gtk2/gtk/gtkpaned.c
CST 1999 Shawn T. Amundson 279e878bdd Added notice to look in AUTHORS and ChangeLog files for a list of changes.
Wed Feb 24 01:22:39 CST 1999 Shawn T. Amundson <amundson@gtk.org>

        * *.[ch]: Added notice to look in AUTHORS and ChangeLog files
	  for a list of changes.
1999-02-24 07:37:18 +00:00

544 lines
14 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.
*/
/*
* Modified by the GTK+ Team and others 1997-1999. 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 "gtkpaned.h"
static void gtk_paned_class_init (GtkPanedClass *klass);
static void gtk_paned_init (GtkPaned *paned);
static void gtk_paned_realize (GtkWidget *widget);
static void gtk_paned_map (GtkWidget *widget);
static void gtk_paned_unmap (GtkWidget *widget);
static void gtk_paned_unrealize (GtkWidget *widget);
static gint gtk_paned_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_paned_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_paned_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_paned_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static GtkType gtk_paned_child_type (GtkContainer *container);
static GtkContainerClass *parent_class = NULL;
GtkType
gtk_paned_get_type (void)
{
static GtkType paned_type = 0;
if (!paned_type)
{
static const GtkTypeInfo paned_info =
{
"GtkPaned",
sizeof (GtkPaned),
sizeof (GtkPanedClass),
(GtkClassInitFunc) gtk_paned_class_init,
(GtkObjectInitFunc) gtk_paned_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
paned_type = gtk_type_unique (GTK_TYPE_CONTAINER, &paned_info);
}
return paned_type;
}
static void
gtk_paned_class_init (GtkPanedClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
widget_class->realize = gtk_paned_realize;
widget_class->map = gtk_paned_map;
widget_class->unmap = gtk_paned_unmap;
widget_class->unrealize = gtk_paned_unrealize;
widget_class->expose_event = gtk_paned_expose;
container_class->add = gtk_paned_add;
container_class->remove = gtk_paned_remove;
container_class->forall = gtk_paned_forall;
container_class->child_type = gtk_paned_child_type;
}
static GtkType
gtk_paned_child_type (GtkContainer *container)
{
if (!GTK_PANED (container)->child1 || !GTK_PANED (container)->child2)
return GTK_TYPE_WIDGET;
else
return GTK_TYPE_NONE;
}
static void
gtk_paned_init (GtkPaned *paned)
{
GTK_WIDGET_UNSET_FLAGS (paned, GTK_NO_WINDOW);
paned->child1 = NULL;
paned->child2 = NULL;
paned->handle = NULL;
paned->xor_gc = NULL;
paned->handle_size = 10;
paned->gutter_size = 6;
paned->position_set = FALSE;
paned->last_allocation = -1;
paned->in_drag = FALSE;
paned->handle_xpos = -1;
paned->handle_ypos = -1;
}
static void
gtk_paned_realize (GtkWidget *widget)
{
GtkPaned *paned;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_PANED (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
paned = GTK_PANED (widget);
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
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_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, paned);
attributes.x = paned->handle_xpos;
attributes.y = paned->handle_ypos;
attributes.width = paned->handle_size;
attributes.height = paned->handle_size;
attributes.cursor = gdk_cursor_new (GDK_CROSS);
attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK);
attributes_mask |= GDK_WA_CURSOR;
paned->handle = gdk_window_new (widget->window,
&attributes, attributes_mask);
gdk_window_set_user_data (paned->handle, paned);
gdk_cursor_destroy (attributes.cursor);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
gtk_style_set_background (widget->style, paned->handle, GTK_STATE_NORMAL);
gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
gdk_window_show (paned->handle);
}
static void
gtk_paned_map (GtkWidget *widget)
{
GtkPaned *paned;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_PANED (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
paned = GTK_PANED (widget);
if (paned->child1 &&
GTK_WIDGET_VISIBLE (paned->child1) &&
!GTK_WIDGET_MAPPED (paned->child1))
gtk_widget_map (paned->child1);
if (paned->child2 &&
GTK_WIDGET_VISIBLE (paned->child2) &&
!GTK_WIDGET_MAPPED (paned->child2))
gtk_widget_map (paned->child2);
gdk_window_show (widget->window);
}
static void
gtk_paned_unmap (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_PANED (widget));
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
gdk_window_hide (widget->window);
}
static void
gtk_paned_unrealize (GtkWidget *widget)
{
GtkPaned *paned;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_PANED (widget));
paned = GTK_PANED (widget);
if (paned->xor_gc)
{
gdk_gc_destroy (paned->xor_gc);
paned->xor_gc = NULL;
}
if (paned->handle)
{
gdk_window_set_user_data (paned->handle, NULL);
gdk_window_destroy (paned->handle);
paned->handle = NULL;
}
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static gint
gtk_paned_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkPaned *paned;
GdkEventExpose child_event;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_PANED (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
paned = GTK_PANED (widget);
/* An expose event for the handle */
if (event->window == paned->handle)
{
gtk_paint_box (widget->style, paned->handle,
GTK_WIDGET_STATE(widget),
GTK_SHADOW_OUT,
&event->area, widget, "paned",
0, 0,
paned->handle_size, paned->handle_size);
}
else
{
child_event = *event;
if (paned->child1 &&
GTK_WIDGET_NO_WINDOW (paned->child1) &&
gtk_widget_intersect (paned->child1, &event->area, &child_event.area))
gtk_widget_event (paned->child1, (GdkEvent*) &child_event);
if (paned->child2 &&
GTK_WIDGET_NO_WINDOW (paned->child2) &&
gtk_widget_intersect (paned->child2, &event->area, &child_event.area))
gtk_widget_event (paned->child2, (GdkEvent*) &child_event);
/* redraw the groove if necessary */
if (gdk_rectangle_intersect (&paned->groove_rectangle,
&event->area,
&child_event.area))
gtk_widget_draw (widget, &child_event.area);
}
}
return FALSE;
}
void
gtk_paned_add1 (GtkPaned *paned,
GtkWidget *widget)
{
gtk_paned_pack1 (paned, widget, FALSE, TRUE);
}
void
gtk_paned_add2 (GtkPaned *paned,
GtkWidget *widget)
{
gtk_paned_pack2 (paned, widget, TRUE, TRUE);
}
void
gtk_paned_pack1 (GtkPaned *paned,
GtkWidget *widget,
gboolean resize,
gboolean shrink)
{
g_return_if_fail (paned != NULL);
g_return_if_fail (GTK_IS_PANED (paned));
g_return_if_fail (widget != NULL);
if (!paned->child1)
{
gtk_widget_set_parent (widget, GTK_WIDGET (paned));
if (GTK_WIDGET_VISIBLE (widget->parent))
{
if (GTK_WIDGET_REALIZED (widget->parent) &&
!GTK_WIDGET_REALIZED (widget))
gtk_widget_realize (widget);
if (GTK_WIDGET_MAPPED (widget->parent) &&
!GTK_WIDGET_MAPPED (widget))
gtk_widget_map (widget);
}
paned->child1 = widget;
paned->child1_resize = resize;
paned->child1_shrink = shrink;
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (paned))
gtk_widget_queue_resize (widget);
}
}
void
gtk_paned_pack2 (GtkPaned *paned,
GtkWidget *widget,
gboolean resize,
gboolean shrink)
{
g_return_if_fail (paned != NULL);
g_return_if_fail (GTK_IS_PANED (paned));
g_return_if_fail (widget != NULL);
if (!paned->child2)
{
gtk_widget_set_parent (widget, GTK_WIDGET (paned));
if (GTK_WIDGET_VISIBLE (widget->parent))
{
if (GTK_WIDGET_REALIZED (widget->parent) &&
!GTK_WIDGET_REALIZED (widget))
gtk_widget_realize (widget);
if (GTK_WIDGET_MAPPED (widget->parent) &&
!GTK_WIDGET_MAPPED (widget))
gtk_widget_map (widget);
}
paned->child2 = widget;
paned->child2_resize = resize;
paned->child2_shrink = shrink;
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (paned))
gtk_widget_queue_resize (widget);
}
}
static void
gtk_paned_add (GtkContainer *container,
GtkWidget *widget)
{
GtkPaned *paned;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_PANED (container));
g_return_if_fail (widget != NULL);
paned = GTK_PANED (container);
if (!paned->child1)
gtk_paned_add1 (GTK_PANED (container),widget);
else if (!paned->child2)
gtk_paned_add2 (GTK_PANED (container),widget);
}
static void
gtk_paned_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkPaned *paned;
gboolean was_visible;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_PANED (container));
g_return_if_fail (widget != NULL);
paned = GTK_PANED (container);
was_visible = GTK_WIDGET_VISIBLE (widget);
if (paned->child1 == widget)
{
gtk_widget_unparent (widget);
paned->child1 = NULL;
if (was_visible && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (GTK_WIDGET (container));
}
else if (paned->child2 == widget)
{
gtk_widget_unparent (widget);
paned->child2 = NULL;
if (was_visible && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (GTK_WIDGET (container));
}
}
static void
gtk_paned_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkPaned *paned;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_PANED (container));
g_return_if_fail (callback != NULL);
paned = GTK_PANED (container);
if (paned->child1)
(* callback) (paned->child1, callback_data);
if (paned->child2)
(* callback) (paned->child2, callback_data);
}
void
gtk_paned_set_position (GtkPaned *paned,
gint position)
{
g_return_if_fail (paned != NULL);
g_return_if_fail (GTK_IS_PANED (paned));
if (position >= 0)
{
paned->child1_size = CLAMP (position,
paned->min_position,
paned->max_position);
paned->position_set = TRUE;
}
else
paned->position_set = FALSE;
gtk_widget_queue_resize (GTK_WIDGET (paned));
}
void
gtk_paned_set_handle_size (GtkPaned *paned,
guint16 size)
{
gint x,y;
g_return_if_fail (paned != NULL);
g_return_if_fail (GTK_IS_PANED (paned));
if (paned->handle)
{
gdk_window_get_geometry (paned->handle, &x, &y, NULL, NULL, NULL);
gdk_window_move_resize (paned->handle,
x + paned->handle_size / 2 - size / 2,
y + paned->handle_size / 2 - size / 2,
size, size);
}
paned->handle_size = size;
}
void
gtk_paned_set_gutter_size (GtkPaned *paned,
guint16 size)
{
g_return_if_fail (paned != NULL);
g_return_if_fail (GTK_IS_PANED (paned));
paned->gutter_size = size;
if (GTK_WIDGET_VISIBLE (GTK_WIDGET (paned)))
gtk_widget_queue_resize (GTK_WIDGET (paned));
}
void
gtk_paned_compute_position (GtkPaned *paned,
gint allocation,
gint child1_req,
gint child2_req)
{
g_return_if_fail (paned != NULL);
g_return_if_fail (GTK_IS_PANED (paned));
paned->min_position = paned->child1_shrink ? 0 : child1_req;
paned->max_position = allocation;
if (!paned->child2_shrink)
paned->max_position -= child2_req;
if (!paned->position_set)
{
if (paned->child1_resize && !paned->child2_resize)
paned->child1_size = allocation - child2_req;
else if (!paned->child1_resize && paned->child2_resize)
paned->child1_size = child1_req;
else
paned->child1_size = allocation * ((gdouble)child1_req / (child1_req + child2_req));
}
else
{
if (paned->last_allocation < 0)
paned->last_allocation = allocation;
if (paned->child1_resize && !paned->child2_resize)
paned->child1_size += (allocation - paned->last_allocation);
else if (!(!paned->child1_resize && paned->child2_resize))
paned->child1_size = allocation * ((gdouble)paned->child1_size / (paned->last_allocation));
}
paned->child1_size = CLAMP (paned->child1_size,
paned->min_position,
paned->max_position);
paned->last_allocation = allocation;
}