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Side by Side Diff: gm/surface.cpp

Issue 551463004: introduce Props to surface (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: fix no-gpu after rebase Created 6 years, 3 months ago
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1 /*
2 * Copyright 2014 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 "gm.h"
9 #include "SkGradientShader.h"
10 #include "SkSurface.h"
11 #include "SkSurfaceProps.h"
12
13 #define W 200
14 #define H 100
15
16 static SkShader* make_shader() {
17 int a = 0x99;
18 int b = 0xBB;
19 SkPoint pts[] = { { 0, 0 }, { W, H } };
20 SkColor colors[] = { SkColorSetRGB(a, a, a), SkColorSetRGB(b, b, b) };
21 return SkGradientShader::CreateLinear(pts, colors, NULL, 2, SkShader::kClamp _TileMode);
22 }
23
24 static SkSurface* make_surface(GrContext* ctx, const SkImageInfo& info, SkPixelG eometry geo,
25 int disallowAA, int disallowDither) {
26 uint32_t flags = 0;
27 if (disallowAA) {
28 flags |= SkSurfaceProps::kDisallowAntiAlias_Flag;
29 }
30 if (disallowDither) {
31 flags |= SkSurfaceProps::kDisallowDither_Flag;
32 }
33
34 SkSurfaceProps props(flags, geo);
35 if (ctx) {
36 return SkSurface::NewRenderTarget(ctx, info, 0, &props);
37 } else {
38 return SkSurface::NewRaster(info, &props);
39 }
40 }
41
42 static void test_draw(SkCanvas* canvas, const char label[]) {
43 SkPaint paint;
44
45 paint.setAntiAlias(true);
46 paint.setLCDRenderText(true);
47 paint.setDither(true);
48
49 paint.setShader(make_shader())->unref();
50 canvas->drawRect(SkRect::MakeWH(W, H), paint);
51 paint.setShader(NULL);
52
53 paint.setColor(SK_ColorWHITE);
54 paint.setTextSize(32);
55 paint.setTextAlign(SkPaint::kCenter_Align);
56 canvas->drawText(label, strlen(label), W / 2, H * 3 / 4, paint);
57 }
58
59 class SurfaceGM : public skiagm::GM {
60 public:
61 SurfaceGM() {}
62
63 protected:
64 SkString onShortName() {
65 return SkString("surface");
66 }
67
68 virtual SkISize onISize() { return SkISize::Make(W * 4, H * 5); }
69
70 virtual void onDraw(SkCanvas* canvas) {
71 GrContext* ctx = canvas->getGrContext();
72
73 // must be opaque to have a hope of testing LCD text
74 const SkImageInfo info = SkImageInfo::MakeN32(W, H, kOpaque_SkAlphaType) ;
75
76 const struct {
77 SkPixelGeometry fGeo;
78 const char* fLabel;
79 } rec[] = {
80 { kUnknown_SkPixelGeometry, "Unknown" },
81 { kRGB_H_SkPixelGeometry, "RGB_H" },
82 { kBGR_H_SkPixelGeometry, "BGR_H" },
83 { kRGB_V_SkPixelGeometry, "RGB_V" },
84 { kBGR_V_SkPixelGeometry, "BGR_V" },
85 };
86
87 SkScalar x = 0;
88 for (int disallowAA = 0; disallowAA <= 1; ++disallowAA) {
89 for (int disallowDither = 0; disallowDither <= 1; ++disallowDither) {
90 SkScalar y = 0;
91 for (size_t i = 0; i < SK_ARRAY_COUNT(rec); ++i) {
92 SkAutoTUnref<SkSurface> surface(make_surface(ctx, info, rec[ i].fGeo,
93 disallowAA, dis allowDither));
94 test_draw(surface->getCanvas(), rec[i].fLabel);
95 surface->draw(canvas, x, y, NULL);
96 y += H;
97 }
98 x += W;
99 }
100 }
101 }
102
103 private:
104 typedef GM INHERITED;
105 };
106
107 DEF_GM( return new SurfaceGM )
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