/*
 *   Copyright 2009 Marco Martin <notmart@gmail.com>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library General Public License as
 *   published by the Free Software Foundation; either version 2, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this program; if not, write to the
 *   Free Software Foundation, Inc.,
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#ifndef PLASMA_WINDOWEFFECTS_H
#define PLASMA_WINDOWEFFECTS_H

#include <QtGui/QWidget>

#include <plasma/plasma.h>

/** @headerfile plasma/windoweffect.h <Plasma/WindowEffect> */

namespace Plasma
{

/**
 * Namespace for all window effects for Plasma/KWin interaction
 * @since 4.4
 */
namespace WindowEffects
{
    enum Effect {
        Slide = 1,
        WindowPreview = 2,
        PresentWindows = 3,
        PresentWindowsGroup = 4,
        HighlightWindows = 5,
        OverrideShadow = 6,
        BlurBehind = 7
    };

    /**
     * @return if an atom property is available
     *
     * @param effect the effect we want to check
     * @since 4.4
     */
    PLASMA_EXPORT bool isEffectAvailable(Effect effect);

    /**
     * Mark a window as sliding from screen edge
     *
     * @arg id of the window on which we want to apply the effect
     * @arg location edge of the screen from which we want the sliding effect.
     *               Desktop and Floating won't have effect.
     * @arg offset distance in pixels from the screen edge defined by location
     * @since 4.4
     */
    PLASMA_EXPORT void slideWindow(WId id, Plasma::Location location, int offset);

    /**
     * Mark a window as sliding from screen edge
     * This is an overloaded member function provided for convenience
     *
     * @arg widget QWidget corresponding to the top level window we want to animate
     * @arg location edge of the screen from which we want the sliding effect.
     *               Desktop and Floating won't have effect.
     * @since 4.4
     */
    PLASMA_EXPORT void slideWindow(QWidget *widget, Plasma::Location location);

    /**
     * @return dimension of all the windows passed as parameter
     *
     * @param ids all the windows we want the size
     * @since 4.4
     */
    PLASMA_EXPORT QList<QSize> windowSizes(const QList<WId> &ids);

    /**
     * Paint inside the window parent the thumbnails of the windows list in
     * the respective rectangles of the rects list
     *
     * @param parent window where we should paint
     * @param windows windows we want a thumbnail of.
     *                If it is empty any thumbnail will be deleted
     * @param rects rectangles in parent coordinates where to paint the window thumbnails.
     *              If it is empty any thumbnail will be deleted
     * @since 4.4
     */
    PLASMA_EXPORT void showWindowThumbnails(WId parent, const QList<WId> &windows = QList<WId>(), const QList<QRect> &rects = QList<QRect>());

    /**
    * Activate the Present Windows effect for the given groups of windows.
    *
    * @param controller The window which is the controller of this effect. The property
    *                   will be set on this window. It will be removed by the effect
    * @param ids all the windows which should be presented.
    * @since 4.4
    */
    PLASMA_EXPORT void presentWindows(WId controller, const QList<WId> &ids);

   /**
    * Activate the Present Windows effect for the windows of the given desktop.
    *
    * @param controller The window which is the controller of this effect. The property
    *                   will be set on this window. It will be removed by the effect
    * @param desktop The desktop whose windows should be presented. -1 for all desktops
    * @since 4.4
    */
    PLASMA_EXPORT void presentWindows(WId controller, int desktop = -1);

   /**
    * Highlight the selected windows, making all the others translucent
    *
    * @param controller The window which is the controller of this effect. The property
    *                   will be set on this window. It will be removed by the effect
    * @param ids all the windows which should be highlighted.
    * @since 4.4
    */
    PLASMA_EXPORT void highlightWindows(WId controller, const QList<WId> &ids);

    /**
     * Forbid te windowmanager to automatically generate a shadow for this window
     * @param window the window that won't have shadow
     * @param override true if it won't have shadow, false enables it again
     *
     * @since 4.4
     */
    PLASMA_EXPORT void overrideShadow(WId window, bool override);

    /**
     * Instructs the window manager to blur the background in the specified region
     * behind the given window. Passing a null region will enable the blur effect
     * for the whole window. The region is relative to the top-left corner of the
     * client area.
     *
     * Note that you will usually want to set the region to the shape of the window,
     * excluding any shadow or halo.
     *
     * @param window The window for which to enable the blur effect
     * @param enable Enable the effect if @a true, disable it if @false 
     * @param region The region within the window where the background will be blurred
     * @since 4.5
     */
    PLASMA_EXPORT void enableBlurBehind(WId window, bool enable = true, const QRegion &region = QRegion());
}

} // namespace Plasma

#endif