Pileus Git - ~andy/gtk/blob - gtk/gtklistitem.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19 #include "gtklabel.h"
  20 #include "gtklistitem.h"
  21 #include "gtklist.h"
  22
  23 static void gtk_list_item_class_init    (GtkListItemClass *klass);
  24 static void gtk_list_item_init          (GtkListItem      *list_item);
  25 static void gtk_list_item_realize       (GtkWidget        *widget);
  26 static void gtk_list_item_size_request  (GtkWidget        *widget,
  27                                          GtkRequisition   *requisition);
  28 static void gtk_list_item_size_allocate (GtkWidget        *widget,
  29                                          GtkAllocation    *allocation);
  30 static void gtk_list_item_draw          (GtkWidget        *widget,
  31                                          GdkRectangle     *area);
  32 static void gtk_list_item_draw_focus    (GtkWidget        *widget);
  33 static gint gtk_list_item_button_press  (GtkWidget        *widget,
  34                                          GdkEventButton   *event);
  35 static gint gtk_list_item_expose        (GtkWidget        *widget,
  36                                          GdkEventExpose   *event);
  37 static gint gtk_list_item_focus_in      (GtkWidget        *widget,
  38                                          GdkEventFocus    *event);
  39 static gint gtk_list_item_focus_out     (GtkWidget        *widget,
  40                                          GdkEventFocus    *event);
  41 static void gtk_real_list_item_select   (GtkItem          *item);
  42 static void gtk_real_list_item_deselect (GtkItem          *item);
  43 static void gtk_real_list_item_toggle   (GtkItem          *item);
  44
  45
  46 static GtkItemClass *parent_class = NULL;
  47
  48
  49 GtkType
  50 gtk_list_item_get_type (void)
  51 {
  52   static GtkType list_item_type = 0;
  53
  54   if (!list_item_type)
  55     {
  56       GtkTypeInfo list_item_info =
  57       {
  58         "GtkListItem",
  59         sizeof (GtkListItem),
  60         sizeof (GtkListItemClass),
  61         (GtkClassInitFunc) gtk_list_item_class_init,
  62         (GtkObjectInitFunc) gtk_list_item_init,
  63         (GtkArgSetFunc) NULL,
  64         (GtkArgGetFunc) NULL,
  65       };
  66
  67       list_item_type = gtk_type_unique (gtk_item_get_type (), &list_item_info);
  68     }
  69
  70   return list_item_type;
  71 }
  72
  73 static void
  74 gtk_list_item_class_init (GtkListItemClass *class)
  75 {
  76   GtkWidgetClass *widget_class;
  77   GtkItemClass *item_class;
  78
  79   widget_class = (GtkWidgetClass*) class;
  80   item_class = (GtkItemClass*) class;
  81
  82   parent_class = gtk_type_class (gtk_item_get_type ());
  83
  84   widget_class->realize = gtk_list_item_realize;
  85   widget_class->size_request = gtk_list_item_size_request;
  86   widget_class->size_allocate = gtk_list_item_size_allocate;
  87   widget_class->draw = gtk_list_item_draw;
  88   widget_class->draw_focus = gtk_list_item_draw_focus;
  89   widget_class->button_press_event = gtk_list_item_button_press;
  90   widget_class->expose_event = gtk_list_item_expose;
  91   widget_class->focus_in_event = gtk_list_item_focus_in;
  92   widget_class->focus_out_event = gtk_list_item_focus_out;
  93
  94   item_class->select = gtk_real_list_item_select;
  95   item_class->deselect = gtk_real_list_item_deselect;
  96   item_class->toggle = gtk_real_list_item_toggle;
  97 }
  98
  99 static void
 100 gtk_list_item_init (GtkListItem *list_item)
 101 {
 102   GTK_WIDGET_SET_FLAGS (list_item, GTK_CAN_FOCUS);
 103 }
 104
 105 GtkWidget*
 106 gtk_list_item_new (void)
 107 {
 108   return GTK_WIDGET (gtk_type_new (gtk_list_item_get_type ()));
 109 }
 110
 111 GtkWidget*
 112 gtk_list_item_new_with_label (const gchar *label)
 113 {
 114   GtkWidget *list_item;
 115   GtkWidget *label_widget;
 116
 117   list_item = gtk_list_item_new ();
 118   label_widget = gtk_label_new (label);
 119   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 120
 121   gtk_container_add (GTK_CONTAINER (list_item), label_widget);
 122   gtk_widget_show (label_widget);
 123
 124   return list_item;
 125 }
 126
 127 void
 128 gtk_list_item_select (GtkListItem *list_item)
 129 {
 130   gtk_item_select (GTK_ITEM (list_item));
 131 }
 132
 133 void
 134 gtk_list_item_deselect (GtkListItem *list_item)
 135 {
 136   gtk_item_deselect (GTK_ITEM (list_item));
 137 }
 138
 139
 140 static void
 141 gtk_list_item_realize (GtkWidget *widget)
 142 {
 143   g_return_if_fail (widget != NULL);
 144   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 145
 146   if (GTK_WIDGET_CLASS (parent_class)->realize)
 147     (* GTK_WIDGET_CLASS (parent_class)->realize) (widget);
 148
 149   gdk_window_set_background (widget->window,
 150                              &widget->style->base[GTK_STATE_NORMAL]);
 151 }
 152
 153 static void
 154 gtk_list_item_size_request (GtkWidget      *widget,
 155                             GtkRequisition *requisition)
 156 {
 157   GtkBin *bin;
 158
 159   g_return_if_fail (widget != NULL);
 160   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 161   g_return_if_fail (requisition != NULL);
 162
 163   bin = GTK_BIN (widget);
 164
 165   requisition->width = (GTK_CONTAINER (widget)->border_width +
 166                         widget->style->klass->xthickness) * 2;
 167   requisition->height = GTK_CONTAINER (widget)->border_width * 2;
 168
 169   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 170     {
 171       gtk_widget_size_request (bin->child, &bin->child->requisition);
 172
 173       requisition->width += bin->child->requisition.width;
 174       requisition->height += bin->child->requisition.height;
 175     }
 176 }
 177
 178 static void
 179 gtk_list_item_size_allocate (GtkWidget     *widget,
 180                              GtkAllocation *allocation)
 181 {
 182   GtkBin *bin;
 183   GtkAllocation child_allocation;
 184
 185   g_return_if_fail (widget != NULL);
 186   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 187   g_return_if_fail (allocation != NULL);
 188
 189   widget->allocation = *allocation;
 190   if (GTK_WIDGET_REALIZED (widget))
 191     gdk_window_move_resize (widget->window,
 192                             allocation->x, allocation->y,
 193                             allocation->width, allocation->height);
 194
 195   bin = GTK_BIN (widget);
 196
 197   if (bin->child)
 198     {
 199       child_allocation.x = (GTK_CONTAINER (widget)->border_width +
 200                             widget->style->klass->xthickness);
 201       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 202       child_allocation.width = allocation->width - child_allocation.x * 2;
 203       child_allocation.height = allocation->height - child_allocation.y * 2;
 204
 205       gtk_widget_size_allocate (bin->child, &child_allocation);
 206     }
 207 }
 208
 209 static void
 210 gtk_list_item_draw (GtkWidget    *widget,
 211                     GdkRectangle *area)
 212 {
 213   GtkBin *bin;
 214   GdkRectangle child_area;
 215
 216   g_return_if_fail (widget != NULL);
 217   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 218   g_return_if_fail (area != NULL);
 219
 220   if (GTK_WIDGET_DRAWABLE (widget))
 221     {
 222       bin = GTK_BIN (widget);
 223
 224       if (!GTK_WIDGET_IS_SENSITIVE (widget))
 225         gtk_style_set_background (widget->style, widget->window, GTK_STATE_INSENSITIVE);
 226       else if (widget->state == GTK_STATE_NORMAL)
 227         gdk_window_set_background (widget->window,
 228                                    &widget->style->base[GTK_STATE_NORMAL]);
 229       else
 230         gtk_style_set_background (widget->style, widget->window, widget->state);
 231
 232       gdk_window_clear_area (widget->window, area->x, area->y,
 233                              area->width, area->height);
 234
 235       if (bin->child && gtk_widget_intersect (bin->child, area, &child_area))
 236         gtk_widget_draw (bin->child, &child_area);
 237
 238       gtk_widget_draw_focus (widget);
 239     }
 240 }
 241
 242 static void
 243 gtk_list_item_draw_focus (GtkWidget *widget)
 244 {
 245   GdkGC *gc;
 246
 247   g_return_if_fail (widget != NULL);
 248   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 249
 250   if (GTK_WIDGET_DRAWABLE (widget))
 251     {
 252       if (GTK_WIDGET_HAS_FOCUS (widget))
 253         gc = widget->style->black_gc;
 254       else if (!GTK_WIDGET_IS_SENSITIVE (widget))
 255         gc = widget->style->bg_gc[GTK_STATE_INSENSITIVE];
 256       else if (widget->state == GTK_STATE_NORMAL)
 257         gc = widget->style->base_gc[GTK_STATE_NORMAL];
 258       else
 259         gc = widget->style->bg_gc[widget->state];
 260
 261       gdk_draw_rectangle (widget->window, gc, FALSE, 0, 0,
 262                           widget->allocation.width - 1,
 263                           widget->allocation.height - 1);
 264     }
 265 }
 266
 267 static gint
 268 gtk_list_item_button_press (GtkWidget      *widget,
 269                             GdkEventButton *event)
 270 {
 271   g_return_val_if_fail (widget != NULL, FALSE);
 272   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 273   g_return_val_if_fail (event != NULL, FALSE);
 274
 275   if (event->type == GDK_BUTTON_PRESS)
 276     if (!GTK_WIDGET_HAS_FOCUS (widget))
 277       gtk_widget_grab_focus (widget);
 278
 279   return FALSE;
 280 }
 281
 282 static gint
 283 gtk_list_item_expose (GtkWidget      *widget,
 284                       GdkEventExpose *event)
 285 {
 286   GtkBin *bin;
 287   GdkEventExpose child_event;
 288
 289   g_return_val_if_fail (widget != NULL, FALSE);
 290   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 291   g_return_val_if_fail (event != NULL, FALSE);
 292
 293   if (GTK_WIDGET_DRAWABLE (widget))
 294     {
 295       bin = GTK_BIN (widget);
 296
 297       if (!GTK_WIDGET_IS_SENSITIVE (widget))
 298         gdk_window_set_background (widget->window, &widget->style->bg[GTK_STATE_INSENSITIVE]);
 299       else if (widget->state == GTK_STATE_NORMAL)
 300         gdk_window_set_background (widget->window, &widget->style->base[GTK_STATE_NORMAL]);
 301       else
 302         gdk_window_set_background (widget->window, &widget->style->bg[widget->state]);
 303
 304       gdk_window_clear_area (widget->window, event->area.x, event->area.y,
 305                              event->area.width, event->area.height);
 306
 307       if (bin->child)
 308         {
 309           child_event = *event;
 310
 311           if (GTK_WIDGET_NO_WINDOW (bin->child) &&
 312               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 313             gtk_widget_event (bin->child, (GdkEvent*) &child_event);
 314         }
 315
 316       gtk_widget_draw_focus (widget);
 317     }
 318
 319   return FALSE;
 320 }
 321
 322 static gint
 323 gtk_list_item_focus_in (GtkWidget     *widget,
 324                         GdkEventFocus *event)
 325 {
 326   g_return_val_if_fail (widget != NULL, FALSE);
 327   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 328   g_return_val_if_fail (event != NULL, FALSE);
 329
 330   GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
 331   gtk_widget_draw_focus (widget);
 332
 333   return FALSE;
 334 }
 335
 336 static gint
 337 gtk_list_item_focus_out (GtkWidget     *widget,
 338                          GdkEventFocus *event)
 339 {
 340   g_return_val_if_fail (widget != NULL, FALSE);
 341   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 342   g_return_val_if_fail (event != NULL, FALSE);
 343
 344   GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
 345   gtk_widget_draw_focus (widget);
 346
 347   return FALSE;
 348 }
 349
 350 static void
 351 gtk_real_list_item_select (GtkItem *item)
 352 {
 353   g_return_if_fail (item != NULL);
 354   g_return_if_fail (GTK_IS_LIST_ITEM (item));
 355
 356   if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 357     return;
 358
 359   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 360   gtk_widget_queue_draw (GTK_WIDGET (item));
 361 }
 362
 363 static void
 364 gtk_real_list_item_deselect (GtkItem *item)
 365 {
 366   g_return_if_fail (item != NULL);
 367   g_return_if_fail (GTK_IS_LIST_ITEM (item));
 368
 369   if (GTK_WIDGET (item)->state == GTK_STATE_NORMAL)
 370     return;
 371
 372   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 373   gtk_widget_queue_draw (GTK_WIDGET (item));
 374 }
 375
 376 static void
 377 gtk_real_list_item_toggle (GtkItem *item)
 378 {
 379   g_return_if_fail (item != NULL);
 380   g_return_if_fail (GTK_IS_LIST_ITEM (item));
 381
 382   if (GTK_WIDGET (item)->parent && GTK_IS_LIST (GTK_WIDGET (item)->parent))
 383     gtk_list_select_child (GTK_LIST (GTK_WIDGET (item)->parent),
 384                            GTK_WIDGET (item));
 385   else
 386     {
 387       /* Should we really bother with this bit? A listitem not in a list?
 388        * -Johannes Keukelaar
 389        * yes, always be on the save side!
 390        * -timj
 391        */
 392       if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 393         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 394       else
 395         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 396       gtk_widget_queue_draw (GTK_WIDGET (item));
 397     }
 398 }