src/live_effects/parameter/point.cpp

   1 #define INKSCAPE_LIVEPATHEFFECT_PARAMETER_POINT_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/point.h"
  10 #include "live_effects/effect.h"
  11 #include "svg/svg.h"
  12 #include "svg/stringstream.h"
  13 #include <gtkmm.h>
  14 #include "ui/widget/point.h"
  15 #include "widgets/icon.h"
  16 #include "widget/registered-widget.h"
  17 #include "knot.h"
  18 #include "inkscape.h"
  19 #include "verbs.h"
  20
  21 // needed for on-canvas editting:
  22 #include "tools-switch.h"
  23 #include "shape-editor.h"
  24 #include "node-context.h"
  25 #include "desktop-handles.h"
  26 #include "selection.h"
  27 #include "desktop.h"
  28
  29 #define LPEPOINTPARAM_DEBUG // undefine to disable all on-canvas editing code for PointParam
  30
  31 #define PRM_KNOT_COLOR_NORMAL 0xffffff00
  32 #define PRM_KNOT_COLOR_SELECTED 0x0000ff00
  33
  34 namespace Inkscape {
  35
  36 namespace LivePathEffect {
  37
  38 PointParam::PointParam( const Glib::ustring& label, const Glib::ustring& tip,
  39                         const Glib::ustring& key, Inkscape::UI::Widget::Registry* wr,
  40                         Effect* effect, Geom::Point default_value )
  41     : Geom::Point(default_value), Parameter(label, tip, key, wr, effect), defvalue(default_value)
  42 {
  43     knot = NULL;
  44 #ifdef LPEPOINTPARAM_DEBUG
  45     oncanvas_editable = true;
  46 #endif
  47 }
  48
  49 PointParam::~PointParam()
  50 {
  51     if (knot)
  52         g_object_unref (G_OBJECT (knot));
  53 }
  54
  55 void
  56 PointParam::param_set_default()
  57 {
  58     param_setValue(defvalue);
  59 }
  60
  61 bool
  62 PointParam::param_readSVGValue(const gchar * strvalue)
  63 {
  64     gchar ** strarray = g_strsplit(strvalue, ",", 2);
  65     double newx, newy;
  66     unsigned int success = sp_svg_number_read_d(strarray[0], &newx);
  67     success += sp_svg_number_read_d(strarray[1], &newy);
  68     g_strfreev (strarray);
  69     if (success == 2) {
  70         param_setValue( Geom::Point(newx, newy) );
  71         return true;
  72     }
  73     return false;
  74 }
  75
  76 gchar *
  77 PointParam::param_writeSVGValue() const
  78 {
  79     Inkscape::SVGOStringStream os;
  80     os << (*this)[0] << "," << (*this)[1];
  81     gchar * str = g_strdup(os.str().c_str());
  82     return str;
  83 }
  84
  85 Gtk::Widget *
  86 PointParam::param_newWidget(Gtk::Tooltips * tooltips)
  87 {
  88     Inkscape::UI::Widget::RegisteredPoint * pointwdg = Gtk::manage(
  89         new Inkscape::UI::Widget::RegisteredPoint( param_label,
  90                                                    param_tooltip,
  91                                                    param_key,
  92                                                    *param_wr,
  93                                                    param_effect->getRepr(),
  94                                                    param_effect->getSPDoc() ) );
  95     pointwdg->setValue( (*this)[0], (*this)[1] );
  96     pointwdg->set_undo_parameters(SP_VERB_DIALOG_LIVE_PATH_EFFECT, _("Change point parameter"));
  97
  98     Gtk::Widget*  pIcon = Gtk::manage( sp_icon_get_icon( "draw_node", Inkscape::ICON_SIZE_BUTTON) );
  99     Gtk::Button * pButton = Gtk::manage(new Gtk::Button());
 100     pButton->set_relief(Gtk::RELIEF_NONE);
 101     pIcon->show();
 102     pButton->add(*pIcon);
 103     pButton->show();
 104     pButton->signal_clicked().connect(sigc::mem_fun(*this, &PointParam::on_button_click));
 105 #ifndef LPEPOINTPARAM_DEBUG
 106     pButton->set_sensitive(false);
 107 #endif
 108
 109     Gtk::HBox * hbox = Gtk::manage( new Gtk::HBox() );
 110     static_cast<Gtk::HBox*>(hbox)->pack_start(*pButton, true, true);
 111     static_cast<Gtk::HBox*>(hbox)->pack_start(*pointwdg, true, true);
 112     static_cast<Gtk::HBox*>(hbox)->show_all_children();
 113
 114     tooltips->set_tip(*pButton, _("Edit on-canvas"));
 115
 116     return dynamic_cast<Gtk::Widget *> (hbox);
 117 }
 118
 119 void
 120 PointParam::param_setValue(Geom::Point newpoint)
 121 {
 122     *dynamic_cast<Geom::Point *>( this ) = newpoint;
 123 }
 124
 125 void
 126 PointParam::param_set_and_write_new_value (Geom::Point newpoint)
 127 {
 128     Inkscape::SVGOStringStream os;
 129     os << newpoint[0] << "," << newpoint[1];
 130     gchar * str = g_strdup(os.str().c_str());
 131     param_write_to_repr(str);
 132     g_free(str);
 133 }
 134
 135 void
 136 PointParam::param_editOncanvas(SPItem * item, SPDesktop * dt)
 137 {
 138     // If not already in nodecontext, goto it!
 139     if (!tools_isactive(dt, TOOLS_NODES)) {
 140         tools_switch_current(TOOLS_NODES);
 141     }
 142
 143     ShapeEditor * shape_editor = SP_NODE_CONTEXT( dt->event_context )->shape_editor;
 144     shape_editor->set_item_lpe_point_parameter(item, SP_OBJECT(param_effect->getLPEObj()), param_key.c_str());
 145 }
 146
 147
 148
 149 void
 150 PointParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
 151 {
 152     param_set_and_write_new_value( (*this) * postmul );
 153 }
 154
 155
 156 // CALLBACKS:
 157
 158 void
 159 PointParam::on_button_click()
 160 {
 161     SPItem * item = sp_desktop_selection(SP_ACTIVE_DESKTOP)->singleItem();
 162     if (item != NULL) {
 163         param_editOncanvas(item, SP_ACTIVE_DESKTOP);
 164     }
 165 }
 166
 167 } /* namespace LivePathEffect */
 168
 169 } /* namespace Inkscape */
 170
 171 /*
 172   Local Variables:
 173   mode:c++
 174   c-file-style:"stroustrup"
 175   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 176   indent-tabs-mode:nil
 177   fill-column:99
 178   End:
 179 */
 180 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :