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comparison dwt/widgets/Scrollable.d @ 108:6f75fdfa1bcd

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Change LRESULT to class, like done in the old DWT.
author Frank Benoit <benoit@tionex.de>
date Mon, 11 Feb 2008 02:44:32 +0100
parents 3926f6c95d6f
children ab60f3309436
comparison
equal deleted inserted replaced
106:e4a62cdcd2e0 108:6f75fdfa1bcd
86 */ 86 */
87 public this (Composite parent, int style) { 87 public this (Composite parent, int style) {
88 super (parent, style); 88 super (parent, style);
89 } 89 }
90 90
91 override LRESULT callWindowProc (HWND hwnd, int msg, int wParam, int lParam) { 91 override int callWindowProc (HWND hwnd, int msg, int wParam, int lParam) {
92 if (handle is null) return LRESULT.ZERO; 92 if (handle is null) return 0;
93 return cast(LRESULT) OS.DefWindowProc (hwnd, msg, wParam, lParam); 93 return OS.DefWindowProc (hwnd, msg, wParam, lParam);
94 } 94 }
95 95
96 /** 96 /**
97 * Given a desired <em>client area</em> for the receiver 97 * Given a desired <em>client area</em> for the receiver
98 * (as described by the arguments), returns the bounding 98 * (as described by the arguments), returns the bounding
259 } 259 }
260 260
261 override LRESULT WM_HSCROLL (int wParam, int lParam) { 261 override LRESULT WM_HSCROLL (int wParam, int lParam) {
262 trc(__LINE__); 262 trc(__LINE__);
263 LRESULT result = super.WM_HSCROLL (wParam, lParam); 263 LRESULT result = super.WM_HSCROLL (wParam, lParam);
264 if (result !is LRESULT.NULL) return result; 264 if (result !is null) return result;
265 265
266 /* 266 /*
267 * Bug on WinCE. lParam should be NULL when the message is not sent 267 * Bug on WinCE. lParam should be NULL when the message is not sent
268 * by a scroll bar control, but it contains the handle to the window. 268 * by a scroll bar control, but it contains the handle to the window.
269 * When the message is sent by a scroll bar control, it correctly 269 * When the message is sent by a scroll bar control, it correctly
277 } 277 }
278 278
279 override LRESULT WM_MOUSEWHEEL (int wParam, int lParam) { 279 override LRESULT WM_MOUSEWHEEL (int wParam, int lParam) {
280 trc(__LINE__); 280 trc(__LINE__);
281 LRESULT result = super.WM_MOUSEWHEEL (wParam, lParam); 281 LRESULT result = super.WM_MOUSEWHEEL (wParam, lParam);
282 if (result !is LRESULT.NULL) return result; 282 if (result !is null) return result;
283 283
284 /* 284 /*
285 * Translate WM_MOUSEWHEEL to WM_VSCROLL or WM_HSCROLL. 285 * Translate WM_MOUSEWHEEL to WM_VSCROLL or WM_HSCROLL.
286 */ 286 */
287 if ((state & CANVAS) !is 0) { 287 if ((state & CANVAS) !is 0) {
324 * then the application has already been notified. If not 324 * then the application has already been notified. If not
325 * explicitly send the event. 325 * explicitly send the event.
326 */ 326 */
327 int vPosition = verticalBar is null ? 0 : verticalBar.getSelection (); 327 int vPosition = verticalBar is null ? 0 : verticalBar.getSelection ();
328 int hPosition = horizontalBar is null ? 0 : horizontalBar.getSelection (); 328 int hPosition = horizontalBar is null ? 0 : horizontalBar.getSelection ();
329 LRESULT code = callWindowProc (handle, OS.WM_MOUSEWHEEL, wParam, lParam); 329 int code = callWindowProc (handle, OS.WM_MOUSEWHEEL, wParam, lParam);
330 if (verticalBar !is null) { 330 if (verticalBar !is null) {
331 int position = verticalBar.getSelection (); 331 int position = verticalBar.getSelection ();
332 if (position !is vPosition) { 332 if (position !is vPosition) {
333 Event event = new Event (); 333 Event event = new Event ();
334 event.detail = position < vPosition ? DWT.PAGE_UP : DWT.PAGE_DOWN; 334 event.detail = position < vPosition ? DWT.PAGE_UP : DWT.PAGE_DOWN;
341 Event event = new Event (); 341 Event event = new Event ();
342 event.detail = position < hPosition ? DWT.PAGE_UP : DWT.PAGE_DOWN; 342 event.detail = position < hPosition ? DWT.PAGE_UP : DWT.PAGE_DOWN;
343 horizontalBar.sendEvent (DWT.Selection, event); 343 horizontalBar.sendEvent (DWT.Selection, event);
344 } 344 }
345 } 345 }
346 return code; 346 return new LRESULT (code);
347 } 347 }
348 348
349 override LRESULT WM_SIZE (int wParam, int lParam) { 349 override LRESULT WM_SIZE (int wParam, int lParam) {
350 trc(__LINE__); 350 trc(__LINE__);
351 LRESULT code = callWindowProc (handle, OS.WM_SIZE, wParam, lParam); 351 int code = callWindowProc (handle, OS.WM_SIZE, wParam, lParam);
352 assert( code !is LRESULT.NULL );
353 super.WM_SIZE (wParam, lParam); 352 super.WM_SIZE (wParam, lParam);
354 // widget may be disposed at this point 353 // widget may be disposed at this point
355 if (code is 0) return LRESULT.ZERO; 354 if (code is 0) return LRESULT.ZERO;
356 return code; 355 return new LRESULT (code);
357 } 356 }
358 357
359 override LRESULT WM_VSCROLL (int wParam, int lParam) { 358 override LRESULT WM_VSCROLL (int wParam, int lParam) {
360 trc(__LINE__); 359 trc(__LINE__);
361 LRESULT result = super.WM_VSCROLL (wParam, lParam); 360 LRESULT result = super.WM_VSCROLL (wParam, lParam);
362 if (result !is LRESULT.NULL) return result; 361 if (result !is null) return result;
363 /* 362 /*
364 * Bug on WinCE. lParam should be NULL when the message is not sent 363 * Bug on WinCE. lParam should be NULL when the message is not sent
365 * by a scroll bar control, but it contains the handle to the window. 364 * by a scroll bar control, but it contains the handle to the window.
366 * When the message is sent by a scroll bar control, it correctly 365 * When the message is sent by a scroll bar control, it correctly
367 * contains the handle to the scroll bar. The fix is to check for 366 * contains the handle to the scroll bar. The fix is to check for
373 return result; 372 return result;
374 } 373 }
375 374
376 LRESULT wmScroll (ScrollBar bar, bool update, HWND hwnd, int msg, int wParam, int lParam) { 375 LRESULT wmScroll (ScrollBar bar, bool update, HWND hwnd, int msg, int wParam, int lParam) {
377 trc(__LINE__); 376 trc(__LINE__);
378 LRESULT result = LRESULT.NULL; 377 LRESULT result = null;
379 if (update) { 378 if (update) {
380 int type = msg is OS.WM_HSCROLL ? OS.SB_HORZ : OS.SB_VERT; 379 int type = msg is OS.WM_HSCROLL ? OS.SB_HORZ : OS.SB_VERT;
381 SCROLLINFO info; 380 SCROLLINFO info;
382 info.cbSize = SCROLLINFO.sizeof; 381 info.cbSize = SCROLLINFO.sizeof;
383 info.fMask = OS.SIF_TRACKPOS | OS.SIF_POS | OS.SIF_RANGE; 382 info.fMask = OS.SIF_TRACKPOS | OS.SIF_POS | OS.SIF_RANGE;
384 OS.GetScrollInfo (hwnd, type, &info); 383 OS.GetScrollInfo (hwnd, type, &info);
385 info.fMask = OS.SIF_POS; 384 info.fMask = OS.SIF_POS;
386 int code = wParam & 0xFFFF; 385 int code = wParam & 0xFFFF;
387 switch (code) { 386 switch (code) {
388 case OS.SB_ENDSCROLL: return LRESULT.NULL; 387 case OS.SB_ENDSCROLL: return null;
389 case OS.SB_THUMBPOSITION: 388 case OS.SB_THUMBPOSITION:
390 case OS.SB_THUMBTRACK: 389 case OS.SB_THUMBTRACK:
391 /* 390 /*
392 * Note: On WinCE, the value in SB_THUMBPOSITION is relative to nMin. 391 * Note: On WinCE, the value in SB_THUMBPOSITION is relative to nMin.
393 * Same for SB_THUMBPOSITION 'except' for the very first thumb track 392 * Same for SB_THUMBPOSITION 'except' for the very first thumb track
418 break; 417 break;
419 default: 418 default:
420 } 419 }
421 OS.SetScrollInfo (hwnd, type, &info, true); 420 OS.SetScrollInfo (hwnd, type, &info, true);
422 } else { 421 } else {
423 LRESULT code = callWindowProc (hwnd, msg, wParam, lParam); 422 int code = callWindowProc (hwnd, msg, wParam, lParam);
424 result = code is 0 ? LRESULT.ZERO : code; 423 result = code is 0 ? LRESULT.ZERO : new LRESULT (code);
425 } 424 }
426 bar.wmScrollChild (wParam, lParam); 425 bar.wmScrollChild (wParam, lParam);
427 return result; 426 return result;
428 } 427 }
429 428