Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Scene2DViewport/ViewportController.cpp @ 1721:d4a8e2b19a65

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new "GrayscaleWindowingChanged" message from GrayscaleWindowingSceneTracker
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 01 Dec 2020 12:51:57 +0100
parents 52b8b96cb55f
children 7b17090ed2ab
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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) 2017-2020 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 Lesser 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 * Lesser 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 Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22 #include "ViewportController.h"
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23
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24 #include "../StoneException.h" // For ORTHANC_ASSERT
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25 #include "MeasureCommands.h"
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26 #include "UndoStack.h"
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27
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28 #include <boost/make_shared.hpp>
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29
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30 namespace OrthancStone
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31 {
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32 ViewportController::ViewportController(boost::weak_ptr<IViewport> viewport)
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33 : viewport_(viewport)
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34 , scene_(new Scene2D)
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35 , canvasToSceneFactor_(1)
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36 {
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37 // undoStack_ is not default-initialized, which basically means empty.
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38 // The controller must be able to cope with this.
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39 }
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40
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41 ViewportController::~ViewportController()
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42 {
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43 }
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44
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45 void ViewportController::PushCommand(
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46 boost::shared_ptr<MeasureCommand> command)
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47 {
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48 boost::shared_ptr<UndoStack> undoStack = undoStackW_.lock();
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49 if (undoStack.get() != NULL)
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50 {
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51 undoStack->PushCommand(command);
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52 }
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53 else
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54 {
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55 LOG(ERROR) << "Internal error: no undo stack!";
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56 }
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57 }
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59 void ViewportController::Undo()
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60 {
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61 boost::shared_ptr<UndoStack> undoStack = undoStackW_.lock();
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62 if (undoStack.get() != NULL)
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64 undoStack->Undo();
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65 }
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66 else
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67 {
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68 LOG(ERROR) << "Internal error: no undo stack!";
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69 }
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70 }
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72 void ViewportController::Redo()
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74 boost::shared_ptr<UndoStack> undoStack = undoStackW_.lock();
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75 if (undoStack.get() != NULL)
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77 undoStack->Redo();
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78 }
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79 else
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80 {
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81 LOG(ERROR) << "Internal error: no undo stack!";
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82 }
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83 }
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84
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85 bool ViewportController::CanUndo() const
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87 boost::shared_ptr<UndoStack> undoStack = undoStackW_.lock();
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88 if (undoStack.get() != NULL)
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90 return undoStack->CanUndo();
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91 }
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92 else
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93 {
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94 LOG(ERROR) << "Internal error: no undo stack!";
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95 return false;
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96 }
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97 }
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98
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99 bool ViewportController::CanRedo() const
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100 {
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101 boost::shared_ptr<UndoStack> undoStack = undoStackW_.lock();
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102 if (undoStack.get() != NULL)
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104 return undoStack->CanRedo();
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105 }
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106 else
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107 {
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108 LOG(ERROR) << "Internal error: no undo stack!";
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109 return false;
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110 }
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111 }
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112
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113 std::vector<boost::shared_ptr<MeasureTool> >
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114 ViewportController::HitTestMeasureTools(ScenePoint2D p)
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115 {
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116 std::vector<boost::shared_ptr<MeasureTool> > ret;
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117
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118 for (size_t i = 0; i < measureTools_.size(); ++i)
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119 {
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120 if (measureTools_[i]->HitTest(p))
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121 ret.push_back(measureTools_[i]);
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122 }
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123 return ret;
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124 }
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125
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126 void ViewportController::ResetMeasuringToolsHighlight()
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127 {
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128 for (size_t i = 0; i < measureTools_.size(); ++i)
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129 {
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130 measureTools_[i]->ResetHighlightState();
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131 }
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132 }
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133
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134 AffineTransform2D
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135 ViewportController::GetCanvasToSceneTransform() const
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136 {
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137 return scene_->GetCanvasToSceneTransform();
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138 }
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139
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140 AffineTransform2D
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141 ViewportController::GetSceneToCanvasTransform() const
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142 {
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143 return scene_->GetSceneToCanvasTransform();
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144 }
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145
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146 void ViewportController::SetSceneToCanvasTransform(
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147 const AffineTransform2D& transform)
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148 {
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149 scene_->SetSceneToCanvasTransform(transform);
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150
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151 canvasToSceneFactor_ = scene_->GetCanvasToSceneTransform().ComputeZoom();
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152 BroadcastMessage(SceneTransformChanged(*this));
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153 }
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154
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155 void ViewportController::BroadcastGrayscaleWindowingChanged(double windowingCenter,
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156 double windowingWidth)
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157 {
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158 BroadcastMessage(GrayscaleWindowingChanged(*this, windowingCenter, windowingWidth));
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159 }
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160
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161 void ViewportController::FitContent(unsigned int viewportWidth,
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162 unsigned int viewportHeight)
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163 {
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164 scene_->FitContent(viewportWidth, viewportHeight);
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165 canvasToSceneFactor_ = scene_->GetCanvasToSceneTransform().ComputeZoom();
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166 BroadcastMessage(SceneTransformChanged(*this));
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167 }
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168
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169 void ViewportController::AddMeasureTool(
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170 boost::shared_ptr<MeasureTool> measureTool)
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171 {
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172 ORTHANC_ASSERT(std::find(measureTools_.begin(),
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173 measureTools_.end(),
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174 measureTool) == measureTools_.end(),
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175 "Duplicate measure tool");
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176 measureTools_.push_back(measureTool);
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177 }
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178
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179 void ViewportController::RemoveMeasureTool(
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180 boost::shared_ptr<MeasureTool> measureTool)
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181 {
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182 ORTHANC_ASSERT(std::find(measureTools_.begin(),
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183 measureTools_.end(),
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184 measureTool) != measureTools_.end(),
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185 "Measure tool not found");
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186 measureTools_.erase(
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187 std::remove(measureTools_.begin(), measureTools_.end(), measureTool),
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188 measureTools_.end());
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189 }
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190
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191 double ViewportController::GetCanvasToSceneFactor() const
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192 {
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193 return canvasToSceneFactor_;
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194 }
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195
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196 double ViewportController::GetHandleSideLengthS() const
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197 {
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198 return HANDLE_SIDE_LENGTH_CANVAS_COORD * GetCanvasToSceneFactor();
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199 }
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200
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201 double ViewportController::GetAngleToolArcRadiusS() const
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202 {
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203 return ARC_RADIUS_CANVAS_COORD * GetCanvasToSceneFactor();
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204 }
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205
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206 double ViewportController::GetHitTestMaximumDistanceS() const
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207 {
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208 return HIT_TEST_MAX_DISTANCE_CANVAS_COORD * GetCanvasToSceneFactor();
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209 }
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diff changeset
210
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211 double ViewportController::GetAngleTopTextLabelDistanceS() const
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212 {
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213 return TEXT_CENTER_DISTANCE_CANVAS_COORD * GetCanvasToSceneFactor();
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214 }
1208
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215
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216
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217 void ViewportController::HandleMousePress(IViewportInteractor& interactor,
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218 const PointerEvent& event,
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219 unsigned int viewportWidth,
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220 unsigned int viewportHeight)
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221 {
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222 if (activeTracker_)
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223 {
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224 // We are dealing with a multi-stage tracker (that is made of several
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225 // interactions)
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226 activeTracker_->PointerDown(event);
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227
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228 if (!activeTracker_->IsAlive())
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229 {
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230 activeTracker_.reset();
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231 }
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232 }
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233 else
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234 {
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235 // Check whether there is already a measure tool at that position
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236 for (size_t i = 0; i < measureTools_.size(); ++i)
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237 {
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238 if (measureTools_[i]->HitTest(event.GetMainPosition()))
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239 {
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240 activeTracker_ = measureTools_[i]->CreateEditionTracker(event);
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241 return;
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242 }
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243 }
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244
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245 // No measure tool, create new tracker from the interactor
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246 activeTracker_.reset(interactor.CreateTracker(viewport_,
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247 event,
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248 viewportWidth,
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249 viewportHeight));
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250 }
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251 }
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252
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253 bool ViewportController::HandleMouseMove(const PointerEvent& event)
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254 {
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255 if (activeTracker_)
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256 {
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257 activeTracker_->PointerMove(event);
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258 return true;
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259 }
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260 else
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261 {
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262 return false;
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263 }
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264 }
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265
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266 void ViewportController::HandleMouseRelease(const PointerEvent& event)
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267 {
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268 if (activeTracker_)
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269 {
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270 activeTracker_->PointerUp(event);
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271
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272 if (!activeTracker_->IsAlive())
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273 {
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274 activeTracker_.reset();
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275 }
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276 }
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277 }
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278 }