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Sweden-Number/windows/dc.c

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/*
* GDI Device Context functions
*
* Copyright 1993 Alexandre Julliard
*/
static char Copyright[] = "Copyright Alexandre Julliard, 1993";
#include <stdlib.h>
#include "gdi.h"
extern HBITMAP BITMAP_hbitmapMemDC;
static DeviceCaps * displayDevCaps = NULL;
extern const WIN_DC_INFO DCVAL_defaultValues;
extern void CLIPPING_SetDeviceClipping( DC * dc ); /* in objects/clipping.c */
/* ROP code to GC function conversion */
const int DC_XROPfunction[16] =
{
GXclear, /* R2_BLACK */
GXnor, /* R2_NOTMERGEPEN */
GXandInverted, /* R2_MASKNOTPEN */
GXcopyInverted, /* R2_NOTCOPYPEN */
GXandReverse, /* R2_MASKPENNOT */
GXinvert, /* R2_NOT */
GXxor, /* R2_XORPEN */
GXnand, /* R2_NOTMASKPEN */
GXand, /* R2_MASKPEN */
GXequiv, /* R2_NOTXORPEN */
GXnoop, /* R2_NOP */
GXorInverted, /* R2_MERGENOTPEN */
GXcopy, /* R2_COPYPEN */
GXorReverse, /* R2_MERGEPENNOT */
GXor, /* R2_MERGEPEN */
GXset /* R2_WHITE */
};
/***********************************************************************
* DC_FillDevCaps
*
* Fill the device caps structure.
*/
void DC_FillDevCaps( DeviceCaps * caps )
{
caps->version = 0x300;
caps->technology = DT_RASDISPLAY;
caps->horzSize = WidthMMOfScreen( XT_screen );
caps->vertSize = HeightMMOfScreen( XT_screen );
caps->horzRes = WidthOfScreen( XT_screen );
caps->vertRes = HeightOfScreen( XT_screen );
caps->bitsPixel = DefaultDepthOfScreen( XT_screen );
caps->planes = 1;
caps->numBrushes = 0;
caps->numPens = 0;
caps->numMarkers = 0;
caps->numFonts = 0;
caps->numColors = 1 << caps->bitsPixel;
caps->pdeviceSize = 0;
caps->curveCaps = CC_CIRCLES | CC_PIE | CC_CHORD | CC_ELLIPSES |
CC_WIDE | CC_STYLED | CC_WIDESTYLED |
CC_INTERIORS | CC_ROUNDRECT;
caps->lineCaps = LC_POLYLINE | LC_MARKER | LC_POLYMARKER | LC_WIDE |
LC_STYLED | LC_WIDESTYLED | LC_INTERIORS;
caps->polygonalCaps = PC_POLYGON | PC_RECTANGLE | PC_WINDPOLYGON |
PC_SCANLINE | PC_WIDE | PC_STYLED |
PC_WIDESTYLED | PC_INTERIORS;
caps->textCaps = TC_OP_CHARACTER | TC_OP_STROKE | TC_CP_STROKE |
TC_IA_ABLE | TC_UA_ABLE | TC_SO_ABLE | TC_RA_ABLE;
caps->clipCaps = CP_REGION;
caps->rasterCaps = RC_BITBLT | RC_BANDING | RC_SCALING | RC_BITMAP64 |
RC_DI_BITMAP | RC_PALETTE | RC_DIBTODEV | RC_BIGFONT|
RC_STRETCHBLT | RC_STRETCHDIB | RC_DEVBITS;
caps->aspectX = 36; /* ?? */
caps->aspectY = 36; /* ?? */
caps->aspectXY = 51;
caps->logPixelsX = (int)(caps->horzRes * 25.4 / caps->horzSize);
caps->logPixelsY = (int)(caps->vertRes * 25.4 / caps->vertSize);
caps->sizePalette = DefaultVisual( XT_display, DefaultScreen(XT_display) )->map_entries;
caps->numReserved = 0;
caps->colorRes = 0;
}
/***********************************************************************
* DC_SetDeviceInfo
*
* Set device-specific info from device-independent info.
*/
void DC_SetDeviceInfo( HDC hdc, DC * dc )
{
SetTextColor( hdc, dc->w.textColor );
SetBkColor( hdc, dc->w.backgroundColor );
SetROP2( hdc, dc->w.ROPmode );
SelectObject( hdc, dc->w.hPen );
SelectObject( hdc, dc->w.hBrush );
SelectObject( hdc, dc->w.hFont );
XSetGraphicsExposures( XT_display, dc->u.x.gc, False );
CLIPPING_SetDeviceClipping( dc );
}
/***********************************************************************
* DC_SetupDCForBrush
*
* Setup dc->u.x.gc for drawing operations using current brush.
* Return 0 if brush is BS_NULL, 1 otherwise.
*/
int DC_SetupGCForBrush( DC * dc )
{
if (dc->u.x.brush.style == BS_NULL) return 0;
if (dc->u.x.brush.pixel == -1)
{
/* Special case used for monochrome pattern brushes.
* We need to swap foreground and background because
* Windows does it the wrong way...
*/
XSetForeground( XT_display, dc->u.x.gc, dc->w.backgroundPixel );
XSetBackground( XT_display, dc->u.x.gc, dc->w.textPixel );
}
else
{
XSetForeground( XT_display, dc->u.x.gc, dc->u.x.brush.pixel );
XSetBackground( XT_display, dc->u.x.gc, dc->w.backgroundPixel );
}
if (dc->u.x.brush.fillStyle != FillStippled)
XSetFillStyle( XT_display, dc->u.x.gc, dc->u.x.brush.fillStyle );
else
XSetFillStyle( XT_display, dc->u.x.gc,
(dc->w.backgroundMode == OPAQUE) ?
FillOpaqueStippled : FillStippled );
XSetTSOrigin( XT_display, dc->u.x.gc, dc->w.DCOrgX + dc->w.brushOrgX,
dc->w.DCOrgY + dc->w.brushOrgY );
XSetFunction( XT_display, dc->u.x.gc, DC_XROPfunction[dc->w.ROPmode-1] );
XSetFillRule( XT_display, dc->u.x.gc,
(dc->w.polyFillMode == WINDING) ? WindingRule : EvenOddRule );
return 1;
}
/***********************************************************************
* DC_SetupDCForPen
*
* Setup dc->u.x.gc for drawing operations using current pen.
* Return 0 if pen is PS_NULL, 1 otherwise.
*/
int DC_SetupGCForPen( DC * dc )
{
if (dc->u.x.pen.style == PS_NULL) return 0;
XSetForeground( XT_display, dc->u.x.gc, dc->u.x.pen.pixel );
XSetBackground( XT_display, dc->u.x.gc, dc->w.backgroundPixel );
XSetFillStyle( XT_display, dc->u.x.gc, FillSolid );
if ((dc->u.x.pen.style == PS_SOLID) ||
(dc->u.x.pen.style == PS_INSIDEFRAME))
{
XSetLineAttributes( XT_display, dc->u.x.gc, dc->u.x.pen.width,
LineSolid, CapRound, JoinBevel );
}
else
{
XSetLineAttributes( XT_display, dc->u.x.gc, dc->u.x.pen.width,
(dc->w.backgroundMode == OPAQUE) ? LineDoubleDash : LineOnOffDash,
CapRound, JoinBevel );
}
XSetFunction( XT_display, dc->u.x.gc, DC_XROPfunction[dc->w.ROPmode-1] );
return 1;
}
/***********************************************************************
* DC_SetupDCForText
*
* Setup dc->u.x.gc for text drawing operations.
* Return 0 if the font is null, 1 otherwise.
*/
int DC_SetupGCForText( DC * dc )
{
XSetForeground( XT_display, dc->u.x.gc, dc->w.textPixel );
XSetBackground( XT_display, dc->u.x.gc, dc->w.backgroundPixel );
XSetFillStyle( XT_display, dc->u.x.gc, FillSolid );
XSetFunction( XT_display, dc->u.x.gc, DC_XROPfunction[dc->w.ROPmode-1] );
if (!dc->u.x.font.fstruct) return 0;
XSetFont( XT_display, dc->u.x.gc, dc->u.x.font.fstruct->fid );
return 1;
}
/***********************************************************************
* GetDCState (GDI.179)
*/
HDC GetDCState( HDC hdc )
{
DC * newdc, * dc;
HANDLE handle;
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
if (!(handle = GDI_AllocObject( sizeof(DC), DC_MAGIC ))) return 0;
newdc = (DC *) GDI_HEAP_ADDR( handle );
#ifdef DEBUG_DC
printf( "GetDCState(%d): returning %d\n", hdc, handle );
#endif
memcpy( &newdc->w, &dc->w, sizeof(dc->w) );
newdc->saveLevel = 0;
newdc->w.flags |= DC_SAVED;
if (dc->w.hClipRgn)
{
newdc->w.hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
CombineRgn( newdc->w.hClipRgn, dc->w.hClipRgn, 0, RGN_COPY );
}
if (dc->w.hVisRgn)
{
newdc->w.hVisRgn = CreateRectRgn( 0, 0, 0, 0 );
CombineRgn( newdc->w.hVisRgn, dc->w.hVisRgn, 0, RGN_COPY );
}
newdc->w.hGCClipRgn = 0;
return handle;
}
/***********************************************************************
* SetDCState (GDI.180)
*/
void SetDCState( HDC hdc, HDC hdcs )
{
DC * dc, * dcs;
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return;
if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) return;
if (!dcs->w.flags & DC_SAVED) return;
#ifdef DEBUG_DC
printf( "SetDCState: %d %d\n", hdc, hdcs );
#endif
if (dc->w.hClipRgn) DeleteObject( dc->w.hClipRgn );
if (dc->w.hVisRgn) DeleteObject( dc->w.hVisRgn );
if (dc->w.hGCClipRgn) DeleteObject( dc->w.hGCClipRgn );
memcpy( &dc->w, &dcs->w, sizeof(dc->w) );
dc->w.hClipRgn = dc->w.hVisRgn = dc->w.hGCClipRgn = 0;
dc->w.flags &= ~DC_SAVED;
DC_SetDeviceInfo( hdc, dc );
SelectClipRgn( hdc, dcs->w.hClipRgn );
SelectVisRgn( hdc, dcs->w.hVisRgn );
}
/***********************************************************************
* SaveDC (GDI.30)
*/
int SaveDC( HDC hdc )
{
HDC hdcs;
DC * dc, * dcs;
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
if (!(hdcs = GetDCState( hdc ))) return 0;
dcs = (DC *) GDI_HEAP_ADDR( hdcs );
dcs->header.hNext = dc->header.hNext;
dc->header.hNext = hdcs;
#ifdef DEBUG_DC
printf( "SaveDC(%d): returning %d\n", hdc, dc->saveLevel+1 );
#endif
return ++dc->saveLevel;
}
/***********************************************************************
* RestoreDC (GDI.39)
*/
BOOL RestoreDC( HDC hdc, short level )
{
DC * dc, * dcs;
#ifdef DEBUG_DC
printf( "RestoreDC: %d %d\n", hdc, level );
#endif
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return FALSE;
if (level == -1) level = dc->saveLevel;
if ((level < 1) || (level > dc->saveLevel)) return FALSE;
while (dc->saveLevel >= level)
{
HDC hdcs = dc->header.hNext;
if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) return FALSE;
dc->header.hNext = dcs->header.hNext;
if (--dc->saveLevel < level) SetDCState( hdc, hdcs );
DeleteDC( hdcs );
}
return TRUE;
}
/***********************************************************************
* CreateDC (GDI.53)
*/
HDC CreateDC( LPSTR driver, LPSTR device, LPSTR output, LPSTR initData )
{
DC * dc;
HANDLE handle;
handle = GDI_AllocObject( sizeof(DC), DC_MAGIC );
if (!handle) return 0;
dc = (DC *) GDI_HEAP_ADDR( handle );
#ifdef DEBUG_DC
printf( "CreateDC(%s %s %s): returning %d\n", driver, device, output, handle );
#endif
if (!displayDevCaps)
{
displayDevCaps = (DeviceCaps *) malloc( sizeof(DeviceCaps) );
DC_FillDevCaps( displayDevCaps );
}
dc->saveLevel = 0;
memcpy( &dc->w, &DCVAL_defaultValues, sizeof(DCVAL_defaultValues) );
memset( &dc->u.x, 0, sizeof(dc->u.x) );
dc->u.x.drawable = DefaultRootWindow( XT_display );
dc->u.x.gc = XCreateGC( XT_display, dc->u.x.drawable, 0, NULL );
dc->w.flags = 0;
dc->w.devCaps = displayDevCaps;
dc->w.planes = displayDevCaps->planes;
dc->w.bitsPerPixel = displayDevCaps->bitsPixel;
dc->w.DCSizeX = displayDevCaps->horzRes;
dc->w.DCSizeY = displayDevCaps->vertRes;
DC_SetDeviceInfo( handle, dc );
return handle;
}
/***********************************************************************
* CreateCompatibleDC (GDI.52)
*/
HDC CreateCompatibleDC( HDC hdc )
{
DC * dc;
HANDLE handle;
handle = GDI_AllocObject( sizeof(DC), DC_MAGIC );
if (!handle) return 0;
dc = (DC *) GDI_HEAP_ADDR( handle );
#ifdef DEBUG_DC
printf( "CreateCompatibleDC(%d): returning %d\n", hdc, handle );
#endif
dc->saveLevel = 0;
memcpy( &dc->w, &DCVAL_defaultValues, sizeof(DCVAL_defaultValues) );
memset( &dc->u.x, 0, sizeof(dc->u.x) );
dc->u.x.drawable = XCreatePixmap( XT_display,
DefaultRootWindow( XT_display ),
1, 1, 1 );
dc->u.x.gc = XCreateGC( XT_display, dc->u.x.drawable, 0, NULL );
dc->w.flags = DC_MEMORY;
dc->w.planes = 1;
dc->w.bitsPerPixel = 1;
dc->w.devCaps = displayDevCaps;
dc->w.DCSizeX = 1;
dc->w.DCSizeY = 1;
SelectObject( handle, BITMAP_hbitmapMemDC );
DC_SetDeviceInfo( handle, dc );
return handle;
}
/***********************************************************************
* DeleteDC (GDI.68)
*/
BOOL DeleteDC( HDC hdc )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return FALSE;
#ifdef DEBUG_DC
printf( "DeleteDC: %d\n", hdc );
#endif
while (dc->saveLevel)
{
DC * dcs;
HDC hdcs = dc->header.hNext;
if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) break;
dc->header.hNext = dcs->header.hNext;
dc->saveLevel--;
DeleteDC( hdcs );
}
if (!(dc->w.flags & DC_SAVED))
{
SelectObject( hdc, STOCK_BLACK_PEN );
SelectObject( hdc, STOCK_WHITE_BRUSH );
SelectObject( hdc, STOCK_SYSTEM_FONT );
XFreeGC( XT_display, dc->u.x.gc );
if (dc->w.flags & DC_MEMORY) BITMAP_UnselectBitmap( dc );
}
if (dc->w.hClipRgn) DeleteObject( dc->w.hClipRgn );
if (dc->w.hVisRgn) DeleteObject( dc->w.hVisRgn );
if (dc->w.hGCClipRgn) DeleteObject( dc->w.hGCClipRgn );
return GDI_FreeObject( hdc );
}
/***********************************************************************
* GetDeviceCaps (GDI.80)
*/
int GetDeviceCaps( HDC hdc, WORD cap )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return 0;
if (cap > sizeof(DeviceCaps)-sizeof(WORD)) return 0;
#ifdef DEBUG_DC
printf( "GetDeviceCaps(%d,%d): returning %d\n",
hdc, cap, *(WORD *)(((char *)dc->w.devCaps) + cap) );
#endif
return *(WORD *)(((char *)dc->w.devCaps) + cap);
}
/***********************************************************************
* SetBkColor (GDI.1)
*/
COLORREF SetBkColor( HDC hdc, COLORREF color )
{
COLORREF oldColor;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return 0x80000000;
oldColor = dc->w.backgroundColor;
dc->w.backgroundColor = color;
dc->w.backgroundPixel = GetNearestPaletteIndex( dc->w.hPalette, color );
XSetBackground( XT_display, dc->u.x.gc, dc->w.backgroundPixel );
return oldColor;
}
/***********************************************************************
* SetTextColor (GDI.9)
*/
COLORREF SetTextColor( HDC hdc, COLORREF color )
{
COLORREF oldColor;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return 0x80000000;
oldColor = dc->w.textColor;
dc->w.textColor = color;
dc->w.textPixel = GetNearestPaletteIndex( dc->w.hPalette, color );
XSetForeground( XT_display, dc->u.x.gc, dc->w.textPixel );
return oldColor;
}
/***********************************************************************
* SetDCOrg (GDI.117)
*/
DWORD SetDCOrg( HDC hdc, short x, short y )
{
DWORD prevOrg;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return 0;
prevOrg = dc->w.DCOrgX | (dc->w.DCOrgY << 16);
dc->w.DCOrgX = x;
dc->w.DCOrgY = y;
return prevOrg;
}
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