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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>
* Maximilian Albert <maximilian.albert@gmail.com>
*
* Copyright (C) 2001-2008 authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "document.h"
#include "sp-shape.h"
#include "knot.h"
#include "knotholder.h"
#include "rect-context.h"
#include "sp-rect.h"
#include "arc-context.h"
#include "sp-ellipse.h"
#include "star-context.h"
#include "sp-star.h"
#include "spiral-context.h"
#include "sp-spiral.h"
#include "sp-offset.h"
#include "box3d.h"
#include "sp-pattern.h"
#include "style.h"
#include "live_effects/lpeobject.h"
#include "desktop.h"
#include "display/sp-canvas.h"
#include "xml/repr.h" // for debugging only
#include <glibmm/i18n.h>
class SPDesktop;
KnotHolder::KnotHolder(SPDesktop *desktop, SPItem *item, SPKnotHolderReleasedFunc relhandler)
{
Inkscape::XML::Node *repr = SP_OBJECT(item)->repr;
if (!desktop || !item || !SP_IS_ITEM(item)) {
g_print ("Error! Throw an exception, please!\n");
}
this->desktop = desktop;
this->item = item;
g_object_ref(G_OBJECT(item)); // TODO: is this still needed after C++-ification?
this->released = relhandler;
this->repr = repr;
this->local_change = FALSE;
this->dragging = false;
}
KnotHolder::~KnotHolder() {
g_object_unref(G_OBJECT(item));
for(std::list<KnotHolderEntity *>::iterator i = entity.begin(); i != entity.end(); ++i) {
KnotHolderEntity* e = (*i);
if (e->isDeletable()) {
delete (*i);
} else {
// we must not delete the entity (since it's attached to an LPE parameter),
// but the handle should be destroyed
g_object_unref(e->knot);
}
(*i) = NULL;
}
entity.clear(); // is this necessary?
}
/**
* \param p In desktop coordinates.
*/
void
KnotHolder::update_knots()
{
Geom::Matrix const i2d(sp_item_i2d_affine(item));
for(std::list<KnotHolderEntity *>::iterator i = entity.begin(); i != entity.end(); ++i) {
KnotHolderEntity *e = *i;
e->update_knot();
}
}
void
KnotHolder::knot_clicked_handler(SPKnot *knot, guint state)
{
KnotHolder *knot_holder = this;
for(std::list<KnotHolderEntity *>::iterator i = knot_holder->entity.begin(); i != knot_holder->entity.end(); ++i) {
KnotHolderEntity *e = *i;
if (e->knot == knot) {
// no need to test whether knot_click exists since it's virtual now
e->knot_click(state);
break;
}
}
if (SP_IS_SHAPE(item)) {
sp_shape_set_shape(SP_SHAPE(item));
}
knot_holder->update_knots();
unsigned int object_verb = SP_VERB_NONE;
if (SP_IS_RECT(item))
object_verb = SP_VERB_CONTEXT_RECT;
else if (SP_IS_BOX3D(item))
object_verb = SP_VERB_CONTEXT_3DBOX;
else if (SP_IS_GENERICELLIPSE(item))
object_verb = SP_VERB_CONTEXT_ARC;
else if (SP_IS_STAR(item))
object_verb = SP_VERB_CONTEXT_STAR;
else if (SP_IS_SPIRAL(item))
object_verb = SP_VERB_CONTEXT_SPIRAL;
else if (SP_IS_OFFSET(item)) {
if (SP_OFFSET(item)->sourceHref)
object_verb = SP_VERB_SELECTION_LINKED_OFFSET;
else
object_verb = SP_VERB_SELECTION_DYNAMIC_OFFSET;
}
// for drag, this is done by ungrabbed_handler, but for click we must do it here
sp_document_done(SP_OBJECT_DOCUMENT(item), object_verb,
_("Change handle"));
}
void
KnotHolder::knot_moved_handler(SPKnot *knot, Geom::Point const &p, guint state)
{
if (this->dragging == false) {
this->dragging = true;
//sp_event_context_snap_window_open(desktop->canvas);
}
// this was a local change and the knotholder does not need to be recreated:
this->local_change = TRUE;
for(std::list<KnotHolderEntity *>::iterator i = this->entity.begin(); i != this->entity.end(); ++i) {
KnotHolderEntity *e = *i;
if (e->knot == knot) {
Geom::Point const q = p * sp_item_i2d_affine(item).inverse();
e->knot_set(q, e->knot->drag_origin * sp_item_i2d_affine(item).inverse(), state);
break;
}
}
if (SP_IS_SHAPE (item)) {
sp_shape_set_shape(SP_SHAPE (item));
}
this->update_knots();
}
void
KnotHolder::knot_ungrabbed_handler(SPKnot */*knot*/)
{
this->dragging = false;
//sp_event_context_snap_window_closed(desktop->canvas);
if (this->released) {
this->released(this->item);
} else {
SPObject *object = (SPObject *) this->item;
// Caution: this call involves a screen update, which may process events, and as a
// result the knotholder may be destructed. So, after the updateRepr, we cannot use any
// fields of this knotholder (such as this->item), but only values we have saved beforehand
// (such as object).
object->updateRepr();
/* do cleanup tasks (e.g., for LPE items write the parameter values
* that were changed by dragging the handle to SVG)
*/
if (SP_IS_LPE_ITEM(object)) {
// This writes all parameters to SVG. Is this sufficiently efficient or should we only
// write the ones that were changed?
Inkscape::LivePathEffect::Effect *lpe = sp_lpe_item_get_current_lpe(SP_LPE_ITEM(object));
if (lpe) {
LivePathEffectObject *lpeobj = lpe->getLPEObj();
SP_OBJECT(lpeobj)->updateRepr();
}
}
unsigned int object_verb = SP_VERB_NONE;
if (SP_IS_RECT(object))
object_verb = SP_VERB_CONTEXT_RECT;
else if (SP_IS_BOX3D(object))
object_verb = SP_VERB_CONTEXT_3DBOX;
else if (SP_IS_GENERICELLIPSE(object))
object_verb = SP_VERB_CONTEXT_ARC;
else if (SP_IS_STAR(object))
object_verb = SP_VERB_CONTEXT_STAR;
else if (SP_IS_SPIRAL(object))
object_verb = SP_VERB_CONTEXT_SPIRAL;
else if (SP_IS_OFFSET(object)) {
if (SP_OFFSET(object)->sourceHref)
object_verb = SP_VERB_SELECTION_LINKED_OFFSET;
else
object_verb = SP_VERB_SELECTION_DYNAMIC_OFFSET;
}
sp_document_done(SP_OBJECT_DOCUMENT (object), object_verb,
_("Move handle"));
}
}
void
KnotHolder::add(KnotHolderEntity *e)
{
entity.push_back(e);
}
void
KnotHolder::add_pattern_knotholder()
{
if ((SP_OBJECT(item)->style->fill.isPaintserver())
&& SP_IS_PATTERN(SP_STYLE_FILL_SERVER(SP_OBJECT(item)->style)))
{
PatternKnotHolderEntityXY *entity_xy = new PatternKnotHolderEntityXY();
PatternKnotHolderEntityAngle *entity_angle = new PatternKnotHolderEntityAngle();
PatternKnotHolderEntityScale *entity_scale = new PatternKnotHolderEntityScale();
entity_xy->create(desktop, item, this,
// TRANSLATORS: This refers to the pattern that's inside the object
_("<b>Move</b> the pattern fill inside the object"),
SP_KNOT_SHAPE_CROSS);
entity_scale->create(desktop, item, this,
_("<b>Scale</b> the pattern fill uniformly"),
SP_KNOT_SHAPE_SQUARE, SP_KNOT_MODE_XOR);
entity_angle->create(desktop, item, this,
_("<b>Rotate</b> the pattern fill; with <b>Ctrl</b> to snap angle"),
SP_KNOT_SHAPE_CIRCLE, SP_KNOT_MODE_XOR);
entity.push_back(entity_xy);
entity.push_back(entity_angle);
entity.push_back(entity_scale);
}
}
/*
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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