Flutter Engine
The Flutter Engine
Functions
Pixmap_writable_addr16.cpp File Reference
#include "tools/fiddle/examples.h"

Go to the source code of this file.

Functions

 REG_FIDDLE (Pixmap_writable_addr16, 256, 64, false, 0)
 

Function Documentation

◆ REG_FIDDLE()

REG_FIDDLE ( Pixmap_writable_addr16  ,
256  ,
64  ,
false  ,
 
)

Definition at line 4 of file Pixmap_writable_addr16.cpp.

4 {
5void draw(SkCanvas* canvas) {
6 uint16_t storage[][5] = {{ 0xCABF, 0xDABE, 0xCA9D, 0xC96C, 0xA39B },
7 { 0xACEE, 0xA87C, 0x893A, 0x4779, 0x8708 },
8 { 0x4B7C, 0x255B, 0x2559, 0x2557, 0x4656 },
9 { 0x9099, 0x8128, 0x2557, 0x4124, 0x3323 },
10 { 0x7547, 0x5505, 0x4434, 0x2012, 0x0000 }};
12 SkPixmap pixmap(imageInfo, storage[0], sizeof(storage) / 5);
14 bitmap.installPixels(pixmap);
15 canvas->scale(10, 10);
16 canvas->drawImage(bitmap.asImage(), 0, 0);
17 *pixmap.writable_addr16(2, 2) = 0x000F;
18 bitmap.installPixels(pixmap);
19 canvas->drawImage(bitmap.asImage(), 10, 0);
20}
21} // END FIDDLE
@ kPremul_SkAlphaType
pixel components are premultiplied by alpha
Definition: SkAlphaType.h:29
@ kARGB_4444_SkColorType
pixel with 4 bits for alpha, red, green, blue; in 16-bit word
Definition: SkColorType.h:23
static void draw(SkCanvas *canvas, SkRect &target, int x, int y)
Definition: aaclip.cpp:27
void scale(SkScalar sx, SkScalar sy)
Definition: SkCanvas.cpp:1289
void drawImage(const SkImage *image, SkScalar left, SkScalar top)
Definition: SkCanvas.h:1528
Definition: bitmap.py:1
static SkImageInfo Make(int width, int height, SkColorType ct, SkAlphaType at)