1 #define __SP_DESKTOP_EVENTS_C__
3 /*
4 * Event handlers for SPDesktop
5 *
6 * Author:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 *
9 * Copyright (C) 1999-2002 Lauris Kaplinski
10 *
11 * Released under GNU GPL, read the file 'COPYING' for more information
12 */
14 #ifdef HAVE_CONFIG_H
15 # include <config.h>
16 #endif
17 #include "display/guideline.h"
18 #include "helper/unit-menu.h"
19 #include "helper/units.h"
20 #include "desktop.h"
21 #include "document.h"
22 #include "sp-guide.h"
23 #include "sp-namedview.h"
24 #include "desktop-handles.h"
25 #include "event-context.h"
26 #include "widgets/desktop-widget.h"
27 #include "sp-metrics.h"
28 #include <glibmm/i18n.h>
29 #include "dialogs/dialog-events.h"
30 #include "message-context.h"
31 #include "xml/repr.h"
32 #include "dialogs/guidelinedialog.h"
33 #include "snap.h"
35 /* Root item handler */
37 int sp_desktop_root_handler(SPCanvasItem *item, GdkEvent *event, SPDesktop *desktop)
38 {
39 return sp_event_context_root_handler(desktop->event_context, event);
40 }
43 static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw, bool horiz)
44 {
45 static bool dragging = false;
46 static SPCanvasItem *guide = NULL;
47 int wx, wy;
49 SPDesktop *desktop = dtw->desktop;
50 Inkscape::XML::Node *repr = SP_OBJECT_REPR(desktop->namedview);
52 gdk_window_get_pointer(GTK_WIDGET(dtw->canvas)->window, &wx, &wy, NULL);
53 NR::Point const event_win(wx, wy);
55 switch (event->type) {
56 case GDK_BUTTON_PRESS:
57 if (event->button.button == 1) {
58 dragging = true;
59 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
60 NR::Point const event_dt(desktop->w2d(event_w));
62 // explicitly show guidelines; if I draw a guide, I want them on
63 sp_repr_set_boolean(repr, "showguides", TRUE);
64 sp_repr_set_boolean(repr, "inkscape:guide-bbox", TRUE);
66 double const guide_pos_dt = event_dt[ horiz
67 ? NR::Y
68 : NR::X ];
69 guide = sp_guideline_new(desktop->guides, guide_pos_dt, !horiz);
70 sp_guideline_set_color(SP_GUIDELINE(guide), desktop->namedview->guidehicolor);
71 gdk_pointer_grab(widget->window, FALSE,
72 (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ),
73 NULL, NULL,
74 event->button.time);
75 }
76 break;
77 case GDK_MOTION_NOTIFY:
78 if (dragging) {
79 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
80 NR::Point const event_dt(desktop->w2d(event_w));
81 double const guide_pos_dt = event_dt[ horiz
82 ? NR::Y
83 : NR::X ];
84 sp_guideline_set_position(SP_GUIDELINE(guide), guide_pos_dt);
85 desktop->set_coordinate_status(event_dt);
86 desktop->setPosition (event_dt);
87 }
88 break;
89 case GDK_BUTTON_RELEASE:
90 if (dragging && event->button.button == 1) {
91 gdk_pointer_ungrab(event->button.time);
92 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
93 NR::Point const event_dt(desktop->w2d(event_w));
94 dragging = false;
95 gtk_object_destroy(GTK_OBJECT(guide));
96 guide = NULL;
97 if ( ( horiz
98 ? wy
99 : wx )
100 >= 0 )
101 {
102 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
103 Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");
104 repr->setAttribute("orientation", (horiz) ? "horizontal" : "vertical");
105 double const guide_pos_dt = event_dt[ horiz
106 ? NR::Y
107 : NR::X ];
108 sp_repr_set_svg_double(repr, "position", guide_pos_dt);
109 SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);
110 Inkscape::GC::release(repr);
111 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
112 _("Create guide"));
113 }
114 desktop->set_coordinate_status(event_dt);
115 }
116 default:
117 break;
118 }
120 return FALSE;
121 }
123 int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
124 {
125 return sp_dt_ruler_event(widget, event, dtw, true);
126 }
128 int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
129 {
130 return sp_dt_ruler_event(widget, event, dtw, false);
131 }
133 /* Guides */
135 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
136 {
137 static bool dragging = false;
138 static bool moved = false;
139 gint ret = FALSE;
141 SPGuide *guide = SP_GUIDE(data);
142 SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
144 switch (event->type) {
145 case GDK_2BUTTON_PRESS:
146 if (event->button.button == 1) {
147 dragging = false;
148 sp_canvas_item_ungrab(item, event->button.time);
149 Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
150 ret = TRUE;
151 }
152 break;
153 case GDK_BUTTON_PRESS:
154 if (event->button.button == 1) {
155 dragging = true;
156 sp_canvas_item_grab(item,
157 ( GDK_BUTTON_RELEASE_MASK |
158 GDK_BUTTON_PRESS_MASK |
159 GDK_POINTER_MOTION_MASK ),
160 NULL,
161 event->button.time);
162 ret = TRUE;
163 }
164 break;
165 case GDK_MOTION_NOTIFY:
166 if (dragging) {
167 NR::Point const motion_w(event->motion.x,
168 event->motion.y);
169 NR::Point motion_dt(desktop->w2d(motion_w));
171 SnapManager const &m = desktop->namedview->snap_manager;
172 motion_dt = m.guideSnap(motion_dt, *guide).getPoint();
174 sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, motion_dt), false);
175 moved = true;
176 desktop->set_coordinate_status(motion_dt);
177 desktop->setPosition (motion_dt);
178 ret = TRUE;
179 }
180 break;
181 case GDK_BUTTON_RELEASE:
182 if (dragging && event->button.button == 1) {
183 if (moved) {
184 NR::Point const event_w(event->button.x,
185 event->button.y);
186 NR::Point event_dt(desktop->w2d(event_w));
188 //If we don't snap here again, it will end up at the current mouse position
189 //whereas it might have been at a snapped position a millisecond before.
190 //See GDK_MOTION_NOTIFY above. Why's that????
191 SnapManager const &m = desktop->namedview->snap_manager;
192 event_dt = m.guideSnap(event_dt, *guide).getPoint();
194 if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
195 sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, event_dt), true);
196 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
197 _("Move guide"));
198 } else {
199 /* Undo movement of any attached shapes. */
200 sp_guide_moveto(*guide, guide->position, false);
201 sp_guide_remove(guide);
202 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
203 _("Delete guide"));
204 }
205 moved = false;
206 desktop->set_coordinate_status(event_dt);
207 desktop->setPosition (event_dt);
208 }
209 dragging = false;
210 sp_canvas_item_ungrab(item, event->button.time);
211 ret=TRUE;
212 }
213 case GDK_ENTER_NOTIFY:
214 {
216 sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);
218 GString *position_string = SP_PX_TO_METRIC_STRING(guide->position, desktop->namedview->getDefaultMetric());
219 char *guide_description = sp_guide_description(guide);
221 desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("%s at %s"), guide_description, position_string->str);
223 g_free(guide_description);
224 g_string_free(position_string, TRUE);
225 break;
226 }
227 case GDK_LEAVE_NOTIFY:
228 sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
229 desktop->guidesMessageContext()->clear();
230 break;
231 default:
232 break;
233 }
235 return ret;
236 }
239 /*
240 Local Variables:
241 mode:c++
242 c-file-style:"stroustrup"
243 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
244 indent-tabs-mode:nil
245 fill-column:99
246 End:
247 */
248 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :