Start enabling platform_canvas_unittests on Linux

skia/ext/platform_canvas_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // TODO(awalker): clean up the const/non-const reference handling in this test
 
 #include "skia/ext/platform_canvas.h"
 
 #include <stdint.h>
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "skia/ext/platform_device.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkColorPriv.h"
 #include "third_party/skia/include/core/SkPixelRef.h"
 
 #if defined(OS_MACOSX)
 #import <ApplicationServices/ApplicationServices.h>
 #endif
 
 #if !defined(OS_WIN)
 #include <unistd.h>
 #endif
 
+#if defined(USE_CAIRO)
+#if defined(OS_OPENBSD)
+#include <cairo.h>
+#else
+#include <cairo/cairo.h>
+#endif  // OS_OPENBSD
+#endif  // USE_CAIRO
+
 namespace skia {
 
 namespace {
 
 #if defined(OS_WIN)
 void MakeOpaque(SkCanvas* canvas, int x, int y, int width, int height) {
   if (width <= 0 || height <= 0)
     return;
 
   SkRect rect;
@@ skipping 70 matching lines @@
   return true;
 }
 #endif
 
 // Checks whether there is a white canvas with a black square at the given
 // location in pixels (not in the canvas coordinate system).
 bool VerifyBlackRect(const SkCanvas& canvas, int x, int y, int w, int h) {
   return VerifyRect(canvas, SK_ColorWHITE, SK_ColorBLACK, x, y, w, h);
 }
 
-#if !defined(USE_AURA)  // http://crbug.com/154358
 // Check that every pixel in the canvas is a single color.
 bool VerifyCanvasColor(const SkCanvas& canvas, uint32_t canvas_color) {
   return VerifyRect(canvas, canvas_color, 0, 0, 0, 0, 0);
 }
-#endif  // !defined(USE_AURA)
 
 #if defined(OS_WIN)
 void DrawNativeRect(SkCanvas& canvas, int x, int y, int w, int h) {
   skia::ScopedPlatformPaint scoped_platform_paint(&canvas);
   HDC dc = scoped_platform_paint.GetPlatformSurface();
 
   RECT inner_rc;
   inner_rc.left = x;
   inner_rc.top = y;
   inner_rc.right = x + w;
   inner_rc.bottom = y + h;
   FillRect(dc, &inner_rc, reinterpret_cast<HBRUSH>(GetStockObject(BLACK_BRUSH)));
 }
 #elif defined(OS_MACOSX)
 void DrawNativeRect(SkCanvas& canvas, int x, int y, int w, int h) {
   skia::ScopedPlatformPaint scoped_platform_paint(&canvas);
   CGContextRef context = scoped_platform_paint.GetPlatformSurface();
 
   CGRect inner_rc = CGRectMake(x, y, w, h);
   // RGBA opaque black
   CGColorRef black = CGColorCreateGenericRGB(0.0, 0.0, 0.0, 1.0);
   CGContextSetFillColorWithColor(context, black);
   CGColorRelease(black);
   CGContextFillRect(context, inner_rc);
 }
+#elif defined(USE_CAIRO)
+void DrawNativeRect(SkCanvas& canvas, int x, int y, int w, int h) {
+  skia::ScopedPlatformPaint scoped_platform_paint(&canvas);
+  cairo_t* context = scoped_platform_paint.GetPlatformSurface();
+
+  cairo_rectangle(context, x, y, w, h);
+  cairo_set_source_rgb(context, 0.0, 0.0, 0.0);
+  cairo_fill(context);
+}
 #else
 void DrawNativeRect(SkCanvas& canvas, int x, int y, int w, int h) {
   NOTIMPLEMENTED();
 }
 #endif
 
 // Clips the contents of the canvas to the given rectangle. This will be
 // intersected with any existing clip.
 void AddClip(SkCanvas& canvas, int x, int y, int w, int h) {
   SkRect rect;
@@ skipping 58 matching lines @@
 
   // Make a layer and fill it completely to make sure that the bounds are
   // correct.
   {
     LayerSaver layer(*canvas, kLayerX, kLayerY, kLayerW, kLayerH);
     canvas->drawColor(SK_ColorBLACK);
   }
   EXPECT_TRUE(VerifyBlackRect(*canvas, kLayerX, kLayerY, kLayerW, kLayerH));
 }
 
-#if !defined(USE_AURA)  // http://crbug.com/154358
 // Test native clipping.
 TEST(PlatformCanvas, ClipRegion) {
   // Initialize a white canvas
   sk_sp<SkCanvas> canvas(CreatePlatformCanvas(16, 16, true));
   canvas->drawColor(SK_ColorWHITE);
   EXPECT_TRUE(VerifyCanvasColor(*canvas, SK_ColorWHITE));
 
   // Test that initially the canvas has no clip region, by filling it
   // with a black rectangle.
   // Note: Don't use LayerSaver, since internally it sets a clip region.
   DrawNativeRect(*canvas, 0, 0, 16, 16);
   EXPECT_TRUE(VerifyCanvasColor(*canvas, SK_ColorBLACK));
 
   // Test that intersecting disjoint clip rectangles sets an empty clip region
   canvas->drawColor(SK_ColorWHITE);
   EXPECT_TRUE(VerifyCanvasColor(*canvas, SK_ColorWHITE));
   {
     LayerSaver layer(*canvas, 0, 0, 16, 16);
     AddClip(*canvas, 2, 3, 4, 5);
     AddClip(*canvas, 4, 9, 10, 10);
     DrawNativeRect(*canvas, 0, 0, 16, 16);
   }
   EXPECT_TRUE(VerifyCanvasColor(*canvas, SK_ColorWHITE));
 }
-#endif  // !defined(USE_AURA)
 
 // Test the layers get filled properly by native rendering.
 TEST(PlatformCanvas, FillLayer) {
   // Create the canvas initialized to opaque white.
   sk_sp<SkCanvas> canvas(CreatePlatformCanvas(16, 16, true));
 
   // Make a layer and fill it completely to make sure that the bounds are
   // correct.
   canvas->drawColor(SK_ColorWHITE);
   {
@@ skipping 143 matching lines @@
   }
   canvas->restore();
   EXPECT_TRUE(VerifyRoundedRect(*canvas, SK_ColorWHITE, SK_ColorBLACK,
                                 kInnerX + 1, kInnerY + 1, kInnerW, kInnerH));
 #endif
 }
 
 #endif  // #if !defined(USE_AURA)
 
 }  // namespace skia