//
//  ElisTimeLineController.m
//  Elis Colors
//
//  Created by 柳 on 09/09/12.
//  Copyright 2009 __MyCompanyName__. All rights reserved.
//

#import "ElisTimeLineController.h"


@implementation ElisTimeLineController

- (void)awakeFromNib
{
    NSLog(@"Building TimeLine ...");
    
    CGImageRef bar, trblack;
    NSBundle *bundle = [NSBundle mainBundle];
    bar = [[NSBitmapImageRep imageRepWithContentsOfFile:[bundle pathForResource:@"white" ofType:@"jpg"]] CGImage];
    trblack = [[NSBitmapImageRep imageRepWithContentsOfFile:[bundle pathForResource:@"trackgray" ofType:@"jpg"]] CGImage];

    timeLineScale = 10.0; // 10倍表示
    
    rootLayer = [CALayer layer];
    timeLine = [CALayer layer];
    playbackBar = [CALayer layer];
    
    rootLayer.backgroundColor = CGColorCreateGenericGray(0, 0.4f);
    playbackBar.contents = (id)bar;
    playbackBar.frame = CGRectMake(0, 0, 1, 51*TRACK_MAX);
    
    int i;
    CALayer* track;
    for(i = 0; i < TRACK_MAX; i++){
        track = [CALayer layer];
        track.frame = CGRectMake(0, 51*i+1, [_timeLineView frame].size.width, 50);
        track.contents = (id)trblack;
        track.opacity = 0.35;
        track.autoresizingMask = kCALayerWidthSizable;
        [timeLine addSublayer:track];
    }
    timeLine.autoresizingMask = kCALayerWidthSizable;
    
    NSRect r = [_timeLineView frame];
    [_timeLineView setFrame:NSMakeRect(0, 0, 10*60*timeLineScale, 51*TRACK_MAX)];
    rootLayer.frame = *(CGRect*)&r;
    rootLayer.masksToBounds = YES;
    
    [rootLayer addSublayer:timeLine];
    [rootLayer addSublayer:playbackBar];
    [_timeLineView setLayer:rootLayer];
    [_timeLineView setWantsLayer:YES];

    draggingLayer = nil;
    clickedPosition.x = -1;
    dragging = NO;
    _layerFactory = [[ElisAnimationLayerFactory alloc] init];
}

- (void)movePlaybackBar:(float)p
{
    // 自動スクロールはうまくできないので無効にしてある。
    // 再生中にフリーズするよ！　よ！
//    NSRect r = [_timeLineView visibleRect];
//    if(p > r.origin.x){
//        r.origin.x += 2;
//        [_timeLineView scrollPoint:r.origin];
//    }
    [CATransaction begin];
    [CATransaction setValue:[NSNumber numberWithFloat:0.0f] forKey:kCATransactionAnimationDuration];
    CGPoint po = playbackBar.position;
    po.x = p;
    playbackBar.position = po;
    [CATransaction commit];
}

- (void)addMedia:(NSString*)path
{
    CALayer* newLayer = [_mainController createNewLayer:path];
    if(draggingLayer) draggingLayer.opacity = 0.75;
    draggingLayer = newLayer;
    [timeLine addSublayer:newLayer];
}

- (void)dragging:(NSPoint)point
{
    if(draggingLayer == nil) return;
    
    if(stretch == STRETCH_RIGHT){
        CGRect rect = draggingLayer.frame;
        float dx = point.x - rect.origin.x - rect.size.width;
        rect.size.width += dx;
        if([[draggingLayer valueForKey:@"ElisLayer"] canChangeMapping:rect]){
            [self changeLayerFrame:draggingLayer rect:rect];
        }
        return;
    } else if (stretch == STRETCH_LEFT){
        CGRect rect = draggingLayer.frame;
        float dx = point.x - rect.origin.x;
        if([[draggingLayer valueForKey:@"ElisLayer"] canChangeOffset:dx]){
            [[draggingLayer valueForKey:@"ElisLayer"] changeOffset:dx];
            rect.size.width -= dx;
            [self changeLayerFrame:draggingLayer rect:rect];
            [_mainController refresh];
        }
        return;
    }
    
    if(dragging == NO) dragging = YES;
    if(clickedPosition.x == -1){
        point.x -= 25;
        point.y -= 25;
    } else {
        float dx = clickedPosition.x - point.x;
        float dy = clickedPosition.y - point.y;
        point = NSMakePoint(clickedLayerPosition.x - dx, clickedLayerPosition.y - dy);
    }
    [self changeLayerPosition:draggingLayer position:point];
}

- (void)draggingDone
{
    if(draggingLayer == nil) return;
    if(dragging){
        CGPoint point = draggingLayer.position;
        point.y = floor(point.y/51.0) * 51 + 1 + 25; // +25ってどこから出てきた？
        draggingLayer.position = point;
        draggingLayer.opacity = 0.75;
        draggingLayer = nil;
        clickedPosition.x = -1;
        dragging = NO;
//        [_timeLineView setCursorRect:NSZeroRect]; // これなに？
    }
    [_timeLineView setCursorRect:draggingLayer.frame];
    stretch = 0;
}

- (void)changeLayerPosition:(CALayer*)layer position:(NSPoint)point
{
    [CATransaction begin];
    [CATransaction setValue:[NSNumber numberWithFloat:0.0f] forKey:kCATransactionAnimationDuration];
    CGRect r = layer.frame;
    r.origin.x = point.x;
    r.origin.y = point.y;
    layer.frame = r;  // KVOでCALayerに対応してElisLayerも変化
    [CATransaction commit];
    [_mainController refresh]; // ElisLayerの構造が変わったので再描画を要請。ループしないよう注意。
}

- (void)changeLayerFrame:(CALayer*)layer rect:(CGRect)rect
{
    [CATransaction begin];
    [CATransaction setValue:[NSNumber numberWithFloat:0.0f] forKey:kCATransactionAnimationDuration];
    layer.frame = rect;
    [CATransaction commit];
    [_mainController refresh];
}

- (IBAction)add:(id)sender
{
    [self addMedia:@"/Users/yanagi/Desktop/59926_2_m1_1.mp4"];
    NSValue* v = [draggingLayer valueForKey:@"frame"];
    NSRect r = [v rectValue];
    r.origin.x = 0;
//    [draggingLayer willChangeValueForKey:@"frame"];
    [draggingLayer setValue:[NSValue valueWithRect:r] forKey:@"frame"];
//    [draggingLayer didChangeValueForKey:@"frame"];
}

- (void)clicked:(NSPoint)point
{
    if(draggingLayer){
        draggingLayer.opacity = 0.75;
        draggingLayer = nil;
    }
    
    NSArray* layers;
    int i, size;

    layers = [timeLine sublayers];
    size = [layers count];
    dragging = NO;
    
    for(i = TRACK_MAX; i < size; i++){
        if([self isInclude:[layers objectAtIndex:i] point:point]){
            draggingLayer = [layers objectAtIndex:i];
            draggingLayer.opacity = 1.0;
            clickedPosition = point;
            clickedLayerPosition = draggingLayer.frame.origin;
            [_timeLineView setCursorRect:draggingLayer.frame];
            [_tableController createPropertyTable:[draggingLayer valueForKey:@"ElisLayer"]];
            [_tableController reload];
            [_mainController refresh];
            return;
        }
    }
    if(draggingLayer){
        draggingLayer.opacity = 0.75;
        draggingLayer = nil;
    }
    clickedPosition.x = -1; // "レイヤーは選択されていない" という意味。
    stretch = 0;
}

- (void)doubleClicked
{
    if(draggingLayer == nil) return;
    if([[draggingLayer valueForKey:@"have keyframeLayer"] boolValue]){
        NSLog(@"release");
        [[[draggingLayer sublayers] lastObject] removeFromSuperlayer];
        [draggingLayer setValue:[NSNumber numberWithBool:NO] forKey:@"have keyframeLayer"];
        [_layerFactory removeParentLayer]; // 参照を切る = GCで回収されるようにする
        return;
    }
    
    CALayer* keyframeLayer;
    keyframeLayer = [_layerFactory createKeyframeLayerWithLayer:draggingLayer];
    
    float size = draggingLayer.frame.size.width;
    float x;
    CGRect r;
    CALayer *miniLayer;
    
    [draggingLayer addSublayer:keyframeLayer];
    [draggingLayer setValue:[NSNumber numberWithBool:YES] forKey:@"have keyframeLayer"];
    
    if([_tableController isSelected] == NO) return;
    
    for(x = 0.0; x < size-1; x += MINI_LAYER_WIDTH){
        miniLayer = [_layerFactory createKeyframeLevelLayer];
        r = miniLayer.frame;
        r.size.height = 100 * [_tableController getSelectedValueForTime:x];
        r.origin.x = x;
        miniLayer.frame = r;
        [keyframeLayer addSublayer:miniLayer];
    }
        
}

- (void)updateKeyframeLayer
{
    if(draggingLayer == nil) return;
    if([[draggingLayer valueForKey:@"have keyframeLayer"] boolValue] == NO) return;
    
    NSArray* minis;
    minis = [[[draggingLayer sublayers] lastObject] sublayers];
    CALayer* mini;
    CGRect r;
    
    int i, size = [minis count];
    for(i = 0; i < size; i++){
        mini = [minis objectAtIndex:i];
        r = mini.frame;
        r.size.height = 100 * [_tableController getSelectedValueForTime:i * MINI_LAYER_WIDTH];
        mini.frame = r;
    }
}
    
// 左側のマッピングを調整する。(レイヤー内オフセットをいじる)
- (void)stretchLeft
{
    stretch = STRETCH_LEFT;
}

// 右側のマッピングを調整する。(マッピングの範囲を変えるだけ)
- (void)stretchRight
{
    stretch = STRETCH_RIGHT;
}

- (BOOL)isInclude:(CALayer*)layer point:(NSPoint)point
{
    CGRect r = layer.frame;
    return r.origin.x <= point.x && point.x <= r.origin.x + r.size.width
        && r.origin.y <= point.y && point.y <= r.origin.y + r.size.height;
}

- (CALayer*)getSelectLayer
{
    return draggingLayer;
}

- (void)removeSelectLayer
{
    [draggingLayer setValue:nil forKey:@"ElisLayer"];
    draggingLayer = nil;
}

@end