User:Lucia Dossin/Protyping/Modules/SVG
< User:Lucia Dossin | Protyping
Revision as of 17:08, 6 July 2014 by Lucia Dossin (talk | contribs)
Deep Blue
Changed the code sligthly. As you scroll, the rectangle changes its color, going to medium blue to dark blue as you go deeper into it. It then goes to black and finally to white.
Included change opacity function too, but ended up not using it.
Demo: http://headroom.pzwart.wdka.hro.nl/~ldossin/deep-blue/drawing.svg
Below, the path:
SVG code
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->
<svg
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:cc="http://creativecommons.org/ns#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns="http://www.w3.org/2000/svg"
xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
xmlns:xlink="http://www.w3.org/1999/xlink"
id="svg2"
version="1.1"
inkscape:version="0.48.4 r9939"
sodipodi:docname="New document 1">
<script xlink:href="SVGPan.js"/>
<defs
id="defs4">
<inkscape:perspective
sodipodi:type="inkscape:persp3d"
inkscape:vp_x="0 : 526.18109 : 1"
inkscape:vp_y="0 : 1000 : 0"
inkscape:vp_z="744.09448 : 526.18109 : 1"
inkscape:persp3d-origin="372.04724 : 350.78739 : 1"
id="perspective2985" />
</defs>
<sodipodi:namedview
id="base"
pagecolor="#ffffff"
bordercolor="#666666"
borderopacity="1.0"
inkscape:pageopacity="0.0"
inkscape:pageshadow="2"
inkscape:zoom="0.35"
inkscape:cx="366.42857"
inkscape:cy="640"
inkscape:document-units="px"
inkscape:current-layer="layer1"
showgrid="false"
inkscape:window-width="1280"
inkscape:window-height="781"
inkscape:window-x="0"
inkscape:window-y="0"
inkscape:window-maximized="1" />
<metadata
id="metadata7">
<rdf:RDF>
<cc:Work
rdf:about="">
<dc:format>image/svg+xml</dc:format>
<dc:type
rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
<dc:title></dc:title>
</cc:Work>
</rdf:RDF>
</metadata>
<g
inkscape:label="Layer 1"
inkscape:groupmode="layer"
id="viewport">
<rect
style="fill-rule:evenodd;stroke:#000000;stroke-width:0px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
id="rect3003"
width="240"
height="180"
x="640"
y="390" />
</g>
</svg>
JS code (original by Andrea Leofreddi, http://code.google.com/p/svgpan/)
/**
* SVGPan library 1.2.2
* ======================
*
* Given an unique existing element with id "viewport" (or when missing, the
* first g-element), including the the library into any SVG adds the following
* capabilities:
*
* - Mouse panning
* - Mouse zooming (using the wheel)
* - Object dragging
*
* You can configure the behaviour of the pan/zoom/drag with the variables
* listed in the CONFIGURATION section of this file.
*
* Known issues:
*
* - Zooming (while panning) on Safari has still some issues
*
* Releases:
*
* 1.2.2, Tue Aug 30 17:21:56 CEST 2011, Andrea Leofreddi
* - Fixed viewBox on root tag (#7)
* - Improved zoom speed (#2)
*
* 1.2.1, Mon Jul 4 00:33:18 CEST 2011, Andrea Leofreddi
* - Fixed a regression with mouse wheel (now working on Firefox 5)
* - Working with viewBox attribute (#4)
* - Added "use strict;" and fixed resulting warnings (#5)
* - Added configuration variables, dragging is disabled by default (#3)
*
* 1.2, Sat Mar 20 08:42:50 GMT 2010, Zeng Xiaohui
* Fixed a bug with browser mouse handler interaction
*
* 1.1, Wed Feb 3 17:39:33 GMT 2010, Zeng Xiaohui
* Updated the zoom code to support the mouse wheel on Safari/Chrome
*
* 1.0, Andrea Leofreddi
* First release
*
* This code is licensed under the following BSD license:
*
* Copyright 2009-2010 Andrea Leofreddi <a.leofreddi@itcharm.com>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY Andrea Leofreddi ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Andrea Leofreddi OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of Andrea Leofreddi.
*/
"use strict";
/// CONFIGURATION
/// ====>
var enablePan = 1; // 1 or 0: enable or disable panning (default enabled)
var enableZoom = 1; // 1 or 0: enable or disable zooming (default enabled)
var enableDrag = 0; // 1 or 0: enable or disable dragging (default disabled)
var zoomScale = 0.2; // Zoom sensitivity
/// <====
/// END OF CONFIGURATION
var root = document.documentElement;
var state = 'none', svgRoot = null, stateTarget, stateOrigin, stateTf;
setupHandlers(root);
/**
* Register handlers
*/
function setupHandlers(root){
setAttributes(root, {
"onmouseup" : "handleMouseUp(evt)",
"onmousedown" : "handleMouseDown(evt)",
"onmousemove" : "handleMouseMove(evt)",
//"onmouseout" : "handleMouseUp(evt)", // Decomment this to stop the pan functionality when dragging out of the SVG element
});
if(navigator.userAgent.toLowerCase().indexOf('webkit') >= 0)
window.addEventListener('mousewheel', handleMouseWheel, false); // Chrome/Safari
else
window.addEventListener('DOMMouseScroll', handleMouseWheel, false); // Others
}
/**
* Retrieves the root element for SVG manipulation. The element is then cached into the svgRoot global variable.
*/
function getRoot(root) {
if(svgRoot == null) {
var r = root.getElementById("viewport") ? root.getElementById("viewport") : root.documentElement, t = r;
while(t != root) {
if(t.getAttribute("viewBox")) {
setCTM(r, t.getCTM());
t.removeAttribute("viewBox");
}
t = t.parentNode;
}
svgRoot = r;
}
return svgRoot;
}
/**
* Instance an SVGPoint object with given event coordinates.
*/
function getEventPoint(evt) {
var p = root.createSVGPoint();
p.x = evt.clientX;
p.y = evt.clientY;
return p;
}
/**
* Changes the color of an element
*/
var blues = ["#050505","#0a0a0a","#0f0f0f", "#141414", "#191919", "#1e1e1e", "#232323", "#282828", "#2d2d2d", "#323232", "#373737", "#3c3c3c", "#414141", "#464646", "#4b4b4b", "#505050", "#555555", "#5a5a5a", "#5f5f5f", "#646464", "#696969", "#6e6e6e", "#737373", "#787878", "#7d7d7d", "#828282", "#878787", "#8c8c8c", "#919191", "#969696", "#9b9b9b", "#a0a0a0", "#a5a5a5", "#aaaaaa", "#afafaf", "#b4b4b4", "#b9b9b9", "#bebebe", "#c3c3c3", "#c8c8c8", "#cdcdcd", "#d2d2d2", "#d7d7d7", "#e1e1e1", "#e6e6e6", "#ebebeb", "#f0f0f0", "#f5f5f5", "#fafafa", "#ffffff","#fafaff","#f5f5ff","#f0f0ff","#ebebff","#e6e6ff","#e1e1ff","#dcdcff","#d7d7ff","#d2d2ff","#cdcdff","#c8c8ff","#c3c3ff","#bebeff","#b9b9ff","#b4b4ff","#afafff","#aaaaff","#a5a5ff","#a0a0ff","#9b9bff","#9696ff","#9191ff","#8c8cff","#8787ff","#8282ff","#7d7dff","#7878ff","#7373ff","#6e6eff","#6969ff","#6464ff","#5f5fff","#5a5aff","#5555ff","#5050ff","#4b4bff","#4646ff","#4141ff","#3c3cff","#3737ff","#3232ff","#2d2dff","#2828ff","#2323ff","#1e1eff","#1919ff","#1414ff","#0f0fff","#0a0aff","#0505ff","#0000ff","#0000fa","#0000f5","#0000f0","#0000eb","#0000e6","#0000e1","#0000dc","#0000d7","#0000d2","#0000cd","#0000c8","#0000c3","#0000be","#0000b9","#0000b4","#0000af","#0000aa","#0000a5","#0000a0","#00009b","#000096","#000091","#00008c","#000087","#000082","#00007d","#000078","#000073","#00006e","#000069","#000064","#00005f","#00005a","#000055","#000050","#00004b","#000046","#000041","#00003c","#000037","#000032","#00002d","#000028","#000023","#00001e","#000019","#000014","#00000f","#00000a","#0000005","#000000"];
var it = Math.floor(blues.length/2);
//initial color setting
var init_svg = document.getElementById("svg2");
var init_color = blues[it];
init_svg.setAttribute("fill", init_color);
function setColor(element, move){
if (move > 1) {
it++;
}else{
it--;
}
if (it < 0){
it = blues.length-1;
}
if (it > blues.length) {
it = 0;
}
element.setAttribute("fill", blues[it]);
}
/**
* Changes the opacity of an element
*/
var opac = .5;
function setOpacity(element, amount){
opac = opac * amount;
element.setAttribute("fill-opacity", opac);
}
/**
* Sets the current transform matrix of an element.
*/
function setCTM(element, matrix) {
var s = "matrix(" + matrix.a + "," + matrix.b + "," + matrix.c + "," + matrix.d + "," + matrix.e + "," + matrix.f + ")";
element.setAttribute("transform", s);
}
/**
* Dumps a matrix to a string (useful for debug).
*/
function dumpMatrix(matrix) {
var s = "[ " + matrix.a + ", " + matrix.c + ", " + matrix.e + "\n " + matrix.b + ", " + matrix.d + ", " + matrix.f + "\n 0, 0, 1 ]";
return s;
}
/**
* Sets attributes of an element.
*/
function setAttributes(element, attributes){
for (var i in attributes)
element.setAttributeNS(null, i, attributes[i]);
}
/**
* Handle mouse wheel event.
*/
function handleMouseWheel(evt) {
if(!enableZoom)
return;
if(evt.preventDefault)
evt.preventDefault();
evt.returnValue = false;
var svgDoc = evt.target.ownerDocument;
var delta;
if(evt.wheelDelta)
delta = evt.wheelDelta / 360; // Chrome/Safari
else
delta = evt.detail / -9; // Mozilla
var z = Math.pow(1 + zoomScale, delta);
var g = getRoot(svgDoc);
var p = getEventPoint(evt);
p = p.matrixTransform(g.getCTM().inverse());
// Compute new scale matrix in current mouse position
var k = root.createSVGMatrix().translate(p.x, p.y).scale(z).translate(-p.x, -p.y);
setCTM(g, g.getCTM().multiply(k));
if(typeof(stateTf) == "undefined")
stateTf = g.getCTM().inverse();
stateTf = stateTf.multiply(k.inverse());
//setOpacity(g, z);
setColor(g, z);
}
/**
* Handle mouse move event.
*/
function handleMouseMove(evt) {
if(evt.preventDefault)
evt.preventDefault();
evt.returnValue = false;
var svgDoc = evt.target.ownerDocument;
var g = getRoot(svgDoc);
if(state == 'pan' && enablePan) {
// Pan mode
var p = getEventPoint(evt).matrixTransform(stateTf);
setCTM(g, stateTf.inverse().translate(p.x - stateOrigin.x, p.y - stateOrigin.y));
} else if(state == 'drag' && enableDrag) {
// Drag mode
var p = getEventPoint(evt).matrixTransform(g.getCTM().inverse());
setCTM(stateTarget, root.createSVGMatrix().translate(p.x - stateOrigin.x, p.y - stateOrigin.y).multiply(g.getCTM().inverse()).multiply(stateTarget.getCTM()));
stateOrigin = p;
}
}
/**
* Handle click event.
*/
function handleMouseDown(evt) {
if(evt.preventDefault)
evt.preventDefault();
evt.returnValue = false;
var svgDoc = evt.target.ownerDocument;
var g = getRoot(svgDoc);
if(
evt.target.tagName == "svg"
|| !enableDrag // Pan anyway when drag is disabled and the user clicked on an element
) {
// Pan mode
state = 'pan';
stateTf = g.getCTM().inverse();
stateOrigin = getEventPoint(evt).matrixTransform(stateTf);
} else {
// Drag mode
state = 'drag';
stateTarget = evt.target;
stateTf = g.getCTM().inverse();
stateOrigin = getEventPoint(evt).matrixTransform(stateTf);
}
}
/**
* Handle mouse button release event.
*/
function handleMouseUp(evt) {
if(evt.preventDefault)
evt.preventDefault();
evt.returnValue = false;
var svgDoc = evt.target.ownerDocument;
if(state == 'pan' || state == 'drag') {
// Quit pan mode
state = '';
}
}