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=05b4a674e002e8be643db1e0f6e6f31b2a9fd0d2;hp=0256a43e8d3c8b3c9e14ca77f7fb78f758d3ca37;hb=583538010c34b92f80989021201484fdf9e590a9;hpb=177ce5376e3786645b92fccdaed7b904053ef7f6 diff --git a/dali-toolkit/internal/text/rendering/text-typesetter.cpp b/dali-toolkit/internal/text/rendering/text-typesetter.cpp index 0256a43..05b4a67 100755 --- a/dali-toolkit/internal/text/rendering/text-typesetter.cpp +++ b/dali-toolkit/internal/text/rendering/text-typesetter.cpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2019 Samsung Electronics Co., Ltd. + * Copyright (c) 2020 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. @@ -278,6 +278,149 @@ bool IsGlyphUnderlined( GlyphIndex index, return false; } +/// Helper method to fetch the underline metrics for the specified font glyph +void FetchFontUnderlineMetrics( + TextAbstraction::FontClient& fontClient, + const GlyphInfo* const glyphInfo, + float& currentUnderlinePosition, + const float underlineHeight, + float& currentUnderlineThickness, + float& maxUnderlineThickness, + FontId& lastUnderlinedFontId) +{ + 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 ); + } + } + + // The underline thickness should be the max underline thickness of all glyphs of the line. + if ( currentUnderlineThickness > maxUnderlineThickness ) + { + maxUnderlineThickness = currentUnderlineThickness; + } + + // 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; + } + + lastUnderlinedFontId = glyphInfo->fontId; +} + +/// 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( &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 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) +{ + int underlineYOffset = glyphData.verticalOffset + baseline + currentUnderlinePosition; + uint32_t* bitmapBuffer = reinterpret_cast< uint32_t* >( glyphData.bitmapBuffer.GetBuffer() ); + + for( unsigned int y = underlineYOffset; y < underlineYOffset + maxUnderlineThickness; 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, underlineColor, x, y); + } + } +} + +/// 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) +{ + 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++ ) + { + if( ( y < 0 ) || ( y > static_cast(bufferHeight - 1) ) ) + { + // Do not write out of bounds. + continue; + } + + for( int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++ ) + { + if( ( x < 0 ) || ( x > static_cast(bufferWidth - 1) ) ) + { + // Do not write out of bounds. + continue; + } + + WriteColorToPixelBuffer(glyphData, bitmapBuffer, backgroundColor, x, y); + } + } +} + } // namespace TypesetterPtr Typesetter::New( const ModelInterface* const model ) @@ -593,45 +736,7 @@ Devel::PixelBuffer Typesetter::CreateImageBuffer( const unsigned int bufferWidth if( underlineGlyph && ( glyphInfo->fontId != lastUnderlinedFontId ) ) { // We need to fetch fresh font underline metrics - 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 ); - } - } - - // The underline thickness should be the max underline thickness of all glyphs of the line. - if ( currentUnderlineThickness > maxUnderlineThickness ) - { - maxUnderlineThickness = currentUnderlineThickness; - } - - // 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; - } - - lastUnderlinedFontId = glyphInfo->fontId; + FetchFontUnderlineMetrics(fontClient, glyphInfo, currentUnderlinePosition, underlineHeight, currentUnderlineThickness, maxUnderlineThickness, lastUnderlinedFontId); } // underline // Retrieves the glyph's position. @@ -728,77 +833,13 @@ 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 ) { - int underlineYOffset = glyphData.verticalOffset + baseline + currentUnderlinePosition; - - for( unsigned int y = underlineYOffset; y < underlineYOffset + maxUnderlineThickness; 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; - } - - // Always RGBA image for text with styles - uint32_t* bitmapBuffer = reinterpret_cast< uint32_t* >( glyphData.bitmapBuffer.GetBuffer() ); - uint32_t underlinePixel = *( bitmapBuffer + y * glyphData.width + x ); - uint8_t* underlinePixelBuffer = reinterpret_cast( &underlinePixel ); - - // Write the underline color to the pixel buffer - uint8_t colorAlpha = static_cast< uint8_t >( underlineColor.a * 255.f ); - *( underlinePixelBuffer + 3u ) = colorAlpha; - *( underlinePixelBuffer + 2u ) = static_cast< uint8_t >( underlineColor.b * colorAlpha ); - *( underlinePixelBuffer + 1u ) = static_cast< uint8_t >( underlineColor.g * colorAlpha ); - *( underlinePixelBuffer ) = static_cast< uint8_t >( underlineColor.r * colorAlpha ); - - *( bitmapBuffer + y * glyphData.width + x ) = underlinePixel; - } - } + DrawUnderline(underlineColor, bufferWidth, bufferHeight, glyphData, baseline, currentUnderlinePosition, maxUnderlineThickness, lineExtentLeft, lineExtentRight); } // Draw the background color from the leftmost glyph to the rightmost glyph if ( style == Typesetter::STYLE_BACKGROUND ) { - Vector4 backgroundColor = mModel->GetBackgroundColor(); - - for( int y = glyphData.verticalOffset + baseline - line.ascender; y < glyphData.verticalOffset + baseline - line.descender; y++ ) - { - if( ( y < 0 ) || ( y > static_cast(bufferHeight - 1) ) ) - { - // Do not write out of bounds. - continue; - } - - for( int x = glyphData.horizontalOffset + lineExtentLeft; x <= glyphData.horizontalOffset + lineExtentRight; x++ ) - { - if( ( x < 0 ) || ( x > static_cast(bufferWidth - 1) ) ) - { - // Do not write out of bounds. - continue; - } - - // Always RGBA image for text with styles - uint32_t* bitmapBuffer = reinterpret_cast< uint32_t* >( glyphData.bitmapBuffer.GetBuffer() ); - uint32_t backgroundPixel = *( bitmapBuffer + y * glyphData.width + x ); - uint8_t* backgroundPixelBuffer = reinterpret_cast( &backgroundPixel ); - - // Write the background color to the pixel buffer - uint8_t colorAlpha = static_cast< uint8_t >( backgroundColor.a * 255.f ); - *( backgroundPixelBuffer + 3u ) = colorAlpha; - *( backgroundPixelBuffer + 2u ) = static_cast< uint8_t >( backgroundColor.b * colorAlpha ); - *( backgroundPixelBuffer + 1u ) = static_cast< uint8_t >( backgroundColor.g * colorAlpha ); - *( backgroundPixelBuffer ) = static_cast< uint8_t >( backgroundColor.r * colorAlpha ); - - *( bitmapBuffer + y * glyphData.width + x ) = backgroundPixel; - } - } + DrawBackgroundColor(mModel->GetBackgroundColor(), bufferWidth, bufferHeight, glyphData, baseline, line, lineExtentLeft, lineExtentRight); } // Increases the vertical offset with the line's descender.