(data.bitmapBuffer.GetBuffer());
- // Skip basic line.
- bitmapBuffer += (lineIndexRangeMin + yOffset) * static_cast<int32_t>(data.width);
-
- // Fast-cut if style is MASK or OUTLINE. Outline not shown for color glyph.
- // Just overwrite transparent color and return.
- if(isColorGlyph && (Typesetter::STYLE_MASK == style || Typesetter::STYLE_OUTLINE == style))
- {
- for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
- {
- // We can use memset here.
- memset(bitmapBuffer + xOffset + indexRangeMin, 0, (indexRangeMax - indexRangeMin) * sizeof(uint32_t));
- bitmapBuffer += data.width;
- }
- return;
- }
-
- const bool swapChannelsBR = Pixel::BGRA8888 == data.glyphBitmap.format;
-
- // Precalculate input color's packed result.
- uint32_t packedInputColor = 0u;
- uint8_t* __restrict__ packedInputColorBuffer = reinterpret_cast<uint8_t*>(&packedInputColor);
-
- *(packedInputColorBuffer + 3u) = static_cast<uint8_t>(color->a * 255);
- *(packedInputColorBuffer + 2u) = static_cast<uint8_t>(color->b * 255);
- *(packedInputColorBuffer + 1u) = static_cast<uint8_t>(color->g * 255);
- *(packedInputColorBuffer) = static_cast<uint8_t>(color->r * 255);
-
- // Prepare glyph bitmap
- BEGIN_GLYPH_BITMAP(data);
-
- // Skip basic line of glyph.
- SKIP_GLYPH_SCANLINE(lineIndexRangeMin);
-
- // Traverse the pixels of the glyph line per line.
- if(isColorGlyph)
- {
- for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
- {
- BEGIN_GLYPH_SCANLINE_DECODE(data);
-
- for(int32_t index = indexRangeMin; index < indexRangeMax; ++index)
- {
- const int32_t xOffsetIndex = xOffset + index;
-
- // Retrieves the color from the color glyph.
- uint32_t packedColorGlyph = *(reinterpret_cast<const uint32_t*>(glyphScanline + (index << 2)));
- uint8_t* __restrict__ packedColorGlyphBuffer = reinterpret_cast<uint8_t*>(&packedColorGlyph);
-
- // Update the alpha channel.
- const uint8_t colorAlpha = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 3u), *(packedColorGlyphBuffer + 3u));
- *(packedColorGlyphBuffer + 3u) = colorAlpha;
-
- if(Typesetter::STYLE_SHADOW == style)
- {
- // The shadow of color glyph needs to have the shadow color.
- *(packedColorGlyphBuffer + 2u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 2u), colorAlpha);
- *(packedColorGlyphBuffer + 1u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 1u), colorAlpha);
- *packedColorGlyphBuffer = MultiplyAndNormalizeColor(*packedInputColorBuffer, colorAlpha);
- }
- else
- {
- if(swapChannelsBR)
- {
- std::swap(*packedColorGlyphBuffer, *(packedColorGlyphBuffer + 2u)); // Swap B and R.
- }
-
- *(packedColorGlyphBuffer + 2u) = MultiplyAndNormalizeColor(*(packedColorGlyphBuffer + 2u), colorAlpha);
- *(packedColorGlyphBuffer + 1u) = MultiplyAndNormalizeColor(*(packedColorGlyphBuffer + 1u), colorAlpha);
- *packedColorGlyphBuffer = MultiplyAndNormalizeColor(*packedColorGlyphBuffer, colorAlpha);
-
- if(data.glyphBitmap.isColorBitmap)
- {
- *(packedColorGlyphBuffer + 2u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 2u), *(packedColorGlyphBuffer + 2u));
- *(packedColorGlyphBuffer + 1u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 1u), *(packedColorGlyphBuffer + 1u));
- *packedColorGlyphBuffer = MultiplyAndNormalizeColor(*packedInputColorBuffer, *packedColorGlyphBuffer);
- }
- }
-
- // Set the color into the final pixel buffer.
- *(bitmapBuffer + xOffsetIndex) = packedColorGlyph;
- }
-
- bitmapBuffer += data.width;
-
- END_GLYPH_SCANLINE_DECODE(data);
- }
- }
- else
- {
- for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
- {
- BEGIN_GLYPH_SCANLINE_DECODE(data);
-
- for(int32_t index = indexRangeMin; index < indexRangeMax; ++index)
- {
- // Update the alpha channel.
- const uint8_t alpha = *(glyphScanline + index * glyphPixelSize + glyphAlphaIndex);
-
- // Copy non-transparent pixels only
- if(alpha > 0u)
- {
- const int32_t xOffsetIndex = xOffset + index;
-
- // Check alpha of overlapped pixels
- uint32_t& currentColor = *(bitmapBuffer + xOffsetIndex);
- uint8_t* packedCurrentColorBuffer = reinterpret_cast<uint8_t*>(¤tColor);
-
- // For any pixel overlapped with the pixel in previous glyphs, make sure we don't
- // overwrite a previous bigger alpha with a smaller alpha (in order to avoid
- // semi-transparent gaps between joint glyphs with overlapped pixels, which could
- // happen, for example, in the RTL text when we copy glyphs from right to left).
- uint8_t currentAlpha = *(packedCurrentColorBuffer + 3u);
- currentAlpha = std::max(currentAlpha, alpha);
- if(currentAlpha == 255)
- {
- // Fast-cut to avoid float type operation.
- currentColor = packedInputColor;
- }
- else
- {
- // Pack the given color into a 32bit buffer. The alpha channel will be updated later for each pixel.
- // The format is RGBA8888.
- uint32_t packedColor = 0u;
- uint8_t* __restrict__ packedColorBuffer = reinterpret_cast<uint8_t*>(&packedColor);
-
- // Color is pre-muliplied with its alpha.
- *(packedColorBuffer + 3u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 3u), currentAlpha);
- *(packedColorBuffer + 2u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 2u), currentAlpha);
- *(packedColorBuffer + 1u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 1u), currentAlpha);
- *(packedColorBuffer) = MultiplyAndNormalizeColor(*packedInputColorBuffer, currentAlpha);
-
- // Set the color into the final pixel buffer.
- currentColor = packedColor;
- }
- }
- }
-
- bitmapBuffer += data.width;
-
- END_GLYPH_SCANLINE_DECODE(data);
- }
- }
-
- END_GLYPH_BITMAP();
- }
- else // Pixel::L8
- {
- // Below codes required only if not color glyph.
- if(!isColorGlyph)
- {
- uint8_t* __restrict__ bitmapBuffer = data.bitmapBuffer.GetBuffer();
- // Skip basic line.
- bitmapBuffer += (lineIndexRangeMin + yOffset) * static_cast<int32_t>(data.width);
-
- // Prepare glyph bitmap
- BEGIN_GLYPH_BITMAP(data);
-
- // Skip basic line of glyph.
- SKIP_GLYPH_SCANLINE(lineIndexRangeMin);
-
- // Traverse the pixels of the glyph line per line.
- for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
- {
- BEGIN_GLYPH_SCANLINE_DECODE(data);
-
- for(int32_t index = indexRangeMin; index < indexRangeMax; ++index)
- {
- const int32_t xOffsetIndex = xOffset + index;
-
- // Update the alpha channel.
- const uint8_t alpha = *(glyphScanline + index * glyphPixelSize + glyphAlphaIndex);
-
- // Copy non-transparent pixels only
- if(alpha > 0u)
- {
- // Check alpha of overlapped pixels
- uint8_t& currentAlpha = *(bitmapBuffer + xOffsetIndex);
-
- // For any pixel overlapped with the pixel in previous glyphs, make sure we don't
- // overwrite a previous bigger alpha with a smaller alpha (in order to avoid
- // semi-transparent gaps between joint glyphs with overlapped pixels, which could
- // happen, for example, in the RTL text when we copy glyphs from right to left).
- currentAlpha = std::max(currentAlpha, alpha);
- }
- }
-
- bitmapBuffer += data.width;
-
- END_GLYPH_SCANLINE_DECODE(data);
- }
-
- END_GLYPH_BITMAP();
- }
- }
-}
-
-/// Draws the specified underline color to the buffer
-void DrawUnderline(
- const uint32_t bufferWidth,
- const uint32_t bufferHeight,
- GlyphData& glyphData,
- const float baseline,
- const float currentUnderlinePosition,
- const float maxUnderlineHeight,
- const float lineExtentLeft,
- const float lineExtentRight,
- const UnderlineStyleProperties& commonUnderlineProperties,
- const UnderlineStyleProperties& currentUnderlineProperties,
- const LineRun& line)
-{
- const Vector4& underlineColor = currentUnderlineProperties.colorDefined ? currentUnderlineProperties.color : commonUnderlineProperties.color;
- const Text::Underline::Type underlineType = currentUnderlineProperties.typeDefined ? currentUnderlineProperties.type : commonUnderlineProperties.type;
- const float dashedUnderlineWidth = currentUnderlineProperties.dashWidthDefined ? currentUnderlineProperties.dashWidth : commonUnderlineProperties.dashWidth;
- const float dashedUnderlineGap = currentUnderlineProperties.dashGapDefined ? currentUnderlineProperties.dashGap : commonUnderlineProperties.dashGap;
-
- int32_t underlineYOffset = glyphData.verticalOffset + baseline + currentUnderlinePosition;
-
- const uint32_t yRangeMin = underlineYOffset;
- const uint32_t yRangeMax = std::min(bufferHeight, underlineYOffset + static_cast<uint32_t>(maxUnderlineHeight));
- const uint32_t xRangeMin = static_cast<uint32_t>(glyphData.horizontalOffset + lineExtentLeft);
- const uint32_t xRangeMax = std::min(bufferWidth, static_cast<uint32_t>(glyphData.horizontalOffset + lineExtentRight + 1)); // Due to include last point, we add 1 here
-
- // If current glyph don't need to be rendered, just ignore.
- if((underlineType != Text::Underline::DOUBLE && yRangeMax <= yRangeMin) || xRangeMax <= xRangeMin)
- {
- return;
- }
-
- // We can optimize by memset when underlineColor.a is near zero
- uint8_t underlineColorAlpha = static_cast<uint8_t>(underlineColor.a * 255.f);
-
- uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer());
-
- // Skip yRangeMin line.
- bitmapBuffer += yRangeMin * glyphData.width;
-
- // Note if underlineType is DASHED, we cannot setup color by memset.
- if(underlineType != Text::Underline::DASHED && underlineColorAlpha == 0)
- {
- for(uint32_t y = yRangeMin; y < yRangeMax; y++)
- {
- // We can use memset.
- memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
- bitmapBuffer += glyphData.width;
- }
- if(underlineType == Text::Underline::DOUBLE)
- {
- int32_t secondUnderlineYOffset = underlineYOffset - ONE_AND_A_HALF * maxUnderlineHeight;
- const uint32_t secondYRangeMin = static_cast<uint32_t>(std::max(0, secondUnderlineYOffset));
- const uint32_t secondYRangeMax = static_cast<uint32_t>(std::max(0, std::min(static_cast<int32_t>(bufferHeight), secondUnderlineYOffset + static_cast<int32_t>(maxUnderlineHeight))));
-
- // Rewind bitmapBuffer pointer, and skip secondYRangeMin line.
- bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer()) + yRangeMin * glyphData.width;
-
- for(uint32_t y = secondYRangeMin; y < secondYRangeMax; y++)
- {
- // We can use memset.
- memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
- bitmapBuffer += glyphData.width;
- }
- }
- }
- else
- {
- uint32_t packedUnderlineColor = 0u;
- uint8_t* packedUnderlineColorBuffer = reinterpret_cast<uint8_t*>(&packedUnderlineColor);
-
- // Write the color to the pixel buffer
- *(packedUnderlineColorBuffer + 3u) = underlineColorAlpha;
- *(packedUnderlineColorBuffer + 2u) = static_cast<uint8_t>(underlineColor.b * underlineColorAlpha);
- *(packedUnderlineColorBuffer + 1u) = static_cast<uint8_t>(underlineColor.g * underlineColorAlpha);
- *(packedUnderlineColorBuffer) = static_cast<uint8_t>(underlineColor.r * underlineColorAlpha);
-
- for(uint32_t y = yRangeMin; y < yRangeMax; y++)
- {
- if(underlineType == Text::Underline::DASHED)
- {
- float dashWidth = dashedUnderlineWidth;
- float dashGap = 0;
-
- for(uint32_t x = xRangeMin; x < xRangeMax; x++)
- {
- if(Dali::EqualsZero(dashGap) && dashWidth > 0)
- {
- // Note : this is same logic as bitmap[y][x] = underlineColor;
- *(bitmapBuffer + x) = packedUnderlineColor;
- dashWidth--;
- }
- else if(dashGap < dashedUnderlineGap)
- {
- dashGap++;
- }
- else
- {
- //reset
- dashWidth = dashedUnderlineWidth;
- dashGap = 0;
- }
- }
- }
- else
- {
- for(uint32_t x = xRangeMin; x < xRangeMax; x++)
- {
- // Note : this is same logic as bitmap[y][x] = underlineColor;
- *(bitmapBuffer + x) = packedUnderlineColor;
- }
- }
- bitmapBuffer += glyphData.width;
- }
- if(underlineType == Text::Underline::DOUBLE)
- {
- int32_t secondUnderlineYOffset = underlineYOffset - ONE_AND_A_HALF * maxUnderlineHeight;
- const uint32_t secondYRangeMin = static_cast<uint32_t>(std::max(0, secondUnderlineYOffset));
- const uint32_t secondYRangeMax = static_cast<uint32_t>(std::max(0, std::min(static_cast<int32_t>(bufferHeight), secondUnderlineYOffset + static_cast<int32_t>(maxUnderlineHeight))));
-
- // Rewind bitmapBuffer pointer, and skip secondYRangeMin line.
- bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer()) + yRangeMin * glyphData.width;
-
- for(uint32_t y = secondYRangeMin; y < secondYRangeMax; y++)
- {
- for(uint32_t x = xRangeMin; x < xRangeMax; x++)
- {
- // Note : this is same logic as bitmap[y][x] = underlineColor;
- *(bitmapBuffer + x) = packedUnderlineColor;
- }
- bitmapBuffer += glyphData.width;
- }
- }
- }
-}
-
-/// Draws the background color to the buffer
-void DrawBackgroundColor(
- Vector4 backgroundColor,
- const uint32_t bufferWidth,
- const uint32_t bufferHeight,
- GlyphData& glyphData,
- const float baseline,
- const LineRun& line,
- const float lineExtentLeft,
- const float lineExtentRight)
-{
- const int32_t yRangeMin = std::max(0, static_cast<int32_t>(glyphData.verticalOffset + baseline - line.ascender));
- const int32_t yRangeMax = std::min(static_cast<int32_t>(bufferHeight), static_cast<int32_t>(glyphData.verticalOffset + baseline - line.descender));
- const int32_t xRangeMin = std::max(0, static_cast<int32_t>(glyphData.horizontalOffset + lineExtentLeft));
- const int32_t xRangeMax = std::min(static_cast<int32_t>(bufferWidth), static_cast<int32_t>(glyphData.horizontalOffset + lineExtentRight + 1)); // Due to include last point, we add 1 here
-
- // If current glyph don't need to be rendered, just ignore.
- if(yRangeMax <= yRangeMin || xRangeMax <= xRangeMin)
- {
- return;
- }
-
- // We can optimize by memset when backgroundColor.a is near zero
- uint8_t backgroundColorAlpha = static_cast<uint8_t>(backgroundColor.a * 255.f);
-
- uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer());
-
- // Skip yRangeMin line.
- bitmapBuffer += yRangeMin * glyphData.width;
-
- if(backgroundColorAlpha == 0)
- {
- for(int32_t y = yRangeMin; y < yRangeMax; y++)
- {
- // We can use memset.
- memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
- bitmapBuffer += glyphData.width;
- }
- }
- else
- {
- uint32_t packedBackgroundColor = 0u;
- uint8_t* packedBackgroundColorBuffer = reinterpret_cast<uint8_t*>(&packedBackgroundColor);
-
- // Write the color to the pixel buffer
- *(packedBackgroundColorBuffer + 3u) = backgroundColorAlpha;
- *(packedBackgroundColorBuffer + 2u) = static_cast<uint8_t>(backgroundColor.b * backgroundColorAlpha);
- *(packedBackgroundColorBuffer + 1u) = static_cast<uint8_t>(backgroundColor.g * backgroundColorAlpha);
- *(packedBackgroundColorBuffer) = static_cast<uint8_t>(backgroundColor.r * backgroundColorAlpha);
-
- for(int32_t y = yRangeMin; y < yRangeMax; y++)
- {
- for(int32_t x = xRangeMin; x < xRangeMax; x++)
- {
- // Note : this is same logic as bitmap[y][x] = backgroundColor;
- *(bitmapBuffer + x) = packedBackgroundColor;
- }
- bitmapBuffer += glyphData.width;
- }
- }
-}
-
-Devel::PixelBuffer DrawGlyphsBackground(const ViewModel* model, Devel::PixelBuffer& buffer, const uint32_t bufferWidth, const uint32_t bufferHeight, const bool ignoreHorizontalAlignment, const int32_t horizontalOffset, const int32_t verticalOffset)
-{
- // Retrieve lines, glyphs, positions and colors from the view model.
- const Length modelNumberOfLines = model->GetNumberOfLines();
- const LineRun* const modelLinesBuffer = model->GetLines();
- const Length numberOfGlyphs = model->GetNumberOfGlyphs();
- const GlyphInfo* const glyphsBuffer = model->GetGlyphs();
- const Vector2* const positionBuffer = model->GetLayout();
- const Vector4* const backgroundColorsBuffer = model->GetBackgroundColors();
- const ColorIndex* const backgroundColorIndicesBuffer = model->GetBackgroundColorIndices();
- const bool removeFrontInset = model->IsRemoveFrontInset();
- const bool removeBackInset = model->IsRemoveBackInset();
-
- const DevelText::VerticalLineAlignment::Type verLineAlign = model->GetVerticalLineAlignment();
-
- // Create and initialize the pixel buffer.
- GlyphData glyphData;
- glyphData.verticalOffset = verticalOffset;
- glyphData.width = bufferWidth;
- glyphData.height = bufferHeight;
- glyphData.bitmapBuffer = buffer;
- glyphData.horizontalOffset = 0;
-
- ColorIndex prevBackgroundColorIndex = 0;
- ColorIndex backgroundColorIndex = 0;
-
- // Traverses the lines of the text.
- for(LineIndex lineIndex = 0u; lineIndex < modelNumberOfLines; ++lineIndex)
- {
- const LineRun& line = *(modelLinesBuffer + lineIndex);
-
- // Sets the horizontal offset of the line.
- glyphData.horizontalOffset = ignoreHorizontalAlignment ? 0 : static_cast<int32_t>(line.alignmentOffset);
- glyphData.horizontalOffset += horizontalOffset;
-
- // Increases the vertical offset with the line's ascender.
- glyphData.verticalOffset += static_cast<int32_t>(line.ascender + GetPreOffsetVerticalLineAlignment(line, verLineAlign));
-
- float left = bufferWidth;
- float right = 0.0f;
- float baseline = 0.0f;
-
- // Traverses the glyphs of the line.
- const GlyphIndex endGlyphIndex = std::min(numberOfGlyphs, line.glyphRun.glyphIndex + line.glyphRun.numberOfGlyphs);
- for(GlyphIndex glyphIndex = line.glyphRun.glyphIndex; glyphIndex < endGlyphIndex; ++glyphIndex)
- {
- // Retrieve the glyph's info.
- const GlyphInfo* const glyphInfo = glyphsBuffer + glyphIndex;
-
- if((glyphInfo->width < Math::MACHINE_EPSILON_1000) ||
- (glyphInfo->height < Math::MACHINE_EPSILON_1000))
- {
- // Nothing to do if default background color, the glyph's width or height is zero.
- continue;
- }
-
- backgroundColorIndex = (nullptr == backgroundColorsBuffer) ? 0u : *(backgroundColorIndicesBuffer + glyphIndex);
-
- if((backgroundColorIndex != prevBackgroundColorIndex) &&
- (prevBackgroundColorIndex != 0u))
- {
- const Vector4& backgroundColor = *(backgroundColorsBuffer + prevBackgroundColorIndex - 1u);
- DrawBackgroundColor(backgroundColor, bufferWidth, bufferHeight, glyphData, baseline, line, left, right);
- }
-
- if(backgroundColorIndex == 0u)
- {
- prevBackgroundColorIndex = backgroundColorIndex;
- //if background color is the default do nothing
- continue;
- }
-
- // Retrieves the glyph's position.
- const Vector2* const position = positionBuffer + glyphIndex;
-
- if(baseline < position->y + glyphInfo->yBearing)
- {
- baseline = position->y + glyphInfo->yBearing;
- }
-
- // Calculate the positions of leftmost and rightmost glyphs in the current line
- if(removeFrontInset)
- {
- if((position->x < left) || (backgroundColorIndex != prevBackgroundColorIndex))
- {
- left = position->x;
- }
- }
- else
- {
- const float originPositionLeft = position->x - glyphInfo->xBearing;
- if((originPositionLeft < left) || (backgroundColorIndex != prevBackgroundColorIndex))
- {
- left = originPositionLeft;
- }
- }
-
- if(removeBackInset)
- {
- if(position->x + glyphInfo->width > right)
- {
- right = position->x + glyphInfo->width;
- }
- }
- else
- {
- const float originPositionRight = position->x - glyphInfo->xBearing + glyphInfo->advance;
- if(originPositionRight > right)
- {
- right = originPositionRight;
- }
- }
-
- prevBackgroundColorIndex = backgroundColorIndex;
- }
-
- //draw last background at line end if not default
- if(backgroundColorIndex != 0u)
- {
- const Vector4& backgroundColor = *(backgroundColorsBuffer + backgroundColorIndex - 1u);
- DrawBackgroundColor(backgroundColor, bufferWidth, bufferHeight, glyphData, baseline, line, left, right);
- }
-
- // Increases the vertical offset with the line's descender.
- glyphData.verticalOffset += static_cast<int32_t>(-line.descender + GetPostOffsetVerticalLineAlignment(line, verLineAlign));
- }
-
- return glyphData.bitmapBuffer;
-}
-
-/// Draws the specified strikethrough color to the buffer
-void DrawStrikethrough(const uint32_t bufferWidth,
- const uint32_t bufferHeight,
- GlyphData& glyphData,
- const float baseline,
- const float strikethroughStartingYPosition,
- const float maxStrikethroughHeight,
- const float lineExtentLeft,
- const float lineExtentRight,
- const StrikethroughStyleProperties& commonStrikethroughProperties,
- const StrikethroughStyleProperties& currentStrikethroughProperties,
- const LineRun& line)
-{
- const Vector4& strikethroughColor = currentStrikethroughProperties.colorDefined ? currentStrikethroughProperties.color : commonStrikethroughProperties.color;
-
- const uint32_t yRangeMin = static_cast<uint32_t>(strikethroughStartingYPosition);
- const uint32_t yRangeMax = std::min(bufferHeight, static_cast<uint32_t>(strikethroughStartingYPosition + maxStrikethroughHeight));
- const uint32_t xRangeMin = static_cast<uint32_t>(glyphData.horizontalOffset + lineExtentLeft);
- const uint32_t xRangeMax = std::min(bufferWidth, static_cast<uint32_t>(glyphData.horizontalOffset + lineExtentRight + 1)); // Due to include last point, we add 1 here
-
- // If current glyph don't need to be rendered, just ignore.
- if(yRangeMax <= yRangeMin || xRangeMax <= xRangeMin)
- {
- return;
- }
-
- // We can optimize by memset when strikethroughColor.a is near zero
- uint8_t strikethroughColorAlpha = static_cast<uint8_t>(strikethroughColor.a * 255.f);
-
- uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer());
-
- // Skip yRangeMin line.
- bitmapBuffer += yRangeMin * glyphData.width;
-
- if(strikethroughColorAlpha == 0)
- {
- for(uint32_t y = yRangeMin; y < yRangeMax; y++)
- {
- // We can use memset.
- memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
- bitmapBuffer += glyphData.width;
- }
- }
- else
- {
- uint32_t packedStrikethroughColor = 0u;
- uint8_t* packedStrikethroughColorBuffer = reinterpret_cast<uint8_t*>(&packedStrikethroughColor);
-
- // Write the color to the pixel buffer
- *(packedStrikethroughColorBuffer + 3u) = strikethroughColorAlpha;
- *(packedStrikethroughColorBuffer + 2u) = static_cast<uint8_t>(strikethroughColor.b * strikethroughColorAlpha);
- *(packedStrikethroughColorBuffer + 1u) = static_cast<uint8_t>(strikethroughColor.g * strikethroughColorAlpha);
- *(packedStrikethroughColorBuffer) = static_cast<uint8_t>(strikethroughColor.r * strikethroughColorAlpha);
-
- for(uint32_t y = yRangeMin; y < yRangeMax; y++)
- {
- for(uint32_t x = xRangeMin; x < xRangeMax; x++)
- {
- // Note : this is same logic as bitmap[y][x] = strikethroughColor;
- *(bitmapBuffer + x) = packedStrikethroughColor;
- }
- bitmapBuffer += glyphData.width;
- }
- }
-}
-
-/**
- * @brief Create an initialized image buffer filled with transparent color.
- *
- * Creates the pixel data used to generate the final image with the given size.
- *
- * @param[in] bufferWidth The width of the image buffer.
- * @param[in] bufferHeight The height of the image buffer.
- * @param[in] pixelFormat The format of the pixel in the image that the text is rendered as (i.e. either Pixel::BGRA8888 or Pixel::L8).
- *
- * @return An image buffer.
- */
-inline Devel::PixelBuffer CreateTransparentImageBuffer(const uint32_t bufferWidth, const uint32_t bufferHeight, const Pixel::Format pixelFormat)
-{
- Devel::PixelBuffer imageBuffer = Devel::PixelBuffer::New(bufferWidth, bufferHeight, pixelFormat);
-
- if(Pixel::RGBA8888 == pixelFormat)
- {
- const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
- const size_t bufferSizeChar = sizeof(uint32_t) * static_cast<std::size_t>(bufferSizeInt);
- memset(imageBuffer.GetBuffer(), 0, bufferSizeChar);
- }
- else
- {
- memset(imageBuffer.GetBuffer(), 0, static_cast<std::size_t>(bufferWidth * bufferHeight));
- }
-
- return imageBuffer;
+ return ((res + ((res + 257) >> 8)) >> 8); // fast divide by 255.
}
/**
uint32_t* topBuffer = reinterpret_cast<uint32_t*>(topPixelBuffer.GetBuffer());
uint32_t* bottomBuffer = reinterpret_cast<uint32_t*>(bottomPixelBuffer.GetBuffer());
- if(topBuffer == NULL && bottomBuffer == NULL)
+ if(topBuffer == nullptr && bottomBuffer == nullptr)
{
// Nothing to do if both buffers are empty.
return;
}
- if(topBuffer == NULL)
+ if(topBuffer == nullptr)
{
// Nothing to do if topBuffer is empty.
// If we need to store the result into top, change topPixelBuffer as bottomPixelBuffer.
return;
}
- if(bottomBuffer == NULL)
+ if(bottomBuffer == nullptr)
{
// Nothing to do if bottomBuffer is empty.
// If we need to store the result into bottom, change bottomPixelBuffer as topPixelBuffer.
ViewModel* Typesetter::GetViewModel()
{
- return mModel;
+ return mImpl->GetViewModel();
}
void Typesetter::SetFontClient(TextAbstraction::FontClient& fontClient)
{
- mFontClient = fontClient;
+ mImpl->SetFontClient(fontClient);
}
PixelData Typesetter::Render(const Vector2& size, Toolkit::DevelText::TextDirection::Type textDirection, RenderBehaviour behaviour, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat)
{
- Devel::PixelBuffer result = RenderWithPixelBuffer(size, textDirection, behaviour, ignoreHorizontalAlignment, pixelFormat);
- PixelData pixelData = Devel::PixelBuffer::Convert(result);
+ Devel::PixelBuffer result = RenderWithPixelBuffer(size, textDirection, behaviour, ignoreHorizontalAlignment, pixelFormat);
+ PixelData pixelData = Devel::PixelBuffer::Convert(result);
return pixelData;
}
DALI_TRACE_SCOPE(gTraceFilter, "DALI_TEXT_RENDERING_TYPESETTER");
// @todo. This initial implementation for a TextLabel has only one visible page.
+ // Use l-value to make ensure it is not nullptr, so compiler happy.
+ auto& viewModel = *(mImpl->GetViewModel());
+
// Elides the text if needed.
- mModel->ElideGlyphs(mFontClient);
+ viewModel.ElideGlyphs(mImpl->GetFontClient());
// Retrieves the layout size.
- const Size& layoutSize = mModel->GetLayoutSize();
- const int32_t outlineWidth = static_cast<int32_t>(mModel->GetOutlineWidth());
+ const Size& layoutSize = viewModel.GetLayoutSize();
+ const int32_t outlineWidth = static_cast<int32_t>(viewModel.GetOutlineWidth());
// Set the offset for the horizontal alignment according to the text direction and outline width.
int32_t penX = 0;
- switch(mModel->GetHorizontalAlignment())
+ switch(viewModel.GetHorizontalAlignment())
{
case HorizontalAlignment::BEGIN:
{
// Set the offset for the vertical alignment.
int32_t penY = 0u;
- switch(mModel->GetVerticalAlignment())
+ switch(viewModel.GetVerticalAlignment())
{
case VerticalAlignment::TOP:
{
}
}
- const bool isCutoutEnabled = mModel->IsCutoutEnabled();
+ const bool isCutoutEnabled = viewModel.IsCutoutEnabled();
if(isCutoutEnabled)
{
- Vector2 offset = mModel->GetOffsetWithCutout();
- penX = offset.x;
- penY = offset.y;
+ Vector2 offset = viewModel.GetOffsetWithCutout();
+ penX = offset.x;
+ penY = offset.y;
}
// Generate the image buffers of the text for each different style first,
const size_t bufferSizeChar = sizeof(uint32_t) * static_cast<std::size_t>(bufferSizeInt);
//Elided text in ellipsis at START could start on index greater than 0
- auto startIndexOfGlyphs = mModel->GetStartIndexOfElidedGlyphs();
- auto endIndexOfGlyphs = mModel->GetEndIndexOfElidedGlyphs();
+ auto startIndexOfGlyphs = viewModel.GetStartIndexOfElidedGlyphs();
+ auto endIndexOfGlyphs = viewModel.GetEndIndexOfElidedGlyphs();
Devel::PixelBuffer imageBuffer;
if(RENDER_MASK == behaviour)
{
// Generate the image buffer as an alpha mask for color glyphs.
- imageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_MASK, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
+ imageBuffer = mImpl->CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_MASK, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
}
else if(RENDER_NO_TEXT == behaviour || RENDER_OVERLAY_STYLE == behaviour)
{
else
{
// Generate the image buffer for the text with no style.
- imageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_NONE, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
+ imageBuffer = mImpl->CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_NONE, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
}
if((RENDER_NO_STYLES != behaviour) && (RENDER_MASK != behaviour))
{
// Generate the outline if enabled
- const uint16_t outlineWidth = mModel->GetOutlineWidth();
- const float outlineAlpha = mModel->GetOutlineColor().a;
+ const uint16_t outlineWidth = viewModel.GetOutlineWidth();
+ const float outlineAlpha = viewModel.GetOutlineColor().a;
if(outlineWidth != 0u && fabsf(outlineAlpha) > Math::MACHINE_EPSILON_1 && RENDER_OVERLAY_STYLE != behaviour)
{
// Create the image buffer for outline
- Devel::PixelBuffer outlineImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_OUTLINE, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
+ Devel::PixelBuffer outlineImageBuffer = mImpl->CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_OUTLINE, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
- const float& blurRadius = mModel->GetOutlineBlurRadius();
+ const float& blurRadius = viewModel.GetOutlineBlurRadius();
if(blurRadius > Math::MACHINE_EPSILON_1)
{
// @todo. Support shadow for partial text later on.
// Generate the shadow if enabled
- const Vector2& shadowOffset = mModel->GetShadowOffset();
- const float shadowAlpha = mModel->GetShadowColor().a;
+ const Vector2& shadowOffset = viewModel.GetShadowOffset();
+ const float shadowAlpha = viewModel.GetShadowColor().a;
if(RENDER_OVERLAY_STYLE != behaviour && fabsf(shadowAlpha) > Math::MACHINE_EPSILON_1 && (fabsf(shadowOffset.x) > Math::MACHINE_EPSILON_1 || fabsf(shadowOffset.y) > Math::MACHINE_EPSILON_1))
{
// Create the image buffer for shadow
- Devel::PixelBuffer shadowImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_SHADOW, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
+ Devel::PixelBuffer shadowImageBuffer = mImpl->CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_SHADOW, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
// Check whether it will be a soft shadow
- const float& blurRadius = mModel->GetShadowBlurRadius();
+ const float& blurRadius = viewModel.GetShadowBlurRadius();
if(blurRadius > Math::MACHINE_EPSILON_1)
{
}
// Generate the background if enabled
- const bool backgroundEnabled = mModel->IsBackgroundEnabled();
- const bool backgroundMarkupSet = mModel->IsMarkupBackgroundColorSet();
+ const bool backgroundEnabled = viewModel.IsBackgroundEnabled();
+ const bool backgroundMarkupSet = viewModel.IsMarkupBackgroundColorSet();
if((backgroundEnabled || backgroundMarkupSet) && RENDER_OVERLAY_STYLE != behaviour)
{
Devel::PixelBuffer backgroundImageBuffer;
if(backgroundEnabled)
{
- backgroundImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_BACKGROUND, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
+ backgroundImageBuffer = mImpl->CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_BACKGROUND, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
}
else
{
- backgroundImageBuffer = CreateTransparentImageBuffer(bufferWidth, bufferHeight, pixelFormat);
+ backgroundImageBuffer = Impl::CreateTransparentImageBuffer(bufferWidth, bufferHeight, pixelFormat);
}
if(backgroundMarkupSet)
{
- DrawGlyphsBackground(mModel, backgroundImageBuffer, bufferWidth, bufferHeight, ignoreHorizontalAlignment, penX, penY);
+ mImpl->DrawGlyphsBackground(backgroundImageBuffer, bufferWidth, bufferHeight, ignoreHorizontalAlignment, penX, penY);
}
// Combine the two buffers
}
// Generate the background_with_mask if enabled
- const bool backgroundWithCutoutEnabled = mModel->IsBackgroundWithCutoutEnabled();
+ const bool backgroundWithCutoutEnabled = viewModel.IsBackgroundWithCutoutEnabled();
if((backgroundWithCutoutEnabled) && RENDER_OVERLAY_STYLE != behaviour)
{
Devel::PixelBuffer backgroundImageBuffer;
- backgroundImageBuffer = CreateFullBackgroundBuffer(bufferWidth, bufferHeight, mModel->GetBackgroundColorWithCutout());
+ backgroundImageBuffer = CreateFullBackgroundBuffer(bufferWidth, bufferHeight, viewModel.GetBackgroundColorWithCutout());
// Combine the two buffers
CombineImageBuffer(imageBuffer, backgroundImageBuffer, bufferWidth, bufferHeight, true);
if(RENDER_OVERLAY_STYLE == behaviour)
{
- if(mModel->IsUnderlineEnabled())
+ if(viewModel.IsUnderlineEnabled())
{
// Create the image buffer for underline
- Devel::PixelBuffer underlineImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_UNDERLINE, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
+ Devel::PixelBuffer underlineImageBuffer = mImpl->CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_UNDERLINE, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
// Combine the two buffers
CombineImageBuffer(imageBuffer, underlineImageBuffer, bufferWidth, bufferHeight, true);
}
- if(mModel->IsStrikethroughEnabled())
+ if(viewModel.IsStrikethroughEnabled())
{
// Create the image buffer for strikethrough
- Devel::PixelBuffer strikethroughImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_STRIKETHROUGH, ignoreHorizontalAlignment, pixelFormat, penX, penY, 0u, endIndexOfGlyphs);
+ Devel::PixelBuffer strikethroughImageBuffer = mImpl->CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_STRIKETHROUGH, ignoreHorizontalAlignment, pixelFormat, penX, penY, 0u, endIndexOfGlyphs);
// Combine the two buffers
CombineImageBuffer(imageBuffer, strikethroughImageBuffer, bufferWidth, bufferHeight, true);
}
// Markup-Processor for overlay styles
- if(mModel->IsMarkupProcessorEnabled() || mModel->IsSpannedTextPlaced())
+ if(viewModel.IsMarkupProcessorEnabled() || viewModel.IsSpannedTextPlaced())
{
- if(mModel->IsMarkupUnderlineSet())
+ if(viewModel.IsMarkupUnderlineSet())
{
imageBuffer = ApplyUnderlineMarkupImageBuffer(imageBuffer, bufferWidth, bufferHeight, ignoreHorizontalAlignment, pixelFormat, penX, penY);
}
- if(mModel->IsMarkupStrikethroughSet())
+ if(viewModel.IsMarkupStrikethroughSet())
{
imageBuffer = ApplyStrikethroughMarkupImageBuffer(imageBuffer, bufferWidth, bufferHeight, ignoreHorizontalAlignment, pixelFormat, penX, penY);
}
Devel::PixelBuffer Typesetter::CreateFullBackgroundBuffer(const uint32_t bufferWidth, const uint32_t bufferHeight, const Vector4& backgroundColor)
{
- const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
- uint8_t backgroundColorAlpha = static_cast<uint8_t>(backgroundColor.a * 255.f);
+ const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
+ uint8_t backgroundColorAlpha = static_cast<uint8_t>(backgroundColor.a * 255.f);
Devel::PixelBuffer buffer = Devel::PixelBuffer::New(bufferWidth, bufferHeight, Pixel::RGBA8888);
return buffer;
}
-Devel::PixelBuffer Typesetter::CreateImageBuffer(const uint32_t bufferWidth, const uint32_t bufferHeight, const Typesetter::Style style, const bool ignoreHorizontalAlignment, const Pixel::Format pixelFormat, const int32_t horizontalOffset, const int32_t verticalOffset, const GlyphIndex fromGlyphIndex, const GlyphIndex toGlyphIndex)
-{
- // Retrieve lines, glyphs, positions and colors from the view model.
- const Length modelNumberOfLines = mModel->GetNumberOfLines();
- const LineRun* const __restrict__ modelLinesBuffer = mModel->GetLines();
- const GlyphInfo* const __restrict__ glyphsBuffer = mModel->GetGlyphs();
- const Vector2* const __restrict__ positionBuffer = mModel->GetLayout();
- const Vector4* const __restrict__ colorsBuffer = mModel->GetColors();
- const ColorIndex* const __restrict__ colorIndexBuffer = mModel->GetColorIndices();
- const GlyphInfo* __restrict__ hyphens = mModel->GetHyphens();
- const Length* __restrict__ hyphenIndices = mModel->GetHyphenIndices();
- const Length hyphensCount = mModel->GetHyphensCount();
- const bool removeFrontInset = mModel->IsRemoveFrontInset();
- const bool removeBackInset = mModel->IsRemoveBackInset();
- const bool cutoutEnabled = mModel->IsCutoutEnabled();
-
- // Elided text info. Indices according to elided text and Ellipsis position.
- const auto startIndexOfGlyphs = mModel->GetStartIndexOfElidedGlyphs();
- const auto endIndexOfGlyphs = mModel->GetEndIndexOfElidedGlyphs();
- const auto firstMiddleIndexOfElidedGlyphs = mModel->GetFirstMiddleIndexOfElidedGlyphs();
- const auto secondMiddleIndexOfElidedGlyphs = mModel->GetSecondMiddleIndexOfElidedGlyphs();
- const auto ellipsisPosition = mModel->GetEllipsisPosition();
-
- // Whether to use the default color.
- const bool useDefaultColor = (NULL == colorsBuffer);
- const Vector4& defaultColor = mModel->GetDefaultColor();
-
- // Create and initialize the pixel buffer.
- GlyphData glyphData;
- glyphData.verticalOffset = verticalOffset;
- glyphData.width = bufferWidth;
- glyphData.height = bufferHeight;
- glyphData.bitmapBuffer = CreateTransparentImageBuffer(bufferWidth, bufferHeight, pixelFormat);
- glyphData.horizontalOffset = 0;
-
- // Get a handle of the font client. Used to retrieve the bitmaps of the glyphs.
- Length hyphenIndex = 0;
-
- const Character* __restrict__ textBuffer = mModel->GetTextBuffer();
- float calculatedAdvance = 0.f;
- const Vector<CharacterIndex>& __restrict__ glyphToCharacterMap = mModel->GetGlyphsToCharacters();
- const CharacterIndex* __restrict__ glyphToCharacterMapBuffer = glyphToCharacterMap.Begin();
-
- const DevelText::VerticalLineAlignment::Type verLineAlign = mModel->GetVerticalLineAlignment();
-
- // Traverses the lines of the text.
- for(LineIndex lineIndex = 0u; lineIndex < modelNumberOfLines; ++lineIndex)
- {
- const LineRun& line = *(modelLinesBuffer + lineIndex);
-
- // Sets the horizontal offset of the line.
- glyphData.horizontalOffset = ignoreHorizontalAlignment ? 0 : static_cast<int32_t>(line.alignmentOffset);
- glyphData.horizontalOffset += horizontalOffset;
-
- // Increases the vertical offset with the line's ascender.
- glyphData.verticalOffset += static_cast<int32_t>(line.ascender + GetPreOffsetVerticalLineAlignment(line, verLineAlign));
-
- // Retrieves the glyph's outline width
- float outlineWidth = static_cast<float>(mModel->GetOutlineWidth());
-
- if(style == Typesetter::STYLE_OUTLINE)
- {
- const Vector2& outlineOffset = mModel->GetOutlineOffset();
-
- glyphData.horizontalOffset -= outlineWidth;
- glyphData.horizontalOffset += outlineOffset.x;
- if(lineIndex == 0u)
- {
- // Only need to add the vertical outline offset for the first line
- glyphData.verticalOffset -= outlineWidth;
- glyphData.verticalOffset += outlineOffset.y;
- }
- }
- else if(style == Typesetter::STYLE_SHADOW)
- {
- const Vector2& shadowOffset = mModel->GetShadowOffset();
- glyphData.horizontalOffset += shadowOffset.x - outlineWidth; // if outline enabled then shadow should offset from outline
-
- if(lineIndex == 0u)
- {
- // Only need to add the vertical shadow offset for first line
- glyphData.verticalOffset += shadowOffset.y - outlineWidth;
- }
- }
-
- const bool underlineEnabled = mModel->IsUnderlineEnabled();
- const bool strikethroughEnabled = mModel->IsStrikethroughEnabled();
- const float modelCharacterSpacing = mModel->GetCharacterSpacing();
-
- // Get the character-spacing runs.
- const Vector<CharacterSpacingGlyphRun>& __restrict__ characterSpacingGlyphRuns = mModel->GetCharacterSpacingGlyphRuns();
-
- // Aggregate underline-style-properties from mModel
- const UnderlineStyleProperties modelUnderlineProperties{mModel->GetUnderlineType(),
- mModel->GetUnderlineColor(),
- mModel->GetUnderlineHeight(),
- mModel->GetDashedUnderlineGap(),
- mModel->GetDashedUnderlineWidth(),
- true,
- true,
- true,
- true,
- true};
-
- // Aggregate strikethrough-style-properties from mModel
- const StrikethroughStyleProperties modelStrikethroughProperties{mModel->GetStrikethroughColor(),
- mModel->GetStrikethroughHeight(),
- true,
- true};
-
- // Get the underline runs.
- const Length numberOfUnderlineRuns = mModel->GetNumberOfUnderlineRuns();
- Vector<UnderlinedGlyphRun> underlineRuns;
- underlineRuns.Resize(numberOfUnderlineRuns);
- mModel->GetUnderlineRuns(underlineRuns.Begin(), 0u, numberOfUnderlineRuns);
-
- // Get the strikethrough runs.
- const Length numberOfStrikethroughRuns = mModel->GetNumberOfStrikethroughRuns();
- Vector<StrikethroughGlyphRun> strikethroughRuns;
- strikethroughRuns.Resize(numberOfStrikethroughRuns);
- mModel->GetStrikethroughRuns(strikethroughRuns.Begin(), 0u, numberOfStrikethroughRuns);
-
- bool thereAreUnderlinedGlyphs = false;
- bool thereAreStrikethroughGlyphs = false;
-
- float currentUnderlinePosition = 0.0f;
- float currentUnderlineHeight = modelUnderlineProperties.height;
- float maxUnderlineHeight = currentUnderlineHeight;
- auto currentUnderlineProperties = modelUnderlineProperties;
-
- float currentStrikethroughHeight = modelStrikethroughProperties.height;
- float maxStrikethroughHeight = currentStrikethroughHeight;
- auto currentStrikethroughProperties = modelStrikethroughProperties;
- float strikethroughStartingYPosition = 0.0f;
-
- FontId lastFontId = 0;
-
- float lineExtentLeft = bufferWidth;
- float lineExtentRight = 0.0f;
- float baseline = 0.0f;
- bool addHyphen = false;
-
- // Traverses the glyphs of the line.
- const GlyphIndex startGlyphIndex = std::max(std::max(line.glyphRun.glyphIndex, startIndexOfGlyphs), fromGlyphIndex);
- GlyphIndex endGlyphIndex = (line.isSplitToTwoHalves ? line.glyphRunSecondHalf.glyphIndex + line.glyphRunSecondHalf.numberOfGlyphs : line.glyphRun.glyphIndex + line.glyphRun.numberOfGlyphs) - 1u;
- endGlyphIndex = std::min(std::min(endGlyphIndex, endIndexOfGlyphs), toGlyphIndex);
-
- for(GlyphIndex glyphIndex = startGlyphIndex; glyphIndex <= endGlyphIndex; ++glyphIndex)
- {
- //To handle START case of ellipsis, the first glyph has been shifted
- //glyphIndex represent indices in whole glyphs but elidedGlyphIndex represents indices in elided Glyphs
- GlyphIndex elidedGlyphIndex = glyphIndex - startIndexOfGlyphs;
-
- //To handle MIDDLE case of ellipsis, the first glyph in the second half of line has been shifted and skip the removed glyph from middle.
- if(ellipsisPosition == DevelText::EllipsisPosition::MIDDLE)
- {
- if(glyphIndex > firstMiddleIndexOfElidedGlyphs &&
- glyphIndex < secondMiddleIndexOfElidedGlyphs)
- {
- // Ignore any glyph that removed for MIDDLE ellipsis
- continue;
- }
- if(glyphIndex >= secondMiddleIndexOfElidedGlyphs)
- {
- elidedGlyphIndex -= (secondMiddleIndexOfElidedGlyphs - firstMiddleIndexOfElidedGlyphs - 1u);
- }
- }
-
- // Retrieve the glyph's info.
- const GlyphInfo* glyphInfo;
-
- if(addHyphen && hyphens)
- {
- glyphInfo = hyphens + hyphenIndex;
- hyphenIndex++;
- }
- else
- {
- glyphInfo = glyphsBuffer + elidedGlyphIndex;
- }
-
- if((glyphInfo->width < Math::MACHINE_EPSILON_1000) ||
- (glyphInfo->height < Math::MACHINE_EPSILON_1000))
- {
- // Nothing to do if the glyph's width or height is zero.
- continue;
- }
-
- Vector<UnderlinedGlyphRun>::ConstIterator currentUnderlinedGlyphRunIt = underlineRuns.End();
- const bool underlineGlyph = underlineEnabled || IsGlyphUnderlined(glyphIndex, underlineRuns, currentUnderlinedGlyphRunIt);
- currentUnderlineProperties = GetCurrentUnderlineProperties(glyphIndex, underlineGlyph, underlineRuns, currentUnderlinedGlyphRunIt, modelUnderlineProperties);
- currentUnderlineHeight = currentUnderlineProperties.height;
- thereAreUnderlinedGlyphs = thereAreUnderlinedGlyphs || underlineGlyph;
-
- Vector<StrikethroughGlyphRun>::ConstIterator currentStrikethroughGlyphRunIt = strikethroughRuns.End();
- const bool strikethroughGlyph = strikethroughEnabled || IsGlyphStrikethrough(glyphIndex, strikethroughRuns, currentStrikethroughGlyphRunIt);
- currentStrikethroughProperties = GetCurrentStrikethroughProperties(glyphIndex, strikethroughGlyph, strikethroughRuns, currentStrikethroughGlyphRunIt, modelStrikethroughProperties);
- currentStrikethroughHeight = currentStrikethroughProperties.height;
- thereAreStrikethroughGlyphs = thereAreStrikethroughGlyphs || strikethroughGlyph;
-
- // Are we still using the same fontId as previous
- if((glyphInfo->fontId != lastFontId) && (strikethroughGlyph || underlineGlyph))
- {
- // We need to fetch fresh font underline metrics
- FontMetrics fontMetrics;
- mFontClient.GetFontMetrics(glyphInfo->fontId, fontMetrics);
-
- //The currentUnderlinePosition will be used for both Underline and/or Strikethrough
- currentUnderlinePosition = FetchUnderlinePositionFromFontMetrics(fontMetrics);
-
- if(underlineGlyph)
- {
- CalcualteUnderlineHeight(fontMetrics, currentUnderlineHeight, maxUnderlineHeight);
- }
-
- if(strikethroughGlyph)
- {
- CalcualteStrikethroughHeight(currentStrikethroughHeight, maxStrikethroughHeight);
- }
-
- // Update lastFontId because fontId is changed
- lastFontId = glyphInfo->fontId; // Prevents searching for existing blocksizes when string of the same fontId.
- }
-
- // Retrieves the glyph's position.
- Vector2 position = *(positionBuffer + elidedGlyphIndex);
-
- if(addHyphen)
- {
- GlyphInfo tempInfo = *(glyphsBuffer + elidedGlyphIndex);
- const float characterSpacing = GetGlyphCharacterSpacing(glyphIndex, characterSpacingGlyphRuns, modelCharacterSpacing);
- calculatedAdvance = GetCalculatedAdvance(*(textBuffer + (*(glyphToCharacterMapBuffer + elidedGlyphIndex))), characterSpacing, tempInfo.advance);
- position.x = position.x + calculatedAdvance - tempInfo.xBearing + glyphInfo->xBearing;
- position.y = -glyphInfo->yBearing;
- }
-
- if(baseline < position.y + glyphInfo->yBearing)
- {
- baseline = position.y + glyphInfo->yBearing;
- }
-
- // Calculate the positions of leftmost and rightmost glyphs in the current line
- if(removeFrontInset)
- {
- if(position.x < lineExtentLeft)
- {
- lineExtentLeft = position.x;
- }
- }
- else
- {
- const float originPositionLeft = position.x - glyphInfo->xBearing;
- if(originPositionLeft < lineExtentLeft)
- {
- lineExtentLeft = originPositionLeft;
- }
- }
-
- if(removeBackInset)
- {
- if(position.x + glyphInfo->width > lineExtentRight)
- {
- lineExtentRight = position.x + glyphInfo->width;
- }
- }
- else
- {
- const float originPositionRight = position.x - glyphInfo->xBearing + glyphInfo->advance;
- if(originPositionRight > lineExtentRight)
- {
- lineExtentRight = originPositionRight;
- }
- }
-
- // Retrieves the glyph's color.
- const ColorIndex colorIndex = useDefaultColor ? 0u : *(colorIndexBuffer + glyphIndex);
-
- Vector4 color;
- if(style == Typesetter::STYLE_SHADOW)
- {
- color = mModel->GetShadowColor();
- }
- else if(style == Typesetter::STYLE_OUTLINE)
- {
- color = mModel->GetOutlineColor();
- }
- else
- {
- color = (useDefaultColor || (0u == colorIndex)) ? defaultColor : *(colorsBuffer + (colorIndex - 1u));
- }
-
- if(style == Typesetter::STYLE_NONE && cutoutEnabled)
- {
- // Temporarily adjust the transparency to 1.f
- color.a = 1.f;
- }
-
- // Premultiply alpha
- color.r *= color.a;
- color.g *= color.a;
- color.b *= color.a;
-
- // Retrieves the glyph's bitmap.
- glyphData.glyphBitmap.buffer = NULL;
- glyphData.glyphBitmap.width = glyphInfo->width; // Desired width and height.
- glyphData.glyphBitmap.height = glyphInfo->height;
-
- if(style != Typesetter::STYLE_OUTLINE && style != Typesetter::STYLE_SHADOW)
- {
- // Don't render outline for other styles
- outlineWidth = 0.0f;
- }
-
- if(style != Typesetter::STYLE_UNDERLINE && style != Typesetter::STYLE_STRIKETHROUGH)
- {
- mFontClient.CreateBitmap(glyphInfo->fontId,
- glyphInfo->index,
- glyphInfo->isItalicRequired,
- glyphInfo->isBoldRequired,
- glyphData.glyphBitmap,
- static_cast<int32_t>(outlineWidth));
- }
-
- // Sets the glyph's bitmap into the bitmap of the whole text.
- if(NULL != glyphData.glyphBitmap.buffer)
- {
- if(style == Typesetter::STYLE_OUTLINE)
- {
- // Set the position offset for the current glyph
- glyphData.horizontalOffset -= glyphData.glyphBitmap.outlineOffsetX;
- glyphData.verticalOffset -= glyphData.glyphBitmap.outlineOffsetY;
- }
-
- // Set the buffer of the glyph's bitmap into the final bitmap's buffer
- TypesetGlyph(glyphData,
- &position,
- &color,
- style,
- pixelFormat);
-
- if(style == Typesetter::STYLE_OUTLINE)
- {
- // Reset the position offset for the next glyph
- glyphData.horizontalOffset += glyphData.glyphBitmap.outlineOffsetX;
- glyphData.verticalOffset += glyphData.glyphBitmap.outlineOffsetY;
- }
-
- // free the glyphBitmap.buffer if it is owner of buffer
- if(glyphData.glyphBitmap.isBufferOwned)
- {
- free(glyphData.glyphBitmap.buffer);
- glyphData.glyphBitmap.isBufferOwned = false;
- }
- glyphData.glyphBitmap.buffer = NULL;
- }
-
- if(hyphenIndices)
- {
- while((hyphenIndex < hyphensCount) && (glyphIndex > hyphenIndices[hyphenIndex]))
- {
- hyphenIndex++;
- }
-
- addHyphen = ((hyphenIndex < hyphensCount) && ((glyphIndex + 1) == hyphenIndices[hyphenIndex]));
- if(addHyphen)
- {
- glyphIndex--;
- }
- }
- }
-
- // Draw the underline from the leftmost glyph to the rightmost glyph
- if(thereAreUnderlinedGlyphs && style == Typesetter::STYLE_UNDERLINE)
- {
- DrawUnderline(bufferWidth, bufferHeight, glyphData, baseline, currentUnderlinePosition, maxUnderlineHeight, lineExtentLeft, lineExtentRight, modelUnderlineProperties, currentUnderlineProperties, line);
- }
-
- // Draw the background color from the leftmost glyph to the rightmost glyph
- if(style == Typesetter::STYLE_BACKGROUND)
- {
- DrawBackgroundColor(mModel->GetBackgroundColor(), bufferWidth, bufferHeight, glyphData, baseline, line, lineExtentLeft, lineExtentRight);
- }
-
- // Draw the strikethrough from the leftmost glyph to the rightmost glyph
- if(thereAreStrikethroughGlyphs && style == Typesetter::STYLE_STRIKETHROUGH)
- {
- //TODO : The currently implemented strikethrough creates a strikethrough on the line level. We need to create different strikethroughs the case of glyphs with different sizes.
- strikethroughStartingYPosition = (glyphData.verticalOffset + baseline + currentUnderlinePosition) - ((line.ascender) * HALF); // Since Free Type font doesn't contain the strikethrough-position property, strikethrough position will be calculated by moving the underline position upwards by half the value of the line height.
- DrawStrikethrough(bufferWidth, bufferHeight, glyphData, baseline, strikethroughStartingYPosition, maxStrikethroughHeight, lineExtentLeft, lineExtentRight, modelStrikethroughProperties, currentStrikethroughProperties, line);
- }
-
- // Increases the vertical offset with the line's descender & line spacing.
- glyphData.verticalOffset += static_cast<int32_t>(-line.descender + GetPostOffsetVerticalLineAlignment(line, verLineAlign));
- }
-
- return glyphData.bitmapBuffer;
-}
-
Devel::PixelBuffer Typesetter::ApplyUnderlineMarkupImageBuffer(Devel::PixelBuffer topPixelBuffer, const uint32_t bufferWidth, const uint32_t bufferHeight, const bool ignoreHorizontalAlignment, const Pixel::Format pixelFormat, const int32_t horizontalOffset, const int32_t verticalOffset)
{
+ // Use l-value to make ensure it is not nullptr, so compiler happy.
+ auto& viewModel = *(mImpl->GetViewModel());
+
// Underline-tags (this is for Markup case)
// Get the underline runs.
- const Length numberOfUnderlineRuns = mModel->GetNumberOfUnderlineRuns();
+ const Length numberOfUnderlineRuns = viewModel.GetNumberOfUnderlineRuns();
Vector<UnderlinedGlyphRun> underlineRuns;
underlineRuns.Resize(numberOfUnderlineRuns);
- mModel->GetUnderlineRuns(underlineRuns.Begin(), 0u, numberOfUnderlineRuns);
+ viewModel.GetUnderlineRuns(underlineRuns.Begin(), 0u, numberOfUnderlineRuns);
// Iterate on the consecutive underlined glyph run and connect them into one chunk of underlined characters.
Vector<UnderlinedGlyphRun>::ConstIterator itGlyphRun = underlineRuns.Begin();
endGlyphIndex = startGlyphIndex + itGlyphRun->glyphRun.numberOfGlyphs - 1;
// Create the image buffer for underline
- Devel::PixelBuffer underlineImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_UNDERLINE, ignoreHorizontalAlignment, pixelFormat, horizontalOffset, verticalOffset, startGlyphIndex, endGlyphIndex);
+ Devel::PixelBuffer underlineImageBuffer = mImpl->CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_UNDERLINE, ignoreHorizontalAlignment, pixelFormat, horizontalOffset, verticalOffset, startGlyphIndex, endGlyphIndex);
// Combine the two buffers
// Result pixel buffer will be stored into topPixelBuffer.
CombineImageBuffer(underlineImageBuffer, topPixelBuffer, bufferWidth, bufferHeight, false);
Devel::PixelBuffer Typesetter::ApplyStrikethroughMarkupImageBuffer(Devel::PixelBuffer topPixelBuffer, const uint32_t bufferWidth, const uint32_t bufferHeight, const bool ignoreHorizontalAlignment, const Pixel::Format pixelFormat, const int32_t horizontalOffset, const int32_t verticalOffset)
{
+ // Use l-value to make ensure it is not nullptr, so compiler happy.
+ auto& viewModel = *(mImpl->GetViewModel());
+
// strikethrough-tags (this is for Markup case)
// Get the strikethrough runs.
- const Length numberOfStrikethroughRuns = mModel->GetNumberOfStrikethroughRuns();
+ const Length numberOfStrikethroughRuns = viewModel.GetNumberOfStrikethroughRuns();
Vector<StrikethroughGlyphRun> strikethroughRuns;
strikethroughRuns.Resize(numberOfStrikethroughRuns);
- mModel->GetStrikethroughRuns(strikethroughRuns.Begin(), 0u, numberOfStrikethroughRuns);
+ viewModel.GetStrikethroughRuns(strikethroughRuns.Begin(), 0u, numberOfStrikethroughRuns);
// Iterate on the consecutive strikethrough glyph run and connect them into one chunk of strikethrough characters.
Vector<StrikethroughGlyphRun>::ConstIterator itGlyphRun = strikethroughRuns.Begin();
endGlyphIndex = startGlyphIndex + itGlyphRun->glyphRun.numberOfGlyphs - 1;
// Create the image buffer for strikethrough
- Devel::PixelBuffer strikethroughImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_STRIKETHROUGH, ignoreHorizontalAlignment, pixelFormat, horizontalOffset, verticalOffset, startGlyphIndex, endGlyphIndex);
+ Devel::PixelBuffer strikethroughImageBuffer = mImpl->CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_STRIKETHROUGH, ignoreHorizontalAlignment, pixelFormat, horizontalOffset, verticalOffset, startGlyphIndex, endGlyphIndex);
// Combine the two buffers
// Result pixel buffer will be stored into topPixelBuffer.
CombineImageBuffer(strikethroughImageBuffer, topPixelBuffer, bufferWidth, bufferHeight, false);
uint32_t* topBuffer = reinterpret_cast<uint32_t*>(topPixelBuffer.GetBuffer());
uint32_t* bottomBuffer = reinterpret_cast<uint32_t*>(bottomPixelBuffer.GetBuffer());
- if(topBuffer == NULL || bottomBuffer == NULL)
+ if(topBuffer == nullptr || bottomBuffer == nullptr)
{
// Nothing to do if one of both buffers are empty.
return;
for(uint32_t pixelIndex = 0; pixelIndex < bufferSizeInt; ++pixelIndex)
{
- uint32_t topBufferColor = *(topBuffer);
- uint32_t bottomBufferColor = *(bottomBuffer);
- uint8_t* __restrict__ topBufferColorBuffer = reinterpret_cast<uint8_t*>(&topBufferColor);
+ uint32_t topBufferColor = *(topBuffer);
+ uint32_t bottomBufferColor = *(bottomBuffer);
+ uint8_t* __restrict__ topBufferColorBuffer = reinterpret_cast<uint8_t*>(&topBufferColor);
uint8_t* __restrict__ bottomBufferColorBuffer = reinterpret_cast<uint8_t*>(&bottomBufferColor);
// Return the transparency of the text to original.
uint8_t originAlphaInt = originAlpha * 255;
- uint8_t topAlpha = topBufferColorBuffer[3];
+ uint8_t topAlpha = topBufferColorBuffer[3];
uint8_t bottomAlpha = 255 - topAlpha;
// Manual blending.
}
Typesetter::Typesetter(const ModelInterface* const model)
-: mModel(new ViewModel(model)),
- mFontClient()
+: mImpl{std::make_unique<Impl>(model)}
{
- // Default font client set.
- mFontClient = TextAbstraction::FontClient::Get();
}
-Typesetter::~Typesetter()
-{
- delete mModel;
-}
+Typesetter::~Typesetter() = default;
} // namespace Text
projects / platform / core / uifw / dali-toolkit.git / commitdiff