1 /*
2 * Copyright 2017 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/SkBlurTypes.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkColor.h"
12 #include "include/core/SkFont.h"
13 #include "include/core/SkImage.h"
14 #include "include/core/SkImageFilter.h"
15 #include "include/core/SkMaskFilter.h"
16 #include "include/core/SkPaint.h"
17 #include "include/core/SkRect.h"
18 #include "include/core/SkRefCnt.h"
19 #include "include/core/SkString.h"
20 #include "include/core/SkTypeface.h"
21 #include "include/effects/SkImageFilters.h"
22 #include "tools/Resources.h"
23 #include "tools/ToolUtils.h"
24
25 #include <stdio.h>
26
DEF_SIMPLE_GM(blurimagevmask, canvas, 700, 1200)27 DEF_SIMPLE_GM(blurimagevmask, canvas, 700, 1200) {
28 SkPaint paint;
29 paint.setAntiAlias(true);
30 paint.setColor(SK_ColorBLACK);
31
32 SkFont font(ToolUtils::create_portable_typeface(), 25);
33
34 const double sigmas[] = {3.0, 8.0, 16.0, 24.0, 32.0};
35
36 canvas->drawString("mask blur", 285, 50, font, paint);
37 canvas->drawString("image blur", 285 + 250, 50, font, paint);
38
39
40 SkRect r = {35, 100, 135, 200};
41 for (auto sigma:sigmas) {
42
43 canvas->drawRect(r, paint);
44
45 char out[100];
46 sprintf(out, "Sigma: %g", sigma);
47 canvas->drawString(out, r.left(), r.bottom() + 35, font, paint);
48
49 r.offset(250, 0);
50
51 paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, sigma));
52 canvas->drawRect(r, paint);
53 paint.setMaskFilter(nullptr);
54
55 SkPaint imageBlurPaint;
56 r.offset(250, 0);
57 imageBlurPaint.setImageFilter(SkImageFilters::Blur(sigma, sigma, nullptr));
58 canvas->saveLayer(nullptr, &imageBlurPaint);
59
60 canvas->drawRect(r, paint);
61 canvas->restore();
62 r.offset(-500, 200);
63 }
64
65 }
66
DEF_SIMPLE_GM_CAN_FAIL(blur_image, canvas, errorMsg, 500, 500)67 DEF_SIMPLE_GM_CAN_FAIL(blur_image, canvas, errorMsg, 500, 500) {
68 auto image = GetResourceAsImage("images/mandrill_128.png");
69 if (!image) {
70 *errorMsg = "Could not load mandrill_128.png. Did you forget to set the resourcePath?";
71 return skiagm::DrawResult::kFail;
72 }
73
74 SkPaint paint;
75 paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 4));
76
77 // both of these should draw with the blur, but (formerally) we had a bug where the unscaled
78 // version (taking the spriteblitter code path) ignore the maskfilter.
79
80 canvas->drawImage(image, 10, 10, SkSamplingOptions(), &paint);
81 canvas->scale(1.01f, 1.01f);
82 canvas->drawImage(image, 10 + image->width() + 10.f, 10, SkSamplingOptions(), &paint);
83 return skiagm::DrawResult::kOk;
84 }
85
