root / trunk / web / dojo / dojox / gfx.js.uncompressed.js @ 12
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/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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/*
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This is an optimized version of Dojo, built for deployment and not for
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development. To get sources and documentation, please visit:
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http://dojotoolkit.org
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*/
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if(!dojo._hasResource["dojox.gfx.matrix"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. |
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dojo._hasResource["dojox.gfx.matrix"] = true; |
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dojo.provide("dojox.gfx.matrix");
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(function(){
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var m = dojox.gfx.matrix;
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// candidates for dojox.math:
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var _degToRadCache = {};
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m._degToRad = function(degree){ |
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return _degToRadCache[degree] || (_degToRadCache[degree] = (Math.PI * degree / 180)); |
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}; |
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m._radToDeg = function(radian){ return radian / Math.PI * 180; }; |
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m.Matrix2D = function(arg){ |
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// summary: a 2D matrix object
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// description: Normalizes a 2D matrix-like object. If arrays is passed,
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// all objects of the array are normalized and multiplied sequentially.
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// arg: Object
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// a 2D matrix-like object, a number, or an array of such objects
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if(arg){
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if(typeof arg == "number"){ |
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this.xx = this.yy = arg; |
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}else if(arg instanceof Array){ |
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if(arg.length > 0){ |
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var matrix = m.normalize(arg[0]); |
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// combine matrices
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for(var i = 1; i < arg.length; ++i){ |
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var l = matrix, r = dojox.gfx.matrix.normalize(arg[i]);
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matrix = new m.Matrix2D();
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matrix.xx = l.xx * r.xx + l.xy * r.yx; |
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matrix.xy = l.xx * r.xy + l.xy * r.yy; |
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matrix.yx = l.yx * r.xx + l.yy * r.yx; |
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matrix.yy = l.yx * r.xy + l.yy * r.yy; |
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matrix.dx = l.xx * r.dx + l.xy * r.dy + l.dx; |
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matrix.dy = l.yx * r.dx + l.yy * r.dy + l.dy; |
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} |
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dojo.mixin(this, matrix);
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} |
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}else{
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dojo.mixin(this, arg);
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} |
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} |
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}; |
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// the default (identity) matrix, which is used to fill in missing values
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dojo.extend(m.Matrix2D, {xx: 1, xy: 0, yx: 0, yy: 1, dx: 0, dy: 0});
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dojo.mixin(m, {
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// summary: class constants, and methods of dojox.gfx.matrix
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// matrix constants
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// identity: dojox.gfx.matrix.Matrix2D
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// an identity matrix constant: identity * (x, y) == (x, y)
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identity: new m.Matrix2D(), |
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// flipX: dojox.gfx.matrix.Matrix2D
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// a matrix, which reflects points at x = 0 line: flipX * (x, y) == (-x, y)
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flipX: new m.Matrix2D({xx: -1}), |
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// flipY: dojox.gfx.matrix.Matrix2D
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// a matrix, which reflects points at y = 0 line: flipY * (x, y) == (x, -y)
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flipY: new m.Matrix2D({yy: -1}), |
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// flipXY: dojox.gfx.matrix.Matrix2D
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// a matrix, which reflects points at the origin of coordinates: flipXY * (x, y) == (-x, -y)
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flipXY: new m.Matrix2D({xx: -1, yy: -1}), |
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// matrix creators
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translate: function(a, b){ |
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// summary: forms a translation matrix
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// description: The resulting matrix is used to translate (move) points by specified offsets.
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// a: Number: an x coordinate value
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// b: Number: a y coordinate value
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if(arguments.length > 1){ |
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return new m.Matrix2D({dx: a, dy: b}); // dojox.gfx.matrix.Matrix2D |
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} |
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// branch
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// a: dojox.gfx.Point: a point-like object, which specifies offsets for both dimensions
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// b: null
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return new m.Matrix2D({dx: a.x, dy: a.y}); // dojox.gfx.matrix.Matrix2D |
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}, |
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scale: function(a, b){ |
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// summary: forms a scaling matrix
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// description: The resulting matrix is used to scale (magnify) points by specified offsets.
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// a: Number: a scaling factor used for the x coordinate
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// b: Number: a scaling factor used for the y coordinate
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if(arguments.length > 1){ |
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return new m.Matrix2D({xx: a, yy: b}); // dojox.gfx.matrix.Matrix2D |
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} |
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if(typeof a == "number"){ |
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// branch
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// a: Number: a uniform scaling factor used for the both coordinates
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// b: null
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return new m.Matrix2D({xx: a, yy: a}); // dojox.gfx.matrix.Matrix2D |
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} |
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// branch
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// a: dojox.gfx.Point: a point-like object, which specifies scale factors for both dimensions
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// b: null
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return new m.Matrix2D({xx: a.x, yy: a.y}); // dojox.gfx.matrix.Matrix2D |
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}, |
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rotate: function(angle){ |
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// summary: forms a rotating matrix
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// description: The resulting matrix is used to rotate points
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// around the origin of coordinates (0, 0) by specified angle.
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// angle: Number: an angle of rotation in radians (>0 for CW)
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var c = Math.cos(angle);
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var s = Math.sin(angle);
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return new m.Matrix2D({xx: c, xy: -s, yx: s, yy: c}); // dojox.gfx.matrix.Matrix2D |
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}, |
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rotateg: function(degree){ |
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// summary: forms a rotating matrix
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// description: The resulting matrix is used to rotate points
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// around the origin of coordinates (0, 0) by specified degree.
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// See dojox.gfx.matrix.rotate() for comparison.
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// degree: Number: an angle of rotation in degrees (>0 for CW)
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return m.rotate(m._degToRad(degree)); // dojox.gfx.matrix.Matrix2D |
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}, |
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skewX: function(angle) { |
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// summary: forms an x skewing matrix
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// description: The resulting matrix is used to skew points in the x dimension
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// around the origin of coordinates (0, 0) by specified angle.
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// angle: Number: an skewing angle in radians
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return new m.Matrix2D({xy: Math.tan(angle)}); // dojox.gfx.matrix.Matrix2D |
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}, |
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skewXg: function(degree){ |
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// summary: forms an x skewing matrix
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// description: The resulting matrix is used to skew points in the x dimension
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// around the origin of coordinates (0, 0) by specified degree.
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// See dojox.gfx.matrix.skewX() for comparison.
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// degree: Number: an skewing angle in degrees
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return m.skewX(m._degToRad(degree)); // dojox.gfx.matrix.Matrix2D |
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}, |
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skewY: function(angle){ |
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// summary: forms a y skewing matrix
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// description: The resulting matrix is used to skew points in the y dimension
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// around the origin of coordinates (0, 0) by specified angle.
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// angle: Number: an skewing angle in radians
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return new m.Matrix2D({yx: Math.tan(angle)}); // dojox.gfx.matrix.Matrix2D |
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}, |
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skewYg: function(degree){ |
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// summary: forms a y skewing matrix
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// description: The resulting matrix is used to skew points in the y dimension
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// around the origin of coordinates (0, 0) by specified degree.
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// See dojox.gfx.matrix.skewY() for comparison.
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// degree: Number: an skewing angle in degrees
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return m.skewY(m._degToRad(degree)); // dojox.gfx.matrix.Matrix2D |
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}, |
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reflect: function(a, b){ |
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// summary: forms a reflection matrix
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// description: The resulting matrix is used to reflect points around a vector,
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// which goes through the origin.
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// a: dojox.gfx.Point: a point-like object, which specifies a vector of reflection
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// b: null
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if(arguments.length == 1){ |
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b = a.y; |
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a = a.x; |
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} |
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// branch
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// a: Number: an x coordinate value
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// b: Number: a y coordinate value
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// make a unit vector
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var a2 = a * a, b2 = b * b, n2 = a2 + b2, xy = 2 * a * b / n2; |
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return new m.Matrix2D({xx: 2 * a2 / n2 - 1, xy: xy, yx: xy, yy: 2 * b2 / n2 - 1}); // dojox.gfx.matrix.Matrix2D |
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}, |
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project: function(a, b){ |
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// summary: forms an orthogonal projection matrix
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// description: The resulting matrix is used to project points orthogonally on a vector,
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// which goes through the origin.
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// a: dojox.gfx.Point: a point-like object, which specifies a vector of projection
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// b: null
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if(arguments.length == 1){ |
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b = a.y; |
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a = a.x; |
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} |
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// branch
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// a: Number: an x coordinate value
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// b: Number: a y coordinate value
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// make a unit vector
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var a2 = a * a, b2 = b * b, n2 = a2 + b2, xy = a * b / n2;
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return new m.Matrix2D({xx: a2 / n2, xy: xy, yx: xy, yy: b2 / n2}); // dojox.gfx.matrix.Matrix2D |
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}, |
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// ensure matrix 2D conformance
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normalize: function(matrix){ |
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// summary: converts an object to a matrix, if necessary
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// description: Converts any 2D matrix-like object or an array of
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// such objects to a valid dojox.gfx.matrix.Matrix2D object.
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// matrix: Object: an object, which is converted to a matrix, if necessary
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return (matrix instanceof m.Matrix2D) ? matrix : new m.Matrix2D(matrix); // dojox.gfx.matrix.Matrix2D |
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}, |
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// common operations
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clone: function(matrix){ |
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// summary: creates a copy of a 2D matrix
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// matrix: dojox.gfx.matrix.Matrix2D: a 2D matrix-like object to be cloned
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var obj = new m.Matrix2D(); |
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for(var i in matrix){ |
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if(typeof(matrix[i]) == "number" && typeof(obj[i]) == "number" && obj[i] != matrix[i]) obj[i] = matrix[i]; |
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} |
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return obj; // dojox.gfx.matrix.Matrix2D |
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}, |
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invert: function(matrix){ |
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// summary: inverts a 2D matrix
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// matrix: dojox.gfx.matrix.Matrix2D: a 2D matrix-like object to be inverted
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var M = m.normalize(matrix),
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D = M.xx * M.yy - M.xy * M.yx, |
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M = new m.Matrix2D({
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xx: M.yy/D, xy: -M.xy/D, |
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yx: -M.yx/D, yy: M.xx/D, |
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dx: (M.xy * M.dy - M.yy * M.dx) / D,
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dy: (M.yx * M.dx - M.xx * M.dy) / D
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}); |
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return M; // dojox.gfx.matrix.Matrix2D |
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}, |
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_multiplyPoint: function(matrix, x, y){ |
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// summary: applies a matrix to a point
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// matrix: dojox.gfx.matrix.Matrix2D: a 2D matrix object to be applied
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// x: Number: an x coordinate of a point
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// y: Number: a y coordinate of a point
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return {x: matrix.xx * x + matrix.xy * y + matrix.dx, y: matrix.yx * x + matrix.yy * y + matrix.dy}; // dojox.gfx.Point |
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}, |
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multiplyPoint: function(matrix, /* Number||Point */ a, /* Number, optional */ b){ |
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// summary: applies a matrix to a point
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// matrix: dojox.gfx.matrix.Matrix2D: a 2D matrix object to be applied
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// a: Number: an x coordinate of a point
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// b: Number: a y coordinate of a point
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var M = m.normalize(matrix);
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if(typeof a == "number" && typeof b == "number"){ |
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return m._multiplyPoint(M, a, b); // dojox.gfx.Point |
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} |
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// branch
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// matrix: dojox.gfx.matrix.Matrix2D: a 2D matrix object to be applied
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// a: dojox.gfx.Point: a point
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// b: null
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return m._multiplyPoint(M, a.x, a.y); // dojox.gfx.Point |
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}, |
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multiply: function(matrix){ |
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// summary: combines matrices by multiplying them sequentially in the given order
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// matrix: dojox.gfx.matrix.Matrix2D...: a 2D matrix-like object,
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// all subsequent arguments are matrix-like objects too
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var M = m.normalize(matrix);
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// combine matrices
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for(var i = 1; i < arguments.length; ++i){ |
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var l = M, r = m.normalize(arguments[i]); |
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M = new m.Matrix2D();
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M.xx = l.xx * r.xx + l.xy * r.yx; |
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M.xy = l.xx * r.xy + l.xy * r.yy; |
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M.yx = l.yx * r.xx + l.yy * r.yx; |
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M.yy = l.yx * r.xy + l.yy * r.yy; |
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M.dx = l.xx * r.dx + l.xy * r.dy + l.dx; |
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M.dy = l.yx * r.dx + l.yy * r.dy + l.dy; |
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} |
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return M; // dojox.gfx.matrix.Matrix2D |
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}, |
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// high level operations
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_sandwich: function(matrix, x, y){ |
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// summary: applies a matrix at a centrtal point
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// matrix: dojox.gfx.matrix.Matrix2D: a 2D matrix-like object, which is applied at a central point
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// x: Number: an x component of the central point
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// y: Number: a y component of the central point
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return m.multiply(m.translate(x, y), matrix, m.translate(-x, -y)); // dojox.gfx.matrix.Matrix2D |
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}, |
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scaleAt: function(a, b, c, d){ |
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// summary: scales a picture using a specified point as a center of scaling
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// description: Compare with dojox.gfx.matrix.scale().
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// a: Number: a scaling factor used for the x coordinate
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// b: Number: a scaling factor used for the y coordinate
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// c: Number: an x component of a central point
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// d: Number: a y component of a central point
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// accepts several signatures:
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// 1) uniform scale factor, Point
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// 2) uniform scale factor, x, y
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// 3) x scale, y scale, Point
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// 4) x scale, y scale, x, y
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switch(arguments.length){ |
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case 4: |
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// a and b are scale factor components, c and d are components of a point
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return m._sandwich(m.scale(a, b), c, d); // dojox.gfx.matrix.Matrix2D |
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case 3: |
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if(typeof c == "number"){ |
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// branch
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// a: Number: a uniform scaling factor used for both coordinates
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// b: Number: an x component of a central point
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// c: Number: a y component of a central point
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// d: null
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return m._sandwich(m.scale(a), b, c); // dojox.gfx.matrix.Matrix2D |
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} |
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// branch
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// a: Number: a scaling factor used for the x coordinate
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// b: Number: a scaling factor used for the y coordinate
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// c: dojox.gfx.Point: a central point
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// d: null
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return m._sandwich(m.scale(a, b), c.x, c.y); // dojox.gfx.matrix.Matrix2D |
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} |
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// branch
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// a: Number: a uniform scaling factor used for both coordinates
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// b: dojox.gfx.Point: a central point
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// c: null
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// d: null
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return m._sandwich(m.scale(a), b.x, b.y); // dojox.gfx.matrix.Matrix2D |
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}, |
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rotateAt: function(angle, a, b){ |
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// summary: rotates a picture using a specified point as a center of rotation
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// description: Compare with dojox.gfx.matrix.rotate().
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// angle: Number: an angle of rotation in radians (>0 for CW)
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// a: Number: an x component of a central point
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// b: Number: a y component of a central point
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// accepts several signatures:
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// 1) rotation angle in radians, Point
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// 2) rotation angle in radians, x, y
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if(arguments.length > 2){ |
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return m._sandwich(m.rotate(angle), a, b); // dojox.gfx.matrix.Matrix2D |
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} |
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// branch
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// angle: Number: an angle of rotation in radians (>0 for CCW)
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// a: dojox.gfx.Point: a central point
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// b: null
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return m._sandwich(m.rotate(angle), a.x, a.y); // dojox.gfx.matrix.Matrix2D |
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}, |
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rotategAt: function(degree, a, b){ |
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// summary: rotates a picture using a specified point as a center of rotation
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// description: Compare with dojox.gfx.matrix.rotateg().
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// degree: Number: an angle of rotation in degrees (>0 for CW)
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// a: Number: an x component of a central point
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// b: Number: a y component of a central point
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// accepts several signatures:
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// 1) rotation angle in degrees, Point
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// 2) rotation angle in degrees, x, y
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if(arguments.length > 2){ |
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return m._sandwich(m.rotateg(degree), a, b); // dojox.gfx.matrix.Matrix2D |
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} |
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// branch
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// degree: Number: an angle of rotation in degrees (>0 for CCW)
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// a: dojox.gfx.Point: a central point
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// b: null
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return m._sandwich(m.rotateg(degree), a.x, a.y); // dojox.gfx.matrix.Matrix2D |
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}, |
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skewXAt: function(angle, a, b){ |
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// summary: skews a picture along the x axis using a specified point as a center of skewing
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// description: Compare with dojox.gfx.matrix.skewX().
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// angle: Number: an skewing angle in radians
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// a: Number: an x component of a central point
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// b: Number: a y component of a central point
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// accepts several signatures:
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// 1) skew angle in radians, Point
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// 2) skew angle in radians, x, y
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if(arguments.length > 2){ |
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return m._sandwich(m.skewX(angle), a, b); // dojox.gfx.matrix.Matrix2D |
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} |
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// branch
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// angle: Number: an skewing angle in radians
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// a: dojox.gfx.Point: a central point
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// b: null
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return m._sandwich(m.skewX(angle), a.x, a.y); // dojox.gfx.matrix.Matrix2D |
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}, |
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skewXgAt: function(degree, a, b){ |
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// summary: skews a picture along the x axis using a specified point as a center of skewing
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// description: Compare with dojox.gfx.matrix.skewXg().
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// degree: Number: an skewing angle in degrees
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// a: Number: an x component of a central point
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// b: Number: a y component of a central point
|
| 394 |
|
| 395 |
// accepts several signatures:
|
| 396 |
// 1) skew angle in degrees, Point
|
| 397 |
// 2) skew angle in degrees, x, y
|
| 398 |
|
| 399 |
if(arguments.length > 2){ |
| 400 |
return m._sandwich(m.skewXg(degree), a, b); // dojox.gfx.matrix.Matrix2D |
| 401 |
} |
| 402 |
|
| 403 |
// branch
|
| 404 |
// degree: Number: an skewing angle in degrees
|
| 405 |
// a: dojox.gfx.Point: a central point
|
| 406 |
// b: null
|
| 407 |
return m._sandwich(m.skewXg(degree), a.x, a.y); // dojox.gfx.matrix.Matrix2D |
| 408 |
}, |
| 409 |
skewYAt: function(angle, a, b){ |
| 410 |
// summary: skews a picture along the y axis using a specified point as a center of skewing
|
| 411 |
// description: Compare with dojox.gfx.matrix.skewY().
|
| 412 |
// angle: Number: an skewing angle in radians
|
| 413 |
// a: Number: an x component of a central point
|
| 414 |
// b: Number: a y component of a central point
|
| 415 |
|
| 416 |
// accepts several signatures:
|
| 417 |
// 1) skew angle in radians, Point
|
| 418 |
// 2) skew angle in radians, x, y
|
| 419 |
|
| 420 |
if(arguments.length > 2){ |
| 421 |
return m._sandwich(m.skewY(angle), a, b); // dojox.gfx.matrix.Matrix2D |
| 422 |
} |
| 423 |
|
| 424 |
// branch
|
| 425 |
// angle: Number: an skewing angle in radians
|
| 426 |
// a: dojox.gfx.Point: a central point
|
| 427 |
// b: null
|
| 428 |
return m._sandwich(m.skewY(angle), a.x, a.y); // dojox.gfx.matrix.Matrix2D |
| 429 |
}, |
| 430 |
skewYgAt: function(/* Number */ degree, /* Number||Point */ a, /* Number, optional */ b){ |
| 431 |
// summary: skews a picture along the y axis using a specified point as a center of skewing
|
| 432 |
// description: Compare with dojox.gfx.matrix.skewYg().
|
| 433 |
// degree: Number: an skewing angle in degrees
|
| 434 |
// a: Number: an x component of a central point
|
| 435 |
// b: Number: a y component of a central point
|
| 436 |
|
| 437 |
// accepts several signatures:
|
| 438 |
// 1) skew angle in degrees, Point
|
| 439 |
// 2) skew angle in degrees, x, y
|
| 440 |
|
| 441 |
if(arguments.length > 2){ |
| 442 |
return m._sandwich(m.skewYg(degree), a, b); // dojox.gfx.matrix.Matrix2D |
| 443 |
} |
| 444 |
|
| 445 |
// branch
|
| 446 |
// degree: Number: an skewing angle in degrees
|
| 447 |
// a: dojox.gfx.Point: a central point
|
| 448 |
// b: null
|
| 449 |
return m._sandwich(m.skewYg(degree), a.x, a.y); // dojox.gfx.matrix.Matrix2D |
| 450 |
} |
| 451 |
|
| 452 |
//TODO: rect-to-rect mapping, scale-to-fit (isotropic and anisotropic versions)
|
| 453 |
|
| 454 |
}); |
| 455 |
})(); |
| 456 |
|
| 457 |
// propagate Matrix2D up
|
| 458 |
dojox.gfx.Matrix2D = dojox.gfx.matrix.Matrix2D; |
| 459 |
|
| 460 |
} |
| 461 |
|
| 462 |
if(!dojo._hasResource["dojox.gfx._base"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. |
| 463 |
dojo._hasResource["dojox.gfx._base"] = true; |
| 464 |
dojo.provide("dojox.gfx._base");
|
| 465 |
|
| 466 |
(function(){
|
| 467 |
var g = dojox.gfx, b = g._base;
|
| 468 |
|
| 469 |
// candidates for dojox.style (work on VML and SVG nodes)
|
| 470 |
g._hasClass = function(/*DomNode*/node, /*String*/classStr){ |
| 471 |
// summary:
|
| 472 |
// Returns whether or not the specified classes are a portion of the
|
| 473 |
// class list currently applied to the node.
|
| 474 |
// return (new RegExp('(^|\\s+)'+classStr+'(\\s+|$)')).test(node.className) // Boolean
|
| 475 |
var cls = node.getAttribute("className"); |
| 476 |
return cls && (" " + cls + " ").indexOf(" " + classStr + " ") >= 0; // Boolean |
| 477 |
} |
| 478 |
g._addClass = function(/*DomNode*/node, /*String*/classStr){ |
| 479 |
// summary:
|
| 480 |
// Adds the specified classes to the end of the class list on the
|
| 481 |
// passed node.
|
| 482 |
var cls = node.getAttribute("className") || ""; |
| 483 |
if(!cls || (" " + cls + " ").indexOf(" " + classStr + " ") < 0){ |
| 484 |
node.setAttribute("className", cls + (cls ? " " : "") + classStr); |
| 485 |
} |
| 486 |
} |
| 487 |
g._removeClass = function(/*DomNode*/node, /*String*/classStr){ |
| 488 |
// summary: Removes classes from node.
|
| 489 |
var cls = node.getAttribute("className"); |
| 490 |
if(cls){
|
| 491 |
node.setAttribute( |
| 492 |
"className",
|
| 493 |
cls.replace(new RegExp('(^|\\s+)' + classStr + '(\\s+|$)'), "$1$2") |
| 494 |
); |
| 495 |
} |
| 496 |
} |
| 497 |
|
| 498 |
// candidate for dojox.html.metrics (dynamic font resize handler is not implemented here)
|
| 499 |
|
| 500 |
// derived from Morris John's emResized measurer
|
| 501 |
b._getFontMeasurements = function(){ |
| 502 |
// summary:
|
| 503 |
// Returns an object that has pixel equivilents of standard font
|
| 504 |
// size values.
|
| 505 |
var heights = {
|
| 506 |
'1em': 0, '1ex': 0, '100%': 0, '12pt': 0, '16px': 0, 'xx-small': 0, |
| 507 |
'x-small': 0, 'small': 0, 'medium': 0, 'large': 0, 'x-large': 0, |
| 508 |
'xx-large': 0 |
| 509 |
}; |
| 510 |
|
| 511 |
if(dojo.isIE){
|
| 512 |
// we do a font-size fix if and only if one isn't applied already.
|
| 513 |
// NOTE: If someone set the fontSize on the HTML Element, this will kill it.
|
| 514 |
dojo.doc.documentElement.style.fontSize="100%";
|
| 515 |
} |
| 516 |
|
| 517 |
// set up the measuring node.
|
| 518 |
var div = dojo.doc.createElement("div"); |
| 519 |
var s = div.style;
|
| 520 |
s.position = "absolute";
|
| 521 |
s.left = "-100px";
|
| 522 |
s.top = "0px";
|
| 523 |
s.width = "30px";
|
| 524 |
s.height = "1000em";
|
| 525 |
s.borderWidth = "0px";
|
| 526 |
s.margin = "0px";
|
| 527 |
s.padding = "0px";
|
| 528 |
s.outline = "none";
|
| 529 |
s.lineHeight = "1";
|
| 530 |
s.overflow = "hidden";
|
| 531 |
dojo.body().appendChild(div); |
| 532 |
|
| 533 |
// do the measurements.
|
| 534 |
for(var p in heights){ |
| 535 |
div.style.fontSize = p; |
| 536 |
heights[p] = Math.round(div.offsetHeight * 12/16) * 16/12 / 1000; |
| 537 |
} |
| 538 |
|
| 539 |
dojo.body().removeChild(div); |
| 540 |
div = null;
|
| 541 |
return heights; // object |
| 542 |
}; |
| 543 |
|
| 544 |
var fontMeasurements = null; |
| 545 |
|
| 546 |
b._getCachedFontMeasurements = function(recalculate){ |
| 547 |
if(recalculate || !fontMeasurements){
|
| 548 |
fontMeasurements = b._getFontMeasurements(); |
| 549 |
} |
| 550 |
return fontMeasurements;
|
| 551 |
}; |
| 552 |
|
| 553 |
// candidate for dojox.html.metrics
|
| 554 |
|
| 555 |
var measuringNode = null, empty = {}; |
| 556 |
b._getTextBox = function( /*String*/ text, |
| 557 |
/*Object*/ style,
|
| 558 |
/*String?*/ className){
|
| 559 |
var m, s, al = arguments.length; |
| 560 |
if(!measuringNode){
|
| 561 |
m = measuringNode = dojo.doc.createElement("div");
|
| 562 |
s = m.style; |
| 563 |
s.position = "absolute";
|
| 564 |
s.left = "-10000px";
|
| 565 |
s.top = "0";
|
| 566 |
dojo.body().appendChild(m); |
| 567 |
}else{
|
| 568 |
m = measuringNode; |
| 569 |
s = m.style; |
| 570 |
} |
| 571 |
// reset styles
|
| 572 |
m.className = "";
|
| 573 |
s.borderWidth = "0";
|
| 574 |
s.margin = "0";
|
| 575 |
s.padding = "0";
|
| 576 |
s.outline = "0";
|
| 577 |
// set new style
|
| 578 |
if(al > 1 && style){ |
| 579 |
for(var i in style){ |
| 580 |
if(i in empty){ continue; } |
| 581 |
s[i] = style[i]; |
| 582 |
} |
| 583 |
} |
| 584 |
// set classes
|
| 585 |
if(al > 2 && className){ |
| 586 |
m.className = className; |
| 587 |
} |
| 588 |
// take a measure
|
| 589 |
m.innerHTML = text; |
| 590 |
|
| 591 |
if(m["getBoundingClientRect"]){ |
| 592 |
var bcr = m.getBoundingClientRect();
|
| 593 |
return {l: bcr.left, t: bcr.top, w: bcr.width || (bcr.right - bcr.left), h: bcr.height || (bcr.bottom - bcr.top)}; |
| 594 |
}else{
|
| 595 |
return dojo.marginBox(m);
|
| 596 |
} |
| 597 |
}; |
| 598 |
|
| 599 |
// candidate for dojo.dom
|
| 600 |
|
| 601 |
var uniqueId = 0; |
| 602 |
b._getUniqueId = function(){ |
| 603 |
// summary: returns a unique string for use with any DOM element
|
| 604 |
var id;
|
| 605 |
do{
|
| 606 |
id = dojo._scopeName + "Unique" + (++uniqueId);
|
| 607 |
}while(dojo.byId(id));
|
| 608 |
return id;
|
| 609 |
}; |
| 610 |
})(); |
| 611 |
|
| 612 |
dojo.mixin(dojox.gfx, {
|
| 613 |
// summary:
|
| 614 |
// defines constants, prototypes, and utility functions
|
| 615 |
|
| 616 |
// default shapes, which are used to fill in missing parameters
|
| 617 |
defaultPath: {
|
| 618 |
type: "path", path: "" |
| 619 |
}, |
| 620 |
defaultPolyline: {
|
| 621 |
type: "polyline", points: [] |
| 622 |
}, |
| 623 |
defaultRect: {
|
| 624 |
type: "rect", x: 0, y: 0, width: 100, height: 100, r: 0 |
| 625 |
}, |
| 626 |
defaultEllipse: {
|
| 627 |
type: "ellipse", cx: 0, cy: 0, rx: 200, ry: 100 |
| 628 |
}, |
| 629 |
defaultCircle: {
|
| 630 |
type: "circle", cx: 0, cy: 0, r: 100 |
| 631 |
}, |
| 632 |
defaultLine: {
|
| 633 |
type: "line", x1: 0, y1: 0, x2: 100, y2: 100 |
| 634 |
}, |
| 635 |
defaultImage: {
|
| 636 |
type: "image", x: 0, y: 0, width: 0, height: 0, src: "" |
| 637 |
}, |
| 638 |
defaultText: {
|
| 639 |
type: "text", x: 0, y: 0, text: "", align: "start", |
| 640 |
decoration: "none", rotated: false, kerning: true |
| 641 |
}, |
| 642 |
defaultTextPath: {
|
| 643 |
type: "textpath", text: "", align: "start", |
| 644 |
decoration: "none", rotated: false, kerning: true |
| 645 |
}, |
| 646 |
|
| 647 |
// default geometric attributes
|
| 648 |
defaultStroke: {
|
| 649 |
type: "stroke", color: "black", style: "solid", width: 1, |
| 650 |
cap: "butt", join: 4 |
| 651 |
}, |
| 652 |
defaultLinearGradient: {
|
| 653 |
type: "linear", x1: 0, y1: 0, x2: 100, y2: 100, |
| 654 |
colors: [
|
| 655 |
{ offset: 0, color: "black" }, { offset: 1, color: "white" }
|
| 656 |
] |
| 657 |
}, |
| 658 |
defaultRadialGradient: {
|
| 659 |
type: "radial", cx: 0, cy: 0, r: 100, |
| 660 |
colors: [
|
| 661 |
{ offset: 0, color: "black" }, { offset: 1, color: "white" }
|
| 662 |
] |
| 663 |
}, |
| 664 |
defaultPattern: {
|
| 665 |
type: "pattern", x: 0, y: 0, width: 0, height: 0, src: "" |
| 666 |
}, |
| 667 |
defaultFont: {
|
| 668 |
type: "font", style: "normal", variant: "normal", |
| 669 |
weight: "normal", size: "10pt", family: "serif" |
| 670 |
}, |
| 671 |
|
| 672 |
getDefault: (function(){ |
| 673 |
var typeCtorCache = {};
|
| 674 |
// a memoized delegate()
|
| 675 |
return function(/*String*/ type){ |
| 676 |
var t = typeCtorCache[type];
|
| 677 |
if(t){
|
| 678 |
return new t(); |
| 679 |
} |
| 680 |
t = typeCtorCache[type] = new Function;
|
| 681 |
t.prototype = dojox.gfx[ "default" + type ];
|
| 682 |
return new t(); |
| 683 |
} |
| 684 |
})(), |
| 685 |
|
| 686 |
normalizeColor: function(/*Color*/ color){ |
| 687 |
// summary:
|
| 688 |
// converts any legal color representation to normalized
|
| 689 |
// dojo.Color object
|
| 690 |
return (color instanceof dojo.Color) ? color : new dojo.Color(color); // dojo.Color |
| 691 |
}, |
| 692 |
normalizeParameters: function(existed, update){ |
| 693 |
// summary:
|
| 694 |
// updates an existing object with properties from an "update"
|
| 695 |
// object
|
| 696 |
// existed: Object
|
| 697 |
// the "target" object to be updated
|
| 698 |
// update: Object
|
| 699 |
// the "update" object, whose properties will be used to update
|
| 700 |
// the existed object
|
| 701 |
if(update){
|
| 702 |
var empty = {};
|
| 703 |
for(var x in existed){ |
| 704 |
if(x in update && !(x in empty)){ |
| 705 |
existed[x] = update[x]; |
| 706 |
} |
| 707 |
} |
| 708 |
} |
| 709 |
return existed; // Object |
| 710 |
}, |
| 711 |
makeParameters: function(defaults, update){ |
| 712 |
// summary:
|
| 713 |
// copies the original object, and all copied properties from the
|
| 714 |
// "update" object
|
| 715 |
// defaults: Object
|
| 716 |
// the object to be cloned before updating
|
| 717 |
// update: Object
|
| 718 |
// the object, which properties are to be cloned during updating
|
| 719 |
if(!update){
|
| 720 |
// return dojo.clone(defaults);
|
| 721 |
return dojo.delegate(defaults);
|
| 722 |
} |
| 723 |
var result = {};
|
| 724 |
for(var i in defaults){ |
| 725 |
if(!(i in result)){ |
| 726 |
result[i] = dojo.clone((i in update) ? update[i] : defaults[i]);
|
| 727 |
} |
| 728 |
} |
| 729 |
return result; // Object |
| 730 |
}, |
| 731 |
formatNumber: function(x, addSpace){ |
| 732 |
// summary: converts a number to a string using a fixed notation
|
| 733 |
// x: Number: number to be converted
|
| 734 |
// addSpace: Boolean?: if it is true, add a space before a positive number
|
| 735 |
var val = x.toString();
|
| 736 |
if(val.indexOf("e") >= 0){ |
| 737 |
val = x.toFixed(4);
|
| 738 |
}else{
|
| 739 |
var point = val.indexOf("."); |
| 740 |
if(point >= 0 && val.length - point > 5){ |
| 741 |
val = x.toFixed(4);
|
| 742 |
} |
| 743 |
} |
| 744 |
if(x < 0){ |
| 745 |
return val; // String |
| 746 |
} |
| 747 |
return addSpace ? " " + val : val; // String |
| 748 |
}, |
| 749 |
// font operations
|
| 750 |
makeFontString: function(font){ |
| 751 |
// summary: converts a font object to a CSS font string
|
| 752 |
// font: Object: font object (see dojox.gfx.defaultFont)
|
| 753 |
return font.style + " " + font.variant + " " + font.weight + " " + font.size + " " + font.family; // Object |
| 754 |
}, |
| 755 |
splitFontString: function(str){ |
| 756 |
// summary:
|
| 757 |
// converts a CSS font string to a font object
|
| 758 |
// description:
|
| 759 |
// Converts a CSS font string to a gfx font object. The CSS font
|
| 760 |
// string components should follow the W3C specified order
|
| 761 |
// (see http://www.w3.org/TR/CSS2/fonts.html#font-shorthand):
|
| 762 |
// style, variant, weight, size, optional line height (will be
|
| 763 |
// ignored), and family.
|
| 764 |
// str: String
|
| 765 |
// a CSS font string
|
| 766 |
var font = dojox.gfx.getDefault("Font"); |
| 767 |
var t = str.split(/\s+/); |
| 768 |
do{
|
| 769 |
if(t.length < 5){ break; } |
| 770 |
font.style = t[0];
|
| 771 |
font.variant = t[1];
|
| 772 |
font.weight = t[2];
|
| 773 |
var i = t[3].indexOf("/"); |
| 774 |
font.size = i < 0 ? t[3] : t[3].substring(0, i); |
| 775 |
var j = 4; |
| 776 |
if(i < 0){ |
| 777 |
if(t[4] == "/"){ |
| 778 |
j = 6;
|
| 779 |
}else if(t[4].charAt(0) == "/"){ |
| 780 |
j = 5;
|
| 781 |
} |
| 782 |
} |
| 783 |
if(j < t.length){
|
| 784 |
font.family = t.slice(j).join(" ");
|
| 785 |
} |
| 786 |
}while(false); |
| 787 |
return font; // Object |
| 788 |
}, |
| 789 |
// length operations
|
| 790 |
cm_in_pt: 72 / 2.54, // Number: points per centimeter |
| 791 |
mm_in_pt: 7.2 / 2.54, // Number: points per millimeter |
| 792 |
px_in_pt: function(){ |
| 793 |
// summary: returns a number of pixels per point
|
| 794 |
return dojox.gfx._base._getCachedFontMeasurements()["12pt"] / 12; // Number |
| 795 |
}, |
| 796 |
pt2px: function(len){ |
| 797 |
// summary: converts points to pixels
|
| 798 |
// len: Number: a value in points
|
| 799 |
return len * dojox.gfx.px_in_pt(); // Number |
| 800 |
}, |
| 801 |
px2pt: function(len){ |
| 802 |
// summary: converts pixels to points
|
| 803 |
// len: Number: a value in pixels
|
| 804 |
return len / dojox.gfx.px_in_pt(); // Number |
| 805 |
}, |
| 806 |
normalizedLength: function(len) { |
| 807 |
// summary: converts any length value to pixels
|
| 808 |
// len: String: a length, e.g., "12pc"
|
| 809 |
if(len.length == 0) return 0; |
| 810 |
if(len.length > 2){ |
| 811 |
var px_in_pt = dojox.gfx.px_in_pt();
|
| 812 |
var val = parseFloat(len);
|
| 813 |
switch(len.slice(-2)){ |
| 814 |
case "px": return val; |
| 815 |
case "pt": return val * px_in_pt; |
| 816 |
case "in": return val * 72 * px_in_pt; |
| 817 |
case "pc": return val * 12 * px_in_pt; |
| 818 |
case "mm": return val * dojox.gfx.mm_in_pt * px_in_pt; |
| 819 |
case "cm": return val * dojox.gfx.cm_in_pt * px_in_pt; |
| 820 |
} |
| 821 |
} |
| 822 |
return parseFloat(len); // Number |
| 823 |
}, |
| 824 |
|
| 825 |
// a constant used to split a SVG/VML path into primitive components
|
| 826 |
pathVmlRegExp: /([A-Za-z]+)|(\d+(\.\d+)?)|(\.\d+)|(-\d+(\.\d+)?)|(-\.\d+)/g, |
| 827 |
pathSvgRegExp: /([A-Za-z])|(\d+(\.\d+)?)|(\.\d+)|(-\d+(\.\d+)?)|(-\.\d+)/g, |
| 828 |
|
| 829 |
equalSources: function(a, b){ |
| 830 |
// summary: compares event sources, returns true if they are equal
|
| 831 |
return a && b && a == b;
|
| 832 |
} |
| 833 |
}); |
| 834 |
|
| 835 |
} |
| 836 |
|
| 837 |
if(!dojo._hasResource["dojox.gfx"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. |
| 838 |
dojo._hasResource["dojox.gfx"] = true; |
| 839 |
dojo.provide("dojox.gfx");
|
| 840 |
|
| 841 |
|
| 842 |
|
| 843 |
|
| 844 |
dojo.loadInit(function(){
|
| 845 |
//Since loaderInit can be fired before any dojo.provide/require calls,
|
| 846 |
//make sure the dojox.gfx object exists and only run this logic if dojox.gfx.renderer
|
| 847 |
//has not been defined yet.
|
| 848 |
var gfx = dojo.getObject("dojox.gfx", true), sl, flag, match; |
| 849 |
if(!gfx.renderer){
|
| 850 |
//Have a way to force a GFX renderer, if so desired.
|
| 851 |
//Useful for being able to serialize GFX data in a particular format.
|
| 852 |
if(dojo.config.forceGfxRenderer){
|
| 853 |
dojox.gfx.renderer = dojo.config.forceGfxRenderer; |
| 854 |
return;
|
| 855 |
} |
| 856 |
var renderers = (typeof dojo.config.gfxRenderer == "string" ? |
| 857 |
dojo.config.gfxRenderer : "svg,vml,silverlight,canvas").split(","); |
| 858 |
|
| 859 |
// mobile platform detection
|
| 860 |
// TODO: move to the base?
|
| 861 |
|
| 862 |
var ua = navigator.userAgent, iPhoneOsBuild = 0, androidVersion = 0; |
| 863 |
if(dojo.isSafari >= 3){ |
| 864 |
// detect mobile version of WebKit starting with "version 3"
|
| 865 |
|
| 866 |
// comprehensive iPhone test. Have to figure out whether it's SVG or Canvas based on the build.
|
| 867 |
// iPhone OS build numbers from en.wikipedia.org.
|
| 868 |
if(ua.indexOf("iPhone") >= 0 || ua.indexOf("iPod") >= 0){ |
| 869 |
// grab the build out of this. Expression is a little nasty because we want
|
| 870 |
// to be sure we have the whole version string.
|
| 871 |
match = ua.match(/Version\/(\d(\.\d)?(\.\d)?)\sMobile\/([^\s]*)\s?/);
|
| 872 |
if(match){
|
| 873 |
// grab the build out of the match. Only use the first three because of specific builds.
|
| 874 |
iPhoneOsBuild = parseInt(match[4].substr(0,3), 16); |
| 875 |
} |
| 876 |
} |
| 877 |
} |
| 878 |
if(dojo.isWebKit){
|
| 879 |
// Android detection
|
| 880 |
if(!iPhoneOsBuild){
|
| 881 |
match = ua.match(/Android\s+(\d+\.\d+)/);
|
| 882 |
if(match){
|
| 883 |
androidVersion = parseFloat(match[1]);
|
| 884 |
// Android 1.0-1.1 doesn't support SVG but supports Canvas
|
| 885 |
} |
| 886 |
} |
| 887 |
} |
| 888 |
|
| 889 |
for(var i = 0; i < renderers.length; ++i){ |
| 890 |
switch(renderers[i]){
|
| 891 |
case "svg": |
| 892 |
// iPhone OS builds greater than 5F1 should have SVG.
|
| 893 |
if(!dojo.isIE && (!iPhoneOsBuild || iPhoneOsBuild >= 0x5f1) && !androidVersion && !dojo.isAIR){ |
| 894 |
dojox.gfx.renderer = "svg";
|
| 895 |
} |
| 896 |
break;
|
| 897 |
case "vml": |
| 898 |
if(dojo.isIE){
|
| 899 |
dojox.gfx.renderer = "vml";
|
| 900 |
} |
| 901 |
break;
|
| 902 |
case "silverlight": |
| 903 |
try{
|
| 904 |
if(dojo.isIE){
|
| 905 |
sl = new ActiveXObject("AgControl.AgControl"); |
| 906 |
if(sl && sl.IsVersionSupported("1.0")){ |
| 907 |
flag = true;
|
| 908 |
} |
| 909 |
}else{
|
| 910 |
if(navigator.plugins["Silverlight Plug-In"]){ |
| 911 |
flag = true;
|
| 912 |
} |
| 913 |
} |
| 914 |
}catch(e){
|
| 915 |
flag = false;
|
| 916 |
}finally{
|
| 917 |
sl = null;
|
| 918 |
} |
| 919 |
if(flag){ dojox.gfx.renderer = "silverlight"; } |
| 920 |
break;
|
| 921 |
case "canvas": |
| 922 |
//TODO: need more comprehensive test for Canvas
|
| 923 |
if(!dojo.isIE){
|
| 924 |
dojox.gfx.renderer = "canvas";
|
| 925 |
} |
| 926 |
break;
|
| 927 |
} |
| 928 |
if(dojox.gfx.renderer){ break; } |
| 929 |
} |
| 930 |
if(dojo.config.isDebug){
|
| 931 |
console.log("gfx renderer = " + dojox.gfx.renderer);
|
| 932 |
} |
| 933 |
} |
| 934 |
}); |
| 935 |
|
| 936 |
// include a renderer conditionally
|
| 937 |
dojo.requireIf(dojox.gfx.renderer == "svg", "dojox.gfx.svg"); |
| 938 |
dojo.requireIf(dojox.gfx.renderer == "vml", "dojox.gfx.vml"); |
| 939 |
dojo.requireIf(dojox.gfx.renderer == "silverlight", "dojox.gfx.silverlight"); |
| 940 |
dojo.requireIf(dojox.gfx.renderer == "canvas", "dojox.gfx.canvas"); |
| 941 |
|
| 942 |
} |
| 943 |
|