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Fixed an error and an off-by-one bug in DSA_SetItem(). This
[wine/dcerpc.git] / controls / scroll.c
blob5e7aa7532eafe65aaa04f08824de16c6c0b8a902
1 /*
2 * Scrollbar control
3 *
4 * Copyright 1993 Martin Ayotte
5 * Copyright 1994, 1996 Alexandre Julliard
6 */
7
8 #include "wine/winuser16.h"
9 #include "scroll.h"
10 #include "heap.h"
11 #include "win.h"
12 #include "debugtools.h"
13 #include "tweak.h"
14
15 DEFAULT_DEBUG_CHANNEL(scroll)
16
17
18 static HBITMAP hUpArrow = 0;
19 static HBITMAP hDnArrow = 0;
20 static HBITMAP hLfArrow = 0;
21 static HBITMAP hRgArrow = 0;
22 static HBITMAP hUpArrowD = 0;
23 static HBITMAP hDnArrowD = 0;
24 static HBITMAP hLfArrowD = 0;
25 static HBITMAP hRgArrowD = 0;
26 static HBITMAP hUpArrowI = 0;
27 static HBITMAP hDnArrowI = 0;
28 static HBITMAP hLfArrowI = 0;
29 static HBITMAP hRgArrowI = 0;
30
31 #define TOP_ARROW(flags,pressed) \
32 (((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow))
33 #define BOTTOM_ARROW(flags,pressed) \
34 (((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow))
35 #define LEFT_ARROW(flags,pressed) \
36 (((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow))
37 #define RIGHT_ARROW(flags,pressed) \
38 (((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow))
39
40
41 /* Minimum size of the rectangle between the arrows */
42 #define SCROLL_MIN_RECT 4
43
44 /* Minimum size of the thumb in pixels */
45 #define SCROLL_MIN_THUMB 6
46
47 /* Overlap between arrows and thumb */
48 #define SCROLL_ARROW_THUMB_OVERLAP 1
49
50 /* Delay (in ms) before first repetition when holding the button down */
51 #define SCROLL_FIRST_DELAY 200
52
53 /* Delay (in ms) between scroll repetitions */
54 #define SCROLL_REPEAT_DELAY 50
55
56 /* Scroll timer id */
57 #define SCROLL_TIMER 0
58
59 /* Scroll-bar hit testing */
60 enum SCROLL_HITTEST
61 {
62 SCROLL_NOWHERE, /* Outside the scroll bar */
63 SCROLL_TOP_ARROW, /* Top or left arrow */
64 SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
65 SCROLL_THUMB, /* Thumb rectangle */
66 SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
67 SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
68 };
69
70 /* What to do after SCROLL_SetScrollInfo() */
71 #define SA_SSI_HIDE 0x0001
72 #define SA_SSI_SHOW 0x0002
73 #define SA_SSI_REFRESH 0x0004
74 #define SA_SSI_REPAINT_ARROWS 0x0008
75
76 /* Thumb-tracking info */
77 static HWND SCROLL_TrackingWin = 0;
78 static INT SCROLL_TrackingBar = 0;
79 static INT SCROLL_TrackingPos = 0;
80 static INT SCROLL_TrackingVal = 0;
81 /* Hit test code of the last button-down event */
82 static enum SCROLL_HITTEST SCROLL_trackHitTest;
83 static BOOL SCROLL_trackVertical;
84
85 /* Is the moving thumb being displayed? */
86 static BOOL SCROLL_MovingThumb = FALSE;
87
88 /* Local functions */
89 static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
90 BOOL fShowH, BOOL fShowV );
91 static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
92 const SCROLLINFO *info, INT *action );
93
94 /***********************************************************************
95 * SCROLL_LoadBitmaps
96 */
97 static void SCROLL_LoadBitmaps(void)
98 {
99 hUpArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROW) );
100 hDnArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROW) );
101 hLfArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROW) );
102 hRgArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROW) );
103 hUpArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWD) );
104 hDnArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWD) );
105 hLfArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWD) );
106 hRgArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWD) );
107 hUpArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWI) );
108 hDnArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWI) );
109 hLfArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWI) );
110 hRgArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWI) );
111 }
112
113
114 /***********************************************************************
115 * SCROLL_GetPtrScrollInfo
116 */
117 static SCROLLBAR_INFO *SCROLL_GetPtrScrollInfo( WND* wndPtr, INT nBar )
118 {
119 SCROLLBAR_INFO *infoPtr;
120
121 if (!wndPtr) return NULL;
122 switch(nBar)
123 {
124 case SB_HORZ: infoPtr = (SCROLLBAR_INFO *)wndPtr->pHScroll; break;
125 case SB_VERT: infoPtr = (SCROLLBAR_INFO *)wndPtr->pVScroll; break;
126 case SB_CTL: infoPtr = (SCROLLBAR_INFO *)wndPtr->wExtra; break;
127 default: return NULL;
128 }
129
130 if (!infoPtr) /* Create the info structure if needed */
131 {
132 if ((infoPtr = HeapAlloc( SystemHeap, 0, sizeof(SCROLLBAR_INFO) )))
133 {
134 infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
135 infoPtr->MaxVal = 100;
136 infoPtr->flags = ESB_ENABLE_BOTH;
137 if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr;
138 else wndPtr->pVScroll = infoPtr;
139 }
140 if (!hUpArrow) SCROLL_LoadBitmaps();
141 }
142 return infoPtr;
143 }
144
145
146 /***********************************************************************
147 * SCROLL_GetScrollInfo
148 */
149 static SCROLLBAR_INFO *SCROLL_GetScrollInfo( HWND hwnd, INT nBar )
150 {
151 SCROLLBAR_INFO *retvalue;
152 WND *wndPtr = WIN_FindWndPtr( hwnd );
153 retvalue = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
154 WIN_ReleaseWndPtr(wndPtr);
155 return retvalue;
156 }
157
158
159 /***********************************************************************
160 * SCROLL_GetScrollBarRect
161 *
162 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
163 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
164 * 'arrowSize' returns the width or height of an arrow (depending on
165 * the orientation of the scrollbar), 'thumbSize' returns the size of
166 * the thumb, and 'thumbPos' returns the position of the thumb
167 * relative to the left or to the top.
168 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
169 */
170 static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
171 INT *arrowSize, INT *thumbSize,
172 INT *thumbPos )
173 {
174 INT pixels;
175 BOOL vertical;
176 WND *wndPtr = WIN_FindWndPtr( hwnd );
177
178 switch(nBar)
179 {
180 case SB_HORZ:
181 lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left;
182 lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
183 lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left;
184 lprect->bottom = lprect->top + GetSystemMetrics(SM_CYHSCROLL);
185 if(wndPtr->dwStyle & WS_BORDER) {
186 lprect->left--;
187 lprect->right++;
188 } else if(wndPtr->dwStyle & WS_VSCROLL)
189 lprect->right++;
190 vertical = FALSE;
191 break;
192
193 case SB_VERT:
194 lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
195 lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top;
196 lprect->right = lprect->left + GetSystemMetrics(SM_CXVSCROLL);
197 lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
198 if(wndPtr->dwStyle & WS_BORDER) {
199 lprect->top--;
200 lprect->bottom++;
201 } else if(wndPtr->dwStyle & WS_HSCROLL)
202 lprect->bottom++;
203 vertical = TRUE;
204 break;
205
206 case SB_CTL:
207 GetClientRect( hwnd, lprect );
208 vertical = ((wndPtr->dwStyle & SBS_VERT) != 0);
209 break;
210
211 default:
212 WIN_ReleaseWndPtr(wndPtr);
213 return FALSE;
214 }
215
216 if (vertical) pixels = lprect->bottom - lprect->top;
217 else pixels = lprect->right - lprect->left;
218
219 if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
220 {
221 if (pixels > SCROLL_MIN_RECT)
222 *arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
223 else
224 *arrowSize = 0;
225 *thumbPos = *thumbSize = 0;
226 }
227 else
228 {
229 SCROLLBAR_INFO *info = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
230
231 *arrowSize = GetSystemMetrics(SM_CXVSCROLL);
232 pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
233
234 if (info->Page)
235 {
236 *thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
237 if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
238 }
239 else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
240
241 if (((pixels -= *thumbSize ) < 0) ||
242 ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
243 {
244 /* Rectangle too small or scrollbar disabled -> no thumb */
245 *thumbPos = *thumbSize = 0;
246 }
247 else
248 {
249 INT max = info->MaxVal - MAX( info->Page-1, 0 );
250 if (info->MinVal >= max)
251 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
252 else
253 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
254 + pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
255 }
256 }
257 WIN_ReleaseWndPtr(wndPtr);
258 return vertical;
259 }
260
261
262 /***********************************************************************
263 * SCROLL_GetThumbVal
264 *
265 * Compute the current scroll position based on the thumb position in pixels
266 * from the top of the scroll-bar.
267 */
268 static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
269 BOOL vertical, INT pos )
270 {
271 INT thumbSize;
272 INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
273
274 if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
275 return infoPtr->MinVal;
276
277 if (infoPtr->Page)
278 {
279 thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
280 if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
281 }
282 else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
283
284 if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
285
286 pos = MAX( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) );
287 if (pos > pixels) pos = pixels;
288
289 if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
290 else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
291 return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
292 }
293
294 /***********************************************************************
295 * SCROLL_PtInRectEx
296 */
297 static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
298 {
299 RECT rect = *lpRect;
300
301 if (vertical)
302 {
303 rect.left -= lpRect->right - lpRect->left;
304 rect.right += lpRect->right - lpRect->left;
305 }
306 else
307 {
308 rect.top -= lpRect->bottom - lpRect->top;
309 rect.bottom += lpRect->bottom - lpRect->top;
310 }
311 return PtInRect( &rect, pt );
312 }
313
314 /***********************************************************************
315 * SCROLL_ClipPos
316 */
317 static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
318 {
319 if( pt.x < lpRect->left )
320 pt.x = lpRect->left;
321 else
322 if( pt.x > lpRect->right )
323 pt.x = lpRect->right;
324
325 if( pt.y < lpRect->top )
326 pt.y = lpRect->top;
327 else
328 if( pt.y > lpRect->bottom )
329 pt.y = lpRect->bottom;
330
331 return pt;
332 }
333
334
335 /***********************************************************************
336 * SCROLL_HitTest
337 *
338 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
339 */
340 static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
341 POINT pt, BOOL bDragging )
342 {
343 INT arrowSize, thumbSize, thumbPos;
344 RECT rect;
345
346 BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
347 &arrowSize, &thumbSize, &thumbPos );
348
349 if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
350 (!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
351
352 if (vertical)
353 {
354 if (pt.y < rect.top + arrowSize) return SCROLL_TOP_ARROW;
355 if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW;
356 if (!thumbPos) return SCROLL_TOP_RECT;
357 pt.y -= rect.top;
358 if (pt.y < thumbPos) return SCROLL_TOP_RECT;
359 if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
360 }
361 else /* horizontal */
362 {
363 if (pt.x < rect.left + arrowSize) return SCROLL_TOP_ARROW;
364 if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW;
365 if (!thumbPos) return SCROLL_TOP_RECT;
366 pt.x -= rect.left;
367 if (pt.x < thumbPos) return SCROLL_TOP_RECT;
368 if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
369 }
370 return SCROLL_THUMB;
371 }
372
373
374 /***********************************************************************
375 * SCROLL_DrawArrows
376 *
377 * Draw the scroll bar arrows.
378 */
379 static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
380 RECT *rect, INT arrowSize, BOOL vertical,
381 BOOL top_pressed, BOOL bottom_pressed )
382 {
383 HDC hdcMem = CreateCompatibleDC( hdc );
384 HBITMAP hbmpPrev = SelectObject( hdcMem, vertical ?
385 TOP_ARROW(infoPtr->flags, top_pressed)
386 : LEFT_ARROW(infoPtr->flags, top_pressed));
387 INT offset = (TWEAK_WineLook > WIN31_LOOK) ? 1 : 0;
388
389 if (offset) arrowSize--;
390 SetStretchBltMode( hdc, STRETCH_DELETESCANS );
391 StretchBlt( hdc, rect->left+offset, rect->top+offset,
392 vertical ? rect->right-(rect->left+offset) : arrowSize,
393 vertical ? arrowSize : rect->bottom-(rect->top+offset),
394 hdcMem, 0, 0,
395 GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
396 SRCCOPY );
397
398 SelectObject( hdcMem, vertical ?
399 BOTTOM_ARROW( infoPtr->flags, bottom_pressed )
400 : RIGHT_ARROW( infoPtr->flags, bottom_pressed ) );
401 if (vertical)
402 StretchBlt( hdc, (rect->left+offset), rect->bottom - arrowSize,
403 rect->right - (rect->left+offset), arrowSize,
404 hdcMem, 0, 0,
405 GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
406 SRCCOPY );
407 else
408 StretchBlt( hdc, rect->right - arrowSize, rect->top+offset,
409 arrowSize, rect->bottom - (rect->top+offset),
410 hdcMem, 0, 0,
411 GetSystemMetrics(SM_CXVSCROLL), GetSystemMetrics(SM_CYHSCROLL),
412 SRCCOPY );
413 SelectObject( hdcMem, hbmpPrev );
414 DeleteDC( hdcMem );
415 }
416
417
418 /***********************************************************************
419 * SCROLL_DrawMovingThumb
420 *
421 * Draw the moving thumb rectangle.
422 */
423 static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
424 INT arrowSize, INT thumbSize )
425 {
426 RECT r = *rect;
427 if (vertical)
428 {
429 r.top += SCROLL_TrackingPos;
430 if (r.top < rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
431 r.top = rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
432 if (r.top + thumbSize >
433 rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
434 r.top = rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
435 - thumbSize;
436 r.bottom = r.top + thumbSize;
437 }
438 else
439 {
440 r.left += SCROLL_TrackingPos;
441 if (r.left < rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
442 r.left = rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
443 if (r.left + thumbSize >
444 rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
445 r.left = rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
446 - thumbSize;
447 r.right = r.left + thumbSize;
448 }
449 DrawFocusRect( hdc, &r );
450 SCROLL_MovingThumb = !SCROLL_MovingThumb;
451 }
452
453
454 /***********************************************************************
455 * SCROLL_DrawInterior
456 *
457 * Draw the scroll bar interior (everything except the arrows).
458 */
459 static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
460 RECT *rect, INT arrowSize,
461 INT thumbSize, INT thumbPos,
462 UINT flags, BOOL vertical,
463 BOOL top_selected, BOOL bottom_selected )
464 {
465 RECT r;
466 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
467
468 if (Save_SCROLL_MovingThumb &&
469 (SCROLL_TrackingWin == hwnd) &&
470 (SCROLL_TrackingBar == nBar))
471 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
472
473 /* Select the correct brush and pen */
474
475 SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
476 if ((flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)
477 {
478 /* This ought to be the color of the parent window */
479 SelectObject( hdc, GetSysColorBrush(COLOR_WINDOW) );
480 }
481 else
482 {
483 if (nBar == SB_CTL) /* Only scrollbar controls send WM_CTLCOLOR */
484 {
485 HBRUSH hbrush = SendMessageA(GetParent(hwnd),
486 WM_CTLCOLORSCROLLBAR, hdc, hwnd );
487 SelectObject( hdc, hbrush );
488 }
489 else SelectObject( hdc, GetSysColorBrush(COLOR_SCROLLBAR) );
490 }
491
492 /* Calculate the scroll rectangle */
493
494 r = *rect;
495 if (vertical)
496 {
497 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
498 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
499 }
500 else
501 {
502 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
503 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
504 }
505
506 /* Draw the scroll bar frame */
507
508 /* Only draw outline if Win 3.1. Mar 24, 1999 - Ronald B. Cemer */
509 if (TWEAK_WineLook == WIN31_LOOK)
510 Rectangle( hdc, r.left, r.top, r.right, r.bottom );
511
512 /* Draw the scroll rectangles and thumb */
513
514 if (!thumbPos) /* No thumb to draw */
515 {
516 PatBlt( hdc, r.left+1, r.top+1, r.right - r.left - 2,
517 r.bottom - r.top - 2, PATCOPY );
518 return;
519 }
520
521 if (vertical)
522 {
523 PatBlt( hdc, r.left + 1, r.top + 1,
524 r.right - r.left - 2,
525 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - 1,
526 top_selected ? 0x0f0000 : PATCOPY );
527 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
528 PatBlt( hdc, r.left + 1, r.top + thumbSize,
529 r.right - r.left - 2,
530 r.bottom - r.top - thumbSize - 1,
531 bottom_selected ? 0x0f0000 : PATCOPY );
532 r.bottom = r.top + thumbSize;
533 }
534 else /* horizontal */
535 {
536 PatBlt( hdc, r.left + 1, r.top + 1,
537 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - 1,
538 r.bottom - r.top - 2,
539 top_selected ? 0x0f0000 : PATCOPY );
540 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
541 PatBlt( hdc, r.left + thumbSize, r.top + 1,
542 r.right - r.left - thumbSize - 1,
543 r.bottom - r.top - 2,
544 bottom_selected ? 0x0f0000 : PATCOPY );
545 r.right = r.left + thumbSize;
546 }
547
548 /* Draw the thumb */
549
550 SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) );
551 if (TWEAK_WineLook == WIN31_LOOK)
552 {
553 Rectangle( hdc, r.left, r.top, r.right, r.bottom );
554 r.top++, r.left++;
555 }
556 else
557 {
558 r.top++, r.left++;
559 r.bottom--; r.right--;
560 Rectangle( hdc, r.left, r.top, r.right-1, r.bottom-1 );
561 }
562 DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT );
563
564 if (Save_SCROLL_MovingThumb &&
565 (SCROLL_TrackingWin == hwnd) &&
566 (SCROLL_TrackingBar == nBar))
567 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
568 }
569
570
571 /***********************************************************************
572 * SCROLL_DrawScrollBar
573 *
574 * Redraw the whole scrollbar.
575 */
576 void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
577 BOOL arrows, BOOL interior )
578 {
579 INT arrowSize, thumbSize, thumbPos;
580 RECT rect;
581 BOOL vertical;
582 WND *wndPtr = WIN_FindWndPtr( hwnd );
583 SCROLLBAR_INFO *infoPtr = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
584 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
585
586 if (!wndPtr || !infoPtr ||
587 ((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) ||
588 ((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) goto END;
589 if (!WIN_IsWindowDrawable( wndPtr, FALSE )) goto END;
590
591 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
592 &arrowSize, &thumbSize, &thumbPos );
593
594 if (Save_SCROLL_MovingThumb &&
595 (SCROLL_TrackingWin == hwnd) &&
596 (SCROLL_TrackingBar == nBar))
597 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
598
599 /* Draw the arrows */
600
601 if (arrows && arrowSize)
602 {
603 if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
604 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
605 (SCROLL_trackHitTest == SCROLL_TOP_ARROW),
606 (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
607 else
608 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
609 FALSE, FALSE );
610 }
611 if( interior )
612 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
613 thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
614
615 if (Save_SCROLL_MovingThumb &&
616 (SCROLL_TrackingWin == hwnd) &&
617 (SCROLL_TrackingBar == nBar))
618 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
619
620 END:
621 WIN_ReleaseWndPtr(wndPtr);
622 }
623
624
625 /***********************************************************************
626 * SCROLL_RefreshScrollBar
627 *
628 * Repaint the scroll bar interior after a SetScrollRange() or
629 * SetScrollPos() call.
630 */
631 static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
632 BOOL arrows, BOOL interior )
633 {
634 HDC hdc = GetDCEx( hwnd, 0,
635 DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
636 if (!hdc) return;
637
638 SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
639 ReleaseDC( hwnd, hdc );
640 }
641
642
643 /***********************************************************************
644 * SCROLL_HandleKbdEvent
645 *
646 * Handle a keyboard event (only for SB_CTL scrollbars).
647 */
648 static void SCROLL_HandleKbdEvent( HWND hwnd, WPARAM wParam )
649 {
650 WND *wndPtr = WIN_FindWndPtr( hwnd );
651 WPARAM msg;
652
653 switch(wParam)
654 {
655 case VK_PRIOR: msg = SB_PAGEUP; break;
656 case VK_NEXT: msg = SB_PAGEDOWN; break;
657 case VK_HOME: msg = SB_TOP; break;
658 case VK_END: msg = SB_BOTTOM; break;
659 case VK_UP: msg = SB_LINEUP; break;
660 case VK_DOWN: msg = SB_LINEDOWN; break;
661 default:
662 WIN_ReleaseWndPtr(wndPtr);
663 return;
664 }
665 SendMessageA( GetParent(hwnd),
666 (wndPtr->dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
667 msg, hwnd );
668 WIN_ReleaseWndPtr(wndPtr);
669 }
670
671
672 /***********************************************************************
673 * SCROLL_HandleScrollEvent
674 *
675 * Handle a mouse or timer event for the scrollbar.
676 * 'pt' is the location of the mouse event in client (for SB_CTL) or
677 * windows coordinates.
678 */
679 void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt)
680 {
681 /* Previous mouse position for timer events */
682 static POINT prevPt;
683 /* Thumb position when tracking started. */
684 static UINT trackThumbPos;
685 /* Position in the scroll-bar of the last button-down event. */
686 static INT lastClickPos;
687 /* Position in the scroll-bar of the last mouse event. */
688 static INT lastMousePos;
689
690 enum SCROLL_HITTEST hittest;
691 HWND hwndOwner, hwndCtl;
692 BOOL vertical;
693 INT arrowSize, thumbSize, thumbPos;
694 RECT rect;
695 HDC hdc;
696
697 SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar );
698 if (!infoPtr) return;
699 if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN))
700 return;
701
702 hdc = GetDCEx( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
703 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
704 &arrowSize, &thumbSize, &thumbPos );
705 hwndOwner = (nBar == SB_CTL) ? GetParent(hwnd) : hwnd;
706 hwndCtl = (nBar == SB_CTL) ? hwnd : 0;
707
708 switch(msg)
709 {
710 case WM_LBUTTONDOWN: /* Initialise mouse tracking */
711 SCROLL_trackVertical = vertical;
712 SCROLL_trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
713 lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
714 lastMousePos = lastClickPos;
715 trackThumbPos = thumbPos;
716 prevPt = pt;
717 SetCapture( hwnd );
718 if (nBar == SB_CTL) SetFocus( hwnd );
719 break;
720
721 case WM_MOUSEMOVE:
722 hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE );
723 prevPt = pt;
724 break;
725
726 case WM_LBUTTONUP:
727 hittest = SCROLL_NOWHERE;
728 ReleaseCapture();
729 break;
730
731 case WM_SYSTIMER:
732 pt = prevPt;
733 hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
734 break;
735
736 default:
737 return; /* Should never happen */
738 }
739
740 TRACE("Event: hwnd=%04x bar=%d msg=%x pt=%ld,%ld hit=%d\n",
741 hwnd, nBar, msg, pt.x, pt.y, hittest );
742
743 switch(SCROLL_trackHitTest)
744 {
745 case SCROLL_NOWHERE: /* No tracking in progress */
746 break;
747
748 case SCROLL_TOP_ARROW:
749 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
750 (hittest == SCROLL_trackHitTest), FALSE );
751 if (hittest == SCROLL_trackHitTest)
752 {
753 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
754 {
755 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
756 SB_LINEUP, hwndCtl );
757 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
758 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
759 (TIMERPROC)0 );
760 }
761 }
762 else KillSystemTimer( hwnd, SCROLL_TIMER );
763 break;
764
765 case SCROLL_TOP_RECT:
766 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
767 thumbPos, infoPtr->flags, vertical,
768 (hittest == SCROLL_trackHitTest), FALSE );
769 if (hittest == SCROLL_trackHitTest)
770 {
771 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
772 {
773 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
774 SB_PAGEUP, hwndCtl );
775 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
776 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
777 (TIMERPROC)0 );
778 }
779 }
780 else KillSystemTimer( hwnd, SCROLL_TIMER );
781 break;
782
783 case SCROLL_THUMB:
784 if (msg == WM_LBUTTONDOWN)
785 {
786 SCROLL_TrackingWin = hwnd;
787 SCROLL_TrackingBar = nBar;
788 SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
789 if (!SCROLL_MovingThumb)
790 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
791 }
792 else if (msg == WM_LBUTTONUP)
793 {
794 if (SCROLL_MovingThumb)
795 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
796 SCROLL_TrackingWin = 0;
797 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
798 thumbPos, infoPtr->flags, vertical,
799 FALSE, FALSE );
800 }
801 else /* WM_MOUSEMOVE */
802 {
803 UINT pos;
804
805 if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
806 else
807 {
808 pt = SCROLL_ClipPos( &rect, pt );
809 pos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
810 }
811 if ( (pos != lastMousePos) || (!SCROLL_MovingThumb) )
812 {
813 if (SCROLL_MovingThumb)
814 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
815 arrowSize, thumbSize );
816 lastMousePos = pos;
817 SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
818 SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
819 vertical,
820 SCROLL_TrackingPos );
821 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
822 MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
823 hwndCtl );
824 if (!SCROLL_MovingThumb)
825 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
826 arrowSize, thumbSize );
827 }
828 }
829 break;
830
831 case SCROLL_BOTTOM_RECT:
832 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
833 thumbPos, infoPtr->flags, vertical,
834 FALSE, (hittest == SCROLL_trackHitTest) );
835 if (hittest == SCROLL_trackHitTest)
836 {
837 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
838 {
839 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
840 SB_PAGEDOWN, hwndCtl );
841 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
842 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
843 (TIMERPROC)0 );
844 }
845 }
846 else KillSystemTimer( hwnd, SCROLL_TIMER );
847 break;
848
849 case SCROLL_BOTTOM_ARROW:
850 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
851 FALSE, (hittest == SCROLL_trackHitTest) );
852 if (hittest == SCROLL_trackHitTest)
853 {
854 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
855 {
856 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
857 SB_LINEDOWN, hwndCtl );
858 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
859 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
860 (TIMERPROC)0 );
861 }
862 }
863 else KillSystemTimer( hwnd, SCROLL_TIMER );
864 break;
865 }
866
867 if (msg == WM_LBUTTONUP)
868 {
869 hittest = SCROLL_trackHitTest;
870 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
871
872 if (hittest == SCROLL_THUMB)
873 {
874 UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
875 trackThumbPos + lastMousePos - lastClickPos );
876 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
877 MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
878 }
879 else
880 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
881 SB_ENDSCROLL, hwndCtl );
882 }
883
884 ReleaseDC( hwnd, hdc );
885 }
886
887
888 /***********************************************************************
889 * ScrollBarWndProc
890 */
891 LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam,
892 LPARAM lParam )
893 {
894 switch(message)
895 {
896 case WM_CREATE:
897 {
898 CREATESTRUCTA *lpCreat = (CREATESTRUCTA *)lParam;
899 if (lpCreat->style & SBS_SIZEBOX)
900 {
901 FIXME("Unimplemented style SBS_SIZEBOX.\n" );
902 return 0;
903 }
904
905 if (lpCreat->style & SBS_VERT)
906 {
907 if (lpCreat->style & SBS_LEFTALIGN)
908 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
909 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
910 else if (lpCreat->style & SBS_RIGHTALIGN)
911 MoveWindow( hwnd,
912 lpCreat->x+lpCreat->cx-GetSystemMetrics(SM_CXVSCROLL)-1,
913 lpCreat->y,
914 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
915 }
916 else /* SBS_HORZ */
917 {
918 if (lpCreat->style & SBS_TOPALIGN)
919 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
920 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
921 else if (lpCreat->style & SBS_BOTTOMALIGN)
922 MoveWindow( hwnd,
923 lpCreat->x,
924 lpCreat->y+lpCreat->cy-GetSystemMetrics(SM_CYHSCROLL)-1,
925 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
926 }
927 }
928 if (!hUpArrow) SCROLL_LoadBitmaps();
929 TRACE("ScrollBar creation, hwnd=%04x\n", hwnd );
930 return 0;
931
932 case WM_LBUTTONDOWN:
933 case WM_LBUTTONUP:
934 case WM_MOUSEMOVE:
935 case WM_SYSTIMER:
936 {
937 POINT pt;
938 CONV_POINT16TO32( (POINT16 *)&lParam, &pt );
939 SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt );
940 }
941 break;
942
943 case WM_KEYDOWN:
944 SCROLL_HandleKbdEvent( hwnd, wParam );
945 break;
946
947 case WM_ERASEBKGND:
948 return 1;
949
950 case WM_GETDLGCODE:
951 return DLGC_WANTARROWS; /* Windows returns this value */
952
953 case WM_PAINT:
954 {
955 PAINTSTRUCT ps;
956 HDC hdc = BeginPaint( hwnd, &ps );
957 SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE );
958 EndPaint( hwnd, &ps );
959 }
960 break;
961
962 case SBM_SETPOS16:
963 case SBM_SETPOS:
964 return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam );
965
966 case SBM_GETPOS16:
967 case SBM_GETPOS:
968 return GetScrollPos( hwnd, SB_CTL );
969
970 case SBM_SETRANGE16:
971 SetScrollRange( hwnd, SB_CTL, LOWORD(lParam), HIWORD(lParam),
972 wParam /* FIXME: Is this correct? */ );
973 return 0;
974
975 case SBM_SETRANGE:
976 SetScrollRange( hwnd, SB_CTL, wParam, lParam, FALSE );
977 return 0; /* FIXME: return previous position */
978
979 case SBM_GETRANGE16:
980 FIXME("don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n", wParam, lParam );
981 return 0;
982
983 case SBM_GETRANGE:
984 GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam );
985 return 0;
986
987 case SBM_ENABLE_ARROWS16:
988 case SBM_ENABLE_ARROWS:
989 return EnableScrollBar( hwnd, SB_CTL, wParam );
990
991 case SBM_SETRANGEREDRAW:
992 SetScrollRange( hwnd, SB_CTL, wParam, lParam, TRUE );
993 return 0; /* FIXME: return previous position */
994
995 case SBM_SETSCROLLINFO:
996 return SetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
997
998 case SBM_GETSCROLLINFO:
999 return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam );
1000
1001 case 0x00e5:
1002 case 0x00e7:
1003 case 0x00e8:
1004 case 0x00eb:
1005 case 0x00ec:
1006 case 0x00ed:
1007 case 0x00ee:
1008 case 0x00ef:
1009 ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n",
1010 message, wParam, lParam );
1011 break;
1012
1013 default:
1014 if (message >= WM_USER)
1015 WARN("unknown msg %04x wp=%04x lp=%08lx\n",
1016 message, wParam, lParam );
1017 return DefWindowProcA( hwnd, message, wParam, lParam );
1018 }
1019 return 0;
1020 }
1021
1022
1023 /*************************************************************************
1024 * SetScrollInfo16 (USER.475)
1025 */
1026 INT16 WINAPI SetScrollInfo16( HWND16 hwnd, INT16 nBar, const SCROLLINFO *info,
1027 BOOL16 bRedraw )
1028 {
1029 return (INT16)SetScrollInfo( hwnd, nBar, info, bRedraw );
1030 }
1031
1032
1033 /*************************************************************************
1034 * SetScrollInfo32 (USER32.501)
1035 * SetScrollInfo32 can be used to set the position, upper bound,
1036 * lower bound, and page size of a scrollbar control.
1037 *
1038 * RETURNS
1039 * Scrollbar position
1040 *
1041 * NOTE
1042 * For 100 lines of text to be displayed in a window of 25 lines,
1043 * one would for instance use info->nMin=0, info->nMax=75
1044 * (corresponding to the 76 different positions of the window on
1045 * the text), and info->nPage=25.
1046 */
1047 INT WINAPI SetScrollInfo(
1048 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1049 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1050 const SCROLLINFO *info /* [I] Specifies what to change and new values */,
1051 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1052 {
1053 INT action;
1054 INT retVal = SCROLL_SetScrollInfo( hwnd, nBar, info, &action );
1055
1056 if( action & SA_SSI_HIDE )
1057 SCROLL_ShowScrollBar( hwnd, nBar, FALSE, FALSE );
1058 else
1059 {
1060 if( action & SA_SSI_SHOW )
1061 if( SCROLL_ShowScrollBar( hwnd, nBar, TRUE, TRUE ) )
1062 return retVal; /* SetWindowPos() already did the painting */
1063
1064 if( bRedraw && (action & SA_SSI_REFRESH))
1065 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1066 else if( action & SA_SSI_REPAINT_ARROWS )
1067 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, FALSE );
1068 }
1069 return retVal;
1070 }
1071
1072 INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
1073 const SCROLLINFO *info, INT *action )
1074 {
1075 /* Update the scrollbar state and set action flags according to
1076 * what has to be done graphics wise. */
1077
1078 SCROLLBAR_INFO *infoPtr;
1079 UINT new_flags;
1080
1081 dbg_decl_str(scroll, 256);
1082
1083 *action = 0;
1084
1085 if (!(infoPtr = SCROLL_GetScrollInfo(hwnd, nBar))) return 0;
1086 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
1087 if ((info->cbSize != sizeof(*info)) &&
1088 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
1089
1090 /* Set the page size */
1091
1092 if (info->fMask & SIF_PAGE)
1093 {
1094 dsprintf(scroll, " page=%d", info->nPage );
1095 if( infoPtr->Page != info->nPage )
1096 {
1097 infoPtr->Page = info->nPage;
1098 *action |= SA_SSI_REFRESH;
1099 }
1100 }
1101
1102 /* Set the scroll pos */
1103
1104 if (info->fMask & SIF_POS)
1105 {
1106 dsprintf(scroll, " pos=%d", info->nPos );
1107 if( infoPtr->CurVal != info->nPos )
1108 {
1109 infoPtr->CurVal = info->nPos;
1110 *action |= SA_SSI_REFRESH;
1111 }
1112 }
1113
1114 /* Set the scroll range */
1115
1116 if (info->fMask & SIF_RANGE)
1117 {
1118 dsprintf(scroll, " min=%d max=%d", info->nMin, info->nMax );
1119
1120 /* Invalid range -> range is set to (0,0) */
1121 if ((info->nMin > info->nMax) ||
1122 ((UINT)(info->nMax - info->nMin) >= 0x80000000))
1123 {
1124 infoPtr->MinVal = 0;
1125 infoPtr->MaxVal = 0;
1126 }
1127 else
1128 {
1129 if( infoPtr->MinVal != info->nMin ||
1130 infoPtr->MaxVal != info->nMax )
1131 {
1132 *action |= SA_SSI_REFRESH;
1133 infoPtr->MinVal = info->nMin;
1134 infoPtr->MaxVal = info->nMax;
1135 }
1136 }
1137 }
1138
1139 TRACE("hwnd=%04x bar=%d %s\n",
1140 hwnd, nBar, dbg_str(scroll));
1141
1142 /* Make sure the page size is valid */
1143
1144 if (infoPtr->Page < 0) infoPtr->Page = 0;
1145 else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
1146 infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
1147
1148 /* Make sure the pos is inside the range */
1149
1150 if (infoPtr->CurVal < infoPtr->MinVal)
1151 infoPtr->CurVal = infoPtr->MinVal;
1152 else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1153 infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
1154
1155 TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1156 infoPtr->Page, infoPtr->CurVal,
1157 infoPtr->MinVal, infoPtr->MaxVal );
1158
1159 /* Check if the scrollbar should be hidden or disabled */
1160
1161 if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
1162 {
1163 new_flags = infoPtr->flags;
1164 if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1165 {
1166 /* Hide or disable scroll-bar */
1167 if (info->fMask & SIF_DISABLENOSCROLL)
1168 {
1169 new_flags = ESB_DISABLE_BOTH;
1170 *action |= SA_SSI_REFRESH;
1171 }
1172 else if (nBar != SB_CTL)
1173 {
1174 *action = SA_SSI_HIDE;
1175 goto done;
1176 }
1177 }
1178 else /* Show and enable scroll-bar */
1179 {
1180 new_flags = 0;
1181 if (nBar != SB_CTL)
1182 *action |= SA_SSI_SHOW;
1183 }
1184
1185 if (infoPtr->flags != new_flags) /* check arrow flags */
1186 {
1187 infoPtr->flags = new_flags;
1188 *action |= SA_SSI_REPAINT_ARROWS;
1189 }
1190 }
1191
1192 done:
1193 /* Return current position */
1194
1195 return infoPtr->CurVal;
1196 }
1197
1198
1199 /*************************************************************************
1200 * GetScrollInfo16 (USER.476)
1201 */
1202 BOOL16 WINAPI GetScrollInfo16( HWND16 hwnd, INT16 nBar, LPSCROLLINFO info )
1203 {
1204 return GetScrollInfo( hwnd, nBar, info );
1205 }
1206
1207
1208 /*************************************************************************
1209 * GetScrollInfo32 (USER32.284)
1210 * GetScrollInfo32 can be used to retrieve the position, upper bound,
1211 * lower bound, and page size of a scrollbar control.
1212 *
1213 * RETURNS STD
1214 */
1215 BOOL WINAPI GetScrollInfo(
1216 HWND hwnd /* [I] Handle of window */ ,
1217 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1218 LPSCROLLINFO info /* [IO] (info.fMask [I] specifies which values are to retrieve) */)
1219 {
1220 SCROLLBAR_INFO *infoPtr;
1221
1222 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1223 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
1224 if ((info->cbSize != sizeof(*info)) &&
1225 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
1226
1227 if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
1228 if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
1229 if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
1230 info->nTrackPos = (SCROLL_TrackingWin==hwnd) ? SCROLL_TrackingVal : 0;
1231 if (info->fMask & SIF_RANGE)
1232 {
1233 info->nMin = infoPtr->MinVal;
1234 info->nMax = infoPtr->MaxVal;
1235 }
1236 return (info->fMask & SIF_ALL) != 0;
1237 }
1238
1239
1240 /*************************************************************************
1241 * SetScrollPos16 (USER.62)
1242 */
1243 INT16 WINAPI SetScrollPos16( HWND16 hwnd, INT16 nBar, INT16 nPos,
1244 BOOL16 bRedraw )
1245 {
1246 return (INT16)SetScrollPos( hwnd, nBar, nPos, bRedraw );
1247 }
1248
1249
1250 /*************************************************************************
1251 * SetScrollPos32 (USER32.502)
1252 *
1253 * RETURNS
1254 * Success: Scrollbar position
1255 * Failure: 0
1256 *
1257 * REMARKS
1258 * Note the ambiguity when 0 is returned. Use GetLastError
1259 * to make sure there was an error (and to know which one).
1260 */
1261 INT WINAPI SetScrollPos(
1262 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1263 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1264 INT nPos /* [I] New value */,
1265 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */ )
1266 {
1267 SCROLLINFO info;
1268 SCROLLBAR_INFO *infoPtr;
1269 INT oldPos;
1270
1271 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1272 oldPos = infoPtr->CurVal;
1273 info.cbSize = sizeof(info);
1274 info.nPos = nPos;
1275 info.fMask = SIF_POS;
1276 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1277 return oldPos;
1278 }
1279
1280
1281 /*************************************************************************
1282 * GetScrollPos16 (USER.63)
1283 */
1284 INT16 WINAPI GetScrollPos16( HWND16 hwnd, INT16 nBar )
1285 {
1286 return (INT16)GetScrollPos( hwnd, nBar );
1287 }
1288
1289
1290 /*************************************************************************
1291 * GetScrollPos32 (USER32.285)
1292 *
1293 * RETURNS
1294 * Success: Current position
1295 * Failure: 0
1296 *
1297 * REMARKS
1298 * Note the ambiguity when 0 is returned. Use GetLastError
1299 * to make sure there was an error (and to know which one).
1300 */
1301 INT WINAPI GetScrollPos(
1302 HWND hwnd, /* [I] Handle of window */
1303 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
1304 {
1305 SCROLLBAR_INFO *infoPtr;
1306
1307 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1308 return infoPtr->CurVal;
1309 }
1310
1311
1312 /*************************************************************************
1313 * SetScrollRange16 (USER.64)
1314 */
1315 void WINAPI SetScrollRange16( HWND16 hwnd, INT16 nBar,
1316 INT16 MinVal, INT16 MaxVal, BOOL16 bRedraw )
1317 {
1318 /* Invalid range -> range is set to (0,0) */
1319 if ((INT)MaxVal - (INT)MinVal > 0x7fff) MinVal = MaxVal = 0;
1320 SetScrollRange( hwnd, nBar, MinVal, MaxVal, bRedraw );
1321 }
1322
1323
1324 /*************************************************************************
1325 * SetScrollRange32 (USER32.503)
1326 *
1327 * RETURNS STD
1328 */
1329 BOOL WINAPI SetScrollRange(
1330 HWND hwnd, /* [I] Handle of window whose scrollbar will be affected */
1331 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1332 INT MinVal, /* [I] New minimum value */
1333 INT MaxVal, /* [I] New maximum value */
1334 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1335 {
1336 SCROLLINFO info;
1337
1338 info.cbSize = sizeof(info);
1339 info.nMin = MinVal;
1340 info.nMax = MaxVal;
1341 info.fMask = SIF_RANGE;
1342 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1343 return TRUE;
1344 }
1345
1346
1347 /*************************************************************************
1348 * SCROLL_SetNCSbState
1349 *
1350 * Updates both scrollbars at the same time. Used by MDI CalcChildScroll().
1351 */
1352 INT SCROLL_SetNCSbState(WND* wndPtr, int vMin, int vMax, int vPos,
1353 int hMin, int hMax, int hPos)
1354 {
1355 INT vA, hA;
1356 SCROLLINFO vInfo, hInfo;
1357
1358 vInfo.cbSize = hInfo.cbSize = sizeof(SCROLLINFO);
1359 vInfo.nMin = vMin; hInfo.nMin = hMin;
1360 vInfo.nMax = vMax; hInfo.nMax = hMax;
1361 vInfo.nPos = vPos; hInfo.nPos = hPos;
1362 vInfo.fMask = hInfo.fMask = SIF_RANGE | SIF_POS;
1363
1364 SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_VERT, &vInfo, &vA );
1365 SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_HORZ, &hInfo, &hA );
1366
1367 if( !SCROLL_ShowScrollBar( wndPtr->hwndSelf, SB_BOTH,
1368 (hA & SA_SSI_SHOW),(vA & SA_SSI_SHOW) ) )
1369 {
1370 /* SetWindowPos() wasn't called, just redraw the scrollbars if needed */
1371 if( vA & SA_SSI_REFRESH )
1372 SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_VERT, FALSE, TRUE );
1373
1374 if( hA & SA_SSI_REFRESH )
1375 SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_HORZ, FALSE, TRUE );
1376 }
1377 return 0;
1378 }
1379
1380
1381 /*************************************************************************
1382 * GetScrollRange16 (USER.65)
1383 */
1384 BOOL16 WINAPI GetScrollRange16( HWND16 hwnd, INT16 nBar,
1385 LPINT16 lpMin, LPINT16 lpMax)
1386 {
1387 INT min, max;
1388 BOOL16 ret = GetScrollRange( hwnd, nBar, &min, &max );
1389 if (lpMin) *lpMin = min;
1390 if (lpMax) *lpMax = max;
1391 return ret;
1392 }
1393
1394
1395 /*************************************************************************
1396 * GetScrollRange32 (USER32.286)
1397 *
1398 * RETURNS STD
1399 */
1400 BOOL WINAPI GetScrollRange(
1401 HWND hwnd, /* [I] Handle of window */
1402 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1403 LPINT lpMin, /* [O] Where to store minimum value */
1404 LPINT lpMax /* [O] Where to store maximum value */)
1405 {
1406 SCROLLBAR_INFO *infoPtr;
1407
1408 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar )))
1409 {
1410 if (lpMin) lpMin = 0;
1411 if (lpMax) lpMax = 0;
1412 return FALSE;
1413 }
1414 if (lpMin) *lpMin = infoPtr->MinVal;
1415 if (lpMax) *lpMax = infoPtr->MaxVal;
1416 return TRUE;
1417 }
1418
1419
1420 /*************************************************************************
1421 * SCROLL_ShowScrollBar()
1422 *
1423 * Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
1424 * NOTE: fShowV/fShowH must be zero when nBar is SB_HORZ/SB_VERT.
1425 */
1426 BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
1427 BOOL fShowH, BOOL fShowV )
1428 {
1429 WND *wndPtr = WIN_FindWndPtr( hwnd );
1430 BOOL retvalue = FALSE;
1431
1432 if (!wndPtr) return FALSE;
1433 TRACE("hwnd=%04x bar=%d horz=%d, vert=%d\n",
1434 hwnd, nBar, fShowH, fShowV );
1435
1436 switch(nBar)
1437 {
1438 case SB_CTL:
1439 ShowWindow( hwnd, fShowH ? SW_SHOW : SW_HIDE );
1440 retvalue = TRUE;
1441 goto END;
1442
1443 case SB_BOTH:
1444 case SB_HORZ:
1445 if (fShowH)
1446 {
1447 fShowH = !(wndPtr->dwStyle & WS_HSCROLL);
1448 wndPtr->dwStyle |= WS_HSCROLL;
1449 }
1450 else /* hide it */
1451 {
1452 fShowH = (wndPtr->dwStyle & WS_HSCROLL);
1453 wndPtr->dwStyle &= ~WS_HSCROLL;
1454 }
1455 if( nBar == SB_HORZ ) break;
1456 /* fall through */
1457
1458 case SB_VERT:
1459 if (fShowV)
1460 {
1461 fShowV = !(wndPtr->dwStyle & WS_VSCROLL);
1462 wndPtr->dwStyle |= WS_VSCROLL;
1463 }
1464 else /* hide it */
1465 {
1466 fShowV = (wndPtr->dwStyle & WS_VSCROLL);
1467 wndPtr->dwStyle &= ~WS_VSCROLL;
1468 }
1469 break;
1470
1471 default:
1472 retvalue = FALSE; /* Nothing to do! */
1473 goto END;
1474 }
1475
1476 if( fShowH || fShowV ) /* frame has been changed, let the window redraw itself */
1477 {
1478 SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
1479 | SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
1480 retvalue = TRUE;
1481 goto END;
1482 }
1483
1484 retvalue = FALSE; /* no frame changes */
1485 END:
1486 WIN_ReleaseWndPtr(wndPtr);
1487 return retvalue;
1488 }
1489
1490
1491 /*************************************************************************
1492 * ShowScrollBar16 (USER.267)
1493 */
1494 void WINAPI ShowScrollBar16( HWND16 hwnd, INT16 nBar, BOOL16 fShow )
1495 {
1496 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1497 (nBar == SB_HORZ) ? 0 : fShow );
1498 }
1499
1500
1501 /*************************************************************************
1502 * ShowScrollBar32 (USER32.532)
1503 *
1504 * RETURNS STD
1505 */
1506 BOOL WINAPI ShowScrollBar(
1507 HWND hwnd, /* [I] Handle of window whose scrollbar(s) will be affected */
1508 INT nBar, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1509 BOOL fShow /* [I] TRUE = show, FALSE = hide */)
1510 {
1511 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1512 (nBar == SB_HORZ) ? 0 : fShow );
1513 return TRUE;
1514 }
1515
1516
1517 /*************************************************************************
1518 * EnableScrollBar16 (USER.482)
1519 */
1520 BOOL16 WINAPI EnableScrollBar16( HWND16 hwnd, INT16 nBar, UINT16 flags )
1521 {
1522 return EnableScrollBar( hwnd, nBar, flags );
1523 }
1524
1525
1526 /*************************************************************************
1527 * EnableScrollBar32 (USER32.171)
1528 */
1529 BOOL WINAPI EnableScrollBar( HWND hwnd, INT nBar, UINT flags )
1530 {
1531 BOOL bFineWithMe;
1532 SCROLLBAR_INFO *infoPtr;
1533
1534 TRACE("%04x %d %d\n", hwnd, nBar, flags );
1535
1536 flags &= ESB_DISABLE_BOTH;
1537
1538 if (nBar == SB_BOTH)
1539 {
1540 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, SB_VERT ))) return FALSE;
1541 if (!(bFineWithMe = (infoPtr->flags == flags)) )
1542 {
1543 infoPtr->flags = flags;
1544 SCROLL_RefreshScrollBar( hwnd, SB_VERT, TRUE, TRUE );
1545 }
1546 nBar = SB_HORZ;
1547 }
1548 else
1549 bFineWithMe = TRUE;
1550
1551 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1552 if (bFineWithMe && infoPtr->flags == flags) return FALSE;
1553 infoPtr->flags = flags;
1554
1555 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1556 return TRUE;
1557 }
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