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   GTK_WIDGET_CLASS (gtk_win32_embed_widget_parent_class)->unrealize (widget);
 143 }
 144
 145 static LRESULT CALLBACK
 146 gtk_win32_embed_widget_window_process (HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
 147 {
 148   GdkWindow *window;
 149   GtkWin32EmbedWidget *embed_widget;
 150   gpointer user_data;
 151
 152   window = gdk_window_lookup ((GdkNativeWindow)hwnd);
 153   if (window == NULL) {
 154     g_warning ("No such window!");
 155     return 0;
 156   }
 157   gdk_window_get_user_data (window, &user_data);
 158   embed_widget = GTK_WIN32_EMBED_WIDGET (user_data);
 159
 160   if (msg == WM_GETDLGCODE) {
 161     return DLGC_WANTALLKEYS;
 162   }
 163
 164   if (embed_widget && embed_widget->old_window_procedure)
 165     return CallWindowProc(embed_widget->old_window_procedure,
 166                           hwnd, msg, wparam, lparam);
 167   else
 168     return 0;
 169 }
 170
 171 static void
 172 gtk_win32_embed_widget_realize (GtkWidget *widget)
 173 {
 174   GtkWindow *window = GTK_WINDOW (widget);
 175   GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
 176   GdkWindowAttr attributes;
 177   gint attributes_mask;
 178   LONG_PTR styles;
 179
 180   /* ensure widget tree is properly size allocated */
 181   if (widget->allocation.x == -1 &&
 182       widget->allocation.y == -1 &&
 183       widget->allocation.width == 1 &&
 184       widget->allocation.height == 1)
 185     {
 186       GtkRequisition requisition;
 187       GtkAllocation allocation = { 0, 0, 200, 200 };
 188
 189       gtk_widget_size_request (widget, &requisition);
 190       if (requisition.width || requisition.height)
 191         {
 192           /* non-empty window */
 193           allocation.width = requisition.width;
 194           allocation.height = requisition.height;
 195         }
 196       gtk_widget_size_allocate (widget, &allocation);
 197
 198       _gtk_container_queue_resize (GTK_CONTAINER (widget));
 199
 200       g_return_if_fail (!GTK_WIDGET_REALIZED (widget));
 201     }
 202
 203   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 204
 205   attributes.window_type = GDK_WINDOW_CHILD;
 206   attributes.title = window->title;
 207   attributes.wmclass_name = window->wmclass_name;
 208   attributes.wmclass_class = window->wmclass_class;
 209   attributes.width = widget->allocation.width;
 210   attributes.height = widget->allocation.height;
 211   attributes.wclass = GDK_INPUT_OUTPUT;
 212
 213   /* this isn't right - we should match our parent's visual/colormap.
 214    * though that will require handling "foreign" colormaps */
 215   attributes.visual = gtk_widget_get_visual (widget);
 216   attributes.colormap = gtk_widget_get_colormap (widget);
 217   attributes.event_mask = gtk_widget_get_events (widget);
 218   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 219                             GDK_KEY_PRESS_MASK |
 220                             GDK_KEY_RELEASE_MASK |
 221                             GDK_ENTER_NOTIFY_MASK |
 222                             GDK_LEAVE_NOTIFY_MASK |
 223                             GDK_STRUCTURE_MASK |
 224                             GDK_FOCUS_CHANGE_MASK);
 225
 226   attributes_mask = GDK_WA_VISUAL | GDK_WA_COLORMAP;
 227   attributes_mask |= (window->title ? GDK_WA_TITLE : 0);
 228   attributes_mask |= (window->wmclass_name ? GDK_WA_WMCLASS : 0);
 229
 230   widget->window = gdk_window_new (embed_widget->parent_window,
 231                                    &attributes, attributes_mask);
 232
 233   gdk_window_set_user_data (widget->window, window);
 234
 235   embed_widget->old_window_procedure = (gpointer)
 236     SetWindowLongPtrW(GDK_WINDOW_HWND (widget->window),
 237                       GWLP_WNDPROC,
 238                       (LONG_PTR)gtk_win32_embed_widget_window_process);
 239
 240   /* Enable tab to focus the widget */
 241   styles = GetWindowLongPtr(GDK_WINDOW_HWND (widget->window), GWL_STYLE);
 242   SetWindowLongPtrW(GDK_WINDOW_HWND (widget->window), GWL_STYLE, styles | WS_TABSTOP);
 243
 244   widget->style = gtk_style_attach (widget->style, widget->window);
 245   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 246 }
 247
 248 static void
 249 gtk_win32_embed_widget_show (GtkWidget *widget)
 250 {
 251   GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
 252
 253   gtk_widget_realize (widget);
 254   gtk_container_check_resize (GTK_CONTAINER (widget));
 255   gtk_widget_map (widget);
 256 }
 257
 258 static void
 259 gtk_win32_embed_widget_hide (GtkWidget *widget)
 260 {
 261   GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
 262   gtk_widget_unmap (widget);
 263 }
 264
 265 static void
 266 gtk_win32_embed_widget_map (GtkWidget *widget)
 267 {
 268   GtkBin *bin = GTK_BIN (widget);
 269
 270   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 271
 272   if (bin->child &&
 273       gtk_widget_get_visible (bin->child) &&
 274       !GTK_WIDGET_MAPPED (bin->child))
 275     gtk_widget_map (bin->child);
 276
 277   gdk_window_show (widget->window);
 278 }
 279
 280 static void
 281 gtk_win32_embed_widget_unmap (GtkWidget *widget)
 282 {
 283   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 284   gdk_window_hide (widget->window);
 285 }
 286
 287 static void
 288 gtk_win32_embed_widget_size_allocate (GtkWidget     *widget,
 289                                       GtkAllocation *allocation)
 290 {
 291   GtkBin *bin = GTK_BIN (widget);
 292
 293   widget->allocation = *allocation;
 294
 295   if (GTK_WIDGET_REALIZED (widget))
 296     gdk_window_move_resize (widget->window,
 297                             allocation->x, allocation->y,
 298                             allocation->width, allocation->height);
 299
 300   if (bin->child && gtk_widget_get_visible (bin->child))
 301     {
 302       GtkAllocation child_allocation;
 303
 304       child_allocation.x = child_allocation.y = GTK_CONTAINER (widget)->border_width;
 305       child_allocation.width =
 306         MAX (1, (gint)allocation->width - child_allocation.x * 2);
 307       child_allocation.height =
 308         MAX (1, (gint)allocation->height - child_allocation.y * 2);
 309
 310       gtk_widget_size_allocate (bin->child, &child_allocation);
 311     }
 312 }
 313
 314 static void
 315 gtk_win32_embed_widget_check_resize (GtkContainer *container)
 316 {
 317   GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
 318 }
 319
 320 static gboolean
 321 gtk_win32_embed_widget_focus (GtkWidget        *widget,
 322                               GtkDirectionType  direction)
 323 {
 324   GtkBin *bin = GTK_BIN (widget);
 325   GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
 326   GtkWindow *window = GTK_WINDOW (widget);
 327   GtkContainer *container = GTK_CONTAINER (widget);
 328   GtkWidget *old_focus_child = container->focus_child;
 329   GtkWidget *parent;
 330
 331   /* We override GtkWindow's behavior, since we don't want wrapping here.
 332    */
 333   if (old_focus_child)
 334     {
 335       if (gtk_widget_child_focus (old_focus_child, direction))
 336         return TRUE;
 337
 338       if (window->focus_widget)
 339         {
 340           /* Wrapped off the end, clear the focus setting for the toplevel */
 341           parent = window->focus_widget->parent;
 342           while (parent)
 343             {
 344               gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
 345               parent = GTK_WIDGET (parent)->parent;
 346             }
 347
 348           gtk_window_set_focus (GTK_WINDOW (container), NULL);
 349         }
 350     }
 351   else
 352     {
 353       /* Try to focus the first widget in the window */
 354       if (bin->child && gtk_widget_child_focus (bin->child, direction))
 355         return TRUE;
 356     }
 357
 358   if (!GTK_CONTAINER (window)->focus_child)
 359     {
 360       int backwards = FALSE;
 361
 362       if (direction == GTK_DIR_TAB_BACKWARD ||
 363           direction == GTK_DIR_LEFT)
 364         backwards = TRUE;
 365
 366       PostMessage(GDK_WINDOW_HWND (embed_widget->parent_window),
 367                                    WM_NEXTDLGCTL,
 368                                    backwards, 0);
 369     }
 370
 371   return FALSE;
 372 }
 373
 374 static void
 375 gtk_win32_embed_widget_set_focus (GtkWindow *window,
 376                                   GtkWidget *focus)
 377 {
 378   GTK_WINDOW_CLASS (gtk_win32_embed_widget_parent_class)->set_focus (window, focus);
 379
 380   gdk_window_focus (GTK_WIDGET(window)->window, 0);
 381 }
 382
 383 #define __GTK_WIN32_EMBED_WIDGET_C__
 384 #include "gtkaliasdef.c"