split rendering up into renderer, render, layout

src/render_iframe.js

@@ -0,0 +1,171 @@
+EPUBJS.Render.Iframe = function() {
+	this.iframe;
+	this.document;
+	this.window;
+	this.docEl;
+	this.bodyEl;
+
+	this.leftPos = 0;
+	this.pageWidth = 0;
+};
+
+//-- Build up any html needed
+EPUBJS.Render.Iframe.prototype.create = function(){
+	this.iframe = document.createElement('iframe');
+	this.iframe.id = "epubjs-iframe";
+	this.iframe.scrolling = "no";
+	
+	return this.iframe;
+};
+
+EPUBJS.Render.Iframe.prototype.load = function(url){
+	var render = this,
+			deferred = new RSVP.defer();
+
+	this.leftPos = 0;
+	this.iframe.src = url;
+	
+	if(this.window) {
+		this.unload();
+	}
+	
+	this.iframe.onload = function() {
+		render.document = render.iframe.contentDocument;
+		
+		render.docEl = render.document.documentElement;
+		render.bodyEl = render.document.body;
+		render.window = render.iframe.contentWindow;
+		
+		render.window.addEventListener("resize", render.resized.bind(render), false);
+
+		//-- Clear Margins
+		if(render.bodyEl) render.bodyEl.style.margin = "0";
+		
+		deferred.resolve(render.docEl);
+	};
+	
+	this.iframe.onerror = function(e) {
+		console.error("Error Loading Contents", e);
+	}
+	return deferred.promise;
+};
+
+EPUBJS.Render.Iframe.prototype.resize = function(width, height){
+	var iframeBox;
+	
+	if(!this.iframe) return;
+	
+	this.iframe.height = height;
+
+	if(!isNaN(width) && width % 2 !== 0){
+		width += 1; //-- Prevent cutting off edges of text in columns
+	}
+
+	this.iframe.width = width;
+
+	this.width = this.iframe.getBoundingClientRect().width;
+	this.height = this.iframe.getBoundingClientRect().height;
+};
+
+
+EPUBJS.Render.Iframe.prototype.resized = function(e){
+	this.width = this.iframe.getBoundingClientRect().width;
+	this.height = this.iframe.getBoundingClientRect().height;
+};
+
+EPUBJS.Render.Iframe.prototype.totalWidth = function(){
+	return this.docEl.scrollWidth;
+};
+
+EPUBJS.Render.Iframe.prototype.totalHeight = function(){
+	return this.docEl.scrollHeight;
+};
+
+EPUBJS.Render.Iframe.prototype.setPageDimensions = function(pageWidth, pageHeight){
+	this.pageWidth = pageWidth;
+	this.pageHeight = pageHeight;
+	//-- Add a page to the width of the document to account an for odd number of pages
+	// this.docEl.style.width = this.docEl.scrollWidth + pageWidth + "px";
+};
+
+EPUBJS.Render.Iframe.prototype.setLeft = function(leftPos){
+	// this.bodyEl.style.marginLeft = -leftPos + "px";
+	// this.docEl.style.marginLeft = -leftPos + "px";
+	// this.docEl.style[EPUBJS.Render.Iframe.transform] = 'translate('+ (-leftPos) + 'px, 0)';
+	this.document.defaultView.scrollTo(leftPos, 0);
+};
+
+// EPUBJS.Render.Iframe.prototype.nextPage = function(){
+// 		this.leftPos += this.pageWidth;
+// 		this.setLeft(this.leftPos);
+// };
+// 
+// EPUBJS.Render.Iframe.prototype.prevPage = function(){
+// 		this.leftPos -= this.pageWidth;
+// 		this.setLeft(this.leftPos);
+// };
+
+EPUBJS.Render.Iframe.prototype.setStyle = function(style, val, prefixed){
+	if(prefixed) {
+		style = EPUBJS.core.prefixed(style);
+	}
+
+	if(this.bodyEl) this.bodyEl.style[style] = val;
+};
+
+EPUBJS.Render.Iframe.prototype.removeStyle = function(style){
+
+	if(this.bodyEl) this.bodyEl.style[style] = '';
+
+};
+
+EPUBJS.Render.Iframe.prototype.page = function(pg){
+	this.leftPos = this.pageWidth * (pg-1); //-- pages start at 1
+	this.setLeft(this.leftPos);
+};
+
+//-- Show the page containing an Element
+EPUBJS.Render.Iframe.prototype.getPageNumberByElement = function(el){
+	var left, pg;
+	if(!el) return;
+
+	left = this.leftPos + el.getBoundingClientRect().left; //-- Calculate left offset compaired to scrolled position
+	
+	pg = Math.floor(left / this.pageWidth) + 1; //-- pages start at 1
+	
+	return pg;
+};
+
+//-- 
+EPUBJS.Render.Iframe.prototype.getBaseElement = function(){
+	return this.bodyEl;
+};
+
+EPUBJS.Render.Iframe.prototype.isElementVisible = function(el){
+	var rect;
+
+	if(el && typeof el.getBoundingClientRect === 'function'){
+		rect = el.getBoundingClientRect();
+		if( rect.width != 0 && 
+				rect.height != 0 &&
+				rect.left >= 0 &&
+				rect.left < this.pageWidth ) {
+			return true;
+		}
+	}
+
+	return false;
+};
+
+
+EPUBJS.Render.Iframe.prototype.scroll = function(bool){
+	if(bool) {
+		this.iframe.scrolling = "yes";
+	} else {
+		this.iframe.scrolling = "no";
+	}
+};
+
+EPUBJS.Render.Iframe.prototype.unload = function(){
+	this.window.removeEventListener("resize", this.resized);
+};