1 /*
2 * Pager control
3 *
4 * Copyright 1998, 1999 Eric Kohl
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 *
20 * NOTES
21 *
22 * This code was audited for completeness against the documented features
23 * of Comctl32.dll version 6.0 on Sep. 18, 2004, by Robert Shearman.
24 *
25 * Unless otherwise noted, we believe this code to be complete, as per
26 * the specification mentioned above.
27 * If you discover missing features or bugs please note them below.
28 *
29 * TODO:
30 * Implement repetitive button press.
31 * Adjust arrow size relative to size of button.
32 * Allow border size changes.
33 * Styles:
34 * PGS_DRAGNDROP
35 * Notifications:
36 * PGN_HOTITEMCHANGE
37 * Messages:
38 * WM_PRINT and/or WM_PRINTCLIENT
39 *
40 * TESTING:
41 * Tested primarily with the controlspy Pager application.
42 * Susan Farley (susan@codeweavers.com)
43 *
44 * IMPLEMENTATION NOTES:
45 * This control uses WM_NCPAINT instead of WM_PAINT to paint itself
46 * as we need to scroll a child window. In order to do this we move
47 * the child window in the control's client area, using the clipping
48 * region that is automatically set around the client area. As the
49 * entire client area now consists of the child window, we must
50 * allocate space (WM_NCCALCSIZE) for the buttons and draw them as
51 * a non-client area (WM_NCPAINT).
52 * Robert Shearman <rob@codeweavers.com>
53 */
54
55 #include <stdarg.h>
56 #include <string.h>
57 #include "windef.h"
58 #include "winbase.h"
59 #include "wingdi.h"
60 #include "winuser.h"
61 #include "winnls.h"
62 #include "commctrl.h"
63 #include "comctl32.h"
64 #include "wine/debug.h"
65
66 WINE_DEFAULT_DEBUG_CHANNEL(pager);
67
68 typedef struct
69 {
70 HWND hwndSelf; /* handle of the control wnd */
71 HWND hwndChild; /* handle of the contained wnd */
72 HWND hwndNotify; /* handle of the parent wnd */
73 DWORD dwStyle; /* styles for this control */
74 COLORREF clrBk; /* background color */
75 INT nBorder; /* border size for the control */
76 INT nButtonSize;/* size of the pager btns */
77 INT nPos; /* scroll position */
78 INT nWidth; /* from child wnd's response to PGN_CALCSIZE */
79 INT nHeight; /* from child wnd's response to PGN_CALCSIZE */
80 BOOL bForward; /* forward WM_MOUSEMOVE msgs to the contained wnd */
81 BOOL bCapture; /* we have captured the mouse */
82 INT TLbtnState; /* state of top or left btn */
83 INT BRbtnState; /* state of bottom or right btn */
84 INT direction; /* direction of the scroll, (e.g. PGF_SCROLLUP) */
85 } PAGER_INFO;
86
87 #define MIN_ARROW_WIDTH 8
88 #define MIN_ARROW_HEIGHT 5
89
90 #define TIMERID1 1
91 #define TIMERID2 2
92 #define INITIAL_DELAY 500
93 #define REPEAT_DELAY 50
94
95 static void
96 PAGER_GetButtonRects(const PAGER_INFO* infoPtr, RECT* prcTopLeft, RECT* prcBottomRight, BOOL bClientCoords)
97 {
98 RECT rcWindow;
99 GetWindowRect (infoPtr->hwndSelf, &rcWindow);
100
101 if (bClientCoords)
102 {
103 POINT pt = {rcWindow.left, rcWindow.top};
104 ScreenToClient(infoPtr->hwndSelf, &pt);
105 OffsetRect(&rcWindow, -(rcWindow.left-pt.x), -(rcWindow.top-pt.y));
106 }
107 else
108 OffsetRect(&rcWindow, -rcWindow.left, -rcWindow.top);
109
110 *prcTopLeft = *prcBottomRight = rcWindow;
111 if (infoPtr->dwStyle & PGS_HORZ)
112 {
113 prcTopLeft->right = prcTopLeft->left + infoPtr->nButtonSize;
114 prcBottomRight->left = prcBottomRight->right - infoPtr->nButtonSize;
115 }
116 else
117 {
118 prcTopLeft->bottom = prcTopLeft->top + infoPtr->nButtonSize;
119 prcBottomRight->top = prcBottomRight->bottom - infoPtr->nButtonSize;
120 }
121 }
122
123 /* the horizontal arrows are:
124 *
125 * 01234 01234
126 * 1 * *
127 * 2 ** **
128 * 3*** ***
129 * 4*** ***
130 * 5 ** **
131 * 6 * *
132 * 7
133 *
134 */
135 static void
136 PAGER_DrawHorzArrow (HDC hdc, RECT r, INT colorRef, BOOL left)
137 {
138 INT x, y, w, h;
139 HPEN hPen, hOldPen;
140
141 w = r.right - r.left + 1;
142 h = r.bottom - r.top + 1;
143 if ((h < MIN_ARROW_WIDTH) || (w < MIN_ARROW_HEIGHT))
144 return; /* refuse to draw partial arrow */
145
146 if (!(hPen = CreatePen( PS_SOLID, 1, GetSysColor( colorRef )))) return;
147 hOldPen = SelectObject ( hdc, hPen );
148 if (left)
149 {
150 x = r.left + ((w - MIN_ARROW_HEIGHT) / 2) + 3;
151 y = r.top + ((h - MIN_ARROW_WIDTH) / 2) + 1;
152 MoveToEx (hdc, x, y, NULL);
153 LineTo (hdc, x--, y+5); y++;
154 MoveToEx (hdc, x, y, NULL);
155 LineTo (hdc, x--, y+3); y++;
156 MoveToEx (hdc, x, y, NULL);
157 LineTo (hdc, x, y+1);
158 }
159 else
160 {
161 x = r.left + ((w - MIN_ARROW_HEIGHT) / 2) + 1;
162 y = r.top + ((h - MIN_ARROW_WIDTH) / 2) + 1;
163 MoveToEx (hdc, x, y, NULL);
164 LineTo (hdc, x++, y+5); y++;
165 MoveToEx (hdc, x, y, NULL);
166 LineTo (hdc, x++, y+3); y++;
167 MoveToEx (hdc, x, y, NULL);
168 LineTo (hdc, x, y+1);
169 }
170
171 SelectObject( hdc, hOldPen );
172 DeleteObject( hPen );
173 }
174
175 /* the vertical arrows are:
176 *
177 * 01234567 01234567
178 * 1****** **
179 * 2 **** ****
180 * 3 ** ******
181 * 4
182 *
183 */
184 static void
185 PAGER_DrawVertArrow (HDC hdc, RECT r, INT colorRef, BOOL up)
186 {
187 INT x, y, w, h;
188 HPEN hPen, hOldPen;
189
190 w = r.right - r.left + 1;
191 h = r.bottom - r.top + 1;
192 if ((h < MIN_ARROW_WIDTH) || (w < MIN_ARROW_HEIGHT))
193 return; /* refuse to draw partial arrow */
194
195 if (!(hPen = CreatePen( PS_SOLID, 1, GetSysColor( colorRef )))) return;
196 hOldPen = SelectObject ( hdc, hPen );
197 if (up)
198 {
199 x = r.left + ((w - MIN_ARROW_HEIGHT) / 2) + 1;
200 y = r.top + ((h - MIN_ARROW_WIDTH) / 2) + 3;
201 MoveToEx (hdc, x, y, NULL);
202 LineTo (hdc, x+5, y--); x++;
203 MoveToEx (hdc, x, y, NULL);
204 LineTo (hdc, x+3, y--); x++;
205 MoveToEx (hdc, x, y, NULL);
206 LineTo (hdc, x+1, y);
207 }
208 else
209 {
210 x = r.left + ((w - MIN_ARROW_HEIGHT) / 2) + 1;
211 y = r.top + ((h - MIN_ARROW_WIDTH) / 2) + 1;
212 MoveToEx (hdc, x, y, NULL);
213 LineTo (hdc, x+5, y++); x++;
214 MoveToEx (hdc, x, y, NULL);
215 LineTo (hdc, x+3, y++); x++;
216 MoveToEx (hdc, x, y, NULL);
217 LineTo (hdc, x+1, y);
218 }
219
220 SelectObject( hdc, hOldPen );
221 DeleteObject( hPen );
222 }
223
224 static void
225 PAGER_DrawButton(HDC hdc, COLORREF clrBk, RECT arrowRect,
226 BOOL horz, BOOL topLeft, INT btnState)
227 {
228 HBRUSH hBrush, hOldBrush;
229 RECT rc = arrowRect;
230
231 TRACE("arrowRect = %s, btnState = %d\n", wine_dbgstr_rect(&arrowRect), btnState);
232
233 if (btnState == PGF_INVISIBLE)
234 return;
235
236 if ((rc.right - rc.left <= 0) || (rc.bottom - rc.top <= 0))
237 return;
238
239 hBrush = CreateSolidBrush(clrBk);
240 hOldBrush = (HBRUSH)SelectObject(hdc, hBrush);
241
242 FillRect(hdc, &rc, hBrush);
243
244 if (btnState == PGF_HOT)
245 {
246 DrawEdge( hdc, &rc, BDR_RAISEDINNER, BF_RECT);
247 if (horz)
248 PAGER_DrawHorzArrow(hdc, rc, COLOR_WINDOWFRAME, topLeft);
249 else
250 PAGER_DrawVertArrow(hdc, rc, COLOR_WINDOWFRAME, topLeft);
251 }
252 else if (btnState == PGF_NORMAL)
253 {
254 DrawEdge (hdc, &rc, BDR_OUTER, BF_FLAT);
255 if (horz)
256 PAGER_DrawHorzArrow(hdc, rc, COLOR_WINDOWFRAME, topLeft);
257 else
258 PAGER_DrawVertArrow(hdc, rc, COLOR_WINDOWFRAME, topLeft);
259 }
260 else if (btnState == PGF_DEPRESSED)
261 {
262 DrawEdge( hdc, &rc, BDR_SUNKENOUTER, BF_RECT);
263 if (horz)
264 PAGER_DrawHorzArrow(hdc, rc, COLOR_WINDOWFRAME, topLeft);
265 else
266 PAGER_DrawVertArrow(hdc, rc, COLOR_WINDOWFRAME, topLeft);
267 }
268 else if (btnState == PGF_GRAYED)
269 {
270 DrawEdge (hdc, &rc, BDR_OUTER, BF_FLAT);
271 if (horz)
272 {
273 PAGER_DrawHorzArrow(hdc, rc, COLOR_3DHIGHLIGHT, topLeft);
274 rc.left++, rc.top++; rc.right++, rc.bottom++;
275 PAGER_DrawHorzArrow(hdc, rc, COLOR_3DSHADOW, topLeft);
276 }
277 else
278 {
279 PAGER_DrawVertArrow(hdc, rc, COLOR_3DHIGHLIGHT, topLeft);
280 rc.left++, rc.top++; rc.right++, rc.bottom++;
281 PAGER_DrawVertArrow(hdc, rc, COLOR_3DSHADOW, topLeft);
282 }
283 }
284
285 SelectObject( hdc, hOldBrush );
286 DeleteObject(hBrush);
287 }
288
289 /* << PAGER_GetDropTarget >> */
290
291 static inline LRESULT
292 PAGER_ForwardMouse (PAGER_INFO* infoPtr, BOOL bFwd)
293 {
294 TRACE("[%p]\n", infoPtr->hwndSelf);
295
296 infoPtr->bForward = bFwd;
297
298 return 0;
299 }
300
301 static inline LRESULT
302 PAGER_GetButtonState (const PAGER_INFO* infoPtr, INT btn)
303 {
304 LRESULT btnState = PGF_INVISIBLE;
305 TRACE("[%p]\n", infoPtr->hwndSelf);
306
307 if (btn == PGB_TOPORLEFT)
308 btnState = infoPtr->TLbtnState;
309 else if (btn == PGB_BOTTOMORRIGHT)
310 btnState = infoPtr->BRbtnState;
311
312 return btnState;
313 }
314
315
316 static inline INT
317 PAGER_GetPos(const PAGER_INFO *infoPtr)
318 {
319 TRACE("[%p] returns %d\n", infoPtr->hwndSelf, infoPtr->nPos);
320 return infoPtr->nPos;
321 }
322
323 static inline INT
324 PAGER_GetButtonSize(const PAGER_INFO *infoPtr)
325 {
326 TRACE("[%p] returns %d\n", infoPtr->hwndSelf, infoPtr->nButtonSize);
327 return infoPtr->nButtonSize;
328 }
329
330 static inline INT
331 PAGER_GetBorder(const PAGER_INFO *infoPtr)
332 {
333 TRACE("[%p] returns %d\n", infoPtr->hwndSelf, infoPtr->nBorder);
334 return infoPtr->nBorder;
335 }
336
337 static inline COLORREF
338 PAGER_GetBkColor(const PAGER_INFO *infoPtr)
339 {
340 TRACE("[%p] returns %06x\n", infoPtr->hwndSelf, infoPtr->clrBk);
341 return infoPtr->clrBk;
342 }
343
344 static void
345 PAGER_CalcSize (const PAGER_INFO *infoPtr, INT* size, BOOL getWidth)
346 {
347 NMPGCALCSIZE nmpgcs;
348 ZeroMemory (&nmpgcs, sizeof (NMPGCALCSIZE));
349 nmpgcs.hdr.hwndFrom = infoPtr->hwndSelf;
350 nmpgcs.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
351 nmpgcs.hdr.code = PGN_CALCSIZE;
352 nmpgcs.dwFlag = getWidth ? PGF_CALCWIDTH : PGF_CALCHEIGHT;
353 nmpgcs.iWidth = getWidth ? *size : 0;
354 nmpgcs.iHeight = getWidth ? 0 : *size;
355 SendMessageW (infoPtr->hwndNotify, WM_NOTIFY, nmpgcs.hdr.idFrom, (LPARAM)&nmpgcs);
356
357 *size = getWidth ? nmpgcs.iWidth : nmpgcs.iHeight;
358
359 TRACE("[%p] PGN_CALCSIZE returns %s=%d\n", infoPtr->hwndSelf,
360 getWidth ? "width" : "height", *size);
361 }
362
363 static void
364 PAGER_PositionChildWnd(PAGER_INFO* infoPtr)
365 {
366 if (infoPtr->hwndChild)
367 {
368 RECT rcClient;
369 int nPos = infoPtr->nPos;
370
371 /* compensate for a grayed btn, which will soon become invisible */
372 if (infoPtr->TLbtnState == PGF_GRAYED)
373 nPos += infoPtr->nButtonSize;
374
375 GetClientRect(infoPtr->hwndSelf, &rcClient);
376
377 if (infoPtr->dwStyle & PGS_HORZ)
378 {
379 int wndSize = max(0, rcClient.right - rcClient.left);
380 if (infoPtr->nWidth < wndSize)
381 infoPtr->nWidth = wndSize;
382
383 TRACE("[%p] SWP %dx%d at (%d,%d)\n", infoPtr->hwndSelf,
384 infoPtr->nWidth, infoPtr->nHeight,
385 -nPos, 0);
386 SetWindowPos(infoPtr->hwndChild, 0,
387 -nPos, 0,
388 infoPtr->nWidth, infoPtr->nHeight,
389 SWP_NOZORDER);
390 }
391 else
392 {
393 int wndSize = max(0, rcClient.bottom - rcClient.top);
394 if (infoPtr->nHeight < wndSize)
395 infoPtr->nHeight = wndSize;
396
397 TRACE("[%p] SWP %dx%d at (%d,%d)\n", infoPtr->hwndSelf,
398 infoPtr->nWidth, infoPtr->nHeight,
399 0, -nPos);
400 SetWindowPos(infoPtr->hwndChild, 0,
401 0, -nPos,
402 infoPtr->nWidth, infoPtr->nHeight,
403 SWP_NOZORDER);
404 }
405
406 InvalidateRect(infoPtr->hwndChild, NULL, TRUE);
407 }
408 }
409
410 static INT
411 PAGER_GetScrollRange(PAGER_INFO* infoPtr)
412 {
413 INT scrollRange = 0;
414
415 if (infoPtr->hwndChild)
416 {
417 INT wndSize, childSize;
418 RECT wndRect;
419 GetWindowRect(infoPtr->hwndSelf, &wndRect);
420
421 if (infoPtr->dwStyle & PGS_HORZ)
422 {
423 wndSize = wndRect.right - wndRect.left;
424 PAGER_CalcSize(infoPtr, &infoPtr->nWidth, TRUE);
425 childSize = infoPtr->nWidth;
426 }
427 else
428 {
429 wndSize = wndRect.bottom - wndRect.top;
430 PAGER_CalcSize(infoPtr, &infoPtr->nHeight, FALSE);
431 childSize = infoPtr->nHeight;
432 }
433
434 TRACE("childSize = %d, wndSize = %d\n", childSize, wndSize);
435 if (childSize > wndSize)
436 scrollRange = childSize - wndSize + infoPtr->nButtonSize;
437 }
438
439 TRACE("[%p] returns %d\n", infoPtr->hwndSelf, scrollRange);
440 return scrollRange;
441 }
442
443 static void
444 PAGER_UpdateBtns(PAGER_INFO *infoPtr, INT scrollRange, BOOL hideGrayBtns)
445 {
446 BOOL resizeClient;
447 BOOL repaintBtns;
448 INT oldTLbtnState = infoPtr->TLbtnState;
449 INT oldBRbtnState = infoPtr->BRbtnState;
450 POINT pt;
451 RECT rcTopLeft, rcBottomRight;
452
453 /* get button rects */
454 PAGER_GetButtonRects(infoPtr, &rcTopLeft, &rcBottomRight, FALSE);
455
456 GetCursorPos(&pt);
457
458 /* update states based on scroll position */
459 if (infoPtr->nPos > 0)
460 {
461 if (infoPtr->TLbtnState == PGF_INVISIBLE || infoPtr->TLbtnState == PGF_GRAYED)
462 infoPtr->TLbtnState = PGF_NORMAL;
463 }
464 else if (PtInRect(&rcTopLeft, pt))
465 infoPtr->TLbtnState = PGF_GRAYED;
466 else
467 infoPtr->TLbtnState = PGF_INVISIBLE;
468
469 if (scrollRange <= 0)
470 {
471 infoPtr->TLbtnState = PGF_INVISIBLE;
472 infoPtr->BRbtnState = PGF_INVISIBLE;
473 }
474 else if (infoPtr->nPos < scrollRange)
475 {
476 if (infoPtr->BRbtnState == PGF_INVISIBLE || infoPtr->BRbtnState == PGF_GRAYED)
477 infoPtr->BRbtnState = PGF_NORMAL;
478 }
479 else if (PtInRect(&rcBottomRight, pt))
480 infoPtr->BRbtnState = PGF_GRAYED;
481 else
482 infoPtr->BRbtnState = PGF_INVISIBLE;
483
484 /* only need to resize when entering or leaving PGF_INVISIBLE state */
485 resizeClient =
486 ((oldTLbtnState == PGF_INVISIBLE) != (infoPtr->TLbtnState == PGF_INVISIBLE)) ||
487 ((oldBRbtnState == PGF_INVISIBLE) != (infoPtr->BRbtnState == PGF_INVISIBLE));
488 /* initiate NCCalcSize to resize client wnd if necessary */
489 if (resizeClient)
490 SetWindowPos(infoPtr->hwndSelf, 0, 0, 0, 0, 0,
491 SWP_FRAMECHANGED | SWP_NOSIZE | SWP_NOMOVE |
492 SWP_NOZORDER | SWP_NOACTIVATE);
493
494 /* repaint when changing any state */
495 repaintBtns = (oldTLbtnState != infoPtr->TLbtnState) ||
496 (oldBRbtnState != infoPtr->BRbtnState);
497 if (repaintBtns)
498 SendMessageW(infoPtr->hwndSelf, WM_NCPAINT, 0, 0);
499 }
500
501 static LRESULT
502 PAGER_SetPos(PAGER_INFO* infoPtr, INT newPos, BOOL fromBtnPress)
503 {
504 INT scrollRange = PAGER_GetScrollRange(infoPtr);
505 INT oldPos = infoPtr->nPos;
506
507 if ((scrollRange <= 0) || (newPos < 0))
508 infoPtr->nPos = 0;
509 else if (newPos > scrollRange)
510 infoPtr->nPos = scrollRange;
511 else
512 infoPtr->nPos = newPos;
513
514 TRACE("[%p] pos=%d, oldpos=%d\n", infoPtr->hwndSelf, infoPtr->nPos, oldPos);
515
516 if (infoPtr->nPos != oldPos)
517 {
518 /* gray and restore btns, and if from WM_SETPOS, hide the gray btns */
519 PAGER_UpdateBtns(infoPtr, scrollRange, !fromBtnPress);
520 PAGER_PositionChildWnd(infoPtr);
521 }
522
523 return 0;
524 }
525
526 static LRESULT
527 PAGER_WindowPosChanging(PAGER_INFO* infoPtr, WINDOWPOS *winpos)
528 {
529 if ((infoPtr->dwStyle & CCS_NORESIZE) && !(winpos->flags & SWP_NOSIZE))
530 {
531 /* don't let the app resize the nonscrollable dimension of a control
532 * that was created with CCS_NORESIZE style
533 * (i.e. height for a horizontal pager, or width for a vertical one) */
534
535 /* except if the current dimension is 0 and app is setting for
536 * first time, then save amount as dimension. - GA 8/01 */
537
538 if (infoPtr->dwStyle & PGS_HORZ)
539 if (!infoPtr->nHeight && winpos->cy)
540 infoPtr->nHeight = winpos->cy;
541 else
542 winpos->cy = infoPtr->nHeight;
543 else
544 if (!infoPtr->nWidth && winpos->cx)
545 infoPtr->nWidth = winpos->cx;
546 else
547 winpos->cx = infoPtr->nWidth;
548 return 0;
549 }
550
551 return DefWindowProcW (infoPtr->hwndSelf, WM_WINDOWPOSCHANGING, 0, (LPARAM)winpos);
552 }
553
554 static INT
555 PAGER_SetFixedWidth(PAGER_INFO* infoPtr)
556 {
557 /* Must set the non-scrollable dimension to be less than the full height/width
558 * so that NCCalcSize is called. The Microsoft docs mention 3/4 factor for button
559 * size, and experimentation shows that the effect is almost right. */
560
561 RECT wndRect;
562 INT delta, h;
563 GetWindowRect(infoPtr->hwndSelf, &wndRect);
564
565 /* see what the app says for btn width */
566 PAGER_CalcSize(infoPtr, &infoPtr->nWidth, TRUE);
567
568 if (infoPtr->dwStyle & CCS_NORESIZE)
569 {
570 delta = wndRect.right - wndRect.left - infoPtr->nWidth;
571 if (delta > infoPtr->nButtonSize)
572 infoPtr->nWidth += 4 * infoPtr->nButtonSize / 3;
573 else if (delta > 0)
574 infoPtr->nWidth += infoPtr->nButtonSize / 3;
575 }
576
577 h = wndRect.bottom - wndRect.top + infoPtr->nButtonSize;
578
579 TRACE("[%p] infoPtr->nWidth set to %d\n",
580 infoPtr->hwndSelf, infoPtr->nWidth);
581
582 return h;
583 }
584
585 static INT
586 PAGER_SetFixedHeight(PAGER_INFO* infoPtr)
587 {
588 /* Must set the non-scrollable dimension to be less than the full height/width
589 * so that NCCalcSize is called. The Microsoft docs mention 3/4 factor for button
590 * size, and experimentation shows that the effect is almost right. */
591
592 RECT wndRect;
593 INT delta, w;
594 GetWindowRect(infoPtr->hwndSelf, &wndRect);
595
596 /* see what the app says for btn height */
597 PAGER_CalcSize(infoPtr, &infoPtr->nHeight, FALSE);
598
599 if (infoPtr->dwStyle & CCS_NORESIZE)
600 {
601 delta = wndRect.bottom - wndRect.top - infoPtr->nHeight;
602 if (delta > infoPtr->nButtonSize)
603 infoPtr->nHeight += infoPtr->nButtonSize;
604 else if (delta > 0)
605 infoPtr->nHeight += infoPtr->nButtonSize / 3;
606 }
607
608 w = wndRect.right - wndRect.left + infoPtr->nButtonSize;
609
610 TRACE("[%p] infoPtr->nHeight set to %d\n",
611 infoPtr->hwndSelf, infoPtr->nHeight);
612
613 return w;
614 }
615
616 /******************************************************************
617 * For the PGM_RECALCSIZE message (but not the other uses in *
618 * this module), the native control does only the following: *
619 * *
620 * if (some condition) *
621 * PostMessageW(hwnd, EM_FMTLINES, 0, 0); *
622 * return DefWindowProcW(hwnd, PGM_RECALCSIZE, 0, 0); *
623 * *
624 * When we figure out what the "some condition" is we will *
625 * implement that for the message processing. *
626 ******************************************************************/
627
628 static LRESULT
629 PAGER_RecalcSize(PAGER_INFO *infoPtr)
630 {
631 TRACE("[%p]\n", infoPtr->hwndSelf);
632
633 if (infoPtr->hwndChild)
634 {
635 INT scrollRange = PAGER_GetScrollRange(infoPtr);
636
637 if (scrollRange <= 0)
638 {
639 infoPtr->nPos = -1;
640 PAGER_SetPos(infoPtr, 0, FALSE);
641 }
642 else
643 PAGER_PositionChildWnd(infoPtr);
644 }
645
646 return 1;
647 }
648
649
650 static COLORREF
651 PAGER_SetBkColor (PAGER_INFO* infoPtr, COLORREF clrBk)
652 {
653 COLORREF clrTemp = infoPtr->clrBk;
654
655 infoPtr->clrBk = clrBk;
656 TRACE("[%p] %06x\n", infoPtr->hwndSelf, infoPtr->clrBk);
657
658 /* the native control seems to do things this way */
659 SetWindowPos(infoPtr->hwndSelf, 0, 0, 0, 0, 0,
660 SWP_FRAMECHANGED | SWP_NOSIZE | SWP_NOMOVE |
661 SWP_NOZORDER | SWP_NOACTIVATE);
662
663 RedrawWindow(infoPtr->hwndSelf, 0, 0, RDW_ERASE | RDW_INVALIDATE);
664
665 return clrTemp;
666 }
667
668
669 static INT
670 PAGER_SetBorder (PAGER_INFO* infoPtr, INT iBorder)
671 {
672 INT nTemp = infoPtr->nBorder;
673
674 infoPtr->nBorder = iBorder;
675 TRACE("[%p] %d\n", infoPtr->hwndSelf, infoPtr->nBorder);
676
677 PAGER_RecalcSize(infoPtr);
678
679 return nTemp;
680 }
681
682
683 static INT
684 PAGER_SetButtonSize (PAGER_INFO* infoPtr, INT iButtonSize)
685 {
686 INT nTemp = infoPtr->nButtonSize;
687
688 infoPtr->nButtonSize = iButtonSize;
689 TRACE("[%p] %d\n", infoPtr->hwndSelf, infoPtr->nButtonSize);
690
691 PAGER_RecalcSize(infoPtr);
692
693 return nTemp;
694 }
695
696
697 static LRESULT
698 PAGER_SetChild (PAGER_INFO* infoPtr, HWND hwndChild)
699 {
700 INT hw;
701
702 infoPtr->hwndChild = IsWindow (hwndChild) ? hwndChild : 0;
703
704 if (infoPtr->hwndChild)
705 {
706 TRACE("[%p] hwndChild=%p\n", infoPtr->hwndSelf, infoPtr->hwndChild);
707
708 if (infoPtr->dwStyle & PGS_HORZ) {
709 hw = PAGER_SetFixedHeight(infoPtr);
710 /* adjust non-scrollable dimension to fit the child */
711 SetWindowPos(infoPtr->hwndSelf, 0, 0, 0, hw, infoPtr->nHeight,
712 SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOZORDER |
713 SWP_NOSIZE | SWP_NOACTIVATE);
714 }
715 else {
716 hw = PAGER_SetFixedWidth(infoPtr);
717 /* adjust non-scrollable dimension to fit the child */
718 SetWindowPos(infoPtr->hwndSelf, 0, 0, 0, infoPtr->nWidth, hw,
719 SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOZORDER |
720 SWP_NOSIZE | SWP_NOACTIVATE);
721 }
722
723 /* position child within the page scroller */
724 SetWindowPos(infoPtr->hwndChild, HWND_TOP,
725 0,0,0,0,
726 SWP_SHOWWINDOW | SWP_NOSIZE); /* native is 0 */
727
728 infoPtr->nPos = -1;
729 PAGER_SetPos(infoPtr, 0, FALSE);
730 }
731
732 return 0;
733 }
734
735 static void
736 PAGER_Scroll(PAGER_INFO* infoPtr, INT dir)
737 {
738 NMPGSCROLL nmpgScroll;
739 RECT rcWnd;
740
741 if (infoPtr->hwndChild)
742 {
743 ZeroMemory (&nmpgScroll, sizeof (NMPGSCROLL));
744 nmpgScroll.hdr.hwndFrom = infoPtr->hwndSelf;
745 nmpgScroll.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
746 nmpgScroll.hdr.code = PGN_SCROLL;
747
748 GetWindowRect(infoPtr->hwndSelf, &rcWnd);
749 GetClientRect(infoPtr->hwndSelf, &nmpgScroll.rcParent);
750 nmpgScroll.iXpos = nmpgScroll.iYpos = 0;
751 nmpgScroll.iDir = dir;
752
753 if (infoPtr->dwStyle & PGS_HORZ)
754 {
755 nmpgScroll.iScroll = rcWnd.right - rcWnd.left;
756 nmpgScroll.iXpos = infoPtr->nPos;
757 }
758 else
759 {
760 nmpgScroll.iScroll = rcWnd.bottom - rcWnd.top;
761 nmpgScroll.iYpos = infoPtr->nPos;
762 }
763 nmpgScroll.iScroll -= 2*infoPtr->nButtonSize;
764
765 SendMessageW (infoPtr->hwndNotify, WM_NOTIFY, nmpgScroll.hdr.idFrom, (LPARAM)&nmpgScroll);
766
767 TRACE("[%p] PGN_SCROLL returns iScroll=%d\n", infoPtr->hwndSelf, nmpgScroll.iScroll);
768
769 if (nmpgScroll.iScroll > 0)
770 {
771 infoPtr->direction = dir;
772
773 if (dir == PGF_SCROLLLEFT || dir == PGF_SCROLLUP)
774 PAGER_SetPos(infoPtr, infoPtr->nPos - nmpgScroll.iScroll, TRUE);
775 else
776 PAGER_SetPos(infoPtr, infoPtr->nPos + nmpgScroll.iScroll, TRUE);
777 }
778 else
779 infoPtr->direction = -1;
780 }
781 }
782
783 static LRESULT
784 PAGER_FmtLines(const PAGER_INFO *infoPtr)
785 {
786 /* initiate NCCalcSize to resize client wnd and get size */
787 SetWindowPos(infoPtr->hwndSelf, 0, 0, 0, 0, 0,
788 SWP_FRAMECHANGED | SWP_NOSIZE | SWP_NOMOVE |
789 SWP_NOZORDER | SWP_NOACTIVATE);
790
791 SetWindowPos(infoPtr->hwndChild, 0,
792 0,0,infoPtr->nWidth,infoPtr->nHeight,
793 0);
794
795 return DefWindowProcW (infoPtr->hwndSelf, EM_FMTLINES, 0, 0);
796 }
797
798 static LRESULT
799 PAGER_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
800 {
801 PAGER_INFO *infoPtr;
802
803 /* allocate memory for info structure */
804 infoPtr = (PAGER_INFO *)Alloc (sizeof(PAGER_INFO));
805 if (!infoPtr) return -1;
806 SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
807
808 /* set default settings */
809 infoPtr->hwndSelf = hwnd;
810 infoPtr->hwndChild = NULL;
811 infoPtr->hwndNotify = lpcs->hwndParent;
812 infoPtr->dwStyle = lpcs->style;
813 infoPtr->clrBk = GetSysColor(COLOR_BTNFACE);
814 infoPtr->nBorder = 0;
815 infoPtr->nButtonSize = 12;
816 infoPtr->nPos = 0;
817 infoPtr->nWidth = 0;
818 infoPtr->nHeight = 0;
819 infoPtr->bForward = FALSE;
820 infoPtr->bCapture = FALSE;
821 infoPtr->TLbtnState = PGF_INVISIBLE;
822 infoPtr->BRbtnState = PGF_INVISIBLE;
823 infoPtr->direction = -1;
824
825 if (infoPtr->dwStyle & PGS_DRAGNDROP)
826 FIXME("[%p] Drag and Drop style is not implemented yet.\n", infoPtr->hwndSelf);
827
828 return 0;
829 }
830
831
832 static LRESULT
833 PAGER_Destroy (PAGER_INFO *infoPtr)
834 {
835 SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
836 Free (infoPtr); /* free pager info data */
837 return 0;
838 }
839
840 static LRESULT
841 PAGER_NCCalcSize(PAGER_INFO* infoPtr, WPARAM wParam, LPRECT lpRect)
842 {
843 RECT rcChild, rcWindow;
844 INT scrollRange;
845
846 /*
847 * lpRect points to a RECT struct. On entry, the struct
848 * contains the proposed wnd rectangle for the window.
849 * On exit, the struct should contain the screen
850 * coordinates of the corresponding window's client area.
851 */
852
853 DefWindowProcW (infoPtr->hwndSelf, WM_NCCALCSIZE, wParam, (LPARAM)lpRect);
854
855 TRACE("orig rect=%s\n", wine_dbgstr_rect(lpRect));
856
857 GetWindowRect (infoPtr->hwndChild, &rcChild);
858 MapWindowPoints (0, infoPtr->hwndSelf, (LPPOINT)&rcChild, 2); /* FIXME: RECT != 2 POINTS */
859 GetWindowRect (infoPtr->hwndSelf, &rcWindow);
860
861 if (infoPtr->dwStyle & PGS_HORZ)
862 {
863 infoPtr->nWidth = lpRect->right - lpRect->left;
864 PAGER_CalcSize (infoPtr, &infoPtr->nWidth, TRUE);
865
866 scrollRange = infoPtr->nWidth - (rcWindow.right - rcWindow.left);
867
868 if (infoPtr->TLbtnState && (lpRect->left + infoPtr->nButtonSize < lpRect->right))
869 lpRect->left += infoPtr->nButtonSize;
870 if (infoPtr->BRbtnState && (lpRect->right - infoPtr->nButtonSize > lpRect->left))
871 lpRect->right -= infoPtr->nButtonSize;
872 }
873 else
874 {
875 infoPtr->nHeight = lpRect->bottom - lpRect->top;
876 PAGER_CalcSize (infoPtr, &infoPtr->nHeight, FALSE);
877
878 scrollRange = infoPtr->nHeight - (rcWindow.bottom - rcWindow.top);
879
880 if (infoPtr->TLbtnState && (lpRect->top + infoPtr->nButtonSize < lpRect->bottom))
881 lpRect->top += infoPtr->nButtonSize;
882 if (infoPtr->BRbtnState && (lpRect->bottom - infoPtr->nButtonSize > lpRect->top))
883 lpRect->bottom -= infoPtr->nButtonSize;
884 }
885
886 TRACE("nPos=%d, nHeight=%d, window=%s\n",
887 infoPtr->nPos, infoPtr->nHeight,
888 wine_dbgstr_rect(&rcWindow));
889
890 TRACE("[%p] client rect set to %dx%d at (%d,%d) BtnState[%d,%d]\n",
891 infoPtr->hwndSelf, lpRect->right-lpRect->left, lpRect->bottom-lpRect->top,
892 lpRect->left, lpRect->top,
893 infoPtr->TLbtnState, infoPtr->BRbtnState);
894
895 return 0;
896 }
897
898 static LRESULT
899 PAGER_NCPaint (const PAGER_INFO* infoPtr, HRGN hRgn)
900 {
901 RECT rcBottomRight, rcTopLeft;
902 HDC hdc;
903
904 if (infoPtr->dwStyle & WS_MINIMIZE)
905 return 0;
906
907 DefWindowProcW (infoPtr->hwndSelf, WM_NCPAINT, (WPARAM)hRgn, 0);
908
909 if (!(hdc = GetDCEx (infoPtr->hwndSelf, 0, DCX_USESTYLE | DCX_WINDOW)))
910 return 0;
911
912 PAGER_GetButtonRects(infoPtr, &rcTopLeft, &rcBottomRight, FALSE);
913
914 PAGER_DrawButton(hdc, infoPtr->clrBk, rcTopLeft,
915 infoPtr->dwStyle & PGS_HORZ, TRUE, infoPtr->TLbtnState);
916 PAGER_DrawButton(hdc, infoPtr->clrBk, rcBottomRight,
917 infoPtr->dwStyle & PGS_HORZ, FALSE, infoPtr->BRbtnState);
918
919 ReleaseDC( infoPtr->hwndSelf, hdc );
920 return 0;
921 }
922
923 static INT
924 PAGER_HitTest (const PAGER_INFO* infoPtr, const POINT * pt)
925 {
926 RECT clientRect, rcTopLeft, rcBottomRight;
927 POINT ptWindow;
928
929 GetClientRect (infoPtr->hwndSelf, &clientRect);
930
931 if (PtInRect(&clientRect, *pt))
932 {
933 TRACE("child\n");
934 return -1;
935 }
936
937 ptWindow = *pt;
938 PAGER_GetButtonRects(infoPtr, &rcTopLeft, &rcBottomRight, TRUE);
939
940 if ((infoPtr->TLbtnState != PGF_INVISIBLE) && PtInRect(&rcTopLeft, ptWindow))
941 {
942 TRACE("PGB_TOPORLEFT\n");
943 return PGB_TOPORLEFT;
944 }
945 else if ((infoPtr->BRbtnState != PGF_INVISIBLE) && PtInRect(&rcBottomRight, ptWindow))
946 {
947 TRACE("PGB_BOTTOMORRIGHT\n");
948 return PGB_BOTTOMORRIGHT;
949 }
950
951 TRACE("nowhere\n");
952 return -1;
953 }
954
955 static LRESULT
956 PAGER_NCHitTest (const PAGER_INFO* infoPtr, INT x, INT y)
957 {
958 POINT pt;
959 INT nHit;
960
961 pt.x = x;
962 pt.y = y;
963
964 ScreenToClient (infoPtr->hwndSelf, &pt);
965 nHit = PAGER_HitTest(infoPtr, &pt);
966
967 return (nHit < 0) ? HTTRANSPARENT : HTCLIENT;
968 }
969
970 static LRESULT
971 PAGER_MouseMove (PAGER_INFO* infoPtr, INT keys, INT x, INT y)
972 {
973 POINT clpt, pt;
974 RECT wnrect, *btnrect = NULL;
975 BOOL topLeft = FALSE;
976 INT btnstate = 0;
977 INT hit;
978 HDC hdc;
979
980 pt.x = x;
981 pt.y = y;
982
983 TRACE("[%p] to (%d,%d)\n", infoPtr->hwndSelf, x, y);
984 ClientToScreen(infoPtr->hwndSelf, &pt);
985 GetWindowRect(infoPtr->hwndSelf, &wnrect);
986 if (PtInRect(&wnrect, pt)) {
987 RECT TLbtnrect, BRbtnrect;
988 PAGER_GetButtonRects(infoPtr, &TLbtnrect, &BRbtnrect, FALSE);
989
990 clpt = pt;
991 MapWindowPoints(0, infoPtr->hwndSelf, &clpt, 1);
992 hit = PAGER_HitTest(infoPtr, &clpt);
993 if ((hit == PGB_TOPORLEFT) && (infoPtr->TLbtnState == PGF_NORMAL))
994 {
995 topLeft = TRUE;
996 btnrect = &TLbtnrect;
997 infoPtr->TLbtnState = PGF_HOT;
998 btnstate = infoPtr->TLbtnState;
999 }
1000 else if ((hit == PGB_BOTTOMORRIGHT) && (infoPtr->BRbtnState == PGF_NORMAL))
1001 {
1002 topLeft = FALSE;
1003 btnrect = &BRbtnrect;
1004 infoPtr->BRbtnState = PGF_HOT;
1005