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

Go to the source code of this file.

Functions

 REG_FIDDLE (Pixmap_isOpaque, 256, 256, true, 0)
 

Function Documentation

◆ REG_FIDDLE()

REG_FIDDLE ( Pixmap_isOpaque  ,
256  ,
256  ,
true  ,
 
)

Definition at line 5 of file Pixmap_isOpaque.cpp.

5 {
6void draw(SkCanvas* canvas) {
7 std::vector<uint32_t> pixels;
8 const int height = 2;
9 const int width = 2;
10 pixels.resize(height * width * 4);
11 SkPixmap pixmap(SkImageInfo::Make(width, height, kN32_SkColorType,
12 kPremul_SkAlphaType), (const void*) &pixels.front(), width * 4);
13 for (int index = 0; index < 2; ++index) {
14 pixmap.erase(0x00000000);
15 SkDebugf("isOpaque: %s\n", pixmap.isOpaque() ? "true" : "false");
16 pixmap.erase(0xFFFFFFFF);
17 SkDebugf("isOpaque: %s\n", pixmap.isOpaque() ? "true" : "false");
18 pixmap.reset(pixmap.info().makeAlphaType(kOpaque_SkAlphaType),
19 (const void*) &pixels.front(), width * 4);
20 }
21}
22} // 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
int32_t height
int32_t width
static SkImageInfo Make(int width, int height, SkColorType ct, SkAlphaType at)