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#define __KNOT_HOLDER_C__
/*
* Container for SPKnot visual handles
*
* Authors:
* Mitsuru Oka <oka326@parkcity.ne.jp>
* bulia byak <buliabyak@users.sf.net>
*
* Copyright (C) 2001-2005 authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#define noKNOT_HOLDER_DEBUG
#include "document.h"
#include "sp-shape.h"
#include "knot.h"
#include "knotholder.h"
#include "knot-holder-entity.h"
#include <libnr/nr-matrix-div.h>
class SPDesktop;
static void knot_clicked_handler (SPKnot *knot, guint state, gpointer data);
static void knot_moved_handler(SPKnot *knot, NR::Point const *p, guint state, gpointer data);
static void knot_ungrabbed_handler (SPKnot *knot, unsigned int state, SPKnotHolder *kh);
#ifdef KNOT_HOLDER_DEBUG
static void sp_knot_holder_debug(GtkObject *object, gpointer data)
{
g_print("sp-knot-holder-debug: [type=%s] [data=%s]\n", gtk_type_name(GTK_OBJECT_TYPE(object)), (const gchar *) data);
}
#endif
SPKnotHolder *sp_knot_holder_new(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler)
{
Inkscape::XML::Node *repr = SP_OBJECT(item)->repr;
g_return_val_if_fail(desktop != NULL, NULL);
g_return_val_if_fail(item != NULL, NULL);
g_return_val_if_fail(SP_IS_ITEM(item), NULL);
SPKnotHolder *knot_holder = g_new(SPKnotHolder, 1);
knot_holder->desktop = desktop;
knot_holder->item = item;
g_object_ref(G_OBJECT(item));
knot_holder->entity = NULL;
knot_holder->released = relhandler;
knot_holder->repr = repr;
knot_holder->local_change = FALSE;
#ifdef KNOT_HOLDER_DEBUG
g_signal_connect(G_OBJECT(desktop), "destroy", sp_knot_holder_debug, (gpointer) "SPKnotHolder::item");
#endif
return knot_holder;
}
void sp_knot_holder_destroy(SPKnotHolder *kh)
{
if (kh) {
g_object_unref(G_OBJECT(kh->item));
while (kh->entity) {
SPKnotHolderEntity *e = (SPKnotHolderEntity *) kh->entity->data;
/* unref should call destroy */
g_object_unref(G_OBJECT(e->knot));
g_free(e);
kh->entity = g_slist_remove(kh->entity, e);
}
g_free(kh);
}
}
void sp_knot_holder_add(
SPKnotHolder *knot_holder,
SPKnotHolderSetFunc knot_set,
SPKnotHolderGetFunc knot_get,
void (* knot_click) (SPItem *item, guint state),
const gchar *tip
)
{
sp_knot_holder_add_full(knot_holder, knot_set, knot_get, knot_click, SP_KNOT_SHAPE_DIAMOND, SP_KNOT_MODE_XOR, tip);
}
void sp_knot_holder_add_full(
SPKnotHolder *knot_holder,
SPKnotHolderSetFunc knot_set,
SPKnotHolderGetFunc knot_get,
void (* knot_click) (SPItem *item, guint state),
SPKnotShapeType shape,
SPKnotModeType mode,
const gchar *tip
)
{
g_return_if_fail(knot_holder != NULL);
g_return_if_fail(knot_set != NULL);
g_return_if_fail(knot_get != NULL);
SPItem *item = SP_ITEM(knot_holder->item);
/* create new SPKnotHolderEntry */
SPKnotHolderEntity *e = g_new(SPKnotHolderEntity, 1);
e->knot = sp_knot_new(knot_holder->desktop, tip);
e->knot_set = knot_set;
e->knot_get = knot_get;
if (knot_click) {
e->knot_click = knot_click;
} else {
e->knot_click = NULL;
}
g_object_set(G_OBJECT (e->knot->item), "shape", shape, NULL);
g_object_set(G_OBJECT (e->knot->item), "mode", mode, NULL);
// TODO: add a color argument
//e->knot->fill [SP_KNOT_STATE_NORMAL] = 0x00ff0000;
//g_object_set (G_OBJECT (e->knot->item), "fill_color", 0x00ff0000, NULL);
knot_holder->entity = g_slist_append(knot_holder->entity, e);
/* Move to current point. */
NR::Point dp = e->knot_get(item) * sp_item_i2d_affine(item);
sp_knot_set_position(e->knot, &dp, SP_KNOT_STATE_NORMAL);
e->handler_id = g_signal_connect(G_OBJECT(e->knot), "moved", G_CALLBACK(knot_moved_handler), knot_holder);
g_signal_connect(G_OBJECT(e->knot), "clicked", G_CALLBACK(knot_clicked_handler), knot_holder);
g_signal_connect(G_OBJECT(e->knot), "ungrabbed", G_CALLBACK(knot_ungrabbed_handler), knot_holder);
#ifdef KNOT_HOLDER_DEBUG
g_signal_connect(ob, "destroy", sp_knot_holder_debug, "SPKnotHolder::knot");
#endif
sp_knot_show(e->knot);
}
/**
* \param p In desktop coordinates.
*/
static void knotholder_update_knots(SPKnotHolder *knot_holder, SPItem *item)
{
NR::Matrix const i2d(sp_item_i2d_affine(item));
for (GSList *el = knot_holder->entity; el; el = el->next) {
SPKnotHolderEntity *e = (SPKnotHolderEntity *) el->data;
GObject *kob = G_OBJECT(e->knot);
NR::Point dp( e->knot_get(item) * i2d );
g_signal_handler_block(kob, e->handler_id);
sp_knot_set_position(e->knot, &dp, SP_KNOT_STATE_NORMAL);
g_signal_handler_unblock(kob, e->handler_id);
}
}
static void knot_clicked_handler(SPKnot *knot, guint state, gpointer data)
{
SPKnotHolder *knot_holder = (SPKnotHolder *) data;
SPItem *item = SP_ITEM (knot_holder->item);
for (GSList *el = knot_holder->entity; el; el = el->next) {
SPKnotHolderEntity *e = (SPKnotHolderEntity *) el->data;
if (e->knot == knot) {
if (e->knot_click) {
e->knot_click(item, state);
}
break;
}
}
if (SP_IS_SHAPE(item)) {
sp_shape_set_shape(SP_SHAPE(item));
}
knotholder_update_knots(knot_holder, item);
// for drag, this is done by ungrabbed_handler, but for click we must do it here
sp_document_done(SP_OBJECT_DOCUMENT(knot_holder->item));
}
static void knot_moved_handler(SPKnot *knot, NR::Point const *p, guint state, gpointer data)
{
SPKnotHolder *knot_holder = (SPKnotHolder *) data;
SPItem *item = SP_ITEM (knot_holder->item);
// this was a local change and the knotholder does not need to be recreated:
knot_holder->local_change = TRUE;
for (GSList *el = knot_holder->entity; el; el = el->next) {
SPKnotHolderEntity *e = (SPKnotHolderEntity *) el->data;
if (e->knot == knot) {
NR::Point const q = *p / sp_item_i2d_affine(item);
e->knot_set(item, q, e->knot->drag_origin / sp_item_i2d_affine(item), state);
break;
}
}
if (SP_IS_SHAPE (item)) {
sp_shape_set_shape(SP_SHAPE (item));
}
knotholder_update_knots(knot_holder, item);
}
static void knot_ungrabbed_handler(SPKnot *knot, unsigned int state, SPKnotHolder *kh)
{
if (kh->released) {
kh->released(kh->item);
} else {
SPObject *object = (SPObject *) kh->item;
object->updateRepr(object->repr, SP_OBJECT_WRITE_EXT);
sp_document_done(SP_OBJECT_DOCUMENT (object));
}
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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