Implemented eraser tool. Must move and resize layers at the same time.
Signed-off-by: npalomba <nicola.palomba@studenti.galileilivorno.gov.it>
This commit is contained in:
npalomba
parent
42a8ce3c4a
commit
a9d380ec1d
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@ -21,9 +21,9 @@ Suggestions / Planned features:
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- Selections
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- New selection tool
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- New canvas layer above the drawing layer
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- New currentLayer.canvas layer above the drawing layer
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- Move when click and drag
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- Merge with canvas when click outside
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- Merge with currentLayer.canvas when click outside
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- Copy/paste
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- Add as selection
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@ -35,7 +35,7 @@ Suggestions / Planned features:
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- Palette option remove unused colors
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- Pixel Grid
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- Another canvas
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- Another currentLayer.canvas
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- Must be rescaled each zoom
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- Possibly add collaborate function using together.js
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@ -54,11 +54,11 @@ canvas {
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}
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#checkerboard {
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z-index:1000;
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z-index:1;
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}
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#pixel-canvas {
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z-index:1;
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z-index:2;
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background:transparent;
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}
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@ -1,6 +1,7 @@
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function Canvas(width, height, canvas) {
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this.canvasSize = [width, height],
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this.canvas = canvas,
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this.context = canvas.getContext("2d"),
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this.initialize = function() {
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var maxHorizontalZoom = Math.floor(window.innerWidth/this.canvasSize[0]*0.75);
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var maxVerticalZoom = Math.floor(window.innerHeight/this.canvasSize[1]*0.75);
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@ -6,6 +6,8 @@ var nSquaresFilled = 0;
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*/
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function fillCheckerboard() {
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var context = checkerBoard.context;
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for (var i=0; i<canvasSize[0] / checkerBoardSquareSize; i++) {
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nSquaresFilled = 0;
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@ -9,7 +9,7 @@ function clickedColor (e){
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if (selectedColor) selectedColor.classList.remove("selected");
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//set current color
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context.fillStyle = this.style.backgroundColor;
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currentLayer.context.fillStyle = this.style.backgroundColor;
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//make color selected
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e.target.parentElement.classList.add('selected');
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@ -36,10 +36,10 @@ function createColorPalette(selectedPalette, fillBackground) {
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//fill bg with lightest color
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if (fillBackground) {
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context.fillStyle = lightestColor;
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context.fillRect(0, 0, canvasSize[0], canvasSize[1]);
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currentLayer.context.fillStyle = lightestColor;
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currentLayer.context.fillRect(0, 0, canvasSize[0], canvasSize[1]);
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}
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//set as current color
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context.fillStyle = darkestColor;
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currentLayer.context.fillStyle = darkestColor;
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}
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@ -73,7 +73,7 @@ function deleteColor (color) {
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//set current color TO LIGHTEST COLOR
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lightestColor[1].parentElement.classList.add('selected');
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context.fillStyle = '#'+lightestColor[1].jscolor.toString();
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currentLayer.context.fillStyle = '#'+lightestColor[1].jscolor.toString();
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}
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//delete the element
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@ -10,9 +10,9 @@ function line(x0,y0,x1,y1) {
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while (true) {
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//set pixel
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if (currentTool == 'pencil') {
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context.fillRect(x0-Math.floor(brushSize/2), y0-Math.floor(brushSize/2), brushSize, brushSize);
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currentLayer.context.fillRect(x0-Math.floor(brushSize/2), y0-Math.floor(brushSize/2), brushSize, brushSize);
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} else if (currentTool == 'eraser') {
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context.fillRect(x0-Math.floor(brushSize/2), y0-Math.floor(brushSize/2), brushSize, brushSize);
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currentLayer.context.clearRect(x0-Math.floor(brushSize/2), y0-Math.floor(brushSize/2), eraserSize, eraserSize);
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}
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//if we've reached the end goal, exit the loop
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@ -5,19 +5,19 @@ const undoLogStyle = 'background: #87ff1c; color: black; padding: 5px;';
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//prototype for undoing canvas changes
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function HistoryStateEditCanvas () {
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this.canvas = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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this.canvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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this.undo = function () {
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var currentCanvas = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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context.putImageData(this.canvas, 0, 0);
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var currentCanvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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currentLayer.context.putImageData(this.canvas, 0, 0);
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this.canvas = currentCanvas;
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redoStates.push(this);
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}
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this.redo = function () {
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var currentCanvas = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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context.putImageData(this.canvas, 0, 0);
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var currentCanvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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currentLayer.context.putImageData(this.canvas, 0, 0);
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this.canvas = currentCanvas;
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undoStates.push(this);
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@ -48,11 +48,11 @@ function HistoryStateAddColor (colorValue) {
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//prototype for undoing deleted colors
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function HistoryStateDeleteColor (colorValue) {
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this.colorValue = colorValue;
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this.canvas = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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this.canvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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this.undo = function () {
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var currentCanvas = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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context.putImageData(this.canvas, 0, 0);
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var currentCanvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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currentLayer.context.putImageData(this.canvas, 0, 0);
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addColor(this.colorValue);
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@ -61,8 +61,8 @@ function HistoryStateDeleteColor (colorValue) {
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}
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this.redo = function () {
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var currentCanvas = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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context.putImageData(this.canvas, 0, 0);
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var currentCanvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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currentLayer.context.putImageData(this.canvas, 0, 0);
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deleteColor(this.colorValue);
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@ -78,11 +78,11 @@ function HistoryStateDeleteColor (colorValue) {
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function HistoryStateEditColor (newColorValue, oldColorValue) {
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this.newColorValue = newColorValue;
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this.oldColorValue = oldColorValue;
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this.canvas = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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this.canvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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this.undo = function () {
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var currentCanvas = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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context.putImageData(this.canvas, 0, 0);
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var currentCanvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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currentLayer.context.putImageData(this.canvas, 0, 0);
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//find new color in palette and change it back to old color
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var colors = document.getElementsByClassName('color-button');
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@ -99,8 +99,8 @@ function HistoryStateEditColor (newColorValue, oldColorValue) {
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}
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this.redo = function () {
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var currentCanvas = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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context.putImageData(this.canvas, 0, 0);
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var currentCanvas = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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currentLayer.context.putImageData(this.canvas, 0, 0);
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//find old color in palette and change it back to new color
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var colors = document.getElementsByClassName('color-button');
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@ -547,7 +547,7 @@ var jsc = {
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//console.log(e.target,'=====================================')
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//if they clicked on the delete button [lospec]
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if (e.target.className == 'delete-color-button') {
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//saveHistoryState({type: 'deletecolor', colorValue: jsc.picker.owner.toString(), canvas: context.getImageData(0, 0, canvasSize[0], canvasSize[1])});
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//saveHistoryState({type: 'deletecolor', colorValue: jsc.picker.owner.toString(), canvas: currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1])});
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new HistoryStateDeleteColor(jsc.picker.owner.toString());
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deleteColor(jsc.picker.owner.styleElement);
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@ -784,15 +784,15 @@ var jsc = {
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// Canvas implementation for modern browsers
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var canvas = document.createElement('canvas');
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var ctx = canvas.getContext('2d');
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var ctx = currentLayer.canvas.getContext('2d');
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var drawFunc = function (width, height, type) {
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canvas.width = width;
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canvas.height = height;
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currentLayer.canvas.width = width;
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currentLayer.canvas.height = height;
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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ctx.clearRect(0, 0, currentLayer.canvas.width, currentLayer.canvas.height);
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var hGrad = ctx.createLinearGradient(0, 0, canvas.width, 0);
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var hGrad = ctx.createLinearGradient(0, 0, currentLayer.canvas.width, 0);
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hGrad.addColorStop(0 / 6, '#F00');
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hGrad.addColorStop(1 / 6, '#FF0');
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hGrad.addColorStop(2 / 6, '#0F0');
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@ -802,9 +802,9 @@ var jsc = {
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hGrad.addColorStop(6 / 6, '#F00');
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ctx.fillStyle = hGrad;
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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ctx.fillRect(0, 0, currentLayer.canvas.width, currentLayer.canvas.height);
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var vGrad = ctx.createLinearGradient(0, 0, 0, canvas.height);
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var vGrad = ctx.createLinearGradient(0, 0, 0, currentLayer.canvas.height);
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switch (type.toLowerCase()) {
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case 's':
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vGrad.addColorStop(0, 'rgba(255,255,255,0)');
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@ -816,7 +816,7 @@ var jsc = {
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break;
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}
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ctx.fillStyle = vGrad;
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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ctx.fillRect(0, 0, currentLayer.canvas.width, canvas.height);
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};
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paletteObj.elm = canvas;
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@ -15,10 +15,10 @@ document.getElementById('open-image-browse-holder').addEventListener('change', f
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newPixel(this.width, this.height, []);
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//draw the image onto the canvas
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context.drawImage(img, 0, 0);
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currentLayer.context.drawImage(img, 0, 0);
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var colorPalette = {};
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var imagePixelData = context.getImageData(0,0,this.width, this.height).data;
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var imagePixelData = currentLayer.context.getImageData(0,0,this.width, this.height).data;
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var imagePixelDataLength = imagePixelData.length;
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@ -17,7 +17,7 @@ window.addEventListener("mousedown", function (mouseEvent) {
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currentTool = 'pan';
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else if (mouseEvent.altKey)
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currentTool = 'eyedropper';
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else if (mouseEvent.target == canvas && (currentTool == 'pencil' || currentTool == 'eraser'))
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else if (mouseEvent.target == currentLayer.canvas && (currentTool == 'pencil' || currentTool == 'eraser'))
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new HistoryStateEditCanvas();
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//saveHistoryState({type: 'canvas', canvas: context.getImageData(0, 0, canvasSize[0], canvasSize[1])});
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@ -31,7 +31,7 @@ window.addEventListener("mousedown", function (mouseEvent) {
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}
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// TODO add eraser resize for scroll wheel
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if (currentTool == 'eyedropper' && mouseEvent.target == canvas)
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if (currentTool == 'eyedropper' && mouseEvent.target == currentLayer.canvas)
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eyedropperPreview.style.display = 'block';
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return false;
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@ -46,7 +46,7 @@ window.addEventListener("mouseup", function (mouseEvent) {
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if (!documentCreated || dialogueOpen) return;
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if (currentTool == 'eyedropper' && mouseEvent.target == canvas) {
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if (currentTool == 'eyedropper' && mouseEvent.target == currentLayer.canvas) {
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var cursorLocation = getCursorPosition(mouseEvent);
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var selectedColor = context.getImageData(Math.floor(cursorLocation[0]/zoom),Math.floor(cursorLocation[1]/zoom),1,1);
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var newColor = rgbToHex(selectedColor.data[0],selectedColor.data[1],selectedColor.data[2]);
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@ -78,10 +78,10 @@ window.addEventListener("mouseup", function (mouseEvent) {
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}
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else if (currentTool == 'fill' && mouseEvent.target == canvas) {
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else if (currentTool == 'fill' && mouseEvent.target == currentLayer.canvas) {
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console.log('filling')
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//if you clicked on anything but the canvas, do nothing
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if (!mouseEvent.target == canvas) return;
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if (!mouseEvent.target == currentLayer.canvas) return;
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//get cursor postion
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var cursorLocation = getCursorPosition(mouseEvent);
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@ -93,7 +93,7 @@ window.addEventListener("mouseup", function (mouseEvent) {
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//fill starting at the location
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fill(cursorLocation);
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}
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else if (currentTool == 'zoom' && mouseEvent.target == canvas) {
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else if (currentTool == 'zoom' && mouseEvent.target == currentLayer.canvas) {
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if (mouseEvent.which == 1) changeZoom('in', getCursorPosition(mouseEvent));
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else if (mouseEvent.which == 3) changeZoom('out', getCursorPosition(mouseEvent))
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}
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@ -121,18 +121,18 @@ function draw (mouseEvent) {
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if (currentTool == 'pencil') {
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//move the brush preview
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brushPreview.style.left = cursorLocation[0] + canvas.offsetLeft - brushSize * zoom / 2 + 'px';
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brushPreview.style.top = cursorLocation[1] + canvas.offsetTop - brushSize * zoom / 2 + 'px';
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brushPreview.style.left = cursorLocation[0] + currentLayer.canvas.offsetLeft - brushSize * zoom / 2 + 'px';
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brushPreview.style.top = cursorLocation[1] + currentLayer.canvas.offsetTop - brushSize * zoom / 2 + 'px';
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//hide brush preview outside of canvas / canvas view
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if (mouseEvent.target == canvas || mouseEvent.target == canvasView)
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if (mouseEvent.target == currentLayer.canvas || mouseEvent.target == canvasView)
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brushPreview.style.visibility = 'visible';
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else
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brushPreview.style.visibility = 'hidden';
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//draw line to current pixel
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if (dragging) {
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if (mouseEvent.target == canvas || mouseEvent.target == canvasView) {
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if (mouseEvent.target == currentLayer.canvas || mouseEvent.target == canvasView) {
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line(Math.floor(lastPos[0]/zoom),Math.floor(lastPos[1]/zoom),Math.floor(cursorLocation[0]/zoom),Math.floor(cursorLocation[1]/zoom));
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lastPos = cursorLocation;
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}
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@ -153,14 +153,14 @@ function draw (mouseEvent) {
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brushPreview.style.top = cursorLocation[1] + canvas.offsetTop - brushSize * zoom / 2 + 'px';
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//hide brush preview outside of canvas / canvas view
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if (mouseEvent.target == canvas || mouseEvent.target == canvasView)
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if (mouseEvent.target == currentLayer.canvas || mouseEvent.target == canvasView)
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brushPreview.style.visibility = 'visible';
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else
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brushPreview.style.visibility = 'hidden';
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//draw line to current pixel
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if (dragging) {
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if (mouseEvent.target == canvas || mouseEvent.target == canvasView) {
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if (mouseEvent.target == currentLayer.canvas || mouseEvent.target == canvasView) {
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line(Math.floor(lastPos[0]/zoom),Math.floor(lastPos[1]/zoom),Math.floor(cursorLocation[0]/zoom),Math.floor(cursorLocation[1]/zoom));
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lastPos = cursorLocation;
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}
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@ -169,30 +169,30 @@ function draw (mouseEvent) {
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else if (currentTool == 'pan' && dragging) {
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setCanvasOffset(canvas.offsetLeft + (cursorLocation[0] - lastPos[0]), canvas.offsetTop + (cursorLocation[1] - lastPos[1]))
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setCanvasOffset(currentLayer.canvas.offsetLeft + (cursorLocation[0] - lastPos[0]), currentLayer.canvas.offsetTop + (cursorLocation[1] - lastPos[1]))
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/*
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if (
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//right
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canvas.offsetLeft + (cursorLocation[0] - lastPos[0]) < window.innerWidth - canvasSize[0]*zoom*0.25 - 48 &&
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currentLayer.canvas.offsetLeft + (cursorLocation[0] - lastPos[0]) < window.innerWidth - currentLayer.canvasSize[0]*zoom*0.25 - 48 &&
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//left
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canvas.offsetLeft + (cursorLocation[0] - lastPos[0]) > -canvasSize[0]*zoom*0.75 + 64)
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currentLayer.canvas.offsetLeft + (cursorLocation[0] - lastPos[0]) > -canvasSize[0]*zoom*0.75 + 64)
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canvas.style.left = canvas.offsetLeft + (cursorLocation[0] - lastPos[0]) +'px';
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if (
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//bottom
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canvas.offsetTop + (cursorLocation[1] - lastPos[1]) < window.innerHeight-canvasSize[1]*zoom*0.25 &&
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//top
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canvas.offsetTop + (cursorLocation[1] - lastPos[1]) > -canvasSize[0]*zoom*0.75 + 48)
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canvas.style.top = canvas.offsetTop + (cursorLocation[1] - lastPos[1]) +'px';
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currentLayer.canvas.offsetTop + (cursorLocation[1] - lastPos[1]) > -canvasSize[0]*zoom*0.75 + 48)
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currentLayer.canvas.style.top = currentLayer.canvas.offsetTop + (cursorLocation[1] - lastPos[1]) +'px';
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*/
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}
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else if (currentTool == 'eyedropper' && dragging && mouseEvent.target == canvas) {
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else if (currentTool == 'eyedropper' && dragging && mouseEvent.target == currentLayer.canvas) {
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var selectedColor = context.getImageData(Math.floor(cursorLocation[0]/zoom),Math.floor(cursorLocation[1]/zoom),1,1).data;
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eyedropperPreview.style.borderColor = '#'+rgbToHex(selectedColor[0],selectedColor[1],selectedColor[2]);
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eyedropperPreview.style.display = 'block';
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eyedropperPreview.style.left = cursorLocation[0] + canvas.offsetLeft - 30 + 'px';
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eyedropperPreview.style.top = cursorLocation[1] + canvas.offsetTop - 30 + 'px';
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eyedropperPreview.style.left = cursorLocation[0] + currentLayer.canvas.offsetLeft - 30 + 'px';
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eyedropperPreview.style.top = cursorLocation[1] + currentLayer.canvas.offsetTop - 30 + 'px';
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var colorLightness = Math.max(selectedColor[0],selectedColor[1],selectedColor[2]);
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@ -213,8 +213,8 @@ function draw (mouseEvent) {
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brushSize = Math.max(1,newBrushSize);
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//fix offset so the cursor stays centered
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brushPreview.style.left = lastPos[0] + canvas.offsetLeft - brushSize * zoom / 2 + 'px';
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brushPreview.style.top = lastPos[1] + canvas.offsetTop - brushSize * zoom / 2 + 'px';
|
||||
brushPreview.style.left = lastPos[0] + currentLayer.canvas.offsetLeft - brushSize * zoom / 2 + 'px';
|
||||
brushPreview.style.top = lastPos[1] + currentLayer.canvas.offsetTop - brushSize * zoom / 2 + 'px';
|
||||
|
||||
updateCursor();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,9 +1,12 @@
|
|||
|
||||
function newPixel (width, height, palette) {
|
||||
var main = new Canvas(width, height, canvas);
|
||||
main.initialize();
|
||||
currentLayer = new Canvas(width, height, canvas);
|
||||
currentLayer.initialize();
|
||||
|
||||
canvasSize = main.canvasSize;
|
||||
checkerBoard = new Canvas(width, height, checkerBoard);
|
||||
checkerBoard.initialize();
|
||||
|
||||
canvasSize = currentLayer.canvasSize;
|
||||
//remove current palette
|
||||
colors = document.getElementsByClassName('color-button');
|
||||
while (colors.length > 0) {
|
||||
|
|
@ -40,14 +43,14 @@ function newPixel (width, height, palette) {
|
|||
//fill background of canvas with bg color
|
||||
fillCheckerboard();
|
||||
/*
|
||||
context.fillStyle = '#'+defaultBackgroundColor;
|
||||
context.fillRect(0, 0, canvasSize[0], canvasSize[1]);
|
||||
currentLayer.context.fillStyle = '#'+defaultBackgroundColor;
|
||||
currentLayer.context.fillRect(0, 0, canvasSize[0], canvasSize[1]);
|
||||
|
||||
console.log('#'+defaultBackgroundColor)
|
||||
*/
|
||||
|
||||
//set current drawing color as foreground color
|
||||
context.fillStyle = '#'+defaultForegroundColor;
|
||||
currentLayer.context.fillStyle = '#'+defaultForegroundColor;
|
||||
selectedPalette = 'none';
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@ function replaceAllOfColor (oldColor, newColor) {
|
|||
if (typeof newColor === 'string') newColor = hexToRgb(newColor);
|
||||
|
||||
//create temporary image from canvas to search through
|
||||
var tempImage = context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
|
||||
var tempImage = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
|
||||
|
||||
//loop through all pixels
|
||||
for (var i=0;i<tempImage.data.length;i+=4) {
|
||||
|
|
@ -21,5 +21,5 @@ function replaceAllOfColor (oldColor, newColor) {
|
|||
}
|
||||
|
||||
//put temp image back onto canvas
|
||||
context.putImageData(tempImage,0,0);
|
||||
currentLayer.context.putImageData(tempImage,0,0);
|
||||
}
|
||||
|
|
@ -12,7 +12,7 @@ function updateCursor () {
|
|||
brushPreview.style.display = 'block';
|
||||
brushPreview.style.width = eraserSize * zoom + 'px';
|
||||
brushPreview.style.height = eraserSize * zoom + 'px';
|
||||
context.fillStyle = 'rgba(255, 0, 0, 0)';
|
||||
currentLayer.context.fillStyle = 'rgba(255, 0, 0, 0)';
|
||||
} else
|
||||
brushPreview.style.display = 'none';
|
||||
|
||||
|
|
|
|||
|
|
@ -12,13 +12,12 @@ var prevEraserSize = 1;
|
|||
var menuOpen = false;
|
||||
var dialogueOpen = false;
|
||||
var documentCreated = false;
|
||||
var layers =
|
||||
|
||||
// Checkerboard management
|
||||
var firstCheckerBoardColor = 'rgba(139, 139, 139, 1)';
|
||||
var secondCheckerBoardColor = 'rgba(105, 105, 105, 1)';
|
||||
var checkerBoardSquareSize = 16;
|
||||
//var checkerBoard = document.getElementById("checkerboard").getContext("2d");
|
||||
var checkerBoard = document.getElementById("checkerboard");
|
||||
|
||||
//common elements
|
||||
var brushPreview = document.getElementById("brush-preview");
|
||||
|
|
@ -32,3 +31,9 @@ var popUpContainer = document.getElementById("pop-up-container");
|
|||
var canvas = document.getElementById("pixel-canvas");
|
||||
var context = canvas.getContext("2d");
|
||||
|
||||
// Layers
|
||||
var layers = [];
|
||||
var currentLayer;
|
||||
|
||||
//TODO all layers must be moved and resized at the same time
|
||||
|
||||
|
|
|
|||
|
|
@ -99,6 +99,7 @@
|
|||
|
||||
<div id="canvas-view">
|
||||
<canvas id="pixel-canvas"></canvas>
|
||||
<canvas id="checkerboard"></canvas>
|
||||
</div>
|
||||
<div id="canvas-view-shadow"></div>
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue