gimp/app/gimpconstrainedhwrapbox.c

215 lines
6.6 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* GtkHWrapBox: Horizontal wrapping box widget
* Copyright (C) 1999 Tim Janik
*
* 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 <gtk/gtk.h>
#include "gimpconstrainedhwrapbox.h"
static void gimp_constrained_hwrap_box_class_init (GimpConstrainedHWrapBoxClass *klass);
static void gimp_constrained_hwrap_box_init (GimpConstrainedHWrapBox *hwbox);
static void gimp_constrained_hwrap_box_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gimp_constrained_hwrap_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static GtkHWrapBoxClass *parent_class = NULL;
GtkType
gimp_constrained_hwrap_box_get_type (void)
{
static GtkType constrained_hwrap_box_type = 0;
if (! constrained_hwrap_box_type)
{
static const GtkTypeInfo constrained_hwrap_box_info =
{
"GimpConstrainedHWrapBox",
sizeof (GimpConstrainedHWrapBox),
sizeof (GimpConstrainedHWrapBoxClass),
(GtkClassInitFunc) gimp_constrained_hwrap_box_class_init,
(GtkObjectInitFunc) gimp_constrained_hwrap_box_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
constrained_hwrap_box_type = gtk_type_unique (GTK_TYPE_HWRAP_BOX,
&constrained_hwrap_box_info);
}
return constrained_hwrap_box_type;
}
static void
gimp_constrained_hwrap_box_class_init (GimpConstrainedHWrapBoxClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = GTK_OBJECT_CLASS (class);
widget_class = GTK_WIDGET_CLASS (class);
parent_class = gtk_type_class (GTK_TYPE_HWRAP_BOX);
widget_class->size_request = gimp_constrained_hwrap_box_size_request;
widget_class->size_allocate = gimp_constrained_hwrap_box_size_allocate;
}
static void
gimp_constrained_hwrap_box_init (GimpConstrainedHWrapBox *hwbox)
{
hwbox->rows = 1;
hwbox->columns = 1;
}
GtkWidget*
gimp_constrained_hwrap_box_new (gboolean homogeneous)
{
GimpConstrainedHWrapBox *hwbox;
hwbox = GIMP_CONSTRAINED_HWRAP_BOX (gtk_widget_new (GIMP_TYPE_CONSTRAINED_HWRAP_BOX, NULL));
GTK_WRAP_BOX (hwbox)->homogeneous = homogeneous ? TRUE : FALSE;
return GTK_WIDGET (hwbox);
}
static void
gimp_constrained_hwrap_box_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkWrapBox *wbox = GTK_WRAP_BOX (widget);
g_return_if_fail (requisition != NULL);
if (widget->parent &&
GTK_IS_VIEWPORT (widget->parent) &&
widget->parent->parent &&
GTK_IS_SCROLLED_WINDOW (widget->parent->parent) &&
wbox->children &&
wbox->children->widget)
{
GtkWidget *scrolled_win;
gint child_width;
gint child_height;
gint viewport_width;
gint columns;
gint rows;
scrolled_win = widget->parent->parent;
child_width = wbox->children->widget->requisition.width;
child_height = wbox->children->widget->requisition.height;
viewport_width =
(scrolled_win->allocation.width -
GTK_SCROLLED_WINDOW (scrolled_win)->vscrollbar->allocation.width -
GTK_SCROLLED_WINDOW_CLASS (GTK_OBJECT (scrolled_win)->klass)->scrollbar_spacing -
scrolled_win->style->klass->xthickness * 2);
columns =
(viewport_width + wbox->hspacing) / (child_width + wbox->hspacing);
columns = MAX (1, columns);
requisition->width = (child_width + wbox->hspacing) * columns;
rows = wbox->n_children / columns;
if (rows * columns < wbox->n_children)
rows++;
requisition->height = (child_height + wbox->vspacing) * rows;
GIMP_CONSTRAINED_HWRAP_BOX (wbox)->columns = columns;
GIMP_CONSTRAINED_HWRAP_BOX (wbox)->rows = rows;
}
else if (GTK_WIDGET_CLASS (parent_class)->size_request)
{
GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
GIMP_CONSTRAINED_HWRAP_BOX (wbox)->columns = 1;
GIMP_CONSTRAINED_HWRAP_BOX (wbox)->rows = 1;
}
}
static void
gimp_constrained_hwrap_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkWrapBox *wbox = GTK_WRAP_BOX (widget);
g_return_if_fail (allocation != NULL);
if (widget->parent &&
GTK_IS_VIEWPORT (widget->parent) &&
widget->parent->parent &&
GTK_IS_SCROLLED_WINDOW (widget->parent->parent) &&
wbox->children &&
wbox->children->widget)
{
GtkWidget *scrolled_win;
gint child_width;
gint child_height;
gint viewport_width;
gint columns;
gint rows;
scrolled_win = widget->parent->parent;
child_width = wbox->children->widget->requisition.width;
child_height = wbox->children->widget->requisition.height;
viewport_width =
(scrolled_win->allocation.width -
GTK_SCROLLED_WINDOW (scrolled_win)->vscrollbar->allocation.width -
GTK_SCROLLED_WINDOW_CLASS (GTK_OBJECT (scrolled_win)->klass)->scrollbar_spacing -
scrolled_win->style->klass->xthickness * 2);
allocation->width = viewport_width;
columns =
(viewport_width + wbox->hspacing) / (child_width + wbox->hspacing);
columns = MAX (1, columns);
rows = wbox->n_children / columns;
if (rows * columns < wbox->n_children)
rows++;
GIMP_CONSTRAINED_HWRAP_BOX (wbox)->columns = columns;
GIMP_CONSTRAINED_HWRAP_BOX (wbox)->rows = rows;
}
else
{
GIMP_CONSTRAINED_HWRAP_BOX (wbox)->columns = 1;
GIMP_CONSTRAINED_HWRAP_BOX (wbox)->rows = 1;
}
if (GTK_WIDGET_CLASS (parent_class)->size_allocate)
GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
}