1 /*
2 * Copyright 2013 Google Inc.
3 *
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 *
8 */
9 #include <v8.h>
10 #include <include/libplatform/libplatform.h>
11
12 #include "SkV8Example.h"
13 #include "Global.h"
14 #include "JsContext.h"
15 #include "Path2D.h"
16 #include "Path2DBuilder.h"
17
18 #include "gl/GrGLUtil.h"
19 #include "gl/GrGLDefines.h"
20 #include "gl/GrGLInterface.h"
21 #include "GrRenderTarget.h"
22 #include "GrContext.h"
23 #include "SkApplication.h"
24 #include "SkCommandLineFlags.h"
25 #include "SkData.h"
26 #include "SkDraw.h"
27 #include "SkGpuDevice.h"
28 #include "SkGraphics.h"
29 #include "SkScalar.h"
30 #include "SkSurface.h"
31
32
33 DEFINE_string2(infile, i, NULL, "Name of file to load JS from.\n");
34 DEFINE_bool(gpu, true, "Use the GPU for rendering.");
35
application_init()36 void application_init() {
37 SkGraphics::Init();
38 SkEvent::Init();
39 }
40
application_term()41 void application_term() {
42 SkEvent::Term();
43 }
44
SkV8ExampleWindow(void * hwnd,JsContext * context)45 SkV8ExampleWindow::SkV8ExampleWindow(void* hwnd, JsContext* context)
46 : INHERITED(hwnd)
47 , fJsContext(context)
48 #if SK_SUPPORT_GPU
49 , fCurContext(NULL)
50 , fCurIntf(NULL)
51 , fCurRenderTarget(NULL)
52 , fCurSurface(NULL)
53 #endif
54 {
55 this->setVisibleP(true);
56 this->setClipToBounds(false);
57
58 #if SK_SUPPORT_GPU
59 this->windowSizeChanged();
60 #endif
61 }
62
~SkV8ExampleWindow()63 SkV8ExampleWindow::~SkV8ExampleWindow() {
64 #if SK_SUPPORT_GPU
65 SkSafeUnref(fCurContext);
66 SkSafeUnref(fCurIntf);
67 SkSafeUnref(fCurRenderTarget);
68 SkSafeUnref(fCurSurface);
69 #endif
70 }
71
72 #if SK_SUPPORT_GPU
windowSizeChanged()73 void SkV8ExampleWindow::windowSizeChanged() {
74 if (FLAGS_gpu) {
75 SkOSWindow::AttachmentInfo attachmentInfo;
76 bool result = this->attach(
77 SkOSWindow::kNativeGL_BackEndType, 0, &attachmentInfo);
78 if (!result) {
79 printf("Failed to attach.");
80 exit(1);
81 }
82
83 fCurIntf = GrGLCreateNativeInterface();
84 fCurContext = GrContext::Create(
85 kOpenGL_GrBackend, (GrBackendContext) fCurIntf);
86 if (NULL == fCurIntf || NULL == fCurContext) {
87 printf("Failed to initialize GL.");
88 exit(1);
89 }
90
91 GrBackendRenderTargetDesc desc;
92 desc.fWidth = SkScalarRoundToInt(this->width());
93 desc.fHeight = SkScalarRoundToInt(this->height());
94 desc.fConfig = kSkia8888_GrPixelConfig;
95 desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
96 desc.fSampleCnt = attachmentInfo.fSampleCount;
97 desc.fStencilBits = attachmentInfo.fStencilBits;
98 GrGLint buffer;
99 GR_GL_GetIntegerv(fCurIntf, GR_GL_FRAMEBUFFER_BINDING, &buffer);
100 desc.fRenderTargetHandle = buffer;
101
102 SkSafeUnref(fCurRenderTarget);
103 fCurRenderTarget = fCurContext->wrapBackendRenderTarget(desc);
104 SkSafeUnref(fCurSurface);
105 fCurSurface = SkSurface::NewRenderTargetDirect(fCurRenderTarget);
106 }
107 }
108 #endif
109
110 #if SK_SUPPORT_GPU
createSurface()111 SkSurface* SkV8ExampleWindow::createSurface() {
112 if (FLAGS_gpu) {
113 // Increase the ref count since callers of createSurface put the
114 // results in a SkAutoTUnref.
115 fCurSurface->ref();
116 return fCurSurface;
117 } else {
118 return this->INHERITED::createSurface();
119 }
120 }
121 #endif
122
onSizeChange()123 void SkV8ExampleWindow::onSizeChange() {
124 this->INHERITED::onSizeChange();
125
126 #if SK_SUPPORT_GPU
127 this->windowSizeChanged();
128 #endif
129 }
130
131 Global* global = NULL;
132
onDraw(SkCanvas * canvas)133 void SkV8ExampleWindow::onDraw(SkCanvas* canvas) {
134
135 canvas->save();
136 canvas->drawColor(SK_ColorWHITE);
137
138 // Now jump into JS and call the onDraw(canvas) method defined there.
139 fJsContext->onDraw(canvas);
140
141 canvas->restore();
142
143 this->INHERITED::onDraw(canvas);
144
145 #if SK_SUPPORT_GPU
146 if (FLAGS_gpu) {
147 fCurContext->flush();
148 this->present();
149 }
150 #endif
151 }
152
153 #ifdef SK_BUILD_FOR_WIN
onHandleInval(const SkIRect & rect)154 void SkV8ExampleWindow::onHandleInval(const SkIRect& rect) {
155 RECT winRect;
156 winRect.top = rect.top();
157 winRect.bottom = rect.bottom();
158 winRect.right = rect.right();
159 winRect.left = rect.left();
160 InvalidateRect((HWND)this->getHWND(), &winRect, false);
161 }
162 #endif
163
164
create_sk_window(void * hwnd,int argc,char ** argv)165 SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
166 printf("Started\n");
167
168 v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
169 SkCommandLineFlags::Parse(argc, argv);
170
171 v8::V8::InitializeICU();
172 v8::Platform* platform = v8::platform::CreateDefaultPlatform();
173 v8::V8::InitializePlatform(platform);
174 v8::V8::Initialize();
175
176 v8::Isolate* isolate = v8::Isolate::New();
177 v8::Isolate::Scope isolate_scope(isolate);
178 v8::HandleScope handle_scope(isolate);
179 isolate->Enter();
180
181 global = new Global(isolate);
182
183
184 // Set up things to look like a browser by creating
185 // a console object that invokes our print function.
186 const char* startupScript =
187 "function Console() {}; \n"
188 "Console.prototype.log = function() { \n"
189 " var args = Array.prototype.slice.call(arguments).join(' '); \n"
190 " print(args); \n"
191 "}; \n"
192 "console = new Console(); \n";
193
194 if (!global->parseScript(startupScript)) {
195 printf("Failed to parse startup script: %s.\n", FLAGS_infile[0]);
196 exit(1);
197 }
198
199 const char* script =
200 "function onDraw(canvas) { \n"
201 " canvas.fillStyle = '#00FF00'; \n"
202 " canvas.fillRect(20, 20, 100, 100); \n"
203 " canvas.inval(); \n"
204 "} \n";
205
206 SkAutoTUnref<SkData> data;
207 if (FLAGS_infile.count()) {
208 data.reset(SkData::NewFromFileName(FLAGS_infile[0]));
209 script = static_cast<const char*>(data->data());
210 }
211 if (NULL == script) {
212 printf("Could not load file: %s.\n", FLAGS_infile[0]);
213 exit(1);
214 }
215 Path2DBuilder::AddToGlobal(global);
216 Path2D::AddToGlobal(global);
217
218 if (!global->parseScript(script)) {
219 printf("Failed to parse file: %s.\n", FLAGS_infile[0]);
220 exit(1);
221 }
222
223
224 JsContext* jsContext = new JsContext(global);
225
226 if (!jsContext->initialize()) {
227 printf("Failed to initialize.\n");
228 exit(1);
229 }
230 SkV8ExampleWindow* win = new SkV8ExampleWindow(hwnd, jsContext);
231 global->setWindow(win);
232
233 return win;
234 }
235