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12to11/compositor.h
oldosfan 528f7ba858 Import files
2022-09-12 13:24:50 +00:00

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/* Wayland compositor running on top of an X serer.
Copyright (C) 2022 to various contributors.
This file is part of 12to11.
12to11 is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
12to11 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 General Public License
along with 12to11. If not, see <https://www.gnu.org/licenses/>. */
#include <sys/param.h>
#include <sys/stat.h>
#include <limits.h>
#include <X11/Xlib.h>
#include <X11/Xlib-xcb.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/extensions/Xrandr.h>
#include <X11/extensions/Xrender.h>
#include <X11/extensions/sync.h>
#include <xcb/xcb.h>
#include <xcb/xproto.h>
#include <xcb/shm.h>
#include <wayland-server.h>
#include <pixman.h>
#include "transfer_atoms.h"
typedef struct _Compositor Compositor;
struct _Compositor
{
/* The X display for this "compositor" instance. */
Display *display;
/* The XCB connection. */
xcb_connection_t *conn;
/* The Wayland display used to communicate with clients. */
struct wl_display *wl_display;
/* Its event loop object. */
struct wl_event_loop *wl_event_loop;
/* The name of the socket used to communicate with clients. */
const char *wl_socket;
/* XRandr event and error base, and versions. */
int rr_event_base, rr_error_base, rr_major, rr_minor;
/* The visual used for all windows. */
Visual *visual;
/* The colormap. */
Colormap colormap;
/* The picture format used for ARGB formats. */
XRenderPictFormat *argb_format;
/* The picture format used for XRGB formats. */
XRenderPictFormat *xrgb_format;
/* The depth of that visual. */
int n_planes;
/* Whether the server time is monotonic. */
Bool server_time_monotonic;
};
/* Forward declarations from seat.c. */
typedef struct _Seat Seat;
/* Defined in 12to11.c. */
extern Compositor compositor;
/* Defined in run.c. */
typedef struct _PollFd WriteFd;
typedef struct _PollFd ReadFd;
extern void XLRunCompositor (void);
extern WriteFd *XLAddWriteFd (int, void *, void (*) (int, void *));
extern ReadFd *XLAddReadFd (int, void *, void (*) (int, void *));
extern void XLRemoveWriteFd (WriteFd *);
extern void XLRemoveReadFd (ReadFd *);
/* Defined in alloc.c. */
extern void *XLMalloc (size_t);
extern void *XLRealloc (void *, size_t);
extern void *XLSafeMalloc (size_t);
extern void *XLCalloc (size_t, size_t);
extern char *XLStrdup (const char *);
extern void XLFree (void *);
/* Defined in fns.c. */
/* Generic singly linked list structure. */
typedef struct _XLList XLList;
typedef struct _XIDList XIDList;
typedef struct _XLAssoc XLAssoc;
typedef struct _XLAssocTable XLAssocTable;
typedef struct _RootWindowSelection RootWindowSelection;
struct _XLList
{
XLList *next;
void *data;
};
/* The same, but for X server resources. */
struct _XIDList
{
XIDList *next;
XID data;
};
extern void XLListFree (XLList *, void (*) (void *));
extern XLList *XLListRemove (XLList *, void *);
extern XLList *XLListPrepend (XLList *, void *);
extern void XIDListFree (XIDList *, void (*) (XID));
extern XIDList *XIDListRemove (XIDList *, XID);
extern XIDList *XIDListPrepend (XIDList *, XID);
struct _XLAssoc
{
/* Next object in this bucket. */
XLAssoc *next;
/* Last object in this bucket. */
XLAssoc *prev;
/* XID of the object. */
XID x_id;
/* Untyped data. */
void *data;
};
/* Map between XID and untyped data. Implemented the same way as the
old XAssocTable. */
struct _XLAssocTable
{
/* Pointer to first pucket in bucket array. */
XLAssoc *buckets;
/* Table size (number of buckets). */
int size;
};
extern XLAssocTable *XLCreateAssocTable (int);
extern void XLMakeAssoc (XLAssocTable *, XID, void *);
extern void *XLLookUpAssoc (XLAssocTable *, XID);
extern void XLDeleteAssoc (XLAssocTable *, XID);
extern void XLDestroyAssocTable (XLAssocTable *);
extern void XLAssert (Bool);
extern int XLOpenShm (void);
extern void XLScaleRegion (pixman_region32_t *, pixman_region32_t *,
float, float);
extern Time XLGetServerTimeRoundtrip (void);
extern RootWindowSelection *XLSelectInputFromRootWindow (unsigned long);
extern void XLDeselectInputFromRootWindow (RootWindowSelection *);
/* Defined in compositor.c. */
extern void XLInitCompositor (void);
/* Defined in region.c. */
extern void XLCreateRegion (struct wl_client *,
struct wl_resource *,
uint32_t);
/* Defined in buffer.c. */
typedef struct _ExtBuffer ExtBuffer;
typedef struct _ExtBufferFuncs ExtBufferFuncs;
typedef void (*ExtBufferFunc) (ExtBuffer *, void *);
struct _ExtBufferFuncs
{
void (*retain) (ExtBuffer *);
void (*dereference) (ExtBuffer *);
Picture (*get_picture) (ExtBuffer *);
Pixmap (*get_pixmap) (ExtBuffer *);
unsigned int (*width) (ExtBuffer *);
unsigned int (*height) (ExtBuffer *);
void (*release) (ExtBuffer *);
void (*print_buffer) (ExtBuffer *);
};
struct _ExtBuffer
{
/* Functions for this buffer. */
ExtBufferFuncs funcs;
/* List of destroy listeners. */
XLList *destroy_listeners;
};
extern void XLRetainBuffer (ExtBuffer *);
extern void XLDereferenceBuffer (ExtBuffer *);
extern Picture XLPictureFromBuffer (ExtBuffer *);
extern Pixmap XLPixmapFromBuffer (ExtBuffer *);
extern unsigned int XLBufferWidth (ExtBuffer *);
extern unsigned int XLBufferHeight (ExtBuffer *);
extern void XLReleaseBuffer (ExtBuffer *);
extern void *XLBufferRunOnFree (ExtBuffer *, ExtBufferFunc,
void *);
extern void XLBufferCancelRunOnFree (ExtBuffer *, void *);
extern void XLPrintBuffer (ExtBuffer *);
extern void ExtBufferDestroy (ExtBuffer *);
/* Defined in shm.c. */
extern void XLInitShm (void);
/* Defined in subcompositor.c. */
typedef struct _View View;
typedef struct _List List;
typedef struct _Subcompositor Subcompositor;
extern void SubcompositorInit (void);
extern Subcompositor *MakeSubcompositor (void);
extern View *MakeView (void);
extern void SubcompositorSetTarget (Subcompositor *, Picture);
extern void SubcompositorInsert (Subcompositor *, View *);
extern void SubcompositorInsertBefore (Subcompositor *, View *, View *);
extern void SubcompositorInsertAfter (Subcompositor *, View *, View *);
extern void SubcompositorSetOpaqueCallback (Subcompositor *,
void (*) (Subcompositor *,
void *,
pixman_region32_t *),
void *);
extern void SubcompositorSetInputCallback (Subcompositor *,
void (*) (Subcompositor *,
void *,
pixman_region32_t *),
void *);
extern void SubcompositorSetBoundsCallback (Subcompositor *,
void (*) (void *, int, int,
int, int),
void *);
extern void SubcompositorBounds (Subcompositor *, int *, int *, int *, int *);
extern void SubcompositorSetProjectiveTransform (Subcompositor *, int, int);
extern void SubcompositorUpdate (Subcompositor *);
extern void SubcompositorExpose (Subcompositor *, XEvent *);
extern void SubcompositorGarbage (Subcompositor *);
extern View *SubcompositorLookupView (Subcompositor *, int, int, int *, int *);
extern Bool SubcompositorIsEmpty (Subcompositor *);
extern int SubcompositorWidth (Subcompositor *);
extern int SubcompositorHeight (Subcompositor *);
extern void SubcompositorFree (Subcompositor *);
extern void SubcompositorFreeze (Subcompositor *);
extern void SubcompositorUnfreeze (Subcompositor *);
extern void ViewSetSubcompositor (View *, Subcompositor *);
extern void ViewInsert (View *, View *);
extern void ViewInsertAfter (View *, View *, View *);
extern void ViewInsertBefore (View *, View *, View *);
extern void ViewInsertStart (View *, View *);
extern void ViewUnparent (View *);
extern View *ViewGetParent (View *);
extern void ViewAttachBuffer (View *, ExtBuffer *);
extern void ViewMove (View *, int, int);
extern void ViewDetach (View *);
extern void ViewMap (View *);
extern void ViewUnmap (View *);
extern void ViewSetData (View *, void *);
extern void *ViewGetData (View *);
extern void ViewTranslate (View *, int, int, int *, int *);
extern void ViewFree (View *);
extern void ViewDamage (View *, pixman_region32_t *);
extern void ViewSetOpaque (View *, pixman_region32_t *);
extern void ViewSetInput (View *, pixman_region32_t *);
extern int ViewWidth (View *);
extern int ViewHeight (View *);
extern void ViewSetScale (View *, int);
extern Subcompositor *ViewGetSubcompositor (View *);
/* Defined in surface.c. */
typedef struct _State State;
typedef struct _FrameCallback FrameCallback;
typedef enum _RoleType RoleType;
enum _RoleType
{
AnythingType,
SubsurfaceType,
XdgType,
CursorType,
DndIconType,
};
enum
{
PendingNone = 0,
PendingOpaqueRegion = 1,
PendingInputRegion = (1 << 2),
PendingDamage = (1 << 3),
PendingSurfaceDamage = (1 << 4),
PendingBuffer = (1 << 5),
PendingFrameCallbacks = (1 << 6),
PendingBufferScale = (1 << 7),
PendingAttachments = (1 << 8),
};
struct _FrameCallback
{
/* The next and last callbacks. */
FrameCallback *next, *last;
/* The wl_resource containing this callback. */
struct wl_resource *resource;
};
struct _State
{
/* Accumulated damage. */
pixman_region32_t damage;
/* Opaque region. */
pixman_region32_t opaque;
/* Input region. */
pixman_region32_t input;
/* Surface damage. */
pixman_region32_t surface;
/* The currently attached buffer. */
ExtBuffer *buffer;
/* What part of this state has been changed. */
int pending;
/* The scale of this buffer. */
int buffer_scale;
/* List of frame callbacks. */
FrameCallback frame_callbacks;
/* Attachment position. */
int x, y;
};
typedef enum _ClientDataType ClientDataType;
typedef struct _Surface Surface;
typedef struct _Role Role;
typedef struct _RoleFuncs RoleFuncs;
typedef struct _CommitCallback CommitCallback;
typedef struct _UnmapCallback UnmapCallback;
typedef struct _DestroyCallback DestroyCallback;
enum _ClientDataType
{
SubsurfaceData,
MaxClientData,
};
struct _DestroyCallback
{
/* The next and last destroy callbacks in this list. */
DestroyCallback *next, *last;
/* Function called when the surface is destroyed. */
void (*destroy_func) (void *data);
/* Data for the surface. */
void *data;
};
struct _UnmapCallback
{
/* The next and last callbacks in this list. */
UnmapCallback *next, *last;
/* Function called when the surface is unmapped. */
void (*unmap) (void *data);
/* Data for the surface. */
void *data;
};
struct _CommitCallback
{
/* Function called when the surface is committed, but before any
role commit function. */
void (*commit) (Surface *, void *);
/* Data that callback is called with. */
void *data;
/* The next and last commit callbacks in this list. */
CommitCallback *next, *last;
};
struct _Surface
{
/* The view associated with this surface. */
View *view;
/* The view used to store subsurfaces below this surface.
No buffer is ever attached; this is purely a container. */
View *under;
/* The resource corresponding to this surface. */
struct wl_resource *resource;
/* The role corresponding to this surface. */
Role *role;
/* The kind of role allowed for this surface. */
RoleType role_type;
/* The state that's pending a commit. */
State pending_state;
/* The state that's currently in use. */
State current_state;
/* Any state cached for application after early_commit returns
False. */
State cached_state;
/* List of subsurfaces. */
XLList *subsurfaces;
/* Array of "client data". */
void *client_data[MaxClientData];
/* List of functions for freeing "client data". */
void (*free_client_data[MaxClientData]) (void *);
/* List of commit callbacks. */
CommitCallback commit_callbacks;
/* List of destroy callbacks. */
DestroyCallback destroy_callbacks;
/* List of unmap callbacks. */
UnmapCallback unmap_callbacks;
/* The outputs this surface is known to be on. */
RROutput *outputs;
/* The number of outputs this surface is known to be on. */
int n_outputs;
/* Bounds inside which the surface output need not be
recomputed. */
pixman_region32_t output_region;
/* The next and last surfaces in this list. */
Surface *next, *last;
/* The key for the window scalling factor callback. */
void *scale_callback_key;
/* X, Y of the last coordinates that were used to update this
surface's entered outputs. */
int output_x, output_y;
};
struct _RoleFuncs
{
/* These are mandatory. */
Bool (*setup) (Surface *, Role *);
void (*teardown) (Surface *, Role *);
void (*commit) (Surface *, Role *);
void (*release_buffer) (Surface *, Role *, ExtBuffer *);
/* These are optional. */
Bool (*early_commit) (Surface *, Role *);
Bool (*subframe) (Surface *, Role *);
void (*end_subframe) (Surface *, Role *);
Window (*get_window) (Surface *, Role *);
void (*get_resize_dimensions) (Surface *, Role *, int *, int *);
void (*post_resize) (Surface *, Role *, int, int, int, int);
void (*move_by) (Surface *, Role *, int, int);
void (*rescale) (Surface *, Role *);
void (*note_desync_child) (Surface *, Role *);
void (*note_child_synced) (Surface *, Role *);
};
struct _Role
{
/* Various callbacks for the role function. */
RoleFuncs funcs;
/* The struct wl_resource backing this role. */
struct wl_resource *resource;
/* Surface attached to this role. */
Surface *surface;
};
extern Surface all_surfaces;
extern void XLCreateSurface (struct wl_client *,
struct wl_resource *,
uint32_t);
extern void XLCommitSurface (Surface *, Bool);
extern void XLInitSurfaces (void);
extern Bool XLSurfaceAttachRole (Surface *, Role *);
extern void XLSurfaceReleaseRole (Surface *, Role *);
extern void XLDefaultCommit (Surface *);
extern void XLStateAttachBuffer (State *, ExtBuffer *);
extern void XLStateDetachBuffer (State *);
extern void XLSurfaceRunFrameCallbacks (Surface *, struct timespec);
extern CommitCallback *XLSurfaceRunAtCommit (Surface *,
void (*) (Surface *, void *),
void *);
extern void XLSurfaceCancelCommitCallback (CommitCallback *);
extern UnmapCallback *XLSurfaceRunAtUnmap (Surface *, void (*) (void *),
void *);
extern void XLSurfaceCancelUnmapCallback (UnmapCallback *);
extern DestroyCallback *XLSurfaceRunOnFree (Surface *, void (*) (void *),
void *);
extern void XLSurfaceCancelRunOnFree (DestroyCallback *);
extern void *XLSurfaceGetClientData (Surface *, ClientDataType,
size_t, void (*) (void *));
extern Bool XLSurfaceGetResizeDimensions (Surface *, int *, int *);
extern void XLSurfacePostResize (Surface *, int, int, int, int);
extern void XLSurfaceMoveBy (Surface *, int, int);
extern Window XLWindowFromSurface (Surface *);
extern void XLUpdateSurfaceOutputs (Surface *, int, int, int, int);
/* Defined in output.c. */
extern int global_scale_factor;
extern void XLInitRROutputs (void);
extern Bool XLHandleOneXEventForOutputs (XEvent *);
extern void XLOutputGetMinRefresh (struct timespec *);
extern Bool XLGetOutputRectAt (int, int, int *, int *, int *, int *);
extern void *XLAddScaleChangeCallback (void *, void (*) (void *, int));
extern void XLRemoveScaleChangeCallback (void *);
extern void XLClearOutputs (Surface *);
/* Defined in atoms.c. */
extern Atom _NET_WM_OPAQUE_REGION, _XL_BUFFER_RELEASE,
_NET_WM_SYNC_REQUEST_COUNTER, _NET_WM_FRAME_DRAWN, WM_DELETE_WINDOW,
WM_PROTOCOLS, _NET_SUPPORTING_WM_CHECK, _NET_SUPPORTED, _NET_WM_SYNC_REQUEST,
_MOTIF_WM_HINTS, _NET_WM_STATE_MAXIMIZED_VERT, _NET_WM_STATE_MAXIMIZED_HORZ,
_NET_WM_STATE_FOCUSED, _NET_WM_STATE_FULLSCREEN, _NET_WM_STATE,
_NET_WM_MOVERESIZE, _GTK_FRAME_EXTENTS, WM_TRANSIENT_FOR, _XL_DMA_BUF_CREATED,
_GTK_SHOW_WINDOW_MENU, _NET_WM_ALLOWED_ACTIONS, _NET_WM_ACTION_FULLSCREEN,
_NET_WM_ACTION_MAXIMIZE_HORZ, _NET_WM_ACTION_MAXIMIZE_VERT,
_NET_WM_ACTION_MINIMIZE, INCR, CLIPBOARD, TARGETS, UTF8_STRING,
_XL_SERVER_TIME_ATOM, MULTIPLE, TIMESTAMP, ATOM_PAIR, _NET_WM_NAME, WM_NAME,
MANAGER, _XSETTINGS_SETTINGS, libinput_Scroll_Methods_Available, XdndAware,
XdndSelection, XdndTypeList, XdndActionCopy, XdndActionMove, XdndActionLink,
XdndActionAsk, XdndActionPrivate, XdndActionList, XdndActionDescription,
XdndProxy, XdndEnter, XdndPosition, XdndStatus, XdndLeave, XdndDrop,
XdndFinished, _NET_WM_FRAME_TIMINGS, _NET_WM_BYPASS_COMPOSITOR, WM_STATE,
_NET_WM_WINDOW_TYPE, _NET_WM_WINDOW_TYPE_MENU, _NET_WM_WINDOW_TYPE_DND;
/* This is automatically generated by mime4.awk. */
extern Atom DirectTransferAtoms;
extern Atom InternAtom (const char *);
extern void ProvideAtom (const char *, Atom);
extern void XLInitAtoms (void);
/* Defined in xdg_wm.c. */
extern void XLInitXdgWM (void);
/* Defined in frame_clock.c. */
typedef struct _FrameClock FrameClock;
extern FrameClock *XLMakeFrameClockForWindow (Window);
extern Bool XLFrameClockFrameInProgress (FrameClock *);
extern void XLFrameClockAfterFrame (FrameClock *, void (*) (FrameClock *,
void *),
void *);
extern void XLFrameClockHandleFrameEvent (FrameClock *, XEvent *);
extern void XLFrameClockStartFrame (FrameClock *, Bool);
extern void XLFrameClockEndFrame (FrameClock *);
extern Bool XLFrameClockIsFrozen (FrameClock *);
extern Bool XLFrameClockCanBatch (FrameClock *);
extern Bool XLFrameClockNeedConfigure (FrameClock *);
extern void XLFrameClockFreeze (FrameClock *);
extern void XLFrameClockUnfreeze (FrameClock *);
extern void XLFreeFrameClock (FrameClock *);
extern Bool XLFrameClockSyncSupported (void);
extern Bool XLFrameClockCanRunFrame (FrameClock *);
extern void XLFrameClockSetPredictRefresh (FrameClock *);
extern void XLFrameClockDisablePredictRefresh (FrameClock *);
extern void XLFrameClockSetFreezeCallback (FrameClock *, void (*) (void *),
void *);
extern void *XLAddCursorClockCallback (void (*) (void *, struct timespec),
void *);
extern void XLStopCursorClockCallback (void *);
extern void XLStartCursorClock (void);
extern void XLStopCursorClock (void);
extern void XLInitFrameClock (void);
/* Defined in xdg_surface.c. */
typedef struct _XdgRoleImplementation XdgRoleImplementation;
typedef struct _XdgRoleImplementationFuncs XdgRoleImplementationFuncs;
typedef enum _XdgRoleImplementationType XdgRoleImplementationType;
enum _XdgRoleImplementationType
{
TypeUnknown,
TypeToplevel,
TypePopup,
};
struct _XdgRoleImplementationFuncs
{
void (*attach) (Role *, XdgRoleImplementation *);
void (*commit) (Role *, Surface *, XdgRoleImplementation *);
void (*detach) (Role *, XdgRoleImplementation *);
void (*ack_configure) (Role *, XdgRoleImplementation *, uint32_t);
void (*note_size) (Role *, XdgRoleImplementation *, int, int);
void (*note_window_pre_resize) (Role *, XdgRoleImplementation *, int, int);
void (*note_window_resized) (Role *, XdgRoleImplementation *, int, int);
void (*handle_geometry_change) (Role *, XdgRoleImplementation *);
void (*post_resize) (Role *, XdgRoleImplementation *, int, int, int, int);
void (*commit_inside_frame) (Role *, XdgRoleImplementation *);
};
struct _XdgRoleImplementation
{
/* Various functions implementing the logic behind this role. */
XdgRoleImplementationFuncs funcs;
};
extern unsigned long border_pixel;
extern int shape_base;
extern Bool XLHandleXEventForXdgSurfaces (XEvent *);
extern void XLInitXdgSurfaces (void);
extern void XLGetXdgSurface (struct wl_client *, struct wl_resource *,
uint32_t, struct wl_resource *);
extern void XLXdgRoleAttachImplementation (Role *, XdgRoleImplementation *);
extern void XLXdgRoleDetachImplementation (Role *, XdgRoleImplementation *);
extern void XLXdgRoleSendConfigure (Role *, uint32_t);
extern void XLXdgRoleCalcNewWindowSize (Role *, int, int, int *, int *);
extern int XLXdgRoleGetWidth (Role *);
extern int XLXdgRoleGetHeight (Role *);
extern void XLXdgRoleSetBoundsSize (Role *, int, int);
extern void XLXdgRoleGetCurrentGeometry (Role *, int *, int *, int *, int *);
extern void XLXdgRoleNoteConfigure (Role *, XEvent *);
extern void XLRetainXdgRole (Role *);
extern void XLReleaseXdgRole (Role *);
extern void XLXdgRoleCurrentRootPosition (Role *, int *, int *);
extern Bool XLXdgRoleInputRegionContains (Role *, int, int);
extern void XLXdgRoleResizeForMap (Role *);
extern void *XLXdgRoleRunOnReconstrain (Role *, void (*) (void *, XEvent *),
void (*) (void *), void *);
extern void XLXdgRoleCancelReconstrainCallback (void *);
extern void XLXdgRoleReconstrain (Role *, XEvent *);
extern void XLXdgRoleMoveBy (Role *, int, int);
extern Window XLWindowFromXdgRole (Role *);
extern Subcompositor *XLSubcompositorFromXdgRole (Role *);
extern XdgRoleImplementationType XLTypeOfXdgRole (Role *);
extern XdgRoleImplementation *XLImplementationOfXdgRole (Role *);
extern FrameClock *XLXdgRoleGetFrameClock (Role *);
extern XdgRoleImplementation *XLLookUpXdgToplevel (Window);
extern XdgRoleImplementation *XLLookUpXdgPopup (Window);
/* Defined in positioner.c. */
typedef struct _Positioner Positioner;
extern void XLCreateXdgPositioner (struct wl_client *, struct wl_resource *,
uint32_t);
extern void XLPositionerCalculateGeometry (Positioner *, Role *, int *, int *,
int *, int *);
extern void XLRetainPositioner (Positioner *);
extern void XLReleasePositioner (Positioner *);
extern Bool XLPositionerIsReactive (Positioner *);
/* Defined in xdg_toplevel.c. */
extern void XLGetXdgToplevel (struct wl_client *, struct wl_resource *,
uint32_t);
extern Bool XLHandleXEventForXdgToplevels (XEvent *);
extern Bool XLIsXdgToplevel (Window);
extern void XLInitXdgToplevels (void);
/* Defined in xdg_popup.c. */
extern void XLGetXdgPopup (struct wl_client *, struct wl_resource *,
uint32_t, struct wl_resource *,
struct wl_resource *);
extern Bool XLHandleXEventForXdgPopups (XEvent *);
extern Bool XLHandleButtonForXdgPopups (Seat *, Surface *);
extern void XLInitPopups (void);
/* Defined in xerror.c. */
extern void InitXErrors (void);
extern void CatchXErrors (void);
extern Bool UncatchXErrors (XErrorEvent *);
/* Defined in ewmh.c. */
extern Bool XLWmSupportsHint (Atom);
/* Defined in timer.c. */
typedef struct _Timer Timer;
extern Timer *AddTimer (void (*) (Timer *, void *,
struct timespec),
void *, struct timespec);
extern Timer *AddTimerWithBaseTime (void (*) (Timer *, void *,
struct timespec),
void *, struct timespec,
struct timespec);
extern void RemoveTimer (Timer *);
extern void RetimeTimer (Timer *);
extern struct timespec TimerCheck (void);
extern struct timespec CurrentTimespec (void);
extern struct timespec MakeTimespec (time_t, long int);
extern int TimespecCmp (struct timespec, struct timespec);
extern struct timespec TimespecAdd (struct timespec, struct timespec);
extern struct timespec TimespecSub (struct timespec, struct timespec);
extern void XLInitTimers (void);
/* Defined in subsurface.c. */
extern void XLSubsurfaceParentDestroyed (Role *);
extern void XLSubsurfaceHandleParentCommit (Surface *);
extern void XLInitSubsurfaces (void);
extern void XLUpdateOutputsForChildren (Surface *, int, int);
extern void XLUpdateDesynchronousChildren (Surface *, int *);
/* Defined in data_device.c. */
typedef struct _DataDevice DataDevice;
typedef struct _DataSource DataSource;
typedef struct _CreateOfferFuncs CreateOfferFuncs;
typedef struct _DndOfferFuncs DndOfferFuncs;
typedef struct wl_resource *(*CreateOfferFunc) (struct wl_client *, Time);
typedef void (*SendDataFunc) (struct wl_resource *, Time);
struct _CreateOfferFuncs
{
CreateOfferFunc create_offer;
SendDataFunc send_offers;
};
struct _DndOfferFuncs
{
struct wl_resource *(*create) (struct wl_client *, int);
void (*send_offers) (struct wl_resource *);
};
extern void XLInitDataDevice (void);
extern void XLRetainDataDevice (DataDevice *);
extern void XLReleaseDataDevice (DataDevice *);
extern void XLDataDeviceClearSeat (DataDevice *);
extern void XLDataDeviceHandleFocusChange (DataDevice *);
extern void XLSetForeignSelection (Time, CreateOfferFuncs);
extern void XLClearForeignSelection (Time);
extern int XLDataSourceTargetCount (DataSource *);
extern void XLDataSourceGetTargets (DataSource *, Atom *);
extern struct wl_resource *XLResourceFromDataSource (DataSource *);
extern Bool XLDataSourceHasAtomTarget (DataSource *, Atom);
extern Bool XLDataSourceHasTarget (DataSource *, const char *);
extern void XLDataSourceAttachDragDevice (DataSource *, DataDevice *);
extern void *XLDataSourceAddDestroyCallback (DataSource *, void (*) (void *),
void *);
extern void XLDataSourceCancelDestroyCallback (void *);
extern void XLDataSourceSendDropPerformed (DataSource *);
extern void XLDataSourceSendDropCancelled (DataSource *);
extern Bool XLDataSourceCanDrop (DataSource *);
extern XLList *XLDataSourceGetMimeTypeList (DataSource *);
extern void XLDataSourceUpdateDeviceActions (DataSource *);
extern uint32_t XLDataSourceGetSupportedActions (DataSource *);
extern void XLDataDeviceMakeOffers (Seat *, DndOfferFuncs, Surface *,
int, int);
extern void XLDataDeviceSendEnter (Seat *, Surface *, double, double,
DataSource *);
extern void XLDataDeviceSendMotion (Seat *, Surface *, double, double, Time);
extern void XLDataDeviceSendLeave (Seat *, Surface *, DataSource *);
extern void XLDataDeviceSendDrop (Seat *, Surface *);
/* Defined in seat.c. */
extern int xi2_opcode;
extern int xi_first_event;
extern int xi_first_error;
extern XLList *live_seats;
extern Bool XLHandleOneXEventForSeats (XEvent *);
extern Window XLGetGEWindowForSeats (XEvent *);
extern void XLDispatchGEForSeats (XEvent *, Surface *,
Subcompositor *);
extern void XLSelectStandardEvents (Window);
extern void XLInitSeats (void);
extern Bool XLResizeToplevel (Seat *, Surface *, uint32_t, uint32_t);
extern void XLMoveToplevel (Seat *, Surface *, uint32_t);
extern Bool XLSeatExplicitlyGrabSurface (Seat *, Surface *, uint32_t);
extern void *XLSeatRunAfterResize (Seat *, void (*) (void *, void *),
void *);
extern void XLSeatCancelResizeCallback (void *);
extern void *XLSeatRunOnDestroy (Seat *, void (*) (void *), void *);
extern void XLSeatCancelDestroyListener (void *);
extern DataDevice *XLSeatGetDataDevice (Seat *);
extern void XLSeatSetDataDevice (Seat *, DataDevice *);
extern Bool XLSeatIsInert (Seat *);
extern Bool XLSeatIsClientFocused (Seat *, struct wl_client *);
extern void XLSeatShowWindowMenu (Seat *, Surface *, int, int);
extern Time XLSeatGetLastUserTime (Seat *);
extern void XLSeatBeginDrag (Seat *, DataSource *, Surface *,
Surface *, uint32_t);
extern DataSource *XLSeatGetDragDataSource (Seat *);
extern void *XLSeatAddModifierCallback (Seat *, void (*) (unsigned int, void *),
void *);
extern void XLSeatRemoveModifierCallback (void *);
extern unsigned int XLSeatGetEffectiveModifiers (Seat *);
extern Cursor InitDefaultCursor (void);
/* Defined in dmabuf.c. */
extern void XLInitDmabuf (void);
extern Bool XLHandleErrorForDmabuf (XErrorEvent *);
extern Bool XLHandleOneXEventForDmabuf (XEvent *);
/* Defined in select.c. */
typedef struct _ReadTransfer ReadTransfer;
typedef struct _WriteTransfer WriteTransfer;
typedef enum _ReadStatus ReadStatus;
typedef ReadStatus (*GetDataFunc) (WriteTransfer *, unsigned char *,
ptrdiff_t, ptrdiff_t *);
enum _ReadStatus
{
ReadOk,
EndOfFile,
NeedBiggerBuffer,
};
extern Window selection_transfer_window;
extern void FinishTransfers (void);
extern long SelectionQuantum (void);
extern Bool HookSelectionEvent (XEvent *);
extern void InitSelections (void);
extern ReadTransfer *ConvertSelectionFuncs (Atom, Atom, Time, void *,
void (*) (ReadTransfer *, Atom,
int),
void (*) (ReadTransfer *, Atom,
int, ptrdiff_t),
Bool (*) (ReadTransfer *, Bool));
extern void *GetTransferData (ReadTransfer *);
extern Time GetTransferTime (ReadTransfer *);
extern unsigned char *ReadChunk (ReadTransfer *, int, ptrdiff_t *,
ptrdiff_t *);
extern void SkipChunk (ReadTransfer *);
extern void CompleteDelayedTransfer (ReadTransfer *);
extern Bool OwnSelection (Time, Atom, GetDataFunc (*) (WriteTransfer *,
Atom, Atom *),
Atom *, int);
extern void DisownSelection (Atom);
extern void SetWriteTransferData (WriteTransfer *, void *);
extern void *GetWriteTransferData (WriteTransfer *);
extern void StartReading (WriteTransfer *);
/* Defined in xdata.c. */
extern Bool XLHandleOneXEventForXData (XEvent *);
extern void XLNoteSourceDestroyed (DataSource *);
extern Bool XLNoteLocalSelection (Seat *, DataSource *);
extern void XLReceiveDataFromSelection (Time, Atom, Atom, int);
extern Bool XLOwnDragSelection (Time, DataSource *);
extern void XLInitXData (void);
/* Defined in xsettings.c. */
extern void XLInitXSettings (void);
extern Bool XLHandleOneXEventForXSettings (XEvent *);
extern void XLListenToIntegerSetting (const char *, void (*) (int));
/* Defined in dnd.c. */
extern void XLDndWriteAwarenessProperty (Window);
extern Bool XLDndFilterClientMessage (Surface *, XEvent *);
extern void XLHandleOneXEventForDnd (XEvent *);
extern void XLDoDragLeave (Seat *);
extern void XLDoDragMotion (Seat *, double, double);
extern void XLDoDragFinish (Seat *);
extern Bool XLDoDragDrop (Seat *);
/* Defined in icon_surface.c. */
typedef struct _IconSurface IconSurface;
extern IconSurface *XLGetIconSurface (Surface *);
extern Bool XLHandleOneXEventForIconSurfaces (XEvent *);
extern void XLMoveIconSurface (IconSurface *, int, int);
extern void XLInitIconSurfaces (void);
extern void XLReleaseIconSurface (IconSurface *);
extern Bool XLIsWindowIconSurface (Window);
/* Utility functions that don't belong in a specific file. */
#define ArrayElements(arr) (sizeof (arr) / sizeof (arr)[0])
#define BoxStartX(box) (MIN ((box).x1, (box).x2))
#define BoxEndX(box) (MAX ((box).x1, (box).x2) - 1)
#define BoxStartY(box) (MIN ((box).y1, (box).y2))
#define BoxEndY(box) (MAX ((box).y1, (box).y2) - 1)
#define BoxWidth(box) (BoxEndX (box) - BoxStartX (box) + 1)
#define BoxHeight(box) (BoxEndY (box) - BoxStartY (box) + 1)
#define SafeCmp(n1, n2) (((n1) > (n2)) - ((n1) < (n2)))
/* Taken from intprops.h in gnulib. */
/* True if the real type T is signed. */
#define TypeIsSigned(t) (! ((t) 0 < (t) -1))
/* The width in bits of the integer type or expression T.
Do not evaluate T. T must not be a bit-field expression.
Padding bits are not supported; this is checked at compile-time below. */
#define TypeWidth(t) (sizeof (t) * CHAR_BIT)
/* The maximum and minimum values for the integer type T. */
#define TypeMinimum(t) ((t) ~ TypeMaximum (t))
#define TypeMaximum(t) \
((t) (! TypeIsSigned (t) \
? (t) -1 \
: ((((t) 1 << (TypeWidth (t) - 2)) - 1) * 2 + 1)))
#define IntAddWrapv(a, b, r) __builtin_add_overflow (a, b, r)
#define IntSubtractWrapv(a, b, r) __builtin_sub_overflow (a, b, r)
#define IntMultiplyWrapv(a, b, r) __builtin_mul_overflow (a, b, r)
#define ConfigureWidth(event) ((event)->xconfigure.width / global_scale_factor)
#define ConfigureHeight(event) ((event)->xconfigure.height / global_scale_factor)
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