/***********************************************************************
* ScaleWindowExtEx (GDI32.@)
*/
BOOL WINAPI ScaleWindowExtEx( HDC hdc, INT xNum, INT xDenom,
INT yNum, INT yDenom, LPSIZE size )
{
BOOL ret = TRUE;
DC * dc = DC_GetDCPtr( hdc );
if (!dc) return FALSE;
if (dc->funcs->pScaleWindowExt)
{
ret = dc->funcs->pScaleWindowExt( dc, xNum, xDenom, yNum, yDenom );
goto done;
}
if (size)
{
size->cx = dc->wndExtX;
size->cy = dc->wndExtY;
}
if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
goto done;
if (!xNum || !xDenom || !xNum || !yDenom)
{
ret = FALSE;
goto done;
}
dc->wndExtX = (dc->wndExtX * xNum) / xDenom;
dc->wndExtY = (dc->wndExtY * yNum) / yDenom;
if (dc->wndExtX == 0) dc->wndExtX = 1;
if (dc->wndExtY == 0) dc->wndExtY = 1;
if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
DC_UpdateXforms( dc );
done:
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* SetWindowExtEx (GDI32.@)
*/
BOOL WINAPI SetWindowExtEx( HDC hdc, INT x, INT y, LPSIZE size )
{
BOOL ret = TRUE;
DC * dc = DC_GetDCPtr( hdc );
if (!dc) return FALSE;
if (dc->funcs->pSetWindowExt)
{
ret = dc->funcs->pSetWindowExt( dc, x, y );
goto done;
}
if (size)
{
size->cx = dc->wndExtX;
size->cy = dc->wndExtY;
}
if ((dc->MapMode != MM_ISOTROPIC) && (dc->MapMode != MM_ANISOTROPIC))
goto done;
if (!x || !y)
{
ret = FALSE;
goto done;
}
dc->wndExtX = x;
dc->wndExtY = y;
if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
DC_UpdateXforms( dc );
done:
GDI_ReleaseObj( hdc );
return ret;
}
BOOL nulldrv_SetViewportExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size )
{
DC *dc = get_nulldrv_dc( dev );
if (size)
{
size->cx = dc->vportExtX;
size->cy = dc->vportExtY;
}
if (dc->MapMode != MM_ISOTROPIC && dc->MapMode != MM_ANISOTROPIC) return TRUE;
if (!cx || !cy) return FALSE;
dc->vportExtX = cx;
dc->vportExtY = cy;
if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
DC_UpdateXforms( dc );
return TRUE;
}
BOOL nulldrv_ScaleViewportExtEx( PHYSDEV dev, INT x_num, INT x_denom, INT y_num, INT y_denom, SIZE *size )
{
DC *dc = get_nulldrv_dc( dev );
if (size)
{
size->cx = dc->vportExtX;
size->cy = dc->vportExtY;
}
if (dc->MapMode != MM_ISOTROPIC && dc->MapMode != MM_ANISOTROPIC) return TRUE;
if (!x_num || !x_denom || !y_num || !y_denom) return FALSE;
dc->vportExtX = (dc->vportExtX * x_num) / x_denom;
dc->vportExtY = (dc->vportExtY * y_num) / y_denom;
if (dc->vportExtX == 0) dc->vportExtX = 1;
if (dc->vportExtY == 0) dc->vportExtY = 1;
if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
DC_UpdateXforms( dc );
return TRUE;
}
BOOL nulldrv_SetWindowExtEx( PHYSDEV dev, INT cx, INT cy, SIZE *size )
{
DC *dc = get_nulldrv_dc( dev );
if (size)
{
size->cx = dc->wndExtX;
size->cy = dc->wndExtY;
}
if (dc->MapMode != MM_ISOTROPIC && dc->MapMode != MM_ANISOTROPIC) return TRUE;
if (!cx || !cy) return FALSE;
dc->wndExtX = cx;
dc->wndExtY = cy;
/* The API docs say that you should call SetWindowExtEx before
SetViewportExtEx. This advice does not imply that Windows
doesn't ensure the isotropic mapping after SetWindowExtEx! */
if (dc->MapMode == MM_ISOTROPIC) MAPPING_FixIsotropic( dc );
DC_UpdateXforms( dc );
return TRUE;
}
