#define __SP_PATH_CHEMISTRY_C__

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <cstring>

#include <string>

#include "xml/repr.h"

#include "svg/svg.h"

#include "display/curve.h"

#include <glib/gmem.h>

#include <glibmm/i18n.h>

#include "sp-path.h"

#include "sp-text.h"

#include "sp-flowtext.h"

#include "libnr/nr-path.h"

#include "text-editing.h"

#include "style.h"

#include "inkscape.h"

#include "desktop.h"

#include "document.h"

#include "message-stack.h"

#include "selection.h"

#include "desktop-handles.h"

#include "box3d.h"

#include "path-chemistry.h"

static void sp_selected_path_to_curves0(gboolean do_document_done, guint32 text_grouping_policy);

static bool sp_item_list_to_curves(const GSList *items, GSList **selected, GSList **to_select);

enum {

/* Not used yet. This is the placeholder of Lauris's idea. */

SP_TOCURVE_INTERACTIVE = 1 << 0,

SP_TOCURVE_GROUPING_BY_WORD = 1 << 1,

SP_TOCURVE_GROUPING_BY_LINE = 1 << 2,

SP_TOCURVE_GROUPING_BY_WHOLE = 1 << 3

};

sp_selected_path_combine(void)

{

SPDesktop *desktop = SP_ACTIVE_DESKTOP;

Inkscape::Selection *selection = sp_desktop_selection(desktop);

if (g_slist_length((GSList *) selection->itemList()) < 2) {

sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>at least two objects</b> to combine."));

return;

}

desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Combining paths..."));

// set "busy" cursor

desktop->setWaitingCursor();

sp_selected_path_to_curves0(FALSE, 0);

GSList *items = g_slist_copy((GSList *) selection->itemList());

items = g_slist_sort(items, (GCompareFunc) sp_item_repr_compare_position);

items = g_slist_reverse(items);

// remember the position, id and style of the topmost path, they will be assigned to the combined one

gint position = 0;

char const *id = NULL;

gchar *style = NULL;

SPCurve* curve = 0;

bool did = false;

SPItem *first = NULL;

Inkscape::XML::Node *parent = NULL;

for (GSList *i = items; i != NULL; i = i->next) { // going from top to bottom

SPItem *item = (SPItem *) i->data;

if (!SP_IS_PATH(item))

continue;

did = true;

SPCurve *c = sp_shape_get_curve(SP_SHAPE(item));

if (first == NULL) { // this is the topmost path

first = item;

parent = SP_OBJECT_REPR(first)->parent();

position = SP_OBJECT_REPR(first)->position();

id = SP_OBJECT_REPR(first)->attribute("id");

// FIXME: merge styles of combined objects instead of using the first one's style

style = g_strdup(SP_OBJECT_REPR(first)->attribute("style"));

sp_curve_transform(c, item->transform);

curve = c;

} else {

sp_curve_transform(c, item->getRelativeTransform(SP_OBJECT(first)));

sp_curve_append(curve, c, false);

sp_curve_unref(c);

}

// unless this is the topmost object,

if (item != first) {

// reduce position only if the same parent

if (SP_OBJECT_REPR(item)->parent() == parent)

position--;

// delete the object for real, so that its clones can take appropriate action

SP_OBJECT(item)->deleteObject();

}

}

g_slist_free(items);

if (did) {

selection->clear();

// delete the topmost one so that its clones don't get alerted; this object will be

// restored shortly, with the same id

SP_OBJECT(first)->deleteObject(false);

Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());

Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");

// restore id and style

repr->setAttribute("id", id);

repr->setAttribute("style", style);

g_free(style);

// set path data corresponding to new curve

gchar *dstring = sp_svg_write_path(SP_CURVE_BPATH(curve));

sp_curve_unref(curve);

repr->setAttribute("d", dstring);

g_free(dstring);

// add the new group to the parent of the topmost

parent->appendChild(repr);

// move to the position of the topmost, reduced by the number of deleted items

repr->setPosition(position > 0 ? position : 0);

sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_COMBINE,

_("Combine"));

selection->set(repr);

Inkscape::GC::release(repr);

} else {

sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No path(s)</b> to combine in the selection."));

}

desktop->clearWaitingCursor();

}

sp_selected_path_break_apart(void)

{

SPDesktop *desktop = SP_ACTIVE_DESKTOP;

Inkscape::Selection *selection = sp_desktop_selection(desktop);

if (selection->isEmpty()) {

sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to break apart."));

return;

}

desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Breaking apart paths..."));

// set "busy" cursor

desktop->setWaitingCursor();

bool did = false;

for (GSList *items = g_slist_copy((GSList *) selection->itemList());

items != NULL;

items = items->next) {

SPItem *item = (SPItem *) items->data;

if (!SP_IS_PATH(item))

continue;

SPPath *path = SP_PATH(item);

SPCurve *curve = sp_shape_get_curve(SP_SHAPE(path));

if (curve == NULL)

continue;

did = true;

Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();

gint pos = SP_OBJECT_REPR(item)->position();

char const *id = SP_OBJECT_REPR(item)->attribute("id");

gchar *style = g_strdup(SP_OBJECT(item)->repr->attribute("style"));

NArtBpath *abp = nr_artpath_affine(SP_CURVE_BPATH(curve), (SP_ITEM(path))->transform);

sp_curve_unref(curve);

// it's going to resurrect as one of the pieces, so we delete without advertisement

SP_OBJECT(item)->deleteObject(false);

curve = sp_curve_new_from_bpath(abp);

g_assert(curve != NULL);

GSList *list = sp_curve_split(curve);

sp_curve_unref(curve);

GSList *reprs = NULL;

for (GSList *l = list; l != NULL; l = l->next) {

curve = (SPCurve *) l->data;

Inkscape::XML::Node *repr = parent->document()->createElement("svg:path");

repr->setAttribute("style", style);

gchar *str = sp_svg_write_path(SP_CURVE_BPATH(curve));

repr->setAttribute("d", str);

g_free(str);

// add the new repr to the parent

parent->appendChild(repr);

// move to the saved position

repr->setPosition(pos > 0 ? pos : 0);

// if it's the first one, restore id

if (l == list)

repr->setAttribute("id", id);

reprs = g_slist_prepend (reprs, repr);

Inkscape::GC::release(repr);

}

selection->setReprList(reprs);

g_slist_free(reprs);

g_slist_free(list);

g_free(style);

}

desktop->clearWaitingCursor();

if (did) {

sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_BREAK_APART,

_("Break apart"));

} else {

sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No path(s)</b> to break apart in the selection."));

}

}

sp_selected_path_to_curves(bool interactive)

{

if (interactive) {

sp_selected_path_to_curves0(TRUE, SP_TOCURVE_INTERACTIVE);

} else {

sp_selected_path_to_curves0(false, 0);

}

}

static void

sp_selected_path_to_curves0(gboolean interactive, guint32 /*text_grouping_policy*/)

{

SPDesktop *desktop = SP_ACTIVE_DESKTOP;

Inkscape::Selection *selection = sp_desktop_selection(desktop);

if (selection->isEmpty()) {

if (interactive)

sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>object(s)</b> to convert to path."));

return;

}

bool did = false;

if (interactive) {

desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Converting objects to paths..."));

// set "busy" cursor

desktop->setWaitingCursor();

}

GSList *selected = g_slist_copy((GSList *) selection->itemList());

GSList *to_select = NULL;

selection->clear();

GSList *items = g_slist_copy(selected);

did = sp_item_list_to_curves(items, &selected, &to_select);

g_slist_free (items);

selection->setReprList(to_select);

selection->addList(selected);

g_slist_free (to_select);

g_slist_free (selected);

if (interactive) {

desktop->clearWaitingCursor();

if (did) {

sp_document_done(sp_desktop_document(desktop), SP_VERB_OBJECT_TO_CURVE,

_("Object to path"));

} else {

sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No objects</b> to convert to path in the selection."));

return;

}

}

}

static bool

sp_item_list_to_curves(const GSList *items, GSList **selected, GSList **to_select)

{

bool did = false;

for (;

items != NULL;

items = items->next) {

SPItem *item = SP_ITEM(items->data);

if (SP_IS_PATH(item) && !SP_PATH(item)->original_curve) {

continue; // already a path, and no path effect

}

if (SP_IS_BOX3D(item)) {

// convert 3D box to ordinary group of paths; replace the old element in 'selected' with the new group

Inkscape::XML::Node *repr = box3d_convert_to_group(SP_BOX3D(item));

if (repr) {

*to_select = g_slist_prepend (*to_select, repr);

did = true;

*selected = g_slist_remove (*selected, item);

}

continue;

}

if (SP_IS_GROUP(item)) {

sp_lpe_item_remove_path_effect(SP_LPE_ITEM(item), true);

GSList *item_list = sp_item_group_item_list(SP_GROUP(item));

GSList *item_to_select = NULL;

GSList *item_selected = NULL;

if (sp_item_list_to_curves(item_list, &item_selected, &item_to_select))

did = true;

g_slist_free(item_list);

g_slist_free(item_to_select);

g_slist_free(item_selected);

continue;

}

Inkscape::XML::Node *repr = sp_selected_item_to_curved_repr(item, 0);

if (!repr)

continue;

did = true;

*selected = g_slist_remove (*selected, item);

// remember the position of the item

gint pos = SP_OBJECT_REPR(item)->position();

// remember parent

Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();

// remember id

char const *id = SP_OBJECT_REPR(item)->attribute("id");

// It's going to resurrect, so we delete without notifying listeners.

SP_OBJECT(item)->deleteObject(false);

// restore id

repr->setAttribute("id", id);

// add the new repr to the parent

parent->appendChild(repr);

// move to the saved position

repr->setPosition(pos > 0 ? pos : 0);

/* Buglet: We don't re-add the (new version of the) object to the selection of any other

*to_select = g_slist_prepend (*to_select, repr);

Inkscape::GC::release(repr);

}

return did;

}

Inkscape::XML::Node *

sp_selected_item_to_curved_repr(SPItem *item, guint32 /*text_grouping_policy*/)

{

if (!item)

return NULL;

SPCurve *curve = NULL;

if (SP_IS_SHAPE(item)) {

curve = sp_shape_get_curve(SP_SHAPE(item));

} else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {

curve = te_get_layout(item)->convertToCurves();

}

if (!curve)

return NULL;

// Prevent empty paths from being added to the document

// otherwise we end up with zomby markup in the SVG file

if(curve->end <= 0)

{

sp_curve_unref(curve);

return NULL;

}

Inkscape::XML::Document *xml_doc = SP_OBJECT_REPR(item)->document();

Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");

/* Transformation */

repr->setAttribute("transform", SP_OBJECT_REPR(item)->attribute("transform"));

/* Style */

gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(item),

SP_OBJECT_STYLE(SP_OBJECT_PARENT(item)));

repr->setAttribute("style", style_str);

g_free(style_str);

/* Mask */

gchar *mask_str = (gchar *) SP_OBJECT_REPR(item)->attribute("mask");

if ( mask_str )

repr->setAttribute("mask", mask_str);

/* Clip path */

gchar *clip_path_str = (gchar *) SP_OBJECT_REPR(item)->attribute("clip-path");

if ( clip_path_str )

repr->setAttribute("clip-path", clip_path_str);

/* Rotation center */

sp_repr_set_attr(repr, "inkscape:transform-center-x", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-x"));

sp_repr_set_attr(repr, "inkscape:transform-center-y", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-y"));

/* Definition */

gchar *def_str = sp_svg_write_path(SP_CURVE_BPATH(curve));

repr->setAttribute("d", def_str);

g_free(def_str);

sp_curve_unref(curve);

return repr;

}

sp_selected_path_reverse()

{

SPDesktop *desktop = SP_ACTIVE_DESKTOP;

Inkscape::Selection *selection = sp_desktop_selection(desktop);

GSList *items = (GSList *) selection->itemList();

if (!items) {

sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to reverse."));

return;

}

// set "busy" cursor

desktop->setWaitingCursor();

bool did = false;

desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Reversing paths..."));

for (GSList *i = items; i != NULL; i = i->next) {

if (!SP_IS_PATH(i->data))

continue;

did = true;

SPPath *path = SP_PATH(i->data);

SPCurve *rcurve = sp_curve_reverse(sp_path_get_curve_reference(path));

gchar *str = sp_svg_write_path(SP_CURVE_BPATH(rcurve));

if ( sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(path)) ) {

SP_OBJECT_REPR(path)->setAttribute("inkscape:original-d", str);

} else {

SP_OBJECT_REPR(path)->setAttribute("d", str);

}

g_free(str);

sp_curve_unref(rcurve);

}

desktop->clearWaitingCursor();

if (did) {

sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_REVERSE,

_("Reverse path"));

} else {

sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to reverse in the selection."));

}

}