You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
195 lines
6.8 KiB
195 lines
6.8 KiB
import NodeBase from './NodeBase';
|
|
|
|
/**
|
|
* NOTE: This is a bad base class
|
|
*
|
|
* Child classes are:
|
|
*
|
|
* Image - uses *only* image methods
|
|
* Circle - uses *only* _drawRawCircle
|
|
* CircleImage - uses all
|
|
*
|
|
* TODO: Refactor, move _drawRawCircle to different module, derive Circle from NodeBase
|
|
* Rename this to ImageBase
|
|
* Consolidate common code in Image and CircleImage to base class
|
|
*
|
|
* @class CircleImageBase
|
|
* @extends NodeBase
|
|
*/
|
|
class CircleImageBase extends NodeBase {
|
|
/**
|
|
*
|
|
* @param {Object} options
|
|
* @param {Object} body
|
|
* @param {Label} labelModule
|
|
* @constructor CircleImageBase
|
|
*/
|
|
constructor(options, body, labelModule) {
|
|
super(options, body, labelModule);
|
|
this.labelOffset = 0;
|
|
this.selected = false;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {Object} options
|
|
* @param {Object} [imageObj]
|
|
* @param {Object} [imageObjAlt]
|
|
*/
|
|
setOptions(options, imageObj, imageObjAlt) {
|
|
this.options = options;
|
|
|
|
if (!(imageObj === undefined && imageObjAlt === undefined)) {
|
|
this.setImages(imageObj, imageObjAlt);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Set the images for this node.
|
|
*
|
|
* The images can be updated after the initial setting of options;
|
|
* therefore, this method needs to be reentrant.
|
|
*
|
|
* For correct working in error cases, it is necessary to properly set
|
|
* field 'nodes.brokenImage' in the options.
|
|
*
|
|
* @param {Image} imageObj required; main image to show for this node
|
|
* @param {Image|undefined} imageObjAlt optional; image to show when node is selected
|
|
*/
|
|
setImages(imageObj, imageObjAlt) {
|
|
if (imageObjAlt && this.selected) {
|
|
this.imageObj = imageObjAlt;
|
|
this.imageObjAlt = imageObj;
|
|
} else {
|
|
this.imageObj = imageObj;
|
|
this.imageObjAlt = imageObjAlt;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set selection and switch between the base and the selected image.
|
|
*
|
|
* Do the switch only if imageObjAlt exists.
|
|
*
|
|
* @param {Boolean} selected value of new selected state for current node
|
|
*/
|
|
switchImages(selected) {
|
|
var selection_changed = ((selected && !this.selected) || (!selected && this.selected));
|
|
this.selected = selected; // Remember new selection
|
|
|
|
if (this.imageObjAlt !== undefined && selection_changed) {
|
|
let imageTmp = this.imageObj;
|
|
this.imageObj = this.imageObjAlt;
|
|
this.imageObjAlt = imageTmp;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adjust the node dimensions for a loaded image.
|
|
*
|
|
* Pre: this.imageObj is valid
|
|
*/
|
|
_resizeImage() {
|
|
var width, height;
|
|
|
|
if (this.options.shapeProperties.useImageSize === false) {
|
|
// Use the size property
|
|
var ratio_width = 1;
|
|
var ratio_height = 1;
|
|
|
|
// Only calculate the proper ratio if both width and height not zero
|
|
if (this.imageObj.width && this.imageObj.height) {
|
|
if (this.imageObj.width > this.imageObj.height) {
|
|
ratio_width = this.imageObj.width / this.imageObj.height;
|
|
}
|
|
else {
|
|
ratio_height = this.imageObj.height / this.imageObj.width;
|
|
}
|
|
}
|
|
|
|
width = this.options.size * 2 * ratio_width;
|
|
height = this.options.size * 2 * ratio_height;
|
|
}
|
|
else {
|
|
// Use the image size
|
|
width = this.imageObj.width;
|
|
height = this.imageObj.height;
|
|
}
|
|
|
|
this.width = width;
|
|
this.height = height;
|
|
this.radius = 0.5 * this.width;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {CanvasRenderingContext2D} ctx
|
|
* @param {number} x width
|
|
* @param {number} y height
|
|
* @param {{toArrow: boolean, toArrowScale: (allOptions.edges.arrows.to.scaleFactor|{number}|allOptions.edges.arrows.middle.scaleFactor|allOptions.edges.arrows.from.scaleFactor|Array|number), toArrowType: *, middleArrow: boolean, middleArrowScale: (number|allOptions.edges.arrows.middle.scaleFactor|{number}|Array), middleArrowType: (allOptions.edges.arrows.middle.type|{string}|string|*), fromArrow: boolean, fromArrowScale: (allOptions.edges.arrows.to.scaleFactor|{number}|allOptions.edges.arrows.middle.scaleFactor|allOptions.edges.arrows.from.scaleFactor|Array|number), fromArrowType: *, arrowStrikethrough: (*|boolean|allOptions.edges.arrowStrikethrough|{boolean}), color: undefined, inheritsColor: (string|string|string|allOptions.edges.color.inherit|{string, boolean}|Array|*), opacity: *, hidden: *, length: *, shadow: *, shadowColor: *, shadowSize: *, shadowX: *, shadowY: *, dashes: (*|boolean|Array|allOptions.edges.dashes|{boolean, array}), width: *}} values
|
|
* @private
|
|
*/
|
|
_drawRawCircle(ctx, x, y, values) {
|
|
this.initContextForDraw(ctx, values);
|
|
ctx.circle(x, y, values.size);
|
|
this.performFill(ctx, values);
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {CanvasRenderingContext2D} ctx
|
|
* @param {{toArrow: boolean, toArrowScale: (allOptions.edges.arrows.to.scaleFactor|{number}|allOptions.edges.arrows.middle.scaleFactor|allOptions.edges.arrows.from.scaleFactor|Array|number), toArrowType: *, middleArrow: boolean, middleArrowScale: (number|allOptions.edges.arrows.middle.scaleFactor|{number}|Array), middleArrowType: (allOptions.edges.arrows.middle.type|{string}|string|*), fromArrow: boolean, fromArrowScale: (allOptions.edges.arrows.to.scaleFactor|{number}|allOptions.edges.arrows.middle.scaleFactor|allOptions.edges.arrows.from.scaleFactor|Array|number), fromArrowType: *, arrowStrikethrough: (*|boolean|allOptions.edges.arrowStrikethrough|{boolean}), color: undefined, inheritsColor: (string|string|string|allOptions.edges.color.inherit|{string, boolean}|Array|*), opacity: *, hidden: *, length: *, shadow: *, shadowColor: *, shadowSize: *, shadowX: *, shadowY: *, dashes: (*|boolean|Array|allOptions.edges.dashes|{boolean, array}), width: *}} values
|
|
* @private
|
|
*/
|
|
_drawImageAtPosition(ctx, values) {
|
|
if (this.imageObj.width != 0) {
|
|
// draw the image
|
|
ctx.globalAlpha = 1.0;
|
|
|
|
// draw shadow if enabled
|
|
this.enableShadow(ctx, values);
|
|
|
|
let factor = 1;
|
|
if (this.options.shapeProperties.interpolation === true) {
|
|
factor = (this.imageObj.width / this.width) / this.body.view.scale;
|
|
}
|
|
|
|
this.imageObj.drawImageAtPosition(ctx, factor, this.left, this.top, this.width, this.height);
|
|
|
|
// disable shadows for other elements.
|
|
this.disableShadow(ctx, values);
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {CanvasRenderingContext2D} ctx
|
|
* @param {number} x width
|
|
* @param {number} y height
|
|
* @param {boolean} selected
|
|
* @param {boolean} hover
|
|
* @private
|
|
*/
|
|
_drawImageLabel(ctx, x, y, selected, hover) {
|
|
var yLabel;
|
|
var offset = 0;
|
|
|
|
if (this.height !== undefined) {
|
|
offset = this.height * 0.5;
|
|
var labelDimensions = this.labelModule.getTextSize(ctx, selected, hover);
|
|
if (labelDimensions.lineCount >= 1) {
|
|
offset += labelDimensions.height / 2;
|
|
}
|
|
}
|
|
|
|
yLabel = y + offset;
|
|
|
|
if (this.options.label) {
|
|
this.labelOffset = offset;
|
|
}
|
|
this.labelModule.draw(ctx, x, yLabel, selected, hover, 'hanging');
|
|
}
|
|
}
|
|
|
|
export default CircleImageBase;
|