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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 #include <X11/Intrinsic.h>
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5
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6 /* To eliminate use of `const' in the lwlib sources, define CONST_IS_LOSING. */
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7 #undef CONST
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8 #ifdef CONST_IS_LOSING
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9 # define CONST
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10 #else
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11 # define CONST const
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12 #endif
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13
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14 #if defined (MENUBARS_LUCID) || defined (MENUBARS_MOTIF) || defined (MENUBARS_ATHENA)
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15 #define NEED_MENUBARS
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16 #endif
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17 #if defined (SCROLLBARS_LUCID) || defined (SCROLLBARS_MOTIF) || defined (SCROLLBARS_ATHENA)
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18 #define NEED_SCROLLBARS
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19 #endif
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20 #if defined (DIALOGS_LUCID) || defined (DIALOGS_MOTIF) || defined (DIALOGS_ATHENA)
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21 #define NEED_DIALOGS
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22 #endif
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23
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24 /*
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25 ** Widget values depend on the Widget type:
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26 **
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27 ** widget: (name value key enabled data contents/selected)
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28 **
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29 ** label: ("name" "string" NULL NULL NULL NULL)
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30 ** BUTTON: ("name" "string" "key" T/F data <default-button-p>)
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31 ** CASCADE (button w/menu):
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32 ** ("name" "string" "key" T/F data (label|button|button w/menu...))
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33 ** INCREMENTAL (button w/menu construction callback):
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34 ** ("name" "string" NULL T/F <opaque pointer>)
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35 ** menubar: ("name" NULL NULL T/F data (button w/menu))
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36 ** scrollbar:("name" NULL NULL T/F NULL NULL)
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37 ** selectable thing:
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38 ** ("name" "string" "key" T/F data T/F)
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39 ** checkbox: selectable thing
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40 ** radio: ("name" NULL NULL T/F data (selectable thing...))
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41 ** strings: ("name" NULL NULL T/F data (selectable thing...))
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42 ** TEXT: ("name" "string" <ign> T/F data)
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43 **
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44 ** Note that the above is EXTREMELY bogus. The "type" of the various entities
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45 ** that a widget_value structure can represent is implicit in the contents of
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46 ** half a dozen slots, instead of there simply being a type field. This
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47 ** should all be rethunk. I've added a type field, but for now it's only used
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48 ** by the new xlwmenu code.
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49 */
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50
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51 typedef unsigned long LWLIB_ID;
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52
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53 typedef enum _change_type
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54 {
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55 NO_CHANGE = 0,
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56 INVISIBLE_CHANGE = 1,
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57 VISIBLE_CHANGE = 2,
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58 STRUCTURAL_CHANGE = 3
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59 } change_type;
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60
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61 typedef enum _widget_value_type
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62 {
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63 UNSPECIFIED_TYPE = 0,
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64 BUTTON_TYPE = 1,
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65 TOGGLE_TYPE = 2,
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66 RADIO_TYPE = 3,
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67 TEXT_TYPE = 4,
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68 SEPARATOR_TYPE = 5,
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69 CASCADE_TYPE = 6,
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70 PUSHRIGHT_TYPE = 7,
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71 INCREMENTAL_TYPE = 8
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72 } widget_value_type;
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73
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74 typedef enum _scroll_action
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75 {
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76 SCROLLBAR_LINE_UP = 0,
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77 SCROLLBAR_LINE_DOWN = 1,
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78 SCROLLBAR_PAGE_UP = 2,
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79 SCROLLBAR_PAGE_DOWN = 3,
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80 SCROLLBAR_DRAG = 4,
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81 SCROLLBAR_CHANGE = 5,
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82 SCROLLBAR_TOP = 6,
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83 SCROLLBAR_BOTTOM = 7
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84 } scroll_action;
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85
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86 typedef struct _scroll_event
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87 {
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88 scroll_action action;
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89 int slider_value;
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90 Time time;
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91 } scroll_event;
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92
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93 typedef struct _scrollbar_values
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94 {
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95 int line_increment;
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96 int page_increment;
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97
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98 int minimum;
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99 int maximum;
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100
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101 int slider_size;
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102 int slider_position;
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103
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104 int scrollbar_width, scrollbar_height;
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105 int scrollbar_x, scrollbar_y;
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106 } scrollbar_values;
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107
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108 typedef struct _widget_value
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109 {
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110 /* This slot is only partially utilized right now. */
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111 widget_value_type type;
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112
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113 /* name of widget */
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114 char* name;
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115 /* value (meaning BOGUSLY depend on widget type) */
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116 char* value;
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117 /* keyboard equivalent. no implications for XtTranslations */
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118 char* key;
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119 /* true if enabled */
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120 Boolean enabled;
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121 /* true if selected */
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122 Boolean selected;
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123 /* true if was edited (maintained by get_value) */
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124 Boolean edited;
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125 /* true if has changed (maintained by lw library) */
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126 change_type change;
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127 /* Contents of the sub-widgets, also selected slot for checkbox */
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128 struct _widget_value* contents;
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129 /* data passed to callback */
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130 XtPointer call_data;
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131 /* next one in the list */
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132 struct _widget_value* next;
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133 /* slot for the toolkit dependent part. Always initialize to NULL. */
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134 void* toolkit_data;
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135 /* tell us if we should free the toolkit data slot when freeing the
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136 widget_value itself. */
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137 Boolean free_toolkit_data;
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138
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139 /* data defining a scrollbar; only valid if type == "scrollbar" */
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140 scrollbar_values *scrollbar_data;
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141
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142 /* we resource the widget_value structures; this points to the next
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143 one on the free list if this one has been deallocated.
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144 */
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145 struct _widget_value *free_list;
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146 } widget_value;
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147
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148
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149 typedef void (*lw_callback) (Widget w, LWLIB_ID id, XtPointer data);
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150
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151 void lw_register_widget (CONST char* type, CONST char* name, LWLIB_ID id,
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152 widget_value* val, lw_callback pre_activate_cb,
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153 lw_callback selection_cb,
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154 lw_callback post_activate_cb);
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155 Widget lw_get_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p);
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156 Widget lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p);
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157 Widget lw_create_widget (CONST char* type, CONST char* name, LWLIB_ID id,
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158 widget_value* val, Widget parent, Boolean pop_up_p,
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159 lw_callback pre_activate_cb,
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160 lw_callback selection_cb,
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161 lw_callback post_activate_cb);
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162 LWLIB_ID lw_get_widget_id (Widget w);
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163 int lw_map_widget_values (LWLIB_ID id, int (*mapfunc) (widget_value *value,
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164 void *closure),
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165 void *closure);
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166 void lw_modify_all_widgets (LWLIB_ID id, widget_value* val, Boolean deep_p);
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167 void lw_destroy_widget (Widget w);
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168 void lw_destroy_all_widgets (LWLIB_ID id);
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169 void lw_destroy_everything (void);
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170 void lw_destroy_all_pop_ups (void);
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171 Widget lw_raise_all_pop_up_widgets (void);
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172 widget_value* lw_get_all_values (LWLIB_ID id);
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173 Boolean lw_get_some_values (LWLIB_ID id, widget_value* val);
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174 void lw_pop_up_all_widgets (LWLIB_ID id);
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175 void lw_pop_down_all_widgets (LWLIB_ID id);
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176
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177 widget_value *malloc_widget_value (void);
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178 void free_widget_value (widget_value *);
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179 widget_value *replace_widget_value_tree (widget_value*, widget_value*);
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180
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181 void lw_popup_menu (Widget, XEvent *);
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182
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183 /* Toolkit independent way of focusing on a Widget at the Xt level. */
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184 void lw_set_keyboard_focus (Widget parent, Widget w);
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185
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186 /* Silly Energize hack to invert the "sheet" button */
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187 void lw_show_busy (Widget w, Boolean busy);
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188
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189 #endif /* LWLIB_H */
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