a5d7b77f02f5c6e874ccdd57807db97fb008e286
1 /** \file
2 * Provides a class that shows a temporary indicator on the canvas of where the snap was, and what kind of snap
3 *
4 * Authors:
5 * Johan Engelen
6 * Diederik van Lierop
7 *
8 * Copyright (C) Johan Engelen 2009 <j.b.c.engelen@utwente.nl>
9 * Copyright (C) Diederik van Lierop 2009 <mail@diedenrezi.nl>
10 *
11 * Released under GNU GPL, read the file 'COPYING' for more information
12 */
14 #include "display/snap-indicator.h"
16 #include "desktop.h"
17 #include "desktop-handles.h"
18 #include "display/sodipodi-ctrl.h"
19 #include "display/canvas-bpath.h"
20 #include "knot.h"
21 #include "preferences.h"
22 #include <glibmm/i18n.h>
24 namespace Inkscape {
25 namespace Display {
27 SnapIndicator::SnapIndicator(SPDesktop * desktop)
28 : _snaptarget(NULL),
29 _snaptarget_tooltip(NULL),
30 _snapsource(NULL),
31 _desktop(desktop)
32 {
33 }
35 SnapIndicator::~SnapIndicator()
36 {
37 // remove item that might be present
38 remove_snaptarget();
39 remove_snapsource();
40 }
42 void
43 SnapIndicator::set_new_snaptarget(Inkscape::SnappedPoint const p)
44 {
45 remove_snaptarget();
47 g_assert(_desktop != NULL);
49 /* Commented out for now, because this might hide any snapping bug!
50 if (!p.getSnapped()) {
51 return; // If we haven't snapped, then it is of no use to draw a snapindicator
52 }
53 */
55 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
56 bool value = prefs->getBool("/options/snapindicator/value", true);
58 if (value) {
59 gchar *target_name = _("UNDEFINED");
60 switch (p.getTarget()) {
61 case SNAPTARGET_UNDEFINED:
62 target_name = _("UNDEFINED");
63 break;
64 case SNAPTARGET_GRID:
65 target_name = _("grid line");
66 break;
67 case SNAPTARGET_GRID_INTERSECTION:
68 target_name = _("grid intersection");
69 break;
70 case SNAPTARGET_GUIDE:
71 target_name = _("guide");
72 break;
73 case SNAPTARGET_GUIDE_INTERSECTION:
74 target_name = _("guide intersection");
75 break;
76 case SNAPTARGET_GRID_GUIDE_INTERSECTION:
77 target_name = _("grid-guide intersection");
78 break;
79 case SNAPTARGET_NODE_CUSP:
80 target_name = _("cusp node");
81 break;
82 case SNAPTARGET_NODE_SMOOTH:
83 target_name = _("smooth node");
84 break;
85 case SNAPTARGET_PATH:
86 target_name = _("path");
87 break;
88 case SNAPTARGET_PATH_INTERSECTION:
89 target_name = _("path intersection");
90 break;
91 case SNAPTARGET_BBOX_CORNER:
92 target_name = _("bounding box corner");
93 break;
94 case SNAPTARGET_BBOX_EDGE:
95 target_name = _("bounding box side");
96 break;
97 case SNAPTARGET_GRADIENT:
98 target_name = _("gradient level");
99 break;
100 case SNAPTARGET_PAGE_BORDER:
101 target_name = _("page border");
102 break;
103 case SNAPTARGET_LINE_MIDPOINT:
104 target_name = _("line midpoint");
105 break;
106 case SNAPTARGET_OBJECT_MIDPOINT:
107 target_name = _("object midpoint");
108 break;
109 case SNAPTARGET_ROTATION_CENTER:
110 target_name = _("object rotation center");
111 break;
112 case SNAPTARGET_HANDLE:
113 target_name = _("handle");
114 break;
115 case SNAPTARGET_BBOX_EDGE_MIDPOINT:
116 target_name = _("bounding box side midpoint");
117 break;
118 case SNAPTARGET_BBOX_MIDPOINT:
119 target_name = _("bounding box midpoint");
120 break;
121 case SNAPTARGET_PAGE_CORNER:
122 target_name = _("page corner");
123 break;
124 case SNAPTARGET_CONVEX_HULL_CORNER:
125 target_name = _("convex hull corner");
126 break;
127 case SNAPTARGET_ELLIPSE_QUADRANT_POINT:
128 target_name = _("quadrant point");
129 break;
130 case SNAPTARGET_CENTER:
131 target_name = _("center");
132 break;
133 case SNAPTARGET_CORNER:
134 target_name = _("corner");
135 break;
136 case SNAPTARGET_TEXT_BASELINE:
137 target_name = _("text baseline");
138 break;
139 default:
140 g_warning("Snap target has not yet been defined!");
141 break;
142 }
144 gchar *source_name = _("UNDEFINED");
145 switch (p.getSource()) {
146 case SNAPSOURCE_UNDEFINED:
147 source_name = _("UNDEFINED");
148 break;
149 case SNAPSOURCE_BBOX_CORNER:
150 source_name = _("Bounding box corner");
151 break;
152 case SNAPSOURCE_BBOX_MIDPOINT:
153 source_name = _("Bounding box midpoint");
154 break;
155 case SNAPSOURCE_BBOX_EDGE_MIDPOINT:
156 source_name = _("Bounding box side midpoint");
157 break;
158 case SNAPSOURCE_NODE_SMOOTH:
159 source_name = _("Smooth node");
160 break;
161 case SNAPSOURCE_NODE_CUSP:
162 source_name = _("Cusp node");
163 break;
164 case SNAPSOURCE_LINE_MIDPOINT:
165 source_name = _("Line midpoint");
166 break;
167 case SNAPSOURCE_OBJECT_MIDPOINT:
168 source_name = _("Object midpoint");
169 break;
170 case SNAPSOURCE_ROTATION_CENTER:
171 source_name = _("Object rotation center");
172 break;
173 case SNAPSOURCE_HANDLE:
174 source_name = _("Handle");
175 break;
176 case SNAPSOURCE_PATH_INTERSECTION:
177 source_name = _("Path intersection");
178 break;
179 case SNAPSOURCE_GUIDE:
180 source_name = _("Guide");
181 break;
182 case SNAPSOURCE_CONVEX_HULL_CORNER:
183 source_name = _("Convex hull corner");
184 break;
185 case SNAPSOURCE_ELLIPSE_QUADRANT_POINT:
186 source_name = _("Quadrant point");
187 break;
188 case SNAPSOURCE_CENTER:
189 source_name = _("Center");
190 break;
191 case SNAPSOURCE_CORNER:
192 source_name = _("Corner");
193 break;
194 case SNAPSOURCE_TEXT_BASELINE:
195 source_name = _("Text baseline");
196 break;
197 default:
198 g_warning("Snap source has not yet been defined!");
199 break;
200 }
201 //std::cout << "Snapped " << source_name << " to " << target_name << std::endl;
203 remove_snapsource(); // Don't set both the source and target indicators, as these will overlap
205 // Display the snap indicator (i.e. the cross)
206 SPCanvasItem * canvasitem = NULL;
207 if (p.getTarget() == SNAPTARGET_NODE_SMOOTH || p.getTarget() == SNAPTARGET_NODE_CUSP) {
208 canvasitem = sp_canvas_item_new(sp_desktop_tempgroup (_desktop),
209 SP_TYPE_CTRL,
210 "anchor", GTK_ANCHOR_CENTER,
211 "size", 10.0,
212 "stroked", TRUE,
213 "stroke_color", 0xf000f0ff,
214 "mode", SP_KNOT_MODE_XOR,
215 "shape", SP_KNOT_SHAPE_DIAMOND,
216 NULL );
217 } else {
218 canvasitem = sp_canvas_item_new(sp_desktop_tempgroup (_desktop),
219 SP_TYPE_CTRL,
220 "anchor", GTK_ANCHOR_CENTER,
221 "size", 10.0,
222 "stroked", TRUE,
223 "stroke_color", 0xf000f0ff,
224 "mode", SP_KNOT_MODE_XOR,
225 "shape", SP_KNOT_SHAPE_CROSS,
226 NULL );
227 }
229 const int timeout_val = 1200; // TODO add preference for snap indicator timeout?
231 SP_CTRL(canvasitem)->moveto(p.getPoint());
232 _snaptarget = _desktop->add_temporary_canvasitem(canvasitem, timeout_val);
234 gchar *tooltip_str = g_strconcat(source_name, _(" to "), target_name, NULL);
235 Geom::Point tooltip_pos = p.getPoint() + _desktop->w2d(Geom::Point(15, -15));
237 SPCanvasItem *canvas_tooltip = sp_canvastext_new(sp_desktop_tempgroup(_desktop), _desktop, tooltip_pos, tooltip_str);
238 g_free(tooltip_str);
240 sp_canvastext_set_anchor((SPCanvasText* )canvas_tooltip, -1, 1);
241 _snaptarget_tooltip = _desktop->add_temporary_canvasitem(canvas_tooltip, timeout_val);
242 }
243 }
245 void
246 SnapIndicator::remove_snaptarget()
247 {
248 if (_snaptarget) {
249 _desktop->remove_temporary_canvasitem(_snaptarget);
250 _snaptarget = NULL;
251 }
253 if (_snaptarget_tooltip) {
254 _desktop->remove_temporary_canvasitem(_snaptarget_tooltip);
255 _snaptarget_tooltip = NULL;
256 }
258 }
260 void
261 SnapIndicator::set_new_snapsource(std::pair<Geom::Point, int> const p)
262 {
263 remove_snapsource();
265 g_assert(_desktop != NULL);
267 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
268 bool value = prefs->getBool("/options/snapindicator/value", true);
270 if (value) {
271 SPCanvasItem * canvasitem = sp_canvas_item_new( sp_desktop_tempgroup (_desktop),
272 SP_TYPE_CTRL,
273 "anchor", GTK_ANCHOR_CENTER,
274 "size", 10.0,
275 "stroked", TRUE,
276 "stroke_color", 0xf000f0ff,
277 "mode", SP_KNOT_MODE_XOR,
278 "shape", SP_KNOT_SHAPE_CIRCLE,
279 NULL );
281 SP_CTRL(canvasitem)->moveto(p.first);
282 _snapsource = _desktop->add_temporary_canvasitem(canvasitem, 1000);
283 }
284 }
286 void
287 SnapIndicator::remove_snapsource()
288 {
289 if (_snapsource) {
290 _desktop->remove_temporary_canvasitem(_snapsource);
291 _snapsource = NULL;
292 }
293 }
295 } //namespace Display
296 } /* namespace Inkscape */
299 /*
300 Local Variables:
301 mode:c++
302 c-file-style:"stroustrup"
303 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
304 indent-tabs-mode:nil
305 fill-column:99
306 End:
307 */
308 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 :