ZJONSSON/index.html

## index.html
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script>
<script  src="svg_slides.js"></script>
<script src="svg_interact.js"></script>
</head>
<body>
<script>

    // There are probably better ways of loading the SVG, but this is one example I found

    d3.xml("test.svg", "image/svg+xml", function(xml) {
        d3.select("body").node().appendChild(xml.documentElement);

        svg=d3.select("body").select("svg");
           console.log(svg[0][0])
        slides = svg_slides(svg,1500);
         setTimeout(function() { svg_interact(svg);console.log("OK")},100);


        // Lets test the slide scales - put a bouncing ball on slide id 3
        s = slides[3];
        circle = svg.append("svg:circle")
            .attr("cx",s.scale_x(500)).attr("cy",s.scale_y(500))
            .attr("r",20)
            .style("fill","steelblue");

        next = 500;

        function bounce() {
            next = -next;
            circle.transition().duration(2500).attr("cx",s.scale_x(500+next))
            .each("end",bounce);
        }
        bounce();

    });
</script>
</body>
</html>

## svg_interact.js
function svg_interact(svg,p) {
    var p = p ? p : {},
        zoom_speed = p.zoom_speed ? p.zoom_speed : 1.15,
        viewBox = svg[0][0].viewBox.baseVal;
        panning = null,
        current_mouse = null;


    /* Panning moves the viewbox */

    function mousemove(){
        current_mouse = d3.svg.mouse(this);
        if (panning)  {
            viewBox.x +=(panning[0] -current_mouse[0]);
            viewBox.y += (panning[1] - current_mouse[1]);
        }
    };

    svg.on("mousemove",mousemove)
    svg.on("mousedown", function() { panning = d3.svg.mouse(this)});
    d3.select(window).on("mouseup",function () { panning = null;})
    svg[0][0].ondragstart = function() { return false }  // Firefox fix


    /* Zoom with mousewheel - keeping mouse position in same location*/

    function wheel(event) {
        var delta = 0;
        if (!event) event = window.event;
        if (event.wheelDelta) {
            delta = event.wheelDelta/120;
        } else if (event.detail) {
            delta = -event.detail/3;
        }
        move = (delta<0) ? -delta * zoom_speed : 1/(delta*zoom_speed);

        viewBox.x=(current_mouse[0]-(current_mouse[0]-viewBox.x)*move);
        viewBox.y=(current_mouse[1]-(current_mouse[1]-viewBox.y)*move);
        viewBox.height = viewBox.height * move;
        viewBox.width = viewBox.width * move;
        };


    svg[0][0].addEventListener('DOMMouseScroll', wheel, false);
    svg[0][0].onmousewheel = wheel;
    document.onmousewheel = function () { return null};


    return svg;
}

## svg_slides.js
/*  This is a basic attempt to use d3 to process transitional slides from SVG files (i.e. Inkscape)
    The main objective here was to keep everything as simple as possible

    To create a slide, simply create a rectangle in inkscape where you set the object ID to "slide_" + a number
    This number can be either integer or float, so "slide_1","slide_2" and "slide_3.56" all work.

    The script sorts the slide-numbers and transitions between slides based on the final sorted order.

    It is easy to add slides into a pre-existing ordering, simply by chosing a floating number in the middle of the two
    Example: If we want to add slide between "slide_2" and "slide_3" we simply add a rectancle called "slide_2.5"

    Keyboard definitions:
        Right arrow:    next slide
        Left arrow:     previous slide
        Home:           first slide
        End:            last slide

    Please be aware that you need to remove any layer transition is the svg file (or put the layer transition to 0,0)

    Each slide has a scale_x and scale_y functions that have pre-set range to the slide boundaries and a default
    domain of [0,1000], allowing the user to position objects easily onto each slide.


    ziggy.jonsson.nyc@gmail.com
*/


function svg_slides(svg,delay) {
    var slides={},
        slide = 0,
        delay = delay ? delay : 3500;

    svg.attr("preserveAspectRatio","xMidYid meet");

    rects = svg.selectAll("rect")[0];

    for (i=0;i<rects.length;i++) {
        id = rects[i].id;
        console.log(id);
        if (id.slice(0,6)=='slide_') {
            slides[id.slice(6)]=rects[i]
            rects[i].scale_x = d3.scale.linear().range([rects[i].x.baseVal.value,rects[i].x.baseVal.value+rects[i].width.baseVal.value]).domain([0,1000]);
            rects[i].scale_y = d3.scale.linear().range([rects[i].y.baseVal.value,rects[i].y.baseVal.value+rects[i].height.baseVal.value]).domain([0,1000]);
            }

    }

    keys = Object.keys(slides).sort();
    slides.keys = keys;

    function next_slide()  {
        svg.transition().duration(delay).attr("viewBox",slides[keys[slide]].x.baseVal.value+" "+slides[keys[slide]].y.baseVal.value+" "+slides[keys[slide]].width.baseVal.value+" "+slides[keys[slide]].height.baseVal.value);
    }

    d3.select("body").on("touchmove", function() { if(slide<keys.length-1) {slide++; console.log(slide);}});

    d3.select(window).on("keydown", function() {
        switch (d3.event.keyCode) {
          case 37: {if (slide>0) {slide=slide-1; console.log(slide);next_slide()};break}
          case 39: {if(slide<keys.length-1) {slide++; console.log(slide);next_slide()};break}
          case 36: {slide = 0;next_slide();break}
          case 35: {slide = keys.length -1; next_slide();break}
        }

     });

    // Start with the first slide
    next_slide();
    return slides
}

## test.svg

      
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              test.svg
            
          
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	<html>
	<head>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script>
	<script src="svg_slides.js"></script>
	<script src="svg_interact.js"></script>
	</head>
	<body>
	<script>

	// There are probably better ways of loading the SVG, but this is one example I found

	d3.xml("test.svg", "image/svg+xml", function(xml) {
	d3.select("body").node().appendChild(xml.documentElement);

	svg=d3.select("body").select("svg");
	console.log(svg[0][0])
	slides = svg_slides(svg,1500);
	setTimeout(function() { svg_interact(svg);console.log("OK")},100);


	// Lets test the slide scales - put a bouncing ball on slide id 3
	s = slides[3];
	circle = svg.append("svg:circle")
	.attr("cx",s.scale_x(500)).attr("cy",s.scale_y(500))
	.attr("r",20)
	.style("fill","steelblue");

	next = 500;

	function bounce() {
	next = -next;
	circle.transition().duration(2500).attr("cx",s.scale_x(500+next))
	.each("end",bounce);
	}
	bounce();

	});
	</script>
	</body>
	</html>
	function svg_interact(svg,p) {
	var p = p ? p : {},
	zoom_speed = p.zoom_speed ? p.zoom_speed : 1.15,
	viewBox = svg[0][0].viewBox.baseVal;
	panning = null,
	current_mouse = null;


	/* Panning moves the viewbox */

	function mousemove(){
	current_mouse = d3.svg.mouse(this);
	if (panning) {
	viewBox.x +=(panning[0] -current_mouse[0]);
	viewBox.y += (panning[1] - current_mouse[1]);
	}
	};

	svg.on("mousemove",mousemove)
	svg.on("mousedown", function() { panning = d3.svg.mouse(this)});
	d3.select(window).on("mouseup",function () { panning = null;})
	svg[0][0].ondragstart = function() { return false } // Firefox fix


	/* Zoom with mousewheel - keeping mouse position in same location*/

	function wheel(event) {
	var delta = 0;
	if (!event) event = window.event;
	if (event.wheelDelta) {
	delta = event.wheelDelta/120;
	} else if (event.detail) {
	delta = -event.detail/3;
	}
	move = (delta<0) ? -delta * zoom_speed : 1/(delta*zoom_speed);

	viewBox.x=(current_mouse[0]-(current_mouse[0]-viewBox.x)*move);
	viewBox.y=(current_mouse[1]-(current_mouse[1]-viewBox.y)*move);
	viewBox.height = viewBox.height * move;
	viewBox.width = viewBox.width * move;
	};


	svg[0][0].addEventListener('DOMMouseScroll', wheel, false);
	svg[0][0].onmousewheel = wheel;
	document.onmousewheel = function () { return null};



	return svg;
	}
	/* This is a basic attempt to use d3 to process transitional slides from SVG files (i.e. Inkscape)
	The main objective here was to keep everything as simple as possible

	To create a slide, simply create a rectangle in inkscape where you set the object ID to "slide_" + a number
	This number can be either integer or float, so "slide_1","slide_2" and "slide_3.56" all work.

	The script sorts the slide-numbers and transitions between slides based on the final sorted order.

	It is easy to add slides into a pre-existing ordering, simply by chosing a floating number in the middle of the two
	Example: If we want to add slide between "slide_2" and "slide_3" we simply add a rectancle called "slide_2.5"

	Keyboard definitions:
	Right arrow: next slide
	Left arrow: previous slide
	Home: first slide
	End: last slide

	Please be aware that you need to remove any layer transition is the svg file (or put the layer transition to 0,0)

	Each slide has a scale_x and scale_y functions that have pre-set range to the slide boundaries and a default
	domain of [0,1000], allowing the user to position objects easily onto each slide.


	ziggy.jonsson.nyc@gmail.com
	*/


	function svg_slides(svg,delay) {
	var slides={},
	slide = 0,
	delay = delay ? delay : 3500;

	svg.attr("preserveAspectRatio","xMidYid meet");

	rects = svg.selectAll("rect")[0];

	for (i=0;i<rects.length;i++) {
	id = rects[i].id;
	console.log(id);
	if (id.slice(0,6)=='slide_') {
	slides[id.slice(6)]=rects[i]
	rects[i].scale_x = d3.scale.linear().range([rects[i].x.baseVal.value,rects[i].x.baseVal.value+rects[i].width.baseVal.value]).domain([0,1000]);
	rects[i].scale_y = d3.scale.linear().range([rects[i].y.baseVal.value,rects[i].y.baseVal.value+rects[i].height.baseVal.value]).domain([0,1000]);
	}

	}

	keys = Object.keys(slides).sort();
	slides.keys = keys;

	function next_slide() {
	svg.transition().duration(delay).attr("viewBox",slides[keys[slide]].x.baseVal.value+" "+slides[keys[slide]].y.baseVal.value+" "+slides[keys[slide]].width.baseVal.value+" "+slides[keys[slide]].height.baseVal.value);
	}

	d3.select("body").on("touchmove", function() { if(slide<keys.length-1) {slide++; console.log(slide);}});

	d3.select(window).on("keydown", function() {
	switch (d3.event.keyCode) {
	case 37: {if (slide>0) {slide=slide-1; console.log(slide);next_slide()};break}
	case 39: {if(slide<keys.length-1) {slide++; console.log(slide);next_slide()};break}
	case 36: {slide = 0;next_slide();break}
	case 35: {slide = keys.length -1; next_slide();break}
	}

	});

	// Start with the first slide
	next_slide();
	return slides
	}