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UEPSFormat.inc1.p
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UEPSFormat.inc1.p
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{Photoshop version 1.0.1, file: UEPSFormat.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 UConvert.p.inc}
{$I UPostScript.a.inc}
{$I UResize.p.inc}
{*****************************************************************************}
{$S AInit}
PROCEDURE TEPSFormat.IImageFormat; OVERRIDE;
BEGIN
INHERITED IImageFormat;
fCanRead := TRUE;
fReadType1 := 'EPSF';
fReadType2 := ' ';
fReadType3 := ' ';
fFileType := 'EPSF';
fUsesDataFork := TRUE;
fUsesRsrcFork := TRUE;
fSystemPalette := TRUE;
fHalftonePreview := 1;
fOtherPreview := 1;
fBinary := FALSE;
fFiveFiles := FALSE;
fTransparent := FALSE;
fIncludeScreen := FALSE;
fIncludeTransfer := FALSE;
fFTypeItem := 0;
fFCreatorItem := 0;
fCheck1Item := 9;
fCheck2Item := 10;
fCheck3Item := 11;
fRadioClusters := 2;
fRadio1Item := 4;
fRadio1Count := 3;
fRadio2Item := 7;
fRadio2Count := 2;
fInts := 0;
fStrs := 0
END;
{*****************************************************************************}
{$S AWriteFile}
FUNCTION TEPSFormat.CanWrite (doc: TImageDocument): BOOLEAN; OVERRIDE;
BEGIN
CanWrite := doc.fMode IN [HalftoneMode,
MonochromeMode,
IndexedColorMode,
RGBColorMode,
SeparationsCMYK,
MultichannelMode]
END;
{*****************************************************************************}
{$S AEPSFormat}
PROCEDURE TEPSFormat.SetFormatOptions (doc: TImageDocument); OVERRIDE;
BEGIN
CASE doc.fMode OF
HalftoneMode:
fDialogID := 3100;
MonochromeMode,
MultichannelMode:
fDialogID := 3101;
IndexedColorMode,
RGBColorMode:
fDialogID := 3102;
SeparationsCMYK:
fDialogID := 3103
END;
IF doc.fMode = HalftoneMode THEN
BEGIN
fCheckBoxes := 1;
fCheck1 := fTransparent;
fRadio1 := fHalftonePreview
END
ELSE
BEGIN
IF doc.fMode = SeparationsCMYK THEN
fCheckboxes := 3
ELSE
fCheckboxes := 2;
fCheck1 := fIncludeScreen;
fCheck2 := fIncludeTransfer;
fCheck3 := fFiveFiles;
fRadio1 := fOtherPreview
END;
fRadio2 := ORD (fBinary);
DoOptionsDialog;
IF doc.fMode = HalftoneMode THEN
BEGIN
fTransparent := fCheck1;
fHalftonePreview := fRadio1
END
ELSE
BEGIN
fIncludeScreen := fCheck1;
fIncludeTransfer := fCheck2;
fFiveFiles := fCheck3;
fOtherPreview := fRadio1
END;
IF fRadio1 = 2 THEN
fDepth := 8
ELSE
fDepth := fRadio1;
fBinary := (fRadio2 <> 0);
fUsesRsrcFork := (fDepth <> 0)
END;
{*****************************************************************************}
{$S AEPSFormat}
PROCEDURE TEPSFormat.GetLine (VAR s: Str255);
VAR
pb: ParamBlockRec;
BEGIN
pb.ioRefNum := fRefNum;
pb.ioBuffer := @s[1];
pb.ioReqCount := 255;
pb.ioPosMode := $0D80 + fsAtMark;
pb.ioPosOffset := 0;
FailOSErr (PBRead (@pb, FALSE));
BlockMove (Ptr (ORD4 (@pb.ioActCount) + 3), @s, 1);
IF s [LENGTH (s)] <> CHR ($D) THEN Failure (errBadEPSF, 0);
DELETE (s, LENGTH (s), 1)
END;
{*****************************************************************************}
{$IFC qTrace} {$D+} {$ENDC}
{$S AEPSFormat}
PROCEDURE TEPSFormat.ReadImageData (doc: TImageDocument;
binary: BOOLEAN;
first: INTEGER;
count: INTEGER;
alpha: INTEGER;
invert: BOOLEAN);
CONST
kBufferSize = 32768;
VAR
dstPtr: Ptr;
fi: FailInfo;
row: INTEGER;
buffer: Handle;
channel: INTEGER;
rowBytes: INTEGER;
fileBytes: LONGINT;
table: TLookUpTable;
bufferUsed: LONGINT;
bufferBytes: LONGINT;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
BEGIN
FreeLargeHandle (buffer)
END;
PROCEDURE LoadBytes (n: LONGINT; p: Ptr);
VAR
count: LONGINT;
BEGIN
IF NOT binary THEN
n := BSL (n, 1);
WHILE n > 0 DO
BEGIN
IF bufferUsed = bufferBytes THEN
BEGIN
bufferUsed := 0;
bufferBytes := Min (kBufferSize, fileBytes);
IF bufferBytes <= 0 THEN Failure (errBadEPSF, 0);
fileBytes := fileBytes - bufferBytes;
GetBytes (bufferBytes, buffer^)
END;
IF binary THEN
BEGIN
count := Min (bufferBytes - bufferUsed, n);
BlockMove (Ptr (ORD4 (buffer^) + bufferUsed), p, count);
n := n - count;
p := Ptr (ORD4 (p) + count);
bufferUsed := bufferUsed + count
END
ELSE
BEGIN
count := bufferBytes - bufferUsed;
DeHexBytes (Ptr (ORD4 (buffer^) + bufferUsed),
count, p, n, table);
bufferUsed := bufferBytes - count
END
END
END;
BEGIN
IF doc.fDepth = 1 THEN
rowBytes := (doc.fCols + 7) DIV 8
ELSE
rowBytes := doc.fCols;
buffer := NewLargeHandle (kBufferSize);
MoveHHi (buffer);
HLock (buffer);
CatchFailures (fi, CleanUp);
fileBytes := GetFileLength - GetFilePosition;
bufferUsed := 0;
bufferBytes := 0;
IF NOT binary THEN
FOR row := 0 TO 255 DO
IF CHR (row) IN ['0'..'9'] THEN
table [row] := CHR (row - ORD ('0'))
ELSE IF CHR (row) IN ['A'..'F'] THEN
table [row] := CHR (row + 10 - ORD ('A'))
ELSE IF CHR (row) IN ['a'..'f'] THEN
table [row] := CHR (row + 10 - ORD ('a'))
ELSE
table [row] := CHR (255);
FOR row := 0 TO doc.fRows - 1 DO
BEGIN
MoveHands (NOT doc.fReverting);
UpdateProgress (row, doc.fRows);
FOR channel := first TO first + count - 1 DO
BEGIN
dstPtr := doc.fData [channel] . NeedPtr (row, row, TRUE);
LoadBytes (rowBytes, dstPtr);
IF invert THEN
DoMapBytes (dstPtr, rowBytes, gInvertLUT);
doc.fData [channel] . DoneWithPtr
END;
FOR channel := 1 TO alpha DO
LoadBytes (rowBytes, gBuffer)
END;
UpdateProgress (1, 1);
FOR channel := first TO first + count - 1 DO
doc.fData [channel] . Flush;
Success (fi);
CleanUp (0, 0)
END;
{$IFC qTrace} {$D++} {$ENDC}
{*****************************************************************************}
{$S AEPSFormat}
PROCEDURE TEPSFormat.ParseHeader (doc: TImageDocument;
VAR binary: BOOLEAN;
VAR cPlate: Str255;
VAR mPlate: Str255;
VAR yPlate: Str255;
VAR kPlate: Str255;
dcsPlate: BOOLEAN);
VAR
s: Str255;
x1: INTEGER;
x2: INTEGER;
y1: INTEGER;
y2: INTEGER;
key: Str255;
res: EXTENDED;
index: INTEGER;
which: INTEGER;
width: LONGINT;
height: LONGINT;
blockSize: INTEGER;
hSpec: THalftoneSpec;
tSpec: TTransferSpec;
haveResolution: BOOLEAN;
FUNCTION NextChar: CHAR;
BEGIN
IF index <= LENGTH (s) THEN
NextChar := s [index]
ELSE
NextChar := CHR ($D)
END;
PROCEDURE SkipWhite;
BEGIN
WHILE (NextChar = ' ') OR (NextChar = CHR (9)) DO
index := index + 1
END;
FUNCTION ParseInteger: LONGINT;
VAR
x: LONGINT;
negative: BOOLEAN;
BEGIN
x := 0;
SkipWhite;
negative := NextChar = '-';
IF negative THEN index := index + 1;
WHILE (NextChar IN ['0'..'9']) DO
BEGIN
x := x * 10 + ORD (NextChar) - ORD ('0');
index := index + 1
END;
IF negative THEN x := -x;
ParseInteger := x
END;
FUNCTION ParseRange (lower, upper: LONGINT): LONGINT;
BEGIN
ParseRange := Max (lower, Min (upper, ParseInteger))
END;
BEGIN
cPlate := '';
mPlate := '';
yPlate := '';
kPlate := '';
width := 0;
height := 0;
doc.fRows := 0;
doc.fCols := 0;
haveResolution := FALSE;
REPEAT
MoveHands (NOT doc.fReverting);
GetLine (s);
IF POS ('%%BoundingBox:', s) = 1 THEN
BEGIN
index := 15;
x1 := ParseInteger;
y1 := ParseInteger;
x2 := ParseInteger;
y2 := ParseInteger;
width := Max (0, x2 - x1);
height := Max (0, y2 - y1)
END;
IF POS ('%%CyanPlate: ', s) = 1 THEN
BEGIN
cPlate := s;
DELETE (cPlate, 1, 13)
END;
IF POS ('%%MagentaPlate: ', s) = 1 THEN
BEGIN
mPlate := s;
DELETE (mPlate, 1, 16)
END;
IF POS ('%%YellowPlate: ', s) = 1 THEN
BEGIN
yPlate := s;
DELETE (yPlate, 1, 15)
END;
IF POS ('%%BlackPlate: ', s) = 1 THEN
BEGIN
kPlate := s;
DELETE (kPlate, 1, 14)
END;
IF POS ('%ImageData:', s) = 1 THEN
BEGIN
index := 12;
doc.fCols := ParseInteger;
doc.fRows := ParseInteger;
doc.fDepth := ParseInteger;
IF (doc.fDepth <> 1) AND
(doc.fDepth <> 8) THEN Failure (errBadEPSF, 0);
doc.fChannels := ParseInteger;
CASE doc.fChannels OF
1: BEGIN
IF doc.fDepth = 1 THEN
doc.fMode := HalftoneMode
ELSE
doc.fMode := MonochromeMode;
IF ParseInteger <> 0 THEN Failure (errBadEPSF, 0)
END;
3: BEGIN
doc.fMode := RGBColorMode;
IF ParseInteger <> 1 THEN Failure (errBadEPSF, 0)
END;
4: BEGIN
doc.fMode := SeparationsCMYK;
IF ParseInteger <> 1 THEN Failure (errBadEPSF, 0)
END;
OTHERWISE
Failure (errBadEPSF, 0)
END;
IF doc.fDepth = 1 THEN
blockSize := (doc.fCols + 7) DIV 8
ELSE
blockSize := doc.fCols;
IF ParseInteger <> blockSize THEN Failure (errBadEPSF, 0);
CASE ParseInteger OF
1: binary := TRUE;
2: binary := FALSE;
OTHERWISE
Failure (errBadEPSF, 0)
END;
SkipWhite;
IF NextChar <> '"' THEN Failure (errBadEPSF, 0);
index := index + 1;
key := '';
WHILE NextChar <> '"' DO
BEGIN
IF NextChar = CHR ($D) THEN Failure (errBadEPSF, 0);
INSERT (' ', key, LENGTH (key) + 1);
key [LENGTH (key)] := NextChar;
index := index + 1
END;
IF LENGTH (key) = 0 THEN Failure (errBadEPSF, 0)
END;
IF POS ('%ImageStyle:', s) = 1 THEN
BEGIN
index := 13;
which := ParseInteger;
CASE which OF
1: BEGIN
doc.fStyleInfo.fResolution.value := Max (1, ParseInteger);
doc.fStyleInfo.fResolution.scale := ParseRange (1, 2);
doc.fStyleInfo.fWidthUnit := ParseRange (1, 5);
doc.fStyleInfo.fHeightUnit := ParseRange (1, 4);
haveResolution := TRUE
END;
100, 101, 102, 103, 104:
BEGIN
hSpec.frequency.value := ParseRange ($10000, 1000 * $10000);
hSpec.frequency.scale := ParseRange (1, 2);
hSpec.angle := ParseRange (-180 * $10000,
180 * $10000);
hSpec.shape := ParseRange (0, 4);
hSpec.spot := NIL;
IF which > 100 THEN
doc.fStyleInfo.fHalftoneSpecs [which - 101] := hSpec
ELSE IF NOT dcsPlate THEN
doc.fStyleInfo.fHalftoneSpec := hSpec
END;
200, 201, 202, 203, 204:
BEGIN
tSpec [0] := ParseRange ( 0, 100);
tSpec [1] := ParseRange (-1, 100);
tSpec [2] := ParseRange (-1, 100);
tSpec [3] := ParseRange (-1, 100);
tSpec [4] := ParseRange ( 0, 100);
IF which > 200 THEN
doc.fStyleInfo.fTransferSpecs [which - 201] := tSpec
ELSE IF NOT dcsPlate THEN
doc.fStyleInfo.fTransferSpec := tSpec
END;
210:
IF NOT dcsPlate THEN
doc.fStyleInfo.fGamma := ParseRange (100, 220)
END
END
UNTIL (LENGTH (s) = 0) | (s[1] <> '%');
IF NOT doc.ValidSize THEN Failure (errBadEPSF, 0);
IF (width > 0) AND (height > 0) AND NOT haveResolution THEN
BEGIN
IF height > width THEN
res := doc.fRows / height
ELSE
res := doc.fCols / width;
res := res * 72 * $10000;
IF res > 32000 * $10000 THEN res := 32000 * $10000;
doc.fStyleInfo.fResolution.value := Max (1, ROUND (res))
END;
WHILE (LENGTH (s) <> LENGTH (key)) | (POS (key, s) <> 1) DO
BEGIN
MoveHands (NOT doc.fReverting);
GetLine (s)
END
END;
{*****************************************************************************}
{$S AEPSFormat}
PROCEDURE TEPSFormat.ReadPostScript (doc: TImageDocument);
VAR
s: Str255;
j: INTEGER;
s1: Str255;
s2: Str255;
s3: Str255;
s4: Str255;
err: OSErr;
fi: FailInfo;
cPlate: Str255;
mPlate: Str255;
yPlate: Str255;
kPlate: Str255;
binary: BOOLEAN;
refNum: INTEGER;
channel: INTEGER;
newRows: INTEGER;
newCols: INTEGER;
rowBytes: INTEGER;
aVMArray: TVMArray;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
BEGIN
err := FSClose (refNum)
END;
BEGIN
ParseHeader (doc, binary, cPlate, mPlate, yPlate, kPlate, FALSE);
IF LENGTH (cPlate) <> 0 THEN
BEGIN
FOR channel := 0 TO 3 DO
BEGIN
StartTask (1 / (4 - channel));
CASE channel OF
0: s := cPlate;
1: s := mPlate;
2: s := yPlate;
3: s := kPlate
END;
err := FSOpen (s, doc.fVolRefnum, refNum);
IF err <> noErr THEN
Failure (errNoAuxEPSF - channel, 0);
CatchFailures (fi, CleanUp);
fRefNum := refNum;
ParseHeader (doc, binary, s1, s2, s3, s4, TRUE);
IF channel = 0 THEN
BEGIN
newRows := doc.fRows;
newCols := doc.fCols
END;
IF (doc.fRows <> newRows) OR
(doc.fCols <> newCols) OR
(doc.fChannels <> 1) OR
(doc.fDepth <> 8) THEN Failure (errBadEPSF, 0);
IF channel = 0 THEN
FOR j := 0 TO 3 DO
BEGIN
aVMArray := NewVMArray (newRows, newCols, 4 - j);
doc.fData [j] := aVMArray
END;
ReadImageData (doc, binary, channel, 1, 0, FALSE);
Success (fi);
FailOSErr (FSClose (refNum));
FinishTask
END;
doc.fMode := SeparationsCMYK;
doc.fChannels := 4
END
ELSE
BEGIN
IF doc.fDepth = 1 THEN
rowBytes := (doc.fCols + 15) DIV 16 * 2
ELSE
rowBytes := doc.fCols;
FOR channel := 0 TO doc.fChannels - 1 DO
BEGIN
aVMArray := NewVMArray (doc.fRows,
rowBytes,
doc.fChannels - channel);
doc.fData [channel] := aVMArray
END;
ReadImageData (doc,
binary,
0,
doc.fChannels,
ORD (doc.fChannels <> 1),
doc.fMode IN [HalftoneMode, SeparationsCMYK])
END
END;
{*****************************************************************************}
{$S AEPSFormat}
PROCEDURE TEPSFormat.DoRead (doc: TImageDocument;
refNum: INTEGER;
rsrcExists: BOOLEAN); OVERRIDE;
LABEL
1;
CONST
kUsePreviewPICT = 922;
VAR
h: Handle;
fi: FailInfo;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
BEGIN
IF (error = errBadEPSF) AND rsrcExists THEN
IF Count1Resources ('PICT') = 1 THEN
GOTO 1
END;
BEGIN
fSpool := FALSE;
fRefNum := refNum;
CatchFailures (fi, CleanUp);
ReadPostScript (doc);
Success (fi);
EXIT (DoRead);
1: { PostScript parse failed, try preview PICT }
IF doc.fRevertInfo = NIL THEN
BEGIN
IF BWAlert (kUsePreviewPICT, 0, TRUE) <> ok THEN
Failure (0, 0);
h := NewPermHandle (0);
FailNil (h);
doc.fRevertInfo := h
END;
INHERITED DoRead (doc, refNum, rsrcExists)
END;
{*****************************************************************************}
{$S AEPSFormat}
FUNCTION TEPSFormat.DataForkBytes (doc: TImageDocument): LONGINT; OVERRIDE;
VAR
count: LONGINT;
BEGIN
count := ORD4 (doc.fRows) * doc.fCols;
IF doc.fMode = HalftoneMode THEN
count := count DIV 8
ELSE IF doc.fMode = SeparationsCMYK THEN
IF fFiveFiles THEN
count := 0
ELSE
count := count * 5
ELSE IF NOT (doc.fMode IN [MonochromeMode, MultichannelMode]) THEN
count := count * 4;
IF fBinary THEN
DataForkBytes := count
ELSE
DataForkBytes := count * 2
END;
{*****************************************************************************}
{$S AEPSFormat}
FUNCTION TEPSFormat.MakePreviewPICT1 (doc: TImageDocument;
newRows: INTEGER;
newCols: INTEGER): Handle;
VAR
fi: FailInfo;
gray: INTEGER;
srcRect: Rect;
scale: INTEGER;
map: TLookUpTable;
buffer1: TVMArray;
buffer2: TVMArray;
dummyDoc: TImageDocument;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
BEGIN
FreeObject (buffer1);
FreeObject (buffer2);
FreeObject (dummyDoc)
END;
BEGIN
buffer1 := NIL;
buffer2 := NIL;
dummyDoc := NIL;
CatchFailures (fi, CleanUp);
SetRect (srcRect, 0, 0, doc.fCols, doc.fRows);
buffer1 := NewVMArray (newRows, BSL (BSR (newCols + 15, 4), 1), 1);
StartTask (0.7);
CASE doc.fMode OF
HalftoneMode:
IF (newRows = doc.fRows) AND (newCols = doc.fCols) THEN
doc.fData [0] . MoveArray (buffer1)
ELSE
BEGIN
scale := 1;
WHILE (scale < 16) AND
(scale < doc.fRows) AND
(scale < doc.fCols) AND
(doc.fRows DIV scale > newRows) AND
(doc.fCols DIV scale > newCols) DO scale := scale + 1;
{$IFC qDebug}
writeln ('scale = ', scale:1);
{$ENDC}
buffer2 := DeHalftoneDoc (doc, scale, FALSE);
SetRect (srcRect, 0, 0, buffer2.fLogicalSize, buffer2.fBlockCount);
{$IFC qDebug}
write ('srcRect = '); writeRect (srcRect); writeln;
{$ENDC}
HalftoneArea (buffer2,
buffer1,
srcRect,
newRows,
newCols,
NIL,
NIL,
FALSE)
END;
MonochromeMode,
MultichannelMode:
HalftoneArea (doc.fData [0],
buffer1,
srcRect,
newRows,
newCols,
NIL,
NIL,
FALSE);
IndexedColorMode:
BEGIN
FOR gray := 0 TO 255 DO
map [gray] := ConvertToGray
(doc.fIndexedColorTable.R [gray],
doc.fIndexedColorTable.G [gray],
doc.fIndexedColorTable.B [gray]);
HalftoneArea (doc.fData [0],
buffer1,
srcRect,
newRows,
newCols,
@map,
NIL,
FALSE)
END;
RGBColorMode:
BEGIN
StartTask (0.5);
buffer2 := MakeMonochromeArray (doc.fData [0],
doc.fData [1],
doc.fData [2]);
FinishTask;
HalftoneArea (buffer2,
buffer1,
srcRect,
newRows,
newCols,
NIL,
NIL,
FALSE)
END;
SeparationsCMYK:
BEGIN
buffer2 := NewVMArray (doc.fRows, doc.fCols, 1);
StartTask (0.5);
ConvertCMYK2Gray (doc.fData [0],
doc.fData [1],
doc.fData [2],
doc.fData [3],
buffer2);
FinishTask;
HalftoneArea (buffer2,
buffer1,
srcRect,
newRows,
newCols,
NIL,
NIL,
FALSE)
END
END;
FinishTask;
FreeObject (buffer2);
buffer2 := NIL;
dummyDoc := TImageDocument (gApplication.DoMakeDocument (cSave));
dummyDoc.fMode := HalftoneMode;