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gtk2/gtk/gtkwin32embedwidget.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2006. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtksizerequest.h"
#include "gtkwin32embedwidget.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkwindowprivate.h"
static void gtk_win32_embed_widget_realize (GtkWidget *widget);
static void gtk_win32_embed_widget_unrealize (GtkWidget *widget);
static void gtk_win32_embed_widget_show (GtkWidget *widget);
static void gtk_win32_embed_widget_hide (GtkWidget *widget);
static void gtk_win32_embed_widget_map (GtkWidget *widget);
static void gtk_win32_embed_widget_unmap (GtkWidget *widget);
static void gtk_win32_embed_widget_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_win32_embed_widget_set_focus (GtkWindow *window,
GtkWidget *focus);
static gboolean gtk_win32_embed_widget_focus (GtkWidget *widget,
GtkDirectionType direction);
static void gtk_win32_embed_widget_check_resize (GtkContainer *container);
static GtkBinClass *bin_class = NULL;
G_DEFINE_TYPE (GtkWin32EmbedWidget, gtk_win32_embed_widget, GTK_TYPE_WINDOW)
static void
gtk_win32_embed_widget_class_init (GtkWin32EmbedWidgetClass *class)
{
GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
GtkWindowClass *window_class = (GtkWindowClass *)class;
GtkContainerClass *container_class = (GtkContainerClass *)class;
bin_class = g_type_class_peek (GTK_TYPE_BIN);
widget_class->realize = gtk_win32_embed_widget_realize;
widget_class->unrealize = gtk_win32_embed_widget_unrealize;
widget_class->show = gtk_win32_embed_widget_show;
widget_class->hide = gtk_win32_embed_widget_hide;
widget_class->map = gtk_win32_embed_widget_map;
widget_class->unmap = gtk_win32_embed_widget_unmap;
widget_class->size_allocate = gtk_win32_embed_widget_size_allocate;
widget_class->focus = gtk_win32_embed_widget_focus;
container_class->check_resize = gtk_win32_embed_widget_check_resize;
window_class->set_focus = gtk_win32_embed_widget_set_focus;
}
static void
gtk_win32_embed_widget_init (GtkWin32EmbedWidget *embed_widget)
{
GtkWindow *window;
window = GTK_WINDOW (embed_widget);
_gtk_widget_set_is_toplevel (GTK_WIDGET (embed_widget), TRUE);
gtk_container_set_resize_mode (GTK_CONTAINER (embed_widget), GTK_RESIZE_QUEUE);
}
GtkWidget*
_gtk_win32_embed_widget_new (HWND parent)
{
GtkWin32EmbedWidget *embed_widget;
embed_widget = g_object_new (GTK_TYPE_WIN32_EMBED_WIDGET, NULL);
embed_widget->parent_window =
gdk_win32_window_lookup_for_display (gdk_display_get_default (),
parent);
if (!embed_widget->parent_window)
embed_widget->parent_window =
gdk_win32_window_foreign_new_for_display (gdk_display_get_default (),
parent);
return GTK_WIDGET (embed_widget);
}
BOOL
_gtk_win32_embed_widget_dialog_procedure (GtkWin32EmbedWidget *embed_widget,
HWND wnd, UINT message, WPARAM wparam, LPARAM lparam)
{
GtkAllocation allocation;
GtkWidget *widget = GTK_WIDGET (embed_widget);
if (message == WM_SIZE)
{
allocation.width = LOWORD(lparam);
allocation.height = HIWORD(lparam);
gtk_widget_set_allocation (widget, &allocation);
gtk_widget_queue_resize (widget);
}
return 0;
}
static void
gtk_win32_embed_widget_unrealize (GtkWidget *widget)
{
GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
embed_widget->old_window_procedure = NULL;
if (embed_widget->parent_window != NULL)
{
gdk_window_set_user_data (embed_widget->parent_window, NULL);
g_object_unref (embed_widget->parent_window);
embed_widget->parent_window = NULL;
}
GTK_WIDGET_CLASS (gtk_win32_embed_widget_parent_class)->unrealize (widget);
}
static LRESULT CALLBACK
gtk_win32_embed_widget_window_process (HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
GdkWindow *window;
GtkWin32EmbedWidget *embed_widget;
gpointer user_data;
window = gdk_win32_window_lookup_for_display (gdk_display_get_default (), hwnd);
if (window == NULL) {
g_warning ("No such window!");
return 0;
}
gdk_window_get_user_data (window, &user_data);
embed_widget = GTK_WIN32_EMBED_WIDGET (user_data);
if (msg == WM_GETDLGCODE) {
return DLGC_WANTALLKEYS;
}
if (embed_widget && embed_widget->old_window_procedure)
return CallWindowProc(embed_widget->old_window_procedure,
hwnd, msg, wparam, lparam);
else
return 0;
}
static void
gtk_win32_embed_widget_realize (GtkWidget *widget)
{
GtkWindow *window = GTK_WINDOW (widget);
GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
GtkAllocation allocation;
GdkWindow *gdk_window;
GdkWindowAttr attributes;
gint attributes_mask;
LONG_PTR styles;
gtk_widget_get_allocation (widget, &allocation);
/* ensure widget tree is properly size allocated */
if (allocation.x == -1 && allocation.y == -1 &&
allocation.width == 1 && allocation.height == 1)
{
GtkRequisition requisition;
GtkAllocation allocation = { 0, 0, 200, 200 };
gtk_widget_get_preferred_size (widget, &requisition, NULL);
if (requisition.width || requisition.height)
{
/* non-empty window */
allocation.width = requisition.width;
allocation.height = requisition.height;
}
gtk_widget_size_allocate (widget, &allocation);
_gtk_container_queue_resize (GTK_CONTAINER (widget));
g_return_if_fail (!gtk_widget_get_realized (widget));
}
gtk_widget_set_realized (widget, TRUE);
gtk_widget_get_allocation (widget, &allocation);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.title = gtk_window_get_title (window);
_gtk_window_get_wmclass (window, &attributes.wmclass_name, &attributes.wmclass_class);
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
/* this isn't right - we should match our parent's visual/colormap.
* though that will require handling "foreign" colormaps */
attributes.visual = gtk_widget_get_visual (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK |
GDK_KEY_PRESS_MASK |
GDK_KEY_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_STRUCTURE_MASK |
GDK_FOCUS_CHANGE_MASK);
attributes_mask = GDK_WA_VISUAL;
attributes_mask |= (gtk_window_get_title (window) ? GDK_WA_TITLE : 0);
attributes_mask |= (attributes.wmclass_name ? GDK_WA_WMCLASS : 0);
gdk_window = gdk_window_new (embed_widget->parent_window,
&attributes, attributes_mask);
gtk_widget_set_window (widget, gdk_window);
gdk_window_set_user_data (gdk_window, window);
embed_widget->old_window_procedure = (gpointer)
SetWindowLongPtrW(GDK_WINDOW_HWND (gdk_window),
GWLP_WNDPROC,
(LONG_PTR)gtk_win32_embed_widget_window_process);
/* Enable tab to focus the widget */
styles = GetWindowLongPtr(GDK_WINDOW_HWND (gdk_window), GWL_STYLE);
SetWindowLongPtrW(GDK_WINDOW_HWND (gdk_window), GWL_STYLE, styles | WS_TABSTOP);
gtk_style_context_set_background (gtk_widget_get_style_context (widget),
gdk_window);
}
static void
gtk_win32_embed_widget_show (GtkWidget *widget)
{
gtk_widget_set_visible (widget, TRUE);
gtk_widget_realize (widget);
gtk_container_check_resize (GTK_CONTAINER (widget));
gtk_widget_map (widget);
}
static void
gtk_win32_embed_widget_hide (GtkWidget *widget)
{
gtk_widget_set_visible (widget, FALSE);
gtk_widget_unmap (widget);
}
static void
gtk_win32_embed_widget_map (GtkWidget *widget)
{
GtkBin *bin = GTK_BIN (widget);
GtkWidget *child;
gtk_widget_set_mapped (widget, TRUE);
child = gtk_bin_get_child (bin);
if (child &&
gtk_widget_get_visible (child) &&
!gtk_widget_get_mapped (child))
gtk_widget_map (child);
gdk_window_show (gtk_widget_get_window (widget));
}
static void
gtk_win32_embed_widget_unmap (GtkWidget *widget)
{
gtk_widget_set_mapped (widget, FALSE);
gdk_window_hide (gtk_widget_get_window (widget));
}
static void
gtk_win32_embed_widget_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkBin *bin = GTK_BIN (widget);
GtkWidget *child;
gtk_widget_set_allocation (widget, allocation);
if (gtk_widget_get_realized (widget))
gdk_window_move_resize (gtk_widget_get_window (widget),
allocation->x, allocation->y,
allocation->width, allocation->height);
child = gtk_bin_get_child (bin);
if (child && gtk_widget_get_visible (child))
{
GtkAllocation child_allocation;
child_allocation.x = gtk_container_get_border_width (GTK_CONTAINER (widget));
child_allocation.y = child_allocation.x;
child_allocation.width =
MAX (1, (gint)allocation->width - child_allocation.x * 2);
child_allocation.height =
MAX (1, (gint)allocation->height - child_allocation.y * 2);
gtk_widget_size_allocate (child, &child_allocation);
}
}
static void
gtk_win32_embed_widget_check_resize (GtkContainer *container)
{
GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
}
static gboolean
gtk_win32_embed_widget_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkBin *bin = GTK_BIN (widget);
GtkWin32EmbedWidget *embed_widget = GTK_WIN32_EMBED_WIDGET (widget);
GtkWindow *window = GTK_WINDOW (widget);
GtkContainer *container = GTK_CONTAINER (widget);
GtkWidget *old_focus_child = gtk_container_get_focus_child (container);
GtkWidget *parent;
GtkWidget *child;
/* We override GtkWindow's behavior, since we don't want wrapping here.
*/
if (old_focus_child)
{
if (gtk_widget_child_focus (old_focus_child, direction))
return TRUE;
if (gtk_window_get_focus (window))
{
/* Wrapped off the end, clear the focus setting for the toplevel */
parent = gtk_widget_get_parent (gtk_window_get_focus (window));
while (parent)
{
gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
parent = gtk_widget_get_parent (GTK_WIDGET (parent));
}
gtk_window_set_focus (GTK_WINDOW (container), NULL);
}
}
else
{
/* Try to focus the first widget in the window */
child = gtk_bin_get_child (bin);
if (child && gtk_widget_child_focus (child, direction))
return TRUE;
}
if (!gtk_container_get_focus_child (GTK_CONTAINER (window)))
{
int backwards = FALSE;
if (direction == GTK_DIR_TAB_BACKWARD ||
direction == GTK_DIR_LEFT)
backwards = TRUE;
PostMessage(GDK_WINDOW_HWND (embed_widget->parent_window),
WM_NEXTDLGCTL,
backwards, 0);
}
return FALSE;
}
static void
gtk_win32_embed_widget_set_focus (GtkWindow *window,
GtkWidget *focus)
{
GTK_WINDOW_CLASS (gtk_win32_embed_widget_parent_class)->set_focus (window, focus);
gdk_window_focus (gtk_widget_get_window (GTK_WIDGET(window)), 0);
}
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