commit fb4b653594efa6646a5f62030a4129e387b77347
parent 08b764a4129fa4fb78ac7fe5bbe8c1106ac872ce
Author: Jonathan Kew <jkew@mozilla.com>
Date: Sat, 18 Oct 2025 07:26:08 +0000
Bug 1994197 - patch 2 - Convert more text measurement to use integer nscoord values. r=layout-reviewers,TYLin
Differential Revision: https://phabricator.services.mozilla.com/D268560
Diffstat:
7 files changed, 36 insertions(+), 38 deletions(-)
diff --git a/dom/canvas/CanvasRenderingContext2D.cpp b/dom/canvas/CanvasRenderingContext2D.cpp
@@ -4665,7 +4665,7 @@ struct MOZ_STACK_CLASS CanvasBidiProcessor final
}
aSpacing++;
}
- return mProcessor.mLetterSpacing != 0.0 || mProcessor.mWordSpacing != 0.0;
+ return mProcessor.mLetterSpacing != 0 || mProcessor.mWordSpacing != 0;
}
mozilla::StyleHyphens GetHyphensOption() const {
@@ -4677,9 +4677,9 @@ struct MOZ_STACK_CLASS CanvasBidiProcessor final
gfxTextRun::HyphenType* aBreakBefore) const {
MOZ_ASSERT_UNREACHABLE("no hyphenation in canvas2d text!");
}
- gfxFloat GetHyphenWidth() const {
+ nscoord GetHyphenWidth() const {
MOZ_ASSERT_UNREACHABLE("no hyphenation in canvas2d text!");
- return 0.0;
+ return 0;
}
already_AddRefed<DrawTarget> GetDrawTarget() const {
MOZ_ASSERT_UNREACHABLE("no hyphenation in canvas2d text!");
@@ -4740,7 +4740,7 @@ struct MOZ_STACK_CLASS CanvasBidiProcessor final
mBoundingBox = mBoundingBox.Union(textRunMetrics.mBoundingBox);
}
- return NSToCoordRound(textRunMetrics.mAdvanceWidth);
+ return textRunMetrics.mAdvanceWidth;
}
already_AddRefed<gfxPattern> GetGradientFor(Style aStyle) {
@@ -4936,8 +4936,8 @@ struct MOZ_STACK_CLASS CanvasBidiProcessor final
mozilla::gfx::PaletteCache& mPaletteCache;
// spacing adjustments to be applied
- gfx::Float mLetterSpacing = 0.0f;
- gfx::Float mWordSpacing = 0.0f;
+ nscoord mLetterSpacing = 0;
+ nscoord mWordSpacing = 0;
// to record any unsupported characters found in the text,
// and notify front-end if it is interested
@@ -5104,8 +5104,9 @@ UniquePtr<TextMetrics> CanvasRenderingContext2D::DrawOrMeasureText(
if (state.letterSpacing != 0.0 || state.wordSpacing != 0.0) {
processor.mLetterSpacing =
- state.letterSpacing * processor.mAppUnitsPerDevPixel;
- processor.mWordSpacing = state.wordSpacing * processor.mAppUnitsPerDevPixel;
+ NSToCoordRound(state.letterSpacing * processor.mAppUnitsPerDevPixel);
+ processor.mWordSpacing =
+ NSToCoordRound(state.wordSpacing * processor.mAppUnitsPerDevPixel);
processor.mTextRunFlags |= gfx::ShapedTextFlags::TEXT_ENABLE_SPACING;
if (state.letterSpacing != 0.0) {
processor.mTextRunFlags |=
diff --git a/gfx/src/nsFontMetrics.cpp b/gfx/src/nsFontMetrics.cpp
@@ -89,7 +89,7 @@ class StubPropertyProvider final : public gfxTextRun::PropertyProvider {
"This shouldn't be called because we never call BreakAndMeasureText");
return mozilla::StyleHyphens::None;
}
- gfxFloat GetHyphenWidth() const override {
+ nscoord GetHyphenWidth() const override {
NS_ERROR("This shouldn't be called because we never enable hyphens");
return 0;
}
@@ -405,7 +405,7 @@ static nsBoundingMetrics GetTextBoundingMetrics(
m.rightBearing = NSToCoordCeil(theMetrics.mBoundingBox.XMost());
m.ascent = NSToCoordCeil(-theMetrics.mBoundingBox.Y());
m.descent = NSToCoordCeil(theMetrics.mBoundingBox.YMost());
- m.width = NSToCoordRound(theMetrics.mAdvanceWidth);
+ m.width = theMetrics.mAdvanceWidth;
}
return m;
}
diff --git a/gfx/thebes/gfxFont.h b/gfx/thebes/gfxFont.h
@@ -1662,19 +1662,17 @@ class gfxFont {
* Metrics for a particular string
*/
struct RunMetrics {
- RunMetrics() { mAdvanceWidth = mAscent = mDescent = 0.0; }
-
void CombineWith(const RunMetrics& aOther, bool aOtherIsOnLeft);
// can be negative (partly due to negative spacing).
// Advance widths should be additive: the advance width of the
// (offset1, length1) plus the advance width of (offset1 + length1,
// length2) should be the advance width of (offset1, length1 + length2)
- gfxFloat mAdvanceWidth;
+ nscoord mAdvanceWidth = 0;
// For zero-width substrings, these must be zero!
- gfxFloat mAscent; // always non-negative
- gfxFloat mDescent; // always non-negative
+ gfxFloat mAscent = 0.0; // always non-negative
+ gfxFloat mDescent = 0.0; // always non-negative
// Bounding box that is guaranteed to include everything drawn.
// If a tight boundingBox was requested when these metrics were
diff --git a/gfx/thebes/gfxTextRun.h b/gfx/thebes/gfxTextRun.h
@@ -230,7 +230,7 @@ class gfxTextRun : public gfxShapedText {
// Returns the extra width that will be consumed by a hyphen. This should
// be constant for a given textrun.
- virtual gfxFloat GetHyphenWidth() const = 0;
+ virtual nscoord GetHyphenWidth() const = 0;
// Return orientation flags to be used when creating a hyphen textrun.
virtual mozilla::gfx::ShapedTextFlags GetShapedTextFlags() const = 0;
diff --git a/layout/generic/nsTextFrame.cpp b/layout/generic/nsTextFrame.cpp
@@ -272,11 +272,11 @@ TextAutospace::BoundarySet TextAutospace::InitBoundarySet(
} // namespace mozilla
struct TabWidth {
- TabWidth(uint32_t aOffset, uint32_t aWidth)
- : mOffset(aOffset), mWidth(float(aWidth)) {}
+ TabWidth(uint32_t aOffset, nscoord aWidth)
+ : mOffset(aOffset), mWidth(aWidth) {}
uint32_t mOffset; // DOM offset relative to the current frame's offset.
- float mWidth; // extra space to be added at this position (in app units)
+ nscoord mWidth; // extra space to be added at this position (in app units)
};
struct nsTextFrame::TabWidthStore {
@@ -3464,7 +3464,7 @@ nsTextFrame::PropertyProvider::PropertyProvider(
mLength(aLength),
mWordSpacing(WordSpacing(aFrame, *aTextStyle)),
mLetterSpacing(LetterSpacing(aFrame, *aTextStyle)),
- mMinTabAdvance(-1.0),
+ mMinTabAdvance(-1),
mHyphenWidth(-1),
mOffsetFromBlockOriginForTabs(aOffsetFromBlockOriginForTabs),
mJustificationArrayStart(0),
@@ -3494,7 +3494,7 @@ nsTextFrame::PropertyProvider::PropertyProvider(
mLength(aFrame->GetContentLength()),
mWordSpacing(WordSpacing(aFrame, *mTextStyle)),
mLetterSpacing(LetterSpacing(aFrame, *mTextStyle)),
- mMinTabAdvance(-1.0),
+ mMinTabAdvance(-1),
mHyphenWidth(-1),
mOffsetFromBlockOriginForTabs(0),
mJustificationArrayStart(0),
@@ -3514,7 +3514,7 @@ already_AddRefed<DrawTarget> nsTextFrame::PropertyProvider::GetDrawTarget()
}
gfxFloat nsTextFrame::PropertyProvider::MinTabAdvance() const {
- if (mMinTabAdvance < 0.0) {
+ if (mMinTabAdvance < 0) {
mMinTabAdvance = GetMinTabAdvanceAppUnits(mTextRun);
}
return mMinTabAdvance;
@@ -3863,7 +3863,7 @@ static gfxFloat ComputeTabWidthAppUnits(const nsIFrame* aFrame) {
MOZ_ASSERT(tabSize.IsNumber());
gfxFloat spaces = tabSize.number._0;
- MOZ_ASSERT(spaces >= 0);
+ MOZ_ASSERT(spaces >= 0.0);
const nsIFrame* cb = aFrame->GetContainingBlock(0, aFrame->StyleDisplay());
const auto* styleText = cb->StyleText();
@@ -4266,12 +4266,13 @@ bool nsTextFrame::PropertyProvider::GetSpacingInternal(Range aRange,
}
// aX and the result are in whole appunits.
-static gfxFloat AdvanceToNextTab(gfxFloat aX, gfxFloat aTabWidth,
- gfxFloat aMinAdvance) {
+static nscoord AdvanceToNextTab(nscoord aX, gfxFloat aTabWidth,
+ gfxFloat aMinAdvance) {
// Advance aX to the next multiple of aTabWidth. We must advance
// by at least aMinAdvance.
gfxFloat nextPos = aX + aMinAdvance;
- return aTabWidth > 0.0 ? ceil(nextPos / aTabWidth) * aTabWidth : nextPos;
+ return NSToCoordRound(aTabWidth > 0 ? ceil(nextPos / aTabWidth) * aTabWidth
+ : nextPos);
}
void nsTextFrame::PropertyProvider::CalcTabWidths(Range aRange,
@@ -4332,11 +4333,10 @@ void nsTextFrame::PropertyProvider::CalcTabWidths(Range aRange,
mTabWidths = new TabWidthStore(mFrame->GetContentOffset());
mFrame->SetProperty(TabWidthProperty(), mTabWidths);
}
- double nextTab = AdvanceToNextTab(mOffsetFromBlockOriginForTabs,
- aTabWidth, MinTabAdvance());
+ nscoord nextTab = AdvanceToNextTab(mOffsetFromBlockOriginForTabs,
+ aTabWidth, MinTabAdvance());
mTabWidths->mWidths.AppendElement(
- TabWidth(i - startOffset,
- NSToIntRound(nextTab - mOffsetFromBlockOriginForTabs)));
+ TabWidth(i - startOffset, nextTab - mOffsetFromBlockOriginForTabs));
mOffsetFromBlockOriginForTabs = nextTab;
}
@@ -4356,7 +4356,7 @@ void nsTextFrame::PropertyProvider::CalcTabWidths(Range aRange,
}
}
-gfxFloat nsTextFrame::PropertyProvider::GetHyphenWidth() const {
+nscoord nsTextFrame::PropertyProvider::GetHyphenWidth() const {
if (mHyphenWidth < 0) {
const auto& hyphenateChar = mTextStyle->mHyphenateCharacter;
if (hyphenateChar.IsAuto()) {
@@ -9547,7 +9547,7 @@ void nsTextFrame::AddInlineMinISizeForFlow(gfxContext* aRenderingContext,
aData->ForceBreak();
} else if (i < flowEndInTextRun && hyphenating &&
gfxTextRun::IsOptionalHyphenBreak(hyphBuffer[i - start])) {
- aData->OptionallyBreak(NSToCoordRound(provider.GetHyphenWidth()));
+ aData->OptionallyBreak(provider.GetHyphenWidth());
} else {
aData->OptionallyBreak();
}
@@ -10697,8 +10697,7 @@ void nsTextFrame::ReflowText(nsLineLayout& aLineLayout, nscoord aAvailableWidth,
// Disallow negative widths
WritingMode wm = GetWritingMode();
LogicalSize finalSize(wm);
- finalSize.ISize(wm) =
- NSToCoordCeilClamped(std::max(gfxFloat(0.0), textMetrics.mAdvanceWidth));
+ finalSize.ISize(wm) = std::max(0, textMetrics.mAdvanceWidth);
nscoord fontBaseline;
// Note(dshin): Baseline should tecnhically be halfway through the em box for
diff --git a/layout/generic/nsTextFrame.h b/layout/generic/nsTextFrame.h
@@ -161,7 +161,7 @@ class nsTextFrame : public nsIFrame {
void InitializeForMeasure();
bool GetSpacing(Range aRange, Spacing* aSpacing) const final;
- gfxFloat GetHyphenWidth() const final;
+ nscoord GetHyphenWidth() const final;
void GetHyphenationBreaks(Range aRange,
HyphenType* aBreakBefore) const final;
mozilla::StyleHyphens GetHyphensOption() const final {
@@ -270,8 +270,8 @@ class nsTextFrame : public nsIFrame {
// min advance for <tab> char
mutable gfxFloat mMinTabAdvance;
- mutable gfxFloat mHyphenWidth;
- mutable gfxFloat mOffsetFromBlockOriginForTabs;
+ mutable nscoord mHyphenWidth;
+ mutable nscoord mOffsetFromBlockOriginForTabs;
// The values in mJustificationSpacings corresponds to unskipped
// characters start from mJustificationArrayStart.
diff --git a/layout/mathml/nsMathMLChar.cpp b/layout/mathml/nsMathMLChar.cpp
@@ -889,7 +889,7 @@ static nsBoundingMetrics MeasureTextRun(DrawTarget* aDrawTarget,
bm.rightBearing = NSToCoordCeil(metrics.mBoundingBox.XMost());
bm.ascent = NSToCoordCeil(-metrics.mBoundingBox.Y());
bm.descent = NSToCoordCeil(metrics.mBoundingBox.YMost());
- bm.width = NSToCoordRound(metrics.mAdvanceWidth);
+ bm.width = metrics.mAdvanceWidth;
return bm;
}
