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MacPaint.p
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PROGRAM MacPaint;
{ BitMap Painting Program by Bill Atkinson }
{$D- }
{$R- }
{$X- }
USES {$U obj:HeapZone } HeapZone,
{$U obj:QuickDraw } QuickDraw,
{$U obj:MacFMgr } Fonts,
{$U obj:GrafUtil } GrafUtil,
{$U obj:MacEMgr } Events,
{$U obj:MacWMgr } Windows,
{$U obj:MacDskMgr } DeskMgr,
{$U obj:TextEdit } TextEdit,
{$U obj:MacDMgr } Dialogs,
{$U obj:MacRMgr } Resources,
{$U obj:MacSMgr } ScrapMgr,
{$U obj:MacMMgr } Menus,
{$U obj:MacCMgr } Controls,
{$U obj:StdFile } StdFile,
{$U Obj:MacPrint } MacPrint;
CONST paintFont = 249;
minDiskSpace = 16384;
firstPat = 0;
lastPat = 37;
corner = 18; { diameter of curvature for roundRects }
shiftCode = 63;
optionCode = 61;
featureCode = 48;
alphaCode = 62;
bsCode = 52;
enterCode = 51;
undoCode = 53;
tabCode = 55;
printMsg = 1;
endOfFile = -39;
fileExists = -48;
appleMenu = 1;
fileMenu = 2;
newItem = 1;
openItem = 2;
closeItem = 3;
saveItem = 4;
saveAsItem = 5;
revertItem = 6;
prDraftItem = 7;
prFinalItem = 8;
prCatItem = 9;
quitItem = 10;
editMenu = 3;
undoItem = 1;
blank0Item = 2;
cutItem = 3;
copyItem = 4;
pasteItem = 5;
clearItem = 6;
blank1Item = 7;
invertItem = 8;
fillItem = 9;
edgesItem = 10;
hFlipItem = 11;
vFlipItem = 12;
rotateItem = 13;
aidsMenu = 4;
gridItem = 1;
fatItem = 2;
pageItem = 3;
patEdItem = 4;
brushItem = 5;
symItem = 6;
introItem = 7;
shortItem = 8;
fontMenu = 5;
firstFont = 1;
sizeMenu = 6;
firstSize = 1;
lastSize = 9;
styleMenu = 7;
plainItem = 1;
boldItem = 2;
italicItem = 3;
underItem = 4;
outlineItem = 5;
shadowItem = 6;
blank2Item = 7;
leftItem = 8;
centerItem = 9;
rightItem = 10;
firstMenu = appleMenu;
lastMenu = styleMenu;
docWidth = 576;
docHeight = 720;
docRow = 72;
bandHeight = 48;
bandCount = 15;
patLeft = 77; { pattern rectangle }
patRight = 500;
patTop = 300;
patBottom = 335;
patMid = 317;
patSpace = 20;
patRow = 19; { how many patterns each row }
patStart = 120; { patRight - patRow*patSpace }
lineLeft = 15; { line attributes rectangle }
lineRight = 68;
lineTop = 258;
lineBottom = 335;
lineMid = 40; { (lineLeft + lineRight) DIV 2 }
toolLeft = 15; { tool rectangle }
toolRight = 68;
toolTop = 28;
toolBottom = 249;
toolMid = 41; { (toolLeft + toolRight) DIV 2 }
toolSpace = 22;
lassoTool = 0;
selectTool = 1;
grabberTool = 2;
textTool = 3;
fillTool = 4;
sprayTool = 5;
brushTool = 6;
pencilTool = 7;
lineTool = 8;
eraseTool = 9;
rectTool = 11;
closeDlog = 2001;
quitDlog = 2002;
patEdDlog = 2003;
brushDlog = 2004;
symDlog = 2005;
paintDlog = 2006;
revertAlrt = 2101;
diskAlrt = 2102;
wFullAlrt = 2103;
wProtAlrt = 2104;
wErrAlrt = 2105;
rErrAlrt = 2106;
rScrapAlrt = 2107;
wScrapAlrt = 2108;
workSpaceAlrt = 2109;
memFullAlrt = 2110;
fileLockAlrt = 2111;
notPntgAlrt = 2112;
bigScrapAlrt = 2113;
notRoomAlrt = 2114;
oldPrAlrt = 2115;
titleString = 2201;
fontCmdString = 2202;
headerString = 2203;
untitledString = 2204;
rescueString = 2205;
saveString = 2206;
patListID = 0; { use system patlist }
introPic = 2400;
shortPic = 2401;
okBtn = 2501;
cancelBtn = 2502;
buttonCorner = 8; { diameter for button roundRects }
maxLines = 20; { how many lines of type-in text }
TYPE Str63 = String[63];
DiskBlock = ARRAY[0..255] OF INTEGER;
ShapeCode = (rectShape,rRectShape,ovalShape);
Longs24 = ARRAY[1..24] OF LongInt;
EntryPtr = ^QueueEntry; { for mask stuff }
QueueEntry = RECORD
addr: LongInt;
bump: INTEGER; { +2 or -2 for right or left }
twoH: INTEGER; { 2 times horiz word coord }
mask: INTEGER;
END;
VAR heapJam: BOOLEAN;
tempWord: INTEGER;
tempLong: LongInt;
finderMsg: INTEGER;
active: BOOLEAN;
ornFlag: BOOLEAN;
scrnFlag: BOOLEAN; { TRUE when screen in altbuf }
quitFlag: BOOLEAN;
theEvent: EventRecord;
okPrint: BOOLEAN;
workFrom,workTo: INTEGER; { file refNums of working files }
rescueFlag: BOOLEAN;
docName: Str63;
docDrive: INTEGER;
docVersion: INTEGER;
workDrive: INTEGER;
workSize: LongInt; { current size of workFrom file }
scrapFile: INTEGER;
scrapByte: LongInt;
docDirty: BOOLEAN;
workDirty: BOOLEAN;
windOpen: BOOLEAN;
heapTop: LongInt;
myWind: WindowRecord;
deskWind: WindowRecord;
okButton,cancelButton: ControlHandle;
theKey: CHAR;
shiftFlag: BOOLEAN;
featureFlag: BOOLEAN;
optionFlag: BOOLEAN;
hiResFlag: BOOLEAN;
theMenu: INTEGER;
theItem: INTEGER;
textFlag: BOOLEAN;
textLoc: Point;
textLeft: INTEGER;
caretLoc: Point;
caretState: BOOLEAN;
nextCaretTime: LongInt;
textLines: INTEGER;
textHandles: ARRAY[1..maxLines] OF StringHandle;
prevSizeChar: CHAR;
nextSizeChar: CHAR;
clickTime: LongInt;
clickCount: INTEGER;
clickLoc: Point;
killDouble: BOOLEAN;
skipDouble: BOOLEAN;
myMenus: ARRAY[firstMenu..lastMenu] OF MenuHandle;
patterns: ARRAY[firstPat..lastPat] OF Pattern;
lineSize: INTEGER;
halfLineSize: INTEGER;
borderFlag: BOOLEAN;
thePat: Pattern;
thePatIndex: INTEGER;
gridOn: BOOLEAN; { is the grid requested ? }
toolGrid: BOOLEAN; { does the current tool grid ? }
toolCursor: Cursor;
cursorFlag: BOOLEAN; { true for new cursor shape }
inWindow: BOOLEAN;
inSel: BOOLEAN;
fatScroll: BOOLEAN;
txScrapHndl: Handle;
txScrapSize: LongInt;
txMinWidth: INTEGER;
txMinHeight: INTEGER;
txMaxCount: INTEGER;
theFont: INTEGER;
lastFont: INTEGER;
theFontID: INTEGER;
fontSizes: ARRAY[firstSize..lastSize] OF INTEGER;
theFontSize: INTEGER;
txJustItem: INTEGER;
textJust: INTEGER;
info: FontInfo;
zeroRect: Rect;
pageRect: Rect;
docRect: Rect;
patRect: Rect;
fillSample: Rect;
lineRect: Rect;
toolRect: Rect;
whiteFlag: BOOLEAN;
acceptFlag: BOOLEAN;
selFlag: BOOLEAN;
selRect: Rect;
pivot: Point;
edgeFlag: BOOLEAN; { true if edges in altBits }
lassoBlack: BOOLEAN;
maskFlag: BOOLEAN; { true if mask in maskBits }
maskBits: BitMap;
maskHandle: Handle;
maskPaste: BOOLEAN;
oldWhiteFlag: BOOLEAN;
oldAcceptFlag: BOOLEAN;
oldSelFlag: BOOLEAN;
oldSelRect: Rect;
oldPivot: Point;
oldMaskFlag: BOOLEAN;
oldLassoBlack: BOOLEAN;
selIndex: INTEGER;
theTool: INTEGER;
prevTool: INTEGER;
theBrush: INTEGER;
hSymFlag: BOOLEAN;
vSymFlag: BOOLEAN;
hvSymFlag: BOOLEAN;
vhSymFlag: BOOLEAN;
symByte: QDByte;
fatFlag: BOOLEAN;
fatBits: BitMap;
fatBuf: ARRAY[0..31,0..1] OF LongInt;
fatCenter: Point;
docBits: BitMap;
mainBits: BitMap;
mainBuf: ARRAY[0..239,0..12] OF LongInt;
altBits: BitMap;
altBuf: ARRAY[0..239,0..12] OF LongInt;
scrnPtr: QDPtr;
myPinRect: Rect;
hConstrain: BOOLEAN; { used by HVConstrain }
vConstrain: BOOLEAN; { used by HVConstrain }
ptConstrain: Point; { used by HVConstrain }
rwShftDh: INTEGER; { inputs to ReadWrite }
rwShftDv: INTEGER;
rwResult: INTEGER; { IO result from ReadWrite }
patEdPt: Point;
whichMenu: INTEGER; { for EnableOne }
PROCEDURE EjectReset; EXTERNAL;
FUNCTION PixelTrue(h,v: INTEGER; bits: BitMap): BOOLEAN; EXTERNAL;
PROCEDURE MapCursor(tool,lineSize,brush: INTEGER; dstPtr: QDPtr); EXTERNAL;
FUNCTION Monkey: BOOLEAN; EXTERNAL;
PROCEDURE Stretch2x(srcPtr,dstPtr: QDPtr); EXTERNAL;
PROCEDURE MySetItemStyle(menu: menuHandle; item: INTEGER;
txFace: INTEGER); EXTERNAL;
PROCEDURE MyGetItem(menu: menuHandle; item: INTEGER;
VAR itemString: Str63); EXTERNAL;
PROCEDURE MoreMasters; EXTERNAL;
PROCEDURE ExitToShell; EXTERNAL;
FUNCTION Trunc8(i: INTEGER): INTEGER; EXTERNAL;
FUNCTION GetDoubleTime: LONGINT; EXTERNAL;
FUNCTION GetCaretTime: LONGINT; EXTERNAL;
PROCEDURE SystemBeep(duration: INTEGER); EXTERNAL;
PROCEDURE Moov(dh,dv: INTEGER); EXTERNAL;
FUNCTION MapSym(hSym,vSym,hvSym,vhSym: BOOLEAN): QDByte; EXTERNAL;
FUNCTION StackPtr: LongInt; EXTERNAL;
PROCEDURE ShieldCursor(shieldRect: Rect; offset: Point); EXTERNAL;
FUNCTION WorstStack: LongInt; EXTERNAL;
FUNCTION EqualString(str1,str2: Str255): BOOLEAN; EXTERNAL;
PROCEDURE ExpandPat(pat: Pattern; VAR exPat: Longs24;
hShift: INTEGER); EXTERNAL;
PROCEDURE DrawBrush(brush: Bits16; exPat: Longs24;
hCenter,vCenter: INTEGER;
dstBits: BitMap; clip: Rect; orMode: BOOLEAN); EXTERNAL;
FUNCTION NearPt(pt1,pt2: Point; tol: INTEGER): BOOLEAN; EXTERNAL;
PROCEDURE HToneRow(thisRow,nextRow: QDPtr;
dstBits: BitMap;
hStart,vStart,hSize: INTEGER;
whiteLevel,blackLevel: INTEGER;
threshold: BOOLEAN); EXTERNAL;
PROCEDURE SampleBits(src,dst: QDPtr); EXTERNAL;
PROCEDURE DeleteChar(str: Str255); EXTERNAL;
PROCEDURE AppendChar(ch: CHAR; str: str255); EXTERNAL;
PROCEDURE WindPaint(flag: BOOLEAN); EXTERNAL;
PROCEDURE TrimBBox(dstBuf: QDPtr; VAR dstRect: Rect); EXTERNAL;
PROCEDURE GridMouse(hMask,vMask,hOffset,vOffset: INTEGER); EXTERNAL;
PROCEDURE UnloadSeg(segPtr: QDPtr); EXTERNAL;
PROCEDURE GetSelPat(patIndex: INTEGER; VAR pat: Pattern); EXTERNAL;
PROCEDURE CalcEdges(srcBuf,dstBuf: QDPtr; topVert,height: INTEGER;
lassoBlack: BOOLEAN); EXTERNAL;
PROCEDURE AntsToScrn(edgeBuf,srcnPtr: QDPtr;
maskRect: Rect; patIndex: INTEGER); EXTERNAL;
PROCEDURE InvertChunk(dstAddr: LongInt; wordWd,height: INTEGER); EXTERNAL;
PROCEDURE PackBits(VAR srcPtr,dstPtr: QDPtr; srcBytes: INTEGER); EXTERNAL;
PROCEDURE UnpackBits(VAR srcPtr,dstPtr: QDPtr; dstBytes: INTEGER); EXTERNAL;
PROCEDURE InvertBuf(bufPtr: QDPtr); EXTERNAL;
PROCEDURE ZeroBuf(bufPtr: QDPtr); EXTERNAL;
PROCEDURE ZeroFat(fatPtr: QDPtr); EXTERNAL;
PROCEDURE ZeroMem(bandPtr: QDPtr; byteCount: INTEGER); EXTERNAL;
PROCEDURE CopyLongs(srcPtr,dstPtr: QDPtr; longCount: INTEGER); EXTERNAL;
FUNCTION EqualLongs(srcPtr,dstPtr: QDPtr; longCount: INTEGER): BOOLEAN; EXTERNAL;
PROCEDURE BufToBuf(srcPtr,dstPtr: QDPtr); EXTERNAL;
PROCEDURE BufOrBuf(srcPtr,dstPtr: QDPtr); EXTERNAL;
PROCEDURE BufXorBuf(srcPtr,dstPtr: QDPtr); EXTERNAL;
PROCEDURE BufAndBuf(srcPtr,dstPtr: QDPtr); EXTERNAL;
PROCEDURE ScrnToBuf(scrnPtr,bufPtr: QDPtr); EXTERNAL;
PROCEDURE BufToScrn(bufPtr,scrnPtr: QDPtr; top,bottom: INTEGER); EXTERNAL;
PROCEDURE SwapBuf(srcBuf,dstBuf: QDPtr); EXTERNAL;
PROCEDURE FatToScrn(fatPtr,scrnPtr: QDPtr); EXTERNAL;
PROCEDURE VFlipBuf(srcBuf,dstBuf: QDPtr); EXTERNAL;
PROCEDURE HFlipBuf(srcBuf,dstBuf: QDPtr; top,bot: INTEGER); EXTERNAL;
PROCEDURE RotBuf(srcBuf,dstBuf: QDPtr; height: INTEGER); EXTERNAL;
FUNCTION GetRgnMax: INTEGER; EXTERNAL;
FUNCTION VertSeed(mask,data: INTEGER): INTEGER; EXTERNAL;
PROCEDURE MaskIt(dstStart,dstLimit,srcOffset: LongInt;
hLim,row: INTEGER;
readPtr,donePtr: EntryPtr;
VAR writePtr: EntryPtr); EXTERNAL;
{ I/O routines }
PROCEDURE FlushVol(driveNum: INTEGER); EXTERNAL;
FUNCTION FinderDoc(VAR drive,version: INTEGER; strPtr: QDPtr): INTEGER; EXTERNAL;
PROCEDURE SetDocType(drive,version: INTEGER; docName: Str63); EXTERNAL;
FUNCTION CheckPntg(drive,version: INTEGER; docName: Str63): BOOLEAN; EXTERNAL;
PROCEDURE FileInfo(drive,version: INTEGER; fName: Str63;
VAR fileDate,fileSize: LongInt); EXTERNAL;
FUNCTION DiskSpace(drive: INTEGER): LongInt; EXTERNAL;
FUNCTION CountFiles(drive: INTEGER; VAR str: Str63): INTEGER; EXTERNAL;
FUNCTION NextFile(drive: INTEGER; index: INTEGER; fileType: ResType;
VAR str: Str63; VAR version: INTEGER): BOOLEAN; EXTERNAL;
FUNCTION CreateFile(drive,version: INTEGER; fileName: Str63): INTEGER; EXTERNAL;
FUNCTION DeleteFile(drive,version: INTEGER; fileName: Str63): INTEGER; EXTERNAL;
FUNCTION OpenFile(drive,version: INTEGER; fileName: Str63;
ownBuf: QDPtr; VAR refNum: INTEGER): INTEGER; EXTERNAL;
FUNCTION CloseFile(refNum: INTEGER): INTEGER; EXTERNAL;
FUNCTION SetEOF(refNum: INTEGER; byteCount: LongInt): INTEGER; EXTERNAL;
FUNCTION ReadData(refNum: INTEGER;
VAR startByte: LongInt;
byteCount: LongInt;
bufPtr: QDPtr): INTEGER; EXTERNAL;
FUNCTION WriteData(refNum: INTEGER;
VAR startByte: LongInt;
byteCount: LongInt;
bufPtr: QDPtr): INTEGER; EXTERNAL;
FUNCTION Min(i,j: INTEGER): INTEGER; EXTERNAL;
FUNCTION Max(i,j: INTEGER): INTEGER; EXTERNAL;
FUNCTION PinWord(i,min,max: INTEGER): INTEGER; EXTERNAL;
PROCEDURE PinPt(VAR pt: Point; pinRect: Rect); EXTERNAL;
PROCEDURE SwapBool(VAR a,b: BOOLEAN); EXTERNAL;
PROCEDURE SwapWord(VAR a,b: INTEGER); EXTERNAL;
PROCEDURE SwapPt(VAR a,b: Point); EXTERNAL;
PROCEDURE SwapRect(VAR a,b: Rect); EXTERNAL;
{$S }
FUNCTION KeyIsDown(keyCode: INTEGER): BOOLEAN;
VAR keys: KeyMap;
BEGIN
GetKeys(keys);
KeyIsDown := BitTst(@keys,keyCode);
END;
{$S }
PROCEDURE GetFatMouse(VAR pt: Point);
BEGIN
GetMouse(pt);
IF fatFlag THEN
BEGIN
IF theTool <> eraseTool THEN
BEGIN
pt.h := pt.h - 4; { center on pixel }
pt.v := pt.v - 4;
END;
MapPt(pt,myWind.port.portRect,fatBits.bounds);
END;
END;
{$S }
PROCEDURE GridPoint(VAR pt: Point);
BEGIN
IF gridOn AND toolGrid THEN
BEGIN
pt.h := Trunc8(pt.h + 4);
pt.v := Trunc8(pt.v + 4);
END;
END;
{$S }
PROCEDURE GetGridMouse(VAR pt: Point);
BEGIN
GetFatMouse(pt);
GridPoint(pt);
END;
{$S }
PROCEDURE PinGridMouse(VAR pt: Point);
BEGIN
GetGridMouse(pt);
PinPt(pt,myPinRect);
END;
{$S }
PROCEDURE InitConstrain(startPt: Point);
BEGIN
hConstrain := TRUE;
vConstrain := TRUE;
ptConstrain := startPt;
END;
{$S }
PROCEDURE HVConstrain(VAR newPt: Point);
VAR dh,dv: INTEGER;
BEGIN
IF shiftFlag THEN { constrain to horiz or vert }
BEGIN
IF hConstrain AND vConstrain THEN { still chosing direction }
BEGIN
dh := ABS(newPt.h-ptConstrain.h);
dv := ABS(newPt.v-ptConstrain.v);
IF (dh > dv) AND (dh > 1) THEN vConstrain := FALSE;
IF (dv > dh) AND (dv > 1) THEN hConstrain := FALSE;
END;
IF hConstrain THEN newPt.v := ptConstrain.v; { horiz }
IF vConstrain THEN newPt.h := ptConstrain.h; { vert }
END;
END;
{$S }
PROCEDURE CursorNormal;
BEGIN
InitCursor; { arrow, not hidden }
GridMouse(-1,-1,0,0); { no grid }
END;
{$S }
PROCEDURE BusyCursor;
TYPE crsrPtr = ^Cursor;
crsrHndl = ^CrsrPtr;
VAR hourGlass: crsrHndl;
BEGIN
GridMouse(-1,-1,0,0); { no grid }
cursorFlag := TRUE;
hourGlass := Pointer(ORD(GetCursor(4)));
SetCursor(hourGlass^^);
END;
{$S }
PROCEDURE SetPinRect(size: INTEGER);
VAR halfSize: INTEGER;
BEGIN
halfSize := size DIV 2;
myPinRect := myWind.port.portRect;
IF fatFlag THEN myPinRect := fatBits.bounds;
WITH myPinRect DO
BEGIN
left := left + halfSize;
top := top + halfSize;
right := right - size + halfSize;
bottom := bottom - size + halfSize;
IF gridOn AND toolGrid THEN
BEGIN
left := Trunc8(left + 7);
top := Trunc8(top + 7);
right := Trunc8(right);
bottom := Trunc8(bottom);
END;
END;
END;
{$S }
PROCEDURE SetLineSize(size: INTEGER);
BEGIN
lineSize := size;
halfLineSize := lineSize DIV 2;
SetPinRect(size);
END;
{$S }
PROCEDURE JamLine;
BEGIN
PenNormal;
PenSize(lineSize,lineSize);
IF optionFlag THEN PenPat(thePat);
IF featureFlag THEN PenMode(patOr);
END;
{$S }
PROCEDURE JamFill;
BEGIN
PenNormal;
PenPat(thePat);
IF featureFlag THEN PenMode(patOr);
END;
{$S }
PROCEDURE SetSelRect(r: Rect; newPivot: BOOLEAN);
VAR center: Point;
dstRect: Rect;
bool: BOOLEAN;
BEGIN
dstRect := myWind.port.portRect;
IF fatFlag THEN dstRect := fatBits.bounds;
bool := SectRect(r,dstRect,selRect);
center.h := (selRect.left + selRect.right) DIV 2;
center.v := (selRect.top + selRect.bottom) DIV 2;
IF newPivot THEN pivot := center;
IF NOT fatFlag THEN fatCenter := center;
END;
{$S }
PROCEDURE BandToScrn(srcBits: BitMap; top,bottom: INTEGER);
{ top and bottom are in local coords of document }
VAR shieldRect: Rect;
BEGIN
IF NOT windOpen THEN EXIT(BandToScrn);
IF fatFlag THEN
BEGIN
CopyBits(srcBits,fatBits,fatBits.bounds,fatBits.bounds,srcCopy,Nil);
FatToScrn(@fatBuf,scrnPtr);
END
ELSE
BEGIN
shieldRect := myWind.port.portRect;
shieldRect.top := top;
shieldRect.bottom := bottom;
{ calc buffer relative coords for BufToScrn }
top := top - myWind.port.portRect.top;
bottom := bottom - myWind.port.portRect.top;
IF top < 0 THEN top := 0;
IF bottom > 240 THEN bottom := 240;
ShieldCursor(shieldRect,myWind.port.portBits.bounds.topLeft);
BufToScrn(Pointer(ORD(srcBits.baseAddr)),scrnPtr,top,bottom);
ShowCursor;
END;
END;
{$S }
PROCEDURE BitsToScrn(srcBits: BitMap);
BEGIN
BandToScrn(srcBits, myWind.port.portRect.top,
myWind.port.portRect.bottom);
END;
{$S }
PROCEDURE AltToScrn;
VAR savePort: GrafPtr;
BEGIN
GetPort(savePort);
SetPort(@myWind);
SetPortBits(docBits);
BitsToScrn(altBits);
SetPort(savePort);
END;
{$S }
PROCEDURE ScrnToAlt;
BEGIN
IF fatFlag
THEN CopyBits(fatBits,altBits,fatBits.bounds,fatBits.bounds,srcCopy,Nil)
ELSE ScrnToBuf(scrnPtr,altBits.baseAddr);
END;
{$S }
PROCEDURE MaskToAlt(srcRect,dstRect: Rect; mode: INTEGER);
{ share common code }
BEGIN
maskBits.baseAddr := Pointer(ORD(maskHandle^));
CopyBits(maskBits,altBits,srcRect,dstRect,mode,Nil);
END;
{$S }
PROCEDURE MainToAlt;
VAR saveBits: BitMap;
BEGIN
BufToBuf(@mainBuf,@altBuf);
scrnFlag := FALSE;
IF whiteFlag THEN
BEGIN
IF selFlag THEN
BEGIN
saveBits := thePort^.portBits;
SetPortBits(altBits);
EraseRect(oldSelRect);
SetPortBits(saveBits);
END;
IF maskFlag THEN MaskToAlt(selRect,oldSelRect,srcBic);
END;
END;
{$S }
PROCEDURE InvertCaret;
VAR savePort: GrafPtr;
BEGIN
GetPort(savePort);
SetPort(@myWind);
IF fatFlag THEN SetPortBits(fatBits);
PenNormal;
PenMode(patXor);
MoveTo(caretLoc.h,caretLoc.v-info.ascent);
LineTo(caretLoc.h,caretLoc.v+info.descent-1);
IF fatFlag THEN FatToScrn(@fatBuf,scrnPtr);
SetPortBits(docBits);
SetPort(savePort);
caretState := NOT caretState;
END;
{$S }
PROCEDURE AcceptEdits;
BEGIN
BufToBuf(@altBuf,@mainBuf);
oldAcceptFlag := acceptFlag;
oldWhiteFlag := whiteFlag;
oldMaskFlag := maskFlag;
oldSelFlag := selFlag;
oldSelRect := selRect;
oldPivot := pivot;
oldLassoBlack := lassoBlack;
acceptFlag := FALSE;
END;
{$S }
PROCEDURE ScrollMask(dh,dv: INTEGER);
BEGIN
HLock(maskHandle);
maskBits.baseAddr := Pointer(ORD(maskHandle^));
SetPortBits(maskBits);
ScrollRect(maskBits.bounds,dh,dv,myWind.port.clipRgn);
ClipRect(pageRect);
SetPortBits(docBits);
HUnlock(maskHandle);
END;
{$S }
FUNCTION AllocMask: BOOLEAN;
BEGIN
maskHandle := NewHandle(12480);
IF maskHandle = Nil THEN
BEGIN
AllocMask := FALSE;
heapJam := TRUE;
END
ELSE
BEGIN
AllocMask := TRUE;
hLock(maskHandle);
maskBits := altBits;
maskBits.baseAddr := Pointer(ORD(maskHandle^));
END;
END;
{$S }
PROCEDURE KillMask;
BEGIN
IF maskHandle <> Nil THEN
BEGIN
DisposHandle(maskHandle);
maskHandle := Nil;
END;
maskFlag := FALSE;
oldMaskFlag := FALSE; { can't undo it }
END;
{$S }
PROCEDURE KillStuff;
VAR line: INTEGER;
BEGIN
IF txScrapHndl <> Nil THEN
BEGIN
DisposHandle(txScrapHndl);
txScrapHndl := Nil;
txScrapSize := 0;
END;
FOR line := 1 TO textLines DO
DisposHandle(Pointer(ORD(textHandles[line])));
textLines := 0;
textFlag := FALSE;
KillMask;
selFlag := FALSE;
AltToScrn; { hide selection }
END;
{$S }
PROCEDURE Undo;
BEGIN
IF textFlag OR (txScrapHndl <> Nil) THEN KillStuff;
SwapBuf(@mainBuf,@altBuf);
SwapBool(acceptFlag,oldAcceptFlag);
SwapBool(whiteFlag,oldWhiteFlag);
SwapBool(maskFlag,oldMaskFlag);
SwapBool(lassoBlack,oldLassoBlack);
SwapBool(selFlag,oldSelFlag);
SwapRect(selRect,oldSelRect);
SwapPt(pivot,oldPivot);
IF maskFlag OR oldMaskFlag THEN
BEGIN
IF NOT EqualRect(selRect,oldSelRect)
THEN ScrollMask(selRect.left-oldSelRect.left,selRect.top-oldSelRect.top);
END;
AltToScrn;
END;
{$S }
PROCEDURE Constrain(startPt: Point; VAR newPt: Point; hvOk: BOOLEAN);
VAR dh,dv,absDh,absDv,delta: INTEGER;
oldPt: Point;
BEGIN
oldPt := newPt;
dh := newPt.h - startPt.h;
dv := newPt.v - startPt.v;
absDh := ABS(dh);
absDv := ABS(dv);
delta := Min(absDh,absDv);
IF dh < 0 THEN dh := -delta ELSE dh := delta;
IF dv < 0 THEN dv := -delta ELSE dv := delta;
newPt.h := startPt.h + dh;
newPt.v := startPt.v + dv;
IF hvOK THEN
BEGIN
IF absDh > 2*absDv THEN
BEGIN
newPt.h := oldPt.h;
newPt.v := startPt.v; { horizontal }
END;
IF absDv > 2*absDh THEN
BEGIN
newPt.h := startPt.h; { vertical }
newPt.v := oldPt.v;
END;
END;
END;
{$S }
PROCEDURE CreateShape(shape: ShapeCode; filled: BOOLEAN);
VAR startPt,newPt,oldPt: Point;
dstRect: Rect;
BEGIN
JamLine;
PinGridMouse(startPt);
dstRect.topLeft := startPt;
dstRect.botRight := startPt;
oldPt.h := 1000; { fake out first time }
WHILE StillDown DO
BEGIN
PinGridMouse(newPt);
IF shiftFlag THEN Constrain(startPt,newPt,FALSE); { drag square }
IF NOT EqualPt(newPt,oldPt) THEN
BEGIN
MainToAlt;
Pt2Rect(startPt,newPt,dstRect);
WITH dstRect DO
BEGIN
left := left - halfLineSize;
top := top - halfLineSize;
right := right + lineSize - halfLineSize;
bottom := bottom + lineSize - halfLineSize;
END;
SetPortBits(altBits);
IF filled THEN
BEGIN
JamFill;
CASE shape OF
rectShape: PaintRect(dstRect);
rRectShape: PaintRoundRect(dstRect,corner,corner);
ovalShape: PaintOval(dstRect);
END;
END;
IF borderFlag OR NOT filled THEN
BEGIN
JamLine;
CASE shape OF
rectShape: FrameRect(dstRect);
rRectShape: FrameRoundRect(dstRect,corner,corner);
ovalShape: FrameOval(dstRect);
END;
END;
AltToScrn; { returns to docBits }
oldPt:=newPt;
END;
END;
END;
{$S SegPrint }
FUNCTION PrintRect(srcBits: BitMap; srcRect: Rect): BOOLEAN;
VAR event: EventRecord;
saveOrigin: Point;
theControl: ControlHandle;
BEGIN
PrintRect := TRUE;
PrCtlCall(iPrBitsCtl,ORD(@srcBits),ORD(@srcRect),lPaintBits+2*ORD(hiResFlag));
{ check for cancel button }
IF GetNextEvent(everyEvent,event) AND (event.what = mouseDown) THEN
BEGIN
saveOrigin := myWind.port.portRect.topLeft;
SetOrigin(0,0);
GlobalToLocal(event.where);
IF FindControl(event.where,@myWind,theControl) = 0 THEN SystemBeep(8)
ELSE IF TrackControl(theControl,event.where,Nil) <> 0 THEN
BEGIN
PrintRect := FALSE;
SetOrigin(saveOrigin.h,saveOrigin.v);
EXIT(PrintRect);
END;
SetOrigin(saveOrigin.h,saveOrigin.v);
END;
END;
{$S }
PROCEDURE PatchText(count: INTEGER; textPtr: QDPtr; numer,denom: Point);
{ draw text in chunks to cut stack needs, preventing croak }
VAR myCount: INTEGER;
BEGIN
WHILE count > 0 DO
BEGIN
myCount := Min(count,txMaxCount);
StdText(myCount,textPtr,numer,denom);
textPtr := Pointer(ORD(textPtr) + myCount);