public void show(int effect, int x, int y) {
effect = checkEffect(effect);
int handle = table.handle;
Point coordinates = new Point(x, y);
coordinates = table.toControl(coordinates);
LVHITTESTINFO pinfo = new LVHITTESTINFO();
pinfo.x = coordinates.x;
pinfo.y = coordinates.y;
OS.SendMessage(handle, OS.LVM_HITTEST, 0, pinfo);
if ((effect & DND.FEEDBACK_SCROLL) == 0) {
scrollBeginTime = 0;
scrollIndex = -1;
} else {
if (pinfo.iItem != -1 && scrollIndex == pinfo.iItem && scrollBeginTime != 0) {
if (System.currentTimeMillis() >= scrollBeginTime) {
int top = Math.max(0, OS.SendMessage(handle, OS.LVM_GETTOPINDEX, 0, 0));
int count = OS.SendMessage(handle, OS.LVM_GETITEMCOUNT, 0, 0);
int index =
(scrollIndex - 1 < top)
? Math.max(0, scrollIndex - 1)
: Math.min(count - 1, scrollIndex + 1);
OS.SendMessage(handle, OS.LVM_ENSUREVISIBLE, index, 0);
scrollBeginTime = 0;
scrollIndex = -1;
}
} else {
scrollBeginTime = System.currentTimeMillis() + SCROLL_HYSTERESIS;
scrollIndex = pinfo.iItem;
}
}
LVITEM lvItem = new LVITEM();
lvItem.stateMask = OS.LVIS_DROPHILITED;
OS.SendMessage(handle, OS.LVM_SETITEMSTATE, -1, lvItem);
if (pinfo.iItem != -1 && (effect & DND.FEEDBACK_SELECT) != 0) {
lvItem.state = OS.LVIS_DROPHILITED;
OS.SendMessage(handle, OS.LVM_SETITEMSTATE, pinfo.iItem, lvItem);
}
// Insert mark only supported on Windows XP with manifest
// if (OS.COMCTL32_MAJOR >= 6) {
// if ((effect & DND.FEEDBACK_INSERT_BEFORE) != 0 || (effect & DND.FEEDBACK_INSERT_AFTER) != 0)
// {
// LVINSERTMARK lvinsertmark = new LVINSERTMARK();
// lvinsertmark.cbSize = LVINSERTMARK.sizeof;
// lvinsertmark.dwFlags = (effect & DND.FEEDBACK_INSERT_BEFORE) != 0 ? 0 : OS.LVIM_AFTER;
// lvinsertmark.iItem = pinfo.iItem == -1 ? 0 : pinfo.iItem;
// int hItem = pinfo.iItem;
// OS.SendMessage (handle, OS.LVM_SETINSERTMARK, 0, lvinsertmark);
// } else {
// OS.SendMessage (handle, OS.LVM_SETINSERTMARK, 0, 0);
// }
// }
return;
}
void scrollInPixels(int destX, int destY, int x, int y, int width, int height, boolean all) {
forceResize();
boolean isFocus = caret != null && caret.isFocusCaret();
if (isFocus) caret.killFocus();
RECT sourceRect = new RECT();
OS.SetRect(sourceRect, x, y, x + width, y + height);
RECT clientRect = new RECT();
OS.GetClientRect(handle, clientRect);
if (OS.IntersectRect(clientRect, sourceRect, clientRect)) {
if (OS.IsWinCE) {
OS.UpdateWindow(handle);
} else {
int flags = OS.RDW_UPDATENOW | OS.RDW_ALLCHILDREN;
OS.RedrawWindow(handle, null, 0, flags);
}
}
int deltaX = destX - x, deltaY = destY - y;
if (findImageControl() != null) {
if (OS.IsWinCE) {
OS.InvalidateRect(handle, sourceRect, true);
} else {
int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
if (all) flags |= OS.RDW_ALLCHILDREN;
OS.RedrawWindow(handle, sourceRect, 0, flags);
}
OS.OffsetRect(sourceRect, deltaX, deltaY);
if (OS.IsWinCE) {
OS.InvalidateRect(handle, sourceRect, true);
} else {
int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
if (all) flags |= OS.RDW_ALLCHILDREN;
OS.RedrawWindow(handle, sourceRect, 0, flags);
}
} else {
int flags = OS.SW_INVALIDATE | OS.SW_ERASE;
/*
* Feature in Windows. If any child in the widget tree partially
* intersects the scrolling rectangle, Windows moves the child
* and copies the bits that intersect the scrolling rectangle but
* does not redraw the child.
*
* Feature in Windows. When any child in the widget tree does not
* intersect the scrolling rectangle but the parent does intersect,
* Windows does not move the child. This is the documented (but
* strange) Windows behavior.
*
* The fix is to not use SW_SCROLLCHILDREN and move the children
* explicitly after scrolling.
*/
// if (all) flags |= OS.SW_SCROLLCHILDREN;
OS.ScrollWindowEx(handle, deltaX, deltaY, sourceRect, null, 0, null, flags);
}
if (all) {
Control[] children = _getChildren();
for (int i = 0; i < children.length; i++) {
Control child = children[i];
Rectangle rect = child.getBoundsInPixels();
if (Math.min(x + width, rect.x + rect.width) >= Math.max(x, rect.x)
&& Math.min(y + height, rect.y + rect.height) >= Math.max(y, rect.y)) {
child.setLocationInPixels(rect.x + deltaX, rect.y + deltaY);
}
}
}
if (isFocus) caret.setFocus();
}
