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     edit_button = NULL;
  46     defvalue = g_strdup(default_value);
  47     param_readSVGValue(defvalue);
  48     oncanvas_editable = true;
  49 }
  50
  51 PathParam::~PathParam()
  52 {
  53     g_free(defvalue);
  54 }
  55
  56 void
  57 PathParam::param_set_default()
  58 {
  59     param_readSVGValue(defvalue);
  60 }
  61
  62 bool
  63 PathParam::param_readSVGValue(const gchar * strvalue)
  64 {
  65     if (strvalue) {
  66         Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath;
  67         std::vector<Geom::Path> temppath = SVGD_to_2GeomPath(strvalue);
  68         for (unsigned int i=0; i < temppath.size(); i++) {
  69             newpath.concat( temppath[i].toPwSb() );
  70         }
  71         *( dynamic_cast<Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this) ) = newpath;
  72         signal_path_changed.emit();
  73         return true;
  74     }
  75
  76     return false;
  77 }
  78
  79 gchar *
  80 PathParam::param_writeSVGValue() const
  81 {
  82     const std::vector<Geom::Path> temppath =
  83         Geom::path_from_piecewise(* dynamic_cast<const Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this), LPE_CONVERSION_TOLERANCE);
  84     gchar * svgd = SVGD_from_2GeomPath( temppath );
  85     return svgd;
  86 }
  87
  88 Gtk::Widget *
  89 PathParam::param_newWidget(Gtk::Tooltips * tooltips)
  90 {
  91     Gtk::HBox * _widget = Gtk::manage(new Gtk::HBox());
  92
  93     Gtk::Label* pLabel = Gtk::manage(new Gtk::Label(param_label));
  94     static_cast<Gtk::HBox*>(_widget)->pack_start(*pLabel, true, true);
  95     tooltips->set_tip(*pLabel, param_tooltip);
  96
  97     Gtk::Widget*  pIcon = Gtk::manage( sp_icon_get_icon( "draw_node", Inkscape::ICON_SIZE_BUTTON) );
  98     Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
  99     pButton->set_relief(Gtk::RELIEF_NONE);
 100     pIcon->show();
 101     pButton->add(*pIcon);
 102     pButton->show();
 103     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_edit_button_click));
 104     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 105     tooltips->set_tip(*pButton, _("Edit on-canvas"));
 106     edit_button = pButton;
 107
 108     pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_PASTE, Inkscape::ICON_SIZE_BUTTON) );
 109     pButton = Gtk::manage(new Gtk::Button());
 110     pButton->set_relief(Gtk::RELIEF_NONE);
 111     pIcon->show();
 112     pButton->add(*pIcon);
 113     pButton->show();
 114     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_paste_button_click));
 115     static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 116     tooltips->set_tip(*pButton, _("Paste path"));
 117
 118     static_cast<Gtk::HBox*>(_widget)->show_all_children();
 119
 120     return dynamic_cast<Gtk::Widget *> (_widget);
 121 }
 122
 123 void
 124 PathParam::param_editOncanvas(SPItem * item, SPDesktop * dt)
 125 {
 126     // If not already in nodecontext, goto it!
 127     if (!tools_isactive(dt, TOOLS_NODES)) {
 128         tools_switch_current(TOOLS_NODES);
 129     }
 130
 131     ShapeEditor * shape_editor = SP_NODE_CONTEXT( dt->event_context )->shape_editor;
 132     shape_editor->set_item_livepatheffect_parameter(item, SP_OBJECT(param_effect->getLPEObj()), param_key.c_str());
 133 }
 134
 135 void
 136 PathParam::param_setup_nodepath(Inkscape::NodePath::Path *np)
 137 {
 138     np->show_helperpath = true;
 139     np->helperpath_rgba = 0x009000ff;
 140     np->helperpath_width = 1.0;
 141 }
 142
 143 void
 144 PathParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
 145 {
 146     param_set_and_write_new_value( (*this) * postmul );
 147 }
 148
 149 void
 150 PathParam::param_set_and_write_new_value (Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath)
 151 {
 152     const std::vector<Geom::Path> temppath = Geom::path_from_piecewise(newpath, LPE_CONVERSION_TOLERANCE);
 153     gchar * svgd = SVGD_from_2GeomPath( temppath );
 154     param_write_to_repr(svgd);
 155     g_free(svgd);
 156 }
 157
 158 /* CALLBACK FUNCTIONS FOR THE BUTTONS */
 159 void
 160 PathParam::on_edit_button_click()
 161 {
 162     SPItem * item = sp_desktop_selection(SP_ACTIVE_DESKTOP)->singleItem();
 163     if (item != NULL) {
 164         param_editOncanvas(item, SP_ACTIVE_DESKTOP);
 165     }
 166 }
 167
 168 void
 169 PathParam::on_paste_button_click()
 170 {
 171     // check if something is in the clipboard
 172     GSList * clipboard = sp_selection_get_clipboard();
 173     if (clipboard == NULL || clipboard->data == NULL) {
 174         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Nothing on the clipboard."));
 175         return;
 176     }
 177
 178     Inkscape::XML::Node *repr = (Inkscape::XML::Node *) clipboard->data;
 179     if (!strcmp (repr->name(), "svg:path")) {
 180         const char * svgd = repr->attribute("d");
 181         if (svgd) {
 182             if (strchr(svgd,'A')) { // FIXME: temporary hack until 2Geom supports arcs in SVGD
 183                 SP_ACTIVE_DESKTOP->messageStack()->flash( Inkscape::WARNING_MESSAGE,
 184                             _("This effect does not support arcs yet, try to convert to path.") );
 185                 return;
 186             } else {
 187                 param_write_to_repr(svgd);
 188                 signal_path_pasted.emit();
 189                 sp_document_done(param_effect->getSPDoc(), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
 190                                  _("Paste path parameter"));
 191             }
 192         }
 193     } else {
 194         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Clipboard does not contain a path."));
 195         return;
 196     }
 197 }
 198
 199
 200 } /* namespace LivePathEffect */
 201
 202 } /* namespace Inkscape */
 203
 204 /*
 205   Local Variables:
 206   mode:c++
 207   c-file-style:"stroustrup"
 208   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 209   indent-tabs-mode:nil
 210   fill-column:99
 211   End:
 212 */
 213 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :