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Sweden-Number/objects/dc.c

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/*
* GDI Device Context functions
*
* Copyright 1993 Alexandre Julliard
*
*/
#include <stdlib.h>
#include <string.h>
#include "dc.h"
#include "gdi.h"
#include "heap.h"
#include "metafile.h"
#include "color.h"
#include "debug.h"
#include "font.h"
#include "winerror.h"
#include "x11font.h"
/* 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(screen) * screenWidth / WidthOfScreen(screen);
caps->vertSize = HeightMMOfScreen(screen) * screenHeight / HeightOfScreen(screen);
caps->horzRes = screenWidth;
caps->vertRes = screenHeight;
caps->bitsPixel = screenDepth;
caps->planes = 1;
caps->numBrushes = 16+6; /* 16 solid + 6 hatched brushes */
caps->numPens = 16; /* 16 solid pens */
caps->numMarkers = 0;
caps->numFonts = 0;
caps->numColors = 100;
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_DIBTODEV | RC_BIGFONT|
RC_STRETCHBLT | RC_STRETCHDIB | RC_DEVBITS;
if( !(COLOR_GetSystemPaletteFlags() & COLOR_VIRTUAL) )
caps->rasterCaps |= RC_PALETTE;
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 = (caps->rasterCaps & RC_PALETTE)
? DefaultVisual(display,DefaultScreen(display))->map_entries
: 0;
caps->numReserved = 0;
caps->colorRes = 0;
}
/***********************************************************************
* DC_Init_DC_INFO
*
* Fill the WIN_DC_INFO structure.
*/
static void DC_Init_DC_INFO( WIN_DC_INFO *win_dc_info )
{
win_dc_info->flags = 0;
win_dc_info->devCaps = NULL;
win_dc_info->hClipRgn = 0;
win_dc_info->hVisRgn = 0;
win_dc_info->hGCClipRgn = 0;
win_dc_info->hPen = STOCK_BLACK_PEN;
win_dc_info->hBrush = STOCK_WHITE_BRUSH;
win_dc_info->hFont = STOCK_SYSTEM_FONT;
win_dc_info->hBitmap = 0;
win_dc_info->hFirstBitmap = 0;
win_dc_info->hDevice = 0;
win_dc_info->hPalette = STOCK_DEFAULT_PALETTE;
win_dc_info->ROPmode = R2_COPYPEN;
win_dc_info->polyFillMode = ALTERNATE;
win_dc_info->stretchBltMode = BLACKONWHITE;
win_dc_info->relAbsMode = ABSOLUTE;
win_dc_info->backgroundMode = OPAQUE;
win_dc_info->backgroundColor = RGB( 255, 255, 255 );
win_dc_info->textColor = RGB( 0, 0, 0 );
win_dc_info->backgroundPixel = 0;
win_dc_info->textPixel = 0;
win_dc_info->brushOrgX = 0;
win_dc_info->brushOrgY = 0;
win_dc_info->textAlign = TA_LEFT | TA_TOP | TA_NOUPDATECP;
win_dc_info->charExtra = 0;
win_dc_info->breakTotalExtra = 0;
win_dc_info->breakCount = 0;
win_dc_info->breakExtra = 0;
win_dc_info->breakRem = 0;
win_dc_info->bitsPerPixel = 1;
win_dc_info->MapMode = MM_TEXT;
win_dc_info->GraphicsMode = GM_COMPATIBLE;
win_dc_info->DCOrgX = 0;
win_dc_info->DCOrgY = 0;
win_dc_info->lpfnPrint = NULL;
win_dc_info->CursPosX = 0;
win_dc_info->CursPosY = 0;
win_dc_info->ArcDirection = AD_COUNTERCLOCKWISE;
win_dc_info->xformWorld2Wnd.eM11 = 1.0f;
win_dc_info->xformWorld2Wnd.eM12 = 0.0f;
win_dc_info->xformWorld2Wnd.eM21 = 0.0f;
win_dc_info->xformWorld2Wnd.eM22 = 1.0f;
win_dc_info->xformWorld2Wnd.eDx = 0.0f;
win_dc_info->xformWorld2Wnd.eDy = 0.0f;
win_dc_info->xformWorld2Vport = win_dc_info->xformWorld2Wnd;
win_dc_info->xformVport2World = win_dc_info->xformWorld2Wnd;
win_dc_info->vport2WorldValid = TRUE;
PATH_InitGdiPath(&win_dc_info->path);
}
/***********************************************************************
* DC_AllocDC
*/
DC *DC_AllocDC( const DC_FUNCTIONS *funcs )
{
HDC16 hdc;
DC *dc;
if (!(hdc = GDI_AllocObject( sizeof(DC), DC_MAGIC ))) return NULL;
dc = (DC *) GDI_HEAP_LOCK( hdc );
dc->hSelf = hdc;
dc->funcs = funcs;
dc->physDev = NULL;
dc->saveLevel = 0;
dc->dwHookData = 0L;
dc->hookProc = NULL;
dc->wndOrgX = 0;
dc->wndOrgY = 0;
dc->wndExtX = 1;
dc->wndExtY = 1;
dc->vportOrgX = 0;
dc->vportOrgY = 0;
dc->vportExtX = 1;
dc->vportExtY = 1;
DC_Init_DC_INFO( &dc->w );
return dc;
}
/***********************************************************************
* DC_GetDCPtr
*/
DC *DC_GetDCPtr( HDC32 hdc )
{
GDIOBJHDR *ptr = (GDIOBJHDR *)GDI_HEAP_LOCK( hdc );
if (!ptr) return NULL;
if ((ptr->wMagic == DC_MAGIC) || (ptr->wMagic == METAFILE_DC_MAGIC))
return (DC *)ptr;
GDI_HEAP_UNLOCK( hdc );
return NULL;
}
/***********************************************************************
* DC_InitDC
*
* Setup device-specific DC values for a newly created DC.
*/
void DC_InitDC( DC* dc )
{
RealizeDefaultPalette( dc->hSelf );
SetTextColor32( dc->hSelf, dc->w.textColor );
SetBkColor32( dc->hSelf, dc->w.backgroundColor );
SelectObject32( dc->hSelf, dc->w.hPen );
SelectObject32( dc->hSelf, dc->w.hBrush );
SelectObject32( dc->hSelf, dc->w.hFont );
CLIPPING_UpdateGCRegion( dc );
}
/***********************************************************************
* DC_SetupGCForPatBlt
*
* Setup the GC for a PatBlt operation using current brush.
* If fMapColors is TRUE, X pixels are mapped to Windows colors.
* Return FALSE if brush is BS_NULL, TRUE otherwise.
*/
BOOL32 DC_SetupGCForPatBlt( DC * dc, GC gc, BOOL32 fMapColors )
{
XGCValues val;
unsigned long mask;
Pixmap pixmap = 0;
if (dc->u.x.brush.style == BS_NULL) return FALSE;
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...
*/
val.foreground = dc->w.backgroundPixel;
val.background = dc->w.textPixel;
}
else
{
val.foreground = dc->u.x.brush.pixel;
val.background = dc->w.backgroundPixel;
}
if (fMapColors && COLOR_PixelToPalette)
{
val.foreground = COLOR_PixelToPalette[val.foreground];
val.background = COLOR_PixelToPalette[val.background];
}
if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc);
val.function = DC_XROPfunction[dc->w.ROPmode-1];
/*
** Let's replace GXinvert by GXxor with (black xor white)
** This solves the selection color and leak problems in excel
** FIXME : Let's do that only if we work with X-pixels, not with Win-pixels
*/
if (val.function == GXinvert)
{
val.foreground = BlackPixelOfScreen(screen) ^ WhitePixelOfScreen(screen);
val.function = GXxor;
}
val.fill_style = dc->u.x.brush.fillStyle;
switch(val.fill_style)
{
case FillStippled:
case FillOpaqueStippled:
if (dc->w.backgroundMode==OPAQUE) val.fill_style = FillOpaqueStippled;
val.stipple = dc->u.x.brush.pixmap;
mask = GCStipple;
break;
case FillTiled:
if (fMapColors && COLOR_PixelToPalette)
{
register int x, y;
XImage *image;
EnterCriticalSection( &X11DRV_CritSection );
pixmap = XCreatePixmap( display, rootWindow, 8, 8, screenDepth );
image = XGetImage( display, dc->u.x.brush.pixmap, 0, 0, 8, 8,
AllPlanes, ZPixmap );
for (y = 0; y < 8; y++)
for (x = 0; x < 8; x++)
XPutPixel( image, x, y,
COLOR_PixelToPalette[XGetPixel( image, x, y)] );
XPutImage( display, pixmap, gc, image, 0, 0, 0, 0, 8, 8 );
XDestroyImage( image );
LeaveCriticalSection( &X11DRV_CritSection );
val.tile = pixmap;
}
else val.tile = dc->u.x.brush.pixmap;
mask = GCTile;
break;
default:
mask = 0;
break;
}
val.ts_x_origin = dc->w.DCOrgX + dc->w.brushOrgX;
val.ts_y_origin = dc->w.DCOrgY + dc->w.brushOrgY;
val.fill_rule = (dc->w.polyFillMode==WINDING) ? WindingRule : EvenOddRule;
TSXChangeGC( display, gc,
GCFunction | GCForeground | GCBackground | GCFillStyle |
GCFillRule | GCTileStipXOrigin | GCTileStipYOrigin | mask,
&val );
if (pixmap) TSXFreePixmap( display, pixmap );
return TRUE;
}
/***********************************************************************
* DC_SetupGCForBrush
*
* Setup dc->u.x.gc for drawing operations using current brush.
* Return FALSE if brush is BS_NULL, TRUE otherwise.
*/
BOOL32 DC_SetupGCForBrush( DC * dc )
{
return DC_SetupGCForPatBlt( dc, dc->u.x.gc, FALSE );
}
/***********************************************************************
* DC_SetupGCForPen
*
* Setup dc->u.x.gc for drawing operations using current pen.
* Return FALSE if pen is PS_NULL, TRUE otherwise.
*/
BOOL32 DC_SetupGCForPen( DC * dc )
{
XGCValues val;
if (dc->u.x.pen.style == PS_NULL) return FALSE;
if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc);
switch (dc->w.ROPmode)
{
case R2_BLACK :
val.foreground = BlackPixelOfScreen( screen );
val.function = GXcopy;
break;
case R2_WHITE :
val.foreground = WhitePixelOfScreen( screen );
val.function = GXcopy;
break;
case R2_XORPEN :
val.foreground = dc->u.x.pen.pixel;
/* It is very unlikely someone wants to XOR with 0 */
/* This fixes the rubber-drawings in paintbrush */
if (val.foreground == 0)
val.foreground = BlackPixelOfScreen( screen )
^ WhitePixelOfScreen( screen );
val.function = GXxor;
break;
default :
val.foreground = dc->u.x.pen.pixel;
val.function = DC_XROPfunction[dc->w.ROPmode-1];
}
val.background = dc->w.backgroundPixel;
val.fill_style = FillSolid;
if ((dc->u.x.pen.style!=PS_SOLID) && (dc->u.x.pen.style!=PS_INSIDEFRAME))
{
TSXSetDashes( display, dc->u.x.gc, 0,
dc->u.x.pen.dashes, dc->u.x.pen.dash_len );
val.line_style = (dc->w.backgroundMode == OPAQUE) ?
LineDoubleDash : LineOnOffDash;
}
else val.line_style = LineSolid;
val.line_width = dc->u.x.pen.width;
if (val.line_width <= 1) {
val.cap_style = CapNotLast;
} else {
switch (dc->u.x.pen.endcap)
{
case PS_ENDCAP_SQUARE:
val.cap_style = CapProjecting;
break;
case PS_ENDCAP_FLAT:
val.cap_style = CapButt;
break;
case PS_ENDCAP_ROUND:
default:
val.cap_style = CapRound;
}
}
switch (dc->u.x.pen.linejoin)
{
case PS_JOIN_BEVEL:
val.join_style = JoinBevel;
break;
case PS_JOIN_MITER:
val.join_style = JoinMiter;
break;
case PS_JOIN_ROUND:
default:
val.join_style = JoinRound;
}
TSXChangeGC( display, dc->u.x.gc,
GCFunction | GCForeground | GCBackground | GCLineWidth |
GCLineStyle | GCCapStyle | GCJoinStyle | GCFillStyle, &val );
return TRUE;
}
/***********************************************************************
* DC_SetupGCForText
*
* Setup dc->u.x.gc for text drawing operations.
* Return FALSE if the font is null, TRUE otherwise.
*/
BOOL32 DC_SetupGCForText( DC * dc )
{
XFontStruct* xfs = XFONT_GetFontStruct( dc->u.x.font );
if( xfs )
{
XGCValues val;
if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc);
val.function = GXcopy; /* Text is always GXcopy */
val.foreground = dc->w.textPixel;
val.background = dc->w.backgroundPixel;
val.fill_style = FillSolid;
val.font = xfs->fid;
TSXChangeGC( display, dc->u.x.gc,
GCFunction | GCForeground | GCBackground | GCFillStyle |
GCFont, &val );
return TRUE;
}
WARN(dc, "Physical font failure\n" );
return FALSE;
}
/***********************************************************************
* DC_InvertXform
*
* Computes the inverse of the transformation xformSrc and stores it to
* xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
* is singular.
*/
static BOOL32 DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
{
FLOAT determinant;
determinant = xformSrc->eM11*xformSrc->eM22 -
xformSrc->eM12*xformSrc->eM21;
if (determinant > -1e-12 && determinant < 1e-12)
return FALSE;
xformDest->eM11 = xformSrc->eM22 / determinant;
xformDest->eM12 = -xformSrc->eM12 / determinant;
xformDest->eM21 = -xformSrc->eM21 / determinant;
xformDest->eM22 = xformSrc->eM11 / determinant;
xformDest->eDx = -xformSrc->eDx * xformDest->eM11 -
xformSrc->eDy * xformDest->eM21;
xformDest->eDy = -xformSrc->eDx * xformDest->eM12 -
xformSrc->eDy * xformDest->eM22;
return TRUE;
}
/***********************************************************************
* DC_UpdateXforms
*
* Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
* fields of the specified DC by creating a transformation that
* represents the current mapping mode and combining it with the DC's
* world transform. This function should be called whenever the
* parameters associated with the mapping mode (window and viewport
* extents and origins) or the world transform change.
*/
void DC_UpdateXforms( DC *dc )
{
XFORM xformWnd2Vport;
FLOAT scaleX, scaleY;
/* Construct a transformation to do the window-to-viewport conversion */
scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
xformWnd2Vport.eM11 = scaleX;
xformWnd2Vport.eM12 = 0.0;
xformWnd2Vport.eM21 = 0.0;
xformWnd2Vport.eM22 = scaleY;
xformWnd2Vport.eDx = (FLOAT)dc->vportOrgX -
scaleX * (FLOAT)dc->wndOrgX;
xformWnd2Vport.eDy = (FLOAT)dc->vportOrgY -
scaleY * (FLOAT)dc->wndOrgY;
/* Combine with the world transformation */
CombineTransform( &dc->w.xformWorld2Vport, &dc->w.xformWorld2Wnd,
&xformWnd2Vport );
/* Create inverse of world-to-viewport transformation */
dc->w.vport2WorldValid = DC_InvertXform( &dc->w.xformWorld2Vport,
&dc->w.xformVport2World );
}
/***********************************************************************
* GetDCState (GDI.179)
*/
HDC16 WINAPI GetDCState( HDC16 hdc )
{
DC * newdc, * dc;
HGDIOBJ16 handle;
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
if (!(handle = GDI_AllocObject( sizeof(DC), DC_MAGIC )))
{
GDI_HEAP_UNLOCK( hdc );
return 0;
}
newdc = (DC *) GDI_HEAP_LOCK( handle );
TRACE(dc, "(%04x): returning %04x\n", hdc, handle );
memset( &newdc->u.x, 0, sizeof(newdc->u.x) );
newdc->w.flags = dc->w.flags | DC_SAVED;
newdc->w.devCaps = dc->w.devCaps;
newdc->w.hPen = dc->w.hPen;
newdc->w.hBrush = dc->w.hBrush;
newdc->w.hFont = dc->w.hFont;
newdc->w.hBitmap = dc->w.hBitmap;
newdc->w.hFirstBitmap = dc->w.hFirstBitmap;
newdc->w.hDevice = dc->w.hDevice;
newdc->w.hPalette = dc->w.hPalette;
newdc->w.bitsPerPixel = dc->w.bitsPerPixel;
newdc->w.ROPmode = dc->w.ROPmode;
newdc->w.polyFillMode = dc->w.polyFillMode;
newdc->w.stretchBltMode = dc->w.stretchBltMode;
newdc->w.relAbsMode = dc->w.relAbsMode;
newdc->w.backgroundMode = dc->w.backgroundMode;
newdc->w.backgroundColor = dc->w.backgroundColor;
newdc->w.textColor = dc->w.textColor;
newdc->w.backgroundPixel = dc->w.backgroundPixel;
newdc->w.textPixel = dc->w.textPixel;
newdc->w.brushOrgX = dc->w.brushOrgX;
newdc->w.brushOrgY = dc->w.brushOrgY;
newdc->w.textAlign = dc->w.textAlign;
newdc->w.charExtra = dc->w.charExtra;
newdc->w.breakTotalExtra = dc->w.breakTotalExtra;
newdc->w.breakCount = dc->w.breakCount;
newdc->w.breakExtra = dc->w.breakExtra;
newdc->w.breakRem = dc->w.breakRem;
newdc->w.MapMode = dc->w.MapMode;
newdc->w.GraphicsMode = dc->w.GraphicsMode;
newdc->w.DCOrgX = dc->w.DCOrgX;
newdc->w.DCOrgY = dc->w.DCOrgY;
newdc->w.CursPosX = dc->w.CursPosX;
newdc->w.CursPosY = dc->w.CursPosY;
newdc->w.ArcDirection = dc->w.ArcDirection;
newdc->w.xformWorld2Wnd = dc->w.xformWorld2Wnd;
newdc->w.xformWorld2Vport = dc->w.xformWorld2Vport;
newdc->w.xformVport2World = dc->w.xformVport2World;
newdc->w.vport2WorldValid = dc->w.vport2WorldValid;
newdc->wndOrgX = dc->wndOrgX;
newdc->wndOrgY = dc->wndOrgY;
newdc->wndExtX = dc->wndExtX;
newdc->wndExtY = dc->wndExtY;
newdc->vportOrgX = dc->vportOrgX;
newdc->vportOrgY = dc->vportOrgY;
newdc->vportExtX = dc->vportExtX;
newdc->vportExtY = dc->vportExtY;
newdc->hSelf = (HDC32)handle;
newdc->saveLevel = 0;
PATH_InitGdiPath( &newdc->w.path );
/* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
newdc->w.hGCClipRgn = newdc->w.hVisRgn = 0;
if (dc->w.hClipRgn)
{
newdc->w.hClipRgn = CreateRectRgn32( 0, 0, 0, 0 );
CombineRgn32( newdc->w.hClipRgn, dc->w.hClipRgn, 0, RGN_COPY );
}
else
newdc->w.hClipRgn = 0;
GDI_HEAP_UNLOCK( handle );
GDI_HEAP_UNLOCK( hdc );
return handle;
}
/***********************************************************************
* SetDCState (GDI.180)
*/
void WINAPI SetDCState( HDC16 hdc, HDC16 hdcs )
{
DC *dc, *dcs;
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return;
if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC )))
{
GDI_HEAP_UNLOCK( hdc );
return;
}
if (!dcs->w.flags & DC_SAVED)
{
GDI_HEAP_UNLOCK( hdc );
GDI_HEAP_UNLOCK( hdcs );
return;
}
TRACE(dc, "%04x %04x\n", hdc, hdcs );
dc->w.flags = dcs->w.flags & ~DC_SAVED;
dc->w.devCaps = dcs->w.devCaps;
dc->w.hFirstBitmap = dcs->w.hFirstBitmap;
dc->w.hDevice = dcs->w.hDevice;
dc->w.ROPmode = dcs->w.ROPmode;
dc->w.polyFillMode = dcs->w.polyFillMode;
dc->w.stretchBltMode = dcs->w.stretchBltMode;
dc->w.relAbsMode = dcs->w.relAbsMode;
dc->w.backgroundMode = dcs->w.backgroundMode;
dc->w.backgroundColor = dcs->w.backgroundColor;
dc->w.textColor = dcs->w.textColor;
dc->w.backgroundPixel = dcs->w.backgroundPixel;
dc->w.textPixel = dcs->w.textPixel;
dc->w.brushOrgX = dcs->w.brushOrgX;
dc->w.brushOrgY = dcs->w.brushOrgY;
dc->w.textAlign = dcs->w.textAlign;
dc->w.charExtra = dcs->w.charExtra;
dc->w.breakTotalExtra = dcs->w.breakTotalExtra;
dc->w.breakCount = dcs->w.breakCount;
dc->w.breakExtra = dcs->w.breakExtra;
dc->w.breakRem = dcs->w.breakRem;
dc->w.MapMode = dcs->w.MapMode;
dc->w.GraphicsMode = dcs->w.GraphicsMode;
dc->w.DCOrgX = dcs->w.DCOrgX;
dc->w.DCOrgY = dcs->w.DCOrgY;
dc->w.CursPosX = dcs->w.CursPosX;
dc->w.CursPosY = dcs->w.CursPosY;
dc->w.ArcDirection = dcs->w.ArcDirection;
dc->w.xformWorld2Wnd = dcs->w.xformWorld2Wnd;
dc->w.xformWorld2Vport = dcs->w.xformWorld2Vport;
dc->w.xformVport2World = dcs->w.xformVport2World;
dc->w.vport2WorldValid = dcs->w.vport2WorldValid;
dc->wndOrgX = dcs->wndOrgX;
dc->wndOrgY = dcs->wndOrgY;
dc->wndExtX = dcs->wndExtX;
dc->wndExtY = dcs->wndExtY;
dc->vportOrgX = dcs->vportOrgX;
dc->vportOrgY = dcs->vportOrgY;
dc->vportExtX = dcs->vportExtX;
dc->vportExtY = dcs->vportExtY;
if (!(dc->w.flags & DC_MEMORY)) dc->w.bitsPerPixel = dcs->w.bitsPerPixel;
SelectClipRgn32( hdc, dcs->w.hClipRgn );
SelectObject32( hdc, dcs->w.hBitmap );
SelectObject32( hdc, dcs->w.hBrush );
SelectObject32( hdc, dcs->w.hFont );
SelectObject32( hdc, dcs->w.hPen );
GDISelectPalette( hdc, dcs->w.hPalette, FALSE );
GDI_HEAP_UNLOCK( hdc );
GDI_HEAP_UNLOCK( hdcs );
}
/***********************************************************************
* SaveDC16 (GDI.30)
*/
INT16 WINAPI SaveDC16( HDC16 hdc )
{
return (INT16)SaveDC32( hdc );
}
/***********************************************************************
* SaveDC32 (GDI32.292)
*/
INT32 WINAPI SaveDC32( HDC32 hdc )
{
HDC32 hdcs;
DC * dc, * dcs;
INT32 ret;
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
MF_MetaParam0(dc, META_SAVEDC);
GDI_HEAP_UNLOCK( hdc );
return 1; /* ?? */
}
if (!(hdcs = GetDCState( hdc )))
{
GDI_HEAP_UNLOCK( hdc );
return 0;
}
dcs = (DC *) GDI_HEAP_LOCK( hdcs );
/* Copy path. The reason why path saving / restoring is in SaveDC/
* RestoreDC and not in GetDCState/SetDCState is that the ...DCState
* functions are only in Win16 (which doesn't have paths) and that
* SetDCState doesn't allow us to signal an error (which can happen
* when copying paths).
*/
if (!PATH_AssignGdiPath( &dcs->w.path, &dc->w.path ))
{
GDI_HEAP_UNLOCK( hdc );
GDI_HEAP_UNLOCK( hdcs );
DeleteDC32( hdcs );
return 0;
}
dcs->header.hNext = dc->header.hNext;
dc->header.hNext = hdcs;
TRACE(dc, "(%04x): returning %d\n", hdc, dc->saveLevel+1 );
ret = ++dc->saveLevel;
GDI_HEAP_UNLOCK( hdcs );
GDI_HEAP_UNLOCK( hdc );
return ret;
}
/***********************************************************************
* RestoreDC16 (GDI.39)
*/
BOOL16 WINAPI RestoreDC16( HDC16 hdc, INT16 level )
{
return RestoreDC32( hdc, level );
}
/***********************************************************************
* RestoreDC32 (GDI32.290)
*/
BOOL32 WINAPI RestoreDC32( HDC32 hdc, INT32 level )
{
DC * dc, * dcs;
BOOL32 success;
TRACE(dc, "%04x %d\n", hdc, level );
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
if (level != -1)
{
GDI_HEAP_UNLOCK( hdc );
return FALSE;
}
MF_MetaParam1(dc, META_RESTOREDC, level);
GDI_HEAP_UNLOCK( hdc );
return TRUE;
}
if (level == -1) level = dc->saveLevel;
if ((level < 1) || (level > dc->saveLevel))
{
GDI_HEAP_UNLOCK( hdc );
return FALSE;
}
success=TRUE;
while (dc->saveLevel >= level)
{
HDC16 hdcs = dc->header.hNext;
if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC )))
{
GDI_HEAP_UNLOCK( hdc );
return FALSE;
}
dc->header.hNext = dcs->header.hNext;
if (--dc->saveLevel < level)
{
SetDCState( hdc, hdcs );
if (!PATH_AssignGdiPath( &dc->w.path, &dcs->w.path ))
/* FIXME: This might not be quite right, since we're
* returning FALSE but still destroying the saved DC state */
success=FALSE;
}
DeleteDC32( hdcs );
}
GDI_HEAP_UNLOCK( hdc );
return success;
}
/***********************************************************************
* CreateDC16 (GDI.53)
*/
HDC16 WINAPI CreateDC16( LPCSTR driver, LPCSTR device, LPCSTR output,
const DEVMODE16 *initData )
{
DC * dc;
const DC_FUNCTIONS *funcs;
if (!(funcs = DRIVER_FindDriver( driver ))) return 0;
if (!(dc = DC_AllocDC( funcs ))) return 0;
dc->w.flags = 0;
TRACE(dc, "(%s %s %s): returning %04x\n",
driver, device, output, dc->hSelf );
if (dc->funcs->pCreateDC &&
!dc->funcs->pCreateDC( dc, driver, device, output, initData ))
{
WARN(dc, "creation aborted by device\n" );
GDI_HEAP_FREE( dc->hSelf );
return 0;
}
DC_InitDC( dc );
GDI_HEAP_UNLOCK( dc->hSelf );
return dc->hSelf;
}
/***********************************************************************
* CreateDC32A (GDI32.)
*/
HDC32 WINAPI CreateDC32A( LPCSTR driver, LPCSTR device, LPCSTR output,
const DEVMODE32A *initData )
{
return CreateDC16( driver, device, output, (const DEVMODE16 *)initData );
}
/***********************************************************************
* CreateDC32W (GDI32.)
*/
HDC32 WINAPI CreateDC32W( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
const DEVMODE32W *initData )
{
LPSTR driverA = HEAP_strdupWtoA( GetProcessHeap(), 0, driver );
LPSTR deviceA = HEAP_strdupWtoA( GetProcessHeap(), 0, device );
LPSTR outputA = HEAP_strdupWtoA( GetProcessHeap(), 0, output );
HDC32 res = CreateDC16( driverA, deviceA, outputA,
(const DEVMODE16 *)initData /*FIXME*/ );
HeapFree( GetProcessHeap(), 0, driverA );
HeapFree( GetProcessHeap(), 0, deviceA );
HeapFree( GetProcessHeap(), 0, outputA );
return res;
}
/***********************************************************************
* CreateIC16 (GDI.153)
*/
HDC16 WINAPI CreateIC16( LPCSTR driver, LPCSTR device, LPCSTR output,
const DEVMODE16* initData )
{
/* Nothing special yet for ICs */
return CreateDC16( driver, device, output, initData );
}
/***********************************************************************
* CreateIC32A (GDI32.49)
*/
HDC32 WINAPI CreateIC32A( LPCSTR driver, LPCSTR device, LPCSTR output,
const DEVMODE32A* initData )
{
/* Nothing special yet for ICs */
return CreateDC32A( driver, device, output, initData );
}
/***********************************************************************
* CreateIC32W (GDI32.50)
*/
HDC32 WINAPI CreateIC32W( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
const DEVMODE32W* initData )
{
/* Nothing special yet for ICs */
return CreateDC32W( driver, device, output, initData );
}
/***********************************************************************
* CreateCompatibleDC16 (GDI.52)
*/
HDC16 WINAPI CreateCompatibleDC16( HDC16 hdc )
{
return (HDC16)CreateCompatibleDC32( hdc );
}
/***********************************************************************
* CreateCompatibleDC32 (GDI32.31)
*/
HDC32 WINAPI CreateCompatibleDC32( HDC32 hdc )
{
DC *dc, *origDC;
HBITMAP32 hbitmap;
const DC_FUNCTIONS *funcs;
if ((origDC = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC ))) funcs = origDC->funcs;
else funcs = DRIVER_FindDriver( "DISPLAY" );
if (!funcs) return 0;
if (!(dc = DC_AllocDC( funcs ))) return 0;
TRACE(dc, "(%04x): returning %04x\n",
hdc, dc->hSelf );
/* Create default bitmap */
if (!(hbitmap = CreateBitmap32( 1, 1, 1, 1, NULL )))
{
GDI_HEAP_FREE( dc->hSelf );
return 0;
}
dc->w.flags = DC_MEMORY;
dc->w.bitsPerPixel = 1;
dc->w.hBitmap = hbitmap;
dc->w.hFirstBitmap = hbitmap;
if (dc->funcs->pCreateDC &&
!dc->funcs->pCreateDC( dc, NULL, NULL, NULL, NULL ))
{
WARN(dc, "creation aborted by device\n");
DeleteObject32( hbitmap );
GDI_HEAP_FREE( dc->hSelf );
return 0;
}
DC_InitDC( dc );
GDI_HEAP_UNLOCK( dc->hSelf );
return dc->hSelf;
}
/***********************************************************************
* DeleteDC16 (GDI.68)
*/
BOOL16 WINAPI DeleteDC16( HDC16 hdc )
{
return DeleteDC32( hdc );
}
/***********************************************************************
* DeleteDC32 (GDI32.67)
*/
BOOL32 WINAPI DeleteDC32( HDC32 hdc )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return FALSE;
TRACE(dc, "%04x\n", hdc );
while (dc->saveLevel)
{
DC * dcs;
HDC16 hdcs = dc->header.hNext;
if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) break;
dc->header.hNext = dcs->header.hNext;
dc->saveLevel--;
DeleteDC32( hdcs );
}
if (!(dc->w.flags & DC_SAVED))
{
SelectObject32( hdc, STOCK_BLACK_PEN );
SelectObject32( hdc, STOCK_WHITE_BRUSH );
SelectObject32( hdc, STOCK_SYSTEM_FONT );
if (dc->w.flags & DC_MEMORY) DeleteObject32( dc->w.hFirstBitmap );
if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc);
}
if (dc->w.hClipRgn) DeleteObject32( dc->w.hClipRgn );
if (dc->w.hVisRgn) DeleteObject32( dc->w.hVisRgn );
if (dc->w.hGCClipRgn) DeleteObject32( dc->w.hGCClipRgn );
PATH_DestroyGdiPath(&dc->w.path);
return GDI_FreeObject( hdc );
}
/***********************************************************************
* ResetDC16 (GDI.376)
*/
HDC16 WINAPI ResetDC16( HDC16 hdc, const DEVMODE16 *devmode )
{
FIXME(dc, "stub\n" );
return hdc;
}
/***********************************************************************
* ResetDC32A (GDI32.287)
*/
HDC32 WINAPI ResetDC32A( HDC32 hdc, const DEVMODE32A *devmode )
{
FIXME(dc, "stub\n" );
return hdc;
}
/***********************************************************************
* ResetDC32W (GDI32.288)
*/
HDC32 WINAPI ResetDC32W( HDC32 hdc, const DEVMODE32W *devmode )
{
FIXME(dc, "stub\n" );
return hdc;
}
/***********************************************************************
* GetDeviceCaps16 (GDI.80)
*/
INT16 WINAPI GetDeviceCaps16( HDC16 hdc, INT16 cap )
{
return GetDeviceCaps32( hdc, cap );
}
/***********************************************************************
* GetDeviceCaps32 (GDI32.171)
*/
INT32 WINAPI GetDeviceCaps32( HDC32 hdc, INT32 cap )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
INT32 ret;
if (!dc) return 0;
if ((cap < 0) || (cap > sizeof(DeviceCaps)-sizeof(WORD)))
{
GDI_HEAP_UNLOCK( hdc );
return 0;
}
TRACE(dc, "(%04x,%d): returning %d\n",
hdc, cap, *(WORD *)(((char *)dc->w.devCaps) + cap) );
ret = *(WORD *)(((char *)dc->w.devCaps) + cap);
GDI_HEAP_UNLOCK( hdc );
return ret;
}
/***********************************************************************
* SetBkColor16 (GDI.1)
*/
COLORREF WINAPI SetBkColor16( HDC16 hdc, COLORREF color )
{
return SetBkColor32( hdc, color );
}
/***********************************************************************
* SetBkColor32 (GDI32.305)
*/
COLORREF WINAPI SetBkColor32( HDC32 hdc, COLORREF color )
{
COLORREF oldColor;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0x80000000;
MF_MetaParam2(dc, META_SETBKCOLOR, HIWORD(color), LOWORD(color));
GDI_HEAP_UNLOCK( hdc );
return 0; /* ?? */
}
oldColor = dc->w.backgroundColor;
dc->w.backgroundColor = color;
dc->w.backgroundPixel = COLOR_ToPhysical( dc, color );
GDI_HEAP_UNLOCK( hdc );
return oldColor;
}
/***********************************************************************
* SetTextColor16 (GDI.9)
*/
COLORREF WINAPI SetTextColor16( HDC16 hdc, COLORREF color )
{
return SetTextColor32( hdc, color );
}
/***********************************************************************
* SetTextColor32 (GDI32.338)
*/
COLORREF WINAPI SetTextColor32( HDC32 hdc, COLORREF color )
{
COLORREF oldColor;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0x80000000;
MF_MetaParam2(dc, META_SETTEXTCOLOR, HIWORD(color), LOWORD(color));
GDI_HEAP_UNLOCK( hdc );
return 0; /* ?? */
}
oldColor = dc->w.textColor;
dc->w.textColor = color;
dc->w.textPixel = COLOR_ToPhysical( dc, color );
GDI_HEAP_UNLOCK( hdc );
return oldColor;
}
/***********************************************************************
* SetTextAlign16 (GDI.346)
*/
UINT16 WINAPI SetTextAlign16( HDC16 hdc, UINT16 textAlign )
{
return SetTextAlign32( hdc, textAlign );
}
/***********************************************************************
* SetTextAlign32 (GDI32.336)
*/
UINT32 WINAPI SetTextAlign32( HDC32 hdc, UINT32 textAlign )
{
UINT32 prevAlign;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
if (!(dc = (DC *)GDI_GetObjPtr( hdc, METAFILE_DC_MAGIC ))) return 0;
MF_MetaParam1( dc, META_SETTEXTALIGN, textAlign );
GDI_HEAP_UNLOCK( hdc );
return 1;
}
prevAlign = dc->w.textAlign;
dc->w.textAlign = textAlign;
GDI_HEAP_UNLOCK( hdc );
return prevAlign;
}
/***********************************************************************
* GetDCOrgEx (GDI32.168)
*/
BOOL32 WINAPI GetDCOrgEx( HDC32 hDC, LPPOINT32 lpp )
{
DC * dc;
if (!lpp) return FALSE;
if (!(dc = (DC *) GDI_GetObjPtr( hDC, DC_MAGIC ))) return FALSE;
if (!(dc->w.flags & DC_MEMORY))
{
Window root;
int w, h, border, depth;
/* FIXME: this is not correct for managed windows */
TSXGetGeometry( display, dc->u.x.drawable, &root,
&lpp->x, &lpp->y, &w, &h, &border, &depth );
}
else lpp->x = lpp->y = 0;
lpp->x += dc->w.DCOrgX; lpp->y += dc->w.DCOrgY;
GDI_HEAP_UNLOCK( hDC );
return TRUE;
}
/***********************************************************************
* GetDCOrg (GDI.79)
*/
DWORD WINAPI GetDCOrg( HDC16 hdc )
{
POINT32 pt;
if( GetDCOrgEx( hdc, &pt) )
return MAKELONG( (WORD)pt.x, (WORD)pt.y );
return 0;
}
/***********************************************************************
* SetDCOrg (GDI.117)
*/
DWORD WINAPI SetDCOrg( HDC16 hdc, INT16 x, INT16 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;
GDI_HEAP_UNLOCK( hdc );
return prevOrg;
}
/***********************************************************************
* GetGraphicsMode (GDI32.188)
*/
INT32 WINAPI GetGraphicsMode( HDC32 hdc )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return 0;
return dc->w.GraphicsMode;
}
/***********************************************************************
* SetGraphicsMode (GDI32.317)
*/
INT32 WINAPI SetGraphicsMode( HDC32 hdc, INT32 mode )
{
INT32 ret;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
/* One would think that setting the graphics mode to GM_COMPATIBLE
* would also reset the world transformation matrix to the unity
* matrix. However, in Windows, this is not the case. This doesn't
* make a lot of sense to me, but that's the way it is.
*/
if (!dc) return 0;
if ((mode <= 0) || (mode > GM_LAST)) return 0;
ret = dc->w.GraphicsMode;
dc->w.GraphicsMode = mode;
return ret;
}
/***********************************************************************
* GetArcDirection16 (GDI.524)
*/
INT16 WINAPI GetArcDirection16( HDC16 hdc )
{
return GetArcDirection32( (HDC32)hdc );
}
/***********************************************************************
* GetArcDirection32 (GDI32.141)
*/
INT32 WINAPI GetArcDirection32( HDC32 hdc )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
return 0;
return dc->w.ArcDirection;
}
/***********************************************************************
* SetArcDirection16 (GDI.525)
*/
INT16 WINAPI SetArcDirection16( HDC16 hdc, INT16 nDirection )
{
return SetArcDirection32( (HDC32)hdc, (INT32)nDirection );
}
/***********************************************************************
* SetArcDirection32 (GDI32.302)
*/
INT32 WINAPI SetArcDirection32( HDC32 hdc, INT32 nDirection )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
INT32 nOldDirection;
if (!dc)
return 0;
if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
nOldDirection = dc->w.ArcDirection;
dc->w.ArcDirection = nDirection;
return nOldDirection;
}
/***********************************************************************
* GetWorldTransform (GDI32.244)
*/
BOOL32 WINAPI GetWorldTransform( HDC32 hdc, LPXFORM xform )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
return FALSE;
if (!xform)
return FALSE;
*xform = dc->w.xformWorld2Wnd;
return TRUE;
}
/***********************************************************************
* SetWorldTransform (GDI32.346)
*/
BOOL32 WINAPI SetWorldTransform( HDC32 hdc, const XFORM *xform )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
SetLastError( ERROR_INVALID_HANDLE );
return FALSE;
}
if (!xform)
return FALSE;
/* Check that graphics mode is GM_ADVANCED */
if (dc->w.GraphicsMode!=GM_ADVANCED)
return FALSE;
dc->w.xformWorld2Wnd = *xform;
DC_UpdateXforms( dc );
return TRUE;
}
/****************************************************************************
* ModifyWorldTransform [GDI32.253]
* Modifies the world transformation for a device context.
*
* PARAMS
* hdc [I] Handle to device context
* xform [I] XFORM structure that will be used to modify the world
* transformation
* iMode [I] Specifies in what way to modify the world transformation
* Possible values:
* MWT_IDENTITY
* Resets the world transformation to the identity matrix.
* The parameter xform is ignored.
* MWT_LEFTMULTIPLY
* Multiplies xform into the world transformation matrix from
* the left.
* MWT_RIGHTMULTIPLY
* Multiplies xform into the world transformation matrix from
* the right.
*
* RETURNS STD
*/
BOOL32 WINAPI ModifyWorldTransform( HDC32 hdc, const XFORM *xform,
DWORD iMode )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
/* Check for illegal parameters */
if (!dc)
{
SetLastError( ERROR_INVALID_HANDLE );
return FALSE;
}
if (!xform)
return FALSE;
/* Check that graphics mode is GM_ADVANCED */
if (dc->w.GraphicsMode!=GM_ADVANCED)
return FALSE;
switch (iMode)
{
case MWT_IDENTITY:
dc->w.xformWorld2Wnd.eM11 = 1.0f;
dc->w.xformWorld2Wnd.eM12 = 0.0f;
dc->w.xformWorld2Wnd.eM21 = 0.0f;
dc->w.xformWorld2Wnd.eM22 = 1.0f;
dc->w.xformWorld2Wnd.eDx = 0.0f;
dc->w.xformWorld2Wnd.eDy = 0.0f;
break;
case MWT_LEFTMULTIPLY:
CombineTransform( &dc->w.xformWorld2Wnd, xform,
&dc->w.xformWorld2Wnd );
break;
case MWT_RIGHTMULTIPLY:
CombineTransform( &dc->w.xformWorld2Wnd, &dc->w.xformWorld2Wnd,
xform );
break;
default:
return FALSE;
}
DC_UpdateXforms( dc );
return TRUE;
}
/****************************************************************************
* CombineTransform [GDI32.20]
* Combines two transformation matrices.
*
* PARAMS
* xformResult [O] Stores the result of combining the two matrices
* xform1 [I] Specifies the first matrix to apply
* xform2 [I] Specifies the second matrix to apply
*
* REMARKS
* The same matrix can be passed in for more than one of the parameters.
*
* RETURNS STD
*/
BOOL32 WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
const XFORM *xform2 )
{
XFORM xformTemp;
/* Check for illegal parameters */
if (!xformResult || !xform1 || !xform2)
return FALSE;
/* Create the result in a temporary XFORM, since xformResult may be
* equal to xform1 or xform2 */
xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
xform1->eM12 * xform2->eM21;
xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
xform1->eM12 * xform2->eM22;
xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
xform1->eM22 * xform2->eM21;
xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
xform1->eM22 * xform2->eM22;
xformTemp.eDx = xform1->eDx * xform2->eM11 +
xform1->eDy * xform2->eM21 +
xform2->eDx;
xformTemp.eDy = xform1->eDx * xform2->eM12 +
xform1->eDy * xform2->eM22 +
xform2->eDy;
/* Copy the result to xformResult */
*xformResult = xformTemp;
return TRUE;
}
/***********************************************************************
* SetDCHook (GDI.190)
*/
BOOL16 WINAPI SetDCHook( HDC16 hdc, FARPROC16 hookProc, DWORD dwHookData )
{
DC *dc = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC );
TRACE(dc, "hookProc %08x, default is %08x\n",
(UINT32)hookProc, (UINT32)DCHook );
if (!dc) return FALSE;
dc->hookProc = hookProc;
dc->dwHookData = dwHookData;
GDI_HEAP_UNLOCK( hdc );
return TRUE;
}
/***********************************************************************
* GetDCHook (GDI.191)
*/
DWORD WINAPI GetDCHook( HDC16 hdc, FARPROC16 *phookProc )
{
DC *dc = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return 0;
*phookProc = dc->hookProc;
GDI_HEAP_UNLOCK( hdc );
return dc->dwHookData;
}
/***********************************************************************
* SetHookFlags (GDI.192)
*/
WORD WINAPI SetHookFlags(HDC16 hDC, WORD flags)
{
DC* dc = (DC*)GDI_GetObjPtr( hDC, DC_MAGIC );
if( dc )
{
WORD wRet = dc->w.flags & DC_DIRTY;
/* "Undocumented Windows" info is slightly confusing.
*/
TRACE(dc,"hDC %04x, flags %04x\n",hDC,flags);
if( flags & DCHF_INVALIDATEVISRGN )
dc->w.flags |= DC_DIRTY;
else if( flags & DCHF_VALIDATEVISRGN || !flags )
dc->w.flags &= ~DC_DIRTY;
GDI_HEAP_UNLOCK( hDC );
return wRet;
}
return 0;
}
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