diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/TreeDragAndDropEffect.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/TreeDragAndDropEffect.java | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/TreeDragAndDropEffect.java b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/TreeDragAndDropEffect.java deleted file mode 100644 index 2f468db899..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/win32/org/eclipse/swt/dnd/TreeDragAndDropEffect.java +++ /dev/null @@ -1,223 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2006 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.swt.dnd; - -import org.eclipse.swt.*; -import org.eclipse.swt.graphics.*; -import org.eclipse.swt.internal.win32.*; -import org.eclipse.swt.widgets.*; - -class TreeDragAndDropEffect extends DragAndDropEffect { - Tree tree; - int dropIndex; - int scrollIndex; - long scrollBeginTime; - int expandIndex; - long expandBeginTime; - TreeItem insertItem; - boolean insertBefore; - - static final int SCROLL_HYSTERESIS = 200; // milli seconds - static final int EXPAND_HYSTERESIS = 300; // milli seconds - - -TreeDragAndDropEffect(Tree tree) { - this.tree = tree; -} - -int checkEffect(int effect) { - // Some effects are mutually exclusive. Make sure that only one of the mutually exclusive effects has been specified. - if ((effect & DND.FEEDBACK_SELECT) != 0) effect = effect & ~DND.FEEDBACK_INSERT_AFTER & ~DND.FEEDBACK_INSERT_BEFORE; - if ((effect & DND.FEEDBACK_INSERT_BEFORE) != 0) effect = effect & ~DND.FEEDBACK_INSERT_AFTER; - return effect; -} - -Widget getItem(int x, int y) { - Point coordinates = new Point(x, y); - coordinates = tree.toControl(coordinates); - TreeItem item = tree.getItem(coordinates); - if (item == null) { - Rectangle area = tree.getClientArea(); - if (area.contains(coordinates)) { - // Scan across the width of the tree. - for (int x1 = area.x; x1 < area.x + area.width; x1++) { - Point pt = new Point(x1, coordinates.y); - item = tree.getItem(pt); - if (item != null) { - break; - } - } - } - } - return item; -} - -ImageData getDragSourceImage(int x, int y) { - TreeItem[] selection = tree.getSelection(); - if (selection.length == 0) return null; - int treeImageList = OS.SendMessage (tree.handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0); - if (treeImageList != 0) { - int count = Math.min(selection.length, 10); - Rectangle bounds = selection[0].getBounds(0); - for (int i = 1; i < count; i++) { - bounds = bounds.union(selection[i].getBounds(0)); - } - int hDC = OS.GetDC(0); - int hDC1 = OS.CreateCompatibleDC(hDC); - int bitmap = OS.CreateCompatibleBitmap(hDC, bounds.width, bounds.height); - int hOldBitmap = OS.SelectObject(hDC1, bitmap); - RECT rect = new RECT(); - rect.right = bounds.width; - rect.bottom = bounds.height; - int hBrush = OS.GetStockObject(OS.WHITE_BRUSH); - OS.FillRect(hDC1, rect, hBrush); - for (int i = 0; i < count; i++) { - TreeItem selected = selection[i]; - Rectangle cell = selected.getBounds(0); - int imageList = OS.SendMessage(tree.handle, OS.TVM_CREATEDRAGIMAGE, 0, selected.handle); - OS.ImageList_Draw(imageList, 0, hDC1, cell.x - bounds.x, cell.y - bounds.y, OS.ILD_SELECTED); - OS.ImageList_Destroy(imageList); - } - OS.SelectObject(hDC1, hOldBitmap); - OS.DeleteDC (hDC1); - OS.ReleaseDC (0, hDC); - Display display = tree.getDisplay(); - Image image = Image.win32_new(display, SWT.BITMAP, bitmap); - ImageData imageData = image.getImageData(); - image.dispose(); - return imageData; - } - return null; -} - -void showDropTargetEffect(int effect, int x, int y) { - effect = checkEffect(effect); - int handle = tree.handle; - Point coordinates = new Point(x, y); - coordinates = tree.toControl(coordinates); - TVHITTESTINFO lpht = new TVHITTESTINFO (); - lpht.x = coordinates.x; - lpht.y = coordinates.y; - OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht); - int hItem = lpht.hItem; - if ((effect & DND.FEEDBACK_SCROLL) == 0) { - scrollBeginTime = 0; - scrollIndex = -1; - } else { - if (hItem != -1 && scrollIndex == hItem && scrollBeginTime != 0) { - if (System.currentTimeMillis() >= scrollBeginTime) { - int topItem = OS.SendMessage(handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0); - int nextItem = OS.SendMessage(handle, OS.TVM_GETNEXTITEM, hItem == topItem ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE, hItem); - boolean scroll = true; - if (hItem == topItem) { - scroll = nextItem != 0; - } else { - RECT itemRect = new RECT (); - itemRect.left = nextItem; - if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, itemRect) != 0) { - RECT rect = new RECT (); - OS.GetClientRect (handle, rect); - POINT pt = new POINT (); - pt.x = itemRect.left; - pt.y = itemRect.top; - if (OS.PtInRect (rect, pt)) { - pt.y = itemRect.bottom; - if (OS.PtInRect (rect, pt)) scroll = false; - } - } - } - if (scroll) { - OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, nextItem); - tree.redraw(); - } - scrollBeginTime = 0; - scrollIndex = -1; - } - } else { - scrollBeginTime = System.currentTimeMillis() + SCROLL_HYSTERESIS; - scrollIndex = hItem; - } - } - if ((effect & DND.FEEDBACK_EXPAND) == 0) { - expandBeginTime = 0; - expandIndex = -1; - } else { - if (hItem != -1 && expandIndex == hItem && expandBeginTime != 0) { - if (System.currentTimeMillis() >= expandBeginTime) { - if (OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, hItem) != 0) { - TVITEM tvItem = new TVITEM (); - tvItem.hItem = hItem; - tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_STATE; - OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); - if ((tvItem.state & OS.TVIS_EXPANDED) == 0) { - OS.SendMessage (handle, OS.TVM_EXPAND, OS.TVE_EXPAND, hItem); - tree.redraw(); - } - } - expandBeginTime = 0; - expandIndex = -1; - } - } else { - expandBeginTime = System.currentTimeMillis() + EXPAND_HYSTERESIS; - expandIndex = hItem; - } - } - if (dropIndex != -1 && (dropIndex != hItem || (effect & DND.FEEDBACK_SELECT) == 0)) { - TVITEM tvItem = new TVITEM (); - tvItem.hItem = dropIndex; - tvItem.mask = OS.TVIF_STATE; - tvItem.stateMask = OS.TVIS_DROPHILITED; - tvItem.state = 0; - OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); - dropIndex = -1; - } - if (hItem != -1 && hItem != dropIndex && (effect & DND.FEEDBACK_SELECT) != 0) { - TVITEM tvItem = new TVITEM (); - tvItem.hItem = hItem; - tvItem.mask = OS.TVIF_STATE; - tvItem.stateMask = OS.TVIS_DROPHILITED; - tvItem.state = OS.TVIS_DROPHILITED; - OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); - dropIndex = hItem; - } - if ((effect & DND.FEEDBACK_INSERT_BEFORE) != 0 || (effect & DND.FEEDBACK_INSERT_AFTER) != 0) { - boolean before = (effect & DND.FEEDBACK_INSERT_BEFORE) != 0; - /* - * Bug in Windows. When TVM_SETINSERTMARK is used to set - * an insert mark for a tree and an item is expanded or - * collapsed near the insert mark, the tree does not redraw - * the insert mark properly. The fix is to hide and show - * the insert mark whenever an item is expanded or collapsed. - * Since the insert mark can not be queried from the tree, - * use the Tree API rather than calling the OS directly. - */ - TreeItem item = (TreeItem)tree.getDisplay().findWidget(tree.handle, hItem); - if (item != null) { - if (item != insertItem || before != insertBefore) { - tree.setInsertMark(item, before); - } - insertItem = item; - insertBefore = before; - } else { - if (insertItem != null) { - tree.setInsertMark(null, false); - } - insertItem = null; - } - } else { - if (insertItem != null) { - tree.setInsertMark(null, false); - } - insertItem = null; - } - return; -} -} |