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Bitmap_ComputeIsOpaque.cpp File Reference
#include "tools/fiddle/examples.h"

Go to the source code of this file.

Functions

 REG_FIDDLE (Bitmap_ComputeIsOpaque, 256, 256, true, 0)
 

Function Documentation

◆ REG_FIDDLE()

REG_FIDDLE ( Bitmap_ComputeIsOpaque  ,
256  ,
256  ,
true  ,
 
)

Definition at line 4 of file Bitmap_ComputeIsOpaque.cpp.

4 {
5void draw(SkCanvas* canvas) {
7 bitmap.setInfo(SkImageInfo::Make(2, 2, kN32_SkColorType, kPremul_SkAlphaType));
8 for (int index = 0; index < 2; ++index) {
9 bitmap.allocPixels();
10 bitmap.eraseColor(0x00000000);
11 SkDebugf("computeIsOpaque: %s\n", SkBitmap::ComputeIsOpaque(bitmap) ? "true" : "false");
12 bitmap.eraseColor(0xFFFFFFFF);
13 SkDebugf("computeIsOpaque: %s\n", SkBitmap::ComputeIsOpaque(bitmap) ? "true" : "false");
14 bitmap.setInfo(bitmap.info().makeAlphaType(kOpaque_SkAlphaType));
15 }
16}
17} // END FIDDLE
@ kOpaque_SkAlphaType
pixel is opaque
Definition: SkAlphaType.h:28
@ kPremul_SkAlphaType
pixel components are premultiplied by alpha
Definition: SkAlphaType.h:29
void SK_SPI SkDebugf(const char format[],...) SK_PRINTF_LIKE(1
static void draw(SkCanvas *canvas, SkRect &target, int x, int y)
Definition: aaclip.cpp:27
static bool ComputeIsOpaque(const SkBitmap &bm)
Definition: SkBitmap.h:358
Definition: bitmap.py:1
static SkImageInfo Make(int width, int height, SkColorType ct, SkAlphaType at)