![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
index ba9c10ef2dfc99668793b77ce603c167cb398a3c..0409e64b11ad9bd644abc44b8c722f53c6f0d2c4 100644 (file)
-/** \file\r
- * Provides a class that shows a temporary indicator on the canvas of where the snap was, and what kind of snap\r
- *\r
- * Authors:\r
- * Johan Engelen\r
- *\r
- * Copyright (C) Johan Engelen 2008 <j.b.c.engelen@utwente.nl>\r
- *\r
- * Released under GNU GPL, read the file 'COPYING' for more information\r
- */\r
-\r
-#include "display/snap-indicator.h"\r
-\r
-#include "desktop.h"\r
-#include "desktop-handles.h"\r
-#include "display/sodipodi-ctrl.h"\r
-#include "knot.h"\r
-\r
-namespace Inkscape {\r
-namespace Display {\r
-\r
-/** lifetime is measured in milliseconds\r
- */\r
-SnapIndicator::SnapIndicator(SPDesktop * desktop)\r
- : tempitem(NULL),\r
- desktop(desktop)\r
-{\r
-}\r
-\r
-SnapIndicator::~SnapIndicator()\r
-{\r
- // remove item that might be present\r
- remove_snappoint();\r
-}\r
-\r
-void\r
-SnapIndicator::set_new_snappoint(Geom::Point p)\r
-{\r
- remove_snappoint();\r
-\r
- SPCanvasItem * canvasitem = sp_canvas_item_new( sp_desktop_tempgroup (desktop),\r
- SP_TYPE_CTRL,\r
- "anchor", GTK_ANCHOR_CENTER,\r
- "size", 6.0,\r
- "stroked", TRUE,\r
- "stroke_color", 0xf000f0ff,\r
- "mode", SP_KNOT_MODE_XOR,\r
- "shape", SP_KNOT_SHAPE_CROSS,\r
- NULL );\r
- SP_CTRL(canvasitem)->moveto ( p );\r
- tempitem = desktop->add_temporary_canvasitem(canvasitem, 1000);\r
-}\r
-\r
-void\r
-SnapIndicator::remove_snappoint()\r
-{\r
- if (tempitem) {\r
- desktop->remove_temporary_canvasitem(tempitem);\r
- tempitem = NULL;\r
- }\r
-}\r
-\r
-\r
-} //namespace Display\r
-} /* namespace Inkscape */\r
-\r
-/*\r
- Local Variables:\r
- mode:c++\r
- c-file-style:"stroustrup"\r
- c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))\r
- indent-tabs-mode:nil\r
- fill-column:99\r
- End:\r
-*/\r
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :\r
+/** \file
+ * Provides a class that shows a temporary indicator on the canvas of where the snap was, and what kind of snap
+ *
+ * Authors:
+ * Johan Engelen
+ * Diederik van Lierop
+ *
+ * Copyright (C) Johan Engelen 2009 <j.b.c.engelen@utwente.nl>
+ * Copyright (C) Diederik van Lierop 2010 <mail@diedenrezi.nl>
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "display/snap-indicator.h"
+
+#include "desktop.h"
+#include "desktop-handles.h"
+#include "display/sodipodi-ctrl.h"
+#include "display/sodipodi-ctrlrect.h"
+#include "display/canvas-text.h"
+#include "display/sp-canvas-util.h"
+#include "knot.h"
+#include "preferences.h"
+#include <glibmm/i18n.h>
+
+namespace Inkscape {
+namespace Display {
+
+SnapIndicator::SnapIndicator(SPDesktop * desktop)
+ : _snaptarget(NULL),
+ _snaptarget_tooltip(NULL),
+ _snaptarget_bbox(NULL),
+ _snapsource(NULL),
+ _snaptarget_is_presnap(false),
+ _desktop(desktop)
+{
+}
+
+SnapIndicator::~SnapIndicator()
+{
+ // remove item that might be present
+ remove_snaptarget();
+ remove_snapsource();
+}
+
+void
+SnapIndicator::set_new_snaptarget(Inkscape::SnappedPoint const &p, bool pre_snap)
+{
+ remove_snaptarget(); //only display one snaptarget at a time
+
+ g_assert(_desktop != NULL);
+
+ if (!p.getSnapped()) {
+ return; // If we haven't snapped, then it is of no use to draw a snapindicator
+ }
+
+ if (p.getTarget() == SNAPTARGET_CONSTRAINT) {
+ // This is not a real snap, although moving along the constraint did affect the mouse pointer's position.
+ // Maybe we should only show a snap indicator when the user explicitly asked for a constraint by pressing ctrl?
+ // We should not show a snap indicator when stretching a selection box, which is also constrained. That would be
+ // too much information.
+ return;
+ }
+
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ bool value = prefs->getBool("/options/snapindicator/value", true);
+
+ if (value) {
+ // TRANSLATORS: undefined target for snapping
+ gchar *target_name = _("UNDEFINED");
+ switch (p.getTarget()) {
+ case SNAPTARGET_UNDEFINED:
+ target_name = _("UNDEFINED");
+ break;
+ case SNAPTARGET_GRID:
+ target_name = _("grid line");
+ break;
+ case SNAPTARGET_GRID_INTERSECTION:
+ target_name = _("grid intersection");
+ break;
+ case SNAPTARGET_GUIDE:
+ target_name = _("guide");
+ break;
+ case SNAPTARGET_GUIDE_INTERSECTION:
+ target_name = _("guide intersection");
+ break;
+ case SNAPTARGET_GUIDE_ORIGIN:
+ target_name = _("guide origin");
+ break;
+ case SNAPTARGET_GRID_GUIDE_INTERSECTION:
+ target_name = _("grid-guide intersection");
+ break;
+ case SNAPTARGET_NODE_CUSP:
+ target_name = _("cusp node");
+ break;
+ case SNAPTARGET_NODE_SMOOTH:
+ target_name = _("smooth node");
+ break;
+ case SNAPTARGET_PATH:
+ target_name = _("path");
+ break;
+ case SNAPTARGET_PATH_INTERSECTION:
+ target_name = _("path intersection");
+ break;
+ case SNAPTARGET_BBOX_CORNER:
+ target_name = _("bounding box corner");
+ break;
+ case SNAPTARGET_BBOX_EDGE:
+ target_name = _("bounding box side");
+ break;
+ case SNAPTARGET_PAGE_BORDER:
+ target_name = _("page border");
+ break;
+ case SNAPTARGET_LINE_MIDPOINT:
+ target_name = _("line midpoint");
+ break;
+ case SNAPTARGET_OBJECT_MIDPOINT:
+ target_name = _("object midpoint");
+ break;
+ case SNAPTARGET_ROTATION_CENTER:
+ target_name = _("object rotation center");
+ break;
+ case SNAPTARGET_HANDLE:
+ target_name = _("handle");
+ break;
+ case SNAPTARGET_BBOX_EDGE_MIDPOINT:
+ target_name = _("bounding box side midpoint");
+ break;
+ case SNAPTARGET_BBOX_MIDPOINT:
+ target_name = _("bounding box midpoint");
+ break;
+ case SNAPTARGET_PAGE_CORNER:
+ target_name = _("page corner");
+ break;
+ case SNAPTARGET_CONVEX_HULL_CORNER:
+ target_name = _("convex hull corner");
+ break;
+ case SNAPTARGET_ELLIPSE_QUADRANT_POINT:
+ target_name = _("quadrant point");
+ break;
+ case SNAPTARGET_CENTER:
+ target_name = _("center");
+ break;
+ case SNAPTARGET_CORNER:
+ target_name = _("corner");
+ break;
+ case SNAPTARGET_TEXT_BASELINE:
+ target_name = _("text baseline");
+ break;
+ case SNAPTARGET_CONSTRAINED_ANGLE:
+ target_name = _("constrained angle");
+ break;
+ case SNAPTARGET_CONSTRAINT:
+ target_name = _("constraint");
+ break;
+ default:
+ g_warning("Snap target has not yet been defined!");
+ break;
+ }
+
+ gchar *source_name = _("UNDEFINED");
+ switch (p.getSource()) {
+ case SNAPSOURCE_UNDEFINED:
+ source_name = _("UNDEFINED");
+ break;
+ case SNAPSOURCE_BBOX_CORNER:
+ source_name = _("Bounding box corner");
+ break;
+ case SNAPSOURCE_BBOX_MIDPOINT:
+ source_name = _("Bounding box midpoint");
+ break;
+ case SNAPSOURCE_BBOX_EDGE_MIDPOINT:
+ source_name = _("Bounding box side midpoint");
+ break;
+ case SNAPSOURCE_NODE_SMOOTH:
+ source_name = _("Smooth node");
+ break;
+ case SNAPSOURCE_NODE_CUSP:
+ source_name = _("Cusp node");
+ break;
+ case SNAPSOURCE_LINE_MIDPOINT:
+ source_name = _("Line midpoint");
+ break;
+ case SNAPSOURCE_OBJECT_MIDPOINT:
+ source_name = _("Object midpoint");
+ break;
+ case SNAPSOURCE_ROTATION_CENTER:
+ source_name = _("Object rotation center");
+ break;
+ case SNAPSOURCE_NODE_HANDLE:
+ case SNAPSOURCE_OTHER_HANDLE:
+ source_name = _("Handle");
+ break;
+ case SNAPSOURCE_PATH_INTERSECTION:
+ source_name = _("Path intersection");
+ break;
+ case SNAPSOURCE_GUIDE:
+ source_name = _("Guide");
+ break;
+ case SNAPSOURCE_GUIDE_ORIGIN:
+ source_name = _("Guide origin");
+ break;
+ case SNAPSOURCE_CONVEX_HULL_CORNER:
+ source_name = _("Convex hull corner");
+ break;
+ case SNAPSOURCE_ELLIPSE_QUADRANT_POINT:
+ source_name = _("Quadrant point");
+ break;
+ case SNAPSOURCE_CENTER:
+ source_name = _("Center");
+ break;
+ case SNAPSOURCE_CORNER:
+ source_name = _("Corner");
+ break;
+ case SNAPSOURCE_TEXT_BASELINE:
+ source_name = _("Text baseline");
+ break;
+ case SNAPSOURCE_GRID_PITCH:
+ source_name = _("Multiple of grid spacing");
+ break;
+ default:
+ g_warning("Snap source has not yet been defined!");
+ break;
+ }
+ //std::cout << "Snapped " << source_name << " to " << target_name << std::endl;
+
+ remove_snapsource(); // Don't set both the source and target indicators, as these will overlap
+
+ // Display the snap indicator (i.e. the cross)
+ SPCanvasItem * canvasitem = NULL;
+ if (p.getTarget() == SNAPTARGET_NODE_SMOOTH || p.getTarget() == SNAPTARGET_NODE_CUSP) {
+ canvasitem = sp_canvas_item_new(sp_desktop_tempgroup (_desktop),
+ SP_TYPE_CTRL,
+ "anchor", GTK_ANCHOR_CENTER,
+ "size", 10.0,
+ "stroked", TRUE,
+ "stroke_color", pre_snap ? 0x7f7f7fff : 0xff0000ff,
+ "mode", SP_KNOT_MODE_XOR,
+ "shape", SP_KNOT_SHAPE_DIAMOND,
+ NULL );
+ } else {
+ canvasitem = sp_canvas_item_new(sp_desktop_tempgroup (_desktop),
+ SP_TYPE_CTRL,
+ "anchor", GTK_ANCHOR_CENTER,
+ "size", 10.0,
+ "stroked", TRUE,
+ "stroke_color", pre_snap ? 0x7f7f7fff : 0xff0000ff,
+ "mode", SP_KNOT_MODE_XOR,
+ "shape", SP_KNOT_SHAPE_CROSS,
+ NULL );
+ }
+
+ const int timeout_val = 1200; // TODO add preference for snap indicator timeout?
+
+ SP_CTRL(canvasitem)->moveto(p.getPoint());
+ _snaptarget = _desktop->add_temporary_canvasitem(canvasitem, timeout_val);
+ _snaptarget_is_presnap = pre_snap;
+
+ // Display the tooltip, which reveals the type of snap source and the type of snap target
+ gchar *tooltip_str = NULL;
+ if (p.getSource() != SNAPSOURCE_GRID_PITCH) {
+ tooltip_str = g_strconcat(source_name, _(" to "), target_name, NULL);
+ } else {
+ tooltip_str = g_strdup(source_name);
+ }
+ Geom::Point tooltip_pos = p.getPoint() + _desktop->w2d(Geom::Point(15, -15));
+
+ SPCanvasItem *canvas_tooltip = sp_canvastext_new(sp_desktop_tempgroup(_desktop), _desktop, tooltip_pos, tooltip_str);
+ if (pre_snap) {
+ SP_CANVASTEXT(canvas_tooltip)->rgba = 0x7f7f7fff;
+ }
+ g_free(tooltip_str);
+
+ sp_canvastext_set_anchor((SPCanvasText* )canvas_tooltip, -1, 1);
+ _snaptarget_tooltip = _desktop->add_temporary_canvasitem(canvas_tooltip, timeout_val);
+
+ // Display the bounding box, if we snapped to one
+ Geom::OptRect const bbox = p.getTargetBBox();
+ if (bbox) {
+ SPCanvasItem* box = sp_canvas_item_new(sp_desktop_tempgroup (_desktop),
+ SP_TYPE_CTRLRECT,
+ NULL);
+
+ SP_CTRLRECT(box)->setRectangle(*bbox);
+ SP_CTRLRECT(box)->setColor(pre_snap ? 0x7f7f7fff : 0xff0000ff, 0, 0);
+ SP_CTRLRECT(box)->setDashed(true);
+ sp_canvas_item_move_to_z(box, 0);
+ _snaptarget_bbox = _desktop->add_temporary_canvasitem(box, timeout_val);
+ }
+ }
+}
+
+void
+SnapIndicator::remove_snaptarget(bool only_if_presnap)
+{
+ if (only_if_presnap && !_snaptarget_is_presnap) {
+ return;
+ }
+
+ if (_snaptarget) {
+ _desktop->remove_temporary_canvasitem(_snaptarget);
+ _snaptarget = NULL;
+ _snaptarget_is_presnap = false;
+ }
+
+ if (_snaptarget_tooltip) {
+ _desktop->remove_temporary_canvasitem(_snaptarget_tooltip);
+ _snaptarget_tooltip = NULL;
+ }
+
+ if (_snaptarget_bbox) {
+ _desktop->remove_temporary_canvasitem(_snaptarget_bbox);
+ _snaptarget_bbox = NULL;
+ }
+
+}
+
+void
+SnapIndicator::set_new_snapsource(Inkscape::SnapCandidatePoint const &p)
+{
+ remove_snapsource();
+
+ g_assert(_desktop != NULL);
+
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ bool value = prefs->getBool("/options/snapindicator/value", true);
+
+ if (value) {
+ SPCanvasItem * canvasitem = sp_canvas_item_new( sp_desktop_tempgroup (_desktop),
+ SP_TYPE_CTRL,
+ "anchor", GTK_ANCHOR_CENTER,
+ "size", 6.0,
+ "stroked", TRUE,
+ "stroke_color", 0xff0000ff,
+ "mode", SP_KNOT_MODE_XOR,
+ "shape", SP_KNOT_SHAPE_CIRCLE,
+ NULL );
+
+ SP_CTRL(canvasitem)->moveto(p.getPoint());
+ _snapsource = _desktop->add_temporary_canvasitem(canvasitem, 1000);
+ }
+}
+
+void
+SnapIndicator::remove_snapsource()
+{
+ if (_snapsource) {
+ _desktop->remove_temporary_canvasitem(_snapsource);
+ _snapsource = NULL;
+ }
+}
+
+} //namespace Display
+} /* namespace Inkscape */
+
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 :