skia2/docs/examples/Bitmap_notifyPixelsChanged.cpp
Mike Reed e1f72f9392 drawBitmap is deprecated
Bug: skia:11216
Change-Id: I15f7723e70cb6b252bf313530fd6d783a7635a00
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360777
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2021-01-27 23:18:21 +00:00

20 lines
838 B
C++

// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
// HASH=8f463ed17b0ed4fb9c503a0ec71706f9
REG_FIDDLE(Bitmap_notifyPixelsChanged, 256, 20, false, 0) {
void draw(SkCanvas* canvas) {
SkBitmap bitmap;
bitmap.setInfo(SkImageInfo::Make(1, 1, kRGBA_8888_SkColorType, kOpaque_SkAlphaType));
bitmap.allocPixels();
bitmap.eraseColor(SK_ColorRED);
canvas->scale(16, 16);
canvas->drawImage(bitmap.asImage(), 0, 0);
*(SkPMColor*) bitmap.getPixels() = SkPreMultiplyColor(SK_ColorBLUE);
canvas->drawImage(bitmap.asImage(), 2, 0);
bitmap.notifyPixelsChanged();
*(SkPMColor*) bitmap.getPixels() = SkPreMultiplyColor(SK_ColorGREEN);
canvas->drawImage(bitmap.asImage(), 4, 0);
}
} // END FIDDLE