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 guide = sp_guideline_new(desktop->guides, event_dt.to_2geom(), horiz ? Geom::Point(0.,1.) : Geom::Point(1.,0.));
67 sp_guideline_set_color(SP_GUIDELINE(guide), desktop->namedview->guidehicolor);
68 gdk_pointer_grab(widget->window, FALSE,
69 (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ),
70 NULL, NULL,
71 event->button.time);
72 }
73 break;
74 case GDK_MOTION_NOTIFY:
75 if (dragging) {
76 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
77 NR::Point event_dt(desktop->w2d(event_w));
79 SnapManager const &m = desktop->namedview->snap_manager;
80 event_dt = m.guideSnap(event_dt, component_vectors[horiz ? NR::Y : NR::X]).getPoint();
82 sp_guideline_set_position(SP_GUIDELINE(guide), event_dt.to_2geom());
83 desktop->set_coordinate_status(event_dt);
84 desktop->setPosition (event_dt);
85 }
86 break;
87 case GDK_BUTTON_RELEASE:
88 if (dragging && event->button.button == 1) {
89 gdk_pointer_ungrab(event->button.time);
90 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
91 NR::Point event_dt(desktop->w2d(event_w));
93 SnapManager const &m = desktop->namedview->snap_manager;
94 event_dt = m.guideSnap(event_dt, component_vectors[horiz ? NR::Y : NR::X]).getPoint();
96 dragging = false;
97 gtk_object_destroy(GTK_OBJECT(guide));
98 guide = NULL;
99 if ((horiz ? wy : wx) >= 0) {
100 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
101 Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");
102 repr->setAttribute("orientation", (horiz) ? "horizontal" : "vertical");
103 sp_repr_set_svg_point(repr, "position", event_dt.to_2geom());
104 SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);
105 Inkscape::GC::release(repr);
106 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
107 _("Create guide"));
108 }
109 desktop->set_coordinate_status(event_dt);
110 }
111 default:
112 break;
113 }
115 return FALSE;
116 }
118 int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
119 {
120 return sp_dt_ruler_event(widget, event, dtw, true);
121 }
123 int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
124 {
125 return sp_dt_ruler_event(widget, event, dtw, false);
126 }
128 /* Guides */
130 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
131 {
132 static bool dragging = false;
133 static bool moved = false;
134 gint ret = FALSE;
136 SPGuide *guide = SP_GUIDE(data);
137 SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
139 switch (event->type) {
140 case GDK_2BUTTON_PRESS:
141 if (event->button.button == 1) {
142 dragging = false;
143 sp_canvas_item_ungrab(item, event->button.time);
144 Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
145 ret = TRUE;
146 }
147 break;
148 case GDK_BUTTON_PRESS:
149 if (event->button.button == 1) {
150 dragging = true;
151 sp_canvas_item_grab(item,
152 ( GDK_BUTTON_RELEASE_MASK |
153 GDK_BUTTON_PRESS_MASK |
154 GDK_POINTER_MOTION_MASK ),
155 NULL,
156 event->button.time);
157 ret = TRUE;
158 }
159 break;
160 case GDK_MOTION_NOTIFY:
161 if (dragging) {
162 NR::Point const motion_w(event->motion.x,
163 event->motion.y);
164 NR::Point motion_dt(desktop->w2d(motion_w));
166 // This is for snapping while dragging existing guidelines. New guidelines,
167 // which are dragged off the ruler, are being snapped in sp_dt_ruler_event
168 SnapManager const &m = desktop->namedview->snap_manager;
169 motion_dt = m.guideSnap(motion_dt, guide->normal_to_line).getPoint();
171 sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, motion_dt), false);
172 moved = true;
173 desktop->set_coordinate_status(motion_dt);
174 desktop->setPosition (motion_dt);
175 ret = TRUE;
176 }
177 break;
178 case GDK_BUTTON_RELEASE:
179 if (dragging && event->button.button == 1) {
180 if (moved) {
181 NR::Point const event_w(event->button.x,
182 event->button.y);
183 NR::Point event_dt(desktop->w2d(event_w));
185 SnapManager const &m = desktop->namedview->snap_manager;
186 event_dt = m.guideSnap(event_dt, guide->normal_to_line).getPoint();
188 if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
189 sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, event_dt), true);
190 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
191 _("Move guide"));
192 } else {
193 /* Undo movement of any attached shapes. */
194 sp_guide_moveto(*guide, guide->point_on_line, false);
195 sp_guide_remove(guide);
196 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
197 _("Delete guide"));
198 }
199 moved = false;
200 desktop->set_coordinate_status(event_dt);
201 desktop->setPosition (event_dt);
202 }
203 dragging = false;
204 sp_canvas_item_ungrab(item, event->button.time);
205 ret=TRUE;
206 }
207 case GDK_ENTER_NOTIFY:
208 {
209 sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);
211 char *guide_description = sp_guide_description(guide);
212 desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, "%s", guide_description);
213 g_free(guide_description);
214 break;
215 }
216 case GDK_LEAVE_NOTIFY:
217 sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
218 desktop->guidesMessageContext()->clear();
219 break;
220 default:
221 break;
222 }
224 return ret;
225 }
228 /*
229 Local Variables:
230 mode:c++
231 c-file-style:"stroustrup"
232 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
233 indent-tabs-mode:nil
234 fill-column:99
235 End:
236 */
237 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :