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 event_dt(desktop->w2d(event_w));
82 SnapManager const &m = desktop->namedview->snap_manager;
83 event_dt = m.guideSnap(event_dt, component_vectors[horiz ? NR::Y : NR::X]).getPoint();
85 double const guide_pos_dt = event_dt[ horiz
86 ? NR::Y
87 : NR::X ];
89 sp_guideline_set_position(SP_GUIDELINE(guide), guide_pos_dt);
90 desktop->set_coordinate_status(event_dt);
91 desktop->setPosition (event_dt);
92 }
93 break;
94 case GDK_BUTTON_RELEASE:
95 if (dragging && event->button.button == 1) {
96 gdk_pointer_ungrab(event->button.time);
97 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
98 NR::Point event_dt(desktop->w2d(event_w));
100 SnapManager const &m = desktop->namedview->snap_manager;
101 event_dt = m.guideSnap(event_dt, component_vectors[horiz ? NR::Y : NR::X]).getPoint();
103 dragging = false;
104 gtk_object_destroy(GTK_OBJECT(guide));
105 guide = NULL;
106 if ((horiz ? wy : wx) >= 0) {
107 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
108 Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");
109 repr->setAttribute("orientation", (horiz) ? "horizontal" : "vertical");
110 double const guide_pos_dt = event_dt[ horiz
111 ? NR::Y
112 : NR::X ];
113 sp_repr_set_svg_double(repr, "position", guide_pos_dt);
114 SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);
115 Inkscape::GC::release(repr);
116 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
117 _("Create guide"));
118 }
119 desktop->set_coordinate_status(event_dt);
120 }
121 default:
122 break;
123 }
125 return FALSE;
126 }
128 int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
129 {
130 return sp_dt_ruler_event(widget, event, dtw, true);
131 }
133 int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
134 {
135 return sp_dt_ruler_event(widget, event, dtw, false);
136 }
138 /* Guides */
140 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
141 {
142 static bool dragging = false;
143 static bool moved = false;
144 gint ret = FALSE;
146 SPGuide *guide = SP_GUIDE(data);
147 SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
149 switch (event->type) {
150 case GDK_2BUTTON_PRESS:
151 if (event->button.button == 1) {
152 dragging = false;
153 sp_canvas_item_ungrab(item, event->button.time);
154 Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
155 ret = TRUE;
156 }
157 break;
158 case GDK_BUTTON_PRESS:
159 if (event->button.button == 1) {
160 dragging = true;
161 sp_canvas_item_grab(item,
162 ( GDK_BUTTON_RELEASE_MASK |
163 GDK_BUTTON_PRESS_MASK |
164 GDK_POINTER_MOTION_MASK ),
165 NULL,
166 event->button.time);
167 ret = TRUE;
168 }
169 break;
170 case GDK_MOTION_NOTIFY:
171 if (dragging) {
172 NR::Point const motion_w(event->motion.x,
173 event->motion.y);
174 NR::Point motion_dt(desktop->w2d(motion_w));
176 // This is for snapping while dragging existing guidelines. New guidelines,
177 // which are dragged off the ruler, are being snapped in sp_dt_ruler_event
178 SnapManager const &m = desktop->namedview->snap_manager;
179 motion_dt = m.guideSnap(motion_dt, guide->normal).getPoint();
181 sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, motion_dt), false);
182 moved = true;
183 desktop->set_coordinate_status(motion_dt);
184 desktop->setPosition (motion_dt);
185 ret = TRUE;
186 }
187 break;
188 case GDK_BUTTON_RELEASE:
189 if (dragging && event->button.button == 1) {
190 if (moved) {
191 NR::Point const event_w(event->button.x,
192 event->button.y);
193 NR::Point event_dt(desktop->w2d(event_w));
195 SnapManager const &m = desktop->namedview->snap_manager;
196 event_dt = m.guideSnap(event_dt, guide->normal).getPoint();
198 if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
199 sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, event_dt), true);
200 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
201 _("Move guide"));
202 } else {
203 /* Undo movement of any attached shapes. */
204 sp_guide_moveto(*guide, guide->position, false);
205 sp_guide_remove(guide);
206 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
207 _("Delete guide"));
208 }
209 moved = false;
210 desktop->set_coordinate_status(event_dt);
211 desktop->setPosition (event_dt);
212 }
213 dragging = false;
214 sp_canvas_item_ungrab(item, event->button.time);
215 ret=TRUE;
216 }
217 case GDK_ENTER_NOTIFY:
218 {
220 sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);
222 GString *position_string = SP_PX_TO_METRIC_STRING(guide->position, desktop->namedview->getDefaultMetric());
223 char *guide_description = sp_guide_description(guide);
225 desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("%s at %s"), guide_description, position_string->str);
227 g_free(guide_description);
228 g_string_free(position_string, TRUE);
229 break;
230 }
231 case GDK_LEAVE_NOTIFY:
232 sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
233 desktop->guidesMessageContext()->clear();
234 break;
235 default:
236 break;
237 }
239 return ret;
240 }
243 /*
244 Local Variables:
245 mode:c++
246 c-file-style:"stroustrup"
247 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
248 indent-tabs-mode:nil
249 fill-column:99
250 End:
251 */
252 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :