canvas-objects
v0.1.1
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Drawing objects for the HTML Canvas.
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canvas-objects
A Javascript Library for Manipulating the HTML Canvas API.
Overview
canvas-objects
is a Javascript library which abstracts the HTML Canvas API and encapsulates functionality to manipulate high level drawing objects on the canvas.
The Canvas API allows direct drawing to a region of the browser window, via the HTML <canvas>
placeholder element.
The HTML Canvas is well suited for implementing dynamic interfaces within a web page.
More Information:
Objects
ctk: The parent object for the library. All ctk objects are created through ctk functions (e.g.
new ctk.Border()
). Also exposes a few helper drawing methods.ctk.Canvas: Encapsulates a HTML Canvas and a HTML Context object. Exposes passthrough functions for all of the Context functions.
ctk.Point: A simple data object exposing x and y data members.
ctk.Rect: A simple data object encapsulating a rectangle object.
ctk.Border: A drawing object which draws a border on the canvas. Exposes
ctk.Style
properties for controlling the visual display of the border. The dimensions of actk.Border
object is controlled by three rectangle members:BorderRect
,ClientRect
, andContentRect
.ctk.Style: Encapsulates the data properties exposed by the HTML Context object. Useful for storing visual style configurations and also merging them.
ctk.Item: A composite drawing object which combines a
ctk.Border
object with text display in the border's content area.ctk.ProcessLoop: This object encapsulates a timer. Invokes a callback function repeatedly.
ctk.Area: A simple rectangle object with a specific coordinate system.
ctk.AreaMap: Maps coordinates between two
Area
objects.