/*

    File:       CopyMask.c

    Contains:   Shows how CopyMask can used to fade a screen to a lighter color.    

    Written by: JW

    Copyright:  Copyright © 1999 by Apple Computer, Inc., All Rights Reserved.

    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.

                ("Apple") in consideration of your agreement to the following terms, and your

                use, installation, modification or redistribution of this Apple software

                constitutes acceptance of these terms.  If you do not agree with these terms,

                please do not use, install, modify or redistribute this Apple software.

                In consideration of your agreement to abide by the following terms, and subject

                to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs

                copyrights in this original Apple software (the "Apple Software"), to use,

                reproduce, modify and redistribute the Apple Software, with or without

                modifications, in source and/or binary forms; provided that if you redistribute

                the Apple Software in its entirety and without modifications, you must retain

                this notice and the following text and disclaimers in all such redistributions of

                the Apple Software.  Neither the name, trademarks, service marks or logos of

                Apple Computer, Inc. may be used to endorse or promote products derived from the

                Apple Software without specific prior written permission from Apple.  Except as

                expressly stated in this notice, no other rights or licenses, express or implied,

                are granted by Apple herein, including but not limited to any patent rights that

                may be infringed by your derivative works or by other works in which the Apple

                Software may be incorporated.

                The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO

                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

                WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR

                PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN

                COMBINATION WITH YOUR PRODUCTS.

                IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

                CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

                GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

                ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION

                OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT

                (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN

                ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    Change History (most recent first):

        6/2003      MK              Updated for ProjectBuilder

        08/2000     JM              Carbonized, non-Carbon code is commented out

                                    for demonstration purposes.

        7/9/1999    KG              Updated for Metrowerks Codewarror Pro 2.1

*/

#include    "CarbonPrefix.h"

int main()

{

    WindowPtr       mainWinPtr;

    OSErr           error;

    //SysEnvRec     theWorld;   //not available in carbon

    long            result;     //used in carbonization

    GWorldPtr       myOffscreen1, myOffscreen2;

    GDHandle        oldDevice;

    CGrafPtr        oldPort;

    Rect            windRect, offRect, myRect;

    RGBColor        theColor;

    int             i;

    RgnHandle       rgnHandle = NewRgn();

    /* Make sure ColorQD exists. */

    /*error = SysEnvirons(1, &theWorld);

    if (theWorld.hasColorQD == false) {

        SysBeep(50);

        ExitToShell();

    }*/

    error = Gestalt(gestaltQuickdrawVersion, &result);

    if (error != noErr || result < gestalt8BitQD) {

        SysBeep(50);

        ExitToShell();

    }

    /* Initialize all the needed managers. */

    /*InitGraf(&qd.thePort);

    InitFonts();

    InitWindows();

    InitMenus();

    TEInit();

    InitDialogs(nil);*/

    InitCursor();

    /* Define output window. */

    SetRect(&windRect, 100, 100, 400, 400);

    SetRect(&offRect, 0, 0, 300, 300);

    mainWinPtr = NewCWindow(nil, &windRect, "\pJohn", true, documentProc, (WindowPtr) -1, false, 0);

    //SetPort(mainWinPtr);

    SetPortWindowPort(mainWinPtr);

    GetGWorld(&oldPort, &oldDevice);

    /* Create two offscreen GWorlds. */

    if (NewGWorld(&myOffscreen1, 0, &offRect, nil, nil, 0))

        Debugger();

    if (NewGWorld(&myOffscreen2, 0, &offRect, nil, nil, 0))

        Debugger();

    /* Now, draw ramp to first offscreen pixmap. */

    SetGWorld(myOffscreen1, nil);

    for (i=0; i<10; i++) {

        theColor.red = theColor.green = theColor.blue = (i*28) << 8;

        RGBForeColor(&theColor);

        SetRect(&myRect, 0, i*30, 300, i*30+30);

        PaintRect(&myRect);

    }

    /* Now, draw mask to second offscreen pixmap. */

    SetGWorld(myOffscreen2, nil);

    SetRect(&myRect, 0, 0, 300, 300);

    theColor.red = theColor.green = theColor.blue = (128) << 8;

    RGBForeColor(&theColor);

    PaintRect(&myRect);

    /*  Draw to the ramp to the window. */

    SetGWorld(oldPort, oldDevice);

    /*CopyBits((BitMapPtr) *myOffscreen1->portPixMap, &(*mainWinPtr).portBits, &offRect,

                &offRect, 0, nil);*/

    CopyBits((BitMapPtr) *(GetPortPixMap(myOffscreen1)), GetPortBitMapForCopyBits(GetWindowPort(mainWinPtr)), &offRect,

                &offRect, 0, nil);

    QDFlushPortBuffer(GetWindowPort(mainWinPtr), GetPortVisibleRegion(GetWindowPort(mainWinPtr), rgnHandle));

    /* Wait until user clicks button. */

    do {

    } while (!Button());

    /*  Now fade the window to white using CopyMask.  The destination must be erased

        for CopyMask to work.   */

    SetGWorld(oldPort, oldDevice);

    EraseRect(&offRect);

    /*CopyMask((BitMapPtr) *myOffscreen1->portPixMap, (BitMapPtr) *myOffscreen2->portPixMap,

                &(*mainWinPtr).portBits, &offRect, &offRect, &offRect);*/

    CopyMask((BitMapPtr) *(GetPortPixMap(myOffscreen1)), (BitMapPtr) *(GetPortPixMap(myOffscreen2)),

                GetPortBitMapForCopyBits(GetWindowPort(mainWinPtr)), &offRect, &offRect, &offRect);

    QDFlushPortBuffer(GetWindowPort(mainWinPtr), GetPortVisibleRegion(GetWindowPort(mainWinPtr), rgnHandle));

    /* Wait until user clicks button. */

    do {

    } while (Button());

    do {

    } while (!Button());

    DisposeRgn(rgnHandle);

        return 0;

}