gtk2/gtk/gtkmisc.c
Elliot Lee 060978e069 I submitted this patch twice to gtk-devel-list, and received no comments,
I submitted this patch twice to gtk-devel-list, and received no comments, so
am committing it.  Although not exhaustively tested, I have been using this
gtk+ for a week w/o problems, and I did read the code to ensure that nothing
ever writes to these data structures. If by chance people encounter SEGV's in
gtk+ code that is setting values in global data structures, this patch could
be a possible culprit.

1998-11-30  Elliot Lee  <sopwith@cuc.ml.org>

	* {gdk,gtk}/*.c: Make read-only data structures "static const" to
	allow them to be shared, mainly including (but not limited to) the
	GtkTypeInfo structures for each class.

	* gtk/gtkfilesel.c: Add /net to the "leave me alone" directory listing.
1998-11-30 19:07:15 +00:00

259 lines
6.5 KiB
C

/* 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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#include "gtkcontainer.h"
#include "gtkmisc.h"
enum {
ARG_0,
ARG_XALIGN,
ARG_YALIGN,
ARG_XPAD,
ARG_YPAD
};
static void gtk_misc_class_init (GtkMiscClass *klass);
static void gtk_misc_init (GtkMisc *misc);
static void gtk_misc_realize (GtkWidget *widget);
static void gtk_misc_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_misc_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
GtkType
gtk_misc_get_type (void)
{
static GtkType misc_type = 0;
if (!misc_type)
{
static const GtkTypeInfo misc_info =
{
"GtkMisc",
sizeof (GtkMisc),
sizeof (GtkMiscClass),
(GtkClassInitFunc) gtk_misc_class_init,
(GtkObjectInitFunc) gtk_misc_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
misc_type = gtk_type_unique (GTK_TYPE_WIDGET, &misc_info);
}
return misc_type;
}
static void
gtk_misc_class_init (GtkMiscClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
gtk_object_add_arg_type ("GtkMisc::xalign", GTK_TYPE_FLOAT, GTK_ARG_READWRITE, ARG_XALIGN);
gtk_object_add_arg_type ("GtkMisc::yalign", GTK_TYPE_FLOAT, GTK_ARG_READWRITE, ARG_YALIGN);
gtk_object_add_arg_type ("GtkMisc::xpad", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_XPAD);
gtk_object_add_arg_type ("GtkMisc::ypad", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_YPAD);
object_class->set_arg = gtk_misc_set_arg;
object_class->get_arg = gtk_misc_get_arg;
widget_class->realize = gtk_misc_realize;
}
static void
gtk_misc_init (GtkMisc *misc)
{
misc->xalign = 0.5;
misc->yalign = 0.5;
misc->xpad = 0;
misc->ypad = 0;
}
static void
gtk_misc_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkMisc *misc;
misc = GTK_MISC (object);
switch (arg_id)
{
case ARG_XALIGN:
gtk_misc_set_alignment (misc, GTK_VALUE_FLOAT (*arg), misc->yalign);
break;
case ARG_YALIGN:
gtk_misc_set_alignment (misc, misc->xalign, GTK_VALUE_FLOAT (*arg));
break;
case ARG_XPAD:
gtk_misc_set_padding (misc, GTK_VALUE_INT (*arg), misc->ypad);
break;
case ARG_YPAD:
gtk_misc_set_padding (misc, misc->xpad, GTK_VALUE_INT (*arg));
break;
default:
break;
}
}
static void
gtk_misc_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkMisc *misc;
misc = GTK_MISC (object);
switch (arg_id)
{
case ARG_XALIGN:
GTK_VALUE_FLOAT (*arg) = misc->xalign;
break;
case ARG_YALIGN:
GTK_VALUE_FLOAT (*arg) = misc->yalign;
break;
case ARG_XPAD:
GTK_VALUE_INT (*arg) = misc->xpad;
break;
case ARG_YPAD:
GTK_VALUE_INT (*arg) = misc->ypad;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
void
gtk_misc_set_alignment (GtkMisc *misc,
gfloat xalign,
gfloat yalign)
{
g_return_if_fail (misc != NULL);
g_return_if_fail (GTK_IS_MISC (misc));
if (xalign < 0.0)
xalign = 0.0;
else if (xalign > 1.0)
xalign = 1.0;
if (yalign < 0.0)
yalign = 0.0;
else if (yalign > 1.0)
yalign = 1.0;
if ((xalign != misc->xalign) || (yalign != misc->yalign))
{
misc->xalign = xalign;
misc->yalign = yalign;
/* clear the area that was allocated before the change
*/
if (GTK_WIDGET_DRAWABLE (misc))
{
GtkWidget *widget;
widget = GTK_WIDGET (misc);
gtk_widget_queue_clear (widget);
}
}
}
void
gtk_misc_set_padding (GtkMisc *misc,
gint xpad,
gint ypad)
{
GtkRequisition *requisition;
g_return_if_fail (misc != NULL);
g_return_if_fail (GTK_IS_MISC (misc));
if (xpad < 0)
xpad = 0;
if (ypad < 0)
ypad = 0;
if ((xpad != misc->xpad) || (ypad != misc->ypad))
{
requisition = &(GTK_WIDGET (misc)->requisition);
requisition->width -= misc->xpad * 2;
requisition->height -= misc->ypad * 2;
misc->xpad = xpad;
misc->ypad = ypad;
requisition->width += misc->xpad * 2;
requisition->height += misc->ypad * 2;
if (GTK_WIDGET_DRAWABLE (misc))
gtk_widget_queue_resize (GTK_WIDGET (misc));
}
}
static void
gtk_misc_realize (GtkWidget *widget)
{
GtkMisc *misc;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MISC (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
misc = GTK_MISC (widget);
if (GTK_WIDGET_NO_WINDOW (widget))
{
widget->window = gtk_widget_get_parent_window (widget);
gdk_window_ref (widget->window);
widget->style = gtk_style_attach (widget->style, widget->window);
}
else
{
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_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
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->style = gtk_style_attach (widget->style, widget->window);
gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
}
}