Package com.myscript.iink.graphics

Interface ICanvas

public interface ICanvas
The ICanvas interface receives drawing commands.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    blendOffscreen(int id, float src_x, float src_y, float src_width, float src_height, float dest_x, float dest_y, float dest_width, float dest_height, @NotNull Color blend_color)
    Requests drawing of an offscreen surface (usually a bitmap).
    @NotNull IPath
    createPath()
    Creates a new general path.
    void
    drawLine(float x1, float y1, float x2, float y2)
    Requests drawing of a line segment.
    void
    drawObject(@NotNull String url, @NotNull String mimeType, float x, float y, float width, float height)
    Requests drawing of an object.
    void
    drawPath(@NotNull IPath path)
    Requests drawing of a path.
    void
    drawRectangle(float x, float y, float width, float height)
    Requests drawing of a rectangle.
    void
    drawText(@NotNull String label, float x, float y, float xmin, float ymin, float xmax, float ymax)
    Requests drawing of text.
    void
    endDraw()
    Indicates that a drawing session ends.
    void
    endGroup(@NotNull String id)
    Indicates that the drawing of a group of items ends.
    void
    endItem(@NotNull String id)
    Indicates that the drawing of an item ends.
    @NotNull Transform
    getTransform()
    Retrieves the current transform.
    void
    setDropShadow(float xOffset, float yOffset, float radius, @NotNull Color color)
    Configures the drop shadow display.
    void
    setFillColor(@NotNull Color fillColor)
    Sets the fill color.
    void
    setFillRule(@NotNull FillRule fillRule)
    Sets the fill rule.
    void
    setFontProperties(@NotNull String family, float lineHeight, float size, @NotNull String style, @NotNull String variant, int weight)
    Sets the font properties.
    void
    setStrokeColor(@NotNull Color strokeColor)
    Sets the stroke color.
    void
    setStrokeDashArray(@org.jetbrains.annotations.Nullable float[] strokeDashArray)
    Sets the pattern of dashes and gaps used to stroke paths.
    void
    setStrokeDashOffset(float strokeDashOffset)
    Sets the distance into the dash pattern to start the dash.
    void
    setStrokeLineCap(@NotNull LineCap strokeLineCap)
    Sets the stroke line cap.
    void
    setStrokeLineJoin(@NotNull LineJoin strokeLineJoin)
    Sets the stroke line join.
    void
    setStrokeMiterLimit(float strokeMiterLimit)
    Sets the stroke miter limit.
    void
    setStrokeWidth(float strokeWith)
    Sets the stroke width.
    void
    setTransform(@NotNull Transform transform)
    Sets the transform.
    void
    startDraw(int x, int y, int width, int height)
    Indicates that a drawing session starts, on a given area.
    void
    startGroup(@NotNull String id, float x, float y, float width, float height, boolean clipContent)
    Indicates that the drawing of a group of items starts.
    void
    startItem(@NotNull String id)
    Indicates that the drawing of an item starts.

  • Method Details

    • setTransform

      void setTransform(@NotNull @NotNull Transform transform)
      Sets the transform.
      Parameters:
      transform - the transform.

    • getTransform

      @NotNull @NotNull Transform getTransform()
      Retrieves the current transform.
      Returns:
      the transform.

    • setStrokeColor

      void setStrokeColor(@NotNull @NotNull Color strokeColor)
      Sets the stroke color.
      Parameters:
      strokeColor - the stroke color.

    • setStrokeWidth

      void setStrokeWidth(float strokeWith)
      Sets the stroke width.
      Parameters:
      strokeWith - the stroke width (document coordinates in mm).

    • setStrokeLineCap

      void setStrokeLineCap(@NotNull @NotNull LineCap strokeLineCap)
      Sets the stroke line cap.
      Parameters:
      strokeLineCap - the stroke line cap.

    • setStrokeLineJoin

      void setStrokeLineJoin(@NotNull @NotNull LineJoin strokeLineJoin)
      Sets the stroke line join.
      Parameters:
      strokeLineJoin - the stroke line join.

    • setStrokeMiterLimit

      void setStrokeMiterLimit(float strokeMiterLimit)
      Sets the stroke miter limit.
      Parameters:
      strokeMiterLimit - the stroke miter limit (document coordinates in mm).

    • setStrokeDashArray

      void setStrokeDashArray(@Nullable @org.jetbrains.annotations.Nullable float[] strokeDashArray)
      Sets the pattern of dashes and gaps used to stroke paths.
      Parameters:
      strokeDashArray - the vector describing the dashes pattern (document coordinates in mm).

    • setStrokeDashOffset

      void setStrokeDashOffset(float strokeDashOffset)
      Sets the distance into the dash pattern to start the dash.
      Parameters:
      strokeDashOffset - the dash offset (document coordinates in mm).

    • setFillColor

      void setFillColor(@NotNull @NotNull Color fillColor)
      Sets the fill color.
      Parameters:
      fillColor - the fill color.

    • setFillRule

      void setFillRule(@NotNull @NotNull FillRule fillRule)
      Sets the fill rule.
      Parameters:
      fillRule - the fill rule.

    • setDropShadow

      void setDropShadow(float xOffset, float yOffset, float radius, @NotNull @NotNull Color color)
      Configures the drop shadow display.
      Parameters:
      xOffset - the drop shadow horizontal offset.
      yOffset - the drop shadow vertical offset.
      radius - the blur radius of the drop shadow.
      color - the color of the drop shadow.

    • setFontProperties

      void setFontProperties(@NotNull @NotNull String family, float lineHeight, float size, @NotNull @NotNull String style, @NotNull @NotNull String variant, int weight)
      Sets the font properties.
      Parameters:
      family - the font family.
      lineHeight - the font line height.
      size - the font size (document coordinates in mm).
      style - the font style.
      variant - the font variant.
      weight - the font weight.

    • startGroup

      void startGroup(@NotNull @NotNull String id, float x, float y, float width, float height, boolean clipContent)
      Indicates that the drawing of a group of items starts.
      Parameters:
      id - the identifier of the group.
      x - the x coordinate of the top left point of the group box (document coordinates in mm).
      y - the y coordinate of the top left point of the group box (document coordinates in mm).
      width - the width of the group box (document coordinates in mm).
      height - the height of the group box (document coordinates in mm).
      clipContent - true if the canvas should use the group box as the clipping region until corresponding endGroup(String), otherwise false.

    • endGroup

      void endGroup(@NotNull @NotNull String id)
      Indicates that the drawing of a group of items ends.
      Parameters:
      id - the identifier of the group.

    • startItem

      void startItem(@NotNull @NotNull String id)
      Indicates that the drawing of an item starts.
      Parameters:
      id - the identifier of the group.

    • endItem

      void endItem(@NotNull @NotNull String id)
      Indicates that the drawing of an item ends.
      Parameters:
      id - the identifier of the group.

    • createPath

      @NotNull @NotNull IPath createPath()
      Creates a new general path. The renderer will then send commands to this path, and it will be used in the call to drawPath(IPath).

      Note: the drawPath(IPath) method may be called with a path that was created by another instance of canvas, because the renderer maintains a cache of the paths that hold the visual representation of ink strokes.

      Returns:
      the newly created general path.

    • drawPath

      void drawPath(@NotNull @NotNull IPath path)
      Requests drawing of a path.
      Parameters:
      path - the path to draw (document coordinates in mm).

    • drawRectangle

      void drawRectangle(float x, float y, float width, float height)
      Requests drawing of a rectangle.
      Parameters:
      x - the x coordinate of the top left point (document coordinates in mm).
      y - the y coordinate of the top left point (document coordinates in mm).
      width - the width (document coordinates in mm).
      height - the height (document coordinates in mm).

    • drawLine

      void drawLine(float x1, float y1, float x2, float y2)
      Requests drawing of a line segment.
      Parameters:
      x1 - the x coordinate of the first point (document coordinates in mm).
      y1 - the y coordinate of the first point (document coordinates in mm).
      x2 - the x coordinate of the last point (document coordinates in mm).
      y2 - the y coordinate of the last point (document coordinates in mm).

    • drawObject

      void drawObject(@NotNull @NotNull String url, @NotNull @NotNull String mimeType, float x, float y, float width, float height)
      Requests drawing of an object.

      Note: the object should be transformed (translation and uniform scale) so that it fits centered in the specified viewport rectangle.

      Parameters:
      url - the URL of the object.
      mimeType - the Mime type associated with the object.
      x - the x coordinate of the top left point of the viewport rectangle (document coordinates in mm).
      y - the y coordinate of the top left point of the viewport rectangle (document coordinates in mm).
      width - the width of the viewport rectangle (document coordinates in mm).
      height - the height of the viewport rectangle (document coordinates in mm).

    • drawText

      void drawText(@NotNull @NotNull String label, float x, float y, float xmin, float ymin, float xmax, float ymax)
      Requests drawing of text.

      Note: the extent of the rendered text as given by xmin, ymin, xmax, and ymax is informative and should not be used for the actual rendering.

      Parameters:
      label - the label of the text to draw.
      x - the x coordinate of the position from where to draw the text (document coordinates in mm).
      y - the y coordinate of the position from where to draw the text (document coordinates in mm).
      xmin - minimal x coordinate of the rendered text (document coordinates in mm).
      ymin - minimal y coordinate of the rendered text (document coordinates in mm).
      xmax - maximal x coordinate of the rendered text (document coordinates in mm).
      ymax - maximal y coordinate of the rendered text (document coordinates in mm).

    • startDraw

      void startDraw(int x, int y, int width, int height)
      Indicates that a drawing session starts, on a given area. Provided area must be cleared within this call.
      Parameters:
      x - the x coordinate of the top left point of the drawing area.
      y - the y coordinate of the top left point of the drawing area.
      width - the width of the drawing area.
      height - the height of the drawing area.
      Since:
      1.4

    • endDraw

      void endDraw()
      Indicates that a drawing session ends.
      Since:
      1.4

    • blendOffscreen

      void blendOffscreen(int id, float src_x, float src_y, float src_width, float src_height, float dest_x, float dest_y, float dest_width, float dest_height, @NotNull @NotNull Color blend_color)
      Requests drawing of an offscreen surface (usually a bitmap).
      Parameters:
      id - the identifier of the surface.
      src_x - minimal x coordinate of the offscreen surface.
      src_y - minimal y coordinate of the offscreen surface.
      src_width - maximal x coordinate of the offscreen surface.
      src_height - maximal y coordinate of the offscreen surface.
      dest_x - minimal x coordinate where to draw this offscreen surface.
      dest_y - minimal y coordinate where to draw this offscreen surface.
      dest_width - maximal x coordinate where to draw this offscreen surface.
      dest_height - maximal y coordinate where to draw this offscreen surface.
      blend_color - The color used for the blending operation
      Since:
      1.4