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* Implemented text align in canvas

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Sync1211 2022-05-24 08:40:46 +02:00
parent 0608d87cf6
commit 0a65235065
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1 changed files with 10 additions and 2 deletions
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12
www/main.js
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@ -307,6 +307,7 @@ class CanvasController {
this._thresholdRange = document.querySelector('[name="threshold"]'); this._thresholdRange = document.querySelector('[name="threshold"]');
this._energyRange = document.querySelector('[name="energy"]'); this._energyRange = document.querySelector('[name="energy"]');
this.imageUrl = null; this.imageUrl = null;
this.textAlign = 0; // 0: Left, 1: Center, 2: Right
const prevent_default = (event) => { const prevent_default = (event) => {
event.preventDefault(); event.preventDefault();
@ -329,7 +330,7 @@ class CanvasController {
putEvent('#insert-text' , 'click', () => Dialog.alert("#text-input", () => this.insertText(this.textArea.value))); putEvent('#insert-text' , 'click', () => Dialog.alert("#text-input", () => this.insertText(this.textArea.value)));
putEvent('#text-size' , 'change', () => this.textArea.style["font-size"] = this.textSize.value + "px"); putEvent('#text-size' , 'change', () => this.textArea.style["font-size"] = this.textSize.value + "px");
putEvent('#text-font' , 'change', () => this.textArea.style["font-family"] = this.textFont.value); putEvent('#text-font' , 'change', () => this.textArea.style["font-family"] = this.textFont.value);
putEvent('input[name="wrap-by-space"]' , 'change', () => this.textArea.style["word-break"] = this.wrapBySpace.checked ? "break-word" : "break-all"); //TODO: refresh on startup putEvent('input[name="wrap-by-space"]' , 'change', () => this.textArea.style["word-break"] = this.wrapBySpace.checked ? "break-word" : "break-all");
putEvent('#button-preview' , 'click', this.activatePreview , this); putEvent('#button-preview' , 'click', this.activatePreview , this);
putEvent('#button-reset' , 'click', this.reset , this); putEvent('#button-reset' , 'click', this.reset , this);
putEvent('#canvas-expand' , 'click', this.expand , this); putEvent('#canvas-expand' , 'click', this.expand , this);
@ -511,7 +512,14 @@ class CanvasController {
let y_pos = y_step; let y_pos = y_step;
for (let line of lines) { for (let line of lines) {
ctx.fillText(line, 0, y_pos); let x_pos = 0;
if (this.textAlign == 2) {
x_pos = Math.max(max_width - ctx.measureText(line).width, 0)
} else if (this.textAlign == 1) {
x_pos = Math.max(max_width - ctx.measureText(line).width, 0) / 2;
}
ctx.fillText(line, x_pos, y_pos);
y_pos += y_step; y_pos += y_step;
} }