Pileus Git - ~andy/gtk/blob - gtk/gtktearoffmenuitem.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 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 <config.h>
  28
  29 #include "gtkmenu.h"
  30 #include "gtktearoffmenuitem.h"
  31 #include "gtkintl.h"
  32 #include "gtkalias.h"
  33
  34 #define ARROW_SIZE 10
  35 #define TEAR_LENGTH 5
  36 #define BORDER_SPACING  3
  37
  38 static void gtk_tearoff_menu_item_class_init (GtkTearoffMenuItemClass *klass);
  39 static void gtk_tearoff_menu_item_init       (GtkTearoffMenuItem      *tearoff_menu_item);
  40 static void gtk_tearoff_menu_item_size_request (GtkWidget             *widget,
  41                                                 GtkRequisition        *requisition);
  42 static gint gtk_tearoff_menu_item_expose     (GtkWidget             *widget,
  43                                               GdkEventExpose        *event);
  44 static void gtk_tearoff_menu_item_activate   (GtkMenuItem           *menu_item);
  45 static void gtk_tearoff_menu_item_parent_set (GtkWidget             *widget,
  46                                               GtkWidget             *previous);
  47
  48 GType
  49 gtk_tearoff_menu_item_get_type (void)
  50 {
  51   static GType tearoff_menu_item_type = 0;
  52
  53   if (!tearoff_menu_item_type)
  54     {
  55       static const GTypeInfo tearoff_menu_item_info =
  56       {
  57         sizeof (GtkTearoffMenuItemClass),
  58         NULL,           /* base_init */
  59         NULL,           /* base_finalize */
  60         (GClassInitFunc) gtk_tearoff_menu_item_class_init,
  61         NULL,           /* class_finalize */
  62         NULL,           /* class_data */
  63         sizeof (GtkTearoffMenuItem),
  64         0,              /* n_preallocs */
  65         (GInstanceInitFunc) gtk_tearoff_menu_item_init,
  66       };
  67
  68       tearoff_menu_item_type =
  69         g_type_register_static (GTK_TYPE_MENU_ITEM, I_("GtkTearoffMenuItem"),
  70                                 &tearoff_menu_item_info, 0);
  71     }
  72
  73   return tearoff_menu_item_type;
  74 }
  75
  76 GtkWidget*
  77 gtk_tearoff_menu_item_new (void)
  78 {
  79   return g_object_new (GTK_TYPE_TEAROFF_MENU_ITEM, NULL);
  80 }
  81
  82 static void
  83 gtk_tearoff_menu_item_class_init (GtkTearoffMenuItemClass *klass)
  84 {
  85   GtkWidgetClass *widget_class;
  86   GtkMenuItemClass *menu_item_class;
  87
  88   widget_class = (GtkWidgetClass*) klass;
  89   menu_item_class = (GtkMenuItemClass*) klass;
  90
  91   widget_class->expose_event = gtk_tearoff_menu_item_expose;
  92   widget_class->size_request = gtk_tearoff_menu_item_size_request;
  93   widget_class->parent_set = gtk_tearoff_menu_item_parent_set;
  94
  95   menu_item_class->activate = gtk_tearoff_menu_item_activate;
  96 }
  97
  98 static void
  99 gtk_tearoff_menu_item_init (GtkTearoffMenuItem *tearoff_menu_item)
 100 {
 101   tearoff_menu_item->torn_off = FALSE;
 102 }
 103
 104 static void
 105 gtk_tearoff_menu_item_size_request (GtkWidget      *widget,
 106                                     GtkRequisition *requisition)
 107 {
 108   requisition->width = (GTK_CONTAINER (widget)->border_width +
 109                         widget->style->xthickness +
 110                         BORDER_SPACING) * 2;
 111   requisition->height = (GTK_CONTAINER (widget)->border_width +
 112                          widget->style->ythickness) * 2;
 113
 114   if (GTK_IS_MENU (widget->parent) && GTK_MENU (widget->parent)->torn_off)
 115     {
 116       requisition->height += ARROW_SIZE;
 117     }
 118   else
 119     {
 120       requisition->height += widget->style->ythickness + 4;
 121     }
 122 }
 123
 124 static void
 125 gtk_tearoff_menu_item_paint (GtkWidget   *widget,
 126                              GdkRectangle *area)
 127 {
 128   GtkMenuItem *menu_item;
 129   GtkShadowType shadow_type;
 130   gint width, height;
 131   gint x, y;
 132   gint right_max;
 133   GtkArrowType arrow_type;
 134   GtkTextDirection direction;
 135
 136   if (GTK_WIDGET_DRAWABLE (widget))
 137     {
 138       menu_item = GTK_MENU_ITEM (widget);
 139
 140       direction = gtk_widget_get_direction (widget);
 141
 142       x = widget->allocation.x + GTK_CONTAINER (menu_item)->border_width;
 143       y = widget->allocation.y + GTK_CONTAINER (menu_item)->border_width;
 144       width = widget->allocation.width - GTK_CONTAINER (menu_item)->border_width * 2;
 145       height = widget->allocation.height - GTK_CONTAINER (menu_item)->border_width * 2;
 146       right_max = x + width;
 147
 148       if (widget->state == GTK_STATE_PRELIGHT)
 149         {
 150           gint selected_shadow_type;
 151
 152           gtk_widget_style_get (widget,
 153                                 "selected-shadow-type", &selected_shadow_type,
 154                                 NULL);
 155           gtk_paint_box (widget->style,
 156                          widget->window,
 157                          GTK_STATE_PRELIGHT,
 158                          selected_shadow_type,
 159                          area, widget, "menuitem",
 160                          x, y, width, height);
 161         }
 162       else
 163         gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
 164
 165       if (GTK_IS_MENU (widget->parent) && GTK_MENU (widget->parent)->torn_off)
 166         {
 167           gint arrow_x;
 168
 169           if (widget->state == GTK_STATE_PRELIGHT)
 170             shadow_type = GTK_SHADOW_IN;
 171           else
 172             shadow_type = GTK_SHADOW_OUT;
 173
 174           if (menu_item->toggle_size > ARROW_SIZE)
 175             {
 176               if (direction == GTK_TEXT_DIR_LTR) {
 177                 arrow_x = x + (menu_item->toggle_size - ARROW_SIZE)/2;
 178                 arrow_type = GTK_ARROW_LEFT;
 179               }
 180               else {
 181                 arrow_x = x + width - menu_item->toggle_size + (menu_item->toggle_size - ARROW_SIZE)/2;
 182                 arrow_type = GTK_ARROW_RIGHT;
 183               }
 184               x += menu_item->toggle_size + BORDER_SPACING;
 185             }
 186           else
 187             {
 188               if (direction == GTK_TEXT_DIR_LTR) {
 189                 arrow_x = ARROW_SIZE / 2;
 190                 arrow_type = GTK_ARROW_LEFT;
 191               }
 192               else {
 193                 arrow_x = x + width - 2 * ARROW_SIZE + ARROW_SIZE / 2;
 194                 arrow_type = GTK_ARROW_RIGHT;
 195               }
 196               x += 2 * ARROW_SIZE;
 197             }
 198
 199
 200           gtk_paint_arrow (widget->style, widget->window,
 201                            widget->state, shadow_type,
 202                            NULL, widget, "tearoffmenuitem",
 203                            arrow_type, FALSE,
 204                            arrow_x, y + height / 2 - 5,
 205                            ARROW_SIZE, ARROW_SIZE);
 206         }
 207
 208       while (x < right_max)
 209         {
 210           gint x1, x2;
 211
 212           if (direction == GTK_TEXT_DIR_LTR) {
 213             x1 = x;
 214             x2 = MIN (x + TEAR_LENGTH, right_max);
 215           }
 216           else {
 217             x1 = right_max - x;
 218             x2 = MAX (right_max - x - TEAR_LENGTH, 0);
 219           }
 220
 221           gtk_paint_hline (widget->style, widget->window, GTK_STATE_NORMAL,
 222                            NULL, widget, "tearoffmenuitem",
 223                            x1, x2, y + (height - widget->style->ythickness) / 2);
 224           x += 2 * TEAR_LENGTH;
 225         }
 226     }
 227 }
 228
 229 static gint
 230 gtk_tearoff_menu_item_expose (GtkWidget      *widget,
 231                             GdkEventExpose *event)
 232 {
 233   gtk_tearoff_menu_item_paint (widget, &event->area);
 234
 235   return FALSE;
 236 }
 237
 238 static void
 239 gtk_tearoff_menu_item_activate (GtkMenuItem *menu_item)
 240 {
 241   if (GTK_IS_MENU (GTK_WIDGET (menu_item)->parent))
 242     {
 243       GtkMenu *menu = GTK_MENU (GTK_WIDGET (menu_item)->parent);
 244
 245       gtk_widget_queue_resize (GTK_WIDGET (menu_item));
 246       gtk_menu_set_tearoff_state (GTK_MENU (GTK_WIDGET (menu_item)->parent),
 247                                   !menu->torn_off);
 248     }
 249 }
 250
 251 static void
 252 tearoff_state_changed (GtkMenu            *menu,
 253                        GParamSpec         *pspec,
 254                        gpointer            data)
 255 {
 256   GtkTearoffMenuItem *tearoff_menu_item = GTK_TEAROFF_MENU_ITEM (data);
 257
 258   tearoff_menu_item->torn_off = gtk_menu_get_tearoff_state (menu);
 259 }
 260
 261 static void
 262 gtk_tearoff_menu_item_parent_set (GtkWidget *widget,
 263                                   GtkWidget *previous)
 264 {
 265   GtkTearoffMenuItem *tearoff_menu_item = GTK_TEAROFF_MENU_ITEM (widget);
 266   GtkMenu *menu = GTK_IS_MENU (widget->parent) ? GTK_MENU (widget->parent) : NULL;
 267
 268   if (previous)
 269     g_signal_handlers_disconnect_by_func (previous,
 270                                           tearoff_state_changed,
 271                                           tearoff_menu_item);
 272
 273   if (menu)
 274     {
 275       tearoff_menu_item->torn_off = gtk_menu_get_tearoff_state (menu);
 276       g_signal_connect (menu, "notify::tearoff-state",
 277                         G_CALLBACK (tearoff_state_changed),
 278                         tearoff_menu_item);
 279     }
 280 }
 281
 282 #define __GTK_TEAROFF_MENU_ITEM_C__
 283 #include "gtkaliasdef.c"