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goma/wine/4e1c8767f914ba30a91c44ca00b2e4a67f8c89f0/./dlls/user32/cursoricon.c
blob: a003cb06e930c8cfedbd8ec570c4387f61fb3404 [file]
/*
* Cursor and icon support
*
* Copyright 1995 Alexandre Julliard
* 1996 Martin Von Loewis
* 1997 Alex Korobka
* 1998 Turchanov Sergey
* 2007 Henri Verbeet
*
* 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
*/
/*
* Theory:
*
* Cursors and icons are stored in a global heap block, with the
* following layout:
*
* CURSORICONINFO info;
* BYTE[] ANDbits;
* BYTE[] XORbits;
*
* The bits structures are in the format of a device-dependent bitmap.
*
* This layout is very sub-optimal, as the bitmap bits are stored in
* the X client instead of in the server like other bitmaps; however,
* some programs (notably Paint Brush) expect to be able to manipulate
* the bits directly :-(
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winerror.h"
#include "wine/winbase16.h"
#include "wine/winuser16.h"
#include "wine/exception.h"
#include "wine/debug.h"
#include "controls.h"
#include "user_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(cursor);
WINE_DECLARE_DEBUG_CHANNEL(icon);
WINE_DECLARE_DEBUG_CHANNEL(resource);
#include "pshpack1.h"
typedef struct {
BYTE bWidth;
BYTE bHeight;
BYTE bColorCount;
BYTE bReserved;
WORD xHotspot;
WORD yHotspot;
DWORD dwDIBSize;
DWORD dwDIBOffset;
} CURSORICONFILEDIRENTRY;
typedef struct
{
WORD idReserved;
WORD idType;
WORD idCount;
CURSORICONFILEDIRENTRY idEntries[1];
} CURSORICONFILEDIR;
#include "poppack.h"
static RECT CURSOR_ClipRect; /* Cursor clipping rect */
static HDC screen_dc;
static const WCHAR DISPLAYW[] = {'D','I','S','P','L','A','Y',0};
/**********************************************************************
* ICONCACHE for cursors/icons loaded with LR_SHARED.
*
* FIXME: This should not be allocated on the system heap, but on a
* subsystem-global heap (i.e. one for all Win16 processes,
* and one for each Win32 process).
*/
typedef struct tagICONCACHE
{
struct tagICONCACHE *next;
HMODULE hModule;
HRSRC hRsrc;
HRSRC hGroupRsrc;
HICON hIcon;
INT count;
} ICONCACHE;
static ICONCACHE *IconAnchor = NULL;
static CRITICAL_SECTION IconCrst;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &IconCrst,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": IconCrst") }
};
static CRITICAL_SECTION IconCrst = { &critsect_debug, -1, 0, 0, 0, 0 };
static const WORD ICON_HOTSPOT = 0x4242;
/**********************************************************************
* User objects management
*/
struct cursoricon_object
{
struct user_object obj; /* object header */
ULONG_PTR param; /* opaque param used by 16-bit code */
/* followed by cursor data in CURSORICONINFO format */
};
static HICON alloc_icon_handle( unsigned int size )
{
struct cursoricon_object *obj = HeapAlloc( GetProcessHeap(), 0, sizeof(*obj) + size );
if (!obj) return 0;
obj->param = 0;
return alloc_user_handle( &obj->obj, USER_ICON );
}
static struct tagCURSORICONINFO *get_icon_ptr( HICON handle )
{
struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
if (obj == OBJ_OTHER_PROCESS)
{
WARN( "icon handle %p from other process\n", handle );
obj = NULL;
}
return obj ? (struct tagCURSORICONINFO *)(obj + 1) : NULL;
}
static void release_icon_ptr( HICON handle, struct tagCURSORICONINFO *ptr )
{
release_user_handle_ptr( (struct cursoricon_object *)ptr - 1 );
}
static BOOL free_icon_handle( HICON handle )
{
struct cursoricon_object *obj = free_user_handle( handle, USER_ICON );
if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
else if (obj)
{
ULONG_PTR param = obj->param;
HeapFree( GetProcessHeap(), 0, obj );
if (wow_handlers.free_icon_param && param) wow_handlers.free_icon_param( param );
return TRUE;
}
return FALSE;
}
ULONG_PTR get_icon_param( HICON handle )
{
ULONG_PTR ret = 0;
struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
else if (obj)
{
ret = obj->param;
release_user_handle_ptr( obj );
}
return ret;
}
ULONG_PTR set_icon_param( HICON handle, ULONG_PTR param )
{
ULONG_PTR ret = 0;
struct cursoricon_object *obj = get_user_handle_ptr( handle, USER_ICON );
if (obj == OBJ_OTHER_PROCESS) WARN( "icon handle %p from other process\n", handle );
else if (obj)
{
ret = obj->param;
obj->param = param;
release_user_handle_ptr( obj );
}
return ret;
}
/***********************************************************************
* map_fileW
*
* Helper function to map a file to memory:
* name - file name
* [RETURN] ptr - pointer to mapped file
* [RETURN] filesize - pointer size of file to be stored if not NULL
*/
static void *map_fileW( LPCWSTR name, LPDWORD filesize )
{
HANDLE hFile, hMapping;
LPVOID ptr = NULL;
hFile = CreateFileW( name, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, 0 );
if (hFile != INVALID_HANDLE_VALUE)
{
hMapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
if (hMapping)
{
ptr = MapViewOfFile( hMapping, FILE_MAP_READ, 0, 0, 0 );
CloseHandle( hMapping );
if (filesize)
*filesize = GetFileSize( hFile, NULL );
}
CloseHandle( hFile );
}
return ptr;
}
/***********************************************************************
* get_bitmap_width_bytes
*
* Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
* data.
*/
static int get_bitmap_width_bytes( int width, int bpp )
{
switch(bpp)
{
case 1:
return 2 * ((width+15) / 16);
case 4:
return 2 * ((width+3) / 4);
case 24:
width *= 3;
/* fall through */
case 8:
return width + (width & 1);
case 16:
case 15:
return width * 2;
case 32:
return width * 4;
default:
WARN("Unknown depth %d, please report.\n", bpp );
}
return -1;
}
/***********************************************************************
* get_dib_width_bytes
*
* Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
*/
static int get_dib_width_bytes( int width, int depth )
{
int words;
switch(depth)
{
case 1: words = (width + 31) / 32; break;
case 4: words = (width + 7) / 8; break;
case 8: words = (width + 3) / 4; break;
case 15:
case 16: words = (width + 1) / 2; break;
case 24: words = (width * 3 + 3)/4; break;
default:
WARN("(%d): Unsupported depth\n", depth );
/* fall through */
case 32:
words = width;
}
return 4 * words;
}
/***********************************************************************
* bitmap_info_size
*
* Return the size of the bitmap info structure including color table.
*/
static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
{
int colors, masks = 0;
if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
return sizeof(BITMAPCOREHEADER) + colors *
((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
}
else /* assume BITMAPINFOHEADER */
{
colors = info->bmiHeader.biClrUsed;
if (colors > 256) /* buffer overflow otherwise */
colors = 256;
if (!colors && (info->bmiHeader.biBitCount <= 8))
colors = 1 << info->bmiHeader.biBitCount;
if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
return sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) + colors *
((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
}
}
/***********************************************************************
* is_dib_monochrome
*
* Returns whether a DIB can be converted to a monochrome DDB.
*
* A DIB can be converted if its color table contains only black and
* white. Black must be the first color in the color table.
*
* Note : If the first color in the color table is white followed by
* black, we can't convert it to a monochrome DDB with
* SetDIBits, because black and white would be inverted.
*/
static BOOL is_dib_monochrome( const BITMAPINFO* info )
{
if (info->bmiHeader.biBitCount != 1) return FALSE;
if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
const RGBTRIPLE *rgb = ((const BITMAPCOREINFO*)info)->bmciColors;
/* Check if the first color is black */
if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
{
rgb++;
/* Check if the second color is white */
return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
&& (rgb->rgbtBlue == 0xff));
}
else return FALSE;
}
else /* assume BITMAPINFOHEADER */
{
const RGBQUAD *rgb = info->bmiColors;
/* Check if the first color is black */
if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
(rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
{
rgb++;
/* Check if the second color is white */
return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
&& (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
}
else return FALSE;
}
}
/***********************************************************************
* DIB_GetBitmapInfo
*
* Get the info from a bitmap header.
* Return 1 for INFOHEADER, 0 for COREHEADER,
* 4 for V4HEADER, 5 for V5HEADER, -1 for error.
*/
static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
LONG *height, WORD *bpp, DWORD *compr )
{
if (header->biSize == sizeof(BITMAPINFOHEADER))
{
*width = header->biWidth;
*height = header->biHeight;
*bpp = header->biBitCount;
*compr = header->biCompression;
return 1;
}
if (header->biSize == sizeof(BITMAPCOREHEADER))
{
const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
*width = core->bcWidth;
*height = core->bcHeight;
*bpp = core->bcBitCount;
*compr = 0;
return 0;
}
if (header->biSize == sizeof(BITMAPV4HEADER))
{
const BITMAPV4HEADER *v4hdr = (const BITMAPV4HEADER *)header;
*width = v4hdr->bV4Width;
*height = v4hdr->bV4Height;
*bpp = v4hdr->bV4BitCount;
*compr = v4hdr->bV4V4Compression;
return 4;
}
if (header->biSize == sizeof(BITMAPV5HEADER))
{
const BITMAPV5HEADER *v5hdr = (const BITMAPV5HEADER *)header;
*width = v5hdr->bV5Width;
*height = v5hdr->bV5Height;
*bpp = v5hdr->bV5BitCount;
*compr = v5hdr->bV5Compression;
return 5;
}
ERR("(%d): unknown/wrong size for header\n", header->biSize );
return -1;
}
/**********************************************************************
* CURSORICON_FindSharedIcon
*/
static HICON CURSORICON_FindSharedIcon( HMODULE hModule, HRSRC hRsrc )
{
HICON hIcon = 0;
ICONCACHE *ptr;
EnterCriticalSection( &IconCrst );
for ( ptr = IconAnchor; ptr; ptr = ptr->next )
if ( ptr->hModule == hModule && ptr->hRsrc == hRsrc )
{
ptr->count++;
hIcon = ptr->hIcon;
break;
}
LeaveCriticalSection( &IconCrst );
return hIcon;
}
/*************************************************************************
* CURSORICON_FindCache
*
* Given a handle, find the corresponding cache element
*
* PARAMS
* Handle [I] handle to an Image
*
* RETURNS
* Success: The cache entry
* Failure: NULL
*
*/
static ICONCACHE* CURSORICON_FindCache(HICON hIcon)
{
ICONCACHE *ptr;
ICONCACHE *pRet=NULL;
BOOL IsFound = FALSE;
EnterCriticalSection( &IconCrst );
for (ptr = IconAnchor; ptr != NULL && !IsFound; ptr = ptr->next)
{
if ( hIcon == ptr->hIcon )
{
IsFound = TRUE;
pRet = ptr;
}
}
LeaveCriticalSection( &IconCrst );
return pRet;
}
/**********************************************************************
* CURSORICON_AddSharedIcon
*/
static void CURSORICON_AddSharedIcon( HMODULE hModule, HRSRC hRsrc, HRSRC hGroupRsrc, HICON hIcon )
{
ICONCACHE *ptr = HeapAlloc( GetProcessHeap(), 0, sizeof(ICONCACHE) );
if ( !ptr ) return;
ptr->hModule = hModule;
ptr->hRsrc = hRsrc;
ptr->hIcon = hIcon;
ptr->hGroupRsrc = hGroupRsrc;
ptr->count = 1;
EnterCriticalSection( &IconCrst );
ptr->next = IconAnchor;
IconAnchor = ptr;
LeaveCriticalSection( &IconCrst );
}
/**********************************************************************
* CURSORICON_DelSharedIcon
*/
static INT CURSORICON_DelSharedIcon( HICON hIcon )
{
INT count = -1;
ICONCACHE *ptr;
EnterCriticalSection( &IconCrst );
for ( ptr = IconAnchor; ptr; ptr = ptr->next )
if ( ptr->hIcon == hIcon )
{
if ( ptr->count > 0 ) ptr->count--;
count = ptr->count;
break;
}
LeaveCriticalSection( &IconCrst );
return count;
}
/**********************************************************************
* get_icon_size
*/
BOOL get_icon_size( HICON handle, SIZE *size )
{
CURSORICONINFO *info;
if (!(info = get_icon_ptr( handle ))) return FALSE;
size->cx = info->nWidth;
size->cy = info->nHeight;
release_icon_ptr( handle, info );
return TRUE;
}
/*
* The following macro functions account for the irregularities of
* accessing cursor and icon resources in files and resource entries.
*/
typedef BOOL (*fnGetCIEntry)( LPVOID dir, int n,
int *width, int *height, int *bits );
/**********************************************************************
* CURSORICON_FindBestIcon
*
* Find the icon closest to the requested size and bit depth.
*/
static int CURSORICON_FindBestIcon( LPVOID dir, fnGetCIEntry get_entry,
int width, int height, int depth )
{
int i, cx, cy, bits, bestEntry = -1;
UINT iTotalDiff, iXDiff=0, iYDiff=0, iColorDiff;
UINT iTempXDiff, iTempYDiff, iTempColorDiff;
/* Find Best Fit */
iTotalDiff = 0xFFFFFFFF;
iColorDiff = 0xFFFFFFFF;
for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
{
iTempXDiff = abs(width - cx);
iTempYDiff = abs(height - cy);
if(iTotalDiff > (iTempXDiff + iTempYDiff))
{
iXDiff = iTempXDiff;
iYDiff = iTempYDiff;
iTotalDiff = iXDiff + iYDiff;
}
}
/* Find Best Colors for Best Fit */
for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
{
if(abs(width - cx) == iXDiff && abs(height - cy) == iYDiff)
{
iTempColorDiff = abs(depth - bits);
if(iColorDiff > iTempColorDiff)
{
bestEntry = i;
iColorDiff = iTempColorDiff;
}
}
}
return bestEntry;
}
static BOOL CURSORICON_GetResIconEntry( LPVOID dir, int n,
int *width, int *height, int *bits )
{
CURSORICONDIR *resdir = dir;
ICONRESDIR *icon;
if ( resdir->idCount <= n )
return FALSE;
icon = &resdir->idEntries[n].ResInfo.icon;
*width = icon->bWidth;
*height = icon->bHeight;
*bits = resdir->idEntries[n].wBitCount;
return TRUE;
}
/**********************************************************************
* CURSORICON_FindBestCursor
*
* Find the cursor closest to the requested size.
*
* FIXME: parameter 'color' ignored.
*/
static int CURSORICON_FindBestCursor( LPVOID dir, fnGetCIEntry get_entry,
int width, int height, int depth )
{
int i, maxwidth, maxheight, cx, cy, bits, bestEntry = -1;
/* Double height to account for AND and XOR masks */
height *= 2;
/* First find the largest one smaller than or equal to the requested size*/
maxwidth = maxheight = 0;
for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
{
if ((cx <= width) && (cy <= height) &&
(cx > maxwidth) && (cy > maxheight))
{
bestEntry = i;
maxwidth = cx;
maxheight = cy;
}
}
if (bestEntry != -1) return bestEntry;
/* Now find the smallest one larger than the requested size */
maxwidth = maxheight = 255;
for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
{
if (((cx < maxwidth) && (cy < maxheight)) || (bestEntry == -1))
{
bestEntry = i;
maxwidth = cx;
maxheight = cy;
}
}
return bestEntry;
}
static BOOL CURSORICON_GetResCursorEntry( LPVOID dir, int n,
int *width, int *height, int *bits )
{
CURSORICONDIR *resdir = dir;
CURSORDIR *cursor;
if ( resdir->idCount <= n )
return FALSE;
cursor = &resdir->idEntries[n].ResInfo.cursor;
*width = cursor->wWidth;
*height = cursor->wHeight;
*bits = resdir->idEntries[n].wBitCount;
return TRUE;
}
static CURSORICONDIRENTRY *CURSORICON_FindBestIconRes( CURSORICONDIR * dir,
int width, int height, int depth )
{
int n;
n = CURSORICON_FindBestIcon( dir, CURSORICON_GetResIconEntry,
width, height, depth );
if ( n < 0 )
return NULL;
return &dir->idEntries[n];
}
static CURSORICONDIRENTRY *CURSORICON_FindBestCursorRes( CURSORICONDIR *dir,
int width, int height, int depth )
{
int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetResCursorEntry,
width, height, depth );
if ( n < 0 )
return NULL;
return &dir->idEntries[n];
}
static BOOL CURSORICON_GetFileEntry( LPVOID dir, int n,
int *width, int *height, int *bits )
{
CURSORICONFILEDIR *filedir = dir;
CURSORICONFILEDIRENTRY *entry;
if ( filedir->idCount <= n )
return FALSE;
entry = &filedir->idEntries[n];
*width = entry->bWidth;
*height = entry->bHeight;
*bits = entry->bColorCount;
return TRUE;
}
static CURSORICONFILEDIRENTRY *CURSORICON_FindBestCursorFile( CURSORICONFILEDIR *dir,
int width, int height, int depth )
{
int n = CURSORICON_FindBestCursor( dir, CURSORICON_GetFileEntry,
width, height, depth );
if ( n < 0 )
return NULL;
return &dir->idEntries[n];
}
static CURSORICONFILEDIRENTRY *CURSORICON_FindBestIconFile( CURSORICONFILEDIR *dir,
int width, int height, int depth )
{
int n = CURSORICON_FindBestIcon( dir, CURSORICON_GetFileEntry,
width, height, depth );
if ( n < 0 )
return NULL;
return &dir->idEntries[n];
}
/***********************************************************************
* stretch_blt_icon
*
* A helper function that stretches a bitmap buffer into an HBITMAP.
*
* PARAMS
* hDest [I] The handle of the destination bitmap.
* pDestInfo [I] The BITMAPINFO of the destination bitmap.
* pSrcInfo [I] The BITMAPINFO of the source bitmap.
* pSrcBits [I] A pointer to the source bitmap buffer.
**/
static BOOL stretch_blt_icon(HBITMAP hDest, BITMAPINFO *pDestInfo, BITMAPINFO *pSrcInfo, char *pSrcBits)
{
HBITMAP hOld;
BOOL res = FALSE;
HDC hdcMem = CreateCompatibleDC(screen_dc);
if (hdcMem)
{
hOld = SelectObject(hdcMem, hDest);
res = StretchDIBits(hdcMem,
0, 0, pDestInfo->bmiHeader.biWidth, pDestInfo->bmiHeader.biHeight,
0, 0, pSrcInfo->bmiHeader.biWidth, pSrcInfo->bmiHeader.biHeight,
pSrcBits, pSrcInfo, DIB_RGB_COLORS, SRCCOPY);
SelectObject(hdcMem, hOld);
DeleteDC( hdcMem );
}
return res;
}
static HICON CURSORICON_CreateIconFromBMI( BITMAPINFO *bmi,
POINT16 hotspot, BOOL bIcon,
DWORD dwVersion,
INT width, INT height,
UINT cFlag )
{
HICON hObj;
int sizeAnd, sizeXor;
HBITMAP hAndBits = 0, hXorBits = 0; /* error condition for later */
BITMAP bmpXor, bmpAnd;
INT size;
BITMAPINFO *pSrcInfo, *pDestInfo;
if (dwVersion == 0x00020000)
{
FIXME_(cursor)("\t2.xx resources are not supported\n");
return 0;
}
/* Check bitmap header */
if ( (bmi->bmiHeader.biSize != sizeof(BITMAPCOREHEADER)) &&
(bmi->bmiHeader.biSize != sizeof(BITMAPINFOHEADER) ||
bmi->bmiHeader.biCompression != BI_RGB) )
{
WARN_(cursor)("\tinvalid resource bitmap header.\n");
return 0;
}
size = bitmap_info_size( bmi, DIB_RGB_COLORS );
if (!width) width = bmi->bmiHeader.biWidth;
if (!height) height = bmi->bmiHeader.biHeight/2;
/* Scale the hotspot */
if (((bmi->bmiHeader.biHeight/2 != height) || (bmi->bmiHeader.biWidth != width)) &&
hotspot.x != ICON_HOTSPOT && hotspot.y != ICON_HOTSPOT)
{
hotspot.x = (hotspot.x * width) / bmi->bmiHeader.biWidth;
hotspot.y = (hotspot.y * height) / (bmi->bmiHeader.biHeight / 2);
}
if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
if (screen_dc)
{
/* Make sure we have room for the monochrome bitmap later on.
* Note that BITMAPINFOINFO and BITMAPCOREHEADER are the same
* up to and including the biBitCount. In-memory icon resource
* format is as follows:
*
* BITMAPINFOHEADER icHeader // DIB header
* RGBQUAD icColors[] // Color table
* BYTE icXOR[] // DIB bits for XOR mask
* BYTE icAND[] // DIB bits for AND mask
*/
pSrcInfo = HeapAlloc( GetProcessHeap(), 0,
max(size, sizeof(BITMAPINFOHEADER) + 2*sizeof(RGBQUAD)));
pDestInfo = HeapAlloc( GetProcessHeap(), 0,
max(size, sizeof(BITMAPINFOHEADER) + 2*sizeof(RGBQUAD)));
if (pSrcInfo && pDestInfo)
{
memcpy( pSrcInfo, bmi, size );
pSrcInfo->bmiHeader.biHeight /= 2;
memcpy( pDestInfo, bmi, size );
pDestInfo->bmiHeader.biWidth = width;
pDestInfo->bmiHeader.biHeight = height;
pDestInfo->bmiHeader.biSizeImage = 0;
/* Create the XOR bitmap */
if(pSrcInfo->bmiHeader.biBitCount == 32)
{
void *pDIBBuffer = NULL;
hXorBits = CreateDIBSection(screen_dc, pDestInfo, DIB_RGB_COLORS, &pDIBBuffer, NULL, 0);
if(hXorBits)
{
if (!stretch_blt_icon(hXorBits, pDestInfo, pSrcInfo, (char*)bmi + size))
{
DeleteObject(hXorBits);
hXorBits = 0;
}
}
}
else
{
hXorBits = CreateCompatibleBitmap(screen_dc, width, height);
if(hXorBits)
{
if(!stretch_blt_icon(hXorBits, pDestInfo, pSrcInfo, (char*)bmi + size))
{
DeleteObject(hXorBits);
hXorBits = 0;
}
}
}
if( hXorBits )
{
char* xbits = (char *)bmi + size +
get_dib_width_bytes( bmi->bmiHeader.biWidth,
bmi->bmiHeader.biBitCount ) * abs( bmi->bmiHeader.biHeight ) / 2;
pSrcInfo->bmiHeader.biBitCount = 1;
if (pSrcInfo->bmiHeader.biSize != sizeof(BITMAPCOREHEADER))
{
RGBQUAD *rgb = pSrcInfo->bmiColors;
pSrcInfo->bmiHeader.biClrUsed = pSrcInfo->bmiHeader.biClrImportant = 2;
rgb[0].rgbBlue = rgb[0].rgbGreen = rgb[0].rgbRed = 0x00;
rgb[1].rgbBlue = rgb[1].rgbGreen = rgb[1].rgbRed = 0xff;
rgb[0].rgbReserved = rgb[1].rgbReserved = 0;
}
else
{
RGBTRIPLE *rgb = (RGBTRIPLE *)(((BITMAPCOREHEADER *)pSrcInfo) + 1);
rgb[0].rgbtBlue = rgb[0].rgbtGreen = rgb[0].rgbtRed = 0x00;
rgb[1].rgbtBlue = rgb[1].rgbtGreen = rgb[1].rgbtRed = 0xff;
}
/* Create the AND bitmap */
hAndBits = CreateBitmap(width, height, 1, 1, NULL);
if(!stretch_blt_icon(hAndBits, pDestInfo, pSrcInfo, xbits))
{
DeleteObject(hAndBits);
hAndBits = 0;
}
if( !hAndBits )
{
DeleteObject( hXorBits );
hXorBits = 0;
}
}
}
HeapFree( GetProcessHeap(), 0, pSrcInfo );
HeapFree( GetProcessHeap(), 0, pDestInfo );
}
if( !hXorBits || !hAndBits )
{
WARN_(cursor)("\tunable to create an icon bitmap.\n");
return 0;
}
/* Now create the CURSORICONINFO structure */
GetObjectA( hXorBits, sizeof(bmpXor), &bmpXor );
GetObjectA( hAndBits, sizeof(bmpAnd), &bmpAnd );
sizeXor = bmpXor.bmHeight * bmpXor.bmWidthBytes;
sizeAnd = bmpAnd.bmHeight * bmpAnd.bmWidthBytes;
hObj = alloc_icon_handle( sizeof(CURSORICONINFO) + sizeXor + sizeAnd );
if (hObj)
{
CURSORICONINFO *info = get_icon_ptr( hObj );
info->ptHotSpot.x = hotspot.x;
info->ptHotSpot.y = hotspot.y;
info->nWidth = bmpXor.bmWidth;
info->nHeight = bmpXor.bmHeight;
info->nWidthBytes = bmpXor.bmWidthBytes;
info->bPlanes = bmpXor.bmPlanes;
info->bBitsPerPixel = bmpXor.bmBitsPixel;
/* Transfer the bitmap bits to the CURSORICONINFO structure */
GetBitmapBits( hAndBits, sizeAnd, info + 1 );
GetBitmapBits( hXorBits, sizeXor, (char *)(info + 1) + sizeAnd );
release_icon_ptr( hObj, info );
}
DeleteObject( hAndBits );
DeleteObject( hXorBits );
return hObj;
}
/**********************************************************************
* .ANI cursor support
*/
#define RIFF_FOURCC( c0, c1, c2, c3 ) \
( (DWORD)(BYTE)(c0) | ( (DWORD)(BYTE)(c1) << 8 ) | \
( (DWORD)(BYTE)(c2) << 16 ) | ( (DWORD)(BYTE)(c3) << 24 ) )
#define ANI_RIFF_ID RIFF_FOURCC('R', 'I', 'F', 'F')
#define ANI_LIST_ID RIFF_FOURCC('L', 'I', 'S', 'T')
#define ANI_ACON_ID RIFF_FOURCC('A', 'C', 'O', 'N')
#define ANI_anih_ID RIFF_FOURCC('a', 'n', 'i', 'h')
#define ANI_seq__ID RIFF_FOURCC('s', 'e', 'q', ' ')
#define ANI_fram_ID RIFF_FOURCC('f', 'r', 'a', 'm')
#define ANI_FLAG_ICON 0x1
#define ANI_FLAG_SEQUENCE 0x2
typedef struct {
DWORD header_size;
DWORD num_frames;
DWORD num_steps;
DWORD width;
DWORD height;
DWORD bpp;
DWORD num_planes;
DWORD display_rate;
DWORD flags;
} ani_header;
typedef struct {
DWORD data_size;
const unsigned char *data;
} riff_chunk_t;
static void dump_ani_header( const ani_header *header )
{
TRACE(" header size: %d\n", header->header_size);
TRACE(" frames: %d\n", header->num_frames);
TRACE(" steps: %d\n", header->num_steps);
TRACE(" width: %d\n", header->width);
TRACE(" height: %d\n", header->height);
TRACE(" bpp: %d\n", header->bpp);
TRACE(" planes: %d\n", header->num_planes);
TRACE(" display rate: %d\n", header->display_rate);
TRACE(" flags: 0x%08x\n", header->flags);
}
/*
* RIFF:
* DWORD "RIFF"
* DWORD size
* DWORD riff_id
* BYTE[] data
*
* LIST:
* DWORD "LIST"
* DWORD size
* DWORD list_id
* BYTE[] data
*
* CHUNK:
* DWORD chunk_id
* DWORD size
* BYTE[] data
*/
static void riff_find_chunk( DWORD chunk_id, DWORD chunk_type, const riff_chunk_t *parent_chunk, riff_chunk_t *chunk )
{
const unsigned char *ptr = parent_chunk->data;
const unsigned char *end = parent_chunk->data + (parent_chunk->data_size - (2 * sizeof(DWORD)));
if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) end -= sizeof(DWORD);
while (ptr < end)
{
if ((!chunk_type && *(DWORD *)ptr == chunk_id )
|| (chunk_type && *(DWORD *)ptr == chunk_type && *((DWORD *)ptr + 2) == chunk_id ))
{
ptr += sizeof(DWORD);
chunk->data_size = (*(DWORD *)ptr + 1) & ~1;
ptr += sizeof(DWORD);
if (chunk_type == ANI_LIST_ID || chunk_type == ANI_RIFF_ID) ptr += sizeof(DWORD);
chunk->data = ptr;
return;
}
ptr += sizeof(DWORD);
ptr += (*(DWORD *)ptr + 1) & ~1;
ptr += sizeof(DWORD);
}
}
/*
* .ANI layout:
*
* RIFF:'ACON' RIFF chunk
* |- CHUNK:'anih' Header
* |- CHUNK:'seq ' Sequence information (optional)
* \- LIST:'fram' Frame list
* |- CHUNK:icon Cursor frames
* |- CHUNK:icon
* |- ...
* \- CHUNK:icon
*/
static HCURSOR CURSORICON_CreateIconFromANI( const LPBYTE bits, DWORD bits_size,
INT width, INT height, INT depth )
{
HCURSOR cursor;
ani_header header = {0};
LPBYTE frame_bits = 0;
POINT16 hotspot;
CURSORICONFILEDIRENTRY *entry;
riff_chunk_t root_chunk = { bits_size, bits };
riff_chunk_t ACON_chunk = {0};
riff_chunk_t anih_chunk = {0};
riff_chunk_t fram_chunk = {0};
const unsigned char *icon_data;
TRACE("bits %p, bits_size %d\n", bits, bits_size);
if (!bits) return 0;
riff_find_chunk( ANI_ACON_ID, ANI_RIFF_ID, &root_chunk, &ACON_chunk );
if (!ACON_chunk.data)
{
ERR("Failed to get root chunk.\n");
return 0;
}
riff_find_chunk( ANI_anih_ID, 0, &ACON_chunk, &anih_chunk );
if (!anih_chunk.data)
{
ERR("Failed to get 'anih' chunk.\n");
return 0;
}
memcpy( &header, anih_chunk.data, sizeof(header) );
dump_ani_header( &header );
riff_find_chunk( ANI_fram_ID, ANI_LIST_ID, &ACON_chunk, &fram_chunk );
if (!fram_chunk.data)
{
ERR("Failed to get icon list.\n");
return 0;
}
/* FIXME: For now, just load the first frame. Before we can load all the
* frames, we need to write the needed code in wineserver, etc. to handle
* cursors. Once this code is written, we can extend it to support .ani
* cursors and then update user32 and winex11.drv to load all frames.
*
* Hopefully this will at least make some games (C&C3, etc.) more playable
* in the meantime.
*/
FIXME("Loading all frames for .ani cursors not implemented.\n");
icon_data = fram_chunk.data + (2 * sizeof(DWORD));
entry = CURSORICON_FindBestIconFile( (CURSORICONFILEDIR *) icon_data,
width, height, depth );
frame_bits = HeapAlloc( GetProcessHeap(), 0, entry->dwDIBSize );
memcpy( frame_bits, icon_data + entry->dwDIBOffset, entry->dwDIBSize );
if (!header.width || !header.height)
{
header.width = entry->bWidth;
header.height = entry->bHeight;
}
hotspot.x = entry->xHotspot;
hotspot.y = entry->yHotspot;
cursor = CURSORICON_CreateIconFromBMI( (BITMAPINFO *) frame_bits, hotspot,
FALSE, 0x00030000, header.width, header.height, 0 );
HeapFree( GetProcessHeap(), 0, frame_bits );
return cursor;
}
/**********************************************************************
* CreateIconFromResourceEx (USER32.@)
*
* FIXME: Convert to mono when cFlag is LR_MONOCHROME. Do something
* with cbSize parameter as well.
*/
HICON WINAPI CreateIconFromResourceEx( LPBYTE bits, UINT cbSize,
BOOL bIcon, DWORD dwVersion,
INT width, INT height,
UINT cFlag )
{
POINT16 hotspot;
BITMAPINFO *bmi;
hotspot.x = ICON_HOTSPOT;
hotspot.y = ICON_HOTSPOT;
TRACE_(cursor)("%p (%u bytes), ver %08x, %ix%i %s %s\n",
bits, cbSize, dwVersion, width, height,
bIcon ? "icon" : "cursor", (cFlag & LR_MONOCHROME) ? "mono" : "" );
if (bIcon)
bmi = (BITMAPINFO *)bits;
else /* get the hotspot */
{
POINT16 *pt = (POINT16 *)bits;
hotspot = *pt;
bmi = (BITMAPINFO *)(pt + 1);
}
return CURSORICON_CreateIconFromBMI( bmi, hotspot, bIcon, dwVersion,
width, height, cFlag );
}
/**********************************************************************
* CreateIconFromResource (USER32.@)
*/
HICON WINAPI CreateIconFromResource( LPBYTE bits, UINT cbSize,
BOOL bIcon, DWORD dwVersion)
{
return CreateIconFromResourceEx( bits, cbSize, bIcon, dwVersion, 0,0,0);
}
static HICON CURSORICON_LoadFromFile( LPCWSTR filename,
INT width, INT height, INT depth,
BOOL fCursor, UINT loadflags)
{
CURSORICONFILEDIRENTRY *entry;
CURSORICONFILEDIR *dir;
DWORD filesize = 0;
HICON hIcon = 0;
LPBYTE bits;
POINT16 hotspot;
TRACE("loading %s\n", debugstr_w( filename ));
bits = map_fileW( filename, &filesize );
if (!bits)
return hIcon;
/* Check for .ani. */
if (memcmp( bits, "RIFF", 4 ) == 0)
{
hIcon = CURSORICON_CreateIconFromANI( bits, filesize, width, height,
depth );
goto end;
}
dir = (CURSORICONFILEDIR*) bits;
if ( filesize < sizeof(*dir) )
goto end;
if ( filesize < (sizeof(*dir) + sizeof(dir->idEntries[0])*(dir->idCount-1)) )
goto end;
if ( fCursor )
entry = CURSORICON_FindBestCursorFile( dir, width, height, depth );
else
entry = CURSORICON_FindBestIconFile( dir, width, height, depth );
if ( !entry )
goto end;
/* check that we don't run off the end of the file */
if ( entry->dwDIBOffset > filesize )
goto end;
if ( entry->dwDIBOffset + entry->dwDIBSize > filesize )
goto end;
/* Set the actual hotspot for cursors and ICON_HOTSPOT for icons. */
if ( fCursor )
{
hotspot.x = entry->xHotspot;
hotspot.y = entry->yHotspot;
}
else
{
hotspot.x = ICON_HOTSPOT;
hotspot.y = ICON_HOTSPOT;
}
hIcon = CURSORICON_CreateIconFromBMI( (BITMAPINFO *)&bits[entry->dwDIBOffset],
hotspot, !fCursor, 0x00030000,
width, height, loadflags );
end:
TRACE("loaded %s -> %p\n", debugstr_w( filename ), hIcon );
UnmapViewOfFile( bits );
return hIcon;
}
/**********************************************************************
* CURSORICON_Load
*
* Load a cursor or icon from resource or file.
*/
static HICON CURSORICON_Load(HINSTANCE hInstance, LPCWSTR name,
INT width, INT height, INT depth,
BOOL fCursor, UINT loadflags)
{
HANDLE handle = 0;
HICON hIcon = 0;
HRSRC hRsrc, hGroupRsrc;
CURSORICONDIR *dir;
CURSORICONDIRENTRY *dirEntry;
LPBYTE bits;
WORD wResId;
DWORD dwBytesInRes;
TRACE("%p, %s, %dx%d, depth %d, fCursor %d, flags 0x%04x\n",
hInstance, debugstr_w(name), width, height, depth, fCursor, loadflags);
if ( loadflags & LR_LOADFROMFILE ) /* Load from file */
return CURSORICON_LoadFromFile( name, width, height, depth, fCursor, loadflags );
if (!hInstance) hInstance = user32_module; /* Load OEM cursor/icon */
/* don't cache 16-bit instances (FIXME: should never get 16-bit instances in the first place) */
if ((ULONG_PTR)hInstance >> 16 == 0) loadflags &= ~LR_SHARED;
/* Get directory resource ID */
if (!(hRsrc = FindResourceW( hInstance, name,
(LPWSTR)(fCursor ? RT_GROUP_CURSOR : RT_GROUP_ICON) )))
return 0;
hGroupRsrc = hRsrc;
/* Find the best entry in the directory */
if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
if (!(dir = LockResource( handle ))) return 0;
if (fCursor)
dirEntry = CURSORICON_FindBestCursorRes( dir, width, height, depth );
else
dirEntry = CURSORICON_FindBestIconRes( dir, width, height, depth );
if (!dirEntry) return 0;
wResId = dirEntry->wResId;
dwBytesInRes = dirEntry->dwBytesInRes;
FreeResource( handle );
/* Load the resource */
if (!(hRsrc = FindResourceW(hInstance,MAKEINTRESOURCEW(wResId),
(LPWSTR)(fCursor ? RT_CURSOR : RT_ICON) ))) return 0;
/* If shared icon, check whether it was already loaded */
if ( (loadflags & LR_SHARED)
&& (hIcon = CURSORICON_FindSharedIcon( hInstance, hRsrc ) ) != 0 )
return hIcon;
if (!(handle = LoadResource( hInstance, hRsrc ))) return 0;
bits = LockResource( handle );
hIcon = CreateIconFromResourceEx( bits, dwBytesInRes,
!fCursor, 0x00030000, width, height, loadflags);
FreeResource( handle );
/* If shared icon, add to icon cache */
if ( hIcon && (loadflags & LR_SHARED) )
CURSORICON_AddSharedIcon( hInstance, hRsrc, hGroupRsrc, hIcon );
return hIcon;
}
/*************************************************************************
* CURSORICON_ExtCopy
*
* Copies an Image from the Cache if LR_COPYFROMRESOURCE is specified
*
* PARAMS
* Handle [I] handle to an Image
* nType [I] Type of Handle (IMAGE_CURSOR | IMAGE_ICON)
* iDesiredCX [I] The Desired width of the Image
* iDesiredCY [I] The desired height of the Image
* nFlags [I] The flags from CopyImage
*
* RETURNS
* Success: The new handle of the Image
*
* NOTES
* LR_COPYDELETEORG and LR_MONOCHROME are currently not implemented.
* LR_MONOCHROME should be implemented by CreateIconFromResourceEx.
* LR_COPYFROMRESOURCE will only work if the Image is in the Cache.
*
*
*/
static HICON CURSORICON_ExtCopy(HICON hIcon, UINT nType,
INT iDesiredCX, INT iDesiredCY,
UINT nFlags)
{
HICON hNew=0;
TRACE_(icon)("hIcon %p, nType %u, iDesiredCX %i, iDesiredCY %i, nFlags %u\n",
hIcon, nType, iDesiredCX, iDesiredCY, nFlags);
if(hIcon == 0)
{
return 0;
}
/* Best Fit or Monochrome */
if( (nFlags & LR_COPYFROMRESOURCE
&& (iDesiredCX > 0 || iDesiredCY > 0))
|| nFlags & LR_MONOCHROME)
{
ICONCACHE* pIconCache = CURSORICON_FindCache(hIcon);
/* Not Found in Cache, then do a straight copy
*/
if(pIconCache == NULL)
{
hNew = CopyIcon( hIcon );
if(nFlags & LR_COPYFROMRESOURCE)
{
TRACE_(icon)("LR_COPYFROMRESOURCE: Failed to load from cache\n");
}
}
else
{
int iTargetCY = iDesiredCY, iTargetCX = iDesiredCX;
LPBYTE pBits;
HANDLE hMem;
HRSRC hRsrc;
DWORD dwBytesInRes;
WORD wResId;
CURSORICONDIR *pDir;
CURSORICONDIRENTRY *pDirEntry;
BOOL bIsIcon = (nType == IMAGE_ICON);
/* Completing iDesiredCX CY for Monochrome Bitmaps if needed
*/
if(((nFlags & LR_MONOCHROME) && !(nFlags & LR_COPYFROMRESOURCE))
|| (iDesiredCX == 0 && iDesiredCY == 0))
{
iDesiredCY = GetSystemMetrics(bIsIcon ?
SM_CYICON : SM_CYCURSOR);
iDesiredCX = GetSystemMetrics(bIsIcon ?
SM_CXICON : SM_CXCURSOR);
}
/* Retrieve the CURSORICONDIRENTRY
*/
if (!(hMem = LoadResource( pIconCache->hModule ,
pIconCache->hGroupRsrc)))
{
return 0;
}
if (!(pDir = LockResource( hMem )))
{
return 0;
}
/* Find Best Fit
*/
if(bIsIcon)
{
pDirEntry = CURSORICON_FindBestIconRes(
pDir, iDesiredCX, iDesiredCY, 256 );
}
else
{
pDirEntry = CURSORICON_FindBestCursorRes(
pDir, iDesiredCX, iDesiredCY, 1);
}
wResId = pDirEntry->wResId;
dwBytesInRes = pDirEntry->dwBytesInRes;
FreeResource(hMem);
TRACE_(icon)("ResID %u, BytesInRes %u, Width %d, Height %d DX %d, DY %d\n",
wResId, dwBytesInRes, pDirEntry->ResInfo.icon.bWidth,
pDirEntry->ResInfo.icon.bHeight, iDesiredCX, iDesiredCY);
/* Get the Best Fit
*/
if (!(hRsrc = FindResourceW(pIconCache->hModule ,
MAKEINTRESOURCEW(wResId), (LPWSTR)(bIsIcon ? RT_ICON : RT_CURSOR))))
{
return 0;
}
if (!(hMem = LoadResource( pIconCache->hModule , hRsrc )))
{
return 0;
}
pBits = LockResource( hMem );
if(nFlags & LR_DEFAULTSIZE)
{
iTargetCY = GetSystemMetrics(SM_CYICON);
iTargetCX = GetSystemMetrics(SM_CXICON);
}
/* Create a New Icon with the proper dimension
*/
hNew = CreateIconFromResourceEx( pBits, dwBytesInRes,
bIsIcon, 0x00030000, iTargetCX, iTargetCY, nFlags);
FreeResource(hMem);
}
}
else hNew = CopyIcon( hIcon );
return hNew;
}
/***********************************************************************
* CreateCursor (USER32.@)
*/
HCURSOR WINAPI CreateCursor( HINSTANCE hInstance,
INT xHotSpot, INT yHotSpot,
INT nWidth, INT nHeight,
LPCVOID lpANDbits, LPCVOID lpXORbits )
{
ICONINFO info;
HCURSOR hCursor;
TRACE_(cursor)("%dx%d spot=%d,%d xor=%p and=%p\n",
nWidth, nHeight, xHotSpot, yHotSpot, lpXORbits, lpANDbits);
info.fIcon = FALSE;
info.xHotspot = xHotSpot;
info.yHotspot = yHotSpot;
info.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
info.hbmColor = CreateBitmap( nWidth, nHeight, 1, 1, lpXORbits );
hCursor = CreateIconIndirect( &info );
DeleteObject( info.hbmMask );
DeleteObject( info.hbmColor );
return hCursor;
}
/***********************************************************************
* CreateIcon (USER32.@)
*
* Creates an icon based on the specified bitmaps. The bitmaps must be
* provided in a device dependent format and will be resized to
* (SM_CXICON,SM_CYICON) and depth converted to match the screen's color
* depth. The provided bitmaps must be top-down bitmaps.
* Although Windows does not support 15bpp(*) this API must support it
* for Winelib applications.
*
* (*) Windows does not support 15bpp but it supports the 555 RGB 16bpp
* format!
*
* RETURNS
* Success: handle to an icon
* Failure: NULL
*
* FIXME: Do we need to resize the bitmaps?
*/
HICON WINAPI CreateIcon(
HINSTANCE hInstance, /* [in] the application's hInstance */
INT nWidth, /* [in] the width of the provided bitmaps */
INT nHeight, /* [in] the height of the provided bitmaps */
BYTE bPlanes, /* [in] the number of planes in the provided bitmaps */
BYTE bBitsPixel, /* [in] the number of bits per pixel of the lpXORbits bitmap */
LPCVOID lpANDbits, /* [in] a monochrome bitmap representing the icon's mask */
LPCVOID lpXORbits) /* [in] the icon's 'color' bitmap */
{
ICONINFO iinfo;
HICON hIcon;
TRACE_(icon)("%dx%d, planes %d, bpp %d, xor %p, and %p\n",
nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits, lpANDbits);
iinfo.fIcon = TRUE;
iinfo.xHotspot = ICON_HOTSPOT;
iinfo.yHotspot = ICON_HOTSPOT;
iinfo.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
iinfo.hbmColor = CreateBitmap( nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits );
hIcon = CreateIconIndirect( &iinfo );
DeleteObject( iinfo.hbmMask );
DeleteObject( iinfo.hbmColor );
return hIcon;
}
/***********************************************************************
* CopyIcon (USER32.@)
*/
HICON WINAPI CopyIcon( HICON hIcon )
{
CURSORICONINFO *ptrOld, *ptrNew;
int size;
HICON hNew;
if (!(ptrOld = get_icon_ptr( hIcon ))) return 0;
size = sizeof(CURSORICONINFO);
size += ptrOld->nHeight * get_bitmap_width_bytes( ptrOld->nWidth, 1 ); /* and bitmap */
size += ptrOld->nHeight * ptrOld->nWidthBytes; /* xor bitmap */
hNew = alloc_icon_handle( size );
ptrNew = get_icon_ptr( hNew );
memcpy( ptrNew, ptrOld, size );
release_icon_ptr( hIcon, ptrOld );
release_icon_ptr( hNew, ptrNew );
return hNew;
}
/***********************************************************************
* DestroyIcon (USER32.@)
*/
BOOL WINAPI DestroyIcon( HICON hIcon )
{
TRACE_(icon)("%p\n", hIcon );
if (CURSORICON_DelSharedIcon( hIcon ) == -1)
free_icon_handle( hIcon );
return TRUE;
}
/***********************************************************************
* DestroyCursor (USER32.@)
*/
BOOL WINAPI DestroyCursor( HCURSOR hCursor )
{
if (get_user_thread_info()->cursor == hCursor)
{
WARN_(cursor)("Destroying active cursor!\n" );
return FALSE;
}
return DestroyIcon( hCursor );
}
/***********************************************************************
* bitmap_has_alpha_channel
*
* Analyses bits bitmap to determine if alpha data is present.
*
* PARAMS
* bpp [I] The bits-per-pixel of the bitmap
* bitmapBits [I] A pointer to the bitmap data
* bitmapLength [I] The length of the bitmap in bytes
*
* RETURNS
* TRUE if an alpha channel is discovered, FALSE
*
* NOTE
* Windows' behaviour is that if the icon bitmap is 32-bit and at
* least one pixel has a non-zero alpha, then the bitmap is a
* treated as having an alpha channel transparentcy. Otherwise,
* it's treated as being completely opaque.
*
*/
static BOOL bitmap_has_alpha_channel( int bpp, unsigned char *bitmapBits,
unsigned int bitmapLength )
{
/* Detect an alpha channel by looking for non-zero alpha pixels */
if(bpp == 32)
{
unsigned int offset;
for(offset = 3; offset < bitmapLength; offset += 4)
{
if(bitmapBits[offset] != 0)
{
return TRUE;
}
}
}
return FALSE;
}
/***********************************************************************
* premultiply_alpha_channel
*
* Premultiplies the color channels of a 32-bit bitmap by the alpha
* channel. This is a necessary step that must be carried out on
* the image before it is passed to GdiAlphaBlend
*
* PARAMS
* destBitmap [I] The destination bitmap buffer
* srcBitmap [I] The source bitmap buffer
* bitmapLength [I] The length of the bitmap in bytes
*
*/
static void premultiply_alpha_channel( unsigned char *destBitmap,
unsigned char *srcBitmap,
unsigned int bitmapLength )
{
unsigned char *destPixel = destBitmap;
unsigned char *srcPixel = srcBitmap;
while(destPixel < destBitmap + bitmapLength)
{
unsigned char alpha = srcPixel[3];
*(destPixel++) = *(srcPixel++) * alpha / 255;
*(destPixel++) = *(srcPixel++) * alpha / 255;
*(destPixel++) = *(srcPixel++) * alpha / 255;
*(destPixel++) = *(srcPixel++);
}
}
/***********************************************************************
* DrawIcon (USER32.@)
*/
BOOL WINAPI DrawIcon( HDC hdc, INT x, INT y, HICON hIcon )
{
CURSORICONINFO *ptr;
HDC hMemDC;
HBITMAP hXorBits = NULL, hAndBits = NULL, hBitTemp = NULL;
COLORREF oldFg, oldBg;
unsigned char *xorBitmapBits;
unsigned int dibLength;
TRACE("%p, (%d,%d), %p\n", hdc, x, y, hIcon);
if (!(ptr = get_icon_ptr( hIcon ))) return FALSE;
if (!(hMemDC = CreateCompatibleDC( hdc )))
{
release_icon_ptr( hIcon, ptr );
return FALSE;
}
dibLength = ptr->nHeight * get_bitmap_width_bytes(
ptr->nWidth, ptr->bBitsPerPixel);
xorBitmapBits = (unsigned char *)(ptr + 1) + ptr->nHeight *
get_bitmap_width_bytes(ptr->nWidth, 1);
oldFg = SetTextColor( hdc, RGB(0,0,0) );
oldBg = SetBkColor( hdc, RGB(255,255,255) );
if(bitmap_has_alpha_channel(ptr->bBitsPerPixel, xorBitmapBits, dibLength))
{
BITMAPINFOHEADER bmih;
unsigned char *dibBits;
memset(&bmih, 0, sizeof(BITMAPINFOHEADER));
bmih.biSize = sizeof(BITMAPINFOHEADER);
bmih.biWidth = ptr->nWidth;
bmih.biHeight = -ptr->nHeight;
bmih.biPlanes = ptr->bPlanes;
bmih.biBitCount = 32;
bmih.biCompression = BI_RGB;
hXorBits = CreateDIBSection(hdc, (BITMAPINFO*)&bmih, DIB_RGB_COLORS,
(void*)&dibBits, NULL, 0);
if (hXorBits && dibBits)
{
BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
/* Do the alpha blending render */
premultiply_alpha_channel(dibBits, xorBitmapBits, dibLength);
hBitTemp = SelectObject( hMemDC, hXorBits );
/* Destination width/height has to be "System Large" size */
GdiAlphaBlend(hdc, x, y, GetSystemMetrics(SM_CXICON),
GetSystemMetrics(SM_CYICON), hMemDC,
0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
SelectObject( hMemDC, hBitTemp );
}
}
else
{
hAndBits = CreateBitmap( ptr->nWidth, ptr->nHeight, 1, 1, ptr + 1 );
hXorBits = CreateBitmap( ptr->nWidth, ptr->nHeight, ptr->bPlanes,
ptr->bBitsPerPixel, xorBitmapBits);
if (hXorBits && hAndBits)
{
hBitTemp = SelectObject( hMemDC, hAndBits );
StretchBlt( hdc, x, y, GetSystemMetrics(SM_CXICON),
GetSystemMetrics(SM_CYICON), hMemDC, 0, 0,
ptr->nWidth, ptr->nHeight, SRCAND );
SelectObject( hMemDC, hXorBits );
StretchBlt( hdc, x, y, GetSystemMetrics(SM_CXICON),
GetSystemMetrics(SM_CYICON), hMemDC, 0, 0,
ptr->nWidth, ptr->nHeight, SRCINVERT );
SelectObject( hMemDC, hBitTemp );
}
}
DeleteDC( hMemDC );
if (hXorBits) DeleteObject( hXorBits );
if (hAndBits) DeleteObject( hAndBits );
release_icon_ptr( hIcon, ptr );
SetTextColor( hdc, oldFg );
SetBkColor( hdc, oldBg );
return TRUE;
}
/***********************************************************************
* SetCursor (USER32.@)
*
* Set the cursor shape.
*
* RETURNS
* A handle to the previous cursor shape.
*/
HCURSOR WINAPI DECLSPEC_HOTPATCH SetCursor( HCURSOR hCursor /* [in] Handle of cursor to show */ )
{
struct user_thread_info *thread_info = get_user_thread_info();
HCURSOR hOldCursor;
if (hCursor == thread_info->cursor) return hCursor; /* No change */
TRACE("%p\n", hCursor);
hOldCursor = thread_info->cursor;
thread_info->cursor = hCursor;
/* Change the cursor shape only if it is visible */
if (thread_info->cursor_count >= 0)
{
CURSORICONINFO *info = get_icon_ptr( hCursor );
/* release before calling driver (FIXME) */
if (info) release_icon_ptr( hCursor, info );
USER_Driver->pSetCursor( info );
}
return hOldCursor;
}
/***********************************************************************
* ShowCursor (USER32.@)
*/
INT WINAPI DECLSPEC_HOTPATCH ShowCursor( BOOL bShow )
{
struct user_thread_info *thread_info = get_user_thread_info();
TRACE("%d, count=%d\n", bShow, thread_info->cursor_count );
if (bShow)
{
if (++thread_info->cursor_count == 0) /* Show it */
{
CURSORICONINFO *info = get_icon_ptr( thread_info->cursor );
/* release before calling driver (FIXME) */
if (info) release_icon_ptr( thread_info->cursor, info );
USER_Driver->pSetCursor( info );
}
}
else
{
if (--thread_info->cursor_count == -1) /* Hide it */
USER_Driver->pSetCursor( NULL );
}
return thread_info->cursor_count;
}
/***********************************************************************
* GetCursor (USER32.@)
*/
HCURSOR WINAPI GetCursor(void)
{
return get_user_thread_info()->cursor;
}
/***********************************************************************
* ClipCursor (USER32.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH ClipCursor( const RECT *rect )
{
RECT virt;
SetRect( &virt, 0, 0, GetSystemMetrics( SM_CXVIRTUALSCREEN ),
GetSystemMetrics( SM_CYVIRTUALSCREEN ) );
OffsetRect( &virt, GetSystemMetrics( SM_XVIRTUALSCREEN ),
GetSystemMetrics( SM_YVIRTUALSCREEN ) );
TRACE( "Clipping to: %s was: %s screen: %s\n", wine_dbgstr_rect(rect),
wine_dbgstr_rect(&CURSOR_ClipRect), wine_dbgstr_rect(&virt) );
if (!IntersectRect( &CURSOR_ClipRect, &virt, rect ))
CURSOR_ClipRect = virt;
USER_Driver->pClipCursor( rect );
return TRUE;
}
/***********************************************************************
* GetClipCursor (USER32.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH GetClipCursor( RECT *rect )
{
/* If this is first time - initialize the rect */
if (IsRectEmpty( &CURSOR_ClipRect )) ClipCursor( NULL );
return CopyRect( rect, &CURSOR_ClipRect );
}
/***********************************************************************
* SetSystemCursor (USER32.@)
*/
BOOL WINAPI SetSystemCursor(HCURSOR hcur, DWORD id)
{
FIXME("(%p,%08x),stub!\n", hcur, id);
return TRUE;
}
/**********************************************************************
* LookupIconIdFromDirectoryEx (USER32.@)
*/
INT WINAPI LookupIconIdFromDirectoryEx( LPBYTE xdir, BOOL bIcon,
INT width, INT height, UINT cFlag )
{
CURSORICONDIR *dir = (CURSORICONDIR*)xdir;
UINT retVal = 0;
if( dir && !dir->idReserved && (dir->idType & 3) )
{
CURSORICONDIRENTRY* entry;
const HDC hdc = GetDC(0);
const int depth = (cFlag & LR_MONOCHROME) ?
1 : GetDeviceCaps(hdc, BITSPIXEL);
ReleaseDC(0, hdc);
if( bIcon )
entry = CURSORICON_FindBestIconRes( dir, width, height, depth );
else
entry = CURSORICON_FindBestCursorRes( dir, width, height, depth );
if( entry ) retVal = entry->wResId;
}
else WARN_(cursor)("invalid resource directory\n");
return retVal;
}
/**********************************************************************
* LookupIconIdFromDirectory (USER32.@)
*/
INT WINAPI LookupIconIdFromDirectory( LPBYTE dir, BOOL bIcon )
{
return LookupIconIdFromDirectoryEx( dir, bIcon,
bIcon ? GetSystemMetrics(SM_CXICON) : GetSystemMetrics(SM_CXCURSOR),
bIcon ? GetSystemMetrics(SM_CYICON) : GetSystemMetrics(SM_CYCURSOR), bIcon ? 0 : LR_MONOCHROME );
}
/***********************************************************************
* LoadCursorW (USER32.@)
*/
HCURSOR WINAPI LoadCursorW(HINSTANCE hInstance, LPCWSTR name)
{
TRACE("%p, %s\n", hInstance, debugstr_w(name));
return LoadImageW( hInstance, name, IMAGE_CURSOR, 0, 0,
LR_SHARED | LR_DEFAULTSIZE );
}
/***********************************************************************
* LoadCursorA (USER32.@)
*/
HCURSOR WINAPI LoadCursorA(HINSTANCE hInstance, LPCSTR name)
{
TRACE("%p, %s\n", hInstance, debugstr_a(name));
return LoadImageA( hInstance, name, IMAGE_CURSOR, 0, 0,
LR_SHARED | LR_DEFAULTSIZE );
}
/***********************************************************************
* LoadCursorFromFileW (USER32.@)
*/
HCURSOR WINAPI LoadCursorFromFileW (LPCWSTR name)
{
TRACE("%s\n", debugstr_w(name));
return LoadImageW( 0, name, IMAGE_CURSOR, 0, 0,
LR_LOADFROMFILE | LR_DEFAULTSIZE );
}
/***********************************************************************
* LoadCursorFromFileA (USER32.@)
*/
HCURSOR WINAPI LoadCursorFromFileA (LPCSTR name)
{
TRACE("%s\n", debugstr_a(name));
return LoadImageA( 0, name, IMAGE_CURSOR, 0, 0,
LR_LOADFROMFILE | LR_DEFAULTSIZE );
}
/***********************************************************************
* LoadIconW (USER32.@)
*/
HICON WINAPI LoadIconW(HINSTANCE hInstance, LPCWSTR name)
{
TRACE("%p, %s\n", hInstance, debugstr_w(name));
return LoadImageW( hInstance, name, IMAGE_ICON, 0, 0,
LR_SHARED | LR_DEFAULTSIZE );
}
/***********************************************************************
* LoadIconA (USER32.@)
*/
HICON WINAPI LoadIconA(HINSTANCE hInstance, LPCSTR name)
{
TRACE("%p, %s\n", hInstance, debugstr_a(name));
return LoadImageA( hInstance, name, IMAGE_ICON, 0, 0,
LR_SHARED | LR_DEFAULTSIZE );
}
/**********************************************************************
* GetIconInfo (USER32.@)
*/
BOOL WINAPI GetIconInfo(HICON hIcon, PICONINFO iconinfo)
{
CURSORICONINFO *ciconinfo;
INT height;
if (!(ciconinfo = get_icon_ptr( hIcon ))) return FALSE;
TRACE("%p => %dx%d, %d bpp\n", hIcon,
ciconinfo->nWidth, ciconinfo->nHeight, ciconinfo->bBitsPerPixel);
if ( (ciconinfo->ptHotSpot.x == ICON_HOTSPOT) &&
(ciconinfo->ptHotSpot.y == ICON_HOTSPOT) )
{
iconinfo->fIcon = TRUE;
iconinfo->xHotspot = ciconinfo->nWidth / 2;
iconinfo->yHotspot = ciconinfo->nHeight / 2;
}
else
{
iconinfo->fIcon = FALSE;
iconinfo->xHotspot = ciconinfo->ptHotSpot.x;
iconinfo->yHotspot = ciconinfo->ptHotSpot.y;
}
height = ciconinfo->nHeight;
if (ciconinfo->bBitsPerPixel > 1)
{
iconinfo->hbmColor = CreateBitmap( ciconinfo->nWidth, ciconinfo->nHeight,
ciconinfo->bPlanes, ciconinfo->bBitsPerPixel,
(char *)(ciconinfo + 1)
+ ciconinfo->nHeight *
get_bitmap_width_bytes (ciconinfo->nWidth,1) );
}
else
{
iconinfo->hbmColor = 0;
height *= 2;
}
iconinfo->hbmMask = CreateBitmap ( ciconinfo->nWidth, height,
1, 1, ciconinfo + 1);
release_icon_ptr( hIcon, ciconinfo );
return TRUE;
}
/**********************************************************************
* CreateIconIndirect (USER32.@)
*/
HICON WINAPI CreateIconIndirect(PICONINFO iconinfo)
{
DIBSECTION bmpXor;
BITMAP bmpAnd;
HICON hObj;
int xor_objsize = 0, sizeXor = 0, sizeAnd, planes, bpp;
TRACE("color %p, mask %p, hotspot %ux%u, fIcon %d\n",
iconinfo->hbmColor, iconinfo->hbmMask,
iconinfo->xHotspot, iconinfo->yHotspot, iconinfo->fIcon);
if (!iconinfo->hbmMask) return 0;
planes = GetDeviceCaps( screen_dc, PLANES );
bpp = GetDeviceCaps( screen_dc, BITSPIXEL );
if (iconinfo->hbmColor)
{
xor_objsize = GetObjectW( iconinfo->hbmColor, sizeof(bmpXor), &bmpXor );
TRACE("color: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
bmpXor.dsBm.bmWidth, bmpXor.dsBm.bmHeight, bmpXor.dsBm.bmWidthBytes,
bmpXor.dsBm.bmPlanes, bmpXor.dsBm.bmBitsPixel);
/* we can use either depth 1 or screen depth for xor bitmap */
if (bmpXor.dsBm.bmPlanes == 1 && bmpXor.dsBm.bmBitsPixel == 1) planes = bpp = 1;
sizeXor = bmpXor.dsBm.bmHeight * planes * get_bitmap_width_bytes( bmpXor.dsBm.bmWidth, bpp );
}
GetObjectW( iconinfo->hbmMask, sizeof(bmpAnd), &bmpAnd );
TRACE("mask: width %d, height %d, width bytes %d, planes %u, bpp %u\n",
bmpAnd.bmWidth, bmpAnd.bmHeight, bmpAnd.bmWidthBytes,
bmpAnd.bmPlanes, bmpAnd.bmBitsPixel);
sizeAnd = bmpAnd.bmHeight * get_bitmap_width_bytes(bmpAnd.bmWidth, 1);
hObj = alloc_icon_handle( sizeof(CURSORICONINFO) + sizeXor + sizeAnd );
if (hObj)
{
CURSORICONINFO *info = get_icon_ptr( hObj );
/* If we are creating an icon, the hotspot is unused */
if (iconinfo->fIcon)
{
info->ptHotSpot.x = ICON_HOTSPOT;
info->ptHotSpot.y = ICON_HOTSPOT;
}
else
{
info->ptHotSpot.x = iconinfo->xHotspot;
info->ptHotSpot.y = iconinfo->yHotspot;
}
if (iconinfo->hbmColor)
{
info->nWidth = bmpXor.dsBm.bmWidth;
info->nHeight = bmpXor.dsBm.bmHeight;
info->nWidthBytes = bmpXor.dsBm.bmWidthBytes;
info->bPlanes = planes;
info->bBitsPerPixel = bpp;
}
else
{
info->nWidth = bmpAnd.bmWidth;
info->nHeight = bmpAnd.bmHeight / 2;
info->nWidthBytes = get_bitmap_width_bytes(bmpAnd.bmWidth, 1);
info->bPlanes = 1;
info->bBitsPerPixel = 1;
}
/* Transfer the bitmap bits to the CURSORICONINFO structure */
/* Some apps pass a color bitmap as a mask, convert it to b/w */
if (bmpAnd.bmBitsPixel == 1)
{
GetBitmapBits( iconinfo->hbmMask, sizeAnd, info + 1 );
}
else
{
HDC hdc_mem, hdc_mem2;
HBITMAP hbmp_mem_old, hbmp_mem2_old, hbmp_mono;
hdc_mem = CreateCompatibleDC( 0 );
hdc_mem2 = CreateCompatibleDC( 0 );
hbmp_mono = CreateBitmap( bmpAnd.bmWidth, bmpAnd.bmHeight, 1, 1, NULL );
hbmp_mem_old = SelectObject( hdc_mem, iconinfo->hbmMask );
hbmp_mem2_old = SelectObject( hdc_mem2, hbmp_mono );
BitBlt( hdc_mem2, 0, 0, bmpAnd.bmWidth, bmpAnd.bmHeight, hdc_mem, 0, 0, SRCCOPY );
SelectObject( hdc_mem, hbmp_mem_old );
SelectObject( hdc_mem2, hbmp_mem2_old );
DeleteDC( hdc_mem );
DeleteDC( hdc_mem2 );
GetBitmapBits( hbmp_mono, sizeAnd, info + 1 );
DeleteObject( hbmp_mono );
}
if (iconinfo->hbmColor)
{
char *dst_bits = (char*)(info + 1) + sizeAnd;
if (bmpXor.dsBm.bmPlanes == planes && bmpXor.dsBm.bmBitsPixel == bpp)
GetBitmapBits( iconinfo->hbmColor, sizeXor, dst_bits );
else
{
BITMAPINFO bminfo;
int dib_width = get_dib_width_bytes( info->nWidth, info->bBitsPerPixel );
int bitmap_width = get_bitmap_width_bytes( info->nWidth, info->bBitsPerPixel );
bminfo.bmiHeader.biSize = sizeof(bminfo);
bminfo.bmiHeader.biWidth = info->nWidth;
bminfo.bmiHeader.biHeight = info->nHeight;
bminfo.bmiHeader.biPlanes = info->bPlanes;
bminfo.bmiHeader.biBitCount = info->bBitsPerPixel;
bminfo.bmiHeader.biCompression = BI_RGB;
bminfo.bmiHeader.biSizeImage = info->nHeight * dib_width;
bminfo.bmiHeader.biXPelsPerMeter = 0;
bminfo.bmiHeader.biYPelsPerMeter = 0;
bminfo.bmiHeader.biClrUsed = 0;
bminfo.bmiHeader.biClrImportant = 0;
/* swap lines for dib sections */
if (xor_objsize == sizeof(DIBSECTION))
bminfo.bmiHeader.biHeight = -bminfo.bmiHeader.biHeight;
if (dib_width != bitmap_width) /* need to fixup alignment */
{
char *src_bits = HeapAlloc( GetProcessHeap(), 0, bminfo.bmiHeader.biSizeImage );
if (src_bits && GetDIBits( screen_dc, iconinfo->hbmColor, 0, info->nHeight,
src_bits, &bminfo, DIB_RGB_COLORS ))
{
int y;
for (y = 0; y < info->nHeight; y++)
memcpy( dst_bits + y * bitmap_width, src_bits + y * dib_width, bitmap_width );
}
HeapFree( GetProcessHeap(), 0, src_bits );
}
else
GetDIBits( screen_dc, iconinfo->hbmColor, 0, info->nHeight,
dst_bits, &bminfo, DIB_RGB_COLORS );
}
}
release_icon_ptr( hObj, info );
}
return hObj;
}
/******************************************************************************
* DrawIconEx (USER32.@) Draws an icon or cursor on device context
*
* NOTES
* Why is this using SM_CXICON instead of SM_CXCURSOR?
*
* PARAMS
* hdc [I] Handle to device context
* x0 [I] X coordinate of upper left corner
* y0 [I] Y coordinate of upper left corner
* hIcon [I] Handle to icon to draw
* cxWidth [I] Width of icon
* cyWidth [I] Height of icon
* istep [I] Index of frame in animated cursor
* hbr [I] Handle to background brush
* flags [I] Icon-drawing flags
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI DrawIconEx( HDC hdc, INT x0, INT y0, HICON hIcon,
INT cxWidth, INT cyWidth, UINT istep,
HBRUSH hbr, UINT flags )
{
CURSORICONINFO *ptr;
HDC hDC_off = 0, hMemDC;
BOOL result = FALSE, DoOffscreen;
HBITMAP hB_off = 0, hOld = 0;
unsigned char *xorBitmapBits;
unsigned int xorLength;
BOOL has_alpha = FALSE;
TRACE_(icon)("(hdc=%p,pos=%d.%d,hicon=%p,extend=%d.%d,istep=%d,br=%p,flags=0x%08x)\n",
hdc,x0,y0,hIcon,cxWidth,cyWidth,istep,hbr,flags );
if (!(ptr = get_icon_ptr( hIcon ))) return FALSE;
if (!(hMemDC = CreateCompatibleDC( hdc )))
{
release_icon_ptr( hIcon, ptr );
return FALSE;
}
if (istep)
FIXME_(icon)("Ignoring istep=%d\n", istep);
if (flags & DI_NOMIRROR)
FIXME_(icon)("Ignoring flag DI_NOMIRROR\n");
xorLength = ptr->nHeight * get_bitmap_width_bytes(
ptr->nWidth, ptr->bBitsPerPixel);
xorBitmapBits = (unsigned char *)(ptr + 1) + ptr->nHeight *
get_bitmap_width_bytes(ptr->nWidth, 1);
if (flags & DI_IMAGE)
has_alpha = bitmap_has_alpha_channel(
ptr->bBitsPerPixel, xorBitmapBits, xorLength);
/* Calculate the size of the destination image. */
if (cxWidth == 0)
{
if (flags & DI_DEFAULTSIZE)
cxWidth = GetSystemMetrics (SM_CXICON);
else
cxWidth = ptr->nWidth;
}
if (cyWidth == 0)
{
if (flags & DI_DEFAULTSIZE)
cyWidth = GetSystemMetrics (SM_CYICON);
else
cyWidth = ptr->nHeight;
}
DoOffscreen = (GetObjectType( hbr ) == OBJ_BRUSH);
if (DoOffscreen) {
RECT r;
r.left = 0;
r.top = 0;
r.right = cxWidth;
r.bottom = cxWidth;
hDC_off = CreateCompatibleDC(hdc);
hB_off = CreateCompatibleBitmap(hdc, cxWidth, cyWidth);
if (hDC_off && hB_off) {
hOld = SelectObject(hDC_off, hB_off);
FillRect(hDC_off, &r, hbr);
}
}
if (hMemDC && (!DoOffscreen || (hDC_off && hB_off)))
{
HBITMAP hBitTemp;
HBITMAP hXorBits = NULL, hAndBits = NULL;
COLORREF oldFg, oldBg;
INT nStretchMode;
nStretchMode = SetStretchBltMode (hdc, STRETCH_DELETESCANS);
oldFg = SetTextColor( hdc, RGB(0,0,0) );
oldBg = SetBkColor( hdc, RGB(255,255,255) );
if (((flags & DI_MASK) && !(flags & DI_IMAGE)) ||
((flags & DI_MASK) && !has_alpha))
{
hAndBits = CreateBitmap ( ptr->nWidth, ptr->nHeight, 1, 1, ptr + 1 );
if (hAndBits)
{
hBitTemp = SelectObject( hMemDC, hAndBits );
if (DoOffscreen)
StretchBlt (hDC_off, 0, 0, cxWidth, cyWidth,
hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCAND);
else
StretchBlt (hdc, x0, y0, cxWidth, cyWidth,
hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCAND);
SelectObject( hMemDC, hBitTemp );
}
}
if (flags & DI_IMAGE)
{
BITMAPINFOHEADER bmih;
unsigned char *dibBits;
memset(&bmih, 0, sizeof(BITMAPINFOHEADER));
bmih.biSize = sizeof(BITMAPINFOHEADER);
bmih.biWidth = ptr->nWidth;
bmih.biHeight = -ptr->nHeight;
bmih.biPlanes = ptr->bPlanes;
bmih.biBitCount = ptr->bBitsPerPixel;
bmih.biCompression = BI_RGB;
hXorBits = CreateDIBSection(hdc, (BITMAPINFO*)&bmih, DIB_RGB_COLORS,
(void*)&dibBits, NULL, 0);
if (hXorBits && dibBits)
{
if(has_alpha)
{
BLENDFUNCTION pixelblend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
/* Do the alpha blending render */
premultiply_alpha_channel(dibBits, xorBitmapBits, xorLength);
hBitTemp = SelectObject( hMemDC, hXorBits );
if (DoOffscreen)
GdiAlphaBlend(hDC_off, 0, 0, cxWidth, cyWidth, hMemDC,
0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
else
GdiAlphaBlend(hdc, x0, y0, cxWidth, cyWidth, hMemDC,
0, 0, ptr->nWidth, ptr->nHeight, pixelblend);
SelectObject( hMemDC, hBitTemp );
}
else
{
memcpy(dibBits, xorBitmapBits, xorLength);
hBitTemp = SelectObject( hMemDC, hXorBits );
if (DoOffscreen)
StretchBlt (hDC_off, 0, 0, cxWidth, cyWidth,
hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCPAINT);
else
StretchBlt (hdc, x0, y0, cxWidth, cyWidth,
hMemDC, 0, 0, ptr->nWidth, ptr->nHeight, SRCPAINT);
SelectObject( hMemDC, hBitTemp );
}
DeleteObject( hXorBits );
}
}
result = TRUE;
SetTextColor( hdc, oldFg );
SetBkColor( hdc, oldBg );
if (hAndBits) DeleteObject( hAndBits );
SetStretchBltMode (hdc, nStretchMode);
if (DoOffscreen) {
BitBlt(hdc, x0, y0, cxWidth, cyWidth, hDC_off, 0, 0, SRCCOPY);
SelectObject(hDC_off, hOld);
}
}
if (hMemDC) DeleteDC( hMemDC );
if (hDC_off) DeleteDC(hDC_off);
if (hB_off) DeleteObject(hB_off);
release_icon_ptr( hIcon, ptr );
return result;
}
/***********************************************************************
* DIB_FixColorsToLoadflags
*
* Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
* are in loadflags
*/
static void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
{
int colors;
COLORREF c_W, c_S, c_F, c_L, c_C;
int incr,i;
RGBQUAD *ptr;
int bitmap_type;
LONG width;
LONG height;
WORD bpp;
DWORD compr;
if (((bitmap_type = DIB_GetBitmapInfo((BITMAPINFOHEADER*) bmi, &width, &height, &bpp, &compr)) == -1))
{
WARN_(resource)("Invalid bitmap\n");
return;
}
if (bpp > 8) return;
if (bitmap_type == 0) /* BITMAPCOREHEADER */
{
incr = 3;
colors = 1 << bpp;
}
else
{
incr = 4;
colors = bmi->bmiHeader.biClrUsed;
if (colors > 256) colors = 256;
if (!colors && (bpp <= 8)) colors = 1 << bpp;
}
c_W = GetSysColor(COLOR_WINDOW);
c_S = GetSysColor(COLOR_3DSHADOW);
c_F = GetSysColor(COLOR_3DFACE);
c_L = GetSysColor(COLOR_3DLIGHT);
if (loadflags & LR_LOADTRANSPARENT) {
switch (bpp) {
case 1: pix = pix >> 7; break;
case 4: pix = pix >> 4; break;
case 8: break;
default:
WARN_(resource)("(%d): Unsupported depth\n", bpp);
return;
}
if (pix >= colors) {
WARN_(resource)("pixel has color index greater than biClrUsed!\n");
return;
}
if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
ptr->rgbBlue = GetBValue(c_W);
ptr->rgbGreen = GetGValue(c_W);
ptr->rgbRed = GetRValue(c_W);
}
if (loadflags & LR_LOADMAP3DCOLORS)
for (i=0; i<colors; i++) {
ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
if (c_C == RGB(128, 128, 128)) {
ptr->rgbRed = GetRValue(c_S);
ptr->rgbGreen = GetGValue(c_S);
ptr->rgbBlue = GetBValue(c_S);
} else if (c_C == RGB(192, 192, 192)) {
ptr->rgbRed = GetRValue(c_F);
ptr->rgbGreen = GetGValue(c_F);
ptr->rgbBlue = GetBValue(c_F);
} else if (c_C == RGB(223, 223, 223)) {
ptr->rgbRed = GetRValue(c_L);
ptr->rgbGreen = GetGValue(c_L);
ptr->rgbBlue = GetBValue(c_L);
}
}
}
/**********************************************************************
* BITMAP_Load
*/
static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name,
INT desiredx, INT desiredy, UINT loadflags )
{
HBITMAP hbitmap = 0, orig_bm;
HRSRC hRsrc;
HGLOBAL handle;
char *ptr = NULL;
BITMAPINFO *info, *fix_info = NULL, *scaled_info = NULL;
int size;
BYTE pix;
char *bits;
LONG width, height, new_width, new_height;
WORD bpp_dummy;
DWORD compr_dummy;
INT bm_type;
HDC screen_mem_dc = NULL;
if (!(loadflags & LR_LOADFROMFILE))
{
if (!instance)
{
/* OEM bitmap: try to load the resource from user32.dll */
instance = user32_module;
}
if (!(hRsrc = FindResourceW( instance, name, (LPWSTR)RT_BITMAP ))) return 0;
if (!(handle = LoadResource( instance, hRsrc ))) return 0;
if ((info = LockResource( handle )) == NULL) return 0;
}
else
{
BITMAPFILEHEADER * bmfh;
if (!(ptr = map_fileW( name, NULL ))) return 0;
info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
bmfh = (BITMAPFILEHEADER *)ptr;
if (!( bmfh->bfType == 0x4d42 /* 'BM' */ &&
bmfh->bfReserved1 == 0 &&
bmfh->bfReserved2 == 0))
{
WARN("Invalid/unsupported bitmap format!\n");
UnmapViewOfFile( ptr );
return 0;
}
}
size = bitmap_info_size(info, DIB_RGB_COLORS);
fix_info = HeapAlloc(GetProcessHeap(), 0, size);
scaled_info = HeapAlloc(GetProcessHeap(), 0, size);
if (!fix_info || !scaled_info) goto end;
memcpy(fix_info, info, size);
pix = *((LPBYTE)info + size);
DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
memcpy(scaled_info, fix_info, size);
bm_type = DIB_GetBitmapInfo( &fix_info->bmiHeader, &width, &height,
&bpp_dummy, &compr_dummy);
if(desiredx != 0)
new_width = desiredx;
else
new_width = width;
if(desiredy != 0)
new_height = height > 0 ? desiredy : -desiredy;
else
new_height = height;
if(bm_type == 0)
{
BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)&scaled_info->bmiHeader;
core->bcWidth = new_width;
core->bcHeight = new_height;
}
else
{
scaled_info->bmiHeader.biWidth = new_width;
scaled_info->bmiHeader.biHeight = new_height;
}
if (new_height < 0) new_height = -new_height;
if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
if (!(screen_mem_dc = CreateCompatibleDC( screen_dc ))) goto end;
bits = (char *)info + size;
if (loadflags & LR_CREATEDIBSECTION)
{
scaled_info->bmiHeader.biCompression = 0; /* DIBSection can't be compressed */
hbitmap = CreateDIBSection(screen_dc, scaled_info, DIB_RGB_COLORS, NULL, 0, 0);
}
else
{
if (is_dib_monochrome(fix_info))
hbitmap = CreateBitmap(new_width, new_height, 1, 1, NULL);
else
hbitmap = CreateCompatibleBitmap(screen_dc, new_width, new_height);
}
orig_bm = SelectObject(screen_mem_dc, hbitmap);
StretchDIBits(screen_mem_dc, 0, 0, new_width, new_height, 0, 0, width, height, bits, fix_info, DIB_RGB_COLORS, SRCCOPY);
SelectObject(screen_mem_dc, orig_bm);
end:
if (screen_mem_dc) DeleteDC(screen_mem_dc);
HeapFree(GetProcessHeap(), 0, scaled_info);
HeapFree(GetProcessHeap(), 0, fix_info);
if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
return hbitmap;
}
/**********************************************************************
* LoadImageA (USER32.@)
*
* See LoadImageW.
*/
HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
INT desiredx, INT desiredy, UINT loadflags)
{
HANDLE res;
LPWSTR u_name;
if (IS_INTRESOURCE(name))
return LoadImageW(hinst, (LPCWSTR)name, type, desiredx, desiredy, loadflags);
__TRY {
DWORD len = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
u_name = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
MultiByteToWideChar( CP_ACP, 0, name, -1, u_name, len );
}
__EXCEPT_PAGE_FAULT {
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
__ENDTRY
res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
HeapFree(GetProcessHeap(), 0, u_name);
return res;
}
/******************************************************************************
* LoadImageW (USER32.@) 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 winuser.h
*/
HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
INT desiredx, INT desiredy, UINT loadflags )
{
TRACE_(resource)("(%p,%s,%d,%d,%d,0x%08x)\n",
hinst,debugstr_w(name),type,desiredx,desiredy,loadflags);
if (loadflags & LR_DEFAULTSIZE) {
if (type == IMAGE_ICON) {
if (!desiredx) desiredx = GetSystemMetrics(SM_CXICON);
if (!desiredy) desiredy = GetSystemMetrics(SM_CYICON);
} else if (type == IMAGE_CURSOR) {
if (!desiredx) desiredx = GetSystemMetrics(SM_CXCURSOR);
if (!desiredy) desiredy = GetSystemMetrics(SM_CYCURSOR);
}
}
if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
switch (type) {
case IMAGE_BITMAP:
return BITMAP_Load( hinst, name, desiredx, desiredy, loadflags );
case IMAGE_ICON:
if (!screen_dc) screen_dc = CreateDCW( DISPLAYW, NULL, NULL, NULL );
if (screen_dc)
{
return CURSORICON_Load(hinst, name, desiredx, desiredy,
GetDeviceCaps(screen_dc, BITSPIXEL),
FALSE, loadflags);
}
break;
case IMAGE_CURSOR:
return CURSORICON_Load(hinst, name, desiredx, desiredy,
1, TRUE, loadflags);
}
return 0;
}
/******************************************************************************
* CopyImage (USER32.@) 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
*
* BUGS
* Only Windows NT 4.0 supports the LR_COPYRETURNORG flag for bitmaps,
* all other versions (95/2000/XP have been tested) ignore it.
*
* NOTES
* If LR_CREATEDIBSECTION is absent, the copy will be monochrome for
* a monochrome source bitmap or if LR_MONOCHROME is present, otherwise
* the copy will have the same depth as the screen.
* The content of the image will only be copied if the bit depth of the
* original image is compatible with the bit depth of the screen, or
* if the source is a DIB section.
* The LR_MONOCHROME flag is ignored if LR_CREATEDIBSECTION is present.
*/
HANDLE WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
INT desiredy, UINT flags )
{
TRACE("hnd=%p, type=%u, desiredx=%d, desiredy=%d, flags=%x\n",
hnd, type, desiredx, desiredy, flags);
switch (type)
{
case IMAGE_BITMAP:
{
HBITMAP res = NULL;
DIBSECTION ds;
int objSize;
BITMAPINFO * bi;
objSize = GetObjectW( hnd, sizeof(ds), &ds );
if (!objSize) return 0;
if ((desiredx < 0) || (desiredy < 0)) return 0;
if (flags & LR_COPYFROMRESOURCE)
{
FIXME("The flag LR_COPYFROMRESOURCE is not implemented for bitmaps\n");
}
if (desiredx == 0) desiredx = ds.dsBm.bmWidth;
if (desiredy == 0) desiredy = ds.dsBm.bmHeight;
/* Allocate memory for a BITMAPINFOHEADER structure and a
color table. The maximum number of colors in a color table
is 256 which corresponds to a bitmap with depth 8.
Bitmaps with higher depths don't have color tables. */
bi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
if (!bi) return 0;
bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
bi->bmiHeader.biPlanes = ds.dsBm.bmPlanes;
bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
bi->bmiHeader.biCompression = BI_RGB;
if (flags & LR_CREATEDIBSECTION)
{
/* Create a DIB section. LR_MONOCHROME is ignored */
void * bits;
HDC dc = CreateCompatibleDC(NULL);
if (objSize == sizeof(DIBSECTION))
{
/* The source bitmap is a DIB.
Get its attributes to create an exact copy */
memcpy(bi, &ds.dsBmih, sizeof(BITMAPINFOHEADER));
}
/* Get the color table or the color masks */
GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
bi->bmiHeader.biWidth = desiredx;
bi->bmiHeader.biHeight = desiredy;
bi->bmiHeader.biSizeImage = 0;
res = CreateDIBSection(dc, bi, DIB_RGB_COLORS, &bits, NULL, 0);
DeleteDC(dc);
}
else
{
/* Create a device-dependent bitmap */
BOOL monochrome = (flags & LR_MONOCHROME);
if (objSize == sizeof(DIBSECTION))
{
/* The source bitmap is a DIB section.
Get its attributes */
HDC dc = CreateCompatibleDC(NULL);
bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
bi->bmiHeader.biBitCount = ds.dsBm.bmBitsPixel;
GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
DeleteDC(dc);
if (!monochrome && ds.dsBm.bmBitsPixel == 1)
{
/* Look if the colors of the DIB are black and white */
monochrome =
(bi->bmiColors[0].rgbRed == 0xff
&& bi->bmiColors[0].rgbGreen == 0xff
&& bi->bmiColors[0].rgbBlue == 0xff
&& bi->bmiColors[0].rgbReserved == 0
&& bi->bmiColors[1].rgbRed == 0
&& bi->bmiColors[1].rgbGreen == 0
&& bi->bmiColors[1].rgbBlue == 0
&& bi->bmiColors[1].rgbReserved == 0)
||
(bi->bmiColors[0].rgbRed == 0
&& bi->bmiColors[0].rgbGreen == 0
&& bi->bmiColors[0].rgbBlue == 0
&& bi->bmiColors[0].rgbReserved == 0
&& bi->bmiColors[1].rgbRed == 0xff
&& bi->bmiColors[1].rgbGreen == 0xff
&& bi->bmiColors[1].rgbBlue == 0xff
&& bi->bmiColors[1].rgbReserved == 0);
}
}
else if (!monochrome)
{
monochrome = ds.dsBm.bmBitsPixel == 1;
}
if (monochrome)
{
res = CreateBitmap(desiredx, desiredy, 1, 1, NULL);
}
else
{
HDC screenDC = GetDC(NULL);
res = CreateCompatibleBitmap(screenDC, desiredx, desiredy);
ReleaseDC(NULL, screenDC);
}
}
if (res)
{
/* Only copy the bitmap if it's a DIB section or if it's
compatible to the screen */
BOOL copyContents;
if (objSize == sizeof(DIBSECTION))
{
copyContents = TRUE;
}
else
{
HDC screenDC = GetDC(NULL);
int screen_depth = GetDeviceCaps(screenDC, BITSPIXEL);
ReleaseDC(NULL, screenDC);
copyContents = (ds.dsBm.bmBitsPixel == 1 || ds.dsBm.bmBitsPixel == screen_depth);
}
if (copyContents)
{
/* The source bitmap may already be selected in a device context,
use GetDIBits/StretchDIBits and not StretchBlt */
HDC dc;
void * bits;
dc = CreateCompatibleDC(NULL);
bi->bmiHeader.biWidth = ds.dsBm.bmWidth;
bi->bmiHeader.biHeight = ds.dsBm.bmHeight;
bi->bmiHeader.biSizeImage = 0;
bi->bmiHeader.biClrUsed = 0;
bi->bmiHeader.biClrImportant = 0;
/* Fill in biSizeImage */
GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, NULL, bi, DIB_RGB_COLORS);
bits = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bi->bmiHeader.biSizeImage);
if (bits)
{
HBITMAP oldBmp;
/* Get the image bits of the source bitmap */
GetDIBits(dc, hnd, 0, ds.dsBm.bmHeight, bits, bi, DIB_RGB_COLORS);
/* Copy it to the destination bitmap */
oldBmp = SelectObject(dc, res);
StretchDIBits(dc, 0, 0, desiredx, desiredy,
0, 0, ds.dsBm.bmWidth, ds.dsBm.bmHeight,
bits, bi, DIB_RGB_COLORS, SRCCOPY);
SelectObject(dc, oldBmp);
HeapFree(GetProcessHeap(), 0, bits);
}
DeleteDC(dc);
}
if (flags & LR_COPYDELETEORG)
{
DeleteObject(hnd);
}
}
HeapFree(GetProcessHeap(), 0, bi);
return res;
}
case IMAGE_ICON:
return CURSORICON_ExtCopy(hnd,type, desiredx, desiredy, flags);
case IMAGE_CURSOR:
/* Should call CURSORICON_ExtCopy but more testing
* needs to be done before we change this
*/
if (flags) FIXME("Flags are ignored\n");
return CopyCursor(hnd);
}
return 0;
}
/******************************************************************************
* LoadBitmapW (USER32.@) 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 LoadImageW( instance, name, IMAGE_BITMAP, 0, 0, 0 );
}
/**********************************************************************
* LoadBitmapA (USER32.@)
*
* See LoadBitmapW.
*/
HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
{
return LoadImageA( instance, name, IMAGE_BITMAP, 0, 0, 0 );
}