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
  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 {
  45     defvalue = g_strdup(default_value);
  46     param_readSVGValue(defvalue);
  47     oncanvas_editable = true;
  48 }
  49
  50 PathParam::~PathParam()
  51 {
  52     g_free(defvalue);
  53 }
  54
  55 void
  56 PathParam::param_set_default()
  57 {
  58     param_readSVGValue(defvalue);
  59 }
  60
  61 bool
  62 PathParam::param_readSVGValue(const gchar * strvalue)
  63 {
  64     if (strvalue) {
  65         Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath;
  66         std::vector<Geom::Path> temppath = SVGD_to_2GeomPath(strvalue);
  67         for (unsigned int i=0; i < temppath.size(); i++) {
  68             newpath.concat( temppath[i].toPwSb() );
  69         }
  70         *( dynamic_cast<Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this) ) = newpath;
  71         signal_path_changed.emit();
  72         return true;
  73     }
  74
  75     return false;
  76 }
  77
  78 gchar *
  79 PathParam::param_writeSVGValue() const
  80 {
  81     const std::vector<Geom::Path> temppath =
  82         Geom::path_from_piecewise(* dynamic_cast<const Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this), LPE_CONVERSION_TOLERANCE);
  83     gchar * svgd = SVGD_from_2GeomPath( temppath );
  84     return svgd;
  85 }
  86
  87 Gtk::Widget *
  88 PathParam::param_newWidget(Gtk::Tooltips * tooltips)
  89 {
  90     Gtk::HBox * _widget = Gtk::manage(new Gtk::HBox());
  91
  92     Gtk::Label* pLabel = Gtk::manage(new Gtk::Label(param_label));
  93     static_cast<Gtk::HBox*>(_widget)->pack_start(*pLabel, true, true);
  94     tooltips->set_tip(*pLabel, param_tooltip);
  95
  96     Gtk::Widget*  pIcon = Gtk::manage( sp_icon_get_icon( "draw_node", Inkscape::ICON_SIZE_BUTTON) );
  97     Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
  98     pButton->set_relief(Gtk::RELIEF_NONE);
  99     pIcon->show();
 100     pButton->add(*pIcon);
 101     pButton->show();
 102     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_edit_button_click));
 103     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 104     tooltips->set_tip(*pButton, _("Edit on-canvas"));
 105
 106     pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_PASTE, Inkscape::ICON_SIZE_BUTTON) );
 107     pButton = Gtk::manage(new Gtk::Button());
 108     pButton->set_relief(Gtk::RELIEF_NONE);
 109     pIcon->show();
 110     pButton->add(*pIcon);
 111     pButton->show();
 112     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_paste_button_click));
 113     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 114     tooltips->set_tip(*pButton, _("Paste path"));
 115
 116     static_cast<Gtk::HBox*>(_widget)->show_all_children();
 117
 118     return dynamic_cast<Gtk::Widget *> (_widget);
 119 }
 120
 121 void
 122 PathParam::param_editOncanvas(SPItem * item, SPDesktop * dt)
 123 {
 124     // If not already in nodecontext, goto it!
 125     if (!tools_isactive(dt, TOOLS_NODES)) {
 126         tools_switch_current(TOOLS_NODES);
 127     }
 128
 129     ShapeEditor * shape_editor = SP_NODE_CONTEXT( dt->event_context )->shape_editor;
 130     shape_editor->set_item_livepatheffect_parameter(item, SP_OBJECT(param_effect->getLPEObj()), param_key.c_str());
 131 }
 132
 133 void
 134 PathParam::param_setup_nodepath(Inkscape::NodePath::Path *np)
 135 {
 136     np->show_helperpath = true;
 137     np->helperpath_rgba = 0x009000ff;
 138     np->helperpath_width = 1.0;
 139 }
 140
 141 void
 142 PathParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
 143 {
 144     param_set_and_write_new_value( (*this) * postmul );
 145 }
 146
 147 void
 148 PathParam::param_set_and_write_new_value (Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath)
 149 {
 150     const std::vector<Geom::Path> temppath = Geom::path_from_piecewise(newpath, LPE_CONVERSION_TOLERANCE);
 151     gchar * svgd = SVGD_from_2GeomPath( temppath );
 152     param_write_to_repr(svgd);
 153     g_free(svgd);
 154 }
 155
 156 /* CALLBACK FUNCTIONS FOR THE BUTTONS */
 157 void
 158 PathParam::on_edit_button_click()
 159 {
 160     SPItem * item = sp_desktop_selection(SP_ACTIVE_DESKTOP)->singleItem();
 161     if (item != NULL) {
 162         param_editOncanvas(item, SP_ACTIVE_DESKTOP);
 163     }
 164 }
 165
 166 void
 167 PathParam::on_paste_button_click()
 168 {
 169     // check if something is in the clipboard
 170     GSList * clipboard = sp_selection_get_clipboard();
 171     if (clipboard == NULL || clipboard->data == NULL) {
 172         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Nothing on the clipboard."));
 173         return;
 174     }
 175
 176     Inkscape::XML::Node *repr = (Inkscape::XML::Node *) clipboard->data;
 177     if (!strcmp (repr->name(), "svg:path")) {
 178         const char * svgd = repr->attribute("d");
 179         if (svgd) {
 180             if (strchr(svgd,'A')) { // FIXME: temporary hack until 2Geom supports arcs in SVGD
 181                 SP_ACTIVE_DESKTOP->messageStack()->flash( Inkscape::WARNING_MESSAGE,
 182                             _("This effect does not support arcs yet, try to convert to path.") );
 183                 return;
 184             } else {
 185                 param_write_to_repr(svgd);
 186                 signal_path_pasted.emit();
 187                 sp_document_done(param_effect->getSPDoc(), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
 188                                  _("Paste path parameter"));
 189             }
 190         }
 191     } else {
 192         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Clipboard does not contain a path."));
 193         return;
 194     }
 195 }
 196
 197
 198 } /* namespace LivePathEffect */
 199
 200 } /* namespace Inkscape */
 201
 202 /*
 203   Local Variables:
 204   mode:c++
 205   c-file-style:"stroustrup"
 206   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 207   indent-tabs-mode:nil
 208   fill-column:99
 209   End:
 210 */
 211 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :