xref: /aoo42x/main/offapi/com/sun/star/rendering/XSimpleCanvas.idl (revision d1766043)

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 * Licensed to the Apache Software Foundation (ASF) under one
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 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
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 * KIND, either express or implied.  See the License for the
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#ifndef __com_sun_star_rendering_XSimpleCanvas_idl__
#define __com_sun_star_rendering_XSimpleCanvas_idl__

#ifndef __com_sun_star_util_Color_idl__
#include <com/sun/star/util/Color.idl>
#endif
#ifndef __com_sun_star_geometry_RealPoint2D_idl__
#include <com/sun/star/geometry/RealPoint2D.idl>
#endif
#ifndef __com_sun_star_geometry_RealRectangle2D_idl__
#include <com/sun/star/geometry/RealRectangle2D.idl>
#endif
#ifndef __com_sun_star_geometry_AffineMatrix2D_idl__
#include <com/sun/star/geometry/AffineMatrix2D.idl>
#endif
#ifndef __com_sun_star_rendering_StringContext_idl__
#include <com/sun/star/rendering/StringContext.idl>
#endif
#ifndef __com_sun_star_rendering_ViewState_idl__
#include <com/sun/star/rendering/ViewState.idl>
#endif
#ifndef __com_sun_star_rendering_RenderState_idl__
#include <com/sun/star/rendering/RenderState.idl>
#endif
#ifndef __com_sun_star_rendering_FontMetrics_idl__
#include <com/sun/star/rendering/FontMetrics.idl>
#endif

//=============================================================================

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 <type>XCanvas</type>
    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 <type>XCanvas</type> 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 <type>TextDirection</type> 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 <type>XGraphicDevice</type>.
     */
    XGraphicDevice getDevice();

    //-------------------------------------------------------------------------

    /** Query the underlying <type>XCanvas</type>.<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 );

    //-------------------------------------------------------------------------

};

//=============================================================================

}; }; }; };

#endif