X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=dali-toolkit%2Finternal%2Ftext%2Frendering%2Ftext-typesetter.cpp;h=2e01c18cb64d49bf2d2fd003532e2914b5d9cc82;hb=177a529f5796ca4abe24fc5eafd7cddff423be3b;hp=40d96b847def2d645b0cec92a8eb099dd5f14206;hpb=3907251e7ae113572a758325504a1211dbcb4038;p=platform%2Fcore%2Fuifw%2Fdali-toolkit.git diff --git a/dali-toolkit/internal/text/rendering/text-typesetter.cpp b/dali-toolkit/internal/text/rendering/text-typesetter.cpp index 40d96b8..2e01c18 100644 --- a/dali-toolkit/internal/text/rendering/text-typesetter.cpp +++ b/dali-toolkit/internal/text/rendering/text-typesetter.cpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2021 Samsung Electronics Co., Ltd. + * Copyright (c) 2022 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. @@ -25,6 +25,7 @@ // INTERNAL INCLUDES #include +#include #include namespace Dali @@ -35,6 +36,7 @@ namespace Text { namespace { +const float HALF(0.5f); /** * @brief Data struct used to set the buffer of the glyph's bitmap into the final bitmap's buffer. */ @@ -274,15 +276,43 @@ bool IsGlyphUnderlined(GlyphIndex index, return false; } +bool doGlyphHaveStrikethrough(GlyphIndex index, + const Vector& strikethroughRuns, + Vector4& strikethroughColor) +{ + for(Vector::ConstIterator it = strikethroughRuns.Begin(), + endIt = strikethroughRuns.End(); + it != endIt; + ++it) + { + const StrikethroughGlyphRun& run = *it; + + if((run.glyphRun.glyphIndex <= index) && (index < run.glyphRun.glyphIndex + run.glyphRun.numberOfGlyphs)) + { + if(run.isColorSet) + { + strikethroughColor = run.color; + } + + return true; + } + } + + return false; +} + /// Helper method to fetch the underline metrics for the specified font glyph -void FetchFontUnderlineMetrics( +void FetchFontDecorationlinesMetrics( TextAbstraction::FontClient& fontClient, const GlyphInfo* const glyphInfo, float& currentUnderlinePosition, const float underlineHeight, float& currentUnderlineThickness, float& maxUnderlineThickness, - FontId& lastUnderlinedFontId) + FontId& lastlinedFontId, + const float strikethroughHeight, + float& currentStrikethroughThickness, + float& maxStrikethroughThickness) { FontMetrics fontMetrics; fontClient.GetFontMetrics(glyphInfo->fontId, fontMetrics); @@ -304,12 +334,31 @@ void FetchFontUnderlineMetrics( } } + if(fabsf(strikethroughHeight) < Math::MACHINE_EPSILON_1000) + { + // Ensure strikethrough will be at least a pixel high + if(currentStrikethroughThickness < 1.0f) + { + currentStrikethroughThickness = 1.0f; + } + else + { + currentStrikethroughThickness = ceil(currentStrikethroughThickness); + } + } + // The underline thickness should be the max underline thickness of all glyphs of the line. if(currentUnderlineThickness > maxUnderlineThickness) { maxUnderlineThickness = currentUnderlineThickness; } + // The strikethrough thickness should be the max strikethrough thickness of all glyphs of the line. + if(currentStrikethroughThickness > maxStrikethroughThickness) + { + maxStrikethroughThickness = currentStrikethroughThickness; + } + // Clamp the underline position at the font descender and check for ( as EFL describes it ) a broken font if(currentUnderlinePosition > descender) { @@ -322,7 +371,7 @@ void FetchFontUnderlineMetrics( currentUnderlinePosition = 1.0f; } - lastUnderlinedFontId = glyphInfo->fontId; + lastlinedFontId = glyphInfo->fontId; } /// Draws the specified color to the pixel buffer @@ -349,15 +398,19 @@ void WriteColorToPixelBuffer( /// Draws the specified underline color to the buffer void DrawUnderline( - const Vector4& underlineColor, - const unsigned int bufferWidth, - const unsigned int bufferHeight, - GlyphData& glyphData, - const float baseline, - const float currentUnderlinePosition, - const float maxUnderlineThickness, - const float lineExtentLeft, - const float lineExtentRight) + const Vector4& underlineColor, + const unsigned int bufferWidth, + const unsigned int bufferHeight, + GlyphData& glyphData, + const float baseline, + const float currentUnderlinePosition, + const float maxUnderlineThickness, + const float lineExtentLeft, + const float lineExtentRight, + const Text::Underline::Type underlineType, + const float dashedUnderlineWidth, + const float dashedUnderlineGap, + const LineRun& line) { int underlineYOffset = glyphData.verticalOffset + baseline + currentUnderlinePosition; uint32_t* bitmapBuffer = reinterpret_cast(glyphData.bitmapBuffer.GetBuffer()); @@ -369,16 +422,67 @@ void DrawUnderline( // Do not write out of bounds. break; } + if(underlineType == Text::Underline::DASHED) + { + float dashWidth = dashedUnderlineWidth; + float dashGap = 0; - for(unsigned int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++) + for(unsigned int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++) + { + 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; + } + } + } + else { - if(x > bufferWidth - 1) + for(unsigned int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++) + { + if(x > bufferWidth - 1) + { + // Do not write out of bounds. + break; + } + WriteColorToPixelBuffer(glyphData, bitmapBuffer, underlineColor, x, y); + } + } + } + if(underlineType == Text::Underline::DOUBLE) + { + int secondUnderlineYOffset = glyphData.verticalOffset - line.descender - maxUnderlineThickness; + for(unsigned int y = secondUnderlineYOffset; y < secondUnderlineYOffset + maxUnderlineThickness; y++) + { + if(y > bufferHeight - 1) { // Do not write out of bounds. break; } - - WriteColorToPixelBuffer(glyphData, bitmapBuffer, underlineColor, x, y); + for(unsigned int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++) + { + if(x > bufferWidth - 1) + { + // Do not write out of bounds. + break; + } + WriteColorToPixelBuffer(glyphData, bitmapBuffer, underlineColor, x, y); + } } } } @@ -417,6 +521,152 @@ void DrawBackgroundColor( } } +Devel::PixelBuffer DrawGlyphsBackground(const ViewModel* model, Devel::PixelBuffer& buffer, const unsigned int bufferWidth, const unsigned int bufferHeight, bool ignoreHorizontalAlignment, int horizontalOffset, int 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(); + + // 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(line.alignmentOffset); + glyphData.horizontalOffset += horizontalOffset; + + // Increases the vertical offset with the line's ascender. + glyphData.verticalOffset += static_cast(line.ascender); + + // Include line spacing after first line + if(lineIndex > 0u) + { + glyphData.verticalOffset += static_cast(line.lineSpacing); + } + + 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(-line.descender); + } + + return glyphData.bitmapBuffer; +} + +/// Draws the specified strikethrough color to the buffer +void DrawStrikethrough( + const Vector4& strikethroughColor, + const unsigned int bufferWidth, + const unsigned int bufferHeight, + GlyphData& glyphData, + const float baseline, + const LineRun& line, + const float maxStrikethroughThickness, + const float lineExtentLeft, + const float lineExtentRight, + float strikethroughStartingYPosition) +{ + uint32_t* bitmapBuffer = reinterpret_cast(glyphData.bitmapBuffer.GetBuffer()); + + for(unsigned int y = strikethroughStartingYPosition; y < strikethroughStartingYPosition + maxStrikethroughThickness; y++) + { + if(y > bufferHeight - 1) + { + // Do not write out of bounds. + break; + } + + for(unsigned int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++) + { + if(x > bufferWidth - 1) + { + // Do not write out of bounds. + break; + } + + WriteColorToPixelBuffer(glyphData, bitmapBuffer, strikethroughColor, x, y); + } + } +} + } // namespace TypesetterPtr Typesetter::New(const ModelInterface* const model) @@ -429,6 +679,24 @@ ViewModel* Typesetter::GetViewModel() return mModel; } +Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, const unsigned int bufferHeight, 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); + } + else + { + memset(imageBuffer.GetBuffer(), 0, bufferWidth * bufferHeight); + } + + return imageBuffer; +} + 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. @@ -520,16 +788,18 @@ PixelData Typesetter::Render(const Vector2& size, Toolkit::DevelText::TextDirect const unsigned int bufferSizeInt = bufferWidth * bufferHeight; const unsigned int bufferSizeChar = 4u * bufferSizeInt; - Length numberOfGlyphs = mModel->GetNumberOfGlyphs(); + //Elided text in ellipsis at START could start on index greater than 0 + auto startIndexOfGlyphs = mModel->GetStartIndexOfElidedGlyphs(); + auto endIndexOfGlyphs = mModel->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, 0u, numberOfGlyphs - 1); + imageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_MASK, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs); } - else if(RENDER_NO_TEXT == behaviour) + else if(RENDER_NO_TEXT == behaviour || RENDER_OVERLAY_STYLE == behaviour) { // Generate an empty image buffer so that it can been combined with the image buffers for styles imageBuffer = Devel::PixelBuffer::New(bufferWidth, bufferHeight, Pixel::RGBA8888); @@ -538,17 +808,17 @@ PixelData Typesetter::Render(const Vector2& size, Toolkit::DevelText::TextDirect else { // Generate the image buffer for the text with no style. - imageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_NONE, ignoreHorizontalAlignment, pixelFormat, penX, penY, 0u, numberOfGlyphs - 1); + imageBuffer = 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(); - if(outlineWidth != 0u) + if(outlineWidth != 0u && RENDER_OVERLAY_STYLE != behaviour) { // Create the image buffer for outline - Devel::PixelBuffer outlineImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_OUTLINE, ignoreHorizontalAlignment, pixelFormat, penX, penY, 0u, numberOfGlyphs - 1); + 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); @@ -558,10 +828,10 @@ PixelData Typesetter::Render(const Vector2& size, Toolkit::DevelText::TextDirect // Generate the shadow if enabled const Vector2& shadowOffset = mModel->GetShadowOffset(); - if(fabsf(shadowOffset.x) > Math::MACHINE_EPSILON_1 || fabsf(shadowOffset.y) > Math::MACHINE_EPSILON_1) + if(RENDER_OVERLAY_STYLE != behaviour && (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, 0u, numberOfGlyphs - 1); + Devel::PixelBuffer shadowImageBuffer = 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(); @@ -577,29 +847,54 @@ PixelData Typesetter::Render(const Vector2& size, Toolkit::DevelText::TextDirect // Generate the underline if enabled const bool underlineEnabled = mModel->IsUnderlineEnabled(); - if(underlineEnabled) + if(underlineEnabled && RENDER_OVERLAY_STYLE == behaviour) { // Create the image buffer for underline - Devel::PixelBuffer underlineImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_UNDERLINE, ignoreHorizontalAlignment, pixelFormat, penX, penY, 0u, numberOfGlyphs - 1); + 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); } // Generate the background if enabled - const bool backgroundEnabled = mModel->IsBackgroundEnabled(); - if(backgroundEnabled) + const bool backgroundEnabled = mModel->IsBackgroundEnabled(); + const bool backgroundMarkupSet = mModel->IsMarkupBackgroundColorSet(); + if((backgroundEnabled || backgroundMarkupSet) && RENDER_OVERLAY_STYLE != behaviour) { - Devel::PixelBuffer backgroundImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_BACKGROUND, ignoreHorizontalAlignment, pixelFormat, penX, penY, 0u, numberOfGlyphs - 1); + Devel::PixelBuffer backgroundImageBuffer; + + if(backgroundEnabled) + { + backgroundImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, Typesetter::STYLE_BACKGROUND, ignoreHorizontalAlignment, pixelFormat, penX, penY, startIndexOfGlyphs, endIndexOfGlyphs); + } + else + { + backgroundImageBuffer = CreateImageBuffer(bufferWidth, bufferHeight, pixelFormat); + } + + if(backgroundMarkupSet) + { + DrawGlyphsBackground(mModel, backgroundImageBuffer, bufferWidth, bufferHeight, ignoreHorizontalAlignment, penX, penY); + } // Combine the two buffers imageBuffer = CombineImageBuffer(imageBuffer, backgroundImageBuffer, bufferWidth, bufferHeight); } + // Generate the strikethrough if enabled + const bool strikethroughEnabled = mModel->IsStrikethroughEnabled(); + if(strikethroughEnabled && RENDER_OVERLAY_STYLE == behaviour) + { + // Create the image buffer for strikethrough + 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); + } + // Markup-Processor imageBuffer = ApplyMarkupProcessorOnPixelBuffer(imageBuffer, bufferWidth, bufferHeight, ignoreHorizontalAlignment, pixelFormat, penX, penY); - } // Create the final PixelData for the combined image buffer @@ -613,7 +908,6 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, // Retrieve lines, glyphs, positions and colors from the view model. const Length modelNumberOfLines = mModel->GetNumberOfLines(); const LineRun* const modelLinesBuffer = mModel->GetLines(); - const Length numberOfGlyphs = mModel->GetNumberOfGlyphs(); const GlyphInfo* const glyphsBuffer = mModel->GetGlyphs(); const Vector2* const positionBuffer = mModel->GetLayout(); const Vector4* const colorsBuffer = mModel->GetColors(); @@ -622,33 +916,35 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, const Length* 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(); + Vector4 currentStrikethroughColor; // Create and initialize the pixel buffer. GlyphData glyphData; glyphData.verticalOffset = verticalOffset; glyphData.width = bufferWidth; glyphData.height = bufferHeight; - glyphData.bitmapBuffer = Devel::PixelBuffer::New(bufferWidth, bufferHeight, pixelFormat); + glyphData.bitmapBuffer = CreateImageBuffer(bufferWidth, bufferHeight, pixelFormat); glyphData.horizontalOffset = 0; - if(Pixel::RGBA8888 == pixelFormat) - { - const unsigned int bufferSizeInt = bufferWidth * bufferHeight; - const unsigned int bufferSizeChar = 4u * bufferSizeInt; - memset(glyphData.bitmapBuffer.GetBuffer(), 0u, bufferSizeChar); - } - else - { - memset(glyphData.bitmapBuffer.GetBuffer(), 0, bufferWidth * bufferHeight); - } - // 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* textBuffer = mModel->GetTextBuffer(); + float calculatedAdvance = 0.f; + const Vector& glyphToCharacterMap = mModel->GetGlyphsToCharacters(); + const CharacterIndex* glyphToCharacterMapBuffer = glyphToCharacterMap.Begin(); + // Traverses the lines of the text. for(LineIndex lineIndex = 0u; lineIndex < modelNumberOfLines; ++lineIndex) { @@ -691,9 +987,16 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, } } - const bool underlineEnabled = mModel->IsUnderlineEnabled(); - const Vector4& underlineColor = mModel->GetUnderlineColor(); - const float underlineHeight = mModel->GetUnderlineHeight(); + const bool underlineEnabled = mModel->IsUnderlineEnabled(); + const Vector4& underlineColor = mModel->GetUnderlineColor(); + const float underlineHeight = mModel->GetUnderlineHeight(); + const Text::Underline::Type underlineType = mModel->GetUnderlineType(); + const float dashedUnderlineWidth = mModel->GetDashedUnderlineWidth(); + const float dashedUnderlineGap = mModel->GetDashedUnderlineGap(); + const bool strikethroughEnabled = mModel->IsStrikethroughEnabled(); + const Vector4& strikethroughColor = mModel->GetStrikethroughColor(); + const float strikethroughHeight = mModel->GetStrikethroughHeight(); + const float characterSpacing = mModel->GetCharacterSpacing(); // Get the underline runs. const Length numberOfUnderlineRuns = mModel->GetNumberOfUnderlineRuns(); @@ -701,11 +1004,21 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, underlineRuns.Resize(numberOfUnderlineRuns); mModel->GetUnderlineRuns(underlineRuns.Begin(), 0u, numberOfUnderlineRuns); + // Get the strikethrough runs. + const Length numberOfStrikethroughRuns = mModel->GetNumberOfStrikethroughRuns(); + Vector strikethroughRuns; + strikethroughRuns.Resize(numberOfStrikethroughRuns); + mModel->GetStrikethroughRuns(strikethroughRuns.Begin(), 0u, numberOfStrikethroughRuns); + bool thereAreUnderlinedGlyphs = false; + bool strikethroughGlyphsExist = false; - float currentUnderlinePosition = 0.0f; - float currentUnderlineThickness = underlineHeight; - float maxUnderlineThickness = currentUnderlineThickness; + float currentUnderlinePosition = 0.0f; + float currentUnderlineThickness = underlineHeight; + float maxUnderlineThickness = currentUnderlineThickness; + float currentStrikethroughThickness = strikethroughHeight; + float maxStrikethroughThickness = currentStrikethroughThickness; + float strikethroughStartingYPosition = 0.0f; FontId lastUnderlinedFontId = 0; @@ -715,8 +1028,11 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, bool addHyphen = false; // 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) + const GlyphIndex startGlyphIndex = std::max(line.glyphRun.glyphIndex, startIndexOfGlyphs); + GlyphIndex endGlyphIndex = (line.isSplitToTwoHalves ? line.glyphRunSecondHalf.glyphIndex + line.glyphRunSecondHalf.numberOfGlyphs : line.glyphRun.glyphIndex + line.glyphRun.numberOfGlyphs) - 1u; + endGlyphIndex = std::min(endGlyphIndex, endIndexOfGlyphs); + + for(GlyphIndex glyphIndex = startGlyphIndex; glyphIndex <= endGlyphIndex; ++glyphIndex) { if(glyphIndex < fromGlyphIndex || glyphIndex > toGlyphIndex) { @@ -724,6 +1040,25 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, 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; + + //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; @@ -734,7 +1069,7 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, } else { - glyphInfo = glyphsBuffer + glyphIndex; + glyphInfo = glyphsBuffer + elidedGlyphIndex; } if((glyphInfo->width < Math::MACHINE_EPSILON_1000) || @@ -747,20 +1082,25 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, const bool underlineGlyph = underlineEnabled || IsGlyphUnderlined(glyphIndex, underlineRuns); thereAreUnderlinedGlyphs = thereAreUnderlinedGlyphs || underlineGlyph; + currentStrikethroughColor = strikethroughColor; + const bool strikethroughGlyph = strikethroughEnabled || doGlyphHaveStrikethrough(glyphIndex, strikethroughRuns, currentStrikethroughColor); + strikethroughGlyphsExist = strikethroughGlyphsExist || strikethroughGlyph; + // Are we still using the same fontId as previous - if(underlineGlyph && (glyphInfo->fontId != lastUnderlinedFontId)) + if((strikethroughGlyph || underlineGlyph) && (glyphInfo->fontId != lastUnderlinedFontId)) { // We need to fetch fresh font underline metrics - FetchFontUnderlineMetrics(fontClient, glyphInfo, currentUnderlinePosition, underlineHeight, currentUnderlineThickness, maxUnderlineThickness, lastUnderlinedFontId); + FetchFontDecorationlinesMetrics(fontClient, glyphInfo, currentUnderlinePosition, underlineHeight, currentUnderlineThickness, maxUnderlineThickness, lastUnderlinedFontId, strikethroughHeight, currentStrikethroughThickness, maxStrikethroughThickness); } // underline // Retrieves the glyph's position. - Vector2 position = *(positionBuffer + glyphIndex); + Vector2 position = *(positionBuffer + elidedGlyphIndex); if(addHyphen) { - GlyphInfo tempInfo = *(glyphsBuffer + glyphIndex); - position.x = position.x + tempInfo.advance - tempInfo.xBearing + glyphInfo->xBearing; + GlyphInfo tempInfo = *(glyphsBuffer + elidedGlyphIndex); + calculatedAdvance = GetCalculatedAdvance(*(textBuffer + (*(glyphToCharacterMapBuffer + elidedGlyphIndex))), characterSpacing, tempInfo.advance); + position.x = position.x + calculatedAdvance - tempInfo.xBearing + glyphInfo->xBearing; position.y = -glyphInfo->yBearing; } @@ -813,7 +1153,7 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, outlineWidth = 0.0f; } - if(style != Typesetter::STYLE_UNDERLINE) + if(style != Typesetter::STYLE_UNDERLINE && style != Typesetter::STYLE_STRIKETHROUGH) { fontClient.CreateBitmap(glyphInfo->fontId, glyphInfo->index, @@ -852,22 +1192,25 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, glyphData.glyphBitmap.buffer = NULL; } - while((hyphenIndex < hyphensCount) && (glyphIndex > hyphenIndices[hyphenIndex])) + if(hyphenIndices) { - hyphenIndex++; - } + while((hyphenIndex < hyphensCount) && (glyphIndex > hyphenIndices[hyphenIndex])) + { + hyphenIndex++; + } - addHyphen = ((hyphenIndex < hyphensCount) && hyphenIndices && ((glyphIndex + 1) == hyphenIndices[hyphenIndex])); - if(addHyphen) - { - glyphIndex--; + 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(underlineColor, bufferWidth, bufferHeight, glyphData, baseline, currentUnderlinePosition, maxUnderlineThickness, lineExtentLeft, lineExtentRight); + DrawUnderline(underlineColor, bufferWidth, bufferHeight, glyphData, baseline, currentUnderlinePosition, maxUnderlineThickness, lineExtentLeft, lineExtentRight, underlineType, dashedUnderlineWidth, dashedUnderlineGap, line); } // Draw the background color from the leftmost glyph to the rightmost glyph @@ -876,6 +1219,14 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, DrawBackgroundColor(mModel->GetBackgroundColor(), bufferWidth, bufferHeight, glyphData, baseline, line, lineExtentLeft, lineExtentRight); } + // Draw the strikethrough from the leftmost glyph to the rightmost glyph + if(strikethroughGlyphsExist && 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(strikethroughColor, bufferWidth, bufferHeight, glyphData, baseline, line, maxStrikethroughThickness, lineExtentLeft, lineExtentRight, strikethroughStartingYPosition); + } + // Increases the vertical offset with the line's descender. glyphData.verticalOffset += static_cast(-line.descender); } @@ -945,46 +1296,86 @@ Devel::PixelBuffer Typesetter::CombineImageBuffer(Devel::PixelBuffer topPixelBuf return combinedPixelBuffer; } -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::ApplyUnderlineMarkupImageBuffer(Devel::PixelBuffer topPixelBuffer, const unsigned int bufferWidth, const unsigned int bufferHeight, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, int horizontalOffset, int verticalOffset) { - // Apply the markup-Processor if enabled - const bool markupProcessorEnabled = mModel->IsMarkupProcessorEnabled(); - if(markupProcessorEnabled) - { - // Underline-tags (this is for Markup case) - // Get the underline runs. - const Length numberOfUnderlineRuns = mModel->GetNumberOfUnderlineRuns(); - Vector underlineRuns; - underlineRuns.Resize(numberOfUnderlineRuns); - mModel->GetUnderlineRuns(underlineRuns.Begin(), 0u, numberOfUnderlineRuns); - - // Iterate on the consecutive underlined glyph run and connect them into one chunk of underlined characters. - Vector::ConstIterator itGlyphRun = underlineRuns.Begin(); - Vector::ConstIterator endItGlyphRun = underlineRuns.End(); - GlyphIndex startGlyphIndex, endGlyphIndex; - - //The outer loop to iterate on the separated chunks of underlined glyph runs - while(itGlyphRun != endItGlyphRun) - { - startGlyphIndex = itGlyphRun->glyphIndex; - endGlyphIndex = startGlyphIndex; - //The inner loop to make a connected underline for the consecutive characters - do - { - endGlyphIndex += itGlyphRun->numberOfGlyphs; - itGlyphRun++; - } while(itGlyphRun != endItGlyphRun && itGlyphRun->glyphIndex == endGlyphIndex); + // Underline-tags (this is for Markup case) + // Get the underline runs. + const Length numberOfUnderlineRuns = mModel->GetNumberOfUnderlineRuns(); + Vector underlineRuns; + underlineRuns.Resize(numberOfUnderlineRuns); + mModel->GetUnderlineRuns(underlineRuns.Begin(), 0u, numberOfUnderlineRuns); + + // Iterate on the consecutive underlined glyph run and connect them into one chunk of underlined characters. + Vector::ConstIterator itGlyphRun = underlineRuns.Begin(); + Vector::ConstIterator endItGlyphRun = underlineRuns.End(); + GlyphIndex startGlyphIndex, endGlyphIndex; + + //The outer loop to iterate on the separated chunks of underlined glyph runs + while(itGlyphRun != endItGlyphRun) + { + startGlyphIndex = itGlyphRun->glyphIndex; + endGlyphIndex = startGlyphIndex; + //The inner loop to make a connected underline for the consecutive characters + do + { + endGlyphIndex += itGlyphRun->numberOfGlyphs; + itGlyphRun++; + } while(itGlyphRun != endItGlyphRun && itGlyphRun->glyphIndex == endGlyphIndex); - endGlyphIndex--; + endGlyphIndex--; - // 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(topPixelBuffer, underlineImageBuffer, bufferWidth, bufferHeight); - } - } + // 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(topPixelBuffer, underlineImageBuffer, bufferWidth, bufferHeight); + } - return topPixelBuffer; + 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) +{ + // strikethrough-tags (this is for Markup case) + // Get the strikethrough runs. + const Length numberOfStrikethroughRuns = mModel->GetNumberOfStrikethroughRuns(); + Vector strikethroughRuns; + strikethroughRuns.Resize(numberOfStrikethroughRuns); + mModel->GetStrikethroughRuns(strikethroughRuns.Begin(), 0u, numberOfStrikethroughRuns); + + // Iterate on the consecutive strikethrough glyph run and connect them into one chunk of strikethrough characters. + Vector::ConstIterator itGlyphRun = strikethroughRuns.Begin(); + Vector::ConstIterator endItGlyphRun = strikethroughRuns.End(); + GlyphIndex startGlyphIndex, endGlyphIndex; + + //The outer loop to iterate on the separated chunks of strikethrough glyph runs + while(itGlyphRun != endItGlyphRun) + { + startGlyphIndex = itGlyphRun->glyphRun.glyphIndex; + 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); + // Combine the two buffers + topPixelBuffer = CombineImageBuffer(strikethroughImageBuffer, topPixelBuffer, bufferWidth, bufferHeight); + + 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) +{ + // Apply the markup-Processor if enabled + const bool markupProcessorEnabled = mModel->IsMarkupProcessorEnabled(); + if(markupProcessorEnabled) + { + topPixelBuffer = ApplyUnderlineMarkupImageBuffer(topPixelBuffer, bufferWidth, bufferHeight, ignoreHorizontalAlignment, pixelFormat, horizontalOffset, verticalOffset); + + topPixelBuffer = ApplyStrikethroughMarkupImageBuffer(topPixelBuffer, bufferWidth, bufferHeight, ignoreHorizontalAlignment, pixelFormat, horizontalOffset, verticalOffset); + } + + return topPixelBuffer; } Typesetter::Typesetter(const ModelInterface* const model)