annotate Framework/Widgets/TestWorldSceneWidget.cpp @ 403:99e31898910e

IObservable.cpp
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sun, 11 Nov 2018 12:13:31 +0100
parents e33659decec5
children b70e9be013e4
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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) 2017-2018 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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21
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22 #include "TestWorldSceneWidget.h"
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23
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24 #include <Core/OrthancException.h>
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26 #include <math.h>
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27 #include <stdio.h>
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29 namespace OrthancStone
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30 {
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31 namespace Samples
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32 {
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33 class TestWorldSceneWidget::Interactor : public IWorldSceneInteractor
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34 {
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35 public:
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36 virtual IWorldSceneMouseTracker* CreateMouseTracker(WorldSceneWidget& widget,
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37 const ViewportGeometry& view,
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38 MouseButton button,
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39 KeyboardModifiers modifiers,
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40 int viewportX,
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41 int viewportY,
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42 double x,
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43 double y,
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44 IStatusBar* statusBar)
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45 {
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46 if (statusBar)
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47 {
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48 char buf[64];
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49 sprintf(buf, "X = %0.2f, Y = %0.2f", x, y);
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50 statusBar->SetMessage(buf);
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51 }
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53 return NULL;
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54 }
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56 virtual void MouseOver(CairoContext& context,
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57 WorldSceneWidget& widget,
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58 const ViewportGeometry& view,
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59 double x,
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60 double y,
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61 IStatusBar* statusBar)
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62 {
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63 double S = 0.5;
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65 if (fabs(x) <= S &&
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66 fabs(y) <= S)
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67 {
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68 cairo_t* cr = context.GetObject();
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69 cairo_set_source_rgb(cr, 1, 0, 0);
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70 cairo_rectangle(cr, -S, -S , 2.0 * S, 2.0 * S);
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71 cairo_set_line_width(cr, 1.0 / view.GetZoom());
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72 cairo_stroke(cr);
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73 }
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74 }
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76 virtual void MouseWheel(WorldSceneWidget& widget,
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77 MouseWheelDirection direction,
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78 KeyboardModifiers modifiers,
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79 IStatusBar* statusBar)
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80 {
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81 if (statusBar)
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82 {
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83 statusBar->SetMessage(direction == MouseWheelDirection_Down ? "Wheel down" : "Wheel up");
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84 }
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85 }
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87 virtual void KeyPressed(WorldSceneWidget& widget,
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88 KeyboardKeys key,
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89 char keyChar,
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90 KeyboardModifiers modifiers,
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91 IStatusBar* statusBar)
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92 {
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93 if (statusBar)
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94 {
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95 statusBar->SetMessage("Key pressed: \"" + std::string(1, keyChar) + "\"");
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96 }
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97 }
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98 };
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101 bool TestWorldSceneWidget::RenderScene(CairoContext& context,
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102 const ViewportGeometry& view)
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103 {
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104 cairo_t* cr = context.GetObject();
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105
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106 // Clear background
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107 cairo_set_source_rgb(cr, 0, 0, 0);
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108 cairo_paint(cr);
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109
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110 float color = static_cast<float>(count_ % 16) / 15.0f;
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111 cairo_set_source_rgb(cr, 0, 1.0f - color, color);
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112 cairo_rectangle(cr, -10, -.5, 20, 1);
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113 cairo_fill(cr);
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114
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115 return true;
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116 }
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117
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118
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119 TestWorldSceneWidget::TestWorldSceneWidget(const std::string& name, bool animate) :
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120 WorldSceneWidget(name),
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121 interactor_(new Interactor),
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122 animate_(animate),
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123 count_(0)
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124 {
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125 SetInteractor(*interactor_);
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126 }
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128
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129 Extent2D TestWorldSceneWidget::GetSceneExtent()
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130 {
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131 return Extent2D(-10, -.5, 10, .5);
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132 }
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133
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134
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135 void TestWorldSceneWidget::DoAnimation()
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136 {
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137 if (animate_)
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138 {
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139 count_++;
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140 NotifyContentChanged();
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141 }
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142 else
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143 {
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144 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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145 }
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146 }
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147 }
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148 }