![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
index 3ee00c9d1067a54fb04f3665deb2717ac6d47ba8..0409e64b11ad9bd644abc44b8c722f53c6f0d2c4 100644 (file)
* Johan Engelen
* Diederik van Lierop
*
- * Copyright (C) Johan Engelen 2008 <j.b.c.engelen@utwente.nl>
- * Copyright (C) Diederik van Lierop 2008 <mail@diedenrezi.nl>
+ * 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 "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)
- : tempitem(NULL),
- desktop(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_snappoint();
+ remove_snaptarget();
+ remove_snapsource();
}
void
-SnapIndicator::set_new_snappoint(Inkscape::SnappedPoint const p)
+SnapIndicator::set_new_snaptarget(Inkscape::SnappedPoint const &p, bool pre_snap)
{
- remove_snappoint();
+ remove_snaptarget(); //only display one snaptarget at a time
- bool enabled = true; // TODO add preference for snap indicator.
- if (enabled) {
- // TODO add many different kinds of snap indicator :-)
- SPCanvasItem * canvasitem = sp_canvas_item_new( sp_desktop_tempgroup (desktop),
+ 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", 10.0,
+ "size", 6.0,
"stroked", TRUE,
- "stroke_color", 0xf000f0ff,
+ "stroke_color", 0xff0000ff,
"mode", SP_KNOT_MODE_XOR,
- "shape", SP_KNOT_SHAPE_CROSS,
+ "shape", SP_KNOT_SHAPE_CIRCLE,
NULL );
-
-
+
SP_CTRL(canvasitem)->moveto(p.getPoint());
- tempitem = desktop->add_temporary_canvasitem(canvasitem, 1000); // TODO add preference for snap indicator timeout
+ _snapsource = _desktop->add_temporary_canvasitem(canvasitem, 1000);
}
}
void
-SnapIndicator::remove_snappoint()
+SnapIndicator::remove_snapsource()
{
- if (tempitem) {
- desktop->remove_temporary_canvasitem(tempitem);
- tempitem = NULL;
+ if (_snapsource) {
+ _desktop->remove_temporary_canvasitem(_snapsource);
+ _snapsource = NULL;
}
}
-
} //namespace Display
} /* namespace Inkscape */
+
/*
Local Variables:
mode:c++
fill-column:99
End:
*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 :