FloatRectWillBeLayoutRect SVGInlineTextBox::selectionRectForTextFragment(const SVGTextFragment& fragment, int startPosition, int endPosition, RenderStyle* style)
{
ASSERT(startPosition < endPosition);
ASSERT(style);
RenderSVGInlineText& textRenderer = toRenderSVGInlineText(this->renderer());
FloatWillBeLayoutUnit scalingFactor = textRenderer.scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = textRenderer.scaledFont();
const FontMetrics& scaledFontMetrics = scaledFont.fontMetrics();
FloatPointWillBeLayoutPoint textOrigin(fragment.x, fragment.y);
if (scalingFactor != 1)
textOrigin.scale(scalingFactor, scalingFactor);
textOrigin.move(0, -scaledFontMetrics.floatAscent());
FloatRectWillBeLayoutRect selectionRect = scaledFont.selectionRectForText(constructTextRun(style, fragment), textOrigin, fragment.height * scalingFactor, startPosition, endPosition);
if (scalingFactor == 1)
return selectionRect;
selectionRect.scale(1 / scalingFactor);
return selectionRect;
}
FloatRectWillBeLayoutRect SVGInlineTextBox::calculateBoundaries() const
{
FloatRectWillBeLayoutRect textRect;
LayoutSVGInlineText& textLayoutObject = toLayoutSVGInlineText(this->layoutObject());
float scalingFactor = textLayoutObject.scalingFactor();
ASSERT(scalingFactor);
FloatWillBeLayoutUnit baseline = textLayoutObject.scaledFont().fontMetrics().floatAscent() / scalingFactor;
AffineTransform fragmentTransform;
unsigned textFragmentsSize = m_textFragments.size();
for (unsigned i = 0; i < textFragmentsSize; ++i) {
const SVGTextFragment& fragment = m_textFragments.at(i);
FloatRectWillBeLayoutRect fragmentRect(fragment.x, fragment.y - baseline, fragment.width, fragment.height);
fragment.buildFragmentTransform(fragmentTransform);
fragmentRect = fragmentTransform.mapRect(fragmentRect.toFloatRect());
textRect.unite(fragmentRect);
}
return textRect;
}
LayoutRect SVGInlineTextBox::localSelectionRect(int startPosition, int endPosition)
{
int boxStart = start();
startPosition = std::max(startPosition - boxStart, 0);
endPosition = std::min(endPosition - boxStart, static_cast<int>(len()));
if (startPosition >= endPosition)
return LayoutRect();
RenderStyle* style = renderer().style();
ASSERT(style);
AffineTransform fragmentTransform;
FloatRectWillBeLayoutRect selectionRect;
int fragmentStartPosition = 0;
int fragmentEndPosition = 0;
unsigned textFragmentsSize = m_textFragments.size();
for (unsigned i = 0; i < textFragmentsSize; ++i) {
const SVGTextFragment& fragment = m_textFragments.at(i);
fragmentStartPosition = startPosition;
fragmentEndPosition = endPosition;
if (!mapStartEndPositionsIntoFragmentCoordinates(fragment, fragmentStartPosition, fragmentEndPosition))
continue;
FloatRectWillBeLayoutRect fragmentRect = selectionRectForTextFragment(fragment, fragmentStartPosition, fragmentEndPosition, style);
fragment.buildFragmentTransform(fragmentTransform);
fragmentRect = fragmentTransform.mapRect(fragmentRect);
selectionRect.unite(fragmentRect);
}
// FIXME: the call to rawValue() below is temporary and should be removed once the transition
// to LayoutUnit-based types is complete (crbug.com/321237)
return enclosingIntRect(selectionRect.rawValue());
}