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robertphillips@google.com96ac2f62013-11-07 22:25:21 +00001/*
2 * Copyright 2013 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"
Mike Klein33d20552017-03-22 13:47:51 -04009#include "sk_tool_utils.h"
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000010#include "SkBlurMask.h"
Mike Reed1be1f8d2018-03-14 13:01:17 -040011#include "SkMaskFilter.h"
bungemand3ebb482015-08-05 13:57:49 -070012#include "SkPath.h"
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000013
14namespace skiagm {
15
16// This GM exercises the blurred rect nine-patching special cases when the
17// blurred rect is very large and/or very far from the origin.
skia.committer@gmail.comab7442c2013-11-08 07:01:56 +000018// It creates a large blurred rect/rectori then renders the 4 corners and the
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000019// middle.
20class BigBlursGM : public GM {
21public:
22 BigBlursGM() {
caryclark65cdba62015-06-15 06:51:08 -070023 this->setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000024 }
25
26protected:
mtklein36352bf2015-03-25 18:17:31 -070027 SkString onShortName() override {
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000028 return SkString("bigblurs");
29 }
30
mtklein36352bf2015-03-25 18:17:31 -070031 SkISize onISize() override {
tfarinaf5393182014-06-09 23:59:03 -070032 return SkISize::Make(kWidth, kHeight);
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000033 }
34
mtklein36352bf2015-03-25 18:17:31 -070035 void onDraw(SkCanvas* canvas) override {
mtkleindbfd7ab2016-09-01 11:24:54 -070036 constexpr int kBig = 65536;
37 const SkScalar kSigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(4));
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000038
39 const SkRect bigRect = SkRect::MakeWH(SkIntToScalar(kBig), SkIntToScalar(kBig));
40 SkRect insetRect = bigRect;
41 insetRect.inset(20, 20);
42
43 SkPath rectori;
44
45 rectori.addRect(bigRect);
46 rectori.addRect(insetRect, SkPath::kCCW_Direction);
47
48 // The blur extends 3*kSigma out from the big rect.
49 // Offset the close-up windows so we get the entire blur
mtkleindbfd7ab2016-09-01 11:24:54 -070050 const SkScalar kLeftTopPad = 3*kSigma; // use on left & up of big rect
51 const SkScalar kRightBotPad = kCloseUpSize-3*kSigma; // use on right and bot sides
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000052
53 // UL hand corners of the rendered closeups
54 const SkPoint origins[] = {
55 { -kLeftTopPad, -kLeftTopPad }, // UL
56 { kBig-kRightBotPad, -kLeftTopPad }, // UR
57 { kBig-kRightBotPad, kBig-kRightBotPad }, // LR
58 { -kLeftTopPad, kBig-kRightBotPad }, // LL
59 { kBig/2-kCloseUpSize/2, kBig/2-kCloseUpSize/2 }, // center
60 };
61
62 SkPaint outlinePaint;
63 outlinePaint.setColor(SK_ColorRED);
64 outlinePaint.setStyle(SkPaint::kStroke_Style);
65
66 SkPaint blurPaint;
67 blurPaint.setAntiAlias(true);
68 blurPaint.setColor(SK_ColorBLACK);
69
70 int desiredX = 0, desiredY = 0;
71
72 for (int i = 0; i < 2; ++i) {
commit-bot@chromium.orge3964552014-04-28 16:25:35 +000073 for (int j = 0; j <= kLastEnum_SkBlurStyle; ++j) {
Mike Reed1be1f8d2018-03-14 13:01:17 -040074 blurPaint.setMaskFilter(SkMaskFilter::MakeBlur((SkBlurStyle)j, kSigma));
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000075
76 for (int k = 0; k < (int)SK_ARRAY_COUNT(origins); ++k) {
77 canvas->save();
78
skia.committer@gmail.comab7442c2013-11-08 07:01:56 +000079 SkRect clipRect = SkRect::MakeXYWH(SkIntToScalar(desiredX),
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000080 SkIntToScalar(desiredY),
skia.committer@gmail.comab7442c2013-11-08 07:01:56 +000081 SkIntToScalar(kCloseUpSize),
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000082 SkIntToScalar(kCloseUpSize));
83
reed66998382016-09-21 11:15:07 -070084 canvas->clipRect(clipRect);
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000085
skia.committer@gmail.comab7442c2013-11-08 07:01:56 +000086 canvas->translate(desiredX-origins[k].fX,
robertphillips@google.com96ac2f62013-11-07 22:25:21 +000087 desiredY-origins[k].fY);
88
89 if (0 == i) {
90 canvas->drawRect(bigRect, blurPaint);
91 } else {
92 canvas->drawPath(rectori, blurPaint);
93 }
94 canvas->restore();
95 canvas->drawRect(clipRect, outlinePaint);
96
97 desiredX += kCloseUpSize;
98 }
99
100 desiredX = 0;
101 desiredY += kCloseUpSize;
102 }
103 }
104 }
105
106private:
mtkleindbfd7ab2016-09-01 11:24:54 -0700107 static constexpr int kCloseUpSize = 64;
108 static constexpr int kWidth = 5 * kCloseUpSize;
109 static constexpr int kHeight = 2 * (kLastEnum_SkBlurStyle + 1) * kCloseUpSize;
robertphillips@google.com96ac2f62013-11-07 22:25:21 +0000110
111 typedef GM INHERITED;
112};
113
halcanary385fe4d2015-08-26 13:07:48 -0700114DEF_GM(return new BigBlursGM;)
robertphillips@google.comf3db5462013-11-07 22:43:04 +0000115}