xref: /trunk/main/offapi/com/sun/star/rendering/XColorSpace.idl (revision b63233d8)

/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/


#ifndef __com_sun_star_rendering_XColorSpace_idl__
#define __com_sun_star_rendering_XColorSpace_idl__

#ifndef __com_sun_star_uno_XInterface_idl__
#include <com/sun/star/uno/XInterface.idl>
#endif
#ifndef __com_sun_star_lang_IllegalArgumentException_idl__
#include <com/sun/star/lang/IllegalArgumentException.idl>
#endif
#ifndef __com_sun_star_beans_PropertyValue_idl__
#include <com/sun/star/beans/PropertyValue.idl>
#endif
#ifndef __com_sun_star_rendering_ColorProfile_idl__
#include <com/sun/star/rendering/ColorProfile.idl>
#endif
#ifndef __com_sun_star_rendering_ColorComponent_idl__
#include <com/sun/star/rendering/ColorComponent.idl>
#endif
#ifndef __com_sun_star_rendering_RGBColor_idl__
#include <com/sun/star/rendering/RGBColor.idl>
#endif
#ifndef __com_sun_star_rendering_ARGBColor_idl__
#include <com/sun/star/rendering/ARGBColor.idl>
#endif

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

/** Information how to interpret certain color data.<p>

    This interface encapsulates all information that is necessary to
    interpret color data, by defining a describing color space, like
    for example CMYK or sRGB. You can either convert between this and
    an arbitrary other colorspace, or into the standard RGB or ARGB
    formats (because those are so overwhelmingly common in computer
    graphics).<p>

    All canvas interfaces standardize to sequences of IEEE doubles for
    color representation. As this is overly verbose when used for
    bitmap data, derived interfaces exist,
    e.g. <type>XIntegerBitmapColorSpace</type>, which use sequences of
    integers for color representation.<p>
 */
published interface XColorSpace
{
    /** Query type of this color space.<p>

        @return a value from the <type>ColorSpaceType</type> constant
        group.
     */
    byte                     getType();

    /** Query the kind for each color component.<p>

        Color space components tend to correspond to physical
        attributes like the amount of one specific colorant contained
        in the final output color. This method returns a sequence of
        tags, specifying for each component of a color value, to what
        color attribute (if any) it corresponds. The values must be
        one of the <type>ColorComponentTag</type> constants.<p>

        At the same time, the number of elements in this sequence
        corresponds to the number of color channels for this color
        space.<p>

        @example For the standard RGB color space, ComponentTags
        consists of three elements, containing RGB_RED, RGB_GREEN and
        RGB_BLUE tags, respectively
     */
    sequence<byte>           getComponentTags();

    /** Query rendering intent of this color space.<p>

        @return a value from the <type>RenderingIntent</type> constant
        group.
     */
    byte                     getRenderingIntent();

    /** Query various optional properties from the color space.<p>

        If this color space has an ICC color profile, the sequence
        contains an element named ICCProfile. Some color spaces also
        have properties Gamma, Whitepoint and Blackpoint. Background
        information for these is available <a
        href="http://en.wikipedia.org/wiki/Color_temperature">here</a>.
     */
    sequence< ::com::sun::star::beans::PropertyValue > getProperties();


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

    /** Convert to color of another color space.<p>

        @param deviceColor Sequence of device color components. Is
        permitted to contain more than one device color element,
        therefore, batch conversion of multiple color values is
        possible.

        @return the corresponding sequence of device colors in the
        target color space (e.g. <type>sequence<double></type> or
        <type>sequence<byte></type>).

        @throws a
        <type>com::sun::star::lang::IllegalArgumentException</type>,
        if the input sequence does not match the device color format
        (e.g. if the number of components is wrong)
     */
    sequence<ColorComponent> convertColorSpace( [in] sequence<ColorComponent> deviceColor, [in] XColorSpace targetColorSpace )
        raises (com::sun::star::lang::IllegalArgumentException);

    /** Convert color value in this color space to sRGB color values.<p>

        Any information not representable in the <type>RGBColor</type>
        struct is discarded during the conversion. This includes alpha
        information.

        @param deviceColor Sequence of device color components. Is
        permitted to contain more than one device color element,
        therefore, batch conversion of multiple color values is
        possible.

        @return the corresponding sequence of colors in the sRGB color
        space.

        @throws a
        <type>com::sun::star::lang::IllegalArgumentException</type>,
        if the input sequence does not match the device color format.

        @see <member>convertToARGB</member>
     */
    sequence<RGBColor>       convertToRGB( [in] sequence<ColorComponent> deviceColor )
        raises (com::sun::star::lang::IllegalArgumentException);

    /** Convert color value in this color space to sRGB color values, with linear alpha.<p>

        If the given input color does not carry alpha information, an
        alpha value of 1.0 (fully opaque) is assumed.

        @param deviceColor Sequence of device color components. Is
        permitted to contain more than one device color element,
        therefore, batch conversion of multiple color values is
        possible.

        @return the corresponding sequence of colors in the sRGB color
        space.

        @throws a
        <type>com::sun::star::lang::IllegalArgumentException</type>,
        if the input sequence does not match the device color format.
     */
    sequence<ARGBColor>      convertToARGB( [in] sequence<ColorComponent> deviceColor )
        raises (com::sun::star::lang::IllegalArgumentException);

    /** Convert color value in this color space to premultiplied sRGB
       color values, with linear alpha.<p>

        If the given input color does not carry alpha information, an
        alpha value of 1.0 (fully opaque) is assumed. The resulting
        individual RGB color values are premultiplied by the alpha
        value (e.g. if alpha is 0.5, each color value has only half of
        the original intensity).<p>

        @param deviceColor Sequence of device color components. Is
        permitted to contain more than one device color element,
        therefore, batch conversion of multiple color values is
        possible.

        @return the corresponding sequence of colors in the sRGB color
        space.

        @throws a
        <type>com::sun::star::lang::IllegalArgumentException</type>,
        if the input sequence does not match the device color format.
     */
    sequence<ARGBColor>      convertToPARGB( [in] sequence<ColorComponent> deviceColor )
        raises (com::sun::star::lang::IllegalArgumentException);

    /** Convert sRGB color to a representation in this color space.<p>

        If this color space conveys alpha information, it is assumed
        be fully opaque for the given rgb color value.

        @param deviceColor Sequence of sRGB color components. Is
        permitted to contain more than one color element, therefore,
        batch conversion of multiple color values is possible.

        @return the corresponding sequence of device colors.

        @throws a
        <type>com::sun::star::lang::IllegalArgumentException</type>,
        if the input sequence does not match the device color format.
     */
    sequence<ColorComponent> convertFromRGB( [in] sequence<RGBColor> rgbColor )
        raises (com::sun::star::lang::IllegalArgumentException);

    /** Convert sRGB color with linear alpha into this color space.<p>

        If this color space does not convey alpha information, the
        specified alpha value is silently ignored.

        @param rgbColor Sequence of sRGB color components. Is
        permitted to contain more than one color element, therefore,
        batch conversion of multiple color values is possible.

        @return the corresponding sequence of device colors.

        @throws a
        <type>com::sun::star::lang::IllegalArgumentException</type>,
        if the input sequence does not match the device color format.
     */
    sequence<ColorComponent> convertFromARGB( [in] sequence<ARGBColor> rgbColor )
        raises (com::sun::star::lang::IllegalArgumentException);

    /** Convert premultiplied sRGB color with linear alpha into this
       color space.<p>

        If this color space does not convey alpha information, the
        specified alpha value is silently ignored.

        @param rgbColor Sequence of sRGB color components. Is
        permitted to contain more than one color element, therefore,
        batch conversion of multiple color values is possible. The
        individual color values are assumed to be premultiplied by the
        alpha value.

        @return the corresponding sequence of device colors.

        @throws a
        <type>com::sun::star::lang::IllegalArgumentException</type>,
        if the input sequence does not match the device color format.
     */
    sequence<ColorComponent> convertFromPARGB( [in] sequence<ARGBColor> rgbColor )
        raises (com::sun::star::lang::IllegalArgumentException);
};

}; }; }; };

#endif