skia2/docs/examples/Image_peekPixels.cpp

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#if 0 // Disabled until updated to use current API.
// 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 "fiddle/examples.h"
// HASH=900c0eab8dfdecd8301ed5be95887f8e
REG_FIDDLE(Image_peekPixels, 256, 256, true, 0) {
void draw(SkCanvas* canvas) {
SkBitmap bitmap;
bitmap.allocPixels(SkImageInfo::MakeN32Premul(12, 11));
SkCanvas offscreen(bitmap);
offscreen.clear(SK_ColorWHITE);
SkPaint paint;
offscreen.drawString("%", 1, 10, paint);
sk_sp<SkImage> image = SkImage::MakeFromBitmap(bitmap);
SkPixmap pixmap;
if (image->peekPixels(&pixmap)) {
const SkPMColor* pixels = pixmap.addr32();
SkPMColor pmWhite = pixels[0];
for (int y = 0; y < image->height(); ++y) {
for (int x = 0; x < image->width(); ++x) {
SkDebugf("%c", *pixels++ == pmWhite ? '-' : 'x');
}
SkDebugf("\n");
}
}
}
} // END FIDDLE
#endif // Disabled until updated to use current API.