mirror of
https://github.com/zhigang1992/DefinitelyTyped.git
synced 2026-05-27 22:35:23 +08:00
1035 lines
32 KiB
TypeScript
1035 lines
32 KiB
TypeScript
function sample1() {
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const canvas = new fabric.Canvas('c', {
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hoverCursor: 'pointer',
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selection: false,
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});
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canvas.on('object:moving', (e: fabric.IEvent) => {
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e.target.opacity = 0.5;
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});
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canvas.on('object:modified', (e: fabric.IEvent) => {
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e.target.opacity = 1;
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});
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for (let i = 0; i < 15; i++) {
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fabric.Image.fromURL('../assets/ladybug.png', img => {
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img.set({
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left: fabric.util.getRandomInt(0, 600),
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top: fabric.util.getRandomInt(0, 500),
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angle: fabric.util.getRandomInt(0, 90)
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});
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img.perPixelTargetFind = true;
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// img.targetFindTolerance = 4;
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img.hasControls = img.hasBorders = false;
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img.scale(fabric.util.getRandomInt(50, 100) / 100);
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canvas.add(img);
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});
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}
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}
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function sample2() {
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let dot: fabric.Circle;
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let i: number;
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let t1: number;
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let t2: number;
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const startTimer = () => {
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t1 = new Date().getTime();
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return t1;
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};
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const stopTimer = () => {
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t2 = new Date().getTime();
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return t2 - t1;
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};
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const getRandomInt = fabric.util.getRandomInt;
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const rainbow = ["#ffcc66", "#ccff66", "#66ccff", "#ff6fcf", "#ff6666"];
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const rainbowEnd = rainbow.length - 1;
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//
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// Rendering canvas #1
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//
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const canvas1 = new fabric.Canvas('c1', { backgroundColor: "#000" });
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const results1 = document.getElementById('results-c1');
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startTimer();
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for (i = 100; i >= 0; i--) {
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dot = new fabric.Circle({
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left: getRandomInt(0, 400),
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top: getRandomInt(0, 350),
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radius: 3,
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fill: rainbow[getRandomInt(0, rainbowEnd)]
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});
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canvas1.add(dot);
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}
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results1.innerHTML = `Regular rendering of 100 elements in ${stopTimer()}ms`;
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//
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// Rendering canvas #2
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//
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const canvas2 = new fabric.Canvas('c2', { backgroundColor: "#000", renderOnAddRemove: false });
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const results2 = document.getElementById('results-c2');
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startTimer();
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for (i = 1000; i >= 0; i--) {
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dot = new fabric.Circle({
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left: getRandomInt(0, 400),
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top: getRandomInt(0, 350),
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radius: 3,
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fill: rainbow[getRandomInt(0, rainbowEnd)]
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});
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canvas2.add(dot);
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}
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canvas2.renderAll(); // Note, calling renderAll() is important in this case
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results2.innerHTML = `Rendering 1000 elements using canvas.renderOnAddRemove = false in ${stopTimer()}ms`;
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}
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function sample3() {
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const $: (id: string) => HTMLElement = (id: string) => document.getElementById(id);
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function applyFilter(index: number, filter: any) {
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const obj: fabric.Image = <fabric.Image> canvas.getActiveObject();
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obj.filters[index] = filter;
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obj.applyFilters(canvas.renderAll.bind(canvas));
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}
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function applyFilterValue(index: number, prop: string, value: any) {
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const obj: fabric.Image = <fabric.Image> canvas.getActiveObject();
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if (obj.filters[index]) {
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obj.applyFilters(canvas.renderAll.bind(canvas));
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}
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}
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const canvas = new fabric.Canvas('c', { backgroundImage: '../lib/bg.png' });
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const f = fabric.Image.filters;
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canvas.on({
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'object:selected': () => {
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fabric.util.toArray(document.getElementsByTagName('input')).forEach(el => { el.disabled = false; });
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const filters = ['grayscale', 'invert', 'remove-white', 'sepia', 'sepia2', 'brightness',
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'noise', 'gradient-transparency', 'pixelate', 'blur', 'sharpen'];
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for (let i = 0; i < filters.length; i++) {
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const checkBox = <HTMLInputElement> $(filters[i]);
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const image = <fabric.Image> canvas.getActiveObject();
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checkBox.checked = !!image.filters[i];
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}
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},
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'selection:cleared': () => {
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fabric.util.toArray(document.getElementsByTagName('input')).forEach(el => { el.disabled = true; });
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}
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});
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const image = fabric.Image.fromURL('../assets/printio.png', img => {
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const oImg = img.set({ left: 300, top: 300, angle: -15 }).scale(0.9);
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canvas.add(oImg).renderAll();
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canvas.setActiveObject(oImg);
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});
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image.setSrc('../assets/printio.png');
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$('grayscale').onclick = function(this: HTMLInputElement) {
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applyFilter(0, this.checked && new f.Grayscale());
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};
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$('invert').onclick = function(this: HTMLInputElement) {
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applyFilter(1, this.checked && new f.Invert());
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};
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$('remove-white').onclick = function(this: HTMLInputElement) {
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applyFilter(2, this.checked && new f.RemoveWhite({
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threshold: parseInt((<HTMLInputElement> $('remove-white-threshold')).value, 10),
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distance: parseInt((<HTMLInputElement> $('remove-white-distance')).value, 10)
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}));
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};
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$('remove-white-threshold').onchange = function(this: HTMLInputElement) {
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applyFilterValue(2, 'threshold', this.value);
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};
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$('remove-white-distance').onchange = function(this: HTMLInputElement) {
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applyFilterValue(2, 'distance', this.value);
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};
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$('sepia').onclick = function(this: HTMLInputElement) {
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applyFilter(3, this.checked && new f.Sepia());
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};
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$('sepia2').onclick = function(this: HTMLInputElement) {
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applyFilter(4, this.checked && new f.Sepia2());
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};
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$('brightness').onclick = function(this: HTMLInputElement) {
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applyFilter(5, this.checked && new f.Brightness({
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brightness: parseInt((<HTMLInputElement> $('brightness-value')).value, 10)
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}));
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};
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$('brightness-value').onchange = function(this: HTMLInputElement) {
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applyFilterValue(5, 'brightness', parseInt(this.value, 10));
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};
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$('noise').onclick = function(this: HTMLInputElement) {
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applyFilter(6, this.checked && new f.Noise({
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noise: parseInt((<HTMLInputElement> $('noise-value')).value, 10)
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}));
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};
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$('noise-value').onchange = function(this: HTMLInputElement) {
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applyFilterValue(6, 'noise', parseInt(this.value, 10));
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};
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$('gradient-transparency').onclick = function(this: HTMLInputElement) {
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applyFilter(7, this.checked && new f.GradientTransparency({
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threshold: parseInt((<HTMLInputElement> $('gradient-transparency-value')).value, 10)
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}));
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};
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$('gradient-transparency-value').onchange = function(this: HTMLInputElement) {
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applyFilterValue(7, 'threshold', parseInt(this.value, 10));
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};
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$('pixelate').onclick = function(this: HTMLInputElement) {
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applyFilter(8, this.checked && new f.Pixelate({
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blocksize: parseInt((<HTMLInputElement> $('pixelate-value')).value, 10)
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}));
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};
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$('pixelate-value').onchange = function(this: HTMLInputElement) {
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applyFilterValue(8, 'blocksize', parseInt(this.value, 10));
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};
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$('blur').onclick = function(this: HTMLInputElement) {
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applyFilter(9, this.checked && new f.Convolute({
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matrix: [1 / 9, 1 / 9, 1 / 9,
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1 / 9, 1 / 9, 1 / 9,
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1 / 9, 1 / 9, 1 / 9]
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}));
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};
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$('sharpen').onclick = function(this: HTMLInputElement) {
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applyFilter(10, this.checked && new f.Convolute({
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matrix: [0, -1, 0,
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-1, 5, -1,
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0, -1, 0]
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}));
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};
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$('emboss').onclick = function(this: HTMLInputElement) {
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applyFilter(11, this.checked && new f.Convolute({
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matrix: [1, 1, 1,
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1, 0.7, -1,
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-1, -1, -1]
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}));
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};
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}
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function sample4() {
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const canvas = new fabric.Canvas('c');
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const $: (id: string) => HTMLElement = id => document.getElementById(id);
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const rect = new fabric.Rect({
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width: 100,
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height: 100,
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top: 150,
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left: 150,
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fill: 'rgba(255,0,0,0.5)'
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});
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canvas.add(rect);
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const angleControl = <HTMLInputElement> $('angle-control');
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angleControl.onchange = function(this: HTMLInputElement) {
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rect.setAngle(+this.value).setCoords();
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canvas.renderAll();
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};
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const scaleControl = <HTMLInputElement> $('scale-control');
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scaleControl.onchange = function(this: HTMLInputElement) {
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rect.scale(+this.value).setCoords();
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canvas.renderAll();
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};
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const topControl = <HTMLInputElement> $('top-control');
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topControl.onchange = function(this: HTMLInputElement) {
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rect.setTop(+this.value).setCoords();
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canvas.renderAll();
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};
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const leftControl = <HTMLInputElement> $('left-control');
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leftControl.onchange = function(this: HTMLInputElement) {
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rect.setLeft(+this.value).setCoords();
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canvas.renderAll();
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};
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function updateControls() {
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scaleControl.value = rect.getScaleX().toString();
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angleControl.value = rect.getAngle().toString();
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leftControl.value = rect.getLeft().toString();
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topControl.value = rect.getTop().toString();
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}
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canvas.on({
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'object:moving': updateControls,
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'object:scaling': updateControls,
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'object:resizing': updateControls
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});
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}
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interface CircleWithLineInfos extends fabric.Circle {
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line1?: fabric.Line;
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line2?: fabric.Line;
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line3?: fabric.Line;
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line4?: fabric.Line;
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}
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function sample5() {
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const makeCircle = (left: number, top: number, line1?: fabric.Line, line2?: fabric.Line, line3?: fabric.Line, line4?: fabric.Line): fabric.Circle => {
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const c = <CircleWithLineInfos> new fabric.Circle({
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left,
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top,
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strokeWidth: 5,
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radius: 12,
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fill: '#fff',
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stroke: '#666'
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});
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c.line1 = line1;
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c.line2 = line2;
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c.line3 = line3;
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c.line4 = line4;
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c.hasControls = c.hasBorders = false;
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return c;
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};
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function makeLine(coords: number[]) {
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return new fabric.Line(coords, {
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fill: 'red',
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strokeWidth: 5,
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selectable: false
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});
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}
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const canvas = new fabric.Canvas('c', { selection: false });
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const line = makeLine([250, 125, 250, 175]);
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const line2 = makeLine([250, 175, 250, 250]);
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const line3 = makeLine([250, 250, 300, 350]);
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const line4 = makeLine([250, 250, 200, 350]);
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const line5 = makeLine([250, 175, 175, 225]);
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const line6 = makeLine([250, 175, 325, 225]);
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canvas.add(line, line2, line3, line4, line5, line6);
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canvas.add(
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makeCircle(line.x1, line.y1, null, line),
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makeCircle(line.x2, line.y2, line, line2, line5, line6),
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makeCircle(line2.x2, line2.y2, line2, line3, line4),
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makeCircle(line3.x2, line3.y2, line3),
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makeCircle(line4.x2, line4.y2, line4),
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makeCircle(line5.x2, line5.y2, line5),
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makeCircle(line6.x2, line6.y2, line6)
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);
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canvas.on('object:moving', e => {
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const p = <CircleWithLineInfos> e.target;
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p.line1 && p.line1.set({ x2: p.left, y2: p.top });
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p.line2 && p.line2.set({ x1: p.left, y1: p.top });
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p.line3 && p.line3.set({ x1: p.left, y1: p.top });
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p.line4 && p.line4.set({ x1: p.left, y1: p.top });
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canvas.renderAll();
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});
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}
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function sample6() {
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const canvas = new fabric.Canvas('c');
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fabric.loadSVGFromURL('../assets/135.svg', objects => {
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const obj = objects[0].scale(0.25);
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canvas.centerObject(obj);
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canvas.add(obj);
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canvas.add(obj.clone(() => { }).set({ left: 100, top: 100, angle: -15 }));
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canvas.add(obj.clone(() => { }).set({ left: 480, top: 100, angle: 15 }));
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canvas.add(obj.clone(() => { }).set({ left: 100, top: 400, angle: -15 }));
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canvas.add(obj.clone(() => { }).set({ left: 480, top: 400, angle: 15 }));
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canvas.on('mouse:move', options => {
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const p = canvas.getPointer(options.e);
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canvas.forEachObject(obj => {
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const distX = Math.abs(p.x - obj.left);
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const distY = Math.abs(p.y - obj.top);
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const dist = Math.round(Math.sqrt(Math.pow(distX, 2) + Math.pow(distY, 2)));
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obj.setOpacity(1 / (dist / 20));
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});
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});
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});
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}
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interface ImageWithInfo extends fabric.Image {
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movingLeft: boolean;
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}
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function sample7() {
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const canvas = new fabric.Canvas('c', { selection: false });
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setInterval(() => {
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fabric.Image.fromURL('../assets/ladybug.png', obj => {
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const img = <ImageWithInfo> obj;
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img.set('left', fabric.util.getRandomInt(200, 600)).set('top', -50);
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img.movingLeft = !!Math.round(Math.random());
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canvas.add(img);
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});
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}, 1000);
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const animate = (function animate() {
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canvas.forEachObject(obj => {
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const img = <ImageWithInfo> obj;
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img.left += (img.movingLeft ? -1 : 1);
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img.top += 1;
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if (img.left > 900 || img.top > 500) {
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canvas.remove(img);
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} else {
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img.setAngle(img.getAngle() + 2);
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}
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});
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canvas.renderAll();
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window.requestAnimationFrame(animate);
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});
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animate();
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}
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function sample8() {
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function pad(str: string, length: number): string {
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while (str.length < length) {
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str = '0' + str;
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}
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return str;
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}
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const getRandomInt = fabric.util.getRandomInt;
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function getRandomColor() {
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return (
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pad(getRandomInt(0, 255).toString(16), 2) +
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pad(getRandomInt(0, 255).toString(16), 2) +
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pad(getRandomInt(0, 255).toString(16), 2)
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);
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}
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function getRandomNum(min: number, max: number): number {
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return Math.random() * (max - min) + min;
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}
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if (/(iPhone|iPod|iPad)/i.test(navigator.userAgent)) {
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(fabric.Object.prototype as any).cornersize = 30;
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}
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const canvas = new fabric.Canvas('canvas');
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// canvas.controlsAboveOverlay = true;
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function updateComplexity() {
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setTimeout(() => {
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const element = <HTMLElement> document.getElementById('complexity').childNodes[1];
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element.innerHTML = ' ' + canvas.complexity();
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}, 100);
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}
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document.getElementById('commands').onclick = (ev: any) => {
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ev = ev || window.event;
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if (ev.preventDefault) {
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ev.preventDefault();
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} else if (ev.returnValue) {
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ev.returnValue = false;
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}
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let element: any = ev.target || ev.srcElement;
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if (element.nodeName.toLowerCase() === 'strong') {
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element = element.parentNode;
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}
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const className = element.className;
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const offset = 50;
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const left = fabric.util.getRandomInt(0 + offset, 700 - offset);
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const top = fabric.util.getRandomInt(0 + offset, 500 - offset);
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const angle = fabric.util.getRandomInt(-20, 40);
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const width = fabric.util.getRandomInt(30, 50);
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const opacity = ((min: number, max: number) => Math.random() * (max - min) + min)(0.5, 1);
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switch (className) {
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case 'rect':
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canvas.add(new fabric.Rect({
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left,
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top,
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fill: '#' + getRandomColor(),
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width: 50,
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height: 50,
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opacity: 0.8
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}));
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break;
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case 'circle':
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canvas.add(new fabric.Circle({
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left,
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top,
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fill: '#' + getRandomColor(),
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radius: 50,
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opacity: 0.8
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}));
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break;
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case 'triangle':
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canvas.add(new fabric.Triangle({
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left,
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top,
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fill: '#' + getRandomColor(),
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width: 50,
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height: 50,
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opacity: 0.8
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}));
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break;
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case 'image1':
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fabric.Image.fromURL('../assets/pug.jpg', image => {
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image.set({
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left,
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top,
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angle,
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padding: 10,
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cornersize: 10
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});
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image.scale(getRandomNum(0.1, 0.25)).setCoords();
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canvas.add(image);
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});
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break;
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case 'image2':
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fabric.Image.fromURL('../assets/logo.png', image => {
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image.set({
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left,
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top,
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angle,
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padding: 10,
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cornersize: 10
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});
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image.scale(getRandomNum(0.1, 1)).setCoords();
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canvas.add(image);
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updateComplexity();
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});
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break;
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case 'shape':
|
|
const id: any = element.id;
|
|
const match = /\d+$/.exec(id);
|
|
if (match) {
|
|
fabric.loadSVGFromURL(`../assets/${match[0]}.svg`, (objects, options) => {
|
|
const loadedObject = fabric.util.groupSVGElements(objects, options);
|
|
|
|
loadedObject.set({
|
|
left,
|
|
top,
|
|
angle,
|
|
padding: 10,
|
|
cornersize: 10
|
|
});
|
|
loadedObject/*.scaleToWidth(300)*/.setCoords();
|
|
|
|
// loadedObject.hasRotatingPoint = true;
|
|
|
|
canvas.add(loadedObject);
|
|
updateComplexity();
|
|
canvas.calcOffset();
|
|
});
|
|
}
|
|
break;
|
|
|
|
case 'clear':
|
|
if (confirm('Are you sure?')) {
|
|
canvas.clear();
|
|
}
|
|
}
|
|
updateComplexity();
|
|
};
|
|
|
|
document.getElementById('execute').onclick = () => {
|
|
const code = (<HTMLInputElement> document.getElementById('canvas-console')).value;
|
|
if (!(/^\s+$/).test(code)) {
|
|
eval(code); // tslint:disable-line:no-eval
|
|
}
|
|
};
|
|
|
|
document.getElementById('rasterize').onclick = () => {
|
|
if (!fabric.Canvas.supports('toDataURL')) {
|
|
alert('This browser doesn\'t provide means to serialize canvas to an image');
|
|
} else {
|
|
window.open(canvas.toDataURL({ format: 'png' }));
|
|
}
|
|
};
|
|
|
|
const removeSelectedEl = document.getElementById('remove-selected');
|
|
removeSelectedEl.onclick = () => {
|
|
const activeObject = canvas.getActiveObject();
|
|
const activeGroup = canvas.getActiveGroup();
|
|
if (activeObject) {
|
|
canvas.remove(activeObject);
|
|
} else if (activeGroup) {
|
|
const objectsInGroup = activeGroup.getObjects();
|
|
canvas.discardActiveGroup();
|
|
objectsInGroup.forEach(object => {
|
|
canvas.remove(object);
|
|
});
|
|
}
|
|
};
|
|
|
|
const supportsInputOfType = (type: string) => {
|
|
return () => {
|
|
const el = document.createElement('input');
|
|
try {
|
|
el.type = type;
|
|
} catch (err) { }
|
|
return el.type === type;
|
|
};
|
|
};
|
|
|
|
const supportsSlider = supportsInputOfType('range');
|
|
const supportsColorpicker = supportsInputOfType('color');
|
|
|
|
if (supportsSlider()) {
|
|
(() => {
|
|
const controls = document.getElementById('controls');
|
|
|
|
const sliderLabel = document.createElement('label');
|
|
sliderLabel.htmlFor = 'opacity';
|
|
sliderLabel.innerHTML = 'Opacity: ';
|
|
|
|
const slider = document.createElement('input');
|
|
|
|
try { slider.type = 'range'; } catch (err) { }
|
|
|
|
slider.id = 'opacity';
|
|
slider.value = "100";
|
|
|
|
controls.appendChild(sliderLabel);
|
|
controls.appendChild(slider);
|
|
|
|
canvas.calcOffset();
|
|
|
|
slider.onchange = function() {
|
|
const activeObject = canvas.getActiveObject();
|
|
const activeGroup = canvas.getActiveGroup();
|
|
|
|
if (activeObject || activeGroup) {
|
|
(activeObject || activeGroup).setOpacity(parseInt((<HTMLInputElement> this).value, 10) / 100);
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
})();
|
|
}
|
|
|
|
if (supportsColorpicker()) {
|
|
(() => {
|
|
const controls = document.getElementById('controls');
|
|
|
|
const label = document.createElement('label');
|
|
label.htmlFor = 'color';
|
|
label.innerHTML = 'Color: ';
|
|
label.style.marginLeft = '10px';
|
|
|
|
const colorpicker = document.createElement('input');
|
|
colorpicker.type = 'color';
|
|
colorpicker.id = 'color';
|
|
colorpicker.style.width = '40px';
|
|
|
|
controls.appendChild(label);
|
|
controls.appendChild(colorpicker);
|
|
|
|
canvas.calcOffset();
|
|
|
|
colorpicker.onchange = function() {
|
|
const activeObject = canvas.getActiveObject();
|
|
const activeGroup = canvas.getActiveGroup();
|
|
|
|
if (activeObject || activeGroup) {
|
|
(activeObject || activeGroup).setFill((<HTMLInputElement> this).value);
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
})();
|
|
}
|
|
|
|
const lockHorizontallyEl = document.getElementById('lock-horizontally');
|
|
lockHorizontallyEl.onclick = () => {
|
|
const activeObject: any = canvas.getActiveObject();
|
|
if (activeObject) {
|
|
activeObject.lockMovementX = !activeObject.lockMovementX;
|
|
lockHorizontallyEl.innerHTML = activeObject.lockMovementX
|
|
? 'Unlock horizontal movement'
|
|
: 'Lock horizontal movement';
|
|
}
|
|
};
|
|
|
|
const lockVerticallyEl = document.getElementById('lock-vertically');
|
|
lockVerticallyEl.onclick = () => {
|
|
const activeObject: any = canvas.getActiveObject();
|
|
if (activeObject) {
|
|
activeObject.lockMovementY = !activeObject.lockMovementY;
|
|
lockVerticallyEl.innerHTML = activeObject.lockMovementY
|
|
? 'Unlock vertical movement'
|
|
: 'Lock vertical movement';
|
|
}
|
|
};
|
|
|
|
const lockScalingXEl = document.getElementById('lock-scaling-x');
|
|
lockScalingXEl.onclick = () => {
|
|
const activeObject: any = canvas.getActiveObject();
|
|
if (activeObject) {
|
|
activeObject.lockScalingX = !activeObject.lockScalingX;
|
|
lockScalingXEl.innerHTML = activeObject.lockScalingX
|
|
? 'Unlock horizontal scaling'
|
|
: 'Lock horizontal scaling';
|
|
}
|
|
};
|
|
|
|
const lockScalingYEl = document.getElementById('lock-scaling-y');
|
|
lockScalingYEl.onclick = () => {
|
|
const activeObject: any = canvas.getActiveObject();
|
|
if (activeObject) {
|
|
activeObject.lockScalingY = !activeObject.lockScalingY;
|
|
lockScalingYEl.innerHTML = activeObject.lockScalingY
|
|
? 'Unlock vertical scaling'
|
|
: 'Lock vertical scaling';
|
|
}
|
|
};
|
|
|
|
const lockRotationEl = document.getElementById('lock-rotation');
|
|
lockRotationEl.onclick = () => {
|
|
const activeObject: any = canvas.getActiveObject();
|
|
if (activeObject) {
|
|
activeObject.lockRotation = !activeObject.lockRotation;
|
|
lockRotationEl.innerHTML = activeObject.lockRotation
|
|
? 'Unlock rotation'
|
|
: 'Lock rotation';
|
|
}
|
|
};
|
|
|
|
const gradientifyBtn = document.getElementById('gradientify');
|
|
|
|
const activeObjectButtons = [
|
|
lockHorizontallyEl,
|
|
lockVerticallyEl,
|
|
lockScalingXEl,
|
|
lockScalingYEl,
|
|
lockRotationEl,
|
|
removeSelectedEl,
|
|
gradientifyBtn
|
|
];
|
|
|
|
const opacityEl = document.getElementById('opacity');
|
|
if (opacityEl) {
|
|
activeObjectButtons.push(opacityEl);
|
|
}
|
|
const colorEl = document.getElementById('color');
|
|
if (colorEl) {
|
|
activeObjectButtons.push(colorEl);
|
|
}
|
|
|
|
for (let i = activeObjectButtons.length; i--; ) {
|
|
activeObjectButtons[i];
|
|
}
|
|
|
|
canvas.on('object:selected', onObjectSelected);
|
|
canvas.on('group:selected', onObjectSelected);
|
|
|
|
function onObjectSelected(e: fabric.IEvent) {
|
|
const selectedObject = e.target;
|
|
|
|
for (let i = activeObjectButtons.length; i--; ) {
|
|
activeObjectButtons[i];
|
|
}
|
|
|
|
lockHorizontallyEl.innerHTML = (selectedObject.lockMovementX ? 'Unlock horizontal movement' : 'Lock horizontal movement');
|
|
lockVerticallyEl.innerHTML = (selectedObject.lockMovementY ? 'Unlock vertical movement' : 'Lock vertical movement');
|
|
lockScalingXEl.innerHTML = (selectedObject.lockScalingX ? 'Unlock horizontal scaling' : 'Lock horizontal scaling');
|
|
lockScalingYEl.innerHTML = (selectedObject.lockScalingY ? 'Unlock vertical scaling' : 'Lock vertical scaling');
|
|
lockRotationEl.innerHTML = (selectedObject.lockRotation ? 'Unlock rotation' : 'Lock rotation');
|
|
}
|
|
|
|
canvas.on('selection:cleared', e => {
|
|
for (let i = activeObjectButtons.length; i--; ) {
|
|
activeObjectButtons[i];
|
|
}
|
|
});
|
|
|
|
const drawingModeEl = document.getElementById('drawing-mode');
|
|
const drawingOptionsEl = document.getElementById('drawing-mode-options');
|
|
const drawingColorEl = <HTMLInputElement> document.getElementById('drawing-color');
|
|
const drawingLineWidthEl = <HTMLInputElement> document.getElementById('drawing-line-width');
|
|
|
|
drawingModeEl.onclick = () => {
|
|
const canvasWithDrawingMode: any = canvas;
|
|
canvasWithDrawingMode.isDrawingMode = !canvasWithDrawingMode.isDrawingMode;
|
|
if (canvasWithDrawingMode.isDrawingMode) {
|
|
drawingModeEl.innerHTML = 'Cancel drawing mode';
|
|
drawingModeEl.className = 'is-drawing';
|
|
drawingOptionsEl.style.display = '';
|
|
} else {
|
|
drawingModeEl.innerHTML = 'Enter drawing mode';
|
|
drawingModeEl.className = '';
|
|
drawingOptionsEl.style.display = 'none';
|
|
}
|
|
};
|
|
|
|
canvas.on('path:created', () => {
|
|
updateComplexity();
|
|
});
|
|
|
|
drawingColorEl.onchange = () => {
|
|
canvas.freeDrawingColor = drawingColorEl.value;
|
|
};
|
|
drawingLineWidthEl.onchange = () => {
|
|
canvas.freeDrawingLineWidth = parseInt(drawingLineWidthEl.value, 10) || 1; // disallow 0, NaN, etc.
|
|
};
|
|
|
|
canvas.freeDrawingColor = drawingColorEl.value;
|
|
canvas.freeDrawingLineWidth = parseInt(drawingLineWidthEl.value, 10) || 1;
|
|
|
|
const text = `Lorem ipsum dolor sit amet,
|
|
consectetur adipisicing elit,
|
|
sed do eiusmod tempor incididunt
|
|
ut labore et dolore magna aliqua.
|
|
Ut enim ad minim veniam,
|
|
quis nostrud exercitation ullamco
|
|
laboris nisi ut aliquip ex ea commodo consequat.`;
|
|
|
|
document.getElementById('add-text').onclick = () => {
|
|
const textSample = new fabric.Text(text.slice(0, getRandomInt(0, text.length)), {
|
|
left: getRandomInt(350, 400),
|
|
top: getRandomInt(350, 400),
|
|
fontFamily: 'helvetica',
|
|
angle: getRandomInt(-10, 10),
|
|
fill: '#' + getRandomColor(),
|
|
scaleX: 0.5,
|
|
scaleY: 0.5,
|
|
fontWeight: ''
|
|
});
|
|
canvas.add(textSample);
|
|
updateComplexity();
|
|
};
|
|
|
|
document.onkeydown = e => {
|
|
const obj = canvas.getActiveObject() || canvas.getActiveGroup();
|
|
if (obj && e.keyCode === 8) {
|
|
// this is horrible. need to fix, so that unified interface can be used
|
|
if (obj.type === 'group') {
|
|
// const groupObjects = obj.getObjects();
|
|
// canvas.discardActiveGroup();
|
|
// groupObjects.forEach(function(obj) {
|
|
// canvas.remove(obj);
|
|
// });
|
|
} else {
|
|
// canvas.remove(obj);
|
|
}
|
|
canvas.renderAll();
|
|
// return false;
|
|
}
|
|
};
|
|
|
|
setTimeout(() => {
|
|
canvas.calcOffset();
|
|
}, 100);
|
|
|
|
if (document.location.search.indexOf('guidelines') > -1) {
|
|
// initCenteringGuidelines(canvas);
|
|
// initAligningGuidelines(canvas);
|
|
}
|
|
|
|
gradientifyBtn.onclick = () => {
|
|
const obj = canvas.getActiveObject();
|
|
if (obj) {
|
|
obj.setGradient("fill", {
|
|
x2: (getRandomInt(0, 1) ? 0 : obj.width),
|
|
y2: (getRandomInt(0, 1) ? 0 : obj.height),
|
|
colorStops: {
|
|
0: '#' + getRandomColor(),
|
|
1: '#' + getRandomColor()
|
|
}
|
|
});
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
|
|
const textEl = <HTMLInputElement> document.getElementById('text');
|
|
if (textEl) {
|
|
textEl.onfocus = function() {
|
|
const activeObject = canvas.getActiveObject();
|
|
|
|
if (activeObject && activeObject.type === 'text') {
|
|
(<HTMLInputElement> this).value = (<fabric.Text> activeObject).text;
|
|
}
|
|
};
|
|
textEl.onkeyup = function(e) {
|
|
const activeObject = canvas.getActiveObject();
|
|
if (activeObject) {
|
|
if (!(<HTMLInputElement> this).value) {
|
|
canvas.discardActiveObject();
|
|
} else {
|
|
(<fabric.Text> activeObject).text = (<HTMLInputElement> this).value;
|
|
}
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const cmdUnderlineBtn = document.getElementById('text-cmd-underline');
|
|
if (cmdUnderlineBtn) {
|
|
activeObjectButtons.push(cmdUnderlineBtn);
|
|
cmdUnderlineBtn.onclick = function() {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.textDecoration = (activeObject.textDecoration === 'underline' ? '' : 'underline');
|
|
this.className = activeObject.textDecoration ? 'selected' : '';
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const cmdLinethroughBtn = document.getElementById('text-cmd-linethrough');
|
|
if (cmdLinethroughBtn) {
|
|
activeObjectButtons.push(cmdLinethroughBtn);
|
|
cmdLinethroughBtn.onclick = function() {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.textDecoration = (activeObject.textDecoration === 'line-through' ? '' : 'line-through');
|
|
this.className = activeObject.textDecoration ? 'selected' : '';
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const cmdOverlineBtn = document.getElementById('text-cmd-overline');
|
|
if (cmdOverlineBtn) {
|
|
activeObjectButtons.push(cmdOverlineBtn);
|
|
cmdOverlineBtn.onclick = function() {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.textDecoration = (activeObject.textDecoration === 'overline' ? '' : 'overline');
|
|
this.className = activeObject.textDecoration ? 'selected' : '';
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const cmdBoldBtn = document.getElementById('text-cmd-bold');
|
|
if (cmdBoldBtn) {
|
|
activeObjectButtons.push(cmdBoldBtn);
|
|
cmdBoldBtn.onclick = function() {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.fontWeight = (activeObject.fontWeight === 'bold' ? '' : 'bold');
|
|
this.className = activeObject.fontWeight ? 'selected' : '';
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const cmdItalicBtn = document.getElementById('text-cmd-italic');
|
|
if (cmdItalicBtn) {
|
|
activeObjectButtons.push(cmdItalicBtn);
|
|
cmdItalicBtn.onclick = function() {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.fontStyle = (activeObject.fontStyle === 'italic' ? '' : 'italic');
|
|
this.className = activeObject.fontStyle ? 'selected' : '';
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const cmdShadowBtn = document.getElementById('text-cmd-shadow');
|
|
if (cmdShadowBtn) {
|
|
activeObjectButtons.push(cmdShadowBtn);
|
|
cmdShadowBtn.onclick = function() {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.shadow = !activeObject.shadow ? 'rgba(0,0,0,0.2) 2px 2px 10px' : '';
|
|
this.className = activeObject.shadow ? 'selected' : '';
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const textAlignSwitch = document.getElementById('text-align');
|
|
if (textAlignSwitch) {
|
|
activeObjectButtons.push(textAlignSwitch);
|
|
textAlignSwitch.onchange = function(this: HTMLInputElement) {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.textAlign = this.value.toLowerCase();
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const fontFamilySwitch = document.getElementById('font-family');
|
|
if (fontFamilySwitch) {
|
|
activeObjectButtons.push(fontFamilySwitch);
|
|
fontFamilySwitch.onchange = function(this: HTMLInputElement) {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.fontFamily = this.value;
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const bgColorField = document.getElementById('text-bg-color');
|
|
if (bgColorField) {
|
|
bgColorField.onchange = function(this: HTMLInputElement) {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.backgroundColor = this.value;
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
const strokeColorField = document.getElementById('text-stroke-color');
|
|
if (strokeColorField) {
|
|
strokeColorField.onchange = function(this: HTMLInputElement) {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.stroke = this.value;
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
}
|
|
|
|
if (supportsSlider) {
|
|
(() => {
|
|
const container = document.getElementById('text-controls');
|
|
const slider = document.createElement('input');
|
|
const label = document.createElement('label');
|
|
label.innerHTML = 'Line height: ';
|
|
try { slider.type = 'range'; } catch (err) { }
|
|
slider.min = "0";
|
|
slider.max = "10";
|
|
slider.step = "0.1";
|
|
slider.value = "1.5";
|
|
container.appendChild(label);
|
|
label.appendChild(slider);
|
|
slider.title = "Line height";
|
|
slider.onchange = function() {
|
|
const activeObject = <fabric.Text> canvas.getActiveObject();
|
|
if (activeObject && activeObject.type === 'text') {
|
|
activeObject.lineHeight = +(<HTMLInputElement> this).value;
|
|
canvas.renderAll();
|
|
}
|
|
};
|
|
|
|
canvas.on('object:selected', (e: fabric.IEvent) => {
|
|
slider.value = String((<fabric.Text> e.target).lineHeight);
|
|
});
|
|
})();
|
|
}
|
|
|
|
document.getElementById('load-svg').onclick = () => {
|
|
const svg = (<HTMLInputElement> document.getElementById('svg-console')).value;
|
|
fabric.loadSVGFromString(svg, (objects, options) => {
|
|
const obj = fabric.util.groupSVGElements(objects, options);
|
|
canvas.add(obj).centerObject(obj).renderAll();
|
|
obj.setCoords();
|
|
});
|
|
};
|
|
}
|
|
|
|
function sample9() {
|
|
const canvas = new fabric.Canvas('c');
|
|
canvas.setBackgroundImage('yolo.jpg', () => { "a"; }, { opacity: 45 });
|
|
canvas.setBackgroundImage('yolo.jpg', () => { "a"; });
|
|
}
|