1 /** \file
2 * Gtkmm facade/wrapper around SPRuler code that formerly lived
3 * in desktop-events.cpp
4 */
5 /*
6 * Authors:
7 * Ralf Stephan <ralf@ark.in-berlin.de>
8 * Lauris Kaplinski
9 *
10 * Copyright (C) 2005 Ralf Stephan
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 #ifdef HAVE_CONFIG_H
16 #include "config.h"
17 #endif
19 #include <glibmm/i18n.h>
21 #include <gtkmm/ruler.h>
22 #include "helper/units.h"
23 #include "widgets/ruler.h"
24 #include "ui/widget/ruler.h"
26 #include "xml/repr.h"
27 #include "display/guideline.h"
28 #include "desktop.h"
29 #include "desktop-handles.h"
30 #include "document.h"
31 #include "sp-namedview.h"
32 #include "verbs.h"
34 namespace Inkscape {
35 namespace UI {
36 namespace Widget {
38 void
39 Ruler::init(SPDesktop *dt, Gtk::Widget &w)
40 {
41 _dt = dt;
42 _canvas_widget = &w;
43 _dragging = false;
44 _guide = 0;
45 sp_ruler_set_metric(GTK_RULER(_r->gobj()), SP_PT);
46 _r->set_range(-500, 500, 0, 1000);
47 }
49 void
50 Ruler::get_range(double &lo, double &up, double &pos, double &max)
51 {
52 _r->get_range(lo, up, pos, max);
53 }
55 void
56 Ruler::set_range(double lo, double up, double pos, double max)
57 {
58 _r->set_range(lo, up, pos, max);
59 }
61 /// Set metric from namedview
62 void
63 Ruler::update_metric()
64 {
65 if (!_dt) return;
66 sp_ruler_set_metric(GTK_RULER(_r->gobj()), _dt->namedview->getDefaultMetric());
67 }
69 /// Returns text to be used for tooltip for ruler.
70 /// \todo incorrect
71 Glib::ustring
72 Ruler::get_tip()
73 {
74 return gettext(sp_unit_get_plural( _dt
75 ? _dt->namedview->doc_units
76 : &sp_unit_get_by_id(SP_UNIT_PT) ));
77 }
79 /// Helper that gets mouse coordinates relative to canvas widget.
80 void
81 Ruler::canvas_get_pointer(int &x, int &y)
82 {
83 Gdk::ModifierType mask;
84 (void) _canvas_widget->get_window()->get_pointer(x, y, mask);
85 }
87 NR::Point
88 Ruler::get_event_dt()
89 {
90 int wx, wy;
91 canvas_get_pointer(wx, wy);
92 NR::Point const event_win(wx, wy);
93 NR::Point const event_w(sp_canvas_window_to_world(_dt->canvas, event_win));
94 return _dt->w2d(event_w);
95 }
97 bool
98 Ruler::on_button_press_event(GdkEventButton *evb)
99 {
100 g_assert(_dt);
101 NR::Point const &event_dt = get_event_dt();
102 Inkscape::XML::Node *repr = SP_OBJECT_REPR(_dt->namedview);
104 if (evb->button == 1) {
105 _dragging = true;
106 sp_repr_set_boolean(repr, "showguides", TRUE);
107 sp_repr_set_boolean(repr, "inkscape:guide-bbox", TRUE);
108 _guide = sp_guideline_new(_dt->guides, event_dt.to_2geom(), _horiz_f ? Geom::Point(0.,1.) : Geom::Point(1.,0.));
109 sp_guideline_set_color(SP_GUIDELINE(_guide), _dt->namedview->guidehicolor);
110 (void) get_window()->pointer_grab(false,
111 Gdk::BUTTON_RELEASE_MASK |
112 Gdk::POINTER_MOTION_MASK |
113 Gdk::POINTER_MOTION_HINT_MASK,
114 evb->time);
115 }
116 return false;
117 }
119 bool
120 Ruler::on_motion_notify_event(GdkEventMotion *)
121 {
122 g_assert(_dt);
123 NR::Point const &event_dt = get_event_dt();
125 if (_dragging) {
126 sp_guideline_set_position(SP_GUIDELINE(_guide), event_dt.to_2geom());
127 _dt->set_coordinate_status(event_dt);
128 _dt->setPosition(event_dt);
129 }
130 return false;
131 }
133 bool
134 Ruler::on_button_release_event(GdkEventButton *evb)
135 {
136 g_assert(_dt);
137 int wx, wy;
138 canvas_get_pointer(wx, wy);
139 NR::Point const &event_dt = get_event_dt();
141 if (_dragging && evb->button == 1) {
142 Gdk::Window::pointer_ungrab(evb->time);
143 gtk_object_destroy(GTK_OBJECT(_guide));
144 _guide = 0;
145 _dragging = false;
147 if ( (_horiz_f ? wy : wx ) >= 0 ) {
148 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(_dt->doc());
149 Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");
150 repr->setAttribute("orientation", _horiz_f ? "horizontal" : "vertical");
151 double const guide_pos_dt = event_dt[ _horiz_f ? NR::Y : NR::X ];
152 sp_repr_set_svg_double(repr, "position", guide_pos_dt);
153 SP_OBJECT_REPR(_dt->namedview)->appendChild(repr);
154 Inkscape::GC::release(repr);
155 sp_document_done(sp_desktop_document(_dt), SP_VERB_NONE,
156 /* TODO: annotate */ "ruler.cpp:157");
157 }
158 _dt->set_coordinate_status(event_dt);
159 }
160 return false;
161 }
163 //------------------------------------------------------------
164 HRuler::HRuler()
165 {
166 _dt = 0;
167 _r = static_cast<Gtk::HRuler*>(Glib::wrap(static_cast<GtkWidget*> (sp_hruler_new())));
168 add(*_r);
169 _horiz_f = true;
170 }
172 HRuler::~HRuler()
173 {
174 }
177 VRuler::VRuler()
178 {
179 _dt = 0;
180 _r = static_cast<Gtk::VRuler*>(Glib::wrap(static_cast<GtkWidget*> (sp_vruler_new())));
181 add(*_r);
182 _horiz_f = false;
183 }
185 VRuler::~VRuler()
186 {
187 }
189 }}}
191 /*
192 Local Variables:
193 mode:c++
194 c-file-style:"stroustrup"
195 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
196 indent-tabs-mode:nil
197 fill-column:99
198 End:
199 */
200 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :