/*
- * 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.
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<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 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<int>(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<int>(bufferWidth - 1) ) )
+ {
+ // Do not write out of bounds.
+ continue;
+ }
+
+ WriteColorToPixelBuffer(glyphData, bitmapBuffer, backgroundColor, x, y);
+ }
+ }
+}
+
} // namespace
TypesetterPtr Typesetter::New( const ModelInterface* const model )
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.
// 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<uint8_t*>( &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<int>(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<int>(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<uint8_t*>( &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.
projects / platform / core / uifw / dali-toolkit.git / blobdiff