0ba4d7786f8dd65fc105c1b9695cc1540a888ad2
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 default:
131 g_warning("Snap target has not yet been defined!");
132 break;
133 }
135 gchar *source_name = _("UNDEFINED");
136 switch (p.getSource()) {
137 case SNAPSOURCE_UNDEFINED:
138 source_name = _("UNDEFINED");
139 break;
140 case SNAPSOURCE_BBOX_CORNER:
141 source_name = _("Bounding box corner");
142 break;
143 case SNAPSOURCE_BBOX_MIDPOINT:
144 source_name = _("Bounding box midpoint");
145 break;
146 case SNAPSOURCE_BBOX_EDGE_MIDPOINT:
147 source_name = _("Bounding box side midpoint");
148 break;
149 case SNAPSOURCE_NODE_SMOOTH:
150 source_name = _("Smooth node");
151 break;
152 case SNAPSOURCE_NODE_CUSP:
153 source_name = _("Cusp node");
154 break;
155 case SNAPSOURCE_LINE_MIDPOINT:
156 source_name = _("Line midpoint");
157 break;
158 case SNAPSOURCE_OBJECT_MIDPOINT:
159 source_name = _("Object midpoint");
160 break;
161 case SNAPSOURCE_ROTATION_CENTER:
162 source_name = _("Object rotation center");
163 break;
164 case SNAPSOURCE_HANDLE:
165 source_name = _("Handle");
166 break;
167 case SNAPSOURCE_PATH_INTERSECTION:
168 source_name = _("Path intersection");
169 break;
170 case SNAPSOURCE_GUIDE:
171 source_name = _("Guide");
172 break;
173 case SNAPSOURCE_CONVEX_HULL_CORNER:
174 source_name = _("Convex hull corner");
175 break;
176 case SNAPSOURCE_ELLIPSE_QUADRANT_POINT:
177 source_name = _("Quadrant point");
178 break;
179 default:
180 g_warning("Snap source has not yet been defined!");
181 break;
182 }
183 //std::cout << "Snapped " << source_name << " to " << target_name << std::endl;
185 remove_snapsource(); // Don't set both the source and target indicators, as these will overlap
187 // Display the snap indicator (i.e. the cross)
188 SPCanvasItem * canvasitem = NULL;
189 if (p.getTarget() == SNAPTARGET_NODE_SMOOTH || p.getTarget() == SNAPTARGET_NODE_CUSP) {
190 canvasitem = sp_canvas_item_new(sp_desktop_tempgroup (_desktop),
191 SP_TYPE_CTRL,
192 "anchor", GTK_ANCHOR_CENTER,
193 "size", 10.0,
194 "stroked", TRUE,
195 "stroke_color", 0xf000f0ff,
196 "mode", SP_KNOT_MODE_XOR,
197 "shape", SP_KNOT_SHAPE_DIAMOND,
198 NULL );
199 } else {
200 canvasitem = sp_canvas_item_new(sp_desktop_tempgroup (_desktop),
201 SP_TYPE_CTRL,
202 "anchor", GTK_ANCHOR_CENTER,
203 "size", 10.0,
204 "stroked", TRUE,
205 "stroke_color", 0xf000f0ff,
206 "mode", SP_KNOT_MODE_XOR,
207 "shape", SP_KNOT_SHAPE_CROSS,
208 NULL );
209 }
211 const int timeout_val = 1200; // TODO add preference for snap indicator timeout?
213 SP_CTRL(canvasitem)->moveto(p.getPoint());
214 _snaptarget = _desktop->add_temporary_canvasitem(canvasitem, timeout_val);
216 gchar *tooltip_str = g_strconcat(source_name, _(" to "), target_name, NULL);
218 SPCanvasItem *canvas_tooltip = sp_canvastext_new(sp_desktop_tempgroup(_desktop), _desktop, p.getPoint() + Geom::Point(15, -15), tooltip_str);
219 g_free(tooltip_str);
221 sp_canvastext_set_anchor((SPCanvasText* )canvas_tooltip, -1, 1);
222 _snaptarget_tooltip = _desktop->add_temporary_canvasitem(canvas_tooltip, timeout_val);
223 }
224 }
226 void
227 SnapIndicator::remove_snaptarget()
228 {
229 if (_snaptarget) {
230 _desktop->remove_temporary_canvasitem(_snaptarget);
231 _snaptarget = NULL;
232 }
234 if (_snaptarget_tooltip) {
235 _desktop->remove_temporary_canvasitem(_snaptarget_tooltip);
236 _snaptarget_tooltip = NULL;
237 }
239 }
241 void
242 SnapIndicator::set_new_snapsource(std::pair<Geom::Point, int> const p)
243 {
244 remove_snapsource();
246 g_assert(_desktop != NULL);
248 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
249 bool value = prefs->getBool("/options/snapindicator/value", true);
251 if (value) {
252 SPCanvasItem * canvasitem = sp_canvas_item_new( sp_desktop_tempgroup (_desktop),
253 SP_TYPE_CTRL,
254 "anchor", GTK_ANCHOR_CENTER,
255 "size", 10.0,
256 "stroked", TRUE,
257 "stroke_color", 0xf000f0ff,
258 "mode", SP_KNOT_MODE_XOR,
259 "shape", SP_KNOT_SHAPE_CIRCLE,
260 NULL );
262 SP_CTRL(canvasitem)->moveto(p.first);
263 _snapsource = _desktop->add_temporary_canvasitem(canvasitem, 1000);
264 }
265 }
267 void
268 SnapIndicator::remove_snapsource()
269 {
270 if (_snapsource) {
271 _desktop->remove_temporary_canvasitem(_snapsource);
272 _snapsource = NULL;
273 }
274 }
276 } //namespace Display
277 } /* namespace Inkscape */
280 /*
281 Local Variables:
282 mode:c++
283 c-file-style:"stroustrup"
284 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
285 indent-tabs-mode:nil
286 fill-column:99
287 End:
288 */
289 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :