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[client] main: add interface for modules to register key binds

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This commit is contained in:
Geoffrey McRae 2019-03-28 23:23:15 +11:00
parent 03cb61f746
commit fd4cfc2ff3
3 changed files with 128 additions and 30 deletions
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2
VERSION
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@ -1 +1 @@
a12-122-g8eed25b469+1
a12-124-g5aef2422e0+1

41
client/include/interface/app.h Normal file
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@ -0,0 +1,41 @@
/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program 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 2 of the License, or (at your option) any later
version.
This program 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
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#pragma once
#include <SDL2/SDL.h>
typedef struct KeybindHandle * KeybindHandle;
typedef void (*SuperEventFn)(SDL_Scancode key, void * opaque);
/**
* Register a handler for the <super>+<key> combination
* @param key The scancode to register
* @param callback The function to be called when the combination is pressed
* @param opaque A pointer to be passed to the callback, may be NULL
* @retval A handle for the binding or NULL on failure.
* The caller is required to release the handle via `app_release_keybind` when it is no longer required
*/
KeybindHandle app_register_keybind(SDL_Scancode key, SuperEventFn callback, void * opaque);
/**
* Release an existing key binding
* @param handle A pointer to the keybind handle to release, may be NULL
*/
void app_release_keybind(KeybindHandle * handle);

115
client/src/main.c
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@ -45,9 +45,14 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "dynamic/renderers.h"
#include "dynamic/clipboards.h"
#include "interface/app.h"
struct AppState
{
bool running;
bool escapeActive;
SDL_Scancode escapeAction;
KeybindHandle bindings[SDL_NUM_SCANCODES];
bool keyDown[SDL_NUM_SCANCODES];
bool haveSrcSize;
@ -114,7 +119,7 @@ struct AppParams
bool ignoreQuit;
bool allowScreensaver;
bool grabKeyboard;
SDL_Scancode captureKey;
SDL_Scancode escapeKey;
bool disableAlerts;
bool forceRenderer;
@ -153,7 +158,7 @@ struct AppParams params =
.ignoreQuit = false,
.allowScreensaver = true,
.grabKeyboard = true,
.captureKey = SDL_SCANCODE_SCROLLLOCK,
.escapeKey = SDL_SCANCODE_SCROLLLOCK,
.disableAlerts = false,
.forceRenderer = false,
.windowTitle = "Looking Glass (Client)"
@ -166,6 +171,13 @@ struct CBRequest
void * opaque;
};
struct KeybindHandle
{
SDL_Scancode key;
SuperEventFn callback;
void * opaque;
};
// forwards
static int cursorThread(void * unused);
static int renderThread(void * unused);
@ -792,27 +804,16 @@ int eventFilter(void * userdata, SDL_Event * event)
case SDL_KEYDOWN:
{
SDL_Scancode sc = event->key.keysym.scancode;
if (sc == params.captureKey)
if (sc == params.escapeKey)
{
if (event->key.repeat)
break;
state.escapeActive = true;
state.escapeAction = sc;
break;
}
serverMode = !serverMode;
spice_mouse_mode(serverMode);
SDL_SetRelativeMouseMode(serverMode);
SDL_SetWindowGrab(state.window, serverMode);
DEBUG_INFO("Server Mode: %s", serverMode ? "on" : "off");
if (state.lgr && !params.disableAlerts)
state.lgr->on_alert(
state.lgrData,
serverMode ? LG_ALERT_SUCCESS : LG_ALERT_WARNING,
serverMode ? "Capture Enabled" : "Capture Disabled",
NULL
);
if (!serverMode)
realignGuest = true;
if (state.escapeActive)
{
state.escapeAction = sc;
break;
}
@ -836,8 +837,36 @@ int eventFilter(void * userdata, SDL_Event * event)
case SDL_KEYUP:
{
SDL_Scancode sc = event->key.keysym.scancode;
if (sc == params.captureKey)
break;
if (state.escapeActive)
{
if (state.escapeAction == params.escapeKey)
{
serverMode = !serverMode;
spice_mouse_mode(serverMode);
SDL_SetRelativeMouseMode(serverMode);
SDL_SetWindowGrab(state.window, serverMode);
DEBUG_INFO("Server Mode: %s", serverMode ? "on" : "off");
if (state.lgr && !params.disableAlerts)
state.lgr->on_alert(
state.lgrData,
serverMode ? LG_ALERT_SUCCESS : LG_ALERT_WARNING,
serverMode ? "Capture Enabled" : "Capture Disabled",
NULL
);
if (!serverMode)
realignGuest = true;
}
else
{
KeybindHandle handle = state.bindings[sc];
if (handle)
handle->callback(sc, handle->opaque);
}
state.escapeActive = false;
}
// avoid sending key up events when we didn't send a down
if (!state.keyDown[sc])
@ -1370,7 +1399,7 @@ void doHelp(char * app)
" -Q Ignore requests to quit (ie: Alt+F4)\n"
" -S Disable the screensaver\n"
" -G Don't capture the keyboard in capture mode\n"
" -m CODE Specify the capture key [current: %u (%s)]\n"
" -m CODE Specify the escape key [current: %u (%s)]\n"
" See https://wiki.libsdl.org/SDLScancodeLookup for valid values\n"
" -q Disable alert messages [current: %s]\n"
" -t TITLE Use a custom title for the main window\n"
@ -1388,9 +1417,9 @@ void doHelp(char * app)
params.center ? "center" : y,
params.w,
params.h,
params.captureKey,
params.escapeKey,
params.disableAlerts ? "disabled" : "enabled",
SDL_GetScancodeName(params.captureKey)
SDL_GetScancodeName(params.escapeKey)
);
}
@ -1515,7 +1544,7 @@ static bool load_config(const char * configFile)
params.fpsLimit = (unsigned int)itmp;
}
if (config_setting_lookup_int(global, "captureKey", &itmp))
if (config_setting_lookup_int(global, "escapeKey", &itmp))
{
if (itmp <= SDL_SCANCODE_UNKNOWN || itmp > SDL_SCANCODE_APP2)
{
@ -1523,7 +1552,7 @@ static bool load_config(const char * configFile)
config_destroy(&cfg);
return false;
}
params.captureKey = (SDL_Scancode)itmp;
params.escapeKey = (SDL_Scancode)itmp;
}
if (config_setting_lookup_string(global, "windowTitle", &stmp))
@ -1882,7 +1911,7 @@ int main(int argc, char * argv[])
continue;
case 'm':
params.captureKey = atoi(optarg);
params.escapeKey = atoi(optarg);
continue;
case 'q':
@ -1927,3 +1956,31 @@ int main(int argc, char * argv[])
return ret;
}
KeybindHandle app_register_keybind(SDL_Scancode key, SuperEventFn callback, void * opaque)
{
// don't allow duplicate binds
if (state.bindings[key])
{
DEBUG_INFO("Key already bound");
return NULL;
}
KeybindHandle handle = (KeybindHandle)malloc(sizeof(struct KeybindHandle));
handle->key = key;
handle->callback = callback;
handle->opaque = opaque;
state.bindings[key] = handle;
return handle;
}
void app_release_keybind(KeybindHandle * handle)
{
if (!handle)
return;
state.bindings[(*handle)->key] = NULL;
free(*handle);
*handle = NULL;
}