scratchfoundation/paper.js
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Further simplify and compress code.

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This commit is contained in:
Jürg Lehni 2011-04-27 18:16:32 +01:00
parent f71967f3d3
commit c6d96784ba
1 changed files with 28 additions and 34 deletions
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62
src/path/Segment.js
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@ -144,46 +144,40 @@ var Segment = this.Segment = Base.extend({
var selected = !!selected, // convert to boolean
state = this._selectionState,
wasSelected = !!state,
pointSelected = !!(state & SelectionState.POINT),
handleInSelected = !!(state & SelectionState.HANDLE_IN),
handleOutSelected = !!(state & SelectionState.HANDLE_OUT);
// For performance reasons use array indices to access the various
// selection states: 0 = point, 1 = handleIn, 2 = handleOut
selection = [
!!(state & SelectionState.POINT),
!!(state & SelectionState.HANDLE_IN),
!!(state & SelectionState.HANDLE_OUT)
];
if (point == this._point) {
if (pointSelected != selected) {
if (selected) {
handleInSelected = handleOutSelected = false;
} else {
var previous = this.getPrevious(),
next = this.getNext();
// When deselecting a point, the handles get selected
// instead depending on the selection state of their
// neighbors.
handleInSelected = previous
&& (previous._point.isSelected()
|| previous._handleOut.isSelected());
handleOutSelected = next
&& (next._point.isSelected()
|| next._handleOut.isSelected());
}
pointSelected = selected;
if (selected) {
// We're selecting point, deselect the handles
selection[1] = selection[2] = false;
} else {
var previous = this.getPrevious(),
next = this.getNext();
// When deselecting a point, the handles get selected instead
// depending on the selection state of their neighbors.
selection[1] = previous && (previous._point.isSelected()
|| previous._handleOut.isSelected());
selection[2] = next && (next._point.isSelected()
|| next._handleIn.isSelected());
}
} else if (point == this._handleIn) {
if (handleInSelected != selected) {
selection[0] = selected;
} else {
var index = point == this._handleIn ? 1 : 2;
if (selection[index] != selected) {
// When selecting handles, the point get deselected.
if (selected)
pointSelected = false;
handleInSelected = selected;
}
} else if (point == this._handleOut) {
if (handleOutSelected != selected) {
// When selecting handles, the point get deselected.
if (selected)
pointSelected = false;
handleOutSelected = selected;
selection[0] = false;
selection[index] = selected;
}
}
this._selectionState = (pointSelected ? SelectionState.POINT : 0)
| (handleInSelected ? SelectionState.HANDLE_IN : 0)
| (handleOutSelected ? SelectionState.HANDLE_OUT : 0);
this._selectionState = (selection[0] ? SelectionState.POINT : 0)
| (selection[1] ? SelectionState.HANDLE_IN : 0)
| (selection[2] ? SelectionState.HANDLE_OUT : 0);
// If the selection state of the segment has changed, we need to let
// it's path know and possibly add or remove it from
// document._selectedItems