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"
34 /* 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 }
42 /*
43 * fixme: this conatins a hack, to deal with deleting a view, which is
44 * completely on another view, in which case active_desktop will not be updated
45 *
46 */
48 int sp_desktop_item_handler(SPCanvasItem *item, GdkEvent *event, gpointer data)
49 {
50 gpointer ddata = gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop");
51 g_return_val_if_fail(ddata != NULL, FALSE);
53 SPDesktop *desktop = static_cast<SPDesktop*>(ddata);
55 return sp_event_context_item_handler(desktop->event_context, SP_ITEM(data), event);
56 }
59 static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw, bool horiz)
60 {
61 static bool dragging = false;
62 static SPCanvasItem *guide = NULL;
63 int wx, wy;
65 SPDesktop *desktop = dtw->desktop;
66 Inkscape::XML::Node *repr = SP_OBJECT_REPR(desktop->namedview);
68 gdk_window_get_pointer(GTK_WIDGET(dtw->canvas)->window, &wx, &wy, NULL);
69 NR::Point const event_win(wx, wy);
71 switch (event->type) {
72 case GDK_BUTTON_PRESS:
73 if (event->button.button == 1) {
74 dragging = true;
75 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
76 NR::Point const event_dt(desktop->w2d(event_w));
78 // explicitly show guidelines; if I draw a guide, I want them on
79 sp_repr_set_boolean(repr, "showguides", TRUE);
80 sp_repr_set_boolean(repr, "inkscape:guide-bbox", TRUE);
82 double const guide_pos_dt = event_dt[ horiz
83 ? NR::Y
84 : NR::X ];
85 guide = sp_guideline_new(desktop->guides, guide_pos_dt, !horiz);
86 sp_guideline_set_color(SP_GUIDELINE(guide), desktop->namedview->guidehicolor);
87 gdk_pointer_grab(widget->window, FALSE,
88 (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ),
89 NULL, NULL,
90 event->button.time);
91 }
92 break;
93 case GDK_MOTION_NOTIFY:
94 if (dragging) {
95 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
96 NR::Point const event_dt(desktop->w2d(event_w));
97 double const guide_pos_dt = event_dt[ horiz
98 ? NR::Y
99 : NR::X ];
100 sp_guideline_set_position(SP_GUIDELINE(guide), guide_pos_dt);
101 desktop->set_coordinate_status(event_dt);
102 desktop->setPosition (event_dt);
103 }
104 break;
105 case GDK_BUTTON_RELEASE:
106 if (dragging && event->button.button == 1) {
107 gdk_pointer_ungrab(event->button.time);
108 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
109 NR::Point const event_dt(desktop->w2d(event_w));
110 dragging = false;
111 gtk_object_destroy(GTK_OBJECT(guide));
112 guide = NULL;
113 if ( ( horiz
114 ? wy
115 : wx )
116 >= 0 )
117 {
118 Inkscape::XML::Node *repr = sp_repr_new("sodipodi:guide");
119 repr->setAttribute("orientation", (horiz) ? "horizontal" : "vertical");
120 double const guide_pos_dt = event_dt[ horiz
121 ? NR::Y
122 : NR::X ];
123 sp_repr_set_svg_double(repr, "position", guide_pos_dt);
124 SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);
125 Inkscape::GC::release(repr);
126 sp_document_done(sp_desktop_document(desktop));
127 }
128 desktop->set_coordinate_status(event_dt);
129 }
130 default:
131 break;
132 }
134 return FALSE;
135 }
137 int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
138 {
139 return sp_dt_ruler_event(widget, event, dtw, true);
140 }
142 int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
143 {
144 return sp_dt_ruler_event(widget, event, dtw, false);
145 }
147 /* Guides */
149 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
150 {
151 static bool dragging = false;
152 static bool moved = false;
153 gint ret = FALSE;
155 SPGuide *guide = SP_GUIDE(data);
156 SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
158 switch (event->type) {
159 case GDK_2BUTTON_PRESS:
160 if (event->button.button == 1) {
161 dragging = false;
162 sp_canvas_item_ungrab(item, event->button.time);
163 Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
164 ret = TRUE;
165 }
166 break;
167 case GDK_BUTTON_PRESS:
168 if (event->button.button == 1) {
169 dragging = true;
170 sp_canvas_item_grab(item,
171 ( GDK_BUTTON_RELEASE_MASK |
172 GDK_BUTTON_PRESS_MASK |
173 GDK_POINTER_MOTION_MASK ),
174 NULL,
175 event->button.time);
176 ret = TRUE;
177 }
178 break;
179 case GDK_MOTION_NOTIFY:
180 if (dragging) {
181 NR::Point const motion_w(event->motion.x,
182 event->motion.y);
183 NR::Point const motion_dt(desktop->w2d(motion_w));
184 sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, motion_dt), false);
185 moved = true;
186 desktop->set_coordinate_status(motion_dt);
187 desktop->setPosition (motion_dt);
188 ret = TRUE;
189 }
190 break;
191 case GDK_BUTTON_RELEASE:
192 if (dragging && event->button.button == 1) {
193 if (moved) {
194 NR::Point const event_w(event->button.x,
195 event->button.y);
196 NR::Point const event_dt(desktop->w2d(event_w));
197 if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
198 sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, event_dt), true);
199 } else {
200 /* Undo movement of any attached shapes. */
201 sp_guide_moveto(*guide, guide->position, false);
202 sp_guide_remove(guide);
203 }
204 moved = false;
205 sp_document_done(sp_desktop_document(desktop));
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 :