Index: Source/core/rendering/InlineTextBox.cpp |
diff --git a/Source/core/rendering/InlineTextBox.cpp b/Source/core/rendering/InlineTextBox.cpp |
index 24b24c55749c3ca464c6740252b51483da5dfaaf..1903390db2aaf133aa1f3d700f21d69c3445f93c 100644 |
--- a/Source/core/rendering/InlineTextBox.cpp |
+++ b/Source/core/rendering/InlineTextBox.cpp |
@@ -33,7 +33,7 @@ |
#include "core/editing/InputMethodController.h" |
#include "core/frame/LocalFrame.h" |
#include "core/page/Page.h" |
-#include "core/paint/BoxPainter.h" |
+#include "core/paint/InlineTextBoxPainter.h" |
#include "core/rendering/AbstractInlineTextBox.h" |
#include "core/rendering/EllipsisBox.h" |
#include "core/rendering/HitTestResult.h" |
@@ -72,9 +72,7 @@ typedef WTF::HashMap<const InlineTextBox*, LayoutRect> InlineTextBoxOverflowMap; |
static InlineTextBoxOverflowMap* gTextBoxesWithOverflow; |
typedef WTF::HashMap<const InlineTextBox*, TextBlobPtr> InlineTextBoxBlobCacheMap; |
-static InlineTextBoxBlobCacheMap* gTextBlobCache; |
- |
-static const int misspellingLineThickness = 3; |
+InlineTextBoxBlobCacheMap* gTextBlobCache; |
void InlineTextBox::destroy() |
{ |
@@ -133,21 +131,6 @@ LayoutUnit InlineTextBox::lineHeight() const |
return toRenderBoxModelObject(renderer().parent())->lineHeight(isFirstLineStyle(), isHorizontal() ? HorizontalLine : VerticalLine, PositionOnContainingLine); |
} |
-LayoutUnit InlineTextBox::selectionTop() |
-{ |
- return root().selectionTop(); |
-} |
- |
-LayoutUnit InlineTextBox::selectionBottom() |
-{ |
- return root().selectionBottom(); |
-} |
- |
-LayoutUnit InlineTextBox::selectionHeight() |
-{ |
- return root().selectionHeight(); |
-} |
- |
bool InlineTextBox::isSelected(int startPos, int endPos) const |
{ |
int sPos = std::max(startPos - m_start, 0); |
@@ -213,8 +196,8 @@ LayoutRect InlineTextBox::localSelectionRect(int startPos, int endPos) |
FontCachePurgePreventer fontCachePurgePreventer; |
- LayoutUnit selTop = selectionTop(); |
- LayoutUnit selHeight = selectionHeight(); |
+ LayoutUnit selTop = root().selectionTop(); |
+ LayoutUnit selHeight = root().selectionHeight(); |
RenderStyle* styleToUse = renderer().style(isFirstLineStyle()); |
const Font& font = styleToUse->font(); |
@@ -378,199 +361,7 @@ bool InlineTextBox::getEmphasisMarkPosition(RenderStyle* style, TextEmphasisPosi |
void InlineTextBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit /*lineTop*/, LayoutUnit /*lineBottom*/) |
{ |
- if (isLineBreak() || !paintInfo.shouldPaintWithinRoot(&renderer()) || renderer().style()->visibility() != VISIBLE |
- || m_truncation == cFullTruncation || paintInfo.phase == PaintPhaseOutline || !m_len) |
- return; |
- |
- ASSERT(paintInfo.phase != PaintPhaseSelfOutline && paintInfo.phase != PaintPhaseChildOutlines); |
- |
- LayoutRect logicalVisualOverflow = logicalOverflowRect(); |
- LayoutUnit logicalStart = logicalVisualOverflow.x() + (isHorizontal() ? paintOffset.x() : paintOffset.y()); |
- LayoutUnit logicalExtent = logicalVisualOverflow.width(); |
- |
- LayoutUnit paintEnd = isHorizontal() ? paintInfo.rect.maxX() : paintInfo.rect.maxY(); |
- LayoutUnit paintStart = isHorizontal() ? paintInfo.rect.x() : paintInfo.rect.y(); |
- |
- // When subpixel font scaling is enabled text runs are positioned at |
- // subpixel boundaries on the x-axis and thus there is no reason to |
- // snap the x value. We still round the y-axis to ensure consistent |
- // line heights. |
- LayoutPoint adjustedPaintOffset = RuntimeEnabledFeatures::subpixelFontScalingEnabled() |
- ? LayoutPoint(paintOffset.x(), paintOffset.y().round()) |
- : roundedIntPoint(paintOffset); |
- |
- if (logicalStart >= paintEnd || logicalStart + logicalExtent <= paintStart) |
- return; |
- |
- bool isPrinting = renderer().document().printing(); |
- |
- // Determine whether or not we're selected. |
- bool haveSelection = !isPrinting && paintInfo.phase != PaintPhaseTextClip && selectionState() != RenderObject::SelectionNone; |
- if (!haveSelection && paintInfo.phase == PaintPhaseSelection) |
- // When only painting the selection, don't bother to paint if there is none. |
- return; |
- |
- if (m_truncation != cNoTruncation) { |
- if (renderer().containingBlock()->style()->isLeftToRightDirection() != isLeftToRightDirection()) { |
- // Make the visible fragment of text hug the edge closest to the rest of the run by moving the origin |
- // at which we start drawing text. |
- // e.g. In the case of LTR text truncated in an RTL Context, the correct behavior is: |
- // |Hello|CBA| -> |...He|CBA| |
- // In order to draw the fragment "He" aligned to the right edge of it's box, we need to start drawing |
- // farther to the right. |
- // NOTE: WebKit's behavior differs from that of IE which appears to just overlay the ellipsis on top of the |
- // truncated string i.e. |Hello|CBA| -> |...lo|CBA| |
- LayoutUnit widthOfVisibleText = renderer().width(m_start, m_truncation, textPos(), isLeftToRightDirection() ? LTR : RTL, isFirstLineStyle()); |
- LayoutUnit widthOfHiddenText = m_logicalWidth - widthOfVisibleText; |
- // FIXME: The hit testing logic also needs to take this translation into account. |
- LayoutSize truncationOffset(isLeftToRightDirection() ? widthOfHiddenText : -widthOfHiddenText, 0); |
- adjustedPaintOffset.move(isHorizontal() ? truncationOffset : truncationOffset.transposedSize()); |
- } |
- } |
- |
- GraphicsContext* context = paintInfo.context; |
- RenderStyle* styleToUse = renderer().style(isFirstLineStyle()); |
- |
- adjustedPaintOffset.move(0, styleToUse->isHorizontalWritingMode() ? 0 : -logicalHeight()); |
- |
- FloatPoint boxOrigin = locationIncludingFlipping(); |
- boxOrigin.move(adjustedPaintOffset.x().toFloat(), adjustedPaintOffset.y().toFloat()); |
- FloatRect boxRect(boxOrigin, LayoutSize(logicalWidth(), logicalHeight())); |
- |
- RenderCombineText* combinedText = styleToUse->hasTextCombine() && renderer().isCombineText() && toRenderCombineText(renderer()).isCombined() ? &toRenderCombineText(renderer()) : 0; |
- |
- bool shouldRotate = !isHorizontal() && !combinedText; |
- if (shouldRotate) |
- context->concatCTM(rotation(boxRect, Clockwise)); |
- |
- // Determine whether or not we have composition underlines to draw. |
- bool containsComposition = renderer().node() && renderer().frame()->inputMethodController().compositionNode() == renderer().node(); |
- bool useCustomUnderlines = containsComposition && renderer().frame()->inputMethodController().compositionUsesCustomUnderlines(); |
- |
- // Determine text colors. |
- TextPainter::Style textStyle = TextPainter::textPaintingStyle(renderer(), styleToUse, paintInfo.forceBlackText(), isPrinting); |
- TextPainter::Style selectionStyle = TextPainter::selectionPaintingStyle(renderer(), haveSelection, paintInfo.forceBlackText(), isPrinting, textStyle); |
- bool paintSelectedTextOnly = (paintInfo.phase == PaintPhaseSelection); |
- bool paintSelectedTextSeparately = !paintSelectedTextOnly && textStyle != selectionStyle; |
- |
- // Set our font. |
- const Font& font = styleToUse->font(); |
- |
- FloatPoint textOrigin = FloatPoint(boxOrigin.x(), boxOrigin.y() + font.fontMetrics().ascent()); |
- if (combinedText) |
- combinedText->adjustTextOrigin(textOrigin, boxRect); |
- |
- // 1. Paint backgrounds behind text if needed. Examples of such backgrounds include selection |
- // and composition highlights. |
- if (paintInfo.phase != PaintPhaseSelection && paintInfo.phase != PaintPhaseTextClip && !isPrinting) { |
- if (containsComposition) { |
- paintCompositionBackgrounds(context, boxOrigin, styleToUse, font, useCustomUnderlines); |
- } |
- |
- paintDocumentMarkers(context, boxOrigin, styleToUse, font, true); |
- |
- if (haveSelection && !useCustomUnderlines) |
- paintSelection(context, boxOrigin, styleToUse, font, selectionStyle.fillColor); |
- } |
- |
- // 2. Now paint the foreground, including text and decorations like underline/overline (in quirks mode only). |
- int length = m_len; |
- int maximumLength; |
- StringView string; |
- if (!combinedText) { |
- string = renderer().text().createView(); |
- if (static_cast<unsigned>(length) != string.length() || m_start) |
- string.narrow(m_start, length); |
- maximumLength = renderer().textLength() - m_start; |
- } else { |
- combinedText->getStringToRender(m_start, string, length); |
- maximumLength = length; |
- } |
- |
- StringBuilder charactersWithHyphen; |
- TextRun textRun = constructTextRun(styleToUse, font, string, maximumLength, hasHyphen() ? &charactersWithHyphen : 0); |
- if (hasHyphen()) |
- length = textRun.length(); |
- |
- int selectionStart = 0; |
- int selectionEnd = 0; |
- if (paintSelectedTextOnly || paintSelectedTextSeparately) |
- selectionStartEnd(selectionStart, selectionEnd); |
- |
- bool respectHyphen = selectionEnd == m_len && hasHyphen(); |
- if (respectHyphen) |
- selectionEnd = textRun.length(); |
- |
- if (m_truncation != cNoTruncation) { |
- selectionStart = std::min<int>(selectionStart, m_truncation); |
- selectionEnd = std::min<int>(selectionEnd, m_truncation); |
- length = m_truncation; |
- } |
- |
- TextPainter textPainter(context, font, textRun, textOrigin, boxRect, isHorizontal()); |
- TextEmphasisPosition emphasisMarkPosition; |
- bool hasTextEmphasis = getEmphasisMarkPosition(styleToUse, emphasisMarkPosition); |
- if (hasTextEmphasis) |
- textPainter.setEmphasisMark(styleToUse->textEmphasisMarkString(), emphasisMarkPosition); |
- if (combinedText) |
- textPainter.setCombinedText(combinedText); |
- |
- if (!paintSelectedTextOnly) { |
- // FIXME: Truncate right-to-left text correctly. |
- int startOffset = 0; |
- int endOffset = length; |
- if (paintSelectedTextSeparately && selectionStart < selectionEnd) { |
- startOffset = selectionEnd; |
- endOffset = selectionStart; |
- } |
- |
- // FIXME: This cache should probably ultimately be held somewhere else. |
- // A hashmap is convenient to avoid a memory hit when the |
- // RuntimeEnabledFeature is off. |
- bool textBlobIsCacheable = RuntimeEnabledFeatures::textBlobEnabled() && startOffset == 0 && endOffset == length; |
- TextBlobPtr* cachedTextBlob = 0; |
- if (textBlobIsCacheable) { |
- if (!gTextBlobCache) |
- gTextBlobCache = new InlineTextBoxBlobCacheMap; |
- cachedTextBlob = &gTextBlobCache->add(this, nullptr).storedValue->value; |
- } |
- textPainter.paint(startOffset, endOffset, length, textStyle, cachedTextBlob); |
- } |
- |
- if ((paintSelectedTextOnly || paintSelectedTextSeparately) && selectionStart < selectionEnd) { |
- // paint only the text that is selected |
- textPainter.paint(selectionStart, selectionEnd, length, selectionStyle); |
- } |
- |
- // Paint decorations |
- TextDecoration textDecorations = styleToUse->textDecorationsInEffect(); |
- if (textDecorations != TextDecorationNone && !paintSelectedTextOnly) { |
- GraphicsContextStateSaver stateSaver(*context, false); |
- TextPainter::updateGraphicsContext(context, textStyle, isHorizontal(), stateSaver); |
- if (combinedText) |
- context->concatCTM(rotation(boxRect, Clockwise)); |
- paintDecoration(context, boxOrigin, textDecorations); |
- if (combinedText) |
- context->concatCTM(rotation(boxRect, Counterclockwise)); |
- } |
- |
- if (paintInfo.phase == PaintPhaseForeground) { |
- paintDocumentMarkers(context, boxOrigin, styleToUse, font, false); |
- |
- // Paint custom underlines for compositions. |
- if (useCustomUnderlines) { |
- const Vector<CompositionUnderline>& underlines = renderer().frame()->inputMethodController().customCompositionUnderlines(); |
- CompositionUnderlineRangeFilter filter(underlines, start(), end()); |
- for (CompositionUnderlineRangeFilter::ConstIterator it = filter.begin(); it != filter.end(); ++it) { |
- if (it->color == Color::transparent) |
- continue; |
- paintCompositionUnderline(context, boxOrigin, *it); |
- } |
- } |
- } |
- |
- if (shouldRotate) |
- context->concatCTM(rotation(boxRect, Counterclockwise)); |
+ InlineTextBoxPainter(*this).paint(paintInfo, paintOffset); |
} |
void InlineTextBox::selectionStartEnd(int& sPos, int& ePos) const |
@@ -591,560 +382,14 @@ void InlineTextBox::selectionStartEnd(int& sPos, int& ePos) const |
ePos = std::min(endPos - m_start, (int)m_len); |
} |
-void InlineTextBox::paintSelection(GraphicsContext* context, const FloatPoint& boxOrigin, RenderStyle* style, const Font& font, Color textColor) |
-{ |
- // See if we have a selection to paint at all. |
- int sPos, ePos; |
- selectionStartEnd(sPos, ePos); |
- if (sPos >= ePos) |
- return; |
- |
- Color c = renderer().selectionBackgroundColor(); |
- if (!c.alpha()) |
- return; |
- |
- // If the text color ends up being the same as the selection background, invert the selection |
- // background. |
- if (textColor == c) |
- c = Color(0xff - c.red(), 0xff - c.green(), 0xff - c.blue()); |
- |
- // If the text is truncated, let the thing being painted in the truncation |
- // draw its own highlight. |
- int length = m_truncation != cNoTruncation ? m_truncation : m_len; |
- StringView string = renderer().text().createView(); |
- |
- if (string.length() != static_cast<unsigned>(length) || m_start) |
- string.narrow(m_start, length); |
- |
- StringBuilder charactersWithHyphen; |
- bool respectHyphen = ePos == length && hasHyphen(); |
- TextRun textRun = constructTextRun(style, font, string, renderer().textLength() - m_start, respectHyphen ? &charactersWithHyphen : 0); |
- if (respectHyphen) |
- ePos = textRun.length(); |
- |
- LayoutUnit selectionBottom = root().selectionBottom(); |
- LayoutUnit selectionTop = root().selectionTopAdjustedForPrecedingBlock(); |
- |
- int deltaY = roundToInt(renderer().style()->isFlippedLinesWritingMode() ? selectionBottom - logicalBottom() : logicalTop() - selectionTop); |
- int selHeight = std::max(0, roundToInt(selectionBottom - selectionTop)); |
- |
- FloatPoint localOrigin(boxOrigin.x(), boxOrigin.y() - deltaY); |
- FloatRect clipRect(localOrigin, FloatSize(m_logicalWidth, selHeight)); |
- |
- GraphicsContextStateSaver stateSaver(*context); |
- context->clip(clipRect); |
- context->drawHighlightForText(font, textRun, localOrigin, selHeight, c, sPos, ePos); |
-} |
- |
-unsigned InlineTextBox::underlinePaintStart(const CompositionUnderline& underline) |
-{ |
- return std::max(static_cast<unsigned>(m_start), underline.startOffset); |
-} |
- |
-unsigned InlineTextBox::underlinePaintEnd(const CompositionUnderline& underline) |
-{ |
- unsigned paintEnd = std::min(end() + 1, underline.endOffset); // end() points at the last char, not past it. |
- if (m_truncation != cNoTruncation) |
- paintEnd = std::min(paintEnd, static_cast<unsigned>(m_start + m_truncation)); |
- return paintEnd; |
-} |
- |
-void InlineTextBox::paintSingleCompositionBackgroundRun(GraphicsContext* context, const FloatPoint& boxOrigin, RenderStyle* style, const Font& font, Color backgroundColor, int startPos, int endPos) |
-{ |
- int sPos = std::max(startPos - m_start, 0); |
- int ePos = std::min(endPos - m_start, static_cast<int>(m_len)); |
- if (sPos >= ePos) |
- return; |
- |
- int deltaY = renderer().style()->isFlippedLinesWritingMode() ? selectionBottom() - logicalBottom() : logicalTop() - selectionTop(); |
- int selHeight = selectionHeight(); |
- FloatPoint localOrigin(boxOrigin.x(), boxOrigin.y() - deltaY); |
- context->drawHighlightForText(font, constructTextRun(style, font), localOrigin, selHeight, backgroundColor, sPos, ePos); |
-} |
- |
-static StrokeStyle textDecorationStyleToStrokeStyle(TextDecorationStyle decorationStyle) |
-{ |
- StrokeStyle strokeStyle = SolidStroke; |
- switch (decorationStyle) { |
- case TextDecorationStyleSolid: |
- strokeStyle = SolidStroke; |
- break; |
- case TextDecorationStyleDouble: |
- strokeStyle = DoubleStroke; |
- break; |
- case TextDecorationStyleDotted: |
- strokeStyle = DottedStroke; |
- break; |
- case TextDecorationStyleDashed: |
- strokeStyle = DashedStroke; |
- break; |
- case TextDecorationStyleWavy: |
- strokeStyle = WavyStroke; |
- break; |
- } |
- |
- return strokeStyle; |
-} |
- |
-static int computeUnderlineOffset(const TextUnderlinePosition underlinePosition, const FontMetrics& fontMetrics, const InlineTextBox* inlineTextBox, const float textDecorationThickness) |
-{ |
- // Compute the gap between the font and the underline. Use at least one |
- // pixel gap, if underline is thick then use a bigger gap. |
- int gap = 0; |
- |
- // Underline position of zero means draw underline on Baseline Position, |
- // in Blink we need at least 1-pixel gap to adding following check. |
- // Positive underline Position means underline should be drawn above baselin e |
- // and negative value means drawing below baseline, negating the value as in Blink |
- // downward Y-increases. |
- |
- if (fontMetrics.underlinePosition()) |
- gap = -fontMetrics.underlinePosition(); |
- else |
- gap = std::max<int>(1, ceilf(textDecorationThickness / 2.f)); |
- |
- // FIXME: We support only horizontal text for now. |
- switch (underlinePosition) { |
- case TextUnderlinePositionAuto: |
- return fontMetrics.ascent() + gap; // Position underline near the alphabetic baseline. |
- case TextUnderlinePositionUnder: { |
- // Position underline relative to the under edge of the lowest element's content box. |
- const float offset = inlineTextBox->root().maxLogicalTop() - inlineTextBox->logicalTop(); |
- if (offset > 0) |
- return inlineTextBox->logicalHeight() + gap + offset; |
- return inlineTextBox->logicalHeight() + gap; |
- } |
- } |
- |
- ASSERT_NOT_REACHED(); |
- return fontMetrics.ascent() + gap; |
-} |
- |
-static void adjustStepToDecorationLength(float& step, float& controlPointDistance, float length) |
-{ |
- ASSERT(step > 0); |
- |
- if (length <= 0) |
- return; |
- |
- unsigned stepCount = static_cast<unsigned>(length / step); |
- |
- // Each Bezier curve starts at the same pixel that the previous one |
- // ended. We need to subtract (stepCount - 1) pixels when calculating the |
- // length covered to account for that. |
- float uncoveredLength = length - (stepCount * step - (stepCount - 1)); |
- float adjustment = uncoveredLength / stepCount; |
- step += adjustment; |
- controlPointDistance += adjustment; |
-} |
- |
-/* |
- * Draw one cubic Bezier curve and repeat the same pattern long the the decoration's axis. |
- * The start point (p1), controlPoint1, controlPoint2 and end point (p2) of the Bezier curve |
- * form a diamond shape: |
- * |
- * step |
- * |-----------| |
- * |
- * controlPoint1 |
- * + |
- * |
- * |
- * . . |
- * . . |
- * . . |
- * (x1, y1) p1 + . + p2 (x2, y2) - <--- Decoration's axis |
- * . . | |
- * . . | |
- * . . | controlPointDistance |
- * | |
- * | |
- * + - |
- * controlPoint2 |
- * |
- * |-----------| |
- * step |
- */ |
-static void strokeWavyTextDecoration(GraphicsContext* context, FloatPoint p1, FloatPoint p2, float strokeThickness) |
-{ |
- context->adjustLineToPixelBoundaries(p1, p2, strokeThickness, context->strokeStyle()); |
- |
- Path path; |
- path.moveTo(p1); |
- |
- // Distance between decoration's axis and Bezier curve's control points. |
- // The height of the curve is based on this distance. Use a minimum of 6 pixels distance since |
- // the actual curve passes approximately at half of that distance, that is 3 pixels. |
- // The minimum height of the curve is also approximately 3 pixels. Increases the curve's height |
- // as strockThickness increases to make the curve looks better. |
- float controlPointDistance = 3 * std::max<float>(2, strokeThickness); |
- |
- // Increment used to form the diamond shape between start point (p1), control |
- // points and end point (p2) along the axis of the decoration. Makes the |
- // curve wider as strockThickness increases to make the curve looks better. |
- float step = 2 * std::max<float>(2, strokeThickness); |
- |
- bool isVerticalLine = (p1.x() == p2.x()); |
- |
- if (isVerticalLine) { |
- ASSERT(p1.x() == p2.x()); |
- |
- float xAxis = p1.x(); |
- float y1; |
- float y2; |
- |
- if (p1.y() < p2.y()) { |
- y1 = p1.y(); |
- y2 = p2.y(); |
- } else { |
- y1 = p2.y(); |
- y2 = p1.y(); |
- } |
- |
- adjustStepToDecorationLength(step, controlPointDistance, y2 - y1); |
- FloatPoint controlPoint1(xAxis + controlPointDistance, 0); |
- FloatPoint controlPoint2(xAxis - controlPointDistance, 0); |
- |
- for (float y = y1; y + 2 * step <= y2;) { |
- controlPoint1.setY(y + step); |
- controlPoint2.setY(y + step); |
- y += 2 * step; |
- path.addBezierCurveTo(controlPoint1, controlPoint2, FloatPoint(xAxis, y)); |
- } |
- } else { |
- ASSERT(p1.y() == p2.y()); |
- |
- float yAxis = p1.y(); |
- float x1; |
- float x2; |
- |
- if (p1.x() < p2.x()) { |
- x1 = p1.x(); |
- x2 = p2.x(); |
- } else { |
- x1 = p2.x(); |
- x2 = p1.x(); |
- } |
- |
- adjustStepToDecorationLength(step, controlPointDistance, x2 - x1); |
- FloatPoint controlPoint1(0, yAxis + controlPointDistance); |
- FloatPoint controlPoint2(0, yAxis - controlPointDistance); |
- |
- for (float x = x1; x + 2 * step <= x2;) { |
- controlPoint1.setX(x + step); |
- controlPoint2.setX(x + step); |
- x += 2 * step; |
- path.addBezierCurveTo(controlPoint1, controlPoint2, FloatPoint(x, yAxis)); |
- } |
- } |
- |
- context->setShouldAntialias(true); |
- context->strokePath(path); |
-} |
- |
-static bool shouldSetDecorationAntialias(TextDecorationStyle decorationStyle) |
-{ |
- return decorationStyle == TextDecorationStyleDotted || decorationStyle == TextDecorationStyleDashed; |
-} |
- |
-static bool shouldSetDecorationAntialias(TextDecorationStyle underline, TextDecorationStyle overline, TextDecorationStyle linethrough) |
-{ |
- return shouldSetDecorationAntialias(underline) || shouldSetDecorationAntialias(overline) || shouldSetDecorationAntialias(linethrough); |
-} |
- |
-static void paintAppliedDecoration(GraphicsContext* context, FloatPoint start, float width, float doubleOffset, int wavyOffsetFactor, |
- RenderObject::AppliedTextDecoration decoration, float thickness, bool antialiasDecoration, bool isPrinting) |
-{ |
- context->setStrokeStyle(textDecorationStyleToStrokeStyle(decoration.style)); |
- context->setStrokeColor(decoration.color); |
- |
- switch (decoration.style) { |
- case TextDecorationStyleWavy: |
- strokeWavyTextDecoration(context, start + FloatPoint(0, doubleOffset * wavyOffsetFactor), start + FloatPoint(width, doubleOffset * wavyOffsetFactor), thickness); |
- break; |
- case TextDecorationStyleDotted: |
- case TextDecorationStyleDashed: |
- context->setShouldAntialias(antialiasDecoration); |
- // Fall through |
- default: |
- context->drawLineForText(start, width, isPrinting); |
- |
- if (decoration.style == TextDecorationStyleDouble) |
- context->drawLineForText(start + FloatPoint(0, doubleOffset), width, isPrinting); |
- } |
-} |
- |
-void InlineTextBox::paintDecoration(GraphicsContext* context, const FloatPoint& boxOrigin, TextDecoration deco) |
-{ |
- GraphicsContextStateSaver stateSaver(*context); |
- |
- if (m_truncation == cFullTruncation) |
- return; |
- |
- FloatPoint localOrigin = boxOrigin; |
- |
- float width = m_logicalWidth; |
- if (m_truncation != cNoTruncation) { |
- width = renderer().width(m_start, m_truncation, textPos(), isLeftToRightDirection() ? LTR : RTL, isFirstLineStyle()); |
- if (!isLeftToRightDirection()) |
- localOrigin.move(m_logicalWidth - width, 0); |
- } |
- |
- // Get the text decoration colors. |
- RenderObject::AppliedTextDecoration underline, overline, linethrough; |
- renderer().getTextDecorations(deco, underline, overline, linethrough, true); |
- if (isFirstLineStyle()) |
- renderer().getTextDecorations(deco, underline, overline, linethrough, true, true); |
- |
- // Use a special function for underlines to get the positioning exactly right. |
- bool isPrinting = renderer().document().printing(); |
- |
- RenderStyle* styleToUse = renderer().style(isFirstLineStyle()); |
- int baseline = styleToUse->fontMetrics().ascent(); |
- |
- // Set the thick of the line to be 10% (or something else ?)of the computed font size and not less than 1px. |
- // Using computedFontSize should take care of zoom as well. |
- |
- // Update Underline thickness, in case we have Faulty Font Metrics calculating underline thickness by old method. |
- float textDecorationThickness = styleToUse->fontMetrics().underlineThickness(); |
- int fontHeightInt = (int)(styleToUse->fontMetrics().floatHeight() + 0.5); |
- if ((textDecorationThickness == 0.f) || (textDecorationThickness >= (fontHeightInt >> 1))) |
- textDecorationThickness = std::max(1.f, styleToUse->computedFontSize() / 10.f); |
- |
- context->setStrokeThickness(textDecorationThickness); |
- |
- bool antialiasDecoration = shouldSetDecorationAntialias(overline.style, underline.style, linethrough.style) |
- && BoxPainter::shouldAntialiasLines(context); |
- |
- // Offset between lines - always non-zero, so lines never cross each other. |
- float doubleOffset = textDecorationThickness + 1.f; |
- |
- if (deco & TextDecorationUnderline) { |
- const int underlineOffset = computeUnderlineOffset(styleToUse->textUnderlinePosition(), styleToUse->fontMetrics(), this, textDecorationThickness); |
- paintAppliedDecoration(context, localOrigin + FloatPoint(0, underlineOffset), width, doubleOffset, 1, underline, textDecorationThickness, antialiasDecoration, isPrinting); |
- } |
- if (deco & TextDecorationOverline) { |
- paintAppliedDecoration(context, localOrigin, width, -doubleOffset, 1, overline, textDecorationThickness, antialiasDecoration, isPrinting); |
- } |
- if (deco & TextDecorationLineThrough) { |
- const float lineThroughOffset = 2 * baseline / 3; |
- paintAppliedDecoration(context, localOrigin + FloatPoint(0, lineThroughOffset), width, doubleOffset, 0, linethrough, textDecorationThickness, antialiasDecoration, isPrinting); |
- } |
-} |
- |
-static GraphicsContext::DocumentMarkerLineStyle lineStyleForMarkerType(DocumentMarker::MarkerType markerType) |
-{ |
- switch (markerType) { |
- case DocumentMarker::Spelling: |
- return GraphicsContext::DocumentMarkerSpellingLineStyle; |
- case DocumentMarker::Grammar: |
- return GraphicsContext::DocumentMarkerGrammarLineStyle; |
- default: |
- ASSERT_NOT_REACHED(); |
- return GraphicsContext::DocumentMarkerSpellingLineStyle; |
- } |
-} |
- |
void InlineTextBox::paintDocumentMarker(GraphicsContext* pt, const FloatPoint& boxOrigin, DocumentMarker* marker, RenderStyle* style, const Font& font, bool grammar) |
{ |
- // Never print spelling/grammar markers (5327887) |
- if (renderer().document().printing()) |
- return; |
- |
- if (m_truncation == cFullTruncation) |
- return; |
- |
- float start = 0; // start of line to draw, relative to tx |
- float width = m_logicalWidth; // how much line to draw |
- |
- // Determine whether we need to measure text |
- bool markerSpansWholeBox = true; |
- if (m_start <= (int)marker->startOffset()) |
- markerSpansWholeBox = false; |
- if ((end() + 1) != marker->endOffset()) // end points at the last char, not past it |
- markerSpansWholeBox = false; |
- if (m_truncation != cNoTruncation) |
- markerSpansWholeBox = false; |
- |
- if (!markerSpansWholeBox || grammar) { |
- int startPosition = std::max<int>(marker->startOffset() - m_start, 0); |
- int endPosition = std::min<int>(marker->endOffset() - m_start, m_len); |
- |
- if (m_truncation != cNoTruncation) |
- endPosition = std::min<int>(endPosition, m_truncation); |
- |
- // Calculate start & width |
- int deltaY = renderer().style()->isFlippedLinesWritingMode() ? selectionBottom() - logicalBottom() : logicalTop() - selectionTop(); |
- int selHeight = selectionHeight(); |
- FloatPoint startPoint(boxOrigin.x(), boxOrigin.y() - deltaY); |
- TextRun run = constructTextRun(style, font); |
- |
- // FIXME: Convert the document markers to float rects. |
- IntRect markerRect = enclosingIntRect(font.selectionRectForText(run, startPoint, selHeight, startPosition, endPosition)); |
- start = markerRect.x() - startPoint.x(); |
- width = markerRect.width(); |
- |
- // Store rendered rects for bad grammar markers, so we can hit-test against it elsewhere in order to |
- // display a toolTip. We don't do this for misspelling markers. |
- if (grammar) { |
- markerRect.move(-boxOrigin.x(), -boxOrigin.y()); |
- markerRect = renderer().localToAbsoluteQuad(FloatRect(markerRect)).enclosingBoundingBox(); |
- toRenderedDocumentMarker(marker)->setRenderedRect(markerRect); |
- } |
- } |
- |
- // IMPORTANT: The misspelling underline is not considered when calculating the text bounds, so we have to |
- // make sure to fit within those bounds. This means the top pixel(s) of the underline will overlap the |
- // bottom pixel(s) of the glyphs in smaller font sizes. The alternatives are to increase the line spacing (bad!!) |
- // or decrease the underline thickness. The overlap is actually the most useful, and matches what AppKit does. |
- // So, we generally place the underline at the bottom of the text, but in larger fonts that's not so good so |
- // we pin to two pixels under the baseline. |
- int lineThickness = misspellingLineThickness; |
- int baseline = renderer().style(isFirstLineStyle())->fontMetrics().ascent(); |
- int descent = logicalHeight() - baseline; |
- int underlineOffset; |
- if (descent <= (2 + lineThickness)) { |
- // Place the underline at the very bottom of the text in small/medium fonts. |
- underlineOffset = logicalHeight() - lineThickness; |
- } else { |
- // In larger fonts, though, place the underline up near the baseline to prevent a big gap. |
- underlineOffset = baseline + 2; |
- } |
- pt->drawLineForDocumentMarker(FloatPoint(boxOrigin.x() + start, boxOrigin.y() + underlineOffset), width, lineStyleForMarkerType(marker->type())); |
+ InlineTextBoxPainter(*this).paintDocumentMarker(pt, boxOrigin, marker, style, font, grammar); |
} |
void InlineTextBox::paintTextMatchMarker(GraphicsContext* pt, const FloatPoint& boxOrigin, DocumentMarker* marker, RenderStyle* style, const Font& font) |
{ |
- // Use same y positioning and height as for selection, so that when the selection and this highlight are on |
- // the same word there are no pieces sticking out. |
- int deltaY = renderer().style()->isFlippedLinesWritingMode() ? selectionBottom() - logicalBottom() : logicalTop() - selectionTop(); |
- int selHeight = selectionHeight(); |
- |
- int sPos = std::max(marker->startOffset() - m_start, (unsigned)0); |
- int ePos = std::min(marker->endOffset() - m_start, (unsigned)m_len); |
- TextRun run = constructTextRun(style, font); |
- |
- // Always compute and store the rect associated with this marker. The computed rect is in absolute coordinates. |
- IntRect markerRect = enclosingIntRect(font.selectionRectForText(run, IntPoint(x(), selectionTop()), selHeight, sPos, ePos)); |
- markerRect = renderer().localToAbsoluteQuad(FloatRect(markerRect)).enclosingBoundingBox(); |
- toRenderedDocumentMarker(marker)->setRenderedRect(markerRect); |
- |
- // Optionally highlight the text |
- if (renderer().frame()->editor().markedTextMatchesAreHighlighted()) { |
- Color color = marker->activeMatch() ? |
- RenderTheme::theme().platformActiveTextSearchHighlightColor() : |
- RenderTheme::theme().platformInactiveTextSearchHighlightColor(); |
- GraphicsContextStateSaver stateSaver(*pt); |
- pt->clip(FloatRect(boxOrigin.x(), boxOrigin.y() - deltaY, m_logicalWidth, selHeight)); |
- pt->drawHighlightForText(font, run, FloatPoint(boxOrigin.x(), boxOrigin.y() - deltaY), selHeight, color, sPos, ePos); |
- } |
-} |
- |
-void InlineTextBox::paintCompositionBackgrounds(GraphicsContext* pt, const FloatPoint& boxOrigin, RenderStyle* style, const Font& font, bool useCustomUnderlines) |
-{ |
- if (useCustomUnderlines) { |
- // Paint custom background highlights for compositions. |
- const Vector<CompositionUnderline>& underlines = renderer().frame()->inputMethodController().customCompositionUnderlines(); |
- CompositionUnderlineRangeFilter filter(underlines, start(), end()); |
- for (CompositionUnderlineRangeFilter::ConstIterator it = filter.begin(); it != filter.end(); ++it) { |
- if (it->backgroundColor == Color::transparent) |
- continue; |
- paintSingleCompositionBackgroundRun(pt, boxOrigin, style, font, it->backgroundColor, underlinePaintStart(*it), underlinePaintEnd(*it)); |
- } |
- |
- } else { |
- paintSingleCompositionBackgroundRun(pt, boxOrigin, style, font, RenderTheme::theme().platformDefaultCompositionBackgroundColor(), |
- renderer().frame()->inputMethodController().compositionStart(), |
- renderer().frame()->inputMethodController().compositionEnd()); |
- } |
-} |
- |
-void InlineTextBox::paintDocumentMarkers(GraphicsContext* pt, const FloatPoint& boxOrigin, RenderStyle* style, const Font& font, bool background) |
-{ |
- if (!renderer().node()) |
- return; |
- |
- DocumentMarkerVector markers = renderer().document().markers().markersFor(renderer().node()); |
- DocumentMarkerVector::const_iterator markerIt = markers.begin(); |
- |
- // Give any document markers that touch this run a chance to draw before the text has been drawn. |
- // Note end() points at the last char, not one past it like endOffset and ranges do. |
- for ( ; markerIt != markers.end(); ++markerIt) { |
- DocumentMarker* marker = *markerIt; |
- |
- // Paint either the background markers or the foreground markers, but not both |
- switch (marker->type()) { |
- case DocumentMarker::Grammar: |
- case DocumentMarker::Spelling: |
- if (background) |
- continue; |
- break; |
- case DocumentMarker::TextMatch: |
- if (!background) |
- continue; |
- break; |
- default: |
- continue; |
- } |
- |
- if (marker->endOffset() <= start()) |
- // marker is completely before this run. This might be a marker that sits before the |
- // first run we draw, or markers that were within runs we skipped due to truncation. |
- continue; |
- |
- if (marker->startOffset() > end()) |
- // marker is completely after this run, bail. A later run will paint it. |
- break; |
- |
- // marker intersects this run. Paint it. |
- switch (marker->type()) { |
- case DocumentMarker::Spelling: |
- paintDocumentMarker(pt, boxOrigin, marker, style, font, false); |
- break; |
- case DocumentMarker::Grammar: |
- paintDocumentMarker(pt, boxOrigin, marker, style, font, true); |
- break; |
- case DocumentMarker::TextMatch: |
- paintTextMatchMarker(pt, boxOrigin, marker, style, font); |
- break; |
- default: |
- ASSERT_NOT_REACHED(); |
- } |
- |
- } |
-} |
- |
-void InlineTextBox::paintCompositionUnderline(GraphicsContext* ctx, const FloatPoint& boxOrigin, const CompositionUnderline& underline) |
-{ |
- if (m_truncation == cFullTruncation) |
- return; |
- |
- unsigned paintStart = underlinePaintStart(underline); |
- unsigned paintEnd = underlinePaintEnd(underline); |
- |
- // start of line to draw, relative to paintOffset. |
- float start = paintStart == static_cast<unsigned>(m_start) ? 0 : |
- renderer().width(m_start, paintStart - m_start, textPos(), isLeftToRightDirection() ? LTR : RTL, isFirstLineStyle()); |
- // how much line to draw |
- float width = (paintStart == static_cast<unsigned>(m_start) && paintEnd == static_cast<unsigned>(end()) + 1) ? m_logicalWidth : |
- renderer().width(paintStart, paintEnd - paintStart, textPos() + start, isLeftToRightDirection() ? LTR : RTL, isFirstLineStyle()); |
- |
- // Thick marked text underlines are 2px thick as long as there is room for the 2px line under the baseline. |
- // All other marked text underlines are 1px thick. |
- // If there's not enough space the underline will touch or overlap characters. |
- int lineThickness = 1; |
- int baseline = renderer().style(isFirstLineStyle())->fontMetrics().ascent(); |
- if (underline.thick && logicalHeight() - baseline >= 2) |
- lineThickness = 2; |
- |
- // We need to have some space between underlines of subsequent clauses, because some input methods do not use different underline styles for those. |
- // We make each line shorter, which has a harmless side effect of shortening the first and last clauses, too. |
- start += 1; |
- width -= 2; |
- |
- ctx->setStrokeColor(underline.color); |
- ctx->setStrokeThickness(lineThickness); |
- ctx->drawLineForText(FloatPoint(boxOrigin.x() + start, boxOrigin.y() + logicalHeight() - lineThickness), width, renderer().document().printing()); |
+ InlineTextBoxPainter(*this).paintTextMatchMarker(pt, boxOrigin, marker, style, font); |
} |
int InlineTextBox::caretMinOffset() const |