1 /*
2 * Copyright 2018 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/gm.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkPaint.h"
11 #include "include/core/SkPath.h"
12 #include "include/core/SkRect.h"
13 #include "include/core/SkRefCnt.h"
14 #include "include/core/SkSurface.h"
15 #include "include/core/SkTiledImageUtils.h"
16
17 DEF_SIMPLE_GM(path_huge_crbug_800804, canvas, 50, 600) {
18 SkPaint paint;
19 paint.setAntiAlias(true);
20 paint.setStyle(SkPaint::kStroke_Style);
21
22 // exercise various special-cases (e.g. hairlines or not)
23 const float widths[] = { 0.9f, 1.0f, 1.1f };
24
25 SkPath path;
26 for (float w : widths) {
27 paint.setStrokeWidth(w);
28
29 path.reset();
30 path.moveTo(-1000,12345678901234567890.f);
31 path.lineTo(10.5f,200);
32 canvas->drawPath(path, paint);
33
34 path.reset();
35 path.moveTo(30.5f,400);
36 path.lineTo(1000,-9.8765432109876543210e+19f);
37 canvas->drawPath(path, paint);
38
39 canvas->translate(3, 0);
40 }
41 }
42
43 // Test that we can draw into a huge surface ( > 64K ) and still retain paths and antialiasing.
draw_huge_path(SkCanvas * canvas,int w,int h,bool manual)44 static void draw_huge_path(SkCanvas* canvas, int w, int h, bool manual) {
45 SkAutoCanvasRestore acr(canvas, true);
46
47 auto surf = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(w, h));
48 auto can = surf->getCanvas();
49
50 SkPaint paint;
51 SkPath path;
52 path.addRoundRect(SkRect::MakeXYWH(4, 4, w - 8, h - 8), 12, 12);
53
54 canvas->save();
55 canvas->clipRect(SkRect::MakeXYWH(4, 4, 64, 64));
56 can->drawPath(path, paint);
57 if (manual) {
58 SkTiledImageUtils::DrawImage(canvas, surf->makeImageSnapshot(), 64 - w, 0);
59 } else {
60 canvas->drawImage(surf->makeImageSnapshot(), 64 - w, 0);
61 }
62 canvas->restore();
63
64 canvas->translate(80, 0);
65 canvas->save();
66 canvas->clipRect(SkRect::MakeXYWH(4, 4, 64, 64));
67 can->clear(0);
68 paint.setAntiAlias(true);
69 can->drawPath(path, paint);
70 if (manual) {
71 SkTiledImageUtils::DrawImage(canvas, surf->makeImageSnapshot(), 64 - w, 0);
72 } else {
73 canvas->drawImage(surf->makeImageSnapshot(), 64 - w, 0);
74 }
75 canvas->restore();
76 };
77
78 DEF_SIMPLE_GM(path_huge_aa, canvas, 200, 200) {
79 draw_huge_path(canvas, 100, 60, /* manual= */ false);
80 canvas->translate(0, 80);
81 draw_huge_path(canvas, 100 * 1024, 60, /* manual= */ false);
82 }
83
84 DEF_SIMPLE_GM(path_huge_aa_manual, canvas, 200, 200) {
85 draw_huge_path(canvas, 100, 60, /* manual= */ true);
86 canvas->translate(0, 80);
87 draw_huge_path(canvas, 100 * 1024, 60, /* manual= */ true);
88 }
89