dlls/gdi32/dibdrv/dc.c

   1 /*
   2  * DIB driver initialization and DC functions.
   3  *
   4  * Copyright 2011 Huw Davies
   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
  21 #include <assert.h>
  22
  23 #include "gdi_private.h"
  24 #include "dibdrv.h"
  25
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(dib);
  29
  30 /***********************************************************************
  31  *           dibdrv_DeleteDC
  32  */
  33 static BOOL CDECL dibdrv_DeleteDC( PHYSDEV dev )
  34 {
  35     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
  36     TRACE("(%p)\n", dev);
  37     DeleteObject(pdev->clip);
  38     return 0;
  39 }
  40
  41 static void calc_shift_and_len(DWORD mask, int *shift, int *len)
  42 {
  43     int s, l;
  44
  45     if(!mask)
  46     {
  47         *shift = *len = 0;
  48         return;
  49     }
  50
  51     s = 0;
  52     while ((mask & 1) == 0)
  53     {
  54         mask >>= 1;
  55         s++;
  56     }
  57     l = 0;
  58     while ((mask & 1) == 1)
  59     {
  60         mask >>= 1;
  61         l++;
  62     }
  63     *shift = s;
  64     *len = l;
  65 }
  66
  67 static void init_bit_fields(dib_info *dib, const DWORD *bit_fields)
  68 {
  69     dib->red_mask    = bit_fields[0];
  70     dib->green_mask  = bit_fields[1];
  71     dib->blue_mask   = bit_fields[2];
  72     calc_shift_and_len(dib->red_mask,   &dib->red_shift,   &dib->red_len);
  73     calc_shift_and_len(dib->green_mask, &dib->green_shift, &dib->green_len);
  74     calc_shift_and_len(dib->blue_mask,  &dib->blue_shift,  &dib->blue_len);
  75 }
  76
  77 static BOOL init_dib(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit_fields, void *bits)
  78 {
  79     dib->bit_count = bi->biBitCount;
  80     dib->width     = bi->biWidth;
  81     dib->height    = bi->biHeight;
  82     dib->stride    = ((dib->width * dib->bit_count + 31) >> 3) & ~3;
  83     dib->bits      = bits;
  84
  85     if(dib->height < 0) /* top-down */
  86     {
  87         dib->height = -dib->height;
  88     }
  89     else /* bottom-up */
  90     {
  91         /* bits always points to the top-left corner and the stride is -ve */
  92         dib->bits    = (BYTE*)dib->bits + (dib->height - 1) * dib->stride;
  93         dib->stride  = -dib->stride;
  94     }
  95
  96     dib->funcs = &funcs_null;
  97
  98     switch(dib->bit_count)
  99     {
 100     case 32:
 101         if(bi->biCompression == BI_RGB)
 102             dib->funcs = &funcs_8888;
 103         else
 104         {
 105             init_bit_fields(dib, bit_fields);
 106             if(dib->red_mask == 0xff0000 && dib->green_mask == 0x00ff00 && dib->blue_mask == 0x0000ff)
 107                 dib->funcs = &funcs_8888;
 108             else
 109                 dib->funcs = &funcs_32;
 110         }
 111         break;
 112
 113     default:
 114         TRACE("bpp %d not supported, will forward to graphics driver.\n", dib->bit_count);
 115         return FALSE;
 116     }
 117
 118     return TRUE;
 119 }
 120
 121 /***********************************************************************
 122  *           dibdrv_SelectBitmap
 123  */
 124 static HBITMAP CDECL dibdrv_SelectBitmap( PHYSDEV dev, HBITMAP bitmap )
 125 {
 126     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSelectBitmap );
 127     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 128     BITMAPOBJ *bmp = GDI_GetObjPtr( bitmap, OBJ_BITMAP );
 129     TRACE("(%p, %p)\n", dev, bitmap);
 130
 131     if (!bmp) return 0;
 132     assert(bmp->dib);
 133
 134     pdev->clip = CreateRectRgn(0, 0, 0, 0);
 135     pdev->defer = 0;
 136
 137     if(!init_dib(&pdev->dib, &bmp->dib->dsBmih, bmp->dib->dsBitfields, bmp->dib->dsBm.bmBits))
 138         pdev->defer |= DEFER_FORMAT;
 139
 140     GDI_ReleaseObj( bitmap );
 141
 142     return next->funcs->pSelectBitmap( next, bitmap );
 143 }
 144
 145 /***********************************************************************
 146  *           dibdrv_SetDeviceClipping
 147  */
 148 static void CDECL dibdrv_SetDeviceClipping( PHYSDEV dev, HRGN vis_rgn, HRGN clip_rgn )
 149 {
 150     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetDeviceClipping );
 151     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 152     TRACE("(%p, %p, %p)\n", dev, vis_rgn, clip_rgn);
 153
 154     CombineRgn( pdev->clip, vis_rgn, clip_rgn, clip_rgn ? RGN_AND : RGN_COPY );
 155     return next->funcs->pSetDeviceClipping( next, vis_rgn, clip_rgn);
 156 }
 157
 158 /***********************************************************************
 159  *           dibdrv_SetROP2
 160  */
 161 static INT CDECL dibdrv_SetROP2( PHYSDEV dev, INT rop )
 162 {
 163     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetROP2 );
 164     dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
 165
 166     calc_and_xor_masks(rop, pdev->pen_color, &pdev->pen_and, &pdev->pen_xor);
 167     update_brush_rop(pdev, rop);
 168
 169     return next->funcs->pSetROP2( next, rop );
 170 }
 171
 172 const DC_FUNCTIONS dib_driver =
 173 {
 174     NULL,                               /* pAbortDoc */
 175     NULL,                               /* pAbortPath */
 176     NULL,                               /* pAlphaBlend */
 177     NULL,                               /* pAngleArc */
 178     NULL,                               /* pArc */
 179     NULL,                               /* pArcTo */
 180     NULL,                               /* pBeginPath */
 181     NULL,                               /* pChoosePixelFormat */
 182     NULL,                               /* pChord */
 183     NULL,                               /* pCloseFigure */
 184     NULL,                               /* pCreateBitmap */
 185     NULL,                               /* pCreateDC */
 186     NULL,                               /* pCreateDIBSection */
 187     NULL,                               /* pDeleteBitmap */
 188     dibdrv_DeleteDC,                    /* pDeleteDC */
 189     NULL,                               /* pDeleteObject */
 190     NULL,                               /* pDescribePixelFormat */
 191     NULL,                               /* pDeviceCapabilities */
 192     NULL,                               /* pEllipse */
 193     NULL,                               /* pEndDoc */
 194     NULL,                               /* pEndPage */
 195     NULL,                               /* pEndPath */
 196     NULL,                               /* pEnumDeviceFonts */
 197     NULL,                               /* pEnumICMProfiles */
 198     NULL,                               /* pExcludeClipRect */
 199     NULL,                               /* pExtDeviceMode */
 200     NULL,                               /* pExtEscape */
 201     NULL,                               /* pExtFloodFill */
 202     NULL,                               /* pExtSelectClipRgn */
 203     NULL,                               /* pExtTextOut */
 204     NULL,                               /* pFillPath */
 205     NULL,                               /* pFillRgn */
 206     NULL,                               /* pFlattenPath */
 207     NULL,                               /* pFrameRgn */
 208     NULL,                               /* pGdiComment */
 209     NULL,                               /* pGetBitmapBits */
 210     NULL,                               /* pGetCharWidth */
 211     NULL,                               /* pGetDIBits */
 212     NULL,                               /* pGetDeviceCaps */
 213     NULL,                               /* pGetDeviceGammaRamp */
 214     NULL,                               /* pGetICMProfile */
 215     NULL,                               /* pGetNearestColor */
 216     NULL,                               /* pGetPixel */
 217     NULL,                               /* pGetPixelFormat */
 218     NULL,                               /* pGetSystemPaletteEntries */
 219     NULL,                               /* pGetTextExtentExPoint */
 220     NULL,                               /* pGetTextMetrics */
 221     NULL,                               /* pIntersectClipRect */
 222     NULL,                               /* pInvertRgn */
 223     dibdrv_LineTo,                      /* pLineTo */
 224     NULL,                               /* pModifyWorldTransform */
 225     NULL,                               /* pMoveTo */
 226     NULL,                               /* pOffsetClipRgn */
 227     NULL,                               /* pOffsetViewportOrg */
 228     NULL,                               /* pOffsetWindowOrg */
 229     NULL,                               /* pPaintRgn */
 230     dibdrv_PatBlt,                      /* pPatBlt */
 231     NULL,                               /* pPie */
 232     NULL,                               /* pPolyBezier */
 233     NULL,                               /* pPolyBezierTo */
 234     NULL,                               /* pPolyDraw */
 235     NULL,                               /* pPolyPolygon */
 236     NULL,                               /* pPolyPolyline */
 237     NULL,                               /* pPolygon */
 238     NULL,                               /* pPolyline */
 239     NULL,                               /* pPolylineTo */
 240     NULL,                               /* pRealizeDefaultPalette */
 241     NULL,                               /* pRealizePalette */
 242     NULL,                               /* pRectangle */
 243     NULL,                               /* pResetDC */
 244     NULL,                               /* pRestoreDC */
 245     NULL,                               /* pRoundRect */
 246     NULL,                               /* pSaveDC */
 247     NULL,                               /* pScaleViewportExt */
 248     NULL,                               /* pScaleWindowExt */
 249     dibdrv_SelectBitmap,                /* pSelectBitmap */
 250     dibdrv_SelectBrush,                 /* pSelectBrush */
 251     NULL,                               /* pSelectClipPath */
 252     NULL,                               /* pSelectFont */
 253     NULL,                               /* pSelectPalette */
 254     dibdrv_SelectPen,                   /* pSelectPen */
 255     NULL,                               /* pSetArcDirection */
 256     NULL,                               /* pSetBitmapBits */
 257     NULL,                               /* pSetBkColor */
 258     NULL,                               /* pSetBkMode */
 259     dibdrv_SetDCBrushColor,             /* pSetDCBrushColor */
 260     dibdrv_SetDCPenColor,               /* pSetDCPenColor */
 261     NULL,                               /* pSetDIBColorTable */
 262     NULL,                               /* pSetDIBits */
 263     NULL,                               /* pSetDIBitsToDevice */
 264     dibdrv_SetDeviceClipping,           /* pSetDeviceClipping */
 265     NULL,                               /* pSetDeviceGammaRamp */
 266     NULL,                               /* pSetLayout */
 267     NULL,                               /* pSetMapMode */
 268     NULL,                               /* pSetMapperFlags */
 269     NULL,                               /* pSetPixel */
 270     NULL,                               /* pSetPixelFormat */
 271     NULL,                               /* pSetPolyFillMode */
 272     dibdrv_SetROP2,                     /* pSetROP2 */
 273     NULL,                               /* pSetRelAbs */
 274     NULL,                               /* pSetStretchBltMode */
 275     NULL,                               /* pSetTextAlign */
 276     NULL,                               /* pSetTextCharacterExtra */
 277     NULL,                               /* pSetTextColor */
 278     NULL,                               /* pSetTextJustification */
 279     NULL,                               /* pSetViewportExt */
 280     NULL,                               /* pSetViewportOrg */
 281     NULL,                               /* pSetWindowExt */
 282     NULL,                               /* pSetWindowOrg */
 283     NULL,                               /* pSetWorldTransform */
 284     NULL,                               /* pStartDoc */
 285     NULL,                               /* pStartPage */
 286     NULL,                               /* pStretchBlt */
 287     NULL,                               /* pStretchDIBits */
 288     NULL,                               /* pStrokeAndFillPath */
 289     NULL,                               /* pStrokePath */
 290     NULL,                               /* pSwapBuffers */
 291     NULL,                               /* pUnrealizePalette */
 292     NULL,                               /* pWidenPath */
 293     NULL,                               /* pwglCopyContext */
 294     NULL,                               /* pwglCreateContext */
 295     NULL,                               /* pwglCreateContextAttribsARB */
 296     NULL,                               /* pwglDeleteContext */
 297     NULL,                               /* pwglGetProcAddress */
 298     NULL,                               /* pwglGetPbufferDCARB */
 299     NULL,                               /* pwglMakeCurrent */
 300     NULL,                               /* pwglMakeContextCurrentARB */
 301     NULL,                               /* pwglSetPixelFormatWINE */
 302     NULL,                               /* pwglShareLists */
 303     NULL,                               /* pwglUseFontBitmapsA */
 304     NULL                                /* pwglUseFontBitmapsW */
 305 };