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 <map>
18 #include <string>
19 #include "display/guideline.h"
20 #include "display/snap-indicator.h"
21 #include "helper/unit-menu.h"
22 #include "helper/units.h"
23 #include "desktop.h"
24 #include "document.h"
25 #include "sp-guide.h"
26 #include "sp-namedview.h"
27 #include "desktop-handles.h"
28 #include "event-context.h"
29 #include "widgets/desktop-widget.h"
30 #include "sp-metrics.h"
31 #include <glibmm/i18n.h>
32 #include "dialogs/dialog-events.h"
33 #include "message-context.h"
34 #include "xml/repr.h"
35 #include "dialogs/guidelinedialog.h"
36 #include "snap.h"
37 #include "display/canvas-grid.h"
38 #include "display/canvas-axonomgrid.h"
39 #include "prefs-utils.h"
40 #include "helper/action.h"
41 #include "tools-switch.h"
42 #include <2geom/point.h>
44 static void snoop_extended(GdkEvent* event, SPDesktop *desktop);
45 static void init_extended();
47 /* Root item handler */
49 int sp_desktop_root_handler(SPCanvasItem */*item*/, GdkEvent *event, SPDesktop *desktop)
50 {
51 static bool watch = false;
52 static bool first = true;
54 if ( first ) {
55 if ( prefs_get_int_attribute("options.useextinput", "value", 1)
56 && prefs_get_int_attribute("options.switchonextinput", "value", 0) ) {
57 watch = true;
58 init_extended();
59 }
60 first = false;
61 }
62 if ( watch ) {
63 snoop_extended(event, desktop);
64 }
66 return sp_event_context_root_handler(desktop->event_context, event);
67 }
70 static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw, bool horiz)
71 {
72 static bool dragging = false;
73 static SPCanvasItem *guide = NULL;
74 static Geom::Point normal;
75 int wx, wy;
77 SPDesktop *desktop = dtw->desktop;
78 Inkscape::XML::Node *repr = SP_OBJECT_REPR(desktop->namedview);
80 gdk_window_get_pointer(GTK_WIDGET(dtw->canvas)->window, &wx, &wy, NULL);
81 NR::Point const event_win(wx, wy);
83 gint width, height;
84 gdk_window_get_geometry(GTK_WIDGET(dtw->canvas)->window, NULL /*x*/, NULL /*y*/, &width, &height, NULL/*depth*/);
86 switch (event->type) {
87 case GDK_BUTTON_PRESS:
88 if (event->button.button == 1) {
89 dragging = true;
90 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
91 NR::Point const event_dt(desktop->w2d(event_w));
93 // explicitly show guidelines; if I draw a guide, I want them on
94 sp_repr_set_boolean(repr, "showguides", TRUE);
95 sp_repr_set_boolean(repr, "inkscape:guide-bbox", TRUE);
97 // calculate the normal of the guidelines when dragged from the edges of rulers.
98 Geom::Point normal_bl_to_tr(-1.,1.); //bottomleft to topright
99 Geom::Point normal_tr_to_bl(1.,1.); //topright to bottomleft
100 normal_bl_to_tr.normalize();
101 normal_tr_to_bl.normalize();
102 Inkscape::CanvasGrid * grid = sp_namedview_get_first_enabled_grid(desktop->namedview);
103 if ( grid && grid->getGridType() == Inkscape::GRID_AXONOMETRIC ) {
104 Inkscape::CanvasAxonomGrid *axonomgrid = dynamic_cast<Inkscape::CanvasAxonomGrid *>(grid);
105 if (event->button.state & GDK_CONTROL_MASK) {
106 // guidelines normal to gridlines
107 normal_bl_to_tr = Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0);
108 normal_tr_to_bl = Geom::Point::polar(axonomgrid->angle_rad[2], 1.0);
109 } else {
110 normal_bl_to_tr = rot90(Geom::Point::polar(axonomgrid->angle_rad[2], 1.0));
111 normal_tr_to_bl = rot90(Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0));
112 }
113 }
114 if (horiz) {
115 if (wx < 50) {
116 normal = normal_bl_to_tr;
117 } else if (wx > width - 50) {
118 normal = normal_tr_to_bl;
119 } else {
120 normal = Geom::Point(0.,1.);
121 }
122 } else {
123 if (wy < 50) {
124 normal = normal_bl_to_tr;
125 } else if (wy > height - 50) {
126 normal = normal_tr_to_bl;
127 } else {
128 normal = Geom::Point(1.,0.);
129 }
130 }
132 guide = sp_guideline_new(desktop->guides, event_dt.to_2geom(), normal);
133 sp_guideline_set_color(SP_GUIDELINE(guide), desktop->namedview->guidehicolor);
134 gdk_pointer_grab(widget->window, FALSE,
135 (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ),
136 NULL, NULL,
137 event->button.time);
138 }
139 break;
140 case GDK_MOTION_NOTIFY:
141 if (dragging) {
142 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
143 NR::Point event_dt(desktop->w2d(event_w));
145 SnapManager &m = desktop->namedview->snap_manager;
146 m.setup(desktop);
147 m.guideSnap(event_dt, normal);
149 sp_guideline_set_position(SP_GUIDELINE(guide), event_dt.to_2geom());
150 desktop->set_coordinate_status(event_dt);
151 desktop->setPosition (event_dt);
152 }
153 break;
154 case GDK_BUTTON_RELEASE:
155 if (dragging && event->button.button == 1) {
156 gdk_pointer_ungrab(event->button.time);
157 NR::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
158 NR::Point event_dt(desktop->w2d(event_w));
160 SnapManager &m = desktop->namedview->snap_manager;
161 m.setup(desktop);
162 m.guideSnap(event_dt, normal);
164 dragging = false;
165 gtk_object_destroy(GTK_OBJECT(guide));
166 guide = NULL;
167 if ((horiz ? wy : wx) >= 0) {
168 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
169 Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");
170 sp_repr_set_point(repr, "orientation", normal);
171 sp_repr_set_point(repr, "position", event_dt.to_2geom());
172 SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);
173 Inkscape::GC::release(repr);
174 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
175 _("Create guide"));
176 }
177 desktop->set_coordinate_status(event_dt);
178 }
179 default:
180 break;
181 }
183 return FALSE;
184 }
186 int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
187 {
188 return sp_dt_ruler_event(widget, event, dtw, true);
189 }
191 int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
192 {
193 return sp_dt_ruler_event(widget, event, dtw, false);
194 }
196 /* Guides */
198 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
199 {
200 static bool dragging = false;
201 static bool moved = false;
202 gint ret = FALSE;
204 SPGuide *guide = SP_GUIDE(data);
205 SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
207 switch (event->type) {
208 case GDK_2BUTTON_PRESS:
209 if (event->button.button == 1) {
210 dragging = false;
211 sp_canvas_item_ungrab(item, event->button.time);
212 Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
213 ret = TRUE;
214 }
215 break;
216 case GDK_BUTTON_PRESS:
217 if (event->button.button == 1) {
218 if (event->button.state & GDK_CONTROL_MASK) {
219 SPDocument *doc = SP_OBJECT_DOCUMENT(guide);
220 sp_guide_remove(guide);
221 sp_document_done(doc, SP_VERB_NONE, _("Delete guide"));
222 ret = TRUE;
223 break;
224 }
225 dragging = true;
226 sp_canvas_item_grab(item,
227 ( GDK_BUTTON_RELEASE_MASK |
228 GDK_BUTTON_PRESS_MASK |
229 GDK_POINTER_MOTION_MASK ),
230 NULL,
231 event->button.time);
232 ret = TRUE;
233 }
234 break;
235 case GDK_MOTION_NOTIFY:
236 if (dragging) {
237 NR::Point const motion_w(event->motion.x,
238 event->motion.y);
239 NR::Point motion_dt(desktop->w2d(motion_w));
241 // This is for snapping while dragging existing guidelines. New guidelines,
242 // which are dragged off the ruler, are being snapped in sp_dt_ruler_event
243 SnapManager &m = desktop->namedview->snap_manager;
244 m.setup(desktop);
245 m.guideSnap(motion_dt, guide->normal_to_line);
247 sp_guide_moveto(*guide, motion_dt.to_2geom(), false);
248 moved = true;
249 desktop->set_coordinate_status(motion_dt);
250 desktop->setPosition (motion_dt);
252 ret = TRUE;
253 }
254 break;
255 case GDK_BUTTON_RELEASE:
256 if (dragging && event->button.button == 1) {
257 if (moved) {
258 NR::Point const event_w(event->button.x,
259 event->button.y);
260 NR::Point event_dt(desktop->w2d(event_w));
262 SnapManager &m = desktop->namedview->snap_manager;
263 m.setup(desktop);
264 m.guideSnap(event_dt, guide->normal_to_line);
266 if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
267 sp_guide_moveto(*guide, event_dt.to_2geom(), true);
268 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
269 _("Move guide"));
270 } else {
271 /* Undo movement of any attached shapes. */
272 sp_guide_moveto(*guide, guide->point_on_line, false);
273 sp_guide_remove(guide);
274 sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
275 _("Delete guide"));
276 }
277 moved = false;
278 desktop->set_coordinate_status(event_dt);
279 desktop->setPosition (event_dt);
280 }
281 dragging = false;
282 sp_canvas_item_ungrab(item, event->button.time);
283 ret=TRUE;
284 }
285 case GDK_ENTER_NOTIFY:
286 {
287 sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);
289 char *guide_description = sp_guide_description(guide);
290 desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("<b>Guideline</b>: %s"), guide_description);
291 g_free(guide_description);
292 break;
293 }
294 case GDK_LEAVE_NOTIFY:
295 sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
296 desktop->guidesMessageContext()->clear();
297 break;
298 default:
299 break;
300 }
302 return ret;
303 }
305 static std::map<GdkInputSource, std::string> switchMap;
306 static std::map<GdkInputSource, int> toolToUse;
307 static std::string lastName;
308 static GdkInputSource lastType = GDK_SOURCE_MOUSE;
310 static void init_extended()
311 {
312 std::string avoidName = "pad";
313 GList* devices = gdk_devices_list();
314 if ( devices ) {
315 for ( GList* curr = devices; curr; curr = g_list_next(curr) ) {
316 GdkDevice* dev = reinterpret_cast<GdkDevice*>(curr->data);
317 if ( dev->name
318 && (avoidName != dev->name)
319 && (switchMap.find(dev->source) == switchMap.end())
320 && (dev->source != GDK_SOURCE_MOUSE) ) {
321 switchMap[dev->source] = dev->name;
322 // g_message("Adding '%s' as [%d]", dev->name, dev->source);
324 // Set the initial tool for the device
325 switch ( dev->source ) {
326 case GDK_SOURCE_PEN:
327 toolToUse[GDK_SOURCE_PEN] = TOOLS_CALLIGRAPHIC;
328 break;
329 case GDK_SOURCE_ERASER:
330 toolToUse[GDK_SOURCE_ERASER] = TOOLS_ERASER;
331 break;
332 case GDK_SOURCE_CURSOR:
333 toolToUse[GDK_SOURCE_CURSOR] = TOOLS_SELECT;
334 break;
335 default:
336 ; // do not add
337 }
338 // } else {
339 // g_message("Skippn '%s' as [%s]", dev->name, namefor(dev->source));
340 }
341 }
342 }
343 }
346 void snoop_extended(GdkEvent* event, SPDesktop *desktop)
347 {
348 GdkInputSource source = GDK_SOURCE_MOUSE;
349 std::string name;
351 switch ( event->type ) {
352 case GDK_MOTION_NOTIFY:
353 {
354 GdkEventMotion* event2 = reinterpret_cast<GdkEventMotion*>(event);
355 if ( event2->device ) {
356 source = event2->device->source;
357 name = event2->device->name;
358 }
359 }
360 break;
362 case GDK_BUTTON_PRESS:
363 case GDK_2BUTTON_PRESS:
364 case GDK_3BUTTON_PRESS:
365 case GDK_BUTTON_RELEASE:
366 {
367 GdkEventButton* event2 = reinterpret_cast<GdkEventButton*>(event);
368 if ( event2->device ) {
369 source = event2->device->source;
370 name = event2->device->name;
371 }
372 }
373 break;
375 case GDK_SCROLL:
376 {
377 GdkEventScroll* event2 = reinterpret_cast<GdkEventScroll*>(event);
378 if ( event2->device ) {
379 source = event2->device->source;
380 name = event2->device->name;
381 }
382 }
383 break;
385 case GDK_PROXIMITY_IN:
386 case GDK_PROXIMITY_OUT:
387 {
388 GdkEventProximity* event2 = reinterpret_cast<GdkEventProximity*>(event);
389 if ( event2->device ) {
390 source = event2->device->source;
391 name = event2->device->name;
392 }
393 }
394 break;
396 default:
397 ;
398 }
400 if (!name.empty()) {
401 if ( lastName != name || lastType != source ) {
402 // The device switched. See if it is one we 'count'
403 std::map<GdkInputSource, std::string>::iterator it = switchMap.find(source);
404 if ( (it != switchMap.end()) && (name == it->second) ) {
405 std::map<GdkInputSource, int>::iterator it2 = toolToUse.find(source);
406 if (it2 != toolToUse.end() ) {
407 // Save the tool currently selected for next time the input device shows up.
408 if ( (switchMap.find(lastType) != switchMap.end())
409 && (lastName == switchMap.find(lastType)->second)) {
410 toolToUse[lastType] = tools_active(desktop);
411 }
412 tools_switch(desktop, it2->second);
413 }
414 lastName = name;
415 lastType = source;
416 }
417 }
418 }
419 }
423 /*
424 Local Variables:
425 mode:c++
426 c-file-style:"stroustrup"
427 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
428 indent-tabs-mode:nil
429 fill-column:99
430 End:
431 */
432 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :