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Sweden-Number/graphics/enhmetafiledrv/init.c

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C
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/*
* Enhanced MetaFile driver initialisation functions
*
* Copyright 1999 Huw D M Davies
*/
#include "windef.h"
#include "wingdi.h"
#include "dc.h"
#include "heap.h"
#include "global.h"
#include "enhmetafile.h"
#include "enhmetafiledrv.h"
#include "wine/winestring.h"
#include "debugtools.h"
#include <string.h>
DEFAULT_DEBUG_CHANNEL(enhmetafile)
static const DC_FUNCTIONS EMFDRV_Funcs =
{
NULL, /* pAbortDoc */
EMFDRV_Arc, /* pArc */
NULL, /* pBitBlt */
NULL, /* pBitmapBits */
EMFDRV_Chord, /* pChord */
NULL, /* pCreateBitmap */
NULL, /* no implementation */ /* pCreateDC */
NULL, /* pCreateDIBSection */
NULL, /* pCreateDIBSection16 */
NULL, /* no implementation */ /* pDeleteDC */
NULL, /* pDeleteObject */
NULL, /* pDeviceCapabilities */
EMFDRV_Ellipse, /* pEllipse */
NULL, /* pEndDoc */
NULL, /* pEndPage */
NULL, /* pEnumDeviceFonts */
NULL, /* pEscape */
EMFDRV_ExcludeClipRect, /* pExcludeClipRect */
NULL, /* pExtDeviceMode */
EMFDRV_ExtFloodFill, /* pExtFloodFill */
NULL, /* pExtTextOut */
EMFDRV_FillRgn, /* pFillRgn */
EMFDRV_FrameRgn, /* pFrameRgn */
NULL, /* pGetCharWidth */
NULL, /* no implementation */ /* pGetPixel */
NULL, /* pGetTextExtentPoint */
NULL, /* pGetTextMetrics */
EMFDRV_IntersectClipRect, /* pIntersectClipRect */
EMFDRV_InvertRgn, /* pInvertRgn */
EMFDRV_LineTo, /* pLineTo */
NULL, /* pLoadOEMResource */
EMFDRV_MoveToEx, /* pMoveToEx */
EMFDRV_OffsetClipRgn, /* pOffsetClipRgn */
NULL, /* pOffsetViewportOrg */
NULL, /* pOffsetWindowOrg */
EMFDRV_PaintRgn, /* pPaintRgn */
NULL, /* pPatBlt */
EMFDRV_Pie, /* pPie */
EMFDRV_PolyPolygon, /* pPolyPolygon */
EMFDRV_PolyPolyline, /* pPolyPolyline */
EMFDRV_Polygon, /* pPolygon */
EMFDRV_Polyline, /* pPolyline */
NULL, /* pPolyBezier */
NULL, /* pRealizePalette */
EMFDRV_Rectangle, /* pRectangle */
EMFDRV_RestoreDC, /* pRestoreDC */
EMFDRV_RoundRect, /* pRoundRect */
EMFDRV_SaveDC, /* pSaveDC */
EMFDRV_ScaleViewportExt, /* pScaleViewportExt */
EMFDRV_ScaleWindowExt, /* pScaleWindowExt */
NULL, /* pSelectClipRgn */
EMFDRV_SelectObject, /* pSelectObject */
NULL, /* pSelectPalette */
EMFDRV_SetBkColor, /* pSetBkColor */
EMFDRV_SetBkMode, /* pSetBkMode */
NULL, /* pSetDeviceClipping */
NULL, /* pSetDIBitsToDevice */
EMFDRV_SetMapMode, /* pSetMapMode */
EMFDRV_SetMapperFlags, /* pSetMapperFlags */
NULL, /* pSetPixel */
EMFDRV_SetPolyFillMode, /* pSetPolyFillMode */
EMFDRV_SetROP2, /* pSetROP2 */
NULL, /* pSetRelAbs */
EMFDRV_SetStretchBltMode, /* pSetStretchBltMode */
EMFDRV_SetTextAlign, /* pSetTextAlign */
NULL, /* pSetTextCharacterExtra */
EMFDRV_SetTextColor, /* pSetTextColor */
NULL, /* pSetTextJustification */
EMFDRV_SetViewportExt, /* pSetViewportExt */
EMFDRV_SetViewportOrg, /* pSetViewportOrg */
EMFDRV_SetWindowExt, /* pSetWindowExt */
EMFDRV_SetWindowOrg, /* pSetWindowOrg */
NULL, /* pStartDoc */
NULL, /* pStartPage */
NULL, /* pStretchBlt */
NULL /* pStretchDIBits */
};
/**********************************************************************
* EMFDRV_DeleteDC
*/
static BOOL EMFDRV_DeleteDC( DC *dc )
{
EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dc->physDev;
if (physDev->emh) HeapFree( SystemHeap, 0, physDev->emh );
HeapFree( SystemHeap, 0, physDev );
dc->physDev = NULL;
GDI_FreeObject(dc->hSelf);
return TRUE;
}
/******************************************************************
* EMFDRV_WriteRecord
*
* Warning: this function can change the pointer to the metafile header.
*/
BOOL EMFDRV_WriteRecord( DC *dc, EMR *emr )
{
DWORD len;
ENHMETAHEADER *emh;
EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dc->physDev;
physDev->emh->nBytes += emr->nSize;
physDev->emh->nRecords++;
if(physDev->hFile) {
TRACE("Writing record to disk\n");
if (!WriteFile(physDev->hFile, (char *)emr, emr->nSize, NULL, NULL))
return FALSE;
} else {
len = physDev->emh->nBytes;
emh = HeapReAlloc( SystemHeap, 0, physDev->emh, len );
if (!emh) return FALSE;
physDev->emh = emh;
memcpy((CHAR *)physDev->emh + physDev->emh->nBytes - emr->nSize, emr,
emr->nSize);
}
return TRUE;
}
/******************************************************************
* EMFDRV_UpdateBBox
*/
void EMFDRV_UpdateBBox( DC *dc, RECTL *rect )
{
EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dc->physDev;
RECTL *bounds = &physDev->emh->rclBounds;
if(bounds->left > bounds->right) {/* first rect */
*bounds = *rect;
return;
}
bounds->left = MIN(bounds->left, rect->left);
bounds->top = MIN(bounds->top, rect->top);
bounds->right = MAX(bounds->right, rect->right);
bounds->bottom = MAX(bounds->bottom, rect->bottom);
return;
}
/******************************************************************
* EMFDRV_AddHandleDC
*
* Note: this function assumes that we never delete objects.
* If we do someday, we'll need to maintain a table to re-use deleted
* handles.
*/
int EMFDRV_AddHandleDC( DC *dc )
{
EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dc->physDev;
physDev->emh->nHandles++;
return physDev->nextHandle++;
}
/**********************************************************************
* CreateEnhMetaFileA (GDI32.41)
*/
HDC WINAPI CreateEnhMetaFileA(
HDC hdc, /* optional reference DC */
LPCSTR filename, /* optional filename for disk metafiles */
const RECT *rect, /* optional bounding rectangle */
LPCSTR description /* optional description */
)
{
LPWSTR filenameW = NULL;
LPWSTR descriptionW = NULL;
HDC hReturnDC;
DWORD len1, len2;
if(filename)
filenameW = HEAP_strdupAtoW( GetProcessHeap(), 0, filename );
if(description) {
len1 = strlen(description);
len2 = strlen(description + len1 + 1);
descriptionW = HeapAlloc( GetProcessHeap(), 0, (len1 + len2 + 3) * 2);
lstrcpyAtoW(descriptionW, description );
lstrcpyAtoW(descriptionW + len1 + 1 , description + len1 + 1);
*(descriptionW + len1 + len2 + 2) = 0;
}
hReturnDC = CreateEnhMetaFileW(hdc, filenameW, rect, descriptionW);
if(filenameW)
HeapFree( GetProcessHeap(), 0, filenameW );
if(descriptionW)
HeapFree( GetProcessHeap(), 0, descriptionW );
return hReturnDC;
}
/**********************************************************************
* CreateEnhMetaFileW (GDI32.42)
*/
HDC WINAPI CreateEnhMetaFileW(
HDC hdc, /* optional reference DC */
LPCWSTR filename, /* optional filename for disk metafiles */
const RECT* rect, /* optional bounding rectangle */
LPCWSTR description /* optional description */
)
{
DC *dc;
EMFDRV_PDEVICE *physDev;
HFILE hFile;
DWORD size = 0, length = 0;
TRACE("'%s'\n", debugstr_w(filename) );
if (!(dc = DC_AllocDC( &EMFDRV_Funcs ))) return 0;
dc->header.wMagic = ENHMETAFILE_DC_MAGIC;
physDev = (EMFDRV_PDEVICE *)HeapAlloc(SystemHeap,0,sizeof(*physDev));
if (!physDev) {
GDI_HEAP_FREE( dc->hSelf );
return 0;
}
dc->physDev = physDev;
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 (!(physDev->emh = HeapAlloc( SystemHeap, HEAP_ZERO_MEMORY, size))) {
HeapFree( SystemHeap, 0, physDev );
GDI_HEAP_FREE( dc->hSelf );
return 0;
}
physDev->nextHandle = 1;
physDev->hFile = 0;
physDev->emh->iType = EMR_HEADER;
physDev->emh->nSize = size;
physDev->emh->dSignature = ENHMETA_SIGNATURE;
physDev->emh->nVersion = 0x10000;
physDev->emh->nBytes = physDev->emh->nSize;
physDev->emh->nRecords = 1;
physDev->emh->nHandles = 1;
physDev->emh->rclBounds.left = physDev->emh->rclBounds.top = 0;
physDev->emh->rclBounds.right = physDev->emh->rclBounds.bottom = -1;
physDev->emh->nDescription = length / 2;
physDev->emh->offDescription = length ? sizeof(ENHMETAHEADER) : 0;
memcpy((char *)physDev->emh + sizeof(ENHMETAHEADER), description, length);
if (filename) /* disk based metafile */
{
if ((hFile = CreateFileW(filename, GENERIC_WRITE | GENERIC_READ, 0,
NULL, CREATE_ALWAYS, 0, -1)) == HFILE_ERROR) {
EMFDRV_DeleteDC( dc );
return 0;
}
if (!WriteFile( hFile, (LPSTR)physDev->emh, size, NULL, NULL )) {
EMFDRV_DeleteDC( dc );
return 0;
}
physDev->hFile = hFile;
}
TRACE("returning %04x\n", dc->hSelf);
return dc->hSelf;
}
/******************************************************************
* CloseEnhMetaFile
*/
HENHMETAFILE WINAPI CloseEnhMetaFile( HDC hdc /* metafile DC */ )
{
HENHMETAFILE hmf;
EMFDRV_PDEVICE *physDev;
DC *dc;
EMREOF emr;
HANDLE hMapping = 0;
TRACE("(%04x)\n", hdc );
if (!(dc = (DC *) GDI_GetObjPtr( hdc, ENHMETAFILE_DC_MAGIC ))) return 0;
physDev = (EMFDRV_PDEVICE *)dc->physDev;
emr.emr.iType = EMR_EOF;
emr.emr.nSize = sizeof(emr);
emr.nPalEntries = 0;
emr.offPalEntries = 0;
emr.nSizeLast = emr.emr.nSize;
EMFDRV_WriteRecord( dc, &emr.emr );
if (physDev->hFile) /* disk based metafile */
{
if (SetFilePointer(physDev->hFile, 0, NULL, FILE_BEGIN) != 0) {
EMFDRV_DeleteDC( dc );
return 0;
}
if (!WriteFile(physDev->hFile, (LPSTR)physDev->emh,
sizeof(*physDev->emh), NULL, NULL)) {
EMFDRV_DeleteDC( dc );
return 0;
}
HeapFree( SystemHeap, 0, physDev->emh );
hMapping = CreateFileMappingA(physDev->hFile, NULL, PAGE_READONLY, 0,
0, NULL);
TRACE("hMapping = %08x\n", hMapping );
physDev->emh = MapViewOfFile(hMapping, FILE_MAP_READ, 0, 0, 0);
TRACE("view = %p\n", physDev->emh );
}
hmf = EMF_Create_HENHMETAFILE( physDev->emh, physDev->hFile, hMapping );
physDev->emh = NULL; /* So it won't be deleted */
EMFDRV_DeleteDC( dc );
return hmf;
}
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