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RegFlushKey: wrong error code.
[wine/testsucceed.git] / controls / scroll.c
blob099b123d6999a13ee56e0da3b594ef61faf5832b
1 /*
2 * Scrollbar control
3 *
4 * Copyright 1993 Martin Ayotte
5 * Copyright 1994, 1996 Alexandre Julliard
6 */
7
8 #include "windows.h"
9 #include "wine/winuser16.h"
10 #include "sysmetrics.h"
11 #include "scroll.h"
12 #include "heap.h"
13 #include "win.h"
14 #include "debug.h"
15
16
17 static HBITMAP32 hUpArrow = 0;
18 static HBITMAP32 hDnArrow = 0;
19 static HBITMAP32 hLfArrow = 0;
20 static HBITMAP32 hRgArrow = 0;
21 static HBITMAP32 hUpArrowD = 0;
22 static HBITMAP32 hDnArrowD = 0;
23 static HBITMAP32 hLfArrowD = 0;
24 static HBITMAP32 hRgArrowD = 0;
25 static HBITMAP32 hUpArrowI = 0;
26 static HBITMAP32 hDnArrowI = 0;
27 static HBITMAP32 hLfArrowI = 0;
28 static HBITMAP32 hRgArrowI = 0;
29
30 #define TOP_ARROW(flags,pressed) \
31 (((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow))
32 #define BOTTOM_ARROW(flags,pressed) \
33 (((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow))
34 #define LEFT_ARROW(flags,pressed) \
35 (((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow))
36 #define RIGHT_ARROW(flags,pressed) \
37 (((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow))
38
39
40 /* Minimum size of the rectangle between the arrows */
41 #define SCROLL_MIN_RECT 4
42
43 /* Minimum size of the thumb in pixels */
44 #define SCROLL_MIN_THUMB 6
45
46 /* Overlap between arrows and thumb */
47 #define SCROLL_ARROW_THUMB_OVERLAP 1
48
49 /* Delay (in ms) before first repetition when holding the button down */
50 #define SCROLL_FIRST_DELAY 200
51
52 /* Delay (in ms) between scroll repetitions */
53 #define SCROLL_REPEAT_DELAY 50
54
55 /* Scroll timer id */
56 #define SCROLL_TIMER 0
57
58 /* Scroll-bar hit testing */
59 enum SCROLL_HITTEST
60 {
61 SCROLL_NOWHERE, /* Outside the scroll bar */
62 SCROLL_TOP_ARROW, /* Top or left arrow */
63 SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
64 SCROLL_THUMB, /* Thumb rectangle */
65 SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
66 SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
67 };
68
69 /* What to do after SCROLL_SetScrollInfo() */
70 #define SA_SSI_HIDE 0x0001
71 #define SA_SSI_SHOW 0x0002
72 #define SA_SSI_REFRESH 0x0004
73 #define SA_SSI_REPAINT_ARROWS 0x0008
74
75 /* Thumb-tracking info */
76 static HWND32 SCROLL_TrackingWin = 0;
77 static INT32 SCROLL_TrackingBar = 0;
78 static INT32 SCROLL_TrackingPos = 0;
79 static INT32 SCROLL_TrackingVal = 0;
80 /* Hit test code of the last button-down event */
81 static enum SCROLL_HITTEST SCROLL_trackHitTest;
82 static BOOL32 SCROLL_trackVertical;
83
84 /* Is the moving thumb being displayed? */
85 static BOOL32 SCROLL_MovingThumb = FALSE;
86
87 /* Local functions */
88 static BOOL32 SCROLL_ShowScrollBar( HWND32 hwnd, INT32 nBar,
89 BOOL32 fShowH, BOOL32 fShowV );
90 static INT32 SCROLL_SetScrollInfo( HWND32 hwnd, INT32 nBar,
91 const SCROLLINFO *info, INT32 *action );
92
93 /***********************************************************************
94 * SCROLL_LoadBitmaps
95 */
96 static void SCROLL_LoadBitmaps(void)
97 {
98 hUpArrow = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_UPARROW) );
99 hDnArrow = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_DNARROW) );
100 hLfArrow = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_LFARROW) );
101 hRgArrow = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_RGARROW) );
102 hUpArrowD = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_UPARROWD) );
103 hDnArrowD = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_DNARROWD) );
104 hLfArrowD = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_LFARROWD) );
105 hRgArrowD = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_RGARROWD) );
106 hUpArrowI = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_UPARROWI) );
107 hDnArrowI = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_DNARROWI) );
108 hLfArrowI = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_LFARROWI) );
109 hRgArrowI = LoadBitmap32A( 0, MAKEINTRESOURCE32A(OBM_RGARROWI) );
110 }
111
112
113 /***********************************************************************
114 * SCROLL_GetPtrScrollInfo
115 */
116 static SCROLLBAR_INFO *SCROLL_GetPtrScrollInfo( WND* wndPtr, INT32 nBar )
117 {
118 SCROLLBAR_INFO *infoPtr;
119
120 if (!wndPtr) return NULL;
121 switch(nBar)
122 {
123 case SB_HORZ: infoPtr = (SCROLLBAR_INFO *)wndPtr->pHScroll; break;
124 case SB_VERT: infoPtr = (SCROLLBAR_INFO *)wndPtr->pVScroll; break;
125 case SB_CTL: infoPtr = (SCROLLBAR_INFO *)wndPtr->wExtra; break;
126 default: return NULL;
127 }
128
129 if (!infoPtr) /* Create the info structure if needed */
130 {
131 if ((infoPtr = HeapAlloc( SystemHeap, 0, sizeof(SCROLLBAR_INFO) )))
132 {
133 infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
134 infoPtr->MaxVal = 100;
135 infoPtr->flags = ESB_ENABLE_BOTH;
136 if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr;
137 else wndPtr->pVScroll = infoPtr;
138 }
139 if (!hUpArrow) SCROLL_LoadBitmaps();
140 }
141 return infoPtr;
142 }
143
144
145 /***********************************************************************
146 * SCROLL_GetScrollInfo
147 */
148 static SCROLLBAR_INFO *SCROLL_GetScrollInfo( HWND32 hwnd, INT32 nBar )
149 {
150 WND *wndPtr = WIN_FindWndPtr( hwnd );
151 return SCROLL_GetPtrScrollInfo( wndPtr, nBar );
152 }
153
154
155 /***********************************************************************
156 * SCROLL_GetScrollBarRect
157 *
158 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
159 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
160 * 'arrowSize' returns the width or height of an arrow (depending on
161 * the orientation of the scrollbar), 'thumbSize' returns the size of
162 * the thumb, and 'thumbPos' returns the position of the thumb
163 * relative to the left or to the top.
164 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
165 */
166 static BOOL32 SCROLL_GetScrollBarRect( HWND32 hwnd, INT32 nBar, RECT32 *lprect,
167 INT32 *arrowSize, INT32 *thumbSize,
168 INT32 *thumbPos )
169 {
170 INT32 pixels;
171 BOOL32 vertical;
172 WND *wndPtr = WIN_FindWndPtr( hwnd );
173
174 switch(nBar)
175 {
176 case SB_HORZ:
177 lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left;
178 lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
179 lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left;
180 lprect->bottom = lprect->top + SYSMETRICS_CYHSCROLL;
181 if(wndPtr->dwStyle & WS_BORDER) {
182 lprect->left--;
183 lprect->right++;
184 } else if(wndPtr->dwStyle & WS_VSCROLL)
185 lprect->right++;
186 vertical = FALSE;
187 break;
188
189 case SB_VERT:
190 lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
191 lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top;
192 lprect->right = lprect->left + SYSMETRICS_CXVSCROLL;
193 lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
194 if(wndPtr->dwStyle & WS_BORDER) {
195 lprect->top--;
196 lprect->bottom++;
197 } else if(wndPtr->dwStyle & WS_HSCROLL)
198 lprect->bottom++;
199 vertical = TRUE;
200 break;
201
202 case SB_CTL:
203 GetClientRect32( hwnd, lprect );
204 vertical = ((wndPtr->dwStyle & SBS_VERT) != 0);
205 break;
206
207 default:
208 return FALSE;
209 }
210
211 if (vertical) pixels = lprect->bottom - lprect->top;
212 else pixels = lprect->right - lprect->left;
213
214 if (pixels <= 2*SYSMETRICS_CXVSCROLL + SCROLL_MIN_RECT)
215 {
216 if (pixels > SCROLL_MIN_RECT)
217 *arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
218 else
219 *arrowSize = 0;
220 *thumbPos = *thumbSize = 0;
221 }
222 else
223 {
224 SCROLLBAR_INFO *info = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
225
226 *arrowSize = SYSMETRICS_CXVSCROLL;
227 pixels -= (2 * (SYSMETRICS_CXVSCROLL - SCROLL_ARROW_THUMB_OVERLAP));
228
229 if (info->Page)
230 {
231 *thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
232 if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
233 }
234 else *thumbSize = SYSMETRICS_CXVSCROLL;
235
236 if (((pixels -= *thumbSize ) < 0) ||
237 ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
238 {
239 /* Rectangle too small or scrollbar disabled -> no thumb */
240 *thumbPos = *thumbSize = 0;
241 }
242 else
243 {
244 INT32 max = info->MaxVal - MAX( info->Page-1, 0 );
245 if (info->MinVal >= max)
246 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
247 else
248 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
249 + pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
250 }
251 }
252 return vertical;
253 }
254
255
256 /***********************************************************************
257 * SCROLL_GetThumbVal
258 *
259 * Compute the current scroll position based on the thumb position in pixels
260 * from the top of the scroll-bar.
261 */
262 static UINT32 SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT32 *rect,
263 BOOL32 vertical, INT32 pos )
264 {
265 INT32 thumbSize;
266 INT32 pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
267
268 if ((pixels -= 2*(SYSMETRICS_CXVSCROLL - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
269 return infoPtr->MinVal;
270
271 if (infoPtr->Page)
272 {
273 thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
274 if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
275 }
276 else thumbSize = SYSMETRICS_CXVSCROLL;
277
278 if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
279
280 pos = MAX( 0, pos - (SYSMETRICS_CXVSCROLL - SCROLL_ARROW_THUMB_OVERLAP) );
281 if (pos > pixels) pos = pixels;
282
283 if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
284 else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
285 return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
286 }
287
288 /***********************************************************************
289 * SCROLL_PtInRectEx
290 */
291 static BOOL32 SCROLL_PtInRectEx( LPRECT32 lpRect, POINT32 pt, BOOL32 vertical )
292 {
293 RECT32 rect = *lpRect;
294
295 if (vertical)
296 {
297 rect.left -= lpRect->right - lpRect->left;
298 rect.right += lpRect->right - lpRect->left;
299 }
300 else
301 {
302 rect.top -= lpRect->bottom - lpRect->top;
303 rect.bottom += lpRect->bottom - lpRect->top;
304 }
305 return PtInRect32( &rect, pt );
306 }
307
308 /***********************************************************************
309 * SCROLL_ClipPos
310 */
311 static POINT32 SCROLL_ClipPos( LPRECT32 lpRect, POINT32 pt )
312 {
313 if( pt.x < lpRect->left )
314 pt.x = lpRect->left;
315 else
316 if( pt.x > lpRect->right )
317 pt.x = lpRect->right;
318
319 if( pt.y < lpRect->top )
320 pt.y = lpRect->top;
321 else
322 if( pt.y > lpRect->bottom )
323 pt.y = lpRect->bottom;
324
325 return pt;
326 }
327
328
329 /***********************************************************************
330 * SCROLL_HitTest
331 *
332 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
333 */
334 static enum SCROLL_HITTEST SCROLL_HitTest( HWND32 hwnd, INT32 nBar,
335 POINT32 pt, BOOL32 bDragging )
336 {
337 INT32 arrowSize, thumbSize, thumbPos;
338 RECT32 rect;
339
340 BOOL32 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
341 &arrowSize, &thumbSize, &thumbPos );
342
343 if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
344 (!PtInRect32( &rect, pt )) ) return SCROLL_NOWHERE;
345
346 if (vertical)
347 {
348 if (pt.y < rect.top + arrowSize) return SCROLL_TOP_ARROW;
349 if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW;
350 if (!thumbPos) return SCROLL_TOP_RECT;
351 pt.y -= rect.top;
352 if (pt.y < thumbPos) return SCROLL_TOP_RECT;
353 if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
354 }
355 else /* horizontal */
356 {
357 if (pt.x < rect.left + arrowSize) return SCROLL_TOP_ARROW;
358 if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW;
359 if (!thumbPos) return SCROLL_TOP_RECT;
360 pt.x -= rect.left;
361 if (pt.x < thumbPos) return SCROLL_TOP_RECT;
362 if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
363 }
364 return SCROLL_THUMB;
365 }
366
367
368 /***********************************************************************
369 * SCROLL_DrawArrows
370 *
371 * Draw the scroll bar arrows.
372 */
373 static void SCROLL_DrawArrows( HDC32 hdc, SCROLLBAR_INFO *infoPtr,
374 RECT32 *rect, INT32 arrowSize, BOOL32 vertical,
375 BOOL32 top_pressed, BOOL32 bottom_pressed )
376 {
377 HDC32 hdcMem = CreateCompatibleDC32( hdc );
378 HBITMAP32 hbmpPrev = SelectObject32( hdcMem, vertical ?
379 TOP_ARROW(infoPtr->flags, top_pressed)
380 : LEFT_ARROW(infoPtr->flags, top_pressed));
381
382 SetStretchBltMode32( hdc, STRETCH_DELETESCANS );
383 StretchBlt32( hdc, rect->left, rect->top,
384 vertical ? rect->right-rect->left : arrowSize,
385 vertical ? arrowSize : rect->bottom-rect->top,
386 hdcMem, 0, 0,
387 SYSMETRICS_CXVSCROLL, SYSMETRICS_CYHSCROLL,
388 SRCCOPY );
389
390 SelectObject32( hdcMem, vertical ?
391 BOTTOM_ARROW( infoPtr->flags, bottom_pressed )
392 : RIGHT_ARROW( infoPtr->flags, bottom_pressed ) );
393 if (vertical)
394 StretchBlt32( hdc, rect->left, rect->bottom - arrowSize,
395 rect->right - rect->left, arrowSize,
396 hdcMem, 0, 0,
397 SYSMETRICS_CXVSCROLL, SYSMETRICS_CYHSCROLL,
398 SRCCOPY );
399 else
400 StretchBlt32( hdc, rect->right - arrowSize, rect->top,
401 arrowSize, rect->bottom - rect->top,
402 hdcMem, 0, 0,
403 SYSMETRICS_CXVSCROLL, SYSMETRICS_CYHSCROLL,
404 SRCCOPY );
405 SelectObject32( hdcMem, hbmpPrev );
406 DeleteDC32( hdcMem );
407 }
408
409
410 /***********************************************************************
411 * SCROLL_DrawMovingThumb
412 *
413 * Draw the moving thumb rectangle.
414 */
415 static void SCROLL_DrawMovingThumb( HDC32 hdc, RECT32 *rect, BOOL32 vertical,
416 INT32 arrowSize, INT32 thumbSize )
417 {
418 RECT32 r = *rect;
419 if (vertical)
420 {
421 r.top += SCROLL_TrackingPos;
422 if (r.top < rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
423 r.top = rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
424 if (r.top + thumbSize >
425 rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
426 r.top = rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
427 - thumbSize;
428 r.bottom = r.top + thumbSize;
429 }
430 else
431 {
432 r.left += SCROLL_TrackingPos;
433 if (r.left < rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
434 r.left = rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
435 if (r.left + thumbSize >
436 rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
437 r.left = rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
438 - thumbSize;
439 r.right = r.left + thumbSize;
440 }
441 DrawFocusRect32( hdc, &r );
442 SCROLL_MovingThumb = !SCROLL_MovingThumb;
443 }
444
445
446 /***********************************************************************
447 * SCROLL_DrawInterior
448 *
449 * Draw the scroll bar interior (everything except the arrows).
450 */
451 static void SCROLL_DrawInterior( HWND32 hwnd, HDC32 hdc, INT32 nBar,
452 RECT32 *rect, INT32 arrowSize,
453 INT32 thumbSize, INT32 thumbPos,
454 UINT32 flags, BOOL32 vertical,
455 BOOL32 top_selected, BOOL32 bottom_selected )
456 {
457 RECT32 r;
458
459 /* Select the correct brush and pen */
460
461 SelectObject32( hdc, GetSysColorPen32(COLOR_WINDOWFRAME) );
462 if ((flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)
463 {
464 /* This ought to be the color of the parent window */
465 SelectObject32( hdc, GetSysColorBrush32(COLOR_WINDOW) );
466 }
467 else
468 {
469 if (nBar == SB_CTL) /* Only scrollbar controls send WM_CTLCOLOR */
470 {
471 HBRUSH32 hbrush = SendMessage32A(GetParent32(hwnd),
472 WM_CTLCOLORSCROLLBAR, hdc, hwnd );
473 SelectObject32( hdc, hbrush );
474 }
475 else SelectObject32( hdc, GetSysColorBrush32(COLOR_SCROLLBAR) );
476 }
477
478 /* Calculate the scroll rectangle */
479
480 r = *rect;
481 if (vertical)
482 {
483 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
484 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
485 }
486 else
487 {
488 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
489 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
490 }
491
492 /* Draw the scroll bar frame */
493
494 Rectangle32( hdc, r.left, r.top, r.right, r.bottom );
495
496 /* Draw the scroll rectangles and thumb */
497
498 if (!thumbPos) /* No thumb to draw */
499 {
500 PatBlt32( hdc, r.left+1, r.top+1, r.right - r.left - 2,
501 r.bottom - r.top - 2, PATCOPY );
502 return;
503 }
504
505 if (vertical)
506 {
507 PatBlt32( hdc, r.left + 1, r.top + 1,
508 r.right - r.left - 2,
509 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - 1,
510 top_selected ? 0x0f0000 : PATCOPY );
511 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
512 PatBlt32( hdc, r.left + 1, r.top + thumbSize,
513 r.right - r.left - 2,
514 r.bottom - r.top - thumbSize - 1,
515 bottom_selected ? 0x0f0000 : PATCOPY );
516 r.bottom = r.top + thumbSize;
517 }
518 else /* horizontal */
519 {
520 PatBlt32( hdc, r.left + 1, r.top + 1,
521 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - 1,
522 r.bottom - r.top - 2,
523 top_selected ? 0x0f0000 : PATCOPY );
524 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
525 PatBlt32( hdc, r.left + thumbSize, r.top + 1,
526 r.right - r.left - thumbSize - 1,
527 r.bottom - r.top - 2,
528 bottom_selected ? 0x0f0000 : PATCOPY );
529 r.right = r.left + thumbSize;
530 }
531
532 /* Draw the thumb */
533
534 SelectObject32( hdc, GetSysColorBrush32(COLOR_BTNFACE) );
535 Rectangle32( hdc, r.left, r.top, r.right, r.bottom );
536 r.top++, r.left++;
537 DrawEdge32( hdc, &r, EDGE_RAISED, BF_RECT );
538 if (SCROLL_MovingThumb &&
539 (SCROLL_TrackingWin == hwnd) &&
540 (SCROLL_TrackingBar == nBar))
541 {
542 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
543 SCROLL_MovingThumb = TRUE;
544 }
545 }
546
547
548 /***********************************************************************
549 * SCROLL_DrawScrollBar
550 *
551 * Redraw the whole scrollbar.
552 */
553 void SCROLL_DrawScrollBar( HWND32 hwnd, HDC32 hdc, INT32 nBar,
554 BOOL32 arrows, BOOL32 interior )
555 {
556 INT32 arrowSize, thumbSize, thumbPos;
557 RECT32 rect;
558 BOOL32 vertical;
559 WND *wndPtr = WIN_FindWndPtr( hwnd );
560 SCROLLBAR_INFO *infoPtr = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
561
562 if (!wndPtr || !infoPtr ||
563 ((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) ||
564 ((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) return;
565 if (!WIN_IsWindowDrawable( wndPtr, FALSE )) return;
566
567 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
568 &arrowSize, &thumbSize, &thumbPos );
569
570 /* Draw the arrows */
571
572 if (arrows && arrowSize)
573 {
574 if( vertical == SCROLL_trackVertical && GetCapture32() == hwnd )
575 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
576 (SCROLL_trackHitTest == SCROLL_TOP_ARROW),
577 (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
578 else
579 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
580 FALSE, FALSE );
581 }
582 if( interior )
583 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
584 thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
585 }
586
587
588 /***********************************************************************
589 * SCROLL_RefreshScrollBar
590 *
591 * Repaint the scroll bar interior after a SetScrollRange() or
592 * SetScrollPos() call.
593 */
594 static void SCROLL_RefreshScrollBar( HWND32 hwnd, INT32 nBar,
595 BOOL32 arrows, BOOL32 interior )
596 {
597 HDC32 hdc = GetDCEx32( hwnd, 0,
598 DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
599 if (!hdc) return;
600
601 SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
602 ReleaseDC32( hwnd, hdc );
603 }
604
605
606 /***********************************************************************
607 * SCROLL_HandleKbdEvent
608 *
609 * Handle a keyboard event (only for SB_CTL scrollbars).
610 */
611 static void SCROLL_HandleKbdEvent( HWND32 hwnd, WPARAM32 wParam )
612 {
613 WND *wndPtr = WIN_FindWndPtr( hwnd );
614 WPARAM32 msg;
615
616 switch(wParam)
617 {
618 case VK_PRIOR: msg = SB_PAGEUP; break;
619 case VK_NEXT: msg = SB_PAGEDOWN; break;
620 case VK_HOME: msg = SB_TOP; break;
621 case VK_END: msg = SB_BOTTOM; break;
622 case VK_UP: msg = SB_LINEUP; break;
623 case VK_DOWN: msg = SB_LINEDOWN; break;
624 default:
625 return;
626 }
627 SendMessage32A( GetParent32(hwnd),
628 (wndPtr->dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
629 msg, hwnd );
630 }
631
632
633 /***********************************************************************
634 * SCROLL_HandleScrollEvent
635 *
636 * Handle a mouse or timer event for the scrollbar.
637 * 'pt' is the location of the mouse event in client (for SB_CTL) or
638 * windows coordinates.
639 */
640 void SCROLL_HandleScrollEvent( HWND32 hwnd, INT32 nBar, UINT32 msg, POINT32 pt)
641 {
642 /* Previous mouse position for timer events */
643 static POINT32 prevPt;
644 /* Thumb position when tracking started. */
645 static UINT32 trackThumbPos;
646 /* Position in the scroll-bar of the last button-down event. */
647 static INT32 lastClickPos;
648 /* Position in the scroll-bar of the last mouse event. */
649 static INT32 lastMousePos;
650
651 enum SCROLL_HITTEST hittest;
652 HWND32 hwndOwner, hwndCtl;
653 BOOL32 vertical;
654 INT32 arrowSize, thumbSize, thumbPos;
655 RECT32 rect;
656 HDC32 hdc;
657
658 SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar );
659 if (!infoPtr) return;
660 if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN))
661 return;
662
663 hdc = GetDCEx32( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
664 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
665 &arrowSize, &thumbSize, &thumbPos );
666 hwndOwner = (nBar == SB_CTL) ? GetParent32(hwnd) : hwnd;
667 hwndCtl = (nBar == SB_CTL) ? hwnd : 0;
668
669 switch(msg)
670 {
671 case WM_LBUTTONDOWN: /* Initialise mouse tracking */
672 SCROLL_trackVertical = vertical;
673 SCROLL_trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
674 lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
675 lastMousePos = lastClickPos;
676 trackThumbPos = thumbPos;
677 prevPt = pt;
678 SetCapture32( hwnd );
679 if (nBar == SB_CTL) SetFocus32( hwnd );
680 break;
681
682 case WM_MOUSEMOVE:
683 hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE );
684 prevPt = pt;
685 break;
686
687 case WM_LBUTTONUP:
688 hittest = SCROLL_NOWHERE;
689 ReleaseCapture();
690 break;
691
692 case WM_SYSTIMER:
693 pt = prevPt;
694 hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
695 break;
696
697 default:
698 return; /* Should never happen */
699 }
700
701 TRACE(scroll, "Event: hwnd=%04x bar=%d msg=%x pt=%d,%d hit=%d\n",
702 hwnd, nBar, msg, pt.x, pt.y, hittest );
703
704 switch(SCROLL_trackHitTest)
705 {
706 case SCROLL_NOWHERE: /* No tracking in progress */
707 break;
708
709 case SCROLL_TOP_ARROW:
710 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
711 (hittest == SCROLL_trackHitTest), FALSE );
712 if (hittest == SCROLL_trackHitTest)
713 {
714 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
715 {
716 SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
717 SB_LINEUP, hwndCtl );
718 SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
719 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
720 (TIMERPROC32)0 );
721 }
722 }
723 else KillSystemTimer32( hwnd, SCROLL_TIMER );
724 break;
725
726 case SCROLL_TOP_RECT:
727 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
728 thumbPos, infoPtr->flags, vertical,
729 (hittest == SCROLL_trackHitTest), FALSE );
730 if (hittest == SCROLL_trackHitTest)
731 {
732 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
733 {
734 SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
735 SB_PAGEUP, hwndCtl );
736 SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
737 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
738 (TIMERPROC32)0 );
739 }
740 }
741 else KillSystemTimer32( hwnd, SCROLL_TIMER );
742 break;
743
744 case SCROLL_THUMB:
745 if (msg == WM_LBUTTONDOWN)
746 {
747 SCROLL_TrackingWin = hwnd;
748 SCROLL_TrackingBar = nBar;
749 SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
750 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
751 }
752 else if (msg == WM_LBUTTONUP)
753 {
754 SCROLL_TrackingWin = 0;
755 SCROLL_MovingThumb = FALSE;
756 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
757 thumbPos, infoPtr->flags, vertical,
758 FALSE, FALSE );
759 }
760 else /* WM_MOUSEMOVE */
761 {
762 UINT32 pos;
763
764 if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
765 else
766 {
767 pt = SCROLL_ClipPos( &rect, pt );
768 pos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
769 }
770 if (pos != lastMousePos)
771 {
772 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
773 arrowSize, thumbSize );
774 lastMousePos = pos;
775 SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
776 SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
777 vertical,
778 SCROLL_TrackingPos );
779 SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
780 MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
781 hwndCtl );
782 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
783 arrowSize, thumbSize );
784 }
785 }
786 break;
787
788 case SCROLL_BOTTOM_RECT:
789 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
790 thumbPos, infoPtr->flags, vertical,
791 FALSE, (hittest == SCROLL_trackHitTest) );
792 if (hittest == SCROLL_trackHitTest)
793 {
794 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
795 {
796 SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
797 SB_PAGEDOWN, hwndCtl );
798 SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
799 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
800 (TIMERPROC32)0 );
801 }
802 }
803 else KillSystemTimer32( hwnd, SCROLL_TIMER );
804 break;
805
806 case SCROLL_BOTTOM_ARROW:
807 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
808 FALSE, (hittest == SCROLL_trackHitTest) );
809 if (hittest == SCROLL_trackHitTest)
810 {
811 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
812 {
813 SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
814 SB_LINEDOWN, hwndCtl );
815 SetSystemTimer32( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
816 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
817 (TIMERPROC32)0 );
818 }
819 }
820 else KillSystemTimer32( hwnd, SCROLL_TIMER );
821 break;
822 }
823
824 if (msg == WM_LBUTTONUP)
825 {
826 hittest = SCROLL_trackHitTest;
827 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
828
829 if (hittest == SCROLL_THUMB)
830 {
831 UINT32 val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
832 trackThumbPos + lastMousePos - lastClickPos );
833 SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
834 MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
835 }
836 else
837 SendMessage32A( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
838 SB_ENDSCROLL, hwndCtl );
839 }
840
841 ReleaseDC32( hwnd, hdc );
842 }
843
844
845 /***********************************************************************
846 * ScrollBarWndProc
847 */
848 LRESULT WINAPI ScrollBarWndProc( HWND32 hwnd, UINT32 message, WPARAM32 wParam,
849 LPARAM lParam )
850 {
851 switch(message)
852 {
853 case WM_CREATE:
854 {
855 CREATESTRUCT32A *lpCreat = (CREATESTRUCT32A *)lParam;
856 if (lpCreat->style & SBS_SIZEBOX)
857 {
858 FIXME(scroll, "Unimplemented style SBS_SIZEBOX.\n" );
859 return 0;
860 }
861
862 if (lpCreat->style & SBS_VERT)
863 {
864 if (lpCreat->style & SBS_LEFTALIGN)
865 MoveWindow32( hwnd, lpCreat->x, lpCreat->y,
866 SYSMETRICS_CXVSCROLL+1, lpCreat->cy, FALSE );
867 else if (lpCreat->style & SBS_RIGHTALIGN)
868 MoveWindow32( hwnd,
869 lpCreat->x+lpCreat->cx-SYSMETRICS_CXVSCROLL-1,
870 lpCreat->y,
871 SYSMETRICS_CXVSCROLL+1, lpCreat->cy, FALSE );
872 }
873 else /* SBS_HORZ */
874 {
875 if (lpCreat->style & SBS_TOPALIGN)
876 MoveWindow32( hwnd, lpCreat->x, lpCreat->y,
877 lpCreat->cx, SYSMETRICS_CYHSCROLL+1, FALSE );
878 else if (lpCreat->style & SBS_BOTTOMALIGN)
879 MoveWindow32( hwnd,
880 lpCreat->x,
881 lpCreat->y+lpCreat->cy-SYSMETRICS_CYHSCROLL-1,
882 lpCreat->cx, SYSMETRICS_CYHSCROLL+1, FALSE );
883 }
884 }
885 if (!hUpArrow) SCROLL_LoadBitmaps();
886 TRACE(scroll, "ScrollBar creation, hwnd=%04x\n", hwnd );
887 return 0;
888
889 case WM_LBUTTONDOWN:
890 case WM_LBUTTONUP:
891 case WM_MOUSEMOVE:
892 case WM_SYSTIMER:
893 {
894 POINT32 pt;
895 CONV_POINT16TO32( (POINT16 *)&lParam, &pt );
896 SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt );
897 }
898 break;
899
900 case WM_KEYDOWN:
901 SCROLL_HandleKbdEvent( hwnd, wParam );
902 break;
903
904 case WM_ERASEBKGND:
905 return 1;
906
907 case WM_GETDLGCODE:
908 return DLGC_WANTARROWS; /* Windows returns this value */
909
910 case WM_PAINT:
911 {
912 PAINTSTRUCT32 ps;
913 HDC32 hdc = BeginPaint32( hwnd, &ps );
914 SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE );
915 EndPaint32( hwnd, &ps );
916 }
917 break;
918
919 case SBM_SETPOS16:
920 case SBM_SETPOS32:
921 return SetScrollPos32( hwnd, SB_CTL, wParam, (BOOL32)lParam );
922
923 case SBM_GETPOS16:
924 case SBM_GETPOS32:
925 return GetScrollPos32( hwnd, SB_CTL );
926
927 case SBM_SETRANGE16:
928 SetScrollRange32( hwnd, SB_CTL, LOWORD(lParam), HIWORD(lParam),
929 wParam /* FIXME: Is this correct? */ );
930 return 0;
931
932 case SBM_SETRANGE32:
933 SetScrollRange32( hwnd, SB_CTL, wParam, lParam, FALSE );
934 return 0; /* FIXME: return previous position */
935
936 case SBM_GETRANGE16:
937 FIXME(scroll, "don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n", wParam, lParam );
938 return 0;
939
940 case SBM_GETRANGE32:
941 GetScrollRange32( hwnd, SB_CTL, (LPINT32)wParam, (LPINT32)lParam );
942 return 0;
943
944 case SBM_ENABLE_ARROWS16:
945 case SBM_ENABLE_ARROWS32:
946 return EnableScrollBar32( hwnd, SB_CTL, wParam );
947
948 case SBM_SETRANGEREDRAW32:
949 SetScrollRange32( hwnd, SB_CTL, wParam, lParam, TRUE );
950 return 0; /* FIXME: return previous position */
951
952 case SBM_SETSCROLLINFO32:
953 return SetScrollInfo32( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
954
955 case SBM_GETSCROLLINFO32:
956 return GetScrollInfo32( hwnd, SB_CTL, (SCROLLINFO *)lParam );
957
958 case 0x00e5:
959 case 0x00e7:
960 case 0x00e8:
961 case 0x00eb:
962 case 0x00ec:
963 case 0x00ed:
964 case 0x00ee:
965 case 0x00ef:
966 ERR(scroll, "unknown Win32 msg %04x wp=%08x lp=%08lx\n",
967 message, wParam, lParam );
968 break;
969
970 default:
971 if (message >= WM_USER)
972 WARN(scroll, "unknown msg %04x wp=%04x lp=%08lx\n",
973 message, wParam, lParam );
974 return DefWindowProc32A( hwnd, message, wParam, lParam );
975 }
976 return 0;
977 }
978
979
980 /*************************************************************************
981 * SetScrollInfo16 (USER.475)
982 */
983 INT16 WINAPI SetScrollInfo16( HWND16 hwnd, INT16 nBar, const SCROLLINFO *info,
984 BOOL16 bRedraw )
985 {
986 return (INT16)SetScrollInfo32( hwnd, nBar, info, bRedraw );
987 }
988
989
990 /*************************************************************************
991 * SetScrollInfo32 (USER32.501)
992 * SetScrollInfo32 can be used to set the position, upper bound,
993 * lower bound, and page size of a scrollbar control.
994 *
995 * RETURNS
996 * Scrollbar position
997 *
998 * NOTE
999 * For 100 lines of text to be displayed in a window of 25 lines,
1000 * one would for instance use info->nMin=0, info->nMax=75
1001 * (corresponding to the 76 different positions of the window on
1002 * the text), and info->nPage=25.
1003 */
1004 INT32 WINAPI SetScrollInfo32(
1005 HWND32 hwnd /* [I] Handle of window whose scrollbar will be affected */,
1006 INT32 nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1007 const SCROLLINFO *info /* [I] Specifies what to change and new values */,
1008 BOOL32 bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1009 {
1010 INT32 action;
1011 INT32 retVal = SCROLL_SetScrollInfo( hwnd, nBar, info, &action );
1012
1013 if( action & SA_SSI_HIDE )
1014 SCROLL_ShowScrollBar( hwnd, nBar, FALSE, FALSE );
1015 else
1016 {
1017 if( action & SA_SSI_SHOW )
1018 if( SCROLL_ShowScrollBar( hwnd, nBar, TRUE, TRUE ) )
1019 return retVal; /* SetWindowPos() already did the painting */
1020
1021 if( bRedraw && (action & SA_SSI_REFRESH))
1022 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1023 else if( action & SA_SSI_REPAINT_ARROWS )
1024 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, FALSE );
1025 }
1026 return retVal;
1027 }
1028
1029 INT32 SCROLL_SetScrollInfo( HWND32 hwnd, INT32 nBar,
1030 const SCROLLINFO *info, INT32 *action )
1031 {
1032 /* Update the scrollbar state and set action flags according to
1033 * what has to be done graphics wise. */
1034
1035 SCROLLBAR_INFO *infoPtr;
1036 UINT32 new_flags;
1037
1038 dbg_decl_str(scroll, 256);
1039
1040 *action = 0;
1041
1042 if (!(infoPtr = SCROLL_GetScrollInfo(hwnd, nBar))) return 0;
1043 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
1044 if ((info->cbSize != sizeof(*info)) &&
1045 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
1046
1047 /* Set the page size */
1048
1049 if (info->fMask & SIF_PAGE)
1050 {
1051 dsprintf(scroll, " page=%d", info->nPage );
1052 if( infoPtr->Page != info->nPage )
1053 {
1054 infoPtr->Page = info->nPage;
1055 *action |= SA_SSI_REFRESH;
1056 }
1057 }
1058
1059 /* Set the scroll pos */
1060
1061 if (info->fMask & SIF_POS)
1062 {
1063 dsprintf(scroll, " pos=%d", info->nPos );
1064 if( infoPtr->CurVal != info->nPos )
1065 {
1066 infoPtr->CurVal = info->nPos;
1067 *action |= SA_SSI_REFRESH;
1068 }
1069 }
1070
1071 /* Set the scroll range */
1072
1073 if (info->fMask & SIF_RANGE)
1074 {
1075 dsprintf(scroll, " min=%d max=%d", info->nMin, info->nMax );
1076
1077 /* Invalid range -> range is set to (0,0) */
1078 if ((info->nMin > info->nMax) ||
1079 ((UINT32)(info->nMax - info->nMin) >= 0x80000000))
1080 {
1081 infoPtr->MinVal = 0;
1082 infoPtr->MaxVal = 0;
1083 }
1084 else
1085 {
1086 if( infoPtr->MinVal != info->nMin ||
1087 infoPtr->MaxVal != info->nMax )
1088 {
1089 *action |= SA_SSI_REFRESH;
1090 infoPtr->MinVal = info->nMin;
1091 infoPtr->MaxVal = info->nMax;
1092 }
1093 }
1094 }
1095
1096 TRACE(scroll, "hwnd=%04x bar=%d %s\n",
1097 hwnd, nBar, dbg_str(scroll));
1098
1099 /* Make sure the page size is valid */
1100
1101 if (infoPtr->Page < 0) infoPtr->Page = 0;
1102 else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
1103 infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
1104
1105 /* Make sure the pos is inside the range */
1106
1107 if (infoPtr->CurVal < infoPtr->MinVal)
1108 infoPtr->CurVal = infoPtr->MinVal;
1109 else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1110 infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
1111
1112 TRACE(scroll, " new values: page=%d pos=%d min=%d max=%d\n",
1113 infoPtr->Page, infoPtr->CurVal,
1114 infoPtr->MinVal, infoPtr->MaxVal );
1115
1116 /* Check if the scrollbar should be hidden or disabled */
1117
1118 if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
1119 {
1120 new_flags = infoPtr->flags;
1121 if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1122 {
1123 /* Hide or disable scroll-bar */
1124 if (info->fMask & SIF_DISABLENOSCROLL)
1125 {
1126 new_flags = ESB_DISABLE_BOTH;
1127 *action |= SA_SSI_REFRESH;
1128 }
1129 else if (nBar != SB_CTL)
1130 {
1131 *action = SA_SSI_HIDE;
1132 goto done;
1133 }
1134 }
1135 else /* Show and enable scroll-bar */
1136 {
1137 new_flags = 0;
1138 if (nBar != SB_CTL)
1139 *action |= SA_SSI_SHOW;
1140 }
1141
1142 if (infoPtr->flags != new_flags) /* check arrow flags */
1143 {
1144 infoPtr->flags = new_flags;
1145 *action |= SA_SSI_REPAINT_ARROWS;
1146 }
1147 }
1148
1149 done:
1150 /* Return current position */
1151
1152 return infoPtr->CurVal;
1153 }
1154
1155
1156 /*************************************************************************
1157 * GetScrollInfo16 (USER.476)
1158 */
1159 BOOL16 WINAPI GetScrollInfo16( HWND16 hwnd, INT16 nBar, LPSCROLLINFO info )
1160 {
1161 return GetScrollInfo32( hwnd, nBar, info );
1162 }
1163
1164
1165 /*************************************************************************
1166 * GetScrollInfo32 (USER32.284)
1167 * GetScrollInfo32 can be used to retrieve the position, upper bound,
1168 * lower bound, and page size of a scrollbar control.
1169 *
1170 * RETURNS STD
1171 */
1172 BOOL32 WINAPI GetScrollInfo32(
1173 HWND32 hwnd /* [I] Handle of window */ ,
1174 INT32 nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1175 LPSCROLLINFO info /* [IO] (info.fMask [I] specifies which values are to retrieve) */)
1176 {
1177 SCROLLBAR_INFO *infoPtr;
1178
1179 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1180 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
1181 if ((info->cbSize != sizeof(*info)) &&
1182 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
1183
1184 if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
1185 if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
1186 if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
1187 info->nTrackPos = (SCROLL_TrackingWin==hwnd) ? SCROLL_TrackingVal : 0;
1188 if (info->fMask & SIF_RANGE)
1189 {
1190 info->nMin = infoPtr->MinVal;
1191 info->nMax = infoPtr->MaxVal;
1192 }
1193 return (info->fMask & SIF_ALL) != 0;
1194 }
1195
1196
1197 /*************************************************************************
1198 * SetScrollPos16 (USER.62)
1199 */
1200 INT16 WINAPI SetScrollPos16( HWND16 hwnd, INT16 nBar, INT16 nPos,
1201 BOOL16 bRedraw )
1202 {
1203 return (INT16)SetScrollPos32( hwnd, nBar, nPos, bRedraw );
1204 }
1205
1206
1207 /*************************************************************************
1208 * SetScrollPos32 (USER32.502)
1209 *
1210 * RETURNS
1211 * Success: Scrollbar position
1212 * Failure: 0
1213 *
1214 * REMARKS
1215 * Note the ambiguity when 0 is returned. Use GetLastError
1216 * to make sure there was an error (and to know which one).
1217 */
1218 INT32 WINAPI SetScrollPos32(
1219 HWND32 hwnd /* [I] Handle of window whose scrollbar will be affected */,
1220 INT32 nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1221 INT32 nPos /* [I] New value */,
1222 BOOL32 bRedraw /* [I] Should scrollbar be redrawn afterwards ? */ )
1223 {
1224 SCROLLINFO info;
1225 SCROLLBAR_INFO *infoPtr;
1226 INT32 oldPos;
1227
1228 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1229 oldPos = infoPtr->CurVal;
1230 info.cbSize = sizeof(info);
1231 info.nPos = nPos;
1232 info.fMask = SIF_POS;
1233 SetScrollInfo32( hwnd, nBar, &info, bRedraw );
1234 return oldPos;
1235 }
1236
1237
1238 /*************************************************************************
1239 * GetScrollPos16 (USER.63)
1240 */
1241 INT16 WINAPI GetScrollPos16( HWND16 hwnd, INT16 nBar )
1242 {
1243 return (INT16)GetScrollPos32( hwnd, nBar );
1244 }
1245
1246
1247 /*************************************************************************
1248 * GetScrollPos32 (USER32.285)
1249 *
1250 * RETURNS
1251 * Success: Current position
1252 * Failure: 0
1253 *
1254 * REMARKS
1255 * Note the ambiguity when 0 is returned. Use GetLastError
1256 * to make sure there was an error (and to know which one).
1257 */
1258 INT32 WINAPI GetScrollPos32(
1259 HWND32 hwnd, /* [I] Handle of window */
1260 INT32 nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
1261 {
1262 SCROLLBAR_INFO *infoPtr;
1263
1264 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1265 return infoPtr->CurVal;
1266 }
1267
1268
1269 /*************************************************************************
1270 * SetScrollRange16 (USER.64)
1271 */
1272 void WINAPI SetScrollRange16( HWND16 hwnd, INT16 nBar,
1273 INT16 MinVal, INT16 MaxVal, BOOL16 bRedraw )
1274 {
1275 /* Invalid range -> range is set to (0,0) */
1276 if ((INT32)MaxVal - (INT32)MinVal > 0x7fff) MinVal = MaxVal = 0;
1277 SetScrollRange32( hwnd, nBar, MinVal, MaxVal, bRedraw );
1278 }
1279
1280
1281 /*************************************************************************
1282 * SetScrollRange32 (USER32.503)
1283 *
1284 * RETURNS STD
1285 */
1286 BOOL32 WINAPI SetScrollRange32(
1287 HWND32 hwnd, /* [I] Handle of window whose scrollbar will be affected */
1288 INT32 nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1289 INT32 MinVal, /* [I] New minimum value */
1290 INT32 MaxVal, /* [I] New maximum value */
1291 BOOL32 bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1292 {
1293 SCROLLINFO info;
1294
1295 info.cbSize = sizeof(info);
1296 info.nMin = MinVal;
1297 info.nMax = MaxVal;
1298 info.fMask = SIF_RANGE;
1299 SetScrollInfo32( hwnd, nBar, &info, bRedraw );
1300 return TRUE;
1301 }
1302
1303
1304 /*************************************************************************
1305 * SCROLL_SetNCSbState
1306 *
1307 * Updates both scrollbars at the same time. Used by MDI CalcChildScroll().
1308 */
1309 INT32 SCROLL_SetNCSbState(WND* wndPtr, int vMin, int vMax, int vPos,
1310 int hMin, int hMax, int hPos)
1311 {
1312 INT32 vA, hA;
1313 SCROLLINFO vInfo, hInfo;
1314
1315 vInfo.cbSize = hInfo.cbSize = sizeof(SCROLLINFO);
1316 vInfo.nMin = vMin; hInfo.nMin = hMin;
1317 vInfo.nMax = vMax; hInfo.nMax = hMax;
1318 vInfo.nPos = vPos; hInfo.nPos = hPos;
1319 vInfo.fMask = hInfo.fMask = SIF_RANGE | SIF_POS;
1320
1321 SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_VERT, &vInfo, &vA );
1322 SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_HORZ, &hInfo, &hA );
1323
1324 if( !SCROLL_ShowScrollBar( wndPtr->hwndSelf, SB_BOTH,
1325 (hA & SA_SSI_SHOW),(vA & SA_SSI_SHOW) ) )
1326 {
1327 /* SetWindowPos() wasn't called, just redraw the scrollbars if needed */
1328 if( vA & SA_SSI_REFRESH )
1329 SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_VERT, FALSE, TRUE );
1330
1331 if( hA & SA_SSI_REFRESH )
1332 SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_HORZ, FALSE, TRUE );
1333 }
1334 return 0;
1335 }
1336
1337
1338 /*************************************************************************
1339 * GetScrollRange16 (USER.65)
1340 */
1341 BOOL16 WINAPI GetScrollRange16( HWND16 hwnd, INT16 nBar,
1342 LPINT16 lpMin, LPINT16 lpMax)
1343 {
1344 INT32 min, max;
1345 BOOL16 ret = GetScrollRange32( hwnd, nBar, &min, &max );
1346 if (lpMin) *lpMin = min;
1347 if (lpMax) *lpMax = max;
1348 return ret;
1349 }
1350
1351
1352 /*************************************************************************
1353 * GetScrollRange32 (USER32.286)
1354 *
1355 * RETURNS STD
1356 */
1357 BOOL32 WINAPI GetScrollRange32(
1358 HWND32 hwnd, /* [I] Handle of window */
1359 INT32 nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1360 LPINT32 lpMin, /* [O] Where to store minimum value */
1361 LPINT32 lpMax /* [O] Where to store maximum value */)
1362 {
1363 SCROLLBAR_INFO *infoPtr;
1364
1365 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar )))
1366 {
1367 if (lpMin) lpMin = 0;
1368 if (lpMax) lpMax = 0;
1369 return FALSE;
1370 }
1371 if (lpMin) *lpMin = infoPtr->MinVal;
1372 if (lpMax) *lpMax = infoPtr->MaxVal;
1373 return TRUE;
1374 }
1375
1376
1377 /*************************************************************************
1378 * SCROLL_ShowScrollBar()
1379 *
1380 * Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
1381 * NOTE: fShowV/fShowH must be zero when nBar is SB_HORZ/SB_VERT.
1382 */
1383 BOOL32 SCROLL_ShowScrollBar( HWND32 hwnd, INT32 nBar,
1384 BOOL32 fShowH, BOOL32 fShowV )
1385 {
1386 WND *wndPtr = WIN_FindWndPtr( hwnd );
1387
1388 if (!wndPtr) return FALSE;
1389 TRACE(scroll, "hwnd=%04x bar=%d horz=%d, vert=%d\n",
1390 hwnd, nBar, fShowH, fShowV );
1391
1392 switch(nBar)
1393 {
1394 case SB_CTL:
1395 ShowWindow32( hwnd, fShowH ? SW_SHOW : SW_HIDE );
1396 return TRUE;
1397
1398 case SB_BOTH:
1399 case SB_HORZ:
1400 if (fShowH)
1401 {
1402 fShowH = !(wndPtr->dwStyle & WS_HSCROLL);
1403 wndPtr->dwStyle |= WS_HSCROLL;
1404 }
1405 else /* hide it */
1406 {
1407 fShowH = (wndPtr->dwStyle & WS_HSCROLL);
1408 wndPtr->dwStyle &= ~WS_HSCROLL;
1409 }
1410 if( nBar == SB_HORZ ) break;
1411 /* fall through */
1412
1413 case SB_VERT:
1414 if (fShowV)
1415 {
1416 fShowV = !(wndPtr->dwStyle & WS_VSCROLL);
1417 wndPtr->dwStyle |= WS_VSCROLL;
1418 }
1419 else /* hide it */
1420 {
1421 fShowV = (wndPtr->dwStyle & WS_VSCROLL);
1422 wndPtr->dwStyle &= ~WS_VSCROLL;
1423 }
1424 break;
1425
1426 default:
1427 return FALSE; /* Nothing to do! */
1428 }
1429
1430 if( fShowH || fShowV ) /* frame has been changed, let the window redraw itself */
1431 {
1432 SetWindowPos32( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
1433 | SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
1434 return TRUE;
1435 }
1436
1437 return FALSE; /* no frame changes */
1438 }
1439
1440
1441 /*************************************************************************
1442 * ShowScrollBar16 (USER.267)
1443 */
1444 void WINAPI ShowScrollBar16( HWND16 hwnd, INT16 nBar, BOOL16 fShow )
1445 {
1446 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1447 (nBar == SB_HORZ) ? 0 : fShow );
1448 }
1449
1450
1451 /*************************************************************************
1452 * ShowScrollBar32 (USER32.532)
1453 *
1454 * RETURNS STD
1455 */
1456 BOOL32 WINAPI ShowScrollBar32(
1457 HWND32 hwnd, /* [I] Handle of window whose scrollbar(s) will be affected */
1458 INT32 nBar, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1459 BOOL32 fShow /* [I] TRUE = show, FALSE = hide */)
1460 {
1461 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1462 (nBar == SB_HORZ) ? 0 : fShow );
1463 return TRUE;
1464 }
1465
1466
1467 /*************************************************************************
1468 * EnableScrollBar16 (USER.482)
1469 */
1470 BOOL16 WINAPI EnableScrollBar16( HWND16 hwnd, INT16 nBar, UINT16 flags )
1471 {
1472 return EnableScrollBar32( hwnd, nBar, flags );
1473 }
1474
1475
1476 /*************************************************************************
1477 * EnableScrollBar32 (USER32.171)
1478 */
1479 BOOL32 WINAPI EnableScrollBar32( HWND32 hwnd, INT32 nBar, UINT32 flags )
1480 {
1481 BOOL32 bFineWithMe;
1482 SCROLLBAR_INFO *infoPtr;
1483
1484 TRACE(scroll, "%04x %d %d\n", hwnd, nBar, flags );
1485
1486 flags &= ESB_DISABLE_BOTH;
1487
1488 if (nBar == SB_BOTH)
1489 {
1490 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, SB_VERT ))) return FALSE;
1491 if (!(bFineWithMe = (infoPtr->flags == flags)) )
1492 {
1493 infoPtr->flags = flags;
1494 SCROLL_RefreshScrollBar( hwnd, SB_VERT, TRUE, TRUE );
1495 }
1496 nBar = SB_HORZ;
1497 }
1498 else
1499 bFineWithMe = TRUE;
1500
1501 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1502 if (bFineWithMe && infoPtr->flags == flags) return FALSE;
1503 infoPtr->flags = flags;
1504
1505 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1506 return TRUE;
1507 }
Quick hack tree for wine patches julliard doesn't want to commit