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fixed drag&drop when spacing changes

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bancika
2011-01-21 23:06:48 +00:00
parent 9fdf7c3e46
commit 99d85a2d1f
2 changed files with 57 additions and 38 deletions
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diy-layout-creator --username bancika@gmail.com/DIYLC/src/org/diylc/presenter/Presenter.java
+47 -37
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@@ -652,49 +652,59 @@ public class Presenter implements IPlugInPort {
// We're dragging control point(s).
int dx = (scaledPoint.x - previousDragPoint.x);
int dy = (scaledPoint.y - previousDragPoint.y);
if (snapToGrid) {
dx = CalcUtils.roundToGrid(dx, currentProject.getGridSpacing());
dy = CalcUtils.roundToGrid(dy, currentProject.getGridSpacing());
// After we make the transfer and snap to grid, calculate actual dx
// and dy. We'll use them to translate the previous drag point.
int actualDx = 0;
int actualDy = 0;
// Do a simulation of the move to see if any of them will
// collide.
for (Map.Entry<IDIYComponent<?>, Set<Integer>> entry : controlPointMap.entrySet()) {
IDIYComponent<?> c = entry.getKey();
Point[] controlPoints = new Point[c.getControlPointCount()];
for (int i = 0; i < controlPoints.length; i++) {
controlPoints[i] = new Point(c.getControlPoint(i));
if (entry.getValue().contains(i)) {
controlPoints[i].translate(dx, dy);
if (snapToGrid) {
CalcUtils.snapPointToGrid(controlPoints[i], currentProject
.getGridSpacing());
}
}
}
for (int i = 0; i < controlPoints.length - 1; i++) {
for (int j = i + 1; j < controlPoints.length; j++) {
if (controlPoints[i].equals(controlPoints[j])) {
LOG.error("Control points collision detected, cannot make this move.");
return true;
}
}
}
}
// Only repaint if there's an actual change.
repaint = dx != 0 || dy != 0;
if (repaint) {
// Do a simulation of the move to see if any of them will
// collide.
for (Map.Entry<IDIYComponent<?>, Set<Integer>> entry : controlPointMap.entrySet()) {
IDIYComponent<?> c = entry.getKey();
Point[] controlPoints = new Point[c.getControlPointCount()];
for (int i = 0; i < controlPoints.length; i++) {
controlPoints[i] = new Point(c.getControlPoint(i));
if (entry.getValue().contains(i)) {
controlPoints[i].translate(dx, dy);
}
// Update all points.
for (Map.Entry<IDIYComponent<?>, Set<Integer>> entry : controlPointMap.entrySet()) {
IDIYComponent<?> c = entry.getKey();
drawingManager.invalidateComponent(c);
for (Integer index : entry.getValue()) {
Point p = new Point(c.getControlPoint(index));
p.translate(dx, dy);
if (snapToGrid) {
CalcUtils.snapPointToGrid(p, currentProject.getGridSpacing());
}
for (int i = 0; i < controlPoints.length - 1; i++) {
for (int j = i + 1; j < controlPoints.length; j++) {
if (controlPoints[i].equals(controlPoints[j])) {
LOG
.error("Control points collision detected, cannot make this move.");
return true;
}
}
}
}
previousDragPoint.translate(dx, dy);
// Update all points.
for (Map.Entry<IDIYComponent<?>, Set<Integer>> entry : controlPointMap.entrySet()) {
IDIYComponent<?> c = entry.getKey();
drawingManager.invalidateComponent(c);
for (Integer index : entry.getValue()) {
Point p = new Point(c.getControlPoint(index));
p.translate(dx, dy);
c.setControlPoint(p, index);
// When the first point is moved, calculate how much it
// actually moved after snapping.
if (actualDx == 0 && actualDy == 0) {
actualDx = p.x - c.getControlPoint(index).x;
actualDy = p.y - c.getControlPoint(index).y;
}
c.setControlPoint(p, index);
}
}
if (actualDx != 0 || actualDy != 0) {
previousDragPoint.translate(actualDx, actualDy);
repaint = true;
}
} else if (selectedComponents.isEmpty()
&& instantiationManager.getComponentTypeSlot() == null) {
// If there's no selection, the only thing to do is update the