20ea7d58cc5d3f6d9a0e4a2155193faaada73577
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-text.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(); //only display one snaptarget at a time
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 // TRANSLATORS: undefined target for snapping
60 gchar *target_name = _("UNDEFINED");
61 switch (p.getTarget()) {
62 case SNAPTARGET_UNDEFINED:
63 target_name = _("UNDEFINED");
64 break;
65 case SNAPTARGET_GRID:
66 target_name = _("grid line");
67 break;
68 case SNAPTARGET_GRID_INTERSECTION:
69 target_name = _("grid intersection");
70 break;
71 case SNAPTARGET_GUIDE:
72 target_name = _("guide");
73 break;
74 case SNAPTARGET_GUIDE_INTERSECTION:
75 target_name = _("guide intersection");
76 break;
77 case SNAPTARGET_GUIDE_ORIGIN:
78 target_name = _("guide origin");
79 break;
80 case SNAPTARGET_GRID_GUIDE_INTERSECTION:
81 target_name = _("grid-guide intersection");
82 break;
83 case SNAPTARGET_NODE_CUSP:
84 target_name = _("cusp node");
85 break;
86 case SNAPTARGET_NODE_SMOOTH:
87 target_name = _("smooth node");
88 break;
89 case SNAPTARGET_PATH:
90 target_name = _("path");
91 break;
92 case SNAPTARGET_PATH_INTERSECTION:
93 target_name = _("path intersection");
94 break;
95 case SNAPTARGET_BBOX_CORNER:
96 target_name = _("bounding box corner");
97 break;
98 case SNAPTARGET_BBOX_EDGE:
99 target_name = _("bounding box side");
100 break;
101 case SNAPTARGET_GRADIENTS_PARENT_BBOX:
102 target_name = _("bounding box");
103 break;
104 case SNAPTARGET_PAGE_BORDER:
105 target_name = _("page border");
106 break;
107 case SNAPTARGET_LINE_MIDPOINT:
108 target_name = _("line midpoint");
109 break;
110 case SNAPTARGET_OBJECT_MIDPOINT:
111 target_name = _("object midpoint");
112 break;
113 case SNAPTARGET_ROTATION_CENTER:
114 target_name = _("object rotation center");
115 break;
116 case SNAPTARGET_HANDLE:
117 target_name = _("handle");
118 break;
119 case SNAPTARGET_BBOX_EDGE_MIDPOINT:
120 target_name = _("bounding box side midpoint");
121 break;
122 case SNAPTARGET_BBOX_MIDPOINT:
123 target_name = _("bounding box midpoint");
124 break;
125 case SNAPTARGET_PAGE_CORNER:
126 target_name = _("page corner");
127 break;
128 case SNAPTARGET_CONVEX_HULL_CORNER:
129 target_name = _("convex hull corner");
130 break;
131 case SNAPTARGET_ELLIPSE_QUADRANT_POINT:
132 target_name = _("quadrant point");
133 break;
134 case SNAPTARGET_CENTER:
135 target_name = _("center");
136 break;
137 case SNAPTARGET_CORNER:
138 target_name = _("corner");
139 break;
140 case SNAPTARGET_TEXT_BASELINE:
141 target_name = _("text baseline");
142 break;
143 default:
144 g_warning("Snap target has not yet been defined!");
145 break;
146 }
148 gchar *source_name = _("UNDEFINED");
149 switch (p.getSource()) {
150 case SNAPSOURCE_UNDEFINED:
151 source_name = _("UNDEFINED");
152 break;
153 case SNAPSOURCE_BBOX_CORNER:
154 source_name = _("Bounding box corner");
155 break;
156 case SNAPSOURCE_BBOX_MIDPOINT:
157 source_name = _("Bounding box midpoint");
158 break;
159 case SNAPSOURCE_BBOX_EDGE_MIDPOINT:
160 source_name = _("Bounding box side midpoint");
161 break;
162 case SNAPSOURCE_NODE_SMOOTH:
163 source_name = _("Smooth node");
164 break;
165 case SNAPSOURCE_NODE_CUSP:
166 source_name = _("Cusp node");
167 break;
168 case SNAPSOURCE_LINE_MIDPOINT:
169 source_name = _("Line midpoint");
170 break;
171 case SNAPSOURCE_OBJECT_MIDPOINT:
172 source_name = _("Object midpoint");
173 break;
174 case SNAPSOURCE_ROTATION_CENTER:
175 source_name = _("Object rotation center");
176 break;
177 case SNAPSOURCE_HANDLE:
178 source_name = _("Handle");
179 break;
180 case SNAPSOURCE_PATH_INTERSECTION:
181 source_name = _("Path intersection");
182 break;
183 case SNAPSOURCE_GUIDE:
184 source_name = _("Guide");
185 break;
186 case SNAPSOURCE_GUIDE_ORIGIN:
187 source_name = _("Guide origin");
188 break;
189 case SNAPSOURCE_CONVEX_HULL_CORNER:
190 source_name = _("Convex hull corner");
191 break;
192 case SNAPSOURCE_ELLIPSE_QUADRANT_POINT:
193 source_name = _("Quadrant point");
194 break;
195 case SNAPSOURCE_CENTER:
196 source_name = _("Center");
197 break;
198 case SNAPSOURCE_CORNER:
199 source_name = _("Corner");
200 break;
201 case SNAPSOURCE_TEXT_BASELINE:
202 source_name = _("Text baseline");
203 break;
204 default:
205 g_warning("Snap source has not yet been defined!");
206 break;
207 }
208 //std::cout << "Snapped " << source_name << " to " << target_name << std::endl;
210 remove_snapsource(); // Don't set both the source and target indicators, as these will overlap
212 // Display the snap indicator (i.e. the cross)
213 SPCanvasItem * canvasitem = NULL;
214 if (p.getTarget() == SNAPTARGET_NODE_SMOOTH || p.getTarget() == SNAPTARGET_NODE_CUSP) {
215 canvasitem = sp_canvas_item_new(sp_desktop_tempgroup (_desktop),
216 SP_TYPE_CTRL,
217 "anchor", GTK_ANCHOR_CENTER,
218 "size", 10.0,
219 "stroked", TRUE,
220 "stroke_color", 0xf000f0ff,
221 "mode", SP_KNOT_MODE_XOR,
222 "shape", SP_KNOT_SHAPE_DIAMOND,
223 NULL );
224 } else {
225 canvasitem = sp_canvas_item_new(sp_desktop_tempgroup (_desktop),
226 SP_TYPE_CTRL,
227 "anchor", GTK_ANCHOR_CENTER,
228 "size", 10.0,
229 "stroked", TRUE,
230 "stroke_color", 0xf000f0ff,
231 "mode", SP_KNOT_MODE_XOR,
232 "shape", SP_KNOT_SHAPE_CROSS,
233 NULL );
234 }
236 const int timeout_val = 1200; // TODO add preference for snap indicator timeout?
238 SP_CTRL(canvasitem)->moveto(p.getPoint());
239 _snaptarget = _desktop->add_temporary_canvasitem(canvasitem, timeout_val);
241 gchar *tooltip_str = g_strconcat(source_name, _(" to "), target_name, NULL);
242 Geom::Point tooltip_pos = p.getPoint() + _desktop->w2d(Geom::Point(15, -15));
244 SPCanvasItem *canvas_tooltip = sp_canvastext_new(sp_desktop_tempgroup(_desktop), _desktop, tooltip_pos, tooltip_str);
245 g_free(tooltip_str);
247 sp_canvastext_set_anchor((SPCanvasText* )canvas_tooltip, -1, 1);
248 _snaptarget_tooltip = _desktop->add_temporary_canvasitem(canvas_tooltip, timeout_val);
249 }
250 }
252 void
253 SnapIndicator::remove_snaptarget()
254 {
255 if (_snaptarget) {
256 _desktop->remove_temporary_canvasitem(_snaptarget);
257 _snaptarget = NULL;
258 }
260 if (_snaptarget_tooltip) {
261 _desktop->remove_temporary_canvasitem(_snaptarget_tooltip);
262 _snaptarget_tooltip = NULL;
263 }
265 }
267 void
268 SnapIndicator::set_new_snapsource(std::pair<Geom::Point, int> const p)
269 {
270 remove_snapsource();
272 g_assert(_desktop != NULL);
274 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
275 bool value = prefs->getBool("/options/snapindicator/value", true);
277 if (value) {
278 SPCanvasItem * canvasitem = sp_canvas_item_new( sp_desktop_tempgroup (_desktop),
279 SP_TYPE_CTRL,
280 "anchor", GTK_ANCHOR_CENTER,
281 "size", 6.0,
282 "stroked", TRUE,
283 "stroke_color", 0xf000f0ff,
284 "mode", SP_KNOT_MODE_XOR,
285 "shape", SP_KNOT_SHAPE_CIRCLE,
286 NULL );
288 SP_CTRL(canvasitem)->moveto(p.first);
289 _snapsource = _desktop->add_temporary_canvasitem(canvasitem, 1000);
290 }
291 }
293 void
294 SnapIndicator::remove_snapsource()
295 {
296 if (_snapsource) {
297 _desktop->remove_temporary_canvasitem(_snapsource);
298 _snapsource = NULL;
299 }
300 }
302 } //namespace Display
303 } /* namespace Inkscape */
306 /*
307 Local Variables:
308 mode:c++
309 c-file-style:"stroustrup"
310 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
311 indent-tabs-mode:nil
312 fill-column:99
313 End:
314 */
315 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 :