{
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;
+}
+
/**
* @brief Data struct used to set the buffer of the glyph's bitmap into the final bitmap's buffer.
*/
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.
- unsigned int width; ///< The bitmap's width.
- unsigned int height; ///< The bitmap's height.
- int horizontalOffset; ///< The horizontal offset to be added to the 'x' glyph's position.
- int verticalOffset; ///< The vertical offset to be added to the 'y' glyph's position.
+ 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] data Struct which contains the glyph's data and the bitmap's data.
+ * @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.
return;
}
- const int widthMinusOne = static_cast<int>(data.width - 1u);
- const int heightMinusOne = static_cast<int>(data.height - 1u);
+ // 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 alphaIndex = 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)
{
- // 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 alphaIndex = glyphPixelSize - 1u;
- const bool swapChannelsBR = Pixel::BGRA8888 == data.glyphBitmap.format;
+ const bool swapChannelsBR = Pixel::BGRA8888 == data.glyphBitmap.format;
+
+ uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(data.bitmapBuffer.GetBuffer());
+
+ // 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)
+ {
+ const int32_t yOffsetIndex = yOffset + lineIndex;
+ const int32_t verticalOffset = yOffsetIndex * data.width;
+
+ // We can use memset here.
+ memset(bitmapBuffer + verticalOffset + xOffset + indexRangeMin, 0, (indexRangeMax - indexRangeMin) * sizeof(uint32_t));
+ }
+ return;
+ }
// Pointer to the color glyph if there is one.
const uint32_t* const colorGlyphBuffer = isColorGlyph ? reinterpret_cast<uint32_t*>(data.glyphBitmap.buffer) : NULL;
- // Initial vertical offset.
- const int yOffset = data.verticalOffset + position->y;
+ // Precalculate input color's packed result.
+ uint32_t packedInputColor = 0u;
+ uint8_t* packedInputColorBuffer = reinterpret_cast<uint8_t*>(&packedInputColor);
- uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(data.bitmapBuffer.GetBuffer());
+ *(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);
// Traverse the pixels of the glyph line per line.
- for(int lineIndex = 0, glyphHeight = static_cast<int>(data.glyphBitmap.height); lineIndex < glyphHeight; ++lineIndex)
+ for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
{
- const int yOffsetIndex = yOffset + lineIndex;
- if((0 > yOffsetIndex) || (yOffsetIndex > heightMinusOne))
- {
- // Do not write out of bounds.
- continue;
- }
+ const int32_t yOffsetIndex = yOffset + lineIndex;
- const int verticalOffset = yOffsetIndex * data.width;
- const int xOffset = data.horizontalOffset + position->x;
- const int glyphBufferOffset = lineIndex * static_cast<int>(data.glyphBitmap.width);
- for(int index = 0, glyphWidth = static_cast<int>(data.glyphBitmap.width); index < glyphWidth; ++index)
+ const int32_t verticalOffset = yOffsetIndex * data.width;
+ const int32_t glyphBufferOffset = lineIndex * static_cast<int32_t>(data.glyphBitmap.width);
+ for(int32_t index = indexRangeMin; index < indexRangeMax; ++index)
{
- const int xOffsetIndex = xOffset + index;
- if((0 > xOffsetIndex) || (xOffsetIndex > widthMinusOne))
- {
- // Don't write out of bounds.
- continue;
- }
+ const int32_t xOffsetIndex = xOffset + index;
if(isColorGlyph)
{
uint8_t* packedColorGlyphBuffer = reinterpret_cast<uint8_t*>(&packedColorGlyph);
// Update the alpha channel.
- if(Typesetter::STYLE_MASK == style || Typesetter::STYLE_OUTLINE == style) // Outline not shown for color glyph
+ const uint8_t colorAlpha = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 3u), *(packedColorGlyphBuffer + 3u));
+ *(packedColorGlyphBuffer + 3u) = colorAlpha;
+
+ if(Typesetter::STYLE_SHADOW == style)
{
- // Create an alpha mask for color glyph.
- *(packedColorGlyphBuffer + 3u) = 0u;
- *(packedColorGlyphBuffer + 2u) = 0u;
- *(packedColorGlyphBuffer + 1u) = 0u;
- *packedColorGlyphBuffer = 0u;
+ // 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
{
- const uint8_t colorAlpha = static_cast<uint8_t>(color->a * static_cast<float>(*(packedColorGlyphBuffer + 3u)));
- *(packedColorGlyphBuffer + 3u) = colorAlpha;
-
- if(Typesetter::STYLE_SHADOW == style)
+ if(swapChannelsBR)
{
- // The shadow of color glyph needs to have the shadow color.
- *(packedColorGlyphBuffer + 2u) = static_cast<uint8_t>(color->b * colorAlpha);
- *(packedColorGlyphBuffer + 1u) = static_cast<uint8_t>(color->g * colorAlpha);
- *packedColorGlyphBuffer = static_cast<uint8_t>(color->r * colorAlpha);
+ std::swap(*packedColorGlyphBuffer, *(packedColorGlyphBuffer + 2u)); // Swap B and R.
}
- else
+
+ *(packedColorGlyphBuffer + 2u) = MultiplyAndNormalizeColor(*(packedColorGlyphBuffer + 2u), colorAlpha);
+ *(packedColorGlyphBuffer + 1u) = MultiplyAndNormalizeColor(*(packedColorGlyphBuffer + 1u), colorAlpha);
+ *packedColorGlyphBuffer = MultiplyAndNormalizeColor(*packedColorGlyphBuffer, colorAlpha);
+
+ if(data.glyphBitmap.isColorBitmap)
{
- if(swapChannelsBR)
- {
- std::swap(*packedColorGlyphBuffer, *(packedColorGlyphBuffer + 2u)); // Swap B and R.
- }
-
- *(packedColorGlyphBuffer + 2u) = (*(packedColorGlyphBuffer + 2u) * colorAlpha / 255);
- *(packedColorGlyphBuffer + 1u) = (*(packedColorGlyphBuffer + 1u) * colorAlpha / 255);
- *packedColorGlyphBuffer = (*(packedColorGlyphBuffer)*colorAlpha / 255);
-
- if(data.glyphBitmap.isColorBitmap)
- {
- *(packedColorGlyphBuffer + 2u) = static_cast<uint8_t>(*(packedColorGlyphBuffer + 2u) * color->b);
- *(packedColorGlyphBuffer + 1u) = static_cast<uint8_t>(*(packedColorGlyphBuffer + 1u) * color->g);
- *packedColorGlyphBuffer = static_cast<uint8_t>(*packedColorGlyphBuffer * color->r);
- }
+ *(packedColorGlyphBuffer + 2u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 2u), *(packedColorGlyphBuffer + 2u));
+ *(packedColorGlyphBuffer + 1u) = MultiplyAndNormalizeColor(*(packedInputColorBuffer + 1u), *(packedColorGlyphBuffer + 1u));
+ *packedColorGlyphBuffer = MultiplyAndNormalizeColor(*packedInputColorBuffer, *packedColorGlyphBuffer);
}
}
// 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);
-
- // Color is pre-muliplied with its alpha.
- *(packedColorBuffer + 3u) = static_cast<uint8_t>(color->a * currentAlpha);
- *(packedColorBuffer + 2u) = static_cast<uint8_t>(color->b * currentAlpha);
- *(packedColorBuffer + 1u) = static_cast<uint8_t>(color->g * currentAlpha);
- *(packedColorBuffer) = static_cast<uint8_t>(color->r * currentAlpha);
-
- // Set the color into the final pixel buffer.
- currentColor = packedColor;
+ if(currentAlpha == 255)
+ {
+ // Fast-cut to avoid float type operation.
+ currentColor = packedInputColor;
+ }
+ else
+ {
+ // 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;
+ }
}
}
}
}
else
{
- // 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 alphaIndex = glyphPixelSize - 1u;
-
- // Initial vertical offset.
- const int yOffset = data.verticalOffset + position->y;
-
- uint8_t* bitmapBuffer = reinterpret_cast<uint8_t*>(data.bitmapBuffer.GetBuffer());
-
- // Traverse the pixels of the glyph line per line.
- for(int lineIndex = 0, glyphHeight = static_cast<int>(data.glyphBitmap.height); lineIndex < glyphHeight; ++lineIndex)
+ // Below codes required only if not color glyph.
+ if(!isColorGlyph)
{
- const int yOffsetIndex = yOffset + lineIndex;
- if((0 > yOffsetIndex) || (yOffsetIndex > heightMinusOne))
- {
- // Do not write out of bounds.
- continue;
- }
+ uint8_t* bitmapBuffer = reinterpret_cast<uint8_t*>(data.bitmapBuffer.GetBuffer());
- const int verticalOffset = yOffsetIndex * data.width;
- const int xOffset = data.horizontalOffset + position->x;
- const int glyphBufferOffset = lineIndex * static_cast<int>(data.glyphBitmap.width);
- for(int index = 0, glyphWidth = static_cast<int>(data.glyphBitmap.width); index < glyphWidth; ++index)
+ // Traverse the pixels of the glyph line per line.
+ for(int32_t lineIndex = lineIndexRangeMin; lineIndex < lineIndexRangeMax; ++lineIndex)
{
- const int xOffsetIndex = xOffset + index;
- if((0 > xOffsetIndex) || (xOffsetIndex > widthMinusOne))
- {
- // Don't write out of bounds.
- continue;
- }
+ const int32_t yOffsetIndex = yOffset + lineIndex;
- if(!isColorGlyph)
+ const int32_t verticalOffset = yOffsetIndex * data.width;
+ const int32_t glyphBufferOffset = lineIndex * static_cast<int32_t>(data.glyphBitmap.width);
+ for(int32_t index = indexRangeMin; index < indexRangeMax; ++index)
{
+ const int32_t xOffsetIndex = xOffset + index;
+
// Update the alpha channel.
const uint8_t alpha = *(data.glyphBitmap.buffer + glyphPixelSize * (glyphBufferOffset + index) + alphaIndex);
}
}
-/// Draws the specified color to the pixel buffer
-void WriteColorToPixelBuffer(
- GlyphData& glyphData,
- uint32_t* bitmapBuffer,
- const Vector4& color,
- const unsigned int x,
- const unsigned int y)
-{
- // Always RGBA image for text with styles
- uint32_t pixel = *(bitmapBuffer + y * glyphData.width + x);
- uint8_t* pixelBuffer = reinterpret_cast<uint8_t*>(&pixel);
-
- // Write the color to the pixel buffer
- uint8_t colorAlpha = static_cast<uint8_t>(color.a * 255.f);
- *(pixelBuffer + 3u) = colorAlpha;
- *(pixelBuffer + 2u) = static_cast<uint8_t>(color.b * colorAlpha);
- *(pixelBuffer + 1u) = static_cast<uint8_t>(color.g * colorAlpha);
- *(pixelBuffer) = static_cast<uint8_t>(color.r * colorAlpha);
-
- *(bitmapBuffer + y * glyphData.width + x) = pixel;
-}
-
/// Draws the specified underline color to the buffer
void DrawUnderline(
- const unsigned int bufferWidth,
- const unsigned int bufferHeight,
+ 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 float& baseline,
+ const float& currentUnderlinePosition,
+ const float& maxUnderlineHeight,
+ const float& lineExtentLeft,
+ const float& lineExtentRight,
const UnderlineStyleProperties& commonUnderlineProperties,
const UnderlineStyleProperties& currentUnderlineProperties,
const LineRun& line)
const float dashedUnderlineWidth = currentUnderlineProperties.dashWidthDefined ? currentUnderlineProperties.dashWidth : commonUnderlineProperties.dashWidth;
const float dashedUnderlineGap = currentUnderlineProperties.dashGapDefined ? currentUnderlineProperties.dashGap : commonUnderlineProperties.dashGap;
- int underlineYOffset = glyphData.verticalOffset + baseline + currentUnderlinePosition;
- uint32_t* bitmapBuffer = reinterpret_cast<uint32_t*>(glyphData.bitmapBuffer.GetBuffer());
+ 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);
- for(unsigned int y = underlineYOffset; y < underlineYOffset + maxUnderlineHeight; y++)
+ 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)
{
- if(y > bufferHeight - 1)
+ for(uint32_t y = yRangeMin; y < yRangeMax; y++)
{
- // Do not write out of bounds.
- break;
+ // We can use memset.
+ memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
+ bitmapBuffer += glyphData.width;
}
- if(underlineType == Text::Underline::DASHED)
+ if(underlineType == Text::Underline::DOUBLE)
{
- float dashWidth = dashedUnderlineWidth;
- float dashGap = 0;
+ 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))));
- for(unsigned int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++)
+ // 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++)
{
- if(x > bufferWidth - 1)
- {
- // Do not write out of bounds.
- break;
- }
- if(dashGap == 0 && dashWidth > 0)
- {
- WriteColorToPixelBuffer(glyphData, bitmapBuffer, underlineColor, x, y);
- dashWidth--;
- }
- else if(dashGap < dashedUnderlineGap)
- {
- dashGap++;
- }
- else
- {
- //reset
- dashWidth = dashedUnderlineWidth;
- dashGap = 0;
- }
+ // We can use memset.
+ memset(bitmapBuffer + xRangeMin, 0, (xRangeMax - xRangeMin) * sizeof(uint32_t));
+ bitmapBuffer += glyphData.width;
}
}
- else
+ }
+ 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++)
{
- for(unsigned int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++)
+ if(underlineType == Text::Underline::DASHED)
{
- if(x > bufferWidth - 1)
+ float dashWidth = dashedUnderlineWidth;
+ float dashGap = 0;
+
+ for(uint32_t x = xRangeMin; x < xRangeMax; x++)
{
- // Do not write out of bounds.
- break;
+ 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;
+ }
}
- WriteColorToPixelBuffer(glyphData, bitmapBuffer, underlineColor, x, y);
}
- }
- }
- if(underlineType == Text::Underline::DOUBLE)
- {
- int secondUnderlineYOffset = underlineYOffset - ONE_AND_A_HALF * maxUnderlineHeight;
- for(unsigned int y = secondUnderlineYOffset; y < secondUnderlineYOffset + maxUnderlineHeight; y++)
- {
- if(y > bufferHeight - 1)
+ else
{
- // Do not write out of bounds.
- break;
+ for(uint32_t x = xRangeMin; x < xRangeMax; x++)
+ {
+ // Note : this is same logic as bitmap[y][x] = underlineColor;
+ *(bitmapBuffer + x) = packedUnderlineColor;
+ }
}
- for(unsigned int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++)
+ 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++)
{
- if(x > bufferWidth - 1)
+ for(uint32_t x = xRangeMin; x < xRangeMax; x++)
{
- // Do not write out of bounds.
- break;
+ // Note : this is same logic as bitmap[y][x] = underlineColor;
+ *(bitmapBuffer + x) = packedUnderlineColor;
}
- WriteColorToPixelBuffer(glyphData, bitmapBuffer, underlineColor, x, y);
+ bitmapBuffer += glyphData.width;
}
}
}
/// Draws the background color to the buffer
void DrawBackgroundColor(
- Vector4 backgroundColor,
- const unsigned int bufferWidth,
- const unsigned int bufferHeight,
- GlyphData& glyphData,
- const float baseline,
- const LineRun& line,
- const float lineExtentLeft,
- const float lineExtentRight)
+ 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());
- for(int y = glyphData.verticalOffset + baseline - line.ascender; y < glyphData.verticalOffset + baseline - line.descender; y++)
+ // Skip yRangeMin line.
+ bitmapBuffer += yRangeMin * glyphData.width;
+
+ if(backgroundColorAlpha == 0)
{
- if((y < 0) || (y > static_cast<int>(bufferHeight - 1)))
+ for(int32_t y = yRangeMin; y < yRangeMax; y++)
{
- // Do not write out of bounds.
- continue;
+ // 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(int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++)
+ for(int32_t y = yRangeMin; y < yRangeMax; y++)
{
- if((x < 0) || (x > static_cast<int>(bufferWidth - 1)))
+ for(int32_t x = xRangeMin; x < xRangeMax; x++)
{
- // Do not write out of bounds.
- continue;
+ // Note : this is same logic as bitmap[y][x] = backgroundColor;
+ *(bitmapBuffer + x) = packedBackgroundColor;
}
-
- WriteColorToPixelBuffer(glyphData, bitmapBuffer, backgroundColor, x, y);
+ bitmapBuffer += glyphData.width;
}
}
}
-Devel::PixelBuffer DrawGlyphsBackground(const ViewModel* model, Devel::PixelBuffer& buffer, const unsigned int bufferWidth, const unsigned int bufferHeight, bool ignoreHorizontalAlignment, int horizontalOffset, int verticalOffset)
+Devel::PixelBuffer DrawGlyphsBackground(const ViewModel* model, Devel::PixelBuffer& buffer, const uint32_t& bufferWidth, const uint32_t& bufferHeight, bool ignoreHorizontalAlignment, int32_t horizontalOffset, int32_t verticalOffset)
{
// Retrieve lines, glyphs, positions and colors from the view model.
const Length modelNumberOfLines = model->GetNumberOfLines();
const LineRun& line = *(modelLinesBuffer + lineIndex);
// Sets the horizontal offset of the line.
- glyphData.horizontalOffset = ignoreHorizontalAlignment ? 0 : static_cast<int>(line.alignmentOffset);
+ 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<int>(line.ascender);
+ glyphData.verticalOffset += static_cast<int32_t>(line.ascender);
// Include line spacing after first line
if(lineIndex > 0u)
{
- glyphData.verticalOffset += static_cast<int>(line.lineSpacing);
+ glyphData.verticalOffset += static_cast<int32_t>(line.lineSpacing);
}
float left = bufferWidth;
}
// Increases the vertical offset with the line's descender.
- glyphData.verticalOffset += static_cast<int>(-line.descender);
+ glyphData.verticalOffset += static_cast<int32_t>(-line.descender);
}
return glyphData.bitmapBuffer;
}
/// Draws the specified strikethrough color to the buffer
-void DrawStrikethrough(const unsigned int bufferWidth,
- const unsigned int bufferHeight,
+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 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());
- for(unsigned int y = strikethroughStartingYPosition; y < strikethroughStartingYPosition + maxStrikethroughHeight; y++)
+ // Skip yRangeMin line.
+ bitmapBuffer += yRangeMin * glyphData.width;
+
+ if(strikethroughColorAlpha == 0)
{
- if(y > bufferHeight - 1)
+ for(uint32_t y = yRangeMin; y < yRangeMax; y++)
{
- // Do not write out of bounds.
- break;
+ // 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(unsigned int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++)
+ for(uint32_t y = yRangeMin; y < yRangeMax; y++)
{
- if(x > bufferWidth - 1)
+ for(uint32_t x = xRangeMin; x < xRangeMax; x++)
{
- // Do not write out of bounds.
- break;
+ // Note : this is same logic as bitmap[y][x] = strikethroughColor;
+ *(bitmapBuffer + x) = packedStrikethroughColor;
}
-
- WriteColorToPixelBuffer(glyphData, bitmapBuffer, strikethroughColor, x, y);
+ bitmapBuffer += glyphData.width;
}
}
}
-} // namespace
-
-TypesetterPtr Typesetter::New(const ModelInterface* const model)
-{
- return TypesetterPtr(new Typesetter(model));
-}
-
-ViewModel* Typesetter::GetViewModel()
-{
- return mModel;
-}
-
-Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, const unsigned int bufferHeight, Pixel::Format pixelFormat)
+/**
+ * @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 unsigned int bufferSizeInt = bufferWidth * bufferHeight;
- const unsigned int bufferSizeChar = 4u * bufferSizeInt;
- memset(imageBuffer.GetBuffer(), 0u, bufferSizeChar);
+ const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
+ const uint32_t bufferSizeChar = sizeof(uint32_t) * bufferSizeInt;
+ memset(imageBuffer.GetBuffer(), 0, bufferSizeChar);
}
else
{
return imageBuffer;
}
+/**
+ * @brief Combine the two RGBA image buffers together.
+ *
+ * The top layer buffer will blend over the bottom layer buffer:
+ * - If the pixel is not fully opaque from either buffer, it will be blended with
+ * the pixel from the other buffer and copied to the combined buffer.
+ * - If the pixels from both buffers are fully opaque, the pixels from the top layer
+ * buffer will be copied to the combined buffer.
+ *
+ * Due to the performance issue, We need to re-use input'ed pixelBuffer memory.
+ * We can determine which pixelBuffer's memory is destination
+ *
+ * @param[in, out] topPixelBuffer The top layer buffer.
+ * @param[in, out] bottomPixelBuffer The bottom layer buffer.
+ * @param[in] bufferWidth The width of the image buffer.
+ * @param[in] bufferHeight The height of the image buffer.
+ * @param[in] storeResultIntoTop True if we store the combined image buffer result into topPixelBuffer.
+ * False if we store the combined image buffer result into bottomPixelBuffer.
+ *
+ */
+void CombineImageBuffer(Devel::PixelBuffer& topPixelBuffer, Devel::PixelBuffer& bottomPixelBuffer, const uint32_t& bufferWidth, const uint32_t& bufferHeight, bool storeResultIntoTop)
+{
+ // 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 == NULL && bottomBuffer == NULL)
+ {
+ // Nothing to do if both buffers are empty.
+ return;
+ }
+
+ if(topBuffer == NULL)
+ {
+ // Nothing to do if topBuffer is empty.
+ // If we need to store the result into top, change topPixelBuffer as bottomPixelBuffer.
+ if(storeResultIntoTop)
+ {
+ topPixelBuffer = bottomPixelBuffer;
+ }
+ return;
+ }
+
+ if(bottomBuffer == NULL)
+ {
+ // Nothing to do if bottomBuffer is empty.
+ // If we need to store the result into bottom, change bottomPixelBuffer as topPixelBuffer.
+ if(!storeResultIntoTop)
+ {
+ bottomPixelBuffer = topPixelBuffer;
+ }
+ return;
+ }
+
+ const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
+
+ uint32_t* combinedBuffer = storeResultIntoTop ? topBuffer : bottomBuffer;
+ uint8_t* topAlphaBufferPointer = reinterpret_cast<uint8_t*>(topBuffer) + 3;
+
+ for(uint32_t pixelIndex = 0; pixelIndex < bufferSizeInt; ++pixelIndex)
+ {
+ // If the alpha of the pixel in either buffer is not fully opaque, blend the two pixels.
+ // Otherwise, copy pixel from topBuffer to combinedBuffer.
+ // Note : Be careful when we read & write into combinedBuffer. It can be write into same pointer.
+
+ uint8_t topAlpha = *topAlphaBufferPointer;
+
+ if(topAlpha == 0)
+ {
+ // Copy the pixel from bottomBuffer to combinedBuffer
+ if(storeResultIntoTop)
+ {
+ *(combinedBuffer) = *(bottomBuffer);
+ }
+ }
+ else if(topAlpha == 255)
+ {
+ // Copy the pixel from topBuffer to combinedBuffer
+ if(!storeResultIntoTop)
+ {
+ *(combinedBuffer) = *(topBuffer);
+ }
+ }
+ else
+ {
+ // At least one pixel is not fully opaque
+ // "Over" blend the the pixel from topBuffer with the pixel in bottomBuffer
+ uint32_t blendedBottomBufferColor = *(bottomBuffer);
+ uint8_t* blendedBottomBufferColorBuffer = reinterpret_cast<uint8_t*>(&blendedBottomBufferColor);
+
+ blendedBottomBufferColorBuffer[0] = MultiplyAndNormalizeColor(blendedBottomBufferColorBuffer[0], 255 - topAlpha);
+ blendedBottomBufferColorBuffer[1] = MultiplyAndNormalizeColor(blendedBottomBufferColorBuffer[1], 255 - topAlpha);
+ blendedBottomBufferColorBuffer[2] = MultiplyAndNormalizeColor(blendedBottomBufferColorBuffer[2], 255 - topAlpha);
+ blendedBottomBufferColorBuffer[3] = MultiplyAndNormalizeColor(blendedBottomBufferColorBuffer[3], 255 - topAlpha);
+
+ *(combinedBuffer) = *(topBuffer) + blendedBottomBufferColor;
+ }
+
+ // Increase each buffer's pointer.
+ ++combinedBuffer;
+ ++topBuffer;
+ ++bottomBuffer;
+ topAlphaBufferPointer += sizeof(uint32_t) / sizeof(uint8_t);
+ }
+}
+
+} // namespace
+
+TypesetterPtr Typesetter::New(const ModelInterface* const model)
+{
+ return TypesetterPtr(new Typesetter(model));
+}
+
+ViewModel* Typesetter::GetViewModel()
+{
+ return mModel;
+}
+
PixelData Typesetter::Render(const Vector2& size, Toolkit::DevelText::TextDirection::Type textDirection, RenderBehaviour behaviour, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat)
{
// @todo. This initial implementation for a TextLabel has only one visible page.
// Retrieves the layout size.
const Size& layoutSize = mModel->GetLayoutSize();
- const int outlineWidth = static_cast<int>(mModel->GetOutlineWidth());
+ const int32_t outlineWidth = static_cast<int32_t>(mModel->GetOutlineWidth());
// Set the offset for the horizontal alignment according to the text direction and outline width.
- int penX = 0;
+ int32_t penX = 0;
switch(mModel->GetHorizontalAlignment())
{
}
// Set the offset for the vertical alignment.
- int penY = 0u;
+ int32_t penY = 0u;
switch(mModel->GetVerticalAlignment())
{
}
case VerticalAlignment::CENTER:
{
- penY = static_cast<int>(0.5f * (size.height - layoutSize.height));
+ penY = static_cast<int32_t>(0.5f * (size.height - layoutSize.height));
penY = penY < 0.f ? 0.f : penY;
break;
}
case VerticalAlignment::BOTTOM:
{
- penY = static_cast<int>(size.height - layoutSize.height);
+ penY = static_cast<int32_t>(size.height - layoutSize.height);
break;
}
}
{
const auto& line = *mModel->GetLines();
penY -= line.descender;
- penY += static_cast<int>(line.lineSpacing * 0.5f + line.descender);
+ penY += static_cast<int32_t>(line.lineSpacing * 0.5f + line.descender);
break;
}
case DevelText::VerticalLineAlignment::BOTTOM:
{
const auto& line = *mModel->GetLines();
const auto lineHeight = line.ascender + (-line.descender) + line.lineSpacing;
- penY += static_cast<int>(lineHeight - (line.ascender - line.descender));
+ penY += static_cast<int32_t>(lineHeight - (line.ascender - line.descender));
break;
}
}
// do all of these in CPU only, so that once the final texture is generated,
// no calculation is needed in GPU during each frame.
- const unsigned int bufferWidth = static_cast<unsigned int>(size.width);
- const unsigned int bufferHeight = static_cast<unsigned int>(size.height);
+ const uint32_t bufferWidth = static_cast<uint32_t>(size.width);
+ const uint32_t bufferHeight = static_cast<uint32_t>(size.height);
- const unsigned int bufferSizeInt = bufferWidth * bufferHeight;
- const unsigned int bufferSizeChar = 4u * bufferSizeInt;
+ const uint32_t bufferSizeInt = bufferWidth * bufferHeight;
+ const uint32_t bufferSizeChar = sizeof(uint32_t) * bufferSizeInt;
//Elided text in ellipsis at START could start on index greater than 0
auto startIndexOfGlyphs = mModel->GetStartIndexOfElidedGlyphs();
Devel::PixelBuffer outlineImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_OUTLINE, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
// Combine the two buffers
- imageBuffer = CombineImageBuffer(imageBuffer, outlineImageBuffer, bufferWidth, bufferHeight);
+ CombineImageBuffer(imageBuffer, outlineImageBuffer, bufferWidth, bufferHeight, true);
}
// @todo. Support shadow and underline for partial text later on.
}
// Combine the two buffers
- imageBuffer = CombineImageBuffer(imageBuffer, shadowImageBuffer, bufferWidth, bufferHeight);
+ CombineImageBuffer(imageBuffer, shadowImageBuffer, bufferWidth, bufferHeight, true);
}
// Generate the underline if enabled
Devel::PixelBuffer underlineImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_UNDERLINE, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs);
// Combine the two buffers
- imageBuffer = CombineImageBuffer(imageBuffer, underlineImageBuffer, bufferWidth, bufferHeight);
+ CombineImageBuffer(imageBuffer, underlineImageBuffer, bufferWidth, bufferHeight, true);
}
// Generate the background if enabled
}
else
{
- backgroundImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, pixelFormat);
+ backgroundImageBuffer = CreateTransparentImageBuffer(bufferWidth, bufferHeight, pixelFormat);
}
if(backgroundMarkupSet)
}
// Combine the two buffers
- imageBuffer = CombineImageBuffer(imageBuffer, backgroundImageBuffer, bufferWidth, bufferHeight);
+ CombineImageBuffer(imageBuffer, backgroundImageBuffer, bufferWidth, bufferHeight, true);
}
// Generate the strikethrough if enabled
Devel::PixelBuffer strikethroughImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_STRIKETHROUGH, ignoreHorizontalAlignment, pixelFormat, penX, penY, 0u, endIndexOfGlyphs);
// Combine the two buffers
- imageBuffer = CombineImageBuffer(imageBuffer, strikethroughImageBuffer, bufferWidth, bufferHeight);
+ CombineImageBuffer(imageBuffer, strikethroughImageBuffer, bufferWidth, bufferHeight, true);
}
// Markup-Processor
return pixelData;
}
-Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, const unsigned int bufferHeight, Typesetter::Style style, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, int horizontalOffset, int verticalOffset, GlyphIndex fromGlyphIndex, GlyphIndex toGlyphIndex)
+Devel::PixelBuffer Typesetter::CreateImageBuffer(const uint32_t& bufferWidth, const uint32_t& bufferHeight, Typesetter::Style style, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, const int32_t& horizontalOffset, const int32_t& verticalOffset, GlyphIndex fromGlyphIndex, GlyphIndex toGlyphIndex)
{
// Retrieve lines, glyphs, positions and colors from the view model.
const Length modelNumberOfLines = mModel->GetNumberOfLines();
glyphData.verticalOffset = verticalOffset;
glyphData.width = bufferWidth;
glyphData.height = bufferHeight;
- glyphData.bitmapBuffer = CreateImageBuffer(bufferWidth, bufferHeight, pixelFormat);
+ glyphData.bitmapBuffer = CreateTransparentImageBuffer(bufferWidth, bufferHeight, pixelFormat);
glyphData.horizontalOffset = 0;
// Get a handle of the font client. Used to retrieve the bitmaps of the glyphs.
const LineRun& line = *(modelLinesBuffer + lineIndex);
// Sets the horizontal offset of the line.
- glyphData.horizontalOffset = ignoreHorizontalAlignment ? 0 : static_cast<int>(line.alignmentOffset);
+ 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<int>(line.ascender);
+ glyphData.verticalOffset += static_cast<int32_t>(line.ascender);
// Retrieves the glyph's outline width
float outlineWidth = static_cast<float>(mModel->GetOutlineWidth());
bool addHyphen = false;
// Traverses the glyphs of the line.
- const GlyphIndex startGlyphIndex = std::max(line.glyphRun.glyphIndex, startIndexOfGlyphs);
+ 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(endGlyphIndex, endIndexOfGlyphs);
+ endGlyphIndex = std::min(std::min(endGlyphIndex, endIndexOfGlyphs), toGlyphIndex);
for(GlyphIndex glyphIndex = startGlyphIndex; glyphIndex <= endGlyphIndex; ++glyphIndex)
{
- if(glyphIndex < fromGlyphIndex || glyphIndex > toGlyphIndex)
- {
- // Ignore any glyph that out of the specified range
- continue;
- }
-
//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;
glyphInfo->isItalicRequired,
glyphInfo->isBoldRequired,
glyphData.glyphBitmap,
- static_cast<int>(outlineWidth));
+ static_cast<int32_t>(outlineWidth));
}
// Sets the glyph's bitmap into the bitmap of the whole text.
}
// Increases the vertical offset with the line's descender & line spacing.
- glyphData.verticalOffset += static_cast<int>(-line.descender+line.lineSpacing);
+ glyphData.verticalOffset += static_cast<int32_t>(-line.descender + line.lineSpacing);
}
return glyphData.bitmapBuffer;
}
-Devel::PixelBuffer Typesetter::CombineImageBuffer(Devel::PixelBuffer topPixelBuffer, Devel::PixelBuffer bottomPixelBuffer, const unsigned int bufferWidth, const unsigned int bufferHeight)
-{
- unsigned char* topBuffer = topPixelBuffer.GetBuffer();
- unsigned char* bottomBuffer = bottomPixelBuffer.GetBuffer();
-
- Devel::PixelBuffer combinedPixelBuffer;
-
- if(topBuffer == NULL && bottomBuffer == NULL)
- {
- // Nothing to do if both buffers are empty.
- return combinedPixelBuffer;
- }
-
- if(topBuffer == NULL)
- {
- // Nothing to do if topBuffer is empty.
- return bottomPixelBuffer;
- }
-
- if(bottomBuffer == NULL)
- {
- // Nothing to do if bottomBuffer is empty.
- return topPixelBuffer;
- }
-
- // Always combine two RGBA images
- const unsigned int bufferSizeInt = bufferWidth * bufferHeight;
- const unsigned int bufferSizeChar = 4u * bufferSizeInt;
-
- combinedPixelBuffer = Devel::PixelBuffer::New(bufferWidth, bufferHeight, Pixel::RGBA8888);
- uint8_t* combinedBuffer = reinterpret_cast<uint8_t*>(combinedPixelBuffer.GetBuffer());
- memset(combinedBuffer, 0u, bufferSizeChar);
-
- for(unsigned int pixelIndex = 0; pixelIndex < bufferSizeInt; pixelIndex++)
- {
- // If the alpha of the pixel in either buffer is not fully opaque, blend the two pixels.
- // Otherwise, copy pixel from topBuffer to combinedBuffer.
-
- unsigned int alphaBuffer1 = topBuffer[pixelIndex * 4 + 3];
-
- if(alphaBuffer1 != 255)
- {
- // At least one pixel is not fully opaque
- // "Over" blend the the pixel from topBuffer with the pixel in bottomBuffer
- combinedBuffer[pixelIndex * 4] = topBuffer[pixelIndex * 4] + (bottomBuffer[pixelIndex * 4] * (255 - topBuffer[pixelIndex * 4 + 3]) / 255);
- combinedBuffer[pixelIndex * 4 + 1] = topBuffer[pixelIndex * 4 + 1] + (bottomBuffer[pixelIndex * 4 + 1] * (255 - topBuffer[pixelIndex * 4 + 3]) / 255);
- combinedBuffer[pixelIndex * 4 + 2] = topBuffer[pixelIndex * 4 + 2] + (bottomBuffer[pixelIndex * 4 + 2] * (255 - topBuffer[pixelIndex * 4 + 3]) / 255);
- combinedBuffer[pixelIndex * 4 + 3] = topBuffer[pixelIndex * 4 + 3] + (bottomBuffer[pixelIndex * 4 + 3] * (255 - topBuffer[pixelIndex * 4 + 3]) / 255);
- }
- else
- {
- // Copy the pixel from topBuffer to combinedBuffer
- combinedBuffer[pixelIndex * 4] = topBuffer[pixelIndex * 4];
- combinedBuffer[pixelIndex * 4 + 1] = topBuffer[pixelIndex * 4 + 1];
- combinedBuffer[pixelIndex * 4 + 2] = topBuffer[pixelIndex * 4 + 2];
- combinedBuffer[pixelIndex * 4 + 3] = topBuffer[pixelIndex * 4 + 3];
- }
- }
-
- return combinedPixelBuffer;
-}
-
-Devel::PixelBuffer Typesetter::ApplyUnderlineMarkupImageBuffer(Devel::PixelBuffer topPixelBuffer, const unsigned int bufferWidth, const unsigned int bufferHeight, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, int horizontalOffset, int verticalOffset)
+Devel::PixelBuffer Typesetter::ApplyUnderlineMarkupImageBuffer(Devel::PixelBuffer topPixelBuffer, const uint32_t& bufferWidth, const uint32_t& bufferHeight, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, const int32_t& horizontalOffset, const int32_t& verticalOffset)
{
// Underline-tags (this is for Markup case)
// Get the underline runs.
// Create the image buffer for underline
Devel::PixelBuffer underlineImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_UNDERLINE, ignoreHorizontalAlignment, pixelFormat, horizontalOffset, verticalOffset, startGlyphIndex, endGlyphIndex);
// Combine the two buffers
- topPixelBuffer = CombineImageBuffer(underlineImageBuffer, topPixelBuffer, bufferWidth, bufferHeight);
+ // Result pixel buffer will be stored into topPixelBuffer.
+ CombineImageBuffer(underlineImageBuffer, topPixelBuffer, bufferWidth, bufferHeight, false);
itGlyphRun++;
}
return topPixelBuffer;
}
-Devel::PixelBuffer Typesetter::ApplyStrikethroughMarkupImageBuffer(Devel::PixelBuffer topPixelBuffer, const unsigned int bufferWidth, const unsigned int bufferHeight, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, int horizontalOffset, int verticalOffset)
+Devel::PixelBuffer Typesetter::ApplyStrikethroughMarkupImageBuffer(Devel::PixelBuffer topPixelBuffer, const uint32_t& bufferWidth, const uint32_t& bufferHeight, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, const int32_t& horizontalOffset, const int32_t& verticalOffset)
{
// strikethrough-tags (this is for Markup case)
// Get the strikethrough runs.
// Create the image buffer for strikethrough
Devel::PixelBuffer strikethroughImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_STRIKETHROUGH, ignoreHorizontalAlignment, pixelFormat, horizontalOffset, verticalOffset, startGlyphIndex, endGlyphIndex);
// Combine the two buffers
- topPixelBuffer = CombineImageBuffer(strikethroughImageBuffer, topPixelBuffer, bufferWidth, bufferHeight);
+ // Result pixel buffer will be stored into topPixelBuffer.
+ CombineImageBuffer(strikethroughImageBuffer, topPixelBuffer, bufferWidth, bufferHeight, false);
itGlyphRun++;
}
return topPixelBuffer;
}
-Devel::PixelBuffer Typesetter::ApplyMarkupProcessorOnPixelBuffer(Devel::PixelBuffer topPixelBuffer, const unsigned int bufferWidth, const unsigned int bufferHeight, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, int horizontalOffset, int verticalOffset)
+Devel::PixelBuffer Typesetter::ApplyMarkupProcessorOnPixelBuffer(Devel::PixelBuffer topPixelBuffer, const uint32_t& bufferWidth, const uint32_t& bufferHeight, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, const int32_t& horizontalOffset, const int32_t& verticalOffset)
{
// Apply the markup-Processor if enabled
const bool markupProcessorEnabled = mModel->IsMarkupProcessorEnabled();
projects / platform / core / uifw / dali-toolkit.git / commitdiff