Pixmap_writable_addr.cpp File Reference

#include "tools/fiddle/examples.h"

Go to the source code of this file.

Functions
	REG_FIDDLE (Pixmap_writable_addr, 256, 256, true, 0)

Function Documentation

REG_FIDDLE()

REG_FIDDLE	(	Pixmap_writable_addr	,
		256	,
		256	,
		true	,
		0
	)

Definition at line 4 of file Pixmap_writable_addr.cpp.

                                                    {
void draw(SkCanvas* canvas) {
    const int w = 4;
    const int h = 4;
    SkPMColor storage[w * h * 4];
    SkPixmap pixmap(SkImageInfo::MakeN32(w, h, kPremul_SkAlphaType), storage, w * 4);
    SkDebugf("pixmap.writable_addr() %c= (void *)storage\n",
              pixmap.writable_addr()  == (void *)storage ? '=' : '!');
    pixmap.erase(0x00000000);
    *(SkPMColor*)pixmap.writable_addr() = 0xFFFFFFFF;
    SkDebugf("pixmap.getColor(0, 1) %c= 0x00000000\n",
              pixmap.getColor(0, 1)  == 0x00000000 ? '=' : '!');
    SkDebugf("pixmap.getColor(0, 0) %c= 0xFFFFFFFF\n",
              pixmap.getColor(0, 0)  == 0xFFFFFFFF ? '=' : '!');
}
}  // END FIDDLE