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authormarha <marha@users.sourceforge.net>2009-09-06 18:48:27 +0000
committermarha <marha@users.sourceforge.net>2009-09-06 18:48:27 +0000
commita915739887477b28d924ecc8417ee107d125bd6c (patch)
treec02f315476b61892d1fd89182e18943dce8d6277 /xorg-server/include/eventstr.h
parent6f25a23db1df27e992c34f6fd4c82e83c44fc2e2 (diff)
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+/*
+ * Copyright © 2009 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef EVENTSTR_H
+#define EVENTSTR_H
+
+#include <events.h>
+/**
+ * @file events.h
+ * This file describes the event structures used internally by the X
+ * server during event generation and event processing.
+ *
+ * When are internal events used?
+ * Events from input devices are stored as internal events in the EQ and
+ * processed as internal events until late in the processing cycle. Only then
+ * do they switch to their respective wire events.
+ */
+
+/**
+ * Event types. Used exclusively internal to the server, not visible on the
+ * protocol.
+ *
+ * Note: Keep KeyPress to Motion aligned with the core events.
+ * Keep ET_Raw* in the same order as KeyPress - Motion
+ */
+enum EventType {
+ ET_KeyPress = 2,
+ ET_KeyRelease,
+ ET_ButtonPress,
+ ET_ButtonRelease,
+ ET_Motion,
+ ET_Enter,
+ ET_Leave,
+ ET_FocusIn,
+ ET_FocusOut,
+ ET_ProximityIn,
+ ET_ProximityOut,
+ ET_DeviceChanged,
+ ET_Hierarchy,
+#if XFreeXDGA
+ ET_DGAEvent,
+#endif
+ ET_RawKeyPress,
+ ET_RawKeyRelease,
+ ET_RawButtonPress,
+ ET_RawButtonRelease,
+ ET_RawMotion,
+ ET_Internal = 0xFF /* First byte */
+};
+
+#define CHECKEVENT(ev) if (ev && ((InternalEvent*)(ev))->any.header != 0xFF) \
+ FatalError("Wrong event type %d.\n", \
+ ((InternalEvent*)(ev))->any.header);
+
+/**
+ * Used for ALL input device events internal in the server until
+ * copied into the matching protocol event.
+ *
+ * Note: We only use the device id because the DeviceIntPtr may become invalid while
+ * the event is in the EQ.
+ */
+struct _DeviceEvent
+{
+ unsigned char header; /**< Always ET_Internal */
+ enum EventType type; /**< One of EventType */
+ int length; /**< Length in bytes */
+ Time time; /**< Time in ms */
+ int deviceid; /**< Device to post this event for */
+ int sourceid; /**< The physical source device */
+ union {
+ uint32_t button; /**< Button number */
+ uint32_t key; /**< Key code */
+ } detail;
+ uint16_t root_x; /**< Pos relative to root window in integral data */
+ float root_x_frac; /**< Pos relative to root window in frac part */
+ uint16_t root_y; /**< Pos relative to root window in integral part */
+ float root_y_frac; /**< Pos relative to root window in frac part */
+ uint8_t buttons[(MAX_BUTTONS + 7)/8]; /**< Button mask */
+ struct {
+ uint8_t mask[(MAX_VALUATORS + 7)/8]; /**< Valuator mask */
+ uint8_t mode[(MAX_VALUATORS + 7)/8]; /**< Valuator mode (Abs or Rel)*/
+ uint32_t data[MAX_VALUATORS]; /**< Valuator data */
+ int32_t data_frac[MAX_VALUATORS]; /**< Fractional part for data */
+ } valuators;
+ struct {
+ uint32_t base; /**< XKB base modifiers */
+ uint32_t latched; /**< XKB latched modifiers */
+ uint32_t locked; /**< XKB locked modifiers */
+ uint32_t effective;/**< XKB effective modifiers */
+ } mods;
+ struct {
+ uint8_t base; /**< XKB base group */
+ uint8_t latched; /**< XKB latched group */
+ uint8_t locked; /**< XKB locked group */
+ uint8_t effective;/**< XKB effective group */
+ } group;
+ Window root; /**< Root window of the event */
+ int corestate; /**< Core key/button state BEFORE the event */
+ int key_repeat; /**< Internally-generated key repeat event */
+};
+
+
+/* Flags used in DeviceChangedEvent to signal if the slave has changed */
+#define DEVCHANGE_SLAVE_SWITCH 0x2
+/* Flags used in DeviceChangedEvent to signal whether the event was a
+ * pointer event or a keyboard event */
+#define DEVCHANGE_POINTER_EVENT 0x4
+#define DEVCHANGE_KEYBOARD_EVENT 0x8
+/* device capabilities changed */
+#define DEVCHANGE_DEVICE_CHANGE 0x10
+
+/**
+ * Sent whenever a device's capabilities have changed.
+ */
+struct _DeviceChangedEvent
+{
+ unsigned char header; /**< Always ET_Internal */
+ enum EventType type; /**< ET_DeviceChanged */
+ int length; /**< Length in bytes */
+ Time time; /**< Time in ms */
+ int deviceid; /**< Device whose capabilities have changed */
+ int flags; /**< Mask of ::HAS_NEW_SLAVE,
+ ::POINTER_EVENT, ::KEYBOARD_EVENT */
+ int masterid; /**< MD when event was generated */
+ int sourceid; /**< The device that caused the change */
+
+ struct {
+ int num_buttons; /**< Number of buttons */
+ Atom names[MAX_BUTTONS];/**< Button names */
+ } buttons;
+
+ int num_valuators; /**< Number of axes */
+ struct {
+ uint32_t min; /**< Minimum value */
+ uint32_t max; /**< Maximum value */
+ /* FIXME: frac parts of min/max */
+ uint32_t resolution; /**< Resolution counts/m */
+ uint8_t mode; /**< Relative or Absolute */
+ Atom name; /**< Axis name */
+ } valuators[MAX_VALUATORS];
+
+ struct {
+ int min_keycode;
+ int max_keycode;
+ } keys;
+};
+
+#if XFreeXDGA
+/**
+ * DGAEvent, used by DGA to intercept and emulate input events.
+ */
+struct _DGAEvent
+{
+ unsigned char header; /**< Always ET_Internal */
+ enum EventType type; /**< ET_DGAEvent */
+ int length; /**< Length in bytes */
+ Time time; /**< Time in ms */
+ int subtype; /**< KeyPress, KeyRelease, ButtonPress,
+ ButtonRelease, MotionNotify */
+ int detail; /**< Relative x coordinate */
+ int dx; /**< Relative x coordinate */
+ int dy; /**< Relative y coordinate */
+ int screen; /**< Screen number this event applies to */
+ uint16_t state; /**< Core modifier/button state */
+};
+#endif
+
+/**
+ * Raw event, contains the data as posted by the device.
+ */
+struct _RawDeviceEvent
+{
+ unsigned char header; /**< Always ET_Internal */
+ enum EventType type; /**< ET_Raw */
+ int length; /**< Length in bytes */
+ Time time; /**< Time in ms */
+ int deviceid; /**< Device to post this event for */
+ int sourceid; /**< The physical source device */
+ union {
+ uint32_t button; /**< Button number */
+ uint32_t key; /**< Key code */
+ } detail;
+ struct {
+ uint8_t mask[(MAX_VALUATORS + 7)/8]; /**< Valuator mask */
+ int32_t data[MAX_VALUATORS]; /**< Valuator data */
+ int32_t data_frac[MAX_VALUATORS]; /**< Fractional part for data */
+ int32_t data_raw[MAX_VALUATORS]; /**< Valuator data as posted */
+ int32_t data_raw_frac[MAX_VALUATORS];/**< Fractional part for data_raw */
+ } valuators;
+};
+
+/**
+ * Event type used inside the X server for input event
+ * processing.
+ */
+union _InternalEvent {
+ struct {
+ unsigned char header; /**< Always ET_Internal */
+ enum EventType type; /**< One of ET_* */
+ int length; /**< Length in bytes */
+ Time time; /**< Time in ms. */
+ } any;
+ DeviceEvent device;
+ DeviceChangedEvent changed;
+#if XFreeXDGA
+ DGAEvent dga;
+#endif
+ RawDeviceEvent raw;
+};
+
+#endif