moving trunk for module inkscape

(bzr r1)

1 files changed, 375 insertions, 0 deletions

diff --git a/src/sp-mask.cpp b/src/sp-mask.cpp
new file mode 100644
index 000000000..1f2d531b7
--- /dev/null
+++ b/src/sp-mask.cpp
@@ -0,0 +1,375 @@
+#define __SP_MASK_C__
+
+/*
+ * SVG <mask> implementation
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 2003 authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+
+#include "display/nr-arena.h"
+#include "display/nr-arena-group.h"
+#include <xml/repr.h>
+
+#include "enums.h"
+#include "attributes.h"
+#include "document.h"
+#include "sp-item.h"
+
+#include "sp-mask.h"
+
+struct SPMaskView {
+	SPMaskView *next;
+	unsigned int key;
+	NRArenaItem *arenaitem;
+	NRRect bbox;
+};
+
+static void sp_mask_class_init (SPMaskClass *klass);
+static void sp_mask_init (SPMask *mask);
+
+static void sp_mask_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
+static void sp_mask_release (SPObject * object);
+static void sp_mask_set (SPObject *object, unsigned int key, const gchar *value);
+static void sp_mask_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
+static void sp_mask_update (SPObject *object, SPCtx *ctx, guint flags);
+static void sp_mask_modified (SPObject *object, guint flags);
+static Inkscape::XML::Node *sp_mask_write (SPObject *object, Inkscape::XML::Node *repr, guint flags);
+
+SPMaskView *sp_mask_view_new_prepend (SPMaskView *list, unsigned int key, NRArenaItem *arenaitem);
+SPMaskView *sp_mask_view_list_remove (SPMaskView *list, SPMaskView *view);
+
+static SPObjectGroupClass *parent_class;
+
+GType
+sp_mask_get_type (void)
+{
+	static GType type = 0;
+	if (!type) {
+		GTypeInfo info = {
+			sizeof (SPMaskClass),
+			NULL, NULL,
+			(GClassInitFunc) sp_mask_class_init,
+			NULL, NULL,
+			sizeof (SPMask),
+			16,
+			(GInstanceInitFunc) sp_mask_init,
+			NULL,	/* value_table */
+		};
+		type = g_type_register_static (SP_TYPE_OBJECTGROUP, "SPMask", &info, (GTypeFlags)0);
+	}
+	return type;
+}
+
+static void
+sp_mask_class_init (SPMaskClass *klass)
+{
+	parent_class = (SPObjectGroupClass*) g_type_class_ref (SP_TYPE_OBJECTGROUP);
+
+	SPObjectClass *sp_object_class = (SPObjectClass *) klass;
+	sp_object_class->build = sp_mask_build;
+	sp_object_class->release = sp_mask_release;
+	sp_object_class->set = sp_mask_set;
+	sp_object_class->child_added = sp_mask_child_added;
+	sp_object_class->update = sp_mask_update;
+	sp_object_class->modified = sp_mask_modified;
+	sp_object_class->write = sp_mask_write;
+}
+
+static void
+sp_mask_init (SPMask *mask)
+{
+	mask->maskUnits_set = FALSE;
+	mask->maskUnits = SP_CONTENT_UNITS_OBJECTBOUNDINGBOX;
+
+	mask->maskUnits_set = FALSE;
+	mask->maskUnits = SP_CONTENT_UNITS_USERSPACEONUSE;
+
+	mask->display = NULL;
+}
+
+static void
+sp_mask_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
+{
+	if (((SPObjectClass *) parent_class)->build) {
+		((SPObjectClass *) parent_class)->build (object, document, repr);
+	}
+
+	sp_object_read_attr (object, "maskUnits");
+	sp_object_read_attr (object, "maskContentUnits");
+
+	/* Register ourselves */
+	sp_document_add_resource (document, "mask", object);
+}
+
+static void
+sp_mask_release (SPObject * object)
+{
+	if (SP_OBJECT_DOCUMENT (object)) {
+		/* Unregister ourselves */
+		sp_document_remove_resource (SP_OBJECT_DOCUMENT (object), "mask", object);
+	}
+
+	SPMask *cp = SP_MASK (object);
+	while (cp->display) {
+		/* We simply unref and let item to manage this in handler */
+		cp->display = sp_mask_view_list_remove (cp->display, cp->display);
+	}
+
+	if (((SPObjectClass *) (parent_class))->release) {
+		((SPObjectClass *) parent_class)->release (object);
+	}
+}
+
+static void
+sp_mask_set (SPObject *object, unsigned int key, const gchar *value)
+{
+	SPMask *mask = SP_MASK (object);
+
+	switch (key) {
+	case SP_ATTR_MASKUNITS:
+		mask->maskUnits = SP_CONTENT_UNITS_OBJECTBOUNDINGBOX;
+		mask->maskUnits_set = FALSE;
+		if (value) {
+			if (!strcmp (value, "userSpaceOnUse")) {
+				mask->maskUnits = SP_CONTENT_UNITS_USERSPACEONUSE;
+				mask->maskUnits_set = TRUE;
+			} else if (!strcmp (value, "objectBoundingBox")) {
+				mask->maskUnits_set = TRUE;
+			}
+		}
+		object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+		break;
+	case SP_ATTR_MASKCONTENTUNITS:
+		mask->maskContentUnits = SP_CONTENT_UNITS_USERSPACEONUSE;
+		mask->maskContentUnits_set = FALSE;
+		if (value) {
+			if (!strcmp (value, "userSpaceOnUse")) {
+				mask->maskContentUnits_set = TRUE;
+			} else if (!strcmp (value, "objectBoundingBox")) {
+				mask->maskContentUnits = SP_CONTENT_UNITS_OBJECTBOUNDINGBOX;
+				mask->maskContentUnits_set = TRUE;
+			}
+		}
+		object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+		break;
+	default:
+		if (((SPObjectClass *) parent_class)->set)
+			((SPObjectClass *) parent_class)->set (object, key, value);
+		break;
+	}
+}
+
+static void
+sp_mask_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
+{
+	/* Invoke SPObjectGroup implementation */
+	((SPObjectClass *) (parent_class))->child_added (object, child, ref);
+
+	/* Show new object */
+	SPObject *ochild = SP_OBJECT_DOCUMENT (object)->getObjectByRepr(child);
+	if (SP_IS_ITEM (ochild)) {
+		SPMask *cp = SP_MASK (object);
+		for (SPMaskView *v = cp->display; v != NULL; v = v->next) {
+			NRArenaItem *ac = sp_item_invoke_show (SP_ITEM (ochild),
+							       NR_ARENA_ITEM_ARENA (v->arenaitem),
+							       v->key,
+							       SP_ITEM_REFERENCE_FLAGS);
+			if (ac) {
+				nr_arena_item_add_child (v->arenaitem, ac, NULL);
+				nr_arena_item_unref (ac);
+			}
+		}
+	}
+}
+
+static void
+sp_mask_update (SPObject *object, SPCtx *ctx, guint flags)
+{
+	if (flags & SP_OBJECT_MODIFIED_FLAG) {
+		flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+	}
+	
+	flags &= SP_OBJECT_MODIFIED_CASCADE;
+
+	SPObjectGroup *og = SP_OBJECTGROUP (object);
+	GSList *l = NULL;
+	for (SPObject *child = sp_object_first_child(SP_OBJECT(og)); child != NULL; child = SP_OBJECT_NEXT(child)) {
+		g_object_ref (G_OBJECT (child));
+		l = g_slist_prepend (l, child);
+	}
+	l = g_slist_reverse (l);
+	while (l) {
+		SPObject *child = SP_OBJECT (l->data);
+		l = g_slist_remove (l, child);
+		if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+			child->updateDisplay(ctx, flags);
+		}
+		g_object_unref (G_OBJECT (child));
+	}
+
+	SPMask *mask = SP_MASK (object);
+	for (SPMaskView *v = mask->display; v != NULL; v = v->next) {
+		if (mask->maskContentUnits == SP_CONTENT_UNITS_OBJECTBOUNDINGBOX) {
+			NRMatrix t;
+			nr_matrix_set_scale (&t, v->bbox.x1 - v->bbox.x0, v->bbox.y1 - v->bbox.y0);
+			t.c[4] = v->bbox.x0;
+			t.c[5] = v->bbox.y0;
+			nr_arena_group_set_child_transform (NR_ARENA_GROUP (v->arenaitem), &t);
+		} else {
+			nr_arena_group_set_child_transform (NR_ARENA_GROUP (v->arenaitem), NULL);
+		}
+	}
+}
+
+static void
+sp_mask_modified (SPObject *object, guint flags)
+{
+	if (flags & SP_OBJECT_MODIFIED_FLAG) {
+		flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+	}
+	
+	flags &= SP_OBJECT_MODIFIED_CASCADE;
+
+	SPObjectGroup *og = SP_OBJECTGROUP (object);
+	GSList *l = NULL;
+	for (SPObject *child = sp_object_first_child(SP_OBJECT(og)); child != NULL; child = SP_OBJECT_NEXT(child)) {
+		g_object_ref (G_OBJECT (child));
+		l = g_slist_prepend (l, child);
+	}
+	l = g_slist_reverse (l);
+	while (l) {
+		SPObject *child = SP_OBJECT (l->data);
+		l = g_slist_remove (l, child);
+		if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+			child->emitModified(flags);
+		}
+		g_object_unref (G_OBJECT (child));
+	}
+}
+
+static Inkscape::XML::Node *
+sp_mask_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
+{
+	if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
+		repr = sp_repr_new ("svg:mask");
+	}
+
+	if (((SPObjectClass *) (parent_class))->write)
+		((SPObjectClass *) (parent_class))->write (object, repr, flags);
+
+	return repr;
+}
+
+NRArenaItem *
+sp_mask_show (SPMask *mask, NRArena *arena, unsigned int key)
+{
+	g_return_val_if_fail (mask != NULL, NULL);
+	g_return_val_if_fail (SP_IS_MASK (mask), NULL);
+	g_return_val_if_fail (arena != NULL, NULL);
+	g_return_val_if_fail (NR_IS_ARENA (arena), NULL);
+
+	NRArenaItem *ai = NRArenaGroup::create(arena);
+	mask->display = sp_mask_view_new_prepend (mask->display, key, ai);
+
+	for (SPObject *child = sp_object_first_child(SP_OBJECT(mask)) ; child != NULL; child = SP_OBJECT_NEXT(child)) {
+		if (SP_IS_ITEM (child)) {
+			NRArenaItem *ac = sp_item_invoke_show (SP_ITEM (child), arena, key, SP_ITEM_REFERENCE_FLAGS);
+			if (ac) {
+				/* The order is not important in mask */
+				nr_arena_item_add_child (ai, ac, NULL);
+				nr_arena_item_unref (ac);
+			}
+		}
+	}
+
+	if (mask->maskContentUnits == SP_CONTENT_UNITS_OBJECTBOUNDINGBOX) {
+		NRMatrix t;
+		nr_matrix_set_scale (&t, mask->display->bbox.x1 - mask->display->bbox.x0, mask->display->bbox.y1 - mask->display->bbox.y0);
+		t.c[4] = mask->display->bbox.x0;
+		t.c[5] = mask->display->bbox.y0;
+		nr_arena_group_set_child_transform (NR_ARENA_GROUP (ai), &t);
+	}
+
+	return ai;
+}
+
+void
+sp_mask_hide (SPMask *cp, unsigned int key)
+{
+	g_return_if_fail (cp != NULL);
+	g_return_if_fail (SP_IS_MASK (cp));
+
+	for (SPObject *child = sp_object_first_child(SP_OBJECT(cp)); child != NULL; child = SP_OBJECT_NEXT(child)) {
+		if (SP_IS_ITEM (child)) {
+			sp_item_invoke_hide (SP_ITEM (child), key);
+		}
+	}
+
+	for (SPMaskView *v = cp->display; v != NULL; v = v->next) {
+		if (v->key == key) {
+			/* We simply unref and let item to manage this in handler */
+			cp->display = sp_mask_view_list_remove (cp->display, v);
+			return;
+		}
+	}
+
+	g_assert_not_reached ();
+}
+
+void
+sp_mask_set_bbox (SPMask *mask, unsigned int key, NRRect *bbox)
+{
+	for (SPMaskView *v = mask->display; v != NULL; v = v->next) {
+		if (v->key == key) {
+			if (!NR_DF_TEST_CLOSE (v->bbox.x0, bbox->x0, NR_EPSILON) ||
+			    !NR_DF_TEST_CLOSE (v->bbox.y0, bbox->y0, NR_EPSILON) ||
+			    !NR_DF_TEST_CLOSE (v->bbox.x1, bbox->x1, NR_EPSILON) ||
+			    !NR_DF_TEST_CLOSE (v->bbox.y1, bbox->y1, NR_EPSILON)) {
+				v->bbox = *bbox;
+				SP_OBJECT(mask)->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+			}
+			break;
+		}
+	}
+}
+
+/* Mask views */
+
+SPMaskView *
+sp_mask_view_new_prepend (SPMaskView *list, unsigned int key, NRArenaItem *arenaitem)
+{
+	SPMaskView *new_mask_view = g_new (SPMaskView, 1);
+
+	new_mask_view->next = list;
+	new_mask_view->key = key;
+	new_mask_view->arenaitem = nr_arena_item_ref(arenaitem);
+	new_mask_view->bbox.x0 = new_mask_view->bbox.x1 = 0.0;
+	new_mask_view->bbox.y0 = new_mask_view->bbox.y1 = 0.0;
+
+	return new_mask_view;
+}
+
+SPMaskView *
+sp_mask_view_list_remove (SPMaskView *list, SPMaskView *view)
+{
+	if (view == list) {
+		list = list->next;
+	} else {
+		SPMaskView *prev;
+		prev = list;
+		while (prev->next != view) prev = prev->next;
+		prev->next = view->next;
+	}
+
+	nr_arena_item_unref (view->arenaitem);
+	g_free (view);
+
+	return list;
+}
+