+++ /dev/null
-#ifndef DALI_TOOLKIT_SVG_RASTERIZE_THREAD_H
-#define DALI_TOOLKIT_SVG_RASTERIZE_THREAD_H
-
-/*
- * Copyright (c) 2019 Samsung Electronics Co., Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// EXTERNAL INCLUDES
-#include <dali/devel-api/adaptor-framework/event-thread-callback.h>
-#include <dali/devel-api/threading/conditional-wait.h>
-#include <dali/devel-api/threading/mutex.h>
-#include <dali/devel-api/threading/thread.h>
-#include <dali/public-api/images/buffer-image.h>
-#include <dali/public-api/images/pixel-data.h>
-#include <dali/public-api/common/intrusive-ptr.h>
-#include <dali/public-api/common/vector-wrapper.h>
-#include <dali/public-api/object/ref-object.h>
-#include <dali/public-api/rendering/texture-set.h>
-#include <dali-toolkit/internal/visuals/visual-url.h>
-
-struct NSVGimage;
-struct NSVGrasterizer;
-
-namespace Dali
-{
-
-namespace Toolkit
-{
-
-namespace Internal
-{
-
-class SvgVisual;
-typedef IntrusivePtr< SvgVisual > SvgVisualPtr;
-class RasterizingTask;
-typedef IntrusivePtr< RasterizingTask > RasterizingTaskPtr;
-
-/**
- * The svg rasterizing tasks to be processed in the worker thread.
- *
- * Life cycle of a rasterizing task is as follows:
- * 1. Created by SvgVisual in the main thread
- * 2. Queued in the worked thread waiting to be processed.
- * 3. If this task gets its turn to do the rasterization, it triggers main thread to apply the rasterized image to material then been deleted in main thread call back
- * Or if this task is been removed ( new image/size set to the visual or actor off stage) before its turn to be processed, it then been deleted in the worker thread.
- */
-class RasterizingTask : public RefObject
-{
-public:
- /**
- * Constructor
- *
- * @param[in] svgRenderer The renderer which the rasterized image to be applied.
- * @param[in] parsedSvg The parsed svg for rasterizing.
- * Note, after the task is added to the worker thread, the worker thread takes over the ownership.
- * When the image is to be deleted, delete it in the worker thread by calling SvgRasterizeThread::DeleteImage( parsedSvg ).
- * @param[in] url The URL to svg resource to use.
- * @param[in] width The rasterization width.
- * @param[in] height The rasterization height.
- */
- RasterizingTask( SvgVisual* svgRenderer, NSVGimage* parsedSvg, const VisualUrl& url, float dpi, unsigned int width, unsigned int height );
-
- /**
- * Destructor.
- */
- ~RasterizingTask();
-
- /**
- * Do the rasterization with the mRasterizer.
- */
- void Rasterize( );
-
- /**
- * Get the svg visual
- */
- SvgVisual* GetSvgVisual() const;
-
- /**
- * Get the rasterization result.
- * @return The pixel data with the rasterized pixels.
- */
- PixelData GetPixelData() const;
-
- /**
- * Get the parsed data.
- * @return parsed image data.
- */
- NSVGimage* GetParsedImage() const;
-
- /**
- * Load svg file
- */
- void Load();
-
-private:
- // Undefined
- RasterizingTask( const RasterizingTask& task );
-
- // Undefined
- RasterizingTask& operator=( const RasterizingTask& task );
-
-private:
- SvgVisualPtr mSvgVisual;
- NSVGimage* mParsedSvg;
- VisualUrl mUrl;
- PixelData mPixelData;
- float mDpi;
- unsigned int mWidth;
- unsigned int mHeight;
- NSVGrasterizer* mRasterizer;
-};
-
-/**
- * The worker thread for SVG rasterization.
- */
-class SvgRasterizeThread : public Thread
-{
-public:
-
- /**
- * Constructor.
- *
- * @param[in] trigger The trigger to wake up the main thread.
- */
- SvgRasterizeThread( EventThreadCallback* trigger );
-
- /**
- * Terminate the svg rasterize thread, join and delete.
- */
- static void TerminateThread( SvgRasterizeThread*& thread );
-
- /**
- * Add a rasterization task into the waiting queue, called by main thread.
- *
- * @param[in] task The task added to the queue.
- */
- void AddTask( RasterizingTaskPtr task );
-
- /**
- * Pop the next task out from the completed queue, called by main thread.
- *
- * @return The next task in the completed queue.
- */
- RasterizingTaskPtr NextCompletedTask();
-
- /**
- * Remove the task with the given visual from the waiting queue, called by main thread.
- *
- * Typically called when the actor is put off stage, so the renderer is not needed anymore.
- *
- * @param[in] visual The visual pointer.
- */
- void RemoveTask( SvgVisual* visual );
-
- /**
- * Delete the parsed SVG image, called by main thread.
- *
- * The parsed svg should be delelted in worker thread, as the main thread does not know whether a rasterization of this svg is ongoing.
- *
- * @param[in] parsedImage The image to be deleted
- */
- void DeleteImage( NSVGimage* parsedSvg );
-
-private:
-
- /**
- * Pop the next task out from the queue.
- *
- * @return The next task to be processed.
- */
- RasterizingTaskPtr NextTaskToProcess();
-
- /**
- * Add a task in to the queue
- *
- * @param[in] task The task added to the queue.
- */
- void AddCompletedTask( RasterizingTaskPtr task );
-
-protected:
-
- /**
- * Destructor.
- */
- virtual ~SvgRasterizeThread();
-
-
- /**
- * The entry function of the worker thread.
- * It fetches task from the Queue, rasterizes the image and apply to the renderer.
- */
- void Run() override;
-
-private:
-
- // Undefined
- SvgRasterizeThread( const SvgRasterizeThread& thread );
-
- // Undefined
- SvgRasterizeThread& operator=( const SvgRasterizeThread& thread );
-
-private:
-
- std::vector<RasterizingTaskPtr> mRasterizeTasks; //The queue of the tasks waiting to rasterize the SVG image
- std::vector <RasterizingTaskPtr> mCompletedTasks; //The queue of the tasks with the SVG rasterization completed
- Vector<NSVGimage*> mDeleteSvg; //The images that the event thread requested to delete
-
- ConditionalWait mConditionalWait;
- Dali::Mutex mMutex;
- EventThreadCallback* mTrigger;
-
- bool mIsThreadWaiting;
-};
-
-} // namespace Internal
-
-} // namespace Toolkit
-
-} // namespace Dali
-
-#endif // DALI_TOOLKIT_SVG_RASTERIZE_THREAD_H
projects / platform / core / uifw / dali-toolkit.git / blobdiff