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-rw-r--r--src/snap.cpp82
1 files changed, 38 insertions, 44 deletions
diff --git a/src/snap.cpp b/src/snap.cpp
index 91d5d64ec..545607889 100644
--- a/src/snap.cpp
+++ b/src/snap.cpp
@@ -206,13 +206,6 @@ Inkscape::SnappedPoint SnapManager::freeSnap(Inkscape::SnapPreferences::PointTyp
bool first_point,
Geom::OptRect const &bbox_to_snap) const
{
- if (_desktop->event_context && _desktop->event_context->_snap_window_open == false) {
- g_warning("The current tool tries to snap, but it hasn't yet opened the snap window. Please report this!");
- // When the context goes into dragging-mode, then Inkscape should call this: sp_event_context_snap_window_open(event_context);
- }
-
- //std::cout << "SnapManager::freeSnap -> postponed: " << snapprefs.getSnapPostponedGlobally() << std::endl;
-
if (!someSnapperMightSnap()) {
return Inkscape::SnappedPoint(p, source_type, Inkscape::SNAPTARGET_UNDEFINED, NR_HUGE, 0, false, false);
}
@@ -371,12 +364,7 @@ Inkscape::SnappedPoint SnapManager::constrainedSnap(Inkscape::SnapPreferences::P
bool first_point,
Geom::OptRect const &bbox_to_snap) const
{
- if (_desktop->event_context && _desktop->event_context->_snap_window_open == false) {
- g_warning("The current tool tries to snap, but it hasn't yet opened the snap window. Please report this!");
- // When the context goes into dragging-mode, then Inkscape should call this: sp_event_context_snap_window_open(event_context);
- }
-
- if (!someSnapperMightSnap()) {
+ if (!someSnapperMightSnap()) {
return Inkscape::SnappedPoint(p, source_type, Inkscape::SNAPTARGET_UNDEFINED, NR_HUGE, 0, false, false);
}
@@ -390,7 +378,10 @@ Inkscape::SnappedPoint SnapManager::constrainedSnap(Inkscape::SnapPreferences::P
items_to_ignore = _items_to_ignore;
}
+
+ // First project the mouse pointer onto the constraint
Geom::Point pp = constraint.projection(p);
+ // Then try to snap the projected point
SnappedConstraints sc;
SnapperList const snappers = getSnappers();
@@ -402,7 +393,7 @@ Inkscape::SnappedPoint SnapManager::constrainedSnap(Inkscape::SnapPreferences::P
delete items_to_ignore;
}
- return findBestSnap(p, source_type, sc, true);
+ return findBestSnap(pp, source_type, sc, true);
}
/**
@@ -417,13 +408,8 @@ Inkscape::SnappedPoint SnapManager::constrainedSnap(Inkscape::SnapPreferences::P
* \param p Current position of the point on the guide that is to be snapped; will be overwritten by the position of the snap target if snapping has occurred
* \param guide_normal Vector normal to the guide line
*/
-void SnapManager::guideFreeSnap(Geom::Point &p, Geom::Point const &guide_normal) const
+void SnapManager::guideFreeSnap(Geom::Point &p, Geom::Point const &guide_normal, SPGuideDragType drag_type) const
{
- if (_desktop->event_context && _desktop->event_context->_snap_window_open == false) {
- g_warning("The current tool tries to snap, but it hasn't yet opened the snap window. Please report this!");
- // When the context goes into dragging-mode, then Inkscape should call this: sp_event_context_snap_window_open(event_context);
- }
-
if (!snapprefs.getSnapEnabledGlobally() || snapprefs.getSnapPostponedGlobally()) {
return;
}
@@ -432,20 +418,27 @@ void SnapManager::guideFreeSnap(Geom::Point &p, Geom::Point const &guide_normal)
return;
}
+ Inkscape::SnapSourceType source_type = Inkscape::SNAPSOURCE_GUIDE_ORIGIN;
+ if (drag_type == SP_DRAG_ROTATE) {
+ source_type = Inkscape::SNAPSOURCE_GUIDE;
+ }
+
// Snap to nodes
SnappedConstraints sc;
if (object.GuidesMightSnap()) {
object.guideFreeSnap(sc, p, guide_normal);
}
- // Snap to guides
- if (snapprefs.getSnapToGuides()) {
- guide.freeSnap(sc, Inkscape::SnapPreferences::SNAPPOINT_GUIDE, p, Inkscape::SNAPSOURCE_GUIDE, true, Geom::OptRect(), NULL, NULL);
- }
+ // Snap to guides & grid lines
+ SnapperList snappers = getGridSnappers();
+ snappers.push_back(&guide);
+ for (SnapperList::const_iterator i = snappers.begin(); i != snappers.end(); i++) {
+ (*i)->freeSnap(sc, Inkscape::SnapPreferences::SNAPPOINT_GUIDE, p, source_type, true, Geom::OptRect(), NULL, NULL);
+ }
- // We won't snap to grids, what's the use?
+ // Snap to intersections of curves, but not to the curves themselves! (see _snapTranslatingGuideToNodes in object-snapper.cpp)
+ Inkscape::SnappedPoint const s = findBestSnap(p, source_type, sc, false, true);
- Inkscape::SnappedPoint const s = findBestSnap(p, Inkscape::SNAPSOURCE_GUIDE, sc, false);
s.getPoint(p);
}
@@ -465,12 +458,7 @@ void SnapManager::guideFreeSnap(Geom::Point &p, Geom::Point const &guide_normal)
void SnapManager::guideConstrainedSnap(Geom::Point &p, SPGuide const &guideline) const
{
- if (_desktop->event_context && _desktop->event_context->_snap_window_open == false) {
- g_warning("The current tool tries to snap, but it hasn't yet opened the snap window. Please report this!");
- // When the context goes into dragging-mode, then Inkscape should call this: sp_event_context_snap_window_open(event_context);
- }
-
- if (!snapprefs.getSnapEnabledGlobally() || snapprefs.getSnapPostponedGlobally()) {
+ if (!snapprefs.getSnapEnabledGlobally() || snapprefs.getSnapPostponedGlobally()) {
return;
}
@@ -478,21 +466,23 @@ void SnapManager::guideConstrainedSnap(Geom::Point &p, SPGuide const &guideline)
return;
}
+ Inkscape::SnapSourceType source_type = Inkscape::SNAPSOURCE_GUIDE_ORIGIN;
+
// Snap to nodes or paths
SnappedConstraints sc;
Inkscape::Snapper::ConstraintLine cl(guideline.point_on_line, Geom::rot90(guideline.normal_to_line));
if (object.ThisSnapperMightSnap()) {
- object.constrainedSnap(sc, Inkscape::SnapPreferences::SNAPPOINT_GUIDE, p, Inkscape::SNAPSOURCE_GUIDE_ORIGIN, true, Geom::OptRect(), cl, NULL);
+ object.constrainedSnap(sc, Inkscape::SnapPreferences::SNAPPOINT_GUIDE, p, source_type, true, Geom::OptRect(), cl, NULL);
}
- // Snap to guides
- if (snapprefs.getSnapToGuides()) {
- guide.constrainedSnap(sc, Inkscape::SnapPreferences::SNAPPOINT_GUIDE, p, Inkscape::SNAPSOURCE_GUIDE_ORIGIN, true, Geom::OptRect(), cl, NULL);
- }
-
- // We won't snap to grids, what's the use?
+ // Snap to guides & grid lines
+ SnapperList snappers = getGridSnappers();
+ snappers.push_back(&guide);
+ for (SnapperList::const_iterator i = snappers.begin(); i != snappers.end(); i++) {
+ (*i)->constrainedSnap(sc, Inkscape::SnapPreferences::SNAPPOINT_GUIDE, p, source_type, true, Geom::OptRect(), cl, NULL);
+ }
- Inkscape::SnappedPoint const s = findBestSnap(p, Inkscape::SNAPSOURCE_GUIDE, sc, false);
+ Inkscape::SnappedPoint const s = findBestSnap(p, source_type, sc, false);
s.getPoint(p);
}
@@ -922,13 +912,15 @@ Inkscape::SnappedPoint SnapManager::constrainedSnapSkew(Inkscape::SnapPreference
* \param source_type Detailed description of the source type, will be used by the snap indicator
* \param sc A structure holding all snap targets that have been found so far
* \param constrained True if the snap is constrained, e.g. for stretching or for purely horizontal translation.
+ * \param noCurves If true, then do consider snapping to intersections of curves, but not to the curves themself
* \return An instance of the SnappedPoint class, which holds data on the snap source, snap target, and various metrics
*/
Inkscape::SnappedPoint SnapManager::findBestSnap(Geom::Point const &p,
Inkscape::SnapSourceType const source_type,
SnappedConstraints &sc,
- bool constrained) const
+ bool constrained,
+ bool noCurves) const
{
/*
@@ -950,9 +942,11 @@ Inkscape::SnappedPoint SnapManager::findBestSnap(Geom::Point const &p,
}
// search for the closest snapped curve
- Inkscape::SnappedCurve closestCurve;
- if (getClosestCurve(sc.curves, closestCurve)) {
- sp_list.push_back(Inkscape::SnappedPoint(closestCurve));
+ if (!noCurves) {
+ Inkscape::SnappedCurve closestCurve;
+ if (getClosestCurve(sc.curves, closestCurve)) {
+ sp_list.push_back(Inkscape::SnappedPoint(closestCurve));
+ }
}
if (snapprefs.getSnapIntersectionCS()) {
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-19 21:19:20 +0000