/*
   (c) Copyright 2001-2009  The world wide DirectFB Open Source Community (directfb.org)
   (c) Copyright 2000-2004  Convergence (integrated media) GmbH

   All rights reserved.

   Written by Denis Oliver Kropp <dok@directfb.org>,
              Andreas Hundt <andi@fischlustig.de>,
              Sven Neumann <neo@directfb.org>,
              Ville Syrjälä <syrjala@sci.fi> and
              Claudio Ciccani <klan@users.sf.net>.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the
   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#ifndef __UNIQUE__INTERNAL_H__
#define __UNIQUE__INTERNAL_H__

#include <directfb.h>

#include <direct/list.h>

#include <fusion/object.h>
#include <fusion/vector.h>

#include <core/coretypes.h>
#include <core/windows.h>

#include <unique/context.h>
#include <unique/decoration.h>
#include <unique/device.h>
#include <unique/input_events.h>
#include <unique/stret.h>
#include <unique/types.h>
#include <unique/window.h>


#define UNIQUE_WM_ABI_VERSION 12


extern const StretRegionClass unique_root_region_class;
extern const StretRegionClass unique_frame_region_class;
extern const StretRegionClass unique_window_region_class;
extern const StretRegionClass unique_foo_region_class;

extern const UniqueDeviceClass unique_pointer_device_class;
extern const UniqueDeviceClass unique_wheel_device_class;
extern const UniqueDeviceClass unique_keyboard_device_class;

typedef enum {
     URCI_ROOT,
     URCI_FRAME,
     URCI_WINDOW,
     URCI_FOO,

     _URCI_NUM
} UniqueRegionClassIndex;

typedef enum {
     UFI_N,
     UFI_NE,
     UFI_E,
     UFI_SE,
     UFI_S,
     UFI_SW,
     UFI_W,
     UFI_NW
} UniqueFooIndex;

typedef ReactionResult (*UniqueWMContextNotify)( WMData                          *data,
                                                 const UniqueContextNotification *notification,
                                                 void                            *ctx );

typedef ReactionResult (*UniqueWMWindowNotify) ( WMData                          *data,
                                                 const UniqueWindowNotification  *notification,
                                                 void                            *ctx );


struct __UniQuE_WMData {
     int                           module_abi;

     CoreDFB                      *core;
     FusionWorld                  *world;

     WMShared                     *shared;

     UniqueWMContextNotify         context_notify;
     UniqueWMWindowNotify          window_notify;
};

struct __UniQuE_WMShared {
     int                           magic;

     FusionObjectPool             *context_pool;
     FusionObjectPool             *decoration_pool;
     FusionObjectPool             *window_pool;

     StretRegionClassID            region_classes[_URCI_NUM];
     UniqueDeviceClassID           device_classes[_UDCI_NUM];

     int                           device_listener;    /* index of the registered global */

     DFBInsets                     insets;

     DFBRectangle                  foo_rects[8];

     CoreSurface                  *foo_surface;
};


typedef enum {
     UNRL_DESKTOP,       /* Icons, redirected fullscreen apps (force-desktop) */
     UNRL_USER,          /* User windows (all currently available stacking classes) */
     UNRL_SYSTEM,        /* Dock/Panel, Glass, Expos?, Clipboard, Virtual Keyboard, IMs */
     UNRL_CURSOR,        /* Cursor shape and attached objects, e.g. Drag'N'Drop */
     UNRL_SCREEN,        /* Display Locking, Screensaver */

     _UNRL_NUM
} UniqueRootLevel;

typedef enum {
     UNFL_BACKGROUND,    /* Background for blended content, effects, decorations */
     UNFL_CONTENT,       /* The actual DirectFB Window, i.e. its content */
     UNFL_FOREGROUND,    /* Decorations, effects, any other content overlay */

     _UNFL_NUM
} UniqueFrameLevel;

typedef struct {
     DirectLink                    link;

     DFBInputDeviceKeySymbol       symbol;
     DFBInputDeviceModifierMask    modifiers;

     UniqueWindow                 *owner;
} GrabbedKey;


struct __UniQuE_UniqueContext {
     FusionObject             object;

     int                      magic;

     CoreWindowStack         *stack;
     WMShared                *shared;

     CoreLayerRegion         *region;
     CoreSurface             *surface;

     DFBDisplayLayerID        layer_id;

     bool                     active;

     DFBColor                 color;

     int                      width;
     int                      height;

     StretRegion             *root;

     FusionVector             windows;


     UniqueInputSwitch       *input_switch;

     UniqueDevice            *devices[_UDCI_NUM];

     GlobalReaction           cursor_reaction;

     FusionSHMPoolShared     *shmpool;

     UniqueInputChannel      *foo_channel;

     CoreSurface             *cursor_bs;          /* backing store for region under cursor */
     bool                     cursor_bs_valid;
     DFBRegion                cursor_region;
     bool                     cursor_drawn;
};

struct __UniQuE_UniqueWindow {
     FusionObject             object;

     int                      magic;

     CoreWindow              *window;
     UniqueContext           *context;
     WMShared                *shared;

     CoreSurface             *surface;

     UniqueInputChannel      *channel;
     GlobalReaction           channel_reaction;

     DirectLink              *filters;

     DFBWindowCapabilities    caps;

     UniqueWindowFlags        flags;

     StretRegion             *frame;
     StretRegion             *region;
     StretRegion             *foos[8];
     DFBPoint                 foo_motion;

     DFBInsets                insets;

     DFBRectangle             bounds;        /* absolute bounds of the content */
     DFBRectangle             full;          /* absolute bounds of the full frame */

     int                      opacity;       /* global alpha factor */

     DFBWindowStackingClass   stacking;      /* level boundaries */
     int                      priority;      /* derived from stacking class */

     DFBWindowOptions         options;       /* flags for appearance/behaviour */
     DFBWindowEventType       events;        /* mask of enabled events */

     u32                      color_key;     /* transparent pixel */
     DFBRegion                opaque;        /* region of the window forced to be opaque */
};

struct __UniQuE_UniqueDecoration {
     FusionObject             object;

     int                      magic;

     UniqueWindow            *window;
     UniqueContext           *context;

     UniqueDecorationFlags    flags;
};

struct __UniQuE_UniqueDecorationItem {
     const UniqueLayout      *layout;        

     DFBPoint                 pos;           /* current offset from window origin */
     DFBDimension             size;          /* current dimensions */
};

struct __UniQuE_StretRegion {
     int                      magic;

     StretRegion             *parent;        /* Is NULL for the root region. */

     int                      level;         /* Level within the parent. */
     int                      index;         /* Index within the level. */

     int                      levels;        /* Number of levels provided. */
     FusionVector            *children;      /* Children of each level. */

     StretRegionFlags         flags;         /* Control appearance and activity. */

     DFBRegion                bounds;        /* Relative to its parent. */

     StretRegionClassID       clazz;         /* Region class (implementation) used for rendering etc. */

     void                    *data;          /* Optional private data of region class. */
     unsigned long            arg;           /* Optional argument for region class instance. */

     FusionSHMPoolShared     *shmpool;
};

struct __UniQuE_UniqueDevice {
     int                      magic;

     UniqueContext           *context;

     UniqueDeviceClassID      clazz;         /* Device class (implementation) used for processing etc. */

     void                    *data;          /* Optional private data of device class. */
     void                    *ctx;           /* Optional context for device class instance. */

     FusionReactor           *reactor;       /* UniqueInputEvent deployment */

     DirectLink              *connections;   /* CoreInputDevice connections */
};


struct __UniQuE_UniqueInputFilter {
     DirectLink               link;

     int                      magic;

     UniqueDeviceClassIndex   index;

     UniqueInputChannel      *channel;

     UniqueInputEvent         filter;
};

typedef struct {
     UniqueDeviceClassID      clazz;

     UniqueInputChannel      *current;

     UniqueInputChannel      *normal;
     UniqueInputChannel      *fixed;

     UniqueInputChannel      *implicit;

     DirectLink              *filters;
} UniqueInputTarget;


struct __UniQuE_UniqueInputSwitch {
     int                      magic;

     UniqueContext           *context;

     DirectLink              *connections;  /* UniqueDevice connections */

     int                      x;
     int                      y;

     UniqueInputTarget        targets[_UDCI_NUM];
};

struct __UniQuE_UniqueInputChannel {
     int                      magic;

     UniqueContext           *context;

     FusionReactor           *reactor;      /* UniqueInputEvent arrival */
};


DFBResult unique_wm_module_init  ( CoreDFB  *core,
                                   WMData   *data,
                                   WMShared *shared,
                                   bool      master );

void      unique_wm_module_deinit( WMData   *data,
                                   WMShared *shared,
                                   bool      master,
                                   bool      emergency );

UniqueContext    *unique_wm_create_context( void );
UniqueDecoration *unique_wm_create_decoration( void );
UniqueWindow     *unique_wm_create_window( void );

/* HACK: temporary, will move into cursor class */
void unique_draw_cursor( CoreWindowStack *stack, UniqueContext *context, CardState *state, DFBRegion *region );


/* global reactions */
ReactionResult _unique_device_listener              ( const void *msg_data,
                                                      void       *ctx );

ReactionResult _unique_wm_module_context_listener   ( const void *msg_data,
                                                      void       *ctx );

ReactionResult _unique_wm_module_window_listener    ( const void *msg_data,
                                                      void       *ctx );

ReactionResult _unique_cursor_device_listener       ( const void *msg_data,
                                                      void       *ctx );

ReactionResult _unique_input_switch_device_listener ( const void *msg_data,
                                                      void       *ctx );

ReactionResult _unique_window_input_channel_listener( const void *msg_data,
                                                      void       *ctx );

#endif