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 "gtkwin32embedwidget.h"
  31 #include "gtkintl.h"
  32 #include "gtkprivate.h"
  33
  34 #include "gtkalias.h"
  35
  36 static void            gtk_win32_embed_widget_realize               (GtkWidget        *widget);
  37 static void            gtk_win32_embed_widget_unrealize             (GtkWidget        *widget);
  38 static void            gtk_win32_embed_widget_show                  (GtkWidget        *widget);
  39 static void            gtk_win32_embed_widget_hide                  (GtkWidget        *widget);
  40 static void            gtk_win32_embed_widget_map                   (GtkWidget        *widget);
  41 static void            gtk_win32_embed_widget_unmap                 (GtkWidget        *widget);
  42 static void            gtk_win32_embed_widget_size_allocate         (GtkWidget        *widget,
  43                                                                      GtkAllocation    *allocation);
  44 static void            gtk_win32_embed_widget_set_focus             (GtkWindow        *window,
  45                                                                      GtkWidget        *focus);
  46 static gboolean        gtk_win32_embed_widget_focus                 (GtkWidget        *widget,
  47                                                                      GtkDirectionType  direction);
  48 static void            gtk_win32_embed_widget_check_resize          (GtkContainer     *container);
  49
  50 static GtkBinClass *bin_class = NULL;
  51
  52 G_DEFINE_TYPE (GtkWin32EmbedWidget, gtk_win32_embed_widget, GTK_TYPE_WINDOW)
  53
  54 static void
  55 gtk_win32_embed_widget_class_init (GtkWin32EmbedWidgetClass *class)
  56 {
  57   GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
  58   GtkWindowClass *window_class = (GtkWindowClass *)class;
  59   GtkContainerClass *container_class = (GtkContainerClass *)class;
  60
  61   bin_class = g_type_class_peek (GTK_TYPE_BIN);
  62
  63   widget_class->realize = gtk_win32_embed_widget_realize;
  64   widget_class->unrealize = gtk_win32_embed_widget_unrealize;
  65
  66   widget_class->show = gtk_win32_embed_widget_show;
  67   widget_class->hide = gtk_win32_embed_widget_hide;
  68   widget_class->map = gtk_win32_embed_widget_map;
  69   widget_class->unmap = gtk_win32_embed_widget_unmap;
  70   widget_class->size_allocate = gtk_win32_embed_widget_size_allocate;
  71
  72   widget_class->focus = gtk_win32_embed_widget_focus;
  73
  74   container_class->check_resize = gtk_win32_embed_widget_check_resize;
  75
  76   window_class->set_focus = gtk_win32_embed_widget_set_focus;
  77 }
  78
  79 static void
  80 gtk_win32_embed_widget_init (GtkWin32EmbedWidget *embed_widget)
  81 {
  82   GtkWindow *window;
  83
  84   window = GTK_WINDOW (embed_widget);
  85
  86   window->type = GTK_WINDOW_TOPLEVEL;
  87
  88   GTK_WIDGET_SET_FLAGS (embed_widget, GTK_TOPLEVEL);
  89   gtk_container_set_resize_mode (GTK_CONTAINER (embed_widget), GTK_RESIZE_QUEUE);
  90 }
  91
  92 GtkWidget*
  93 _gtk_win32_embed_widget_new (GdkNativeWindow parent_id)
  94 {
  95   GtkWin32EmbedWidget *embed_widget;
  96
  97   embed_widget = g_object_new (GTK_TYPE_WIN32_EMBED_WIDGET, NULL);
  98
  99   embed_widget->parent_window =
 100     gdk_window_lookup_for_display (gdk_display_get_default (),
 101                                    parent_id);
 102
 103   if (!embed_widget->parent_window)
 104     embed_widget->parent_window =
 105       gdk_window_foreign_new_for_display (gdk_display_get_default (),
 106                                           parent_id);
 107
 108   return GTK_WIDGET (embed_widget);
 109 }
 110
 111 BOOL
 112 _gtk_win32_embed_widget_dialog_procedure (GtkWin32EmbedWidget *embed_widget,
 113                                           HWND wnd, UINT message, WPARAM wparam, LPARAM lparam)
 114 {
 115   GtkWidget *widget = GTK_WIDGET (embed_widget);
 116
 117  if (message == WM_SIZE)
 118    {
 119      widget->allocation.width = LOWORD(lparam);
 120      widget->allocation.height = HIWORD(lparam);
 121
 122      gtk_widget_queue_resize (widget);
 123    }
 124
 125  return 0;
 126 }
 127
 128 static void
 129 gtk_win32_embed_widget_unrealize (GtkWidget *widget)
 130 {
 131   GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
 132
 133   embed_widget->old_window_procedure = NULL;
 134
 135   if (embed_widget->parent_window != NULL)
 136     {
 137       gdk_window_set_user_data (embed_widget->parent_window, NULL);
 138       g_object_unref (embed_widget->parent_window);
 139       embed_widget->parent_window = NULL;
 140     }
 141
 142   if (GTK_WIDGET_CLASS (gtk_win32_embed_widget_parent_class)->unrealize)
 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_window_lookup ((GdkNativeWindow)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   GdkWindowAttr attributes;
 178   gint attributes_mask;
 179   LONG_PTR styles;
 180
 181   /* ensure widget tree is properly size allocated */
 182   if (widget->allocation.x == -1 &&
 183       widget->allocation.y == -1 &&
 184       widget->allocation.width == 1 &&
 185       widget->allocation.height == 1)
 186     {
 187       GtkRequisition requisition;
 188       GtkAllocation allocation = { 0, 0, 200, 200 };
 189
 190       gtk_widget_size_request (widget, &requisition);
 191       if (requisition.width || requisition.height)
 192         {
 193           /* non-empty window */
 194           allocation.width = requisition.width;
 195           allocation.height = requisition.height;
 196         }
 197       gtk_widget_size_allocate (widget, &allocation);
 198
 199       _gtk_container_queue_resize (GTK_CONTAINER (widget));
 200
 201       g_return_if_fail (!GTK_WIDGET_REALIZED (widget));
 202     }
 203
 204   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 205
 206   attributes.window_type = GDK_WINDOW_CHILD;
 207   attributes.title = window->title;
 208   attributes.wmclass_name = window->wmclass_name;
 209   attributes.wmclass_class = window->wmclass_class;
 210   attributes.width = widget->allocation.width;
 211   attributes.height = widget->allocation.height;
 212   attributes.wclass = GDK_INPUT_OUTPUT;
 213
 214   /* this isn't right - we should match our parent's visual/colormap.
 215    * though that will require handling "foreign" colormaps */
 216   attributes.visual = gtk_widget_get_visual (widget);
 217   attributes.colormap = gtk_widget_get_colormap (widget);
 218   attributes.event_mask = gtk_widget_get_events (widget);
 219   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 220                             GDK_KEY_PRESS_MASK |
 221                             GDK_KEY_RELEASE_MASK |
 222                             GDK_ENTER_NOTIFY_MASK |
 223                             GDK_LEAVE_NOTIFY_MASK |
 224                             GDK_STRUCTURE_MASK |
 225                             GDK_FOCUS_CHANGE_MASK);
 226
 227   attributes_mask = GDK_WA_VISUAL | GDK_WA_COLORMAP;
 228   attributes_mask |= (window->title ? GDK_WA_TITLE : 0);
 229   attributes_mask |= (window->wmclass_name ? GDK_WA_WMCLASS : 0);
 230
 231   widget->window = gdk_window_new (embed_widget->parent_window,
 232                                    &attributes, attributes_mask);
 233
 234   gdk_window_set_user_data (widget->window, window);
 235
 236   embed_widget->old_window_procedure = (gpointer)
 237     SetWindowLongPtrW(GDK_WINDOW_HWND (widget->window),
 238                       GWLP_WNDPROC,
 239                       (LONG_PTR)gtk_win32_embed_widget_window_process);
 240
 241   /* Enable tab to focus the widget */
 242   styles = GetWindowLongPtr(GDK_WINDOW_HWND (widget->window), GWL_STYLE);
 243   SetWindowLongPtrW(GDK_WINDOW_HWND (widget->window), GWL_STYLE, styles | WS_TABSTOP);
 244
 245   widget->style = gtk_style_attach (widget->style, widget->window);
 246   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 247 }
 248
 249 static void
 250 gtk_win32_embed_widget_show (GtkWidget *widget)
 251 {
 252   GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
 253
 254   gtk_widget_realize (widget);
 255   gtk_container_check_resize (GTK_CONTAINER (widget));
 256   gtk_widget_map (widget);
 257 }
 258
 259 static void
 260 gtk_win32_embed_widget_hide (GtkWidget *widget)
 261 {
 262   GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
 263   gtk_widget_unmap (widget);
 264 }
 265
 266 static void
 267 gtk_win32_embed_widget_map (GtkWidget *widget)
 268 {
 269   GtkBin *bin = GTK_BIN (widget);
 270
 271   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 272
 273   if (bin->child &&
 274       GTK_WIDGET_VISIBLE (bin->child) &&
 275       !GTK_WIDGET_MAPPED (bin->child))
 276     gtk_widget_map (bin->child);
 277
 278   gdk_window_show (widget->window);
 279 }
 280
 281 static void
 282 gtk_win32_embed_widget_unmap (GtkWidget *widget)
 283 {
 284   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 285   gdk_window_hide (widget->window);
 286 }
 287
 288 static void
 289 gtk_win32_embed_widget_size_allocate (GtkWidget     *widget,
 290                                       GtkAllocation *allocation)
 291 {
 292   GtkBin *bin = GTK_BIN (widget);
 293
 294   widget->allocation = *allocation;
 295
 296   if (GTK_WIDGET_REALIZED (widget))
 297     gdk_window_move_resize (widget->window,
 298                             allocation->x, allocation->y,
 299                             allocation->width, allocation->height);
 300
 301   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 302     {
 303       GtkAllocation child_allocation;
 304
 305       child_allocation.x = child_allocation.y = GTK_CONTAINER (widget)->border_width;
 306       child_allocation.width =
 307         MAX (1, (gint)allocation->width - child_allocation.x * 2);
 308       child_allocation.height =
 309         MAX (1, (gint)allocation->height - child_allocation.y * 2);
 310
 311       gtk_widget_size_allocate (bin->child, &child_allocation);
 312     }
 313 }
 314
 315 static void
 316 gtk_win32_embed_widget_check_resize (GtkContainer *container)
 317 {
 318   GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
 319 }
 320
 321 static gboolean
 322 gtk_win32_embed_widget_focus (GtkWidget        *widget,
 323                               GtkDirectionType  direction)
 324 {
 325   GtkBin *bin = GTK_BIN (widget);
 326   GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
 327   GtkWindow *window = GTK_WINDOW (widget);
 328   GtkContainer *container = GTK_CONTAINER (widget);
 329   GtkWidget *old_focus_child = container->focus_child;
 330   GtkWidget *parent;
 331
 332   /* We override GtkWindow's behavior, since we don't want wrapping here.
 333    */
 334   if (old_focus_child)
 335     {
 336       if (gtk_widget_child_focus (old_focus_child, direction))
 337         return TRUE;
 338
 339       if (window->focus_widget)
 340         {
 341           /* Wrapped off the end, clear the focus setting for the toplevel */
 342           parent = window->focus_widget->parent;
 343           while (parent)
 344             {
 345               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 346               parent = GTK_WIDGET (parent)->parent;
 347             }
 348
 349           gtk_window_set_focus (GTK_WINDOW (container), NULL);
 350         }
 351     }
 352   else
 353     {
 354       /* Try to focus the first widget in the window */
 355       if (bin->child && gtk_widget_child_focus (bin->child, direction))
 356         return TRUE;
 357     }
 358
 359   if (!GTK_CONTAINER (window)->focus_child)
 360     {
 361       int backwards = FALSE;
 362
 363       if (direction == GTK_DIR_TAB_BACKWARD ||
 364           direction == GTK_DIR_LEFT)
 365         backwards = TRUE;
 366
 367       PostMessage(GDK_WINDOW_HWND (embed_widget->parent_window),
 368                                    WM_NEXTDLGCTL,
 369                                    backwards, 0);
 370     }
 371
 372   return FALSE;
 373 }
 374
 375 static void
 376 gtk_win32_embed_widget_set_focus (GtkWindow *window,
 377                                   GtkWidget *focus)
 378 {
 379   GTK_WINDOW_CLASS (gtk_win32_embed_widget_parent_class)->set_focus (window, focus);
 380
 381   gdk_window_focus (GTK_WIDGET(window)->window, 0);
 382 }
 383
 384 #define __GTK_WIN32_EMBED_WIDGET_C__
 385 #include "gtkaliasdef.c"