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Sweden-Number/objects/bitmap.c

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/*
* GDI bitmap objects
*
* Copyright 1993 Alexandre Julliard
* 1998 Huw D M Davies
*/
#include <stdlib.h>
#include <string.h>
#include "wine/winbase16.h"
#include "gdi.h"
#include "dc.h"
#include "bitmap.h"
#include "heap.h"
#include "global.h"
#include "sysmetrics.h"
#include "cursoricon.h"
#include "debug.h"
#include "monitor.h"
#include "wine/winuser16.h"
/***********************************************************************
* BITMAP_GetPadding
*
* Return number of bytes to pad a scanline of 16-bit aligned Windows DDB data.
*/
INT BITMAP_GetPadding( int bmWidth, int bpp )
{
INT pad;
switch (bpp)
{
case 1:
pad = ((bmWidth-1) & 8) ? 0 : 1;
break;
case 8:
pad = (2 - (bmWidth & 1)) & 1;
break;
case 24:
pad = (bmWidth*3) & 1;
break;
case 32:
case 16:
case 15:
pad = 0; /* we have 16bit alignment already */
break;
case 4:
if (!(bmWidth & 3)) pad = 0;
else pad = ((4 - (bmWidth & 3)) + 1) / 2;
break;
default:
WARN(bitmap,"Unknown depth %d, please report.\n", bpp );
return -1;
}
return pad;
}
/***********************************************************************
* BITMAP_GetWidthBytes
*
* Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
* data.
*/
INT BITMAP_GetWidthBytes( INT bmWidth, INT bpp )
{
switch(bpp)
{
case 1:
return 2 * ((bmWidth+15) >> 4);
case 24:
bmWidth *= 3; /* fall through */
case 8:
return bmWidth + (bmWidth & 1);
case 32:
return bmWidth * 4;
case 16:
case 15:
return bmWidth * 2;
case 4:
return 2 * ((bmWidth+3) >> 2);
default:
WARN(bitmap,"Unknown depth %d, please report.\n", bpp );
}
return -1;
}
/***********************************************************************
* CreateUserBitmap16 (GDI.407)
*/
HBITMAP16 WINAPI CreateUserBitmap16( INT16 width, INT16 height, UINT16 planes,
UINT16 bpp, LPCVOID bits )
{
return CreateBitmap16( width, height, planes, bpp, bits );
}
/***********************************************************************
* CreateUserDiscardableBitmap16 (GDI.409)
*/
HBITMAP16 WINAPI CreateUserDiscardableBitmap16( WORD dummy,
INT16 width, INT16 height )
{
return CreateUserBitmap16( width, height, 1, MONITOR_GetDepth(&MONITOR_PrimaryMonitor), NULL );
}
/***********************************************************************
* CreateBitmap16 (GDI.48)
*/
HBITMAP16 WINAPI CreateBitmap16( INT16 width, INT16 height, UINT16 planes,
UINT16 bpp, LPCVOID bits )
{
return CreateBitmap( width, height, planes, bpp, bits );
}
/******************************************************************************
* CreateBitmap32 [GDI32.25] Creates a bitmap with the specified info
*
* PARAMS
* width [I] bitmap width
* height [I] bitmap height
* planes [I] Number of color planes
* bpp [I] Number of bits to identify a color
* bits [I] Pointer to array containing color data
*
* RETURNS
* Success: Handle to bitmap
* Failure: 0
*/
HBITMAP WINAPI CreateBitmap( INT width, INT height, UINT planes,
UINT bpp, LPCVOID bits )
{
BITMAPOBJ *bmp;
HBITMAP hbitmap;
planes = (BYTE)planes;
bpp = (BYTE)bpp;
/* Check parameters */
if (!height || !width) return 0;
if (planes != 1) {
FIXME(bitmap, "planes = %d\n", planes);
return 0;
}
if (height < 0) height = -height;
if (width < 0) width = -width;
/* Create the BITMAPOBJ */
hbitmap = GDI_AllocObject( sizeof(BITMAPOBJ), BITMAP_MAGIC );
if (!hbitmap) return 0;
TRACE(bitmap, "%dx%d, %d colors returning %08x\n", width, height,
1 << (planes*bpp), hbitmap);
bmp = (BITMAPOBJ *) GDI_HEAP_LOCK( hbitmap );
bmp->size.cx = 0;
bmp->size.cy = 0;
bmp->bitmap.bmType = 0;
bmp->bitmap.bmWidth = width;
bmp->bitmap.bmHeight = height;
bmp->bitmap.bmPlanes = planes;
bmp->bitmap.bmBitsPixel = bpp;
bmp->bitmap.bmWidthBytes = BITMAP_GetWidthBytes( width, bpp );
bmp->bitmap.bmBits = NULL;
bmp->DDBitmap = NULL;
bmp->dib = NULL;
if (bits) /* Set bitmap bits */
SetBitmapBits( hbitmap, height * bmp->bitmap.bmWidthBytes,
bits );
GDI_HEAP_UNLOCK( hbitmap );
return hbitmap;
}
/***********************************************************************
* CreateCompatibleBitmap16 (GDI.51)
*/
HBITMAP16 WINAPI CreateCompatibleBitmap16(HDC16 hdc, INT16 width, INT16 height)
{
return CreateCompatibleBitmap( hdc, width, height );
}
/******************************************************************************
* CreateCompatibleBitmap32 [GDI32.30] Creates a bitmap compatible with the DC
*
* PARAMS
* hdc [I] Handle to device context
* width [I] Width of bitmap
* height [I] Height of bitmap
*
* RETURNS
* Success: Handle to bitmap
* Failure: 0
*/
HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
{
HBITMAP hbmpRet = 0;
DC *dc;
TRACE(bitmap, "(%04x,%d,%d) = \n", hdc, width, height );
if (!(dc = DC_GetDCPtr( hdc ))) return 0;
if ((width >= 0x10000) || (height >= 0x10000)) {
FIXME(bitmap,"got bad width %d or height %d, please look for reason\n",
width, height );
} else {
hbmpRet = CreateBitmap( width, height, 1, dc->w.bitsPerPixel, NULL );
if(dc->funcs->pCreateBitmap)
dc->funcs->pCreateBitmap( hbmpRet );
}
TRACE(bitmap,"\t\t%04x\n", hbmpRet);
GDI_HEAP_UNLOCK(hdc);
return hbmpRet;
}
/***********************************************************************
* CreateBitmapIndirect16 (GDI.49)
*/
HBITMAP16 WINAPI CreateBitmapIndirect16( const BITMAP16 * bmp )
{
return CreateBitmap16( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
bmp->bmBitsPixel, PTR_SEG_TO_LIN( bmp->bmBits ) );
}
/******************************************************************************
* CreateBitmapIndirect32 [GDI32.26] Creates a bitmap with the specifies info
*
* RETURNS
* Success: Handle to bitmap
* Failure: NULL
*/
HBITMAP WINAPI CreateBitmapIndirect(
const BITMAP * bmp) /* [in] Pointer to the bitmap data */
{
return CreateBitmap( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
bmp->bmBitsPixel, bmp->bmBits );
}
/***********************************************************************
* GetBitmapBits16 (GDI.74)
*/
LONG WINAPI GetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPVOID buffer )
{
return GetBitmapBits( hbitmap, count, buffer );
}
/***********************************************************************
* GetBitmapBits32 [GDI32.143] Copies bitmap bits of bitmap to buffer
*
* RETURNS
* Success: Number of bytes copied
* Failure: 0
*/
LONG WINAPI GetBitmapBits(
HBITMAP hbitmap, /* [in] Handle to bitmap */
LONG count, /* [in] Number of bytes to copy */
LPVOID bits) /* [out] Pointer to buffer to receive bits */
{
BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
LONG height, ret;
if (!bmp) return 0;
if (count < 0) {
WARN(bitmap, "(%ld): Negative number of bytes passed???\n", count );
count = -count;
}
/* Only get entire lines */
height = count / bmp->bitmap.bmWidthBytes;
if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
count = height * bmp->bitmap.bmWidthBytes;
if (count == 0)
{
WARN(bitmap, "Less then one entire line requested\n");
GDI_HEAP_UNLOCK( hbitmap );
return 0;
}
TRACE(bitmap, "(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
1 << bmp->bitmap.bmBitsPixel, height );
if(bmp->DDBitmap) {
TRACE(bitmap, "Calling device specific BitmapBits\n");
if(bmp->DDBitmap->funcs->pBitmapBits)
ret = bmp->DDBitmap->funcs->pBitmapBits(hbitmap, bits, count,
DDB_GET);
else {
ERR(bitmap, "BitmapBits == NULL??\n");
ret = 0;
}
} else {
if(!bmp->bitmap.bmBits) {
WARN(bitmap, "Bitmap is empty\n");
ret = 0;
} else {
memcpy(bits, bmp->bitmap.bmBits, count);
ret = count;
}
}
GDI_HEAP_UNLOCK( hbitmap );
return ret;
}
/***********************************************************************
* SetBitmapBits16 (GDI.106)
*/
LONG WINAPI SetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPCVOID buffer )
{
return SetBitmapBits( hbitmap, count, buffer );
}
/******************************************************************************
* SetBitmapBits32 [GDI32.303] Sets bits of color data for a bitmap
*
* RETURNS
* Success: Number of bytes used in setting the bitmap bits
* Failure: 0
*/
LONG WINAPI SetBitmapBits(
HBITMAP hbitmap, /* [in] Handle to bitmap */
LONG count, /* [in] Number of bytes in bitmap array */
LPCVOID bits) /* [in] Address of array with bitmap bits */
{
BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
LONG height, ret;
if (!bmp) return 0;
if (count < 0) {
WARN(bitmap, "(%ld): Negative number of bytes passed???\n", count );
count = -count;
}
/* Only get entire lines */
height = count / bmp->bitmap.bmWidthBytes;
if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
count = height * bmp->bitmap.bmWidthBytes;
TRACE(bitmap, "(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
1 << bmp->bitmap.bmBitsPixel, height );
if(bmp->DDBitmap) {
TRACE(bitmap, "Calling device specific BitmapBits\n");
if(bmp->DDBitmap->funcs->pBitmapBits)
ret = bmp->DDBitmap->funcs->pBitmapBits(hbitmap, (void *) bits,
count, DDB_SET);
else {
ERR(bitmap, "BitmapBits == NULL??\n");
ret = 0;
}
} else {
if(!bmp->bitmap.bmBits) /* Alloc enough for entire bitmap */
bmp->bitmap.bmBits = HeapAlloc( GetProcessHeap(), 0, count );
if(!bmp->bitmap.bmBits) {
WARN(bitmap, "Unable to allocate bit buffer\n");
ret = 0;
} else {
memcpy(bmp->bitmap.bmBits, bits, count);
ret = count;
}
}
GDI_HEAP_UNLOCK( hbitmap );
return ret;
}
/***********************************************************************
* LoadImage16 [USER.389]
*
*/
HANDLE16 WINAPI LoadImage16( HINSTANCE16 hinst, LPCSTR name, UINT16 type,
INT16 desiredx, INT16 desiredy, UINT16 loadflags)
{
if (HIWORD(name)) {
TRACE(resource,"(0x%04x,%s,%d,%d,%d,0x%08x)\n",
hinst,(char *)PTR_SEG_TO_LIN(name),type,desiredx,desiredy,loadflags);
} else {
TRACE(resource,"LoadImage16(0x%04x,%p,%d,%d,%d,0x%08x)\n",
hinst,name,type,desiredx,desiredy,loadflags);
}
switch (type) {
case IMAGE_BITMAP:
return LoadBitmap16(hinst,(SEGPTR)name);
case IMAGE_ICON:
return LoadIcon16(hinst,(SEGPTR)name);
case IMAGE_CURSOR:
return LoadCursor16(hinst,(SEGPTR)name);
}
return 0;
}
/**********************************************************************
* LoadImage32A (USER32.365)
*
* FIXME: implementation lacks some features, see LR_ defines in windows.h
*/
HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
INT desiredx, INT desiredy, UINT loadflags)
{
HANDLE res;
LPWSTR u_name;
if (HIWORD(name)) u_name = HEAP_strdupAtoW(GetProcessHeap(), 0, name);
else u_name=(LPWSTR)name;
res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
if (HIWORD(name)) HeapFree(GetProcessHeap(), 0, u_name);
return res;
}
/******************************************************************************
* LoadImage32W [USER32.366] Loads an icon, cursor, or bitmap
*
* PARAMS
* hinst [I] Handle of instance that contains image
* name [I] Name of image
* type [I] Type of image
* desiredx [I] Desired width
* desiredy [I] Desired height
* loadflags [I] Load flags
*
* RETURNS
* Success: Handle to newly loaded image
* Failure: NULL
*
* FIXME: Implementation lacks some features, see LR_ defines in windows.h
*/
HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
INT desiredx, INT desiredy, UINT loadflags )
{
if (HIWORD(name)) {
TRACE(resource,"(0x%04x,%p,%d,%d,%d,0x%08x)\n",
hinst,name,type,desiredx,desiredy,loadflags);
} else {
TRACE(resource,"(0x%04x,%p,%d,%d,%d,0x%08x)\n",
hinst,name,type,desiredx,desiredy,loadflags);
}
if (loadflags & LR_DEFAULTSIZE) {
if (type == IMAGE_ICON) {
if (!desiredx) desiredx = SYSMETRICS_CXICON;
if (!desiredy) desiredy = SYSMETRICS_CYICON;
} else if (type == IMAGE_CURSOR) {
if (!desiredx) desiredx = SYSMETRICS_CXCURSOR;
if (!desiredy) desiredy = SYSMETRICS_CYCURSOR;
}
}
if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
switch (type) {
case IMAGE_BITMAP:
return BITMAP_LoadBitmapW(hinst, name, loadflags);
case IMAGE_ICON:
{
HDC hdc = GetDC(0);
UINT palEnts = GetSystemPaletteEntries(hdc, 0, 0, NULL);
ReleaseDC(0, hdc);
return CURSORICON_Load(hinst, name, desiredx, desiredy,
MIN(16, palEnts), FALSE, loadflags);
}
case IMAGE_CURSOR:
return CURSORICON_Load(hinst, name, desiredx, desiredy,
1, TRUE, loadflags);
}
return 0;
}
/**********************************************************************
* BITMAP_CopyBitmap
*
*/
HBITMAP BITMAP_CopyBitmap(HBITMAP hbitmap)
{
BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
HBITMAP res = 0;
BITMAP bm;
if(!bmp) return 0;
bm = bmp->bitmap;
bm.bmBits = NULL;
res = CreateBitmapIndirect(&bm);
if(res) {
char *buf = HeapAlloc( GetProcessHeap(), 0, bm.bmWidthBytes *
bm.bmHeight );
GetBitmapBits (hbitmap, bm.bmWidthBytes * bm.bmHeight, buf);
SetBitmapBits (res, bm.bmWidthBytes * bm.bmHeight, buf);
HeapFree( GetProcessHeap(), 0, buf );
}
GDI_HEAP_UNLOCK( hbitmap );
return res;
}
/******************************************************************************
* CopyImage16 [USER.390] Creates new image and copies attributes to it
*
*/
HICON16 WINAPI CopyImage16( HANDLE16 hnd, UINT16 type, INT16 desiredx,
INT16 desiredy, UINT16 flags )
{
return (HICON16)CopyImage((HANDLE)hnd, (UINT)type, (INT)desiredx,
(INT)desiredy, (UINT)flags);
}
/******************************************************************************
* CopyImage32 [USER32.61] Creates new image and copies attributes to it
*
* PARAMS
* hnd [I] Handle to image to copy
* type [I] Type of image to copy
* desiredx [I] Desired width of new image
* desiredy [I] Desired height of new image
* flags [I] Copy flags
*
* RETURNS
* Success: Handle to newly created image
* Failure: NULL
*
* FIXME: implementation still lacks nearly all features, see LR_*
* defines in windows.h
*/
HICON WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
INT desiredy, UINT flags )
{
switch (type)
{
case IMAGE_BITMAP:
return BITMAP_CopyBitmap(hnd);
case IMAGE_ICON:
return CopyIcon(hnd);
case IMAGE_CURSOR:
return CopyCursor(hnd);
}
return 0;
}
/**********************************************************************
* LoadBitmap16 (USER.175)
*
* NOTES
* Can this call LoadBitmap32?
*/
HBITMAP16 WINAPI LoadBitmap16( HINSTANCE16 instance, SEGPTR name )
{
HBITMAP hbitmap = 0;
HDC hdc;
HRSRC16 hRsrc;
HGLOBAL16 handle;
BITMAPINFO *info;
if (HIWORD(name))
{
char *str = (char *)PTR_SEG_TO_LIN( name );
TRACE(bitmap, "(%04x,'%s')\n", instance, str );
if (str[0] == '#') name = (SEGPTR)(DWORD)(WORD)atoi( str + 1 );
}
else
TRACE(bitmap, "(%04x,%04x)\n",
instance, LOWORD(name) );
if (!instance) /* OEM bitmap */
{
HDC hdc;
DC *dc;
if (HIWORD((int)name)) return 0;
hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
dc = DC_GetDCPtr( hdc );
if(dc->funcs->pLoadOEMResource)
hbitmap = dc->funcs->pLoadOEMResource( LOWORD((int)name),
OEM_BITMAP );
GDI_HEAP_UNLOCK( hdc );
DeleteDC( hdc );
return hbitmap;
}
if (!(hRsrc = FindResource16( instance, name, RT_BITMAP16 ))) return 0;
if (!(handle = LoadResource16( instance, hRsrc ))) return 0;
info = (BITMAPINFO *)LockResource16( handle );
if ((hdc = GetDC(0)) != 0)
{
char *bits = (char *)info + DIB_BitmapInfoSize( info, DIB_RGB_COLORS );
hbitmap = CreateDIBitmap( hdc, &info->bmiHeader, CBM_INIT,
bits, info, DIB_RGB_COLORS );
ReleaseDC( 0, hdc );
}
FreeResource16( handle );
return hbitmap;
}
/**********************************************************************
* BITMAP_LoadBitmap32W
*/
HBITMAP BITMAP_LoadBitmapW(HINSTANCE instance,LPCWSTR name,
UINT loadflags)
{
HBITMAP hbitmap = 0;
HDC hdc;
HRSRC hRsrc;
HGLOBAL handle;
char *ptr = NULL;
BITMAPINFO *info, *fix_info=NULL;
HGLOBAL hFix;
int size;
if (!(loadflags & LR_LOADFROMFILE)) {
if (!instance) /* OEM bitmap */
{
HDC hdc;
DC *dc;
if (HIWORD((int)name)) return 0;
hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
dc = DC_GetDCPtr( hdc );
if(dc->funcs->pLoadOEMResource)
hbitmap = dc->funcs->pLoadOEMResource( LOWORD((int)name),
OEM_BITMAP );
GDI_HEAP_UNLOCK( hdc );
DeleteDC( hdc );
return hbitmap;
}
if (!(hRsrc = FindResourceW( instance, name, RT_BITMAPW ))) return 0;
if (!(handle = LoadResource( instance, hRsrc ))) return 0;
if ((info = (BITMAPINFO *)LockResource( handle )) == NULL) return 0;
}
else
{
if (!(ptr = (char *)VIRTUAL_MapFileW( name ))) return 0;
info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
}
size = DIB_BitmapInfoSize(info, DIB_RGB_COLORS);
if ((hFix = GlobalAlloc(0, size))) fix_info=GlobalLock(hFix);
if (fix_info) {
BYTE pix;
memcpy(fix_info, info, size);
pix = *((LPBYTE)info+DIB_BitmapInfoSize(info, DIB_RGB_COLORS));
DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
if ((hdc = GetDC(0)) != 0) {
if (loadflags & LR_CREATEDIBSECTION)
hbitmap = CreateDIBSection(hdc, fix_info, DIB_RGB_COLORS, NULL, 0, 0);
else {
char *bits = (char *)info + size;;
hbitmap = CreateDIBitmap( hdc, &fix_info->bmiHeader, CBM_INIT,
bits, fix_info, DIB_RGB_COLORS );
}
ReleaseDC( 0, hdc );
}
GlobalUnlock(hFix);
GlobalFree(hFix);
}
if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
return hbitmap;
}
/******************************************************************************
* LoadBitmap32W [USER32.358] Loads bitmap from the executable file
*
* RETURNS
* Success: Handle to specified bitmap
* Failure: NULL
*/
HBITMAP WINAPI LoadBitmapW(
HINSTANCE instance, /* [in] Handle to application instance */
LPCWSTR name) /* [in] Address of bitmap resource name */
{
return BITMAP_LoadBitmapW(instance, name, 0);
}
/**********************************************************************
* LoadBitmap32A (USER32.357)
*/
HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
{
HBITMAP res;
if (!HIWORD(name)) res = LoadBitmapW( instance, (LPWSTR)name );
else
{
LPWSTR uni = HEAP_strdupAtoW( GetProcessHeap(), 0, name );
res = LoadBitmapW( instance, uni );
HeapFree( GetProcessHeap(), 0, uni );
}
return res;
}
/***********************************************************************
* BITMAP_DeleteObject
*/
BOOL BITMAP_DeleteObject( HBITMAP16 hbitmap, BITMAPOBJ * bmp )
{
if( bmp->DDBitmap ) {
if( bmp->DDBitmap->funcs->pDeleteObject )
bmp->DDBitmap->funcs->pDeleteObject( hbitmap );
}
if( bmp->bitmap.bmBits )
HeapFree( GetProcessHeap(), 0, bmp->bitmap.bmBits );
DIB_DeleteDIBSection( bmp );
return GDI_FreeObject( hbitmap );
}
/***********************************************************************
* BITMAP_GetObject16
*/
INT16 BITMAP_GetObject16( BITMAPOBJ * bmp, INT16 count, LPVOID buffer )
{
if (bmp->dib)
{
if ( count <= sizeof(BITMAP16) )
{
BITMAP *bmp32 = &bmp->dib->dibSection.dsBm;
BITMAP16 bmp16;
bmp16.bmType = bmp32->bmType;
bmp16.bmWidth = bmp32->bmWidth;
bmp16.bmHeight = bmp32->bmHeight;
bmp16.bmWidthBytes = bmp32->bmWidthBytes;
bmp16.bmPlanes = bmp32->bmPlanes;
bmp16.bmBitsPixel = bmp32->bmBitsPixel;
bmp16.bmBits = (SEGPTR)0;
memcpy( buffer, &bmp16, count );
return count;
}
else
{
FIXME(bitmap, "not implemented for DIBs: count %d\n", count);
return 0;
}
}
else
{
BITMAP16 bmp16;
bmp16.bmType = bmp->bitmap.bmType;
bmp16.bmWidth = bmp->bitmap.bmWidth;
bmp16.bmHeight = bmp->bitmap.bmHeight;
bmp16.bmWidthBytes = bmp->bitmap.bmWidthBytes;
bmp16.bmPlanes = bmp->bitmap.bmPlanes;
bmp16.bmBitsPixel = bmp->bitmap.bmBitsPixel;
bmp16.bmBits = (SEGPTR)0;
if (count > sizeof(bmp16)) count = sizeof(bmp16);
memcpy( buffer, &bmp16, count );
return count;
}
}
/***********************************************************************
* BITMAP_GetObject32
*/
INT BITMAP_GetObject( BITMAPOBJ * bmp, INT count, LPVOID buffer )
{
if (bmp->dib)
{
if (count < sizeof(DIBSECTION))
{
if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
}
else
{
if (count > sizeof(DIBSECTION)) count = sizeof(DIBSECTION);
}
memcpy( buffer, &bmp->dib->dibSection, count );
return count;
}
else
{
if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
memcpy( buffer, &bmp->bitmap, count );
return count;
}
}
/***********************************************************************
* CreateDiscardableBitmap16 (GDI.156)
*/
HBITMAP16 WINAPI CreateDiscardableBitmap16( HDC16 hdc, INT16 width,
INT16 height )
{
return CreateCompatibleBitmap16( hdc, width, height );
}
/******************************************************************************
* CreateDiscardableBitmap32 [GDI32.38] Creates a discardable bitmap
*
* RETURNS
* Success: Handle to bitmap
* Failure: NULL
*/
HBITMAP WINAPI CreateDiscardableBitmap(
HDC hdc, /* [in] Handle to device context */
INT width, /* [in] Bitmap width */
INT height) /* [in] Bitmap height */
{
return CreateCompatibleBitmap( hdc, width, height );
}
/***********************************************************************
* GetBitmapDimensionEx16 (GDI.468)
*
* NOTES
* Can this call GetBitmapDimensionEx32?
*/
BOOL16 WINAPI GetBitmapDimensionEx16( HBITMAP16 hbitmap, LPSIZE16 size )
{
BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
if (!bmp) return FALSE;
CONV_SIZE32TO16( &bmp->size, size );
GDI_HEAP_UNLOCK( hbitmap );
return TRUE;
}
/******************************************************************************
* GetBitmapDimensionEx32 [GDI32.144] Retrieves dimensions of a bitmap
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI GetBitmapDimensionEx(
HBITMAP hbitmap, /* [in] Handle to bitmap */
LPSIZE size) /* [out] Address of struct receiving dimensions */
{
BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
if (!bmp) return FALSE;
*size = bmp->size;
GDI_HEAP_UNLOCK( hbitmap );
return TRUE;
}
/***********************************************************************
* GetBitmapDimension (GDI.162)
*/
DWORD WINAPI GetBitmapDimension16( HBITMAP16 hbitmap )
{
SIZE16 size;
if (!GetBitmapDimensionEx16( hbitmap, &size )) return 0;
return MAKELONG( size.cx, size.cy );
}
/***********************************************************************
* SetBitmapDimensionEx16 (GDI.478)
*/
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) CONV_SIZE32TO16( &bmp->size, prevSize );
bmp->size.cx = x;
bmp->size.cy = y;
GDI_HEAP_UNLOCK( hbitmap );
return TRUE;
}
/******************************************************************************
* SetBitmapDimensionEx32 [GDI32.304] 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_HEAP_UNLOCK( 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 );
}
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