// EXTERNAL INCLUDES
#include <dali/public-api/math/vector2.h>
+#include <dali/devel-api/text-abstraction/font-client.h>
namespace Dali
{
struct View::Impl
{
VisualModelPtr mVisualModel;
+ TextAbstraction::FontClient mFontClient; ///< Handle to the font client.
};
View::View()
: mImpl( NULL )
{
mImpl = new View::Impl();
+
+ mImpl->mFontClient = TextAbstraction::FontClient::Get();
}
View::~View()
mImpl->mVisualModel = visualModel;
}
-Length View::GetNumberOfGlyphs() const
+Length View::GetGlyphs( GlyphInfo* glyphs,
+ Vector2* glyphPositions,
+ GlyphIndex glyphIndex,
+ Length numberOfGlyphs ) const
{
+ Length numberOfLaidOutGlyphs = 0u;
+
if( mImpl->mVisualModel )
{
- return mImpl->mVisualModel->GetNumberOfGlyphs();
+ // If ellipsis is enabled, the number of glyphs the layout engine has laid out may be less than 'numberOfGlyphs'.
+ // Check the last laid out line to know if the layout engine elided some text.
+
+ const Length numberOfLines = mImpl->mVisualModel->GetNumberOfLines();
+ if( numberOfLines > 0u )
+ {
+ const LineRun& lastLine = *( mImpl->mVisualModel->mLines.Begin() + ( numberOfLines - 1u ) );
+
+ // If ellipsis is enabled, calculate the number of laid out glyphs.
+ // Otherwise use the given number of glyphs.
+ if( lastLine.ellipsis )
+ {
+ numberOfLaidOutGlyphs = lastLine.glyphIndex + lastLine.numberOfGlyphs;
+ }
+ else
+ {
+ numberOfLaidOutGlyphs = numberOfGlyphs;
+ }
+
+ // Retrieve from the visual model the glyphs and positions.
+ mImpl->mVisualModel->GetGlyphs( glyphs,
+ glyphIndex,
+ numberOfLaidOutGlyphs );
+
+ mImpl->mVisualModel->GetGlyphPositions( glyphPositions,
+ glyphIndex,
+ numberOfLaidOutGlyphs );
+
+ // Get the lines for the given range of glyphs.
+ // The lines contain the alignment offset which needs to be added to the glyph's position.
+ LineIndex firstLine = 0u;
+ Length numberOfLines = 0u;
+ mImpl->mVisualModel->GetNumberOfLines( glyphIndex,
+ numberOfLaidOutGlyphs,
+ firstLine,
+ numberOfLines );
+
+ Vector<LineRun> lines;
+ lines.Resize( numberOfLines );
+ LineRun* lineBuffer = lines.Begin();
+
+ mImpl->mVisualModel->GetLinesOfGlyphRange( lineBuffer,
+ glyphIndex,
+ numberOfLaidOutGlyphs );
+
+ // Get the first line for the given glyph range.
+ LineIndex lineIndex = firstLine;
+ LineRun* line = lineBuffer + lineIndex;
+
+ // Index of the last glyph of the line.
+ GlyphIndex lastGlyphIndexOfLine = line->glyphIndex + line->numberOfGlyphs - 1u;
+
+ // Add the alignment offset to the glyph's position.
+ for( Length index = 0u; index < numberOfLaidOutGlyphs; ++index )
+ {
+ ( *( glyphPositions + index ) ).x += line->alignmentOffset;
+
+ if( lastGlyphIndexOfLine == index )
+ {
+ // Get the next line.
+ ++lineIndex;
+
+ if( lineIndex < numberOfLines )
+ {
+ line = lineBuffer + lineIndex;
+ lastGlyphIndexOfLine = line->glyphIndex + line->numberOfGlyphs - 1u;
+ }
+ }
+ }
+
+ if( 1u == numberOfLaidOutGlyphs )
+ {
+ // not a point try to do ellipsis with only one laid out character.
+ return numberOfLaidOutGlyphs;
+ }
+
+ if( lastLine.ellipsis )
+ {
+ // firstPenX, penY and firstPenSet are used to position the ellipsis glyph if needed.
+ float firstPenX = 0.f; // Used if rtl text is elided.
+ float penY = 0.f;
+ bool firstPenSet = false;
+
+ // Add the ellipsis glyph.
+ bool inserted = false;
+ float removedGlypsWidth = 0.f;
+ Length numberOfRemovedGlyphs = 0u;
+ GlyphIndex index = numberOfLaidOutGlyphs - 1u;
+
+ // The ellipsis glyph has to fit in the place where the last glyph(s) is(are) removed.
+ while( !inserted )
+ {
+ const GlyphInfo& glyphToRemove = *( glyphs + index );
+
+ if( 0u != glyphToRemove.fontId )
+ {
+ // i.e. The font id of the glyph shaped from the '\n' character is zero.
+
+ // Need to reshape the glyph as the font may be different in size.
+ const GlyphInfo& ellipsisGlyph = mImpl->mFontClient.GetEllipsisGlyph( mImpl->mFontClient.GetPointSize( glyphToRemove.fontId ) );
+
+ if( !firstPenSet )
+ {
+ const Vector2& position = *( glyphPositions + index );
+
+ // Calculates the penY of the current line. It will be used to position the ellipsis glyph.
+ penY = position.y + glyphToRemove.yBearing;
+
+ // Calculates the first penX which will be used if rtl text is elided.
+ firstPenX = position.x - glyphToRemove.xBearing;
+ if( firstPenX < -ellipsisGlyph.xBearing )
+ {
+ // Avoids to exceed the bounding box when rtl text is elided.
+ firstPenX = -ellipsisGlyph.xBearing;
+ }
+
+ removedGlypsWidth = -ellipsisGlyph.xBearing;
+
+ firstPenSet = true;
+ }
+
+ removedGlypsWidth += std::min( glyphToRemove.advance, ( glyphToRemove.xBearing + glyphToRemove.width ) );
+
+ // Calculate the width of the ellipsis glyph and check if it fits.
+ const float ellipsisGlyphWidth = ellipsisGlyph.width + ellipsisGlyph.xBearing;
+ if( ellipsisGlyphWidth < removedGlypsWidth )
+ {
+ GlyphInfo& glyphInfo = *( glyphs + index );
+ Vector2& position = *( glyphPositions + index );
+ position.x -= glyphInfo.xBearing;
+
+ // Replace the glyph by the ellipsis glyph.
+ glyphInfo = ellipsisGlyph;
+
+ // Change the 'x' and 'y' position of the ellipsis glyph.
+
+ if( position.x > firstPenX )
+ {
+ position.x = firstPenX + removedGlypsWidth - ellipsisGlyphWidth;
+ }
+
+ position.x += ellipsisGlyph.xBearing;
+ position.y = penY - ellipsisGlyph.yBearing;
+
+ inserted = true;
+ }
+ }
+
+ if( !inserted )
+ {
+ if( index > 0u )
+ {
+ --index;
+ }
+ else
+ {
+ // No space for the ellipsis.
+ inserted = true;
+ }
+ ++numberOfRemovedGlyphs;
+ }
+ }
+
+ // 'Removes' all the glyphs after the ellipsis glyph.
+ numberOfLaidOutGlyphs -= numberOfRemovedGlyphs;
+ }
+ }
+ }
+
+ return numberOfLaidOutGlyphs;
+}
+
+const Vector4& View::GetTextColor() const
+{
+ if ( mImpl->mVisualModel )
+ {
+ VisualModel& model = *mImpl->mVisualModel;
+ return model.GetTextColor();
}
+ return Vector4::ZERO;
+}
- return 0;
+const Vector2& View::GetShadowOffset() const
+{
+ if ( mImpl->mVisualModel )
+ {
+ VisualModel& model = *mImpl->mVisualModel;
+ return model.GetShadowOffset();
+ }
+ return Vector2::ZERO;
}
-void View::GetGlyphs( GlyphInfo* glyphs,
- GlyphIndex glyphIndex,
- Length numberOfGlyphs ) const
+const Vector4& View::GetShadowColor() const
{
- if( mImpl->mVisualModel )
+ if ( mImpl->mVisualModel )
+ {
+ VisualModel& model = *mImpl->mVisualModel;
+ return model.GetShadowColor();
+ }
+ return Vector4::ZERO;
+}
+
+const Vector4& View::GetUnderlineColor() const
+{
+ if ( mImpl->mVisualModel )
{
- mImpl->mVisualModel->GetGlyphs( glyphs, glyphIndex, numberOfGlyphs );
+ VisualModel& model = *mImpl->mVisualModel;
+ return model.GetUnderlineColor();
}
+ return Vector4::ZERO;
}
-void View::GetGlyphPositions( Vector2* glyphPositions,
- GlyphIndex glyphIndex,
- Length numberOfGlyphs ) const
+bool View::IsUnderlineEnabled() const
+{
+ if ( mImpl->mVisualModel )
+ {
+ VisualModel& model = *mImpl->mVisualModel;
+ return model.IsUnderlineEnabled();
+ }
+ return false;
+}
+
+float View::GetUnderlineHeight() const
+{
+ if ( mImpl->mVisualModel )
+ {
+ VisualModel& model = *mImpl->mVisualModel;
+ return model.GetUnderlineHeight();
+ }
+ return 0.0f;
+}
+
+Length View::GetNumberOfGlyphs() const
{
if( mImpl->mVisualModel )
{
- mImpl->mVisualModel->GetGlyphPositions( glyphPositions, glyphIndex, numberOfGlyphs );
+ VisualModel& model = *mImpl->mVisualModel;
+
+ Length glyphCount = model.GetNumberOfGlyphs();
+ Length positionCount = model.GetNumberOfGlyphPositions();
+
+ DALI_ASSERT_DEBUG( positionCount <= glyphCount && "Invalid glyph positions in Model" );
+
+ return (positionCount < glyphCount) ? positionCount : glyphCount;
}
+
+ return 0;
}
} // namespace Text
projects / platform / core / uifw / dali-toolkit.git / blobdiff