screen.c

在ｅｃｏｓ 下mingui 的移植开发

// $Id: screen.c,v 1.5 2000/11/20 05:46:45 ymwei Exp $
//
// Screen operations of GDI
//
// Copyright (C) 2000, Wei Yongming.
//
// Current maintainer: Wei Yongming.

/*
**  This library is free software; you can redistribute it and/or
**  modify it under the terms of the GNU Library General Public
**  License as published by the Free Software Foundation; either
**  version 2 of the License, or (at your option) any later version.
**
**  This library 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
**  Library General Public License for more details.
**
**  You should have received a copy of the GNU Library General Public
**  License along with this library; if not, write to the Free
**  Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
**  MA 02111-1307, USA
*/

// Create date: 2000/06/12, derived from original gdi.c
//
// Modify records:
//
//  Who             When        Where       For What                Status
//-----------------------------------------------------------------------------
//
// TODO:
// 

#include <stdio.h>
#include <stdlib.h>

#include <pthread.h>
#include <semaphore.h>

#include "common.h"
#include "gdi.h"
#include "window.h"
#include "cliprect.h"
#include "gal.h"
#include "internals.h"
#include "dc.h"

#ifndef lint
static char fileid[] = "$Id: screen.c,v 1.5 2000/11/20 05:46:45 ymwei Exp $";
#endif

extern pthread_mutex_t gdilock;
extern BOOL dc_GenerateECRgn (PDC pdc, BOOL fForce);
extern void ShowCursorForGDI (BOOL fShow, const RECT* prc);

#ifdef _MISC_SAVESCREEN
void SaveScreenBox (int x, int y, int w, int h, void* vbuf)
{
    RECT rcOutput;

    rcOutput.left = x;
    rcOutput.top  = y;
    rcOutput.right = x + w;
    rcOutput.bottom = y + h;

    pthread_mutex_lock (&gdilock);
    ShowCursorForGDI (FALSE, &rcOutput);

    GAL_SetGC (PHYSICALGC);
    GAL_GetBox (PHYSICALGC, x, y, w, h, vbuf);

    ShowCursorForGDI (TRUE, &rcOutput);
    pthread_mutex_unlock (&gdilock);
}

void* SaveCoveredScreenBox (int x, int y, int w, int h)
{
    void* vbuf;

    if (!(vbuf = malloc (w * h * BYTESPERPHYPIXEL))) {
        return NULL;
    }
    
    SaveScreenBox (x, y, w, h, vbuf);

    return vbuf;
}

BOOL GUIAPI SaveMainWindowContent (HWND hWnd, const char* filename)
{
    RECT rcScreen;
    RECT rcWin;
    BITMAP bitmap;
    int save_ret;

    SetRect (&rcScreen, 0, 0, WIDTHOFPHYGC, HEIGHTOFPHYGC);
    if (hWnd) {
        GetWindowRect (hWnd, &rcWin);
        if (!IntersectRect (&rcWin, &rcWin, &rcScreen))
            return FALSE;
    }
    else
        rcWin = rcScreen;

    bitmap.bmWidth = RECTW (rcWin);
    bitmap.bmHeight = RECTH (rcWin);

    if (bitmap.bmWidth == 0 || bitmap.bmHeight == 0) {
#ifdef _DEBUG
        fprintf (stderr, "SaveContent: Empty Rect.\n");
#endif
        return FALSE;
    }
    
    bitmap.bmBits = SaveCoveredScreenBox (rcWin.left, rcWin.top, 
                                    RECTW (rcWin), RECTH (rcWin));
    if (!bitmap.bmBits) {
#ifdef _DEBUG
        fprintf (stderr, "SaveContent: SaveBox error.\n");
#endif
        return FALSE;
    }
    
    save_ret = SaveBitmap (HDC_SCREEN, &bitmap, filename);
    free (bitmap.bmBits);
    return (save_ret == 0);
}
#endif

void PutSavedBoxOnScreen (int x, int y, int w, int h, void* vbuf)
{
    RECT rcOutput;

    rcOutput.left = x;
    rcOutput.top  = y;
    rcOutput.right = x + w;
    rcOutput.bottom = y + h;

    pthread_mutex_lock (&gdilock);
    ShowCursorForGDI (FALSE, &rcOutput);

    GAL_SetGC (PHYSICALGC);
    GAL_SetClipping (PHYSICALGC, 0, 0, WIDTHOFPHYGC - 1, HEIGHTOFPHYGC - 1);
    GAL_PutBox (PHYSICALGC, x, y, w, h, vbuf);

    ShowCursorForGDI (TRUE, &rcOutput);
    pthread_mutex_unlock (&gdilock);
}