| /** |
| * Copyright (C) 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "SVGInlineTextBox.h" |
| |
| #include "Frame.h" |
| #include "FrameView.h" |
| #include "GraphicsContext.h" |
| #include "HitTestResult.h" |
| #include "InlineFlowBox.h" |
| #include "PointerEventsHitRules.h" |
| #include "RenderBlock.h" |
| #include "RenderInline.h" |
| #include "RenderSVGResourceSolidColor.h" |
| #include "RenderView.h" |
| #include "SVGRenderingContext.h" |
| #include "SVGResourcesCache.h" |
| #include "SVGRootInlineBox.h" |
| #include "TextPainter.h" |
| #include <wtf/IsoMallocInlines.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(SVGInlineTextBox); |
| |
| struct ExpectedSVGInlineTextBoxSize : public InlineTextBox { |
| float float1; |
| uint32_t bitfields : 5; |
| void* pointer; |
| Vector<SVGTextFragment> vector; |
| }; |
| |
| COMPILE_ASSERT(sizeof(SVGInlineTextBox) == sizeof(ExpectedSVGInlineTextBoxSize), SVGInlineTextBox_is_not_of_expected_size); |
| |
| SVGInlineTextBox::SVGInlineTextBox(RenderSVGInlineText& renderer) |
| : InlineTextBox(renderer) |
| , m_paintingResourceMode(OptionSet<RenderSVGResourceMode>().toRaw()) |
| , m_startsNewTextChunk(false) |
| { |
| } |
| |
| void SVGInlineTextBox::dirtyOwnLineBoxes() |
| { |
| InlineTextBox::dirtyLineBoxes(); |
| |
| // Clear the now stale text fragments |
| clearTextFragments(); |
| } |
| |
| void SVGInlineTextBox::dirtyLineBoxes() |
| { |
| dirtyOwnLineBoxes(); |
| |
| // And clear any following text fragments as the text on which they |
| // depend may now no longer exist, or glyph positions may be wrong |
| for (InlineTextBox* nextBox = nextTextBox(); nextBox; nextBox = nextBox->nextTextBox()) |
| nextBox->dirtyOwnLineBoxes(); |
| } |
| |
| int SVGInlineTextBox::offsetForPosition(float, bool) const |
| { |
| // SVG doesn't use the standard offset <-> position selection system, as it's not suitable for SVGs complex needs. |
| // vertical text selection, inline boxes spanning multiple lines (contrary to HTML, etc.) |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| int SVGInlineTextBox::offsetForPositionInFragment(const SVGTextFragment& fragment, float position, bool includePartialGlyphs) const |
| { |
| float scalingFactor = renderer().scalingFactor(); |
| ASSERT(scalingFactor); |
| |
| TextRun textRun = constructTextRun(renderer().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() + renderer().scaledFont().offsetForPosition(textRun, position * scalingFactor, includePartialGlyphs); |
| } |
| |
| float SVGInlineTextBox::positionForOffset(unsigned) const |
| { |
| // SVG doesn't use the offset <-> position selection system. |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| FloatRect SVGInlineTextBox::selectionRectForTextFragment(const SVGTextFragment& fragment, unsigned startPosition, unsigned endPosition, const RenderStyle& style) const |
| { |
| ASSERT_WITH_SECURITY_IMPLICATION(startPosition < endPosition); |
| |
| float scalingFactor = renderer().scalingFactor(); |
| ASSERT(scalingFactor); |
| |
| const FontCascade& scaledFont = renderer().scaledFont(); |
| const FontMetrics& scaledFontMetrics = scaledFont.fontMetrics(); |
| FloatPoint textOrigin(fragment.x, fragment.y); |
| if (scalingFactor != 1) |
| textOrigin.scale(scalingFactor); |
| |
| textOrigin.move(0, -scaledFontMetrics.floatAscent()); |
| |
| LayoutRect selectionRect { textOrigin, LayoutSize(0, LayoutUnit(fragment.height * scalingFactor)) }; |
| TextRun run = constructTextRun(style, fragment); |
| scaledFont.adjustSelectionRectForText(run, selectionRect, startPosition, endPosition); |
| FloatRect snappedSelectionRect = snapRectToDevicePixelsWithWritingDirection(selectionRect, renderer().document().deviceScaleFactor(), run.ltr()); |
| if (scalingFactor == 1) |
| return snappedSelectionRect; |
| |
| snappedSelectionRect.scale(1 / scalingFactor); |
| return snappedSelectionRect; |
| } |
| |
| LayoutRect SVGInlineTextBox::localSelectionRect(unsigned startPosition, unsigned endPosition) const |
| { |
| startPosition = clampedOffset(startPosition); |
| endPosition = clampedOffset(endPosition); |
| if (startPosition >= endPosition) |
| return LayoutRect(); |
| |
| auto& style = renderer().style(); |
| |
| AffineTransform fragmentTransform; |
| FloatRect selectionRect; |
| unsigned fragmentStartPosition = 0; |
| unsigned 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; |
| |
| FloatRect fragmentRect = selectionRectForTextFragment(fragment, fragmentStartPosition, fragmentEndPosition, style); |
| fragment.buildFragmentTransform(fragmentTransform); |
| if (!fragmentTransform.isIdentity()) |
| fragmentRect = fragmentTransform.mapRect(fragmentRect); |
| |
| selectionRect.unite(fragmentRect); |
| } |
| |
| return enclosingIntRect(selectionRect); |
| } |
| |
| static inline bool textShouldBePainted(const RenderSVGInlineText& textRenderer) |
| { |
| // FontCascade::pixelSize(), returns FontDescription::computedPixelSize(), which returns "int(x + 0.5)". |
| // If the absolute font size on screen is below x=0.5, don't render anything. |
| return textRenderer.scaledFont().pixelSize(); |
| } |
| |
| void SVGInlineTextBox::paintSelectionBackground(PaintInfo& paintInfo) |
| { |
| ASSERT(paintInfo.shouldPaintWithinRoot(renderer())); |
| ASSERT(paintInfo.phase == PaintPhase::Foreground || paintInfo.phase == PaintPhase::Selection); |
| ASSERT(truncation() == cNoTruncation); |
| |
| if (renderer().style().visibility() != Visibility::Visible) |
| return; |
| |
| auto& parentRenderer = parent()->renderer(); |
| ASSERT(!parentRenderer.document().printing()); |
| |
| // Determine whether or not we're selected. |
| bool paintSelectedTextOnly = paintInfo.phase == PaintPhase::Selection; |
| bool hasSelection = selectionState() != RenderObject::SelectionNone; |
| if (!hasSelection || paintSelectedTextOnly) |
| return; |
| |
| Color backgroundColor = renderer().selectionBackgroundColor(); |
| if (!backgroundColor.isVisible()) |
| return; |
| |
| if (!textShouldBePainted(renderer())) |
| return; |
| |
| auto& style = parentRenderer.style(); |
| |
| auto [startPosition, endPosition] = selectionStartEnd(); |
| |
| unsigned fragmentStartPosition = 0; |
| unsigned fragmentEndPosition = 0; |
| AffineTransform fragmentTransform; |
| unsigned textFragmentsSize = m_textFragments.size(); |
| for (unsigned i = 0; i < textFragmentsSize; ++i) { |
| SVGTextFragment& fragment = m_textFragments.at(i); |
| ASSERT(!m_paintingResource); |
| |
| fragmentStartPosition = startPosition; |
| fragmentEndPosition = endPosition; |
| if (!mapStartEndPositionsIntoFragmentCoordinates(fragment, fragmentStartPosition, fragmentEndPosition)) |
| continue; |
| |
| GraphicsContextStateSaver stateSaver(paintInfo.context()); |
| fragment.buildFragmentTransform(fragmentTransform); |
| if (!fragmentTransform.isIdentity()) |
| paintInfo.context().concatCTM(fragmentTransform); |
| |
| paintInfo.context().setFillColor(backgroundColor); |
| paintInfo.context().fillRect(selectionRectForTextFragment(fragment, fragmentStartPosition, fragmentEndPosition, style), backgroundColor); |
| |
| setPaintingResourceMode({ }); |
| } |
| |
| ASSERT(!m_paintingResource); |
| } |
| |
| void SVGInlineTextBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit, LayoutUnit) |
| { |
| ASSERT(paintInfo.shouldPaintWithinRoot(renderer())); |
| ASSERT(paintInfo.phase == PaintPhase::Foreground || paintInfo.phase == PaintPhase::Selection); |
| ASSERT(truncation() == cNoTruncation); |
| |
| if (renderer().style().visibility() != Visibility::Visible) |
| return; |
| |
| // Note: We're explicitely not supporting composition & custom underlines and custom highlighters - unlike InlineTextBox. |
| // If we ever need that for SVG, it's very easy to refactor and reuse the code. |
| |
| auto& parentRenderer = parent()->renderer(); |
| |
| bool paintSelectedTextOnly = paintInfo.phase == PaintPhase::Selection; |
| bool shouldPaintSelectionHighlight = !(paintInfo.paintBehavior.contains(PaintBehavior::SkipSelectionHighlight)); |
| bool hasSelection = !parentRenderer.document().printing() && selectionState() != RenderObject::SelectionNone; |
| if (!hasSelection && paintSelectedTextOnly) |
| return; |
| |
| if (!textShouldBePainted(renderer())) |
| return; |
| |
| auto& style = parentRenderer.style(); |
| |
| const SVGRenderStyle& svgStyle = style.svgStyle(); |
| |
| bool hasFill = svgStyle.hasFill(); |
| bool hasVisibleStroke = style.hasVisibleStroke(); |
| |
| const RenderStyle* selectionStyle = &style; |
| if (hasSelection && shouldPaintSelectionHighlight) { |
| selectionStyle = parentRenderer.getCachedPseudoStyle(PseudoId::Selection); |
| if (selectionStyle) { |
| const SVGRenderStyle& svgSelectionStyle = selectionStyle->svgStyle(); |
| |
| if (!hasFill) |
| hasFill = svgSelectionStyle.hasFill(); |
| if (!hasVisibleStroke) |
| hasVisibleStroke = selectionStyle->hasVisibleStroke(); |
| } else |
| selectionStyle = &style; |
| } |
| |
| if (renderer().view().frameView().paintBehavior().contains(PaintBehavior::RenderingSVGMask)) { |
| hasFill = true; |
| hasVisibleStroke = false; |
| } |
| |
| AffineTransform fragmentTransform; |
| unsigned textFragmentsSize = m_textFragments.size(); |
| for (unsigned i = 0; i < textFragmentsSize; ++i) { |
| SVGTextFragment& fragment = m_textFragments.at(i); |
| ASSERT(!m_paintingResource); |
| |
| GraphicsContextStateSaver stateSaver(paintInfo.context()); |
| fragment.buildFragmentTransform(fragmentTransform); |
| if (!fragmentTransform.isIdentity()) |
| paintInfo.context().concatCTM(fragmentTransform); |
| |
| // Spec: All text decorations except line-through should be drawn before the text is filled and stroked; thus, the text is rendered on top of these decorations. |
| auto decorations = style.textDecorationsInEffect(); |
| if (decorations & TextDecoration::Underline) |
| paintDecoration(paintInfo.context(), TextDecoration::Underline, fragment); |
| if (decorations & TextDecoration::Overline) |
| paintDecoration(paintInfo.context(), TextDecoration::Overline, fragment); |
| |
| auto paintOrder = RenderStyle::paintTypesForPaintOrder(style.paintOrder()); |
| for (unsigned i = 0; i < paintOrder.size(); ++i) { |
| switch (paintOrder.at(i)) { |
| case PaintType::Fill: |
| if (!hasFill) |
| continue; |
| setPaintingResourceMode({ RenderSVGResourceMode::ApplyToFill, RenderSVGResourceMode::ApplyToText }); |
| ASSERT(selectionStyle); |
| paintText(paintInfo.context(), style, *selectionStyle, fragment, hasSelection, paintSelectedTextOnly); |
| break; |
| case PaintType::Stroke: |
| if (!hasVisibleStroke) |
| continue; |
| setPaintingResourceMode({ RenderSVGResourceMode::ApplyToStroke, RenderSVGResourceMode::ApplyToText}); |
| ASSERT(selectionStyle); |
| paintText(paintInfo.context(), style, *selectionStyle, fragment, hasSelection, paintSelectedTextOnly); |
| break; |
| case PaintType::Markers: |
| continue; |
| } |
| } |
| |
| // Spec: Line-through should be drawn after the text is filled and stroked; thus, the line-through is rendered on top of the text. |
| if (decorations & TextDecoration::LineThrough) |
| paintDecoration(paintInfo.context(), TextDecoration::LineThrough, fragment); |
| |
| setPaintingResourceMode({ }); |
| } |
| |
| // Finally, paint the outline if any. |
| if (renderer().style().hasOutline() && is<RenderInline>(parentRenderer)) |
| downcast<RenderInline>(parentRenderer).paintOutline(paintInfo, paintOffset); |
| |
| ASSERT(!m_paintingResource); |
| } |
| |
| bool SVGInlineTextBox::acquirePaintingResource(GraphicsContext*& context, float scalingFactor, RenderBoxModelObject& renderer, const RenderStyle& style) |
| { |
| ASSERT(scalingFactor); |
| ASSERT(!paintingResourceMode().isEmpty()); |
| |
| Color fallbackColor; |
| if (paintingResourceMode().contains(RenderSVGResourceMode::ApplyToFill)) |
| m_paintingResource = RenderSVGResource::fillPaintingResource(renderer, style, fallbackColor); |
| else if (paintingResourceMode().contains(RenderSVGResourceMode::ApplyToStroke)) |
| m_paintingResource = RenderSVGResource::strokePaintingResource(renderer, style, fallbackColor); |
| else { |
| // We're either called for stroking or filling. |
| ASSERT_NOT_REACHED(); |
| } |
| |
| if (!m_paintingResource) |
| return false; |
| |
| if (!m_paintingResource->applyResource(renderer, style, context, paintingResourceMode())) { |
| if (fallbackColor.isValid()) { |
| RenderSVGResourceSolidColor* fallbackResource = RenderSVGResource::sharedSolidPaintingResource(); |
| fallbackResource->setColor(fallbackColor); |
| |
| m_paintingResource = fallbackResource; |
| m_paintingResource->applyResource(renderer, style, context, paintingResourceMode()); |
| } |
| } |
| |
| if (scalingFactor != 1 && paintingResourceMode().contains(RenderSVGResourceMode::ApplyToStroke)) |
| context->setStrokeThickness(context->strokeThickness() * scalingFactor); |
| |
| return true; |
| } |
| |
| void SVGInlineTextBox::releasePaintingResource(GraphicsContext*& context, const Path* path) |
| { |
| ASSERT(m_paintingResource); |
| |
| m_paintingResource->postApplyResource(parent()->renderer(), context, paintingResourceMode(), path, /*RenderSVGShape*/ nullptr); |
| m_paintingResource = nullptr; |
| } |
| |
| bool SVGInlineTextBox::prepareGraphicsContextForTextPainting(GraphicsContext*& context, float scalingFactor, const RenderStyle& style) |
| { |
| return acquirePaintingResource(context, scalingFactor, parent()->renderer(), style); |
| } |
| |
| void SVGInlineTextBox::restoreGraphicsContextAfterTextPainting(GraphicsContext*& context) |
| { |
| releasePaintingResource(context, /* path */nullptr); |
| } |
| |
| TextRun SVGInlineTextBox::constructTextRun(const RenderStyle& style, const SVGTextFragment& fragment) const |
| { |
| TextRun run(StringView(renderer().text()).substring(fragment.characterOffset, fragment.length) |
| , 0 /* xPos, only relevant with allowTabs=true */ |
| , 0 /* padding, only relevant for justified text, not relevant for SVG */ |
| , AllowTrailingExpansion |
| , direction() |
| , dirOverride() || style.rtlOrdering() == Order::Visual /* directionalOverride */); |
| |
| // We handle letter & word spacing ourselves. |
| run.disableSpacing(); |
| return run; |
| } |
| |
| bool SVGInlineTextBox::mapStartEndPositionsIntoFragmentCoordinates(const SVGTextFragment& fragment, unsigned& startPosition, unsigned& endPosition) const |
| { |
| if (startPosition >= endPosition) |
| return false; |
| |
| ASSERT(fragment.characterOffset >= start()); |
| unsigned offset = fragment.characterOffset - start(); |
| unsigned length = fragment.length; |
| |
| if (startPosition >= offset + length || endPosition <= offset) |
| return false; |
| |
| if (startPosition < offset) |
| startPosition = 0; |
| else { |
| ASSERT(startPosition >= offset); |
| startPosition -= offset; |
| } |
| |
| if (endPosition > offset + length) |
| endPosition = length; |
| else { |
| ASSERT(endPosition >= offset); |
| endPosition -= offset; |
| } |
| |
| ASSERT_WITH_SECURITY_IMPLICATION(startPosition < endPosition); |
| return true; |
| } |
| |
| static inline float positionOffsetForDecoration(OptionSet<TextDecoration> decoration, const FontMetrics& fontMetrics, float thickness) |
| { |
| // FIXME: For SVG Fonts we need to use the attributes defined in the <font-face> if specified. |
| // Compatible with Batik/Opera. |
| if (decoration == TextDecoration::Underline) |
| return fontMetrics.floatAscent() + thickness * 1.5f; |
| if (decoration == TextDecoration::Overline) |
| return thickness; |
| if (decoration == TextDecoration::LineThrough) |
| return fontMetrics.floatAscent() * 5 / 8.0f; |
| |
| ASSERT_NOT_REACHED(); |
| return 0.0f; |
| } |
| |
| static inline float thicknessForDecoration(OptionSet<TextDecoration>, const FontCascade& font) |
| { |
| // FIXME: For SVG Fonts we need to use the attributes defined in the <font-face> if specified. |
| // Compatible with Batik/Opera |
| return font.size() / 20.0f; |
| } |
| |
| static inline RenderBoxModelObject& findRendererDefininingTextDecoration(InlineFlowBox* parentBox) |
| { |
| // Lookup first render object in parent hierarchy which has text-decoration set. |
| RenderBoxModelObject* renderer = nullptr; |
| while (parentBox) { |
| renderer = &parentBox->renderer(); |
| |
| if (!renderer->style().textDecoration().isEmpty()) |
| break; |
| |
| parentBox = parentBox->parent(); |
| } |
| |
| ASSERT(renderer); |
| return *renderer; |
| } |
| |
| void SVGInlineTextBox::paintDecoration(GraphicsContext& context, OptionSet<TextDecoration> decoration, const SVGTextFragment& fragment) |
| { |
| if (renderer().style().textDecorationsInEffect().isEmpty()) |
| return; |
| |
| // Find out which render style defined the text-decoration, as its fill/stroke properties have to be used for drawing instead of ours. |
| auto& decorationRenderer = findRendererDefininingTextDecoration(parent()); |
| const RenderStyle& decorationStyle = decorationRenderer.style(); |
| |
| if (decorationStyle.visibility() == Visibility::Hidden) |
| return; |
| |
| const SVGRenderStyle& svgDecorationStyle = decorationStyle.svgStyle(); |
| |
| bool hasDecorationFill = svgDecorationStyle.hasFill(); |
| bool hasVisibleDecorationStroke = decorationStyle.hasVisibleStroke(); |
| |
| if (hasDecorationFill) { |
| setPaintingResourceMode(RenderSVGResourceMode::ApplyToFill); |
| paintDecorationWithStyle(context, decoration, fragment, decorationRenderer); |
| } |
| |
| if (hasVisibleDecorationStroke) { |
| setPaintingResourceMode(RenderSVGResourceMode::ApplyToStroke); |
| paintDecorationWithStyle(context, decoration, fragment, decorationRenderer); |
| } |
| } |
| |
| void SVGInlineTextBox::paintDecorationWithStyle(GraphicsContext& context, OptionSet<TextDecoration> decoration, const SVGTextFragment& fragment, RenderBoxModelObject& decorationRenderer) |
| { |
| ASSERT(!m_paintingResource); |
| ASSERT(!paintingResourceMode().isEmpty()); |
| |
| auto& decorationStyle = decorationRenderer.style(); |
| |
| float scalingFactor = 1; |
| FontCascade scaledFont; |
| RenderSVGInlineText::computeNewScaledFontForStyle(decorationRenderer, decorationStyle, scalingFactor, scaledFont); |
| ASSERT(scalingFactor); |
| |
| // The initial y value refers to overline position. |
| float thickness = thicknessForDecoration(decoration, scaledFont); |
| |
| if (fragment.width <= 0 && thickness <= 0) |
| return; |
| |
| FloatPoint decorationOrigin(fragment.x, fragment.y); |
| float width = fragment.width; |
| const FontMetrics& scaledFontMetrics = scaledFont.fontMetrics(); |
| |
| GraphicsContextStateSaver stateSaver(context); |
| if (scalingFactor != 1) { |
| width *= scalingFactor; |
| decorationOrigin.scale(scalingFactor); |
| context.scale(1 / scalingFactor); |
| } |
| |
| decorationOrigin.move(0, -scaledFontMetrics.floatAscent() + positionOffsetForDecoration(decoration, scaledFontMetrics, thickness)); |
| |
| Path path; |
| path.addRect(FloatRect(decorationOrigin, FloatSize(width, thickness))); |
| |
| GraphicsContext* contextPtr = &context; |
| if (acquirePaintingResource(contextPtr, scalingFactor, decorationRenderer, decorationStyle)) |
| releasePaintingResource(contextPtr, &path); |
| } |
| |
| void SVGInlineTextBox::paintTextWithShadows(GraphicsContext& context, const RenderStyle& style, TextRun& textRun, const SVGTextFragment& fragment, unsigned startPosition, unsigned endPosition) |
| { |
| float scalingFactor = renderer().scalingFactor(); |
| ASSERT(scalingFactor); |
| |
| const FontCascade& scaledFont = renderer().scaledFont(); |
| const ShadowData* shadow = style.textShadow(); |
| |
| FloatPoint textOrigin(fragment.x, fragment.y); |
| FloatSize textSize(fragment.width, fragment.height); |
| |
| if (scalingFactor != 1) { |
| textOrigin.scale(scalingFactor); |
| textSize.scale(scalingFactor); |
| } |
| |
| FloatRect shadowRect(FloatPoint(textOrigin.x(), textOrigin.y() - scaledFont.fontMetrics().floatAscent()), textSize); |
| |
| GraphicsContext* usedContext = &context; |
| do { |
| if (!prepareGraphicsContextForTextPainting(usedContext, scalingFactor, style)) |
| break; |
| |
| { |
| ShadowApplier shadowApplier(*usedContext, shadow, nullptr, shadowRect); |
| |
| if (!shadowApplier.didSaveContext()) |
| usedContext->save(); |
| usedContext->scale(1 / scalingFactor); |
| |
| scaledFont.drawText(*usedContext, textRun, textOrigin + shadowApplier.extraOffset(), startPosition, endPosition); |
| |
| if (!shadowApplier.didSaveContext()) |
| usedContext->restore(); |
| } |
| |
| restoreGraphicsContextAfterTextPainting(usedContext); |
| |
| if (!shadow) |
| break; |
| |
| shadow = shadow->next(); |
| } while (shadow); |
| } |
| |
| void SVGInlineTextBox::paintText(GraphicsContext& context, const RenderStyle& style, const RenderStyle& selectionStyle, const SVGTextFragment& fragment, bool hasSelection, bool paintSelectedTextOnly) |
| { |
| unsigned startPosition = 0; |
| unsigned endPosition = 0; |
| if (hasSelection) { |
| std::tie(startPosition, endPosition) = selectionStartEnd(); |
| hasSelection = mapStartEndPositionsIntoFragmentCoordinates(fragment, startPosition, endPosition); |
| } |
| |
| // Fast path if there is no selection, just draw the whole chunk part using the regular style |
| TextRun textRun = constructTextRun(style, fragment); |
| if (!hasSelection || startPosition >= endPosition) { |
| paintTextWithShadows(context, style, textRun, fragment, 0, fragment.length); |
| return; |
| } |
| |
| // Eventually draw text using regular style until the start position of the selection |
| if (startPosition > 0 && !paintSelectedTextOnly) |
| paintTextWithShadows(context, style, textRun, fragment, 0, startPosition); |
| |
| // Draw text using selection style from the start to the end position of the selection |
| if (style != selectionStyle) |
| SVGResourcesCache::clientStyleChanged(parent()->renderer(), StyleDifference::Repaint, selectionStyle); |
| |
| paintTextWithShadows(context, selectionStyle, textRun, fragment, startPosition, endPosition); |
| |
| if (style != selectionStyle) |
| SVGResourcesCache::clientStyleChanged(parent()->renderer(), StyleDifference::Repaint, style); |
| |
| // Eventually draw text using regular style from the end position of the selection to the end of the current chunk part |
| if (endPosition < fragment.length && !paintSelectedTextOnly) |
| paintTextWithShadows(context, style, textRun, fragment, endPosition, fragment.length); |
| } |
| |
| FloatRect SVGInlineTextBox::calculateBoundaries() const |
| { |
| FloatRect textRect; |
| |
| float scalingFactor = renderer().scalingFactor(); |
| ASSERT(scalingFactor); |
| |
| float baseline = renderer().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; |
| } |
| |
| bool SVGInlineTextBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit, LayoutUnit, HitTestAction) |
| { |
| // FIXME: integrate with InlineTextBox::nodeAtPoint better. |
| ASSERT(!isLineBreak()); |
| |
| PointerEventsHitRules hitRules(PointerEventsHitRules::SVG_TEXT_HITTESTING, request, renderer().style().pointerEvents()); |
| bool isVisible = renderer().style().visibility() == Visibility::Visible; |
| if (isVisible || !hitRules.requireVisible) { |
| if ((hitRules.canHitStroke && (renderer().style().svgStyle().hasStroke() || !hitRules.requireStroke)) |
| || (hitRules.canHitFill && (renderer().style().svgStyle().hasFill() || !hitRules.requireFill))) { |
| FloatPoint boxOrigin(x(), y()); |
| boxOrigin.moveBy(accumulatedOffset); |
| FloatRect rect(boxOrigin, size()); |
| if (locationInContainer.intersects(rect)) { |
| |
| float scalingFactor = renderer().scalingFactor(); |
| ASSERT(scalingFactor); |
| |
| float baseline = renderer().scaledFont().fontMetrics().floatAscent() / scalingFactor; |
| |
| AffineTransform fragmentTransform; |
| for (auto& fragment : m_textFragments) { |
| FloatQuad fragmentQuad(FloatRect(fragment.x, fragment.y - baseline, fragment.width, fragment.height)); |
| fragment.buildFragmentTransform(fragmentTransform); |
| if (!fragmentTransform.isIdentity()) |
| fragmentQuad = fragmentTransform.mapQuad(fragmentQuad); |
| |
| if (fragmentQuad.containsPoint(locationInContainer.point())) { |
| renderer().updateHitTestResult(result, locationInContainer.point() - toLayoutSize(accumulatedOffset)); |
| if (result.addNodeToListBasedTestResult(&renderer().textNode(), request, locationInContainer, rect) == HitTestProgress::Stop) |
| return true; |
| } |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| } // namespace WebCore |
