/*

    File:       events.c

    Contains:   

    Written by: Edgar Lee       

    Copyright:  Copyright © 1992-1999 by Apple Computer, Inc., All Rights Reserved.

                You may incorporate this Apple sample source code into your program(s) without

                restriction. This Apple sample source code has been provided "AS IS" and the

                responsibility for its operation is yours. You are not permitted to redistribute

                this Apple sample source code as "Apple sample source code" after having made

                changes. If you're going to re-distribute the source, we require that you make

                it clear in the source that the code was descended from Apple sample source

                code, but that you've made changes.

    Change History (most recent first):

                7/13/1999   Karl Groethe    Updated for Metrowerks Codewarror Pro 2.1

*/

#include "FX.h"

void handleMouseDown();

void eventLoop()

{

    EventRecord     event;

    WindowPtr       window;

    short           clickArea;

    Rect            screenRect;

    long            sleep = 30;

    Point           point;

    for (;;)

    {       

        if (WaitNextEvent( everyEvent, &event, sleep, (RgnHandle)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 == inGoAway)

                {

                    if (TrackGoAway( window , event.where ))

                        ExitToShell();

                }

                else if (clickArea == inMenuBar)

                {

                    adjustMenus();

                    handleMenu( MenuSelect( event.where ) );

                }

                else if (clickArea == inContent)

                {

                    if (window != FrontWindow())

                        SelectWindow( window );

                    else

                    {

                        point = event.where;

                        GlobalToLocal( &point );

                        handleMouseDown( point );

                    }

                }

            }

            else if (event.what == updateEvt)

            {

                window = (WindowPtr)event.message;

                //SetPort( window );

                SetPortWindowPort( window );

                BeginUpdate( window );

                updateWindow();

                EndUpdate( window );

            }

            else if (event.what ==  keyDown || event.what == autoKey)

            {

                if ((event.modifiers & cmdKey) != 0)

                {

                    adjustMenus();

                    handleMenu( MenuKey( (char)(event.message & charCodeMask) ) );

                }

            }

        }

    }

}

void handleMouseDown( Point point )

{

    int     i;

    long    ticks;

    int     itemNum = -1;

    Rect    tempRect1, tempRect2;

    for (i = 0; i < numBItems; i++)

        if (PtInRect( point, &bItem[i].rect ))

        {

            if (i == settings.bItem - 1)

                return;

            drawItem( bItem[settings.bItem - 1].rect.left, bItem[settings.bItem - 1].rect.top,

                                &bItem[settings.bItem - 1].label, true, false );

            drawItem( bItem[i].rect.left, bItem[i].rect.top,

                                &bItem[i].label, true, true );

            itemNum = 0;

            settings.bItem = i + 1;

            break;

        }               

    if (gCurrentExample / 10 == transferID || gCurrentExample / 10 == customID)

        for (i = 0; i < numTItems && itemNum == -1; i++)

            if (PtInRect( point, &tItem[i].rect ))

            {

                if (gCurrentExample % 10 != i + 1 || gCurrentExample / 10 == customID)

                {

                    drawItem( tItem[settings.tItem - 1].rect.left, tItem[settings.tItem - 1].rect.top,

                                &tItem[settings.tItem - 1].label, true, false );

                    drawItem( tItem[i].rect.left, tItem[i].rect.top,

                                &tItem[i].label, true, true );

                    itemNum = i + 1;

                    settings.tItem = itemNum;

                }               

                break;

            }

    if (gCurrentExample / 10 == arithmeticID || gCurrentExample / 10 == customID)           

        for (i = 0; i < numAItems && itemNum == -1; i++)

            if (PtInRect( point, &aItem[i].rect ))

            {

                if (gCurrentExample % 10 != i + 1 || gCurrentExample / 10 == customID)

                {

                    drawItem( aItem[settings.aItem - 1].rect.left, aItem[settings.aItem - 1].rect.top,

                                &aItem[settings.aItem - 1].label, true, false );

                    drawItem( aItem[i].rect.left, aItem[i].rect.top,

                                &aItem[i].label, true, true );

                    itemNum = i + 1;

                    settings.aItem = itemNum;

                }       

                break;

            }

    if (gCurrentExample / 10 == colorizationID || gCurrentExample / 10 == customID) 

        for (i = 0; i < numCItems && itemNum == -1; i++)

            if (PtInRect( point, &cItem[i].rect ))

            {

                if (gCurrentExample % 10 != i + 1 || gCurrentExample / 10 == customID)

                {

                    drawItem( cItem[settings.cItem - 1].rect.left, cItem[settings.cItem - 1].rect.top,

                                &cItem[settings.cItem - 1].label, true, false );

                    drawItem( cItem[i].rect.left, cItem[i].rect.top,

                                &cItem[i].label, true, true );

                    itemNum = i + 1;

                    settings.cItem = itemNum;

                }

                break;

            }

    if (gCurrentExample / 10 == ditherID || gCurrentExample / 10 == customID)

        for (i = 0; i < numDItems && itemNum == -1; i++)

            if (PtInRect( point, &dItem[i].rect ))

            {

                if (gCurrentExample % 10 != i + 1 || gCurrentExample / 10 == customID)

                {

                    drawItem( dItem[settings.dItem - 1].rect.left, dItem[settings.dItem - 1].rect.top,

                                &dItem[settings.dItem - 1].label, true, false );

                    drawItem( dItem[i].rect.left, dItem[i].rect.top,

                                &dItem[i].label, true, true );

                    itemNum = i + 1;

                    settings.dItem = itemNum;

                }

                break;

            }

    if (gCurrentExample / 10 == searchProcID || gCurrentExample / 10 == customID)

        for (i = 0; i < numMItems && itemNum == -1; i++)

            if (PtInRect( point, &mItem[i].rect ))

            {

                if (gCurrentExample % 10 != i + 1 || gCurrentExample / 10 == customID)

                {

                    drawItem( mItem[settings.mItem - 1].rect.left, mItem[settings.mItem - 1].rect.top,

                                &mItem[settings.mItem - 1].label, true, false );

                    drawItem( mItem[i].rect.left, mItem[i].rect.top,

                                &mItem[i].label, true, true );

                    itemNum = i + 1;

                    settings.mItem = itemNum;

                }   

                break;

            }

    if (gCurrentExample / 10 == paintBucketID)

    {

        Rect    rect;

        void    paintBucketExample();

        /*SetRect( &rect, (*gWindow).portRect.right - (*gGWorld).portRect.right - 20, 37,

                (*gWindow).portRect.right - 20, 37 + (*gGWorld).portRect.bottom );*/

        GetPortBounds(GetWindowPort(gWindow), &tempRect1);

        GetPortBounds(gGWorld, &tempRect2);

        SetRect( &rect, tempRect1.right - tempRect2.right - 20, 37,

                tempRect1.right - 20, 37 + tempRect2.bottom);

        paintBucketExample( &rect, 0, point );

    }

    /*

    if (gCurrentExample / 10 == lassoID)

    {

        Rect    rect;

        Rect    frame;

        void    lassoToolExample();

        frame.left = point.h;

        frame.top = point.v;

        while( StillDown() )

        {

            GetMouse( &point );

            frame.right = point.h;

            frame.bottom = point.v;

        }

        SetRect( &rect, (*gWindow).portRect.right - (*gGWorld).portRect.right - 20, 37,

                (*gWindow).portRect.right - 20, 37 + (*gGWorld).portRect.bottom );

        lassoToolExample( &rect, 0, &frame );

    }

    */

    if (itemNum != -1)

    {

        if (itemNum == 0)

        {

            drawSourceImage();

            ticks = drawFXImage();

            drawTime( ticks );

        }

        else

        {

            if (gCurrentExample / 10 == customID)

                itemNum = gCurrentExample;

            else

                itemNum = ((gCurrentExample / 10) * 10) + itemNum;

            if (itemNum != gCurrentExample || itemNum / 10 == customID)

            {

                gCurrentExample = itemNum;

                drawSourceImage();

                ticks = drawFXImage();

                drawTime( ticks );

            }

        }

    }

}