Mercurial > projects > dwt-win

comparison dwt/dnd/TreeDropTargetEffect.d @ 213:36f5cb12e1a2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Update to SWT 3.4M7
author Frank Benoit <benoit@tionex.de>
date Sat, 17 May 2008 17:34:28 +0200
parents 35669d0d0dc5
children e2affbeb686d
comparison
equal deleted inserted replaced
212:ab60f3309436 213:36f5cb12e1a2
10 * Port to the D programming language: 10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de> 11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/ 12 *******************************************************************************/
13 module dwt.dnd.TreeDropTargetEffect; 13 module dwt.dnd.TreeDropTargetEffect;
14 14
15 import dwt.DWT;
15 import dwt.graphics.Point; 16 import dwt.graphics.Point;
16 import dwt.internal.win32.OS; 17 import dwt.internal.win32.OS;
18 import dwt.widgets.Event;
17 import dwt.widgets.Tree; 19 import dwt.widgets.Tree;
18 import dwt.widgets.TreeItem; 20 import dwt.widgets.TreeItem;
19 21
20 import dwt.dnd.DropTargetEffect; 22 import dwt.dnd.DropTargetEffect;
21 import dwt.dnd.DropTargetEvent; 23 import dwt.dnd.DropTargetEvent;
57 */ 59 */
58 public class TreeDropTargetEffect : DropTargetEffect { 60 public class TreeDropTargetEffect : DropTargetEffect {
59 static final int SCROLL_HYSTERESIS = 200; // milli seconds 61 static final int SCROLL_HYSTERESIS = 200; // milli seconds
60 static final int EXPAND_HYSTERESIS = 1000; // milli seconds 62 static final int EXPAND_HYSTERESIS = 1000; // milli seconds
61 63
62 int dropIndex; 64 int /*long*/ dropIndex;
63 int scrollIndex; 65 int scrollIndex;
64 long scrollBeginTime; 66 long scrollBeginTime;
65 int expandIndex; 67 int /*long*/ expandIndex;
66 long expandBeginTime; 68 long expandBeginTime;
67 TreeItem insertItem; 69 TreeItem insertItem;
68 bool insertBefore; 70 bool insertBefore;
69 71
70 /** 72 /**
169 coordinates = tree.toControl(coordinates); 171 coordinates = tree.toControl(coordinates);
170 TVHITTESTINFO lpht; 172 TVHITTESTINFO lpht;
171 lpht.pt.x = coordinates.x; 173 lpht.pt.x = coordinates.x;
172 lpht.pt.y = coordinates.y; 174 lpht.pt.y = coordinates.y;
173 OS.SendMessage (handle, OS.TVM_HITTEST, 0, &lpht); 175 OS.SendMessage (handle, OS.TVM_HITTEST, 0, &lpht);
174 int hItem = cast(int) lpht.hItem; 176 auto hItem = lpht.hItem;
175 if ((effect & DND.FEEDBACK_SCROLL) is 0) { 177 if ((effect & DND.FEEDBACK_SCROLL) is 0) {
176 scrollBeginTime = 0; 178 scrollBeginTime = 0;
177 scrollIndex = -1; 179 scrollIndex = -1;
178 } else { 180 } else {
179 if (hItem !is -1 && scrollIndex is hItem && scrollBeginTime !is 0) { 181 if (hItem !is cast(HTREEITEM)-1 && cast(HTREEITEM)scrollIndex is hItem && scrollBeginTime !is 0) {
180 if (System.currentTimeMillis() >= scrollBeginTime) { 182 if (System.currentTimeMillis() >= scrollBeginTime) {
181 int topItem = OS.SendMessage(handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0); 183 auto topItem = cast(HTREEITEM)OS.SendMessage(handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
182 int nextItem = OS.SendMessage(handle, OS.TVM_GETNEXTITEM, hItem is topItem ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE, hItem); 184 auto nextItem = cast(HTREEITEM)OS.SendMessage(handle, OS.TVM_GETNEXTITEM, hItem is topItem ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE, hItem);
183 bool scroll = true; 185 bool scroll = true;
184 if (hItem is topItem) { 186 if (hItem is topItem) {
185 scroll = nextItem !is 0; 187 scroll = nextItem !is null;
186 } else { 188 } else {
187 RECT itemRect; 189 RECT itemRect;
188 itemRect.left = nextItem; 190 if (OS.TreeView_GetItemRect (handle, nextItem, &itemRect, true)) {
189 if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, &itemRect) !is 0) {
190 RECT rect; 191 RECT rect;
191 OS.GetClientRect (handle, &rect); 192 OS.GetClientRect (handle, &rect);
192 POINT pt; 193 POINT pt;
193 pt.x = itemRect.left; 194 pt.x = itemRect.left;
194 pt.y = itemRect.top; 195 pt.y = itemRect.top;
205 scrollBeginTime = 0; 206 scrollBeginTime = 0;
206 scrollIndex = -1; 207 scrollIndex = -1;
207 } 208 }
208 } else { 209 } else {
209 scrollBeginTime = System.currentTimeMillis() + SCROLL_HYSTERESIS; 210 scrollBeginTime = System.currentTimeMillis() + SCROLL_HYSTERESIS;
210 scrollIndex = hItem; 211 scrollIndex = cast(int)hItem;
211 } 212 }
212 } 213 }
213 if ((effect & DND.FEEDBACK_EXPAND) is 0) { 214 if ((effect & DND.FEEDBACK_EXPAND) is 0) {
214 expandBeginTime = 0; 215 expandBeginTime = 0;
215 expandIndex = -1; 216 expandIndex = -1;
216 } else { 217 } else {
217 if (hItem !is -1 && expandIndex is hItem && expandBeginTime !is 0) { 218 if (cast(int)hItem !is -1 && expandIndex is cast(int)hItem && expandBeginTime !is 0) {
218 if (System.currentTimeMillis() >= expandBeginTime) { 219 if (System.currentTimeMillis() >= expandBeginTime) {
219 if (OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, hItem) !is 0) { 220 if (OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, hItem) !is 0) {
220 TVITEM tvItem; 221 TreeItem item = cast(TreeItem)tree.getDisplay().findWidget(tree.handle, cast(int)hItem);
221 tvItem.hItem = cast(HANDLE) hItem; 222 if (item !is null && !item.getExpanded()) {
222 tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_STATE; 223 item.setExpanded(true);
223 OS.SendMessage (handle, OS.TVM_GETITEM, 0, &tvItem);
224 if ((tvItem.state & OS.TVIS_EXPANDED) is 0) {
225 OS.SendMessage (handle, OS.TVM_EXPAND, OS.TVE_EXPAND, hItem);
226 tree.redraw(); 224 tree.redraw();
225 Event expandEvent = new Event ();
226 expandEvent.item = item;
227 tree.notifyListeners(DWT.Expand, expandEvent);
227 } 228 }
228 } 229 }
229 expandBeginTime = 0; 230 expandBeginTime = 0;
230 expandIndex = -1; 231 expandIndex = -1;
231 } 232 }
232 } else { 233 } else {
233 expandBeginTime = System.currentTimeMillis() + EXPAND_HYSTERESIS; 234 expandBeginTime = System.currentTimeMillis() + EXPAND_HYSTERESIS;
234 expandIndex = hItem; 235 expandIndex = cast(int)hItem;
235 } 236 }
236 } 237 }
237 if (dropIndex !is -1 && (dropIndex !is hItem || (effect & DND.FEEDBACK_SELECT) is 0)) { 238 if (dropIndex !is -1 && (dropIndex !is cast(int)hItem || (effect & DND.FEEDBACK_SELECT) is 0)) {
238 TVITEM tvItem; 239 TVITEM tvItem;
239 tvItem.hItem = cast(HANDLE) dropIndex; 240 tvItem.hItem = cast(HANDLE) dropIndex;
240 tvItem.mask = OS.TVIF_STATE; 241 tvItem.mask = OS.TVIF_STATE;
241 tvItem.stateMask = OS.TVIS_DROPHILITED; 242 tvItem.stateMask = OS.TVIS_DROPHILITED;
242 tvItem.state = 0; 243 tvItem.state = 0;
243 OS.SendMessage (handle, OS.TVM_SETITEM, 0, &tvItem); 244 OS.SendMessage (handle, OS.TVM_SETITEM, 0, &tvItem);
244 dropIndex = -1; 245 dropIndex = -1;
245 } 246 }
246 if (hItem !is -1 && hItem !is dropIndex && (effect & DND.FEEDBACK_SELECT) !is 0) { 247 if (cast(int)hItem !is -1 && cast(int)hItem !is dropIndex && (effect & DND.FEEDBACK_SELECT) !is 0) {
247 TVITEM tvItem; 248 TVITEM tvItem;
248 tvItem.hItem = cast(HANDLE) hItem; 249 tvItem.hItem = cast(HANDLE) hItem;
249 tvItem.mask = OS.TVIF_STATE; 250 tvItem.mask = OS.TVIF_STATE;
250 tvItem.stateMask = OS.TVIS_DROPHILITED; 251 tvItem.stateMask = OS.TVIS_DROPHILITED;
251 tvItem.state = OS.TVIS_DROPHILITED; 252 tvItem.state = OS.TVIS_DROPHILITED;
252 OS.SendMessage (handle, OS.TVM_SETITEM, 0, &tvItem); 253 OS.SendMessage (handle, OS.TVM_SETITEM, 0, &tvItem);
253 dropIndex = hItem; 254 dropIndex = cast(int)hItem;
254 } 255 }
255 if ((effect & DND.FEEDBACK_INSERT_BEFORE) !is 0 || (effect & DND.FEEDBACK_INSERT_AFTER) !is 0) { 256 if ((effect & DND.FEEDBACK_INSERT_BEFORE) !is 0 || (effect & DND.FEEDBACK_INSERT_AFTER) !is 0) {
256 bool before = (effect & DND.FEEDBACK_INSERT_BEFORE) !is 0; 257 bool before = (effect & DND.FEEDBACK_INSERT_BEFORE) !is 0;
257 /* 258 /*
258 * Bug in Windows. When TVM_SETINSERTMARK is used to set 259 * Bug in Windows. When TVM_SETINSERTMARK is used to set
261 * the insert mark properly. The fix is to hide and show 262 * the insert mark properly. The fix is to hide and show
262 * the insert mark whenever an item is expanded or collapsed. 263 * the insert mark whenever an item is expanded or collapsed.
263 * Since the insert mark can not be queried from the tree, 264 * Since the insert mark can not be queried from the tree,
264 * use the Tree API rather than calling the OS directly. 265 * use the Tree API rather than calling the OS directly.
265 */ 266 */
266 TreeItem item = cast(TreeItem)tree.getDisplay().findWidget(tree.handle, hItem); 267 TreeItem item = cast(TreeItem)tree.getDisplay().findWidget(tree.handle, cast(int)hItem);
267 if (item !is null) { 268 if (item !is null) {
268 if (item !is insertItem || before !is insertBefore) { 269 if (item !is insertItem || before !is insertBefore) {
269 tree.setInsertMark(item, before); 270 tree.setInsertMark(item, before);
270 } 271 }
271 insertItem = item; 272 insertItem = item;