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gdi32: Factor out get_bitmap_info. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2021-09-09 14:00:47 +02:00 committed by Alexandre Julliard
parent 6e18d3d2e2
commit 839a951f67
1 changed files with 84 additions and 68 deletions
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152
dlls/gdi32/emfdc.c
View File

@ -107,6 +107,84 @@ static void emfdc_update_bounds( struct emf *emf, RECTL *rect )
}
}
static UINT get_bitmap_info( HDC *hdc, HBITMAP *bitmap, BITMAPINFO *info )
{
HBITMAP blit_bitmap;
HDC blit_dc;
UINT info_size, bpp;
DIBSECTION dib;
if (!(info_size = GetObjectW( *bitmap, sizeof(dib), &dib ))) return 0;
if (info_size == sizeof(dib))
{
blit_dc = *hdc;
blit_bitmap = *bitmap;
}
else
{
unsigned char dib_info_buffer[FIELD_OFFSET(BITMAPINFO, bmiColors[256])];
BITMAPINFO *dib_info = (BITMAPINFO *)dib_info_buffer;
BITMAP bmp = dib.dsBm;
HPALETTE palette;
void *bits;
assert( info_size == sizeof(BITMAP) );
dib_info->bmiHeader.biSize = sizeof(dib_info->bmiHeader);
dib_info->bmiHeader.biWidth = bmp.bmWidth;
dib_info->bmiHeader.biHeight = bmp.bmHeight;
dib_info->bmiHeader.biPlanes = 1;
dib_info->bmiHeader.biBitCount = bmp.bmBitsPixel;
dib_info->bmiHeader.biCompression = BI_RGB;
dib_info->bmiHeader.biSizeImage = 0;
dib_info->bmiHeader.biXPelsPerMeter = 0;
dib_info->bmiHeader.biYPelsPerMeter = 0;
dib_info->bmiHeader.biClrUsed = 0;
dib_info->bmiHeader.biClrImportant = 0;
switch (dib_info->bmiHeader.biBitCount)
{
case 16:
((DWORD *)dib_info->bmiColors)[0] = 0xf800;
((DWORD *)dib_info->bmiColors)[1] = 0x07e0;
((DWORD *)dib_info->bmiColors)[2] = 0x001f;
break;
case 32:
((DWORD *)dib_info->bmiColors)[0] = 0xff0000;
((DWORD *)dib_info->bmiColors)[1] = 0x00ff00;
((DWORD *)dib_info->bmiColors)[2] = 0x0000ff;
break;
default:
if (dib_info->bmiHeader.biBitCount > 8) break;
if (!(palette = GetCurrentObject( *hdc, OBJ_PAL ))) return FALSE;
if (!GetPaletteEntries( palette, 0, 256, (PALETTEENTRY *)dib_info->bmiColors ))
return FALSE;
}
if (!(blit_dc = NtGdiCreateCompatibleDC( *hdc ))) return FALSE;
if (!(blit_bitmap = CreateDIBSection( blit_dc, dib_info, DIB_RGB_COLORS, &bits, NULL, 0 )))
goto err;
if (!SelectObject( blit_dc, blit_bitmap )) goto err;
if (!BitBlt( blit_dc, 0, 0, bmp.bmWidth, bmp.bmHeight, *hdc, 0, 0, SRCCOPY ))
goto err;
}
if (!GetDIBits( blit_dc, blit_bitmap, 0, INT_MAX, NULL, info, DIB_RGB_COLORS ))
goto err;
bpp = info->bmiHeader.biBitCount;
if (bpp <= 8)
return sizeof(BITMAPINFOHEADER) + (1 << bpp) * sizeof(RGBQUAD);
else if (bpp == 16 || bpp == 32)
return sizeof(BITMAPINFOHEADER) + 3 * sizeof(RGBQUAD);
return sizeof(BITMAPINFOHEADER);
err:
if (blit_dc && blit_dc != *hdc) DeleteDC( blit_dc );
if (blit_bitmap && blit_bitmap != *bitmap) DeleteObject( blit_bitmap );
return 0;
}
static UINT emfdc_add_handle( struct emf *emf, HGDIOBJ obj )
{
UINT index;
@ -1178,80 +1256,18 @@ static BOOL emfdrv_stretchblt( struct emf *emf, INT x_dst, INT y_dst, INT width_
DWORD rop, DWORD type )
{
BITMAPINFO src_info = {{ sizeof( src_info.bmiHeader ) }};
UINT bmi_size, emr_size, size, bpp;
UINT bmi_size, emr_size, size;
HBITMAP bitmap, blit_bitmap = NULL;
EMRBITBLT *emr = NULL;
BITMAPINFO *bmi;
DIBSECTION dib;
HDC blit_dc;
int info_size;
BOOL ret = FALSE;
if (!(bitmap = GetCurrentObject( hdc_src, OBJ_BITMAP ))) return FALSE;
if (!(info_size = GetObjectW( bitmap, sizeof(dib), &dib ))) return FALSE;
if (info_size == sizeof(DIBSECTION))
{
blit_dc = hdc_src;
blit_bitmap = bitmap;
}
else
{
unsigned char dib_info_buffer[FIELD_OFFSET(BITMAPINFO, bmiColors[256])];
BITMAPINFO *dib_info = (BITMAPINFO *)dib_info_buffer;
BITMAP bmp = dib.dsBm;
HPALETTE palette;
void *bits;
assert( info_size == sizeof(BITMAP) );
dib_info->bmiHeader.biSize = sizeof(dib_info->bmiHeader);
dib_info->bmiHeader.biWidth = bmp.bmWidth;
dib_info->bmiHeader.biHeight = bmp.bmHeight;
dib_info->bmiHeader.biPlanes = 1;
dib_info->bmiHeader.biBitCount = bmp.bmBitsPixel;
dib_info->bmiHeader.biCompression = BI_RGB;
dib_info->bmiHeader.biSizeImage = 0;
dib_info->bmiHeader.biXPelsPerMeter = 0;
dib_info->bmiHeader.biYPelsPerMeter = 0;
dib_info->bmiHeader.biClrUsed = 0;
dib_info->bmiHeader.biClrImportant = 0;
switch (dib_info->bmiHeader.biBitCount)
{
case 16:
((DWORD *)dib_info->bmiColors)[0] = 0xf800;
((DWORD *)dib_info->bmiColors)[1] = 0x07e0;
((DWORD *)dib_info->bmiColors)[2] = 0x001f;
break;
case 32:
((DWORD *)dib_info->bmiColors)[0] = 0xff0000;
((DWORD *)dib_info->bmiColors)[1] = 0x00ff00;
((DWORD *)dib_info->bmiColors)[2] = 0x0000ff;
break;
default:
if (dib_info->bmiHeader.biBitCount > 8) break;
if (!(palette = GetCurrentObject( hdc_src, OBJ_PAL ))) return FALSE;
if (!GetPaletteEntries( palette, 0, 256, (PALETTEENTRY *)dib_info->bmiColors ))
return FALSE;
}
if (!(blit_dc = NtGdiCreateCompatibleDC( hdc_src ))) return FALSE;
if (!(blit_bitmap = CreateDIBSection( blit_dc, dib_info, DIB_RGB_COLORS, &bits, NULL, 0 )))
goto err;
if (!SelectObject( blit_dc, blit_bitmap )) goto err;
if (!BitBlt( blit_dc, 0, 0, bmp.bmWidth, bmp.bmHeight, hdc_src, 0, 0, SRCCOPY ))
goto err;
}
if (!GetDIBits( blit_dc, blit_bitmap, 0, INT_MAX, NULL, &src_info, DIB_RGB_COLORS ))
goto err;
bpp = src_info.bmiHeader.biBitCount;
if (bpp <= 8)
bmi_size = sizeof(BITMAPINFOHEADER) + (1 << bpp) * sizeof(RGBQUAD);
else if (bpp == 16 || bpp == 32)
bmi_size = sizeof(BITMAPINFOHEADER) + 3 * sizeof(RGBQUAD);
else
bmi_size = sizeof(BITMAPINFOHEADER);
blit_dc = hdc_src;
blit_bitmap = bitmap;
if (!(bmi_size = get_bitmap_info( &blit_dc, &blit_bitmap, &src_info ))) return FALSE;
/* EMRSTRETCHBLT and EMRALPHABLEND have the same structure */
emr_size = type == EMR_BITBLT ? sizeof(EMRBITBLT) : sizeof(EMRSTRETCHBLT);
@ -1298,8 +1314,8 @@ static BOOL emfdrv_stretchblt( struct emf *emf, INT x_dst, INT y_dst, INT width_
err:
HeapFree( GetProcessHeap(), 0, emr );
if (blit_bitmap && blit_bitmap != bitmap) DeleteObject( blit_bitmap );
if (blit_dc && blit_dc != hdc_src) DeleteDC( blit_dc );
if (blit_bitmap != bitmap) DeleteObject( blit_bitmap );
if (blit_dc != hdc_src) DeleteDC( blit_dc );
return ret;
}