/*

    File:       mylistdef.c

    Contains:   This LDEF displays small icons to the left of text in a list.

                The small icon is stored in the first 16 bytes of each cell.

    Written by: Steven Falkenburg   

    Copyright:  Copyright © 1991-1999 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):

                8/10/1999   Karl Groethe    Updated for Metrowerks Codewarror Pro 2.1

*/

#include <Types.h>

#include <QuickDraw.h>

#include <Lists.h>

#include <Memory.h>

/* constants for spacing */

#define kLeftOffset 2

#define kTopOffset  0

#define kIconSpace  2

/* prototypes */

void DrawSICN(Ptr theSICN,short left,short top,GrafPtr drawPort);

pascal void theLDEF(short lMessage,Boolean lSelect,Rect *lRect,Cell lCell,

                short lDataOffset,short lDataLen,ListHandle lHandle);

/* main LDEF entry point */

pascal void theLDEF(short lMessage,Boolean lSelect,Rect *lRect,Cell lCell,

                short lDataOffset,short lDataLen,ListHandle lHandle)

{

    #pragma unused(lCell)

    FontInfo fontInfo;                      /* font information (ascent/descent/etc) */

    ListPtr listPtr;                        /* pointer to store dereferenced list */

    SignedByte hStateList,hStateCells;      /* state variables for HGetState/SetState */

    Ptr cellData;                           /* points to start of cell data for list */

    Ptr theSICN;                            /* points to SICN to be drawn */

    short leftDraw,topDraw;                 /* left/top offsets from topleft of cell */

    /* lock and dereference list mgr handles */

    hStateList = HGetState((Handle)lHandle);

    HLock((Handle)lHandle);

    listPtr = *lHandle;

    hStateCells = HGetState(listPtr->cells);

    HLock(listPtr->cells);

    cellData = *(listPtr->cells);

    switch (lMessage) {

      case lInitMsg:

        /* we don't need any initialization */

        break;

      case lDrawMsg:

        EraseRect(lRect);

        if (lDataLen > 0) {

            /* determine starting point for drawing */

            leftDraw =  lRect->left+listPtr->indent.h+kLeftOffset;

            topDraw =   lRect->top+listPtr->indent.v+kTopOffset;

            /* plot SICN (first 32 bytes) */

            if (lDataLen > 32) {

                theSICN = cellData+lDataOffset;

                DrawSICN(theSICN,leftDraw,topDraw,listPtr->port);

                lDataOffset += 32;

                lDataLen -= 32;

            }

            leftDraw += 16+kIconSpace;

            /* plot text (offset 32 bytes onward) */

            GetFontInfo(&fontInfo);

            MoveTo(leftDraw,topDraw+fontInfo.ascent);

            /* set condensed mode if necessary (if the text doesn't fit otherwise) */

            TextFace(0);

            if (TextWidth(cellData,lDataOffset,lDataLen) > (lRect->right - leftDraw))

                TextFace(condense);

            DrawText(cellData,lDataOffset,lDataLen);

        }

        if (!lSelect)

            break;

      case lHiliteMsg:

        InvertRect(lRect);

        break;

      case lCloseMsg:

        break;

    }

    HSetState((Handle)listPtr->cells,hStateCells);

    HSetState((Handle)lHandle,hStateList);

}

/* this procedure draws a small icon using CopyBits */

void DrawSICN(Ptr theSICN,short left,short top,GrafPtr drawPort)

{

    BitMap iconMap;

    Rect destRect;

    iconMap.baseAddr = theSICN;

    iconMap.rowBytes = 2;

    SetRect(&iconMap.bounds,0,0,16,16);

    SetRect(&destRect,0,0,16,16);

    OffsetRect(&destRect,left,top);

    CopyBits(&iconMap,&drawPort->portBits,&iconMap.bounds,&destRect,

            srcCopy,nil);

}