Title: [224743] trunk/Source/WebCore
Revision
224743
Author
[email protected]
Date
2017-11-12 23:32:03 -0800 (Sun, 12 Nov 2017)

Log Message

[Cairo] Move line, miter operations in GraphicsContextCairo to CairoOperations
https://bugs.webkit.org/show_bug.cgi?id=179597

Reviewed by Carlos Garcia Campos.

Move operations that adjust line cap, line dash, line join and miter
limit to the CairoOperations file. This limits operations to only work
with a PlatformContextCairo object, along with any required parameter,
and will help with future work in this area.

No new tests -- no change in behavior.

* platform/graphics/cairo/CairoOperations.cpp:
(WebCore::Cairo::setLineCap):
(WebCore::Cairo::setLineDash):
(WebCore::Cairo::setLineJoin):
(WebCore::Cairo::setMiterLimit):
* platform/graphics/cairo/CairoOperations.h:
* platform/graphics/cairo/GraphicsContextCairo.cpp:
(WebCore::GraphicsContext::setLineCap):
(WebCore::GraphicsContext::setLineDash):
(WebCore::GraphicsContext::setLineJoin):
(WebCore::GraphicsContext::setMiterLimit):
(WebCore::isDashArrayAllZero): Deleted.

Modified Paths

Diff

Modified: trunk/Source/WebCore/ChangeLog (224742 => 224743)


--- trunk/Source/WebCore/ChangeLog	2017-11-13 06:54:44 UTC (rev 224742)
+++ trunk/Source/WebCore/ChangeLog	2017-11-13 07:32:03 UTC (rev 224743)
@@ -1,3 +1,30 @@
+2017-11-12  Zan Dobersek  <[email protected]>
+
+        [Cairo] Move line, miter operations in GraphicsContextCairo to CairoOperations
+        https://bugs.webkit.org/show_bug.cgi?id=179597
+
+        Reviewed by Carlos Garcia Campos.
+
+        Move operations that adjust line cap, line dash, line join and miter
+        limit to the CairoOperations file. This limits operations to only work
+        with a PlatformContextCairo object, along with any required parameter,
+        and will help with future work in this area.
+
+        No new tests -- no change in behavior.
+
+        * platform/graphics/cairo/CairoOperations.cpp:
+        (WebCore::Cairo::setLineCap):
+        (WebCore::Cairo::setLineDash):
+        (WebCore::Cairo::setLineJoin):
+        (WebCore::Cairo::setMiterLimit):
+        * platform/graphics/cairo/CairoOperations.h:
+        * platform/graphics/cairo/GraphicsContextCairo.cpp:
+        (WebCore::GraphicsContext::setLineCap):
+        (WebCore::GraphicsContext::setLineDash):
+        (WebCore::GraphicsContext::setLineJoin):
+        (WebCore::GraphicsContext::setMiterLimit):
+        (WebCore::isDashArrayAllZero): Deleted.
+
 2017-11-12  Chris Dumez  <[email protected]>
 
         [Service Workers] Activate algorithm says terminate the active worker if it exists

Modified: trunk/Source/WebCore/platform/graphics/cairo/CairoOperations.cpp (224742 => 224743)


--- trunk/Source/WebCore/platform/graphics/cairo/CairoOperations.cpp	2017-11-13 06:54:44 UTC (rev 224742)
+++ trunk/Source/WebCore/platform/graphics/cairo/CairoOperations.cpp	2017-11-13 07:32:03 UTC (rev 224743)
@@ -45,6 +45,53 @@
 namespace WebCore {
 namespace Cairo {
 
+void setLineCap(PlatformContextCairo& platformContext, LineCap lineCap)
+{
+    cairo_line_cap_t cairoCap;
+    switch (lineCap) {
+    case ButtCap:
+        cairoCap = CAIRO_LINE_CAP_BUTT;
+        break;
+    case RoundCap:
+        cairoCap = CAIRO_LINE_CAP_ROUND;
+        break;
+    case SquareCap:
+        cairoCap = CAIRO_LINE_CAP_SQUARE;
+        break;
+    }
+    cairo_set_line_cap(platformContext.cr(), cairoCap);
+}
+
+void setLineDash(PlatformContextCairo& platformContext, const DashArray& dashes, float dashOffset)
+{
+    if (std::all_of(dashes.begin(), dashes.end(), [](auto& dash) { return !dash; }))
+        cairo_set_dash(platformContext.cr(), 0, 0, 0);
+    else
+        cairo_set_dash(platformContext.cr(), dashes.data(), dashes.size(), dashOffset);
+}
+
+void setLineJoin(PlatformContextCairo& platformContext, LineJoin lineJoin)
+{
+    cairo_line_join_t cairoJoin;
+    switch (lineJoin) {
+    case MiterJoin:
+        cairoJoin = CAIRO_LINE_JOIN_MITER;
+        break;
+    case RoundJoin:
+        cairoJoin = CAIRO_LINE_JOIN_ROUND;
+        break;
+    case BevelJoin:
+        cairoJoin = CAIRO_LINE_JOIN_BEVEL;
+        break;
+    }
+    cairo_set_line_join(platformContext.cr(), cairoJoin);
+}
+
+void setMiterLimit(PlatformContextCairo& platformContext, float miterLimit)
+{
+    cairo_set_miter_limit(platformContext.cr(), miterLimit);
+}
+
 void clip(PlatformContextCairo& platformContext, const FloatRect& rect)
 {
     cairo_t* cr = platformContext.cr();

Modified: trunk/Source/WebCore/platform/graphics/cairo/CairoOperations.h (224742 => 224743)


--- trunk/Source/WebCore/platform/graphics/cairo/CairoOperations.h	2017-11-13 06:54:44 UTC (rev 224742)
+++ trunk/Source/WebCore/platform/graphics/cairo/CairoOperations.h	2017-11-13 07:32:03 UTC (rev 224743)
@@ -34,6 +34,7 @@
 
 #if USE(CAIRO)
 
+#include "DashArray.h"
 #include "GraphicsTypes.h"
 
 namespace WebCore {
@@ -45,6 +46,11 @@
 
 namespace Cairo {
 
+void setLineCap(PlatformContextCairo&, LineCap);
+void setLineDash(PlatformContextCairo&, const DashArray&, float);
+void setLineJoin(PlatformContextCairo&, LineJoin);
+void setMiterLimit(PlatformContextCairo&, float);
+
 void clip(PlatformContextCairo&, const FloatRect&);
 void clipOut(PlatformContextCairo&, const FloatRect&);
 void clipOut(PlatformContextCairo&, const Path&);

Modified: trunk/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp (224742 => 224743)


--- trunk/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp	2017-11-13 06:54:44 UTC (rev 224742)
+++ trunk/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp	2017-11-13 07:32:03 UTC (rev 224743)
@@ -930,30 +930,10 @@
         return;
     }
 
-    cairo_line_cap_t cairoCap = CAIRO_LINE_CAP_BUTT;
-    switch (lineCap) {
-    case ButtCap:
-        // no-op
-        break;
-    case RoundCap:
-        cairoCap = CAIRO_LINE_CAP_ROUND;
-        break;
-    case SquareCap:
-        cairoCap = CAIRO_LINE_CAP_SQUARE;
-        break;
-    }
-    cairo_set_line_cap(platformContext()->cr(), cairoCap);
+    ASSERT(hasPlatformContext());
+    Cairo::setLineCap(*platformContext(), lineCap);
 }
 
-static inline bool isDashArrayAllZero(const DashArray& dashes)
-{
-    for (auto& dash : dashes) {
-        if (dash)
-            return false;
-    }
-    return true;
-}
-
 void GraphicsContext::setLineDash(const DashArray& dashes, float dashOffset)
 {
     if (paintingDisabled())
@@ -964,10 +944,8 @@
         return;
     }
 
-    if (isDashArrayAllZero(dashes))
-        cairo_set_dash(platformContext()->cr(), 0, 0, 0);
-    else
-        cairo_set_dash(platformContext()->cr(), dashes.data(), dashes.size(), dashOffset);
+    ASSERT(hasPlatformContext());
+    Cairo::setLineDash(*platformContext(), dashes, dashOffset);
 }
 
 void GraphicsContext::setLineJoin(LineJoin lineJoin)
@@ -980,19 +958,8 @@
         return;
     }
 
-    cairo_line_join_t cairoJoin = CAIRO_LINE_JOIN_MITER;
-    switch (lineJoin) {
-    case MiterJoin:
-        // no-op
-        break;
-    case RoundJoin:
-        cairoJoin = CAIRO_LINE_JOIN_ROUND;
-        break;
-    case BevelJoin:
-        cairoJoin = CAIRO_LINE_JOIN_BEVEL;
-        break;
-    }
-    cairo_set_line_join(platformContext()->cr(), cairoJoin);
+    ASSERT(hasPlatformContext());
+    Cairo::setLineJoin(*platformContext(), lineJoin);
 }
 
 void GraphicsContext::setMiterLimit(float miter)
@@ -1006,7 +973,8 @@
         return;
     }
 
-    cairo_set_miter_limit(platformContext()->cr(), miter);
+    ASSERT(hasPlatformContext());
+    Cairo::setMiterLimit(*platformContext(), miter);
 }
 
 void GraphicsContext::setPlatformAlpha(float alpha)
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