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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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40 { XtNresizeCallback, XtCCallback, XtRCallback, sizeof(XtCallbackList),
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41 offset(resize_callback), XtRImmediate, (XtPointer) 0 },
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42 { XtNqueryGeometryCallback, XtCCallback, XtRCallback, sizeof(XtCallbackList),
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43 offset(query_geometry_callback), XtRImmediate, (XtPointer) 0 },
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44 { XtNuserData, XtCUserData, XtRPointer, sizeof(XtPointer),
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45 offset(user_data), XtRImmediate, (XtPointer) 0 },
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46 };
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47
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48 /****************************************************************
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49 *
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50 * Full class record constant
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51 *
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52 ****************************************************************/
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53
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54 static XtGeometryResult QueryGeometry (Widget wid,
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55 XtWidgetGeometry *request,
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56 XtWidgetGeometry *reply);
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57 static void Resize (Widget w);
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58 static XtGeometryResult GeometryManager (Widget w, XtWidgetGeometry *request,
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59 XtWidgetGeometry *reply);
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60 static void ChangeManaged (Widget w);
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61 static void Realize (Widget w, Mask *valueMask,
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62 XSetWindowAttributes *attributes);
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63 static void ClassInitialize (void);
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64
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65 EmacsManagerClassRec emacsManagerClassRec = {
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66 {
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67 /* core_class fields */
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68 #ifdef LWLIB_USES_MOTIF
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69 /* superclass */ (WidgetClass) &xmManagerClassRec,
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70 #else
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71 /* superclass */ (WidgetClass) &compositeClassRec,
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72 #endif
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73 /* class_name */ "EmacsManager",
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74 /* widget_size */ sizeof(EmacsManagerRec),
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75 /* class_initialize */ ClassInitialize,
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76 /* class_part_init */ NULL,
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77 /* class_inited */ FALSE,
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78 /* initialize */ NULL,
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79 /* initialize_hook */ NULL,
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80 /* realize */ Realize,
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81 /* actions */ NULL,
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82 /* num_actions */ 0,
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83 /* resources */ resources,
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84 /* num_resources */ XtNumber(resources),
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85 /* xrm_class */ NULLQUARK,
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86 /* compress_motion */ TRUE,
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87 /* compress_exposure */ TRUE,
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88 /* compress_enterleave*/ TRUE,
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89 /* visible_interest */ FALSE,
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90 /* destroy */ NULL,
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91 /* resize */ Resize,
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92 /* expose */ NULL,
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93 /* set_values */ NULL,
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94 /* set_values_hook */ NULL,
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95 /* set_values_almost */ XtInheritSetValuesAlmost,
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96 /* get_values_hook */ NULL,
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97 /* accept_focus */ NULL,
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98 /* version */ XtVersion,
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99 /* callback_private */ NULL,
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100 /* tm_table */ XtInheritTranslations,
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101 /* query_geometry */ QueryGeometry,
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102 /* display_accelerator*/ XtInheritDisplayAccelerator,
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103 /* extension */ NULL
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104 },
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105 {
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106 /* composite_class fields */
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107 /* geometry_manager */ GeometryManager,
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108 /* change_managed */ ChangeManaged,
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109 /* insert_child */ XtInheritInsertChild,
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110 /* delete_child */ XtInheritDeleteChild,
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111 /* extension */ NULL
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112 },
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113 #ifdef LWLIB_USES_MOTIF
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114 {
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115 /* constraint_class fields */
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116 NULL, /* resource list */
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117 0, /* num resources */
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118 0, /* constraint size */
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119 (XtInitProc)NULL, /* init proc */
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120 (XtWidgetProc)NULL, /* destroy proc */
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121 (XtSetValuesFunc)NULL, /* set values proc */
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122 NULL, /* extension */
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123 },
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124 {
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125 /* manager_class fields */
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126 XtInheritTranslations, /* translations */
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127 NULL, /* syn_resources */
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128 0, /* num_syn_resources */
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129 NULL, /* syn_cont_resources */
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130 0, /* num_syn_cont_resources */
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131 XmInheritParentProcess, /* parent_process */
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132 NULL, /* extension */
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133 },
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134 #endif
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135 {
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136 /* emacs_manager_class fields */
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137 /* empty */ 0,
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138 }
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139 };
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140
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141 WidgetClass emacsManagerWidgetClass = (WidgetClass)&emacsManagerClassRec;
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142
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143 /* What is my preferred size? A suggested size may be given. */
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144
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145 static XtGeometryResult
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146 QueryGeometry (Widget w, XtWidgetGeometry *request, XtWidgetGeometry *reply)
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147 {
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148 EmacsManagerWidget emw = (EmacsManagerWidget) w;
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149 EmacsManagerQueryGeometryStruct struc;
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150 int mask = request->request_mode & (CWWidth | CWHeight);
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151
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152 struc.request_mode = mask;
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153 if (mask & CWWidth) struc.proposed_width = request->width;
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154 if (mask & CWHeight) struc.proposed_height = request->height;
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155 XtCallCallbackList (w, emw->emacs_manager.query_geometry_callback, &struc);
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156 reply->request_mode = CWWidth | CWHeight;
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157 reply->width = struc.proposed_width;
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158 reply->height = struc.proposed_height;
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159 if (((mask & CWWidth) && (request->width != reply->width)) ||
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160 ((mask & CWHeight) && (request->height != reply->height)))
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161 return XtGeometryAlmost;
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162 return XtGeometryYes;
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163 }
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164
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165 static void
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166 Resize (Widget w)
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167 {
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168 EmacsManagerWidget emw = (EmacsManagerWidget) w;
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169 EmacsManagerResizeStruct struc;
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170
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171 struc.width = w->core.width;
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172 struc.height = w->core.height;
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173 XtCallCallbackList (w, emw->emacs_manager.resize_callback, &struc);
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174 }
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175
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176 static XtGeometryResult
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177 GeometryManager (Widget w, XtWidgetGeometry *request, XtWidgetGeometry *reply)
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178 {
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179 /* Sure, any changes are fine. */
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180 #define COPY(field, mask) \
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181 if (request->request_mode & mask) w->core.field = request->field
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182
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183 /* The Motif menubar will merrily request a new size every time a
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184 child is added or deleted. Blow it off because it doesn't know
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185 what it's talking about. */
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186 #ifdef LWLIB_MENUBARS_MOTIF
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187 if (!(XtClass (w) == xmRowColumnWidgetClass))
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188 #endif /* LWLIB_MENUBARS_MOTIF */
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189 {
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190 COPY (width, CWWidth);
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191 COPY (height, CWHeight);
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192 }
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193 COPY (border_width, CWBorderWidth);
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194 COPY (x, CWX);
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195 COPY (y, CWY);
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196 #undef COPY
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197
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198 return XtGeometryYes;
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199 }
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200
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201 static void
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202 ChangeManaged (Widget w)
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203 {
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204 if (!XtIsRealized (w))
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205 {
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206 XtWidgetGeometry req, repl;
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207
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208 /* find out how big we'd like to be ... */
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209
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210 req.request_mode = 0;
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211 XtQueryGeometry (w, &req, &repl);
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212 EmacsManagerChangeSize (w, repl.width, repl.height);
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213 }
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214 }
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215
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216 static void
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217 Realize (Widget w, Mask *valueMask, XSetWindowAttributes *attributes)
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218 {
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219 attributes->bit_gravity = NorthWestGravity;
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220 *valueMask |= CWBitGravity;
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221
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222 XtCreateWindow (w, (unsigned) InputOutput, (Visual *) CopyFromParent,
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223 *valueMask, attributes);
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224 }
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225
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226 static void
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227 ClassInitialize (void)
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228 {
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229 return;
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230 }
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231
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232 void
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233 EmacsManagerChangeSize (Widget w, Dimension width, Dimension height)
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234 {
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235 if (width == 0)
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236 width = w->core.width;
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237 if (height == 0)
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238 height = w->core.height;
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239
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240 /* do nothing if we're already that size */
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241 if (w->core.width != width || w->core.height != height)
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242 if (XtMakeResizeRequest (w, width, height, &w->core.width, &w->core.height)
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243 == XtGeometryAlmost)
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244 XtMakeResizeRequest (w, w->core.width, w->core.height, NULL, NULL);
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245
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246 Resize (w);
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247 }
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248
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249
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