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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 2001 Red Hat, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser 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  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser 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
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "gtkimagemenuitem.h"
  28 #include "gtkaccellabel.h"
  29 #include "gtksignal.h"
  30 #include "gtkintl.h"
  31
  32 static void gtk_image_menu_item_class_init           (GtkImageMenuItemClass *klass);
  33 static void gtk_image_menu_item_init                 (GtkImageMenuItem      *image_menu_item);
  34 static void gtk_image_menu_item_size_request         (GtkWidget        *widget,
  35                                                       GtkRequisition   *requisition);
  36 static void gtk_image_menu_item_size_allocate        (GtkWidget        *widget,
  37                                                       GtkAllocation    *allocation);
  38 static void gtk_image_menu_item_remove               (GtkContainer          *container,
  39                                                       GtkWidget             *child);
  40 static void gtk_image_menu_item_toggle_size_request  (GtkMenuItem           *menu_item,
  41                                                       gint                  *requisition);
  42
  43 static void gtk_image_menu_item_map        (GtkWidget      *widget);
  44 static void gtk_image_menu_item_unmap      (GtkWidget      *widget);
  45 static void gtk_image_menu_item_forall     (GtkContainer   *container,
  46                                             gboolean        include_internals,
  47                                             GtkCallback     callback,
  48                                             gpointer        callback_data);
  49
  50 static void gtk_image_menu_item_set_property (GObject         *object,
  51                                               guint            prop_id,
  52                                               const GValue    *value,
  53                                               GParamSpec      *pspec);
  54 static void gtk_image_menu_item_get_property (GObject         *object,
  55                                               guint            prop_id,
  56                                               GValue          *value,
  57                                               GParamSpec      *pspec);
  58
  59
  60 enum {
  61   PROP_ZERO,
  62   PROP_IMAGE
  63 };
  64
  65 static GtkMenuItemClass *parent_class = NULL;
  66
  67 GtkType
  68 gtk_image_menu_item_get_type (void)
  69 {
  70   static GtkType image_menu_item_type = 0;
  71
  72   if (!image_menu_item_type)
  73     {
  74       static const GtkTypeInfo image_menu_item_info =
  75       {
  76         "GtkImageMenuItem",
  77         sizeof (GtkImageMenuItem),
  78         sizeof (GtkImageMenuItemClass),
  79         (GtkClassInitFunc) gtk_image_menu_item_class_init,
  80         (GtkObjectInitFunc) gtk_image_menu_item_init,
  81         /* reserved_1 */ NULL,
  82         /* reserved_2 */ NULL,
  83         (GtkClassInitFunc) NULL,
  84       };
  85
  86       image_menu_item_type = gtk_type_unique (GTK_TYPE_MENU_ITEM, &image_menu_item_info);
  87     }
  88
  89   return image_menu_item_type;
  90 }
  91
  92 static void
  93 gtk_image_menu_item_class_init (GtkImageMenuItemClass *klass)
  94 {
  95   GObjectClass *gobject_class;
  96   GtkObjectClass *object_class;
  97   GtkWidgetClass *widget_class;
  98   GtkMenuItemClass *menu_item_class;
  99   GtkContainerClass *container_class;
 100
 101   gobject_class = (GObjectClass*) klass;
 102   object_class = (GtkObjectClass*) klass;
 103   widget_class = (GtkWidgetClass*) klass;
 104   menu_item_class = (GtkMenuItemClass*) klass;
 105   container_class = (GtkContainerClass*) klass;
 106
 107   parent_class = gtk_type_class (GTK_TYPE_MENU_ITEM);
 108
 109   widget_class->size_request = gtk_image_menu_item_size_request;
 110   widget_class->size_allocate = gtk_image_menu_item_size_allocate;
 111   widget_class->map = gtk_image_menu_item_map;
 112   widget_class->unmap = gtk_image_menu_item_unmap;
 113
 114   container_class->forall = gtk_image_menu_item_forall;
 115   container_class->remove = gtk_image_menu_item_remove;
 116
 117   menu_item_class->toggle_size_request = gtk_image_menu_item_toggle_size_request;
 118
 119   gobject_class->set_property = gtk_image_menu_item_set_property;
 120   gobject_class->get_property = gtk_image_menu_item_get_property;
 121
 122   g_object_class_install_property (gobject_class,
 123                                    PROP_IMAGE,
 124                                    g_param_spec_object ("image",
 125                                                         _("Image widget"),
 126                                                         _("Child widget to appear next to the menu text"),
 127                                                         GTK_TYPE_WIDGET,
 128                                                         G_PARAM_READABLE | G_PARAM_WRITABLE));
 129 }
 130
 131 static void
 132 gtk_image_menu_item_init (GtkImageMenuItem *image_menu_item)
 133 {
 134   image_menu_item->image = NULL;
 135 }
 136
 137 static void
 138 gtk_image_menu_item_set_property (GObject         *object,
 139                                   guint            prop_id,
 140                                   const GValue    *value,
 141                                   GParamSpec      *pspec)
 142 {
 143   GtkImageMenuItem *image_menu_item = GTK_IMAGE_MENU_ITEM (object);
 144
 145   switch (prop_id)
 146     {
 147     case PROP_IMAGE:
 148       {
 149         GtkWidget *child;
 150
 151         child = (GtkWidget*) g_value_get_object (value);
 152
 153         if (child != image_menu_item->image)
 154           {
 155             if (image_menu_item->image)
 156               gtk_container_remove (GTK_CONTAINER (image_menu_item),
 157                                     image_menu_item->image);
 158
 159             if (child)
 160               {
 161                 gtk_image_menu_item_add_image (image_menu_item,
 162                                                child);
 163               }
 164           }
 165       }
 166       break;
 167     default:
 168       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 169       break;
 170     }
 171 }
 172 static void
 173 gtk_image_menu_item_get_property (GObject         *object,
 174                                   guint            prop_id,
 175                                   GValue          *value,
 176                                   GParamSpec      *pspec)
 177 {
 178   GtkImageMenuItem *image_menu_item = GTK_IMAGE_MENU_ITEM (object);
 179
 180   switch (prop_id)
 181     {
 182     case PROP_IMAGE:
 183       g_value_set_object (value,
 184                           (GObject*) image_menu_item->image);
 185       break;
 186     default:
 187       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 188       break;
 189     }
 190 }
 191
 192
 193 static void
 194 gtk_image_menu_item_toggle_size_request (GtkMenuItem *menu_item,
 195                                          gint        *requisition)
 196 {
 197   GtkImageMenuItem *image_menu_item;
 198
 199   g_return_if_fail (menu_item != NULL);
 200   g_return_if_fail (GTK_IS_IMAGE_MENU_ITEM (menu_item));
 201
 202   image_menu_item = GTK_IMAGE_MENU_ITEM (menu_item);
 203
 204   if (image_menu_item->image)
 205     *requisition = image_menu_item->image->requisition.width;
 206   else
 207     *requisition = 0;
 208 }
 209
 210
 211 static void
 212 gtk_image_menu_item_size_request (GtkWidget      *widget,
 213                                   GtkRequisition *requisition)
 214 {
 215   GtkImageMenuItem *image_menu_item;
 216   gint child_height = 0;
 217
 218   image_menu_item = GTK_IMAGE_MENU_ITEM (widget);
 219
 220   if (image_menu_item->image && GTK_WIDGET_VISIBLE (image_menu_item->image))
 221     {
 222       GtkRequisition child_requisition;
 223
 224       gtk_widget_size_request (image_menu_item->image,
 225                                &child_requisition);
 226
 227       child_height = child_requisition.height;
 228     }
 229
 230   (* GTK_WIDGET_CLASS (parent_class)->size_request) (widget, requisition);
 231
 232   /* not done with height since that happens via the
 233    * toggle_size_request
 234    */
 235   requisition->height = MAX (requisition->height, child_height);
 236
 237   /* Note that GtkMenuShell always size requests before
 238    * toggle_size_request, so toggle_size_request will be able to use
 239    * image_menu_item->image->requisition
 240    */
 241 }
 242
 243 static void
 244 gtk_image_menu_item_size_allocate (GtkWidget     *widget,
 245                                    GtkAllocation *allocation)
 246 {
 247   GtkImageMenuItem *image_menu_item;
 248
 249   image_menu_item = GTK_IMAGE_MENU_ITEM (widget);
 250
 251   (* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
 252
 253   if (image_menu_item->image)
 254     {
 255       gint width, height, x, y;
 256       GtkAllocation child_allocation;
 257
 258       /* Man this is lame hardcoding action, but I can't
 259        * come up with a solution that's really better.
 260        */
 261
 262       width = image_menu_item->image->requisition.width;
 263       height = image_menu_item->image->requisition.height;
 264
 265       x = (GTK_CONTAINER (image_menu_item)->border_width +
 266            widget->style->xthickness) +
 267         (GTK_MENU_ITEM (image_menu_item)->toggle_size - width) / 2;
 268       y = (widget->allocation.height - height) / 2;
 269
 270       child_allocation.width = width;
 271       child_allocation.height = height;
 272       child_allocation.x = MAX (x, 0);
 273       child_allocation.y = MAX (y, 0);
 274
 275       gtk_widget_size_allocate (image_menu_item->image, &child_allocation);
 276     }
 277 }
 278
 279 static void
 280 gtk_image_menu_item_map (GtkWidget *widget)
 281 {
 282   GtkImageMenuItem *image_menu_item;
 283
 284   g_return_if_fail (GTK_IS_IMAGE_MENU_ITEM (widget));
 285
 286   image_menu_item = GTK_IMAGE_MENU_ITEM (widget);
 287
 288   (* GTK_WIDGET_CLASS (parent_class)->map) (widget);
 289
 290   if (image_menu_item->image &&
 291       GTK_WIDGET_VISIBLE (image_menu_item->image) &&
 292       !GTK_WIDGET_MAPPED (image_menu_item->image))
 293     gtk_widget_map (image_menu_item->image);
 294
 295   if (!GTK_WIDGET_NO_WINDOW (widget))
 296     gdk_window_show (widget->window);
 297 }
 298
 299 static void
 300 gtk_image_menu_item_unmap (GtkWidget *widget)
 301 {
 302   GtkImageMenuItem *image_menu_item;
 303
 304   g_return_if_fail (GTK_IS_IMAGE_MENU_ITEM (widget));
 305
 306   image_menu_item = GTK_IMAGE_MENU_ITEM (widget);
 307
 308   (* GTK_WIDGET_CLASS (parent_class)->unmap) (widget);
 309
 310   if (!GTK_WIDGET_NO_WINDOW (widget))
 311     gdk_window_hide (widget->window);
 312
 313   if (image_menu_item->image && GTK_WIDGET_MAPPED (image_menu_item->image))
 314     gtk_widget_unmap (image_menu_item->image);
 315 }
 316
 317 static void
 318 gtk_image_menu_item_forall (GtkContainer   *container,
 319                             gboolean        include_internals,
 320                             GtkCallback     callback,
 321                             gpointer        callback_data)
 322 {
 323   GtkImageMenuItem *image_menu_item;
 324
 325   g_return_if_fail (GTK_IS_IMAGE_MENU_ITEM (container));
 326
 327   image_menu_item = GTK_IMAGE_MENU_ITEM (container);
 328
 329   (* GTK_CONTAINER_CLASS (parent_class)->forall) (container,
 330                                                   include_internals,
 331                                                   callback,
 332                                                   callback_data);
 333
 334   if (image_menu_item->image)
 335     (* callback) (image_menu_item->image, callback_data);
 336 }
 337
 338 GtkWidget*
 339 gtk_image_menu_item_new (GtkWidget   *widget,
 340                          const gchar *label)
 341 {
 342   GtkImageMenuItem *image_menu_item;
 343   GtkWidget *accel_label;
 344
 345   image_menu_item = GTK_IMAGE_MENU_ITEM (g_object_new (GTK_TYPE_IMAGE_MENU_ITEM,
 346                                                        NULL));
 347
 348   accel_label = gtk_accel_label_new (label);
 349   gtk_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
 350
 351   gtk_container_add (GTK_CONTAINER (image_menu_item), accel_label);
 352   gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label),
 353                                     GTK_WIDGET (image_menu_item));
 354   gtk_widget_show (accel_label);
 355
 356   if (widget)
 357     gtk_image_menu_item_add_image (image_menu_item, widget);
 358
 359   return GTK_WIDGET(image_menu_item);
 360 }
 361
 362 void
 363 gtk_image_menu_item_add_image (GtkImageMenuItem *image_menu_item,
 364                                GtkWidget        *child)
 365 {
 366   g_return_if_fail (GTK_IS_IMAGE_MENU_ITEM (image_menu_item));
 367   g_return_if_fail (image_menu_item->image == NULL);
 368
 369   gtk_widget_set_parent (child, GTK_WIDGET (image_menu_item));
 370   image_menu_item->image = child;
 371
 372   g_object_notify (G_OBJECT (image_menu_item), "image");
 373
 374   if (GTK_WIDGET_REALIZED (child->parent))
 375     gtk_widget_realize (child);
 376
 377   if (GTK_WIDGET_VISIBLE (child->parent) && GTK_WIDGET_VISIBLE (child))
 378     {
 379       if (GTK_WIDGET_MAPPED (child->parent))
 380         gtk_widget_map (child);
 381
 382       gtk_widget_queue_resize (child);
 383     }
 384 }
 385
 386 GtkWidget*
 387 gtk_image_menu_item_get_image (GtkImageMenuItem *image_menu_item)
 388 {
 389   g_return_val_if_fail (GTK_IS_IMAGE_MENU_ITEM (image_menu_item), NULL);
 390
 391   return image_menu_item->image;
 392 }
 393
 394 static void
 395 gtk_image_menu_item_remove (GtkContainer *container,
 396                             GtkWidget    *child)
 397 {
 398   GtkImageMenuItem *image_menu_item;
 399
 400   image_menu_item = GTK_IMAGE_MENU_ITEM (container);
 401
 402   if (child == image_menu_item->image)
 403     {
 404       gboolean widget_was_visible;
 405
 406       widget_was_visible = GTK_WIDGET_VISIBLE (child);
 407
 408       gtk_widget_unparent (child);
 409       image_menu_item->image = NULL;
 410
 411       if (GTK_WIDGET_VISIBLE (container) && widget_was_visible)
 412         gtk_widget_queue_resize (GTK_WIDGET (container));
 413
 414       g_object_notify (G_OBJECT (image_menu_item), "image");
 415     }
 416   else
 417     {
 418       (* GTK_CONTAINER_CLASS (parent_class)->remove) (container, child);
 419     }
 420 }
 421
 422