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humperd1d3bae2014-08-08 12:11:33 -07001/*
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
msarettd15750c2016-03-18 15:48:49 -07008#include "DecodeFile.h"
humperd1d3bae2014-08-08 12:11:33 -07009#include "gm.h"
10
11#include "Resources.h"
12#include "SampleCode.h"
13#include "SkBlurMaskFilter.h"
14#include "SkCanvas.h"
15#include "SkColorPriv.h"
bungemand3ebb482015-08-05 13:57:49 -070016#include "SkPath.h"
humperd1d3bae2014-08-08 12:11:33 -070017#include "SkRandom.h"
18#include "SkStream.h"
19#include "SkTime.h"
Mike Reedebfce6d2016-12-12 10:02:12 -050020#include "SkClipOpPriv.h"
humperd1d3bae2014-08-08 12:11:33 -070021
22// Intended to exercise pixel snapping observed with scaled images (and
23// with non-scaled images, but for a different reason): Bug 1145
24
25class IdentityScaleView : public SampleView {
26public:
27 IdentityScaleView(const char imageFilename[]) {
28 SkString resourcePath = GetResourcePath(imageFilename);
msarettd15750c2016-03-18 15:48:49 -070029 if (!decode_file(resourcePath.c_str(), &fBM)) {
humperd1d3bae2014-08-08 12:11:33 -070030 fBM.allocN32Pixels(1, 1);
31 *(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
32 }
33 }
34
35protected:
36 SkBitmap fBM;
37
38 // overrides from SkEventSink
mtklein36352bf2015-03-25 18:17:31 -070039 bool onQuery(SkEvent* evt) override {
humperd1d3bae2014-08-08 12:11:33 -070040 if (SampleCode::TitleQ(*evt)) {
41 SampleCode::TitleR(evt, "IdentityScale");
42 return true;
43 }
44 return this->INHERITED::onQuery(evt);
45 }
46
mtklein36352bf2015-03-25 18:17:31 -070047 void onDrawContent(SkCanvas* canvas) override {
humperd1d3bae2014-08-08 12:11:33 -070048
49 SkPaint paint;
50
51 paint.setAntiAlias(true);
52 paint.setTextSize(48);
reed93a12152015-03-16 10:08:34 -070053 paint.setFilterQuality(kHigh_SkFilterQuality);
humperd1d3bae2014-08-08 12:11:33 -070054
55 SkTime::DateTime time;
56 SkTime::GetDateTime(&time);
57
58 bool use_scale = (time.fSecond % 2 == 1);
59 const char *text;
60
61 canvas->save();
62 if (use_scale) {
63 text = "Scaled = 1";
64 } else {
65
66 SkRect r = { 100, 100, 356, 356 };
67 SkPath clipPath;
68 clipPath.addRoundRect(r, SkIntToScalar(5), SkIntToScalar(5));
Mike Reedc1f77742016-12-09 09:00:50 -050069 canvas->clipPath(clipPath, kIntersect_SkClipOp, true);
humperd1d3bae2014-08-08 12:11:33 -070070 text = "Scaled = 0";
71 }
72 canvas->drawBitmap( fBM, 100, 100, &paint );
73 canvas->restore();
74 canvas->drawText( text, strlen(text), 100, 400, paint );
halcanary96fcdcc2015-08-27 07:41:13 -070075 this->inval(nullptr);
humperd1d3bae2014-08-08 12:11:33 -070076 }
77
78private:
79 typedef SampleView INHERITED;
80};
81
82//////////////////////////////////////////////////////////////////////////////
83
84static SkView* MyFactory() { return new IdentityScaleView("mandrill_256.png"); }
85static SkViewRegister reg(MyFactory);