{
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.
*/
}
/// 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);
}
}
+ 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 = 1.0f;
}
- lastUnderlinedFontId = glyphInfo->fontId;
+ lastlinedFontId = glyphInfo->fontId;
}
/// Draws the specified color to the pixel buffer
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<uint32_t*>(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)
// Generate the image buffer as an alpha mask for color glyphs.
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);
{
// 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, startIndexOfGlyphs, endIndexOfGlyphs);
// 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, startIndexOfGlyphs, endIndexOfGlyphs);
// 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, startIndexOfGlyphs, endIndexOfGlyphs);
// Generate the background if enabled
const bool backgroundEnabled = mModel->IsBackgroundEnabled();
const bool backgroundMarkupSet = mModel->IsMarkupBackgroundColorSet();
- if(backgroundEnabled || backgroundMarkupSet)
+ if((backgroundEnabled || backgroundMarkupSet) && RENDER_OVERLAY_STYLE != behaviour)
{
Devel::PixelBuffer backgroundImageBuffer;
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);
const Vector4& underlineColor = mModel->GetUnderlineColor();
const float underlineHeight = mModel->GetUnderlineHeight();
+ const bool strikethroughEnabled = mModel->IsStrikethroughEnabled();
+ const Vector4& strikethroughColor = mModel->GetStrikethroughColor();
+ const float strikethroughHeight = mModel->GetStrikethroughHeight();
+
// Get the underline runs.
const Length numberOfUnderlineRuns = mModel->GetNumberOfUnderlineRuns();
Vector<GlyphRun> underlineRuns;
mModel->GetUnderlineRuns(underlineRuns.Begin(), 0u, numberOfUnderlineRuns);
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;
const bool underlineGlyph = underlineEnabled || IsGlyphUnderlined(glyphIndex, underlineRuns);
thereAreUnderlinedGlyphs = thereAreUnderlinedGlyphs || underlineGlyph;
+ strikethroughGlyphsExist = strikethroughGlyphsExist || strikethroughEnabled;
+
// Are we still using the same fontId as previous
- if(underlineGlyph && (glyphInfo->fontId != lastUnderlinedFontId))
+ if((strikethroughEnabled || 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.
outlineWidth = 0.0f;
}
- if(style != Typesetter::STYLE_UNDERLINE)
+ if(style != Typesetter::STYLE_UNDERLINE && style != Typesetter::STYLE_STRIKETHROUGH)
{
fontClient.CreateBitmap(glyphInfo->fontId,
glyphInfo->index,
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<int>(-line.descender);
}
projects / platform / core / uifw / dali-toolkit.git / blobdiff