FreeRDP/client/X11/xf_keyboard.c

189 lines
4.8 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Client
* X11 Keyboard Handling
*
* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include "xf_keyboard.h"
void xf_kbd_init(xfInfo* xfi)
{
memset(xfi->pressed_keys, 0, 256 * sizeof(boolean));
xfi->keyboard_layout_id = xfi->instance->settings->kbd_layout;
xfi->keyboard_layout_id = freerdp_kbd_init(xfi->display, xfi->keyboard_layout_id);
xfi->instance->settings->kbd_layout = xfi->keyboard_layout_id;
}
void xf_kbd_set_keypress(xfInfo* xfi, uint8 keycode, KeySym keysym)
{
if (keycode >= 8)
xfi->pressed_keys[keycode] = keysym;
else
return;
}
void xf_kbd_unset_keypress(xfInfo* xfi, uint8 keycode)
{
if (keycode >= 8)
xfi->pressed_keys[keycode] = NoSymbol;
else
return;
}
boolean xf_kbd_key_pressed(xfInfo* xfi, KeySym keysym)
{
KeyCode keycode = XKeysymToKeycode(xfi->display, keysym);
return (xfi->pressed_keys[keycode] == keysym);
}
void xf_kbd_send_key(xfInfo* xfi, boolean down, uint8 keycode)
{
uint16 flags;
uint8 scancode;
boolean extended;
rdpInput* input;
input = xfi->instance->input;
scancode = freerdp_kbd_get_scancode_by_keycode(keycode, &extended);
if (scancode == 0)
{
/* unknown key */
}
else if ((scancode == 0x46) && extended &&
!xf_kbd_key_pressed(xfi, XK_Control_L) && !xf_kbd_key_pressed(xfi, XK_Control_R))
{
/* Pause without Ctrl has to be sent as Ctrl + NumLock. */
if (down)
{
input->KeyboardEvent(input, KBD_FLAGS_DOWN, 0x1D); /* Ctrl down */
input->KeyboardEvent(input, KBD_FLAGS_DOWN, 0x45); /* NumLock down */
input->KeyboardEvent(input, KBD_FLAGS_RELEASE, 0x1D); /* Ctrl up */
input->KeyboardEvent(input, KBD_FLAGS_RELEASE, 0x45); /* NumLock up */
}
}
else
{
flags = (extended) ? KBD_FLAGS_EXTENDED : 0;
flags |= (down) ? KBD_FLAGS_DOWN : KBD_FLAGS_RELEASE;
input->KeyboardEvent(input, flags, scancode);
if ((scancode == 0x3A) && (down == false)) /* caps lock was released */
{
uint32 syncFlags;
syncFlags = xf_kbd_get_toggle_keys_state(xfi);
input->SynchronizeEvent(input, syncFlags);
}
}
}
int xf_kbd_read_keyboard_state(xfInfo* xfi)
{
int dummy;
Window wdummy;
uint32 state = 0;
if (xfi->remote_app != true)
{
XQueryPointer(xfi->display, xfi->window->handle,
&wdummy, &wdummy, &dummy, &dummy, &dummy, &dummy, &state);
}
return state;
}
boolean xf_kbd_get_key_state(xfInfo* xfi, int state, int keysym)
{
int offset;
int modifierpos, key, keysymMask = 0;
KeyCode keycode = XKeysymToKeycode(xfi->display, keysym);
if (keycode == NoSymbol)
return false;
for (modifierpos = 0; modifierpos < 8; modifierpos++)
{
offset = xfi->modifier_map->max_keypermod * modifierpos;
for (key = 0; key < xfi->modifier_map->max_keypermod; key++)
{
if (xfi->modifier_map->modifiermap[offset + key] == keycode)
{
keysymMask |= 1 << modifierpos;
}
}
}
return (state & keysymMask) ? true : false;
}
int xf_kbd_get_toggle_keys_state(xfInfo* xfi)
{
int state;
int toggle_keys_state = 0;
state = xf_kbd_read_keyboard_state(xfi);
if (xf_kbd_get_key_state(xfi, state, XK_Scroll_Lock))
toggle_keys_state |= KBD_SYNC_SCROLL_LOCK;
if (xf_kbd_get_key_state(xfi, state, XK_Num_Lock))
toggle_keys_state |= KBD_SYNC_NUM_LOCK;
if (xf_kbd_get_key_state(xfi, state, XK_Caps_Lock))
toggle_keys_state |= KBD_SYNC_CAPS_LOCK;
if (xf_kbd_get_key_state(xfi, state, XK_Kana_Lock))
toggle_keys_state |= KBD_SYNC_KANA_LOCK;
return toggle_keys_state;
}
void xf_kbd_focus_in(xfInfo* xfi)
{
rdpInput* input;
uint32 syncFlags;
input = xfi->instance->input;
/* on focus in send a tab up like mstsc.exe */
input->KeyboardEvent(input, KBD_FLAGS_RELEASE, 0x0F);
/* synchronize toggle keys */
syncFlags = xf_kbd_get_toggle_keys_state(xfi);
input->SynchronizeEvent(input, syncFlags);
}
boolean xf_kbd_handle_special_keys(xfInfo* xfi, KeySym keysym)
{
if (keysym == XK_Return)
{
if ((xf_kbd_key_pressed(xfi, XK_Alt_L) || xf_kbd_key_pressed(xfi, XK_Alt_R))
&& (xf_kbd_key_pressed(xfi, XK_Control_L) || xf_kbd_key_pressed(xfi, XK_Control_R)))
{
/* Ctrl-Alt-Enter: toggle full screen */
xf_toggle_fullscreen(xfi);
return true;
}
}
return false;
}