archive-gh-me/WebWorldWind
1
0
Fork 0
mirror of https://github.com/NASAWorldWind/WebWorldWind.git synced 2026-01-25 15:23:04 +00:00
Code Issues Projects Releases Wiki Activity

Added exception handling to TextRenderer constructor

Browse Source 
- Modified documentation to reflect changes in the refactor.
This commit is contained in:
Miguel Del Castillo 2018-01-09 12:22:06 -06:00
parent 5acb0fd72b
commit a02bb71d09
1 changed files with 15 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/render/TextRenderer.js
View File

@ -43,8 +43,15 @@ define([
* @classdesc Provides methods useful for displaying text. An instance of this class is attached to the
* WorldWindow {@link DrawContext} and is not intended to be used independently of that. Applications typically do
* not create instances of this class.
* @param {drawContext} drawContext The current draw context. Typically the same draw context that TextRenderer
* is attached to.
* @throws {ArgumentError} If the specified draw context is null or undefined.
*/
var TextRenderer = function (dc) {
var TextRenderer = function (drawContext) {
if (!drawContext) {
throw new ArgumentError(Logger.logMessage(Logger.LEVEL_SEVERE, "TextRenderer", "constructor",
"missingDrawContext"));
}
// Internal use only. Intentionally not documented.
this.canvas2D = document.createElement("canvas");
@ -52,8 +59,10 @@ define([
// Internal use only. Intentionally not documented.
this.ctx2D = this.canvas2D.getContext("2d");
this.dc = dc;
// Internal use only. Intentionally not documented.
this.dc = drawContext;
// Internal use only. Intentionally not documented.
this.enableOutline = false;
// Internal use only. Intentionally not documented.
@ -65,6 +74,7 @@ define([
// Internal use only. Intentionally not documented.
this.strokeWidth = 4;
// Internal use only. Intentionally not documented.
this.typeFace = new Font(14);
};
@ -99,15 +109,12 @@ define([
};
/**
* Creates a texture for a specified text string, a specified font and an optional outline.
* Creates a texture for a specified text string.
* @param {String} text The text string.
* @param {Font} font The font to use.
* @param {Boolean} outline Indicates whether the text is drawn with a thin black outline.
* @returns {Texture} A texture for the specified text string and font.
*/
TextRenderer.prototype.createTexture = function (text) {
var gl = this.dc.currentGlContext,
ctx2D = this.ctx2D,
var ctx2D = this.ctx2D,
canvas2D = this.canvas2D,
textSize = this.textSize(text, this.typeFace, this.enableOutline),
lines = text.split("\n"),
@ -144,7 +151,7 @@ define([
ctx2D.translate(0, this.typeFace.size * (1 + this.lineSpacing) + strokeOffset);
}
return new Texture(gl, canvas2D);
return new Texture(this.dc.currentGlContext, canvas2D);
};
/**