X-Git-Url: http://review.tizen.org/git/?p=platform%2Fcore%2Fuifw%2Fdali-toolkit.git;a=blobdiff_plain;f=dali-toolkit%2Finternal%2Ftext%2Frendering%2Ftext-typesetter.cpp;h=9d58934be6e4ba0efdf460b434b89a5e41d94e8b;hp=2e01c18cb64d49bf2d2fd003532e2914b5d9cc82;hb=e770d32b7703435f37ec18ceadf76df623355c24;hpb=e2d9cf42df969e809a572a5224d1ce5d19aaa1ca diff --git a/dali-toolkit/internal/text/rendering/text-typesetter.cpp b/dali-toolkit/internal/text/rendering/text-typesetter.cpp index 2e01c18..9d58934 100644 --- a/dali-toolkit/internal/text/rendering/text-typesetter.cpp +++ b/dali-toolkit/internal/text/rendering/text-typesetter.cpp @@ -26,6 +26,8 @@ // INTERNAL INCLUDES #include #include +#include +#include #include namespace Dali @@ -37,6 +39,7 @@ namespace Text namespace { const float HALF(0.5f); +const float ONE_AND_A_HALF(1.5f); /** * @brief Data struct used to set the buffer of the glyph's bitmap into the final bitmap's buffer. */ @@ -257,123 +260,6 @@ void TypesetGlyph(GlyphData& data, } } -bool IsGlyphUnderlined(GlyphIndex index, - const Vector& underlineRuns) -{ - for(Vector::ConstIterator it = underlineRuns.Begin(), - endIt = underlineRuns.End(); - it != endIt; - ++it) - { - const GlyphRun& run = *it; - - if((run.glyphIndex <= index) && (index < run.glyphIndex + run.numberOfGlyphs)) - { - return true; - } - } - - 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 FetchFontDecorationlinesMetrics( - TextAbstraction::FontClient& fontClient, - const GlyphInfo* const glyphInfo, - float& currentUnderlinePosition, - const float underlineHeight, - float& currentUnderlineThickness, - float& maxUnderlineThickness, - FontId& lastlinedFontId, - const float strikethroughHeight, - float& currentStrikethroughThickness, - float& maxStrikethroughThickness) -{ - FontMetrics fontMetrics; - fontClient.GetFontMetrics(glyphInfo->fontId, fontMetrics); - currentUnderlinePosition = ceil(fabsf(fontMetrics.underlinePosition)); - const float descender = ceil(fabsf(fontMetrics.descender)); - - if(fabsf(underlineHeight) < Math::MACHINE_EPSILON_1000) - { - currentUnderlineThickness = fontMetrics.underlineThickness; - - // Ensure underline will be at least a pixel high - if(currentUnderlineThickness < 1.0f) - { - currentUnderlineThickness = 1.0f; - } - else - { - currentUnderlineThickness = ceil(currentUnderlineThickness); - } - } - - 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) - { - currentUnderlinePosition = descender; - } - - if(fabsf(currentUnderlinePosition) < Math::MACHINE_EPSILON_1000) - { - // Move offset down by one ( EFL behavior ) - currentUnderlinePosition = 1.0f; - } - - lastlinedFontId = glyphInfo->fontId; -} - /// Draws the specified color to the pixel buffer void WriteColorToPixelBuffer( GlyphData& glyphData, @@ -398,24 +284,27 @@ 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 Text::Underline::Type underlineType, - const float dashedUnderlineWidth, - const float dashedUnderlineGap, - const LineRun& line) + const unsigned int bufferWidth, + const unsigned int 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; + int underlineYOffset = glyphData.verticalOffset + baseline + currentUnderlinePosition; uint32_t* bitmapBuffer = reinterpret_cast(glyphData.bitmapBuffer.GetBuffer()); - for(unsigned int y = underlineYOffset; y < underlineYOffset + maxUnderlineThickness; y++) + for(unsigned int y = underlineYOffset; y < underlineYOffset + maxUnderlineHeight; y++) { if(y > bufferHeight - 1) { @@ -466,8 +355,8 @@ void DrawUnderline( } if(underlineType == Text::Underline::DOUBLE) { - int secondUnderlineYOffset = glyphData.verticalOffset - line.descender - maxUnderlineThickness; - for(unsigned int y = secondUnderlineYOffset; y < secondUnderlineYOffset + maxUnderlineThickness; y++) + int secondUnderlineYOffset = underlineYOffset - ONE_AND_A_HALF * maxUnderlineHeight; + for(unsigned int y = secondUnderlineYOffset; y < secondUnderlineYOffset + maxUnderlineHeight; y++) { if(y > bufferHeight - 1) { @@ -632,21 +521,23 @@ Devel::PixelBuffer DrawGlyphsBackground(const ViewModel* model, Devel::PixelBuff } /// 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) +void DrawStrikethrough(const unsigned int bufferWidth, + const unsigned int 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; + uint32_t* bitmapBuffer = reinterpret_cast(glyphData.bitmapBuffer.GetBuffer()); - for(unsigned int y = strikethroughStartingYPosition; y < strikethroughStartingYPosition + maxStrikethroughThickness; y++) + for(unsigned int y = strikethroughStartingYPosition; y < strikethroughStartingYPosition + maxStrikethroughHeight; y++) { if(y > bufferHeight - 1) { @@ -926,7 +817,6 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, // 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; @@ -987,20 +877,31 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, } } - 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(); + const bool underlineEnabled = mModel->IsUnderlineEnabled(); + const bool strikethroughEnabled = mModel->IsStrikethroughEnabled(); + const float characterSpacing = mModel->GetCharacterSpacing(); + + // 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 underlineRuns; + const Length numberOfUnderlineRuns = mModel->GetNumberOfUnderlineRuns(); + Vector underlineRuns; underlineRuns.Resize(numberOfUnderlineRuns); mModel->GetUnderlineRuns(underlineRuns.Begin(), 0u, numberOfUnderlineRuns); @@ -1010,17 +911,20 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, strikethroughRuns.Resize(numberOfStrikethroughRuns); mModel->GetStrikethroughRuns(strikethroughRuns.Begin(), 0u, numberOfStrikethroughRuns); - bool thereAreUnderlinedGlyphs = false; - bool strikethroughGlyphsExist = false; + bool thereAreUnderlinedGlyphs = false; + bool thereAreStrikethroughGlyphs = false; - float currentUnderlinePosition = 0.0f; - float currentUnderlineThickness = underlineHeight; - float maxUnderlineThickness = currentUnderlineThickness; - float currentStrikethroughThickness = strikethroughHeight; - float maxStrikethroughThickness = currentStrikethroughThickness; + 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 lastUnderlinedFontId = 0; + FontId lastFontId = 0; float lineExtentLeft = bufferWidth; float lineExtentRight = 0.0f; @@ -1079,19 +983,41 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, continue; } - const bool underlineGlyph = underlineEnabled || IsGlyphUnderlined(glyphIndex, underlineRuns); - thereAreUnderlinedGlyphs = thereAreUnderlinedGlyphs || underlineGlyph; + Vector::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; - currentStrikethroughColor = strikethroughColor; - const bool strikethroughGlyph = strikethroughEnabled || doGlyphHaveStrikethrough(glyphIndex, strikethroughRuns, currentStrikethroughColor); - strikethroughGlyphsExist = strikethroughGlyphsExist || strikethroughGlyph; + Vector::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((strikethroughGlyph || underlineGlyph) && (glyphInfo->fontId != lastUnderlinedFontId)) + if((glyphInfo->fontId != lastFontId) && (strikethroughGlyph || underlineGlyph)) { // We need to fetch fresh font underline metrics - FetchFontDecorationlinesMetrics(fontClient, glyphInfo, currentUnderlinePosition, underlineHeight, currentUnderlineThickness, maxUnderlineThickness, lastUnderlinedFontId, strikethroughHeight, currentStrikethroughThickness, maxStrikethroughThickness); - } // underline + 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); @@ -1210,7 +1136,7 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, // 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, underlineType, dashedUnderlineWidth, dashedUnderlineGap, line); + DrawUnderline(bufferWidth, bufferHeight, glyphData, baseline, currentUnderlinePosition, maxUnderlineHeight, lineExtentLeft, lineExtentRight, modelUnderlineProperties, currentUnderlineProperties, line); } // Draw the background color from the leftmost glyph to the rightmost glyph @@ -1220,11 +1146,11 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer(const unsigned int bufferWidth, } // Draw the strikethrough from the leftmost glyph to the rightmost glyph - if(strikethroughGlyphsExist && style == Typesetter::STYLE_STRIKETHROUGH) + 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(strikethroughColor, bufferWidth, bufferHeight, glyphData, baseline, line, maxStrikethroughThickness, lineExtentLeft, lineExtentRight, strikethroughStartingYPosition); + DrawStrikethrough(bufferWidth, bufferHeight, glyphData, baseline, strikethroughStartingYPosition, maxStrikethroughHeight, lineExtentLeft, lineExtentRight, modelStrikethroughProperties, currentStrikethroughProperties, line); } // Increases the vertical offset with the line's descender. @@ -1300,34 +1226,28 @@ Devel::PixelBuffer Typesetter::ApplyUnderlineMarkupImageBuffer(Devel::PixelBuffe { // Underline-tags (this is for Markup case) // Get the underline runs. - const Length numberOfUnderlineRuns = mModel->GetNumberOfUnderlineRuns(); - Vector underlineRuns; + 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; + 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--; + startGlyphIndex = itGlyphRun->glyphRun.glyphIndex; + 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); // Combine the two buffers - topPixelBuffer = CombineImageBuffer(topPixelBuffer, underlineImageBuffer, bufferWidth, bufferHeight); + topPixelBuffer = CombineImageBuffer(underlineImageBuffer, topPixelBuffer, bufferWidth, bufferHeight); + + itGlyphRun++; } return topPixelBuffer;