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- /*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "include/core/SkCanvas.h"
- #include "include/core/SkStream.h"
- #include "include/docs/SkPDFDocument.h"
- #include "tests/Test.h"
- static void run_test(SkWStream* out, SkBlendMode mode, U8CPU alpha) {
- auto pdfDoc = SkPDF::MakeDocument(out);
- SkCanvas* c = pdfDoc->beginPage(612.0f, 792.0f);
- SkPaint black;
- SkPaint background;
- background.setColor(SK_ColorWHITE);
- background.setAlpha(alpha);
- background.setBlendMode(mode);
- c->drawRect(SkRect::MakeWH(612.0f, 792.0f), background);
- c->drawRect(SkRect::MakeXYWH(36.0f, 36.0f, 9.0f, 9.0f), black);
- c->drawRect(SkRect::MakeXYWH(72.0f, 72.0f, 468.0f, 648.0f), background);
- c->drawRect(SkRect::MakeXYWH(108.0f, 108.0f, 9.0f, 9.0f), black);
- pdfDoc->close();
- }
- // http://crbug.com/473572
- DEF_TEST(SkPDF_OpaqueSrcModeToSrcOver, r) {
- REQUIRE_PDF_DOCUMENT(SkPDF_OpaqueSrcModeToSrcOver, r);
- SkDynamicMemoryWStream srcMode;
- SkDynamicMemoryWStream srcOverMode;
- U8CPU alpha = SK_AlphaOPAQUE;
- run_test(&srcMode, SkBlendMode::kSrc, alpha);
- run_test(&srcOverMode, SkBlendMode::kSrcOver, alpha);
- REPORTER_ASSERT(r, srcMode.bytesWritten() == srcOverMode.bytesWritten());
- // The two PDFs should be equal because they have an opaque alpha.
- srcMode.reset();
- srcOverMode.reset();
- alpha = 0x80;
- run_test(&srcMode, SkBlendMode::kSrc, alpha);
- run_test(&srcOverMode, SkBlendMode::kSrcOver, alpha);
- REPORTER_ASSERT(r, srcMode.bytesWritten() > srcOverMode.bytesWritten());
- // The two PDFs should not be equal because they have a non-opaque alpha.
- }
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