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* Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
* http://paperjs.org/
*
* Copyright (c) 2011 - 2020, Jürg Lehni & Jonathan Puckey
* http://juerglehni.com/ & https://puckey.studio/
*
* Distributed under the MIT license. See LICENSE file for details.
*
* All rights reserved.
*/
// TODO: remove eslint-disable comment and deal with errors over time
/* eslint-disable */
import { ref } from '~/globals';
import { Base } from '~/straps';
import { Point } from '~/basic/Point';
import { Change } from '~/item/ChangeFlag';
import { Group } from '~/item/Group';
import { Item } from '~/item/Item';
import { CompoundPath } from '~/path/CompoundPath';
import { TextItem } from '~/text/TextItem';
import { Color } from './Color';
/**
* @name Style
*
* @class Style is used for changing the visual styles of items
* contained within a Paper.js project and is returned by
* {@link Item#style} and {@link Project#currentStyle}.
*
* All properties of Style are also reflected directly in {@link Item},
* i.e.: {@link Item#fillColor}.
*
* To set multiple style properties in one go, you can pass an object to
* {@link Item#style}. This is a convenient way to define a style once and
* apply it to a series of items:
*
* @classexample {@paperscript} // Styling paths
*
* var path = new Path.Circle(new Point(80, 50), 30);
* path.style = {
* fillColor: new Color(1, 0, 0),
* strokeColor: 'black',
* strokeWidth: 5
* };
*
* @classexample {@paperscript} // Styling text items
* var text = new PointText(view.center);
* text.content = 'Hello world.';
* text.style = {
* fontFamily: 'Courier New',
* fontWeight: 'bold',
* fontSize: 20,
* fillColor: 'red',
* justification: 'center'
* };
*
* @classexample {@paperscript} // Styling groups
* var path1 = new Path.Circle({
* center: [100, 50],
* radius: 30
* });
*
* var path2 = new Path.Rectangle({
* from: [170, 20],
* to: [230, 80]
* });
*
* var group = new Group(path1, path2);
*
* // All styles set on a group are automatically
* // set on the children of the group:
* group.style = {
* strokeColor: 'black',
* dashArray: [4, 10],
* strokeWidth: 4,
* strokeCap: 'round'
* };
*
*/
export const Style = Base.extend(
// @ts-expect-error = 'new' expression, whose target lacks a construct signature
new (function () {
// Defaults for items without text-styles (PathItem, Shape, Raster, ...):
var itemDefaults = {
// Paths
fillColor: null,
fillRule: 'nonzero',
strokeColor: null,
strokeWidth: 1,
strokeCap: 'butt',
strokeJoin: 'miter',
strokeScaling: true,
miterLimit: 10,
dashOffset: 0,
dashArray: [],
// Shadows
shadowColor: null,
shadowBlur: 0,
shadowOffset: new Point(),
// Selection
selectedColor: null,
},
// Defaults for Group, Layer and Project (anything item that allows nesting
// needs to be able to pass down text styles as well):
groupDefaults = Base.set({}, itemDefaults, {
// Characters
fontFamily: 'sans-serif',
fontWeight: 'normal',
fontSize: 12,
leading: null,
// Paragraphs
justification: 'left',
}),
// Defaults for TextItem (override default fillColor to black):
textDefaults = Base.set({}, groupDefaults, {
fillColor: new Color(), // black
}),
flags = {
strokeWidth: /*#=*/ Change.STROKE,
strokeCap: /*#=*/ Change.STROKE,
strokeJoin: /*#=*/ Change.STROKE,
// strokeScaling can change the coordinates of cached path items
strokeScaling: /*#=*/ Change.STROKE | Change.GEOMETRY,
miterLimit: /*#=*/ Change.STROKE,
fontFamily: /*#=*/ Change.GEOMETRY,
fontWeight: /*#=*/ Change.GEOMETRY,
fontSize: /*#=*/ Change.GEOMETRY,
font: /*#=*/ Change.GEOMETRY, // deprecated, links to fontFamily
leading: /*#=*/ Change.GEOMETRY,
justification: /*#=*/ Change.GEOMETRY,
},
item = {
// Enforce creation of beans, as bean getters have hidden parameters,
// see _dontMerge argument below.
beans: true,
},
fields = /** @lends Style# */ {
_class: 'Style',
beans: true,
initialize: function Style(style, _owner, _project) {
// We keep values in a separate object that we can iterate over.
this._values = {};
this._owner = _owner;
this._project = (_owner && _owner._project) || _project || ref.paper.project;
// Use different defaults based on the owner
this._defaults =
!_owner || _owner instanceof Group
? groupDefaults
: _owner instanceof TextItem
? textDefaults
: itemDefaults;
if (style) this.set(style);
},
};
// Iterate over groupDefaults to inject getters / setters, to cover all
// properties
Base.each(groupDefaults, function (value, key) {
var isColor = /Color$/.test(key),
isPoint = key === 'shadowOffset',
part = Base.capitalize(key),
flag = flags[key],
set = 'set' + part,
get = 'get' + part;
// Define getters and setters to be injected into this class.
// This is how style values are handled:
// - Style values are all stored in this._values
// - The style object starts with an empty _values object, with fallback
// on _defaults through code in the getter below.
// - Only the styles that are explicitly set on the object get defined
// in _values.
// - Color values are not stored as converted colors immediately. The
// raw value is stored, and conversion only happens in the getter.
fields[set] = function (value) {
var owner = this._owner,
children = owner && owner._children,
applyToChildren = children && children.length > 0 && !(owner instanceof CompoundPath);
// Only unify styles on children of Groups, excluding CompoundPaths.
if (applyToChildren) {
for (var i = 0, l = children.length; i < l; i++) children[i]._style[set](value);
}
// Always store selectedColor in item _values to make sure that
// group selected bounds and position color is coherent whether it
// has children or not when the value is set.
if ((key === 'selectedColor' || !applyToChildren) && key in this._defaults) {
var old = this._values[key];
if (old !== value) {
if (isColor) {
// The old value may be a native string or other color
// description that wasn't coerced to a color object yet
if (old) {
Color._setOwner(old, null);
if (typeof old !== 'string') old._canvasStyle = null;
}
if (value && value.constructor === Color) {
// NOTE: If value is not a Color, it is only
// converted and cloned in the getter further down.
value = Color._setOwner(
value,
owner,
// Only provide a color-setter if the style
// is to be applied to the children:
applyToChildren && set
);
}
}
// NOTE: We do not convert the values to Colors in the
// setter. This only happens once the getter is called.
this._values[key] = value;
// Notify the owner of the style change STYLE is always set,
// additional flags come from flags, as used for STROKE:
if (owner) owner._changed(flag || /*#=*/ Change.STYLE);
}
}
};
fields[get] = function (_dontMerge) {
var owner = this._owner,
children = owner && owner._children,
applyToChildren = children && children.length > 0 && !(owner instanceof CompoundPath),
value;
// If the owner has children, walk through all of them and see if
// they all have the same style.
// If true is passed for _dontMerge, don't merge children styles.
if (applyToChildren && !_dontMerge) {
for (var i = 0, l = children.length; i < l; i++) {
var childValue = children[i]._style[get]();
if (!i) {
value = childValue;
} else if (!Base.equals(value, childValue)) {
// If there is another child with a different
// style, the style is not defined:
return undefined;
}
}
} else if (key in this._defaults) {
var value = this._values[key];
if (value === undefined) {
value = this._defaults[key];
// Clone defaults if available:
if (value && value.clone) {
value = value.clone();
}
} else {
var ctor = isColor ? Color : isPoint ? Point : null;
if (ctor && !(value && value.constructor === ctor)) {
// Convert to a Color / Point, and stored result of the
// conversion.
this._values[key] = value = ctor.read([value], 0, {
readNull: true,
clone: true,
});
}
}
}
if (value && isColor) {
// Color._setOwner() may clone the color if it already has a
// different owner (e.g. resulting from `childValue` above).
// Only provide a color-setter if the style is to be applied to
// the children:
value = Color._setOwner(value, owner, applyToChildren && set);
}
return value;
};
// Inject style getters and setters into the Item class, which redirect
// calls to the linked style object.
item[get] = function (_dontMerge) {
return this._style[get](_dontMerge);
};
item[set] = function (value) {
this._style[set](value);
};
});
// Create aliases for deprecated properties. The lookup table contains the
// part after 'get' / 'set':
// TODO: Remove once deprecated long enough, after December 2016.
Base.each(
{
Font: 'FontFamily',
WindingRule: 'FillRule',
},
function (value, key) {
var get = 'get' + key,
set = 'set' + key;
fields[get] = item[get] = '#get' + value;
fields[set] = item[set] = '#set' + value;
}
);
Item.inject(item);
return fields;
})(),
/** @lends Style# */ {
set: function (style) {
// If the passed style object is also a Style, clone its cloneable
// fields rather than simply copying them.
var isStyle = style instanceof Style,
// Use the other stlyle's _values object for iteration
values = isStyle ? style._values : style;
if (values) {
for (var key in values) {
if (key in this._defaults) {
var value = values[key];
// Delegate to setter, so Group styles work too.
this[key] = value && isStyle && value.clone ? value.clone() : value;
}
}
}
},
equals: function (style) {
// Since we're dealing with defaults, loop through style values in both
// objects and compare with default fall-back. But in the secondary pass
// only check against keys that weren't already in the first object:
function compare(style1, style2, secondary) {
var values1 = style1._values,
values2 = style2._values,
defaults2 = style2._defaults;
for (var key in values1) {
var value1 = values1[key],
value2 = values2[key];
if (!(secondary && key in values2) && !Base.equals(value1, value2 === undefined ? defaults2[key] : value2))
return false;
}
return true;
}
return (
style === this ||
(style &&
this._class === style._class &&
// @ts-expect-error = Expected 3 arguments, but got 2
compare(this, style) &&
compare(style, this, true)) ||
false
);
},
_dispose: function () {
var color;
color = this.getFillColor();
if (color) color._canvasStyle = null;
color = this.getStrokeColor();
if (color) color._canvasStyle = null;
color = this.getShadowColor();
if (color) color._canvasStyle = null;
},
// DOCS: Style#hasFill()
hasFill: function () {
var color = this.getFillColor();
return !!color && color.alpha > 0;
},
// DOCS: Style#hasStroke()
hasStroke: function () {
var color = this.getStrokeColor();
return !!color && color.alpha > 0 && this.getStrokeWidth() > 0;
},
// DOCS: Style#hasShadow()
hasShadow: function () {
var color = this.getShadowColor();
// In order to draw a shadow, we need either a shadow blur or an
// offset, or both.
return !!color && color.alpha > 0 && (this.getShadowBlur() > 0 || !this.getShadowOffset().isZero());
},
/**
* The view that this style belongs to.
*
* @bean
* @type View
*/
getView: function () {
return this._project._view;
},
// Overrides
getFontStyle: function () {
var fontSize = this.getFontSize();
// To prevent an obscure iOS 7 crash, we have to convert the size to a
// string first before passing it to the regular expression.
// The following nonsensical statement would also prevent the bug,
// proving that the issue is not the regular expression itself, but
// something deeper down in the optimizer:
// `if (size === 0) size = 0;`
return (
this.getFontWeight() + ' ' + fontSize + (/[a-z]/i.test(fontSize + '') ? ' ' : 'px ') + this.getFontFamily()
);
},
/**
* @bean
* @private
* @deprecated use {@link #fontFamily} instead.
*/
getFont: '#getFontFamily',
setFont: '#setFontFamily',
getLeading: function getLeading() {
// Override leading to return fontSize * 1.2 by default.
var leading = (getLeading as any).base.call(this),
fontSize = this.getFontSize();
if (/pt|em|%|px/.test(fontSize)) fontSize = this.getView().getPixelSize(fontSize);
return leading != null ? leading : fontSize * 1.2;
},
// DOCS: why isn't the example code showing up?
/**
* Style objects don't need to be created directly. Just pass an object to
* {@link Item#style} or {@link Project#currentStyle}, it will be converted
* to a Style object internally.
*
* @name Style#initialize
* @param {Object} style
*/
/**
* {@grouptitle Stroke Style}
*
* The color of the stroke.
*
* @name Style#strokeColor
* @property
* @type ?Color
*
* @example {@paperscript}
* // Setting the stroke color of a path:
*
* // Create a circle shaped path at { x: 80, y: 50 }
* // with a radius of 35:
* var circle = new Path.Circle(new Point(80, 50), 35);
*
* // Set its stroke color to RGB red:
* circle.strokeColor = new Color(1, 0, 0);
*/
/**
* The width of the stroke.
*
* @name Style#strokeWidth
* @property
* @type Number
* @default 1
*
* @example {@paperscript}
* // Setting an item's stroke width:
*
* // Create a circle shaped path at { x: 80, y: 50 }
* // with a radius of 35:
* var circle = new Path.Circle(new Point(80, 50), 35);
*
* // Set its stroke color to black:
* circle.strokeColor = 'black';
*
* // Set its stroke width to 10:
* circle.strokeWidth = 10;
*/
/**
* The shape to be used at the beginning and end of open {@link Path} items,
* when they have a stroke.
*
* @name Style#strokeCap
* @property
* @type String
* @values 'round', 'square', 'butt'
* @default 'butt'
*
* @example {@paperscript height=200}
* // A look at the different stroke caps:
*
* var line = new Path(new Point(80, 50), new Point(420, 50));
* line.strokeColor = 'black';
* line.strokeWidth = 20;
*
* // Select the path, so we can see where the stroke is formed:
* line.selected = true;
*
* // Set the stroke cap of the line to be round:
* line.strokeCap = 'round';
*
* // Copy the path and set its stroke cap to be square:
* var line2 = line.clone();
* line2.position.y += 50;
* line2.strokeCap = 'square';
*
* // Make another copy and set its stroke cap to be butt:
* var line2 = line.clone();
* line2.position.y += 100;
* line2.strokeCap = 'butt';
*/
/**
* The shape to be used at the segments and corners of {@link Path} items
* when they have a stroke.
*
* @name Style#strokeJoin
* @property
* @type String
* @values 'miter', 'round', 'bevel'
* @default 'miter'
*
* @example {@paperscript height=120}
* // A look at the different stroke joins:
* var path = new Path();
* path.add(new Point(80, 100));
* path.add(new Point(120, 40));
* path.add(new Point(160, 100));
* path.strokeColor = 'black';
* path.strokeWidth = 20;
*
* // Select the path, so we can see where the stroke is formed:
* path.selected = true;
*
* var path2 = path.clone();
* path2.position.x += path2.bounds.width * 1.5;
* path2.strokeJoin = 'round';
*
* var path3 = path2.clone();
* path3.position.x += path3.bounds.width * 1.5;
* path3.strokeJoin = 'bevel';
*/
/**
* Specifies whether the stroke is to be drawn taking the current affine
* transformation into account (the default behavior), or whether it should
* appear as a non-scaling stroke.
*
* @name Style#strokeScaling
* @property
* @type Boolean
* @default true
*/
/**
* The dash offset of the stroke.
*
* @name Style#dashOffset
* @property
* @type Number
* @default 0
*/
/**
* Specifies an array containing the dash and gap lengths of the stroke.
*
* @example {@paperscript}
* var path = new Path.Circle(new Point(80, 50), 40);
* path.strokeWidth = 2;
* path.strokeColor = 'black';
*
* // Set the dashed stroke to [10pt dash, 4pt gap]:
* path.dashArray = [10, 4];
*
* @name Style#dashArray
* @property
* @type Number[]
* @default []
*/
/**
* The miter limit of the stroke. When two line segments meet at a sharp
* angle and miter joins have been specified for {@link #strokeJoin}, it is
* possible for the miter to extend far beyond the {@link #strokeWidth} of
* the path. The miterLimit imposes a limit on the ratio of the miter length
* to the {@link #strokeWidth}.
*
* @name Style#miterLimit
* @property
* @default 10
* @type Number
*/
/**
* {@grouptitle Fill Style}
*
* The fill color.
*
* @name Style#fillColor
* @property
* @type ?Color
*
* @example {@paperscript}
* // Setting the fill color of a path to red:
*
* // Create a circle shaped path at { x: 80, y: 50 }
* // with a radius of 35:
* var circle = new Path.Circle(new Point(80, 50), 35);
*
* // Set the fill color of the circle to RGB red:
* circle.fillColor = new Color(1, 0, 0);
*/
/**
* The fill-rule with which the shape gets filled. Please note that only
* modern browsers support fill-rules other than `'nonzero'`.
*
* @name Style#fillRule
* @property
* @type String
* @values 'nonzero', 'evenodd'
* @default 'nonzero'
*/
/**
* {@grouptitle Shadow Style}
*
* The shadow color.
*
* @property
* @name Style#shadowColor
* @type ?Color
*
* @example {@paperscript}
* // Creating a circle with a black shadow:
*
* var circle = new Path.Circle({
* center: [80, 50],
* radius: 35,
* fillColor: 'white',
* // Set the shadow color of the circle to RGB black:
* shadowColor: new Color(0, 0, 0),
* // Set the shadow blur radius to 12:
* shadowBlur: 12,
* // Offset the shadow by { x: 5, y: 5 }
* shadowOffset: new Point(5, 5)
* });
*/
/**
* The shadow's blur radius.
*
* @property
* @name Style#shadowBlur
* @type Number
* @default 0
*/
/**
* The shadow's offset.
*
* @property
* @name Style#shadowOffset
* @type Point
* @default 0
*/
/**
* {@grouptitle Selection Style}
*
* The color the item is highlighted with when selected. If the item does
* not specify its own color, the color defined by its layer is used instead.
*
* @name Style#selectedColor
* @property
* @type ?Color
*/
/**
* {@grouptitle Character Style}
*
* The font-family to be used in text content.
*
* @name Style#fontFamily
* @type String
* @default 'sans-serif'
*/
/**
*
* The font-weight to be used in text content.
*
* @name Style#fontWeight
* @type String|Number
* @default 'normal'
*/
/**
* The font size of text content, as a number in pixels, or as a string with
* optional units `'px'`, `'pt'` and `'em'`.
*
* @name Style#fontSize
* @type Number|String
* @default 10
*/
/**
*
* The font-family to be used in text content, as one string.
*
* @name Style#font
* @type String
* @default 'sans-serif'
* @deprecated use {@link #fontFamily} instead.
*/
/**
* The text leading of text content.
*
* @name Style#leading
* @type Number|String
* @default fontSize * 1.2
*/
/**
* {@grouptitle Paragraph Style}
*
* The justification of text paragraphs.
*
* @name Style#justification
* @type String
* @values 'left', 'right', 'center'
* @default 'left'
*/
}
);
ref.Style = Style;
|