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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 "ParallelSlicesCursor.h"
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34
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16
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35 #include "../../Resources/Orthanc/Core/OrthancException.h"
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0
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36
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37 namespace OrthancStone
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38 {
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39 size_t ParallelSlicesCursor::GetDefaultSlice()
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40 {
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41 if (slices_.get() == NULL)
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42 {
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43 return 0;
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44 }
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45 else
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46 {
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47 return slices_->GetSliceCount() / 2;
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48 }
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49 }
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50
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51
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52 size_t ParallelSlicesCursor::GetSliceCount()
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53 {
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54 boost::mutex::scoped_lock lock(mutex_);
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55
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56 if (slices_.get() == NULL)
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57 {
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58 return 0;
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59 }
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60 else
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61 {
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62 return slices_->GetSliceCount();
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63 }
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64 }
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65
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66
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67 SliceGeometry ParallelSlicesCursor::GetSlice(size_t slice)
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68 {
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69 boost::mutex::scoped_lock lock(mutex_);
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70
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71 if (slices_.get() == NULL)
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72 {
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73 return SliceGeometry();
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74 }
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75 else
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76 {
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77 return slices_->GetSlice(slice);
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78 }
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79 }
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80
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81
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82 void ParallelSlicesCursor::SetGeometry(const ParallelSlices& slices)
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83 {
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84 boost::mutex::scoped_lock lock(mutex_);
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85
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86 slices_.reset(new ParallelSlices(slices));
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87
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88 currentSlice_ = GetDefaultSlice();
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89 }
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90
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91
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92 SliceGeometry ParallelSlicesCursor::GetCurrentSlice()
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93 {
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94 boost::mutex::scoped_lock lock(mutex_);
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95
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96 if (slices_.get() != NULL &&
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97 currentSlice_ < slices_->GetSliceCount())
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98 {
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99 return slices_->GetSlice(currentSlice_);
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100 }
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101 else
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102 {
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103 return SliceGeometry(); // No slice is available, return the canonical geometry
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104 }
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105 }
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106
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107
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108 bool ParallelSlicesCursor::SetDefaultSlice()
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109 {
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110 boost::mutex::scoped_lock lock(mutex_);
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111
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112 size_t slice = GetDefaultSlice();
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113
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114 if (currentSlice_ != slice)
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115 {
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116 currentSlice_ = slice;
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117 return true;
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118 }
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119 else
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120 {
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121 return false;
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122 }
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123 }
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124
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125
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126 bool ParallelSlicesCursor::ApplyOffset(SliceOffsetMode mode,
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127 int offset)
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128 {
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129 boost::mutex::scoped_lock lock(mutex_);
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130
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131 if (slices_.get() == NULL)
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132 {
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133 return false;
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134 }
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135
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136 int count = slices_->GetSliceCount();
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137 if (count == 0)
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138 {
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139 return false;
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140 }
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141
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142 int slice;
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143 if (static_cast<int>(currentSlice_) >= count)
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144 {
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145 slice = count - 1;
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146 }
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147 else
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148 {
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149 slice = currentSlice_;
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150 }
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151
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152 switch (mode)
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153 {
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154 case SliceOffsetMode_Absolute:
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155 {
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156 slice = offset;
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157 break;
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158 }
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159
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160 case SliceOffsetMode_Relative:
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161 {
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162 slice += offset;
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163 break;
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164 }
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165
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166 case SliceOffsetMode_Loop:
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167 {
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168 slice += offset;
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169 while (slice < 0)
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170 {
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171 slice += count;
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172 }
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173
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174 while (slice >= count)
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175 {
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176 slice -= count;
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177 }
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178
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179 break;
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180 }
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181
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182 default:
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183 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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184 }
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185
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186 if (slice < 0)
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187 {
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188 slice = 0;
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189 }
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190
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191 if (slice >= count)
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192 {
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193 slice = count - 1;
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194 }
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195
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196 if (slice != static_cast<int>(currentSlice_))
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197 {
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198 currentSlice_ = static_cast<int>(slice);
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199 return true;
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200 }
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201 else
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202 {
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203 return false;
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204 }
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205 }
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206
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207
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208 bool ParallelSlicesCursor::ApplyWheelEvent(MouseWheelDirection direction,
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209 KeyboardModifiers modifiers)
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210 {
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211 int offset = (modifiers & KeyboardModifiers_Control ? 10 : 1);
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212
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213 switch (direction)
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214 {
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215 case MouseWheelDirection_Down:
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216 return ApplyOffset(SliceOffsetMode_Relative, -offset);
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217
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218 case MouseWheelDirection_Up:
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219 return ApplyOffset(SliceOffsetMode_Relative, offset);
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220
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221 default:
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222 return false;
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223 }
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224 }
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225
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226
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227 bool ParallelSlicesCursor::LookupSliceContainingPoint(const Vector& p)
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228 {
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229 boost::mutex::scoped_lock lock(mutex_);
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230
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231 size_t slice;
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232 double distance;
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233
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234 if (slices_.get() != NULL &&
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235 slices_->ComputeClosestSlice(slice, distance, p))
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236 {
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237 if (currentSlice_ != slice)
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238 {
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239 currentSlice_ = slice;
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240 return true;
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241 }
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242 }
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243
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244 return false;
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245 }
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246 }
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