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
  35 namespace Inkscape {
  36
  37 namespace LivePathEffect {
  38
  39 PathParam::PathParam( const Glib::ustring& label, const Glib::ustring& tip,
  40                       const Glib::ustring& key, Inkscape::UI::Widget::Registry* wr,
  41                       Effect* effect, const gchar * default_value)
  42     : Parameter(label, tip, key, wr, effect)
  43 {
  44     _widget = NULL;
  45     _tooltips = NULL;
  46     edit_button = NULL;
  47     defvalue = g_strdup(default_value);
  48     param_readSVGValue(defvalue);
  49 }
  50
  51 PathParam::~PathParam()
  52 {
  53     if (_tooltips)
  54         delete _tooltips;
  55     // _widget is managed by GTK so do not delete!
  56
  57     g_free(defvalue);
  58 }
  59
  60 void
  61 PathParam::param_set_default()
  62 {
  63     param_readSVGValue(defvalue);
  64 }
  65
  66 bool
  67 PathParam::param_readSVGValue(const gchar * strvalue)
  68 {
  69     if (strvalue) {
  70         Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath;
  71         std::vector<Geom::Path> temppath = SVGD_to_2GeomPath(strvalue);
  72         for (unsigned int i=0; i < temppath.size(); i++) {
  73             newpath.concat( temppath[i].toPwSb() );
  74         }
  75         *( dynamic_cast<Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this) ) = newpath;
  76         signal_path_changed.emit();
  77         return true;
  78     }
  79
  80     return false;
  81 }
  82
  83 gchar *
  84 PathParam::param_writeSVGValue() const
  85 {
  86     const std::vector<Geom::Path> temppath =
  87         Geom::path_from_piecewise(* dynamic_cast<const Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this), LPE_CONVERSION_TOLERANCE);
  88     gchar * svgd = SVGD_from_2GeomPath( temppath );
  89     return svgd;
  90 }
  91
  92 Gtk::Widget *
  93 PathParam::param_getWidget()
  94 {
  95     if (!_widget) {
  96         _widget = Gtk::manage(new Gtk::HBox());
  97         _tooltips = new Gtk::Tooltips();
  98
  99         Gtk::Label* pLabel = Gtk::manage(new Gtk::Label(param_label));
 100         static_cast<Gtk::HBox*>(_widget)->pack_start(*pLabel, true, true);
 101         _tooltips->set_tip(*pLabel, param_tooltip);
 102
 103         Gtk::Widget*  pIcon = Gtk::manage( sp_icon_get_icon( "draw_node", Inkscape::ICON_SIZE_BUTTON) );
 104         Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
 105         pButton->set_relief(Gtk::RELIEF_NONE);
 106         pIcon->show();
 107         pButton->add(*pIcon);
 108         pButton->show();
 109         pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_edit_button_click));
 110         static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 111         _tooltips->set_tip(*pButton, _("Edit on-canvas"));
 112         edit_button = pButton;
 113
 114         pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_PASTE, Inkscape::ICON_SIZE_BUTTON) );
 115         pButton = Gtk::manage(new Gtk::Button());
 116         pButton->set_relief(Gtk::RELIEF_NONE);
 117         pIcon->show();
 118         pButton->add(*pIcon);
 119         pButton->show();
 120         pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_paste_button_click));
 121         static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 122         _tooltips->set_tip(*pButton, _("Paste path"));
 123
 124         static_cast<Gtk::HBox*>(_widget)->show_all_children();
 125
 126     }
 127     return dynamic_cast<Gtk::Widget *> (_widget);
 128 }
 129
 130 void
 131 PathParam::on_edit_button_click()
 132 {
 133     // Switch to node edit tool:
 134     tools_switch_current(TOOLS_NODES);
 135
 136     // set this parameter to edit:
 137     ShapeEditor * shape_editor = SP_NODE_CONTEXT( SP_ACTIVE_DESKTOP->event_context )->shape_editor;
 138     SPItem * item = sp_desktop_selection(SP_ACTIVE_DESKTOP)->singleItem();
 139     shape_editor->set_item_livepatheffect_parameter(item, SP_OBJECT(param_effect->getLPEObj()), param_key.c_str());
 140 }
 141
 142 void
 143 PathParam::on_paste_button_click()
 144 {
 145     // check if something is in the clipboard
 146     GSList * clipboard = sp_selection_get_clipboard();
 147     if (clipboard == NULL || clipboard->data == NULL) {
 148         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Nothing on the clipboard."));
 149         return;
 150     }
 151
 152     Inkscape::XML::Node *repr = (Inkscape::XML::Node *) clipboard->data;
 153     if (!strcmp (repr->name(), "svg:path")) {
 154         const char * svgd = repr->attribute("d");
 155         if (svgd) {
 156             if (strchr(svgd,'A')) { // FIXME: temporary hack until 2Geom supports arcs in SVGD
 157                 SP_ACTIVE_DESKTOP->messageStack()->flash( Inkscape::WARNING_MESSAGE,
 158                             _("This effect does not support arcs yet, try to convert to path.") );
 159                 return;
 160             } else {
 161                 param_write_to_repr(svgd);
 162                 signal_path_pasted.emit();
 163                 sp_document_done(param_effect->getSPDoc(), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
 164                                  _("Paste path parameter"));
 165             }
 166         }
 167     } else {
 168         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Clipboard does not contain a path."));
 169         return;
 170     }
 171 }
 172
 173 void
 174 PathParam::param_write_to_repr(const char * svgd)
 175 {
 176     param_effect->getRepr()->setAttribute(param_key.c_str(), svgd);
 177 }
 178
 179
 180 } /* namespace LivePathEffect */
 181
 182 } /* namespace Inkscape */
 183
 184 /*
 185   Local Variables:
 186   mode:c++
 187   c-file-style:"stroustrup"
 188   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 189   indent-tabs-mode:nil
 190   fill-column:99
 191   End:
 192 */
 193 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :