dlls/comctl32/progress.c

   1 /*
   2  * Progress control
   3  *
   4  * Copyright 1997, 2002 Dimitrie O. Paun
   5  * Copyright 1998, 1999 Eric Kohl
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  * NOTE
  22  *
  23  * This code was audited for completeness against the documented features
  24  * of Comctl32.dll version 6.0 on Sep. 9, 2002, by Dimitrie O. Paun.
  25  *
  26  * Unless otherwise noted, we belive this code to be complete, as per
  27  * the specification mentioned above.
  28  * If you discover missing features, or bugs, please note them below.
  29  *
  30  * TODO
  31  *   --support PBS_MARQUE
  32  *
  33  */
  34
  35 #include <string.h>
  36 #include "winbase.h"
  37 #include "commctrl.h"
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(progress);
  41
  42 typedef struct
  43 {
  44     HWND      Self;         /* The window handle for this control */
  45     INT       CurVal;       /* Current progress value */
  46     INT       MinVal;       /* Minimum progress value */
  47     INT       MaxVal;       /* Maximum progress value */
  48     INT       Step;         /* Step to use on PMB_STEPIT */
  49     COLORREF  ColorBar;     /* Bar color */
  50     COLORREF  ColorBk;      /* Background color */
  51     HFONT     Font;         /* Handle to font (not unused) */
  52 } PROGRESS_INFO;
  53
  54 /* Control configuration constants */
  55
  56 #define LED_GAP    2
  57
  58 /***********************************************************************
  59  * PROGRESS_Invalidate
  60  *
  61  * Invalide the range between old and new pos.
  62  */
  63 static void PROGRESS_Invalidate( PROGRESS_INFO *infoPtr, INT old, INT new )
  64 {
  65     LONG style = GetWindowLongW (infoPtr->Self, GWL_STYLE);
  66     RECT rect;
  67     int oldPos, newPos, ledWidth;
  68
  69     GetClientRect (infoPtr->Self, &rect);
  70     InflateRect(&rect, -1, -1);
  71
  72     if (style & PBS_VERTICAL)
  73     {
  74         oldPos = rect.bottom - MulDiv (old - infoPtr->MinVal, rect.bottom - rect.top,
  75                                        infoPtr->MaxVal - infoPtr->MinVal);
  76         newPos = rect.bottom - MulDiv (new - infoPtr->MinVal, rect.bottom - rect.top,
  77                                        infoPtr->MaxVal - infoPtr->MinVal);
  78         ledWidth = MulDiv (rect.right - rect.left, 2, 3);
  79         rect.top = min( oldPos, newPos );
  80         rect.bottom = max( oldPos, newPos );
  81         if (!(style & PBS_SMOOTH)) rect.top -= ledWidth;
  82         InvalidateRect( infoPtr->Self, &rect, oldPos < newPos );
  83     }
  84     else
  85     {
  86         oldPos = rect.left + MulDiv (old - infoPtr->MinVal, rect.right - rect.left,
  87                                      infoPtr->MaxVal - infoPtr->MinVal);
  88         newPos = rect.left + MulDiv (new - infoPtr->MinVal, rect.right - rect.left,
  89                                      infoPtr->MaxVal - infoPtr->MinVal);
  90         ledWidth = MulDiv (rect.bottom - rect.top, 2, 3);
  91         rect.left = min( oldPos, newPos );
  92         rect.right = max( oldPos, newPos );
  93         if (!(style & PBS_SMOOTH)) rect.right += ledWidth;
  94         InvalidateRect( infoPtr->Self, &rect, oldPos > newPos );
  95     }
  96 }
  97
  98
  99 /***********************************************************************
 100  * PROGRESS_Draw
 101  * Draws the progress bar.
 102  */
 103 static LRESULT PROGRESS_Draw (PROGRESS_INFO *infoPtr, HDC hdc)
 104 {
 105     HBRUSH hbrBar, hbrBk;
 106     int rightBar, rightMost, ledWidth;
 107     RECT rect;
 108     DWORD dwStyle;
 109
 110     TRACE("(infoPtr=%p, hdc=%p)\n", infoPtr, hdc);
 111
 112     /* get the required bar brush */
 113     if (infoPtr->ColorBar == CLR_DEFAULT)
 114         hbrBar = GetSysColorBrush(COLOR_HIGHLIGHT);
 115     else
 116         hbrBar = CreateSolidBrush (infoPtr->ColorBar);
 117
 118     if (infoPtr->ColorBk == CLR_DEFAULT)
 119         hbrBk = GetSysColorBrush(COLOR_3DFACE);
 120     else
 121         hbrBk = CreateSolidBrush(infoPtr->ColorBk);
 122
 123     /* get client rectangle */
 124     GetClientRect (infoPtr->Self, &rect);
 125     FrameRect( hdc, &rect, hbrBk );
 126     InflateRect(&rect, -1, -1);
 127
 128     /* get the window style */
 129     dwStyle = GetWindowLongW (infoPtr->Self, GWL_STYLE);
 130
 131     /* compute extent of progress bar */
 132     if (dwStyle & PBS_VERTICAL) {
 133         rightBar  = rect.bottom -
 134                     MulDiv (infoPtr->CurVal - infoPtr->MinVal,
 135                             rect.bottom - rect.top,
 136                             infoPtr->MaxVal - infoPtr->MinVal);
 137         ledWidth  = MulDiv (rect.right - rect.left, 2, 3);
 138         rightMost = rect.top;
 139     } else {
 140         rightBar = rect.left +
 141                    MulDiv (infoPtr->CurVal - infoPtr->MinVal,
 142                            rect.right - rect.left,
 143                            infoPtr->MaxVal - infoPtr->MinVal);
 144         ledWidth = MulDiv (rect.bottom - rect.top, 2, 3);
 145         rightMost = rect.right;
 146     }
 147
 148     /* now draw the bar */
 149     if (dwStyle & PBS_SMOOTH)
 150     {
 151         if (dwStyle & PBS_VERTICAL)
 152         {
 153             INT old_top = rect.top;
 154             rect.top = rightBar;
 155             FillRect(hdc, &rect, hbrBar);
 156             rect.bottom = rect.top;
 157             rect.top = old_top;
 158             FillRect(hdc, &rect, hbrBk);
 159         }
 160         else
 161         {
 162             INT old_right = rect.right;
 163             rect.right = rightBar;
 164             FillRect(hdc, &rect, hbrBar);
 165             rect.left = rect.right;
 166             rect.right = old_right;
 167             FillRect(hdc, &rect, hbrBk);
 168         }
 169     } else {
 170         if (dwStyle & PBS_VERTICAL) {
 171             while(rect.bottom > rightBar) {
 172                 rect.top = rect.bottom - ledWidth;
 173                 if (rect.top < rightMost)
 174                     rect.top = rightMost;
 175                 FillRect(hdc, &rect, hbrBar);
 176                 rect.bottom = rect.top;
 177                 rect.top -= LED_GAP;
 178                 if (rect.top <= rightBar) break;
 179                 FillRect(hdc, &rect, hbrBk);
 180                 rect.bottom = rect.top;
 181             }
 182             rect.top = rightMost;
 183             FillRect(hdc, &rect, hbrBk);
 184         } else {
 185             while(rect.left < rightBar) {
 186                 rect.right = rect.left + ledWidth;
 187                 if (rect.right > rightMost)
 188                     rect.right = rightMost;
 189                 FillRect(hdc, &rect, hbrBar);
 190                 rect.left = rect.right;
 191                 rect.right += LED_GAP;
 192                 if (rect.right >= rightBar) break;
 193                 FillRect(hdc, &rect, hbrBk);
 194                 rect.left = rect.right;
 195             }
 196             rect.right = rightMost;
 197             FillRect(hdc, &rect, hbrBk);
 198         }
 199     }
 200
 201     /* delete bar brush */
 202     if (infoPtr->ColorBar != CLR_DEFAULT) DeleteObject (hbrBar);
 203     if (infoPtr->ColorBk != CLR_DEFAULT) DeleteObject (hbrBk);
 204
 205     return 0;
 206 }
 207
 208
 209 /***********************************************************************
 210  * PROGRESS_Paint
 211  * Draw the progress bar. The background need not be erased.
 212  * If dc!=0, it draws on it
 213  */
 214 static LRESULT PROGRESS_Paint (PROGRESS_INFO *infoPtr, HDC hdc)
 215 {
 216     PAINTSTRUCT ps;
 217     if (hdc) return PROGRESS_Draw (infoPtr, hdc);
 218     hdc = BeginPaint (infoPtr->Self, &ps);
 219     PROGRESS_Draw (infoPtr, hdc);
 220     EndPaint (infoPtr->Self, &ps);
 221     return 0;
 222 }
 223
 224
 225 /***********************************************************************
 226  *           PROGRESS_CoercePos
 227  * Makes sure the current position (CurVal) is within bounds.
 228  */
 229 static void PROGRESS_CoercePos(PROGRESS_INFO *infoPtr)
 230 {
 231     if(infoPtr->CurVal < infoPtr->MinVal)
 232         infoPtr->CurVal = infoPtr->MinVal;
 233     if(infoPtr->CurVal > infoPtr->MaxVal)
 234         infoPtr->CurVal = infoPtr->MaxVal;
 235 }
 236
 237
 238 /***********************************************************************
 239  *           PROGRESS_SetFont
 240  * Set new Font for progress bar
 241  */
 242 static HFONT PROGRESS_SetFont (PROGRESS_INFO *infoPtr, HFONT hFont, BOOL bRedraw)
 243 {
 244     HFONT hOldFont = infoPtr->Font;
 245     infoPtr->Font = hFont;
 246     /* Since infoPtr->Font is not used, there is no need for repaint */
 247     return hOldFont;
 248 }
 249
 250 static DWORD PROGRESS_SetRange (PROGRESS_INFO *infoPtr, int low, int high)
 251 {
 252     DWORD res = MAKELONG(LOWORD(infoPtr->MinVal), LOWORD(infoPtr->MaxVal));
 253
 254     /* if nothing changes, simply return */
 255     if(infoPtr->MinVal == low && infoPtr->MaxVal == high) return res;
 256
 257     infoPtr->MinVal = low;
 258     infoPtr->MaxVal = high;
 259     PROGRESS_CoercePos(infoPtr);
 260     return res;
 261 }
 262
 263 /***********************************************************************
 264  *           ProgressWindowProc
 265  */
 266 static LRESULT WINAPI ProgressWindowProc(HWND hwnd, UINT message,
 267                                   WPARAM wParam, LPARAM lParam)
 268 {
 269     PROGRESS_INFO *infoPtr;
 270
 271     TRACE("hwnd=%p msg=%04x wparam=%x lParam=%lx\n", hwnd, message, wParam, lParam);
 272
 273     infoPtr = (PROGRESS_INFO *)GetWindowLongW(hwnd, 0);
 274
 275     if (!infoPtr && message != WM_CREATE)
 276         return DefWindowProcW( hwnd, message, wParam, lParam );
 277
 278     switch(message) {
 279     case WM_CREATE:
 280     {
 281         DWORD dwExStyle = GetWindowLongW (hwnd, GWL_EXSTYLE);
 282         dwExStyle &= ~(WS_EX_CLIENTEDGE | WS_EX_WINDOWEDGE);
 283         dwExStyle |= WS_EX_STATICEDGE;
 284         SetWindowLongW (hwnd, GWL_EXSTYLE, dwExStyle);
 285         /* Force recalculation of a non-client area */
 286         SetWindowPos(hwnd, 0, 0, 0, 0, 0,
 287             SWP_FRAMECHANGED | SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
 288
 289         /* allocate memory for info struct */
 290         infoPtr = (PROGRESS_INFO *)COMCTL32_Alloc (sizeof(PROGRESS_INFO));
 291         if (!infoPtr) return -1;
 292         SetWindowLongW (hwnd, 0, (DWORD)infoPtr);
 293
 294         /* initialize the info struct */
 295         infoPtr->Self = hwnd;
 296         infoPtr->MinVal = 0;
 297         infoPtr->MaxVal = 100;
 298         infoPtr->CurVal = 0;
 299         infoPtr->Step = 10;
 300         infoPtr->ColorBar = CLR_DEFAULT;
 301         infoPtr->ColorBk = CLR_DEFAULT;
 302         infoPtr->Font = 0;
 303         TRACE("Progress Ctrl creation, hwnd=%p\n", hwnd);
 304         return 0;
 305     }
 306
 307     case WM_DESTROY:
 308         TRACE("Progress Ctrl destruction, hwnd=%p\n", hwnd);
 309         COMCTL32_Free (infoPtr);
 310         SetWindowLongW(hwnd, 0, 0);
 311         return 0;
 312
 313     case WM_GETFONT:
 314         return (LRESULT)infoPtr->Font;
 315
 316     case WM_SETFONT:
 317         return (LRESULT)PROGRESS_SetFont(infoPtr, (HFONT)wParam, (BOOL)lParam);
 318
 319     case WM_PAINT:
 320         return PROGRESS_Paint (infoPtr, (HDC)wParam);
 321
 322     case PBM_DELTAPOS:
 323     {
 324         INT oldVal;
 325         oldVal = infoPtr->CurVal;
 326         if(wParam != 0) {
 327             infoPtr->CurVal += (INT)wParam;
 328             PROGRESS_CoercePos (infoPtr);
 329             TRACE("PBM_DELTAPOS: current pos changed from %d to %d\n", oldVal, infoPtr->CurVal);
 330             PROGRESS_Invalidate( infoPtr, oldVal, infoPtr->CurVal );
 331         }
 332         return oldVal;
 333     }
 334
 335     case PBM_SETPOS:
 336     {
 337         INT oldVal;
 338         oldVal = infoPtr->CurVal;
 339         if(oldVal != wParam) {
 340             infoPtr->CurVal = (INT)wParam;
 341             PROGRESS_CoercePos(infoPtr);
 342             TRACE("PBM_SETPOS: current pos changed from %d to %d\n", oldVal, infoPtr->CurVal);
 343             PROGRESS_Invalidate( infoPtr, oldVal, infoPtr->CurVal );
 344         }
 345         return oldVal;
 346     }
 347
 348     case PBM_SETRANGE:
 349         return PROGRESS_SetRange (infoPtr, (int)LOWORD(lParam), (int)HIWORD(lParam));
 350
 351     case PBM_SETSTEP:
 352     {
 353         INT oldStep;
 354         oldStep = infoPtr->Step;
 355         infoPtr->Step = (INT)wParam;
 356         return oldStep;
 357     }
 358
 359     case PBM_STEPIT:
 360     {
 361         INT oldVal;
 362         oldVal = infoPtr->CurVal;
 363         infoPtr->CurVal += infoPtr->Step;
 364         if(infoPtr->CurVal > infoPtr->MaxVal)
 365             infoPtr->CurVal = infoPtr->MinVal;
 366         if(oldVal != infoPtr->CurVal)
 367         {
 368             TRACE("PBM_STEPIT: current pos changed from %d to %d\n", oldVal, infoPtr->CurVal);
 369             PROGRESS_Invalidate( infoPtr, oldVal, infoPtr->CurVal );
 370         }
 371         return oldVal;
 372     }
 373
 374     case PBM_SETRANGE32:
 375         return PROGRESS_SetRange (infoPtr, (int)wParam, (int)lParam);
 376
 377     case PBM_GETRANGE:
 378         if (lParam) {
 379             ((PPBRANGE)lParam)->iLow = infoPtr->MinVal;
 380             ((PPBRANGE)lParam)->iHigh = infoPtr->MaxVal;
 381         }
 382         return wParam ? infoPtr->MinVal : infoPtr->MaxVal;
 383
 384     case PBM_GETPOS:
 385         return infoPtr->CurVal;
 386
 387     case PBM_SETBARCOLOR:
 388         infoPtr->ColorBar = (COLORREF)lParam;
 389         InvalidateRect(hwnd, NULL, TRUE);
 390         return 0;
 391
 392     case PBM_SETBKCOLOR:
 393         infoPtr->ColorBk = (COLORREF)lParam;
 394         InvalidateRect(hwnd, NULL, TRUE);
 395         return 0;
 396
 397     default:
 398         if ((message >= WM_USER) && (message < WM_APP))
 399             ERR("unknown msg %04x wp=%04x lp=%08lx\n", message, wParam, lParam );
 400         return DefWindowProcW( hwnd, message, wParam, lParam );
 401     }
 402 }
 403
 404
 405 /***********************************************************************
 406  * PROGRESS_Register [Internal]
 407  *
 408  * Registers the progress bar window class.
 409  */
 410 VOID PROGRESS_Register (void)
 411 {
 412     WNDCLASSW wndClass;
 413
 414     ZeroMemory (&wndClass, sizeof(wndClass));
 415     wndClass.style         = CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
 416     wndClass.lpfnWndProc   = (WNDPROC)ProgressWindowProc;
 417     wndClass.cbClsExtra    = 0;
 418     wndClass.cbWndExtra    = sizeof (PROGRESS_INFO *);
 419     wndClass.hCursor       = LoadCursorW (0, IDC_ARROWW);
 420     wndClass.lpszClassName = PROGRESS_CLASSW;
 421
 422     RegisterClassW (&wndClass);
 423 }
 424
 425
 426 /***********************************************************************
 427  * PROGRESS_Unregister [Internal]
 428  *
 429  * Unregisters the progress bar window class.
 430  */
 431 VOID PROGRESS_Unregister (void)
 432 {
 433     UnregisterClassW (PROGRESS_CLASSW, (HINSTANCE)NULL);
 434 }