Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(369)

Side by Side Diff: gm/filterindiabox.cpp

Issue 300113008: Make image scaling have floating point scales. Third attempt to land this (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Windows build fix Created 6 years, 6 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
« no previous file with comments | « expectations/gm/ignored-tests.txt ('k') | gyp/gmslides.gypi » ('j') | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
(Empty)
1 /*
2 * Copyright 2011 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
11 #include "SkTypeface.h"
12 #include "SkImageDecoder.h"
13 #include "SkStream.h"
14
15 #include "SkImageEncoder.h"
16 #include "SkBitmapScaler.h"
17 #include "SkBitmapProcState.h"
18
19 static SkSize computeSize(const SkBitmap& bm, const SkMatrix& mat) {
20 SkRect bounds = SkRect::MakeWH(SkIntToScalar(bm.width()),
21 SkIntToScalar(bm.height()));
22 mat.mapRect(&bounds);
23 return SkSize::Make(bounds.width(), bounds.height());
24 }
25
26 static void draw_row(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx) {
27 SkPaint paint;
28
29 SkAutoCanvasRestore acr(canvas, true);
30
31 canvas->drawBitmapMatrix(bm, mat, &paint);
32
33 paint.setFilterLevel(SkPaint::kLow_FilterLevel);
34 canvas->translate(dx, 0);
35 canvas->drawBitmapMatrix(bm, mat, &paint);
36
37 paint.setFilterLevel(SkPaint::kMedium_FilterLevel);
38 canvas->translate(dx, 0);
39 canvas->drawBitmapMatrix(bm, mat, &paint);
40
41 paint.setFilterLevel(SkPaint::kHigh_FilterLevel);
42 canvas->translate(dx, 0);
43 canvas->drawBitmapMatrix(bm, mat, &paint);
44 }
45
46 class FilterIndiaBoxGM : public skiagm::GM {
47 void onOnceBeforeDraw() {
48
49 this->makeBitmap();
50
51 SkScalar cx = SkScalarHalf(fBM.width());
52 SkScalar cy = SkScalarHalf(fBM.height());
53
54 float vertScale = 30.0f/55.0f;
55 float horizScale = 150.0f/200.0f;
56
57 fMatrix[0].setScale(horizScale, vertScale);
58 fMatrix[1].setRotate(30, cx, cy); fMatrix[1].postScale(horizScale, vertS cale);
59 }
60
61 public:
62 SkBitmap fBM;
63 SkMatrix fMatrix[2];
64 SkString fName;
65
66 FilterIndiaBoxGM()
67 {
68 this->setBGColor(0xFFDDDDDD);
69 }
70
71 FilterIndiaBoxGM(const char filename[])
72 : fFilename(filename)
73 {
74 fName.printf("filterindiabox");
75 }
76
77 protected:
78 virtual uint32_t onGetFlags() const SK_OVERRIDE {
79 return kSkipTiled_Flag;
80 }
81
82 virtual SkString onShortName() SK_OVERRIDE {
83 return fName;
84 }
85
86 virtual SkISize onISize() SK_OVERRIDE {
87 return SkISize::Make(1024, 768);
88 }
89
90 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
91
92 canvas->translate(10, 10);
93 for (size_t i = 0; i < SK_ARRAY_COUNT(fMatrix); ++i) {
94 SkSize size = computeSize(fBM, fMatrix[i]);
95 size.fWidth += 20;
96 size.fHeight += 20;
97
98 draw_row(canvas, fBM, fMatrix[i], size.fWidth);
99 canvas->translate(0, size.fHeight);
100 }
101 }
102
103 protected:
104 SkString fFilename;
105 int fSize;
106
107 SkScalar getScale() {
108 return 192.f/fSize;
109 }
110
111 void makeBitmap() {
112 SkString path(skiagm::GM::gResourcePath);
113 path.append("/");
114 path.append(fFilename);
115
116 SkImageDecoder *codec = NULL;
117 SkFILEStream stream(path.c_str());
118 if (stream.isValid()) {
119 codec = SkImageDecoder::Factory(&stream);
120 }
121 if (codec) {
122 stream.rewind();
123 codec->decode(&stream, &fBM, SkBitmap::kARGB_8888_Config,
124 SkImageDecoder::kDecodePixels_Mode);
125 SkDELETE(codec);
126 } else {
127 fBM.allocN32Pixels(1, 1);
128 *(fBM.getAddr32(0,0)) = 0xFF0000FF; // red == bad
129 }
130 fSize = fBM.height();
131 }
132 private:
133 typedef skiagm::GM INHERITED;
134 };
135
136 //////////////////////////////////////////////////////////////////////////////
137
138
139 DEF_GM( return new FilterIndiaBoxGM("box.gif"); )
OLDNEW
« no previous file with comments | « expectations/gm/ignored-tests.txt ('k') | gyp/gmslides.gypi » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698