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Choosing colors from the gradient generator now works

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mr. M 2024-10-25 12:54:43 +02:00
parent 4c79e99adf
commit 23e6294c9a
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1 changed files with 47 additions and 14 deletions
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61
src/ZenGradientGenerator.mjs
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@ -1,12 +1,14 @@
{
class ZenThemePicker extends ZenDOMOperatedFeature {
static GRADIENT_IMAGE_URL = 'chrome://browser/content/zen-images/gradient.png';
static MAX_DOTS = 5;
init() {
ChromeUtils.defineLazyGetter(this, 'panel', () => document.getElementById('PanelUI-zen-gradient-generator'));
ChromeUtils.defineLazyGetter(this, 'toolbox', () => document.getElementById('navigator-toolbox'));
this.initContextMenu();
this.initThemePicker();
this.initCanvas();
}
initContextMenu() {
@ -25,8 +27,38 @@
});
}
initCanvas() {
this.image = new Image();
this.image.src = ZenThemePicker.GRADIENT_IMAGE_URL;
// wait for the image to load
this.image.onload = this.onImageLoad.bind(this);
}
onImageLoad() {
// resize the image to fit the panel
const imageSize = 300 - 20; // 20 is the padding (10px)
const scale = imageSize / Math.max(this.image.width, this.image.height);
this.image.width *= scale;
this.image.height *= scale;
this.canvas = document.createElement('canvas');
this.canvas.width = this.image.width;
this.canvas.height = this.image.height;
this.panel.appendChild(this.canvas);
this.canvasCtx = this.canvas.getContext('2d');
this.canvasCtx.drawImage(this.image, 0, 0);
this.canvas.setAttribute('hidden', 'true');
// Call the rest of the initialization
this.initContextMenu();
this.initThemePicker();
}
initThemePicker() {
const themePicker = this.panel.querySelector('.zen-theme-picker-gradient');
themePicker.style.setProperty('--zen-theme-picker-gradient-image', `url(${ZenThemePicker.GRADIENT_IMAGE_URL})`);
themePicker.addEventListener('mousemove', this.onDotMouseMove.bind(this));
themePicker.addEventListener('mouseup', this.onDotMouseUp.bind(this));
}
@ -40,11 +72,9 @@
}
getColorFromPosition(x, y) {
// get the color from the x and y position
const r = x * 255;
const g = y * 255;
const b = 0;
return [r, g, b];
// get the color from the x and y from the image
const imageData = this.canvasCtx.getImageData(x, y, 1, 1);
return imageData.data;
}
createDot(color) {
@ -74,7 +104,7 @@
onDotMouseMove(event) {
if (this.dragging) {
event.preventDefault();
const rect = this.panel.getBoundingClientRect();
const rect = this.panel.querySelector('.zen-theme-picker-gradient').getBoundingClientRect();
let x = (event.clientX - rect.left) / rect.width;
let y = (event.clientY - rect.top) / rect.height;
// percentage to pixel
@ -82,20 +112,20 @@
const maxX = rect.width - dotSize;
const maxY = rect.height - dotSize;
if (x < 0) {
x = 0;
x = 0.01;
} else if (x > 1) {
x = 1;
x = 0.99;
}
if (y < 0) {
y = 0;
y = 0.01;
} else if (y > 1) {
y = 1;
y = 0.99;
}
const pixelX = x * rect.width - dotSize*2;
const pixelY = y * rect.height - dotSize*2;
this.draggedDot.style.left = `${Math.min(maxX, Math.max(0, pixelX))}px`;
this.draggedDot.style.top = `${Math.min(maxY, Math.max(0, pixelY))}px`;
const color = this.getColorFromPosition(x, y);
const color = this.getColorFromPosition(pixelX, pixelY);
this.draggedDot.style.setProperty('--zen-theme-picker-dot-color', `rgb(${color[0]}, ${color[1]}, ${color[2]})`);
}
}
@ -109,7 +139,10 @@
this.draggedDot = null;
return;
}
this.createDot([Math.random() * 255, Math.random() * 255, Math.random() * 255]);
this.numberOfDots = this.panel.querySelectorAll('.zen-theme-picker-dot').length;
if (this.numberOfDots < ZenThemePicker.MAX_DOTS) {
this.createDot([Math.random() * 255, Math.random() * 255, Math.random() * 255]);
}
}
}