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Allow windows to be dragged by clicking on empty areas

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Allow windows to be dragged by clicking on empty areas in menubars
and toolbars. This is under theme control, via the GtkWidget::window-dragging
style property. The idea is that it makes sense to turn this on if a
theme makes the window frame and the menubar/toolbar appear visually
contiguous.

The main patch was written by Cody Russell, with a contribution by
Ayan George. See bug 611313.
This commit is contained in:
Matthias Clasen
2010-07-16 01:15:47 -04:00
parent 89d0955431
commit 7491e9e97a
4 changed files with 231 additions and 44 deletions
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31
gtk/gtkmenushell.c
View File

@ -596,14 +596,19 @@ gtk_menu_shell_button_press (GtkWidget *widget,
if (!menu_shell->active || !menu_shell->button)
{
_gtk_menu_shell_activate (menu_shell);
gboolean initially_active = menu_shell->active;
menu_shell->button = event->button;
if (menu_item && _gtk_menu_item_is_selectable (menu_item) &&
if (menu_item)
{
if (_gtk_menu_item_is_selectable (menu_item) &&
menu_item->parent == widget &&
menu_item != menu_shell->active_menu_item)
{
_gtk_menu_shell_activate (menu_shell);
menu_shell->button = event->button;
if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement == GTK_TOP_BOTTOM)
{
menu_shell->activate_time = event->time;
@ -611,6 +616,28 @@ gtk_menu_shell_button_press (GtkWidget *widget,
}
}
}
else
{
if (!initially_active)
{
gboolean window_drag = FALSE;
gtk_widget_style_get (widget,
"window-dragging", &window_drag,
NULL);
if (window_drag)
{
gtk_menu_shell_deactivate (menu_shell);
gtk_window_begin_move_drag (GTK_WINDOW (gtk_widget_get_toplevel (widget)),
event->button,
event->x_root,
event->y_root,
event->time);
}
}
}
}
else
{
widget = gtk_get_event_widget ((GdkEvent*) event);

131
gtk/gtkseparatortoolitem.c
View File

@ -44,11 +44,11 @@
* Use gtk_separator_tool_item_new() to create a new #GtkSeparatorToolItem.
*/
#define MENU_ID "gtk-separator-tool-item-menu-id"
struct _GtkSeparatorToolItemPrivate
{
GdkWindow *event_window;
guint draw : 1;
};
@ -68,11 +68,19 @@ static void gtk_separator_tool_item_get_property (GObject
GParamSpec *pspec);
static void gtk_separator_tool_item_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_separator_tool_item_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean gtk_separator_tool_item_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_separator_tool_item_add (GtkContainer *container,
GtkWidget *child);
static gint get_space_size (GtkToolItem *tool_item);
static void gtk_separator_tool_item_realize (GtkWidget *widget);
static void gtk_separator_tool_item_unrealize (GtkWidget *widget);
static void gtk_separator_tool_item_map (GtkWidget *widget);
static void gtk_separator_tool_item_unmap (GtkWidget *widget);
static gboolean gtk_separator_tool_item_button_event (GtkWidget *widget,
GdkEventButton *event);
G_DEFINE_TYPE (GtkSeparatorToolItem, gtk_separator_tool_item, GTK_TYPE_TOOL_ITEM)
@ -109,7 +117,15 @@ gtk_separator_tool_item_class_init (GtkSeparatorToolItemClass *class)
object_class->set_property = gtk_separator_tool_item_set_property;
object_class->get_property = gtk_separator_tool_item_get_property;
widget_class->size_request = gtk_separator_tool_item_size_request;
widget_class->size_allocate = gtk_separator_tool_item_size_allocate;
widget_class->expose_event = gtk_separator_tool_item_expose;
widget_class->realize = gtk_separator_tool_item_realize;
widget_class->unrealize = gtk_separator_tool_item_unrealize;
widget_class->map = gtk_separator_tool_item_map;
widget_class->unmap = gtk_separator_tool_item_unmap;
widget_class->button_press_event = gtk_separator_tool_item_button_event;
widget_class->button_release_event = gtk_separator_tool_item_button_event;
toolitem_class->create_menu_proxy = gtk_separator_tool_item_create_menu_proxy;
container_class->add = gtk_separator_tool_item_add;
@ -122,6 +138,7 @@ gtk_separator_tool_item_class_init (GtkSeparatorToolItemClass *class)
TRUE,
GTK_PARAM_READWRITE));
g_type_class_add_private (object_class, sizeof (GtkSeparatorToolItemPrivate));
}
@ -132,6 +149,8 @@ gtk_separator_tool_item_init (GtkSeparatorToolItem *separator_item)
GTK_TYPE_SEPARATOR_TOOL_ITEM,
GtkSeparatorToolItemPrivate);
separator_item->priv->draw = TRUE;
gtk_widget_set_has_window (GTK_WIDGET (separator_item), FALSE);
}
static void
@ -210,6 +229,116 @@ gtk_separator_tool_item_size_request (GtkWidget *widget,
}
}
static void
gtk_separator_tool_item_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkSeparatorToolItem *separator = GTK_SEPARATOR_TOOL_ITEM (widget);
GtkSeparatorToolItemPrivate *priv = separator->priv;
widget->allocation = *allocation;
if (gtk_widget_get_realized (widget))
gdk_window_move_resize (priv->event_window,
widget->allocation.x,
widget->allocation.y,
widget->allocation.width,
widget->allocation.height);
}
static void
gtk_separator_tool_item_realize (GtkWidget *widget)
{
GtkSeparatorToolItem *separator = GTK_SEPARATOR_TOOL_ITEM (widget);
GtkSeparatorToolItemPrivate *priv = separator->priv;
GdkWindowAttr attributes;
gint attributes_mask;
gtk_widget_set_realized (widget, TRUE);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_ONLY;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget) |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y;
widget->window = gtk_widget_get_parent_window (widget);
g_object_ref (widget->window);
priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (priv->event_window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
}
static void
gtk_separator_tool_item_unrealize (GtkWidget *widget)
{
GtkSeparatorToolItem *separator = GTK_SEPARATOR_TOOL_ITEM (widget);
GtkSeparatorToolItemPrivate *priv = separator->priv;
if (priv->event_window)
{
gdk_window_set_user_data (priv->event_window, NULL);
gdk_window_destroy (priv->event_window);
priv->event_window = NULL;
}
GTK_WIDGET_CLASS (gtk_separator_tool_item_parent_class)->unrealize (widget);
}
static void
gtk_separator_tool_item_map (GtkWidget *widget)
{
GtkSeparatorToolItem *separator = GTK_SEPARATOR_TOOL_ITEM (widget);
GtkSeparatorToolItemPrivate *priv = separator->priv;
GTK_WIDGET_CLASS (gtk_separator_tool_item_parent_class)->map (widget);
if (priv->event_window)
gdk_window_show (priv->event_window);
}
static void
gtk_separator_tool_item_unmap (GtkWidget *widget)
{
GtkSeparatorToolItem *separator = GTK_SEPARATOR_TOOL_ITEM (widget);
GtkSeparatorToolItemPrivate *priv = separator->priv;
if (priv->event_window)
gdk_window_hide (priv->event_window);
GTK_WIDGET_CLASS (gtk_separator_tool_item_parent_class)->unmap (widget);
}
static gboolean
gtk_separator_tool_item_button_event (GtkWidget *widget,
GdkEventButton *event)
{
GtkSeparatorToolItem *separator = GTK_SEPARATOR_TOOL_ITEM (widget);
GtkSeparatorToolItemPrivate *priv = separator->priv;
/* We want window dragging to work on empty toolbar areas,
* so we only eat button events on visible separators
*/
return priv->draw;
}
#define DEFAULT_SPACE_SIZE 12
#define DEFAULT_SPACE_STYLE GTK_TOOLBAR_SPACE_LINE
#define SPACE_LINE_DIVISION 10.0
#define SPACE_LINE_START 2.0
#define SPACE_LINE_END 8.0
static gboolean
gtk_separator_tool_item_expose (GtkWidget *widget,
GdkEventExpose *event)

24
gtk/gtktoolbar.c
View File

@ -2630,6 +2630,8 @@ static gboolean
gtk_toolbar_button_press (GtkWidget *toolbar,
GdkEventButton *event)
{
GtkWidget *window;
if (event->button == 3)
{
gboolean return_value;
@ -2641,6 +2643,28 @@ gtk_toolbar_button_press (GtkWidget *toolbar,
return return_value;
}
window = gtk_widget_get_toplevel (toolbar);
if (window)
{
gboolean window_drag = FALSE;
gtk_widget_style_get (toolbar,
"window-dragging", &window_drag,
NULL);
if (window_drag)
{
gtk_window_begin_move_drag (GTK_WINDOW (window),
event->button,
event->x_root,
event->y_root,
event->time);
return TRUE;
}
}
return FALSE;
}

7
gtk/gtkwidget.c
View File

@ -2491,6 +2491,13 @@ gtk_widget_class_init (GtkWidgetClass *klass)
0.0, 1.0, 0.04,
GTK_PARAM_READABLE));
gtk_widget_class_install_style_property (klass,
g_param_spec_boolean ("window-dragging",
P_("Window dragging"),
P_("Whether windows can be dragged by clicking on empty areas"),
FALSE,
GTK_PARAM_READWRITE));
/**
* GtkWidget:draw-border:
*