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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER 
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 * 
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 * 
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 * modification, are permitted provided that the following conditions are met: 
 * 
 *   * Redistributions of source code must retain the above copyright notice, 
 *     this list of conditions and the following disclaimer. 
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 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
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 *     may be used to endorse or promote products derived from this software 
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package effectsplayground.control;

import javafx.scene.*;
import javafx.scene.paint.*;
import javafx.scene.shape.*;
import javafx.stage.*;

//@author campbell

def thumbWidth = 20;
def thumbHeight = 12;

class SliderThumb extends CustomNode {
    override protected function create():Node {
        Group {
            cursor: Cursor.HAND
            content: [
                Rectangle {
                    width: thumbWidth
                    height: thumbHeight
                    arcWidth: 7
                    arcHeight: 7
                    fill:LinearGradient {
                        startX: 0
                        startY: 0
                        endX: 0
                        endY: 1
                        stops: [
                            Stop {
                                offset: 0.0
                                color: Color.rgb(107, 107, 107)
                            },
                            Stop {
                                offset: 0.55
                                color: Color.BLACK
                            },
                            Stop {
                                offset: 0.7
                                color: Color.rgb( 75,  75,  75)
                            },
                            Stop {
                                offset: 1.0
                                color: Color.rgb( 23,  23,  23)
                            },
                        ]
                    }
                    stroke:LinearGradient {
                        startX: 0
                        startY: 0
                        endX: 0
                        endY: 1
                        stops: [
                            Stop {
                                offset: 0.0
                                color: Color.rgb(  3,   3,   3)
                            },
                            Stop {
                                offset: 1.0
                                color: Color.rgb( 82,  82,  82)
                            },
                        ]
                    }
                    strokeWidth: 1
                },
                Polygon {
                    translateX: thumbWidth/2-3.8
                    translateY: thumbHeight/2
                    points: [ 0, 0, 3, -3, 3, 3 ]
                    fill: Color.WHITE
                },
                Polygon {
                    translateX: thumbWidth/2+1.8
                    translateY: thumbHeight/2
                    points: [ 3, 0, 0, -3, 0, 3 ]
                    fill: Color.WHITE
                },
            ]
        }
    }
}

package class Slider extends CustomNode {

    public var value = 0.0;
    public var minimum = 0.0;
    public var maximum = 1.0;
    public var width = 150;

    var adjValue = bind (value - minimum)/(maximum - minimum);    // the value adjusted to the range [0,1]
    var origValue = 0.0;

    override protected function create():Node {
        Group {
            content: [
                Rectangle {
                    width: bind width
                    height: 8
                    arcWidth: 10
                    arcHeight: 10
                    fill:LinearGradient {
                        startX: 0
                        startY: 0
                        endX: 0
                        endY: 1
                        stops: [
                            Stop {
                                offset: 0.0
                                color: Color.rgb(172, 172, 172)
                            },
                            Stop {
                                offset: 0.6
                                color: Color.rgb(115, 115, 115)
                            },
                            Stop {
                                offset: 1.0
                                color: Color.rgb(124, 124, 124)
                            },
                        ]
                    }
                    stroke:LinearGradient {
                        startX: 0
                        startY: 0
                        endX: 0
                        endY: 1
                        stops: [
                            Stop {
                                offset: 0.0
                                color: Color.rgb( 15,  15,  15)
                            },
                            Stop {
                                offset: 1.0
                                color: Color.rgb(224, 224, 224)
                            },
                        ]
                    }
                },
                SliderThumb {
                    translateX: bind (adjValue*width) - (thumbWidth/2)
                    translateY: -2
                    onMousePressed:function(e) {
                        origValue = adjValue;
                    }
                    onMouseDragged:function(e) {
                        var v = origValue + (e.dragX/width);
                        if (v < 0) {
                            v = 0;
                        } else if (v > 1) {
                            v = 1;
                        }
                        value = minimum + (v*(maximum-minimum));
                    }
                }
            ]
        }
    }
}

function run() {
    Stage {
        width: 300
        height: 100
        scene:Scene {
            content: [
                Slider { translateX: 20 translateY: 20 }
            ]
        }
    }
}