136 lines
5.5 KiB
JavaScript
136 lines
5.5 KiB
JavaScript
// Copyright 2007 The Closure Library Authors. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS-IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
|
|
/**
|
|
* @fileoverview Graphics utility functions and factory methods.
|
|
* @author arv@google.com (Erik Arvidsson)
|
|
* @see ../demos/graphics/advancedcoordinates.html
|
|
* @see ../demos/graphics/advancedcoordinates2.html
|
|
* @see ../demos/graphics/basicelements.html
|
|
* @see ../demos/graphics/events.html
|
|
* @see ../demos/graphics/modifyelements.html
|
|
* @see ../demos/graphics/tiger.html
|
|
*/
|
|
|
|
|
|
goog.provide('goog.graphics');
|
|
|
|
goog.require('goog.graphics.CanvasGraphics');
|
|
goog.require('goog.graphics.SvgGraphics');
|
|
goog.require('goog.graphics.VmlGraphics');
|
|
goog.require('goog.userAgent');
|
|
|
|
|
|
/**
|
|
* Returns an instance of goog.graphics.AbstractGraphics that knows how to draw
|
|
* for the current platform (A factory for the proper Graphics implementation)
|
|
* @param {string|number} width The width in pixels. Strings
|
|
* expressing percentages of parent with (e.g. '80%') are also accepted.
|
|
* @param {string|number} height The height in pixels. Strings
|
|
* expressing percentages of parent with (e.g. '80%') are also accepted.
|
|
* @param {?number=} opt_coordWidth The optional coordinate width - if
|
|
* omitted or null, defaults to same as width.
|
|
* @param {?number=} opt_coordHeight The optional coordinate height - if
|
|
* omitted or null, defaults to same as height.
|
|
* @param {goog.dom.DomHelper=} opt_domHelper The DOM helper object for the
|
|
* document we want to render in.
|
|
* @return {goog.graphics.AbstractGraphics} The created instance.
|
|
* @deprecated goog.graphics is deprecated. It existed to abstract over browser
|
|
* differences before the canvas tag was widely supported. See
|
|
* http://en.wikipedia.org/wiki/Canvas_element for details.
|
|
*/
|
|
goog.graphics.createGraphics = function(width, height, opt_coordWidth,
|
|
opt_coordHeight, opt_domHelper) {
|
|
var graphics;
|
|
if (goog.userAgent.IE && !goog.userAgent.isVersionOrHigher('9')) {
|
|
graphics = new goog.graphics.VmlGraphics(width, height,
|
|
opt_coordWidth, opt_coordHeight, opt_domHelper);
|
|
} else if (goog.userAgent.WEBKIT &&
|
|
(!goog.userAgent.isVersionOrHigher('420') ||
|
|
goog.userAgent.MOBILE)) {
|
|
graphics = new goog.graphics.CanvasGraphics(width, height,
|
|
opt_coordWidth, opt_coordHeight, opt_domHelper);
|
|
} else {
|
|
graphics = new goog.graphics.SvgGraphics(width, height,
|
|
opt_coordWidth, opt_coordHeight, opt_domHelper);
|
|
}
|
|
|
|
// Create the dom now, because all drawing methods require that the
|
|
// main dom element (the canvas) has been already created.
|
|
graphics.createDom();
|
|
|
|
return graphics;
|
|
};
|
|
|
|
|
|
/**
|
|
* Returns an instance of goog.graphics.AbstractGraphics that knows how to draw
|
|
* for the current platform (A factory for the proper Graphics implementation)
|
|
* @param {string|number} width The width in pixels. Strings
|
|
* expressing percentages of parent with (e.g. '80%') are also accepted.
|
|
* @param {string|number} height The height in pixels. Strings
|
|
* expressing percentages of parent with (e.g. '80%') are also accepted.
|
|
* @param {?number=} opt_coordWidth The optional coordinate width, defaults to
|
|
* same as width.
|
|
* @param {?number=} opt_coordHeight The optional coordinate height, defaults to
|
|
* same as height.
|
|
* @param {goog.dom.DomHelper=} opt_domHelper The DOM helper object for the
|
|
* document we want to render in.
|
|
* @return {goog.graphics.AbstractGraphics} The created instance.
|
|
* @deprecated goog.graphics is deprecated. It existed to abstract over browser
|
|
* differences before the canvas tag was widely supported. See
|
|
* http://en.wikipedia.org/wiki/Canvas_element for details.
|
|
*/
|
|
goog.graphics.createSimpleGraphics = function(width, height,
|
|
opt_coordWidth, opt_coordHeight, opt_domHelper) {
|
|
if (goog.userAgent.MAC && goog.userAgent.GECKO &&
|
|
!goog.userAgent.isVersionOrHigher('1.9a')) {
|
|
// Canvas is 6x faster than SVG on Mac FF 2.0
|
|
var graphics = new goog.graphics.CanvasGraphics(
|
|
width, height, opt_coordWidth, opt_coordHeight,
|
|
opt_domHelper);
|
|
graphics.createDom();
|
|
return graphics;
|
|
}
|
|
|
|
// Otherwise, defer to normal graphics object creation.
|
|
return goog.graphics.createGraphics(width, height, opt_coordWidth,
|
|
opt_coordHeight, opt_domHelper);
|
|
};
|
|
|
|
|
|
/**
|
|
* Static function to check if the current browser has Graphics support.
|
|
* @return {boolean} True if the current browser has Graphics support.
|
|
* @deprecated goog.graphics is deprecated. It existed to abstract over browser
|
|
* differences before the canvas tag was widely supported. See
|
|
* http://en.wikipedia.org/wiki/Canvas_element for details.
|
|
*/
|
|
goog.graphics.isBrowserSupported = function() {
|
|
if (goog.userAgent.IE) {
|
|
return goog.userAgent.isVersionOrHigher('5.5');
|
|
}
|
|
if (goog.userAgent.GECKO) {
|
|
return goog.userAgent.isVersionOrHigher('1.8');
|
|
}
|
|
if (goog.userAgent.OPERA) {
|
|
return goog.userAgent.isVersionOrHigher('9.0');
|
|
}
|
|
if (goog.userAgent.WEBKIT) {
|
|
return goog.userAgent.isVersionOrHigher('412');
|
|
}
|
|
return false;
|
|
};
|