mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-12 10:39:00 +00:00
107 lines
3.6 KiB
JavaScript
107 lines
3.6 KiB
JavaScript
var img_confirm = new Image();
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img_confirm.src = "screen-confirm.png";
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var img_yesno = new Image();
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img_yesno.src = "screen-yes-no.png";
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var pixelPerfect = true;
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function ppMeasureWidth(ctx, text) {
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if (!pixelPerfect) {
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return ctx.measureText(text).width;
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} else {
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var w = 0;
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for (var i = 0; i < text.length; i++) {
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var c = text.charCodeAt(i);
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if (c >= 32 && c < 127) {
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w += ctx.fontAdvances[c - 32];
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} else {
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w += 12; // sane default for unsupported Unicode chars
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}
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}
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return w;
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}
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}
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function ppFillText(ctx, text, x, y) {
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if (!pixelPerfect) {
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ctx.fillText(text, x, y);
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} else {
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for (var i = 0; i < text.length; i++) {
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var c = text[i];
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ctx.fillText(c, x, y);
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x += ppMeasureWidth(ctx, c);
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}
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}
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}
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function setFont(ctx, bold, mono) {
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ctx.fillStyle = 'white';
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var font = bold ? 'bold ' : '';
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font += '20px "Roboto';
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font += mono ? ' Mono"' : '"';
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ctx.font = font;
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if (mono) {
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// advance is always 12px for Roboto Mono
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ctx.fontAdvances = Array(126 - 32 + 1).fill(12);
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} else {
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if (bold) {
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// advances taken from font_roboto_bold_20.c (column 3)
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ctx.fontAdvances = [5, 5, 7, 13, 12, 15, 14, 4, 7, 8, 9, 12, 6, 8, 5, 8, 12, 11, 12, 12, 11, 12, 12, 12, 12, 12, 5, 5, 11, 11, 10, 11, 18, 13, 13, 13, 13, 11, 11, 14, 14, 5, 12, 12, 11, 17, 14, 14, 13, 14, 13, 13, 14, 13, 13, 18, 13, 13, 13, 6, 8, 6, 9, 11, 7, 11, 11, 11, 12, 11, 9, 12, 11, 5, 6, 11, 5, 17, 11, 12, 11, 12, 8, 11, 8, 11, 10, 15, 10, 11, 10, 7, 6, 7, 13];
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} else {
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// advances taken from font_roboto_regular_20.c (column 3)
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ctx.fontAdvances = [5, 5, 6, 13, 11, 15, 13, 4, 7, 7, 9, 12, 4, 7, 4, 8, 11, 11, 11, 11, 12, 12, 11, 12, 11, 11, 4, 4, 10, 10, 10, 10, 18, 13, 13, 13, 13, 12, 12, 13, 15, 6, 12, 13, 11, 18, 15, 13, 13, 13, 13, 12, 13, 12, 13, 18, 13, 12, 12, 5, 8, 6, 8, 11, 6, 10, 11, 11, 11, 11, 8, 11, 10, 4, 5, 10, 5, 17, 10, 12, 11, 12, 7, 10, 8, 10, 10, 15, 10, 9, 10, 7, 6, 8, 13];
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}
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}
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}
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function text(ctx, x, y, text, bold, mono) {
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setFont(ctx, bold, mono);
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ppFillText(ctx, text, x, y);
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}
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function textCenter(ctx, x, y, text, bold, mono) {
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setFont(ctx, bold, mono);
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var w = ppMeasureWidth(ctx, text);
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ppFillText(ctx, text, x - w / 2, y);
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}
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function render() {
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var title_str = document.getElementById("title").value;
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var line_str = [];
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var bold = [];
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var mono = [];
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for (var i = 1; i <= 5; i++) {
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line_str[i] = document.getElementById("line" + i).value;
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bold[i] = document.getElementById("bold_line" + i).checked;
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mono[i] = document.getElementById("mono_line" + i).checked;
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}
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var confirm_str = document.getElementById("confirm").value;
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var canvas = document.getElementById('canvas');
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var ctx = canvas.getContext('2d');
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if (confirm_str) {
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ctx.drawImage(img_confirm, 0, 0);
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} else {
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ctx.drawImage(img_yesno, 0, 0);
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}
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text(ctx, 44, 35, title_str, true);
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for (var i = 1; i <= 5; i++) {
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text(ctx, 14, 48 + 26 * i, line_str[i], bold[i], mono[i]);
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}
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textCenter(ctx, 120, 215, confirm_str, true);
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}
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window.onload = function() {
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document.getElementById("title").onkeyup = render;
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for (var i = 1; i <= 5; i++) {
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document.getElementById("line" + i).onkeyup = render;
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document.getElementById("bold_line" + i).onclick = render;
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document.getElementById("mono_line" + i).onclick = render;
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}
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document.getElementById("confirm").onkeyup = render;
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render();
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}
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