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wine/dlls/comctl32/updown.c

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  1 /*
  2  * Updown control
  3  *
  4  * Copyright 1997, 2002 Dimitrie O. Paun
  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  * NOTE
 21  * 
 22  * This code was audited for completeness against the documented features
 23  * of Comctl32.dll version 6.0 on Sep. 9, 2002, by Dimitrie O. Paun.
 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  */
 30 
 31 #include <stdlib.h>
 32 #include <string.h>
 33 #include <stdarg.h>
 34 #include <stdio.h>
 35 
 36 #include "windef.h"
 37 #include "winbase.h"
 38 #include "wingdi.h"
 39 #include "winuser.h"
 40 #include "winnls.h"
 41 #include "commctrl.h"
 42 #include "comctl32.h"
 43 #include "uxtheme.h"
 44 #include "tmschema.h"
 45 #include "wine/unicode.h"
 46 #include "wine/debug.h"
 47 
 48 WINE_DEFAULT_DEBUG_CHANNEL(updown);
 49 
 50 typedef struct
 51 {
 52     HWND      Self;            /* Handle to this up-down control */
 53     HWND      Notify;          /* Handle to the parent window */
 54     DWORD     dwStyle;         /* The GWL_STYLE for this window */
 55     UINT      AccelCount;      /* Number of elements in AccelVect */
 56     UDACCEL*  AccelVect;       /* Vector containing AccelCount elements */
 57     INT       AccelIndex;      /* Current accel index, -1 if not accel'ing */
 58     INT       Base;            /* Base to display nr in the buddy window */
 59     INT       CurVal;          /* Current up-down value */
 60     INT       MinVal;          /* Minimum up-down value */
 61     INT       MaxVal;          /* Maximum up-down value */
 62     HWND      Buddy;           /* Handle to the buddy window */
 63     INT       BuddyType;       /* Remembers the buddy type BUDDY_TYPE_* */
 64     INT       Flags;           /* Internal Flags FLAG_* */
 65     BOOL      UnicodeFormat;   /* Marks the use of Unicode internally */
 66 } UPDOWN_INFO;
 67 
 68 /* Control configuration constants */
 69 
 70 #define INITIAL_DELAY   500    /* initial timer until auto-inc kicks in */
 71 #define AUTOPRESS_DELAY 250    /* time to keep arrow pressed on KEY_DOWN */
 72 #define REPEAT_DELAY    50     /* delay between auto-increments */
 73 
 74 #define DEFAULT_WIDTH       14 /* default width of the ctrl */
 75 #define DEFAULT_XSEP         0 /* default separation between buddy and ctrl */
 76 #define DEFAULT_ADDTOP       0 /* amount to extend above the buddy window */
 77 #define DEFAULT_ADDBOT       0 /* amount to extend below the buddy window */
 78 #define DEFAULT_BUDDYBORDER  2 /* Width/height of the buddy border */
 79 #define DEFAULT_BUDDYSPACER  2 /* Spacer between the buddy and the ctrl */
 80 #define DEFAULT_BUDDYBORDER_THEMED  1 /* buddy border when theming is enabled */
 81 #define DEFAULT_BUDDYSPACER_THEMED  0 /* buddy spacer when theming is enabled */
 82 
 83 /* Work constants */
 84 
 85 #define FLAG_INCR       0x01
 86 #define FLAG_DECR       0x02
 87 #define FLAG_MOUSEIN    0x04
 88 #define FLAG_PRESSED    0x08
 89 #define FLAG_ARROW      (FLAG_INCR | FLAG_DECR)
 90 
 91 #define BUDDY_TYPE_UNKNOWN 0
 92 #define BUDDY_TYPE_LISTBOX 1
 93 #define BUDDY_TYPE_EDIT    2
 94 
 95 #define TIMER_AUTOREPEAT   1
 96 #define TIMER_ACCEL        2
 97 #define TIMER_AUTOPRESS    3
 98 
 99 #define UPDOWN_GetInfoPtr(hwnd) ((UPDOWN_INFO *)GetWindowLongPtrW (hwnd,0))
100 #define COUNT_OF(a) (sizeof(a)/sizeof(a[0]))
101 
102 static const WCHAR BUDDY_UPDOWN_HWND[] = { 'b', 'u', 'd', 'd', 'y', 'U', 'p', 'D', 'o', 'w', 'n', 'H', 'W', 'N', 'D', 0 };
103 static const WCHAR BUDDY_SUPERCLASS_WNDPROC[] = { 'b', 'u', 'd', 'd', 'y', 'S', 'u', 'p', 'p', 'e', 'r', 
104                                                   'C', 'l', 'a', 's', 's', 'W', 'n', 'd', 'P', 'r', 'o', 'c', 0 };
105 static void UPDOWN_DoAction (UPDOWN_INFO *infoPtr, int delta, int action);
106 
107 /***********************************************************************
108  *           UPDOWN_IsBuddyEdit
109  * Tests if our buddy is an edit control.
110  */
111 static inline BOOL UPDOWN_IsBuddyEdit(const UPDOWN_INFO *infoPtr)
112 {
113     return infoPtr->BuddyType == BUDDY_TYPE_EDIT;
114 }
115 
116 /***********************************************************************
117  *           UPDOWN_IsBuddyListbox
118  * Tests if our buddy is a listbox control.
119  */
120 static inline BOOL UPDOWN_IsBuddyListbox(const UPDOWN_INFO *infoPtr)
121 {
122     return infoPtr->BuddyType == BUDDY_TYPE_LISTBOX;
123 }
124 
125 /***********************************************************************
126  *           UPDOWN_InBounds
127  * Tests if a given value 'val' is between the Min&Max limits
128  */
129 static BOOL UPDOWN_InBounds(const UPDOWN_INFO *infoPtr, int val)
130 {
131     if(infoPtr->MaxVal > infoPtr->MinVal)
132         return (infoPtr->MinVal <= val) && (val <= infoPtr->MaxVal);
133     else
134         return (infoPtr->MaxVal <= val) && (val <= infoPtr->MinVal);
135 }
136 
137 /***********************************************************************
138  *           UPDOWN_OffsetVal
139  * Change the current value by delta.
140  * It returns TRUE is the value was changed successfully, or FALSE
141  * if the value was not changed, as it would go out of bounds.
142  */
143 static BOOL UPDOWN_OffsetVal(UPDOWN_INFO *infoPtr, int delta)
144 {
145     /* check if we can do the modification first */
146     if(!UPDOWN_InBounds (infoPtr, infoPtr->CurVal+delta)) {
147         if (infoPtr->dwStyle & UDS_WRAP) {
148             delta += (delta < 0 ? -1 : 1) *
149                      (infoPtr->MaxVal < infoPtr->MinVal ? -1 : 1) *
150                      (infoPtr->MinVal - infoPtr->MaxVal) +
151                      (delta < 0 ? 1 : -1);
152         } else return FALSE;
153     }
154 
155     infoPtr->CurVal += delta;
156     return TRUE;
157 }
158 
159 /***********************************************************************
160  * UPDOWN_HasBuddyBorder
161  *
162  * When we have a buddy set and that we are aligned on our buddy, we
163  * want to draw a sunken edge to make like we are part of that control.
164  */
165 static BOOL UPDOWN_HasBuddyBorder(const UPDOWN_INFO *infoPtr)
166 {
167     return  ( ((infoPtr->dwStyle & (UDS_ALIGNLEFT | UDS_ALIGNRIGHT)) != 0) &&
168               UPDOWN_IsBuddyEdit(infoPtr) );
169 }
170 
171 /***********************************************************************
172  *           UPDOWN_GetArrowRect
173  * wndPtr   - pointer to the up-down wnd
174  * rect     - will hold the rectangle
175  * arrow    - FLAG_INCR to get the "increment" rect (up or right)
176  *            FLAG_DECR to get the "decrement" rect (down or left)
177  *            If both flags are present, the envelope is returned.
178  */
179 static void UPDOWN_GetArrowRect (const UPDOWN_INFO* infoPtr, RECT *rect, int arrow)
180 {
181     HTHEME theme = GetWindowTheme (infoPtr->Self);
182     const int border = theme ? DEFAULT_BUDDYBORDER_THEMED : DEFAULT_BUDDYBORDER;
183     const int spacer = theme ? DEFAULT_BUDDYSPACER_THEMED : DEFAULT_BUDDYSPACER;
184     GetClientRect (infoPtr->Self, rect);
185 
186     /*
187      * Make sure we calculate the rectangle to fit even if we draw the
188      * border.
189      */
190     if (UPDOWN_HasBuddyBorder(infoPtr)) {
191         if (infoPtr->dwStyle & UDS_ALIGNLEFT)
192             rect->left += border;
193         else
194             rect->right -= border;
195 
196         InflateRect(rect, 0, -border);
197     }
198 
199     /* now figure out if we need a space away from the buddy */
200     if (IsWindow(infoPtr->Buddy) ) {
201         if (infoPtr->dwStyle & UDS_ALIGNLEFT) rect->right -= spacer;
202         else rect->left += spacer;
203     }
204 
205     /*
206      * We're calculating the midpoint to figure-out where the
207      * separation between the buttons will lay. We make sure that we
208      * round the uneven numbers by adding 1.
209      */
210     if (infoPtr->dwStyle & UDS_HORZ) {
211         int len = rect->right - rect->left + 1; /* compute the width */
212         if (arrow & FLAG_INCR)
213             rect->left = rect->left + len/2;
214         if (arrow & FLAG_DECR)
215             rect->right =  rect->left + len/2 - (theme ? 0 : 1);
216     } else {
217         int len = rect->bottom - rect->top + 1; /* compute the height */
218         if (arrow & FLAG_INCR)
219             rect->bottom =  rect->top + len/2 - (theme ? 0 : 1);
220         if (arrow & FLAG_DECR)
221             rect->top =  rect->top + len/2;
222     }
223 }
224 
225 /***********************************************************************
226  *           UPDOWN_GetArrowFromPoint
227  * Returns the rectagle (for the up or down arrow) that contains pt.
228  * If it returns the up rect, it returns FLAG_INCR.
229  * If it returns the down rect, it returns FLAG_DECR.
230  */
231 static INT UPDOWN_GetArrowFromPoint (const UPDOWN_INFO *infoPtr, RECT *rect, POINT pt)
232 {
233     UPDOWN_GetArrowRect (infoPtr, rect, FLAG_INCR);
234     if(PtInRect(rect, pt)) return FLAG_INCR;
235 
236     UPDOWN_GetArrowRect (infoPtr, rect, FLAG_DECR);
237     if(PtInRect(rect, pt)) return FLAG_DECR;
238 
239     return 0;
240 }
241 
242 
243 /***********************************************************************
244  *           UPDOWN_GetThousandSep
245  * Returns the thousand sep. If an error occurs, it returns ','.
246  */
247 static WCHAR UPDOWN_GetThousandSep(void)
248 {
249     WCHAR sep[2];
250 
251     if(GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_STHOUSAND, sep, 2) != 1)
252         sep[0] = ',';
253 
254     return sep[0];
255 }
256 
257 /***********************************************************************
258  *           UPDOWN_GetBuddyInt
259  * Tries to read the pos from the buddy window and if it succeeds,
260  * it stores it in the control's CurVal
261  * returns:
262  *   TRUE  - if it read the integer from the buddy successfully
263  *   FALSE - if an error occurred
264  */
265 static BOOL UPDOWN_GetBuddyInt (UPDOWN_INFO *infoPtr)
266 {
267     WCHAR txt[20], sep, *src, *dst;
268     int newVal;
269 
270     if (!((infoPtr->dwStyle & UDS_SETBUDDYINT) && IsWindow(infoPtr->Buddy)))
271         return FALSE;
272 
273     /*if the buddy is a list window, we must set curr index */
274     if (UPDOWN_IsBuddyListbox(infoPtr)) {
275         newVal = SendMessageW(infoPtr->Buddy, LB_GETCARETINDEX, 0, 0);
276         if(newVal < 0) return FALSE;
277     } else {
278         /* we have a regular window, so will get the text */
279         /* note that a zero-length string is a legitimate value for 'txt',
280          * and ought to result in a successful conversion to ''. */
281         if (GetWindowTextW(infoPtr->Buddy, txt, COUNT_OF(txt)) < 0)
282             return FALSE;
283 
284         sep = UPDOWN_GetThousandSep();
285 
286         /* now get rid of the separators */
287         for(src = dst = txt; *src; src++)
288             if(*src != sep) *dst++ = *src;
289         *dst = 0;
290 
291         /* try to convert the number and validate it */
292         newVal = strtolW(txt, &src, infoPtr->Base);
293         if(*src || !UPDOWN_InBounds (infoPtr, newVal)) return FALSE;
294     }
295 
296     TRACE("new value(%d) from buddy (old=%d)\n", newVal, infoPtr->CurVal);
297     infoPtr->CurVal = newVal;
298     return TRUE;
299 }
300 
301 
302 /***********************************************************************
303  *           UPDOWN_SetBuddyInt
304  * Tries to set the pos to the buddy window based on current pos
305  * returns:
306  *   TRUE  - if it set the caption of the  buddy successfully
307  *   FALSE - if an error occurred
308  */
309 static BOOL UPDOWN_SetBuddyInt (const UPDOWN_INFO *infoPtr)
310 {
311     WCHAR fmt[3] = { '%', 'd', '\0' };
312     WCHAR txt[20];
313     int len;
314 
315     if (!((infoPtr->dwStyle & UDS_SETBUDDYINT) && IsWindow(infoPtr->Buddy))) 
316         return FALSE;
317 
318     TRACE("set new value(%d) to buddy.\n", infoPtr->CurVal);
319 
320     /*if the buddy is a list window, we must set curr index */
321     if (UPDOWN_IsBuddyListbox(infoPtr)) {
322         return SendMessageW(infoPtr->Buddy, LB_SETCURSEL, infoPtr->CurVal, 0) != LB_ERR;
323     }
324 
325     /* Regular window, so set caption to the number */
326     if (infoPtr->Base == 16) fmt[1] = 'X';
327     len = wsprintfW(txt, fmt, infoPtr->CurVal);
328 
329 
330     /* Do thousands separation if necessary */
331     if (!(infoPtr->dwStyle & UDS_NOTHOUSANDS) && (len > 3)) {
332         WCHAR tmp[COUNT_OF(txt)], *src = tmp, *dst = txt;
333         WCHAR sep = UPDOWN_GetThousandSep();
334         int start = len % 3;
335 
336         memcpy(tmp, txt, sizeof(txt));
337         if (start == 0) start = 3;
338         dst += start;
339         src += start;
340         for (len=0; *src; len++) {
341             if (len % 3 == 0) *dst++ = sep;
342             *dst++ = *src++;
343         }
344         *dst = 0;
345     }
346 
347     return SetWindowTextW(infoPtr->Buddy, txt);
348 }
349 
350 /***********************************************************************
351  * UPDOWN_DrawBuddyBackground
352  *
353  * Draw buddy background for visual integration.
354  */
355 static BOOL UPDOWN_DrawBuddyBackground (const UPDOWN_INFO *infoPtr, HDC hdc)
356 {
357     RECT br;
358     HTHEME buddyTheme = GetWindowTheme (infoPtr->Buddy);
359     if (!buddyTheme) return FALSE;
360 
361     GetClientRect (infoPtr->Buddy, &br);
362     MapWindowPoints (infoPtr->Buddy, infoPtr->Self, (POINT*)&br, 2);
363     /* FIXME: take disabled etc. into account */
364     DrawThemeBackground (buddyTheme, hdc, 0, 0, &br, NULL);
365     return TRUE;
366 }
367 
368 /***********************************************************************
369  * UPDOWN_Draw
370  *
371  * Draw the arrows. The background need not be erased.
372  */
373 static LRESULT UPDOWN_Draw (const UPDOWN_INFO *infoPtr, HDC hdc)
374 {
375     BOOL uPressed, uHot, dPressed, dHot;
376     RECT rect;
377     HTHEME theme = GetWindowTheme (infoPtr->Self);
378     int uPart = 0, uState = 0, dPart = 0, dState = 0;
379     BOOL needBuddyBg = FALSE;
380 
381     uPressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_INCR);
382     uHot = (infoPtr->Flags & FLAG_INCR) && (infoPtr->Flags & FLAG_MOUSEIN);
383     dPressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_DECR);
384     dHot = (infoPtr->Flags & FLAG_DECR) && (infoPtr->Flags & FLAG_MOUSEIN);
385     if (theme) {
386         uPart = (infoPtr->dwStyle & UDS_HORZ) ? SPNP_UPHORZ : SPNP_UP;
387         uState = (infoPtr->dwStyle & WS_DISABLED) ? DNS_DISABLED 
388             : (uPressed ? DNS_PRESSED : (uHot ? DNS_HOT : DNS_NORMAL));
389         dPart = (infoPtr->dwStyle & UDS_HORZ) ? SPNP_DOWNHORZ : SPNP_DOWN;
390         dState = (infoPtr->dwStyle & WS_DISABLED) ? DNS_DISABLED 
391             : (dPressed ? DNS_PRESSED : (dHot ? DNS_HOT : DNS_NORMAL));
392         needBuddyBg = IsWindow (infoPtr->Buddy)
393             && (IsThemeBackgroundPartiallyTransparent (theme, uPart, uState)
394               || IsThemeBackgroundPartiallyTransparent (theme, dPart, dState));
395     }
396 
397     /* Draw the common border between ourselves and our buddy */
398     if (UPDOWN_HasBuddyBorder(infoPtr) || needBuddyBg) {
399         if (!theme || !UPDOWN_DrawBuddyBackground (infoPtr, hdc)) {
400             GetClientRect(infoPtr->Self, &rect);
401             DrawEdge(hdc, &rect, EDGE_SUNKEN,
402                      BF_BOTTOM | BF_TOP |
403                      (infoPtr->dwStyle & UDS_ALIGNLEFT ? BF_LEFT : BF_RIGHT));
404         }
405     }
406 
407     /* Draw the incr button */
408     UPDOWN_GetArrowRect (infoPtr, &rect, FLAG_INCR);
409     if (theme) {
410         DrawThemeBackground(theme, hdc, uPart, uState, &rect, NULL);
411     } else {
412         DrawFrameControl(hdc, &rect, DFC_SCROLL,
413             (infoPtr->dwStyle & UDS_HORZ ? DFCS_SCROLLRIGHT : DFCS_SCROLLUP) |
414             ((infoPtr->dwStyle & UDS_HOTTRACK) && uHot ? DFCS_HOT : 0) |
415             (uPressed ? DFCS_PUSHED : 0) |
416             (infoPtr->dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
417     }
418 
419     /* Draw the decr button */
420     UPDOWN_GetArrowRect(infoPtr, &rect, FLAG_DECR);
421     if (theme) {
422         DrawThemeBackground(theme, hdc, dPart, dState, &rect, NULL);
423     } else {
424         DrawFrameControl(hdc, &rect, DFC_SCROLL,
425             (infoPtr->dwStyle & UDS_HORZ ? DFCS_SCROLLLEFT : DFCS_SCROLLDOWN) |
426             ((infoPtr->dwStyle & UDS_HOTTRACK) && dHot ? DFCS_HOT : 0) |
427             (dPressed ? DFCS_PUSHED : 0) |
428             (infoPtr->dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
429     }
430 
431     return 0;
432 }
433 
434 /***********************************************************************
435  * UPDOWN_Paint
436  *
437  * Asynchronous drawing (must ONLY be used in WM_PAINT).
438  * Calls UPDOWN_Draw.
439  */
440 static LRESULT UPDOWN_Paint (const UPDOWN_INFO *infoPtr, HDC hdc)
441 {
442     PAINTSTRUCT ps;
443     if (hdc) return UPDOWN_Draw (infoPtr, hdc);
444     hdc = BeginPaint (infoPtr->Self, &ps);
445     UPDOWN_Draw (infoPtr, hdc);
446     EndPaint (infoPtr->Self, &ps);
447     return 0;
448 }
449 
450 /***********************************************************************
451  * UPDOWN_KeyPressed
452  *
453  * Handle key presses (up & down) when we have to do so
454  */
455 static LRESULT UPDOWN_KeyPressed(UPDOWN_INFO *infoPtr, int key)
456 {
457     int arrow;
458 
459     if (key == VK_UP) arrow = FLAG_INCR;
460     else if (key == VK_DOWN) arrow = FLAG_DECR;
461     else return 1;
462 
463     UPDOWN_GetBuddyInt (infoPtr);
464     infoPtr->Flags &= ~FLAG_ARROW;
465     infoPtr->Flags |= FLAG_PRESSED | arrow;
466     InvalidateRect (infoPtr->Self, NULL, FALSE);
467     SetTimer(infoPtr->Self, TIMER_AUTOPRESS, AUTOPRESS_DELAY, 0);
468     UPDOWN_DoAction (infoPtr, 1, arrow);
469     return 0;
470 }
471 
472 /***********************************************************************
473  * UPDOWN_MouseWheel
474  *
475  * Handle mouse wheel scrolling
476  */
477 static LRESULT UPDOWN_MouseWheel(UPDOWN_INFO *infoPtr, WPARAM wParam)
478 {
479     int iWheelDelta = GET_WHEEL_DELTA_WPARAM(wParam) / WHEEL_DELTA;
480 
481     if (wParam & (MK_SHIFT | MK_CONTROL))
482         return 0;
483 
484     if (iWheelDelta != 0)
485     {
486         UPDOWN_GetBuddyInt(infoPtr);
487         UPDOWN_DoAction(infoPtr, abs(iWheelDelta), iWheelDelta > 0 ? FLAG_INCR : FLAG_DECR);
488     }
489 
490     return 1;
491 }
492 
493 
494 /***********************************************************************
495  * UPDOWN_Buddy_SubclassProc used to handle messages sent to the buddy
496  *                           control.
497  */
498 static LRESULT CALLBACK
499 UPDOWN_Buddy_SubclassProc(HWND  hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
500 {
501     WNDPROC superClassWndProc = (WNDPROC)GetPropW(hwnd, BUDDY_SUPERCLASS_WNDPROC);
502 
503     TRACE("hwnd=%p, wndProc=%p, uMsg=%04x, wParam=%08lx, lParam=%08lx\n",
504           hwnd, superClassWndProc, uMsg, wParam, lParam);
505 
506     if (uMsg == WM_KEYDOWN) {
507         HWND upDownHwnd = GetPropW(hwnd, BUDDY_UPDOWN_HWND);
508 
509         UPDOWN_KeyPressed(UPDOWN_GetInfoPtr(upDownHwnd), (int)wParam);
510     }
511     else if (uMsg == WM_MOUSEWHEEL) {
512         HWND upDownHwnd = GetPropW(hwnd, BUDDY_UPDOWN_HWND);
513 
514        UPDOWN_MouseWheel(UPDOWN_GetInfoPtr(upDownHwnd), (int)wParam);
515     }
516 
517     return CallWindowProcW( superClassWndProc, hwnd, uMsg, wParam, lParam);
518 }
519 
520 /***********************************************************************
521  *           UPDOWN_SetBuddy
522  *
523  * Sets bud as a new Buddy.
524  * Then, it should subclass the buddy
525  * If window has the UDS_ARROWKEYS, it subcalsses the buddy window to
526  * process the UP/DOWN arrow keys.
527  * If window has the UDS_ALIGNLEFT or UDS_ALIGNRIGHT style
528  * the size/pos of the buddy and the control are adjusted accordingly.
529  */
530 static HWND UPDOWN_SetBuddy (UPDOWN_INFO* infoPtr, HWND bud)
531 {
532     static const WCHAR editW[] = { 'E', 'd', 'i', 't', 0 };
533     static const WCHAR listboxW[] = { 'L', 'i', 's', 't', 'b', 'o', 'x', 0 };
534     RECT  budRect;  /* new coord for the buddy */
535     int   x, width;  /* new x position and width for the up-down */
536     WNDPROC baseWndProc;
537     WCHAR buddyClass[40];
538     HWND ret;
539 
540     TRACE("(hwnd=%p, bud=%p)\n", infoPtr->Self, bud);
541 
542     ret = infoPtr->Buddy;
543 
544     /* there is already a body assigned */
545     if (infoPtr->Buddy)  RemovePropW(infoPtr->Buddy, BUDDY_UPDOWN_HWND);
546 
547     if(!IsWindow(bud))
548         bud = 0;
549 
550     /* Store buddy window handle */
551     infoPtr->Buddy = bud;
552 
553     if(bud) {
554 
555         /* keep upDown ctrl hwnd in a buddy property */
556         SetPropW( bud, BUDDY_UPDOWN_HWND, infoPtr->Self);
557 
558         /* Store buddy window class type */
559         infoPtr->BuddyType = BUDDY_TYPE_UNKNOWN;
560         if (GetClassNameW(bud, buddyClass, COUNT_OF(buddyClass))) {
561             if (lstrcmpiW(buddyClass, editW) == 0)
562                 infoPtr->BuddyType = BUDDY_TYPE_EDIT;
563             else if (lstrcmpiW(buddyClass, listboxW) == 0)
564                 infoPtr->BuddyType = BUDDY_TYPE_LISTBOX;
565         }
566 
567         if(infoPtr->dwStyle & UDS_ARROWKEYS){
568             /* Note that I don't clear the BUDDY_SUPERCLASS_WNDPROC property
569                when we reset the upDown ctrl buddy to another buddy because it is not
570                good to break the window proc chain. */
571             if (!GetPropW(bud, BUDDY_SUPERCLASS_WNDPROC)) {
572                 baseWndProc = (WNDPROC)SetWindowLongPtrW(bud, GWLP_WNDPROC, (LPARAM)UPDOWN_Buddy_SubclassProc);
573                 SetPropW(bud, BUDDY_SUPERCLASS_WNDPROC, (HANDLE)baseWndProc);
574             }
575         }
576 
577         /* Get the rect of the buddy relative to its parent */
578         GetWindowRect(infoPtr->Buddy, &budRect);
579         MapWindowPoints(HWND_DESKTOP, GetParent(infoPtr->Buddy), (POINT *)(&budRect.left), 2);
580 
581         /* now do the positioning */
582         if  (infoPtr->dwStyle & UDS_ALIGNLEFT) {
583             x  = budRect.left;
584             budRect.left += DEFAULT_WIDTH + DEFAULT_XSEP;
585         } else if (infoPtr->dwStyle & UDS_ALIGNRIGHT) {
586             budRect.right -= DEFAULT_WIDTH + DEFAULT_XSEP;
587             x  = budRect.right+DEFAULT_XSEP;
588         } else {
589             /* nothing to do */
590             return ret;
591         }
592 
593         /* first adjust the buddy to accommodate the up/down */
594         SetWindowPos(infoPtr->Buddy, 0, budRect.left, budRect.top,
595                      budRect.right  - budRect.left, budRect.bottom - budRect.top,
596                      SWP_NOACTIVATE|SWP_NOZORDER);
597 
598         /* now position the up/down */
599         /* Since the UDS_ALIGN* flags were used, */
600         /* we will pick the position and size of the window. */
601         width = DEFAULT_WIDTH;
602 
603         /*
604          * If the updown has a buddy border, it has to overlap with the buddy
605          * to look as if it is integrated with the buddy control.
606          * We nudge the control or change its size to overlap.
607          */
608         if (UPDOWN_HasBuddyBorder(infoPtr)) {
609             if(infoPtr->dwStyle & UDS_ALIGNLEFT)
610                 width += DEFAULT_BUDDYBORDER;
611             else
612                 x -= DEFAULT_BUDDYBORDER;
613         }
614 
615         SetWindowPos(infoPtr->Self, 0, x,
616                      budRect.top - DEFAULT_ADDTOP, width,
617                      budRect.bottom - budRect.top + DEFAULT_ADDTOP + DEFAULT_ADDBOT,
618                      SWP_NOACTIVATE|SWP_FRAMECHANGED|SWP_NOZORDER);
619     } else {
620         RECT rect;
621         GetWindowRect(infoPtr->Self, &rect);
622         MapWindowPoints(HWND_DESKTOP, GetParent(infoPtr->Self), (POINT *)&rect, 2);
623         SetWindowPos(infoPtr->Self, 0, rect.left, rect.top, DEFAULT_WIDTH, rect.bottom - rect.top,
624                      SWP_NOACTIVATE|SWP_FRAMECHANGED|SWP_NOZORDER);
625     }
626     return ret;
627 }
628 
629 /***********************************************************************
630  *           UPDOWN_DoAction
631  *
632  * This function increments/decrements the CurVal by the
633  * 'delta' amount according to the 'action' flag which can be a
634  * combination of FLAG_INCR and FLAG_DECR
635  * It notifies the parent as required.
636  * It handles wraping and non-wraping correctly.
637  * It is assumed that delta>0
638  */
639 static void UPDOWN_DoAction (UPDOWN_INFO *infoPtr, int delta, int action)
640 {
641     NM_UPDOWN ni;
642 
643     TRACE("%d by %d\n", action, delta);
644 
645     /* check if we can do the modification first */
646     delta *= (action & FLAG_INCR ? 1 : -1) * (infoPtr->MaxVal < infoPtr->MinVal ? -1 : 1);
647     if ( (action & FLAG_INCR) && (action & FLAG_DECR) ) delta = 0;
648 
649     TRACE("current %d, delta: %d\n", infoPtr->CurVal, delta);
650 
651     /* We must notify parent now to obtain permission */
652     ni.iPos = infoPtr->CurVal;
653     ni.iDelta = delta;
654     ni.hdr.hwndFrom = infoPtr->Self;
655     ni.hdr.idFrom   = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
656     ni.hdr.code = UDN_DELTAPOS;
657     if (!SendMessageW(infoPtr->Notify, WM_NOTIFY, ni.hdr.idFrom, (LPARAM)&ni)) {
658         /* Parent said: OK to adjust */
659 
660         /* Now adjust value with (maybe new) delta */
661         if (UPDOWN_OffsetVal (infoPtr, ni.iDelta)) {
662             TRACE("new %d, delta: %d\n", infoPtr->CurVal, ni.iDelta);
663 
664             /* Now take care about our buddy */
665             UPDOWN_SetBuddyInt (infoPtr);
666         }
667     }
668 
669     /* Also, notify it. This message is sent in any case. */
670     SendMessageW( infoPtr->Notify, (infoPtr->dwStyle & UDS_HORZ) ? WM_HSCROLL : WM_VSCROLL,
671                   MAKELONG(SB_THUMBPOSITION, infoPtr->CurVal), (LPARAM)infoPtr->Self);
672 }
673 
674 /***********************************************************************
675  *           UPDOWN_IsEnabled
676  *
677  * Returns TRUE if it is enabled as well as its buddy (if any)
678  *         FALSE otherwise
679  */
680 static BOOL UPDOWN_IsEnabled (const UPDOWN_INFO *infoPtr)
681 {
682     if (!IsWindowEnabled(infoPtr->Self))
683         return FALSE;
684     if(infoPtr->Buddy)
685         return IsWindowEnabled(infoPtr->Buddy);
686     return TRUE;
687 }
688 
689 /***********************************************************************
690  *           UPDOWN_CancelMode
691  *
692  * Deletes any timers, releases the mouse and does  redraw if necessary.
693  * If the control is not in "capture" mode, it does nothing.
694  * If the control was not in cancel mode, it returns FALSE.
695  * If the control was in cancel mode, it returns TRUE.
696  */
697 static BOOL UPDOWN_CancelMode (UPDOWN_INFO *infoPtr)
698 {
699     if (!(infoPtr->Flags & FLAG_PRESSED)) return FALSE;
700 
701     KillTimer (infoPtr->Self, TIMER_AUTOREPEAT);
702     KillTimer (infoPtr->Self, TIMER_ACCEL);
703     KillTimer (infoPtr->Self, TIMER_AUTOPRESS);
704 
705     if (GetCapture() == infoPtr->Self) {
706         NMHDR hdr;
707         hdr.hwndFrom = infoPtr->Self;
708         hdr.idFrom   = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
709         hdr.code = NM_RELEASEDCAPTURE;
710         SendMessageW(infoPtr->Notify, WM_NOTIFY, hdr.idFrom, (LPARAM)&hdr);
711         ReleaseCapture();
712     }
713 
714     infoPtr->Flags &= ~FLAG_PRESSED;
715     InvalidateRect (infoPtr->Self, NULL, FALSE);
716 
717     return TRUE;
718 }
719 
720 /***********************************************************************
721  *           UPDOWN_HandleMouseEvent
722  *
723  * Handle a mouse event for the updown.
724  * 'pt' is the location of the mouse event in client or
725  * windows coordinates.
726  */
727 static void UPDOWN_HandleMouseEvent (UPDOWN_INFO *infoPtr, UINT msg, INT x, INT y)
728 {
729     POINT pt = { x, y };
730     RECT rect;
731     int temp, arrow;
732     TRACKMOUSEEVENT tme;
733 
734     TRACE("msg %04x point %s\n", msg, wine_dbgstr_point(&pt));
735 
736     switch(msg)
737     {
738         case WM_LBUTTONDOWN:  /* Initialise mouse tracking */
739 
740             /* If the buddy is an edit, will set focus to it */
741             if (UPDOWN_IsBuddyEdit(infoPtr)) SetFocus(infoPtr->Buddy);
742 
743             /* Now see which one is the 'active' arrow */
744             arrow = UPDOWN_GetArrowFromPoint (infoPtr, &rect, pt);
745 
746             /* Update the flags if we are in/out */
747             infoPtr->Flags &= ~(FLAG_MOUSEIN | FLAG_ARROW);
748             if (arrow)
749                 infoPtr->Flags |= FLAG_MOUSEIN | arrow;
750             else
751                 if (infoPtr->AccelIndex != -1) infoPtr->AccelIndex = 0;
752 
753             if (infoPtr->Flags & FLAG_ARROW) {
754 
755                 /* Update the CurVal if necessary */
756                 UPDOWN_GetBuddyInt (infoPtr);
757 
758                 /* Set up the correct flags */
759                 infoPtr->Flags |= FLAG_PRESSED;
760 
761                 /* repaint the control */
762                 InvalidateRect (infoPtr->Self, NULL, FALSE);
763 
764                 /* process the click */
765                 temp = (infoPtr->AccelCount && infoPtr->AccelVect) ? infoPtr->AccelVect[0].nInc : 1;
766                 UPDOWN_DoAction (infoPtr, temp, infoPtr->Flags & FLAG_ARROW);
767 
768                 /* now capture all mouse messages */
769                 SetCapture (infoPtr->Self);
770 
771                 /* and startup the first timer */
772                 SetTimer(infoPtr->Self, TIMER_AUTOREPEAT, INITIAL_DELAY, 0);
773             }
774             break;
775 
776         case WM_MOUSEMOVE:
777             /* save the flags to see if any got modified */
778             temp = infoPtr->Flags;
779 
780             /* Now see which one is the 'active' arrow */
781             arrow = UPDOWN_GetArrowFromPoint (infoPtr, &rect, pt);
782 
783             /* Update the flags if we are in/out */
784             infoPtr->Flags &= ~(FLAG_MOUSEIN | FLAG_ARROW);
785             if(arrow) {
786                 infoPtr->Flags |=  FLAG_MOUSEIN | arrow;
787             } else {
788                 if(infoPtr->AccelIndex != -1) infoPtr->AccelIndex = 0;
789             }
790 
791             /* If state changed, redraw the control */
792             if(temp != infoPtr->Flags)
793                  InvalidateRect (infoPtr->Self, NULL, FALSE);
794 
795             /* Set up tracking so the mousein flags can be reset when the 
796              * mouse leaves the control */
797             tme.cbSize = sizeof( tme );
798             tme.dwFlags = TME_LEAVE;
799             tme.hwndTrack = infoPtr->Self;
800             TrackMouseEvent (&tme);
801 
802             break;
803         case WM_MOUSELEAVE:
804             infoPtr->Flags &= ~(FLAG_MOUSEIN | FLAG_ARROW);
805             InvalidateRect (infoPtr->Self, NULL, FALSE);
806             break;
807 
808         default:
809             ERR("Impossible case (msg=%x)!\n", msg);
810     }
811 
812 }
813 
814 /***********************************************************************
815  *           UpDownWndProc
816  */
817 static LRESULT WINAPI UpDownWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
818 {
819     UPDOWN_INFO *infoPtr = UPDOWN_GetInfoPtr (hwnd);
820     int temp;
821     static const WCHAR themeClass[] = {'S','p','i','n',0};
822     HTHEME theme;
823 
824     TRACE("hwnd=%p msg=%04x wparam=%08lx lparam=%08lx\n", hwnd, message, wParam, lParam);
825 
826     if (!infoPtr && (message != WM_CREATE))
827         return DefWindowProcW (hwnd, message, wParam, lParam);
828 
829     switch(message)
830     {
831         case WM_CREATE:
832             infoPtr = (UPDOWN_INFO*)Alloc (sizeof(UPDOWN_INFO));
833             SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
834 
835             /* initialize the info struct */
836             infoPtr->Self = hwnd;
837             infoPtr->Notify = ((LPCREATESTRUCTW)lParam)->hwndParent;
838             infoPtr->dwStyle = ((LPCREATESTRUCTW)lParam)->style;
839             infoPtr->AccelCount = 0;
840             infoPtr->AccelVect = 0;
841             infoPtr->AccelIndex = -1;
842             infoPtr->CurVal = 0;
843             infoPtr->MinVal = 100;
844             infoPtr->MaxVal = 0;
845             infoPtr->Base  = 10; /* Default to base 10  */
846             infoPtr->Buddy = 0;  /* No buddy window yet */
847             infoPtr->Flags = 0;  /* And no flags        */
848 
849             SetWindowLongW (hwnd, GWL_STYLE, infoPtr->dwStyle & ~WS_BORDER);
850 
851             /* Do we pick the buddy win ourselves? */
852             if (infoPtr->dwStyle & UDS_AUTOBUDDY)
853                 UPDOWN_SetBuddy (infoPtr, GetWindow (hwnd, GW_HWNDPREV));
854 
855             OpenThemeData (hwnd, themeClass);
856 
857             TRACE("UpDown Ctrl creation, hwnd=%p\n", hwnd);
858             break;
859 
860         case WM_DESTROY:
861             Free (infoPtr->AccelVect);
862 
863             if(infoPtr->Buddy) RemovePropW(infoPtr->Buddy, BUDDY_UPDOWN_HWND);
864 
865             Free (infoPtr);
866             SetWindowLongPtrW (hwnd, 0, 0);
867             theme = GetWindowTheme (hwnd);
868             CloseThemeData (theme);
869             TRACE("UpDown Ctrl destruction, hwnd=%p\n", hwnd);
870             break;
871 
872         case WM_ENABLE:
873             if (wParam) {
874                 infoPtr->dwStyle &= ~WS_DISABLED;
875             } else {
876                 infoPtr->dwStyle |= WS_DISABLED;
877                 UPDOWN_CancelMode (infoPtr);
878             }
879             InvalidateRect (infoPtr->Self, NULL, FALSE);
880             break;
881 
882         case WM_STYLECHANGED:
883             if (wParam == GWL_STYLE) {
884                 infoPtr->dwStyle = ((LPSTYLESTRUCT)lParam)->styleNew;
885                 InvalidateRect (infoPtr->Self, NULL, FALSE);
886             }
887             break;
888 
889         case WM_THEMECHANGED:
890             theme = GetWindowTheme (hwnd);
891             CloseThemeData (theme);
892             OpenThemeData (hwnd, themeClass);
893             InvalidateRect (hwnd, NULL, FALSE);
894             break;
895 
896         case WM_TIMER:
897            /* is this the auto-press timer? */
898            if(wParam == TIMER_AUTOPRESS) {
899                 KillTimer(hwnd, TIMER_AUTOPRESS);
900                 infoPtr->Flags &= ~(FLAG_PRESSED | FLAG_ARROW);
901                 InvalidateRect(infoPtr->Self, NULL, FALSE);
902            }
903 
904            /* if initial timer, kill it and start the repeat timer */
905            if(wParam == TIMER_AUTOREPEAT) {
906                 KillTimer(hwnd, TIMER_AUTOREPEAT);
907                 /* if no accel info given, used default timer */
908                 if(infoPtr->AccelCount==0 || infoPtr->AccelVect==0) {
909                     infoPtr->AccelIndex = -1;