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 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
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 *   except in compliance with the License. You may obtain a copy of
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 */


module com {  module sun {  module star {  module rendering {

interface XCanvas;
interface XCanvasFont;
interface XBitmap;
interface XGraphicDevice;
interface XPolyPolygon2D;

/** Provides the basic graphical output operations for a canvas.<p>

    This interface is a simplified version of the XCanvas
    interface. It holds explicit state, i.e. the pen and fill color,
    the current transformation, clip and font are persistently
    remembered.<p>

    In contrast to the XCanvas interface, XSimpleCanvas
    does not distinguish between stroke and fill operations; instead,
    switching between stroke and fill (or taking both) works by
    setting appropriate pen and fill colors.<p>
 */
interface XSimpleCanvas: com::sun::star::uno::XInterface
{
    /** Select a font.<p>

        This method selects the specified font (or a close substitute)
        as the current font for text output.<p>

        @param sFontName
        The name of the font (like e.g. Arial)

        @param size
        The size of the font (note that this is not the usual points
        unit, but in the same coordinate system as the other rendering
        operations - usually, device pixel).

        @param bold
        When true, selected font is bold.

        @param italic
        When true, selected font is italic
     */
    void selectFont( [in] string sFontName, [in]double size, [in] boolean bold, [in] boolean italic );


    /** Sets the color used by line and text operations.<p>

        To disable stroking, simply set this color to something with
        zero alpha (i.e. fully transparent).<p>

        @param nsRgbaColor
        RGBA color tuple, interpreted in the sRGB color space.
     */
    void setPenColor( [in] com::sun::star::util::Color nsRgbaColor );


    /** Sets the fill color.<p>

        To disable filling, simply set this color to something with
        zero alpha (i.e. fully transparent).<p>

        @param nsRgbaColor
        RGBA color tuple, interpreted in the sRGB color space.
     */
    void setFillColor( [in] com::sun::star::util::Color nsRgbaColor );


    /** Sets the clip to the specified rectangle.<p>
     */
    void setRectClip( [in] ::com::sun::star::geometry::RealRectangle2D aRect );


    /** Set the current transform matrix.<p>
     */
    void setTransformation( [in] ::com::sun::star::geometry::AffineMatrix2D aTransform );


    /** Sets a single pixel on the canvas.<p>
     */
    void drawPixel( [in] ::com::sun::star::geometry::RealPoint2D aPoint );


    /** Draws a line on the canvas.<p>
     */
    void drawLine( [in] ::com::sun::star::geometry::RealPoint2D aStartPoint,
                   [in] ::com::sun::star::geometry::RealPoint2D aEndPoint );


    /** Draws a rectangle on the canvas.<p>
     */
    void drawRect( [in] ::com::sun::star::geometry::RealRectangle2D aRect );


    /** Draws a poly-polygon on the canvas.<p>
     */
    void drawPolyPolygon( [in] XPolyPolygon2D xPolyPolygon );


    /** Draws text on the canvas.<p>

        @param aText
        Text to render. The text color is the current pen color.

        @param aOutPos
        Output position of the text. This is the left or right edge,
        depending on nTextDirection. Output position is always
        relative to the font baseline.

        @param nTextDirection
        A value from the TextDirection collection,
        denoting the main writing direction for this string. The main
        writing direction determines the origin of the text output,
        i.e. the left edge for left-to-right and the right edge for
        right-to-left text.
     */
    void drawText( [in] StringContext aText,
                   [in] ::com::sun::star::geometry::RealPoint2D aOutPos,
                   [in] byte nTextDirection );


    /** Draws the bitmap on the canvas.<p>

        @param xBitmap
        Bitmap to render

        @param aLeftTop
        Left, top position of the bitmap on the destination canvas.
     */
    void drawBitmap( [in] XBitmap xBitmap,
                     [in] ::com::sun::star::geometry::RealPoint2D aLeftTop );


    /** Request the associated graphic device for this canvas.<p>

        A graphic device provides methods specific to the underlying
        output device capabilities, which are common for all canvases
        rendering to such a device. This includes device resolution,
        color space, or bitmap formats.<p>

        @return the associated XGraphicDevice.
     */
    XGraphicDevice getDevice();


    /** Query the underlying XCanvas.<p>

        @return the canvas interface this object is internally based
        on.
     */
    XCanvas getCanvas();


    /** Request the font metrics of the current font.<p>

        @return the font metrics of the currently selected font.
     */
    FontMetrics getFontMetrics();


    /** Retrieve currently selected font.<p>

        @return the font instance that's currently used for rendering
        text.
     */
    XCanvasFont getCurrentFont();


    /** Retrieve color currently used for lines.
     */
    com::sun::star::util::Color getCurrentPenColor();


    /** Retrieve color currently used for fills
     */
    com::sun::star::util::Color getCurrentFillColor();


    /** Retrieve current clip rect
     */
    com::sun::star::geometry::RealRectangle2D getCurrentClipRect();


    /** Retrieve current transformation matrix
     */
    com::sun::star::geometry::AffineMatrix2D getCurrentTransformation();


    /** Retrieve view state.<p>

        @return the view state, that would generate matching output,
        when rendering to an XCanvas instead.
     */
    ViewState getCurrentViewState();


    /** Retrieve render state.<p>

        @param bUseFillColor
        When true, the Color member of the RenderState is initialized
        with the current fill color; when false, the current pen color
        is used.

        @return the render state, that would generate matching output,
        when rendering to an XCanvas instead.
     */
    RenderState getCurrentRenderState( [in] boolean bUseFillColor );


};


}; }; }; };

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