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/** \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 2009 <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/canvas-text.h"
#include "knot.h"
#include "preferences.h"
#include <glibmm/i18n.h>
namespace Inkscape {
namespace Display {
SnapIndicator::SnapIndicator(SPDesktop * desktop)
: _snaptarget(NULL),
_snaptarget_tooltip(NULL),
_snapsource(NULL),
_desktop(desktop)
{
}
SnapIndicator::~SnapIndicator()
{
// remove item that might be present
remove_snaptarget();
remove_snapsource();
}
void
SnapIndicator::set_new_snaptarget(Inkscape::SnappedPoint const &p)
{
remove_snaptarget(); //only display one snaptarget at a time
g_assert(_desktop != NULL);
if (!p.getSnapped()) {
g_warning("No snapping took place, so no snap target will be displayed");
return; // If we haven't snapped, then it is of no use to draw a snapindicator
}
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;
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_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;
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", 0xf000f0ff,
"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", 0xf000f0ff,
"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);
gchar *tooltip_str = g_strconcat(source_name, _(" to "), target_name, NULL);
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);
g_free(tooltip_str);
sp_canvastext_set_anchor((SPCanvasText* )canvas_tooltip, -1, 1);
_snaptarget_tooltip = _desktop->add_temporary_canvasitem(canvas_tooltip, timeout_val);
}
}
void
SnapIndicator::remove_snaptarget()
{
if (_snaptarget) {
_desktop->remove_temporary_canvasitem(_snaptarget);
_snaptarget = NULL;
}
if (_snaptarget_tooltip) {
_desktop->remove_temporary_canvasitem(_snaptarget_tooltip);
_snaptarget_tooltip = 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", 0xf000f0ff,
"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 :
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