Flutter Engine
The Flutter Engine
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Surface_readPixels_3.cpp File Reference
#include "tools/fiddle/examples.h"

Go to the source code of this file.

Functions

 REG_FIDDLE (Surface_readPixels_3, 256, 256, false, 0)
 

Function Documentation

◆ REG_FIDDLE()

REG_FIDDLE ( Surface_readPixels_3  ,
256  ,
256  ,
false  ,
 
)

Definition at line 4 of file Surface_readPixels_3.cpp.

4 {
5void draw(SkCanvas* canvas) {
7 auto surfCanvas = surf->getCanvas();
8 surfCanvas->clear(SK_ColorGREEN);
10 surfCanvas->drawOval({2, 10, 58, 54}, paint);
13 bitmap.setInfo(info);
14 bitmap.allocPixels();
15 for (int x : { 32, -32 } ) {
16 for (int y : { 32, -32 } ) {
17 surf->readPixels(bitmap, x, y);
18 }
19 }
20 canvas->drawImage(bitmap.asImage(), 0, 0);
21}
22} // END FIDDLE
static void info(const char *fmt,...) SK_PRINTF_LIKE(1
Definition: DM.cpp:213
@ kPremul_SkAlphaType
pixel components are premultiplied by alpha
Definition: SkAlphaType.h:29
@ kBGRA_8888_SkColorType
pixel with 8 bits for blue, green, red, alpha; in 32-bit word
Definition: SkColorType.h:26
constexpr SkColor SK_ColorGREEN
Definition: SkColor.h:131
static void draw(SkCanvas *canvas, SkRect &target, int x, int y)
Definition: aaclip.cpp:27
void drawImage(const SkImage *image, SkScalar left, SkScalar top)
Definition: SkCanvas.h:1528
const Paint & paint
Definition: color_source.cc:38
double y
double x
SK_API sk_sp< SkSurface > Raster(const SkImageInfo &imageInfo, size_t rowBytes, const SkSurfaceProps *surfaceProps)
Definition: bitmap.py:1
static SkImageInfo MakeN32Premul(int width, int height)
static SkImageInfo Make(int width, int height, SkColorType ct, SkAlphaType at)