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Text.js
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Text.js
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define(["dojo", "../util/oo", "./_Base", "../manager/_registry", "../util/typeset"],
function(dojo, oo, Base, registry, typeset){
var Text = oo.declare(
Base,
function(options){
// summary:
// constructor.
},
{
// summary:
// Creates a dojox.gfx Text (SVG or VML) based on data provided.
// description:
// There are two text classes. TextBlock extends this one and
// adds editable functionality, discovers text width etc.
// This class displays text only. There is no line wrapping.
// Multiple lines can be achieved by inserting \n linebreaks
// in the text.
type:"dojox.drawing.stencil.Text",
anchorType:"none",
baseRender:true,
// align: String
// Text horizontal alignment.
// Options: start, middle, end
align:"start",
// valign: String
// Text vertical alignment
// Options: top, middle, bottom (FIXME: bottom not supported)
valign:"top",
// _lineHeight: [readonly] Number
// The height of each line of text. Based on style information
// and font size.
_lineHeight:1,
/*=====
StencilData: {
// summary:
// The data used to create the dojox.gfx Text
// x: Number
// Left point x
// y: Number
// Top point y
// width: ? Number
// Optional width of Text. Not required but reccommended.
// for auto-sizing, use TextBlock
// height: ? Number
// Optional height of Text. If not provided, _lineHeight is used.
// text: String
// The string content. If not provided, may auto-delete depending on defaults.
},
StencilPoints: [
// summary:
// An Array of dojox.__StencilPoint objects that describe the Stencil
// [Top left point, Top right point, Bottom right point, Bottom left point]
],
=====*/
typesetter: function(text){
// summary:
// Register raw text, returning typeset form.
// Uses function dojox.drawing.stencil.Text.typeset
// for typesetting, if it exists.
//if(dojox.drawing.util.typeset){
this._rawText = text;
return typeset.convertLaTeX(text);
//}
//return text;
},
setText: function(text){
// summary:
// Setter for text.
// Only apply typesetting to objects that the user can modify.
// Else, it is assumed that typesetting is done elsewhere.
if(this.enabled){
text = this.typesetter(text);
}
// This only has an effect if text is null or this.created is false.
this._text = text;
this._textArray = [];
this.created && this.render(text);
},
getText: function(){
// summary:
// Getter for text.
return this._rawText || this._text;
},
dataToPoints: function(/*Object*/o){
// summary:
// Converts data to points.
o = o || this.data;
var w = o.width =="auto" ? 1 : o.width;
var h = o.height || this._lineHeight;
this.points = [
{x:o.x, y:o.y}, // TL
{x:o.x + w, y:o.y}, // TR
{x:o.x + w, y:o.y + h}, // BR
{x:o.x, y:o.y + h} // BL
];
return this.points;
},
pointsToData: function(/*Array*/p){
// summary:
// Converts points to data
p = p || this.points;
var s = p[0];
var e = p[2];
this.data = {
x: s.x,
y: s.y,
width: e.x-s.x,
height: e.y-s.y
};
return this.data;
},
render: function(/* String*/text){
// summary:
// Renders the 'hit' object (the shape used for an expanded
// hit area and for highlighting) and the'shape' (the actual
// display object). Text is slightly different than other
// implementations. Instead of calling render twice, it calls
// _createHilite for the 'hit'
// text: String
// Changes text if sent. Be sure to use the setText and
// not to call this directly.
this.remove(this.shape, this.hit);
//console.log("text render, outline:", !this.annotation, this.renderHit, (!this.annotation && this.renderHit))
!this.annotation && this.renderHit && this._renderOutline();
if(text!=undefined){
this._text = text;
this._textArray = this._text.split("\n");
}
var d = this.pointsToData();
var h = this._lineHeight;
var x = d.x + this.style.text.pad*2;
var y = d.y + this._lineHeight - (this.textSize*.4);
if(this.valign=="middle"){
y -= h/2;
}
this.shape = this.container.createGroup();
/*console.log(" render ", this.type, this.id)
console.log(" render Y:", d.y, "textSize:", this.textSize, "LH:", this._lineHeight)
console.log(" render text:", y, " ... ", this._text, "enabled:", this.enabled);
console.log(" render text:", this.style.currentText);
*/
dojo.forEach(this._textArray, function(txt, i){
var tb = this.shape.createText({x: x, y: y+(h*i), text: unescape(txt), align: this.align})
.setFont(this.style.currentText)
.setFill(this.style.currentText.color);
this._setNodeAtts(tb);
}, this);
this._setNodeAtts(this.shape);
},
_renderOutline: function(){
// summary:
// Create the hit and highlight area
// for the Text.
if(this.annotation){ return; }
var d = this.pointsToData();
if(this.align=="middle"){
d.x -= d.width/2 - this.style.text.pad * 2;
}else if(this.align=="start"){
d.x += this.style.text.pad;
}else if(this.align=="end"){
d.x -= d.width - this.style.text.pad * 3;
}
if(this.valign=="middle"){
d.y -= (this._lineHeight )/2 - this.style.text.pad;
}
this.hit = this.container.createRect(d)
.setStroke(this.style.currentHit)
.setFill(this.style.currentHit.fill);
//.setFill("#ffff00");
this._setNodeAtts(this.hit);
this.hit.moveToBack();
},
makeFit: function(text, w){
var span = dojo.create('span', {innerHTML:text, id:"foo"}, document.body);
var sz = 1;
dojo.style(span, "fontSize", sz+"px");
var cnt = 30;
while(dojo.marginBox(span).w<w){
sz++;
dojo.style(span, "fontSize", sz+"px");
if(cnt--<=0) break;
}
sz--;
var box = dojo.marginBox(span);
dojo.destroy(span);
return {size:sz, box:box};
}
}
);
dojo.setObject("dojox.drawing.stencil.Text", Text);
registry.register({
name:"dojox.drawing.stencil.Text"
}, "stencil");
return Text;
});