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// 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 A thick wrapper around shapes with custom paths.
* @author robbyw@google.com (Robby Walker)
*/
goog.provide('goog.graphics.ext.Shape');
goog.require('goog.graphics.ext.StrokeAndFillElement');
/**
* Wrapper for a graphics shape element.
* @param {goog.graphics.ext.Group} group Parent for this element.
* @param {!goog.graphics.ext.Path} path The path to draw.
* @param {boolean=} opt_autoSize Optional flag to specify the path should
* automatically resize to fit the element. Defaults to false.
* @constructor
* @extends {goog.graphics.ext.StrokeAndFillElement}
* @final
*/
goog.graphics.ext.Shape = function(group, path, opt_autoSize) {
this.autoSize_ = !!opt_autoSize;
var graphics = group.getGraphicsImplementation();
var wrapper = graphics.drawPath(path, null, null, group.getWrapper());
goog.graphics.ext.StrokeAndFillElement.call(this, group, wrapper);
this.setPath(path);
};
goog.inherits(goog.graphics.ext.Shape, goog.graphics.ext.StrokeAndFillElement);
/**
* Whether or not to automatically resize the shape's path when the element
* itself is resized.
* @type {boolean}
* @private
*/
goog.graphics.ext.Shape.prototype.autoSize_ = false;
/**
* The original path, specified by the caller.
* @type {goog.graphics.Path}
* @private
*/
goog.graphics.ext.Shape.prototype.path_;
/**
* The bounding box of the original path.
* @type {goog.math.Rect?}
* @private
*/
goog.graphics.ext.Shape.prototype.boundingBox_ = null;
/**
* The scaled path.
* @type {goog.graphics.Path}
* @private
*/
goog.graphics.ext.Shape.prototype.scaledPath_;
/**
* Get the path drawn by this shape.
* @return {goog.graphics.Path?} The path drawn by this shape.
*/
goog.graphics.ext.Shape.prototype.getPath = function() {
return this.path_;
};
/**
* Set the path to draw.
* @param {goog.graphics.ext.Path} path The path to draw.
*/
goog.graphics.ext.Shape.prototype.setPath = function(path) {
this.path_ = path;
if (this.autoSize_) {
this.boundingBox_ = path.getBoundingBox();
}
this.scaleAndSetPath_();
};
/**
* Scale the internal path to fit.
* @private
*/
goog.graphics.ext.Shape.prototype.scaleAndSetPath_ = function() {
this.scaledPath_ = this.boundingBox_ ?
this.path_.clone().modifyBounds(
-this.boundingBox_.left, -this.boundingBox_.top,
this.getWidth() / (this.boundingBox_.width || 1),
this.getHeight() / (this.boundingBox_.height || 1)) :
this.path_;
var wrapper = this.getWrapper();
if (wrapper) {
wrapper.setPath(this.scaledPath_);
}
};
/**
* Redraw the ellipse. Called when the coordinate system is changed.
* @protected
* @override
*/
goog.graphics.ext.Shape.prototype.redraw = function() {
goog.graphics.ext.Shape.superClass_.redraw.call(this);
if (this.autoSize_) {
this.scaleAndSetPath_();
}
};
/**
* @return {boolean} Whether the shape is parent dependent.
* @protected
* @override
*/
goog.graphics.ext.Shape.prototype.checkParentDependent = function() {
return this.autoSize_ ||
goog.graphics.ext.Shape.superClass_.checkParentDependent.call(this);
};
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