user.h 11.6 KB
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/*
 * Wine server USER definitions
 *
 * Copyright (C) 2001 Alexandre Julliard
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 *
 * 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 2.1 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
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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 */

#ifndef __WINE_SERVER_USER_H
#define __WINE_SERVER_USER_H

#include "wine/server_protocol.h"

struct thread;
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struct region;
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struct window;
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struct msg_queue;
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struct hook_table;
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struct window_class;
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struct atom_table;
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struct clipboard;
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enum user_object
{
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    USER_WINDOW = 1,
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    USER_HOOK,
    USER_CLIENT  /* arbitrary client handle */
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};

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#define DESKTOP_ATOM  ((atom_t)32769)

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struct winstation
{
    struct object      obj;                /* object header */
    unsigned int       flags;              /* winstation flags */
    struct list        entry;              /* entry in global winstation list */
    struct list        desktops;           /* list of desktops of this winstation */
    struct clipboard  *clipboard;          /* clipboard information */
    struct atom_table *atom_table;         /* global atom table */
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    struct namespace  *desktop_names;      /* namespace for desktops of this winstation */
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};

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struct global_cursor
{
    int                  x;                /* cursor position */
    int                  y;
    rectangle_t          clip;             /* cursor clip rectangle */
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    unsigned int         clip_msg;         /* message to post for cursor clip changes */
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    unsigned int         last_change;      /* time of last position change */
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    user_handle_t        win;              /* window that contains the cursor */
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};

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struct desktop
{
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    struct object        obj;              /* object header */
    unsigned int         flags;            /* desktop flags */
    struct winstation   *winstation;       /* winstation this desktop belongs to */
    struct list          entry;            /* entry in winstation list of desktops */
    struct window       *top_window;       /* desktop window for this desktop */
    struct window       *msg_window;       /* HWND_MESSAGE top window */
    struct hook_table   *global_hooks;     /* table of global hooks on this desktop */
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    struct list          hotkeys;          /* list of registered hotkeys */
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    struct timeout_user *close_timeout;    /* timeout before closing the desktop */
    struct thread_input *foreground_input; /* thread input of foreground thread */
    unsigned int         users;            /* processes and threads using this desktop */
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    struct global_cursor cursor;           /* global cursor information */
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    unsigned char        keystate[256];    /* asynchronous key state */
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};

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/* user handles functions */

extern user_handle_t alloc_user_handle( void *ptr, enum user_object type );
extern void *get_user_object( user_handle_t handle, enum user_object type );
extern void *get_user_object_handle( user_handle_t *handle, enum user_object type );
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extern user_handle_t get_user_full_handle( user_handle_t handle );
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extern void *free_user_handle( user_handle_t handle );
extern void *next_user_handle( user_handle_t *handle, enum user_object type );
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extern void free_process_user_handles( struct process *process );
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/* clipboard functions */

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extern void cleanup_clipboard_window( struct desktop *desktop, user_handle_t window );
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extern void cleanup_clipboard_thread( struct thread *thread );

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/* hook functions */

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extern void remove_thread_hooks( struct thread *thread );
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extern unsigned int get_active_hooks(void);
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extern struct thread *get_first_global_hook( int id );
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/* queue functions */

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extern void free_msg_queue( struct thread *thread );
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extern struct hook_table *get_queue_hooks( struct thread *thread );
extern void set_queue_hooks( struct thread *thread, struct hook_table *hooks );
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extern void inc_queue_paint_count( struct thread *thread, int incr );
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extern void queue_cleanup_window( struct thread *thread, user_handle_t win );
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extern int init_thread_queue( struct thread *thread );
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extern int attach_thread_input( struct thread *thread_from, struct thread *thread_to );
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extern void detach_thread_input( struct thread *thread_from );
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extern void post_message( user_handle_t win, unsigned int message,
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                          lparam_t wparam, lparam_t lparam );
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extern void send_notify_message( user_handle_t win, unsigned int message,
                                 lparam_t wparam, lparam_t lparam );
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extern void post_win_event( struct thread *thread, unsigned int event,
                            user_handle_t win, unsigned int object_id,
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                            unsigned int child_id, client_ptr_t proc,
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                            const WCHAR *module, data_size_t module_size,
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                            user_handle_t handle );
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extern void free_hotkeys( struct desktop *desktop, user_handle_t window );
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/* region functions */

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extern struct region *create_empty_region(void);
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extern struct region *create_region_from_req_data( const void *data, data_size_t size );
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extern void free_region( struct region *region );
extern void set_region_rect( struct region *region, const rectangle_t *rect );
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extern rectangle_t *get_region_data( const struct region *region, data_size_t max_size,
                                     data_size_t *total_size );
extern rectangle_t *get_region_data_and_free( struct region *region, data_size_t max_size,
                                              data_size_t *total_size );
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extern int is_region_empty( const struct region *region );
extern void get_region_extents( const struct region *region, rectangle_t *rect );
extern void offset_region( struct region *region, int x, int y );
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extern void mirror_region( const rectangle_t *client_rect, struct region *region );
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extern void scale_region( struct region *region, unsigned int dpi_from, unsigned int dpi_to );
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extern struct region *copy_region( struct region *dst, const struct region *src );
extern struct region *intersect_region( struct region *dst, const struct region *src1,
                                        const struct region *src2 );
extern struct region *subtract_region( struct region *dst, const struct region *src1,
                                       const struct region *src2 );
extern struct region *union_region( struct region *dst, const struct region *src1,
                                    const struct region *src2 );
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extern struct region *xor_region( struct region *dst, const struct region *src1,
                                  const struct region *src2 );
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extern int point_in_region( struct region *region, int x, int y );
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extern int rect_in_region( struct region *region, const rectangle_t *rect );
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/* window functions */

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extern struct process *get_top_window_owner( struct desktop *desktop );
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extern void get_top_window_rectangle( struct desktop *desktop, rectangle_t *rect );
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extern void post_desktop_message( struct desktop *desktop, unsigned int message,
                                  lparam_t wparam, lparam_t lparam );
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extern void destroy_window( struct window *win );
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extern void destroy_thread_windows( struct thread *thread );
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extern int is_child_window( user_handle_t parent, user_handle_t child );
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extern int is_valid_foreground_window( user_handle_t window );
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extern int is_window_visible( user_handle_t window );
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extern int is_window_transparent( user_handle_t window );
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extern int make_window_active( user_handle_t window );
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extern struct thread *get_window_thread( user_handle_t handle );
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extern user_handle_t shallow_window_from_point( struct desktop *desktop, int x, int y );
extern struct thread *window_thread_from_point( user_handle_t scope, int x, int y );
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extern user_handle_t find_window_to_repaint( user_handle_t parent, struct thread *thread );
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extern struct window_class *get_window_class( user_handle_t window );

/* window class functions */

extern void destroy_process_classes( struct process *process );
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extern struct window_class *grab_class( struct process *process, atom_t atom,
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                                        mod_handle_t instance, int *extra_bytes );
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extern void release_class( struct window_class *class );
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extern int is_desktop_class( struct window_class *class );
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extern int is_hwnd_message_class( struct window_class *class );
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extern atom_t get_class_atom( struct window_class *class );
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extern client_ptr_t get_class_client_ptr( struct window_class *class );
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/* windows station functions */

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extern struct desktop *get_desktop_obj( struct process *process, obj_handle_t handle, unsigned int access );
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extern struct winstation *get_process_winstation( struct process *process, unsigned int access );
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extern struct desktop *get_thread_desktop( struct thread *thread, unsigned int access );
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extern void connect_process_winstation( struct process *process, struct thread *parent_thread,
                                        struct process *parent_process );
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extern void set_process_default_desktop( struct process *process, struct desktop *desktop,
                                         obj_handle_t handle );
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extern void close_process_desktop( struct process *process );
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extern void close_thread_desktop( struct thread *thread );

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static inline int is_rect_empty( const rectangle_t *rect )
{
    return (rect->left >= rect->right || rect->top >= rect->bottom);
}

static inline int point_in_rect( const rectangle_t *rect, int x, int y )
{
    return (x >= rect->left && x < rect->right && y >= rect->top && y < rect->bottom);
}

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static inline int scale_dpi( int val, unsigned int dpi_from, unsigned int dpi_to )
{
    if (val >= 0) return (val * dpi_to + (dpi_from / 2)) / dpi_from;
    return (val * dpi_to - (dpi_from / 2)) / dpi_from;
}

static inline void scale_dpi_rect( rectangle_t *rect, unsigned int dpi_from, unsigned int dpi_to )
{
    rect->left   = scale_dpi( rect->left, dpi_from, dpi_to );
    rect->top    = scale_dpi( rect->top, dpi_from, dpi_to );
    rect->right  = scale_dpi( rect->right, dpi_from, dpi_to );
    rect->bottom = scale_dpi( rect->bottom, dpi_from, dpi_to );
}

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/* offset the coordinates of a rectangle */
static inline void offset_rect( rectangle_t *rect, int offset_x, int offset_y )
{
    rect->left   += offset_x;
    rect->top    += offset_y;
    rect->right  += offset_x;
    rect->bottom += offset_y;
}

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/* mirror a rectangle respective to the window client area */
static inline void mirror_rect( const rectangle_t *client_rect, rectangle_t *rect )
{
    int width = client_rect->right - client_rect->left;
    int tmp = rect->left;
    rect->left = width - rect->right;
    rect->right = width - tmp;
}

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/* compute the intersection of two rectangles; return 0 if the result is empty */
static inline int intersect_rect( rectangle_t *dst, const rectangle_t *src1, const rectangle_t *src2 )
{
    dst->left   = max( src1->left, src2->left );
    dst->top    = max( src1->top, src2->top );
    dst->right  = min( src1->right, src2->right );
    dst->bottom = min( src1->bottom, src2->bottom );
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    return !is_rect_empty( dst );
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}

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/* validate a window handle and return the full handle */
static inline user_handle_t get_valid_window_handle( user_handle_t win )
{
    if (get_user_object_handle( &win, USER_WINDOW )) return win;
    set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
    return 0;
}

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#endif  /* __WINE_SERVER_USER_H */