FloatRect SVGInlineTextBox::calculateBoundaries() const
{
FloatRect textRect;
RenderSVGInlineText* textRenderer = toRenderSVGInlineText(this->textRenderer());
ASSERT(textRenderer);
float scalingFactor = textRenderer->scalingFactor();
ASSERT(scalingFactor);
float baseline = textRenderer->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);
FloatRect fragmentRect(fragment.x, fragment.y - baseline, fragment.width, fragment.height);
fragment.buildFragmentTransform(fragmentTransform);
if (!fragmentTransform.isIdentity())
fragmentRect = fragmentTransform.mapRect(fragmentRect);
textRect.unite(fragmentRect);
}
return textRect;
}
FloatRect SVGInlineTextBox::selectionRectForTextFragment(const SVGTextFragment& fragment, int startPosition, int endPosition, RenderStyle* style)
{
ASSERT(startPosition < endPosition);
ASSERT(style);
FontCachePurgePreventer fontCachePurgePreventer;
RenderSVGInlineText* textRenderer = toRenderSVGInlineText(this->textRenderer());
ASSERT(textRenderer);
float scalingFactor = textRenderer->scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = textRenderer->scaledFont();
const FontMetrics& scaledFontMetrics = scaledFont.fontMetrics();
FloatPoint textOrigin(fragment.x, fragment.y);
if (scalingFactor != 1)
textOrigin.scale(scalingFactor, scalingFactor);
textOrigin.move(0, -scaledFontMetrics.floatAscent());
FloatRect selectionRect = scaledFont.selectionRectForText(constructTextRun(style, fragment), textOrigin, fragment.height * scalingFactor, startPosition, endPosition);
if (scalingFactor == 1)
return selectionRect;
selectionRect.scale(1 / scalingFactor);
return selectionRect;
}
void SVGInlineTextBox::paintTextWithShadows(GraphicsContext* context, RenderStyle* style, TextRun& textRun, const SVGTextFragment& fragment, int startPosition, int endPosition)
{
RenderSVGInlineText* textRenderer = toRenderSVGInlineText(this->textRenderer());
ASSERT(textRenderer);
float scalingFactor = textRenderer->scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = textRenderer->scaledFont();
const ShadowData* shadow = style->textShadow();
FloatPoint textOrigin(fragment.x, fragment.y);
FloatSize textSize(fragment.width, fragment.height);
if (scalingFactor != 1) {
textOrigin.scale(scalingFactor, scalingFactor);
textSize.scale(scalingFactor);
}
FloatRect shadowRect(FloatPoint(textOrigin.x(), textOrigin.y() - scaledFont.fontMetrics().floatAscent()), textSize);
do {
if (!prepareGraphicsContextForTextPainting(context, scalingFactor, textRun, style))
break;
FloatSize extraOffset;
if (shadow)
extraOffset = applyShadowToGraphicsContext(context, shadow, shadowRect, false /* stroked */, true /* opaque */, true /* horizontal */);
AffineTransform originalTransform;
if (scalingFactor != 1) {
originalTransform = context->getCTM();
AffineTransform newTransform = originalTransform;
newTransform.scale(1 / scalingFactor);
normalizeTransform(newTransform);
context->setCTM(newTransform);
}
scaledFont.drawText(context, textRun, textOrigin + extraOffset, startPosition, endPosition);
if (scalingFactor != 1)
context->setCTM(originalTransform);
restoreGraphicsContextAfterTextPainting(context, textRun);
if (!shadow)
break;
if (shadow->next())
context->restore();
else
context->clearShadow();
shadow = shadow->next();
} while (shadow);
}
static inline FloatRect calculateFragmentBoundaries(const RenderSVGInlineText& textRenderer, const SVGTextFragment& fragment)
{
float scalingFactor = textRenderer.scalingFactor();
ASSERT(scalingFactor);
float baseline = textRenderer.scaledFont().fontMetrics().floatAscent() / scalingFactor;
AffineTransform fragmentTransform;
FloatRect fragmentRect(fragment.x, fragment.y - baseline, fragment.width, fragment.height);
fragment.buildFragmentTransform(fragmentTransform);
return fragmentTransform.mapRect(fragmentRect);
}
void SVGInlineTextBox::paintTextWithShadows(GraphicsContext* context, RenderStyle* style, TextRun& textRun, const SVGTextFragment& fragment, int startPosition, int endPosition)
{
RenderSVGInlineText* textRenderer = toRenderSVGInlineText(this->textRenderer());
ASSERT(textRenderer);
float scalingFactor = textRenderer->scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = textRenderer->scaledFont();
const ShadowList* shadowList = style->textShadow();
// Text shadows are disabled when printing. http://crbug.com/258321
bool hasShadow = shadowList && !context->printing();
FloatPoint textOrigin(fragment.x, fragment.y);
FloatSize textSize(fragment.width, fragment.height);
if (scalingFactor != 1) {
textOrigin.scale(scalingFactor, scalingFactor);
textSize.scale(scalingFactor);
context->save();
context->scale(FloatSize(1 / scalingFactor, 1 / scalingFactor));
}
if (hasShadow) {
DrawLooper drawLooper;
for (size_t i = shadowList->shadows().size(); i--; ) {
const ShadowData& shadow = shadowList->shadows()[i];
FloatSize offset(shadow.x(), shadow.y());
drawLooper.addShadow(offset, shadow.blur(), shadow.color(),
DrawLooper::ShadowRespectsTransforms, DrawLooper::ShadowRespectsAlpha);
}
drawLooper.addUnmodifiedContent();
context->setDrawLooper(drawLooper);
}
if (prepareGraphicsContextForTextPainting(context, scalingFactor, textRun, style)) {
TextRunPaintInfo textRunPaintInfo(textRun);
textRunPaintInfo.from = startPosition;
textRunPaintInfo.to = endPosition;
textRunPaintInfo.bounds = FloatRect(textOrigin, textSize);
scaledFont.drawText(context, textRunPaintInfo, textOrigin);
restoreGraphicsContextAfterTextPainting(context, textRun);
}
if (scalingFactor != 1)
context->restore();
else if (hasShadow)
context->clearShadow();
}
int SVGInlineTextBox::offsetForPositionInFragment(const SVGTextFragment& fragment, float position, bool includePartialGlyphs) const
{
RenderSVGInlineText* textRenderer = toRenderSVGInlineText(this->textRenderer());
ASSERT(textRenderer);
float scalingFactor = textRenderer->scalingFactor();
ASSERT(scalingFactor);
RenderStyle* style = textRenderer->style();
ASSERT(style);
TextRun textRun = constructTextRun(style, fragment);
// Eventually handle lengthAdjust="spacingAndGlyphs".
// FIXME: Handle vertical text.
AffineTransform fragmentTransform;
fragment.buildFragmentTransform(fragmentTransform);
if (!fragmentTransform.isIdentity())
textRun.setHorizontalGlyphStretch(narrowPrecisionToFloat(fragmentTransform.xScale()));
return fragment.characterOffset - start() + textRenderer->scaledFont().offsetForPosition(textRun, position * scalingFactor, includePartialGlyphs);
}