Optionally clear PlatformCanvas instances.

skia/ext/platform_canvas_unittest.cc

Index: skia/ext/platform_canvas_unittest.cc
===================================================================
--- skia/ext/platform_canvas_unittest.cc	(revision 123041)
+++ skia/ext/platform_canvas_unittest.cc	(working copy)
@@ -194,6 +194,7 @@
 TEST(PlatformCanvas, SkLayer) {
   // Create the canvas initialized to opaque white.
   PlatformCanvas canvas(16, 16, true);
+  canvas.drawARGB(0, 0, 0, 0);

[alokp, 2012/03/01 17:09:02]

eraseARGB? and everywhere else.

[Jeff Timanus, 2012/03/01 18:35:49]

I was confused by this too.

SkCanvas (& PlatformCanvas) expose drawARGB.
SkDevice exposes clear(...).
SkBitmap exposes eraseARGB(...).

All of these routines perform the same operation.

   canvas.drawColor(SK_ColorWHITE);
 
   // Make a layer and fill it completely to make sure that the bounds are
@@ -209,6 +210,7 @@
 TEST(PlatformCanvas, ClipRegion) {
   // Initialize a white canvas
   PlatformCanvas canvas(16, 16, true);
+  canvas.drawARGB(0, 0, 0, 0);
   canvas.drawColor(SK_ColorWHITE);
   EXPECT_TRUE(VerifyCanvasColor(canvas, SK_ColorWHITE));
 
@@ -234,6 +236,7 @@
 TEST(PlatformCanvas, FillLayer) {
   // Create the canvas initialized to opaque white.
   PlatformCanvas canvas(16, 16, true);
+  canvas.drawARGB(0, 0, 0, 0);
 
   // Make a layer and fill it completely to make sure that the bounds are
   // correct.
@@ -291,6 +294,7 @@
 TEST(PlatformCanvas, TranslateLayer) {
   // Create the canvas initialized to opaque white.
   PlatformCanvas canvas(16, 16, true);
+  canvas.drawARGB(0, 0, 0, 0);
 
   // Make a layer and fill it completely to make sure that the bounds are
   // correct.