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424
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1 /* Radio Widget for XEmacs.
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2 Copyright (C) 1999 Edward A. Falk
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Radio.c 1.1 */
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22
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23 /*
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24 * Radio.c - Radio button widget
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25 *
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26 * Author: Edward A. Falk
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27 * falk@falconer.vip.best.com
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442
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28 *
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424
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29 * Date: June 30, 1997
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30 *
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31 *
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32 * Overview: This widget is identical to the Toggle widget in behavior,
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33 * but completely different in appearance. This widget looks like a small
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34 * diamond-shaped button with a label to the right.
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35 *
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36 * To make this work, we subclass the Toggle widget to inherit its behavior
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37 * and to inherit the label-drawing function from which Toggle is
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38 * subclassed. We then completely replace the Expose, Set, Unset
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39 * and Highlight member functions.
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40 *
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41 * The Set and Unset actions are slightly unorthodox. In Toggle's
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42 * ClassInit function, Toggle searches the Command actions list and
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43 * "steals" the Set and Unset functions, caching pointers to them in its
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44 * class record. It then calls these functions from its own ToggleSet
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45 * and Toggle actions.
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46 *
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47 * We, in turn, override the Set() and Unset() actions in our own ClassRec.
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48 */
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49
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50
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51 #include <config.h>
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52 #include <stdio.h>
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53
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54 #include <X11/IntrinsicP.h>
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55 #include <X11/StringDefs.h>
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442
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56 #include ATHENA_XawInit_h_
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424
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57 #include "../src/xmu.h"
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58 #include "xlwradioP.h"
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59
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60 #define BOX_SIZE 13
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61
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62 #define rclass(w) ((RadioWidgetClass)((w)->core.widget_class))
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63
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64
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65 #ifdef _ThreeDP_h
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66 #define swid(rw) ((rw)->threeD.shadow_width)
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67 #else
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68 #define swid(rw) ((rw)->core.border_width)
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69 #endif
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70
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71 #define bsize(rw) (rclass(rw)->radio_class.dsize)
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72 #define bs(rw) (bsize(rw) + 2*swid(rw))
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73
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74
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75
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76 /****************************************************************
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77 *
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78 * Full class record constant
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79 *
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80 ****************************************************************/
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81
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82 /* The translations table from Toggle do not need to be
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83 * overridden by Radio
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84 */
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85
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86
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87 /* Member functions */
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88
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89 static void RadioInit (Widget, Widget, ArgList, Cardinal *);
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90 static void RadioExpose (Widget, XEvent *, Region);
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91 static void RadioResize (Widget);
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92 static void RadioDestroy (Widget, XtPointer, XtPointer);
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93 static void RadioClassInit (void);
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94 static void RadioClassPartInit (WidgetClass);
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95 static Boolean RadioSetValues (Widget, Widget, Widget, ArgList, Cardinal *);
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96 static void DrawDiamond (Widget);
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97 static XtGeometryResult RadioQueryGeometry (Widget, XtWidgetGeometry *,
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98 XtWidgetGeometry *);
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99
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100 /* Action procs */
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101
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102 static void RadioHighlight (Widget, XEvent *, String *, Cardinal *);
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103 static void RadioUnhighlight (Widget, XEvent *, String *, Cardinal *);
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104
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105 /* internal privates */
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106
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107 static void RadioSize (RadioWidget, Dimension *, Dimension *);
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108
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109 /* The actions table from Toggle is almost perfect, but we need
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110 * to override Highlight, Set, and Unset.
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111 */
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112
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113 static XtActionsRec actionsList[] =
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114 {
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115 {"highlight", RadioHighlight},
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116 {"unhighlight", RadioUnhighlight},
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117 };
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118
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119 #define SuperClass ((ToggleWidgetClass)&toggleClassRec)
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120
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121 RadioClassRec radioClassRec = {
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122 {
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442
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123 (WidgetClass) SuperClass, /* superclass */
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424
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124 "Radio", /* class_name */
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125 sizeof(RadioRec), /* size */
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126 RadioClassInit, /* class_initialize */
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127 RadioClassPartInit, /* class_part_initialize */
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128 FALSE, /* class_inited */
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129 RadioInit, /* initialize */
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130 NULL, /* initialize_hook */
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131 XtInheritRealize, /* realize */
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132 actionsList, /* actions */
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133 XtNumber(actionsList), /* num_actions */
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134 NULL, /* resources */
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135 0, /* resource_count */
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136 NULLQUARK, /* xrm_class */
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137 TRUE, /* compress_motion */
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138 TRUE, /* compress_exposure */
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139 TRUE, /* compress_enterleave */
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140 FALSE, /* visible_interest */
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141 NULL, /* destroy */
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142 RadioResize, /* resize */
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143 RadioExpose, /* expose */
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144 RadioSetValues, /* set_values */
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145 NULL, /* set_values_hook */
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146 XtInheritSetValuesAlmost, /* set_values_almost */
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147 NULL, /* get_values_hook */
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148 NULL, /* accept_focus */
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149 XtVersion, /* version */
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150 NULL, /* callback_private */
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151 XtInheritTranslations, /* tm_table */
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152 RadioQueryGeometry, /* query_geometry */
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153 XtInheritDisplayAccelerator, /* display_accelerator */
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154 NULL /* extension */
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155 }, /* CoreClass fields initialization */
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156 {
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442
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157 XtInheritChangeSensitive /* change_sensitive */
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424
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158 }, /* SimpleClass fields initialization */
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159 #ifdef _ThreeDP_h
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160 {
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161 XtInheritXaw3dShadowDraw /* field not used */
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162 }, /* ThreeDClass fields initialization */
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163 #endif
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164 {
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165 0 /* field not used */
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166 }, /* LabelClass fields initialization */
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167 {
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168 0 /* field not used */
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169 }, /* CommandClass fields initialization */
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170 {
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171 RadioSet, /* Set Procedure. */
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172 RadioUnset, /* Unset Procedure. */
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173 NULL /* extension. */
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174 }, /* ToggleClass fields initialization */
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175 {
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176 BOX_SIZE,
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177 DrawDiamond, /* draw procedure */
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178 NULL /* extension. */
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179 } /* RadioClass fields initialization */
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180 };
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181
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182 /* for public consumption */
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183 WidgetClass radioWidgetClass = (WidgetClass) &radioClassRec;
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184
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185
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186
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187
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188
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189
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190 /****************************************************************
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191 *
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192 * Class Methods
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193 *
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194 ****************************************************************/
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195
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196 static void
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197 RadioClassInit (void)
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198 {
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199 XawInitializeWidgetSet();
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200 }
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201
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202 static void
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203 RadioClassPartInit (WidgetClass class)
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204 {
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205 RadioWidgetClass c = (RadioWidgetClass) class ;
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206 RadioWidgetClass super = (RadioWidgetClass)c->core_class.superclass ;
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207
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208 if( c->radio_class.drawDiamond == NULL ||
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209 c->radio_class.drawDiamond == XtInheritDrawDiamond )
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210 {
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211 c->radio_class.drawDiamond = super->radio_class.drawDiamond ;
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212 }
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213 }
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214
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215
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216
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217
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218 /*ARGSUSED*/
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219 static void
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220 RadioInit (Widget request,
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221 Widget new,
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222 ArgList args,
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223 Cardinal *num_args)
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224 {
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225 RadioWidget rw = (RadioWidget) new;
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226 RadioWidget rw_req = (RadioWidget) request;
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227 Dimension w,h ;
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228
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229 /* Select initial size for the widget */
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230 if( rw_req->core.width == 0 || rw_req->core.height == 0 )
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231 {
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232 RadioSize(rw, &w,&h) ;
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233 if( rw_req->core.width == 0 )
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234 rw->core.width = w ;
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235 if( rw_req->core.height == 0 )
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236 rw->core.height = h ;
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237 rw->core.widget_class->core_class.resize(new) ;
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238 }
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239 }
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240
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241 /* Function Name: RadioDestroy
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242 * Description: Destroy Callback for radio widget.
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243 * Arguments: w - the radio widget that is being destroyed.
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442
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244 * junk, garbage - not used.
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424
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245 * Returns: none.
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246 */
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247
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248 /* ARGSUSED */
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249 static void
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250 RadioDestroy (Widget w,
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251 XtPointer junk,
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252 XtPointer garbage)
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253 {
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254 /* TODO: get rid of this */
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255 }
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256
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257
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258 /* React to size change from manager. Label widget will compute some internal
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259 * stuff, but we need to override. This code requires knowledge of the
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260 * internals of the Label widget.
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261 */
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262
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263 static void
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264 RadioResize (Widget w)
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265 {
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266 RadioWidget rw = (RadioWidget)w ;
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267
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268 /* call parent resize proc */
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269 SuperClass->core_class.resize(w) ;
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270
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271 /* override label offset */
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272
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273 switch( rw->label.justify ) {
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274 case XtJustifyLeft:
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442
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275 rw->label.label_x += (bs(rw) + rw->label.internal_width) ;
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424
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276 break ;
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277 case XtJustifyRight:
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278 break ;
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279 case XtJustifyCenter:
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280 default:
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442
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281 rw->label.label_x += (bs(rw) + rw->label.internal_width)/2;
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424
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282 break ;
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283 }
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284 }
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285
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286
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287 /*
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288 * Repaint the widget window.
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289 */
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290
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291 static void
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292 RadioExpose (Widget w,
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293 XEvent *event,
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294 Region region)
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295 {
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296 RadioWidget rw = (RadioWidget) w ;
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297 Display *dpy = XtDisplay(w) ;
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298 Window win = XtWindow(w) ;
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299 GC gc ;
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300 Pixmap left_bitmap ;
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301 extern WidgetClass labelWidgetClass ;
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302
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303 /* Note: the Label widget examines the region to decide if anything
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304 * needs to be drawn. I'm not sure that this is worth the effort,
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305 * but it bears thinking on.
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306 */
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307
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308 /* Command widget may sometimes override the label GC in order
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309 * to draw inverse video. We don't use inverse video, so we need
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310 * to restore the label's normal GC.
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311 */
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312 rw->label.normal_GC = rw->command.normal_GC ;
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313
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314
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315 /* Let label widget draw the label. If there was an lbm_x
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316 * field, we could let Label draw the bitmap too. But there
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317 * isn't, so we need to temporarily remove the bitmap and
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318 * draw it ourself later.
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319 */
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320 left_bitmap = rw->label.left_bitmap ;
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321 rw->label.left_bitmap = None ;
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322 labelWidgetClass->core_class.expose(w,event,region) ;
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323 rw->label.left_bitmap = left_bitmap ;
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324
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325 /* now manually draw the left bitmap. TODO: 3-d look, xaw-xpm */
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326 gc = XtIsSensitive(w) ? rw->label.normal_GC : rw->label.gray_GC ;
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327 if( left_bitmap != None && rw->label.lbm_width > 0 )
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328 {
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329 /* TODO: handle pixmaps */
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330 XCopyPlane(dpy, left_bitmap, win, gc,
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458
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331 0,0, rw->label.lbm_width, rw->label.lbm_height,
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332 (int) rw->label.internal_width*2 + bs(rw),
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333 (int) rw->label.internal_height + rw->label.lbm_y,
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334 1UL) ;
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424
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335 }
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336
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337 /* Finally, the button itself */
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338 ((RadioWidgetClass)(w->core.widget_class))->radio_class.drawDiamond(w) ;
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339 }
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340
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341
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342
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343
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344 /************************************************************
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345 *
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346 * Set specified arguments into widget
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347 *
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348 ***********************************************************/
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349
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350
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351 /* ARGSUSED */
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352 static Boolean
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353 RadioSetValues (Widget current,
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354 Widget request,
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355 Widget new,
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356 ArgList args,
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357 Cardinal *num_args)
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358 {
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359 RadioWidget oldrw = (RadioWidget) current;
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360 RadioWidget newrw = (RadioWidget) new;
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361
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362 /* Need to find out if the size of the widget changed. Set new size
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363 * if it did and resize is permitted. One way to determine of the
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364 * widget changed size would be to scan the args list. Another way
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365 * is to compare the old and new widgets and see if any of several
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366 * size-related fields have been changed. The Label widget chose the
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367 * former method, but I choose the latter.
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368 */
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369
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370 if( newrw->label.resize &&
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371 ( newrw->core.width != oldrw->core.width ||
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372 newrw->core.height != oldrw->core.height ||
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373 newrw->core.border_width != oldrw->core.border_width ) )
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374 {
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375 RadioSize(newrw, &newrw->core.width, &newrw->core.height) ;
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376 }
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377
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442
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378 /* The label set values routine can resize the widget. We need to
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379 * recalculate if this is true.
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380 */
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381 if (newrw->label.label_x != oldrw->label.label_x)
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382 {
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383 RadioResize (new);
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384 }
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424
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385 return FALSE ;
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386 }
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387
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388 static XtGeometryResult
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389 RadioQueryGeometry (Widget w,
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390 XtWidgetGeometry *intended,
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391 XtWidgetGeometry *preferred)
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392 {
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393 RadioWidget rw = (RadioWidget) w;
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394
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395 preferred->request_mode = CWWidth | CWHeight;
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396 RadioSize(rw, &preferred->width, &preferred->height) ;
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397
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398 if ( ((intended->request_mode & (CWWidth | CWHeight))
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399 == (CWWidth | CWHeight)) &&
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400 intended->width == preferred->width &&
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401 intended->height == preferred->height)
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402 return XtGeometryYes;
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403 else if (preferred->width == w->core.width &&
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404 preferred->height == w->core.height)
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405 return XtGeometryNo;
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406 else
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407 return XtGeometryAlmost;
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408 }
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409
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410
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411
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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 * Action Procedures
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417 *
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418 ************************************************************/
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419
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420 /*
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421 * Draw the highlight border around the widget. The Command widget
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422 * did this by drawing through a mask. We do it by just drawing the
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423 * border.
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424 */
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425
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442
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426 static void
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424
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427 DrawHighlight (Widget w,
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428 GC gc)
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429 {
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430 RadioWidget rw = (RadioWidget)w;
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431 XRectangle rects[4] ;
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432 Dimension ht = rw->command.highlight_thickness ;
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433
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434 if( ht <= 0 ||
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435 ht > rw->core.width/2 ||
|
|
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436 ht > rw->core.height/2 )
|
|
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437 return ;
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438
|
|
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439 if( ! XtIsRealized(w) )
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440 return ;
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441
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442 rects[0].x = 0 ; rects[0].y = 0 ;
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443 rects[0].width = rw->core.width ; rects[0].height = ht ;
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444 rects[1].x = 0 ; rects[1].y = rw->core.height - ht ;
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445 rects[1].width = rw->core.width ; rects[1].height = ht ;
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446 rects[2].x = 0 ; rects[2].y = ht ;
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447 rects[2].width = ht ; rects[2].height = rw->core.height - ht*2 ;
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448 rects[3].x = rw->core.width - ht ; rects[3].y = ht ;
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449 rects[3].width = ht ; rects[3].height = rw->core.height - ht*2 ;
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450 XFillRectangles( XtDisplay(w), XtWindow(w), gc, rects, 4) ;
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451 }
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452
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453 static void
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454 RadioHighlight (Widget w,
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455 XEvent *event,
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456 String *params,
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457 Cardinal *num_params)
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458 {
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459 RadioWidget rw = (RadioWidget)w;
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460 DrawHighlight(w, rw->command.normal_GC) ;
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461 }
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462
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463
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464 static void
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|
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465 RadioUnhighlight (Widget w,
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466 XEvent *event,
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467 String *params,
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|
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468 Cardinal *num_params)
|
|
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469 {
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470 RadioWidget rw = (RadioWidget)w;
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471 DrawHighlight(w, rw->command.inverse_GC) ;
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472 }
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|
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473
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|
|
474
|
|
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475 /* ARGSUSED */
|
|
442
|
476 void
|
|
424
|
477 RadioSet (Widget w,
|
|
|
478 XEvent *event,
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|
|
479 String *params, /* unused */
|
|
|
480 Cardinal *num_params) /* unused */
|
|
|
481 {
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|
|
482 RadioWidget rw = (RadioWidget)w;
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|
|
483 RadioWidgetClass class = (RadioWidgetClass) w->core.widget_class ;
|
|
|
484
|
|
|
485 if( rw->command.set )
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|
|
486 return ;
|
|
|
487
|
|
|
488 rw->command.set = TRUE ;
|
|
|
489 if( XtIsRealized(w) )
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|
|
490 class->radio_class.drawDiamond(w) ;
|
|
|
491 }
|
|
|
492
|
|
|
493
|
|
|
494 /* ARGSUSED */
|
|
442
|
495 void
|
|
424
|
496 RadioUnset (Widget w,
|
|
|
497 XEvent *event,
|
|
|
498 String *params, /* unused */
|
|
|
499 Cardinal *num_params) /* unused */
|
|
|
500 {
|
|
|
501 RadioWidget rw = (RadioWidget)w;
|
|
|
502 RadioWidgetClass class = (RadioWidgetClass) w->core.widget_class ;
|
|
|
503
|
|
|
504 if( ! rw->command.set )
|
|
|
505 return ;
|
|
|
506
|
|
|
507 rw->command.set = FALSE ;
|
|
|
508 if( XtIsRealized(w) )
|
|
|
509 class->radio_class.drawDiamond(w) ;
|
|
|
510 }
|
|
|
511
|
|
|
512
|
|
|
513
|
|
|
514
|
|
|
515 /************************************************************
|
|
|
516 *
|
|
|
517 * Internal Procedures
|
|
|
518 *
|
|
|
519 ************************************************************/
|
|
|
520
|
|
|
521
|
|
|
522 /* Size of widget. Width is size of box plus width of border around
|
|
|
523 * box plus width of label plus three margins plus the size of the left
|
|
|
524 * bitmap, if any. Height is max(box,bitmap,label) plus two margins.
|
|
|
525 */
|
|
|
526
|
|
|
527 static void
|
|
|
528 RadioSize (RadioWidget rw,
|
|
|
529 Dimension *w,
|
|
|
530 Dimension *h)
|
|
|
531 {
|
|
|
532 *w = rw->label.label_width + bs(rw) + LEFT_OFFSET(rw) +
|
|
|
533 3 * rw->label.internal_width ;
|
|
|
534 *h = Max( rw->label.label_height, bs(rw) ) +
|
|
|
535 2 * rw->label.internal_width ;
|
|
|
536 }
|
|
|
537
|
|
|
538
|
|
|
539 static void
|
|
|
540 DrawDiamond (Widget w)
|
|
|
541 {
|
|
|
542 RadioWidget rw = (RadioWidget) w ;
|
|
|
543 Display *dpy = XtDisplay(w) ;
|
|
|
544 Window win = XtWindow(w) ;
|
|
|
545 GC gc, gci ;
|
|
|
546
|
|
|
547 XPoint pts[5] ;
|
|
|
548 Dimension del = bsize(rw)/2 ;
|
|
|
549 Position x,y ; /* diamond center */
|
|
|
550 #ifdef _ThreeDP_h
|
|
|
551 int i=0;
|
|
|
552 Dimension s = swid(rw) ;
|
|
|
553 GC top, bot, ctr ;
|
|
|
554 #endif
|
|
|
555 gc = XtIsSensitive(w) ? rw->command.normal_GC : rw->label.gray_GC ;
|
|
|
556
|
|
|
557 gci = rw->command.set ? rw->command.normal_GC : rw->command.inverse_GC ;
|
|
|
558
|
|
|
559 x = rw->label.internal_width + bs(rw)/2 ;
|
|
|
560 y = rw->core.height/2 ;
|
|
|
561
|
|
|
562 #ifdef _ThreeDP_h
|
|
|
563 if( ! rw->command.set ) {
|
|
|
564 top = rw->threeD.top_shadow_GC ;
|
|
|
565 bot = rw->threeD.bot_shadow_GC ;
|
|
|
566 ctr = gc ; /* TODO */
|
|
|
567 } else {
|
|
|
568 top = rw->threeD.bot_shadow_GC ;
|
|
|
569 bot = rw->threeD.top_shadow_GC ;
|
|
|
570 ctr = gc ; /* TODO */
|
|
|
571 }
|
|
|
572 #endif
|
|
|
573
|
|
|
574 pts[0].x = x - del ;
|
|
|
575 pts[0].y = y ;
|
|
|
576 pts[1].x = x ;
|
|
|
577 pts[1].y = y - del ;
|
|
|
578 pts[2].x = x + del ;
|
|
|
579 pts[2].y = y ;
|
|
|
580 pts[3].x = x ;
|
|
|
581 pts[3].y = y + del ;
|
|
|
582 pts[4] = pts[0] ;
|
|
|
583 XFillPolygon(dpy,win,gci, pts,4, Convex, CoordModeOrigin) ;
|
|
|
584
|
|
|
585 #ifdef _ThreeDP_h
|
|
|
586 for(i=0; i<s; ++i) {
|
|
|
587 XDrawLine(dpy,win,bot, x-i-del,y, x,y+del+i) ;
|
|
|
588 XDrawLine(dpy,win,bot, x+del+i,y, x,y+del+i) ;
|
|
|
589 }
|
|
|
590 for(i=0; i<s; ++i) {
|
|
|
591 XDrawLine(dpy,win,top, x-del-i,y, x,y-del-i) ;
|
|
|
592 XDrawLine(dpy,win,top, x+del+i,y, x,y-del-i) ;
|
|
|
593 }
|
|
|
594 #else
|
|
|
595 XDrawLines(dpy,win,gc, pts,5, CoordModeOrigin) ;
|
|
|
596 #endif
|
|
|
597 }
|
