/*** $Id: coor.c,v 1.7 2003/09/04 03:09:52 weiym Exp $**** Coordinates operations of GDI.**** Copyright (C) 2003 Feynman Software.** Copyright (C) 2000 ~ 2002 Wei Yongming.**** Current maintainer: Wei Yongming.**** Create date: 2000/06/12, derived from original gdi.c*//*** This program is free software; you can redistribute it and/or modify** it under the terms of the GNU General Public License as published by** the Free Software Foundation; either version 2 of the License, or** (at your option) any later version.**** This program is distributed in the hope that it will be useful,** but WITHOUT ANY WARRANTY; without even the implied warranty of** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the** GNU General Public License for more details.**** You should have received a copy of the GNU General Public License** along with this program; if not, write to the Free Software** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*//*** TODO:*/ #include "common.h"#include "minigui.h"#include "gdi.h"#include "window.h"#include "cliprect.h"#include "gal.h"#include "internals.h"#include "ctrlclass.h"#include "dc.h"/************************ Coordinate system transfer *************************/void GUIAPI SPtoLP(HDC hdc, POINT* pPt){    if (hdc == HDC_SCREEN) return;    coor_SP2LP ((PDC)hdc, &pPt->x, &pPt->y);}void GUIAPI LPtoSP(HDC hdc, POINT* pPt){    if (hdc == HDC_SCREEN) return;    coor_LP2SP ((PDC)hdc, &pPt->x, &pPt->y);}void GUIAPI LPtoDP(HDC hdc, POINT* pPt){    PDC pdc;    pdc = dc_HDC2PDC(hdc);    if (pdc->mapmode != MM_TEXT) {        pPt->x = (pPt->x - pdc->WindowOrig.x)             * pdc->ViewExtent.x / pdc->WindowExtent.x             + pdc->ViewOrig.x;        pPt->y = (pPt->y - pdc->WindowOrig.y)             * pdc->ViewExtent.y / pdc->WindowExtent.y             + pdc->ViewOrig.y;    }}void GUIAPI DPtoLP (HDC hdc, POINT* pPt){    PDC pdc;    pdc = dc_HDC2PDC (hdc);    if (pdc->mapmode != MM_TEXT) {        pPt->x = (pPt->x - pdc->ViewOrig.x)             * pdc->WindowExtent.x / pdc->ViewExtent.x             + pdc->WindowOrig.x;        pPt->y = (pPt->y - pdc->ViewOrig.y)             * pdc->WindowExtent.y / pdc->ViewExtent.y             + pdc->WindowOrig.y;    }}