gtk2/gtk/gtkeventbox.c

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/* GTK - The GIMP Toolkit
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* 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
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* 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.
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*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
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*/
/*
* Modified by the GTK+ Team and others 1997-2000. 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"
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#include "gtkeventbox.h"
#include "gtkprivate.h"
#include "gtkintl.h"
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typedef struct
{
gboolean above_child;
GdkWindow *event_window;
} GtkEventBoxPrivate;
enum {
PROP_0,
PROP_VISIBLE_WINDOW,
PROP_ABOVE_CHILD
};
#define GTK_EVENT_BOX_GET_PRIVATE(obj) G_TYPE_INSTANCE_GET_PRIVATE((obj), GTK_TYPE_EVENT_BOX, GtkEventBoxPrivate)
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,
GtkAllocation *allocation);
static void gtk_event_box_paint (GtkWidget *widget,
GdkRectangle *area);
static gboolean gtk_event_box_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_event_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_event_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
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G_DEFINE_TYPE (GtkEventBox, gtk_event_box, GTK_TYPE_BIN)
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static void
gtk_event_box_class_init (GtkEventBoxClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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gobject_class->set_property = gtk_event_box_set_property;
gobject_class->get_property = gtk_event_box_get_property;
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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;
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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_object_class_install_property (gobject_class,
PROP_VISIBLE_WINDOW,
g_param_spec_boolean ("visible-window",
P_("Visible Window"),
P_("Whether the event box is visible, as opposed to invisible and only used to trap events."),
TRUE,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ABOVE_CHILD,
g_param_spec_boolean ("above-child",
P_("Above child"),
P_("Whether the event-trapping window of the eventbox is above the window of the child widget as opposed to below it."),
FALSE,
GTK_PARAM_READWRITE));
g_type_class_add_private (class, sizeof (GtkEventBoxPrivate));
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}
static void
gtk_event_box_init (GtkEventBox *event_box)
{
GtkEventBoxPrivate *priv;
gtk_widget_set_has_window (GTK_WIDGET (event_box), TRUE);
priv = GTK_EVENT_BOX_GET_PRIVATE (event_box);
priv->above_child = FALSE;
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}
GtkWidget*
configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on Sun May 3 13:38:22 1998 Owen Taylor <otaylor@gtk.org> * configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on the client and server side. (And, more importantly, check for the shape extension so we may include -lXext even when compiling with --disable-xshm) Don't set override_redirect on all shaped windows. It isn't necessary. * gdk/gdkwindow.c: Set ->colormap to NULL for root and foreign windows. Use this to check if we need to get the colormap from X. Fri May 1 22:32:47 1998 Owen Taylor <otaylor@gtk.org> * gtk/gtkbutton.c (gtk_button_paint): Draw the areas between the default and the button always in GTK_STATE_NORMAL. * gtk/gtkrange.c (gtk_range_style_set): Added a style_set callback. Fri May 1 16:40:57 1998 Owen Taylor <otaylor@gtk.org> * gdk/gdkpixmap.c (gdk_pixmap_colormap_create_from_xpmp[_d]): Fix a buffer overflow on pixmaps that claim to have more than 31 characters per pixel. (gdk_pixmap_read_string): Don't wrap around strings longer than half of address space ;-) * gtk/gtk[vh]ruler.c gtk/gtkinputdialog.c: Expand some buffers that were used for printing integers. * */* (almost): Style: All int foo () { ... } changed to int foo (void) { ... } ^^^^^^^ This is why some many files changed Even where there were proper prototypes elsewhere. * gdk/gxid.c (handle_claim_device): Some extra checks. It isn't safe against being fed bad X id's, but at least it should be safe against deleting all your files.
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gtk_event_box_new (void)
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{
return g_object_new (GTK_TYPE_EVENT_BOX, NULL);
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}
static void
gtk_event_box_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkEventBox *event_box;
event_box = GTK_EVENT_BOX (object);
switch (prop_id)
{
case PROP_VISIBLE_WINDOW:
gtk_event_box_set_visible_window (event_box, g_value_get_boolean (value));
break;
case PROP_ABOVE_CHILD:
gtk_event_box_set_above_child (event_box, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_event_box_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkEventBox *event_box;
event_box = GTK_EVENT_BOX (object);
switch (prop_id)
{
case PROP_VISIBLE_WINDOW:
g_value_set_boolean (value, gtk_event_box_get_visible_window (event_box));
break;
case PROP_ABOVE_CHILD:
g_value_set_boolean (value, gtk_event_box_get_above_child (event_box));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gtk_event_box_get_visible_window:
* @event_box: a #GtkEventBox
*
* Returns whether the event box has a visible window.
* See gtk_event_box_set_visible_window() for details.
*
* Return value: %TRUE if the event box window is visible
*
* Since: 2.4
**/
gboolean
gtk_event_box_get_visible_window (GtkEventBox *event_box)
{
g_return_val_if_fail (GTK_IS_EVENT_BOX (event_box), FALSE);
return gtk_widget_get_has_window (GTK_WIDGET (event_box));
}
/**
* gtk_event_box_set_visible_window:
* @event_box: a #GtkEventBox
* @visible_window: boolean value
*
* Set whether the event box uses a visible or invisible child
* window. The default is to use visible windows.
*
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* In an invisible window event box, the window that the
* event box creates is a %GDK_INPUT_ONLY window, which
* means that it is invisible and only serves to receive
* events.
*
* A visible window event box creates a visible (%GDK_INPUT_OUTPUT)
* window that acts as the parent window for all the widgets
* contained in the event box.
*
* You should generally make your event box invisible if
* you just want to trap events. Creating a visible window
* may cause artifacts that are visible to the user, especially
* if the user is using a theme with gradients or pixmaps.
*
* The main reason to create a non input-only event box is if
* you want to set the background to a different color or
* draw on it.
*
* <note><para>
* There is one unexpected issue for an invisible event box that has its
* window below the child. (See gtk_event_box_set_above_child().)
* Since the input-only window is not an ancestor window of any windows
* that descendent widgets of the event box create, events on these
* windows aren't propagated up by the windowing system, but only by GTK+.
* The practical effect of this is if an event isn't in the event
* mask for the descendant window (see gtk_widget_add_events()),
* it won't be received by the event box.
* </para><para>
* This problem doesn't occur for visible event boxes, because in
* that case, the event box window is actually the ancestor of the
* descendant windows, not just at the same place on the screen.
* </para></note>
*
* Since: 2.4
**/
void
gtk_event_box_set_visible_window (GtkEventBox *event_box,
gboolean visible_window)
{
GtkWidget *widget;
g_return_if_fail (GTK_IS_EVENT_BOX (event_box));
widget = GTK_WIDGET (event_box);
visible_window = visible_window != FALSE;
if (visible_window != gtk_widget_get_has_window (widget))
{
if (gtk_widget_get_realized (widget))
{
gboolean visible = gtk_widget_get_visible (widget);
if (visible)
gtk_widget_hide (widget);
gtk_widget_unrealize (widget);
gtk_widget_set_has_window (widget, visible_window);
gtk_widget_realize (widget);
if (visible)
gtk_widget_show (widget);
}
else
{
gtk_widget_set_has_window (widget, visible_window);
}
if (gtk_widget_get_visible (widget))
gtk_widget_queue_resize (widget);
g_object_notify (G_OBJECT (event_box), "visible-window");
}
}
/**
* gtk_event_box_get_above_child:
* @event_box: a #GtkEventBox
*
* Returns whether the event box window is above or below the
* windows of its child. See gtk_event_box_set_above_child() for
* details.
*
* Return value: %TRUE if the event box window is above the window
* of its child.
*
* Since: 2.4
**/
gboolean
gtk_event_box_get_above_child (GtkEventBox *event_box)
{
GtkEventBoxPrivate *priv;
g_return_val_if_fail (GTK_IS_EVENT_BOX (event_box), FALSE);
priv = GTK_EVENT_BOX_GET_PRIVATE (event_box);
return priv->above_child;
}
/**
* gtk_event_box_set_above_child:
* @event_box: a #GtkEventBox
* @above_child: %TRUE if the event box window is above the windows of its child
*
* Set whether the event box window is positioned above the windows of its child,
* as opposed to below it. If the window is above, all events inside the
* event box will go to the event box. If the window is below, events
* in windows of child widgets will first got to that widget, and then
* to its parents.
*
* The default is to keep the window below the child.
*
* Since: 2.4
**/
void
gtk_event_box_set_above_child (GtkEventBox *event_box,
gboolean above_child)
{
GtkWidget *widget;
GtkEventBoxPrivate *priv;
g_return_if_fail (GTK_IS_EVENT_BOX (event_box));
widget = GTK_WIDGET (event_box);
priv = GTK_EVENT_BOX_GET_PRIVATE (event_box);
above_child = above_child != FALSE;
if (priv->above_child != above_child)
{
priv->above_child = above_child;
if (gtk_widget_get_realized (widget))
{
if (!gtk_widget_get_has_window (widget))
{
if (above_child)
gdk_window_raise (priv->event_window);
else
gdk_window_lower (priv->event_window);
}
else
{
gboolean visible = gtk_widget_get_visible (widget);
if (visible)
gtk_widget_hide (widget);
gtk_widget_unrealize (widget);
gtk_widget_realize (widget);
if (visible)
gtk_widget_show (widget);
}
}
if (gtk_widget_get_visible (widget))
gtk_widget_queue_resize (widget);
g_object_notify (G_OBJECT (event_box), "above-child");
}
}
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static void
gtk_event_box_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
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gint border_width;
GtkEventBoxPrivate *priv;
gboolean visible_window;
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gtk_widget_set_realized (widget, TRUE);
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border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
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attributes.x = widget->allocation.x + border_width;
attributes.y = widget->allocation.y + border_width;
attributes.width = widget->allocation.width - 2*border_width;
attributes.height = widget->allocation.height - 2*border_width;
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attributes.window_type = GDK_WINDOW_CHILD;
attributes.event_mask = gtk_widget_get_events (widget)
| GDK_BUTTON_MOTION_MASK
| GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK
| GDK_EXPOSURE_MASK
| GDK_ENTER_NOTIFY_MASK
| GDK_LEAVE_NOTIFY_MASK;
priv = GTK_EVENT_BOX_GET_PRIVATE (widget);
visible_window = gtk_widget_get_has_window (widget);
if (visible_window)
{
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);
}
else
{
widget->window = gtk_widget_get_parent_window (widget);
g_object_ref (widget->window);
}
if (!visible_window || priv->above_child)
{
attributes.wclass = GDK_INPUT_ONLY;
if (!visible_window)
attributes_mask = GDK_WA_X | GDK_WA_Y;
else
attributes_mask = 0;
priv->event_window = gdk_window_new (widget->window,
&attributes, attributes_mask);
gdk_window_set_user_data (priv->event_window, widget);
}
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widget->style = gtk_style_attach (widget->style, widget->window);
if (visible_window)
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
static void
gtk_event_box_unrealize (GtkWidget *widget)
{
GtkEventBoxPrivate *priv;
priv = GTK_EVENT_BOX_GET_PRIVATE (widget);
if (priv->event_window != NULL)
{
gdk_window_set_user_data (priv->event_window, NULL);
gdk_window_destroy (priv->event_window);
priv->event_window = NULL;
}
GTK_WIDGET_CLASS (gtk_event_box_parent_class)->unrealize (widget);
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}
static void
gtk_event_box_map (GtkWidget *widget)
{
GtkEventBoxPrivate *priv;
priv = GTK_EVENT_BOX_GET_PRIVATE (widget);
if (priv->event_window != NULL && !priv->above_child)
gdk_window_show (priv->event_window);
GTK_WIDGET_CLASS (gtk_event_box_parent_class)->map (widget);
if (priv->event_window != NULL && priv->above_child)
gdk_window_show (priv->event_window);
}
static void
gtk_event_box_unmap (GtkWidget *widget)
{
GtkEventBoxPrivate *priv;
priv = GTK_EVENT_BOX_GET_PRIVATE (widget);
if (priv->event_window != NULL)
gdk_window_hide (priv->event_window);
GTK_WIDGET_CLASS (gtk_event_box_parent_class)->unmap (widget);
}
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static void
gtk_event_box_size_request (GtkWidget *widget,
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GtkRequisition *requisition)
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{
GtkBin *bin = GTK_BIN (widget);
guint border_width;
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GtkWidget *child;
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border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
requisition->width = border_width * 2;
requisition->height = border_width * 2;
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child = gtk_bin_get_child (bin);
if (child && gtk_widget_get_visible (child))
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{
GtkRequisition child_requisition;
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gtk_widget_size_request (child, &child_requisition);
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requisition->width += child_requisition.width;
requisition->height += child_requisition.height;
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}
}
static void
gtk_event_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
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{
GtkBin *bin;
GtkAllocation child_allocation;
GtkEventBoxPrivate *priv;
guint border_width;
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GtkWidget *child;
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widget->allocation = *allocation;
bin = GTK_BIN (widget);
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
if (!gtk_widget_get_has_window (widget))
{
child_allocation.x = allocation->x + border_width;
child_allocation.y = allocation->y + border_width;
}
else
{
child_allocation.x = 0;
child_allocation.y = 0;
}
child_allocation.width = MAX (allocation->width - border_width * 2, 0);
child_allocation.height = MAX (allocation->height - border_width * 2, 0);
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if (gtk_widget_get_realized (widget))
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{
priv = GTK_EVENT_BOX_GET_PRIVATE (widget);
if (priv->event_window != NULL)
gdk_window_move_resize (priv->event_window,
child_allocation.x,
child_allocation.y,
child_allocation.width,
child_allocation.height);
if (gtk_widget_get_has_window (widget))
gdk_window_move_resize (widget->window,
allocation->x + border_width,
allocation->y + border_width,
child_allocation.width,
child_allocation.height);
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}
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child = gtk_bin_get_child (bin);
if (child)
gtk_widget_size_allocate (child, &child_allocation);
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}
nparams for selection_get should be 3, not 2. [ From Damon Chaplin Fri Jan 15 10:22:21 1999 Owen Taylor <otaylor@redhat.com> * gtk/gtkwidget.c (gtk_widget_class_init): nparams for selection_get should be 3, not 2. [ From Damon Chaplin <damon@karuna.freeserve.co.uk> ] * gtk/gtkeventbox.c (gtk_event_box_paint): Add a paint routine so queued redraws work inside event boxes. Thu Jan 14 17:47:37 1999 Owen Taylor <otaylor@redhat.com> * gtk/gtkentry.c (gtk_entry_draw_cursor_on_drawable): Only redraw character under cursor when not displaying highlighted selection. * gdk/gdkrgb.c (gdk_rgb_init): Add in a cast to gpointer to make IRIX cc happy. Thu Jan 14 12:29:50 1999 Owen Taylor <otaylor@redhat.com> * gtk/gtkcheckbutton.c (gtk_check_button_draw): Restructure the drawing code to remove a bit of duplication - and to remove a call to gtk_widget_draw_focus() that queues a redraw when an expose occurs. * gtk/gtklabel.c (gtk_label_expose): Fix up handling of ypadding. * gtk/gtknotebook.c (gtk_notebook_draw): If we redraw the whole widget, also redraw the corresponding areas of the child widget. (have_visible_child still has some problems) * gdk/gdkpixmap.c: Change some g_new's to g_new0 so that fields unused for pixmaps get initialzized sanely. * gdk/gdk.h gdk/gdkwindow.c gdk/gdkprivate.h: Add new calls gdk_window_is_visible() and gdk_window_is_viewable() and a mapped flag to the window private structure. * gtk/gtkbin.c gtk/gtkclist.c gtk/gtkfixed.c gtk/gtkitem.c gtk/gtklayout.c gtk/gtklist.c gtk/gtkmenushell.c gtk/gtknotebook.c gtk/gtkpaned.c gtk/gtktree.c gtk/gtktreeitem.c gtk/gtkviewport.c: Map windows after mapping children. * gtk/gtkwidget.c (gtk_widget_clip_rect): Handle rectangles completely clipped away correctly. * gtk/gtkwidget.c (gtk_widget_idle_draw): Don't call gtk_widget_draw if width or height is 0. * gtk/gtkwidget.c (gtk_widget_idle_draw): Don't rely on GTK_REDRAW_PENDING after we've cleared it. (This was causing draw-combining to not happen at all). * gtk/gtkbin.c gtk/gtkscale.c: Remove uneccessary calls to gtk_widget_queue_draw() when mapping.
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static void
gtk_event_box_paint (GtkWidget *widget,
GdkRectangle *area)
{
if (!gtk_widget_get_app_paintable (widget))
gtk_paint_flat_box (widget->style, widget->window,
widget->state, GTK_SHADOW_NONE,
area, widget, "eventbox",
0, 0, -1, -1);
nparams for selection_get should be 3, not 2. [ From Damon Chaplin Fri Jan 15 10:22:21 1999 Owen Taylor <otaylor@redhat.com> * gtk/gtkwidget.c (gtk_widget_class_init): nparams for selection_get should be 3, not 2. [ From Damon Chaplin <damon@karuna.freeserve.co.uk> ] * gtk/gtkeventbox.c (gtk_event_box_paint): Add a paint routine so queued redraws work inside event boxes. Thu Jan 14 17:47:37 1999 Owen Taylor <otaylor@redhat.com> * gtk/gtkentry.c (gtk_entry_draw_cursor_on_drawable): Only redraw character under cursor when not displaying highlighted selection. * gdk/gdkrgb.c (gdk_rgb_init): Add in a cast to gpointer to make IRIX cc happy. Thu Jan 14 12:29:50 1999 Owen Taylor <otaylor@redhat.com> * gtk/gtkcheckbutton.c (gtk_check_button_draw): Restructure the drawing code to remove a bit of duplication - and to remove a call to gtk_widget_draw_focus() that queues a redraw when an expose occurs. * gtk/gtklabel.c (gtk_label_expose): Fix up handling of ypadding. * gtk/gtknotebook.c (gtk_notebook_draw): If we redraw the whole widget, also redraw the corresponding areas of the child widget. (have_visible_child still has some problems) * gdk/gdkpixmap.c: Change some g_new's to g_new0 so that fields unused for pixmaps get initialzized sanely. * gdk/gdk.h gdk/gdkwindow.c gdk/gdkprivate.h: Add new calls gdk_window_is_visible() and gdk_window_is_viewable() and a mapped flag to the window private structure. * gtk/gtkbin.c gtk/gtkclist.c gtk/gtkfixed.c gtk/gtkitem.c gtk/gtklayout.c gtk/gtklist.c gtk/gtkmenushell.c gtk/gtknotebook.c gtk/gtkpaned.c gtk/gtktree.c gtk/gtktreeitem.c gtk/gtkviewport.c: Map windows after mapping children. * gtk/gtkwidget.c (gtk_widget_clip_rect): Handle rectangles completely clipped away correctly. * gtk/gtkwidget.c (gtk_widget_idle_draw): Don't call gtk_widget_draw if width or height is 0. * gtk/gtkwidget.c (gtk_widget_idle_draw): Don't rely on GTK_REDRAW_PENDING after we've cleared it. (This was causing draw-combining to not happen at all). * gtk/gtkbin.c gtk/gtkscale.c: Remove uneccessary calls to gtk_widget_queue_draw() when mapping.
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}
static gboolean
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gtk_event_box_expose (GtkWidget *widget,
GdkEventExpose *event)
{
if (gtk_widget_is_drawable (widget))
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{
if (gtk_widget_get_has_window (widget))
gtk_event_box_paint (widget, &event->area);
GTK_WIDGET_CLASS (gtk_event_box_parent_class)->expose_event (widget, event);
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}
return FALSE;
}