server/user.h

   1 /*
   2  * Wine server USER definitions
   3  *
   4  * Copyright (C) 2001 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #ifndef __WINE_SERVER_USER_H
  22 #define __WINE_SERVER_USER_H
  23
  24 #include "wine/server_protocol.h"
  25
  26 struct thread;
  27 struct region;
  28 struct window;
  29 struct msg_queue;
  30 struct hook_table;
  31 struct window_class;
  32 struct atom_table;
  33 struct clipboard;
  34
  35 enum user_object
  36 {
  37     USER_WINDOW = 1,
  38     USER_HOOK,
  39     USER_CLIENT  /* arbitrary client handle */
  40 };
  41
  42 #define DESKTOP_ATOM  ((atom_t)32769)
  43
  44 struct winstation
  45 {
  46     struct object      obj;                /* object header */
  47     unsigned int       flags;              /* winstation flags */
  48     struct list        entry;              /* entry in global winstation list */
  49     struct list        desktops;           /* list of desktops of this winstation */
  50     struct clipboard  *clipboard;          /* clipboard information */
  51     struct atom_table *atom_table;         /* global atom table */
  52     struct namespace  *desktop_names;      /* namespace for desktops of this winstation */
  53 };
  54
  55 struct global_cursor
  56 {
  57     int                  x;                /* cursor position */
  58     int                  y;
  59     rectangle_t          clip;             /* cursor clip rectangle */
  60     unsigned int         clip_msg;         /* message to post for cursor clip changes */
  61     unsigned int         last_change;      /* time of last position change */
  62     user_handle_t        win;              /* window that contains the cursor */
  63 };
  64
  65 struct desktop
  66 {
  67     struct object        obj;              /* object header */
  68     unsigned int         flags;            /* desktop flags */
  69     struct winstation   *winstation;       /* winstation this desktop belongs to */
  70     struct list          entry;            /* entry in winstation list of desktops */
  71     struct window       *top_window;       /* desktop window for this desktop */
  72     struct window       *msg_window;       /* HWND_MESSAGE top window */
  73     struct hook_table   *global_hooks;     /* table of global hooks on this desktop */
  74     struct list          hotkeys;          /* list of registered hotkeys */
  75     struct timeout_user *close_timeout;    /* timeout before closing the desktop */
  76     struct thread_input *foreground_input; /* thread input of foreground thread */
  77     unsigned int         users;            /* processes and threads using this desktop */
  78     struct global_cursor cursor;           /* global cursor information */
  79     unsigned char        keystate[256];    /* asynchronous key state */
  80 };
  81
  82 /* user handles functions */
  83
  84 extern user_handle_t alloc_user_handle( void *ptr, enum user_object type );
  85 extern void *get_user_object( user_handle_t handle, enum user_object type );
  86 extern void *get_user_object_handle( user_handle_t *handle, enum user_object type );
  87 extern user_handle_t get_user_full_handle( user_handle_t handle );
  88 extern void *free_user_handle( user_handle_t handle );
  89 extern void *next_user_handle( user_handle_t *handle, enum user_object type );
  90 extern void free_process_user_handles( struct process *process );
  91
  92 /* clipboard functions */
  93
  94 extern void cleanup_clipboard_window( struct desktop *desktop, user_handle_t window );
  95 extern void cleanup_clipboard_thread( struct thread *thread );
  96
  97 /* hook functions */
  98
  99 extern void remove_thread_hooks( struct thread *thread );
 100 extern unsigned int get_active_hooks(void);
 101 extern struct thread *get_first_global_hook( int id );
 102
 103 /* queue functions */
 104
 105 extern void free_msg_queue( struct thread *thread );
 106 extern struct hook_table *get_queue_hooks( struct thread *thread );
 107 extern void set_queue_hooks( struct thread *thread, struct hook_table *hooks );
 108 extern void inc_queue_paint_count( struct thread *thread, int incr );
 109 extern void queue_cleanup_window( struct thread *thread, user_handle_t win );
 110 extern int init_thread_queue( struct thread *thread );
 111 extern int attach_thread_input( struct thread *thread_from, struct thread *thread_to );
 112 extern void detach_thread_input( struct thread *thread_from );
 113 extern void post_message( user_handle_t win, unsigned int message,
 114                           lparam_t wparam, lparam_t lparam );
 115 extern void send_notify_message( user_handle_t win, unsigned int message,
 116                                  lparam_t wparam, lparam_t lparam );
 117 extern void post_win_event( struct thread *thread, unsigned int event,
 118                             user_handle_t win, unsigned int object_id,
 119                             unsigned int child_id, client_ptr_t proc,
 120                             const WCHAR *module, data_size_t module_size,
 121                             user_handle_t handle );
 122 extern void free_hotkeys( struct desktop *desktop, user_handle_t window );
 123
 124 /* region functions */
 125
 126 extern struct region *create_empty_region(void);
 127 extern struct region *create_region_from_req_data( const void *data, data_size_t size );
 128 extern void free_region( struct region *region );
 129 extern void set_region_rect( struct region *region, const rectangle_t *rect );
 130 extern rectangle_t *get_region_data( const struct region *region, data_size_t max_size,
 131                                      data_size_t *total_size );
 132 extern rectangle_t *get_region_data_and_free( struct region *region, data_size_t max_size,
 133                                               data_size_t *total_size );
 134 extern int is_region_empty( const struct region *region );
 135 extern int is_region_equal( const struct region *region1, const struct region *region2 );
 136 extern void get_region_extents( const struct region *region, rectangle_t *rect );
 137 extern void offset_region( struct region *region, int x, int y );
 138 extern void mirror_region( const rectangle_t *client_rect, struct region *region );
 139 extern void scale_region( struct region *region, unsigned int dpi_from, unsigned int dpi_to );
 140 extern struct region *copy_region( struct region *dst, const struct region *src );
 141 extern struct region *intersect_region( struct region *dst, const struct region *src1,
 142                                         const struct region *src2 );
 143 extern struct region *subtract_region( struct region *dst, const struct region *src1,
 144                                        const struct region *src2 );
 145 extern struct region *union_region( struct region *dst, const struct region *src1,
 146                                     const struct region *src2 );
 147 extern struct region *xor_region( struct region *dst, const struct region *src1,
 148                                   const struct region *src2 );
 149 extern int point_in_region( struct region *region, int x, int y );
 150 extern int rect_in_region( struct region *region, const rectangle_t *rect );
 151
 152 /* window functions */
 153
 154 extern struct process *get_top_window_owner( struct desktop *desktop );
 155 extern void get_top_window_rectangle( struct desktop *desktop, rectangle_t *rect );
 156 extern void post_desktop_message( struct desktop *desktop, unsigned int message,
 157                                   lparam_t wparam, lparam_t lparam );
 158 extern void free_window_handle( struct window *win );
 159 extern void destroy_thread_windows( struct thread *thread );
 160 extern int is_child_window( user_handle_t parent, user_handle_t child );
 161 extern int is_valid_foreground_window( user_handle_t window );
 162 extern int is_window_visible( user_handle_t window );
 163 extern int is_window_transparent( user_handle_t window );
 164 extern int make_window_active( user_handle_t window );
 165 extern struct thread *get_window_thread( user_handle_t handle );
 166 extern user_handle_t shallow_window_from_point( struct desktop *desktop, int x, int y );
 167 extern struct thread *window_thread_from_point( user_handle_t scope, int x, int y );
 168 extern user_handle_t find_window_to_repaint( user_handle_t parent, struct thread *thread );
 169 extern struct window_class *get_window_class( user_handle_t window );
 170
 171 /* window class functions */
 172
 173 extern void destroy_process_classes( struct process *process );
 174 extern struct window_class *grab_class( struct process *process, atom_t atom,
 175                                         mod_handle_t instance, int *extra_bytes );
 176 extern void release_class( struct window_class *class );
 177 extern int is_desktop_class( struct window_class *class );
 178 extern int is_hwnd_message_class( struct window_class *class );
 179 extern int get_class_style( struct window_class *class );
 180 extern atom_t get_class_atom( struct window_class *class );
 181 extern client_ptr_t get_class_client_ptr( struct window_class *class );
 182
 183 /* windows station functions */
 184
 185 extern struct desktop *get_desktop_obj( struct process *process, obj_handle_t handle, unsigned int access );
 186 extern struct winstation *get_process_winstation( struct process *process, unsigned int access );
 187 extern struct desktop *get_thread_desktop( struct thread *thread, unsigned int access );
 188 extern void connect_process_winstation( struct process *process, struct thread *parent_thread,
 189                                         struct process *parent_process );
 190 extern void set_process_default_desktop( struct process *process, struct desktop *desktop,
 191                                          obj_handle_t handle );
 192 extern void close_process_desktop( struct process *process );
 193 extern void set_thread_default_desktop( struct thread *thread, struct desktop *desktop, obj_handle_t handle );
 194 extern void release_thread_desktop( struct thread *thread, int close );
 195
 196 /* checks if two rectangles are identical */
 197 static inline int is_rect_equal( const rectangle_t *rect1, const rectangle_t *rect2 )
 198 {
 199     return (rect1->left == rect2->left && rect1->right == rect2->right &&
 200             rect1->top == rect2->top && rect1->bottom == rect2->bottom);
 201 }
 202
 203 static inline int is_rect_empty( const rectangle_t *rect )
 204 {
 205     return (rect->left >= rect->right || rect->top >= rect->bottom);
 206 }
 207
 208 static inline int point_in_rect( const rectangle_t *rect, int x, int y )
 209 {
 210     return (x >= rect->left && x < rect->right && y >= rect->top && y < rect->bottom);
 211 }
 212
 213 static inline int scale_dpi( int val, unsigned int dpi_from, unsigned int dpi_to )
 214 {
 215     if (val >= 0) return (val * dpi_to + (dpi_from / 2)) / dpi_from;
 216     return (val * dpi_to - (dpi_from / 2)) / dpi_from;
 217 }
 218
 219 static inline void scale_dpi_rect( rectangle_t *rect, unsigned int dpi_from, unsigned int dpi_to )
 220 {
 221     rect->left   = scale_dpi( rect->left, dpi_from, dpi_to );
 222     rect->top    = scale_dpi( rect->top, dpi_from, dpi_to );
 223     rect->right  = scale_dpi( rect->right, dpi_from, dpi_to );
 224     rect->bottom = scale_dpi( rect->bottom, dpi_from, dpi_to );
 225 }
 226
 227 /* offset the coordinates of a rectangle */
 228 static inline void offset_rect( rectangle_t *rect, int offset_x, int offset_y )
 229 {
 230     rect->left   += offset_x;
 231     rect->top    += offset_y;
 232     rect->right  += offset_x;
 233     rect->bottom += offset_y;
 234 }
 235
 236 /* mirror a rectangle respective to the window client area */
 237 static inline void mirror_rect( const rectangle_t *client_rect, rectangle_t *rect )
 238 {
 239     int width = client_rect->right - client_rect->left;
 240     int tmp = rect->left;
 241     rect->left = width - rect->right;
 242     rect->right = width - tmp;
 243 }
 244
 245 /* compute the intersection of two rectangles; return 0 if the result is empty */
 246 static inline int intersect_rect( rectangle_t *dst, const rectangle_t *src1, const rectangle_t *src2 )
 247 {
 248     dst->left   = max( src1->left, src2->left );
 249     dst->top    = max( src1->top, src2->top );
 250     dst->right  = min( src1->right, src2->right );
 251     dst->bottom = min( src1->bottom, src2->bottom );
 252     return !is_rect_empty( dst );
 253 }
 254
 255 /* validate a window handle and return the full handle */
 256 static inline user_handle_t get_valid_window_handle( user_handle_t win )
 257 {
 258     if (get_user_object_handle( &win, USER_WINDOW )) return win;
 259     set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
 260     return 0;
 261 }
 262
 263 #endif  /* __WINE_SERVER_USER_H */