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 void
  62 PathParam::param_set_and_write_default()
  63 {
  64     param_write_to_repr(defvalue);
  65 }
  66
  67 bool
  68 PathParam::param_readSVGValue(const gchar * strvalue)
  69 {
  70     if (strvalue) {
  71         Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath;
  72         std::vector<Geom::Path> temppath = SVGD_to_2GeomPath(strvalue);
  73         for (unsigned int i=0; i < temppath.size(); i++) {
  74             newpath.concat( temppath[i].toPwSb() );
  75         }
  76         *( dynamic_cast<Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this) ) = newpath;
  77         signal_path_changed.emit();
  78         return true;
  79     }
  80
  81     return false;
  82 }
  83
  84 gchar *
  85 PathParam::param_writeSVGValue() const
  86 {
  87     const std::vector<Geom::Path> temppath =
  88         Geom::path_from_piecewise(* dynamic_cast<const Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this), LPE_CONVERSION_TOLERANCE);
  89     gchar * svgd = SVGD_from_2GeomPath( temppath );
  90     return svgd;
  91 }
  92
  93 Gtk::Widget *
  94 PathParam::param_newWidget(Gtk::Tooltips * tooltips)
  95 {
  96     Gtk::HBox * _widget = Gtk::manage(new Gtk::HBox());
  97
  98     Gtk::Label* pLabel = Gtk::manage(new Gtk::Label(param_label));
  99     static_cast<Gtk::HBox*>(_widget)->pack_start(*pLabel, true, true);
 100     tooltips->set_tip(*pLabel, param_tooltip);
 101
 102     Gtk::Widget*  pIcon = Gtk::manage( sp_icon_get_icon( "draw_node", Inkscape::ICON_SIZE_BUTTON) );
 103     Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
 104     pButton->set_relief(Gtk::RELIEF_NONE);
 105     pIcon->show();
 106     pButton->add(*pIcon);
 107     pButton->show();
 108     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_edit_button_click));
 109     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 110     tooltips->set_tip(*pButton, _("Edit on-canvas"));
 111
 112     pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_COPY, Inkscape::ICON_SIZE_BUTTON) );
 113     pButton = Gtk::manage(new Gtk::Button());
 114     pButton->set_relief(Gtk::RELIEF_NONE);
 115     pIcon->show();
 116     pButton->add(*pIcon);
 117     pButton->show();
 118     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_copy_button_click));
 119     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 120     tooltips->set_tip(*pButton, _("Copy path"));
 121
 122     pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_PASTE, Inkscape::ICON_SIZE_BUTTON) );
 123     pButton = Gtk::manage(new Gtk::Button());
 124     pButton->set_relief(Gtk::RELIEF_NONE);
 125     pIcon->show();
 126     pButton->add(*pIcon);
 127     pButton->show();
 128     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_paste_button_click));
 129     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 130     tooltips->set_tip(*pButton, _("Paste path"));
 131
 132     static_cast<Gtk::HBox*>(_widget)->show_all_children();
 133
 134     return dynamic_cast<Gtk::Widget *> (_widget);
 135 }
 136
 137 void
 138 PathParam::param_editOncanvas(SPItem * item, SPDesktop * dt)
 139 {
 140     // If not already in nodecontext, goto it!
 141     if (!tools_isactive(dt, TOOLS_NODES)) {
 142         tools_switch_current(TOOLS_NODES);
 143     }
 144
 145     ShapeEditor * shape_editor = SP_NODE_CONTEXT( dt->event_context )->shape_editor;
 146     shape_editor->set_item_livepatheffect_parameter(item, SP_OBJECT(param_effect->getLPEObj()), param_key.c_str());
 147 }
 148
 149 void
 150 PathParam::param_setup_nodepath(Inkscape::NodePath::Path *np)
 151 {
 152     np->show_helperpath = true;
 153     np->helperpath_rgba = 0x009000ff;
 154     np->helperpath_width = 1.0;
 155 }
 156
 157 void
 158 PathParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
 159 {
 160     param_set_and_write_new_value( (*this) * postmul );
 161 }
 162
 163 void
 164 PathParam::param_set_and_write_new_value (Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath)
 165 {
 166     const std::vector<Geom::Path> temppath = Geom::path_from_piecewise(newpath, LPE_CONVERSION_TOLERANCE);
 167     gchar * svgd = SVGD_from_2GeomPath( temppath );
 168     param_write_to_repr(svgd);
 169     g_free(svgd);
 170 }
 171
 172 /* CALLBACK FUNCTIONS FOR THE BUTTONS */
 173 void
 174 PathParam::on_edit_button_click()
 175 {
 176     SPItem * item = sp_desktop_selection(SP_ACTIVE_DESKTOP)->singleItem();
 177     if (item != NULL) {
 178         param_editOncanvas(item, SP_ACTIVE_DESKTOP);
 179     }
 180 }
 181
 182 void
 183 PathParam::on_paste_button_click()
 184 {
 185     // check if something is in the clipboard
 186     GSList * clipboard = sp_selection_get_clipboard();
 187     if (clipboard == NULL || clipboard->data == NULL) {
 188         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Nothing on the clipboard."));
 189         return;
 190     }
 191
 192     Inkscape::XML::Node *repr = (Inkscape::XML::Node *) clipboard->data;
 193     if (!strcmp (repr->name(), "svg:path")) {
 194         const char * svgd = repr->attribute("d");
 195         if (svgd) {
 196             if (strchr(svgd,'A')) { // FIXME: temporary hack until 2Geom supports arcs in SVGD
 197                 SP_ACTIVE_DESKTOP->messageStack()->flash( Inkscape::WARNING_MESSAGE,
 198                             _("This effect does not support arcs yet, try to convert to path.") );
 199                 return;
 200             } else {
 201                 param_write_to_repr(svgd);
 202                 signal_path_pasted.emit();
 203                 sp_document_done(param_effect->getSPDoc(), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
 204                                  _("Paste path parameter"));
 205             }
 206         }
 207     } else {
 208         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Clipboard does not contain a path."));
 209         return;
 210     }
 211 }
 212
 213 void
 214 PathParam::on_copy_button_click()
 215 {
 216     sp_selection_copy_lpe_pathparam(this);
 217 }
 218
 219 } /* namespace LivePathEffect */
 220
 221 } /* namespace Inkscape */
 222
 223 /*
 224   Local Variables:
 225   mode:c++
 226   c-file-style:"stroustrup"
 227   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 228   indent-tabs-mode:nil
 229   fill-column:99
 230   End:
 231 */
 232 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :