Mercurial > hg > orthanc-stone
annotate Framework/Widgets/ZoomMouseTracker.cpp @ 522:700aa66f2f29 bgo-commands-codegen
Removed deleted file from cmakelists + fixed renames in compilation. Samples build OK in WAS but still not fully functional
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Tue, 12 Mar 2019 15:01:36 +0100 |
parents | 3b4df9925db6 |
children | 4f2416d519b4 |
rev | line source |
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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 |
439 | 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium |
332
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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 |
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22 #include "ZoomMouseTracker.h" |
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23 |
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24 #include <Core/Logging.h> |
403 | 25 #include <Core/OrthancException.h> |
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26 |
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27 namespace OrthancStone |
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28 { |
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29 ZoomMouseTracker::ZoomMouseTracker(WorldSceneWidget& that, |
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30 int x, |
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31 int y) : |
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32 that_(that), |
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33 originalZoom_(that.GetView().GetZoom()), |
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34 downX_(x), |
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35 downY_(y) |
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36 { |
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37 that.GetView().MapPixelCenterToScene(centerX_, centerY_, x, y); |
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38 |
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39 unsigned int height = that.GetView().GetDisplayHeight(); |
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40 |
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41 if (height <= 3) |
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42 { |
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43 idle_ = true; |
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44 LOG(WARNING) << "image is too small to zoom (current height = " << height << ")"; |
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45 } |
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46 else |
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47 { |
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48 idle_ = false; |
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49 normalization_ = 1.0 / static_cast<double>(height - 1); |
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50 } |
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51 } |
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52 |
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53 |
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54 void ZoomMouseTracker::Render(CairoContext& context, |
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55 double zoom) |
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56 { |
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57 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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58 } |
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59 |
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60 |
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61 void ZoomMouseTracker::MouseMove(int displayX, |
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62 int displayY, |
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63 double x, |
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64 double y, |
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65 const std::vector<Touch>& displayTouches, |
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66 const std::vector<Touch>& sceneTouches) |
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67 { |
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68 static const double MIN_ZOOM = -4; |
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69 static const double MAX_ZOOM = 4; |
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70 |
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71 |
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72 if (!idle_) |
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73 { |
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74 double dy = static_cast<double>(displayY - downY_) * normalization_; // In the range [-1,1] |
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75 double z; |
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76 |
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77 // Linear interpolation from [-1, 1] to [MIN_ZOOM, MAX_ZOOM] |
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78 if (dy < -1.0) |
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79 { |
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80 z = MIN_ZOOM; |
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81 } |
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82 else if (dy > 1.0) |
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83 { |
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84 z = MAX_ZOOM; |
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85 } |
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86 else |
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87 { |
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88 z = MIN_ZOOM + (MAX_ZOOM - MIN_ZOOM) * (dy + 1.0) / 2.0; |
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89 } |
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90 |
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91 z = pow(2.0, z); |
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92 |
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93 ViewportGeometry view = that_.GetView(); |
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94 |
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95 view.SetZoom(z * originalZoom_); |
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96 |
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97 // Correct the pan so that the original click point is kept at |
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98 // the same location on the display |
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99 double panX, panY; |
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100 view.GetPan(panX, panY); |
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101 |
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102 int tx, ty; |
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103 view.MapSceneToDisplay(tx, ty, centerX_, centerY_); |
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104 view.SetPan(panX + static_cast<double>(downX_ - tx), |
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105 panY + static_cast<double>(downY_ - ty)); |
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106 |
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107 that_.SetView(view); |
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108 } |
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109 } |
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110 } |