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 "ui/widget/registered-widget.h"
  17 #include "inkscape.h"
  18 #include "verbs.h"
  19 #include "knotholder.h"
  20
  21 // needed for on-canvas editting:
  22 #include "desktop.h"
  23
  24 namespace Inkscape {
  25
  26 namespace LivePathEffect {
  27
  28 PointParam::PointParam( const Glib::ustring& label, const Glib::ustring& tip,
  29                         const Glib::ustring& key, Inkscape::UI::Widget::Registry* wr,
  30                         Effect* effect, const gchar *htip, Geom::Point default_value)
  31     : Geom::Point(default_value), Parameter(label, tip, key, wr, effect), defvalue(default_value)
  32 {
  33     knot_shape = SP_KNOT_SHAPE_DIAMOND;
  34     knot_mode  = SP_KNOT_MODE_XOR;
  35     knot_color = 0xffffff00;
  36     handle_tip = g_strdup(htip);
  37 }
  38
  39 PointParam::~PointParam()
  40 {
  41     if (handle_tip)
  42         g_free(handle_tip);
  43 }
  44
  45 void
  46 PointParam::param_set_default()
  47 {
  48     param_setValue(defvalue);
  49 }
  50
  51 bool
  52 PointParam::param_readSVGValue(const gchar * strvalue)
  53 {
  54     gchar ** strarray = g_strsplit(strvalue, ",", 2);
  55     double newx, newy;
  56     unsigned int success = sp_svg_number_read_d(strarray[0], &newx);
  57     success += sp_svg_number_read_d(strarray[1], &newy);
  58     g_strfreev (strarray);
  59     if (success == 2) {
  60         param_setValue( Geom::Point(newx, newy) );
  61         return true;
  62     }
  63     return false;
  64 }
  65
  66 gchar *
  67 PointParam::param_getSVGValue() const
  68 {
  69     Inkscape::SVGOStringStream os;
  70     os << *dynamic_cast<Geom::Point const *>( this );
  71     gchar * str = g_strdup(os.str().c_str());
  72     return str;
  73 }
  74
  75 Gtk::Widget *
  76 PointParam::param_newWidget(Gtk::Tooltips * /*tooltips*/)
  77 {
  78     Inkscape::UI::Widget::RegisteredTransformedPoint * pointwdg = Gtk::manage(
  79         new Inkscape::UI::Widget::RegisteredTransformedPoint( param_label,
  80                                                               param_tooltip,
  81                                                               param_key,
  82                                                               *param_wr,
  83                                                               param_effect->getRepr(),
  84                                                               param_effect->getSPDoc() ) );
  85     // TODO: fix to get correct desktop (don't use SP_ACTIVE_DESKTOP)
  86     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
  87     Geom::Matrix transf = desktop->doc2dt();
  88     pointwdg->setTransform(transf);
  89     pointwdg->setValue( *this );
  90     pointwdg->clearProgrammatically();
  91     pointwdg->set_undo_parameters(SP_VERB_DIALOG_LIVE_PATH_EFFECT, _("Change point parameter"));
  92
  93     Gtk::HBox * hbox = Gtk::manage( new Gtk::HBox() );
  94     static_cast<Gtk::HBox*>(hbox)->pack_start(*pointwdg, true, true);
  95     static_cast<Gtk::HBox*>(hbox)->show_all_children();
  96
  97     return dynamic_cast<Gtk::Widget *> (hbox);
  98 }
  99
 100 void
 101 PointParam::param_setValue(Geom::Point newpoint)
 102 {
 103     *dynamic_cast<Geom::Point *>( this ) = newpoint;
 104 }
 105
 106 void
 107 PointParam::param_set_and_write_new_value (Geom::Point newpoint)
 108 {
 109     Inkscape::SVGOStringStream os;
 110     os << newpoint;
 111     gchar * str = g_strdup(os.str().c_str());
 112     param_write_to_repr(str);
 113     g_free(str);
 114 }
 115
 116 void
 117 PointParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
 118 {
 119     param_set_and_write_new_value( (*this) * postmul );
 120 }
 121
 122
 123 void
 124 PointParam::set_oncanvas_looks(SPKnotShapeType shape, SPKnotModeType mode, guint32 color)
 125 {
 126     knot_shape = shape;
 127     knot_mode  = mode;
 128     knot_color = color;
 129 }
 130
 131 class PointParamKnotHolderEntity : public LPEKnotHolderEntity {
 132 public:
 133     PointParamKnotHolderEntity(PointParam *p) { this->pparam = p; }
 134     virtual ~PointParamKnotHolderEntity() {}
 135
 136     virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state);
 137     virtual Geom::Point knot_get();
 138     virtual void knot_click(guint state);
 139
 140 private:
 141     PointParam *pparam;
 142 };
 143
 144 void
 145 PointParamKnotHolderEntity::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint /*state*/)
 146 {
 147     Geom::Point const s = snap_knot_position(p);
 148     pparam->param_setValue(s);
 149     sp_lpe_item_update_patheffect(SP_LPE_ITEM(item), false, false);
 150 }
 151
 152 Geom::Point
 153 PointParamKnotHolderEntity::knot_get()
 154 {
 155     return *pparam;
 156 }
 157
 158 void
 159 PointParamKnotHolderEntity::knot_click(guint /*state*/)
 160 {
 161     g_print ("This is the handle associated to parameter '%s'\n", pparam->param_key.c_str());
 162 }
 163
 164 void
 165 PointParam::addKnotHolderEntities(KnotHolder *knotholder, SPDesktop *desktop, SPItem *item)
 166 {
 167     PointParamKnotHolderEntity *e = new PointParamKnotHolderEntity(this);
 168     // TODO: can we ditch handleTip() etc. because we have access to handle_tip etc. itself???
 169     e->create(desktop, item, knotholder, handleTip(), knot_shape, knot_mode, knot_color);
 170     knotholder->add(e);
 171
 172 }
 173
 174 } /* namespace LivePathEffect */
 175
 176 } /* namespace Inkscape */
 177
 178 /*
 179   Local Variables:
 180   mode:c++
 181   c-file-style:"stroustrup"
 182   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 183   indent-tabs-mode:nil
 184   fill-column:99
 185   End:
 186 */
 187 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :