Method _drawToCache

src/server/web/public/terminal.js:7757–7878

(e3, t3, i3, n2, a2 = false)

            return d2.setColor(e3, s3, f2), f2;
          }
          _getContrastCache(e3) {
            return e3 ? this._config.colors.halfContrastCache : this._config.colors.contrastCache;
          }
          _drawToCache(e3, t3, i3, n2, a2 = false) {
            const h2 = "number" == typeof e3 ? String.fromCharCode(e3) : e3, l2 = Math.min(this._config.deviceCellWidth * Math.max(h2.length, 2) + 4, this._textureSize);
            this._tmpCanvas.width < l2 && (this._tmpCanvas.width = l2);
            const d2 = Math.min(this._config.deviceCellHeight + 8, this._textureSize);
            if (this._tmpCanvas.height < d2 && (this._tmpCanvas.height = d2), this._tmpCtx.save(), this._workAttributeData.fg = i3, this._workAttributeData.bg = t3, this._workAttributeData.extended.ext = n2, this._workAttributeData.isInvisible()) return _;
            const u2 = !!this._workAttributeData.isBold(), v2 = !!this._workAttributeData.isInverse(), p2 = !!this._workAttributeData.isDim(), C = !!this._workAttributeData.isItalic(), m = !!this._workAttributeData.isUnderline(), L = !!this._workAttributeData.isStrikethrough(), x = !!this._workAttributeData.isOverline();
            let w = this._workAttributeData.getFgColor(), b = this._workAttributeData.getFgColorMode(), M = this._workAttributeData.getBgColor(), R = this._workAttributeData.getBgColorMode();
            if (v2) {
              const e4 = w;
              w = M, M = e4;
              const t4 = b;
              b = R, R = t4;
            }
            const y = this._getBackgroundColor(R, M, v2, p2);
            this._tmpCtx.globalCompositeOperation = "copy", this._tmpCtx.fillStyle = y.css, this._tmpCtx.fillRect(0, 0, this._tmpCanvas.width, this._tmpCanvas.height), this._tmpCtx.globalCompositeOperation = "source-over";
            const A = u2 ? this._config.fontWeightBold : this._config.fontWeight, E = C ? "italic" : "";
            this._tmpCtx.font = `${E} ${A} ${this._config.fontSize * this._config.devicePixelRatio}px ${this._config.fontFamily}`, this._tmpCtx.textBaseline = s2.TEXT_BASELINE;
            const S = 1 === h2.length && (0, o.isPowerlineGlyph)(h2.charCodeAt(0)), T = 1 === h2.length && (0, o.isRestrictedPowerlineGlyph)(h2.charCodeAt(0)), D = this._getForegroundColor(t3, R, M, i3, b, w, v2, p2, u2, (0, o.treatGlyphAsBackgroundColor)(h2.charCodeAt(0)));
            this._tmpCtx.fillStyle = D.css;
            const B = T ? 0 : 4;
            let F = false;
            false !== this._config.customGlyphs && (F = (0, r.tryDrawCustomChar)(this._tmpCtx, h2, B, B, this._config.deviceCellWidth, this._config.deviceCellHeight, this._config.fontSize, this._config.devicePixelRatio));
            let P, I = !S;
            if (P = "number" == typeof e3 ? this._unicodeService.wcwidth(e3) : this._unicodeService.getStringCellWidth(e3), m) {
              this._tmpCtx.save();
              const e4 = Math.max(1, Math.floor(this._config.fontSize * this._config.devicePixelRatio / 15)), t4 = e4 % 2 == 1 ? 0.5 : 0;
              if (this._tmpCtx.lineWidth = e4, this._workAttributeData.isUnderlineColorDefault()) this._tmpCtx.strokeStyle = this._tmpCtx.fillStyle;
              else if (this._workAttributeData.isUnderlineColorRGB()) I = false, this._tmpCtx.strokeStyle = `rgb(${c.AttributeData.toColorRGB(this._workAttributeData.getUnderlineColor()).join(",")})`;
              else {
                I = false;
                let e5 = this._workAttributeData.getUnderlineColor();
                this._config.drawBoldTextInBrightColors && this._workAttributeData.isBold() && e5 < 8 && (e5 += 8), this._tmpCtx.strokeStyle = this._getColorFromAnsiIndex(e5).css;
              }
              this._tmpCtx.beginPath();
              const i4 = B, s3 = Math.ceil(B + this._config.deviceCharHeight) - t4 - (a2 ? 2 * e4 : 0), r2 = s3 + e4, n3 = s3 + 2 * e4;
              let l3 = this._workAttributeData.getUnderlineVariantOffset();
              for (let a3 = 0; a3 < P; a3++) {
                this._tmpCtx.save();
                const h3 = i4 + a3 * this._config.deviceCellWidth, c2 = i4 + (a3 + 1) * this._config.deviceCellWidth, d3 = h3 + this._config.deviceCellWidth / 2;
                switch (this._workAttributeData.extended.underlineStyle) {
                  case 2:
                    this._tmpCtx.moveTo(h3, s3), this._tmpCtx.lineTo(c2, s3), this._tmpCtx.moveTo(h3, n3), this._tmpCtx.lineTo(c2, n3);
                    break;
                  case 3:
                    const i5 = e4 <= 1 ? n3 : Math.ceil(B + this._config.deviceCharHeight - e4 / 2) - t4, a4 = e4 <= 1 ? s3 : Math.ceil(B + this._config.deviceCharHeight + e4 / 2) - t4, _2 = new Path2D();
                    _2.rect(h3, s3, this._config.deviceCellWidth, n3 - s3), this._tmpCtx.clip(_2), this._tmpCtx.moveTo(h3 - this._config.deviceCellWidth / 2, r2), this._tmpCtx.bezierCurveTo(h3 - this._config.deviceCellWidth / 2, a4, h3, a4, h3, r2), this._tmpCtx.bezierCurveTo(h3, i5, d3, i5, d3, r2), this._tmpCtx.bezierCurveTo(d3, a4, c2, a4, c2, r2), this._tmpCtx.bezierCurveTo(c2, i5, c2 + this._config.deviceCellWidth / 2, i5, c2 + this._config.deviceCellWidth / 2, r2);
                    break;
                  case 4:
                    const u3 = 0 === l3 ? 0 : l3 >= e4 ? 2 * e4 - l3 : e4 - l3;
                    false == !(l3 >= e4) || 0 === u3 ? (this._tmpCtx.setLineDash([Math.round(e4), Math.round(e4)]), this._tmpCtx.moveTo(h3 + u3, s3), this._tmpCtx.lineTo(c2, s3)) : (this._tmpCtx.setLineDash([Math.round(e4), Math.round(e4)]), this._tmpCtx.moveTo(h3, s3), this._tmpCtx.lineTo(h3 + u3, s3), this._tmpCtx.moveTo(h3 + u3 + e4, s3), this._tmpCtx.lineTo(c2, s3)), l3 = (0, o.computeNextVariantOffset)(c2 - h3, e4, l3);
                    break;
                  case 5:
                    const g2 = 0.6, v3 = 0.3, f2 = c2 - h3, p3 = Math.floor(g2 * f2), C2 = Math.floor(v3 * f2), m2 = f2 - p3 - C2;
                    this._tmpCtx.setLineDash([p3, C2, m2]), this._tmpCtx.moveTo(h3, s3), this._tmpCtx.lineTo(c2, s3);
                    break;