input only event boxes
- From: Alexander Larsson <alexl redhat com>
- To: gtk dev list <gtk-devel-list gnome org>
- Subject: input only event boxes
- Date: 20 Aug 2003 13:47:20 +0200
I finally made some time to implement the input-only window support for
GtkEventBox. This is really useful when you're trying to write code that
follows themes well.
Comments?
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Alexander Larsson Red Hat, Inc
alexl redhat com alla lysator liu se
He's a jaded shark-wrestling romance novelist who hides his scarred face
behind a mask. She's a pregnant cigar-chomping doctor who hides her beauty
behind a pair of thick-framed spectacles. They fight crime!
Index: ChangeLog
===================================================================
RCS file: /cvs/gnome/gtk+/ChangeLog,v
retrieving revision 1.4407
diff -u -p -r1.4407 ChangeLog
--- ChangeLog 19 Aug 2003 21:17:14 -0000 1.4407
+++ ChangeLog 20 Aug 2003 11:40:47 -0000
@@ -1,3 +1,11 @@
+2003-08-20 Alexander Larsson <alexl redhat com>
+
+ * gtk/gtkeventbox.[hc]:
+ Implement gtk_event_box_get/set_input_only()
+
+ * tests/testgtk.c:
+ Tests for the new input only event boxes
+
Mon Aug 18 17:19:12 2003 Owen Taylor <otaylor redhat com>
* modules/input/gtkimcontextxim.[ch]: Substantially
Index: gtk/gtkeventbox.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkeventbox.c,v
retrieving revision 1.26
diff -u -p -r1.26 gtkeventbox.c
--- gtk/gtkeventbox.c 10 Oct 2002 22:00:09 -0000 1.26
+++ gtk/gtkeventbox.c 20 Aug 2003 11:40:48 -0000
@@ -26,10 +26,20 @@
#include "gtkeventbox.h"
+typedef struct
+{
+ gboolean input_only;
+ GdkWindow *event_window;
+} GtkEventBoxPrivate;
+
+#define GTK_EVENT_BOX_GET_PRIVATE(obj) G_TYPE_INSTANCE_GET_PRIVATE((obj), GTK_TYPE_EVENT_BOX, GtkEventBoxPrivate)
static void gtk_event_box_class_init (GtkEventBoxClass *klass);
static void gtk_event_box_init (GtkEventBox *event_box);
static void gtk_event_box_realize (GtkWidget *widget);
+static void gtk_event_box_unrealize (GtkWidget *widget);
+static void gtk_event_box_map (GtkWidget *widget);
+static void gtk_event_box_unmap (GtkWidget *widget);
static void gtk_event_box_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_event_box_size_allocate (GtkWidget *widget,
@@ -79,15 +89,25 @@ gtk_event_box_class_init (GtkEventBoxCla
widget_class = (GtkWidgetClass*) class;
widget_class->realize = gtk_event_box_realize;
+ widget_class->unrealize = gtk_event_box_unrealize;
+ widget_class->map = gtk_event_box_map;
+ widget_class->unmap = gtk_event_box_unmap;
widget_class->size_request = gtk_event_box_size_request;
widget_class->size_allocate = gtk_event_box_size_allocate;
widget_class->expose_event = gtk_event_box_expose;
+
+ g_type_class_add_private (class, sizeof (GtkEventBoxPrivate));
}
static void
gtk_event_box_init (GtkEventBox *event_box)
{
+ GtkEventBoxPrivate *priv;
+
GTK_WIDGET_UNSET_FLAGS (event_box, GTK_NO_WINDOW);
+
+ priv = GTK_EVENT_BOX_GET_PRIVATE (event_box);
+ priv->input_only = FALSE;
}
GtkWidget*
@@ -96,12 +116,108 @@ gtk_event_box_new (void)
return g_object_new (GTK_TYPE_EVENT_BOX, NULL);
}
+/**
+ * gtk_event_box_get_input_only:
+ * @event_box: a #GtkEventBox
+ *
+ * Return whether the event box is using input only windows
+ * or not.
+ *
+ * Return value: TRUE if the event box uses an input only
+ * window, and FALSE if it uses a normal window.
+ *
+ * Since: 2.4
+ **/
+gboolean
+gtk_event_box_get_input_only (GtkEventBox *event_box)
+{
+ GtkEventBoxPrivate *priv;
+
+ g_return_if_fail (event_box != NULL);
+ g_return_if_fail (GTK_IS_EVENT_BOX (event_box));
+
+ priv = GTK_EVENT_BOX_GET_PRIVATE (event_box);
+
+ return priv->input_only;
+}
+
+/**
+ * gtk_event_box_set_input_only:
+ * @event_box: a #GtkEventBox
+ * @input_only: boolean value
+ *
+ * Set whether the event box uses a normal (GDK_INPUT_OUTPUT)
+ * child window, or an invisible (GDK_INPUT_ONLY) window.
+ * The default is to use normal windows.
+ *
+ * Input only event boxes are useful when you want the contents
+ * of the event box to follow the theme of the parent widget
+ * better. They don't overdraw the background of the parent
+ * window.
+ *
+ * Since: 2.4
+ **/
+void
+gtk_event_box_set_input_only (GtkEventBox *event_box,
+ gboolean input_only)
+{
+ GtkWidget *widget;
+ GtkEventBoxPrivate *priv;
+
+ g_return_if_fail (event_box != NULL);
+ g_return_if_fail (GTK_IS_EVENT_BOX (event_box));
+
+ widget = GTK_WIDGET (event_box);
+ priv = GTK_EVENT_BOX_GET_PRIVATE (event_box);
+
+ input_only = input_only != FALSE;
+
+ if (priv->input_only != input_only)
+ {
+ if (GTK_WIDGET_REALIZED (widget))
+ {
+ gboolean visible = GTK_WIDGET_VISIBLE (widget);
+
+ if (visible)
+ gtk_widget_hide (widget);
+
+ gtk_widget_unrealize (widget);
+ priv->input_only = input_only;
+
+ if (priv->input_only)
+ GTK_WIDGET_SET_FLAGS (widget, GTK_NO_WINDOW);
+ else
+ GTK_WIDGET_UNSET_FLAGS (widget, GTK_NO_WINDOW);
+
+ gtk_widget_realize (widget);
+
+ if (visible)
+ gtk_widget_show (widget);
+ }
+ else
+ {
+ priv->input_only = input_only;
+
+ if (priv->input_only)
+ GTK_WIDGET_SET_FLAGS (widget, GTK_NO_WINDOW);
+ else
+ GTK_WIDGET_UNSET_FLAGS (widget, GTK_NO_WINDOW);
+ }
+
+ if (GTK_WIDGET_VISIBLE (widget))
+ gtk_widget_queue_resize (widget);
+ }
+
+}
+
+
static void
gtk_event_box_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
gint border_width;
+ GtkEventBoxPrivate *priv;
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
@@ -112,9 +228,6 @@ gtk_event_box_realize (GtkWidget *widget
attributes.width = widget->allocation.width - 2*border_width;
attributes.height = widget->allocation.height - 2*border_width;
attributes.window_type = GDK_WINDOW_CHILD;
- attributes.wclass = GDK_INPUT_OUTPUT;
- attributes.visual = gtk_widget_get_visual (widget);
- attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget)
| GDK_BUTTON_MOTION_MASK
| GDK_BUTTON_PRESS_MASK
@@ -123,16 +236,94 @@ gtk_event_box_realize (GtkWidget *widget
| GDK_ENTER_NOTIFY_MASK
| GDK_LEAVE_NOTIFY_MASK;
- attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
+
+ if (GTK_WIDGET_NO_WINDOW (widget))
+ {
+ attributes.wclass = GDK_INPUT_ONLY;
+ attributes_mask = GDK_WA_X | GDK_WA_Y;
+
+ widget->window = gtk_widget_get_parent_window (widget);
+ g_object_ref (widget->window);
+
+ priv = GTK_EVENT_BOX_GET_PRIVATE (widget);
+ priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
+ &attributes, attributes_mask);
+ gdk_window_set_user_data (priv->event_window, widget);
+ }
+ else
+ {
+ attributes.visual = gtk_widget_get_visual (widget);
+ attributes.colormap = gtk_widget_get_colormap (widget);
+ attributes.wclass = GDK_INPUT_OUTPUT;
+
+ attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
+
+ widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
+ gdk_window_set_user_data (widget->window, widget);
+ }
- widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
- gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
- gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
+
+ if (!GTK_WIDGET_NO_WINDOW (widget))
+ gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
+}
+
+static void
+gtk_event_box_unrealize (GtkWidget *widget)
+{
+ GtkEventBox *event_box;
+ GtkEventBoxPrivate *priv;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_EVENT_BOX (widget));
+
+ event_box = GTK_EVENT_BOX (widget);
+
+ if (GTK_WIDGET_NO_WINDOW (widget))
+ {
+ priv = GTK_EVENT_BOX_GET_PRIVATE (event_box);
+
+ gdk_window_set_user_data (priv->event_window, NULL);
+ gdk_window_destroy (priv->event_window);
+ priv->event_window = NULL;
+ }
+
+ if (GTK_WIDGET_CLASS (parent_class)->unrealize)
+ (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
+gtk_event_box_map (GtkWidget *widget)
+{
+ GtkEventBoxPrivate *priv;
+
+ (* GTK_WIDGET_CLASS (parent_class)->map) (widget);
+
+ if (GTK_WIDGET_NO_WINDOW (widget))
+ {
+ priv = GTK_EVENT_BOX_GET_PRIVATE (widget);
+ gdk_window_show (priv->event_window);
+ }
+}
+
+static void
+gtk_event_box_unmap (GtkWidget *widget)
+{
+ GtkEventBoxPrivate *priv;
+
+ if (GTK_WIDGET_NO_WINDOW (widget))
+ {
+ priv = GTK_EVENT_BOX_GET_PRIVATE (widget);
+ gdk_window_hide (priv->event_window);
+ }
+
+ (* GTK_WIDGET_CLASS (parent_class)->unmap) (widget);
+}
+
+
+
+static void
gtk_event_box_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
@@ -154,22 +345,36 @@ gtk_event_box_size_request (GtkWidget
static void
gtk_event_box_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation)
+ GtkAllocation *allocation)
{
GtkBin *bin;
GtkAllocation child_allocation;
+ GdkWindow *window;
widget->allocation = *allocation;
bin = GTK_BIN (widget);
- child_allocation.x = 0;
- child_allocation.y = 0;
+
+ if (GTK_WIDGET_NO_WINDOW (widget))
+ {
+ child_allocation.x = allocation->x + GTK_CONTAINER (widget)->border_width;
+ child_allocation.y = allocation->y + GTK_CONTAINER (widget)->border_width;
+ }
+ else
+ {
+ child_allocation.x = 0;
+ child_allocation.y = 0;
+ }
child_allocation.width = MAX (allocation->width - GTK_CONTAINER (widget)->border_width * 2, 0);
child_allocation.height = MAX (allocation->height - GTK_CONTAINER (widget)->border_width * 2, 0);
if (GTK_WIDGET_REALIZED (widget))
{
- gdk_window_move_resize (widget->window,
+ if (GTK_WIDGET_NO_WINDOW (widget))
+ window = GTK_EVENT_BOX_GET_PRIVATE (widget)->event_window;
+ else
+ window = widget->window;
+ gdk_window_move_resize (window,
allocation->x + GTK_CONTAINER (widget)->border_width,
allocation->y + GTK_CONTAINER (widget)->border_width,
child_allocation.width,
@@ -199,7 +404,8 @@ gtk_event_box_expose (GtkWidget *wi
{
if (GTK_WIDGET_DRAWABLE (widget))
{
- gtk_event_box_paint (widget, &event->area);
+ if (!GTK_WIDGET_NO_WINDOW (widget))
+ gtk_event_box_paint (widget, &event->area);
(* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
}
Index: gtk/gtkeventbox.h
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkeventbox.h,v
retrieving revision 1.9
diff -u -p -r1.9 gtkeventbox.h
--- gtk/gtkeventbox.h 10 Oct 2002 22:00:09 -0000 1.9
+++ gtk/gtkeventbox.h 20 Aug 2003 11:40:48 -0000
@@ -44,7 +44,6 @@ extern "C" {
#define GTK_IS_EVENT_BOX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_EVENT_BOX))
#define GTK_EVENT_BOX_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_EVENT_BOX, GtkEventBoxClass))
-
typedef struct _GtkEventBox GtkEventBox;
typedef struct _GtkEventBoxClass GtkEventBoxClass;
@@ -60,6 +59,9 @@ struct _GtkEventBoxClass
GType gtk_event_box_get_type (void) G_GNUC_CONST;
GtkWidget* gtk_event_box_new (void);
+void gtk_event_box_set_input_only (GtkEventBox *event_box,
+ gboolean input_only);
+gboolean gtk_event_box_get_input_only (GtkEventBox *event_box);
#ifdef __cplusplus
}
Index: tests/testgtk.c
===================================================================
RCS file: /cvs/gnome/gtk+/tests/testgtk.c,v
retrieving revision 1.336
diff -u -p -r1.336 testgtk.c
--- tests/testgtk.c 10 Aug 2003 23:37:27 -0000 1.336
+++ tests/testgtk.c 20 Aug 2003 11:40:49 -0000
@@ -4434,6 +4434,102 @@ create_entry (GtkWidget *widget)
gtk_widget_destroy (window);
}
+/* GtkEventBox */
+
+
+static void
+event_box_label_pressed (GtkWidget *widget,
+ GdkEventButton *event,
+ gpointer user_data)
+{
+ g_print ("clicked on label\n");
+}
+
+static void
+event_box_toggle_input_only (GtkWidget *checkbutton,
+ GtkEventBox *event_box)
+{
+ gtk_event_box_set_input_only (event_box,
+ GTK_TOGGLE_BUTTON(checkbutton)->active);
+}
+
+static void
+create_event_box (GtkWidget *widget)
+{
+ static GtkWidget *window = NULL;
+ GtkWidget *box1;
+ GtkWidget *box2;
+ GtkWidget *hbox;
+ GtkWidget *button;
+ GtkWidget *separator;
+ GtkWidget *event_box;
+ GtkWidget *label;
+ GtkWidget *input_only_check;
+ GdkColor color;
+
+ if (!window)
+ {
+ color.red = 0;
+ color.blue = 65535;
+ color.green = 0;
+
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ gtk_window_set_screen (GTK_WINDOW (window),
+ gtk_widget_get_screen (widget));
+
+ g_signal_connect (window, "destroy",
+ G_CALLBACK (gtk_widget_destroyed),
+ &window);
+
+ gtk_window_set_title (GTK_WINDOW (window), "event box");
+ gtk_container_set_border_width (GTK_CONTAINER (window), 0);
+
+ box1 = gtk_vbox_new (FALSE, 0);
+ gtk_container_add (GTK_CONTAINER (window), box1);
+ gtk_widget_modify_bg (window, GTK_STATE_NORMAL, &color);
+
+ hbox = gtk_hbox_new (FALSE, 0);
+ gtk_box_pack_start (GTK_BOX (box1), hbox, TRUE, FALSE, 0);
+
+ event_box = gtk_event_box_new ();
+ gtk_box_pack_start (GTK_BOX (hbox), event_box, TRUE, FALSE, 0);
+
+ label = gtk_label_new ("Click on this label");
+ gtk_container_add (GTK_CONTAINER (event_box), label);
+
+ g_signal_connect (event_box, "button_press_event",
+ G_CALLBACK (event_box_label_pressed),
+ NULL);
+
+ input_only_check = gtk_check_button_new_with_label("Input Only Window");
+ gtk_box_pack_start (GTK_BOX (box1), input_only_check, FALSE, TRUE, 0);
+ g_signal_connect (input_only_check, "toggled",
+ G_CALLBACK (event_box_toggle_input_only), event_box);
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (input_only_check), FALSE);
+
+ separator = gtk_hseparator_new ();
+ gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
+
+ box2 = gtk_vbox_new (FALSE, 10);
+ gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
+ gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0);
+
+ button = gtk_button_new_with_label ("close");
+ g_signal_connect_swapped (button, "clicked",
+ G_CALLBACK (gtk_widget_destroy),
+ window);
+ gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0);
+ GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
+ gtk_widget_grab_default (button);
+ }
+
+ if (!GTK_WIDGET_VISIBLE (window))
+ gtk_widget_show_all (window);
+ else
+ gtk_widget_destroy (window);
+}
+
+
/*
* GtkSizeGroup
*/
@@ -12310,6 +12406,7 @@ struct {
{ "dialog", create_dialog },
{ "display & screen", create_display_screen },
{ "entry", create_entry },
+ { "event box", create_event_box },
{ "event watcher", create_event_watcher },
{ "file selection", create_file_selection },
{ "flipping", create_flipping },
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