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428
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1 /* Emacs manager widget.
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2 Copyright (C) 1993-1995 Sun Microsystems, Inc.
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3 Copyright (C) 1995 Ben Wing.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Not in FSF. */
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23
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24 /* Written by Ben Wing, May, 1994. */
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25
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26 #include <config.h>
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27
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28 #include <X11/StringDefs.h>
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29 #include "EmacsManagerP.h"
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30 #ifdef LWLIB_MENUBARS_MOTIF
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31 #include <Xm/RowColumn.h>
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32 #endif /* LWLIB_MENUBARS_MOTIF */
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33
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34 /* For I, Emacs, am a kind god. Unlike the goddess Athena and the
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35 Titan Motif, I require no ritual sacrifices to placate the lesser
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36 daemons of geometry management. */
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37
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38 static XtResource resources[] = {
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39 #define offset(field) XtOffset(EmacsManagerWidget, emacs_manager.field)
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440
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40 { XtNresizeCallback, XtCCallback,
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41 XtRCallback, sizeof (XtCallbackList),
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42 offset(resize_callback), XtRImmediate, (XtPointer) 0 },
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43 { XtNqueryGeometryCallback, XtCCallback,
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44 XtRCallback, sizeof (XtCallbackList),
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45 offset(query_geometry_callback), XtRImmediate, (XtPointer) 0 },
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46 { XtNuserData, XtCUserData,
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47 XtRPointer, sizeof (XtPointer),
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48 offset(user_data), XtRImmediate, (XtPointer) 0 },
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428
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49 };
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50
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51 /****************************************************************
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52 *
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53 * Full class record constant
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54 *
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55 ****************************************************************/
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56
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57 static XtGeometryResult QueryGeometry (Widget wid,
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58 XtWidgetGeometry *request,
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59 XtWidgetGeometry *reply);
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60 static void Resize (Widget w);
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61 static XtGeometryResult GeometryManager (Widget w, XtWidgetGeometry *request,
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62 XtWidgetGeometry *reply);
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63 static void ChangeManaged (Widget w);
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64 static void Realize (Widget w, Mask *valueMask,
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65 XSetWindowAttributes *attributes);
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66 static void ClassInitialize (void);
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67
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68 EmacsManagerClassRec emacsManagerClassRec = {
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69 {
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70 /* core_class fields */
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71 #ifdef LWLIB_USES_MOTIF
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72 /* superclass */ (WidgetClass) &xmManagerClassRec,
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73 #else
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74 /* superclass */ (WidgetClass) &compositeClassRec,
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75 #endif
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76 /* class_name */ "EmacsManager",
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440
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77 /* widget_size */ sizeof (EmacsManagerRec),
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428
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78 /* class_initialize */ ClassInitialize,
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79 /* class_part_init */ NULL,
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80 /* class_inited */ FALSE,
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81 /* initialize */ NULL,
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82 /* initialize_hook */ NULL,
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83 /* realize */ Realize,
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84 /* actions */ NULL,
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85 /* num_actions */ 0,
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86 /* resources */ resources,
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87 /* num_resources */ XtNumber(resources),
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88 /* xrm_class */ NULLQUARK,
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89 /* compress_motion */ TRUE,
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1294
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90 /* compress_exposure */ XtExposeCompressMaximal | XtExposeNoRegion,
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428
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91 /* compress_enterleave*/ TRUE,
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92 /* visible_interest */ FALSE,
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93 /* destroy */ NULL,
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94 /* resize */ Resize,
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95 /* expose */ NULL,
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96 /* set_values */ NULL,
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97 /* set_values_hook */ NULL,
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98 /* set_values_almost */ XtInheritSetValuesAlmost,
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99 /* get_values_hook */ NULL,
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100 /* accept_focus */ NULL,
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101 /* version */ XtVersion,
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102 /* callback_private */ NULL,
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103 /* tm_table */ XtInheritTranslations,
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104 /* query_geometry */ QueryGeometry,
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105 /* display_accelerator*/ XtInheritDisplayAccelerator,
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106 /* extension */ NULL
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107 },
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108 {
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109 /* composite_class fields */
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110 /* geometry_manager */ GeometryManager,
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111 /* change_managed */ ChangeManaged,
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112 /* insert_child */ XtInheritInsertChild,
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113 /* delete_child */ XtInheritDeleteChild,
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114 /* extension */ NULL
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115 },
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116 #ifdef LWLIB_USES_MOTIF
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117 {
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118 /* constraint_class fields */
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119 NULL, /* resource list */
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120 0, /* num resources */
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121 0, /* constraint size */
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122 (XtInitProc)NULL, /* init proc */
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123 (XtWidgetProc)NULL, /* destroy proc */
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124 (XtSetValuesFunc)NULL, /* set values proc */
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125 NULL, /* extension */
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126 },
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127 {
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128 /* manager_class fields */
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129 XtInheritTranslations, /* translations */
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130 NULL, /* syn_resources */
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131 0, /* num_syn_resources */
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132 NULL, /* syn_cont_resources */
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133 0, /* num_syn_cont_resources */
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134 XmInheritParentProcess, /* parent_process */
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135 NULL, /* extension */
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136 },
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137 #endif
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138 {
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139 /* emacs_manager_class fields */
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140 /* empty */ 0,
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141 }
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142 };
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143
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144 WidgetClass emacsManagerWidgetClass = (WidgetClass)&emacsManagerClassRec;
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145
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146 /* What is my preferred size? A suggested size may be given. */
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147
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148 static XtGeometryResult
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149 QueryGeometry (Widget w, XtWidgetGeometry *request, XtWidgetGeometry *reply)
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150 {
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151 EmacsManagerWidget emw = (EmacsManagerWidget) w;
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152 EmacsManagerQueryGeometryStruct struc;
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440
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153 int request_mode = request->request_mode;
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428
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154
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440
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155 struc.request_mode = request_mode;
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156 struc.proposed_width = (request_mode & CWWidth) ? request->width : 0;
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157 struc.proposed_height = (request_mode & CWHeight) ? request->height : 0;
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428
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158 XtCallCallbackList (w, emw->emacs_manager.query_geometry_callback, &struc);
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159 reply->request_mode = CWWidth | CWHeight;
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160 reply->width = struc.proposed_width;
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161 reply->height = struc.proposed_height;
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440
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162 if (((request_mode & CWWidth) && (request->width != reply->width)) ||
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163 ((request_mode & CWHeight) && (request->height != reply->height)))
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428
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164 return XtGeometryAlmost;
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165 return XtGeometryYes;
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166 }
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167
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168 static void
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169 Resize (Widget w)
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170 {
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171 EmacsManagerWidget emw = (EmacsManagerWidget) w;
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172 EmacsManagerResizeStruct struc;
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173
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174 struc.width = w->core.width;
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175 struc.height = w->core.height;
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176 XtCallCallbackList (w, emw->emacs_manager.resize_callback, &struc);
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177 }
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178
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179 static XtGeometryResult
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180 GeometryManager (Widget w, XtWidgetGeometry *request, XtWidgetGeometry *reply)
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181 {
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182 /* Sure, any changes are fine. */
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183
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440
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184 #ifdef LWLIB_MENUBARS_MOTIF
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428
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185 /* The Motif menubar will merrily request a new size every time a
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186 child is added or deleted. Blow it off because it doesn't know
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187 what it's talking about. */
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440
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188 if (XtClass (w) != xmRowColumnWidgetClass)
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428
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189 #endif /* LWLIB_MENUBARS_MOTIF */
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190 {
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440
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191 if (request->request_mode & CWWidth) w->core.width = request->width;
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192 if (request->request_mode & CWHeight) w->core.height = request->height;
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428
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193 }
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440
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194 if (request->request_mode & CWBorderWidth)
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195 w->core.border_width = request->border_width;
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196 if (request->request_mode & CWX) w->core.x = request->x;
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197 if (request->request_mode & CWY) w->core.y = request->y;
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428
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198
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199 return XtGeometryYes;
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200 }
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201
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202 static void
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203 ChangeManaged (Widget w)
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204 {
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205 if (!XtIsRealized (w))
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206 {
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440
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207 XtWidgetGeometry request, reply;
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428
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208
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209 /* find out how big we'd like to be ... */
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210
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440
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211 request.request_mode = 0;
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212 XtQueryGeometry (w, &request, &reply);
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213 EmacsManagerChangeSize (w, reply.width, reply.height);
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428
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214 }
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215 }
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216
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217 static void
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218 Realize (Widget w, Mask *valueMask, XSetWindowAttributes *attributes)
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219 {
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220 attributes->bit_gravity = NorthWestGravity;
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221 *valueMask |= CWBitGravity;
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222
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223 XtCreateWindow (w, (unsigned) InputOutput, (Visual *) CopyFromParent,
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224 *valueMask, attributes);
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225 }
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226
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227 static void
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228 ClassInitialize (void)
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229 {
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230 return;
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231 }
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232
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233 void
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234 EmacsManagerChangeSize (Widget w, Dimension width, Dimension height)
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235 {
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236 if (width == 0)
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237 width = w->core.width;
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238 if (height == 0)
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239 height = w->core.height;
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240
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241 /* do nothing if we're already that size */
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242 if (w->core.width != width || w->core.height != height)
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243 if (XtMakeResizeRequest (w, width, height, &w->core.width, &w->core.height)
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244 == XtGeometryAlmost)
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245 XtMakeResizeRequest (w, w->core.width, w->core.height, NULL, NULL);
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246
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247 Resize (w);
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248 }
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249
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250
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