d5158255abe473f0f700032445257229a59c8b2c
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"
34 #include "display/canvas-grid.h"
35 #include "display/canvas-axonomgrid.h"
36 #include <2geom/point.h>
38 /* Root item handler */
40 int sp_desktop_root_handler(SPCanvasItem */*item*/, GdkEvent *event, SPDesktop *desktop)
41 {
42 return sp_event_context_root_handler(desktop->event_context, event);
43 }
46 static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw, bool horiz)
47 {
48 static bool dragging = false;
49 static SPCanvasItem *guide = NULL;
50 static Geom::Point normal;
51 int wx, wy;
53 SPDesktop *desktop = dtw->desktop;
54 Inkscape::XML::Node *repr = SP_OBJECT_REPR(desktop->namedview);
56 gdk_window_get_pointer(GTK_WIDGET(dtw->canvas)->window, &wx, &wy, NULL);
57 NR::Point const event_win(wx, wy);
59 gint width, height;
60 gdk_window_get_geometry(GTK_WIDGET(dtw->canvas)->window, NULL /*x*/, NULL /*y*/, &width, &height, NULL/*depth*/);
62 switch (event->type) {
63 case GDK_BUTTON_PRESS:
64 if (event->button.button == 1) {
65 dragging = true;
66 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
67 NR::Point const event_dt(desktop->w2d(event_w));
69 // explicitly show guidelines; if I draw a guide, I want them on
70 sp_repr_set_boolean(repr, "showguides", TRUE);
71 sp_repr_set_boolean(repr, "inkscape:guide-bbox", TRUE);
73 // calculate the normal of the guidelines when dragged from the edges of rulers.
74 Geom::Point normal_bl_to_tr(-1.,1.); //bottomleft to topright
75 Geom::Point normal_tr_to_bl(1.,1.); //topright to bottomleft
76 normal_bl_to_tr.normalize();
77 normal_tr_to_bl.normalize();
78 Inkscape::CanvasGrid * grid = sp_namedview_get_first_enabled_grid(desktop->namedview);
79 if ( grid && grid->getGridType() == Inkscape::GRID_AXONOMETRIC ) {
80 Inkscape::CanvasAxonomGrid *axonomgrid = dynamic_cast<Inkscape::CanvasAxonomGrid *>(grid);
81 if (event->button.state & GDK_CONTROL_MASK) {
82 // guidelines normal to gridlines
83 normal_bl_to_tr = Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0);
84 normal_tr_to_bl = Geom::Point::polar(axonomgrid->angle_rad[2], 1.0);
85 } else {
86 normal_bl_to_tr = rot90(Geom::Point::polar(axonomgrid->angle_rad[2], 1.0));
87 normal_tr_to_bl = rot90(Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0));
88 }
89 }
90 if (horiz) {
91 if (wx < 50) {
92 normal = normal_bl_to_tr;
93 } else if (wx > width - 50) {
94 normal = normal_tr_to_bl;
95 } else {
96 normal = Geom::Point(0.,1.);
97 }
98 } else {
99 if (wy < 50) {
100 normal = normal_bl_to_tr;
101 } else if (wy > height - 50) {
102 normal = normal_tr_to_bl;
103 } else {
104 normal = Geom::Point(1.,0.);
105 }
106 }
108 guide = sp_guideline_new(desktop->guides, event_dt.to_2geom(), normal);
109 sp_guideline_set_color(SP_GUIDELINE(guide), desktop->namedview->guidehicolor);
110 gdk_pointer_grab(widget->window, FALSE,
111 (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ),
112 NULL, NULL,
113 event->button.time);
114 }
115 break;
116 case GDK_MOTION_NOTIFY:
117 if (dragging) {
118 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
119 NR::Point event_dt(desktop->w2d(event_w));
121 SnapManager const &m = desktop->namedview->snap_manager;
122 event_dt = m.guideSnap(event_dt, normal).getPoint();
124 sp_guideline_set_position(SP_GUIDELINE(guide), event_dt.to_2geom());
125 desktop->set_coordinate_status(event_dt);
126 desktop->setPosition (event_dt);
127 }
128 break;
129 case GDK_BUTTON_RELEASE:
130 if (dragging && event->button.button == 1) {
131 gdk_pointer_ungrab(event->button.time);
132 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
133 NR::Point event_dt(desktop->w2d(event_w));
135 SnapManager const &m = desktop->namedview->snap_manager;
136 event_dt = m.guideSnap(event_dt, normal).getPoint();
138 dragging = false;
139 gtk_object_destroy(GTK_OBJECT(guide));
140 guide = NULL;
141 if ((horiz ? wy : wx) >= 0) {
142 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
143 Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");
144 sp_repr_set_point(repr, "orientation", normal);
145 sp_repr_set_point(repr, "position", event_dt.to_2geom());
146 SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);
147 Inkscape::GC::release(repr);
148 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
149 _("Create guide"));
150 }
151 desktop->set_coordinate_status(event_dt);
152 }
153 default:
154 break;
155 }
157 return FALSE;
158 }
160 int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
161 {
162 return sp_dt_ruler_event(widget, event, dtw, true);
163 }
165 int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
166 {
167 return sp_dt_ruler_event(widget, event, dtw, false);
168 }
170 /* Guides */
172 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
173 {
174 static bool dragging = false;
175 static bool moved = false;
176 gint ret = FALSE;
178 SPGuide *guide = SP_GUIDE(data);
179 SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
181 switch (event->type) {
182 case GDK_2BUTTON_PRESS:
183 if (event->button.button == 1) {
184 dragging = false;
185 sp_canvas_item_ungrab(item, event->button.time);
186 Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
187 ret = TRUE;
188 }
189 break;
190 case GDK_BUTTON_PRESS:
191 if (event->button.button == 1) {
192 dragging = true;
193 sp_canvas_item_grab(item,
194 ( GDK_BUTTON_RELEASE_MASK |
195 GDK_BUTTON_PRESS_MASK |
196 GDK_POINTER_MOTION_MASK ),
197 NULL,
198 event->button.time);
199 ret = TRUE;
200 }
201 break;
202 case GDK_MOTION_NOTIFY:
203 if (dragging) {
204 NR::Point const motion_w(event->motion.x,
205 event->motion.y);
206 NR::Point motion_dt(desktop->w2d(motion_w));
208 // This is for snapping while dragging existing guidelines. New guidelines,
209 // which are dragged off the ruler, are being snapped in sp_dt_ruler_event
210 SnapManager const &m = desktop->namedview->snap_manager;
211 motion_dt = m.guideSnap(motion_dt, guide->normal_to_line).getPoint();
213 sp_guide_moveto(*guide, motion_dt.to_2geom(), false);
214 moved = true;
215 desktop->set_coordinate_status(motion_dt);
216 desktop->setPosition (motion_dt);
217 ret = TRUE;
218 }
219 break;
220 case GDK_BUTTON_RELEASE:
221 if (dragging && event->button.button == 1) {
222 if (moved) {
223 NR::Point const event_w(event->button.x,
224 event->button.y);
225 NR::Point event_dt(desktop->w2d(event_w));
227 SnapManager const &m = desktop->namedview->snap_manager;
228 event_dt = m.guideSnap(event_dt, guide->normal_to_line).getPoint();
230 if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
231 sp_guide_moveto(*guide, event_dt.to_2geom(), true);
232 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
233 _("Move guide"));
234 } else {
235 /* Undo movement of any attached shapes. */
236 sp_guide_moveto(*guide, guide->point_on_line, false);
237 sp_guide_remove(guide);
238 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
239 _("Delete guide"));
240 }
241 moved = false;
242 desktop->set_coordinate_status(event_dt);
243 desktop->setPosition (event_dt);
244 }
245 dragging = false;
246 sp_canvas_item_ungrab(item, event->button.time);
247 ret=TRUE;
248 }
249 case GDK_ENTER_NOTIFY:
250 {
251 sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);
253 char *guide_description = sp_guide_description(guide);
254 desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, "%s", guide_description);
255 g_free(guide_description);
256 break;
257 }
258 case GDK_LEAVE_NOTIFY:
259 sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
260 desktop->guidesMessageContext()->clear();
261 break;
262 default:
263 break;
264 }
266 return ret;
267 }
270 /*
271 Local Variables:
272 mode:c++
273 c-file-style:"stroustrup"
274 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
275 indent-tabs-mode:nil
276 fill-column:99
277 End:
278 */
279 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :