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/parameter/pointparam-knotholder.h"
  11 #include "live_effects/effect.h"
  12 #include "svg/svg.h"
  13 #include "svg/stringstream.h"
  14 #include <gtkmm.h>
  15 #include "ui/widget/point.h"
  16 #include "widgets/icon.h"
  17 #include "ui/widget/registered-widget.h"
  18 #include "inkscape.h"
  19 #include "verbs.h"
  20
  21 // needed for on-canvas editting:
  22 #include "tools-switch.h"
  23 #include "node-context.h"
  24 #include "shape-editor.h"
  25 #include "desktop.h"
  26 #include "selection.h"
  27 #include "libnr/nr-convert2geom.h"
  28
  29 namespace Inkscape {
  30
  31 namespace LivePathEffect {
  32
  33 PointParam::PointParam( const Glib::ustring& label, const Glib::ustring& tip,
  34                         const Glib::ustring& key, Inkscape::UI::Widget::Registry* wr,
  35                         Effect* effect, const gchar *htip, Geom::Point default_value)
  36     : Geom::Point(default_value), Parameter(label, tip, key, wr, effect), defvalue(default_value)
  37 {
  38     knot_shape = SP_KNOT_SHAPE_DIAMOND;
  39     knot_mode  = SP_KNOT_MODE_XOR;
  40     knot_color = 0xffffff00;
  41     handle_tip = g_strdup(htip);
  42 }
  43
  44 PointParam::~PointParam()
  45 {
  46     if (handle_tip)
  47         g_free(handle_tip);
  48 }
  49
  50 void
  51 PointParam::param_set_default()
  52 {
  53     param_setValue(defvalue);
  54 }
  55
  56 bool
  57 PointParam::param_readSVGValue(const gchar * strvalue)
  58 {
  59     gchar ** strarray = g_strsplit(strvalue, ",", 2);
  60     double newx, newy;
  61     unsigned int success = sp_svg_number_read_d(strarray[0], &newx);
  62     success += sp_svg_number_read_d(strarray[1], &newy);
  63     g_strfreev (strarray);
  64     if (success == 2) {
  65         param_setValue( Geom::Point(newx, newy) );
  66         return true;
  67     }
  68     return false;
  69 }
  70
  71 gchar *
  72 PointParam::param_getSVGValue() const
  73 {
  74     Inkscape::SVGOStringStream os;
  75     os << *dynamic_cast<Geom::Point const *>( this );
  76     gchar * str = g_strdup(os.str().c_str());
  77     return str;
  78 }
  79
  80 Gtk::Widget *
  81 PointParam::param_newWidget(Gtk::Tooltips * /*tooltips*/)
  82 {
  83     Inkscape::UI::Widget::RegisteredTransformedPoint * pointwdg = Gtk::manage(
  84         new Inkscape::UI::Widget::RegisteredTransformedPoint( param_label,
  85                                                               param_tooltip,
  86                                                               param_key,
  87                                                               *param_wr,
  88                                                               param_effect->getRepr(),
  89                                                               param_effect->getSPDoc() ) );
  90     // TODO: fix to get correct desktop (don't use SP_ACTIVE_DESKTOP)
  91     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
  92     Geom::Matrix transf = desktop->doc2dt();
  93     pointwdg->setTransform(transf);
  94     pointwdg->setValue( *this );
  95     pointwdg->clearProgrammatically();
  96     pointwdg->set_undo_parameters(SP_VERB_DIALOG_LIVE_PATH_EFFECT, _("Change point parameter"));
  97
  98     Gtk::HBox * hbox = Gtk::manage( new Gtk::HBox() );
  99     static_cast<Gtk::HBox*>(hbox)->pack_start(*pointwdg, true, true);
 100     static_cast<Gtk::HBox*>(hbox)->show_all_children();
 101
 102     return dynamic_cast<Gtk::Widget *> (hbox);
 103 }
 104
 105 void
 106 PointParam::param_setValue(Geom::Point newpoint)
 107 {
 108     *dynamic_cast<Geom::Point *>( this ) = newpoint;
 109 }
 110
 111 void
 112 PointParam::param_set_and_write_new_value (Geom::Point newpoint)
 113 {
 114     Inkscape::SVGOStringStream os;
 115     os << newpoint;
 116     gchar * str = g_strdup(os.str().c_str());
 117     param_write_to_repr(str);
 118     g_free(str);
 119 }
 120
 121 void
 122 PointParam::param_transform_multiply(Geom::Matrix const& postmul, bool /*set*/)
 123 {
 124     param_set_and_write_new_value( (*this) * postmul );
 125 }
 126
 127
 128 void
 129 PointParam::set_oncanvas_looks(SPKnotShapeType shape, SPKnotModeType mode, guint32 color)
 130 {
 131     knot_shape = shape;
 132     knot_mode  = mode;
 133     knot_color = color;
 134 }
 135
 136 class PointParamKnotHolderEntity : public LPEKnotHolderEntity {
 137 public:
 138     PointParamKnotHolderEntity(PointParam *p) { this->pparam = p; }
 139     virtual ~PointParamKnotHolderEntity() {}
 140
 141     virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state);
 142     virtual Geom::Point knot_get();
 143     virtual void knot_click(guint state);
 144
 145 private:
 146     PointParam *pparam;
 147 };
 148
 149 void
 150 PointParamKnotHolderEntity::knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint /*state*/)
 151 {
 152     Geom::Point const s = snap_knot_position(p);
 153     pparam->param_setValue(s);
 154     sp_lpe_item_update_patheffect(SP_LPE_ITEM(item), false, false);
 155 }
 156
 157 Geom::Point
 158 PointParamKnotHolderEntity::knot_get()
 159 {
 160     return *pparam;
 161 }
 162
 163 void
 164 PointParamKnotHolderEntity::knot_click(guint /*state*/)
 165 {
 166     g_print ("This is the handle associated to parameter '%s'\n", pparam->param_key.c_str());
 167 }
 168
 169 void
 170 PointParam::addKnotHolderEntities(KnotHolder *knotholder, SPDesktop *desktop, SPItem *item)
 171 {
 172     PointParamKnotHolderEntity *e = new PointParamKnotHolderEntity(this);
 173     // TODO: can we ditch handleTip() etc. because we have access to handle_tip etc. itself???
 174     e->create(desktop, item, knotholder, handleTip(), knot_shape, knot_mode, knot_color);
 175     knotholder->add(e);
 176
 177 }
 178
 179 } /* namespace LivePathEffect */
 180
 181 } /* namespace Inkscape */
 182
 183 /*
 184   Local Variables:
 185   mode:c++
 186   c-file-style:"stroustrup"
 187   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 188   indent-tabs-mode:nil
 189   fill-column:99
 190   End:
 191 */
 192 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :