1/*
2 * Copyright 2016 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 "Test.h"
9#include "SkBitmap.h"
10#include "SkCanvas.h"
11#include "SkImage.h"
12#include "SkPerlinNoiseShader.h"
13#include "SkRRect.h"
14#include "SkShader.h"
15#include "SkSurface.h"
16#include "SkData.h"
17
18static void check_isabitmap(skiatest::Reporter* reporter, SkShader* shader,
19                            int expectedW, int expectedH,
20                            SkShader::TileMode expectedX, SkShader::TileMode expectedY,
21                            const SkMatrix& expectedM) {
22    SkShader::TileMode tileModes[2];
23    SkMatrix localM;
24
25#ifdef SK_SUPPORT_LEGACY_SHADER_ISABITMAP
26    SkBitmap bm;
27    REPORTER_ASSERT(reporter, shader->isABitmap(&bm, &localM, tileModes));
28    REPORTER_ASSERT(reporter, bm.width() == expectedW);
29    REPORTER_ASSERT(reporter, bm.height() == expectedH);
30    REPORTER_ASSERT(reporter, localM == expectedM);
31    REPORTER_ASSERT(reporter, tileModes[0] == expectedX);
32    REPORTER_ASSERT(reporter, tileModes[1] == expectedY);
33#endif
34
35    // wack these so we don't get a false positive
36    localM.setScale(9999, -9999);
37    tileModes[0] = tileModes[1] = (SkShader::TileMode)99;
38
39    SkImage* image = shader->isAImage(&localM, tileModes);
40    REPORTER_ASSERT(reporter, image);
41    REPORTER_ASSERT(reporter, image->width() == expectedW);
42    REPORTER_ASSERT(reporter, image->height() == expectedH);
43    REPORTER_ASSERT(reporter, localM == expectedM);
44    REPORTER_ASSERT(reporter, tileModes[0] == expectedX);
45    REPORTER_ASSERT(reporter, tileModes[1] == expectedY);
46}
47
48DEF_TEST(Shader_isABitmap, reporter) {
49    const int W = 100;
50    const int H = 100;
51    SkBitmap bm;
52    bm.allocN32Pixels(W, H);
53    auto img = SkImage::MakeFromBitmap(bm);
54    const SkMatrix localM = SkMatrix::MakeScale(2, 3);
55    const SkShader::TileMode tmx = SkShader::kRepeat_TileMode;
56    const SkShader::TileMode tmy = SkShader::kMirror_TileMode;
57
58    auto shader0 = SkShader::MakeBitmapShader(bm, tmx, tmy, &localM);
59    auto shader1 = SkImage::MakeFromBitmap(bm)->makeShader(tmx, tmy, &localM);
60
61    check_isabitmap(reporter, shader0.get(), W, H, tmx, tmy, localM);
62    check_isabitmap(reporter, shader1.get(), W, H, tmx, tmy, localM);
63}
64
65// Make sure things are ok with just a single leg.
66DEF_TEST(ComposeShaderSingle, reporter) {
67    SkBitmap srcBitmap;
68    srcBitmap.allocN32Pixels(10, 10);
69    srcBitmap.eraseColor(SK_ColorRED);
70    SkCanvas canvas(srcBitmap);
71    SkPaint p;
72    p.setShader(
73        SkShader::MakeComposeShader(
74        SkShader::MakeEmptyShader(),
75        SkPerlinNoiseShader::MakeFractalNoise(1.0f, 1.0f, 2, 0.0f),
76        SkBlendMode::kClear));
77    SkRRect rr;
78    SkVector rd[] = {{0, 0}, {0, 0}, {0, 0}, {0, 0}};
79    rr.setRectRadii({0, 0, 0, 0}, rd);
80    canvas.drawRRect(rr, p);
81}
82