MacTech 1 to 12/MacTech-vol-1-12.toast/Source/MacTech® Magazine/Volume 05 - 1989/05.06 Jun 89/SprayCan Source/ToolDemo.Pas

Pascal/Delphi Source File | 1988-11-19 | 8.6 KB | 355 lines | [TEXT/EDIT]

Program ToolDemo;

{ Turbo Pascal format }

{$U-}
{$R ToolDemoRes}

Uses
  MemTypes,QuickDraw,OSIntf,ToolIntf;

Const
  AppleMenu     = 128;
  FileMenu      = 129;
  EditMenu      = 130;
  ToolMenu      = 131;
    SprayItem   = 1;
    BucketItem  = 2;
  PatternMenu   = 132;
    WhiteItem   = 1;
    LtGrayItem  = 2;
    GrayItem    = 3;
    DkGrayItem  = 4;
    BlackItem   = 5;

Var
  myMenus       : array [AppleMenu..PatternMenu] of MenuHandle;
  myWindow      : WindowPtr;
  Finished      : Boolean;
  GrowArea      : Rect;
  CurrentPat    : Integer;
  CurrentTool   : Integer;

{###############################################################################}

Function NewBitMap (VAR theBitMap : BitMap; theRect : Rect) : Ptr;
Begin
  NewBitMap:= nil;
  with theBitMap,theRect do begin
    rowBytes:= ((right-left+15) DIV 16) *2;
    baseAddr:= NewPtr(rowBytes * (bottom-top));
    bounds:= theRect;
    if MemError = noErr then
      NewBitMap:= baseAddr;
  end;
End;

Procedure DoSprayCan (where : Point);
Var
  workPort  : GrafPtr;
  workBits  : BitMap;
  workRect  : Rect;
  workPat   : Pattern;
  theStr    : Str255;
  tempRect  : Rect;
  SprayBits : BitMap;
  PatBits   : BitMap;
  tickValue : LongInt;
Begin
  GetPort(workPort);
  workBits:= workPort^.portBits;
  workRect:= workPort^.portRect;
  workPat:= workPort^.pnPat;

  GetIndString(theStr,128,1);
  SetRect(tempRect,0,0,16,16);
  if NewBitMap(SprayBits,tempRect) = nil then Exit;
  StuffHex(SprayBits.baseAddr,theStr);

  if NewBitMap(PatBits,workRect) = nil then begin
    DisposPtr(SprayBits.baseAddr);
    Exit;
  end;
  SetPortBits(PatBits);
  FillRect(workRect,workPat);
  SetPortBits(workBits);

  repeat
    GetMouse(where);
    with where do
      SetRect(tempRect,h-8,v-8,h+8,v+8);
    tickValue:= TickCount + 1;
    repeat until (tickValue <= TickCount);
    CopyMask(PatBits,SprayBits,workBits,tempRect,SprayBits.bounds,tempRect);
    tickValue:= TickCount;
    repeat until (tickValue <= TickCount);
  until NOT Button;

  DisposPtr(PatBits.baseAddr);
  DisposPtr(SprayBits.baseAddr);
End;

Procedure DoPaintBucket (where : Point);
Var
  workPort  : GrafPtr;
  workBits  : BitMap;
  workRect  : Rect;
  workPat   : Pattern;
  PatBits   : BitMap;
  onBlack   : Boolean;
  srcMap    : BitMap;
  dstMap    : BitMap;
  srcPtr    : Ptr;
  dstPtr    : Ptr;
  srcRow    : Integer;
  dstRow    : Integer;
  height    : Integer;
  words     : Integer;
Begin
  GetPort(workPort);
  workBits:= workPort^.portBits;
  workRect:= workPort^.portRect;
  workPat:= workPort^.pnPat;

  if NewBitMap(dstMap,workRect) = nil then Exit;
  if NewBitMap(srcMap,workRect) = nil then begin
    DisposPtr(dstMap.baseAddr);
    Exit;
  end;

  CopyBits(workBits,srcMap,workRect,workRect,srcCopy,nil);

  onBlack:= GetPixel(where.h,where.v);
  if onBlack then begin
    SetPortBits(srcMap);
    InvertRect(workRect);
    SetPortBits(workBits);
  end;

  if NewBitMap(PatBits,workRect) = nil then begin
    DisposPtr(dstMap.baseAddr);
    DisposPtr(srcMap.baseAddr);
    Exit;
  end;
  SetPortBits(PatBits);
  FillRect(workRect,workPat);
  if onBlack then InvertRect(workRect);
  SetPortBits(workBits);

  srcPtr:= srcMap.baseAddr;
  srcRow:= srcMap.rowBytes;

  dstPtr:= dstMap.baseAddr;
  dstRow:= dstMap.rowBytes;

  height:= dstMap.bounds.bottom - dstMap.bounds.top;
  words:= (dstRow + 1) DIV 2;

  SeedFill(srcPtr,dstPtr,srcRow,dstRow,height,words,where.h,where.v);
  CopyMask(PatBits,dstMap,srcMap,workRect,workRect,srcMap.bounds);

  if onBlack then begin
    SetPortBits(srcMap);
    InvertRect(workRect);
    SetPortBits(workBits);
  end;
  CopyBits(srcMap,workBits,workRect,workRect,srcCopy,nil);

  DisposPtr(srcMap.baseAddr);
  DisposPtr(dstMap.baseAddr);
  DisposPtr(PatBits.baseAddr);
End;

{###############################################################################}

Procedure ProcessMenu (codeWord : LongInt);
Var
  menuNum   : Integer;
  itemNum   : Integer;
  itemStr   : Str255;
  dummy     : Integer;
Begin
  if codeWord <> 0 then begin
    menuNum := HiWord(codeWord);
    itemNum := LoWord(codeWord);
    case menuNum of
      AppleMenu :
        begin
          GetItem(myMenus[AppleMenu],itemNum,itemStr);
          dummy:= OpenDeskAcc(itemStr);
        end;
      FileMenu : Finished:= TRUE;
      EditMenu : if NOT SystemEdit(itemNum - 1) then ;
      ToolMenu :
        begin
          CheckItem(myMenus[ToolMenu],CurrentTool,false);
          CurrentTool:= itemNum;
          CheckItem(myMenus[ToolMenu],CurrentTool,true);
        end;
      PatternMenu :
        begin
          CheckItem(myMenus[PatternMenu],CurrentPat,false);
          CurrentPat:= itemNum;
          CheckItem(myMenus[PatternMenu],CurrentPat,true);
          SetPort(myWindow);
          case CurrentPat of
            WhiteItem   : PenPat(white);
            LtGrayItem  : PenPat(ltGray);
            GrayItem    : PenPat(gray);
            DkGrayItem  : PenPat(dkGray);
            BlackItem   : PenPat(black);
          end
        end;
    end; {case}
    HiliteMenu(0);
  end; {big if}
End;

{###############################################################################}

Procedure DealWithMouseDowns(theEvent: EventRecord);
Var
  whichWindow   : WindowPtr;
  mouseLoc      : Point;
  windowLoc     : Integer;
  position      : LongInt;
Begin
  mouseLoc:= theEvent.where;
  windowLoc:= FindWindow(mouseLoc,whichWindow);
  case windowLoc of
    inMenuBar   : ProcessMenu(MenuSelect(mouseLoc));
    inSysWindow : SystemClick(theEvent,whichWindow);
    inDrag      : DragWindow(whichWindow,mouseLoc,screenBits.bounds);
    inGoAway    : if TrackGoAway(whichWindow,mouseLoc) then Finished:= true;
    inGrow :
      begin
        position:= GrowWindow(whichWindow,mouseLoc,GrowArea);
        if position <> 0 then begin
          SizeWindow(whichWindow,loword(position),hiword(position),false);
          SetPort(whichWindow);
          InvalRect(whichWindow^.portRect);
        end;
      end;
    inZoomIn,inZoomOut :
      begin
        if TrackBox(whichWindow,mouseLoc,windowLoc) then begin
          SetPort(whichWindow);
          ClipRect(whichWindow^.portRect);
          EraseRect(whichWindow^.portRect);
          ZoomWindow(whichWindow,windowLoc,true);
          InvalRect(whichWindow^.portRect);
        end;
      end;
    inContent :
      begin
        if whichWindow <> FrontWindow then
          SelectWindow(whichWindow)
        else begin
          SetPort(whichWindow);
          GlobalToLocal(mouseLoc);
          case CurrentTool of
            SprayItem   : DoSprayCan(mouseLoc);
            BucketItem  : DoPaintBucket(mouseLoc);
          end;
        end;
      end;
  end;
End;

Procedure DealWithKeyDowns(theEvent: EventRecord);
Var
  CharCode  : char;
Begin
  CharCode:= CHR(BitAnd(theEvent.message,charCodeMask));
  if BitAnd(theEvent.modifiers,CmdKey) = CmdKey
    then ProcessMenu(MenuKey(CharCode));
End;

Procedure DealWithActivates(theEvent: EventRecord);
Var
  theWindow    : WindowPtr;
Begin
  theWindow := WindowPtr(theEvent.message);
  if Odd(theEvent.modifiers)
    then SetPort(theWindow);
End;

Procedure DealWithUpdates(theEvent: EventRecord);
Var
  theWindow : WindowPtr;
  tempPort  : WindowPtr;
Begin
  theWindow := WindowPtr(theEvent.message);
  GetPort(tempPort);
  SetPort(theWindow);
  BeginUpDate(theWindow);
    ClipRect(theWindow^.portRect);
    EraseRect(theWindow^.portRect);
    PenSize(5,5);
    FrameOval(theWindow^.portRect);
    PenSize(1,1);
  EndUpDate(theWindow);
  SetPort(tempPort);
End;

Procedure MainEventLoop;
Var
  Event        : EventRecord;
Begin
  repeat
    SystemTask;
    if GetNextEvent(everyEvent, Event) then
      case Event.what of
        mouseDown   : DealWithMouseDowns(Event);
        AutoKey     : DealWithKeyDowns(Event);
        KeyDown     : DealWithKeyDowns(Event);
        ActivateEvt : DealWithActivates(Event);
        UpdateEvt   : DealWithUpdates(Event);
      end; {case}
  until Finished;
End;

{###############################################################################}

Procedure SetupStuff;
Var
  index : Integer;
Begin
  MaxApplZone;
  InitGraf(@thePort);
  InitFonts;
  InitWindows;
  InitMenus;
  TEInit;
  InitDialogs(nil);

  for index:= AppleMenu to PatternMenu do begin
    myMenus[index] := GetMenu(index);
    InsertMenu(myMenus[index],0);
  end;
  AddResMenu(myMenus[AppleMenu],'DRVR');
  DrawMenuBar;

  CurrentTool:= SprayItem;
  CurrentPat:= BlackItem;

  CheckItem(myMenus[ToolMenu],CurrentTool,true);
  CheckItem(myMenus[PatternMenu],CurrentPat,true);

  myWindow:= GetNewWindow(1000,nil,pointer(-1));

  Finished:= false;
  with screenBits.bounds do
    SetRect(GrowArea,150,150,right,bottom);

  FlushEvents(everyEvent,0);

  InitCursor;
End;

Begin
  SetupStuff;

  MainEventLoop;
End.