Paint_nothingToDraw.cpp File Reference

#include "tools/fiddle/examples.h"

Go to the source code of this file.

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

Function Documentation

REG_FIDDLE()

REG_FIDDLE	(	Paint_nothingToDraw	,
		256	,
		256	,
		true	,
		0
	)

Definition at line 5 of file Paint_nothingToDraw.cpp.

                                                   {
void draw(SkCanvas* canvas) {
    auto debugster = [](const char* prefix, const SkPaint& p) -> void {
        SkDebugf("%s nothing to draw: %s\n", prefix,
                 p.nothingToDraw() ? "true" : "false");
    };
    SkPaint paint;
    debugster("initial", paint);
    paint.setBlendMode(SkBlendMode::kDst);
    debugster("blend dst", paint);
    paint.setBlendMode(SkBlendMode::kSrcOver);
    debugster("blend src over", paint);
    paint.setAlpha(0);
    debugster("alpha 0", paint);
}
}  // END FIDDLE