/*

     File: FilterView.m

 Abstract: The filter view is really the box that contains all the UI widgets to edit a layer. Each of the widgets (slider with label and readout, color well with label, check box, image view with choose button, etc) gets encoded in its own parameter view.

  Version: 2.1

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 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

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 */

#import <QuartzCore/QuartzCore.h>

#import "ParameterView.h"

#import "FilterView.h"

#import "CoreImageView.h"

#import "EffectStackController.h"

#define kSliderVerticalAdvance (18)

#define kVerticalGap (0)

@implementation FilterView

- (void)setTag:(NSInteger)index

{

    tag = index;

}

- (id)initWithFrame:(NSRect)frame 

{

    self = [super initWithFrame:frame];

    if (self != nil) 

    {

        controlLeftPosition = 5;

        controlTopPosition = frame.size.height;

        lastControlType = ctNone;

    }

    return self;

}

// trim the box down to include only the allocated widgets

- (void)trimBox

{

    NSRect R;

    R = [self frame];

    controlTopPosition -= 3;

    R.size.height -= controlTopPosition;

    R.origin.y += controlTopPosition;

    [self setFrame:R];

    lastControlType = ctNone;

}

// allocate the space required for a filter layer header

- (void)tryFilterHeader:(CIFilter *)filter

{

    NSRect R;

    R = [self bounds];

    R.origin.y += R.size.height - 38;

    R.size.height = 22;

    R.origin.x += 63;

    R.size.width -= 62 + 63;

    controlTopPosition = R.origin.y - 8;

}

// add a filter layer header

- (void)addFilterHeader:(CIFilter *)f tag:(NSInteger)index enabled:(BOOL)enabled

{

    NSRect R, S, cbR;

    NSString *name;

    NSCell *c;

    R = [self bounds];

    R.origin.y += R.size.height - 38;

    R.size.height = 22;

    R.origin.x += 33;

    R.size.width -= 62 + 63;

    // add enable/disable check box

    cbR = R;

    cbR.origin.x = 0;

    cbR.size.width = 58;

    cbR.size.height = 22;

    // label

    filterNameField = [[NSTextField alloc] initWithFrame:R];

    name = [[f attributes] objectForKey:kCIAttributeFilterDisplayName];

    // set text label to 9 point

    c = [filterNameField cell];

    // determine if we need to ellipsize

    name = [ParameterView ellipsizeField:[c drawingRectForBounds:[filterNameField bounds]].size.width font:[c font] string:name];

    [filterNameField setStringValue:name];

    [filterNameField setEditable:NO];

    [filterNameField setBezeled:NO];

    [filterNameField setDrawsBackground:NO];

    [filterNameField setAutoresizingMask:NSViewMaxXMargin|NSViewMinYMargin];

    [self addSubview:filterNameField];

    checkBox = [[NSButton alloc] initWithFrame:cbR];

    [checkBox setTarget:master];

    [checkBox setAction:@selector(enableCheckBoxAction:)];

    [checkBox setButtonType:NSSwitchButton];

    [checkBox setState:(enabled ? NSOnState : NSOffState)];

    [checkBox setTitle:@""];

    [checkBox setTag:index];

    [self addSubview:checkBox];

    // add + button

    S = R;

    S.origin.x = R.origin.x + R.size.width + 33;

    S.origin.y += 3;

    S.size.height -= 4;

    S.size.width = 22;

    plusbutton = [[NSButton alloc] initWithFrame:S];

    [[plusbutton cell] setButtonType:NSMomentaryLightButton];

    [[plusbutton cell] setBezelStyle:NSShadowlessSquareBezelStyle];

    [[plusbutton cell] setGradientType:NSGradientConcaveWeak];

    [plusbutton setImagePosition:NSImageOnly];

    [plusbutton setImage:[NSImage imageNamed:@"plusbutton"]];

    [plusbutton setBordered:NO];

    [plusbutton setTarget:master];

    [plusbutton setAction:@selector(plusButtonAction:)];

    [plusbutton setTag:index];

    [self addSubview:plusbutton];

    // add - button

    S.origin.x += 21;

    minusbutton = [[NSButton alloc] initWithFrame:S];

    [[minusbutton cell] setButtonType:NSMomentaryLightButton];

    [[minusbutton cell] setBezelStyle:NSShadowlessSquareBezelStyle];

    [[minusbutton cell] setGradientType:NSGradientConcaveWeak];

    [minusbutton setImagePosition:NSImageOnly];

    [minusbutton setImage:[NSImage imageNamed:@"minusbutton"]];

    [minusbutton setBordered:NO];

    [minusbutton setTarget:master];

    [minusbutton setAction:@selector(minusButtonAction:)];

    [minusbutton setTag:index];

    [self addSubview:minusbutton];

    controlTopPosition = R.origin.y - 8;

}

// allocate the space required for an image layer header

- (void)tryImageHeader:(CIImage *)im

{

    NSRect R;

    R = [self bounds];

    R.origin.y += R.size.height - 38;

    R.size.height = 22;

    R.origin.x += 63;

    R.size.width -= 62 + 63;

    controlTopPosition = R.origin.y - 8;

}

// add an image layer header

- (void)addImageHeader:(CIImage *)im filename:(NSString *)filename tag:(NSInteger)index enabled:(BOOL)enabled

{

    NSRect R, S, cbR;

    NSString *name;

    NSCell *c;

    R = [self bounds];

    R.origin.y += R.size.height - 38;

    R.size.height = 22;

    R.origin.x += 33;

    R.size.width -= 62 + 63;

    // add enable/disable check box

    cbR = R;

    cbR.origin.x = 0;

    cbR.size.width = 58;

    cbR.size.height = 22;

    // label

    filterNameField = [[NSTextField alloc] initWithFrame:R];

    name = [filename copy];

    // set text label to 9 point

    c = [filterNameField cell];

    // determine if we need to ellipsize

    name = [ParameterView ellipsizeField:[c drawingRectForBounds:[filterNameField bounds]].size.width font:[c font] string:[name autorelease]];

    [filterNameField setStringValue:name];

    [filterNameField setEditable:NO];

    [filterNameField setBezeled:NO];

    [filterNameField setDrawsBackground:NO];

    [filterNameField setAutoresizingMask:NSViewMaxXMargin|NSViewMinYMargin];

    [self addSubview:filterNameField];

    checkBox = [[NSButton alloc] initWithFrame:cbR];

    [checkBox setTarget:master];

    [checkBox setAction:@selector(enableCheckBoxAction:)];

    [checkBox setButtonType:NSSwitchButton];

    [checkBox setState:(enabled ? NSOnState : NSOffState)];

    [checkBox setTitle:@""];

    [checkBox setTag:index];

    [self addSubview:checkBox];

    // add + button

    S = R;

    S.origin.x = R.origin.x + R.size.width + 33;

    S.origin.y += 3;

    S.size.height -= 4;

    S.size.width = 22;

    plusbutton = [[NSButton alloc] initWithFrame:S];

    [[plusbutton cell] setButtonType:NSMomentaryLightButton];

    [[plusbutton cell] setBezelStyle:NSShadowlessSquareBezelStyle];

    [[plusbutton cell] setGradientType:NSGradientConcaveWeak];

    [plusbutton setImagePosition:NSImageOnly];

    [plusbutton setImage:[NSImage imageNamed:@"plusbutton"]];

    [plusbutton setBordered:NO];

    [plusbutton setTarget:master];

    [plusbutton setAction:@selector(plusButtonAction:)];

    [plusbutton setTag:index];

    [self addSubview:plusbutton];

    // add - button

    S.origin.x += 21;

    minusbutton = [[NSButton alloc] initWithFrame:S];

    [[minusbutton cell] setButtonType:NSMomentaryLightButton];

    [[minusbutton cell] setBezelStyle:NSShadowlessSquareBezelStyle];

    [[minusbutton cell] setGradientType:NSGradientConcaveWeak];

    [minusbutton setImagePosition:NSImageOnly];

    [minusbutton setImage:[NSImage imageNamed:@"minusbutton"]];

    [minusbutton setBordered:NO];

    [minusbutton setTarget:master];

    [minusbutton setAction:@selector(minusButtonAction:)];

    [minusbutton setTag:index];

    [self addSubview:minusbutton];

    controlTopPosition = R.origin.y - 8;

}

// allocate the space required for a filter layer slider

- (void)trySliderForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    controlTopPosition -= kSliderVerticalAdvance + kVerticalGap;

    lastControlType = ctSlider;

}

// add a filter layer slider

- (void)addSliderForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self bounds];

    pRect = NSMakeRect(0, controlTopPosition - kSliderVerticalAdvance, frame.size.width - 12, kSliderVerticalAdvance);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addSliderForFilter:f key:k displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    [pView setAutoresizingMask:NSViewWidthSizable|NSViewMinYMargin];

    controlTopPosition -= kSliderVerticalAdvance + kVerticalGap;

    lastControlType = ctSlider;

}

// allocate the space required for a filter layer check box

- (void)tryCheckBoxForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    controlTopPosition -= 17;

    lastControlType = ctCheckBox;

}

// add a filter layer check box

- (void)addCheckBoxForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self frame];

    pRect = NSMakeRect(controlLeftPosition, controlTopPosition - 16, frame.size.width - 10, 16);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addCheckBoxForFilter:f key:k displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    [pView setAutoresizingMask:NSViewMaxXMargin|NSViewMinYMargin];

    controlTopPosition -= 17;

    lastControlType = ctCheckBox;

}

// allocate the space required for a filter layer color well

// note: we can pack two color wells next to each other, if they follow one another!

- (void)tryColorWellForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    NSRect frame;

    frame = [self frame];

    if (lastControlType != ctColorWell)

        colorWellOffset = controlLeftPosition;

    else

        {

        controlTopPosition += 28;

        colorWellOffset += floor((frame.size.width - 20)/2);

        if (colorWellOffset > controlLeftPosition + floor((frame.size.width - 20)/2))

            {

            colorWellOffset = controlLeftPosition;

            controlTopPosition -= 28;

            }

        }

    controlTopPosition -= 28;

    lastControlType = ctColorWell;

}

// add a filter layer color well

// note: we can pack two color wells next to each other, if they follow one another!

- (void)addColorWellForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self frame];

    if (lastControlType != ctColorWell)

        colorWellOffset = controlLeftPosition;

    else

    {

        controlTopPosition += 28;

        colorWellOffset += floor((frame.size.width - 20)/2);

        if (colorWellOffset > controlLeftPosition + floor((frame.size.width - 20)/2))

        {

            colorWellOffset = controlLeftPosition;

            controlTopPosition -= 28;

        }

    }

    pRect = NSMakeRect(colorWellOffset, controlTopPosition - 24, floor((frame.size.width - 20)/2), 24);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addColorWellForFilter:f key:k displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    if (colorWellOffset == controlLeftPosition)

        [pView setAutoresizingMask:NSViewWidthSizable|NSViewMaxXMargin|NSViewMinYMargin];

    else

        [pView setAutoresizingMask:NSViewWidthSizable|NSViewMinXMargin|NSViewMinYMargin];

    controlTopPosition -= 28;

    lastControlType = ctColorWell;

}

// allocate the space required for a filter layer image view

- (void)tryImageWellForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    controlTopPosition -= 48;

    lastControlType = ctImageWell;

}

// add a filter layer image view

- (void)addImageWellForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self frame];

    pRect = NSMakeRect(controlLeftPosition, controlTopPosition - 44, frame.size.width - 10, 44);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addImageWellForFilter:f key:k displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    [pView setAutoresizingMask:NSViewWidthSizable|NSViewMaxXMargin|NSViewMinYMargin];

    controlTopPosition -= 48;

    lastControlType = ctImageWell;

}

// allocate the space required for a filter layer transform (4 sliders)

- (void)tryTransformForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    controlTopPosition -= 68;

    lastControlType = ctTransform;

}

// add a filter layer transform (4 sliders)

- (void)addTransformForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self frame];

    pRect = NSMakeRect(controlLeftPosition, controlTopPosition - 67, frame.size.width - 10, 67);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addTransformForFilter:f key:k displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    [pView setAutoresizingMask:NSViewWidthSizable|NSViewMinYMargin];

    controlTopPosition -= 68;

    lastControlType = ctTransform;

}

// allocate the space required for a filter layer naked CIVector (4 editable text fields)

- (void)tryVectorForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    controlTopPosition -= 17;

    lastControlType = ctVector;

}

// add a filter layer naked CIVector (4 editable text fields)

- (void)addVectorForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self frame];

    pRect = NSMakeRect(controlLeftPosition, controlTopPosition - 16, frame.size.width - 10, 16);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addVectorForFilter:f key:k displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    [pView setAutoresizingMask:NSViewWidthSizable|NSViewMinYMargin];

    controlTopPosition -= 17;

    lastControlType = ctVector;

}

// allocate the space required for a filter layer offset CIVector (2 editable text fields)

- (void)tryOffsetForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    controlTopPosition -= 17;

    lastControlType = ctOffset;

}

// add a filter layer offset CIVector (2 editable text fields)

- (void)addOffsetForFilter:(CIFilter *)f key:(NSString *)k displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self frame];

    pRect = NSMakeRect(controlLeftPosition, controlTopPosition - 16, frame.size.width - 10, 16);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addOffsetForFilter:f key:k displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    [pView setAutoresizingMask:NSViewWidthSizable|NSViewMinYMargin];

    controlTopPosition -= 17;

    lastControlType = ctOffset;

}

// allocate the space required for an image layer image view

- (void)tryImageWellForImage:(CIImage *)im tag:(NSInteger)tag displayView:(CoreImageView *)v

{

    controlTopPosition -= 48;

    lastControlType = ctImageWell;

}

// add an image layer image view

- (void)addImageWellForImage:(CIImage *)im tag:(NSInteger)index displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self frame];

    pRect = NSMakeRect(controlLeftPosition, controlTopPosition - 44, frame.size.width - 10, 44);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addImageWellForImage:im tag:index displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    [pView setAutoresizingMask:NSViewWidthSizable|NSViewMaxXMargin|NSViewMinYMargin];

    controlTopPosition -= 48;

    lastControlType = ctImageWell;

}

// allocate the space required for a text layer header

- (void)tryTextHeader:(NSString *)string

{

    NSRect R;

    R = [self bounds];

    R.origin.y += R.size.height - 38;

    R.size.height = 22;

    R.origin.x += 63;

    R.size.width -= 62 + 63;

    controlTopPosition = R.origin.y - 8;

}

// add a text layer header

- (void)addTextHeader:(NSString *)string tag:(NSInteger)index enabled:(BOOL)enabled

{

    NSRect R, S, cbR;

    NSString *name;

    NSCell *c;

    R = [self bounds];

    R.origin.y += R.size.height - 38;

    R.size.height = 22;

    R.origin.x += 33;

    R.size.width -= 62 + 63;

    // add enable/disable check box

    cbR = R;

    cbR.origin.x = 0;

    cbR.size.width = 58;

    cbR.size.height = 22;

    // label

    filterNameField = [[NSTextField alloc] initWithFrame:R];

    name = @"Text";

    // set text label to 9 point

    c = [filterNameField cell];

    // determine if we need to ellipsize

    name = [ParameterView ellipsizeField:[c drawingRectForBounds:[filterNameField bounds]].size.width font:[c font] string:name];

    [filterNameField setStringValue:name];

    [filterNameField setEditable:NO];

    [filterNameField setBezeled:NO];

    [filterNameField setDrawsBackground:NO];

    [filterNameField setAutoresizingMask:NSViewMaxXMargin|NSViewMinYMargin];

    [self addSubview:filterNameField];

    checkBox = [[NSButton alloc] initWithFrame:cbR];

    [checkBox setTarget:master];

    [checkBox setAction:@selector(enableCheckBoxAction:)];

    [checkBox setButtonType:NSSwitchButton];

    [checkBox setState:(enabled ? NSOnState : NSOffState)];

    [checkBox setTitle:@""];

    [checkBox setTag:index];

    [self addSubview:checkBox];

    // add + button

    S = R;

    S.origin.x = R.origin.x + R.size.width + 33;

    S.origin.y += 3;

    S.size.height -= 4;

    S.size.width = 22;

    plusbutton = [[NSButton alloc] initWithFrame:S];

    [[plusbutton cell] setButtonType:NSMomentaryLightButton];

    [[plusbutton cell] setBezelStyle:NSShadowlessSquareBezelStyle];

    [[plusbutton cell] setGradientType:NSGradientConcaveWeak];

    [plusbutton setImagePosition:NSImageOnly];

    [plusbutton setImage:[NSImage imageNamed:@"plusbutton"]];

    [plusbutton setBordered:NO];

    [plusbutton setTarget:master];

    [plusbutton setAction:@selector(plusButtonAction:)];

    [plusbutton setTag:index];

    [self addSubview:plusbutton];

    // add - button

    S.origin.x += 21;

    minusbutton = [[NSButton alloc] initWithFrame:S];

    [[minusbutton cell] setButtonType:NSMomentaryLightButton];

    [[minusbutton cell] setBezelStyle:NSShadowlessSquareBezelStyle];

    [[minusbutton cell] setGradientType:NSGradientConcaveWeak];

    [minusbutton setImagePosition:NSImageOnly];

    [minusbutton setImage:[NSImage imageNamed:@"minusbutton"]];

    [minusbutton setBordered:NO];

    [minusbutton setTarget:master];

    [minusbutton setAction:@selector(minusButtonAction:)];

    [minusbutton setTag:index];

    [self addSubview:minusbutton];

    controlTopPosition = R.origin.y - 8;

}

// allocate the space required for a text layer text view

- (void)tryTextViewForString

{

    controlTopPosition -= 88;

    lastControlType = ctTextView;

}

// add a text layer text view

- (void)addTextViewForString:(NSMutableDictionary *)d key:(NSString *)key displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self bounds];

    pRect = NSMakeRect(0, controlTopPosition - 88, frame.size.width, 88);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addTextViewForString:d key:key displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    [pView setAutoresizingMask:NSViewWidthSizable|NSViewMinYMargin];

    controlTopPosition -= 88;

    lastControlType = ctTextView;

}

// allocate the space required for a text layer scale slider

- (void)trySliderForText

{

    controlTopPosition -= kSliderVerticalAdvance + kVerticalGap;

    lastControlType = ctSlider;

}

// add a text layer scale slider

- (void)addSliderForText:(NSMutableDictionary *)d key:(NSString *)key lo:(CGFloat)lo hi:(CGFloat)hi displayView:(CoreImageView *)v

{

    NSRect pRect, frame;

    ParameterView *pView;

    frame = [self bounds];

    pRect = NSMakeRect(0, controlTopPosition - kSliderVerticalAdvance, frame.size.width - 12, kSliderVerticalAdvance);

    pView = [[ParameterView alloc] initWithFrame:pRect];

    [pView addSliderForText:d key:key lo:lo hi:hi displayView:v master:master];

    [self addSubview:pView]; //"self" now retains pView

    [pView release];

    [pView setAutoresizingMask:NSViewWidthSizable|NSViewMinYMargin];

    controlTopPosition -= kSliderVerticalAdvance + kVerticalGap;

    lastControlType = ctSlider;

}

@end