d88c2e8e09
Change-Id: I9a6b2780cfdd91cdd16d5a08eb9ba1214492cb7e Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201982 Commit-Queue: Hal Canary <halcanary@google.com> Reviewed-by: Hal Canary <halcanary@google.com>
29 lines
1.2 KiB
C++
29 lines
1.2 KiB
C++
// Copyright 2019 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "fiddle/examples.h"
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// HASH=dd92db963af190e849894038f39b598a
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REG_FIDDLE(Canvas_copy_const_SkBitmap, 256, 256, true, 0) {
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void draw(SkCanvas* ) {
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SkBitmap bitmap;
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// create a bitmap 5 wide and 11 high
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bitmap.allocPixels(SkImageInfo::MakeN32Premul(5, 11));
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SkCanvas canvas(bitmap);
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canvas.clear(SK_ColorWHITE); // white is Unpremultiplied, in ARGB order
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SkPixmap pixmap; // provides guaranteed access to the drawn pixels
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if (!canvas.peekPixels(&pixmap)) {
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SkDebugf("peekPixels should never fail.\n");
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}
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const SkPMColor* pixels = pixmap.addr32(); // points to top-left of bitmap
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SkPMColor pmWhite = pixels[0]; // the Premultiplied format may vary
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SkPaint paint; // by default, draws black, 12 point text
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SkFont font;
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canvas.drawString("!", 1, 10, font, paint); // 1 char at baseline (1, 10)
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for (int y = 0; y < bitmap.height(); ++y) {
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for (int x = 0; x < bitmap.width(); ++x) {
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SkDebugf("%c", *pixels++ == pmWhite ? '-' : 'x');
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}
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SkDebugf("\n");
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}
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}
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} // END FIDDLE
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