/*** $Id: icon-lite.c,v 1.16 2003/09/04 03:09:52 weiym Exp $**** icon.c Icon 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 <stdio.h>#include <stdlib.h>#include <string.h>#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"#include "icon.h"#include "cursor.h"#include "readbmp.h"extern BOOL dc_GenerateECRgn(PDC pdc, BOOL fForce);/************************* Icon support **************************************/#include "loadicon.c"void GUIAPI DrawIcon(HDC hdc, int x, int y, int w, int h, HICON hicon){    PCLIPRECT pClipRect;    PDC pdc;    PICON picon = (PICON)hicon;    int i;    int imagesize;    BYTE* iconimage;    BYTE* andbits = NULL;    BYTE* xorbits = NULL;    RECT rcOutput;    pdc = dc_HDC2PDC(hdc);    if (dc_IsGeneralHDC(hdc)) {        if (!dc_GenerateECRgn (pdc, FALSE)) {            return;        }    }    if(w <= 0) w = picon->width;    if(h <= 0) h = picon->height;    // Transfer logical to device to screen here.    w += x; h += y;    coor_LP2SP(pdc, &x, &y);    coor_LP2SP(pdc, &w, &h);    rcOutput.left = x;    rcOutput.top  = y;    rcOutput.right = w;    rcOutput.bottom = h;    NormalizeRect (&rcOutput);    w = RECTW (rcOutput); h = RECTH (rcOutput);    IntersectRect (&rcOutput, &rcOutput, &pdc->ecrgn.rcBound);    if( !dc_IsMemHDC(hdc) ) ShowCursorForGDI(FALSE, &rcOutput);    GAL_SetGC (pdc->gc);    imagesize = w * h * GAL_BytesPerPixel (pdc->gc);    if ((iconimage = malloc (imagesize)) == NULL)        goto free_ret;    if (w != picon->width || h != picon->height) {        andbits = malloc (imagesize);        xorbits = malloc (imagesize);        if (andbits == NULL || xorbits == NULL)            goto free_ret;        GAL_ScaleBox (pdc->gc, picon->width, picon->height, picon->AndBits, w, h, andbits);        GAL_ScaleBox (pdc->gc, picon->width, picon->height, picon->XorBits, w, h, xorbits);    }    else {        andbits = picon->AndBits;        xorbits = picon->XorBits;    }    GAL_GetBox (pdc->gc, x, y, w, h, iconimage);    for(i = 0; i < imagesize; i++) {        iconimage[i] &= andbits [i];        iconimage[i] ^= xorbits [i];    }    pClipRect = pdc->ecrgn.head;    while (pClipRect) {        if (DoesIntersect (&rcOutput, &pClipRect->rc)) {            GAL_SetClipping(pdc->gc, pClipRect->rc.left, pClipRect->rc.top,                    pClipRect->rc.right - 1, pClipRect->rc.bottom - 1);            GAL_PutBox(pdc->gc, x, y, w, h, iconimage);        }        pClipRect = pClipRect->next;    }free_ret:    if (!dc_IsMemHDC(hdc)) ShowCursorForGDI (TRUE, &rcOutput);    free (iconimage);    if (w != picon->width || h != picon->height) {        free (andbits);        free (xorbits);    }}