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- /*
- * Copyright 2013 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "gm/gm.h"
- #include "include/core/SkBitmap.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkImageInfo.h"
- #include "include/core/SkPixmap.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkTypes.h"
- #include "tools/Resources.h"
- #include "tools/ToolUtils.h"
- namespace {
- /**
- * Test copying an image from 8888 to 4444.
- */
- class CopyTo4444GM : public skiagm::GM {
- SkString onShortName() override { return SkString("copyTo4444"); }
- SkISize onISize() override { return {360, 180}; }
- DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
- SkBitmap bm, bm4444;
- if (!GetResourceAsBitmap("images/dog.jpg", &bm)) {
- *errorMsg = "Could not decode the file. Did you forget to set the resourcePath?";
- return DrawResult::kFail;
- }
- canvas->drawBitmap(bm, 0, 0);
- // This should dither or we will see artifacts in the background of the image.
- SkAssertResult(ToolUtils::copy_to(&bm4444, kARGB_4444_SkColorType, bm));
- canvas->drawBitmap(bm4444, SkIntToScalar(bm.width()), 0);
- return DrawResult::kOk;
- }
- };
- } // namespace
- DEF_GM( return new CopyTo4444GM; )
- //////////////////////////////////////////////////////////////////////////////
- DEF_SIMPLE_GM(format4444, canvas, 64, 64) {
- canvas->scale(16, 16);
- SkBitmap bitmap;
- SkImageInfo imageInfo = SkImageInfo::Make(1, 1, kARGB_4444_SkColorType, kPremul_SkAlphaType);
- bitmap.allocPixels(imageInfo);
- SkCanvas offscreen(bitmap);
- offscreen.clear(SK_ColorRED);
- canvas->drawBitmap(bitmap, 0, 0);
- offscreen.clear(SK_ColorBLUE);
- canvas->drawBitmap(bitmap, 1, 1);
- auto pack4444 = [](unsigned a, unsigned r, unsigned g, unsigned b) -> uint16_t {
- return (a << 0) | (b << 4) | (g << 8) | (r << 12);
- };
- uint16_t red4444 = pack4444(0xF, 0xF, 0x0, 0x0);
- uint16_t blue4444 = pack4444(0xF, 0x0, 0x0, 0x0F);
- SkPixmap redPixmap(imageInfo, &red4444, 2);
- if (bitmap.writePixels(redPixmap, 0, 0)) {
- canvas->drawBitmap(bitmap, 2, 2);
- }
- SkPixmap bluePixmap(imageInfo, &blue4444, 2);
- if (bitmap.writePixels(bluePixmap, 0, 0)) {
- canvas->drawBitmap(bitmap, 3, 3);
- }
- }
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