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