// EXTERNAL INCLUDES
#include <dali/devel-api/text-abstraction/font-client.h>
#include <dali/public-api/math/vector2.h>
+#include <memory.h>
namespace Dali
{
GlyphIndex glyphIndex,
Length numberOfGlyphs) const
{
- Length numberOfLaidOutGlyphs = 0u;
+ Length numberOfLaidOutGlyphs = 0u;
+ Length numberOfActualLaidOutGlyphs = 0u;
if(mImpl->mVisualModel)
{
+ bool textElided = false;
+ DevelText::EllipsisPosition::Type ellipsisPosition = GetEllipsisPosition();
+
+ //Reset indices of ElidedGlyphs
+ mImpl->mVisualModel->SetStartIndexOfElidedGlyphs(0u);
+ mImpl->mVisualModel->SetEndIndexOfElidedGlyphs(numberOfGlyphs);
+ mImpl->mVisualModel->SetFirstMiddleIndexOfElidedGlyphs(0u);
+ mImpl->mVisualModel->SetSecondMiddleIndexOfElidedGlyphs(0u);
+
// 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->mLines.Count();
if(numberOfLines > 0u)
{
- const LineRun& lastLine = *(mImpl->mVisualModel->mLines.Begin() + (numberOfLines - 1u));
+ const LineRun* const lines = mImpl->mVisualModel->mLines.Begin();
+
+ //Get line of ellipsis
+ const LineRun* ellipsisLine = nullptr;
+ const LineRun* ellipsisNextLine = nullptr;
+ bool hasEllipsis = false;
+ for(Length lineIndex = 0; lineIndex < numberOfLines; lineIndex++)
+ {
+ const LineRun* line = (lines + lineIndex);
+ if(line->ellipsis)
+ {
+ ellipsisLine = line;
+ hasEllipsis = true;
+ if(lineIndex < numberOfLines - 1u)
+ {
+ ellipsisNextLine = (lines + lineIndex + 1u);
+ }
+ break;
+ }
+ }
// If ellipsis is enabled, calculate the number of laid out glyphs.
// Otherwise use the given number of glyphs.
- if(lastLine.ellipsis)
+ if(hasEllipsis)
{
- numberOfLaidOutGlyphs = lastLine.glyphRun.glyphIndex + lastLine.glyphRun.numberOfGlyphs;
+ textElided = true;
+ numberOfLaidOutGlyphs = numberOfGlyphs;
+
+ if(ellipsisPosition == DevelText::EllipsisPosition::START)
+ {
+ numberOfActualLaidOutGlyphs = numberOfGlyphs - ellipsisLine->glyphRun.glyphIndex;
+ }
+ else if(ellipsisPosition == DevelText::EllipsisPosition::MIDDLE)
+ {
+ numberOfActualLaidOutGlyphs = 0u;
+ for(Length lineIndex = 0u; lineIndex < numberOfLines; lineIndex++)
+ {
+ numberOfActualLaidOutGlyphs += lines[lineIndex].glyphRun.numberOfGlyphs + lines[lineIndex].glyphRunSecondHalf.numberOfGlyphs;
+ }
+ }
+ else // DevelText::EllipsisPosition::END
+ {
+ numberOfActualLaidOutGlyphs = ellipsisLine->glyphRun.glyphIndex + ellipsisLine->glyphRun.numberOfGlyphs;
+ }
}
else
{
- numberOfLaidOutGlyphs = numberOfGlyphs;
+ numberOfActualLaidOutGlyphs = numberOfLaidOutGlyphs = numberOfGlyphs;
}
- if(0u < numberOfLaidOutGlyphs)
+ if(0u < numberOfActualLaidOutGlyphs)
{
// Retrieve from the visual model the glyphs and positions.
mImpl->mVisualModel->GetGlyphs(glyphs,
// 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;
+ LineIndex firstLineIndex = 0u;
+ Length numberOfLines = 0u;
mImpl->mVisualModel->GetNumberOfLines(glyphIndex,
numberOfLaidOutGlyphs,
- firstLine,
+ firstLineIndex,
numberOfLines);
Vector<LineRun> lines;
numberOfLaidOutGlyphs);
// Get the first line for the given glyph range.
- LineIndex lineIndex = firstLine;
+ LineIndex lineIndex = firstLineIndex;
LineRun* line = lineBuffer + lineIndex;
// Index of the last glyph of the line.
- GlyphIndex lastGlyphIndexOfLine = line->glyphRun.glyphIndex + line->glyphRun.numberOfGlyphs - 1u;
+ GlyphIndex lastGlyphIndexOfLine = (line->isSplitToTwoHalves ? line->glyphRunSecondHalf.glyphIndex + line->glyphRunSecondHalf.numberOfGlyphs : line->glyphRun.glyphIndex + line->glyphRun.numberOfGlyphs) - 1u;
// Add the alignment offset to the glyph's position.
line = lineBuffer + lineIndex;
minLineOffset = std::min(minLineOffset, line->alignmentOffset);
- lastGlyphIndexOfLine = line->glyphRun.glyphIndex + line->glyphRun.numberOfGlyphs - 1u;
+ lastGlyphIndexOfLine = (line->isSplitToTwoHalves ? line->glyphRunSecondHalf.glyphIndex + line->glyphRunSecondHalf.numberOfGlyphs : line->glyphRun.glyphIndex + line->glyphRun.numberOfGlyphs) - 1u;
- penY += line->ascender;
+ penY += line->ascender + line->lineSpacing;
}
}
}
+ // Set index where to set Ellipsis according to the selected position of Ellipsis.
+ // Start with this index to replace its glyph by Ellipsis, if the width is not enough, then remove more glyphs.
+ GlyphIndex startIndexOfEllipsis = 0u;
+ if(hasEllipsis)
+ {
+ if(ellipsisPosition == DevelText::EllipsisPosition::START)
+ {
+ // It's the fisrt glyph in line.
+ startIndexOfEllipsis = ellipsisLine->glyphRun.glyphIndex;
+ }
+ else if(ellipsisPosition == DevelText::EllipsisPosition::MIDDLE)
+ {
+ // It's the second middle of the line in case the line split to two halves.
+ // Otherwise it's It's the last glyph in line (line before all removed lines).
+ startIndexOfEllipsis = ellipsisLine->isSplitToTwoHalves ? (ellipsisLine->glyphRunSecondHalf.glyphIndex) : (ellipsisLine->glyphRun.glyphIndex + ellipsisLine->glyphRun.numberOfGlyphs - 1u);
+ }
+ else // DevelText::EllipsisPosition::END
+ {
+ // It's the last glyph in line.
+ startIndexOfEllipsis = ellipsisLine->glyphRun.glyphIndex + ellipsisLine->glyphRun.numberOfGlyphs - 1u;
+ }
+ }
+
if(1u == numberOfLaidOutGlyphs)
{
// not a point try to do ellipsis with only one laid out character.
+
return numberOfLaidOutGlyphs;
}
- if(lastLine.ellipsis)
+ if(textElided)
{
+ const LineRun& elidedLine = *ellipsisLine;
+
if((1u == numberOfLines) &&
- (lastLine.ascender - lastLine.descender > mImpl->mVisualModel->mControlSize.height))
+ (GetLineHeight(elidedLine) > mImpl->mVisualModel->mControlSize.height))
{
+ // Replace the first glyph with ellipsis glyph
+ auto indexOfFirstGlyph = (ellipsisPosition == DevelText::EllipsisPosition::START) ? startIndexOfEllipsis : 0u;
+
+ // Regardless where the location of ellipsis,in-case the hight of line is greater than control's height
+ // then replace the first glyph with ellipsis glyph.
+
// Get the first glyph which is going to be replaced and the ellipsis glyph.
- GlyphInfo& glyphInfo = *glyphs;
+ GlyphInfo& glyphInfo = *(glyphs + indexOfFirstGlyph);
const GlyphInfo& ellipsisGlyph = mImpl->mFontClient.GetEllipsisGlyph(mImpl->mFontClient.GetPointSize(glyphInfo.fontId));
// Change the 'x' and 'y' position of the ellipsis glyph.
- Vector2& position = *glyphPositions;
+ Vector2& position = *(glyphPositions + indexOfFirstGlyph);
position.x = ellipsisGlyph.xBearing;
position.y = mImpl->mVisualModel->mControlSize.height - ellipsisGlyph.yBearing;
// Replace the glyph by the ellipsis glyph.
glyphInfo = ellipsisGlyph;
- return 1u;
+ mImpl->mVisualModel->SetStartIndexOfElidedGlyphs(indexOfFirstGlyph);
+ mImpl->mVisualModel->SetEndIndexOfElidedGlyphs(indexOfFirstGlyph);
+ mImpl->mVisualModel->SetFirstMiddleIndexOfElidedGlyphs(indexOfFirstGlyph);
+ mImpl->mVisualModel->SetSecondMiddleIndexOfElidedGlyphs(indexOfFirstGlyph);
+
+ numberOfLaidOutGlyphs = 1u;
+
+ return numberOfLaidOutGlyphs;
}
// firstPenX, penY and firstPenSet are used to position the ellipsis glyph if needed.
bool inserted = false;
float removedGlypsWidth = 0.f;
Length numberOfRemovedGlyphs = 0u;
- GlyphIndex index = numberOfLaidOutGlyphs - 1u;
+ GlyphIndex indexOfEllipsis = startIndexOfEllipsis;
+
+ // Tail Mode: start by the end of line.
+ const bool isTailMode = ellipsisPosition == DevelText::EllipsisPosition::END ||
+ (ellipsisPosition == DevelText::EllipsisPosition::MIDDLE && numberOfLines != 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);
+ const GlyphInfo& glyphToRemove = *(glyphs + indexOfEllipsis);
if(0u != glyphToRemove.fontId)
{
if(!firstPenSet)
{
- const Vector2& position = *(glyphPositions + index);
+ const Vector2& position = *(glyphPositions + indexOfEllipsis);
// Calculates the penY of the current line. It will be used to position the ellipsis glyph.
penY = position.y + glyphToRemove.yBearing;
// Calculate the width of the ellipsis glyph and check if it fits.
const float ellipsisGlyphWidth = ellipsisGlyph.width + ellipsisGlyph.xBearing;
- if(ellipsisGlyphWidth < removedGlypsWidth)
+ if((ellipsisGlyphWidth < removedGlypsWidth) || (isTailMode ? (indexOfEllipsis == 0u) : (indexOfEllipsis == numberOfGlyphs - 1u)))
{
- GlyphInfo& glyphInfo = *(glyphs + index);
- Vector2& position = *(glyphPositions + index);
+ GlyphInfo& glyphInfo = *(glyphs + indexOfEllipsis);
+ Vector2& position = *(glyphPositions + indexOfEllipsis);
position.x -= (0.f > glyphInfo.xBearing) ? glyphInfo.xBearing : 0.f;
// Replace the glyph by the ellipsis glyph.
if(!inserted)
{
- if(index > 0u)
+ if(isTailMode && indexOfEllipsis > 0u)
{
- --index;
+ // Tail Mode: remove glyphs from startIndexOfEllipsis then decrement indexOfEllipsis, until arrive to index zero.
+ --indexOfEllipsis;
+ }
+ else if(!isTailMode && indexOfEllipsis < numberOfLaidOutGlyphs - 1u)
+ {
+ // Not Tail Mode: remove glyphs from startIndexOfEllipsis then increase indexOfEllipsis, until arrive to last index (numberOfGlyphs - 1u).
+ ++indexOfEllipsis;
}
else
{
}
// 'Removes' all the glyphs after the ellipsis glyph.
- numberOfLaidOutGlyphs -= numberOfRemovedGlyphs;
+ if(ellipsisPosition == DevelText::EllipsisPosition::MIDDLE)
+ {
+ //Reduce size, shift glyphs and start from ellipsis glyph
+ numberOfLaidOutGlyphs = numberOfActualLaidOutGlyphs - numberOfRemovedGlyphs;
+
+ GlyphIndex firstMiddleIndexOfElidedGlyphs = 0u;
+ GlyphIndex secondMiddleIndexOfElidedGlyphs = 0u;
+
+ bool isOnlySecondHalf = false;
+ if(isTailMode)
+ {
+ // Multi-lines case with MIDDLE
+ // In case the Ellipsis in the end of line,
+ // then this index will be the firstMiddleIndex.
+ // The secondMiddleIndex will be the fisrt index in next line.
+ // But in case there is no line after Ellipsis's line then secondMiddleIndex and endIndex equal firstMiddle
+ // Example:
+ // A: are laid out glyphs in line has Ellipsis in the end.
+ // N: are laid out glyphs in lines after removed lines.
+ // R: are removed glyphs.
+ // L: are removed glyphs when removed lines.
+ // AAAAAAAAAAAA...RRR => Here's the firstMiddleIndex (First index after last A)
+ // LLLLLLLLLLLLLLL
+ // LLLLLLLLLLLLLLL
+ // NNNNNNNNNNNNNN => Here's the secondMiddleIndex (First N)
+ // NNNNNNNNNN
+
+ firstMiddleIndexOfElidedGlyphs = indexOfEllipsis;
+ if(ellipsisNextLine != nullptr)
+ {
+ secondMiddleIndexOfElidedGlyphs = ellipsisNextLine->glyphRun.glyphIndex;
+ }
+ else
+ {
+ secondMiddleIndexOfElidedGlyphs = firstMiddleIndexOfElidedGlyphs;
+ mImpl->mVisualModel->SetEndIndexOfElidedGlyphs(firstMiddleIndexOfElidedGlyphs);
+ }
+ }
+ else
+ {
+ // Single line case with MIDDLE
+ // In case the Ellipsis in the middle of line,
+ // Then the last index in first half will be firstMiddleIndex.
+ // And the indexOfEllipsis will be secondMiddleIndex, which is the first index in second half.
+ // Example:
+ // A: are laid out glyphs in first half of line.
+ // N: are laid out glyphs in second half of line.
+ // R: are removed glyphs.
+ // L: re removed glyphs when layouting text
+ // AAAAAAALLLLLLLLLLLRRR...NNNNN
+ // firstMiddleIndex (index of last A)
+ // secondMiddleIndex (index before first N)
+
+ firstMiddleIndexOfElidedGlyphs = (ellipsisLine->glyphRun.numberOfGlyphs > 0u) ? (ellipsisLine->glyphRun.glyphIndex + ellipsisLine->glyphRun.numberOfGlyphs - 1u) : (ellipsisLine->glyphRun.glyphIndex);
+ secondMiddleIndexOfElidedGlyphs = indexOfEllipsis;
+ isOnlySecondHalf = ellipsisLine->glyphRun.numberOfGlyphs == 0u && ellipsisLine->glyphRunSecondHalf.numberOfGlyphs > 0u;
+ }
+
+ mImpl->mVisualModel->SetFirstMiddleIndexOfElidedGlyphs(firstMiddleIndexOfElidedGlyphs);
+ mImpl->mVisualModel->SetSecondMiddleIndexOfElidedGlyphs(secondMiddleIndexOfElidedGlyphs);
+
+ // The number of shifted glyphs and shifting positions will be different according to Single-line or Multi-lines.
+ // isOnlySecondHalf will be true when MIDDLE Ellipsis glyph in single line.
+ if(isOnlySecondHalf)
+ {
+ Length numberOfSecondHalfGlyphs = numberOfLaidOutGlyphs - firstMiddleIndexOfElidedGlyphs;
+
+ //Copy elided glyphs after the ellipsis glyph.
+ memcpy(glyphs + firstMiddleIndexOfElidedGlyphs, glyphs + secondMiddleIndexOfElidedGlyphs, numberOfSecondHalfGlyphs * sizeof(GlyphInfo));
+ memcpy(glyphPositions + firstMiddleIndexOfElidedGlyphs, glyphPositions + secondMiddleIndexOfElidedGlyphs, numberOfSecondHalfGlyphs * sizeof(Vector2));
+ }
+ else
+ {
+ Length numberOfSecondHalfGlyphs = numberOfLaidOutGlyphs - firstMiddleIndexOfElidedGlyphs + 1u;
+
+ //Copy elided glyphs after the ellipsis glyph.
+ memcpy(glyphs + firstMiddleIndexOfElidedGlyphs + 1u, glyphs + secondMiddleIndexOfElidedGlyphs, numberOfSecondHalfGlyphs * sizeof(GlyphInfo));
+ memcpy(glyphPositions + firstMiddleIndexOfElidedGlyphs + 1u, glyphPositions + secondMiddleIndexOfElidedGlyphs, numberOfSecondHalfGlyphs * sizeof(Vector2));
+ }
+ }
+ else if(ellipsisPosition == DevelText::EllipsisPosition::START)
+ {
+ numberOfLaidOutGlyphs = numberOfActualLaidOutGlyphs - numberOfRemovedGlyphs;
+ //Copy elided glyphs after the ellipsis glyph.
+ memcpy(glyphs, glyphs + startIndexOfEllipsis + numberOfRemovedGlyphs, numberOfLaidOutGlyphs * sizeof(GlyphInfo));
+ memcpy(glyphPositions, glyphPositions + startIndexOfEllipsis + numberOfRemovedGlyphs, numberOfLaidOutGlyphs * sizeof(Vector2));
+ mImpl->mVisualModel->SetStartIndexOfElidedGlyphs(indexOfEllipsis);
+ }
+ else // DevelText::EllipsisPosition::END
+ {
+ numberOfLaidOutGlyphs = numberOfActualLaidOutGlyphs - numberOfRemovedGlyphs;
+ mImpl->mVisualModel->SetEndIndexOfElidedGlyphs(indexOfEllipsis);
+ }
}
}
}
return 0u;
}
+DevelText::EllipsisPosition::Type View::GetEllipsisPosition() const
+{
+ DevelText::EllipsisPosition::Type ellipsisPosition = DevelText::EllipsisPosition::END;
+ if(mImpl->mVisualModel)
+ {
+ const VisualModel& model = *mImpl->mVisualModel;
+ ellipsisPosition = model.GetEllipsisPosition();
+ }
+
+ return ellipsisPosition;
+}
+
+bool View::IsTextElideEnabled() const
+{
+ bool isTextElideEnabled = false;
+
+ if(mImpl->mVisualModel)
+ {
+ const VisualModel& model = *mImpl->mVisualModel;
+ isTextElideEnabled = model.IsTextElideEnabled();
+ }
+
+ return isTextElideEnabled;
+}
+
+GlyphIndex View::GetStartIndexOfElidedGlyphs() const
+{
+ GlyphIndex startIndexOfElidedGlyphs = 0u;
+
+ if(mImpl->mVisualModel)
+ {
+ const VisualModel& model = *mImpl->mVisualModel;
+ startIndexOfElidedGlyphs = model.GetStartIndexOfElidedGlyphs();
+ }
+
+ return startIndexOfElidedGlyphs;
+}
+
+GlyphIndex View::GetEndIndexOfElidedGlyphs() const
+{
+ GlyphIndex endIndexOfElidedGlyphs = 0u;
+
+ if(mImpl->mVisualModel)
+ {
+ const VisualModel& model = *mImpl->mVisualModel;
+ endIndexOfElidedGlyphs = model.GetEndIndexOfElidedGlyphs();
+ }
+
+ return endIndexOfElidedGlyphs;
+}
+
+GlyphIndex View::GetFirstMiddleIndexOfElidedGlyphs() const
+{
+ GlyphIndex firstMiddleIndexOfElidedGlyphs = 0u;
+
+ if(mImpl->mVisualModel)
+ {
+ const VisualModel& model = *mImpl->mVisualModel;
+ firstMiddleIndexOfElidedGlyphs = model.GetFirstMiddleIndexOfElidedGlyphs();
+ }
+
+ return firstMiddleIndexOfElidedGlyphs;
+}
+
+GlyphIndex View::GetSecondMiddleIndexOfElidedGlyphs() const
+{
+ GlyphIndex secondMiddleIndexOfElidedGlyphs = 0u;
+
+ if(mImpl->mVisualModel)
+ {
+ const VisualModel& model = *mImpl->mVisualModel;
+ secondMiddleIndexOfElidedGlyphs = model.GetSecondMiddleIndexOfElidedGlyphs();
+ }
+
+ return secondMiddleIndexOfElidedGlyphs;
+}
+
} // namespace Text
} // namespace Toolkit