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gdi32: Add a helper to build a color table from the DIB_PAL_COLORS bitmap info.

This commit is contained in:
Alexandre Julliard 2011-12-08 21:31:59 +01:00
parent 71199eab77
commit 91d19b4b17
5 changed files with 31 additions and 31 deletions
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42
dlls/gdi32/dib.c
View File

@ -233,6 +233,28 @@ static int fill_color_table_from_palette( BITMAPINFO *info, HDC hdc )
return colors;
}
int fill_color_table_from_pal_colors( HDC hdc, const BITMAPINFO *info, RGBQUAD *color_table )
{
PALETTEENTRY entries[256];
HPALETTE palette;
const WORD *index = (const WORD *)info->bmiColors;
int i, count, colors = get_dib_num_of_colors( info );
if (!colors) return 0;
if (!(palette = GetCurrentObject( hdc, OBJ_PAL ))) return 0;
if (!(count = GetPaletteEntries( palette, 0, colors, entries ))) return 0;
for (i = 0; i < colors; i++, index++)
{
PALETTEENTRY *entry = &entries[*index % count];
color_table[i].rgbRed = entry->peRed;
color_table[i].rgbGreen = entry->peGreen;
color_table[i].rgbBlue = entry->peBlue;
color_table[i].rgbReserved = 0;
}
return colors;
}
static void *get_pixel_ptr( const BITMAPINFO *info, void *bits, int x, int y )
{
const int width = info->bmiHeader.biWidth, height = info->bmiHeader.biHeight;
@ -1383,11 +1405,10 @@ HBITMAP WINAPI CreateDIBitmap( HDC hdc, const BITMAPINFOHEADER *header,
}
/* Copy/synthesize RGB palette from BITMAPINFO */
static void DIB_CopyColorTable( DC *dc, BITMAPOBJ *bmp, WORD coloruse, const BITMAPINFO *info )
static void DIB_CopyColorTable( HDC hdc, BITMAPOBJ *bmp, WORD coloruse, const BITMAPINFO *info )
{
unsigned int colors, i;
unsigned int colors = get_dib_num_of_colors( info );
colors = get_dib_num_of_colors( info );
if (!(bmp->color_table = HeapAlloc(GetProcessHeap(), 0, colors * sizeof(RGBQUAD) ))) return;
bmp->nb_colors = colors;
@ -1397,18 +1418,7 @@ static void DIB_CopyColorTable( DC *dc, BITMAPOBJ *bmp, WORD coloruse, const BIT
}
else
{
PALETTEENTRY entries[256];
const WORD *index = (const WORD *)info->bmiColors;
UINT count = GetPaletteEntries( dc->hPalette, 0, colors, entries );
for (i = 0; i < colors; i++, index++)
{
PALETTEENTRY *entry = &entries[*index % count];
bmp->color_table[i].rgbRed = entry->peRed;
bmp->color_table[i].rgbGreen = entry->peGreen;
bmp->color_table[i].rgbBlue = entry->peBlue;
bmp->color_table[i].rgbReserved = 0;
}
fill_color_table_from_pal_colors( hdc, info, bmp->color_table );
}
}
@ -1521,7 +1531,7 @@ HBITMAP WINAPI CreateDIBSection(HDC hdc, CONST BITMAPINFO *bmi, UINT usage,
bmp->dib = dib;
bmp->funcs = physdev->funcs;
/* create local copy of DIB palette */
if (info->bmiHeader.biBitCount <= 8) DIB_CopyColorTable( dc, bmp, usage, info );
if (info->bmiHeader.biBitCount <= 8) DIB_CopyColorTable( hdc, bmp, usage, info );
GDI_ReleaseObj( ret );
if (!physdev->funcs->pCreateDIBSection( physdev, ret, info, usage ))

14
dlls/gdi32/dibdrv/dc.c
View File

@ -162,7 +162,7 @@ static BOOL init_dib_info(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD
return TRUE;
}
BOOL init_dib_info_from_brush(dib_info *dib, const BITMAPINFO *bi, void *bits, UINT usage, HPALETTE palette)
BOOL init_dib_info_from_brush(dib_info *dib, const BITMAPINFO *bi, void *bits, UINT usage, HDC hdc)
{
DWORD *masks = (bi->bmiHeader.biCompression == BI_BITFIELDS) ? (DWORD *)bi->bmiColors : NULL;
RGBQUAD *color_table = NULL, pal_table[256];
@ -172,17 +172,7 @@ BOOL init_dib_info_from_brush(dib_info *dib, const BITMAPINFO *bi, void *bits, U
{
if(usage == DIB_PAL_COLORS)
{
PALETTEENTRY entries[256];
const WORD *index = (const WORD *)bi->bmiColors;
UINT i, count = GetPaletteEntries( palette, 0, num_colors, entries );
for (i = 0; i < num_colors; i++, index++)
{
PALETTEENTRY *entry = &entries[*index % count];
pal_table[i].rgbRed = entry->peRed;
pal_table[i].rgbGreen = entry->peGreen;
pal_table[i].rgbBlue = entry->peBlue;
pal_table[i].rgbReserved = 0;
}
fill_color_table_from_pal_colors( hdc, bi, pal_table );
color_table = pal_table;
}
else color_table = (RGBQUAD *)bi->bmiColors;

2
dlls/gdi32/dibdrv/dibdrv.h
View File

@ -224,7 +224,7 @@ extern void get_rop_codes(INT rop, struct rop_codes *codes) DECLSPEC_HIDDEN;
extern void calc_and_xor_masks(INT rop, DWORD color, DWORD *and, DWORD *xor) DECLSPEC_HIDDEN;
extern void update_brush_rop( dibdrv_physdev *pdev, INT rop ) DECLSPEC_HIDDEN;
extern void reset_dash_origin(dibdrv_physdev *pdev) DECLSPEC_HIDDEN;
extern BOOL init_dib_info_from_brush(dib_info *dib, const BITMAPINFO *bi, void *bits, UINT usage, HPALETTE pal) DECLSPEC_HIDDEN;
extern BOOL init_dib_info_from_brush(dib_info *dib, const BITMAPINFO *bi, void *bits, UINT usage, HDC hdc) DECLSPEC_HIDDEN;
extern BOOL init_dib_info_from_bitmapinfo(dib_info *dib, const BITMAPINFO *info, void *bits,
enum dib_info_flags flags) DECLSPEC_HIDDEN;
extern BOOL init_dib_info_from_bitmapobj(dib_info *dib, BITMAPOBJ *bmp, enum dib_info_flags flags) DECLSPEC_HIDDEN;

3
dlls/gdi32/dibdrv/objects.c
View File

@ -1338,9 +1338,8 @@ static BOOL pattern_brush(dibdrv_physdev *pdev, dib_info *dib, int num, const RE
if (pdev->brush_pattern_usage == DIB_PAL_COLORS)
{
dib_info pattern;
HPALETTE pal = GetCurrentObject( pdev->dev.hdc, OBJ_PAL );
if (!init_dib_info_from_brush( &pattern, pdev->brush_pattern_info,
pdev->brush_pattern_bits, DIB_PAL_COLORS, pal ))
pdev->brush_pattern_bits, DIB_PAL_COLORS, pdev->dev.hdc ))
return FALSE;
select_pattern_brush( pdev, &pattern );
free_dib_info( &pattern );

1
dlls/gdi32/gdi_private.h
View File

@ -235,6 +235,7 @@ extern void DC_UpdateXforms( DC * dc ) DECLSPEC_HIDDEN;
/* dib.c */
extern int bitmap_info_size( const BITMAPINFO * info, WORD coloruse ) DECLSPEC_HIDDEN;
extern int fill_color_table_from_pal_colors( HDC hdc, const BITMAPINFO *info, RGBQUAD *color_table ) DECLSPEC_HIDDEN;
extern void fill_default_color_table( BITMAPINFO *info ) DECLSPEC_HIDDEN;
extern void get_ddb_bitmapinfo( BITMAPOBJ *bmp, BITMAPINFO *info ) DECLSPEC_HIDDEN;
extern BITMAPINFO *copy_packed_dib( const BITMAPINFO *src_info, UINT usage ) DECLSPEC_HIDDEN;