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import { AttributeTransformer, Properties } from '.';
export class GridTransformer implements AttributeTransformer {
private maxWidth: number;
private maxHeight: number;
private isCenter: boolean;
constructor() {
this.maxWidth = YamlStore.getInstance().options.width;
this.maxHeight = YamlStore.getInstance().options.height;
this.isCenter = YamlStore.getInstance().options.center;
}
private gridAttributeRegex =
/^(?:(-?\d*(?:px)?)(?:\s*|x)(-?\d*(?:px)?)|(center|top|bottom|left|right|topleft|topright|bottomleft|bottomright))$/m;
transform(element: Properties) {
let defaultDrop;
let defaultUnit;
const isAbsolute = element.getAttribute('absolute') == 'true';
if (isAbsolute) {
defaultDrop = '480px 700px';
defaultUnit = 'px';
} else {
defaultDrop = '50 100';
defaultUnit = '%';
}
const drop = element.getAttribute('drop');
if (drop != undefined) {
const drag = element.getAttribute('drag') ?? defaultDrop;
const grid = this.read(drag, drop, isAbsolute);
if (grid != undefined) {
const left = this.leftOf(grid) + defaultUnit;
const top = this.topOf(grid) + defaultUnit;
const height = this.heightOf(grid) + defaultUnit;
const width = this.widthOf(grid) + defaultUnit;
element.addStyle('position', 'absolute');
element.addStyle('left', left);
element.addStyle('top', top);
element.addStyle('height', height);
element.addStyle('width', width);
if (isAbsolute) {
element.addStyle('min-height', height);
}
}
element.deleteAttribute('drag');
element.deleteAttribute('drop');
}
if (element.getAttribute('align') || drop) {
const flow = element.getAttribute('flow');
const [align, alignItems, justifyContent, stretch] = this.getAlignment(element.getAttribute('align'), flow);
const justifyCtx = element.getAttribute('justify-content') ?? justifyContent;
if (align) {
element.addAttribute('align', align, false);
}
if (stretch) {
element.addClass(stretch);
}
switch (flow) {
case 'row':
element.addStyle('display', 'flex');
element.addStyle('flex-direction', 'row');
element.addStyle('align-items', alignItems);
element.addStyle('justify-content', justifyCtx);
element.addClass('flex-even');
break;
case 'col':
default:
element.addStyle('display', 'flex');
element.addStyle('flex-direction', 'column');
element.addStyle('align-items', alignItems);
element.addStyle('justify-content', justifyCtx);
break;
}
Iif (this.isCenter != undefined && !this.isCenter) {
element.addStyle('align-items', 'start');
}
element.deleteAttribute('flow');
element.deleteAttribute('justify-content');
}
}
getAlignment(input: string, flow: string): [string, string, string, string] {
const direction = flow ?? 'col';
switch (input) {
case 'topleft':
if (direction == 'col') {
return ['left', 'flex-start', 'flex-start', undefined];
} else {
return ['left', 'flex-start', 'space-evenly', undefined];
}
case 'topright':
if (direction == 'col') {
return ['right', 'flex-end', 'flex-start', undefined];
} else {
return ['right', 'flex-start', 'space-evenly', undefined];
}
case 'bottomright':
if (direction == 'col') {
return ['right', 'flex-end', 'flex-end', undefined];
} else {
return ['right', 'flex-end', 'space-evenly', undefined];
}
case 'bottomleft':
if (direction == 'col') {
return ['left', 'flex-start', 'flex-end', undefined];
} else {
return ['left', 'flex-end', 'space-evenly', undefined];
}
case 'left':
if (direction == 'col') {
return ['left', 'flex-start', 'space-evenly', undefined];
} else {
return ['left', 'center', 'space-evenly', undefined];
}
case 'right':
if (direction == 'col') {
return ['right', 'flex-end', 'space-evenly', undefined];
} else {
return ['right', 'center', 'space-evenly', undefined];
}
case 'top':
if (direction == 'col') {
return [undefined, 'center', 'flex-start', undefined];
} else {
return [undefined, 'flex-start', 'space-evenly', undefined];
}
case 'bottom':
if (direction == 'col') {
return [undefined, 'center', 'flex-end', undefined];
} else {
return [undefined, 'flex-end', 'space-evenly', undefined];
}
case 'stretch':
if (direction == 'col') {
return [undefined, 'center', 'space-evenly', 'stretch-column'];
} else {
return [undefined, 'center', 'space-evenly', 'stretch-row'];
}
case 'block':
case 'justify':
return ['justify', 'center', 'space-evenly', undefined];
case 'center':
default:
// align - alignItems - justifyContent
return [undefined, 'center', 'center', undefined];
}
}
read(drag: string, drop: string, isAbsolute: boolean): Map<string, number> {
try {
const result = new Map<string, number>();
result.set('slideWidth', this.maxWidth);
result.set('slideHeight', this.maxHeight);
if (isAbsolute) {
result.set('maxWidth', this.maxWidth);
result.set('maxHeight', this.maxHeight);
return this.readValues(drag, drop, result, this.toPixel);
} else {
result.set('maxWidth', 100);
result.set('maxHeight', 100);
return this.readValues(drag, drop, result, this.toRelativeValue);
}
} catch (ex) {
return undefined;
}
}
readValues(drag: string, drop: string, result: Map<string, number>, valueTransformer: (max: number, input: string) => number): Map<string, number> {
try {
const [, width, height] = this.gridAttributeRegex.exec(drag);
const [, x, y, name] = this.gridAttributeRegex.exec(drop);
if (width) {
result.set('width', valueTransformer(result.get('slideWidth'), width));
}
if (height) {
result.set('height', valueTransformer(result.get('slideHeight'), height));
}
if (name) {
const [nx, ny] = this.getXYof(name, result.get('width'), result.get('height'), result.get('maxWidth'), result.get('maxHeight'));
result.set('x', nx);
result.set('y', ny);
} else {
if (x) {
result.set('x', valueTransformer(result.get('slideWidth'), x));
}
if (y) {
result.set('y', valueTransformer(result.get('slideHeight'), y));
}
}
return result;
} catch (ex) {
return undefined;
}
}
toRelativeValue(max: number, input: string): number {
if (input.toLowerCase().endsWith('px')) {
return Number(input.toLowerCase().replace('px', '').trim()) / max * 100;
} else {
return Number(input);
}
}
toPixel(max: number, input: string): number {
Iif (input.toLowerCase().endsWith('px')) {
return Number(input.toLowerCase().replace('px', '').trim());
} else {
return (max / 100) * Number(input);
}
}
getXYof(name: string, width: number, height: number, maxWidth: number, maxHeight: number): [number, number] {
switch (name) {
case 'topleft':
return [0, 0];
case 'topright':
return [maxWidth - width, 0];
case 'bottomleft':
return [0, maxHeight - height];
case 'bottomright':
return [maxWidth - width, maxHeight - height];
case 'left':
return [0, (maxHeight - height) / 2];
case 'right':
return [maxWidth - width, (maxHeight - height) / 2];
case 'top':
return [(maxWidth - width) / 2, 0];
case 'bottom':
return [(maxWidth - width) / 2, maxHeight - height];
case 'center':
return [(maxWidth - width) / 2, (maxHeight - height) / 2];
default:
return [0, 0];
}
}
leftOf(grid: Map<string, number>): number {
if (grid.get('x') < 0) {
return grid.get('maxWidth') + grid.get('x') - grid.get('width');
} else {
return grid.get('x');
}
}
topOf(grid: Map<string, number>): number {
if (grid.get('y') < 0) {
return grid.get('maxHeight') + grid.get('y') - grid.get('height');
} else {
return grid.get('y');
}
}
heightOf(grid: Map<string, number>): number {
return grid.get('height');
}
widthOf(grid: Map<string, number>): number {
return grid.get('width');
}
}
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