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UInternal.inc1.p
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UInternal.inc1.p
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{Photoshop version 1.0.1, file: UInternal.inc1.p
Computer History Museum, www.computerhistory.org
This material is (C)Copyright 1990 Adobe Systems Inc.
It may not be distributed to third parties.
It is licensed for non-commercial use according to
www.computerhistory.org/softwarelicense/photoshop/ }
{$I UAssembly.a.inc}
{$I UGhost.p.inc}
{$I UScreen.p.inc}
CONST
kFileVersion1 = 119;
kFileVersion = 120;
kModeVersion1 = 106;
kModeVersion2 = 115;
kRsrcKind = kFileType;
kImageSizeInfoID = 1000;
kPrintInfoID = 1001;
kImageStyleInfoID = 1002;
kIndexedColorTableID = 1003;
kMultidiskStampID = 1004;
kMultidiskInitial = '8BMD';
kMultidiskContinued = '8BMC';
TYPE
{ Basic image information, stored as resource in image file }
TImageSizeInfo = RECORD
fChannels: INTEGER;
fRows : INTEGER;
fCols : INTEGER;
fDepth : INTEGER;
fMode : INTEGER
END;
PImageSizeInfo = ^TImageSizeInfo;
HImageSizeInfo = ^PImageSizeInfo;
{ Image style information, stored as resource in image file }
TImageStyleInfo = RECORD
fVersion: INTEGER;
CASE INTEGER OF
0: (fMode: INTEGER);
1: (fStyleInfo: TStyleInfo);
END;
PImageStyleInfo = ^TImageStyleInfo;
HImageStyleInfo = ^PImageStyleInfo;
VAR
gName: STRING [63];
gStamp: TMultidiskStamp;
{*****************************************************************************}
{$S AInit}
PROCEDURE TInternalFormat.IImageFormat; OVERRIDE;
BEGIN
INHERITED IImageFormat;
fCanRead := TRUE;
fReadType1 := kFileType;
fReadType2 := kMultidiskInitial;
fUsesDataFork := TRUE;
fUsesRsrcFork := TRUE
END;
{*****************************************************************************}
{$S AWriteFile}
FUNCTION TInternalFormat.CanWrite (doc: TImageDocument): BOOLEAN; OVERRIDE;
BEGIN
CanWrite := TRUE
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.ReadPart (doc: TImageDocument);
VAR
size: LONGINT;
count: INTEGER;
vRefNum: INTEGER;
BEGIN
MoveHands (TRUE);
FailOSErr (GetVRefNum (fRefNum, vRefNum));
fLastVRefNum := vRefNum;
FailOSErr (GetEOF (fRefNum, size));
IF size MOD doc.fData [0] . fLogicalSize <> 0 THEN
Failure (errBadInternal, 0);
size := size DIV doc.fData [0] . fLogicalSize;
WHILE size > 0 DO
BEGIN
IF fChannel = doc.fChannels THEN
Failure (errBadInternal, 0);
count := Min (size, doc.fRows - fRow);
StartTask (count / size);
GetRawRows (doc.fData [fChannel],
doc.fData [fChannel] . fLogicalSize,
fRow, count, TRUE);
FinishTask;
size := size - count;
fRow := fRow + count;
IF fRow = doc.fRows THEN
BEGIN
fRow := 0;
fChannel := fChannel + 1
END
END
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.DoRead (doc: TImageDocument;
refNum: INTEGER;
rsrcExists: BOOLEAN); OVERRIDE;
VAR
srcPtr: Ptr;
channel: INTEGER;
aVMArray: TVMArray;
logicalSize: INTEGER;
stamp: HMultidiskStamp;
imageSizeInfo: HImageSizeInfo;
imageStyleInfo: HImageStyleInfo;
indexedColorTable: HRGBLookUpTable;
PROCEDURE GetSpot (VAR spec: THalftoneSpec);
VAR
count: LONGINT;
BEGIN
count := -spec.shape;
IF count > 0 THEN
BEGIN
spec.spot := NewPermHandle (count);
FailNil (spec.spot);
RegisterSpot (spec.spot);
BlockMove (srcPtr, spec.spot^, count);
srcPtr := Ptr (ORD4 (srcPtr) + count)
END
END;
BEGIN
MoveHands (NOT doc.fReverting);
fRefNum := refNum;
IF NOT rsrcExists THEN Failure (errBadInternal, 0);
imageSizeInfo := HImageSizeInfo
(Get1Resource (kRsrcKind, kImageSizeInfoID));
IF imageSizeInfo = NIL THEN Failure (errBadInternal, 0);
IF GetHandleSize (Handle (imageSizeInfo)) >= 8 THEN
BEGIN
doc.fChannels := imageSizeInfo^^.fChannels;
doc.fRows := imageSizeInfo^^.fRows;
doc.fCols := imageSizeInfo^^.fCols;
doc.fDepth := imageSizeInfo^^.fDepth
END
ELSE
Failure (errBadInternal, 0);
IF NOT doc.ValidSize THEN Failure (errBadInternal, 0);
IF GetHandleSize (Handle (imageSizeInfo)) >= 10 THEN
doc.fMode := TDisplayMode (imageSizeInfo^^.fMode)
ELSE
doc.DefaultMode;
ReleaseResource (Handle (imageSizeInfo));
doc.fPrintInfo := Get1Resource (kRsrcKind, kPrintInfoID);
IF doc.fPrintInfo <> NIL THEN DetachResource (doc.fPrintInfo);
indexedColorTable := HRGBLookUpTable
(Get1Resource (kRsrcKind, kIndexedColorTableID));
if indexedColorTable <> NIL THEN
BEGIN
IF GetHandleSize (Handle (indexedColorTable)) =
SIZEOF (TRGBLookUpTable) THEN
BEGIN
doc.fMode := IndexedColorMode;
doc.fIndexedColorTable := indexedColorTable^^;
doc.TestColorTable
END;
ReleaseResource (Handle (indexedColorTable))
END;
imageStyleInfo := HImageStyleInfo
(Get1Resource (kRsrcKind, kImageStyleInfoID));
IF imageStyleInfo <> NIL THEN
BEGIN
HLock (Handle (imageStyleInfo));
IF GetHandleSize (Handle (imageStyleInfo)) >= SIZEOF (INTEGER) THEN
WITH imageStyleInfo^^ DO
BEGIN
IF (fVersion >= kModeVersion1) AND
(fVersion <= kModeVersion2) THEN
doc.fMode := TDisplayMode (fMode);
IF (fVersion = kFileVersion1) OR
(fVersion = kFileVersion) THEN
BEGIN
srcPtr := Ptr (ORD4 (imageStyleInfo^) +
SIZEOF (TImageStyleInfo));
GetSpot (fStyleInfo.fHalftoneSpec);
GetSpot (fStyleInfo.fHalftoneSpecs[0]);
GetSpot (fStyleInfo.fHalftoneSpecs[1]);
GetSpot (fStyleInfo.fHalftoneSpecs[2]);
GetSpot (fStyleInfo.fHalftoneSpecs[3]);
doc.fStyleInfo := fStyleInfo;
IF fVersion = kFileVersion1 THEN
IF doc.fMode = SeparationsCMYK THEN
doc.fStyleInfo.fGamma := 100
END
END;
ReleaseResource (Handle (imageStyleInfo))
END;
IF (doc.fDepth = 1) <> (doc.fMode = HalftoneMode) THEN
Failure (errBadInternal, 0);
IF (doc.fChannels > 1) AND ((doc.fMode = MonochromeMode) OR
(doc.fMode = IndexedColorMode)) THEN
Failure (errBadInternal, 0);
IF doc.fChannels < doc.Interleave (0) THEN
Failure (errBadInternal, 0);
IF (doc.fChannels = 1) AND (doc.fMode = MultichannelMode) THEN
Failure (errBadInternal, 0);
stamp := HMultidiskStamp (Get1Resource (kRsrcKind, kMultidiskStampID));
IF stamp = NIL THEN
fMultidisk := FALSE
ELSE
BEGIN
fMultidisk := TRUE;
IF GetHandleSize (Handle (stamp)) <> SIZEOF (TMultidiskStamp) THEN
Failure (errBadInternal, 0);
fStamp := stamp^^;
ReleaseResource (Handle (stamp))
END;
IF doc.fDepth = 1 THEN
logicalSize := BSL (BSR (doc.fCols + 15, 4), 1)
ELSE
logicalSize := doc.fCols;
FOR channel := 0 TO doc.fChannels - 1 DO
BEGIN
aVMArray := NewVMArray (doc.fRows,
logicalSize,
doc.Interleave (channel));
doc.fData [channel] := aVMArray
END;
IF fMultidisk THEN
BEGIN
fRow := 0;
fChannel := 0;
ReadPart (doc)
END
ELSE
BEGIN
IF GetFileLength = 0 THEN
Failure (errEmptyFile, 0);
FOR channel := 0 TO doc.fChannels - 1 DO
BEGIN
StartTask (1 / (doc.fChannels - channel));
GetRawRows (doc.fData [channel],
doc.fData [channel] . fLogicalSize,
0, doc.fRows,
NOT doc.fReverting);
FinishTask
END
END
END;
{*****************************************************************************}
{$S AInternal}
FUNCTION ReadNextHook (item: INTEGER; theDialog: DialogPtr): INTEGER;
CONST
kPromptItem = 11;
VAR
s: Str255;
ss: Str255;
itemBox: Rect;
index: INTEGER;
itemType: INTEGER;
itemHandle: Handle;
BEGIN
ReadNextHook := item;
IF item = -1 THEN
BEGIN
NumToString (gStamp.fPart, ss);
GetDItem (theDialog, kPromptItem, itemType, itemHandle, itemBox);
GetIText (itemHandle, s);
FOR index := 1 TO LENGTH (s) DO
IF s [index] = '%' THEN
BEGIN
DELETE (s, index, 1);
INSERT (ss, s, index);
LEAVE
END;
FOR index := 1 TO LENGTH (s) DO
IF s [index] = '%' THEN
BEGIN
DELETE (s, index, 1);
INSERT (gName, s, index);
LEAVE
END;
SetIText (itemHandle, s)
END
END;
{*****************************************************************************}
{$S AInternal}
FUNCTION ReadNextFilter (paramBlock: CInfoPBPtr): BOOLEAN;
VAR
err: OSErr;
wd: WDPBRec;
mfs: BOOLEAN;
name: Str255;
stamp: Handle;
refNum: INTEGER;
vRefNum: INTEGER;
saveVol: INTEGER;
pb: HParamBlockRec;
BEGIN
ReadNextFilter := TRUE;
name := paramBlock^.ioNamePtr^;
vRefNum := paramBlock^.ioVRefNum;
pb.ioNamePtr := NIL;
pb.ioVRefNum := vRefNum;
pb.ioVolIndex := 0;
IF PBHGetVInfo (@pb, FALSE) <> noErr THEN
EXIT (ReadNextFilter);
mfs := (pb.ioVSigWord = $D2D7);
IF GetVol (NIL, saveVol) = noErr THEN
BEGIN
IF mfs THEN
err := SetVol (NIL, vRefNum)
ELSE
BEGIN
wd.ioNamePtr := NIL;
wd.ioVRefNum := vRefNum;
wd.ioWDDirID := paramBlock^.ioFlParID;
err := PBHSetVol (@wd, FALSE)
END;
IF err = noErr THEN
BEGIN
refNum := OpenResFile (name);
IF refNum <> -1 THEN
BEGIN
stamp := Get1Resource (kRsrcKind, kMultidiskStampID);
IF stamp <> NIL THEN
IF EqualBytes (stamp^, @gStamp,
SIZEOF (TMultidiskStamp)) THEN
ReadNextFilter := FALSE;
CloseResFile (refNum)
END;
err := SetVol (NIL, saveVol)
END
END
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.ReadNext (doc: TImageDocument; name: Str255);
CONST
kGetPartID = 1403;
VAR
s: Str255;
ss: Str255;
fi: FailInfo;
where: Point;
reply: SFReply;
refNum: INTEGER;
typeList: SFTypeList;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
VAR
ignore: OSErr;
BEGIN
FinishProgress;
ignore := FSClose (refNum)
END;
BEGIN
fStamp.fPart := fStamp.fPart + 1;
gName := name;
gStamp := fStamp;
EjectLastVolume;
WhereToPlaceDialog (kGetPartID, where);
typeList [0] := kMultidiskContinued;
SFPGetFile (where, '', @ReadNextFilter, 1, typeList,
@ReadNextHook, reply, kGetPartID, NIL);
IF NOT reply.good THEN Failure (0, 0);
MoveGhostsForward;
FailOSErr (FSOpen (reply.fName, reply.vRefNum, refNum));
GetIndString (s, kStringsID, strReadingPart);
NumToString (fStamp.fPart, ss);
INSERT (ss, s, LENGTH (s) + 1);
StartProgress (s);
CatchFailures (fi, CleanUp);
fRefNum := refNum;
ReadPart (doc);
Success (fi);
FinishProgress;
FailOSErr (FSClose (refNum))
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.ReadOther
(doc: TImageDocument; name: Str255); OVERRIDE;
BEGIN
IF fMultidisk THEN
BEGIN
doc.fSaveExists := FALSE;
WHILE fChannel < doc.fChannels DO
ReadNext (doc, name);
EjectLastVolume
END
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.AboutToSave (doc: TImageDocument;
itsCmd: INTEGER;
VAR name: Str255;
VAR vRefNum: INTEGER;
VAR makingCopy: BOOLEAN); OVERRIDE;
CONST
kSaveMultidiskID = 926;
VAR
blkSize: LONGINT;
freeBlks: LONGINT;
pb: HParamBlockRec;
neededBlks: LONGINT;
rsrcForkSize: LONGINT;
BEGIN
fMultidisk := FALSE;
IF itsCmd = cSaveAs THEN
BEGIN
pb.ioNamePtr := NIL;
pb.ioVRefNum := vRefNum;
pb.ioVolIndex := 0;
FailOSErr (PBHGetVInfo (@pb, FALSE));
blkSize := pb.ioVAlBlkSiz;
freeBlks := BAND (pb.ioVFrBlk, $0FFFF) - 1;
IF GetFileInfo (name, vRefNum, pb) = noErr THEN
freeBlks := freeBlks + NumBlocks (pb.ioFlRPyLen, blkSize) +
NumBlocks (pb.ioFlPyLen , blkSize);
rsrcForkSize := RsrcForkBytes (doc);
IF doc.fMiscResources <> NIL THEN
MiscResourcesBytes (doc, rsrcForkSize);
neededBlks := NumBlocks (DataForkBytes (doc), blkSize) +
NumBlocks (rsrcForkSize , blkSize);
IF (neededBlks > freeBlks) AND (freeBlks * blkSize >= $10000) THEN
BEGIN
IF BWAlert (kSaveMultidiskID, 0, TRUE) <> ok THEN
Failure (0, 0);
fMultidisk := TRUE;
makingCopy := TRUE
END
END;
IF fMultidisk THEN
fFileType := kMultidiskInitial
ELSE
fFileType := kFileType
END;
{*****************************************************************************}
{$S AInternal}
FUNCTION TInternalFormat.DataForkBytes
(doc: TImageDocument): LONGINT; OVERRIDE;
BEGIN
IF fMultidisk THEN
DataForkBytes := 0
ELSE
DataForkBytes := doc.fRows *
ORD4 (doc.fData [0] . fLogicalSize) *
doc.fChannels
END;
{*****************************************************************************}
{$S AInternal}
FUNCTION TInternalFormat.SpotBytes (doc: TImageDocument): LONGINT;
VAR
j: INTEGER;
bytes: LONGINT;
BEGIN
bytes := Max (0, -doc.fStyleInfo.fHalftoneSpec.shape);
FOR j := 0 TO 3 DO
bytes := bytes + Max (0, -doc.fStyleInfo.fHalftoneSpecs[j].shape);
SpotBytes := bytes
END;
{*****************************************************************************}
{$S AInternal}
FUNCTION TInternalFormat.RsrcForkBytes
(doc: TImageDocument): LONGINT; OVERRIDE;
VAR
bytes: LONGINT;
BEGIN
bytes := kRsrcTypeOverhead + 2 * kRsrcOverhead +
SIZEOF (TImageSizeInfo) +
SIZEOF (TImageStyleInfo) + SpotBytes (doc);
IF doc.fMode = IndexedColorMode THEN
bytes := bytes + kRsrcOverhead + SIZEOF (TRGBLookUpTable);
IF doc.fPrintInfo <> NIL THEN
bytes := bytes + kRsrcOverhead + GetHandleSize (doc.fPrintInfo);
IF fMultidisk THEN
bytes := bytes + kRsrcOverhead + SIZEOF (TMultidiskStamp);
RsrcForkBytes := bytes
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.AddResources (doc: TImageDocument);
VAR
dstPtr: Ptr;
printInfo: Handle;
imageSizeInfo: HImageSizeInfo;
imageStyleInfo: HImageStyleInfo;
indexedColorTable: HRGBLookUpTable;
PROCEDURE AddSpot (spec: THalftoneSpec);
VAR
count: LONGINT;
BEGIN
count := -spec.shape;
IF count > 0 THEN
BEGIN
BlockMove (spec.spot^, dstPtr, count);
dstPtr := Ptr (ORD4 (dstPtr) + count)
END
END;
BEGIN
imageSizeInfo := HImageSizeInfo (NewHandle (SIZEOF (TImageSizeInfo)));
FailMemError;
imageSizeInfo^^.fChannels := doc.fChannels;
imageSizeInfo^^.fRows := doc.fRows;
imageSizeInfo^^.fCols := doc.fCols;
imageSizeInfo^^.fDepth := doc.fDepth;
imageSizeInfo^^.fMode := ORD (doc.fMode);
AddResource (Handle (imageSizeInfo), kRsrcKind, kImageSizeInfoID, '');
FailResError;
IF doc.fPrintInfo <> NIL THEN
BEGIN
printInfo := doc.fPrintInfo;
FailOSErr (HandToHand (printInfo));
AddResource (printInfo, kRsrcKind, kPrintInfoID, '');
FailResError
END;
imageStyleInfo := HImageStyleInfo
(NewHandle (SIZEOF (TImageStyleInfo) +
SpotBytes (doc)));
FailMemError;
WITH imageStyleInfo^^ DO
BEGIN
fVersion := kFileVersion;
fStyleInfo := doc.fStyleInfo
END;
dstPtr := Ptr (ORD4 (imageStyleInfo^) + SIZEOF (TImageStyleInfo));
AddSpot (doc.fStyleInfo.fHalftoneSpec);
AddSpot (doc.fStyleInfo.fHalftoneSpecs[0]);
AddSpot (doc.fStyleInfo.fHalftoneSpecs[1]);
AddSpot (doc.fStyleInfo.fHalftoneSpecs[2]);
AddSpot (doc.fStyleInfo.fHalftoneSpecs[3]);
AddResource (Handle (imageStyleInfo), kRsrcKind, kImageStyleInfoID, '');
FailResError;
IF doc.fMode = IndexedColorMode THEN
BEGIN
indexedColorTable := HRGBLookUpTable
(NewHandle (SIZEOF (TRGBLookUpTable)));
FailMemError;
indexedColorTable^^ := doc.fIndexedColorTable;
AddResource (Handle (indexedColorTable), kRsrcKind,
kIndexedColorTableID, '');
FailResError
END
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.AddStamp;
VAR
stamp: HMultidiskStamp;
BEGIN
stamp := HMultidiskStamp (NewHandle (SIZEOF (TMultidiskStamp)));
FailMemError;
stamp^^ := fStamp;
AddResource (Handle (stamp), kRsrcKind, kMultidiskStampID, '');
FailResError
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.FillUpDisk (doc: TImageDocument);
VAR
count: INTEGER;
vRefNum: INTEGER;
freeRows: LONGINT;
needRows: LONGINT;
pb: HParamBlockRec;
freeBytes: LONGINT;
BEGIN
MoveHands (FALSE);
FailOSErr (GetVRefNum (fRefNum, vRefNum));
fLastVRefNum := vRefNum;
pb.ioNamePtr := NIL;
pb.ioVRefNum := vRefNum;
pb.ioVolIndex := 0;
FailOSErr (PBHGetVInfo (@pb, FALSE));
freeBytes := (BAND ($0FFFF, pb.ioVFrBlk) - 1) * pb.ioVAlBlkSiz - $2000;
freeRows := freeBytes DIV doc.fData [0] . fLogicalSize;
IF freeRows <= 0 THEN Failure (dskFulErr, 0);
needRows := doc.fRows - fRow;
IF fChannel < doc.fChannels - 1 THEN
needRows := needRows +
ORD4 (doc.fChannels - 1 - fChannel) * doc.fRows;
freeRows := Min (freeRows, needRows);
WHILE fChannel < doc.fChannels DO
BEGIN
count := Min (doc.fRows - fRow, freeRows);
IF count = 0 THEN EXIT (FillUpDisk);
StartTask (count / freeRows);
PutRawRows (doc.fData [fChannel],
doc.fData [fChannel] . fLogicalSize,
fRow, count);
FinishTask;
freeRows := freeRows - count;
fRow := fRow + count;
IF fRow = doc.fRows THEN
BEGIN
fRow := 0;
fChannel := fChannel + 1
END
END
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.DoWrite
(doc: TImageDocument; refNum: INTEGER); OVERRIDE;
VAR
secs: LONGINT;
channel: INTEGER;
BEGIN
fRefNum := refNum;
MoveHands (FALSE);
AddResources (doc);
IF fMultidisk THEN
BEGIN
GetDateTime (secs);
fStamp.fName := doc.fTitle;
fStamp.fDate := secs;
fStamp.fTime := TickCount;
fStamp.fPart := 1;
AddStamp;
fRow := 0;
fChannel := 0;
FillUpDisk (doc)
END
ELSE
FOR channel := 0 TO doc.fChannels - 1 DO
BEGIN
StartTask (1 / (doc.fChannels - channel));
PutRawRows (doc.fData [channel],
doc.fData [channel] . fLogicalSize,
0, doc.fRows);
FinishTask
END
END;
{*****************************************************************************}
{$S AInternal}
PROCEDURE TInternalFormat.EjectLastVolume;
CONST
kEjectSizeLimit = $500000;
VAR
err: OSErr;
dq: DrvQElPtr;
size: LONGINT;
flags: INTEGER;
vRefNum: INTEGER;
pb: HParamBlockRec;
BEGIN
IF fLastVRefNum = 0 THEN EXIT (EjectLastVolume);
pb.ioNamePtr := NIL;
pb.ioVRefNum := fLastVRefNum;
pb.ioVolIndex := 0;
IF PBHGetVInfo (@pb, FALSE) = noErr THEN
BEGIN
size := BAND (pb.ioVNmAlBlks, $0FFFF) * pb.ioVAlBlkSiz;
IF (size > 0) AND (size <= kEjectSizeLimit) THEN
BEGIN
dq := DrvQElPtr (GetDrvQHdr^.QHead);
WHILE (dq <> NIL) & (dq^.dQDrive <> pb.ioVDrvInfo) DO
dq := DrvQElPtr (dq^.qLink);
IF dq <> NIL THEN
BEGIN
flags := BAND ($FF, Ptr (ORD4 (dq) - 3)^);