- // Generate the image buffers of the text for each different style first,
- // then combine all of them together as one final image buffer. We try to
- // 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 unsigned int bufferSizeInt = bufferWidth * bufferHeight;
- const unsigned int bufferSizeChar = 4u * bufferSizeInt;
-
- Length numberOfGlyphs = mModel->GetNumberOfGlyphs();
-
- 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, penY, 0u, numberOfGlyphs - 1 );
- }
- else if( RENDER_NO_TEXT == 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 );
- memset( imageBuffer.GetBuffer(), 0u, bufferSizeChar );
- }
- else
- {
- // Generate the image buffer for the text with no style.
- imageBuffer = CreateImageBuffer( bufferWidth, bufferHeight, Typesetter::STYLE_NONE, ignoreHorizontalAlignment, pixelFormat, penY, 0u, numberOfGlyphs -1 );
- }
-
- if ( ( RENDER_NO_STYLES != behaviour ) && ( RENDER_MASK != behaviour ) )
- {
- // @todo. Support shadow and underline for partial text later on.
-
- // 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 )
- {
- // Create the image buffer for shadow
- Devel::PixelBuffer shadowImageBuffer = CreateImageBuffer( bufferWidth, bufferHeight, Typesetter::STYLE_SHADOW, ignoreHorizontalAlignment, pixelFormat, penY, 0u, numberOfGlyphs - 1 );
-
- // Combine the two buffers
- imageBuffer = CombineImageBuffer( imageBuffer, shadowImageBuffer, bufferWidth, bufferHeight );
- }
-
- // Generate the underline if enabled
- const bool underlineEnabled = mModel->IsUnderlineEnabled();
- if ( underlineEnabled )
- {
- // Create the image buffer for underline
- Devel::PixelBuffer underlineImageBuffer = CreateImageBuffer( bufferWidth, bufferHeight, Typesetter::STYLE_UNDERLINE, ignoreHorizontalAlignment, pixelFormat, penY, 0u, numberOfGlyphs - 1 );
-
- // Combine the two buffers
- imageBuffer = CombineImageBuffer( imageBuffer, underlineImageBuffer, bufferWidth, bufferHeight );
- }
- }
-
- // Create the final PixelData for the combined image buffer
- PixelData pixelData = Devel::PixelBuffer::Convert( imageBuffer );
-
- return pixelData;
-}
-
-Devel::PixelBuffer Typesetter::CreateImageBuffer( const unsigned int bufferWidth, const unsigned int bufferHeight, Typesetter::Style style, bool ignoreHorizontalAlignment, Pixel::Format pixelFormat, int verticalOffset, GlyphIndex fromGlyphIndex, GlyphIndex toGlyphIndex )
-{
projects / platform / core / uifw / dali-toolkit.git / commitdiff