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gdi32: Factor out emf_create helper.

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This commit is contained in:
Piotr Caban 2023-04-26 19:23:46 +02:00 committed by Alexandre Julliard
parent 16b951ccbf
commit f79c9f3568
1 changed files with 83 additions and 57 deletions
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140
dlls/gdi32/emfdc.c
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@ -2460,61 +2460,20 @@ HDC WINAPI CreateEnhMetaFileA( HDC hdc, const char *filename, const RECT *rect,
return ret;
}
/**********************************************************************
* CreateEnhMetaFileW (GDI32.@)
*/
HDC WINAPI CreateEnhMetaFileW( HDC hdc, const WCHAR *filename, const RECT *rect,
const WCHAR *description )
static void emf_reset( DC_ATTR *dc_attr, const RECT *rect )
{
HDC ret;
struct emf *emf;
DC_ATTR *dc_attr;
HANDLE file;
DWORD size = 0, length = 0;
struct emf *emf = get_dc_emf( dc_attr );
HDC hdc = dc_attr_handle( dc_attr );
TRACE( "(%p %s %s %s)\n", hdc, debugstr_w(filename), wine_dbgstr_rect(rect),
debugstr_w(description) );
if (!(ret = NtGdiCreateMetafileDC( hdc ))) return 0;
if (!(dc_attr = get_dc_attr( ret )) || !(emf = HeapAlloc( GetProcessHeap(), 0, sizeof(*emf) )))
{
DeleteDC( ret );
return 0;
}
emf->dc_attr = dc_attr;
dc_attr->emf = (UINT_PTR)emf;
if (description) /* App name\0Title\0\0 */
{
length = lstrlenW( description );
length += lstrlenW( description + length + 1 );
length += 3;
length *= 2;
}
size = sizeof(ENHMETAHEADER) + (length + 3) / 4 * 4;
if (!(emf->emh = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size)))
{
DeleteDC( ret );
return 0;
}
emf->handles = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
HANDLE_LIST_INC * sizeof(emf->handles[0]) );
emf->handles_size = HANDLE_LIST_INC;
memset( emf->handles, 0, emf->handles_size * sizeof(emf->handles[0]) );
emf->cur_handles = 1;
emf->file = 0;
if (emf->dc_brush) DeleteObject( emf->dc_brush );
emf->dc_brush = 0;
if (emf->dc_pen) DeleteObject( emf->dc_pen );
emf->dc_pen = 0;
emf->path = FALSE;
emf->palette_size = 0;
emf->palette_used = 0;
emf->palette = NULL;
emf->emh->iType = EMR_HEADER;
emf->emh->nSize = size;
dc_attr->emf_bounds.left = dc_attr->emf_bounds.top = 0;
dc_attr->emf_bounds.right = dc_attr->emf_bounds.bottom = -1;
@ -2538,28 +2497,95 @@ HDC WINAPI CreateEnhMetaFileW( HDC hdc, const WCHAR *filename, const RECT *rect,
emf->emh->nBytes = emf->emh->nSize;
emf->emh->nRecords = 1;
emf->emh->nHandles = 1;
emf->emh->sReserved = 0; /* According to docs, this is reserved and must be 0 */
emf->emh->nDescription = length / 2;
emf->emh->offDescription = length ? sizeof(ENHMETAHEADER) : 0;
emf->emh->nPalEntries = 0; /* I guess this should start at 0 */
emf->emh->nPalEntries = 0;
/* Size in pixels */
emf->emh->szlDevice.cx = GetDeviceCaps( ret, HORZRES );
emf->emh->szlDevice.cy = GetDeviceCaps( ret, VERTRES );
emf->emh->szlDevice.cx = GetDeviceCaps( hdc, HORZRES );
emf->emh->szlDevice.cy = GetDeviceCaps( hdc, VERTRES );
/* Size in millimeters */
emf->emh->szlMillimeters.cx = GetDeviceCaps( ret, HORZSIZE );
emf->emh->szlMillimeters.cy = GetDeviceCaps( ret, VERTSIZE );
emf->emh->szlMillimeters.cx = GetDeviceCaps( hdc, HORZSIZE );
emf->emh->szlMillimeters.cy = GetDeviceCaps( hdc, VERTSIZE );
emf->emh->cbPixelFormat = 0;
emf->emh->offPixelFormat = 0;
emf->emh->bOpenGL = 0;
/* Size in micrometers */
emf->emh->szlMicrometers.cx = emf->emh->szlMillimeters.cx * 1000;
emf->emh->szlMicrometers.cy = emf->emh->szlMillimeters.cy * 1000;
}
static struct emf *emf_create( HDC hdc, const RECT *rect, const WCHAR *description )
{
DWORD size = 0, length = 0;
DC_ATTR *dc_attr;
struct emf *emf;
if (!(dc_attr = get_dc_attr( hdc )) || !(emf = HeapAlloc( GetProcessHeap(), 0, sizeof(*emf) )))
return NULL;
if (description) /* App name\0Title\0\0 */
{
length = lstrlenW( description );
length += lstrlenW( description + length + 1 );
length += 3;
length *= 2;
}
size = sizeof(ENHMETAHEADER) + (length + 3) / 4 * 4;
if (!(emf->emh = HeapAlloc( GetProcessHeap(), 0, size )) ||
!(emf->handles = HeapAlloc( GetProcessHeap(), 0,
HANDLE_LIST_INC * sizeof(emf->handles[0]) )))
{
HeapFree( GetProcessHeap(), 0, emf->emh );
HeapFree( GetProcessHeap(), 0, emf );
return NULL;
}
emf->dc_attr = dc_attr;
dc_attr->emf = (UINT_PTR)emf;
emf->handles_size = HANDLE_LIST_INC;
emf->dc_brush = 0;
emf->dc_pen = 0;
emf->palette_size = 0;
emf->palette = NULL;
emf->emh->iType = EMR_HEADER;
emf->emh->nSize = size;
emf->emh->nDescription = length / 2;
emf->emh->offDescription = length ? sizeof(ENHMETAHEADER) : 0;
memcpy( (char *)emf->emh + sizeof(ENHMETAHEADER), description, length );
emf_reset( dc_attr, rect );
return emf;
}
/**********************************************************************
* CreateEnhMetaFileW (GDI32.@)
*/
HDC WINAPI CreateEnhMetaFileW( HDC hdc, const WCHAR *filename, const RECT *rect,
const WCHAR *description )
{
struct emf *emf;
HANDLE file;
HDC ret;
TRACE( "(%p %s %s %s)\n", hdc, debugstr_w(filename), wine_dbgstr_rect(rect),
debugstr_w(description) );
if (!(ret = NtGdiCreateMetafileDC( hdc ))) return 0;
emf = emf_create( ret, rect, description );
if (!emf)
{
DeleteDC( ret );
return 0;
}
if (filename) /* disk based metafile */
{
if ((file = CreateFileW( filename, GENERIC_WRITE | GENERIC_READ, 0,