Pileus Git - ~andy/gtk/blob - gtk/gtkwin32embedwidget.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 Free
  16  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 /*
  20  * Modified by the GTK+ Team and others 1997-2006.  See the AUTHORS
  21  * file for a list of people on the GTK+ Team.  See the ChangeLog
  22  * files for a list of changes.  These files are distributed with
  23  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  24  */
  25
  26 #include "config.h"
  27
  28 #include "gtkmain.h"
  29 #include "gtkmarshalers.h"
  30 #include "gtksizerequest.h"
  31 #include "gtkwin32embedwidget.h"
  32 #include "gtkintl.h"
  33 #include "gtkprivate.h"
  34 #include "gtkwindowprivate.h"
  35
  36
  37 static void            gtk_win32_embed_widget_realize               (GtkWidget        *widget);
  38 static void            gtk_win32_embed_widget_unrealize             (GtkWidget        *widget);
  39 static void            gtk_win32_embed_widget_show                  (GtkWidget        *widget);
  40 static void            gtk_win32_embed_widget_hide                  (GtkWidget        *widget);
  41 static void            gtk_win32_embed_widget_map                   (GtkWidget        *widget);
  42 static void            gtk_win32_embed_widget_unmap                 (GtkWidget        *widget);
  43 static void            gtk_win32_embed_widget_size_allocate         (GtkWidget        *widget,
  44                                                                      GtkAllocation    *allocation);
  45 static void            gtk_win32_embed_widget_set_focus             (GtkWindow        *window,
  46                                                                      GtkWidget        *focus);
  47 static gboolean        gtk_win32_embed_widget_focus                 (GtkWidget        *widget,
  48                                                                      GtkDirectionType  direction);
  49 static void            gtk_win32_embed_widget_check_resize          (GtkContainer     *container);
  50
  51 static GtkBinClass *bin_class = NULL;
  52
  53 G_DEFINE_TYPE (GtkWin32EmbedWidget, gtk_win32_embed_widget, GTK_TYPE_WINDOW)
  54
  55 static void
  56 gtk_win32_embed_widget_class_init (GtkWin32EmbedWidgetClass *class)
  57 {
  58   GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
  59   GtkWindowClass *window_class = (GtkWindowClass *)class;
  60   GtkContainerClass *container_class = (GtkContainerClass *)class;
  61
  62   bin_class = g_type_class_peek (GTK_TYPE_BIN);
  63
  64   widget_class->realize = gtk_win32_embed_widget_realize;
  65   widget_class->unrealize = gtk_win32_embed_widget_unrealize;
  66
  67   widget_class->show = gtk_win32_embed_widget_show;
  68   widget_class->hide = gtk_win32_embed_widget_hide;
  69   widget_class->map = gtk_win32_embed_widget_map;
  70   widget_class->unmap = gtk_win32_embed_widget_unmap;
  71   widget_class->size_allocate = gtk_win32_embed_widget_size_allocate;
  72
  73   widget_class->focus = gtk_win32_embed_widget_focus;
  74
  75   container_class->check_resize = gtk_win32_embed_widget_check_resize;
  76
  77   window_class->set_focus = gtk_win32_embed_widget_set_focus;
  78 }
  79
  80 static void
  81 gtk_win32_embed_widget_init (GtkWin32EmbedWidget *embed_widget)
  82 {
  83   GtkWindow *window;
  84
  85   window = GTK_WINDOW (embed_widget);
  86
  87   _gtk_widget_set_is_toplevel (GTK_WIDGET (embed_widget), TRUE);
  88   gtk_container_set_resize_mode (GTK_CONTAINER (embed_widget), GTK_RESIZE_QUEUE);
  89 }
  90
  91 GtkWidget*
  92 _gtk_win32_embed_widget_new (HWND parent)
  93 {
  94   GtkWin32EmbedWidget *embed_widget;
  95
  96   embed_widget = g_object_new (GTK_TYPE_WIN32_EMBED_WIDGET, NULL);
  97
  98   embed_widget->parent_window =
  99     gdk_win32_window_lookup_for_display (gdk_display_get_default (),
 100                                          parent);
 101
 102   if (!embed_widget->parent_window)
 103     embed_widget->parent_window =
 104       gdk_win32_window_foreign_new_for_display (gdk_display_get_default (),
 105                                           parent);
 106
 107   return GTK_WIDGET (embed_widget);
 108 }
 109
 110 BOOL
 111 _gtk_win32_embed_widget_dialog_procedure (GtkWin32EmbedWidget *embed_widget,
 112                                           HWND wnd, UINT message, WPARAM wparam, LPARAM lparam)
 113 {
 114   GtkAllocation allocation;
 115   GtkWidget *widget = GTK_WIDGET (embed_widget);
 116
 117  if (message == WM_SIZE)
 118    {
 119      allocation.width = LOWORD(lparam);
 120      allocation.height = HIWORD(lparam);
 121      gtk_widget_set_allocation (widget, &allocation);
 122
 123      gtk_widget_queue_resize (widget);
 124    }
 125
 126  return 0;
 127 }
 128
 129 static void
 130 gtk_win32_embed_widget_unrealize (GtkWidget *widget)
 131 {
 132   GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
 133
 134   embed_widget->old_window_procedure = NULL;
 135
 136   if (embed_widget->parent_window != NULL)
 137     {
 138       gdk_window_set_user_data (embed_widget->parent_window, NULL);
 139       g_object_unref (embed_widget->parent_window);
 140       embed_widget->parent_window = NULL;
 141     }
 142
 143   GTK_WIDGET_CLASS (gtk_win32_embed_widget_parent_class)->unrealize (widget);
 144 }
 145
 146 static LRESULT CALLBACK
 147 gtk_win32_embed_widget_window_process (HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
 148 {
 149   GdkWindow *window;
 150   GtkWin32EmbedWidget *embed_widget;
 151   gpointer user_data;
 152
 153   window = gdk_win32_window_lookup_for_display (gdk_display_get_default (), hwnd);
 154   if (window == NULL) {
 155     g_warning ("No such window!");
 156     return 0;
 157   }
 158   gdk_window_get_user_data (window, &user_data);
 159   embed_widget = GTK_WIN32_EMBED_WIDGET (user_data);
 160
 161   if (msg == WM_GETDLGCODE) {
 162     return DLGC_WANTALLKEYS;
 163   }
 164
 165   if (embed_widget && embed_widget->old_window_procedure)
 166     return CallWindowProc(embed_widget->old_window_procedure,
 167                           hwnd, msg, wparam, lparam);
 168   else
 169     return 0;
 170 }
 171
 172 static void
 173 gtk_win32_embed_widget_realize (GtkWidget *widget)
 174 {
 175   GtkWindow *window = GTK_WINDOW (widget);
 176   GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
 177   GtkAllocation allocation;
 178   GdkWindow *gdk_window;
 179   GdkWindowAttr attributes;
 180   gint attributes_mask;
 181   LONG_PTR styles;
 182
 183   gtk_widget_get_allocation (widget, &allocation);
 184
 185   /* ensure widget tree is properly size allocated */
 186   if (allocation.x == -1 && allocation.y == -1 &&
 187       allocation.width == 1 && allocation.height == 1)
 188     {
 189       GtkRequisition requisition;
 190       GtkAllocation allocation = { 0, 0, 200, 200 };
 191
 192       gtk_widget_get_preferred_size (widget, &requisition, NULL);
 193       if (requisition.width || requisition.height)
 194         {
 195           /* non-empty window */
 196           allocation.width = requisition.width;
 197           allocation.height = requisition.height;
 198         }
 199       gtk_widget_size_allocate (widget, &allocation);
 200
 201       _gtk_container_queue_resize (GTK_CONTAINER (widget));
 202
 203       g_return_if_fail (!gtk_widget_get_realized (widget));
 204     }
 205
 206   gtk_widget_set_realized (widget, TRUE);
 207
 208   gtk_widget_get_allocation (widget, &allocation);
 209
 210   attributes.window_type = GDK_WINDOW_CHILD;
 211   attributes.title = gtk_window_get_title (window);
 212   _gtk_window_get_wmclass (window, &attributes.wmclass_name, &attributes.wmclass_class);
 213   attributes.width = allocation.width;
 214   attributes.height = allocation.height;
 215   attributes.wclass = GDK_INPUT_OUTPUT;
 216
 217   /* this isn't right - we should match our parent's visual/colormap.
 218    * though that will require handling "foreign" colormaps */
 219   attributes.visual = gtk_widget_get_visual (widget);
 220   attributes.event_mask = gtk_widget_get_events (widget);
 221   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 222                             GDK_KEY_PRESS_MASK |
 223                             GDK_KEY_RELEASE_MASK |
 224                             GDK_ENTER_NOTIFY_MASK |
 225                             GDK_LEAVE_NOTIFY_MASK |
 226                             GDK_STRUCTURE_MASK |
 227                             GDK_FOCUS_CHANGE_MASK);
 228
 229   attributes_mask = GDK_WA_VISUAL;
 230   attributes_mask |= (gtk_window_get_title (window) ? GDK_WA_TITLE : 0);
 231   attributes_mask |= (attributes.wmclass_name ? GDK_WA_WMCLASS : 0);
 232
 233   gdk_window = gdk_window_new (embed_widget->parent_window,
 234                                &attributes, attributes_mask);
 235   gtk_widget_set_window (widget, gdk_window);
 236   gdk_window_set_user_data (gdk_window, window);
 237
 238   embed_widget->old_window_procedure = (gpointer)
 239     SetWindowLongPtrW(GDK_WINDOW_HWND (gdk_window),
 240                       GWLP_WNDPROC,
 241                       (LONG_PTR)gtk_win32_embed_widget_window_process);
 242
 243   /* Enable tab to focus the widget */
 244   styles = GetWindowLongPtr(GDK_WINDOW_HWND (gdk_window), GWL_STYLE);
 245   SetWindowLongPtrW(GDK_WINDOW_HWND (gdk_window), GWL_STYLE, styles | WS_TABSTOP);
 246
 247   gtk_style_context_set_background (gtk_widget_get_style_context (widget),
 248                                     gdk_window);
 249 }
 250
 251 static void
 252 gtk_win32_embed_widget_show (GtkWidget *widget)
 253 {
 254   gtk_widget_set_visible (widget, TRUE);
 255
 256   gtk_widget_realize (widget);
 257   gtk_container_check_resize (GTK_CONTAINER (widget));
 258   gtk_widget_map (widget);
 259 }
 260
 261 static void
 262 gtk_win32_embed_widget_hide (GtkWidget *widget)
 263 {
 264   gtk_widget_set_visible (widget, FALSE);
 265   gtk_widget_unmap (widget);
 266 }
 267
 268 static void
 269 gtk_win32_embed_widget_map (GtkWidget *widget)
 270 {
 271   GtkBin    *bin = GTK_BIN (widget);
 272   GtkWidget *child;
 273
 274   gtk_widget_set_mapped (widget, TRUE);
 275
 276   child = gtk_bin_get_child (bin);
 277   if (child &&
 278       gtk_widget_get_visible (child) &&
 279       !gtk_widget_get_mapped (child))
 280     gtk_widget_map (child);
 281
 282   gdk_window_show (gtk_widget_get_window (widget));
 283 }
 284
 285 static void
 286 gtk_win32_embed_widget_unmap (GtkWidget *widget)
 287 {
 288   gtk_widget_set_mapped (widget, FALSE);
 289   gdk_window_hide (gtk_widget_get_window (widget));
 290 }
 291
 292 static void
 293 gtk_win32_embed_widget_size_allocate (GtkWidget     *widget,
 294                                       GtkAllocation *allocation)
 295 {
 296   GtkBin    *bin = GTK_BIN (widget);
 297   GtkWidget *child;
 298
 299   gtk_widget_set_allocation (widget, allocation);
 300
 301   if (gtk_widget_get_realized (widget))
 302     gdk_window_move_resize (gtk_widget_get_window (widget),
 303                             allocation->x, allocation->y,
 304                             allocation->width, allocation->height);
 305
 306   child = gtk_bin_get_child (bin);
 307   if (child && gtk_widget_get_visible (child))
 308     {
 309       GtkAllocation child_allocation;
 310
 311       child_allocation.x = gtk_container_get_border_width (GTK_CONTAINER (widget));
 312       child_allocation.y = child_allocation.x;
 313       child_allocation.width =
 314         MAX (1, (gint)allocation->width - child_allocation.x * 2);
 315       child_allocation.height =
 316         MAX (1, (gint)allocation->height - child_allocation.y * 2);
 317
 318       gtk_widget_size_allocate (child, &child_allocation);
 319     }
 320 }
 321
 322 static void
 323 gtk_win32_embed_widget_check_resize (GtkContainer *container)
 324 {
 325   GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
 326 }
 327
 328 static gboolean
 329 gtk_win32_embed_widget_focus (GtkWidget        *widget,
 330                               GtkDirectionType  direction)
 331 {
 332   GtkBin *bin = GTK_BIN (widget);
 333   GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
 334   GtkWindow *window = GTK_WINDOW (widget);
 335   GtkContainer *container = GTK_CONTAINER (widget);
 336   GtkWidget *old_focus_child = gtk_container_get_focus_child (container);
 337   GtkWidget *parent;
 338   GtkWidget *child;
 339
 340   /* We override GtkWindow's behavior, since we don't want wrapping here.
 341    */
 342   if (old_focus_child)
 343     {
 344       if (gtk_widget_child_focus (old_focus_child, direction))
 345         return TRUE;
 346
 347       if (gtk_window_get_focus (window))
 348         {
 349           /* Wrapped off the end, clear the focus setting for the toplevel */
 350           parent = gtk_widget_get_parent (gtk_window_get_focus (window));
 351           while (parent)
 352             {
 353               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 354               parent = gtk_widget_get_parent (GTK_WIDGET (parent));
 355             }
 356
 357           gtk_window_set_focus (GTK_WINDOW (container), NULL);
 358         }
 359     }
 360   else
 361     {
 362       /* Try to focus the first widget in the window */
 363       child = gtk_bin_get_child (bin);
 364       if (child && gtk_widget_child_focus (child, direction))
 365         return TRUE;
 366     }
 367
 368   if (!gtk_container_get_focus_child (GTK_CONTAINER (window)))
 369     {
 370       int backwards = FALSE;
 371
 372       if (direction == GTK_DIR_TAB_BACKWARD ||
 373           direction == GTK_DIR_LEFT)
 374         backwards = TRUE;
 375
 376       PostMessage(GDK_WINDOW_HWND (embed_widget->parent_window),
 377                                    WM_NEXTDLGCTL,
 378                                    backwards, 0);
 379     }
 380
 381   return FALSE;
 382 }
 383
 384 static void
 385 gtk_win32_embed_widget_set_focus (GtkWindow *window,
 386                                   GtkWidget *focus)
 387 {
 388   GTK_WINDOW_CLASS (gtk_win32_embed_widget_parent_class)->set_focus (window, focus);
 389
 390   gdk_window_focus (gtk_widget_get_window (GTK_WIDGET(window)), 0);
 391 }