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[win32k] Reuse existing code to support page to device space transformations, fixes 4 gdi32 mapping tests

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svn path=/trunk/; revision=44676
This commit is contained in:
Gregor Schneider 2009-12-20 18:59:10 +00:00
parent 85bc5f7dc1
commit f51abbcf0c
1 changed files with 17 additions and 12 deletions
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29
reactos/subsystems/win32/win32k/objects/coord.c
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@ -165,6 +165,21 @@ IntGdiModifyWorldTransform(
return TRUE;
}
// FIXME: Don't use floating point in the kernel!
void windowToViewPort(PDC_ATTR pdcattr, LPXFORM xformWnd2Vport)
{
FLOAT scaleX, scaleY;
scaleX = (pdcattr->szlWindowExt.cx ? (FLOAT)pdcattr->szlViewportExt.cx / (FLOAT)pdcattr->szlWindowExt.cx : 0.0f);
scaleY = (pdcattr->szlWindowExt.cy ? (FLOAT)pdcattr->szlViewportExt.cy / (FLOAT)pdcattr->szlWindowExt.cy : 0.0f);
xformWnd2Vport->eM11 = scaleX;
xformWnd2Vport->eM12 = 0.0;
xformWnd2Vport->eM21 = 0.0;
xformWnd2Vport->eM22 = scaleY;
xformWnd2Vport->eDx = (FLOAT)pdcattr->ptlViewportOrg.x - scaleX * (FLOAT)pdcattr->ptlWindowOrg.x;
xformWnd2Vport->eDy = (FLOAT)pdcattr->ptlViewportOrg.y - scaleY * (FLOAT)pdcattr->ptlWindowOrg.y;
}
// FIXME: Should be XFORML and use XFORMOBJ functions directly
BOOL
APIENTRY
@ -203,7 +218,7 @@ NtGdiGetTransform(
break;
case GdiPageSpaceToDeviceSpace:
DPRINT1("Page space -> device space is unsupported!\n");
windowToViewPort(dc->pdcattr, XForm);
break;
case GdiDeviceSpaceToWorldSpace:
@ -1078,25 +1093,15 @@ DC_InvertXform(const XFORM *xformSrc,
return TRUE;
}
// FIXME: Don't use floating point in the kernel!
VOID FASTCALL
DC_UpdateXforms(PDC dc)
{
XFORM xformWnd2Vport;
FLOAT scaleX, scaleY;
PDC_ATTR pdcattr = dc->pdcattr;
XFORM xformWorld2Vport, xformWorld2Wnd, xformVport2World;
/* Construct a transformation to do the window-to-viewport conversion */
scaleX = (pdcattr->szlWindowExt.cx ? (FLOAT)pdcattr->szlViewportExt.cx / (FLOAT)pdcattr->szlWindowExt.cx : 0.0f);
scaleY = (pdcattr->szlWindowExt.cy ? (FLOAT)pdcattr->szlViewportExt.cy / (FLOAT)pdcattr->szlWindowExt.cy : 0.0f);
xformWnd2Vport.eM11 = scaleX;
xformWnd2Vport.eM12 = 0.0;
xformWnd2Vport.eM21 = 0.0;
xformWnd2Vport.eM22 = scaleY;
xformWnd2Vport.eDx = (FLOAT)pdcattr->ptlViewportOrg.x - scaleX * (FLOAT)pdcattr->ptlWindowOrg.x;
xformWnd2Vport.eDy = (FLOAT)pdcattr->ptlViewportOrg.y - scaleY * (FLOAT)pdcattr->ptlWindowOrg.y;
windowToViewPort(pdcattr, &xformWnd2Vport);
/* Combine with the world transformation */
MatrixS2XForm(&xformWorld2Vport, &dc->dclevel.mxWorldToDevice);