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 "Test.h"
9 #include "Resources.h"
10 #include "sk_tool_utils.h"
11 #include "SkCanvas.h"
12 #include "SkImageSource.h"
13 #include "SkPicture.h"
14 #include "SkPictureRecorder.h"
15 #include "SkSerialProcs.h"
16 #include "SkSurface.h"
17
picture_to_image(sk_sp<SkPicture> pic)18 static sk_sp<SkImage> picture_to_image(sk_sp<SkPicture> pic) {
19 SkIRect r = pic->cullRect().round();
20 auto surf = SkSurface::MakeRasterN32Premul(r.width(), r.height());
21 surf->getCanvas()->drawPicture(pic);
22 return surf->makeImageSnapshot();
23 }
24
25 struct State {
26 const char* fStr;
27 SkImage* fImg;
28 };
29
DEF_TEST(serial_procs_image,reporter)30 DEF_TEST(serial_procs_image, reporter) {
31 auto src_img = GetResourceAsImage("images/mandrill_128.png");
32 const char magic_str[] = "magic signature";
33
34 const SkSerialImageProc sprocs[] = {
35 [](SkImage* img, void* ctx) -> sk_sp<SkData> { return nullptr; },
36 [](SkImage* img, void* ctx) { return img->encodeToData(); },
37 [](SkImage* img, void* ctx) { return SkData::MakeWithCString(((State*)ctx)->fStr); },
38 };
39 const SkDeserialImageProc dprocs[] = {
40 [](const void* data, size_t length, void*) -> sk_sp<SkImage> {
41 SK_ABORT("should not get called");
42 return nullptr;
43 },
44 [](const void* data, size_t length, void*) {
45 return SkImage::MakeFromEncoded(SkData::MakeWithCopy(data, length));
46 },
47 [](const void* data, size_t length, void* ctx) -> sk_sp<SkImage> {
48 State* state = (State*)ctx;
49 if (length != strlen(state->fStr)+1 || memcmp(data, state->fStr, length)) {
50 return nullptr;
51 }
52 return sk_ref_sp(state->fImg);
53 },
54 };
55
56 sk_sp<SkPicture> pic;
57 {
58 SkPictureRecorder rec;
59 SkCanvas* canvas = rec.beginRecording(128, 128);
60 canvas->drawImage(src_img, 0, 0, nullptr);
61 pic = rec.finishRecordingAsPicture();
62 }
63
64 State state = { magic_str, src_img.get() };
65
66 SkSerialProcs sproc;
67 sproc.fImageCtx = &state;
68 SkDeserialProcs dproc;
69 dproc.fImageCtx = &state;
70
71 for (size_t i = 0; i < SK_ARRAY_COUNT(sprocs); ++i) {
72 sproc.fImageProc = sprocs[i];
73 auto data = pic->serialize(&sproc);
74 REPORTER_ASSERT(reporter, data);
75
76 dproc.fImageProc = dprocs[i];
77 auto new_pic = SkPicture::MakeFromData(data.get(), &dproc);
78 REPORTER_ASSERT(reporter, data);
79
80 auto dst_img = picture_to_image(new_pic);
81 REPORTER_ASSERT(reporter, sk_tool_utils::equal_pixels(src_img.get(), dst_img.get()));
82 }
83 }
84
85 ///////////////////////////////////////////////////////////////////////////////////////////////////
86
make_pic(const std::function<void (SkCanvas *)> & drawer)87 static sk_sp<SkPicture> make_pic(const std::function<void(SkCanvas*)>& drawer) {
88 SkPictureRecorder rec;
89 drawer(rec.beginRecording(128, 128));
90 return rec.finishRecordingAsPicture();
91 }
92
makes(SkSerialPictureProc proc,void * ctx=nullptr)93 static SkSerialProcs makes(SkSerialPictureProc proc, void* ctx = nullptr) {
94 SkSerialProcs procs;
95 procs.fPictureProc = proc;
96 procs.fPictureCtx = ctx;
97 return procs;
98 }
99
maked(SkDeserialPictureProc proc,const void * ctx=nullptr)100 static SkDeserialProcs maked(SkDeserialPictureProc proc, const void* ctx = nullptr) {
101 SkDeserialProcs procs;
102 procs.fPictureProc = proc;
103 procs.fPictureCtx = const_cast<void*>(ctx);
104 return procs;
105 }
106
107 // packages the picture's point in the skdata, and records it in the ctx as an array
108 struct Context {
109 SkTDArray<SkPicture*> fArray;
110 SkPicture* fSkipMe = nullptr;
111 };
112
array_serial_proc(SkPicture * pic,void * ctx)113 static sk_sp<SkData> array_serial_proc(SkPicture* pic, void* ctx) {
114 Context* c = (Context*)ctx;
115 if (c->fSkipMe == pic) {
116 return nullptr;
117 }
118 *c->fArray.append() = pic;
119 return SkData::MakeWithCopy(&pic, sizeof(pic));
120 }
121
array_deserial_proc(const void * data,size_t size,void * ctx)122 static sk_sp<SkPicture> array_deserial_proc(const void* data, size_t size, void* ctx) {
123 SkASSERT(sizeof(SkPicture*) == size);
124
125 Context* c = (Context*)ctx;
126 SkPicture* pic;
127 memcpy(&pic, data, size);
128
129 int index = c->fArray.find(pic);
130 SkASSERT(index >= 0);
131 c->fArray.removeShuffle(index);
132
133 return sk_ref_sp(pic);
134 }
135
test_pictures(skiatest::Reporter * reporter,sk_sp<SkPicture> p0,int count,bool skipRoot)136 static void test_pictures(skiatest::Reporter* reporter, sk_sp<SkPicture> p0, int count,
137 bool skipRoot) {
138 Context ctx;
139 if (skipRoot) {
140 ctx.fSkipMe = p0.get();
141 }
142
143 SkSerialProcs sprocs = makes(array_serial_proc, &ctx);
144 auto d0 = p0->serialize(&sprocs);
145 REPORTER_ASSERT(reporter, ctx.fArray.count() == count);
146 SkDeserialProcs dprocs = maked(array_deserial_proc, &ctx);
147 p0 = SkPicture::MakeFromData(d0.get(), &dprocs);
148 REPORTER_ASSERT(reporter, ctx.fArray.count() == 0);
149 }
150
DEF_TEST(serial_procs_picture,reporter)151 DEF_TEST(serial_procs_picture, reporter) {
152
153 auto p1 = make_pic([](SkCanvas* c) {
154 // need to be large enough that drawPictures doesn't "unroll" us
155 for (int i = 0; i < 20; ++i) {
156 c->drawColor(SK_ColorRED);
157 }
158 });
159
160 // now use custom serialization
161 auto p0 = make_pic([](SkCanvas* c) { c->drawColor(SK_ColorBLUE); });
162 test_pictures(reporter, p0, 1, false);
163
164 // test inside effect
165 p0 = make_pic([p1](SkCanvas* c) {
166 SkPaint paint;
167 SkShader::TileMode tm = SkShader::kClamp_TileMode;
168 paint.setShader(SkShader::MakePictureShader(p1, tm, tm, nullptr, nullptr));
169 c->drawPaint(paint);
170 });
171 test_pictures(reporter, p0, 1, true);
172
173 // test nested picture
174 p0 = make_pic([p1](SkCanvas* c) {
175 c->drawColor(SK_ColorRED);
176 c->drawPicture(p1);
177 c->drawColor(SK_ColorBLUE);
178 });
179 test_pictures(reporter, p0, 1, true);
180 }
181
182
