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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 "SkCanvas.h"
#include "SkDocument.h"
#include "SkStream.h"
#include "Test.h"
static void run_test(SkWStream* out, SkBlendMode mode, U8CPU alpha) {
sk_sp<SkDocument> pdfDoc(SkDocument::MakePDF(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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