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     oncanvas_editable = true;
  50 }
  51
  52 PathParam::~PathParam()
  53 {
  54     if (_tooltips)
  55         delete _tooltips;
  56     // _widget is managed by GTK so do not delete!
  57
  58     g_free(defvalue);
  59 }
  60
  61 void
  62 PathParam::param_set_default()
  63 {
  64     param_readSVGValue(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_getWidget()
  95 {
  96     if (!_widget) {
  97         _widget = Gtk::manage(new Gtk::HBox());
  98         _tooltips = new Gtk::Tooltips();
  99
 100         Gtk::Label* pLabel = Gtk::manage(new Gtk::Label(param_label));
 101         static_cast<Gtk::HBox*>(_widget)->pack_start(*pLabel, true, true);
 102         _tooltips->set_tip(*pLabel, param_tooltip);
 103
 104         Gtk::Widget*  pIcon = Gtk::manage( sp_icon_get_icon( "draw_node", Inkscape::ICON_SIZE_BUTTON) );
 105         Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
 106         pButton->set_relief(Gtk::RELIEF_NONE);
 107         pIcon->show();
 108         pButton->add(*pIcon);
 109         pButton->show();
 110         pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_edit_button_click));
 111         static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 112         _tooltips->set_tip(*pButton, _("Edit on-canvas"));
 113         edit_button = pButton;
 114
 115         pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_PASTE, Inkscape::ICON_SIZE_BUTTON) );
 116         pButton = Gtk::manage(new Gtk::Button());
 117         pButton->set_relief(Gtk::RELIEF_NONE);
 118         pIcon->show();
 119         pButton->add(*pIcon);
 120         pButton->show();
 121         pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_paste_button_click));
 122         static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 123         _tooltips->set_tip(*pButton, _("Paste path"));
 124
 125         static_cast<Gtk::HBox*>(_widget)->show_all_children();
 126
 127     }
 128     return dynamic_cast<Gtk::Widget *> (_widget);
 129 }
 130
 131 void
 132 PathParam::param_editOncanvas(SPItem * item, SPDesktop * dt)
 133 {
 134     // If not already in nodecontext, goto it!
 135     if (!tools_isactive(dt, TOOLS_NODES)) {
 136         tools_switch_current(TOOLS_NODES);
 137     }
 138
 139     ShapeEditor * shape_editor = SP_NODE_CONTEXT( dt->event_context )->shape_editor;
 140     shape_editor->set_item_livepatheffect_parameter(item, SP_OBJECT(param_effect->getLPEObj()), param_key.c_str());
 141 }
 142
 143 void
 144 PathParam::param_write_to_repr(const char * svgd)
 145 {
 146     param_effect->getRepr()->setAttribute(param_key.c_str(), svgd);
 147 }
 148
 149
 150 /* CALLBACK FUNCTIONS FOR THE BUTTONS */
 151 void
 152 PathParam::on_edit_button_click()
 153 {
 154     SPItem * item = sp_desktop_selection(SP_ACTIVE_DESKTOP)->singleItem();
 155     if (item != NULL) {
 156         param_editOncanvas(item, SP_ACTIVE_DESKTOP);
 157     }
 158 }
 159
 160 void
 161 PathParam::on_paste_button_click()
 162 {
 163     // check if something is in the clipboard
 164     GSList * clipboard = sp_selection_get_clipboard();
 165     if (clipboard == NULL || clipboard->data == NULL) {
 166         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Nothing on the clipboard."));
 167         return;
 168     }
 169
 170     Inkscape::XML::Node *repr = (Inkscape::XML::Node *) clipboard->data;
 171     if (!strcmp (repr->name(), "svg:path")) {
 172         const char * svgd = repr->attribute("d");
 173         if (svgd) {
 174             if (strchr(svgd,'A')) { // FIXME: temporary hack until 2Geom supports arcs in SVGD
 175                 SP_ACTIVE_DESKTOP->messageStack()->flash( Inkscape::WARNING_MESSAGE,
 176                             _("This effect does not support arcs yet, try to convert to path.") );
 177                 return;
 178             } else {
 179                 param_write_to_repr(svgd);
 180                 signal_path_pasted.emit();
 181                 sp_document_done(param_effect->getSPDoc(), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
 182                                  _("Paste path parameter"));
 183             }
 184         }
 185     } else {
 186         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Clipboard does not contain a path."));
 187         return;
 188     }
 189 }
 190
 191
 192 } /* namespace LivePathEffect */
 193
 194 } /* namespace Inkscape */
 195
 196 /*
 197   Local Variables:
 198   mode:c++
 199   c-file-style:"stroustrup"
 200   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 201   indent-tabs-mode:nil
 202   fill-column:99
 203   End:
 204 */
 205 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :