Pixmap_writable_addr8.cpp File Reference

#include "tools/fiddle/examples.h"

Go to the source code of this file.

Functions
	REG_FIDDLE (Pixmap_writable_addr8, 256, 64, false, 0)

Function Documentation

REG_FIDDLE()

REG_FIDDLE	(	Pixmap_writable_addr8	,
		256	,
		64	,
		false	,
		0
	)

Definition at line 5 of file Pixmap_writable_addr8.cpp.

                                                     {
void draw(SkCanvas* canvas) {
    uint8_t storage[][5] = {{ 0,   0,  64,   0,  0},
                            { 0, 128, 255, 128,  0},
                            {64, 255, 255, 255, 64},
                            { 0, 128, 255, 128,  0},
                            { 0,   0,  64,   0,  0}};
    SkImageInfo imageInfo = SkImageInfo::Make(5, 5, kGray_8_SkColorType, kPremul_SkAlphaType);
    SkPixmap pixmap(imageInfo, storage[0], 5);
    SkBitmap bitmap;
    bitmap.installPixels(pixmap);
    canvas->scale(10, 10);
    canvas->drawImage(bitmap.asImage(), 0, 0);
    *pixmap.writable_addr8(2, 2) = 0;
//  bitmap.installPixels(pixmap);      // uncomment to fix on GPU
    canvas->drawImage(bitmap.asImage(), 10, 0);
}
}  // END FIDDLE