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0
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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 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "LayoutWidget.h"
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34
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35 #include "../Orthanc/Core/Logging.h"
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36 #include "../Orthanc/Core/OrthancException.h"
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37
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38 #include <boost/math/special_functions/round.hpp>
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39
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40 namespace OrthancStone
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41 {
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42 class LayoutWidget::LayoutMouseTracker : public IMouseTracker
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43 {
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44 private:
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45 std::auto_ptr<IMouseTracker> tracker_;
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46 int left_;
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47 int top_;
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48 unsigned int width_;
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49 unsigned int height_;
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50
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51 public:
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52 LayoutMouseTracker(IMouseTracker* tracker,
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53 int left,
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54 int top,
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55 unsigned int width,
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56 unsigned int height) :
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57 tracker_(tracker),
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58 left_(left),
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59 top_(top),
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60 width_(width),
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61 height_(height)
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62 {
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63 if (tracker == NULL)
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64 {
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65 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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66 }
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67 }
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68
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69 virtual void Render(Orthanc::ImageAccessor& surface)
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70 {
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71 Orthanc::ImageAccessor accessor = surface.GetRegion(left_, top_, width_, height_);
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72 tracker_->Render(accessor);
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73 }
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74
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75 virtual void MouseUp()
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76 {
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77 tracker_->MouseUp();
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78 }
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79
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80 virtual void MouseMove(int x,
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81 int y)
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82 {
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83 tracker_->MouseMove(x - left_, y - top_);
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84 }
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85 };
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86
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87
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88 class LayoutWidget::ChildWidget : public boost::noncopyable
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89 {
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90 private:
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91 std::auto_ptr<IWidget> widget_;
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92 int left_;
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93 int top_;
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94 unsigned int width_;
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95 unsigned int height_;
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96
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97 public:
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98 ChildWidget(IWidget* widget) :
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99 widget_(widget)
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100 {
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101 assert(widget != NULL);
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102 SetEmpty();
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103 }
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104
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105 IWidget& GetWidget() const
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106 {
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107 return *widget_;
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108 }
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109
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110 void SetRectangle(unsigned int left,
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111 unsigned int top,
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112 unsigned int width,
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113 unsigned int height)
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114 {
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115 left_ = left;
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116 top_ = top;
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117 width_ = width;
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118 height_ = height;
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119
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120 widget_->SetSize(width, height);
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121 }
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122
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123 void SetEmpty()
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124 {
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125 SetRectangle(0, 0, 0, 0);
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126 }
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127
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128 bool Contains(int x,
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129 int y) const
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130 {
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131 return (x >= left_ &&
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132 y >= top_ &&
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133 x < left_ + static_cast<int>(width_) &&
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134 y < top_ + static_cast<int>(height_));
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135 }
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136
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137 bool Render(Orthanc::ImageAccessor& target)
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138 {
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139 if (width_ == 0 ||
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140 height_ == 0)
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141 {
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142 return true;
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143 }
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144 else
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145 {
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146 Orthanc::ImageAccessor accessor = target.GetRegion(left_, top_, width_, height_);
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147 return widget_->Render(accessor);
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148 }
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149 }
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150
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151 IMouseTracker* CreateMouseTracker(MouseButton button,
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152 int x,
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153 int y,
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154 KeyboardModifiers modifiers)
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155 {
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156 if (Contains(x, y))
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157 {
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158 IMouseTracker* tracker = widget_->CreateMouseTracker(button,
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159 x - left_,
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160 y - top_,
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161 modifiers);
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162 if (tracker)
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163 {
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164 return new LayoutMouseTracker(tracker, left_, top_, width_, height_);
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165 }
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166 }
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167
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168 return NULL;
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169 }
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170
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171 void RenderMouseOver(Orthanc::ImageAccessor& target,
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172 int x,
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173 int y)
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174 {
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175 if (Contains(x, y))
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176 {
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177 Orthanc::ImageAccessor accessor = target.GetRegion(left_, top_, width_, height_);
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178
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179 widget_->RenderMouseOver(accessor, x - left_, y - top_);
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180 }
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181 }
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182
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183 void MouseWheel(MouseWheelDirection direction,
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184 int x,
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185 int y,
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186 KeyboardModifiers modifiers)
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187 {
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188 if (Contains(x, y))
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189 {
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190 widget_->MouseWheel(direction, x - left_, y - top_, modifiers);
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191 }
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192 }
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193 };
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194
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195
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196 void LayoutWidget::ComputeChildrenExtents()
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197 {
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198 if (children_.size() == 0)
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199 {
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200 return;
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201 }
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202
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203 float internal = static_cast<float>(paddingInternal_);
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204
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205 if (width_ <= paddingLeft_ + paddingRight_ ||
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206 height_ <= paddingTop_ + paddingBottom_)
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207 {
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208 for (size_t i = 0; i < children_.size(); i++)
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209 {
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210 children_[i]->SetEmpty();
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211 }
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212 }
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213 else if (isHorizontal_)
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214 {
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215 unsigned int padding = paddingLeft_ + paddingRight_ + (children_.size() - 1) * paddingInternal_;
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216 float childWidth = ((static_cast<float>(width_) - static_cast<float>(padding)) /
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217 static_cast<float>(children_.size()));
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218
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219 for (size_t i = 0; i < children_.size(); i++)
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220 {
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221 float left = static_cast<float>(paddingLeft_) + static_cast<float>(i) * (childWidth + internal);
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222 float right = left + childWidth;
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223
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224 if (left >= right)
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225 {
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226 children_[i]->SetEmpty();
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227 }
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228 else
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229 {
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230 children_[i]->SetRectangle(static_cast<unsigned int>(left),
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231 paddingTop_,
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232 boost::math::iround(right - left),
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233 height_ - paddingTop_ - paddingBottom_);
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234 }
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235 }
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236 }
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237 else
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238 {
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239 unsigned int padding = paddingTop_ + paddingBottom_ + (children_.size() - 1) * paddingInternal_;
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240 float childHeight = ((static_cast<float>(height_) - static_cast<float>(padding)) /
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241 static_cast<float>(children_.size()));
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242
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243 for (size_t i = 0; i < children_.size(); i++)
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244 {
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245 float top = static_cast<float>(paddingTop_) + static_cast<float>(i) * (childHeight + internal);
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246 float bottom = top + childHeight;
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247
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248 if (top >= bottom)
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249 {
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250 children_[i]->SetEmpty();
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251 }
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252 else
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253 {
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254 children_[i]->SetRectangle(paddingTop_,
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255 static_cast<unsigned int>(top),
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256 width_ - paddingLeft_ - paddingRight_,
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257 boost::math::iround(bottom - top));
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258 }
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259 }
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260 }
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261
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262 NotifyChange(*this);
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263 }
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264
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265
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266 void LayoutWidget::UpdateStep()
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267 {
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268 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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269 }
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270
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271
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272 LayoutWidget::LayoutWidget() :
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273 isHorizontal_(true),
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274 started_(false),
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275 width_(0),
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276 height_(0),
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277 paddingLeft_(0),
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278 paddingTop_(0),
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279 paddingRight_(0),
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280 paddingBottom_(0),
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281 paddingInternal_(0)
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282 {
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283 }
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284
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285
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286 LayoutWidget::~LayoutWidget()
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287 {
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288 for (size_t i = 0; i < children_.size(); i++)
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289 {
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290 children_[i]->GetWidget().Unregister(*this);
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291 delete children_[i];
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292 }
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293 }
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294
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295
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296 void LayoutWidget::NotifyChange(const IWidget& widget)
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297 {
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298 // One of the children has changed
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299 WidgetBase::NotifyChange();
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300 }
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301
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302
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303 void LayoutWidget::SetHorizontal()
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304 {
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305 isHorizontal_ = true;
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306 ComputeChildrenExtents();
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307 }
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308
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309
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310 void LayoutWidget::SetVertical()
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311 {
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312 isHorizontal_ = false;
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313 ComputeChildrenExtents();
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314 }
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315
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316
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317 void LayoutWidget::SetPadding(unsigned int left,
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318 unsigned int top,
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319 unsigned int right,
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320 unsigned int bottom,
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321 unsigned int spacing)
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322 {
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323 paddingLeft_ = left;
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324 paddingTop_ = top;
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325 paddingRight_ = right;
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326 paddingBottom_ = bottom;
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327 paddingInternal_ = spacing;
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328 }
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329
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330
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331 void LayoutWidget::SetPadding(unsigned int padding)
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332 {
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333 paddingLeft_ = padding;
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334 paddingTop_ = padding;
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335 paddingRight_ = padding;
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336 paddingBottom_ = padding;
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337 paddingInternal_ = padding;
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338 }
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339
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340
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341 IWidget& LayoutWidget::AddWidget(IWidget* widget) // Takes ownership
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342 {
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343 if (started_)
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344 {
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345 LOG(ERROR) << "Cannot add child once Start() has been invoked";
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346 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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347 }
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348
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349 if (widget == NULL)
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350 {
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351 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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352 }
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353
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354 if (GetStatusBar() != NULL)
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355 {
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356 widget->SetStatusBar(*GetStatusBar());
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357 }
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358 else
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359 {
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360 widget->ResetStatusBar();
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361 }
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362
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363 children_.push_back(new ChildWidget(widget));
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364 widget->Register(*this);
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365
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366 ComputeChildrenExtents();
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367
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368 return *widget;
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369 }
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370
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371
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372 void LayoutWidget::SetStatusBar(IStatusBar& statusBar)
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373 {
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374 WidgetBase::SetStatusBar(statusBar);
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375
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376 for (size_t i = 0; i < children_.size(); i++)
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377 {
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378 children_[i]->GetWidget().SetStatusBar(statusBar);
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379 }
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380 }
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381
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382
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383 void LayoutWidget::ResetStatusBar()
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384 {
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385 WidgetBase::ResetStatusBar();
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386
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387 for (size_t i = 0; i < children_.size(); i++)
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388 {
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389 children_[i]->GetWidget().ResetStatusBar();
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390 }
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391 }
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392
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393
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394 void LayoutWidget::Start()
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395 {
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396 for (size_t i = 0; i < children_.size(); i++)
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397 {
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398 children_[i]->GetWidget().Start();
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399 }
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400
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401 WidgetBase::Start();
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402 }
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403
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404
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405 void LayoutWidget::Stop()
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406 {
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407 WidgetBase::Stop();
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408
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409 for (size_t i = 0; i < children_.size(); i++)
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410 {
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411 children_[i]->GetWidget().Stop();
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412 }
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413 }
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414
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415
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416 void LayoutWidget::SetSize(unsigned int width,
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417 unsigned int height)
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418 {
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419 width_ = width;
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420 height_ = height;
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421 ComputeChildrenExtents();
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422 }
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423
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424
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425 bool LayoutWidget::Render(Orthanc::ImageAccessor& surface)
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426 {
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427 if (!WidgetBase::Render(surface))
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428 {
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429 return false;
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430 }
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431
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432 for (size_t i = 0; i < children_.size(); i++)
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433 {
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434 if (!children_[i]->Render(surface))
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435 {
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436 return false;
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437 }
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438 }
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439
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440 return true;
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441 }
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442
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443
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444 IMouseTracker* LayoutWidget::CreateMouseTracker(MouseButton button,
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445 int x,
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446 int y,
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447 KeyboardModifiers modifiers)
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448 {
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449 for (size_t i = 0; i < children_.size(); i++)
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450 {
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451 IMouseTracker* tracker = children_[i]->CreateMouseTracker(button, x, y, modifiers);
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452 if (tracker != NULL)
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453 {
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454 return tracker;
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455 }
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456 }
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457
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458 return NULL;
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459 }
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460
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461
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462 void LayoutWidget::RenderMouseOver(Orthanc::ImageAccessor& target,
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463 int x,
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464 int y)
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465 {
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466 for (size_t i = 0; i < children_.size(); i++)
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467 {
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468 children_[i]->RenderMouseOver(target, x, y);
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469 }
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470 }
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471
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472
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473 void LayoutWidget::MouseWheel(MouseWheelDirection direction,
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474 int x,
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475 int y,
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476 KeyboardModifiers modifiers)
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477 {
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478 for (size_t i = 0; i < children_.size(); i++)
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479 {
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480 children_[i]->MouseWheel(direction, x, y, modifiers);
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481 }
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482 }
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483
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484
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485 void LayoutWidget::KeyPressed(char key,
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486 KeyboardModifiers modifiers)
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487 {
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488 for (size_t i = 0; i < children_.size(); i++)
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489 {
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490 children_[i]->GetWidget().KeyPressed(key, modifiers);
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491 }
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492 }
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493 }
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