1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: G4RTXScanner.cc,v 1.7 2009/09/16 16:56:52 allison Exp $ |
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28 | // GEANT4 tag $Name: $ |
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29 | // |
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30 | // |
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31 | |
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32 | #ifdef G4VIS_BUILD_RAYTRACERX_DRIVER |
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33 | |
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34 | #include "G4RTXScanner.hh" |
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35 | |
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36 | #include "G4TheRayTracer.hh" |
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37 | #include "G4RayTracerXViewer.hh" |
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38 | #include "G4ViewParameters.hh" |
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39 | #include <X11/Xlib.h> |
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40 | #include <X11/Xutil.h> |
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41 | #include <X11/Xatom.h> |
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42 | |
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43 | extern "C" { |
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44 | Bool G4RayTracerXScannerWaitForNotify (Display*, XEvent* e, char* arg) { |
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45 | return (e->type == MapNotify) && (e->xmap.window == (Window) arg); |
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46 | } |
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47 | } |
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48 | |
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49 | G4RTXScanner::G4RTXScanner(): |
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50 | theNRow(0), theNColumn(0), theIRow(0), theIColumn(0) |
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51 | { |
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52 | theGSName = "RayTracerX"; |
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53 | theGSNickname = "RayTracerX"; |
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54 | } |
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55 | |
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56 | const G4String& G4RTXScanner::GetGSName() const |
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57 | {return theGSName;} |
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58 | |
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59 | const G4String& G4RTXScanner::GetGSNickname() const |
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60 | {return theGSNickname;} |
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61 | |
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62 | void G4RTXScanner::Initialize(G4int nRow, G4int nColumn) { |
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63 | theNRow = nRow; |
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64 | theNColumn = nColumn; |
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65 | G4int nMax = std::max (nRow, nColumn); |
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66 | theStep = 1; |
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67 | if (nMax > 3) { |
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68 | for (;;) { |
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69 | theStep *= 3; |
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70 | if (theStep > nMax) break; |
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71 | } |
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72 | } |
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73 | theIRow = theStep / 2; |
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74 | theIColumn = theStep / 2 - theStep; |
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75 | } |
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76 | |
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77 | G4bool G4RTXScanner::Coords(G4int& iRow, G4int& iColumn) |
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78 | { |
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79 | // Increment column... |
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80 | theIColumn += theStep; |
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81 | |
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82 | // Skip coordinates covered in the previous scan... |
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83 | if ((theIColumn + (3 * theStep) / 2 + 1)%(3 * theStep) == 0 && |
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84 | (theIRow + (3 * theStep) / 2 + 1)%(3 * theStep) == 0) |
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85 | theIColumn += theStep; |
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86 | |
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87 | // If necessary, increment row... |
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88 | if (theIColumn >= theNColumn) { |
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89 | theIColumn = theStep / 2; |
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90 | theIRow += theStep; |
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91 | } |
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92 | |
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93 | // Return if finished... |
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94 | if (theIRow >= theNRow && theStep <= 1) return false; |
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95 | |
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96 | // Start next scan if necessary... |
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97 | if (theIRow >= theNRow) { |
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98 | theStep /= 3; |
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99 | theIRow = theStep / 2; |
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100 | theIColumn = theStep / 2; |
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101 | } |
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102 | |
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103 | // Return current row and column... |
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104 | iRow = theIRow; |
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105 | iColumn = theIColumn; |
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106 | return true; |
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107 | } |
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108 | |
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109 | G4bool G4RTXScanner::GetXWindow(const G4String& name, G4ViewParameters& vp) |
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110 | { |
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111 | display = XOpenDisplay(0); // Use display defined by DISPLAY environment. |
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112 | if (!display) { |
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113 | G4cerr << "G4RTXScanner::Initialize(): cannot get display." |
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114 | << G4endl; |
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115 | return false; |
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116 | } |
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117 | |
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118 | int screen_num = DefaultScreen(display); |
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119 | |
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120 | // Window size and position... |
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121 | int xOffset = 0, yOffset = 0; |
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122 | XSizeHints* size_hints = XAllocSizeHints(); |
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123 | unsigned int width, height; |
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124 | const G4String& XGeometryString = vp.GetXGeometryString(); |
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125 | if (!XGeometryString.empty()) { |
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126 | G4int geometryResultMask = XParseGeometry |
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127 | ((char*)XGeometryString.c_str(), |
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128 | &xOffset, &yOffset, &width, &height); |
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129 | if (geometryResultMask & (WidthValue | HeightValue)) { |
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130 | if (geometryResultMask & XValue) { |
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131 | if (geometryResultMask & XNegative) { |
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132 | xOffset = DisplayWidth(display, screen_num) + xOffset - width; |
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133 | } |
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134 | size_hints->flags |= PPosition; |
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135 | size_hints->x = xOffset; |
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136 | } |
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137 | if (geometryResultMask & YValue) { |
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138 | if (geometryResultMask & YNegative) { |
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139 | yOffset = DisplayHeight(display, screen_num) + yOffset - height; |
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140 | } |
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141 | size_hints->flags |= PPosition; |
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142 | size_hints->y = yOffset; |
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143 | } |
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144 | } else { |
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145 | G4cout << "ERROR: Geometry string \"" |
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146 | << XGeometryString |
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147 | << "\" invalid. Using \"600x600\"." |
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148 | << G4endl; |
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149 | width = 600; |
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150 | height = 600; |
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151 | } |
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152 | } else { |
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153 | G4cout << "ERROR: Geometry string \"" |
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154 | << XGeometryString |
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155 | << "\" is empty. Using \"600x600\"." |
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156 | << G4endl; |
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157 | width = 600; |
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158 | height = 600; |
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159 | } |
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160 | size_hints->width = width; |
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161 | size_hints->height = height; |
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162 | size_hints->flags |= PSize; |
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163 | |
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164 | win = XCreateSimpleWindow |
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165 | (display, RootWindow(display, screen_num), |
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166 | xOffset, yOffset, width, height, |
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167 | 0, // Border width. |
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168 | WhitePixel(display, screen_num), // Border colour. |
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169 | BlackPixel(display, screen_num)); // Background colour. |
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170 | |
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171 | XGCValues values; |
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172 | gc = XCreateGC(display, win, 0, &values); |
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173 | |
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174 | int nMaps; |
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175 | Status status = XGetRGBColormaps |
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176 | (display, RootWindow(display, screen_num), |
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177 | &scmap, &nMaps, XA_RGB_BEST_MAP); |
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178 | if (!status) { |
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179 | system("xstdcmap -best"); // ...and try again... |
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180 | Status status = XGetRGBColormaps |
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181 | (display, RootWindow(display, screen_num), |
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182 | &scmap, &nMaps, XA_RGB_BEST_MAP); |
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183 | if (!status) { |
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184 | G4cerr << |
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185 | "G4RTXScanner::Initialize(): cannot get color map." |
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186 | "\n Perhaps your system does not support RGB_BEST_MAP." |
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187 | << G4endl; |
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188 | return false; |
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189 | } |
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190 | } |
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191 | if (!scmap->colormap) { |
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192 | G4cerr << "G4RTXScanner::Initialize(): color map empty." |
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193 | << G4endl; |
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194 | return false; |
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195 | } |
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196 | |
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197 | XWMHints* wm_hints = XAllocWMHints(); |
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198 | XClassHint* class_hint = XAllocClassHint(); |
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199 | const char* window_name = name.c_str(); |
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200 | XTextProperty windowName; |
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201 | XStringListToTextProperty((char**)&window_name, 1, &windowName); |
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202 | |
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203 | XSetWMProperties(display, win, &windowName, &windowName, |
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204 | 0, 0, size_hints, wm_hints, class_hint); |
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205 | |
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206 | XMapWindow(display, win); |
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207 | |
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208 | // Wait for window to appear (wait for an "map notify" event). |
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209 | XSelectInput(display, win, StructureNotifyMask); |
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210 | XEvent event; |
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211 | XIfEvent (display, &event, G4RayTracerXScannerWaitForNotify, (char*) win); |
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212 | |
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213 | return true; |
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214 | } |
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215 | |
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216 | void G4RTXScanner::Draw |
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217 | (unsigned char red, unsigned char green, unsigned char blue) |
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218 | // Draw coloured square at current position. |
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219 | { |
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220 | unsigned long pixel_value = scmap->base_pixel + |
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221 | ((unsigned long) ((red * scmap->red_max) / 256.) * scmap->red_mult) + |
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222 | ((unsigned long) ((green * scmap->green_max) / 256.) * scmap->green_mult) + |
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223 | ((unsigned long) ((blue * scmap->blue_max) / 256.) * scmap->blue_mult); |
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224 | XSetForeground(display, gc, pixel_value); |
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225 | |
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226 | if (theStep > 1) { |
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227 | XFillRectangle(display, win, gc, |
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228 | theIColumn - theStep / 2, |
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229 | theIRow - theStep / 2, |
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230 | theStep, theStep); |
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231 | } else { |
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232 | XDrawPoint(display, win, gc, theIColumn, theIRow); |
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233 | } |
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234 | |
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235 | XFlush(display); |
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236 | } |
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237 | |
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238 | #endif |
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