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-rw-r--r--libgnomecanvas/gnome-canvas-clipgroup.c279
1 files changed, 0 insertions, 279 deletions
diff --git a/libgnomecanvas/gnome-canvas-clipgroup.c b/libgnomecanvas/gnome-canvas-clipgroup.c
deleted file mode 100644
index fae19fa60c..0000000000
--- a/libgnomecanvas/gnome-canvas-clipgroup.c
+++ /dev/null
@@ -1,279 +0,0 @@
-#define GNOME_CANVAS_CLIPGROUP_C
-
-/* Clipping group for GnomeCanvas
- *
- * GnomeCanvas is basically a port of the Tk toolkit's most excellent canvas widget. Tk is
- * copyrighted by the Regents of the University of California, Sun Microsystems, and other parties.
- *
- * Copyright (C) 1998,1999 The Free Software Foundation
- *
- * Author:
- * Lauris Kaplinski <lauris@ximian.com>
- */
-
-/* These includes are set up for standalone compile. If/when this codebase
- is integrated into libgnomeui, the includes will need to change. */
-
-#include <math.h>
-#include <string.h>
-
-#include <gtk/gtk.h>
-
-#include <libart_lgpl/art_misc.h>
-#include <libart_lgpl/art_rect.h>
-#include <libart_lgpl/art_vpath.h>
-#include <libart_lgpl/art_bpath.h>
-#include <libart_lgpl/art_vpath.h>
-#include <libart_lgpl/art_vpath_bpath.h>
-#include <libart_lgpl/art_svp.h>
-#include <libart_lgpl/art_svp_vpath.h>
-#include <libart_lgpl/art_rect_svp.h>
-#include <libart_lgpl/art_gray_svp.h>
-#include <libart_lgpl/art_svp_intersect.h>
-#include <libart_lgpl/art_svp_ops.h>
-
-#include "gnome-canvas.h"
-#include "gnome-canvas-util.h"
-#include "gnome-canvas-clipgroup.h"
-
-enum {
- PROP_0,
- PROP_PATH,
- PROP_WIND
-};
-
-static void gnome_canvas_clipgroup_class_init (GnomeCanvasClipgroupClass *klass);
-static void gnome_canvas_clipgroup_init (GnomeCanvasClipgroup *clipgroup);
-static void gnome_canvas_clipgroup_destroy (GnomeCanvasItem *object);
-static void gnome_canvas_clipgroup_set_property (GObject *object,
- guint param_id,
- const GValue *value,
- GParamSpec *pspec);
-static void gnome_canvas_clipgroup_get_property (GObject *object,
- guint param_id,
- GValue *value,
- GParamSpec *pspec);
-static void gnome_canvas_clipgroup_update (GnomeCanvasItem *item,
- gdouble *affine,
- ArtSVP *clip_path,
- gint flags);
-
-/*
- * Generic clipping stuff
- *
- * This is somewhat slow and memory-hungry - we add extra
- * composition, extra SVP render and allocate 65536
- * bytes for each clip level. It could be done more
- * efficently per-object basis - but to make clipping
- * universal, there is no alternative to double
- * buffering (although it should be done into RGBA
- * buffer by other method than ::render to make global
- * opacity possible).
- * Using art-render could possibly optimize that a bit,
- * although I am not sure.
- */
-
-static GnomeCanvasGroupClass *parent_class;
-
-GType
-gnome_canvas_clipgroup_get_type (void)
-{
- static GType clipgroup_type;
-
- if (!clipgroup_type) {
- const GTypeInfo object_info = {
- sizeof (GnomeCanvasClipgroupClass),
- (GBaseInitFunc) NULL,
- (GBaseFinalizeFunc) NULL,
- (GClassInitFunc) gnome_canvas_clipgroup_class_init,
- (GClassFinalizeFunc) NULL,
- NULL, /* class_data */
- sizeof (GnomeCanvasClipgroup),
- 0, /* n_preallocs */
- (GInstanceInitFunc) gnome_canvas_clipgroup_init,
- NULL /* value_table */
- };
-
- clipgroup_type = g_type_register_static (GNOME_TYPE_CANVAS_GROUP, "GnomeCanvasClipgroup",
- &object_info, 0);
- }
-
- return clipgroup_type;
-}
-
-static void
-gnome_canvas_clipgroup_class_init (GnomeCanvasClipgroupClass *klass)
-{
- GObjectClass *gobject_class;
- GnomeCanvasItemClass *item_class;
-
- gobject_class = (GObjectClass *) klass;
- item_class = (GnomeCanvasItemClass *) klass;
- parent_class = g_type_class_ref (GNOME_TYPE_CANVAS_GROUP);
-
- gobject_class->set_property = gnome_canvas_clipgroup_set_property;
- gobject_class->get_property = gnome_canvas_clipgroup_get_property;
- item_class->destroy = gnome_canvas_clipgroup_destroy;
- item_class->update = gnome_canvas_clipgroup_update;
-
- g_object_class_install_property (gobject_class,
- PROP_PATH,
- g_param_spec_pointer ("path", NULL, NULL,
- (G_PARAM_READABLE | G_PARAM_WRITABLE)));
- g_object_class_install_property (gobject_class,
- PROP_WIND,
- g_param_spec_uint ("wind", NULL, NULL,
- 0, G_MAXUINT, 0,
- (G_PARAM_READABLE | G_PARAM_WRITABLE)));
-}
-
-static void
-gnome_canvas_clipgroup_init (GnomeCanvasClipgroup *clipgroup)
-{
- clipgroup->path = NULL;
- clipgroup->wind = ART_WIND_RULE_NONZERO; /* default winding rule */
- clipgroup->svp = NULL;
-}
-
-static void
-gnome_canvas_clipgroup_destroy (GnomeCanvasItem *object)
-{
- GnomeCanvasClipgroup *clipgroup;
-
- g_return_if_fail (object != NULL);
- g_return_if_fail (GNOME_IS_CANVAS_CLIPGROUP (object));
-
- clipgroup = GNOME_CANVAS_CLIPGROUP (object);
-
- if (clipgroup->path) {
- gnome_canvas_path_def_unref (clipgroup->path);
- clipgroup->path = NULL;
- }
-
- if (clipgroup->svp) {
- art_svp_free (clipgroup->svp);
- clipgroup->svp = NULL;
- }
-
- if (GNOME_CANVAS_ITEM_CLASS (parent_class)->destroy)
- GNOME_CANVAS_ITEM_CLASS (parent_class)->destroy (object);
-}
-
-static void
-gnome_canvas_clipgroup_set_property (GObject *object,
- guint param_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- GnomeCanvasItem *item;
- GnomeCanvasClipgroup *cgroup;
- GnomeCanvasPathDef *gpp;
-
- item = GNOME_CANVAS_ITEM (object);
- cgroup = GNOME_CANVAS_CLIPGROUP (object);
-
- switch (param_id) {
- case PROP_PATH:
- gpp = g_value_get_pointer (value);
-
- if (cgroup->path) {
- gnome_canvas_path_def_unref (cgroup->path);
- cgroup->path = NULL;
- }
- if (gpp != NULL) {
- cgroup->path = gnome_canvas_path_def_closed_parts (gpp);
- }
-
- gnome_canvas_item_request_update (item);
- break;
-
- case PROP_WIND:
- cgroup->wind = g_value_get_uint (value);
- gnome_canvas_item_request_update (item);
- break;
-
- default:
- break;
- }
-}
-
-static void
-gnome_canvas_clipgroup_get_property (GObject *object,
- guint param_id,
- GValue *value,
- GParamSpec *pspec)
-{
- GnomeCanvasClipgroup * cgroup;
-
- cgroup = GNOME_CANVAS_CLIPGROUP (object);
-
- switch (param_id) {
- case PROP_PATH:
- g_value_set_pointer (value, cgroup->path);
- break;
-
- case PROP_WIND:
- g_value_set_uint (value, cgroup->wind);
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
- break;
- }
-}
-
-static void
-gnome_canvas_clipgroup_update (GnomeCanvasItem *item, gdouble *affine, ArtSVP *clip_path, gint flags)
-{
- GnomeCanvasClipgroup *clipgroup;
- ArtSvpWriter *swr;
- ArtBpath *bp;
- ArtBpath *bpath;
- ArtVpath *vpath;
- ArtSVP *svp, *svp1, *svp2;
-
- clipgroup = GNOME_CANVAS_CLIPGROUP (item);
-
- if (clipgroup->svp) {
- art_svp_free (clipgroup->svp);
- clipgroup->svp = NULL;
- }
-
- if (clipgroup->path) {
- bp = gnome_canvas_path_def_bpath (clipgroup->path);
- bpath = art_bpath_affine_transform (bp, affine);
-
- vpath = art_bez_path_to_vec (bpath, 0.25);
- art_free (bpath);
-
- svp1 = art_svp_from_vpath (vpath);
- art_free (vpath);
-
- swr = art_svp_writer_rewind_new (clipgroup->wind);
- art_svp_intersector (svp1, swr);
-
- svp2 = art_svp_writer_rewind_reap (swr);
- art_svp_free (svp1);
-
- if (clip_path != NULL) {
- svp = art_svp_intersect (svp2, clip_path);
- art_svp_free (svp2);
- } else {
- svp = svp2;
- }
-
- clipgroup->svp = svp;
- }
-
- if (GNOME_CANVAS_ITEM_CLASS (parent_class)->update)
- (GNOME_CANVAS_ITEM_CLASS (parent_class)->update) (item, affine, NULL, flags);
-
- if (clipgroup->svp) {
- ArtDRect cbox;
- art_drect_svp (&cbox, clipgroup->svp);
- item->x1 = MAX (item->x1, cbox.x0 - 1.0);
- item->y1 = MAX (item->y1, cbox.y0 - 1.0);
- item->x2 = MIN (item->x2, cbox.x1 + 1.0);
- item->y2 = MIN (item->y2, cbox.y1 + 1.0);
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 17:28:47 +0800