controls/static.c

   1 /*
   2  * Static control
   3  *
   4  * Copyright  David W. Metcalfe, 1993
   5  *
   6  */
   7
   8 static char Copyright[] = "Copyright  David W. Metcalfe, 1993";
   9
  10 #include <stdio.h>
  11 #include <windows.h>
  12 #include "win.h"
  13 #include "user.h"
  14
  15 extern void DEFWND_SetText( HWND hwnd, LPSTR text );  /* windows/defwnd.c */
  16
  17 static LONG PaintTextfn(HWND hwnd);
  18 static LONG PaintRectfn(HWND hwnd);
  19 static LONG PaintFramefn(HWND hwnd);
  20 static LONG PaintIconfn(HWND hwnd);
  21
  22
  23 static COLORREF color_windowframe, color_background, color_window,
  24                                                      color_windowtext;
  25
  26 #define NOTIFY_PARENT(hWndCntrl, wNotifyCode) \
  27         SendMessage(GetParent(hWndCntrl), WM_COMMAND, \
  28                     GetDlgCtrlID(hWndCntrl), MAKELPARAM(hWndCntrl, wNotifyCode));
  29 #define DIM(array)      ((sizeof array)/(sizeof array[0]))
  30
  31 typedef struct
  32 {
  33     LONG (*paintfn)();
  34 } STATICFN;
  35
  36 #define MAX_STATIC_TYPE  12
  37
  38 static STATICFN staticfn[MAX_STATIC_TYPE] =
  39 {
  40     { (LONG(*)())PaintTextfn },                    /* SS_LEFT */
  41     { (LONG(*)())PaintTextfn },                    /* SS_CENTER */
  42     { (LONG(*)())PaintTextfn },                    /* SS_RIGHT */
  43     { (LONG(*)())PaintIconfn },                    /* SS_ICON */
  44     { (LONG(*)())PaintRectfn },                    /* SS_BLACKRECT */
  45     { (LONG(*)())PaintRectfn },                    /* SS_GRAYRECT */
  46     { (LONG(*)())PaintRectfn },                    /* SS_WHITERECT */
  47     { (LONG(*)())PaintFramefn },                   /* SS_BLACKFRAME */
  48     { (LONG(*)())PaintFramefn },                   /* SS_GRAYFRAME */
  49     { (LONG(*)())PaintFramefn },                   /* SS_WHITEFRAME */
  50     { (LONG(*)())PaintTextfn },                    /* SS_SIMPLE */
  51     { (LONG(*)())PaintTextfn }                     /* SS_LEFTNOWORDWRAP */
  52 };
  53
  54
  55 LONG StaticWndProc(HWND hWnd, WORD uMsg, WORD wParam, LONG lParam)
  56 {
  57         LONG lResult = 0;
  58         HDC hDC;
  59         RECT rc;
  60         LPSTR textPtr;
  61
  62         WND *wndPtr = WIN_FindWndPtr(hWnd);
  63         LONG style = wndPtr->dwStyle & 0x0000000F;
  64
  65         switch (uMsg) {
  66         case WM_ENABLE:
  67             InvalidateRect(hWnd, NULL, FALSE);
  68             break;
  69
  70         case WM_NCCREATE:
  71             if (style == SS_ICON)
  72             {
  73                   /* Note: we use wndPtr->hText to store the icon handle */
  74                 CREATESTRUCT * createStruct = (CREATESTRUCT *)lParam;
  75                 if (createStruct->lpszName)
  76                     wndPtr->hText = LoadIcon( createStruct->hInstance,
  77                                               createStruct->lpszName );
  78                 return 1;
  79             }
  80             else return DefWindowProc(hWnd, uMsg, wParam, lParam);
  81
  82         case WM_NCDESTROY:
  83             if (style == SS_ICON)
  84             {
  85                 if (wndPtr->hText) DestroyIcon( wndPtr->hText );
  86                 wndPtr->hText = 0;
  87                 return 0;
  88             }
  89             else return DefWindowProc(hWnd, uMsg, wParam, lParam);
  90
  91         case WM_CREATE:
  92             if (style < 0L || style >= (LONG)DIM(staticfn)) {
  93                 lResult = -1L;
  94                 break;
  95                 }
  96             /* initialise colours */
  97             color_windowframe  = GetSysColor(COLOR_WINDOWFRAME);
  98             color_background   = GetSysColor(COLOR_BACKGROUND);
  99             color_window       = GetSysColor(COLOR_WINDOW);
 100             color_windowtext   = GetSysColor(COLOR_WINDOWTEXT);
 101             lResult = 0L;
 102             if (style == SS_ICON) {
 103 /*
 104                 SetWindowPos(hWnd, (HWND)NULL, 0, 0, 32, 32,
 105                                 SWP_NOZORDER | SWP_NOMOVE);
 106 */
 107                 }
 108             break;
 109
 110         case WM_PAINT:
 111             if (staticfn[style].paintfn)
 112                 (staticfn[style].paintfn)(hWnd);
 113             break;
 114
 115         case WM_SYSCOLORCHANGE:
 116             color_windowframe  = GetSysColor(COLOR_WINDOWFRAME);
 117             color_background   = GetSysColor(COLOR_BACKGROUND);
 118             color_window       = GetSysColor(COLOR_WINDOW);
 119             color_windowtext   = GetSysColor(COLOR_WINDOWTEXT);
 120             InvalidateRect(hWnd, NULL, TRUE);
 121             break;
 122
 123         case WM_SETTEXT:
 124             if (style == SS_ICON) break;
 125             DEFWND_SetText( hWnd, (LPSTR)lParam );
 126             InvalidateRect( hWnd, NULL, FALSE );
 127             UpdateWindow( hWnd );
 128             break;
 129
 130         case WM_NCHITTEST:
 131             return HTTRANSPARENT;
 132
 133         case STM_GETICON:
 134             if (style != SS_ICON) return 0;
 135             return (HICON)wndPtr->hText;
 136
 137         case STM_SETICON:
 138             if (style != SS_ICON) return 0;
 139             if (wndPtr->hText) DestroyIcon( wndPtr->hText );
 140             wndPtr->hText = wParam;
 141             InvalidateRect( hWnd, NULL, TRUE );
 142             UpdateWindow( hWnd );
 143             return 0;
 144
 145         default:
 146                 lResult = DefWindowProc(hWnd, uMsg, wParam, lParam);
 147                 break;
 148         }
 149
 150         return lResult;
 151 }
 152
 153
 154 static LONG PaintTextfn(HWND hwnd)
 155 {
 156     PAINTSTRUCT ps;
 157     RECT rc;
 158     HDC hdc;
 159     HBRUSH hBrush;
 160     HANDLE hText;
 161     char *text;
 162     int textlen;
 163     WORD wFormat;
 164
 165     WND *wndPtr = WIN_FindWndPtr(hwnd);
 166     LONG style = wndPtr->dwStyle;
 167
 168     hdc = BeginPaint(hwnd, &ps);
 169     GetClientRect(hwnd, &rc);
 170
 171     textlen = GetWindowTextLength(hwnd);
 172     hText = USER_HEAP_ALLOC(0, textlen+1);
 173     text = USER_HEAP_ADDR(hText);
 174     GetWindowText(hwnd, text, textlen+1);
 175
 176     switch (style & 0x0000000F)
 177     {
 178     case SS_LEFT:
 179         wFormat = DT_LEFT | DT_EXPANDTABS | DT_WORDBREAK;
 180         break;
 181
 182     case SS_CENTER:
 183         wFormat = DT_CENTER | DT_EXPANDTABS | DT_WORDBREAK;
 184         break;
 185
 186     case SS_RIGHT:
 187         wFormat = DT_RIGHT | DT_EXPANDTABS | DT_WORDBREAK;
 188         break;
 189
 190     case SS_SIMPLE:
 191         wFormat = DT_LEFT | DT_SINGLELINE | DT_VCENTER;
 192         break;
 193
 194     case SS_LEFTNOWORDWRAP:
 195         wFormat = DT_LEFT | DT_SINGLELINE | DT_EXPANDTABS | DT_VCENTER;
 196         break;
 197     }
 198
 199     if (style & SS_NOPREFIX)
 200         wFormat |= DT_NOPREFIX;
 201
 202     hBrush = SendMessage(GetParent(hwnd), WM_CTLCOLOR, (WORD)hdc,
 203                     MAKELONG(hwnd, CTLCOLOR_STATIC));
 204     if (hBrush == (HBRUSH)NULL) hBrush = GetStockObject(WHITE_BRUSH);
 205     FillRect(hdc, &rc, hBrush);
 206     DrawText(hdc, text, textlen, &rc, wFormat);
 207
 208     USER_HEAP_FREE(hText);
 209     EndPaint(hwnd, &ps);
 210 }
 211
 212 static LONG PaintRectfn(HWND hwnd)
 213 {
 214     PAINTSTRUCT ps;
 215     RECT rc;
 216     HDC hdc;
 217     HPEN hOldPen, hPen;
 218     HBRUSH hOldBrush, hBrush;
 219
 220     WND *wndPtr = WIN_FindWndPtr(hwnd);
 221
 222     hdc = BeginPaint(hwnd, &ps);
 223     GetClientRect(hwnd, &rc);
 224
 225     switch (wndPtr->dwStyle & 0x0000000F)
 226     {
 227     case SS_BLACKRECT:
 228         hPen = CreatePen(PS_SOLID, 1, color_windowframe);
 229         hBrush = CreateSolidBrush(color_windowframe);
 230         break;
 231
 232     case SS_GRAYRECT:
 233         hPen = CreatePen(PS_SOLID, 1, color_background);
 234         hBrush = CreateSolidBrush(color_background);
 235         break;
 236
 237     case SS_WHITERECT:
 238         hPen = CreatePen(PS_SOLID, 1, color_window);
 239         hBrush = CreateSolidBrush(color_window);
 240         break;
 241     }
 242
 243     hOldPen = (HPEN)SelectObject(hdc, (HANDLE)hPen);
 244     hOldBrush = (HBRUSH)SelectObject(hdc, (HANDLE)hBrush);
 245     Rectangle(hdc, rc.left, rc.top, rc.right, rc.bottom);
 246
 247     SelectObject(hdc, (HANDLE)hOldPen);
 248     SelectObject(hdc, (HANDLE)hOldBrush);
 249     DeleteObject((HANDLE)hPen);
 250     DeleteObject((HANDLE)hBrush);
 251
 252     EndPaint(hwnd, &ps);
 253 }
 254
 255 static LONG PaintFramefn(HWND hwnd)
 256 {
 257     PAINTSTRUCT ps;
 258     RECT rc;
 259     HDC hdc;
 260     HPEN hOldPen, hPen;
 261     HBRUSH hOldBrush, hBrush;
 262
 263     WND *wndPtr = WIN_FindWndPtr(hwnd);
 264
 265     hdc = BeginPaint(hwnd, &ps);
 266     GetClientRect(hwnd, &rc);
 267
 268     switch (wndPtr->dwStyle & 0x0000000F)
 269     {
 270     case SS_BLACKFRAME:
 271         hPen = CreatePen(PS_SOLID, 1, color_windowframe);
 272         break;
 273
 274     case SS_GRAYFRAME:
 275         hPen = CreatePen(PS_SOLID, 1, color_background);
 276         break;
 277
 278     case SS_WHITEFRAME:
 279         hPen = CreatePen(PS_SOLID, 1, color_window);
 280         break;
 281     }
 282
 283     hBrush = CreateSolidBrush(color_window);
 284     hOldPen = (HPEN)SelectObject(hdc, (HANDLE)hPen);
 285     hOldBrush = (HBRUSH)SelectObject(hdc, (HANDLE)hBrush);
 286     Rectangle(hdc, rc.left, rc.top, rc.right, rc.bottom);
 287
 288     SelectObject(hdc, (HANDLE)hOldPen);
 289     SelectObject(hdc, (HANDLE)hOldBrush);
 290     DeleteObject((HANDLE)hPen);
 291     DeleteObject((HANDLE)hBrush);
 292
 293     EndPaint(hwnd, &ps);
 294 }
 295
 296
 297 static LONG PaintIconfn(HWND hwnd)
 298 {
 299     WND         *wndPtr;
 300     PAINTSTRUCT ps;
 301     RECT        rc;
 302     HDC         hdc;
 303
 304     wndPtr = WIN_FindWndPtr(hwnd);
 305     hdc = BeginPaint(hwnd, &ps);
 306     GetClientRect(hwnd, &rc);
 307     FillRect(hdc, &rc, GetStockObject(WHITE_BRUSH));
 308     if (wndPtr->hText) DrawIcon(hdc, rc.left, rc.top, wndPtr->hText );
 309     EndPaint(hwnd, &ps);
 310 }