/*
* DWN - Desktop Window Manager
* Event Bus System
*/
#ifndef WM_EVENT_H
#define WM_EVENT_H
#include "wm_types.h"
#include "wm_client.h"
#include "wm_string.h"
#ifdef __cplusplus
extern "C" {
#endif
/*==============================================================================
* Event Data Structures
*============================================================================*/
typedef struct {
WmEventType type;
WmTime timestamp;
WmId source_id;
} WmEventHeader;
/* Window Events */
typedef struct {
WmEventHeader header;
AbstractClient *client;
} WmEventWindowBase;
typedef struct {
WmEventHeader header;
AbstractClient *client;
} WmEventWindowCreated;
typedef struct {
WmEventHeader header;
AbstractClient *client;
WmString *old_title;
WmString *new_title;
} WmEventWindowTitleChanged;
typedef struct {
WmEventHeader header;
AbstractClient *client;
WmRect old_geometry;
WmRect new_geometry;
} WmEventWindowMoved;
typedef struct {
WmEventHeader header;
AbstractClient *client;
WmRect old_geometry;
WmRect new_geometry;
} WmEventWindowResized;
typedef struct {
WmEventHeader header;
AbstractClient *client;
WmClientFlags old_flags;
WmClientFlags new_flags;
} WmEventWindowStateChanged;
/* Workspace Events */
typedef struct {
WmEventHeader header;
WmWorkspaceId workspace;
} WmEventWorkspaceBase;
typedef struct {
WmEventHeader header;
WmWorkspaceId old_workspace;
WmWorkspaceId new_workspace;
} WmEventWorkspaceSwitched;
typedef struct {
WmEventHeader header;
WmWorkspaceId workspace;
WmLayoutType old_layout;
WmLayoutType new_layout;
} WmEventWorkspaceLayoutChanged;
typedef struct {
WmEventHeader header;
WmWorkspaceId workspace;
AbstractClient *client;
} WmEventClientWorkspaceChanged;
/* Input Events */
typedef struct {
WmEventHeader header;
unsigned int keycode;
unsigned int keysym;
unsigned int modifiers;
const char *key_name;
} WmEventKey;
typedef struct {
WmEventHeader header;
unsigned int button;
int x;
int y;
unsigned int modifiers;
} WmEventButton;
typedef struct {
WmEventHeader header;
int x;
int y;
int delta_x;
int delta_y;
unsigned int modifiers;
} WmEventMotion;
typedef struct {
WmEventHeader header;
int delta;
int x;
int y;
} WmEventScroll;
/* Monitor Events */
typedef struct {
WmEventHeader header;
int monitor_index;
WmRect geometry;
bool primary;
} WmEventMonitorAdded;
typedef struct {
WmEventHeader header;
int monitor_index;
} WmEventMonitorRemoved;
/* Configuration Events */
typedef struct {
WmEventHeader header;
WmString *config_path;
bool success;
WmString *error_message;
} WmEventConfigReloaded;
/* Command Events */
typedef struct {
WmEventHeader header;
WmCommandType command;
bool success;
WmString *error_message;
} WmEventCommandExecuted;
/* Custom Event */
typedef struct {
WmEventHeader header;
WmString *event_name;
void *custom_data;
WmDestroyFunc destroy_func;
} WmEventCustom;
/*==============================================================================
* Event Bus Lifecycle
*============================================================================*/
WmEventBus* wm_event_bus_create(void);
void wm_event_bus_destroy(WmEventBus *bus);
WmEventBus* wm_event_bus_get_default(void);
void wm_event_bus_set_default(WmEventBus *bus);
/*==============================================================================
* Event Subscription
*============================================================================*/
WmEventSubscription* wm_event_subscribe(WmEventBus *bus,
WmEventType type,
WmEventHandler handler,
void *user_data);
WmEventSubscription* wm_event_subscribe_pattern(WmEventBus *bus,
WmEventType type_min,
WmEventType type_max,
WmEventHandler handler,
void *user_data);
WmEventSubscription* wm_event_subscribe_all(WmEventBus *bus,
WmEventHandler handler,
void *user_data);
void wm_event_unsubscribe(WmEventBus *bus, WmEventSubscription *subscription);
void wm_event_unsubscribe_all(WmEventBus *bus, void *user_data);
/*==============================================================================
* Event Emission
*============================================================================*/
void wm_event_emit(WmEventBus *bus, WmEventType type, const void *event_data);
void wm_event_emit_async(WmEventBus *bus, WmEventType type, const void *event_data);
/* Convenience emitters */
void wm_event_emit_window_created(WmEventBus *bus, AbstractClient *client);
void wm_event_emit_window_destroyed(WmEventBus *bus, AbstractClient *client);
void wm_event_emit_window_focused(WmEventBus *bus, AbstractClient *client, AbstractClient *prev_focus);
void wm_event_emit_window_moved(WmEventBus *bus, AbstractClient *client, const WmRect *old_geom);
void wm_event_emit_window_resized(WmEventBus *bus, AbstractClient *client, const WmRect *old_geom);
void wm_event_emit_window_state_changed(WmEventBus *bus, AbstractClient *client,
WmClientFlags old_flags, WmClientFlags new_flags);
void wm_event_emit_workspace_switched(WmEventBus *bus, WmWorkspaceId old_ws, WmWorkspaceId new_ws);
void wm_event_emit_workspace_layout_changed(WmEventBus *bus, WmWorkspaceId ws,
WmLayoutType old_layout, WmLayoutType new_layout);
/*==============================================================================
* Event Processing
*============================================================================*/
void wm_event_process(WmEventBus *bus);
void wm_event_process_all(WmEventBus *bus);
bool wm_event_process_one(WmEventBus *bus);
void wm_event_dispatch_pending(WmEventBus *bus);
int wm_event_get_pending_count(const WmEventBus *bus);
/*==============================================================================
* Event Data Helpers
*============================================================================*/
WmEventHeader* wm_event_get_header(void *event_data);
WmTime wm_event_get_timestamp(const void *event_data);
const char* wm_event_type_to_string(WmEventType type);
WmEventType wm_event_type_from_string(const char *str);
/*==============================================================================
* Event Blocking/Filtering
*============================================================================*/
void wm_event_begin_block(WmEventBus *bus, WmEventType type);
void wm_event_end_block(WmEventBus *bus, WmEventType type);
bool wm_event_is_blocked(const WmEventBus *bus, WmEventType type);
void wm_event_suppress(WmEventBus *bus, WmEventType type);
void wm_event_unsuppress(WmEventBus *bus, WmEventType type);
bool wm_event_is_suppressed(const WmEventBus *bus, WmEventType type);
/*==============================================================================
* Custom Events
*============================================================================*/
void wm_event_emit_custom(WmEventBus *bus, const char *event_name, void *data, WmDestroyFunc destroy_fn);
WmEventSubscription* wm_event_subscribe_custom(WmEventBus *bus, const char *event_name,
WmEventHandler handler, void *user_data);
/*==============================================================================
* Event Statistics
*============================================================================*/
uint64_t wm_event_get_emit_count(const WmEventBus *bus, WmEventType type);
uint64_t wm_event_get_total_emit_count(const WmEventBus *bus);
void wm_event_reset_statistics(WmEventBus *bus);
#ifdef __cplusplus
}
#endif
#endif /* WM_EVENT_H */
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