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<title>JSDoc: Source: display/Graphic.js</title>
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<h1 class="page-title">Source: display/Graphic.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>//------------------------------------------------------------------------------
// Constructor scope
//------------------------------------------------------------------------------
/**
* Creates a new instance of the Graphic class.
*
* @constructor
* @extends rune.display.DisplayObjectContainer
*
* @param {number} [x=0.0] The x coordinate of the top-left corner of the rectangle.
* @param {number} [y=0.0] The y coordinate of the top-left corner of the rectangle.
* @param {number} [width=0.0] The y coordinate of the top-left corner of the rectangle.
* @param {number} [height=0.0] The height of the rectangle, in pixels.
* @param {string} [resource=""] Name of the resource to be used as texture data.
*
* @class
* @classdesc
*
* The Graphic class represents an image file that can be rendered according to
* its visual properties in a display list. The class is suitable for graphic
* objects that do not require frame-by-frame animation, but that need to be
* moved, rotated or otherwise change their visual presentation on the screen.
*/
rune.display.Graphic = function(x, y, width, height, resource) {
//--------------------------------------------------------------------------
// Protected properties
//--------------------------------------------------------------------------
/**
* Texture data.
*
* @type {rune.display.Texture}
* @protected
* @ignore
*/
this.m_texture = this.m_getTexture(resource, width, height);
//--------------------------------------------------------------------------
// Super call
//--------------------------------------------------------------------------
/**
* Extend rune.display.DisplayObjectContainer.
*/
rune.display.DisplayObjectContainer.call(this, x, y, width, height);
};
//------------------------------------------------------------------------------
// Inheritance
//------------------------------------------------------------------------------
rune.display.Graphic.prototype = Object.create(rune.display.DisplayObjectContainer.prototype);
rune.display.Graphic.prototype.constructor = rune.display.Graphic;
//------------------------------------------------------------------------------
// Public getter and setter methods
//------------------------------------------------------------------------------
/**
* Represents the bitmap data used for the graphical representation of the
* object. The texture data is drawn to the object's pixel buffer (Canvas) as
* part of the internal rendering process.
*
* @member {rune.display.Texture} texture
* @memberof rune.display.Graphic
* @instance
* @readonly
*/
Object.defineProperty(rune.display.Graphic.prototype, "texture", {
/**
* @this rune.display.Graphic
* @ignore
*/
get : function() {
return this.m_texture;
}
});
//------------------------------------------------------------------------------
// Override protected prototype methods
//------------------------------------------------------------------------------
/**
* @inheritDoc
*/
rune.display.Graphic.prototype.render = function() {
if (this.m_cached == false) {
this.m_renderBackgroundColor();
this.m_renderTexture();
this.m_renderChildren();
this.m_renderGraphics();
this.m_renderStates();
this.restoreCache();
}
};
//------------------------------------------------------------------------------
// Protected prototype methods
//------------------------------------------------------------------------------
/**
* Draws texture data to the object's pixel buffer (Canvas). Note that it is
* the contents of the pixel buffer that are finally rendered to the screen,
* not the texture data.
*
* @return {undefined}
* @protected
* @ignore
*/
rune.display.Graphic.prototype.m_renderTexture = function() {
this.m_canvas.drawImage(
this.m_texture["data"],
0,
0,
this.m_texture["data"].width,
this.m_texture["data"].height
);
};
//------------------------------------------------------------------------------
// Private prototype methods
//------------------------------------------------------------------------------
/**
* Gets a new texture object.
*
* @param {string|HTMLImageElement} [resource] Resource object or resource name.
* @param {number} [w=1] New texture width.
* @param {number} [h=1] New texture height.
*
* @return {rune.display.Texture}
* @private
*/
rune.display.Graphic.prototype.m_getTexture = function(resource, w, h) {
var data = null;
if(typeof resource === "string") {
data = this['application']['resources'].get(resource)['data'];
} else if(resource instanceof HTMLImageElement) {
data = resource;
} else {
data = new Image(w || 1, h || 1);
}
return new rune.display.Texture(this, data);
};</code></pre>
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