/*
- * Copyright (c) 2022 Samsung Electronics Co., Ltd.
+ * 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.
// 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/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
{
namespace
{
-const float HALF(0.5f);
-const float ONE_AND_A_HALF(1.5f);
+DALI_INIT_TRACE_FILTER(gTraceFilter, DALI_TRACE_TEXT_PERFORMANCE_MARKER, false);
/**
* @brief Fast multiply & divide by 255. It wiil be useful when we applying alpha value in color
}
/**
- * @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::FontClient::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.
+ * @brief Fast multiply & Summation & divide by 255.
*
- * @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).
+ * @param x1 The value between [0..255]
+ * @param y1 The value between [0..255]
+ * @param x2 The value between [0..255]
+ * @param y2 The value between [0..255]
+ * @return min(255, (x1*y1)/255 + (x2*y2)/255)
*/
-void TypesetGlyph(GlyphData& __restrict__ data,
- const Vector2* const __restrict__ position,
- const Vector4* const __restrict__ color,
- const Typesetter::Style style,
- const Pixel::Format pixelFormat)
+inline uint8_t MultiplyAndSummationAndNormalizeColor(const uint8_t x1, const uint8_t y1, const uint8_t x2, const uint8_t y2) noexcept
{
- 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 - 1u;
-
- // 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;
-
- // Offset byte value of glyph bitmap.
- uint32_t glyphOffet = 0u;
-
- // Allocate scanline memory for glyph bitmap if we need.
- const bool useLocalScanline = data.glyphBitmap.compressionType != TextAbstraction::FontClient::GlyphBufferData::CompressionType::NO_COMPRESSION;
- uint8_t* __restrict__ glyphScanline = useLocalScanline ? (uint8_t*)malloc(data.glyphBitmap.width * glyphPixelSize) : data.glyphBitmap.buffer;
-
- // 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);
-
- // Skip basic line of glyph.
- if(useLocalScanline)
- {
- for(int32_t lineIndex = 0; lineIndex < lineIndexRangeMin; ++lineIndex)
- {
- TextAbstraction::FontClient::GlyphBufferData::DecompressScanline(data.glyphBitmap, glyphScanline, glyphOffet);
- }
- }
- else
- {
- glyphScanline += lineIndexRangeMin * static_cast<int32_t>(data.glyphBitmap.width * glyphPixelSize);
- }
-
- // Traverse the pixels of the glyph line per line.
- if(isColorGlyph)
- {
- for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
- {
- if(useLocalScanline)
- {
- TextAbstraction::FontClient::GlyphBufferData::DecompressScanline(data.glyphBitmap, glyphScanline, glyphOffet);
- }
-
- 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;
- if(!useLocalScanline)
- {
- glyphScanline += data.glyphBitmap.width * glyphPixelSize;
- }
- }
- }
- else
- {
- for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
- {
- if(useLocalScanline)
- {
- TextAbstraction::FontClient::GlyphBufferData::DecompressScanline(data.glyphBitmap, glyphScanline, glyphOffet);
- }
-
- 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;
- if(!useLocalScanline)
- {
- glyphScanline += data.glyphBitmap.width * glyphPixelSize;
- }
- }
- }
-
- if(useLocalScanline)
- {
- free(glyphScanline);
- }
- }
- else // Pixel::L8
- {
- // Below codes required only if not color glyph.
- if(!isColorGlyph)
- {
- uint8_t* __restrict__ bitmapBuffer = data.bitmapBuffer.GetBuffer();
-
- // Offset byte value of glyph bitmap.
- uint32_t glyphOffet = 0u;
-
- // Allocate scanline memory for glyph bitmap if we need.
- const bool useLocalScanline = data.glyphBitmap.compressionType != TextAbstraction::FontClient::GlyphBufferData::CompressionType::NO_COMPRESSION;
- uint8_t* __restrict__ glyphScanline = useLocalScanline ? (uint8_t*)malloc(data.glyphBitmap.width * glyphPixelSize) : data.glyphBitmap.buffer;
-
- // Skip basic line.
- bitmapBuffer += (lineIndexRangeMin + yOffset) * static_cast<int32_t>(data.width);
-
- // Skip basic line of glyph.
- if(useLocalScanline)
- {
- for(int32_t lineIndex = 0; lineIndex < lineIndexRangeMin; ++lineIndex)
- {
- TextAbstraction::FontClient::GlyphBufferData::DecompressScanline(data.glyphBitmap, glyphScanline, glyphOffet);
- }
- }
- else
- {
- glyphScanline += lineIndexRangeMin * static_cast<int32_t>(data.glyphBitmap.width * glyphPixelSize);
- }
-
- // Traverse the pixels of the glyph line per line.
- for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
- {
- if(useLocalScanline)
- {
- TextAbstraction::FontClient::GlyphBufferData::DecompressScanline(data.glyphBitmap, glyphScanline, glyphOffet);
- }
-
- 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;
- if(!useLocalScanline)
- {
- glyphScanline += data.glyphBitmap.width * glyphPixelSize;
- }
- }
-
- if(useLocalScanline)
- {
- free(glyphScanline);
- }
- }
- }
-}
-
-/// 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(dashGap == 0 && 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 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((position->x < left) || (backgroundColorIndex != prevBackgroundColorIndex))
- {
- left = position->x - glyphInfo->xBearing;
- }
-
- if(position->x + glyphInfo->width > right)
- {
- right = position->x - glyphInfo->xBearing + glyphInfo->advance;
- }
-
- 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;
+ 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.
}
/**
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)
+{
+ 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);
+
+ return pixelData;
+}
+
+PixelData Typesetter::RenderWithCutout(const Vector2& size, Toolkit::DevelText::TextDirection::Type textDirection, Devel::PixelBuffer mask, RenderBehaviour behaviour, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, float originAlpha)
+{
+ Devel::PixelBuffer result = RenderWithPixelBuffer(size, textDirection, behaviour, ignoreHorizontalAlignment, pixelFormat);
+ SetMaskForImageBuffer(mask, result, size.width, size.height, originAlpha);
+
+ PixelData pixelData = Devel::PixelBuffer::Convert(result);
+
+ return pixelData;
+}
+
+Devel::PixelBuffer Typesetter::RenderWithPixelBuffer(const Vector2& size, Toolkit::DevelText::TextDirection::Type textDirection, RenderBehaviour behaviour, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat)
+{
+ 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();
+ 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:
{
}
case VerticalAlignment::CENTER:
{
- penY = static_cast<int32_t>(0.5f * (size.height - layoutSize.height));
+ penY = static_cast<int32_t>(std::round(0.5f * (size.height - layoutSize.height)));
penY = penY < 0.f ? 0.f : penY;
+
break;
}
case VerticalAlignment::BOTTOM:
}
}
+ const bool isCutoutEnabled = viewModel.IsCutoutEnabled();
+ if(isCutoutEnabled)
+ {
+ Vector2 offset = viewModel.GetOffsetWithCutout();
+ penX = offset.x;
+ penY = offset.y;
+ }
+
// Generate the image buffers of the text for each different style first,
// then combine all of them together as one final image buffer. We try to
// do all of these in CPU only, so that once the final texture is generated,
const uint32_t bufferHeight = static_cast<uint32_t>(size.height);
const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
- const size_t bufferSizeChar = sizeof(uint32_t) * static_cast<std::size_t>(bufferSizeInt);
+ 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 = viewModel.GetOutlineBlurRadius();
+
+ if(blurRadius > Math::MACHINE_EPSILON_1)
+ {
+ outlineImageBuffer.ApplyGaussianBlur(blurRadius);
+ }
// Combine the two buffers
CombineImageBuffer(imageBuffer, outlineImageBuffer, bufferWidth, bufferHeight, true);
// @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
CombineImageBuffer(imageBuffer, backgroundImageBuffer, bufferWidth, bufferHeight, true);
}
+ // Generate the background_with_mask if enabled
+ const bool backgroundWithCutoutEnabled = viewModel.IsBackgroundWithCutoutEnabled();
+ if((backgroundWithCutoutEnabled) && RENDER_OVERLAY_STYLE != behaviour)
+ {
+ Devel::PixelBuffer backgroundImageBuffer;
+
+ 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);
}
}
}
- // Create the final PixelData for the combined image buffer
- PixelData pixelData = Devel::PixelBuffer::Convert(imageBuffer);
-
- return pixelData;
+ return imageBuffer;
}
-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)
+Devel::PixelBuffer Typesetter::CreateFullBackgroundBuffer(const uint32_t bufferWidth, const uint32_t bufferHeight, const Vector4& backgroundColor)
{
- // 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();
-
- // 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.
- TextAbstraction::FontClient fontClient = TextAbstraction::FontClient::Get();
- 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)
- {
- glyphData.horizontalOffset -= outlineWidth;
- if(lineIndex == 0u)
- {
- // Only need to add the vertical outline offset for the first line
- glyphData.verticalOffset -= outlineWidth;
- }
- }
- 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;
- fontClient.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;
- }
+ const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
+ uint8_t backgroundColorAlpha = static_cast<uint8_t>(backgroundColor.a * 255.f);
- // Calculate the positions of leftmost and rightmost glyphs in the current line
- if(position.x < lineExtentLeft)
- {
- lineExtentLeft = position.x;
- }
-
- if(position.x + glyphInfo->width > lineExtentRight)
- {
- lineExtentRight = position.x + glyphInfo->width;
- }
-
- // 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));
- }
+ Devel::PixelBuffer buffer = Devel::PixelBuffer::New(bufferWidth, bufferHeight, Pixel::RGBA8888);
- // Premultiply alpha
- color.r *= color.a;
- color.g *= color.a;
- color.b *= color.a;
+ uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(buffer.GetBuffer());
- // Retrieves the glyph's bitmap.
- glyphData.glyphBitmap.buffer = NULL;
- glyphData.glyphBitmap.width = glyphInfo->width; // Desired width and height.
- glyphData.glyphBitmap.height = glyphInfo->height;
+ uint32_t packedBackgroundColor = 0u;
+ uint8_t* packedBackgroundColorBuffer = reinterpret_cast<uint8_t*>(&packedBackgroundColor);
- if(style != Typesetter::STYLE_OUTLINE && style != Typesetter::STYLE_SHADOW)
- {
- // Don't render outline for other styles
- outlineWidth = 0.0f;
- }
+ // 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);
- if(style != Typesetter::STYLE_UNDERLINE && 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(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;
- }
+ std::fill(bitmapBuffer, bitmapBuffer + bufferSizeInt, packedBackgroundColor);
- // 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;
+ return buffer;
}
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);
return topPixelBuffer;
}
-Typesetter::Typesetter(const ModelInterface* const model)
-: mModel(new ViewModel(model))
+void Typesetter::SetMaskForImageBuffer(Devel::PixelBuffer& __restrict__ topPixelBuffer, Devel::PixelBuffer& __restrict__ bottomPixelBuffer, const uint32_t bufferWidth, const uint32_t bufferHeight, float originAlpha)
{
+ // Assume that we always combine two RGBA images
+ // Jump with 4bytes for optimize runtime.
+ uint32_t* topBuffer = reinterpret_cast<uint32_t*>(topPixelBuffer.GetBuffer());
+ uint32_t* bottomBuffer = reinterpret_cast<uint32_t*>(bottomPixelBuffer.GetBuffer());
+
+ if(topBuffer == nullptr || bottomBuffer == nullptr)
+ {
+ // Nothing to do if one of both buffers are empty.
+ return;
+ }
+
+ const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
+
+ 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);
+ 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 bottomAlpha = 255 - topAlpha;
+
+ // Manual blending.
+ bottomBufferColorBuffer[0] = MultiplyAndSummationAndNormalizeColor(topBufferColorBuffer[0], originAlphaInt, bottomBufferColorBuffer[0], bottomAlpha);
+ bottomBufferColorBuffer[1] = MultiplyAndSummationAndNormalizeColor(topBufferColorBuffer[1], originAlphaInt, bottomBufferColorBuffer[1], bottomAlpha);
+ bottomBufferColorBuffer[2] = MultiplyAndSummationAndNormalizeColor(topBufferColorBuffer[2], originAlphaInt, bottomBufferColorBuffer[2], bottomAlpha);
+ bottomBufferColorBuffer[3] = MultiplyAndSummationAndNormalizeColor(topBufferColorBuffer[3], originAlphaInt, bottomBufferColorBuffer[3], bottomAlpha);
+
+ *(bottomBuffer) = bottomBufferColor;
+
+ // Increase each buffer's pointer.
+ ++topBuffer;
+ ++bottomBuffer;
+ }
}
-Typesetter::~Typesetter()
+Typesetter::Typesetter(const ModelInterface* const model)
+: mImpl{std::make_unique<Impl>(model)}
{
- delete mModel;
}
+Typesetter::~Typesetter() = default;
+
} // namespace Text
} // namespace Toolkit
projects / platform / core / uifw / dali-toolkit.git / blobdiff