Title: [285334] trunk/Source/WebCore
Revision
285334
Author
[email protected]
Date
2021-11-04 21:52:41 -0700 (Thu, 04 Nov 2021)

Log Message

Factor out didDraw / didDrawEntireCanvas calls in canvas drawing functions
https://bugs.webkit.org/show_bug.cgi?id=232527
<rdar://problem/84834950>

Reviewed by Antti Koivisto.

No behavior change except for in drawImage, where the
paintCurrentFrameInContext code path now will check whether to call
didDrawEntireCanvas.

* html/canvas/CanvasRenderingContext2DBase.cpp:
(WebCore::CanvasRenderingContext2DBase::fillInternal):
(WebCore::CanvasRenderingContext2DBase::strokeInternal):
(WebCore::CanvasRenderingContext2DBase::fillRect):
(WebCore::CanvasRenderingContext2DBase::strokeRect):
(WebCore::CanvasRenderingContext2DBase::drawImage):
(WebCore::CanvasRenderingContext2DBase::didDraw):
(WebCore::CanvasRenderingContext2DBase::drawTextUnchecked):
* html/canvas/CanvasRenderingContext2DBase.h:

Modified Paths

Diff

Modified: trunk/Source/WebCore/ChangeLog (285333 => 285334)


--- trunk/Source/WebCore/ChangeLog	2021-11-05 04:06:12 UTC (rev 285333)
+++ trunk/Source/WebCore/ChangeLog	2021-11-05 04:52:41 UTC (rev 285334)
@@ -1,5 +1,27 @@
 2021-11-04  Cameron McCormack  <[email protected]>
 
+        Factor out didDraw / didDrawEntireCanvas calls in canvas drawing functions
+        https://bugs.webkit.org/show_bug.cgi?id=232527
+        <rdar://problem/84834950>
+
+        Reviewed by Antti Koivisto.
+
+        No behavior change except for in drawImage, where the
+        paintCurrentFrameInContext code path now will check whether to call
+        didDrawEntireCanvas.
+
+        * html/canvas/CanvasRenderingContext2DBase.cpp:
+        (WebCore::CanvasRenderingContext2DBase::fillInternal):
+        (WebCore::CanvasRenderingContext2DBase::strokeInternal):
+        (WebCore::CanvasRenderingContext2DBase::fillRect):
+        (WebCore::CanvasRenderingContext2DBase::strokeRect):
+        (WebCore::CanvasRenderingContext2DBase::drawImage):
+        (WebCore::CanvasRenderingContext2DBase::didDraw):
+        (WebCore::CanvasRenderingContext2DBase::drawTextUnchecked):
+        * html/canvas/CanvasRenderingContext2DBase.h:
+
+2021-11-04  Cameron McCormack  <[email protected]>
+
         Avoid sending video data to Web process for canvas.drawImage(video)
         https://bugs.webkit.org/show_bug.cgi?id=230766
         <rdar://problem/83576009>

Modified: trunk/Source/WebCore/html/canvas/CanvasRenderingContext2DBase.cpp (285333 => 285334)


--- trunk/Source/WebCore/html/canvas/CanvasRenderingContext2DBase.cpp	2021-11-05 04:06:12 UTC (rev 285333)
+++ trunk/Source/WebCore/html/canvas/CanvasRenderingContext2DBase.cpp	2021-11-05 04:52:41 UTC (rev 285334)
@@ -1061,12 +1061,9 @@
     } else
         c->fillPath(path);
     
-    if (isEntireBackingStoreDirty())
-        didDraw(std::nullopt);
-    else if (repaintEntireCanvas)
-        didDrawEntireCanvas();
-    else
-        didDraw(path.fastBoundingRect());
+    didDraw(repaintEntireCanvas, [&] {
+        return path.fastBoundingRect();
+    });
 
     c->setFillRule(savedFillRule);
 }
@@ -1100,15 +1097,11 @@
     } else
         c->strokePath(path);
 
-    if (isEntireBackingStoreDirty())
-        didDraw(std::nullopt);
-    else if (repaintEntireCanvas)
-        didDrawEntireCanvas();
-    else {
+    didDraw(repaintEntireCanvas, [&] {
         auto dirtyRect = path.fastBoundingRect();
         inflateStrokeRect(dirtyRect);
-        didDraw(dirtyRect);
-    }
+        return dirtyRect;
+    });
 }
 
 void CanvasRenderingContext2DBase::clipInternal(const Path& path, CanvasFillRule windingRule)
@@ -1270,12 +1263,7 @@
     } else
         c->fillRect(rect);
 
-    if (isEntireBackingStoreDirty())
-        didDraw(std::nullopt);
-    else if (repaintEntireCanvas)
-        didDrawEntireCanvas();
-    else
-        didDraw(rect);
+    didDraw(repaintEntireCanvas, rect);
 }
 
 void CanvasRenderingContext2DBase::strokeRect(double x, double y, double width, double height)
@@ -1310,15 +1298,11 @@
     } else
         c->strokeRect(rect, state().lineWidth);
 
-    if (isEntireBackingStoreDirty())
-        didDraw(std::nullopt);
-    else if (repaintEntireCanvas)
-        didDrawEntireCanvas();
-    else {
+    didDraw(repaintEntireCanvas, [&] {
         auto boundingRect = rect;
         boundingRect.inflate(state().lineWidth / 2);
-        didDraw(boundingRect);
-    }
+        return boundingRect;
+    });
 }
 
 void CanvasRenderingContext2DBase::setShadow(float width, float height, float blur, const String& colorString, std::optional<float> alpha)
@@ -1582,12 +1566,7 @@
     } else
         c->drawImageForCanvas(*image, normalizedDstRect, normalizedSrcRect, options, colorSpace());
 
-    if (isEntireBackingStoreDirty())
-        didDraw(std::nullopt);
-    else if (repaintEntireCanvas)
-        didDrawEntireCanvas();
-    else
-        didDraw(normalizedDstRect);
+    didDraw(repaintEntireCanvas, normalizedDstRect);
 
     if (image->drawsSVGImage())
         image->setImageObserver(observer);
@@ -1644,12 +1623,7 @@
     } else
         c->drawImageBuffer(*buffer, dstRect, srcRect, { state().globalComposite, state().globalBlend });
 
-    if (isEntireBackingStoreDirty())
-        didDraw(std::nullopt);
-    else if (repaintEntireCanvas)
-        didDrawEntireCanvas();
-    else
-        didDraw(dstRect);
+    didDraw(repaintEntireCanvas, dstRect);
 
     return { };
 }
@@ -1676,17 +1650,14 @@
 
     checkOrigin(&video);
 
+    bool repaintEntireCanvas = rectContainsCanvas(dstRect);
+
 #if USE(CG)
     if (c->hasPlatformContext()) {
         if (auto image = video.nativeImageForCurrentTime()) {
             c->drawNativeImage(*image, FloatSize(video.videoWidth(), video.videoHeight()), dstRect, srcRect);
 
-            if (isEntireBackingStoreDirty())
-                didDraw(std::nullopt);
-            else if (rectContainsCanvas(dstRect))
-                didDrawEntireCanvas();
-            else
-                didDraw(dstRect);
+            didDraw(repaintEntireCanvas, dstRect);
 
             return { };
         }
@@ -1701,10 +1672,7 @@
     video.paintCurrentFrameInContext(*c, FloatRect(FloatPoint(), size(video)));
     stateSaver.restore();
 
-    if (isEntireBackingStoreDirty())
-        didDraw(std::nullopt);
-    else
-        didDraw(dstRect);
+    didDraw(repaintEntireCanvas, dstRect);
 
     return { };
 }
@@ -1752,12 +1720,7 @@
     } else
         c->drawImageBuffer(*buffer, dstRect, srcRect, { state().globalComposite, state().globalBlend });
 
-    if (isEntireBackingStoreDirty())
-        didDraw(std::nullopt);
-    else if (repaintEntireCanvas)
-        didDrawEntireCanvas();
-    else
-        didDraw(dstRect);
+    didDraw(repaintEntireCanvas, dstRect);
 
     return { };
 }
@@ -2093,6 +2056,24 @@
     }
 }
 
+void CanvasRenderingContext2DBase::didDraw(bool entireCanvas, const FloatRect& rect)
+{
+    return didDraw(entireCanvas, [&] {
+        return rect;
+    });
+}
+
+template<typename RectProvider>
+void CanvasRenderingContext2DBase::didDraw(bool entireCanvas, RectProvider rectProvider)
+{
+    if (isEntireBackingStoreDirty())
+        didDraw(std::nullopt);
+    else if (entireCanvas)
+        didDrawEntireCanvas();
+    else
+        didDraw(rectProvider());
+}
+
 void CanvasRenderingContext2DBase::clearAccumulatedDirtyRect()
 {
     m_dirtyRect = { };
@@ -2533,12 +2514,7 @@
     } else
         fontProxy.drawBidiText(*c, textRun, location, FontCascade::UseFallbackIfFontNotReady);
 
-    if (isEntireBackingStoreDirty())
-        didDraw(std::nullopt);
-    else if (repaintEntireCanvas)
-        didDrawEntireCanvas();
-    else
-        didDraw(textRect);
+    didDraw(repaintEntireCanvas, textRect);
 }
 
 Ref<TextMetrics> CanvasRenderingContext2DBase::measureTextInternal(const String& text)

Modified: trunk/Source/WebCore/html/canvas/CanvasRenderingContext2DBase.h (285333 => 285334)


--- trunk/Source/WebCore/html/canvas/CanvasRenderingContext2DBase.h	2021-11-05 04:06:12 UTC (rev 285333)
+++ trunk/Source/WebCore/html/canvas/CanvasRenderingContext2DBase.h	2021-11-05 04:52:41 UTC (rev 285334)
@@ -324,6 +324,8 @@
     };
     void didDraw(std::optional<FloatRect>, OptionSet<DidDrawOption> = { DidDrawOption::ApplyTransform, DidDrawOption::ApplyShadow, DidDrawOption::ApplyClip });
     void didDrawEntireCanvas();
+    void didDraw(bool entireCanvas, const FloatRect&);
+    template<typename RectProvider> void didDraw(bool entireCanvas, RectProvider);
 
     void paintRenderingResultsToCanvas() override;
     bool needsPreparationForDisplay() const final;
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