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 Free
  16  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18 #include "gtklabel.h"
  19 #include "gtklistitem.h"
  20 #include "gtklist.h"
  21
  22 static void gtk_list_item_class_init    (GtkListItemClass *klass);
  23 static void gtk_list_item_init          (GtkListItem      *list_item);
  24 static void gtk_list_item_realize       (GtkWidget        *widget);
  25 static void gtk_list_item_size_request  (GtkWidget        *widget,
  26                                          GtkRequisition   *requisition);
  27 static void gtk_list_item_size_allocate (GtkWidget        *widget,
  28                                          GtkAllocation    *allocation);
  29 static void gtk_list_item_draw          (GtkWidget        *widget,
  30                                          GdkRectangle     *area);
  31 static void gtk_list_item_draw_focus    (GtkWidget        *widget);
  32 static gint gtk_list_item_button_press  (GtkWidget        *widget,
  33                                          GdkEventButton   *event);
  34 static gint gtk_list_item_expose        (GtkWidget        *widget,
  35                                          GdkEventExpose   *event);
  36 static gint gtk_list_item_focus_in      (GtkWidget        *widget,
  37                                          GdkEventFocus    *event);
  38 static gint gtk_list_item_focus_out     (GtkWidget        *widget,
  39                                          GdkEventFocus    *event);
  40 static void gtk_real_list_item_select   (GtkItem          *item);
  41 static void gtk_real_list_item_deselect (GtkItem          *item);
  42 static void gtk_real_list_item_toggle   (GtkItem          *item);
  43
  44
  45 static GtkItemClass *parent_class = NULL;
  46
  47
  48 guint
  49 gtk_list_item_get_type ()
  50 {
  51   static guint list_item_type = 0;
  52
  53   if (!list_item_type)
  54     {
  55       GtkTypeInfo list_item_info =
  56       {
  57         "GtkListItem",
  58         sizeof (GtkListItem),
  59         sizeof (GtkListItemClass),
  60         (GtkClassInitFunc) gtk_list_item_class_init,
  61         (GtkObjectInitFunc) gtk_list_item_init,
  62         (GtkArgFunc) NULL,
  63       };
  64
  65       list_item_type = gtk_type_unique (gtk_item_get_type (), &list_item_info);
  66     }
  67
  68   return list_item_type;
  69 }
  70
  71 static void
  72 gtk_list_item_class_init (GtkListItemClass *class)
  73 {
  74   GtkWidgetClass *widget_class;
  75   GtkItemClass *item_class;
  76
  77   widget_class = (GtkWidgetClass*) class;
  78   item_class = (GtkItemClass*) class;
  79
  80   parent_class = gtk_type_class (gtk_item_get_type ());
  81
  82   widget_class->realize = gtk_list_item_realize;
  83   widget_class->size_request = gtk_list_item_size_request;
  84   widget_class->size_allocate = gtk_list_item_size_allocate;
  85   widget_class->draw = gtk_list_item_draw;
  86   widget_class->draw_focus = gtk_list_item_draw_focus;
  87   widget_class->button_press_event = gtk_list_item_button_press;
  88   widget_class->expose_event = gtk_list_item_expose;
  89   widget_class->focus_in_event = gtk_list_item_focus_in;
  90   widget_class->focus_out_event = gtk_list_item_focus_out;
  91
  92   item_class->select = gtk_real_list_item_select;
  93   item_class->deselect = gtk_real_list_item_deselect;
  94   item_class->toggle = gtk_real_list_item_toggle;
  95 }
  96
  97 static void
  98 gtk_list_item_init (GtkListItem *list_item)
  99 {
 100   GTK_WIDGET_SET_FLAGS (list_item, GTK_CAN_FOCUS);
 101 }
 102
 103 GtkWidget*
 104 gtk_list_item_new ()
 105 {
 106   return GTK_WIDGET (gtk_type_new (gtk_list_item_get_type ()));
 107 }
 108
 109 GtkWidget*
 110 gtk_list_item_new_with_label (const gchar *label)
 111 {
 112   GtkWidget *list_item;
 113   GtkWidget *label_widget;
 114
 115   list_item = gtk_list_item_new ();
 116   label_widget = gtk_label_new (label);
 117   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 118
 119   gtk_container_add (GTK_CONTAINER (list_item), label_widget);
 120   gtk_widget_show (label_widget);
 121
 122   return list_item;
 123 }
 124
 125 void
 126 gtk_list_item_select (GtkListItem *list_item)
 127 {
 128   gtk_item_select (GTK_ITEM (list_item));
 129 }
 130
 131 void
 132 gtk_list_item_deselect (GtkListItem *list_item)
 133 {
 134   gtk_item_deselect (GTK_ITEM (list_item));
 135 }
 136
 137
 138 static void
 139 gtk_list_item_realize (GtkWidget *widget)
 140 {
 141   g_return_if_fail (widget != NULL);
 142   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 143
 144   if (GTK_WIDGET_CLASS (parent_class)->realize)
 145     (* GTK_WIDGET_CLASS (parent_class)->realize) (widget);
 146
 147   gdk_window_set_background (widget->window, &widget->style->white);
 148 }
 149
 150 static void
 151 gtk_list_item_size_request (GtkWidget      *widget,
 152                             GtkRequisition *requisition)
 153 {
 154   GtkBin *bin;
 155
 156   g_return_if_fail (widget != NULL);
 157   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 158   g_return_if_fail (requisition != NULL);
 159
 160   bin = GTK_BIN (widget);
 161
 162   requisition->width = (GTK_CONTAINER (widget)->border_width +
 163                         widget->style->klass->xthickness) * 2;
 164   requisition->height = GTK_CONTAINER (widget)->border_width * 2;
 165
 166   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 167     {
 168       gtk_widget_size_request (bin->child, &bin->child->requisition);
 169
 170       requisition->width += bin->child->requisition.width;
 171       requisition->height += bin->child->requisition.height;
 172     }
 173 }
 174
 175 static void
 176 gtk_list_item_size_allocate (GtkWidget     *widget,
 177                              GtkAllocation *allocation)
 178 {
 179   GtkBin *bin;
 180   GtkAllocation child_allocation;
 181
 182   g_return_if_fail (widget != NULL);
 183   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 184   g_return_if_fail (allocation != NULL);
 185
 186   widget->allocation = *allocation;
 187   if (GTK_WIDGET_REALIZED (widget))
 188     gdk_window_move_resize (widget->window,
 189                             allocation->x, allocation->y,
 190                             allocation->width, allocation->height);
 191
 192   bin = GTK_BIN (widget);
 193
 194   if (bin->child)
 195     {
 196       child_allocation.x = (GTK_CONTAINER (widget)->border_width +
 197                             widget->style->klass->xthickness);
 198       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 199       child_allocation.width = allocation->width - child_allocation.x * 2;
 200       child_allocation.height = allocation->height - child_allocation.y * 2;
 201
 202       gtk_widget_size_allocate (bin->child, &child_allocation);
 203     }
 204 }
 205
 206 static void
 207 gtk_list_item_draw (GtkWidget    *widget,
 208                     GdkRectangle *area)
 209 {
 210   GtkBin *bin;
 211   GdkRectangle child_area;
 212
 213   g_return_if_fail (widget != NULL);
 214   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 215   g_return_if_fail (area != NULL);
 216
 217   if (GTK_WIDGET_DRAWABLE (widget))
 218     {
 219       bin = GTK_BIN (widget);
 220
 221       if (!GTK_WIDGET_IS_SENSITIVE (widget))
 222         gtk_style_set_background (widget->style, widget->window, GTK_STATE_INSENSITIVE);
 223       else if (widget->state == GTK_STATE_NORMAL)
 224         gdk_window_set_background (widget->window, &widget->style->white);
 225       else
 226         gtk_style_set_background (widget->style, widget->window, widget->state);
 227
 228       gdk_window_clear_area (widget->window, area->x, area->y,
 229                              area->width, area->height);
 230
 231       if (bin->child && gtk_widget_intersect (bin->child, area, &child_area))
 232         gtk_widget_draw (bin->child, &child_area);
 233
 234       gtk_widget_draw_focus (widget);
 235     }
 236 }
 237
 238 static void
 239 gtk_list_item_draw_focus (GtkWidget *widget)
 240 {
 241   GdkGC *gc;
 242
 243   g_return_if_fail (widget != NULL);
 244   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 245
 246   if (GTK_WIDGET_DRAWABLE (widget))
 247     {
 248       if (GTK_WIDGET_HAS_FOCUS (widget))
 249         gc = widget->style->black_gc;
 250       else if (!GTK_WIDGET_IS_SENSITIVE (widget))
 251         gc = widget->style->bg_gc[GTK_STATE_INSENSITIVE];
 252       else if (widget->state == GTK_STATE_NORMAL)
 253         gc = widget->style->white_gc;
 254       else
 255         gc = widget->style->bg_gc[widget->state];
 256
 257       gdk_draw_rectangle (widget->window, gc, FALSE, 0, 0,
 258                           widget->allocation.width - 1,
 259                           widget->allocation.height - 1);
 260     }
 261 }
 262
 263 static gint
 264 gtk_list_item_button_press (GtkWidget      *widget,
 265                             GdkEventButton *event)
 266 {
 267   g_return_val_if_fail (widget != NULL, FALSE);
 268   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 269   g_return_val_if_fail (event != NULL, FALSE);
 270
 271   if (event->type == GDK_BUTTON_PRESS)
 272     if (!GTK_WIDGET_HAS_FOCUS (widget))
 273       gtk_widget_grab_focus (widget);
 274
 275   return FALSE;
 276 }
 277
 278 static gint
 279 gtk_list_item_expose (GtkWidget      *widget,
 280                       GdkEventExpose *event)
 281 {
 282   GtkBin *bin;
 283   GdkEventExpose child_event;
 284
 285   g_return_val_if_fail (widget != NULL, FALSE);
 286   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 287   g_return_val_if_fail (event != NULL, FALSE);
 288
 289   if (GTK_WIDGET_DRAWABLE (widget))
 290     {
 291       bin = GTK_BIN (widget);
 292
 293       if (!GTK_WIDGET_IS_SENSITIVE (widget))
 294         gdk_window_set_background (widget->window, &widget->style->bg[GTK_STATE_INSENSITIVE]);
 295       else if (widget->state == GTK_STATE_NORMAL)
 296         gdk_window_set_background (widget->window, &widget->style->white);
 297       else
 298         gdk_window_set_background (widget->window, &widget->style->bg[widget->state]);
 299
 300       gdk_window_clear_area (widget->window, event->area.x, event->area.y,
 301                              event->area.width, event->area.height);
 302
 303       if (bin->child)
 304         {
 305           child_event = *event;
 306
 307           if (GTK_WIDGET_NO_WINDOW (bin->child) &&
 308               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 309             gtk_widget_event (bin->child, (GdkEvent*) &child_event);
 310         }
 311
 312       gtk_widget_draw_focus (widget);
 313     }
 314
 315   return FALSE;
 316 }
 317
 318 static gint
 319 gtk_list_item_focus_in (GtkWidget     *widget,
 320                         GdkEventFocus *event)
 321 {
 322   g_return_val_if_fail (widget != NULL, FALSE);
 323   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 324   g_return_val_if_fail (event != NULL, FALSE);
 325
 326   GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
 327   gtk_widget_draw_focus (widget);
 328
 329   return FALSE;
 330 }
 331
 332 static gint
 333 gtk_list_item_focus_out (GtkWidget     *widget,
 334                          GdkEventFocus *event)
 335 {
 336   g_return_val_if_fail (widget != NULL, FALSE);
 337   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 338   g_return_val_if_fail (event != NULL, FALSE);
 339
 340   GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
 341   gtk_widget_draw_focus (widget);
 342
 343   return FALSE;
 344 }
 345
 346 static void
 347 gtk_real_list_item_select (GtkItem *item)
 348 {
 349   g_return_if_fail (item != NULL);
 350   g_return_if_fail (GTK_IS_LIST_ITEM (item));
 351
 352   if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 353     return;
 354
 355   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 356   gtk_widget_queue_draw (GTK_WIDGET (item));
 357 }
 358
 359 static void
 360 gtk_real_list_item_deselect (GtkItem *item)
 361 {
 362   g_return_if_fail (item != NULL);
 363   g_return_if_fail (GTK_IS_LIST_ITEM (item));
 364
 365   if (GTK_WIDGET (item)->state == GTK_STATE_NORMAL)
 366     return;
 367
 368   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 369   gtk_widget_queue_draw (GTK_WIDGET (item));
 370 }
 371
 372 static void
 373 gtk_real_list_item_toggle (GtkItem *item)
 374 {
 375   g_return_if_fail (item != NULL);
 376   g_return_if_fail (GTK_IS_LIST_ITEM (item));
 377
 378   if (GTK_WIDGET (item)->parent && GTK_IS_LIST (GTK_WIDGET (item)->parent))
 379     gtk_list_select_child (GTK_LIST (GTK_WIDGET (item)->parent),
 380                            GTK_WIDGET (item));
 381   else
 382     {
 383       /* Should we really bother with this bit? A listitem not in a list?
 384        * -Johannes Keukelaar
 385        * yes, always be on the save side!
 386        * -timj
 387        */
 388       if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 389         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 390       else
 391         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 392       gtk_widget_queue_draw (GTK_WIDGET (item));
 393     }
 394 }