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Some enhancements, and removal of C++ constructs.
[wine/gsoc_dplay.git] / controls / scroll.c
blob59c6914fa59bd3d308adce6b137e5d71cb6bce06
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 "cache.h"
14 #include "tweak.h"
15
16 DEFAULT_DEBUG_CHANNEL(scroll)
17
18
19 static HBITMAP hUpArrow = 0;
20 static HBITMAP hDnArrow = 0;
21 static HBITMAP hLfArrow = 0;
22 static HBITMAP hRgArrow = 0;
23 static HBITMAP hUpArrowD = 0;
24 static HBITMAP hDnArrowD = 0;
25 static HBITMAP hLfArrowD = 0;
26 static HBITMAP hRgArrowD = 0;
27 static HBITMAP hUpArrowI = 0;
28 static HBITMAP hDnArrowI = 0;
29 static HBITMAP hLfArrowI = 0;
30 static HBITMAP hRgArrowI = 0;
31
32 #define TOP_ARROW(flags,pressed) \
33 (((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow))
34 #define BOTTOM_ARROW(flags,pressed) \
35 (((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow))
36 #define LEFT_ARROW(flags,pressed) \
37 (((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow))
38 #define RIGHT_ARROW(flags,pressed) \
39 (((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow))
40
41
42 /* Minimum size of the rectangle between the arrows */
43 #define SCROLL_MIN_RECT 4
44
45 /* Minimum size of the thumb in pixels */
46 #define SCROLL_MIN_THUMB 6
47
48 /* Overlap between arrows and thumb */
49 #define SCROLL_ARROW_THUMB_OVERLAP 1
50
51 /* Delay (in ms) before first repetition when holding the button down */
52 #define SCROLL_FIRST_DELAY 200
53
54 /* Delay (in ms) between scroll repetitions */
55 #define SCROLL_REPEAT_DELAY 50
56
57 /* Scroll timer id */
58 #define SCROLL_TIMER 0
59
60 /* Scroll-bar hit testing */
61 enum SCROLL_HITTEST
62 {
63 SCROLL_NOWHERE, /* Outside the scroll bar */
64 SCROLL_TOP_ARROW, /* Top or left arrow */
65 SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
66 SCROLL_THUMB, /* Thumb rectangle */
67 SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
68 SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
69 };
70
71 /* What to do after SCROLL_SetScrollInfo() */
72 #define SA_SSI_HIDE 0x0001
73 #define SA_SSI_SHOW 0x0002
74 #define SA_SSI_REFRESH 0x0004
75 #define SA_SSI_REPAINT_ARROWS 0x0008
76
77 /* Thumb-tracking info */
78 static HWND SCROLL_TrackingWin = 0;
79 static INT SCROLL_TrackingBar = 0;
80 static INT SCROLL_TrackingPos = 0;
81 static INT SCROLL_TrackingVal = 0;
82 /* Hit test code of the last button-down event */
83 static enum SCROLL_HITTEST SCROLL_trackHitTest;
84 static BOOL SCROLL_trackVertical;
85
86 /* Is the moving thumb being displayed? */
87 static BOOL SCROLL_MovingThumb = FALSE;
88
89 /* Local functions */
90 static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
91 BOOL fShowH, BOOL fShowV );
92 static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
93 const SCROLLINFO *info, INT *action );
94
95 /***********************************************************************
96 * SCROLL_LoadBitmaps
97 */
98 static void SCROLL_LoadBitmaps(void)
99 {
100 hUpArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROW) );
101 hDnArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROW) );
102 hLfArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROW) );
103 hRgArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROW) );
104 hUpArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWD) );
105 hDnArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWD) );
106 hLfArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWD) );
107 hRgArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWD) );
108 hUpArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWI) );
109 hDnArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWI) );
110 hLfArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWI) );
111 hRgArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWI) );
112 }
113
114
115 /***********************************************************************
116 * SCROLL_GetPtrScrollInfo
117 */
118 static SCROLLBAR_INFO *SCROLL_GetPtrScrollInfo( WND* wndPtr, INT nBar )
119 {
120 SCROLLBAR_INFO *infoPtr;
121
122 if (!wndPtr) return NULL;
123 switch(nBar)
124 {
125 case SB_HORZ: infoPtr = (SCROLLBAR_INFO *)wndPtr->pHScroll; break;
126 case SB_VERT: infoPtr = (SCROLLBAR_INFO *)wndPtr->pVScroll; break;
127 case SB_CTL: infoPtr = (SCROLLBAR_INFO *)wndPtr->wExtra; break;
128 default: return NULL;
129 }
130
131 if (!infoPtr) /* Create the info structure if needed */
132 {
133 if ((infoPtr = HeapAlloc( SystemHeap, 0, sizeof(SCROLLBAR_INFO) )))
134 {
135 infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0;
136 infoPtr->MaxVal = 100;
137 infoPtr->flags = ESB_ENABLE_BOTH;
138 if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr;
139 else wndPtr->pVScroll = infoPtr;
140 }
141 if (!hUpArrow) SCROLL_LoadBitmaps();
142 }
143 return infoPtr;
144 }
145
146
147 /***********************************************************************
148 * SCROLL_GetScrollInfo
149 */
150 static SCROLLBAR_INFO *SCROLL_GetScrollInfo( HWND hwnd, INT nBar )
151 {
152 SCROLLBAR_INFO *retvalue;
153 WND *wndPtr = WIN_FindWndPtr( hwnd );
154 retvalue = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
155 WIN_ReleaseWndPtr(wndPtr);
156 return retvalue;
157 }
158
159
160 /***********************************************************************
161 * SCROLL_GetScrollBarRect
162 *
163 * Compute the scroll bar rectangle, in drawing coordinates (i.e. client
164 * coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
165 * 'arrowSize' returns the width or height of an arrow (depending on
166 * the orientation of the scrollbar), 'thumbSize' returns the size of
167 * the thumb, and 'thumbPos' returns the position of the thumb
168 * relative to the left or to the top.
169 * Return TRUE if the scrollbar is vertical, FALSE if horizontal.
170 */
171 static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
172 INT *arrowSize, INT *thumbSize,
173 INT *thumbPos )
174 {
175 INT pixels;
176 BOOL vertical;
177 WND *wndPtr = WIN_FindWndPtr( hwnd );
178
179 switch(nBar)
180 {
181 case SB_HORZ:
182 lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left;
183 lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
184 lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left;
185 lprect->bottom = lprect->top + GetSystemMetrics(SM_CYHSCROLL);
186 if(wndPtr->dwStyle & WS_BORDER) {
187 lprect->left--;
188 lprect->right++;
189 } else if(wndPtr->dwStyle & WS_VSCROLL)
190 lprect->right++;
191 vertical = FALSE;
192 break;
193
194 case SB_VERT:
195 lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
196 lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top;
197 lprect->right = lprect->left + GetSystemMetrics(SM_CXVSCROLL);
198 lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
199 if(wndPtr->dwStyle & WS_BORDER) {
200 lprect->top--;
201 lprect->bottom++;
202 } else if(wndPtr->dwStyle & WS_HSCROLL)
203 lprect->bottom++;
204 vertical = TRUE;
205 break;
206
207 case SB_CTL:
208 GetClientRect( hwnd, lprect );
209 vertical = ((wndPtr->dwStyle & SBS_VERT) != 0);
210 break;
211
212 default:
213 WIN_ReleaseWndPtr(wndPtr);
214 return FALSE;
215 }
216
217 if (vertical) pixels = lprect->bottom - lprect->top;
218 else pixels = lprect->right - lprect->left;
219
220 if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
221 {
222 if (pixels > SCROLL_MIN_RECT)
223 *arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
224 else
225 *arrowSize = 0;
226 *thumbPos = *thumbSize = 0;
227 }
228 else
229 {
230 SCROLLBAR_INFO *info = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
231
232 *arrowSize = GetSystemMetrics(SM_CXVSCROLL);
233 pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
234
235 if (info->Page)
236 {
237 *thumbSize = pixels * info->Page / (info->MaxVal-info->MinVal+1);
238 if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
239 }
240 else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
241
242 if (((pixels -= *thumbSize ) < 0) ||
243 ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
244 {
245 /* Rectangle too small or scrollbar disabled -> no thumb */
246 *thumbPos = *thumbSize = 0;
247 }
248 else
249 {
250 INT max = info->MaxVal - MAX( info->Page-1, 0 );
251 if (info->MinVal >= max)
252 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
253 else
254 *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
255 + pixels * (info->CurVal-info->MinVal) / (max - info->MinVal);
256 }
257 }
258 WIN_ReleaseWndPtr(wndPtr);
259 return vertical;
260 }
261
262
263 /***********************************************************************
264 * SCROLL_GetThumbVal
265 *
266 * Compute the current scroll position based on the thumb position in pixels
267 * from the top of the scroll-bar.
268 */
269 static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
270 BOOL vertical, INT pos )
271 {
272 INT thumbSize;
273 INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
274
275 if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
276 return infoPtr->MinVal;
277
278 if (infoPtr->Page)
279 {
280 thumbSize = pixels * infoPtr->Page/(infoPtr->MaxVal-infoPtr->MinVal+1);
281 if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
282 }
283 else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
284
285 if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal;
286
287 pos = MAX( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) );
288 if (pos > pixels) pos = pixels;
289
290 if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal;
291 else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1;
292 return infoPtr->MinVal + ((pos + pixels / 2) / pixels);
293 }
294
295 /***********************************************************************
296 * SCROLL_PtInRectEx
297 */
298 static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
299 {
300 RECT rect = *lpRect;
301
302 if (vertical)
303 {
304 rect.left -= lpRect->right - lpRect->left;
305 rect.right += lpRect->right - lpRect->left;
306 }
307 else
308 {
309 rect.top -= lpRect->bottom - lpRect->top;
310 rect.bottom += lpRect->bottom - lpRect->top;
311 }
312 return PtInRect( &rect, pt );
313 }
314
315 /***********************************************************************
316 * SCROLL_ClipPos
317 */
318 static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
319 {
320 if( pt.x < lpRect->left )
321 pt.x = lpRect->left;
322 else
323 if( pt.x > lpRect->right )
324 pt.x = lpRect->right;
325
326 if( pt.y < lpRect->top )
327 pt.y = lpRect->top;
328 else
329 if( pt.y > lpRect->bottom )
330 pt.y = lpRect->bottom;
331
332 return pt;
333 }
334
335
336 /***********************************************************************
337 * SCROLL_HitTest
338 *
339 * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
340 */
341 static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
342 POINT pt, BOOL bDragging )
343 {
344 INT arrowSize, thumbSize, thumbPos;
345 RECT rect;
346
347 BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
348 &arrowSize, &thumbSize, &thumbPos );
349
350 if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
351 (!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
352
353 if (vertical)
354 {
355 if (pt.y < rect.top + arrowSize) return SCROLL_TOP_ARROW;
356 if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW;
357 if (!thumbPos) return SCROLL_TOP_RECT;
358 pt.y -= rect.top;
359 if (pt.y < thumbPos) return SCROLL_TOP_RECT;
360 if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
361 }
362 else /* horizontal */
363 {
364 if (pt.x < rect.left + arrowSize) return SCROLL_TOP_ARROW;
365 if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW;
366 if (!thumbPos) return SCROLL_TOP_RECT;
367 pt.x -= rect.left;
368 if (pt.x < thumbPos) return SCROLL_TOP_RECT;
369 if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
370 }
371 return SCROLL_THUMB;
372 }
373
374
375 /***********************************************************************
376 * SCROLL_DrawArrows
377 *
378 * Draw the scroll bar arrows.
379 */
380 static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
381 RECT *rect, INT arrowSize, BOOL vertical,
382 BOOL top_pressed, BOOL bottom_pressed )
383 {
384 HDC hdcMem = CreateCompatibleDC( hdc );
385 HBITMAP hbmpPrev = SelectObject( hdcMem, vertical ?
386 TOP_ARROW(infoPtr->flags, top_pressed)
387 : LEFT_ARROW(infoPtr->flags, top_pressed));
388 INT offset = (TWEAK_WineLook > WIN31_LOOK) ? 1 : 0;
389
390 if (offset) arrowSize--;
391 SetStretchBltMode( hdc, STRETCH_DELETESCANS );
392 StretchBlt( hdc, rect->left+offset, rect->top+offset,
393 vertical ? rect->right-(rect->left+offset) : arrowSize,
394 vertical ? arrowSize : rect->bottom-(rect->top+offset),
395 hdcMem, 0, 0,
396 GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
397 SRCCOPY );
398
399 SelectObject( hdcMem, vertical ?
400 BOTTOM_ARROW( infoPtr->flags, bottom_pressed )
401 : RIGHT_ARROW( infoPtr->flags, bottom_pressed ) );
402 if (vertical)
403 StretchBlt( hdc, (rect->left+offset), rect->bottom - arrowSize,
404 rect->right - (rect->left+offset), arrowSize,
405 hdcMem, 0, 0,
406 GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL),
407 SRCCOPY );
408 else
409 StretchBlt( hdc, rect->right - arrowSize, rect->top+offset,
410 arrowSize, rect->bottom - (rect->top+offset),
411 hdcMem, 0, 0,
412 GetSystemMetrics(SM_CXVSCROLL), GetSystemMetrics(SM_CYHSCROLL),
413 SRCCOPY );
414 SelectObject( hdcMem, hbmpPrev );
415 DeleteDC( hdcMem );
416 }
417
418
419 /***********************************************************************
420 * SCROLL_DrawMovingThumb
421 *
422 * Draw the moving thumb rectangle.
423 */
424 static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
425 INT arrowSize, INT thumbSize )
426 {
427 RECT r = *rect;
428 if (vertical)
429 {
430 r.top += SCROLL_TrackingPos;
431 if (r.top < rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
432 r.top = rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
433 if (r.top + thumbSize >
434 rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
435 r.top = rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
436 - thumbSize;
437 r.bottom = r.top + thumbSize;
438 }
439 else
440 {
441 r.left += SCROLL_TrackingPos;
442 if (r.left < rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
443 r.left = rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
444 if (r.left + thumbSize >
445 rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP))
446 r.left = rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)
447 - thumbSize;
448 r.right = r.left + thumbSize;
449 }
450 DrawFocusRect( hdc, &r );
451 SCROLL_MovingThumb = !SCROLL_MovingThumb;
452 }
453
454
455 /***********************************************************************
456 * SCROLL_DrawInterior
457 *
458 * Draw the scroll bar interior (everything except the arrows).
459 */
460 static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
461 RECT *rect, INT arrowSize,
462 INT thumbSize, INT thumbPos,
463 UINT flags, BOOL vertical,
464 BOOL top_selected, BOOL bottom_selected )
465 {
466 RECT r;
467 HPEN hSavePen;
468 HBRUSH hSaveBrush,hBrush;
469 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
470
471 if (Save_SCROLL_MovingThumb &&
472 (SCROLL_TrackingWin == hwnd) &&
473 (SCROLL_TrackingBar == nBar))
474 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
475
476 /* Select the correct brush and pen */
477
478 if ((flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)
479 {
480 /* This ought to be the color of the parent window */
481 if (TWEAK_WineLook == WIN31_LOOK) {
482 hBrush = GetSysColorBrush(COLOR_WINDOW);
483 } else {
484 /* Under Win9x look & feel, scrollbars don't have a solid border.
485 * To make scrollbar's background different from the window
486 * background, we need to apply a gray 0x55aa pattern brush.
487 * Otherwise it won't look good.
488 */
489 hBrush = CACHE_GetPattern55AABrush();
490 }
491 }
492 else
493 {
494 /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
495 * The window-owned scrollbars need to call DEFWND_ControlColor
496 * to correctly setup default scrollbar colors
497 */
498 if (nBar == SB_CTL) {
499 hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
500 (WPARAM)hdc,(LPARAM)hwnd);
501 } else {
502 hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
503 }
504 }
505 hSavePen = SelectObject( hdc, GetSysColorPen(COLOR_WINDOWFRAME) );
506 hSaveBrush = SelectObject( hdc, hBrush );
507
508 /* Calculate the scroll rectangle */
509
510 r = *rect;
511 if (vertical)
512 {
513 r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
514 r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
515 }
516 else
517 {
518 r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
519 r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
520 }
521
522 /* Draw the scroll bar frame */
523
524 /* Only draw outline if Win 3.1. Mar 24, 1999 - Ronald B. Cemer */
525 if (TWEAK_WineLook == WIN31_LOOK)
526 Rectangle( hdc, r.left, r.top, r.right, r.bottom );
527
528 /* Draw the scroll rectangles and thumb */
529
530 if (!thumbPos) /* No thumb to draw */
531 {
532 PatBlt( hdc, r.left+1, r.top+1, r.right - r.left - 2,
533 r.bottom - r.top - 2, PATCOPY );
534
535 /* cleanup and return */
536 SelectObject( hdc, hSavePen );
537 SelectObject( hdc, hSaveBrush );
538 return;
539 }
540
541 if (vertical)
542 {
543 PatBlt( hdc, r.left + 1, r.top + 1,
544 r.right - r.left - 2,
545 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - 1,
546 top_selected ? 0x0f0000 : PATCOPY );
547 r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
548 PatBlt( hdc, r.left + 1, r.top + thumbSize,
549 r.right - r.left - 2,
550 r.bottom - r.top - thumbSize - 1,
551 bottom_selected ? 0x0f0000 : PATCOPY );
552 r.bottom = r.top + thumbSize;
553 }
554 else /* horizontal */
555 {
556 PatBlt( hdc, r.left + 1, r.top + 1,
557 thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - 1,
558 r.bottom - r.top - 2,
559 top_selected ? 0x0f0000 : PATCOPY );
560 r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
561 PatBlt( hdc, r.left + thumbSize, r.top + 1,
562 r.right - r.left - thumbSize - 1,
563 r.bottom - r.top - 2,
564 bottom_selected ? 0x0f0000 : PATCOPY );
565 r.right = r.left + thumbSize;
566 }
567
568 /* Draw the thumb */
569
570 SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) );
571 if (TWEAK_WineLook == WIN31_LOOK)
572 {
573 Rectangle( hdc, r.left, r.top, r.right, r.bottom );
574 r.top++, r.left++;
575 }
576 else
577 {
578 r.top++, r.left++;
579 r.bottom--; r.right--;
580 Rectangle( hdc, r.left, r.top, r.right-1, r.bottom-1 );
581 }
582 DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT );
583
584 if (Save_SCROLL_MovingThumb &&
585 (SCROLL_TrackingWin == hwnd) &&
586 (SCROLL_TrackingBar == nBar))
587 SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
588
589 /* cleanup */
590 SelectObject( hdc, hSavePen );
591 SelectObject( hdc, hSaveBrush );
592 }
593
594
595 /***********************************************************************
596 * SCROLL_DrawScrollBar
597 *
598 * Redraw the whole scrollbar.
599 */
600 void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
601 BOOL arrows, BOOL interior )
602 {
603 INT arrowSize, thumbSize, thumbPos;
604 RECT rect;
605 BOOL vertical;
606 WND *wndPtr = WIN_FindWndPtr( hwnd );
607 SCROLLBAR_INFO *infoPtr = SCROLL_GetPtrScrollInfo( wndPtr, nBar );
608 BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
609
610 if (!wndPtr || !infoPtr ||
611 ((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) ||
612 ((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) goto END;
613 if (!WIN_IsWindowDrawable( wndPtr, FALSE )) goto END;
614
615 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
616 &arrowSize, &thumbSize, &thumbPos );
617
618 if (Save_SCROLL_MovingThumb &&
619 (SCROLL_TrackingWin == hwnd) &&
620 (SCROLL_TrackingBar == nBar))
621 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
622
623 /* Draw the arrows */
624
625 if (arrows && arrowSize)
626 {
627 if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
628 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
629 (SCROLL_trackHitTest == SCROLL_TOP_ARROW),
630 (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
631 else
632 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
633 FALSE, FALSE );
634 }
635 if( interior )
636 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
637 thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
638
639 if (Save_SCROLL_MovingThumb &&
640 (SCROLL_TrackingWin == hwnd) &&
641 (SCROLL_TrackingBar == nBar))
642 SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
643
644 END:
645 WIN_ReleaseWndPtr(wndPtr);
646 }
647
648
649 /***********************************************************************
650 * SCROLL_RefreshScrollBar
651 *
652 * Repaint the scroll bar interior after a SetScrollRange() or
653 * SetScrollPos() call.
654 */
655 static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
656 BOOL arrows, BOOL interior )
657 {
658 HDC hdc = GetDCEx( hwnd, 0,
659 DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
660 if (!hdc) return;
661
662 SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
663 ReleaseDC( hwnd, hdc );
664 }
665
666
667 /***********************************************************************
668 * SCROLL_HandleKbdEvent
669 *
670 * Handle a keyboard event (only for SB_CTL scrollbars).
671 */
672 static void SCROLL_HandleKbdEvent( HWND hwnd, WPARAM wParam )
673 {
674 WND *wndPtr = WIN_FindWndPtr( hwnd );
675 WPARAM msg;
676
677 switch(wParam)
678 {
679 case VK_PRIOR: msg = SB_PAGEUP; break;
680 case VK_NEXT: msg = SB_PAGEDOWN; break;
681 case VK_HOME: msg = SB_TOP; break;
682 case VK_END: msg = SB_BOTTOM; break;
683 case VK_UP: msg = SB_LINEUP; break;
684 case VK_DOWN: msg = SB_LINEDOWN; break;
685 default:
686 WIN_ReleaseWndPtr(wndPtr);
687 return;
688 }
689 SendMessageA( GetParent(hwnd),
690 (wndPtr->dwStyle & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL,
691 msg, hwnd );
692 WIN_ReleaseWndPtr(wndPtr);
693 }
694
695
696 /***********************************************************************
697 * SCROLL_HandleScrollEvent
698 *
699 * Handle a mouse or timer event for the scrollbar.
700 * 'pt' is the location of the mouse event in client (for SB_CTL) or
701 * windows coordinates.
702 */
703 void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt)
704 {
705 /* Previous mouse position for timer events */
706 static POINT prevPt;
707 /* Thumb position when tracking started. */
708 static UINT trackThumbPos;
709 /* Position in the scroll-bar of the last button-down event. */
710 static INT lastClickPos;
711 /* Position in the scroll-bar of the last mouse event. */
712 static INT lastMousePos;
713
714 enum SCROLL_HITTEST hittest;
715 HWND hwndOwner, hwndCtl;
716 BOOL vertical;
717 INT arrowSize, thumbSize, thumbPos;
718 RECT rect;
719 HDC hdc;
720
721 SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar );
722 if (!infoPtr) return;
723 if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN))
724 return;
725
726 hdc = GetDCEx( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
727 vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
728 &arrowSize, &thumbSize, &thumbPos );
729 hwndOwner = (nBar == SB_CTL) ? GetParent(hwnd) : hwnd;
730 hwndCtl = (nBar == SB_CTL) ? hwnd : 0;
731
732 switch(msg)
733 {
734 case WM_LBUTTONDOWN: /* Initialise mouse tracking */
735 SCROLL_trackVertical = vertical;
736 SCROLL_trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
737 lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
738 lastMousePos = lastClickPos;
739 trackThumbPos = thumbPos;
740 prevPt = pt;
741 SetCapture( hwnd );
742 if (nBar == SB_CTL) SetFocus( hwnd );
743 break;
744
745 case WM_MOUSEMOVE:
746 hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE );
747 prevPt = pt;
748 break;
749
750 case WM_LBUTTONUP:
751 hittest = SCROLL_NOWHERE;
752 ReleaseCapture();
753 break;
754
755 case WM_SYSTIMER:
756 pt = prevPt;
757 hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE );
758 break;
759
760 default:
761 return; /* Should never happen */
762 }
763
764 TRACE("Event: hwnd=%04x bar=%d msg=%x pt=%ld,%ld hit=%d\n",
765 hwnd, nBar, msg, pt.x, pt.y, hittest );
766
767 switch(SCROLL_trackHitTest)
768 {
769 case SCROLL_NOWHERE: /* No tracking in progress */
770 break;
771
772 case SCROLL_TOP_ARROW:
773 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
774 (hittest == SCROLL_trackHitTest), FALSE );
775 if (hittest == SCROLL_trackHitTest)
776 {
777 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
778 {
779 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
780 SB_LINEUP, hwndCtl );
781 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
782 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
783 (TIMERPROC)0 );
784 }
785 }
786 else KillSystemTimer( hwnd, SCROLL_TIMER );
787 break;
788
789 case SCROLL_TOP_RECT:
790 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
791 thumbPos, infoPtr->flags, vertical,
792 (hittest == SCROLL_trackHitTest), FALSE );
793 if (hittest == SCROLL_trackHitTest)
794 {
795 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
796 {
797 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
798 SB_PAGEUP, hwndCtl );
799 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
800 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
801 (TIMERPROC)0 );
802 }
803 }
804 else KillSystemTimer( hwnd, SCROLL_TIMER );
805 break;
806
807 case SCROLL_THUMB:
808 if (msg == WM_LBUTTONDOWN)
809 {
810 SCROLL_TrackingWin = hwnd;
811 SCROLL_TrackingBar = nBar;
812 SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos;
813 if (!SCROLL_MovingThumb)
814 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
815 }
816 else if (msg == WM_LBUTTONUP)
817 {
818 if (SCROLL_MovingThumb)
819 SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize);
820 SCROLL_TrackingWin = 0;
821 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
822 thumbPos, infoPtr->flags, vertical,
823 FALSE, FALSE );
824 }
825 else /* WM_MOUSEMOVE */
826 {
827 UINT pos;
828
829 if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos;
830 else
831 {
832 pt = SCROLL_ClipPos( &rect, pt );
833 pos = vertical ? (pt.y - rect.top) : (pt.x - rect.left);
834 }
835 if ( (pos != lastMousePos) || (!SCROLL_MovingThumb) )
836 {
837 if (SCROLL_MovingThumb)
838 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
839 arrowSize, thumbSize );
840 lastMousePos = pos;
841 SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos;
842 SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
843 vertical,
844 SCROLL_TrackingPos );
845 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
846 MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal),
847 hwndCtl );
848 if (!SCROLL_MovingThumb)
849 SCROLL_DrawMovingThumb( hdc, &rect, vertical,
850 arrowSize, thumbSize );
851 }
852 }
853 break;
854
855 case SCROLL_BOTTOM_RECT:
856 SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
857 thumbPos, infoPtr->flags, vertical,
858 FALSE, (hittest == SCROLL_trackHitTest) );
859 if (hittest == SCROLL_trackHitTest)
860 {
861 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
862 {
863 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
864 SB_PAGEDOWN, hwndCtl );
865 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
866 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
867 (TIMERPROC)0 );
868 }
869 }
870 else KillSystemTimer( hwnd, SCROLL_TIMER );
871 break;
872
873 case SCROLL_BOTTOM_ARROW:
874 SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
875 FALSE, (hittest == SCROLL_trackHitTest) );
876 if (hittest == SCROLL_trackHitTest)
877 {
878 if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER))
879 {
880 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
881 SB_LINEDOWN, hwndCtl );
882 SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ?
883 SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY,
884 (TIMERPROC)0 );
885 }
886 }
887 else KillSystemTimer( hwnd, SCROLL_TIMER );
888 break;
889 }
890
891 if (msg == WM_LBUTTONUP)
892 {
893 hittest = SCROLL_trackHitTest;
894 SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */
895
896 if (hittest == SCROLL_THUMB)
897 {
898 UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
899 trackThumbPos + lastMousePos - lastClickPos );
900 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
901 MAKEWPARAM( SB_THUMBPOSITION, val ), hwndCtl );
902 }
903 else
904 SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
905 SB_ENDSCROLL, hwndCtl );
906 }
907
908 ReleaseDC( hwnd, hdc );
909 }
910
911
912 /***********************************************************************
913 * ScrollBarWndProc
914 */
915 LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam,
916 LPARAM lParam )
917 {
918 switch(message)
919 {
920 case WM_CREATE:
921 {
922 CREATESTRUCTA *lpCreat = (CREATESTRUCTA *)lParam;
923 if (lpCreat->style & SBS_SIZEBOX)
924 {
925 FIXME("Unimplemented style SBS_SIZEBOX.\n" );
926 return 0;
927 }
928
929 if (lpCreat->style & SBS_VERT)
930 {
931 if (lpCreat->style & SBS_LEFTALIGN)
932 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
933 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
934 else if (lpCreat->style & SBS_RIGHTALIGN)
935 MoveWindow( hwnd,
936 lpCreat->x+lpCreat->cx-GetSystemMetrics(SM_CXVSCROLL)-1,
937 lpCreat->y,
938 GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE );
939 }
940 else /* SBS_HORZ */
941 {
942 if (lpCreat->style & SBS_TOPALIGN)
943 MoveWindow( hwnd, lpCreat->x, lpCreat->y,
944 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
945 else if (lpCreat->style & SBS_BOTTOMALIGN)
946 MoveWindow( hwnd,
947 lpCreat->x,
948 lpCreat->y+lpCreat->cy-GetSystemMetrics(SM_CYHSCROLL)-1,
949 lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
950 }
951 }
952 if (!hUpArrow) SCROLL_LoadBitmaps();
953 TRACE("ScrollBar creation, hwnd=%04x\n", hwnd );
954 return 0;
955
956 case WM_LBUTTONDOWN:
957 case WM_LBUTTONUP:
958 case WM_MOUSEMOVE:
959 case WM_SYSTIMER:
960 {
961 POINT pt;
962 CONV_POINT16TO32( (POINT16 *)&lParam, &pt );
963 SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt );
964 }
965 break;
966
967 case WM_KEYDOWN:
968 SCROLL_HandleKbdEvent( hwnd, wParam );
969 break;
970
971 case WM_ERASEBKGND:
972 return 1;
973
974 case WM_GETDLGCODE:
975 return DLGC_WANTARROWS; /* Windows returns this value */
976
977 case WM_PAINT:
978 {
979 PAINTSTRUCT ps;
980 HDC hdc = BeginPaint( hwnd, &ps );
981 SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE );
982 EndPaint( hwnd, &ps );
983 }
984 break;
985
986 case SBM_SETPOS16:
987 case SBM_SETPOS:
988 return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam );
989
990 case SBM_GETPOS16:
991 case SBM_GETPOS:
992 return GetScrollPos( hwnd, SB_CTL );
993
994 case SBM_SETRANGE16:
995 SetScrollRange( hwnd, SB_CTL, LOWORD(lParam), HIWORD(lParam),
996 wParam /* FIXME: Is this correct? */ );
997 return 0;
998
999 case SBM_SETRANGE:
1000 SetScrollRange( hwnd, SB_CTL, wParam, lParam, FALSE );
1001 return 0; /* FIXME: return previous position */
1002
1003 case SBM_GETRANGE16:
1004 FIXME("don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n", wParam, lParam );
1005 return 0;
1006
1007 case SBM_GETRANGE:
1008 GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam );
1009 return 0;
1010
1011 case SBM_ENABLE_ARROWS16:
1012 case SBM_ENABLE_ARROWS:
1013 return EnableScrollBar( hwnd, SB_CTL, wParam );
1014
1015 case SBM_SETRANGEREDRAW:
1016 SetScrollRange( hwnd, SB_CTL, wParam, lParam, TRUE );
1017 return 0; /* FIXME: return previous position */
1018
1019 case SBM_SETSCROLLINFO:
1020 return SetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
1021
1022 case SBM_GETSCROLLINFO:
1023 return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam );
1024
1025 case 0x00e5:
1026 case 0x00e7:
1027 case 0x00e8:
1028 case 0x00eb:
1029 case 0x00ec:
1030 case 0x00ed:
1031 case 0x00ee:
1032 case 0x00ef:
1033 ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n",
1034 message, wParam, lParam );
1035 break;
1036
1037 default:
1038 if (message >= WM_USER)
1039 WARN("unknown msg %04x wp=%04x lp=%08lx\n",
1040 message, wParam, lParam );
1041 return DefWindowProcA( hwnd, message, wParam, lParam );
1042 }
1043 return 0;
1044 }
1045
1046
1047 /*************************************************************************
1048 * SetScrollInfo16 (USER.475)
1049 */
1050 INT16 WINAPI SetScrollInfo16( HWND16 hwnd, INT16 nBar, const SCROLLINFO *info,
1051 BOOL16 bRedraw )
1052 {
1053 return (INT16)SetScrollInfo( hwnd, nBar, info, bRedraw );
1054 }
1055
1056
1057 /*************************************************************************
1058 * SetScrollInfo32 (USER32.501)
1059 * SetScrollInfo32 can be used to set the position, upper bound,
1060 * lower bound, and page size of a scrollbar control.
1061 *
1062 * RETURNS
1063 * Scrollbar position
1064 *
1065 * NOTE
1066 * For 100 lines of text to be displayed in a window of 25 lines,
1067 * one would for instance use info->nMin=0, info->nMax=75
1068 * (corresponding to the 76 different positions of the window on
1069 * the text), and info->nPage=25.
1070 */
1071 INT WINAPI SetScrollInfo(
1072 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1073 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1074 const SCROLLINFO *info /* [I] Specifies what to change and new values */,
1075 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1076 {
1077 INT action;
1078 INT retVal = SCROLL_SetScrollInfo( hwnd, nBar, info, &action );
1079
1080 if( action & SA_SSI_HIDE )
1081 SCROLL_ShowScrollBar( hwnd, nBar, FALSE, FALSE );
1082 else
1083 {
1084 if( action & SA_SSI_SHOW )
1085 if( SCROLL_ShowScrollBar( hwnd, nBar, TRUE, TRUE ) )
1086 return retVal; /* SetWindowPos() already did the painting */
1087
1088 if( bRedraw && (action & SA_SSI_REFRESH))
1089 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1090 else if( action & SA_SSI_REPAINT_ARROWS )
1091 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, FALSE );
1092 }
1093 return retVal;
1094 }
1095
1096 INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
1097 const SCROLLINFO *info, INT *action )
1098 {
1099 /* Update the scrollbar state and set action flags according to
1100 * what has to be done graphics wise. */
1101
1102 SCROLLBAR_INFO *infoPtr;
1103 UINT new_flags;
1104
1105 dbg_decl_str(scroll, 256);
1106
1107 *action = 0;
1108
1109 if (!(infoPtr = SCROLL_GetScrollInfo(hwnd, nBar))) return 0;
1110 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0;
1111 if ((info->cbSize != sizeof(*info)) &&
1112 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0;
1113
1114 /* Set the page size */
1115
1116 if (info->fMask & SIF_PAGE)
1117 {
1118 dsprintf(scroll, " page=%d", info->nPage );
1119 if( infoPtr->Page != info->nPage )
1120 {
1121 infoPtr->Page = info->nPage;
1122 *action |= SA_SSI_REFRESH;
1123 }
1124 }
1125
1126 /* Set the scroll pos */
1127
1128 if (info->fMask & SIF_POS)
1129 {
1130 dsprintf(scroll, " pos=%d", info->nPos );
1131 if( infoPtr->CurVal != info->nPos )
1132 {
1133 infoPtr->CurVal = info->nPos;
1134 *action |= SA_SSI_REFRESH;
1135 }
1136 }
1137
1138 /* Set the scroll range */
1139
1140 if (info->fMask & SIF_RANGE)
1141 {
1142 dsprintf(scroll, " min=%d max=%d", info->nMin, info->nMax );
1143
1144 /* Invalid range -> range is set to (0,0) */
1145 if ((info->nMin > info->nMax) ||
1146 ((UINT)(info->nMax - info->nMin) >= 0x80000000))
1147 {
1148 infoPtr->MinVal = 0;
1149 infoPtr->MaxVal = 0;
1150 }
1151 else
1152 {
1153 if( infoPtr->MinVal != info->nMin ||
1154 infoPtr->MaxVal != info->nMax )
1155 {
1156 *action |= SA_SSI_REFRESH;
1157 infoPtr->MinVal = info->nMin;
1158 infoPtr->MaxVal = info->nMax;
1159 }
1160 }
1161 }
1162
1163 TRACE("hwnd=%04x bar=%d %s\n",
1164 hwnd, nBar, dbg_str(scroll));
1165
1166 /* Make sure the page size is valid */
1167
1168 if (infoPtr->Page < 0) infoPtr->Page = 0;
1169 else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 )
1170 infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1;
1171
1172 /* Make sure the pos is inside the range */
1173
1174 if (infoPtr->CurVal < infoPtr->MinVal)
1175 infoPtr->CurVal = infoPtr->MinVal;
1176 else if (infoPtr->CurVal > infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1177 infoPtr->CurVal = infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 );
1178
1179 TRACE(" new values: page=%d pos=%d min=%d max=%d\n",
1180 infoPtr->Page, infoPtr->CurVal,
1181 infoPtr->MinVal, infoPtr->MaxVal );
1182
1183 /* Check if the scrollbar should be hidden or disabled */
1184
1185 if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL))
1186 {
1187 new_flags = infoPtr->flags;
1188 if (infoPtr->MinVal >= infoPtr->MaxVal - MAX( infoPtr->Page-1, 0 ))
1189 {
1190 /* Hide or disable scroll-bar */
1191 if (info->fMask & SIF_DISABLENOSCROLL)
1192 {
1193 new_flags = ESB_DISABLE_BOTH;
1194 *action |= SA_SSI_REFRESH;
1195 }
1196 else if (nBar != SB_CTL)
1197 {
1198 *action = SA_SSI_HIDE;
1199 goto done;
1200 }
1201 }
1202 else /* Show and enable scroll-bar */
1203 {
1204 new_flags = 0;
1205 if (nBar != SB_CTL)
1206 *action |= SA_SSI_SHOW;
1207 }
1208
1209 if (infoPtr->flags != new_flags) /* check arrow flags */
1210 {
1211 infoPtr->flags = new_flags;
1212 *action |= SA_SSI_REPAINT_ARROWS;
1213 }
1214 }
1215
1216 done:
1217 /* Return current position */
1218
1219 return infoPtr->CurVal;
1220 }
1221
1222
1223 /*************************************************************************
1224 * GetScrollInfo16 (USER.476)
1225 */
1226 BOOL16 WINAPI GetScrollInfo16( HWND16 hwnd, INT16 nBar, LPSCROLLINFO info )
1227 {
1228 return GetScrollInfo( hwnd, nBar, info );
1229 }
1230
1231
1232 /*************************************************************************
1233 * GetScrollInfo32 (USER32.284)
1234 * GetScrollInfo32 can be used to retrieve the position, upper bound,
1235 * lower bound, and page size of a scrollbar control.
1236 *
1237 * RETURNS STD
1238 */
1239 BOOL WINAPI GetScrollInfo(
1240 HWND hwnd /* [I] Handle of window */ ,
1241 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1242 LPSCROLLINFO info /* [IO] (info.fMask [I] specifies which values are to retrieve) */)
1243 {
1244 SCROLLBAR_INFO *infoPtr;
1245
1246 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1247 if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE;
1248 if ((info->cbSize != sizeof(*info)) &&
1249 (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE;
1250
1251 if (info->fMask & SIF_PAGE) info->nPage = infoPtr->Page;
1252 if (info->fMask & SIF_POS) info->nPos = infoPtr->CurVal;
1253 if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info)))
1254 info->nTrackPos = (SCROLL_TrackingWin==hwnd) ? SCROLL_TrackingVal : infoPtr->CurVal;
1255 if (info->fMask & SIF_RANGE)
1256 {
1257 info->nMin = infoPtr->MinVal;
1258 info->nMax = infoPtr->MaxVal;
1259 }
1260 return (info->fMask & SIF_ALL) != 0;
1261 }
1262
1263
1264 /*************************************************************************
1265 * SetScrollPos16 (USER.62)
1266 */
1267 INT16 WINAPI SetScrollPos16( HWND16 hwnd, INT16 nBar, INT16 nPos,
1268 BOOL16 bRedraw )
1269 {
1270 return (INT16)SetScrollPos( hwnd, nBar, nPos, bRedraw );
1271 }
1272
1273
1274 /*************************************************************************
1275 * SetScrollPos32 (USER32.502)
1276 *
1277 * RETURNS
1278 * Success: Scrollbar position
1279 * Failure: 0
1280 *
1281 * REMARKS
1282 * Note the ambiguity when 0 is returned. Use GetLastError
1283 * to make sure there was an error (and to know which one).
1284 */
1285 INT WINAPI SetScrollPos(
1286 HWND hwnd /* [I] Handle of window whose scrollbar will be affected */,
1287 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */,
1288 INT nPos /* [I] New value */,
1289 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */ )
1290 {
1291 SCROLLINFO info;
1292 SCROLLBAR_INFO *infoPtr;
1293 INT oldPos;
1294
1295 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1296 oldPos = infoPtr->CurVal;
1297 info.cbSize = sizeof(info);
1298 info.nPos = nPos;
1299 info.fMask = SIF_POS;
1300 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1301 return oldPos;
1302 }
1303
1304
1305 /*************************************************************************
1306 * GetScrollPos16 (USER.63)
1307 */
1308 INT16 WINAPI GetScrollPos16( HWND16 hwnd, INT16 nBar )
1309 {
1310 return (INT16)GetScrollPos( hwnd, nBar );
1311 }
1312
1313
1314 /*************************************************************************
1315 * GetScrollPos32 (USER32.285)
1316 *
1317 * RETURNS
1318 * Success: Current position
1319 * Failure: 0
1320 *
1321 * REMARKS
1322 * Note the ambiguity when 0 is returned. Use GetLastError
1323 * to make sure there was an error (and to know which one).
1324 */
1325 INT WINAPI GetScrollPos(
1326 HWND hwnd, /* [I] Handle of window */
1327 INT nBar /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */)
1328 {
1329 SCROLLBAR_INFO *infoPtr;
1330
1331 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0;
1332 return infoPtr->CurVal;
1333 }
1334
1335
1336 /*************************************************************************
1337 * SetScrollRange16 (USER.64)
1338 */
1339 void WINAPI SetScrollRange16( HWND16 hwnd, INT16 nBar,
1340 INT16 MinVal, INT16 MaxVal, BOOL16 bRedraw )
1341 {
1342 /* Invalid range -> range is set to (0,0) */
1343 if ((INT)MaxVal - (INT)MinVal > 0x7fff) MinVal = MaxVal = 0;
1344 SetScrollRange( hwnd, nBar, MinVal, MaxVal, bRedraw );
1345 }
1346
1347
1348 /*************************************************************************
1349 * SetScrollRange32 (USER32.503)
1350 *
1351 * RETURNS STD
1352 */
1353 BOOL WINAPI SetScrollRange(
1354 HWND hwnd, /* [I] Handle of window whose scrollbar will be affected */
1355 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1356 INT MinVal, /* [I] New minimum value */
1357 INT MaxVal, /* [I] New maximum value */
1358 BOOL bRedraw /* [I] Should scrollbar be redrawn afterwards ? */)
1359 {
1360 SCROLLINFO info;
1361
1362 info.cbSize = sizeof(info);
1363 info.nMin = MinVal;
1364 info.nMax = MaxVal;
1365 info.fMask = SIF_RANGE;
1366 SetScrollInfo( hwnd, nBar, &info, bRedraw );
1367 return TRUE;
1368 }
1369
1370
1371 /*************************************************************************
1372 * SCROLL_SetNCSbState
1373 *
1374 * Updates both scrollbars at the same time. Used by MDI CalcChildScroll().
1375 */
1376 INT SCROLL_SetNCSbState(WND* wndPtr, int vMin, int vMax, int vPos,
1377 int hMin, int hMax, int hPos)
1378 {
1379 INT vA, hA;
1380 SCROLLINFO vInfo, hInfo;
1381
1382 vInfo.cbSize = hInfo.cbSize = sizeof(SCROLLINFO);
1383 vInfo.nMin = vMin; hInfo.nMin = hMin;
1384 vInfo.nMax = vMax; hInfo.nMax = hMax;
1385 vInfo.nPos = vPos; hInfo.nPos = hPos;
1386 vInfo.fMask = hInfo.fMask = SIF_RANGE | SIF_POS;
1387
1388 SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_VERT, &vInfo, &vA );
1389 SCROLL_SetScrollInfo( wndPtr->hwndSelf, SB_HORZ, &hInfo, &hA );
1390
1391 if( !SCROLL_ShowScrollBar( wndPtr->hwndSelf, SB_BOTH,
1392 (hA & SA_SSI_SHOW),(vA & SA_SSI_SHOW) ) )
1393 {
1394 /* SetWindowPos() wasn't called, just redraw the scrollbars if needed */
1395 if( vA & SA_SSI_REFRESH )
1396 SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_VERT, FALSE, TRUE );
1397
1398 if( hA & SA_SSI_REFRESH )
1399 SCROLL_RefreshScrollBar( wndPtr->hwndSelf, SB_HORZ, FALSE, TRUE );
1400 }
1401 return 0;
1402 }
1403
1404
1405 /*************************************************************************
1406 * GetScrollRange16 (USER.65)
1407 */
1408 BOOL16 WINAPI GetScrollRange16( HWND16 hwnd, INT16 nBar,
1409 LPINT16 lpMin, LPINT16 lpMax)
1410 {
1411 INT min, max;
1412 BOOL16 ret = GetScrollRange( hwnd, nBar, &min, &max );
1413 if (lpMin) *lpMin = min;
1414 if (lpMax) *lpMax = max;
1415 return ret;
1416 }
1417
1418
1419 /*************************************************************************
1420 * GetScrollRange32 (USER32.286)
1421 *
1422 * RETURNS STD
1423 */
1424 BOOL WINAPI GetScrollRange(
1425 HWND hwnd, /* [I] Handle of window */
1426 INT nBar, /* [I] One of SB_HORZ, SB_VERT, or SB_CTL */
1427 LPINT lpMin, /* [O] Where to store minimum value */
1428 LPINT lpMax /* [O] Where to store maximum value */)
1429 {
1430 SCROLLBAR_INFO *infoPtr;
1431
1432 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar )))
1433 {
1434 if (lpMin) lpMin = 0;
1435 if (lpMax) lpMax = 0;
1436 return FALSE;
1437 }
1438 if (lpMin) *lpMin = infoPtr->MinVal;
1439 if (lpMax) *lpMax = infoPtr->MaxVal;
1440 return TRUE;
1441 }
1442
1443
1444 /*************************************************************************
1445 * SCROLL_ShowScrollBar()
1446 *
1447 * Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
1448 * NOTE: fShowV/fShowH must be zero when nBar is SB_HORZ/SB_VERT.
1449 */
1450 BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
1451 BOOL fShowH, BOOL fShowV )
1452 {
1453 WND *wndPtr = WIN_FindWndPtr( hwnd );
1454 BOOL retvalue = FALSE;
1455
1456 if (!wndPtr) return FALSE;
1457 TRACE("hwnd=%04x bar=%d horz=%d, vert=%d\n",
1458 hwnd, nBar, fShowH, fShowV );
1459
1460 switch(nBar)
1461 {
1462 case SB_CTL:
1463 ShowWindow( hwnd, fShowH ? SW_SHOW : SW_HIDE );
1464 retvalue = TRUE;
1465 goto END;
1466
1467 case SB_BOTH:
1468 case SB_HORZ:
1469 if (fShowH)
1470 {
1471 fShowH = !(wndPtr->dwStyle & WS_HSCROLL);
1472 wndPtr->dwStyle |= WS_HSCROLL;
1473 }
1474 else /* hide it */
1475 {
1476 fShowH = (wndPtr->dwStyle & WS_HSCROLL);
1477 wndPtr->dwStyle &= ~WS_HSCROLL;
1478 }
1479 if( nBar == SB_HORZ ) break;
1480 /* fall through */
1481
1482 case SB_VERT:
1483 if (fShowV)
1484 {
1485 fShowV = !(wndPtr->dwStyle & WS_VSCROLL);
1486 wndPtr->dwStyle |= WS_VSCROLL;
1487 }
1488 else /* hide it */
1489 {
1490 fShowV = (wndPtr->dwStyle & WS_VSCROLL);
1491 wndPtr->dwStyle &= ~WS_VSCROLL;
1492 }
1493 break;
1494
1495 default:
1496 retvalue = FALSE; /* Nothing to do! */
1497 goto END;
1498 }
1499
1500 if( fShowH || fShowV ) /* frame has been changed, let the window redraw itself */
1501 {
1502 SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE
1503 | SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED );
1504 retvalue = TRUE;
1505 goto END;
1506 }
1507
1508 retvalue = FALSE; /* no frame changes */
1509 END:
1510 WIN_ReleaseWndPtr(wndPtr);
1511 return retvalue;
1512 }
1513
1514
1515 /*************************************************************************
1516 * ShowScrollBar16 (USER.267)
1517 */
1518 void WINAPI ShowScrollBar16( HWND16 hwnd, INT16 nBar, BOOL16 fShow )
1519 {
1520 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1521 (nBar == SB_HORZ) ? 0 : fShow );
1522 }
1523
1524
1525 /*************************************************************************
1526 * ShowScrollBar32 (USER32.532)
1527 *
1528 * RETURNS STD
1529 */
1530 BOOL WINAPI ShowScrollBar(
1531 HWND hwnd, /* [I] Handle of window whose scrollbar(s) will be affected */
1532 INT nBar, /* [I] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */
1533 BOOL fShow /* [I] TRUE = show, FALSE = hide */)
1534 {
1535 SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
1536 (nBar == SB_HORZ) ? 0 : fShow );
1537 return TRUE;
1538 }
1539
1540
1541 /*************************************************************************
1542 * EnableScrollBar16 (USER.482)
1543 */
1544 BOOL16 WINAPI EnableScrollBar16( HWND16 hwnd, INT16 nBar, UINT16 flags )
1545 {
1546 return EnableScrollBar( hwnd, nBar, flags );
1547 }
1548
1549
1550 /*************************************************************************
1551 * EnableScrollBar32 (USER32.171)
1552 */
1553 BOOL WINAPI EnableScrollBar( HWND hwnd, INT nBar, UINT flags )
1554 {
1555 BOOL bFineWithMe;
1556 SCROLLBAR_INFO *infoPtr;
1557
1558 TRACE("%04x %d %d\n", hwnd, nBar, flags );
1559
1560 flags &= ESB_DISABLE_BOTH;
1561
1562 if (nBar == SB_BOTH)
1563 {
1564 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, SB_VERT ))) return FALSE;
1565 if (!(bFineWithMe = (infoPtr->flags == flags)) )
1566 {
1567 infoPtr->flags = flags;
1568 SCROLL_RefreshScrollBar( hwnd, SB_VERT, TRUE, TRUE );
1569 }
1570 nBar = SB_HORZ;
1571 }
1572 else
1573 bFineWithMe = TRUE;
1574
1575 if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE;
1576 if (bFineWithMe && infoPtr->flags == flags) return FALSE;
1577 infoPtr->flags = flags;
1578
1579 SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
1580 return TRUE;
1581 }
DirectPlay implementation for GSoC