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UCrop.p
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UCrop.p
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{Photoshop version 1.0.1, file: UCrop.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/ }
UNIT UCrop;
INTERFACE
USES
{$LOAD MacIntf.LOAD}
MemTypes, QuickDraw, OSIntf, ToolIntf, PackIntf,
{$LOAD UMacApp.LOAD}
UObject, UList, UMacApp,
{$LOAD UPhotoshop.LOAD}
PaletteMgr, UConstants, UVMemory, UPhotoshop,
{$LOAD}
UDialog, UBWDialog, UCommands, UGhost, USelect, UProgress;
TYPE
TRectOptions = RECORD
mode : INTEGER;
size : Point;
ratioH: LONGINT;
ratioV: LONGINT
END;
TMarqueeSelector = OBJECT (TMaskCommand)
fLastRect: Rect;
fNextRect: Rect;
fMovedOnce: BOOLEAN;
fFlickerTime: LONGINT;
fFlickerState: INTEGER;
fOptions: TRectOptions;
PROCEDURE TMarqueeSelector.IMarqueeSelector
(itsCommand: INTEGER; view: TImageView;
add, remove, refine: BOOLEAN);
PROCEDURE TMarqueeSelector.CompNextRect (corner1, corner2: Point);
PROCEDURE TMarqueeSelector.TrackConstrain
(anchorPoint, previousPoint: Point;
VAR nextPoint: Point); OVERRIDE;
PROCEDURE TMarqueeSelector.DrawShape (r: Rect);
PROCEDURE TMarqueeSelector.TrackFeedBack
(anchorPoint, nextPoint: Point;
turnItOn, mouseDidMove: BOOLEAN); OVERRIDE;
PROCEDURE TMarqueeSelector.FillShape (r: Rect);
PROCEDURE TMarqueeSelector.SelectShape;
FUNCTION TMarqueeSelector.TrackMouse
(aTrackPhase: TrackPhase;
VAR anchorPoint, previousPoint, nextPoint: Point;
mouseDidMove: BOOLEAN): TCommand; OVERRIDE;
END;
TEllipseSelector = OBJECT (TMarqueeSelector)
PROCEDURE TEllipseSelector.IEllipseSelector
(view: TImageView; add, remove, refine: BOOLEAN);
PROCEDURE TEllipseSelector.DrawShape (r: Rect); OVERRIDE;
PROCEDURE TEllipseSelector.FillShape (r: Rect); OVERRIDE;
PROCEDURE TEllipseSelector.SelectShape; OVERRIDE;
END;
TCroppingTool = OBJECT (TMarqueeSelector)
fRatio: EXTENDED;
fStyleInfo: TStyleInfo;
fOptionDown: BOOLEAN;
fCommandDown: BOOLEAN;
fNextCorners: TCornerList;
fBaseCorners: TCornerList;
fLastCorners: TCornerList;
PROCEDURE TCroppingTool.ICroppingTool (view: TImageView);
FUNCTION TCroppingTool.TrackMouse
(aTrackPhase: TrackPhase;
VAR anchorPoint, previousPoint, nextPoint: Point;
mouseDidMove: BOOLEAN): TCommand; OVERRIDE;
PROCEDURE TCroppingTool.DrawFeedback (state: INTEGER);
PROCEDURE TCroppingTool.MoveCorner (corner: INTEGER; delta: Point);
PROCEDURE TCroppingTool.TrackCorner (corner: INTEGER; downPt: Point);
FUNCTION TCroppingTool.InsideCorners (pt: Point): BOOLEAN;
PROCEDURE TCroppingTool.GetNewCorners;
PROCEDURE TCroppingTool.ComputeNewSize (VAR newRows: INTEGER;
VAR newCols: INTEGER);
PROCEDURE TCroppingTool.SkewArray (srcArray: TVMArray;
dstArray: TVMArray;
offset1: EXTENDED;
offset2: EXTENDED;
oldWidth: EXTENDED;
r: Rect);
PROCEDURE TCroppingTool.AngledCrop (srcArray: TVMArray;
dstArray: TVMArray);
PROCEDURE TCroppingTool.DoIt; OVERRIDE;
PROCEDURE TCroppingTool.UndoIt; OVERRIDE;
PROCEDURE TCroppingTool.RedoIt; OVERRIDE;
END;
TCropCommand = OBJECT (TBufferCommand)
fRows: INTEGER;
fCols: INTEGER;
fSelectionRect: Rect;
PROCEDURE TCropCommand.ICropCommand (view: TImageView);
PROCEDURE TCropCommand.DoIt; OVERRIDE;
PROCEDURE TCropCommand.UndoIt; OVERRIDE;
PROCEDURE TCropCommand.RedoIt; OVERRIDE;
END;
TRulerCommand = OBJECT (TBufferCommand)
fOldOrigin: Point;
fNewOrigin: Point;
PROCEDURE TRulerCommand.IRulerCommand (view: TImageView; pt: Point);
PROCEDURE TRulerCommand.DoIt; OVERRIDE;
PROCEDURE TRulerCommand.UndoIt; OVERRIDE;
PROCEDURE TRulerCommand.RedoIt; OVERRIDE;
END;
PROCEDURE InitCrops;
FUNCTION DoMarqueeTool (view: TImageView;
add: BOOLEAN;
remove: BOOLEAN;
refine: BOOLEAN): TCommand;
PROCEDURE DoMarqueeOptions;
FUNCTION DoEllipseTool (view: TImageView;
add: BOOLEAN;
remove: BOOLEAN;
refine: BOOLEAN): TCommand;
PROCEDURE DoEllipseOptions;
FUNCTION DoCroppingTool (view: TImageView): TCommand;
PROCEDURE DoCroppingOptions;
FUNCTION DoCropCommand (view: TImageView): TCommand;
FUNCTION AdjustZeroPoint (view: TImageView): TCommand;
IMPLEMENTATION
{$I UAssembly.a.inc}
{$I UResize.p.inc}
{$I URotate.a.inc}
{$I URotate.p.inc}
VAR
gMarqueeOptions: TRectOptions;
gEllipseOptions: TRectOptions;
gCroppingWidth: FixedScaled;
gCroppingHeight: FixedScaled;
gCroppingResolution: FixedScaled;
{*****************************************************************************}
{$S AInit}
PROCEDURE InitCrops;
BEGIN
WITH gMarqueeOptions DO
BEGIN
mode := 0;
size.h := 64;
size.v := 64;
ratioH := 1000;
ratioV := 1000
END;
gEllipseOptions := gMarqueeOptions;
gCroppingWidth.scale := 1 + ORD (gMetric);
gCroppingWidth.value := 0;
gCroppingHeight.scale := 1 + ORD (gMetric);
gCroppingHeight.value := 0;
gCroppingResolution.scale := 1;
gCroppingResolution.value := 0
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TMarqueeSelector.IMarqueeSelector (itsCommand: INTEGER;
view: TImageView;
add, remove, refine: BOOLEAN);
BEGIN
IMaskCommand (itsCommand, view, add, remove, refine, FALSE, FALSE, TRUE);
fAutoScroll := TRUE;
fConstrainsMouse := TRUE;
fMovedOnce := FALSE;
fFlickerTime := TickCount;
fFlickerState := 0;
fOptions := gMarqueeOptions
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TMarqueeSelector.CompNextRect (corner1, corner2: Point);
VAR
x: EXTENDED;
delta: Point;
bounds: Rect;
width: INTEGER;
ratio: EXTENDED;
height: INTEGER;
theKeys: KeyMap;
fromCenter: BOOLEAN;
hysteresis: BOOLEAN;
BEGIN
GetKeys (theKeys);
fromCenter := theKeys [kOptionCode];
fDoc.GetBoundsRect (bounds);
hysteresis := (fOptions.mode <= 1);
IF hysteresis AND NOT fMovedOnce THEN
fNextRect := gZeroRect
ELSE
CASE fOptions.mode OF
0,1:
BEGIN { Normal and Fixed Ratio }
IF fOptions.mode = 1 THEN
BEGIN
ratio := fOptions.ratioH / fOptions.ratioV;
width := ABS (corner2.h - corner1.h) + 1;
height := ABS (corner2.v - corner1.v) + 1;
IF width <= height * ratio THEN
BEGIN
x := width / ratio;
IF x > kMaxCoord THEN x := kMaxCoord;
height := Max (1, ROUND (x));
IF corner2.v >= corner1.v THEN
corner2.v := corner1.v + height - 1
ELSE
corner2.v := corner1.v - height + 1
END
ELSE
BEGIN
x := height * ratio;
IF x > kMaxCoord THEN x := kMaxCoord;
width := Max (1, ROUND (x));
IF corner2.h >= corner1.h THEN
corner2.h := corner1.h + width - 1
ELSE
corner2.h := corner1.h - width + 1
END
END;
IF fromCenter THEN
BEGIN
delta.h := ABS (corner2.h - corner1.h) + 1;
delta.v := ABS (corner2.v - corner1.v) + 1;
fNextRect.right := Min (kMaxCoord, corner1.h + delta.h);
fNextRect.bottom := Min (kMaxCoord, corner1.v + delta.v);
fNextRect.left := fNextRect.right - BSL (delta.h, 1);
fNextRect.top := fNextRect.bottom - BSL (delta.v, 1);
{$H-}
SlideRectInto (fNextRect, bounds)
{$H+}
END
ELSE
BEGIN
{$H-}
Pt2Rect (corner1, corner2, fNextRect);
{$H+}
fNextRect.right := fNextRect.right + 1;
fNextRect.bottom := fNextRect.bottom + 1
END
END;
2: BEGIN { Fixed Size }
IF fromCenter THEN
BEGIN
fNextRect.right := Min (kMaxCoord,
corner2.h + BSR (fOptions.size.h, 1));
fNextRect.bottom := Min (kMaxCoord,
corner2.v + BSR (fOptions.size.v, 1))
END
ELSE
BEGIN
fNextRect.right := corner2.h + 1;
fNextRect.bottom := corner2.v + 1
END;
fNextRect.left := fNextRect.right - fOptions.size.h;
fNextRect.top := fNextRect.bottom - fOptions.size.v;
{$H-}
SlideRectInto (fNextRect, bounds)
{$H+}
END;
3: BEGIN { Single Row }
fNextRect := bounds;
fNextRect.top := corner2.v;
fNextRect.bottom := corner2.v + 1
END;
4: BEGIN { Single Column }
fNextRect := bounds;
fNextRect.left := corner2.h;
fNextRect.right := corner2.h + 1
END
END
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TMarqueeSelector.TrackConstrain
(anchorPoint, previousPoint: Point; VAR nextPoint: Point); OVERRIDE;
VAR
corner1: Point;
corner2: Point;
firstPoint: Point;
BEGIN
fView.TrackRulers;
firstPoint := anchorPoint;
IF NOT fMovedOnce THEN
BEGIN
fMovedOnce := (Abs (nextPoint.h - firstPoint.h) > gStdHysteresis.h) OR
(Abs (nextPoint.v - firstPoint.v) > gStdHysteresis.v);
fView.CvtView2Image (firstPoint);
fView.CvtImage2View (firstPoint, kRoundDown)
END;
fView.CvtView2Image (nextPoint);
fView.CvtImage2View (nextPoint, kRoundDown);
corner1 := firstPoint;
corner2 := nextPoint;
fView.CvtView2Image (corner1);
fView.CvtView2Image (corner2);
corner1.h := Min (corner1.h, fDoc.fCols - 1);
corner1.v := Min (corner1.v, fDoc.fRows - 1);
corner2.h := Min (corner2.h, fDoc.fCols - 1);
corner2.v := Min (corner2.v, fDoc.fRows - 1);
CompNextRect (corner1, corner2)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TMarqueeSelector.DrawShape (r: Rect);
BEGIN
FrameRect (r)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TMarqueeSelector.TrackFeedBack
(anchorPoint, nextPoint: Point;
turnItOn, mouseDidMove: BOOLEAN); OVERRIDE;
VAR
r: Rect;
flicker: BOOLEAN;
BEGIN
flicker := turnItOn AND (TickCount >= fFlickerTime);
IF flicker THEN
BEGIN
fFlickerTime := TickCount + kHLDelay;
fFlickerState := (fFlickerState + 1) MOD kHLPatterns
END;
IF mouseDidMove OR NOT EqualRect (fLastRect, fNextRect) THEN
BEGIN
IF turnItOn THEN fLastRect := fNextRect;
PenPat (gHLPattern [fFlickerState])
END
ELSE IF flicker THEN
PenPat (gHLPatternDelta [fFlickerState])
ELSE
EXIT (TrackFeedBack);
r := fLastRect;
fView.CvtImage2View (r.topLeft, kRoundDown);
fView.CvtImage2View (r.botRight, kRoundUp);
PenSize (kMarqueeWidth, kMarqueeWidth);
DrawShape (r)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TMarqueeSelector.FillShape (r: Rect);
BEGIN
fMask.SetRect (r, 255)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TMarqueeSelector.SelectShape;
VAR
r: Rect;
BEGIN
r := fMaskBounds;
fDoc.Select (r, NIL)
END;
{*****************************************************************************}
{$S ACropping}
FUNCTION TMarqueeSelector.TrackMouse
(aTrackPhase: TrackPhase;
VAR anchorPoint, previousPoint, nextPoint: Point;
mouseDidMove: BOOLEAN): TCommand; OVERRIDE;
VAR
r: Rect;
fi: FailInfo;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
BEGIN
FixObscured;
Free;
FailNewMessage (error, message, msgCannotMarquee)
END;
BEGIN
TrackMouse := SELF;
IF aTrackPhase = trackRelease THEN
BEGIN
CatchFailures (fi, CleanUp);
MoveHands (TRUE);
r := fNextRect;
IF EmptyRect (r) THEN
TrackMouse := DropSelection (fView)
ELSE
BEGIN
fMaskBounds := r;
IF fAdd OR fRemove OR fRefine THEN
BEGIN
fMask.SetBytes (0);
FillShape (r);
MoveHands (TRUE);
UpdateSelection
END
ELSE
BEGIN
IF fWasFloating THEN
FloatSelection (FALSE)
ELSE
BEGIN
fSaveRect := fDoc.fSelectionRect;
IF fDoc.fSelectionMask <> NIL THEN
fSaveMask := fDoc.fSelectionMask.CopyArray (1)
END;
SelectShape
END
END;
Success (fi)
END
END;
{*****************************************************************************}
{$S ACropping}
FUNCTION DoMarqueeTool (view: TImageView;
add: BOOLEAN;
remove: BOOLEAN;
refine: BOOLEAN): TCommand;
VAR
fi: FailInfo;
aMarqueeSelector: TMarqueeSelector;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
BEGIN
FailNewMessage (error, message, msgCannotMarquee)
END;
BEGIN
CatchFailures (fi, CleanUp);
NEW (aMarqueeSelector);
FailNil (aMarqueeSelector);
aMarqueeSelector.IMarqueeSelector (cMarquee, view, add, remove, refine);
DoMarqueeTool := aMarqueeSelector;
Success (fi)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE DoRectOptions (dialogID: INTEGER; VAR options: TRectOptions);
CONST
kHookItem = 3;
kColsRatioItem = 4;
kRowsRatioItem = 5;
kColsSizeItem = 6;
kRowsSizeItem = 7;
kNormalItem = 8;
kFixedRatioItem = 9;
kFixedSizeItem = 10;
kSingleRowItem = 11;
kSingleColItem = 12;
VAR
fi: FailInfo;
hitItem: INTEGER;
aBWDialog: TBWDialog;
colsSizeText: TFixedText;
rowsSizeText: TFixedText;
colsRatioText: TFixedText;
rowsRatioText: TFixedText;
modeCluster: TRadioCluster;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
BEGIN
aBWDialog.Free
END;
PROCEDURE MyItemHandling (anItem: INTEGER; VAR done: BOOLEAN);
BEGIN
StdItemHandling (anItem, done);
CASE anItem OF
kColsRatioItem,
kRowsRatioItem:
StdItemHandling (kFixedRatioItem, done);
kColsSizeItem,
kRowsSizeItem:
StdItemHandling (kFixedSizeItem, done)
END
END;
BEGIN
NEW (aBWDialog);
FailNil (aBWDialog);
aBWDialog.IBWDialog (dialogID, kHookItem, ok);
CatchFailures (fi, CleanUp);
colsRatioText := aBWDialog.DefineFixedText
(kColsRatioItem, 3, FALSE, TRUE, 1, 9999999);
rowsRatioText := aBWDialog.DefineFixedText
(kRowsRatioItem, 3, FALSE, TRUE, 1, 9999999);
colsRatioText.StuffValue (options.ratioH);
rowsRatioText.StuffValue (options.ratioV);
colsSizeText := aBWDialog.DefineFixedText
(kColsSizeItem, 0, FALSE, TRUE, 1, kMaxCoord);
rowsSizeText := aBWDialog.DefineFixedText
(kRowsSizeItem, 0, FALSE, TRUE, 1, kMaxCoord);
colsSizeText.StuffValue (options.size.h);
rowsSizeText.StuffValue (options.size.v);
modeCluster := aBWDialog.DefineRadioCluster
(kNormalItem,
kSingleColItem,
kNormalItem + options.mode);
IF options.mode = 1 THEN
aBWDialog.SetEditSelection (kColsRatioItem)
ELSE
aBWDialog.SetEditSelection (kColsSizeItem);
aBWDialog.TalkToUser (hitItem, MyItemHandling);
IF hitItem <> ok THEN Failure (0, 0);
options.ratioH := colsRatioText.fValue;
options.ratioV := rowsRatioText.fValue;
options.size.h := colsSizeText.fValue;
options.size.v := rowsSizeText.fValue;
options.mode := modeCluster.fChosenItem - kNormalItem;
Success (fi);
CleanUp (0, 0)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE DoMarqueeOptions;
CONST
kDialogID = 1080;
BEGIN
DoRectOptions (kDialogID, gMarqueeOptions)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TEllipseSelector.IEllipseSelector (view: TImageView;
add, remove, refine: BOOLEAN);
BEGIN
IMarqueeSelector (cEllipse, view, add, remove, refine);
fOptions := gEllipseOptions
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TEllipseSelector.DrawShape (r: Rect); OVERRIDE;
BEGIN
FrameOval (r)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TEllipseSelector.FillShape (r: Rect); OVERRIDE;
VAR
dstPtr: Ptr;
fi: FailInfo;
row: INTEGER;
width: INTEGER;
height: INTEGER;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
BEGIN
FailNewMessage (error, message, msgCannotEllipse)
END;
BEGIN
CatchFailures (fi, CleanUp);
width := r.right - r.left;
height := r.bottom - r.top;
FOR row := 0 TO height - 1 DO
BEGIN
MoveHands (TRUE);
dstPtr := fMask.NeedPtr (row + r.top, row + r.top, TRUE);
dstPtr := Ptr (ORD4 (dstPtr) + r.left);
DoEllipseRow (dstPtr, row, width, height);
fMask.DoneWithPtr
END;
fMask.Flush;
Success (fi)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TEllipseSelector.SelectShape; OVERRIDE;
VAR
r: Rect;
fi: FailInfo;
PROCEDURE CleanUp (error: INTEGER; message: LONGINT);
BEGIN
FailNewMessage (error, message, msgCannotEllipse)
END;
BEGIN
CatchFailures (fi, CleanUp);
MoveHands (TRUE);
r := fMaskBounds;
OffsetRect (r, -r.left, -r.top);
fMask := NewVMArray (r.bottom, r.right, 1);
FillShape (r);
r := fMaskBounds;
fDoc.Select (r, fMask.CopyArray (1));
Success (fi)
END;
{*****************************************************************************}
{$S ACropping}
FUNCTION DoEllipseTool (view: TImageView;
add: BOOLEAN;
remove: BOOLEAN;
refine: BOOLEAN): TCommand;
VAR
anEllipseSelector: TEllipseSelector;
BEGIN
NEW (anEllipseSelector);
FailNil (anEllipseSelector);
anEllipseSelector.IEllipseSelector (view, add, remove, refine);
DoEllipseTool := anEllipseSelector
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE DoEllipseOptions;
CONST
kDialogID = 1093;
BEGIN
DoRectOptions (kDialogID, gEllipseOptions)
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TCroppingTool.ICroppingTool (view: TImageView);
BEGIN
IMarqueeSelector (cCrop, view, FALSE, FALSE, FALSE);
fCausesChange := TRUE;
fStyleInfo := fDoc.fStyleInfo;
IF gCroppingHeight.value = 0 THEN
BEGIN
fRatio := 0;
fOptions.mode := 0
END
ELSE
BEGIN
fRatio := gCroppingWidth.value / gCroppingHeight.value;
fOptions.mode := 1;
fOptions.ratioH := gCroppingWidth.value;
fOptions.ratioV := gCroppingHeight.value
END
END;
{*****************************************************************************}
{$S ACropping}
FUNCTION TCroppingTool.TrackMouse
(aTrackPhase: TrackPhase;
VAR anchorPoint, previousPoint, nextPoint: Point;
mouseDidMove: BOOLEAN): TCommand; OVERRIDE;
BEGIN
IF (aTrackPhase = trackRelease) & EmptyRect (fNextRect) THEN
TrackMouse := gNoChanges
ELSE
TrackMouse := SELF
END;
{*****************************************************************************}
{$S ACropping}
PROCEDURE TCroppingTool.DrawFeedback (state: INTEGER);
VAR
r: Rect;
j: INTEGER;
PROCEDURE DrawSides;
VAR
pt: Point;
j: INTEGER;
vp: TCornerList;
BEGIN
PenMode (patXor);
FOR j := 0 TO 3 DO
BEGIN
vp [j] := fLastCorners [j];
fView.CvtImage2View (vp [j], kRoundUp)
END;
vp[1].h := vp[1].h - 1;
vp[2].h := vp[2].h - 1;
vp[2].v := vp[2].v - 1;
vp[3].v := vp[3].v - 1;
FOR j := 0 TO 3 DO
BEGIN
pt := vp [j];