src/live_effects/parameter/path.cpp

   1 #define INKSCAPE_LIVEPATHEFFECT_PARAMETER_PATH_CPP
   2
   3 /*
   4  * Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>
   5  *
   6  * Released under GNU GPL, read the file 'COPYING' for more information
   7  */
   8
   9 #include "live_effects/parameter/path.h"
  10 #include "live_effects/effect.h"
  11 #include "live_effects/n-art-bpath-2geom.h"
  12 #include "svg/svg.h"
  13 #include <2geom/svg-path-parser.h>
  14 #include <2geom/sbasis-to-bezier.h>
  15 #include <2geom/d2.h>
  16
  17 #include "ui/widget/point.h"
  18 #include "widgets/icon.h"
  19 #include <gtk/gtkstock.h>
  20 #include "selection-chemistry.h"
  21 #include "xml/repr.h"
  22 #include "desktop.h"
  23 #include "inkscape.h"
  24 #include "message-stack.h"
  25 #include "verbs.h"
  26 #include "document.h"
  27
  28 // needed for on-canvas editting:
  29 #include "tools-switch.h"
  30 #include "shape-editor.h"
  31 #include "node-context.h"
  32 #include "desktop-handles.h"
  33 #include "selection.h"
  34 #include "nodepath.h"
  35
  36 namespace Inkscape {
  37
  38 namespace LivePathEffect {
  39
  40 PathParam::PathParam( const Glib::ustring& label, const Glib::ustring& tip,
  41                       const Glib::ustring& key, Inkscape::UI::Widget::Registry* wr,
  42                       Effect* effect, const gchar * default_value)
  43     : Parameter(label, tip, key, wr, effect),
  44       _pwd2(),
  45       referring(false)
  46 {
  47     defvalue = g_strdup(default_value);
  48     param_readSVGValue(defvalue);
  49     oncanvas_editable = true;
  50 }
  51
  52 PathParam::~PathParam()
  53 {
  54     g_free(defvalue);
  55 }
  56
  57 Geom::Piecewise<Geom::D2<Geom::SBasis> > const &
  58 PathParam::get_pwd2()
  59 {
  60     if (!referring) {
  61         return _pwd2;
  62     } else {
  63         /* update own pwd2 with data from path referred to
  64          when this works, optimize to only update own pwd2 when referred path changed. */
  65         //_pwd2 = ...;
  66         return _pwd2;
  67     }
  68 }
  69
  70 void
  71 PathParam::param_set_default()
  72 {
  73     param_readSVGValue(defvalue);
  74 }
  75
  76 void
  77 PathParam::param_set_and_write_default()
  78 {
  79     param_write_to_repr(defvalue);
  80 }
  81
  82 bool
  83 PathParam::param_readSVGValue(const gchar * strvalue)
  84 {
  85     if (strvalue) {
  86         Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath;
  87         std::vector<Geom::Path> temppath = SVGD_to_2GeomPath(strvalue);
  88         for (unsigned int i=0; i < temppath.size(); i++) {
  89             newpath.concat( temppath[i].toPwSb() );
  90         }
  91         _pwd2 = newpath;
  92         signal_path_changed.emit();
  93         return true;
  94     }
  95
  96     return false;
  97 }
  98
  99 gchar *
 100 PathParam::param_writeSVGValue() const
 101 {
 102     const std::vector<Geom::Path> temppath =
 103         Geom::path_from_piecewise(_pwd2, LPE_CONVERSION_TOLERANCE);
 104     gchar * svgd = SVGD_from_2GeomPath( temppath );
 105     return svgd;
 106 }
 107
 108 Gtk::Widget *
 109 PathParam::param_newWidget(Gtk::Tooltips * tooltips)
 110 {
 111     Gtk::HBox * _widget = Gtk::manage(new Gtk::HBox());
 112
 113     Gtk::Label* pLabel = Gtk::manage(new Gtk::Label(param_label));
 114     static_cast<Gtk::HBox*>(_widget)->pack_start(*pLabel, true, true);
 115     tooltips->set_tip(*pLabel, param_tooltip);
 116
 117     Gtk::Widget*  pIcon = Gtk::manage( sp_icon_get_icon( "draw_node", Inkscape::ICON_SIZE_BUTTON) );
 118     Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
 119     pButton->set_relief(Gtk::RELIEF_NONE);
 120     pIcon->show();
 121     pButton->add(*pIcon);
 122     pButton->show();
 123     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_edit_button_click));
 124     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 125     tooltips->set_tip(*pButton, _("Edit on-canvas"));
 126
 127     pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_COPY, Inkscape::ICON_SIZE_BUTTON) );
 128     pButton = Gtk::manage(new Gtk::Button());
 129     pButton->set_relief(Gtk::RELIEF_NONE);
 130     pIcon->show();
 131     pButton->add(*pIcon);
 132     pButton->show();
 133     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_copy_button_click));
 134     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 135     tooltips->set_tip(*pButton, _("Copy path"));
 136
 137     pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_PASTE, Inkscape::ICON_SIZE_BUTTON) );
 138     pButton = Gtk::manage(new Gtk::Button());
 139     pButton->set_relief(Gtk::RELIEF_NONE);
 140     pIcon->show();
 141     pButton->add(*pIcon);
 142     pButton->show();
 143     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_paste_button_click));
 144     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 145     tooltips->set_tip(*pButton, _("Paste path"));
 146
 147     static_cast<Gtk::HBox*>(_widget)->show_all_children();
 148
 149     return dynamic_cast<Gtk::Widget *> (_widget);
 150 }
 151
 152 void
 153 PathParam::param_editOncanvas(SPItem * item, SPDesktop * dt)
 154 {
 155     // If not already in nodecontext, goto it!
 156     if (!tools_isactive(dt, TOOLS_NODES)) {
 157         tools_switch_current(TOOLS_NODES);
 158     }
 159
 160     ShapeEditor * shape_editor = SP_NODE_CONTEXT( dt->event_context )->shape_editor;
 161     shape_editor->set_item_lpe_path_parameter(item, SP_OBJECT(param_effect->getLPEObj()), param_key.c_str());
 162 }
 163
 164 void
 165 PathParam::param_setup_nodepath(Inkscape::NodePath::Path *np)
 166 {
 167     np->show_helperpath = true;
 168     np->helperpath_rgba = 0x009000ff;
 169     np->helperpath_width = 1.0;
 170 }
 171
 172 void
 173 PathParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
 174 {
 175     // only apply transform when not referring to other path
 176     if (!referring)
 177         param_set_and_write_new_value( _pwd2 * postmul );
 178 }
 179
 180 void
 181 PathParam::param_set_and_write_new_value (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & newpath)
 182 {
 183     const std::vector<Geom::Path> temppath = Geom::path_from_piecewise(newpath, LPE_CONVERSION_TOLERANCE);
 184     gchar * svgd = SVGD_from_2GeomPath( temppath );
 185     param_write_to_repr(svgd);
 186     g_free(svgd);
 187 }
 188
 189 /* CALLBACK FUNCTIONS FOR THE BUTTONS */
 190 void
 191 PathParam::on_edit_button_click()
 192 {
 193     SPItem * item = sp_desktop_selection(SP_ACTIVE_DESKTOP)->singleItem();
 194     if (item != NULL) {
 195         param_editOncanvas(item, SP_ACTIVE_DESKTOP);
 196     }
 197 }
 198
 199 void
 200 PathParam::on_paste_button_click()
 201 {
 202     // check if something is in the clipboard
 203     GSList * clipboard = sp_selection_get_clipboard();
 204     if (clipboard == NULL || clipboard->data == NULL) {
 205         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Nothing on the clipboard."));
 206         return;
 207     }
 208
 209     Inkscape::XML::Node *repr = (Inkscape::XML::Node *) clipboard->data;
 210     if (!strcmp (repr->name(), "svg:path")) {
 211         const char * svgd = repr->attribute("d");
 212         if (svgd) {
 213             if (strchr(svgd,'A')) { // FIXME: temporary hack until 2Geom supports arcs in SVGD
 214                 SP_ACTIVE_DESKTOP->messageStack()->flash( Inkscape::WARNING_MESSAGE,
 215                             _("This effect does not support arcs yet, try to convert to path.") );
 216                 return;
 217             } else {
 218                 param_write_to_repr(svgd);
 219                 signal_path_pasted.emit();
 220                 sp_document_done(param_effect->getSPDoc(), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
 221                                  _("Paste path parameter"));
 222             }
 223         }
 224     } else {
 225         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Clipboard does not contain a path."));
 226         return;
 227     }
 228 }
 229
 230 void
 231 PathParam::on_copy_button_click()
 232 {
 233     sp_selection_copy_lpe_pathparam(this);
 234 }
 235
 236 } /* namespace LivePathEffect */
 237
 238 } /* namespace Inkscape */
 239
 240 /*
 241   Local Variables:
 242   mode:c++
 243   c-file-style:"stroustrup"
 244   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 245   indent-tabs-mode:nil
 246   fill-column:99
 247   End:
 248 */
 249 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :