/**
 * @module ol/render/canvas/Immediate
 */
// FIXME test, especially polygons with holes and multipolygons
// FIXME need to handle large thick features (where pixel size matters)
// FIXME add offset and end to ol/geom/flat/transform~transform2D?

import {equals} from '../../array.js';
import {asColorLike} from '../../colorlike.js';
import {intersects} from '../../extent.js';
import GeometryType from '../../geom/GeometryType.js';
import {transformGeom2D} from '../../geom/SimpleGeometry.js';
import {transform2D} from '../../geom/flat/transform.js';
import VectorContext from '../VectorContext.js';
import {defaultTextAlign, defaultFillStyle, defaultLineCap, defaultLineDash, defaultLineDashOffset, defaultLineJoin, defaultLineWidth, defaultMiterLimit, defaultStrokeStyle, defaultTextBaseline, defaultFont} from '../canvas.js';
import {create as createTransform, compose as composeTransform} from '../../transform.js';

/**
 * @classdesc
 * A concrete subclass of {@link module:ol/render/VectorContext} that implements
 * direct rendering of features and geometries to an HTML5 Canvas context.
 * Instances of this class are created internally by the library and
 * provided to application code as vectorContext member of the
 * {@link module:ol/render/Event~RenderEvent} object associated with postcompose, precompose and
 * render events emitted by layers and maps.
 */
class CanvasImmediateRenderer extends VectorContext {
  /**
   * @param {CanvasRenderingContext2D} context Context.
   * @param {number} pixelRatio Pixel ratio.
   * @param {import("../../extent.js").Extent} extent Extent.
   * @param {import("../../transform.js").Transform} transform Transform.
   * @param {number} viewRotation View rotation.
   * @param {number=} opt_squaredTolerance Optional squared tolerance for simplification.
   * @param {import("../../proj.js").TransformFunction=} opt_userTransform Transform from user to view projection.
   */
  constructor(context, pixelRatio, extent, transform, viewRotation, opt_squaredTolerance, opt_userTransform) {
    super();

    /**
     * @private
     * @type {CanvasRenderingContext2D}
     */
    this.context_ = context;

    /**
     * @private
     * @type {number}
     */
    this.pixelRatio_ = pixelRatio;

    /**
     * @private
     * @type {import("../../extent.js").Extent}
     */
    this.extent_ = extent;

    /**
     * @private
     * @type {import("../../transform.js").Transform}
     */
    this.transform_ = transform;

    /**
     * @private
     * @type {number}
     */
    this.viewRotation_ = viewRotation;

    /**
     * @private
     * @type {number}
     */
    this.squaredTolerance_ = opt_squaredTolerance;

    /**
     * @private
     * @type {import("../../proj.js").TransformFunction}
     */
    this.userTransform_ = opt_userTransform;

    /**
     * @private
     * @type {?import("../canvas.js").FillState}
     */
    this.contextFillState_ = null;

    /**
     * @private
     * @type {?import("../canvas.js").StrokeState}
     */
    this.contextStrokeState_ = null;

    /**
     * @private
     * @type {?import("../canvas.js").TextState}
     */
    this.contextTextState_ = null;

    /**
     * @private
     * @type {?import("../canvas.js").FillState}
     */
    this.fillState_ = null;

    /**
     * @private
     * @type {?import("../canvas.js").StrokeState}
     */
    this.strokeState_ = null;

    /**
     * @private
     * @type {HTMLCanvasElement|HTMLVideoElement|HTMLImageElement}
     */
    this.image_ = null;

    /**
     * @private
     * @type {number}
     */
    this.imageAnchorX_ = 0;

    /**
     * @private
     * @type {number}
     */
    this.imageAnchorY_ = 0;

    /**
     * @private
     * @type {number}
     */
    this.imageHeight_ = 0;

    /**
     * @private
     * @type {number}
     */
    this.imageOpacity_ = 0;

    /**
     * @private
     * @type {number}
     */
    this.imageOriginX_ = 0;

    /**
     * @private
     * @type {number}
     */
    this.imageOriginY_ = 0;

    /**
     * @private
     * @type {boolean}
     */
    this.imageRotateWithView_ = false;

    /**
     * @private
     * @type {number}
     */
    this.imageRotation_ = 0;

    /**
     * @private
     * @type {number}
     */
    this.imageScale_ = 0;

    /**
     * @private
     * @type {number}
     */
    this.imageWidth_ = 0;

    /**
     * @private
     * @type {string}
     */
    this.text_ = '';

    /**
     * @private
     * @type {number}
     */
    this.textOffsetX_ = 0;

    /**
     * @private
     * @type {number}
     */
    this.textOffsetY_ = 0;

    /**
     * @private
     * @type {boolean}
     */
    this.textRotateWithView_ = false;

    /**
     * @private
     * @type {number}
     */
    this.textRotation_ = 0;

    /**
     * @private
     * @type {number}
     */
    this.textScale_ = 0;

    /**
     * @private
     * @type {?import("../canvas.js").FillState}
     */
    this.textFillState_ = null;

    /**
     * @private
     * @type {?import("../canvas.js").StrokeState}
     */
    this.textStrokeState_ = null;

    /**
     * @private
     * @type {?import("../canvas.js").TextState}
     */
    this.textState_ = null;

    /**
     * @private
     * @type {Array<number>}
     */
    this.pixelCoordinates_ = [];

    /**
     * @private
     * @type {import("../../transform.js").Transform}
     */
    this.tmpLocalTransform_ = createTransform();

  }

  /**
   * @param {Array<number>} flatCoordinates Flat coordinates.
   * @param {number} offset Offset.
   * @param {number} end End.
   * @param {number} stride Stride.
   * @private
   */
  drawImages_(flatCoordinates, offset, end, stride) {
    if (!this.image_) {
      return;
    }
    const pixelCoordinates = transform2D(
      flatCoordinates, offset, end, 2, this.transform_,
      this.pixelCoordinates_);
    const context = this.context_;
    const localTransform = this.tmpLocalTransform_;
    const alpha = context.globalAlpha;
    if (this.imageOpacity_ != 1) {
      context.globalAlpha = alpha * this.imageOpacity_;
    }
    let rotation = this.imageRotation_;
    if (this.imageRotateWithView_) {
      rotation += this.viewRotation_;
    }
    for (let i = 0, ii = pixelCoordinates.length; i < ii; i += 2) {
      const x = pixelCoordinates[i] - this.imageAnchorX_;
      const y = pixelCoordinates[i + 1] - this.imageAnchorY_;
      if (rotation !== 0 || this.imageScale_ != 1) {
        const centerX = x + this.imageAnchorX_;
        const centerY = y + this.imageAnchorY_;
        composeTransform(localTransform,
          centerX, centerY,
          this.imageScale_, this.imageScale_,
          rotation,
          -centerX, -centerY);
        context.setTransform.apply(context, localTransform);
      }
      context.drawImage(this.image_, this.imageOriginX_, this.imageOriginY_,
        this.imageWidth_, this.imageHeight_, x, y,
        this.imageWidth_, this.imageHeight_);
    }
    if (rotation !== 0 || this.imageScale_ != 1) {
      context.setTransform(1, 0, 0, 1, 0, 0);
    }
    if (this.imageOpacity_ != 1) {
      context.globalAlpha = alpha;
    }
  }

  /**
   * @param {Array<number>} flatCoordinates Flat coordinates.
   * @param {number} offset Offset.
   * @param {number} end End.
   * @param {number} stride Stride.
   * @private
   */
  drawText_(flatCoordinates, offset, end, stride) {
    if (!this.textState_ || this.text_ === '') {
      return;
    }
    if (this.textFillState_) {
      this.setContextFillState_(this.textFillState_);
    }
    if (this.textStrokeState_) {
      this.setContextStrokeState_(this.textStrokeState_);
    }
    this.setContextTextState_(this.textState_);
    const pixelCoordinates = transform2D(
      flatCoordinates, offset, end, stride, this.transform_,
      this.pixelCoordinates_);
    const context = this.context_;
    let rotation = this.textRotation_;
    if (this.textRotateWithView_) {
      rotation += this.viewRotation_;
    }
    for (; offset < end; offset += stride) {
      const x = pixelCoordinates[offset] + this.textOffsetX_;
      const y = pixelCoordinates[offset + 1] + this.textOffsetY_;
      if (rotation !== 0 || this.textScale_ != 1) {
        const localTransform = composeTransform(this.tmpLocalTransform_,
          x, y,
          this.textScale_, this.textScale_,
          rotation,
          -x, -y);
        context.setTransform.apply(context, localTransform);
      }
      if (this.textStrokeState_) {
        context.strokeText(this.text_, x, y);
      }
      if (this.textFillState_) {
        context.fillText(this.text_, x, y);
      }
    }
    if (rotation !== 0 || this.textScale_ != 1) {
      context.setTransform(1, 0, 0, 1, 0, 0);
    }
  }

  /**
   * @param {Array<number>} flatCoordinates Flat coordinates.
   * @param {number} offset Offset.
   * @param {number} end End.
   * @param {number} stride Stride.
   * @param {boolean} close Close.
   * @private
   * @return {number} end End.
   */
  moveToLineTo_(flatCoordinates, offset, end, stride, close) {
    const context = this.context_;
    const pixelCoordinates = transform2D(
      flatCoordinates, offset, end, stride, this.transform_,
      this.pixelCoordinates_);
    context.moveTo(pixelCoordinates[0], pixelCoordinates[1]);
    let length = pixelCoordinates.length;
    if (close) {
      length -= 2;
    }
    for (let i = 2; i < length; i += 2) {
      context.lineTo(pixelCoordinates[i], pixelCoordinates[i + 1]);
    }
    if (close) {
      context.closePath();
    }
    return end;
  }

  /**
   * @param {Array<number>} flatCoordinates Flat coordinates.
   * @param {number} offset Offset.
   * @param {Array<number>} ends Ends.
   * @param {number} stride Stride.
   * @private
   * @return {number} End.
   */
  drawRings_(flatCoordinates, offset, ends, stride) {
    for (let i = 0, ii = ends.length; i < ii; ++i) {
      offset = this.moveToLineTo_(flatCoordinates, offset, ends[i], stride, true);
    }
    return offset;
  }

  /**
   * Render a circle geometry into the canvas.  Rendering is immediate and uses
   * the current fill and stroke styles.
   *
   * @param {import("../../geom/Circle.js").default} geometry Circle geometry.
   * @override
   * @api
   */
  drawCircle(geometry) {
    if (!intersects(this.extent_, geometry.getExtent())) {
      return;
    }
    if (this.fillState_ || this.strokeState_) {
      if (this.fillState_) {
        this.setContextFillState_(this.fillState_);
      }
      if (this.strokeState_) {
        this.setContextStrokeState_(this.strokeState_);
      }
      const pixelCoordinates = transformGeom2D(
        geometry, this.transform_, this.pixelCoordinates_);
      const dx = pixelCoordinates[2] - pixelCoordinates[0];
      const dy = pixelCoordinates[3] - pixelCoordinates[1];
      const radius = Math.sqrt(dx * dx + dy * dy);
      const context = this.context_;
      context.beginPath();
      context.arc(
        pixelCoordinates[0], pixelCoordinates[1], radius, 0, 2 * Math.PI);
      if (this.fillState_) {
        context.fill();
      }
      if (this.strokeState_) {
        context.stroke();
      }
    }
    if (this.text_ !== '') {
      this.drawText_(geometry.getCenter(), 0, 2, 2);
    }
  }

  /**
   * Set the rendering style.  Note that since this is an immediate rendering API,
   * any `zIndex` on the provided style will be ignored.
   *
   * @param {import("../../style/Style.js").default} style The rendering style.
   * @override
   * @api
   */
  setStyle(style) {
    this.setFillStrokeStyle(style.getFill(), style.getStroke());
    this.setImageStyle(style.getImage());
    this.setTextStyle(style.getText());
  }

  /**
   * Render a geometry into the canvas.  Call
   * {@link module:ol/render/canvas/Immediate#setStyle} first to set the rendering style.
   *
   * @param {import("../../geom/Geometry.js").default|import("../Feature.js").default} geometry The geometry to render.
   * @override
   * @api
   */
  drawGeometry(geometry) {
    const type = geometry.getType();
    switch (type) {
      case GeometryType.POINT:
        this.drawPoint(/** @type {import("../../geom/Point.js").default} */ (geometry));
        break;
      case GeometryType.LINE_STRING:
        this.drawLineString(/** @type {import("../../geom/LineString.js").default} */ (geometry));
        break;
      case GeometryType.POLYGON:
        this.drawPolygon(/** @type {import("../../geom/Polygon.js").default} */ (geometry));
        break;
      case GeometryType.MULTI_POINT:
        this.drawMultiPoint(/** @type {import("../../geom/MultiPoint.js").default} */ (geometry));
        break;
      case GeometryType.MULTI_LINE_STRING:
        this.drawMultiLineString(/** @type {import("../../geom/MultiLineString.js").default} */ (geometry));
        break;
      case GeometryType.MULTI_POLYGON:
        this.drawMultiPolygon(/** @type {import("../../geom/MultiPolygon.js").default} */ (geometry));
        break;
      case GeometryType.GEOMETRY_COLLECTION:
        this.drawGeometryCollection(/** @type {import("../../geom/GeometryCollection.js").default} */ (geometry));
        break;
      case GeometryType.CIRCLE:
        this.drawCircle(/** @type {import("../../geom/Circle.js").default} */ (geometry));
        break;
      default:
    }
  }

  /**
   * Render a feature into the canvas.  Note that any `zIndex` on the provided
   * style will be ignored - features are rendered immediately in the order that
   * this method is called.  If you need `zIndex` support, you should be using an
   * {@link module:ol/layer/Vector~VectorLayer} instead.
   *
   * @param {import("../../Feature.js").default} feature Feature.
   * @param {import("../../style/Style.js").default} style Style.
   * @override
   * @api
   */
  drawFeature(feature, style) {
    const geometry = style.getGeometryFunction()(feature);
    if (!geometry || !intersects(this.extent_, geometry.getExtent())) {
      return;
    }
    this.setStyle(style);
    this.drawGeometry(geometry);
  }

  /**
   * Render a GeometryCollection to the canvas.  Rendering is immediate and
   * uses the current styles appropriate for each geometry in the collection.
   *
   * @param {import("../../geom/GeometryCollection.js").default} geometry Geometry collection.
   * @override
   */
  drawGeometryCollection(geometry) {
    const geometries = geometry.getGeometriesArray();
    for (let i = 0, ii = geometries.length; i < ii; ++i) {
      this.drawGeometry(geometries[i]);
    }
  }

  /**
   * Render a Point geometry into the canvas.  Rendering is immediate and uses
   * the current style.
   *
   * @param {import("../../geom/Point.js").default|import("../Feature.js").default} geometry Point geometry.
   * @override
   */
  drawPoint(geometry) {
    if (this.squaredTolerance_) {
      geometry = /** @type {import("../../geom/Point.js").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));
    }
    const flatCoordinates = geometry.getFlatCoordinates();
    const stride = geometry.getStride();
    if (this.image_) {
      this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);
    }
    if (this.text_ !== '') {
      this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);
    }
  }

  /**
   * Render a MultiPoint geometry  into the canvas.  Rendering is immediate and
   * uses the current style.
   *
   * @param {import("../../geom/MultiPoint.js").default|import("../Feature.js").default} geometry MultiPoint geometry.
   * @override
   */
  drawMultiPoint(geometry) {
    if (this.squaredTolerance_) {
      geometry = /** @type {import("../../geom/MultiPoint.js").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));
    }
    const flatCoordinates = geometry.getFlatCoordinates();
    const stride = geometry.getStride();
    if (this.image_) {
      this.drawImages_(flatCoordinates, 0, flatCoordinates.length, stride);
    }
    if (this.text_ !== '') {
      this.drawText_(flatCoordinates, 0, flatCoordinates.length, stride);
    }
  }

  /**
   * Render a LineString into the canvas.  Rendering is immediate and uses
   * the current style.
   *
   * @param {import("../../geom/LineString.js").default|import("../Feature.js").default} geometry LineString geometry.
   * @override
   */
  drawLineString(geometry) {
    if (this.squaredTolerance_) {
      geometry = /** @type {import("../../geom/LineString.js").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));
    }
    if (!intersects(this.extent_, geometry.getExtent())) {
      return;
    }
    if (this.strokeState_) {
      this.setContextStrokeState_(this.strokeState_);
      const context = this.context_;
      const flatCoordinates = geometry.getFlatCoordinates();
      context.beginPath();
      this.moveToLineTo_(flatCoordinates, 0, flatCoordinates.length,
        geometry.getStride(), false);
      context.stroke();
    }
    if (this.text_ !== '') {
      const flatMidpoint = geometry.getFlatMidpoint();
      this.drawText_(flatMidpoint, 0, 2, 2);
    }
  }

  /**
   * Render a MultiLineString geometry into the canvas.  Rendering is immediate
   * and uses the current style.
   *
   * @param {import("../../geom/MultiLineString.js").default|import("../Feature.js").default} geometry MultiLineString geometry.
   * @override
   */
  drawMultiLineString(geometry) {
    if (this.squaredTolerance_) {
      geometry = /** @type {import("../../geom/MultiLineString.js").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));
    }
    const geometryExtent = geometry.getExtent();
    if (!intersects(this.extent_, geometryExtent)) {
      return;
    }
    if (this.strokeState_) {
      this.setContextStrokeState_(this.strokeState_);
      const context = this.context_;
      const flatCoordinates = geometry.getFlatCoordinates();
      let offset = 0;
      const ends = /** @type {Array<number>} */ (geometry.getEnds());
      const stride = geometry.getStride();
      context.beginPath();
      for (let i = 0, ii = ends.length; i < ii; ++i) {
        offset = this.moveToLineTo_(flatCoordinates, offset, ends[i], stride, false);
      }
      context.stroke();
    }
    if (this.text_ !== '') {
      const flatMidpoints = geometry.getFlatMidpoints();
      this.drawText_(flatMidpoints, 0, flatMidpoints.length, 2);
    }
  }

  /**
   * Render a Polygon geometry into the canvas.  Rendering is immediate and uses
   * the current style.
   *
   * @param {import("../../geom/Polygon.js").default|import("../Feature.js").default} geometry Polygon geometry.
   * @override
   */
  drawPolygon(geometry) {
    if (this.squaredTolerance_) {
      geometry = /** @type {import("../../geom/Polygon.js").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));
    }
    if (!intersects(this.extent_, geometry.getExtent())) {
      return;
    }
    if (this.strokeState_ || this.fillState_) {
      if (this.fillState_) {
        this.setContextFillState_(this.fillState_);
      }
      if (this.strokeState_) {
        this.setContextStrokeState_(this.strokeState_);
      }
      const context = this.context_;
      context.beginPath();
      this.drawRings_(geometry.getOrientedFlatCoordinates(),
        0, /** @type {Array<number>} */ (geometry.getEnds()), geometry.getStride());
      if (this.fillState_) {
        context.fill();
      }
      if (this.strokeState_) {
        context.stroke();
      }
    }
    if (this.text_ !== '') {
      const flatInteriorPoint = geometry.getFlatInteriorPoint();
      this.drawText_(flatInteriorPoint, 0, 2, 2);
    }
  }

  /**
   * Render MultiPolygon geometry into the canvas.  Rendering is immediate and
   * uses the current style.
   * @param {import("../../geom/MultiPolygon.js").default} geometry MultiPolygon geometry.
   * @override
   */
  drawMultiPolygon(geometry) {
    if (this.squaredTolerance_) {
      geometry = /** @type {import("../../geom/MultiPolygon.js").default} */ (geometry.simplifyTransformed(this.squaredTolerance_, this.userTransform_));
    }
    if (!intersects(this.extent_, geometry.getExtent())) {
      return;
    }
    if (this.strokeState_ || this.fillState_) {
      if (this.fillState_) {
        this.setContextFillState_(this.fillState_);
      }
      if (this.strokeState_) {
        this.setContextStrokeState_(this.strokeState_);
      }
      const context = this.context_;
      const flatCoordinates = geometry.getOrientedFlatCoordinates();
      let offset = 0;
      const endss = geometry.getEndss();
      const stride = geometry.getStride();
      context.beginPath();
      for (let i = 0, ii = endss.length; i < ii; ++i) {
        const ends = endss[i];
        offset = this.drawRings_(flatCoordinates, offset, ends, stride);
      }
      if (this.fillState_) {
        context.fill();
      }
      if (this.strokeState_) {
        context.stroke();
      }
    }
    if (this.text_ !== '') {
      const flatInteriorPoints = geometry.getFlatInteriorPoints();
      this.drawText_(flatInteriorPoints, 0, flatInteriorPoints.length, 2);
    }
  }

  /**
   * @param {import("../canvas.js").FillState} fillState Fill state.
   * @private
   */
  setContextFillState_(fillState) {
    const context = this.context_;
    const contextFillState = this.contextFillState_;
    if (!contextFillState) {
      context.fillStyle = fillState.fillStyle;
      this.contextFillState_ = {
        fillStyle: fillState.fillStyle
      };
    } else {
      if (contextFillState.fillStyle != fillState.fillStyle) {
        contextFillState.fillStyle = context.fillStyle = fillState.fillStyle;
      }
    }
  }

  /**
   * @param {import("../canvas.js").StrokeState} strokeState Stroke state.
   * @private
   */
  setContextStrokeState_(strokeState) {
    const context = this.context_;
    const contextStrokeState = this.contextStrokeState_;
    if (!contextStrokeState) {
      context.lineCap = strokeState.lineCap;
      if (context.setLineDash) {
        context.setLineDash(strokeState.lineDash);
        context.lineDashOffset = strokeState.lineDashOffset;
      }
      context.lineJoin = strokeState.lineJoin;
      context.lineWidth = strokeState.lineWidth;
      context.miterLimit = strokeState.miterLimit;
      context.strokeStyle = strokeState.strokeStyle;
      this.contextStrokeState_ = {
        lineCap: strokeState.lineCap,
        lineDash: strokeState.lineDash,
        lineDashOffset: strokeState.lineDashOffset,
        lineJoin: strokeState.lineJoin,
        lineWidth: strokeState.lineWidth,
        miterLimit: strokeState.miterLimit,
        strokeStyle: strokeState.strokeStyle
      };
    } else {
      if (contextStrokeState.lineCap != strokeState.lineCap) {
        contextStrokeState.lineCap = context.lineCap = strokeState.lineCap;
      }
      if (context.setLineDash) {
        if (!equals(contextStrokeState.lineDash, strokeState.lineDash)) {
          context.setLineDash(contextStrokeState.lineDash = strokeState.lineDash);
        }
        if (contextStrokeState.lineDashOffset != strokeState.lineDashOffset) {
          contextStrokeState.lineDashOffset = context.lineDashOffset =
              strokeState.lineDashOffset;
        }
      }
      if (contextStrokeState.lineJoin != strokeState.lineJoin) {
        contextStrokeState.lineJoin = context.lineJoin = strokeState.lineJoin;
      }
      if (contextStrokeState.lineWidth != strokeState.lineWidth) {
        contextStrokeState.lineWidth = context.lineWidth = strokeState.lineWidth;
      }
      if (contextStrokeState.miterLimit != strokeState.miterLimit) {
        contextStrokeState.miterLimit = context.miterLimit =
            strokeState.miterLimit;
      }
      if (contextStrokeState.strokeStyle != strokeState.strokeStyle) {
        contextStrokeState.strokeStyle = context.strokeStyle =
            strokeState.strokeStyle;
      }
    }
  }

  /**
   * @param {import("../canvas.js").TextState} textState Text state.
   * @private
   */
  setContextTextState_(textState) {
    const context = this.context_;
    const contextTextState = this.contextTextState_;
    const textAlign = textState.textAlign ?
      textState.textAlign : defaultTextAlign;
    if (!contextTextState) {
      context.font = textState.font;
      context.textAlign = /** @type {CanvasTextAlign} */ (textAlign);
      context.textBaseline = /** @type {CanvasTextBaseline} */ (textState.textBaseline);
      this.contextTextState_ = {
        font: textState.font,
        textAlign: textAlign,
        textBaseline: textState.textBaseline
      };
    } else {
      if (contextTextState.font != textState.font) {
        contextTextState.font = context.font = textState.font;
      }
      if (contextTextState.textAlign != textAlign) {
        contextTextState.textAlign = context.textAlign = /** @type {CanvasTextAlign} */ (textAlign);
      }
      if (contextTextState.textBaseline != textState.textBaseline) {
        contextTextState.textBaseline = context.textBaseline =
          /** @type {CanvasTextBaseline} */ (textState.textBaseline);
      }
    }
  }

  /**
   * Set the fill and stroke style for subsequent draw operations.  To clear
   * either fill or stroke styles, pass null for the appropriate parameter.
   *
   * @param {import("../../style/Fill.js").default} fillStyle Fill style.
   * @param {import("../../style/Stroke.js").default} strokeStyle Stroke style.
   * @override
   */
  setFillStrokeStyle(fillStyle, strokeStyle) {
    if (!fillStyle) {
      this.fillState_ = null;
    } else {
      const fillStyleColor = fillStyle.getColor();
      this.fillState_ = {
        fillStyle: asColorLike(fillStyleColor ?
          fillStyleColor : defaultFillStyle)
      };
    }
    if (!strokeStyle) {
      this.strokeState_ = null;
    } else {
      const strokeStyleColor = strokeStyle.getColor();
      const strokeStyleLineCap = strokeStyle.getLineCap();
      const strokeStyleLineDash = strokeStyle.getLineDash();
      const strokeStyleLineDashOffset = strokeStyle.getLineDashOffset();
      const strokeStyleLineJoin = strokeStyle.getLineJoin();
      const strokeStyleWidth = strokeStyle.getWidth();
      const strokeStyleMiterLimit = strokeStyle.getMiterLimit();
      this.strokeState_ = {
        lineCap: strokeStyleLineCap !== undefined ?
          strokeStyleLineCap : defaultLineCap,
        lineDash: strokeStyleLineDash ?
          strokeStyleLineDash : defaultLineDash,
        lineDashOffset: strokeStyleLineDashOffset ?
          strokeStyleLineDashOffset : defaultLineDashOffset,
        lineJoin: strokeStyleLineJoin !== undefined ?
          strokeStyleLineJoin : defaultLineJoin,
        lineWidth: this.pixelRatio_ * (strokeStyleWidth !== undefined ?
          strokeStyleWidth : defaultLineWidth),
        miterLimit: strokeStyleMiterLimit !== undefined ?
          strokeStyleMiterLimit : defaultMiterLimit,
        strokeStyle: asColorLike(strokeStyleColor ?
          strokeStyleColor : defaultStrokeStyle)
      };
    }
  }

  /**
   * Set the image style for subsequent draw operations.  Pass null to remove
   * the image style.
   *
   * @param {import("../../style/Image.js").default} imageStyle Image style.
   * @override
   */
  setImageStyle(imageStyle) {
    if (!imageStyle) {
      this.image_ = null;
    } else {
      const imageAnchor = imageStyle.getAnchor();
      // FIXME pixel ratio
      const imageImage = imageStyle.getImage(1);
      const imageOrigin = imageStyle.getOrigin();
      const imageSize = imageStyle.getSize();
      this.imageAnchorX_ = imageAnchor[0];
      this.imageAnchorY_ = imageAnchor[1];
      this.imageHeight_ = imageSize[1];
      this.image_ = imageImage;
      this.imageOpacity_ = imageStyle.getOpacity();
      this.imageOriginX_ = imageOrigin[0];
      this.imageOriginY_ = imageOrigin[1];
      this.imageRotateWithView_ = imageStyle.getRotateWithView();
      this.imageRotation_ = imageStyle.getRotation();
      this.imageScale_ = imageStyle.getScale() * this.pixelRatio_;
      this.imageWidth_ = imageSize[0];
    }
  }

  /**
   * Set the text style for subsequent draw operations.  Pass null to
   * remove the text style.
   *
   * @param {import("../../style/Text.js").default} textStyle Text style.
   * @override
   */
  setTextStyle(textStyle) {
    if (!textStyle) {
      this.text_ = '';
    } else {
      const textFillStyle = textStyle.getFill();
      if (!textFillStyle) {
        this.textFillState_ = null;
      } else {
        const textFillStyleColor = textFillStyle.getColor();
        this.textFillState_ = {
          fillStyle: asColorLike(textFillStyleColor ?
            textFillStyleColor : defaultFillStyle)
        };
      }
      const textStrokeStyle = textStyle.getStroke();
      if (!textStrokeStyle) {
        this.textStrokeState_ = null;
      } else {
        const textStrokeStyleColor = textStrokeStyle.getColor();
        const textStrokeStyleLineCap = textStrokeStyle.getLineCap();
        const textStrokeStyleLineDash = textStrokeStyle.getLineDash();
        const textStrokeStyleLineDashOffset = textStrokeStyle.getLineDashOffset();
        const textStrokeStyleLineJoin = textStrokeStyle.getLineJoin();
        const textStrokeStyleWidth = textStrokeStyle.getWidth();
        const textStrokeStyleMiterLimit = textStrokeStyle.getMiterLimit();
        this.textStrokeState_ = {
          lineCap: textStrokeStyleLineCap !== undefined ?
            textStrokeStyleLineCap : defaultLineCap,
          lineDash: textStrokeStyleLineDash ?
            textStrokeStyleLineDash : defaultLineDash,
          lineDashOffset: textStrokeStyleLineDashOffset ?
            textStrokeStyleLineDashOffset : defaultLineDashOffset,
          lineJoin: textStrokeStyleLineJoin !== undefined ?
            textStrokeStyleLineJoin : defaultLineJoin,
          lineWidth: textStrokeStyleWidth !== undefined ?
            textStrokeStyleWidth : defaultLineWidth,
          miterLimit: textStrokeStyleMiterLimit !== undefined ?
            textStrokeStyleMiterLimit : defaultMiterLimit,
          strokeStyle: asColorLike(textStrokeStyleColor ?
            textStrokeStyleColor : defaultStrokeStyle)
        };
      }
      const textFont = textStyle.getFont();
      const textOffsetX = textStyle.getOffsetX();
      const textOffsetY = textStyle.getOffsetY();
      const textRotateWithView = textStyle.getRotateWithView();
      const textRotation = textStyle.getRotation();
      const textScale = textStyle.getScale();
      const textText = textStyle.getText();
      const textTextAlign = textStyle.getTextAlign();
      const textTextBaseline = textStyle.getTextBaseline();
      this.textState_ = {
        font: textFont !== undefined ?
          textFont : defaultFont,
        textAlign: textTextAlign !== undefined ?
          textTextAlign : defaultTextAlign,
        textBaseline: textTextBaseline !== undefined ?
          textTextBaseline : defaultTextBaseline
      };
      this.text_ = textText !== undefined ? textText : '';
      this.textOffsetX_ =
          textOffsetX !== undefined ? (this.pixelRatio_ * textOffsetX) : 0;
      this.textOffsetY_ =
          textOffsetY !== undefined ? (this.pixelRatio_ * textOffsetY) : 0;
      this.textRotateWithView_ = textRotateWithView !== undefined ? textRotateWithView : false;
      this.textRotation_ = textRotation !== undefined ? textRotation : 0;
      this.textScale_ = this.pixelRatio_ * (textScale !== undefined ?
        textScale : 1);
    }
  }
}


export default CanvasImmediateRenderer;