boolean start(int x, int y) {
clear();
final ZLTextRegion region =
myView.findRegion(x, y, ZLTextView.MAX_SELECTION_DISTANCE, ZLTextRegion.AnyRegionFilter);
if (region == null) {
return false;
}
myRightMostRegionSoul = myLeftMostRegionSoul = region.getSoul();
return true;
}
void expandTo(int x, int y) {
if (isEmpty()) {
return;
}
final ZLTextElementAreaVector vector = myView.myCurrentPage.TextElementMap;
final ZLTextElementArea firstArea = vector.getFirstArea();
final ZLTextElementArea lastArea = vector.getLastArea();
if (firstArea != null && y < firstArea.YStart) {
if (myScroller != null && myScroller.scrollsForward()) {
myScroller.stop();
myScroller = null;
}
if (myScroller == null) {
myScroller = new Scroller(false, x, y);
return;
}
} else if (lastArea != null
&& y + ZLTextSelectionCursor.getHeight() / 2 + ZLTextSelectionCursor.getAccent() / 2
> lastArea.YEnd) {
if (myScroller != null && !myScroller.scrollsForward()) {
myScroller.stop();
myScroller = null;
}
if (myScroller == null) {
myScroller = new Scroller(true, x, y);
return;
}
} else {
if (myScroller != null) {
myScroller.stop();
myScroller = null;
}
}
if (myScroller != null) {
myScroller.setXY(x, y);
}
ZLTextRegion region =
myView.findRegion(x, y, ZLTextView.MAX_SELECTION_DISTANCE, ZLTextRegion.AnyRegionFilter);
if (region == null && myScroller != null) {
region = myView.findRegion(x, y, ZLTextRegion.AnyRegionFilter);
}
if (region == null) {
return;
}
final ZLTextRegion.Soul soul = region.getSoul();
if (myCursorInMovement == ZLTextSelectionCursor.Right) {
if (myLeftMostRegionSoul.compareTo(soul) <= 0) {
myRightMostRegionSoul = soul;
} else {
myRightMostRegionSoul = myLeftMostRegionSoul;
myLeftMostRegionSoul = soul;
myCursorInMovement = ZLTextSelectionCursor.Left;
}
} else {
if (myRightMostRegionSoul.compareTo(soul) >= 0) {
myLeftMostRegionSoul = soul;
} else {
myLeftMostRegionSoul = myRightMostRegionSoul;
myRightMostRegionSoul = soul;
myCursorInMovement = ZLTextSelectionCursor.Right;
}
}
if (myCursorInMovement == ZLTextSelectionCursor.Right) {
if (hasAPartAfterPage(myView.myCurrentPage)) {
myView.scrollPage(true, ZLTextView.ScrollingMode.SCROLL_LINES, 1);
myView.Application.getViewWidget().reset();
myView.preparePaintInfo();
}
} else {
if (hasAPartBeforePage(myView.myCurrentPage)) {
myView.scrollPage(false, ZLTextView.ScrollingMode.SCROLL_LINES, 1);
myView.Application.getViewWidget().reset();
myView.preparePaintInfo();
}
}
}