1 /*
2 * Copyright 2015 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/core/SkBlendMode.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkColor.h"
11 #include "include/core/SkDocument.h"
12 #include "include/core/SkPaint.h"
13 #include "include/core/SkRect.h"
14 #include "include/core/SkRefCnt.h"
15 #include "include/core/SkStream.h"
16 #include "include/core/SkTypes.h"
17 #include "include/docs/SkPDFDocument.h"
18 #include "include/private/base/SkCPUTypes.h"
19 #include "tests/Test.h"
20
run_test(SkWStream * out,SkBlendMode mode,U8CPU alpha)21 static void run_test(SkWStream* out, SkBlendMode mode, U8CPU alpha) {
22 auto pdfDoc = SkPDF::MakeDocument(out);
23 SkCanvas* c = pdfDoc->beginPage(612.0f, 792.0f);
24 SkPaint black;
25 SkPaint background;
26 background.setColor(SK_ColorWHITE);
27 background.setAlpha(alpha);
28 background.setBlendMode(mode);
29 c->drawRect(SkRect::MakeWH(612.0f, 792.0f), background);
30 c->drawRect(SkRect::MakeXYWH(36.0f, 36.0f, 9.0f, 9.0f), black);
31 c->drawRect(SkRect::MakeXYWH(72.0f, 72.0f, 468.0f, 648.0f), background);
32 c->drawRect(SkRect::MakeXYWH(108.0f, 108.0f, 9.0f, 9.0f), black);
33 pdfDoc->close();
34 }
35
36 // http://crbug.com/473572
DEF_TEST(SkPDF_OpaqueSrcModeToSrcOver,r)37 DEF_TEST(SkPDF_OpaqueSrcModeToSrcOver, r) {
38 REQUIRE_PDF_DOCUMENT(SkPDF_OpaqueSrcModeToSrcOver, r);
39 SkDynamicMemoryWStream srcMode;
40 SkDynamicMemoryWStream srcOverMode;
41
42 U8CPU alpha = SK_AlphaOPAQUE;
43 run_test(&srcMode, SkBlendMode::kSrc, alpha);
44 run_test(&srcOverMode, SkBlendMode::kSrcOver, alpha);
45 REPORTER_ASSERT(r, srcMode.bytesWritten() == srcOverMode.bytesWritten());
46 // The two PDFs should be equal because they have an opaque alpha.
47
48 srcMode.reset();
49 srcOverMode.reset();
50
51 alpha = 0x80;
52 run_test(&srcMode, SkBlendMode::kSrc, alpha);
53 run_test(&srcOverMode, SkBlendMode::kSrcOver, alpha);
54 REPORTER_ASSERT(r, srcMode.bytesWritten() > srcOverMode.bytesWritten());
55 // The two PDFs should not be equal because they have a non-opaque alpha.
56 }
57