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Bug 1073888 - Stop setting state on the gfxContext under SVGTextFrame::SetupCairoState, and restructure the code to make it easier to understand. r=heycam

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This commit is contained in:
Jonathan Watt 2014-09-28 10:06:22 +01:00
parent 7db382662a
commit d19a368695
4 changed files with 108 additions and 146 deletions
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205
layout/svg/SVGTextFrame.cpp
View File

@ -3671,10 +3671,16 @@ SVGTextFrame::PaintSVG(nsRenderingContext* aContext,
gfxTextContextPaint *outerContextPaint =
(gfxTextContextPaint*)aContext->GetDrawTarget()->GetUserData(&gfxTextContextPaint::sUserDataKey);
nsAutoPtr<gfxTextContextPaint> contextPaint;
SVGTextContextPaint contextPaint;
DrawMode drawMode =
SetupCairoState(gfx, frame, outerContextPaint,
getter_Transfers(contextPaint));
SetupContextPaint(gfx->CurrentMatrix(), frame, outerContextPaint,
&contextPaint);
if (int(drawMode) & int(DrawMode::GLYPH_STROKE)) {
// This may change the gfxContext's transform (for non-scaling stroke),
// in which case this needs to happen before we call SetMatrix() below.
nsSVGUtils::SetupCairoStrokeGeometry(frame, gfx, outerContextPaint);
}
// Set up the transform for painting the text frame for the substring
// indicated by the run.
@ -3691,10 +3697,10 @@ SVGTextFrame::PaintSVG(nsRenderingContext* aContext,
matrixForPaintServers,
paintSVGGlyphs);
frame->PaintText(aContext, nsPoint(), frameRect, item,
contextPaint, &callbacks);
&contextPaint, &callbacks);
} else {
frame->PaintText(aContext, nsPoint(), frameRect, item,
contextPaint, nullptr);
&contextPaint, nullptr);
}
}
@ -5566,109 +5572,102 @@ SVGTextFrame::TransformFrameRectFromTextChild(const nsRect& aRect,
return result - framePosition;
}
DrawMode
SVGTextFrame::SetupCairoState(gfxContext* aContext,
nsIFrame* aFrame,
gfxTextContextPaint* aOuterContextPaint,
gfxTextContextPaint** aThisContextPaint)
{
DrawMode toDraw = DrawMode(0);
SVGTextContextPaint *thisContextPaint = new SVGTextContextPaint();
if (SetupCairoStroke(aContext, aFrame, aOuterContextPaint, thisContextPaint)) {
toDraw = DrawMode(int(toDraw) | int(DrawMode::GLYPH_STROKE));
}
if (SetupCairoFill(aContext, aFrame, aOuterContextPaint, thisContextPaint)) {
toDraw = DrawMode(int(toDraw) | int(DrawMode::GLYPH_FILL));
}
*aThisContextPaint = thisContextPaint;
return toDraw;
}
bool
SVGTextFrame::SetupCairoStroke(gfxContext* aContext,
nsIFrame* aFrame,
gfxTextContextPaint* aOuterContextPaint,
SVGTextContextPaint* aThisContextPaint)
{
const nsStyleSVG *style = aFrame->StyleSVG();
if (style->mStroke.mType == eStyleSVGPaintType_None) {
aThisContextPaint->SetStrokeOpacity(0.0f);
return false;
}
nsSVGUtils::SetupCairoStrokeGeometry(aFrame, aContext, aOuterContextPaint);
float opacity = nsSVGUtils::GetOpacity(style->mStrokeOpacitySource,
style->mStrokeOpacity,
aOuterContextPaint);
SetupInheritablePaint(aContext, aFrame, opacity, aOuterContextPaint,
aThisContextPaint->mStrokePaint, &nsStyleSVG::mStroke,
nsSVGEffects::StrokeProperty());
aThisContextPaint->SetStrokeOpacity(opacity);
return opacity != 0.0f;
}
bool
SVGTextFrame::SetupCairoFill(gfxContext* aContext,
nsIFrame* aFrame,
gfxTextContextPaint* aOuterContextPaint,
SVGTextContextPaint* aThisContextPaint)
{
const nsStyleSVG *style = aFrame->StyleSVG();
if (style->mFill.mType == eStyleSVGPaintType_None) {
aThisContextPaint->SetFillOpacity(0.0f);
return false;
}
float opacity = nsSVGUtils::GetOpacity(style->mFillOpacitySource,
style->mFillOpacity,
aOuterContextPaint);
SetupInheritablePaint(aContext, aFrame, opacity, aOuterContextPaint,
aThisContextPaint->mFillPaint, &nsStyleSVG::mFill,
nsSVGEffects::FillProperty());
aThisContextPaint->SetFillOpacity(opacity);
return true;
}
void
SVGTextFrame::SetupInheritablePaint(gfxContext* aContext,
nsIFrame* aFrame,
float& aOpacity,
gfxTextContextPaint* aOuterContextPaint,
SVGTextContextPaint::Paint& aTargetPaint,
nsStyleSVGPaint nsStyleSVG::*aFillOrStroke,
const FramePropertyDescriptor* aProperty)
/**
* Stores in |aTargetPaint| information on how to reconstruct the current
* fill or stroke pattern. Will also set the paint opacity to transparent if
* the paint is set to "none".
* @param aOuterContextPaint pattern information from the outer text context
* @param aTargetPaint where to store the current pattern information
* @param aFillOrStroke member pointer to the paint we are setting up
* @param aProperty the frame property descriptor of the fill or stroke paint
* server frame
*/
static void
SetupInheritablePaint(const gfxMatrix& aContextMatrix,
nsIFrame* aFrame,
float& aOpacity,
gfxTextContextPaint* aOuterContextPaint,
SVGTextContextPaint::Paint& aTargetPaint,
nsStyleSVGPaint nsStyleSVG::*aFillOrStroke,
const FramePropertyDescriptor* aProperty)
{
const nsStyleSVG *style = aFrame->StyleSVG();
nsSVGPaintServerFrame *ps =
nsSVGEffects::GetPaintServer(aFrame, &(style->*aFillOrStroke), aProperty);
if (ps && ps->SetupPaintServer(aContext, aFrame, aFillOrStroke, aOpacity)) {
aTargetPaint.SetPaintServer(aFrame, aContext->CurrentMatrix(), ps);
} else if (nsSVGUtils::SetupContextPaint(aContext, aOuterContextPaint,
style->*aFillOrStroke,
aOpacity)) {
aTargetPaint.SetContextPaint(aOuterContextPaint, (style->*aFillOrStroke).mType);
} else {
nscolor color = nsSVGUtils::GetFallbackOrPaintColor(aContext,
aFrame->StyleContext(),
aFillOrStroke);
aTargetPaint.SetColor(color);
if (ps) {
nsRefPtr<gfxPattern> pattern =
new gfxPattern(gfxRGBA(NS_GET_R(color) / 255.0,
NS_GET_G(color) / 255.0,
NS_GET_B(color) / 255.0,
NS_GET_A(color) / 255.0 * aOpacity));
aContext->SetPattern(pattern);
ps->GetPaintServerPattern(aFrame, aContextMatrix, aFillOrStroke, aOpacity);
if (pattern) {
aTargetPaint.SetPaintServer(aFrame, aContextMatrix, ps);
return;
}
}
if (aOuterContextPaint) {
nsRefPtr<gfxPattern> pattern;
switch ((style->*aFillOrStroke).mType) {
case eStyleSVGPaintType_ContextFill:
pattern = aOuterContextPaint->GetFillPattern(aOpacity, aContextMatrix);
break;
case eStyleSVGPaintType_ContextStroke:
pattern = aOuterContextPaint->GetStrokePattern(aOpacity, aContextMatrix);
break;
default:
;
}
if (pattern) {
aTargetPaint.SetContextPaint(aOuterContextPaint, (style->*aFillOrStroke).mType);
return;
}
}
nscolor color =
nsSVGUtils::GetFallbackOrPaintColor(aFrame->StyleContext(), aFillOrStroke);
aTargetPaint.SetColor(color);
}
DrawMode
SVGTextFrame::SetupContextPaint(const gfxMatrix& aContextMatrix,
nsIFrame* aFrame,
gfxTextContextPaint* aOuterContextPaint,
SVGTextContextPaint* aThisContextPaint)
{
DrawMode toDraw = DrawMode(0);
const nsStyleSVG *style = aFrame->StyleSVG();
// fill:
if (style->mFill.mType == eStyleSVGPaintType_None) {
aThisContextPaint->SetFillOpacity(0.0f);
} else {
float opacity = nsSVGUtils::GetOpacity(style->mFillOpacitySource,
style->mFillOpacity,
aOuterContextPaint);
SetupInheritablePaint(aContextMatrix, aFrame, opacity, aOuterContextPaint,
aThisContextPaint->mFillPaint, &nsStyleSVG::mFill,
nsSVGEffects::FillProperty());
aThisContextPaint->SetFillOpacity(opacity);
toDraw = DrawMode(int(toDraw) | int(DrawMode::GLYPH_FILL));
}
// stroke:
if (style->mStroke.mType == eStyleSVGPaintType_None) {
aThisContextPaint->SetStrokeOpacity(0.0f);
} else {
float opacity = nsSVGUtils::GetOpacity(style->mStrokeOpacitySource,
style->mStrokeOpacity,
aOuterContextPaint);
SetupInheritablePaint(aContextMatrix, aFrame, opacity, aOuterContextPaint,
aThisContextPaint->mStrokePaint, &nsStyleSVG::mStroke,
nsSVGEffects::StrokeProperty());
aThisContextPaint->SetStrokeOpacity(opacity);
toDraw = DrawMode(int(toDraw) | int(DrawMode::GLYPH_STROKE));
}
return toDraw;
}

40
layout/svg/SVGTextFrame.h
View File

@ -594,46 +594,10 @@ private:
gfxFloat GetOffsetScale(nsIFrame* aTextPathFrame);
gfxFloat GetStartOffset(nsIFrame* aTextPathFrame);
DrawMode SetupCairoState(gfxContext* aContext,
nsIFrame* aFrame,
gfxTextContextPaint* aOuterContextPaint,
gfxTextContextPaint** aThisContextPaint);
/**
* Sets up the stroke style for |aFrame| in |aContext| and stores stroke
* pattern information in |aThisContextPaint|.
*/
bool SetupCairoStroke(gfxContext* aContext,
nsIFrame* aFrame,
gfxTextContextPaint* aOuterContextPaint,
SVGTextContextPaint* aThisContextPaint);
/**
* Sets up the fill style for |aFrame| in |aContext| and stores fill pattern
* information in |aThisContextPaint|.
*/
bool SetupCairoFill(gfxContext* aContext,
nsIFrame* aFrame,
gfxTextContextPaint* aOuterContextPaint,
SVGTextContextPaint* aThisContextPaint);
/**
* Stores in |aTargetPaint| information on how to reconstruct the current
* fill or stroke pattern. Will also set the paint opacity to transparent if
* the paint is set to "none".
* @param aOuterContextPaint pattern information from the outer text context
* @param aTargetPaint where to store the current pattern information
* @param aFillOrStroke member pointer to the paint we are setting up
* @param aProperty the frame property descriptor of the fill or stroke paint
* server frame
*/
void SetupInheritablePaint(gfxContext* aContext,
DrawMode SetupContextPaint(const gfxMatrix& aContextMatrix,
nsIFrame* aFrame,
float& aOpacity,
gfxTextContextPaint* aOuterContextPaint,
SVGTextContextPaint::Paint& aTargetPaint,
nsStyleSVGPaint nsStyleSVG::*aFillOrStroke,
const FramePropertyDescriptor* aProperty);
SVGTextContextPaint* aThisContextPaint);
/**
* The MutationObserver we have registered for the <text> element subtree.

6
layout/svg/nsSVGUtils.cpp
View File

@ -1204,7 +1204,7 @@ nsSVGUtils::PathExtentsToMaxStrokeExtents(const gfxRect& aPathExtents,
// ----------------------------------------------------------------------
/* static */ nscolor
nsSVGUtils::GetFallbackOrPaintColor(gfxContext *aContext, nsStyleContext *aStyleContext,
nsSVGUtils::GetFallbackOrPaintColor(nsStyleContext *aStyleContext,
nsStyleSVGPaint nsStyleSVG::*aFillOrStroke)
{
const nsStyleSVGPaint &paint = aStyleContext->StyleSVG()->*aFillOrStroke;
@ -1238,8 +1238,8 @@ SetupFallbackOrPaintColor(gfxContext *aContext, nsStyleContext *aStyleContext,
nsStyleSVGPaint nsStyleSVG::*aFillOrStroke,
float aOpacity)
{
nscolor color = nsSVGUtils::GetFallbackOrPaintColor(
aContext, aStyleContext, aFillOrStroke);
nscolor color =
nsSVGUtils::GetFallbackOrPaintColor(aStyleContext, aFillOrStroke);
aContext->SetColor(gfxRGBA(NS_GET_R(color)/255.0,
NS_GET_G(color)/255.0,

3
layout/svg/nsSVGUtils.h
View File

@ -503,8 +503,7 @@ public:
std::min(double(INT32_MAX), aVal)));
}
static nscolor GetFallbackOrPaintColor(gfxContext *aContext,
nsStyleContext *aStyleContext,
static nscolor GetFallbackOrPaintColor(nsStyleContext *aStyleContext,
nsStyleSVGPaint nsStyleSVG::*aFillOrStroke);
/**