mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-11 11:20:12 +00:00
322 lines
7.3 KiB
C
322 lines
7.3 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
* 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 <X11/Xlib.h>
|
|
#include <X11/Xutil.h>
|
|
#include "gdk.h"
|
|
#include "gdkprivate.h"
|
|
|
|
|
|
|
|
|
|
GdkRegion*
|
|
gdk_region_new (void)
|
|
{
|
|
GdkRegionPrivate *private;
|
|
GdkRegion *region;
|
|
Region xregion;
|
|
|
|
xregion = XCreateRegion();
|
|
private = g_new (GdkRegionPrivate, 1);
|
|
private->xregion = xregion;
|
|
region = (GdkRegion*) private;
|
|
region->user_data = NULL;
|
|
|
|
return region;
|
|
}
|
|
|
|
void
|
|
gdk_region_destroy (GdkRegion *region)
|
|
{
|
|
GdkRegionPrivate *private;
|
|
|
|
g_return_if_fail (region != NULL);
|
|
|
|
private = (GdkRegionPrivate *) region;
|
|
XDestroyRegion (private->xregion);
|
|
|
|
g_free (private);
|
|
}
|
|
|
|
gboolean
|
|
gdk_region_empty (GdkRegion *region)
|
|
{
|
|
GdkRegionPrivate *private;
|
|
|
|
g_return_val_if_fail (region != NULL, 0);
|
|
|
|
private = (GdkRegionPrivate *) region;
|
|
|
|
return XEmptyRegion (private->xregion);
|
|
}
|
|
|
|
gboolean
|
|
gdk_region_equal (GdkRegion *region1,
|
|
GdkRegion *region2)
|
|
{
|
|
GdkRegionPrivate *private1;
|
|
GdkRegionPrivate *private2;
|
|
|
|
g_return_val_if_fail (region1 != NULL, 0);
|
|
g_return_val_if_fail (region2 != NULL, 0);
|
|
|
|
private1 = (GdkRegionPrivate *) region1;
|
|
private2 = (GdkRegionPrivate *) region2;
|
|
|
|
return XEqualRegion (private1->xregion, private2->xregion);
|
|
}
|
|
|
|
void
|
|
gdk_region_get_clipbox(GdkRegion *region,
|
|
GdkRectangle *rectangle)
|
|
{
|
|
GdkRegionPrivate *rp;
|
|
XRectangle r;
|
|
|
|
g_return_if_fail(region != NULL);
|
|
g_return_if_fail(rectangle != NULL);
|
|
|
|
rp = (GdkRegionPrivate *)region;
|
|
XClipBox(rp->xregion, &r);
|
|
|
|
rectangle->x = r.x;
|
|
rectangle->y = r.y;
|
|
rectangle->width = r.width;
|
|
rectangle->height = r.height;
|
|
}
|
|
|
|
gboolean
|
|
gdk_region_point_in (GdkRegion *region,
|
|
gint x,
|
|
gint y)
|
|
{
|
|
GdkRegionPrivate *private;
|
|
|
|
g_return_val_if_fail (region != NULL, 0);
|
|
|
|
private = (GdkRegionPrivate *) region;
|
|
|
|
return XPointInRegion (private->xregion, x, y);
|
|
}
|
|
|
|
GdkOverlapType
|
|
gdk_region_rect_in (GdkRegion *region,
|
|
GdkRectangle *rect)
|
|
{
|
|
GdkRegionPrivate *private;
|
|
int res;
|
|
|
|
g_return_val_if_fail (region != NULL, 0);
|
|
|
|
private = (GdkRegionPrivate *) region;
|
|
|
|
res = XRectInRegion (private->xregion, rect->x, rect->y, rect->width, rect->height);
|
|
|
|
switch (res)
|
|
{
|
|
case RectangleIn: return GDK_OVERLAP_RECTANGLE_IN;
|
|
case RectangleOut: return GDK_OVERLAP_RECTANGLE_OUT;
|
|
case RectanglePart: return GDK_OVERLAP_RECTANGLE_PART;
|
|
}
|
|
|
|
return GDK_OVERLAP_RECTANGLE_OUT; /*what else ? */
|
|
}
|
|
|
|
GdkRegion *
|
|
gdk_region_polygon (GdkPoint *points,
|
|
gint npoints,
|
|
GdkFillRule fill_rule)
|
|
{
|
|
GdkRegionPrivate *private;
|
|
GdkRegion *region;
|
|
Region xregion;
|
|
gint xfill_rule = EvenOddRule;
|
|
|
|
g_return_val_if_fail (points != NULL, NULL);
|
|
g_return_val_if_fail (npoints != 0, NULL); /* maybe we should check for at least three points */
|
|
|
|
switch (fill_rule)
|
|
{
|
|
case GDK_EVEN_ODD_RULE:
|
|
xfill_rule = EvenOddRule;
|
|
break;
|
|
|
|
case GDK_WINDING_RULE:
|
|
xfill_rule = WindingRule;
|
|
break;
|
|
}
|
|
|
|
xregion = XPolygonRegion ((XPoint *) points, npoints, xfill_rule);
|
|
private = g_new (GdkRegionPrivate, 1);
|
|
private->xregion = xregion;
|
|
region = (GdkRegion *) private;
|
|
region->user_data = NULL;
|
|
|
|
return region;
|
|
}
|
|
|
|
void
|
|
gdk_region_offset (GdkRegion *region,
|
|
gint dx,
|
|
gint dy)
|
|
{
|
|
GdkRegionPrivate *private;
|
|
|
|
g_return_if_fail (region != NULL);
|
|
|
|
private = (GdkRegionPrivate *) region;
|
|
|
|
XOffsetRegion (private->xregion, dx, dy);
|
|
}
|
|
|
|
void
|
|
gdk_region_shrink (GdkRegion *region,
|
|
gint dx,
|
|
gint dy)
|
|
{
|
|
GdkRegionPrivate *private;
|
|
|
|
g_return_if_fail (region != NULL);
|
|
|
|
private = (GdkRegionPrivate *) region;
|
|
|
|
XShrinkRegion (private->xregion, dx, dy);
|
|
}
|
|
|
|
GdkRegion*
|
|
gdk_region_union_with_rect (GdkRegion *region,
|
|
GdkRectangle *rect)
|
|
{
|
|
GdkRegionPrivate *private;
|
|
GdkRegion *res;
|
|
GdkRegionPrivate *res_private;
|
|
XRectangle xrect;
|
|
|
|
g_return_val_if_fail (region != NULL, NULL);
|
|
|
|
private = (GdkRegionPrivate *) region;
|
|
|
|
xrect.x = rect->x;
|
|
xrect.y = rect->y;
|
|
xrect.width = rect->width;
|
|
xrect.height = rect->height;
|
|
|
|
res = gdk_region_new ();
|
|
res_private = (GdkRegionPrivate *) res;
|
|
|
|
XUnionRectWithRegion (&xrect, private->xregion, res_private->xregion);
|
|
|
|
return res;
|
|
}
|
|
|
|
GdkRegion*
|
|
gdk_regions_intersect (GdkRegion *source1,
|
|
GdkRegion *source2)
|
|
{
|
|
GdkRegionPrivate *private1;
|
|
GdkRegionPrivate *private2;
|
|
GdkRegion *res;
|
|
GdkRegionPrivate *res_private;
|
|
|
|
g_return_val_if_fail (source1 != NULL, NULL);
|
|
g_return_val_if_fail (source2 != NULL, NULL);
|
|
|
|
private1 = (GdkRegionPrivate *) source1;
|
|
private2 = (GdkRegionPrivate *) source2;
|
|
|
|
res = gdk_region_new ();
|
|
res_private = (GdkRegionPrivate *) res;
|
|
|
|
XIntersectRegion (private1->xregion, private2->xregion, res_private->xregion);
|
|
|
|
return res;
|
|
}
|
|
|
|
GdkRegion*
|
|
gdk_regions_union (GdkRegion *source1,
|
|
GdkRegion *source2)
|
|
{
|
|
GdkRegionPrivate *private1;
|
|
GdkRegionPrivate *private2;
|
|
GdkRegion *res;
|
|
GdkRegionPrivate *res_private;
|
|
|
|
g_return_val_if_fail (source1 != NULL, NULL);
|
|
g_return_val_if_fail (source2 != NULL, NULL);
|
|
|
|
private1 = (GdkRegionPrivate *) source1;
|
|
private2 = (GdkRegionPrivate *) source2;
|
|
|
|
res = gdk_region_new ();
|
|
res_private = (GdkRegionPrivate *) res;
|
|
|
|
XUnionRegion (private1->xregion, private2->xregion, res_private->xregion);
|
|
|
|
return res;
|
|
}
|
|
|
|
GdkRegion*
|
|
gdk_regions_subtract (GdkRegion *source1,
|
|
GdkRegion *source2)
|
|
{
|
|
GdkRegionPrivate *private1;
|
|
GdkRegionPrivate *private2;
|
|
GdkRegion *res;
|
|
GdkRegionPrivate *res_private;
|
|
|
|
g_return_val_if_fail (source1 != NULL, NULL);
|
|
g_return_val_if_fail (source2 != NULL, NULL);
|
|
|
|
private1 = (GdkRegionPrivate *) source1;
|
|
private2 = (GdkRegionPrivate *) source2;
|
|
|
|
res = gdk_region_new ();
|
|
res_private = (GdkRegionPrivate *) res;
|
|
|
|
XSubtractRegion (private1->xregion, private2->xregion, res_private->xregion);
|
|
|
|
return res;
|
|
}
|
|
|
|
GdkRegion*
|
|
gdk_regions_xor (GdkRegion *source1,
|
|
GdkRegion *source2)
|
|
{
|
|
GdkRegionPrivate *private1;
|
|
GdkRegionPrivate *private2;
|
|
GdkRegion *res;
|
|
GdkRegionPrivate *res_private;
|
|
|
|
g_return_val_if_fail (source1 != NULL, NULL);
|
|
g_return_val_if_fail (source2 != NULL, NULL);
|
|
|
|
private1 = (GdkRegionPrivate *) source1;
|
|
private2 = (GdkRegionPrivate *) source2;
|
|
|
|
res = gdk_region_new ();
|
|
res_private = (GdkRegionPrivate *) res;
|
|
|
|
XXorRegion (private1->xregion, private2->xregion, res_private->xregion);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
|