src/bfu/checkbox.c

   1 /* Checkbox widget handlers. */
   2
   3 #ifdef HAVE_CONFIG_H
   4 #include "config.h"
   5 #endif
   6
   7 #include "elinks.h"
   8
   9 #include "bfu/button.h"
  10 #include "bfu/checkbox.h"
  11 #include "bfu/dialog.h"
  12 #include "bfu/text.h"
  13 #include "intl/gettext/libintl.h"
  14 #include "terminal/draw.h"
  15 #include "terminal/mouse.h"
  16 #include "terminal/terminal.h"
  17
  18 #define CHECKBOX_HEIGHT 1
  19 #define CHECKBOX_LEN 3  /* "[X]" or "(X)" */
  20 #define CHECKBOX_SPACING 1      /* "[X]" + " " + "Label" */
  21 #define CHECKBOX_LS (CHECKBOX_LEN + CHECKBOX_SPACING)   /* "[X] " */
  22
  23 void
  24 add_dlg_radio_do(struct dialog *dlg, unsigned char *text,
  25                  int groupid, int groupnum, int *data)
  26 {
  27         struct widget *widget = &dlg->widgets[dlg->number_of_widgets++];
  28
  29         widget->type    = WIDGET_CHECKBOX;
  30         widget->text    = text;
  31         widget->datalen = sizeof(*data);
  32         widget->data    = (void *) data;
  33
  34         widget->info.checkbox.gid  = groupid;
  35         widget->info.checkbox.gnum = groupnum;
  36 }
  37
  38 void
  39 dlg_format_checkbox(struct terminal *term, struct dialog_data *dlg_data,
  40                     struct widget_data *widget_data,
  41                     int x, int *y, int w, int *rw,
  42                     enum format_align align, int format_only)
  43 {
  44         unsigned char *text = widget_data->widget->text;
  45
  46         set_box(&widget_data->box, x, *y, CHECKBOX_LEN, CHECKBOX_HEIGHT);
  47
  48         if (w <= CHECKBOX_LS) return;
  49
  50         if (text && *text) {
  51                 if (rw) *rw -= CHECKBOX_LS;
  52                 dlg_format_text_do(dlg_data, text, x + CHECKBOX_LS, y,
  53                                    w - CHECKBOX_LS, rw,
  54                                    get_bfu_color(term, "dialog.checkbox-label"),
  55                                    align, format_only);
  56                 if (rw) *rw += CHECKBOX_LS;
  57         }
  58 }
  59
  60 static widget_handler_status_T
  61 display_checkbox(struct dialog_data *dlg_data, struct widget_data *widget_data)
  62 {
  63         struct terminal *term = dlg_data->win->term;
  64         struct color_pair *color;
  65         unsigned char *text;
  66         struct box *pos = &widget_data->box;
  67         int selected = is_selected_widget(dlg_data, widget_data);
  68
  69         if (selected) {
  70                 color = get_bfu_color(term, "dialog.checkbox-selected");
  71         } else {
  72                 color = get_bfu_color(term, "dialog.checkbox");
  73         }
  74         if (!color) return EVENT_PROCESSED;
  75
  76         if (widget_data->info.checkbox.checked)
  77                 text = widget_data->widget->info.checkbox.gid ? "(X)" : "[X]";
  78         else
  79                 text = widget_data->widget->info.checkbox.gid ? "( )" : "[ ]";
  80
  81         draw_dlg_text(term, dlg_data, pos->x, pos->y, text, CHECKBOX_LEN, 0, color);
  82
  83         if (selected) {
  84                 set_dlg_cursor(term, dlg_data, pos->x + 1, pos->y, 1);
  85                 set_dlg_window_ptr(dlg_data, dlg_data->win, pos->x, pos->y);
  86         }
  87
  88         return EVENT_PROCESSED;
  89 }
  90
  91 static widget_handler_status_T
  92 init_checkbox(struct dialog_data *dlg_data, struct widget_data *widget_data)
  93 {
  94         int *cdata = (int *) widget_data->cdata;
  95
  96         assert(cdata);
  97
  98         if (widget_data->widget->info.checkbox.gid) {
  99                 if (*cdata == widget_data->widget->info.checkbox.gnum)
 100                         widget_data->info.checkbox.checked = 1;
 101         } else {
 102                 if (*cdata)
 103                         widget_data->info.checkbox.checked = 1;
 104         }
 105         return EVENT_PROCESSED;
 106 }
 107
 108 static widget_handler_status_T
 109 mouse_checkbox(struct dialog_data *dlg_data, struct widget_data *widget_data)
 110 {
 111         struct terminal *term = dlg_data->win->term;
 112         struct term_event *ev = dlg_data->term_event;
 113
 114         if (check_mouse_wheel(ev)
 115             || !check_mouse_position(ev, &widget_data->box))
 116                 return EVENT_NOT_PROCESSED;
 117
 118         select_widget(dlg_data, widget_data);
 119
 120         do_not_ignore_next_mouse_event(term);
 121
 122         if (check_mouse_action(ev, B_UP) && widget_data->widget->ops->select)
 123                 widget_data->widget->ops->select(dlg_data, widget_data);
 124
 125         return EVENT_PROCESSED;
 126 }
 127
 128 static widget_handler_status_T
 129 select_checkbox(struct dialog_data *dlg_data, struct widget_data *widget_data)
 130 {
 131         if (!widget_data->widget->info.checkbox.gid) {
 132                 /* Checkbox. */
 133                 int *cdata = (int *) widget_data->cdata;
 134
 135                 assert(cdata);
 136
 137                 widget_data->info.checkbox.checked = *cdata = !*cdata;
 138
 139         } else {
 140                 /* Group of radio buttons. */
 141                 struct widget_data *wdata;
 142
 143                 foreach_widget(dlg_data, wdata) {
 144                         int *cdata = (int *) wdata->cdata;
 145
 146                         if (wdata->widget->type != WIDGET_CHECKBOX)
 147                                 continue;
 148
 149                         if (wdata->widget->info.checkbox.gid
 150                             != widget_data->widget->info.checkbox.gid)
 151                                 continue;
 152
 153                         assert(cdata);
 154
 155                         *cdata = widget_data->widget->info.checkbox.gnum;
 156                         wdata->info.checkbox.checked = 0;
 157                         display_widget(dlg_data, wdata);
 158                 }
 159                 widget_data->info.checkbox.checked = 1;
 160         }
 161         display_widget(dlg_data, widget_data);
 162
 163         return EVENT_PROCESSED;
 164 }
 165
 166 const struct widget_ops checkbox_ops = {
 167         display_checkbox,
 168         init_checkbox,
 169         mouse_checkbox,
 170         NULL,
 171         select_checkbox,
 172         NULL,
 173 };