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     _widget = NULL;
  46     _tooltips = NULL;
  47     edit_button = NULL;
  48     defvalue = g_strdup(default_value);
  49     param_readSVGValue(defvalue);
  50     oncanvas_editable = true;
  51 }
  52
  53 PathParam::~PathParam()
  54 {
  55     if (_tooltips)
  56         delete _tooltips;
  57     // _widget is managed by GTK so do not delete!
  58
  59     g_free(defvalue);
  60 }
  61
  62 void
  63 PathParam::param_set_default()
  64 {
  65     param_readSVGValue(defvalue);
  66 }
  67
  68 bool
  69 PathParam::param_readSVGValue(const gchar * strvalue)
  70 {
  71     if (strvalue) {
  72         Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath;
  73         std::vector<Geom::Path> temppath = SVGD_to_2GeomPath(strvalue);
  74         for (unsigned int i=0; i < temppath.size(); i++) {
  75             newpath.concat( temppath[i].toPwSb() );
  76         }
  77         *( dynamic_cast<Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this) ) = newpath;
  78         signal_path_changed.emit();
  79         return true;
  80     }
  81
  82     return false;
  83 }
  84
  85 gchar *
  86 PathParam::param_writeSVGValue() const
  87 {
  88     const std::vector<Geom::Path> temppath =
  89         Geom::path_from_piecewise(* dynamic_cast<const Geom::Piecewise<Geom::D2<Geom::SBasis> > *> (this), LPE_CONVERSION_TOLERANCE);
  90     gchar * svgd = SVGD_from_2GeomPath( temppath );
  91     return svgd;
  92 }
  93
  94 Gtk::Widget *
  95 PathParam::param_getWidget()
  96 {
  97     if (!_widget) {
  98         _widget = Gtk::manage(new Gtk::HBox());
  99         _tooltips = new Gtk::Tooltips();
 100
 101         Gtk::Label* pLabel = Gtk::manage(new Gtk::Label(param_label));
 102         static_cast<Gtk::HBox*>(_widget)->pack_start(*pLabel, true, true);
 103         _tooltips->set_tip(*pLabel, param_tooltip);
 104
 105         Gtk::Widget*  pIcon = Gtk::manage( sp_icon_get_icon( "draw_node", Inkscape::ICON_SIZE_BUTTON) );
 106         Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
 107         pButton->set_relief(Gtk::RELIEF_NONE);
 108         pIcon->show();
 109         pButton->add(*pIcon);
 110         pButton->show();
 111         pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_edit_button_click));
 112         static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 113         _tooltips->set_tip(*pButton, _("Edit on-canvas"));
 114         edit_button = pButton;
 115
 116         pIcon = Gtk::manage( sp_icon_get_icon( GTK_STOCK_PASTE, Inkscape::ICON_SIZE_BUTTON) );
 117         pButton = Gtk::manage(new Gtk::Button());
 118         pButton->set_relief(Gtk::RELIEF_NONE);
 119         pIcon->show();
 120         pButton->add(*pIcon);
 121         pButton->show();
 122         pButton->signal_clicked().connect(sigc::mem_fun(*this, &PathParam::on_paste_button_click));
 123         static_cast<Gtk::HBox*>(_widget)->pack_start(*pButton, true, true);
 124         _tooltips->set_tip(*pButton, _("Paste path"));
 125
 126         static_cast<Gtk::HBox*>(_widget)->show_all_children();
 127
 128     }
 129     return dynamic_cast<Gtk::Widget *> (_widget);
 130 }
 131
 132 void
 133 PathParam::param_editOncanvas(SPItem * item, SPDesktop * dt)
 134 {
 135     // If not already in nodecontext, goto it!
 136     if (!tools_isactive(dt, TOOLS_NODES)) {
 137         tools_switch_current(TOOLS_NODES);
 138     }
 139
 140     ShapeEditor * shape_editor = SP_NODE_CONTEXT( dt->event_context )->shape_editor;
 141     shape_editor->set_item_livepatheffect_parameter(item, SP_OBJECT(param_effect->getLPEObj()), param_key.c_str());
 142 }
 143
 144 void
 145 PathParam::param_setup_nodepath(Inkscape::NodePath::Path *np)
 146 {
 147     np->show_helperpath = true;
 148     np->helperpath_rgba = 0x009000ff;
 149     np->helperpath_width = 1.0;
 150 }
 151
 152 void
 153 PathParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
 154 {
 155     param_set_and_write_new_value( (*this) * postmul );
 156 }
 157
 158 void
 159 PathParam::param_set_and_write_new_value (Geom::Piecewise<Geom::D2<Geom::SBasis> > newpath)
 160 {
 161     const std::vector<Geom::Path> temppath = Geom::path_from_piecewise(newpath, LPE_CONVERSION_TOLERANCE);
 162     gchar * svgd = SVGD_from_2GeomPath( temppath );
 163     param_write_to_repr(svgd);
 164     g_free(svgd);
 165 }
 166
 167 /* CALLBACK FUNCTIONS FOR THE BUTTONS */
 168 void
 169 PathParam::on_edit_button_click()
 170 {
 171     SPItem * item = sp_desktop_selection(SP_ACTIVE_DESKTOP)->singleItem();
 172     if (item != NULL) {
 173         param_editOncanvas(item, SP_ACTIVE_DESKTOP);
 174     }
 175 }
 176
 177 void
 178 PathParam::on_paste_button_click()
 179 {
 180     // check if something is in the clipboard
 181     GSList * clipboard = sp_selection_get_clipboard();
 182     if (clipboard == NULL || clipboard->data == NULL) {
 183         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Nothing on the clipboard."));
 184         return;
 185     }
 186
 187     Inkscape::XML::Node *repr = (Inkscape::XML::Node *) clipboard->data;
 188     if (!strcmp (repr->name(), "svg:path")) {
 189         const char * svgd = repr->attribute("d");
 190         if (svgd) {
 191             if (strchr(svgd,'A')) { // FIXME: temporary hack until 2Geom supports arcs in SVGD
 192                 SP_ACTIVE_DESKTOP->messageStack()->flash( Inkscape::WARNING_MESSAGE,
 193                             _("This effect does not support arcs yet, try to convert to path.") );
 194                 return;
 195             } else {
 196                 param_write_to_repr(svgd);
 197                 signal_path_pasted.emit();
 198                 sp_document_done(param_effect->getSPDoc(), SP_VERB_DIALOG_LIVE_PATH_EFFECT,
 199                                  _("Paste path parameter"));
 200             }
 201         }
 202     } else {
 203         SP_ACTIVE_DESKTOP->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Clipboard does not contain a path."));
 204         return;
 205     }
 206 }
 207
 208
 209 } /* namespace LivePathEffect */
 210
 211 } /* namespace Inkscape */
 212
 213 /*
 214   Local Variables:
 215   mode:c++
 216   c-file-style:"stroustrup"
 217   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 218   indent-tabs-mode:nil
 219   fill-column:99
 220   End:
 221 */
 222 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :