2 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 //------------------------------------------------------------------------------
19 // Run a json script layout file
21 // - watches an named file and reloads actor tree if the file changes
23 // builder-run layout.json
25 // and edit layout.json in a text editor saving to trigger the reload
27 //------------------------------------------------------------------------------
29 #include <dali/dali.h>
30 #include <dali-toolkit/dali-toolkit.h>
31 #include <dali-toolkit/public-api/builder/builder.h>
32 #include <dali-toolkit/public-api/builder/tree-node.h>
37 #include <boost/scoped_ptr.hpp>
39 //#include <boost/regex.hpp>
43 #include <dali/integration-api/debug.h>
45 #define TOKEN_STRING(x) #x
48 using namespace Dali::Toolkit;
53 std::string JSON_BROKEN(" \
60 'parent-origin': 'CENTER', \
61 'text':'COULD NOT LOAD JSON FILE' \
67 std::string ReplaceQuotes(const std::string &single_quoted)
69 std::string s(single_quoted);
71 // wrong as no embedded quote but had regex link problems
72 std::replace(s.begin(), s.end(), '\'', '"');
80 //------------------------------------------------------------------------------
84 //------------------------------------------------------------------------------
90 explicit FileWatcher(const std::string &fn): mLastTime(0) { SetFilename(fn) ; };
92 void SetFilename(const std::string &fn);
93 std::string GetFilename();
95 bool FileHasChanged(void);
96 std::string GetFileContents(void) { return GetFileContents(mstringPath) ; };
100 // FileWatcher(const FileWatcher&);
101 // FileWatcher &operator=(const FileWatcher &);
103 std::time_t mLastTime;
104 std::string mstringPath;
106 std::string GetFileContents(const std::string &fn)
108 std::ifstream t(fn.c_str());
109 return std::string((std::istreambuf_iterator<char>(t)), std::istreambuf_iterator<char>());
113 FileWatcher::FileWatcher(void) : mLastTime(0)
117 bool FileWatcher::FileHasChanged(void)
121 if(0 != stat(mstringPath.c_str(), &buf))
123 DALI_LOG_WARNING("File does not exist '%s'\n", mstringPath.c_str());
128 if(buf.st_mtime > mLastTime)
130 mLastTime = buf.st_mtime;
135 mLastTime = buf.st_mtime;
143 FileWatcher::~FileWatcher()
147 void FileWatcher::SetFilename(const std::string &fn)
152 std::string FileWatcher::GetFilename(void)
158 //------------------------------------------------------------------------------
162 //------------------------------------------------------------------------------
163 class ExampleApp : public ConnectionTracker
166 ExampleApp(Application &app) : mApp(app)
168 app.InitSignal().Connect(this, &ExampleApp::Create);
175 void SetJSONFilename(std::string const &fn) { fw.SetFilename(fn) ; };
177 void Create(Application& app)
179 mTimer = Timer::New( 500 ); // ms
180 mTimer.TickSignal().Connect( this, &ExampleApp::OnTimer);
183 // Connect to key events in order to exit
184 Stage::GetCurrent().KeyEventSignal().Connect(this, &ExampleApp::OnKeyEvent);
194 void ReloadJsonFile(Builder& builder, Layer& layer)
196 Stage stage = Stage::GetCurrent();
198 builder = Builder::New();
199 builder.QuitSignal().Connect( this, &ExampleApp::OnBuilderQuit );
201 Property::Map defaultDirs;
202 defaultDirs[ TOKEN_STRING(DALI_IMAGE_DIR) ] = DALI_IMAGE_DIR;
203 defaultDirs[ TOKEN_STRING(DALI_MODEL_DIR) ] = DALI_MODEL_DIR;
204 defaultDirs[ TOKEN_STRING(DALI_SCRIPT_DIR) ] = DALI_SCRIPT_DIR;
206 builder.AddConstants( defaultDirs );
210 layer = Layer::New();
211 layer.SetParentOrigin(ParentOrigin::CENTER);
212 layer.SetAnchorPoint(AnchorPoint::CENTER);
213 layer.SetSize( stage.GetRootLayer().GetCurrentSize() );
214 stage.GetRootLayer().Add(layer);
216 // render tasks may have been setup last load so remove them
217 RenderTaskList taskList = stage.GetRenderTaskList();
218 if( taskList.GetTaskCount() > 1 )
220 typedef std::vector<RenderTask> Collection;
221 typedef Collection::iterator ColIter;
224 for(unsigned int i = 1; i < taskList.GetTaskCount(); ++i)
226 tasks.push_back( taskList.GetTask(i) );
229 for(ColIter iter = tasks.begin(); iter != tasks.end(); ++iter)
231 taskList.RemoveTask(*iter);
234 RenderTask defaultTask = taskList.GetTask(0);
235 defaultTask.SetSourceActor( stage.GetRootLayer() );
236 defaultTask.SetTargetFrameBuffer( FrameBufferImage() );
240 unsigned int numChildren = layer.GetChildCount();
242 for(unsigned int i=0; i<numChildren; ++i)
244 layer.Remove( layer.GetChildAt(0) );
247 std::string data(fw.GetFileContents());
251 builder.LoadFromString(data);
255 builder.LoadFromString(ReplaceQuotes(JSON_BROKEN));
258 builder.AddActors( layer );
265 if(fw.FileHasChanged())
267 ReloadJsonFile( mBuilder, mRootLayer );
273 // Process Key events to Quit on back-key
274 void OnKeyEvent( const KeyEvent& event )
276 if( event.state == KeyEvent::Down )
278 if( IsKey( event, Dali::DALI_KEY_ESCAPE ) || IsKey( event, Dali::DALI_KEY_BACK ) )
293 //------------------------------------------------------------------------------
297 //------------------------------------------------------------------------------
298 int main(int argc, char **argv)
300 Application dali_app = Application::New(&argc, &argv);
302 ExampleApp app(dali_app);
307 std::cout << "Loading file:" << argc << " " << argv[1] << std::endl;
308 app.SetJSONFilename(argv[1]);
312 DALI_ASSERT_ALWAYS(!"Specify JSON file on command line\n");