/*

    File:       SeedCFill.c

    Contains:   This snippet shows how to use the SeedCFill routine         

                to create a mask given a source image. As decribed          

                on page 71 of Inside Mac volume V, this routine             

                computes a destination bitmap image with 1's only           

                in the pixels where paint can not leak from the             

                starting seed point. This is similar to the paint-          

                bucket tool.        

    Written by: EL  

    Copyright:  Copyright © 1992-1999 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

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                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.

        7/14/1999   KG              Updated for Metrowerks Codewarror Pro 2.1

*/

#include "CarbonPrefix.h"

/* Constant Declarations */

#define WWIDTH      (176 * 2)

#define WHEIGHT     (106 * 2)

//#define WLEFT     (((qd.screenBits.bounds.right - qd.screenBits.bounds.left) - WWIDTH) / 2)

//#define WTOP      (((qd.screenBits.bounds.bottom - qd.screenBits.bounds.top) - WHEIGHT) / 2)

/* Global Variable Definitions */

WindowPtr   gWindow;

void initMac();

void createWindow();

void doSeedCFillExample();

void DisposeGrafPort(GrafPtr);

void doEventLoop();

int main(void)

{

    initMac();

    createWindow();

    doEventLoop();

        return 0;

}

void initMac()

{

    //MaxApplZone();

    //InitGraf( &qd.thePort );

    //InitFonts();

    //InitWindows();

    //InitMenus();

    //TEInit();

    //InitDialogs( nil );

    InitCursor();

    FlushEvents( 0, everyEvent );

}

void createWindow()

{

    Rect            rect;

    PaletteHandle   palette;

    BitMap          bitMap;

    int             left, top;

    GetQDGlobalsScreenBits(&bitMap);

    left = (((bitMap.bounds.right - bitMap.bounds.left) - WWIDTH) / 2);

    top = (((bitMap.bounds.bottom - bitMap.bounds.top) - WHEIGHT) / 2);

    //SetRect( &rect, WLEFT, WTOP, WLEFT + WWIDTH, WTOP + WHEIGHT );

    SetRect( &rect, left, top, left + WWIDTH, top + WHEIGHT );

    gWindow = NewCWindow( 0L, &rect, "\pClick anywhere in left image.", true, documentProc,

                            (WindowPtr)-1L, true, 0L );

    //SetPort( gWindow );

    SetPortWindowPort( gWindow );

    /****************************************************************************/  

    /* Attach a palette of the default colortable to the window.                */

    /*  WARNING: SeedCFill may not work if the current gDevice's colortable is  */

    /*  different than that of the offscreen's colortable.  This offscreen is   */

    /*  the one passed into SeedCFill.  To eliminate this problem, we attach a  */

    /*  palette contaning the same colors used by the offscreen to the window.  */

    /****************************************************************************/

    palette = NewPalette( 256, GetCTable( 8 ), pmTolerant, 0 );

    SetPalette( gWindow, palette, true );

}

void doSeedCFillExample( point )

Point   point;

{

    PicHandle       pict;               /* Pict used for the source. */

    GWorldPtr       source;             /* Gworld used to store the pict. */

    PixMapHandle    sourcePixMap;       /* Handle to the source Gworld. */

    //GrafPtr           mask;           /* BitMap used for creating the mask. */

    int             seedH, seedV;       /* Pixel position used to determine the mask. */

    Rect            rect;               /* Bounding rect of mask and source. */

    CGrafPtr        currentPort;        /* Saved CGrafPtr for later restore. */

    GDHandle        currentDevice;      /* Saved device for later restore. */

    Rect            tempRect1;

    GrafPtr         oldPort;

    GWorldPtr       newMask;            // new mask, use a GWorld as opposed to a new port

    GetPort(&oldPort);

    SetPortWindowPort( gWindow );

    /* Load the pict resource to be used for the source. */

    pict = (PicHandle)GetResource( 'PICT', 128 );

    /* Define the bounding rect for the source and mask. */

    rect = (**pict).picFrame;

    OffsetRect( &rect, -rect.left, -rect.top );

    rect.right *= 2;

    rect.bottom *= 2;

    /* Draw the source image in the window to see what the mask will be created from. */

    DrawPicture( pict, &rect );

    /* Return if mouse click was not within the source rect. */

    if (point.h < rect.left || point.h > rect.right ||

        point.v < rect.top || point.v > rect.bottom)

            return;

    /* Create a gworld to store the pict. */

    NewGWorld( &source, 8, &rect, GetCTable( 8 ), nil, 0 );

    LockPixels( GetGWorldPixMap( source ) );

    sourcePixMap = GetGWorldPixMap( source );

    /* Draw the pict into the gworld. */

    GetGWorld( &currentPort, &currentDevice );

    SetGWorld( source, nil );

    DrawPicture( pict, &rect );

    /* Allocate a bitmap for the mask. */

    NewGWorld( &newMask, 1, &(**sourcePixMap).bounds, nil, nil, 0 );

    SetGWorld( newMask, nil);

    EraseRect( &(**sourcePixMap).bounds );

    SetGWorld( currentPort, currentDevice );

    /* Use the mouse click as the starting seed position. */

    seedH = point.h;

    seedV = point.v;

    /* Create a mask from the source, starting from the seed point. */

    /*SeedCFill( (BitMap *)*sourcePixMap, &(*mask).portBits, &(**sourcePixMap).bounds,

                &(*mask).portRect, seedH, seedV, nil, 0 );*/

    LockPixels(GetGWorldPixMap(newMask));

    SeedCFill( (BitMap *)*sourcePixMap, (BitMap *) *(GetGWorldPixMap(newMask)), &(**sourcePixMap).bounds,

                GetPortBounds(newMask, &tempRect1), seedH, seedV, nil, 0 );

    /* Draw a red cross where the mouse was last clicked. */

    ForeColor( redColor );

    MoveTo( rect.left + seedH - 2, seedV );

    LineTo( rect.left + seedH + 2, seedV );

    MoveTo( rect.left + seedH, seedV - 2 );

    LineTo( rect.left + seedH, seedV + 2 );

    ForeColor( blackColor );

    BackColor( whiteColor );

    OffsetRect( &rect, (**sourcePixMap).bounds.right, 0 );

    EraseRect( &rect );

    /* Copy the source to the window while applying the mask. */

    /*CopyMask( (BitMap *)*sourcePixMap, &((GrafPtr)mask)->portBits, &gWindow->portBits,

                &(**sourcePixMap).bounds, &((GrafPtr)mask)->portRect, &rect );*/

    CopyMask( (BitMap *)*sourcePixMap, (BitMap *) *(GetGWorldPixMap(newMask)), GetPortBitMapForCopyBits(GetWindowPort(gWindow)),

                &(**sourcePixMap).bounds, GetPortBounds(newMask, &tempRect1), &rect );

    /* Release the used memory. */

    //DisposeGrafPort( (GrafPtr)mask );

    UnlockPixels(GetGWorldPixMap(newMask));

    UnlockPixels(GetGWorldPixMap(source));

    DisposeGWorld( newMask );

    DisposeGWorld( source );

    HPurge( (Handle)pict );

    SetPort(oldPort); //restore port

}

void DisposeGrafPort( GrafPtr doomedPort )  /* DisposeGrafPort originally written by Forrest Tanaka. */

{

    //ClosePort( doomedPort );

    //DisposePtr( doomedPort->portBits.baseAddr );

    DisposePtr( GetPortBitMapForCopyBits(doomedPort)->baseAddr );

    //DisposePtr( (Ptr)doomedPort );

    DisposePort( doomedPort );

}

void doEventLoop()

{

    EventRecord     event;

    WindowPtr       window;

    short           clickArea;

    Rect            screenRect;

    static Point    point = { -1, -1 };

    for (;;)

    {

        if (WaitNextEvent( everyEvent, &event, 0, nil ))

        {

            if (event.what == mouseDown)

            {

                clickArea = FindWindow( event.where, &window );

                if (clickArea == inDrag)

                {

                    //screenRect = (**GetGrayRgn()).rgnBBox;

                    GetRegionBounds(GetGrayRgn(), &screenRect);

                    DragWindow( window, event.where, &screenRect );

                }

                else if (clickArea == inContent)

                {

                    if (window != FrontWindow())

                        SelectWindow( window );

                    else

                    {

                        point = event.where;

                        GlobalToLocal( &point );

                        doSeedCFillExample( point );

                    }

                }

                else if (clickArea == inGoAway)

                                {

                    if (TrackGoAway( window, event.where ))

                                        {

                        return;

                                        }

                                }

            }

            else if (event.what == updateEvt)

            {

                window = (WindowPtr)event.message;  

                //SetPort( window );

                BeginUpdate( window );

                doSeedCFillExample( point );

                EndUpdate( window );

            }

        }

    }

}