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1 #ifndef LWLIB_H
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2 #define LWLIB_H
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3
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4 #undef CONST
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5
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6 #include <X11/Intrinsic.h>
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7
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8 /* To eliminate use of `const' in the lwlib sources, define CONST_IS_LOSING. */
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9 #ifdef CONST_IS_LOSING
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10 # define CONST
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11 #else
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12 # define CONST const
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13 #endif
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14
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15 #if defined (LWLIB_MENUBARS_LUCID) || defined (LWLIB_MENUBARS_MOTIF) || defined (LWLIB_MENUBARS_ATHENA)
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16 #define NEED_MENUBARS
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17 #endif
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18 #if defined (LWLIB_SCROLLBARS_LUCID) || defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_ATHENA)
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19 #define NEED_SCROLLBARS
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20 #endif
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21 #if defined (LWLIB_DIALOGS_LUCID) || defined (LWLIB_DIALOGS_MOTIF) || defined (LWLIB_DIALOGS_ATHENA)
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22 #define NEED_DIALOGS
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23 #endif
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24
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25 /*
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26 ** Widget values depend on the Widget type:
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27 **
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28 ** widget: (name value key enabled data contents/selected)
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29 **
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30 ** label: ("name" "string" NULL NULL NULL NULL)
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31 ** BUTTON: ("name" "string" "key" T/F data <default-button-p>)
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32 ** CASCADE (button w/menu):
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33 ** ("name" "string" "key" T/F data (label|button|button w/menu...))
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34 ** INCREMENTAL (button w/menu construction callback):
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35 ** ("name" "string" NULL T/F <opaque pointer>)
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36 ** menubar: ("name" NULL NULL T/F data (button w/menu))
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37 ** scrollbar:("name" NULL NULL T/F NULL NULL)
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38 ** selectable thing:
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39 ** ("name" "string" "key" T/F data T/F)
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40 ** checkbox: selectable thing
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41 ** radio: ("name" NULL NULL T/F data (selectable thing...))
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42 ** strings: ("name" NULL NULL T/F data (selectable thing...))
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43 ** TEXT: ("name" "string" <ign> T/F data)
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44 **
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45 ** Note that the above is EXTREMELY bogus. The "type" of the various entities
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46 ** that a widget_value structure can represent is implicit in the contents of
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47 ** half a dozen slots, instead of there simply being a type field. This
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48 ** should all be rethunk. I've added a type field, but for now it's only used
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49 ** by the new xlwmenu code.
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50 */
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51
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52 typedef unsigned long LWLIB_ID;
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53
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54 typedef enum _change_type
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55 {
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56 NO_CHANGE = 0,
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57 INVISIBLE_CHANGE = 1,
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58 VISIBLE_CHANGE = 2,
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59 STRUCTURAL_CHANGE = 3
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60 } change_type;
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61
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62 typedef enum _widget_value_type
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63 {
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64 UNSPECIFIED_TYPE = 0,
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65 BUTTON_TYPE = 1,
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66 TOGGLE_TYPE = 2,
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67 RADIO_TYPE = 3,
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68 TEXT_TYPE = 4,
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69 SEPARATOR_TYPE = 5,
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70 CASCADE_TYPE = 6,
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71 PUSHRIGHT_TYPE = 7,
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72 INCREMENTAL_TYPE = 8
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73 } widget_value_type;
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74
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75 typedef enum _scroll_action
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76 {
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77 SCROLLBAR_LINE_UP = 0,
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78 SCROLLBAR_LINE_DOWN = 1,
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79 SCROLLBAR_PAGE_UP = 2,
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80 SCROLLBAR_PAGE_DOWN = 3,
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81 SCROLLBAR_DRAG = 4,
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82 SCROLLBAR_CHANGE = 5,
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83 SCROLLBAR_TOP = 6,
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84 SCROLLBAR_BOTTOM = 7
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85 } scroll_action;
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86
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87 typedef struct _scroll_event
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88 {
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89 scroll_action action;
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90 int slider_value;
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91 Time time;
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92 } scroll_event;
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93
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94 typedef struct _scrollbar_values
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95 {
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96 int line_increment;
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97 int page_increment;
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98
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99 int minimum;
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100 int maximum;
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101
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102 int slider_size;
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103 int slider_position;
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104
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105 int scrollbar_width, scrollbar_height;
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106 int scrollbar_x, scrollbar_y;
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107 } scrollbar_values;
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108
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109 typedef struct _widget_value
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110 {
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111 /* This slot is only partially utilized right now. */
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112 widget_value_type type;
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113
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114 /* name of widget */
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115 char* name;
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116 /* value (meaning BOGUSLY depend on widget type) */
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117 char* value;
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118 /* keyboard equivalent. no implications for XtTranslations */
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119 char* key;
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120 /* accelerator key. For XEmacs, this should be a Lisp_Object holding a
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121 char or symbol suitable for passing to event_matches_key_specifier_p.
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122 Outside of emacs, this can be anything: an X KeySym is a good idea.
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123 lwlib provides support functions for keyboard traversal of menus. Actual
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124 implementation of those accelerators is up to the application.
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125 */
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126 XtPointer accel;
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127 /* true if enabled */
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128 Boolean enabled;
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129 /* true if selected */
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130 Boolean selected;
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131 /* true if was edited (maintained by get_value) */
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132 Boolean edited;
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133 /* true if has changed (maintained by lw library) */
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134 change_type change;
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135 /* Contents of the sub-widgets, also selected slot for checkbox */
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136 struct _widget_value* contents;
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137 /* data passed to callback */
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138 XtPointer call_data;
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139 /* next one in the list */
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140 struct _widget_value* next;
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141 /* slot for the toolkit dependent part. Always initialize to NULL. */
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142 void* toolkit_data;
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143 /* tell us if we should free the toolkit data slot when freeing the
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144 widget_value itself. */
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145 Boolean free_toolkit_data;
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146
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147 /* data defining a scrollbar; only valid if type == "scrollbar" */
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148 scrollbar_values *scrollbar_data;
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149
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150 /* we resource the widget_value structures; this points to the next
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151 one on the free list if this one has been deallocated. */
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152 struct _widget_value *free_list;
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153
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154 /* some things are only possible at creation time. args are applied
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155 to widgets at creation time. */
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156 ArgList args;
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157 int nargs;
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158 Boolean free_args;
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159 } widget_value;
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160
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161
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162 typedef void (*lw_callback) (Widget w, LWLIB_ID id, XtPointer data);
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163
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164 /* menu stuff */
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165 /* maybe this should go into a generic lwmenu.h */
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166
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167 extern int lw_menu_active;
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168
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169 #if defined (LWLIB_MENUBARS_LUCID)
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170 #include "xlwmenu.h"
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171 #define lw_set_menu xlw_set_menu
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172 #define lw_push_menu xlw_push_menu
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173 #define lw_pop_menu xlw_pop_menu
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174 #define lw_set_item xlw_set_item
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175 #define lw_map_menu xlw_map_menu
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176 #define lw_display_menu xlw_display_menu
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177 #define lw_kill_menus xlw_kill_menus
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178 #define lw_get_entries xlw_get_entries
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179 #define lw_menu_level xlw_menu_level
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180 #else /* LWLIB_MENUBARS_LUCID */
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181 /* do this for the other toolkits too */
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182 #endif /* LWLIB_MENUBARS_LUCID */
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183
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184 #if defined (LWLIB_TABS_LUCID)
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185 #include "xlwtabs.h"
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186 #endif
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187
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188 void lw_register_widget (CONST char* type, CONST char* name, LWLIB_ID id,
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189 widget_value* val, lw_callback pre_activate_cb,
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190 lw_callback selection_cb,
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191 lw_callback post_activate_cb);
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192 Widget lw_get_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p);
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193 Widget lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p);
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194 Widget lw_create_widget (CONST char* type, CONST char* name, LWLIB_ID id,
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195 widget_value* val, Widget parent, Boolean pop_up_p,
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196 lw_callback pre_activate_cb,
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197 lw_callback selection_cb,
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198 lw_callback post_activate_cb);
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199 LWLIB_ID lw_get_widget_id (Widget w);
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200 int lw_map_widget_values (LWLIB_ID id, int (*mapfunc) (widget_value *value,
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201 void *closure),
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202 void *closure);
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203 void lw_modify_all_widgets (LWLIB_ID id, widget_value* val, Boolean deep_p);
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204 void lw_destroy_widget (Widget w);
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205 void lw_destroy_all_widgets (LWLIB_ID id);
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206 void lw_destroy_everything (void);
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207 void lw_destroy_all_pop_ups (void);
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208 Widget lw_raise_all_pop_up_widgets (void);
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209 widget_value* lw_get_all_values (LWLIB_ID id);
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210 Boolean lw_get_some_values (LWLIB_ID id, widget_value* val);
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211 void lw_pop_up_all_widgets (LWLIB_ID id);
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212 void lw_pop_down_all_widgets (LWLIB_ID id);
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213 void lw_add_value_args_to_args (widget_value* wv, ArgList addto, int* offset);
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214
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215 widget_value *malloc_widget_value (void);
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216 void free_widget_value (widget_value *);
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217 void free_widget_value_tree (widget_value *wv);
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218 widget_value *replace_widget_value_tree (widget_value*, widget_value*);
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219
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220 void lw_popup_menu (Widget, XEvent *);
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221
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222 /* Toolkit independent way of focusing on a Widget at the Xt level. */
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223 void lw_set_keyboard_focus (Widget parent, Widget w);
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224
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225 /* Silly Energize hack to invert the "sheet" button */
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226 void lw_show_busy (Widget w, Boolean busy);
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227
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228 #endif /* LWLIB_H */
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