Sweden-Number/dlls/gdi32/dibdrv/dc.c

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/*
* DIB driver initialization and DC functions.
*
* Copyright 2011 Huw Davies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include "gdi_private.h"
#include "dibdrv.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(dib);
static void calc_shift_and_len(DWORD mask, int *shift, int *len)
{
int s, l;
if(!mask)
{
*shift = *len = 0;
return;
}
s = 0;
while ((mask & 1) == 0)
{
mask >>= 1;
s++;
}
l = 0;
while ((mask & 1) == 1)
{
mask >>= 1;
l++;
}
*shift = s;
*len = l;
}
static void init_bit_fields(dib_info *dib, const DWORD *bit_fields)
{
dib->red_mask = bit_fields[0];
dib->green_mask = bit_fields[1];
dib->blue_mask = bit_fields[2];
calc_shift_and_len(dib->red_mask, &dib->red_shift, &dib->red_len);
calc_shift_and_len(dib->green_mask, &dib->green_shift, &dib->green_len);
calc_shift_and_len(dib->blue_mask, &dib->blue_shift, &dib->blue_len);
}
static BOOL init_dib_info(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit_fields, void *bits)
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{
static const DWORD bit_fields_888[3] = {0xff0000, 0x00ff00, 0x0000ff};
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dib->bit_count = bi->biBitCount;
dib->width = bi->biWidth;
dib->height = bi->biHeight;
dib->stride = ((dib->width * dib->bit_count + 31) >> 3) & ~3;
dib->bits = bits;
if(dib->height < 0) /* top-down */
{
dib->height = -dib->height;
}
else /* bottom-up */
{
/* bits always points to the top-left corner and the stride is -ve */
dib->bits = (BYTE*)dib->bits + (dib->height - 1) * dib->stride;
dib->stride = -dib->stride;
}
dib->funcs = &funcs_null;
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switch(dib->bit_count)
{
case 32:
if(bi->biCompression == BI_RGB)
bit_fields = bit_fields_888;
init_bit_fields(dib, bit_fields);
if(dib->red_mask == 0xff0000 && dib->green_mask == 0x00ff00 && dib->blue_mask == 0x0000ff)
dib->funcs = &funcs_8888;
else
dib->funcs = &funcs_32;
break;
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default:
TRACE("bpp %d not supported, will forward to graphics driver.\n", dib->bit_count);
return FALSE;
}
return TRUE;
}
BOOL init_dib_info_from_packed(dib_info *dib, const BITMAPINFOHEADER *bi, WORD usage)
{
DWORD *masks = NULL;
RGBQUAD *color_table = NULL;
BYTE *ptr = (BYTE*)bi + bi->biSize;
int num_colors = bi->biClrUsed;
if(bi->biCompression == BI_BITFIELDS)
{
masks = (DWORD *)ptr;
ptr += 3 * sizeof(DWORD);
}
if(!num_colors && bi->biBitCount <= 8) num_colors = 1 << bi->biBitCount;
if(num_colors) color_table = (RGBQUAD*)ptr;
if(usage == DIB_PAL_COLORS)
ptr += num_colors * sizeof(WORD);
else
ptr += num_colors * sizeof(*color_table);
return init_dib_info(dib, bi, masks, ptr);
}
static void clear_dib_info(dib_info *dib)
{
dib->bits = NULL;
}
/**********************************************************************
* free_dib_info
*
* Free the resources associated with a dib and optionally the bits
*/
void free_dib_info(dib_info *dib, BOOL free_bits)
{
if(free_bits)
{
HeapFree(GetProcessHeap(), 0, dib->bits);
dib->bits = NULL;
}
}
void copy_dib_color_info(dib_info *dst, const dib_info *src)
{
dst->bit_count = src->bit_count;
dst->red_mask = src->red_mask;
dst->green_mask = src->green_mask;
dst->blue_mask = src->blue_mask;
dst->red_len = src->red_len;
dst->green_len = src->green_len;
dst->blue_len = src->blue_len;
dst->red_shift = src->red_shift;
dst->green_shift = src->green_shift;
dst->blue_shift = src->blue_shift;
dst->funcs = src->funcs;
}
static BOOL dib_formats_match(const dib_info *d1, const dib_info *d2)
{
if(d1->bit_count != d2->bit_count) return FALSE;
switch(d1->bit_count)
{
case 24: return TRUE;
case 32:
case 16:
return (d1->red_mask == d2->red_mask) && (d1->green_mask == d2->green_mask) &&
(d1->blue_mask == d2->blue_mask);
default:
ERR("Unexpected depth %d\n", d1->bit_count);
return FALSE;
}
}
/**************************************************************
* convert_dib
*
* Converts src into the format specified in dst.
*
* FIXME: At the moment this always creates a top-down dib,
* do we want to give the option of bottom-up?
*/
BOOL convert_dib(dib_info *dst, const dib_info *src)
{
INT y;
dst->height = src->height;
dst->width = src->width;
dst->stride = ((dst->width * dst->bit_count + 31) >> 3) & ~3;
dst->bits = NULL;
if(dib_formats_match(src, dst))
{
dst->bits = HeapAlloc(GetProcessHeap(), 0, dst->height * dst->stride);
if(src->stride > 0)
memcpy(dst->bits, src->bits, dst->height * dst->stride);
else
{
BYTE *src_bits = src->bits;
BYTE *dst_bits = dst->bits;
for(y = 0; y < dst->height; y++)
{
memcpy(dst_bits, src_bits, dst->stride);
dst_bits += dst->stride;
src_bits += src->stride;
}
}
return TRUE;
}
FIXME("Format conversion not implemented\n");
return FALSE;
}
/***********************************************************************
* dibdrv_DeleteDC
*/
static BOOL CDECL dibdrv_DeleteDC( PHYSDEV dev )
{
dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
TRACE("(%p)\n", dev);
DeleteObject(pdev->clip);
free_pattern_brush(pdev);
free_dib_info(&pdev->dib, FALSE);
return 0;
}
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/***********************************************************************
* dibdrv_SelectBitmap
*/
static HBITMAP CDECL dibdrv_SelectBitmap( PHYSDEV dev, HBITMAP bitmap )
{
PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSelectBitmap );
dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
BITMAPOBJ *bmp = GDI_GetObjPtr( bitmap, OBJ_BITMAP );
TRACE("(%p, %p)\n", dev, bitmap);
if (!bmp) return 0;
assert(bmp->dib);
pdev->clip = CreateRectRgn(0, 0, 0, 0);
pdev->defer = 0;
clear_dib_info(&pdev->dib);
clear_dib_info(&pdev->brush_dib);
pdev->brush_and_bits = pdev->brush_xor_bits = NULL;
if(!init_dib_info(&pdev->dib, &bmp->dib->dsBmih, bmp->dib->dsBitfields, bmp->dib->dsBm.bmBits))
pdev->defer |= DEFER_FORMAT;
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GDI_ReleaseObj( bitmap );
return next->funcs->pSelectBitmap( next, bitmap );
}
/***********************************************************************
* dibdrv_SetBkColor
*/
static COLORREF CDECL dibdrv_SetBkColor( PHYSDEV dev, COLORREF color )
{
PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetBkColor );
dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
pdev->bkgnd_color = pdev->dib.funcs->colorref_to_pixel( &pdev->dib, color );
if( GetBkMode(dev->hdc) == OPAQUE )
calc_and_xor_masks( GetROP2(dev->hdc), pdev->bkgnd_color, &pdev->bkgnd_and, &pdev->bkgnd_xor );
else
{
pdev->bkgnd_and = ~0u;
pdev->bkgnd_xor = 0;
}
return next->funcs->pSetBkColor( next, color );
}
/***********************************************************************
* dibdrv_SetBkMode
*/
static INT CDECL dibdrv_SetBkMode( PHYSDEV dev, INT mode )
{
PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetBkMode );
dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
if( mode == OPAQUE )
calc_and_xor_masks( GetROP2(dev->hdc), pdev->bkgnd_color, &pdev->bkgnd_and, &pdev->bkgnd_xor );
else
{
pdev->bkgnd_and = ~0u;
pdev->bkgnd_xor = 0;
}
return next->funcs->pSetBkMode( next, mode );
}
/***********************************************************************
* dibdrv_SetDeviceClipping
*/
static void CDECL dibdrv_SetDeviceClipping( PHYSDEV dev, HRGN vis_rgn, HRGN clip_rgn )
{
PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetDeviceClipping );
dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
TRACE("(%p, %p, %p)\n", dev, vis_rgn, clip_rgn);
CombineRgn( pdev->clip, vis_rgn, clip_rgn, clip_rgn ? RGN_AND : RGN_COPY );
return next->funcs->pSetDeviceClipping( next, vis_rgn, clip_rgn);
}
/***********************************************************************
* dibdrv_SetROP2
*/
static INT CDECL dibdrv_SetROP2( PHYSDEV dev, INT rop )
{
PHYSDEV next = GET_NEXT_PHYSDEV( dev, pSetROP2 );
dibdrv_physdev *pdev = get_dibdrv_pdev(dev);
calc_and_xor_masks(rop, pdev->pen_color, &pdev->pen_and, &pdev->pen_xor);
update_brush_rop(pdev, rop);
if( GetBkMode(dev->hdc) == OPAQUE )
calc_and_xor_masks(rop, pdev->bkgnd_color, &pdev->bkgnd_and, &pdev->bkgnd_xor);
return next->funcs->pSetROP2( next, rop );
}
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const DC_FUNCTIONS dib_driver =
{
NULL, /* pAbortDoc */
NULL, /* pAbortPath */
NULL, /* pAlphaBlend */
NULL, /* pAngleArc */
NULL, /* pArc */
NULL, /* pArcTo */
NULL, /* pBeginPath */
NULL, /* pChoosePixelFormat */
NULL, /* pChord */
NULL, /* pCloseFigure */
NULL, /* pCreateBitmap */
NULL, /* pCreateDC */
NULL, /* pCreateDIBSection */
NULL, /* pDeleteBitmap */
dibdrv_DeleteDC, /* pDeleteDC */
NULL, /* pDeleteObject */
NULL, /* pDescribePixelFormat */
NULL, /* pDeviceCapabilities */
NULL, /* pEllipse */
NULL, /* pEndDoc */
NULL, /* pEndPage */
NULL, /* pEndPath */
NULL, /* pEnumDeviceFonts */
NULL, /* pEnumICMProfiles */
NULL, /* pExcludeClipRect */
NULL, /* pExtDeviceMode */
NULL, /* pExtEscape */
NULL, /* pExtFloodFill */
NULL, /* pExtSelectClipRgn */
NULL, /* pExtTextOut */
NULL, /* pFillPath */
NULL, /* pFillRgn */
NULL, /* pFlattenPath */
NULL, /* pFrameRgn */
NULL, /* pGdiComment */
NULL, /* pGetBitmapBits */
NULL, /* pGetCharWidth */
NULL, /* pGetDIBits */
NULL, /* pGetDeviceCaps */
NULL, /* pGetDeviceGammaRamp */
NULL, /* pGetICMProfile */
NULL, /* pGetNearestColor */
NULL, /* pGetPixel */
NULL, /* pGetPixelFormat */
NULL, /* pGetSystemPaletteEntries */
NULL, /* pGetTextExtentExPoint */
NULL, /* pGetTextMetrics */
NULL, /* pIntersectClipRect */
NULL, /* pInvertRgn */
dibdrv_LineTo, /* pLineTo */
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NULL, /* pModifyWorldTransform */
NULL, /* pMoveTo */
NULL, /* pOffsetClipRgn */
NULL, /* pOffsetViewportOrg */
NULL, /* pOffsetWindowOrg */
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dibdrv_PaintRgn, /* pPaintRgn */
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dibdrv_PatBlt, /* pPatBlt */
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NULL, /* pPie */
NULL, /* pPolyBezier */
NULL, /* pPolyBezierTo */
NULL, /* pPolyDraw */
NULL, /* pPolyPolygon */
NULL, /* pPolyPolyline */
NULL, /* pPolygon */
NULL, /* pPolyline */
NULL, /* pPolylineTo */
NULL, /* pRealizeDefaultPalette */
NULL, /* pRealizePalette */
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dibdrv_Rectangle, /* pRectangle */
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NULL, /* pResetDC */
NULL, /* pRestoreDC */
NULL, /* pRoundRect */
NULL, /* pSaveDC */
NULL, /* pScaleViewportExt */
NULL, /* pScaleWindowExt */
dibdrv_SelectBitmap, /* pSelectBitmap */
dibdrv_SelectBrush, /* pSelectBrush */
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NULL, /* pSelectClipPath */
NULL, /* pSelectFont */
NULL, /* pSelectPalette */
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dibdrv_SelectPen, /* pSelectPen */
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NULL, /* pSetArcDirection */
NULL, /* pSetBitmapBits */
dibdrv_SetBkColor, /* pSetBkColor */
dibdrv_SetBkMode, /* pSetBkMode */
dibdrv_SetDCBrushColor, /* pSetDCBrushColor */
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dibdrv_SetDCPenColor, /* pSetDCPenColor */
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NULL, /* pSetDIBColorTable */
NULL, /* pSetDIBits */
NULL, /* pSetDIBitsToDevice */
dibdrv_SetDeviceClipping, /* pSetDeviceClipping */
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NULL, /* pSetDeviceGammaRamp */
NULL, /* pSetLayout */
NULL, /* pSetMapMode */
NULL, /* pSetMapperFlags */
NULL, /* pSetPixel */
NULL, /* pSetPixelFormat */
NULL, /* pSetPolyFillMode */
dibdrv_SetROP2, /* pSetROP2 */
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NULL, /* pSetRelAbs */
NULL, /* pSetStretchBltMode */
NULL, /* pSetTextAlign */
NULL, /* pSetTextCharacterExtra */
NULL, /* pSetTextColor */
NULL, /* pSetTextJustification */
NULL, /* pSetViewportExt */
NULL, /* pSetViewportOrg */
NULL, /* pSetWindowExt */
NULL, /* pSetWindowOrg */
NULL, /* pSetWorldTransform */
NULL, /* pStartDoc */
NULL, /* pStartPage */
NULL, /* pStretchBlt */
NULL, /* pStretchDIBits */
NULL, /* pStrokeAndFillPath */
NULL, /* pStrokePath */
NULL, /* pSwapBuffers */
NULL, /* pUnrealizePalette */
NULL, /* pWidenPath */
NULL, /* pwglCopyContext */
NULL, /* pwglCreateContext */
NULL, /* pwglCreateContextAttribsARB */
NULL, /* pwglDeleteContext */
NULL, /* pwglGetProcAddress */
NULL, /* pwglGetPbufferDCARB */
NULL, /* pwglMakeCurrent */
NULL, /* pwglMakeContextCurrentARB */
NULL, /* pwglSetPixelFormatWINE */
NULL, /* pwglShareLists */
NULL, /* pwglUseFontBitmapsA */
NULL /* pwglUseFontBitmapsW */
};