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annotate Framework/Viewport/SdlViewport.cpp @ 1203:f3bb9a6dd949 broker

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locking abstraction in IViewport
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 29 Nov 2019 21:22:21 +0100
parents af456106576c
children 6009c59d8676
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21 #include "SdlViewport.h"
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22
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23 #include <Core/OrthancException.h>
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24
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25 namespace OrthancStone
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26 {
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27 SdlOpenGLViewport::SdlOpenGLViewport(const char* title,
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28 unsigned int width,
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29 unsigned int height,
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30 bool allowDpiScaling) :
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31 context_(title, width, height, allowDpiScaling)
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32 {
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33 compositor_.reset(new OpenGLCompositor(context_, GetScene()));
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34 }
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35
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36 void SdlOpenGLViewport::Refresh()
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37 {
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38 boost::mutex::scoped_lock lock(mutex_);
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39 compositor_->Refresh();
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40 }
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41
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42
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43 SdlCairoViewport::SdlCairoViewport(const char* title,
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44 unsigned int width,
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45 unsigned int height,
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46 bool allowDpiScaling) :
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47 window_(title, width, height, false /* enable OpenGL */, allowDpiScaling),
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48 compositor_(GetScene(), width, height)
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49 {
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50 UpdateSdlSurfaceSize(width, height);
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51 }
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52
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53 SdlCairoViewport::~SdlCairoViewport()
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54 {
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55 if (sdlSurface_)
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56 {
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57 SDL_FreeSurface(sdlSurface_);
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58 }
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59 }
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60
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61 void SdlCairoViewport::RefreshInternal() // Assumes that the mutex is locked
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62 {
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63 compositor_.Refresh();
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64 window_.Render(sdlSurface_);
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65 }
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66
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67 void SdlCairoViewport::Refresh()
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68 {
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69 boost::mutex::scoped_lock lock(mutex_);
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70 RefreshInternal();
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71 }
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72
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73 void SdlCairoViewport::UpdateSize(unsigned int width,
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74 unsigned int height)
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75 {
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76 boost::mutex::scoped_lock lock(mutex_);
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77 compositor_.UpdateSize(width, height);
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78 UpdateSdlSurfaceSize(width, height);
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79 RefreshInternal();
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80 }
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81
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82 void SdlCairoViewport::UpdateSdlSurfaceSize(unsigned int width,
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83 unsigned int height) // Assumes that the mutex is locked
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84 {
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85 static const uint32_t rmask = 0x00ff0000;
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86 static const uint32_t gmask = 0x0000ff00;
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87 static const uint32_t bmask = 0x000000ff;
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88
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89 sdlSurface_ = SDL_CreateRGBSurfaceFrom((void*)(compositor_.GetCanvas().GetBuffer()), width, height, 32,
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90 compositor_.GetCanvas().GetPitch(), rmask, gmask, bmask, 0);
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91 if (!sdlSurface_)
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92 {
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93 LOG(ERROR) << "Cannot create a SDL surface from a Cairo surface";
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94 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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95 }
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96 }
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97 }