614 lines
16 KiB
C
614 lines
16 KiB
C
/*
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* GDI bitmap objects
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*
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* Copyright 1993 Alexandre Julliard
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* 1998 Huw D M Davies
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "wine/winbase16.h"
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#include "gdi.h"
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#include "bitmap.h"
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#include "heap.h"
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#include "debugtools.h"
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#include "wine/winuser16.h"
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DEFAULT_DEBUG_CHANNEL(bitmap);
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BITMAP_DRIVER *BITMAP_Driver = NULL;
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/***********************************************************************
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* BITMAP_GetWidthBytes
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*
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* Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
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* data.
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*/
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INT BITMAP_GetWidthBytes( INT bmWidth, INT bpp )
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{
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switch(bpp)
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{
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case 1:
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return 2 * ((bmWidth+15) >> 4);
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case 24:
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bmWidth *= 3; /* fall through */
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case 8:
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return bmWidth + (bmWidth & 1);
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case 32:
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return bmWidth * 4;
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case 16:
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case 15:
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return bmWidth * 2;
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case 4:
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return 2 * ((bmWidth+3) >> 2);
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default:
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WARN("Unknown depth %d, please report.\n", bpp );
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}
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return -1;
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}
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/***********************************************************************
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* CreateUserBitmap (GDI.407)
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*/
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HBITMAP16 WINAPI CreateUserBitmap16( INT16 width, INT16 height, UINT16 planes,
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UINT16 bpp, LPCVOID bits )
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{
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return CreateBitmap16( width, height, planes, bpp, bits );
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}
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/***********************************************************************
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* CreateUserDiscardableBitmap (GDI.409)
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*/
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HBITMAP16 WINAPI CreateUserDiscardableBitmap16( WORD dummy,
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INT16 width, INT16 height )
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{
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HDC hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
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HBITMAP16 ret = CreateCompatibleBitmap16( hdc, width, height );
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DeleteDC( hdc );
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return ret;
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}
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/***********************************************************************
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* CreateBitmap (GDI.48)
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*/
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HBITMAP16 WINAPI CreateBitmap16( INT16 width, INT16 height, UINT16 planes,
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UINT16 bpp, LPCVOID bits )
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{
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return CreateBitmap( width, height, planes, bpp, bits );
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}
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/******************************************************************************
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* CreateBitmap [GDI32.@] Creates a bitmap with the specified info
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*
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* PARAMS
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* width [I] bitmap width
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* height [I] bitmap height
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* planes [I] Number of color planes
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* bpp [I] Number of bits to identify a color
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* bits [I] Pointer to array containing color data
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*
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* RETURNS
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* Success: Handle to bitmap
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* Failure: 0
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*/
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HBITMAP WINAPI CreateBitmap( INT width, INT height, UINT planes,
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UINT bpp, LPCVOID bits )
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{
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BITMAPOBJ *bmp;
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HBITMAP hbitmap;
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planes = (BYTE)planes;
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bpp = (BYTE)bpp;
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/* Check parameters */
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if (!height || !width) return 0;
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if (planes != 1) {
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FIXME("planes = %d\n", planes);
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return 0;
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}
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if (height < 0) height = -height;
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if (width < 0) width = -width;
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/* Create the BITMAPOBJ */
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if (!(bmp = GDI_AllocObject( sizeof(BITMAPOBJ), BITMAP_MAGIC, &hbitmap ))) return 0;
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TRACE("%dx%d, %d colors returning %08x\n", width, height,
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1 << (planes*bpp), hbitmap);
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bmp->size.cx = 0;
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bmp->size.cy = 0;
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bmp->bitmap.bmType = 0;
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bmp->bitmap.bmWidth = width;
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bmp->bitmap.bmHeight = height;
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bmp->bitmap.bmPlanes = planes;
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bmp->bitmap.bmBitsPixel = bpp;
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bmp->bitmap.bmWidthBytes = BITMAP_GetWidthBytes( width, bpp );
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bmp->bitmap.bmBits = NULL;
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bmp->funcs = NULL;
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bmp->physBitmap = NULL;
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bmp->dib = NULL;
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bmp->segptr_bits = 0;
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if (bits) /* Set bitmap bits */
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SetBitmapBits( hbitmap, height * bmp->bitmap.bmWidthBytes,
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bits );
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GDI_ReleaseObj( hbitmap );
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return hbitmap;
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}
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/***********************************************************************
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* CreateCompatibleBitmap (GDI.51)
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*/
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HBITMAP16 WINAPI CreateCompatibleBitmap16(HDC16 hdc, INT16 width, INT16 height)
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{
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return CreateCompatibleBitmap( hdc, width, height );
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}
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/******************************************************************************
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* CreateCompatibleBitmap [GDI32.@] Creates a bitmap compatible with the DC
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*
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* PARAMS
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* hdc [I] Handle to device context
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* width [I] Width of bitmap
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* height [I] Height of bitmap
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*
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* RETURNS
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* Success: Handle to bitmap
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* Failure: 0
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*/
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HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
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{
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HBITMAP hbmpRet = 0;
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DC *dc;
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TRACE("(%04x,%d,%d) = \n", hdc, width, height );
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if (!(dc = DC_GetDCPtr( hdc ))) return 0;
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if ((width >= 0x10000) || (height >= 0x10000)) {
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FIXME("got bad width %d or height %d, please look for reason\n",
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width, height );
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} else {
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/* MS doc says if width or height is 0, return 1-by-1 pixel, monochrome bitmap */
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if (!width || !height)
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hbmpRet = CreateBitmap( 1, 1, 1, 1, NULL );
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else
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hbmpRet = CreateBitmap( width, height, 1, dc->bitsPerPixel, NULL );
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if(dc->funcs->pCreateBitmap)
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dc->funcs->pCreateBitmap( hbmpRet );
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}
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TRACE("\t\t%04x\n", hbmpRet);
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GDI_ReleaseObj(hdc);
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return hbmpRet;
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}
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/***********************************************************************
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* CreateBitmapIndirect (GDI.49)
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*/
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HBITMAP16 WINAPI CreateBitmapIndirect16( const BITMAP16 * bmp )
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{
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return CreateBitmap16( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
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bmp->bmBitsPixel, MapSL( bmp->bmBits ) );
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}
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/******************************************************************************
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* CreateBitmapIndirect [GDI32.@] Creates a bitmap with the specifies info
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*
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* RETURNS
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* Success: Handle to bitmap
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* Failure: NULL
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*/
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HBITMAP WINAPI CreateBitmapIndirect(
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const BITMAP * bmp) /* [in] Pointer to the bitmap data */
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{
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return CreateBitmap( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
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bmp->bmBitsPixel, bmp->bmBits );
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}
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/***********************************************************************
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* GetBitmapBits (GDI.74)
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*/
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LONG WINAPI GetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPVOID buffer )
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{
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return GetBitmapBits( hbitmap, count, buffer );
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}
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/***********************************************************************
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* GetBitmapBits [GDI32.@] Copies bitmap bits of bitmap to buffer
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*
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* RETURNS
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* Success: Number of bytes copied
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* Failure: 0
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*/
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LONG WINAPI GetBitmapBits(
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HBITMAP hbitmap, /* [in] Handle to bitmap */
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LONG count, /* [in] Number of bytes to copy */
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LPVOID bits) /* [out] Pointer to buffer to receive bits */
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{
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BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
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LONG height, ret;
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if (!bmp) return 0;
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/* If the bits vector is null, the function should return the read size */
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if(bits == NULL)
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{
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ret = bmp->bitmap.bmWidthBytes * bmp->bitmap.bmHeight;
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goto done;
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}
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if (count < 0) {
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WARN("(%ld): Negative number of bytes passed???\n", count );
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count = -count;
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}
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/* Only get entire lines */
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height = count / bmp->bitmap.bmWidthBytes;
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if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
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count = height * bmp->bitmap.bmWidthBytes;
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if (count == 0)
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{
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WARN("Less than one entire line requested\n");
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ret = 0;
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goto done;
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}
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TRACE("(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
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hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
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1 << bmp->bitmap.bmBitsPixel, height );
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if(bmp->funcs) {
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TRACE("Calling device specific BitmapBits\n");
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if(bmp->funcs->pBitmapBits)
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ret = bmp->funcs->pBitmapBits(hbitmap, bits, count, DDB_GET);
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else {
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ERR("BitmapBits == NULL??\n");
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ret = 0;
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}
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} else {
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if(!bmp->bitmap.bmBits) {
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WARN("Bitmap is empty\n");
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ret = 0;
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} else {
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memcpy(bits, bmp->bitmap.bmBits, count);
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ret = count;
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}
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}
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done:
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GDI_ReleaseObj( hbitmap );
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return ret;
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}
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/***********************************************************************
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* SetBitmapBits (GDI.106)
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*/
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LONG WINAPI SetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPCVOID buffer )
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{
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return SetBitmapBits( hbitmap, count, buffer );
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}
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/******************************************************************************
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* SetBitmapBits [GDI32.@] Sets bits of color data for a bitmap
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*
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* RETURNS
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* Success: Number of bytes used in setting the bitmap bits
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* Failure: 0
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*/
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LONG WINAPI SetBitmapBits(
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HBITMAP hbitmap, /* [in] Handle to bitmap */
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LONG count, /* [in] Number of bytes in bitmap array */
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LPCVOID bits) /* [in] Address of array with bitmap bits */
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{
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BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
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LONG height, ret;
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if ((!bmp) || (!bits))
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return 0;
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if (count < 0) {
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WARN("(%ld): Negative number of bytes passed???\n", count );
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count = -count;
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}
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/* Only get entire lines */
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height = count / bmp->bitmap.bmWidthBytes;
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if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
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count = height * bmp->bitmap.bmWidthBytes;
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TRACE("(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
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hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
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1 << bmp->bitmap.bmBitsPixel, height );
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if(bmp->funcs) {
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TRACE("Calling device specific BitmapBits\n");
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if(bmp->funcs->pBitmapBits)
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ret = bmp->funcs->pBitmapBits(hbitmap, (void *) bits, count, DDB_SET);
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else {
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ERR("BitmapBits == NULL??\n");
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ret = 0;
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}
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} else {
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if(!bmp->bitmap.bmBits) /* Alloc enough for entire bitmap */
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bmp->bitmap.bmBits = HeapAlloc( GetProcessHeap(), 0, count );
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if(!bmp->bitmap.bmBits) {
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WARN("Unable to allocate bit buffer\n");
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ret = 0;
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} else {
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memcpy(bmp->bitmap.bmBits, bits, count);
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ret = count;
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}
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}
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GDI_ReleaseObj( hbitmap );
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return ret;
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}
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/**********************************************************************
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* BITMAP_CopyBitmap
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*
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*/
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HBITMAP BITMAP_CopyBitmap(HBITMAP hbitmap)
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{
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BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
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HBITMAP res = 0;
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BITMAP bm;
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if(!bmp) return 0;
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bm = bmp->bitmap;
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bm.bmBits = NULL;
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res = CreateBitmapIndirect(&bm);
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if(res) {
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char *buf = HeapAlloc( GetProcessHeap(), 0, bm.bmWidthBytes *
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bm.bmHeight );
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GetBitmapBits (hbitmap, bm.bmWidthBytes * bm.bmHeight, buf);
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SetBitmapBits (res, bm.bmWidthBytes * bm.bmHeight, buf);
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HeapFree( GetProcessHeap(), 0, buf );
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}
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GDI_ReleaseObj( hbitmap );
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return res;
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}
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/***********************************************************************
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* BITMAP_DeleteObject
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*/
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BOOL BITMAP_DeleteObject( HBITMAP16 hbitmap, BITMAPOBJ * bmp )
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{
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if (bmp->funcs && bmp->funcs->pDeleteObject)
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bmp->funcs->pDeleteObject( hbitmap );
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if( bmp->bitmap.bmBits )
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HeapFree( GetProcessHeap(), 0, bmp->bitmap.bmBits );
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DIB_DeleteDIBSection( bmp );
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return GDI_FreeObject( hbitmap, bmp );
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}
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/***********************************************************************
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* BITMAP_GetObject16
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*/
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INT16 BITMAP_GetObject16( BITMAPOBJ * bmp, INT16 count, LPVOID buffer )
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{
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if (bmp->dib)
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{
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if ( count <= sizeof(BITMAP16) )
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{
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BITMAP *bmp32 = &bmp->dib->dsBm;
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BITMAP16 bmp16;
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bmp16.bmType = bmp32->bmType;
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bmp16.bmWidth = bmp32->bmWidth;
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bmp16.bmHeight = bmp32->bmHeight;
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bmp16.bmWidthBytes = bmp32->bmWidthBytes;
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bmp16.bmPlanes = bmp32->bmPlanes;
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bmp16.bmBitsPixel = bmp32->bmBitsPixel;
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bmp16.bmBits = (SEGPTR)0;
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memcpy( buffer, &bmp16, count );
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return count;
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}
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else
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{
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FIXME("not implemented for DIBs: count %d\n", count);
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return 0;
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}
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}
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else
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{
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BITMAP16 bmp16;
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bmp16.bmType = bmp->bitmap.bmType;
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bmp16.bmWidth = bmp->bitmap.bmWidth;
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bmp16.bmHeight = bmp->bitmap.bmHeight;
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bmp16.bmWidthBytes = bmp->bitmap.bmWidthBytes;
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bmp16.bmPlanes = bmp->bitmap.bmPlanes;
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bmp16.bmBitsPixel = bmp->bitmap.bmBitsPixel;
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bmp16.bmBits = (SEGPTR)0;
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if (count > sizeof(bmp16)) count = sizeof(bmp16);
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memcpy( buffer, &bmp16, count );
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return count;
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}
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}
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/***********************************************************************
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* BITMAP_GetObject
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*/
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INT BITMAP_GetObject( BITMAPOBJ * bmp, INT count, LPVOID buffer )
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{
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if (bmp->dib)
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{
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if (count < sizeof(DIBSECTION))
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{
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if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
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}
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else
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{
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if (count > sizeof(DIBSECTION)) count = sizeof(DIBSECTION);
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}
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memcpy( buffer, bmp->dib, count );
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return count;
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}
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else
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{
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if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
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memcpy( buffer, &bmp->bitmap, count );
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return count;
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}
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}
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/***********************************************************************
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* CreateDiscardableBitmap (GDI.156)
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*/
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HBITMAP16 WINAPI CreateDiscardableBitmap16( HDC16 hdc, INT16 width,
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INT16 height )
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{
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return CreateCompatibleBitmap16( hdc, width, height );
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}
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/******************************************************************************
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* CreateDiscardableBitmap [GDI32.@] Creates a discardable bitmap
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*
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* RETURNS
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* Success: Handle to bitmap
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* Failure: NULL
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*/
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HBITMAP WINAPI CreateDiscardableBitmap(
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HDC hdc, /* [in] Handle to device context */
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INT width, /* [in] Bitmap width */
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INT height) /* [in] Bitmap height */
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{
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return CreateCompatibleBitmap( hdc, width, height );
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}
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/***********************************************************************
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* GetBitmapDimensionEx (GDI.468)
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*
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* NOTES
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* Can this call GetBitmapDimensionEx?
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*/
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BOOL16 WINAPI GetBitmapDimensionEx16( HBITMAP16 hbitmap, LPSIZE16 size )
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{
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BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
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if (!bmp) return FALSE;
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size->cx = bmp->size.cx;
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size->cy = bmp->size.cy;
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GDI_ReleaseObj( hbitmap );
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return TRUE;
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}
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/******************************************************************************
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* GetBitmapDimensionEx [GDI32.@] Retrieves dimensions of a bitmap
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*
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* RETURNS
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* Success: TRUE
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* Failure: FALSE
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*/
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BOOL WINAPI GetBitmapDimensionEx(
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HBITMAP hbitmap, /* [in] Handle to bitmap */
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LPSIZE size) /* [out] Address of struct receiving dimensions */
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{
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BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
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if (!bmp) return FALSE;
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*size = bmp->size;
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GDI_ReleaseObj( hbitmap );
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return TRUE;
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}
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/***********************************************************************
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* GetBitmapDimension (GDI.162)
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*/
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DWORD WINAPI GetBitmapDimension16( HBITMAP16 hbitmap )
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|
{
|
|
SIZE16 size;
|
|
if (!GetBitmapDimensionEx16( hbitmap, &size )) return 0;
|
|
return MAKELONG( size.cx, size.cy );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetBitmapDimensionEx (GDI.478)
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|
*/
|
|
BOOL16 WINAPI SetBitmapDimensionEx16( HBITMAP16 hbitmap, INT16 x, INT16 y,
|
|
LPSIZE16 prevSize )
|
|
{
|
|
BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
|
|
if (!bmp) return FALSE;
|
|
if (prevSize)
|
|
{
|
|
prevSize->cx = bmp->size.cx;
|
|
prevSize->cy = bmp->size.cy;
|
|
}
|
|
bmp->size.cx = x;
|
|
bmp->size.cy = y;
|
|
GDI_ReleaseObj( hbitmap );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
* SetBitmapDimensionEx [GDI32.@] Assignes dimensions to a bitmap
|
|
*
|
|
* RETURNS
|
|
* Success: TRUE
|
|
* Failure: FALSE
|
|
*/
|
|
BOOL WINAPI SetBitmapDimensionEx(
|
|
HBITMAP hbitmap, /* [in] Handle to bitmap */
|
|
INT x, /* [in] Bitmap width */
|
|
INT y, /* [in] Bitmap height */
|
|
LPSIZE prevSize) /* [out] Address of structure for orig dims */
|
|
{
|
|
BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
|
|
if (!bmp) return FALSE;
|
|
if (prevSize) *prevSize = bmp->size;
|
|
bmp->size.cx = x;
|
|
bmp->size.cy = y;
|
|
GDI_ReleaseObj( hbitmap );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetBitmapDimension (GDI.163)
|
|
*/
|
|
DWORD WINAPI SetBitmapDimension16( HBITMAP16 hbitmap, INT16 x, INT16 y )
|
|
{
|
|
SIZE16 size;
|
|
if (!SetBitmapDimensionEx16( hbitmap, x, y, &size )) return 0;
|
|
return MAKELONG( size.cx, size.cy );
|
|
}
|
|
|