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xsystem.c
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xsystem.c
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#ifdef DEBUG_X11
extern int _Xdebug; /* part of Xlib */
#endif
#include <sys/time.h>
#include <math.h>
#include "allegro5/allegro.h"
#include "allegro5/internal/aintern.h"
#include "allegro5/internal/aintern_bitmap.h"
#include "allegro5/internal/aintern_x.h"
#include "allegro5/internal/aintern_xcursor.h"
#include "allegro5/internal/aintern_xembed.h"
#include "allegro5/internal/aintern_xevents.h"
#include "allegro5/internal/aintern_xfullscreen.h"
#include "allegro5/internal/aintern_xkeyboard.h"
#include "allegro5/internal/aintern_xmouse.h"
#include "allegro5/internal/aintern_xsystem.h"
#include "allegro5/internal/aintern_xdnd.h"
#include "allegro5/platform/aintunix.h"
#include "allegro5/platform/aintxglx.h"
#include "allegro5/allegro_x.h"
#include "xicon.h"
ALLEGRO_DEBUG_CHANNEL("system")
static ALLEGRO_SYSTEM_INTERFACE *xglx_vt;
ALLEGRO_BITMAP *_al_xwin_initial_icon = NULL;
static bool xglx_inhibit_screensaver(bool inhibit);
/* Function: al_x_set_initial_icon
*/
bool al_x_set_initial_icon(ALLEGRO_BITMAP *bitmap)
{
ALLEGRO_STATE state;
al_store_state(&state, ALLEGRO_STATE_NEW_BITMAP_PARAMETERS);
al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP);
al_destroy_bitmap(_al_xwin_initial_icon);
_al_xwin_initial_icon = al_clone_bitmap(bitmap);
al_restore_state(&state);
return true;
}
static ALLEGRO_SYSTEM *xglx_initialize(int flags)
{
Display *x11display;
Display *gfxdisplay;
ALLEGRO_SYSTEM_XGLX *s;
(void)flags;
#ifdef DEBUG_X11
_Xdebug = 1;
#endif
XInitThreads();
/* Get an X11 display handle. */
x11display = XOpenDisplay(0);
if (x11display) {
/* Never ask. */
gfxdisplay = XOpenDisplay(0);
if (!gfxdisplay) {
ALLEGRO_ERROR("XOpenDisplay failed second time.\n");
XCloseDisplay(x11display);
return NULL;
}
}
else {
ALLEGRO_INFO("XOpenDisplay failed; assuming headless mode.\n");
gfxdisplay = NULL;
}
_al_unix_init_time();
s = al_calloc(1, sizeof *s);
_al_mutex_init_recursive(&s->lock);
_al_cond_init(&s->resized);
s->inhibit_screensaver = false;
s->screen_saver_query_available = false;
_al_vector_init(&s->system.displays, sizeof (ALLEGRO_DISPLAY_XGLX *));
s->system.vt = xglx_vt;
s->gfxdisplay = gfxdisplay;
s->x11display = x11display;
if (s->x11display) {
ALLEGRO_INFO("XGLX driver connected to X11 (%s %d).\n",
ServerVendor(s->x11display), VendorRelease(s->x11display));
ALLEGRO_INFO("X11 protocol version %d.%d.\n",
ProtocolVersion(s->x11display), ProtocolRevision(s->x11display));
/* We need to put *some* atom into the ClientMessage we send for
* faking mouse movements with al_set_mouse_xy - so let's ask X11
* for one here.
*/
s->AllegroAtom = XInternAtom(x11display, "AllegroAtom", False);
/* Message type for XEmbed protocol. */
s->XEmbedAtom = XInternAtom(x11display, "_XEMBED", False);
_al_display_xglx_init_dnd_atoms(s);
_al_thread_create(&s->xevents_thread, _al_xwin_background_thread, s);
s->have_xevents_thread = true;
ALLEGRO_INFO("events thread spawned.\n");
}
const char *binding = al_get_config_value(al_get_system_config(),
"keyboard", "toggle_mouse_grab_key");
if (binding) {
s->toggle_mouse_grab_keycode = _al_parse_key_binding(binding,
&s->toggle_mouse_grab_modifiers);
if (s->toggle_mouse_grab_keycode) {
ALLEGRO_DEBUG("Toggle mouse grab key: '%s'\n", binding);
}
else {
ALLEGRO_WARN("Cannot parse key binding '%s'\n", binding);
}
}
return &s->system;
}
static void xglx_shutdown_system(void)
{
ALLEGRO_SYSTEM *s = al_get_system_driver();
ALLEGRO_SYSTEM_XGLX *sx = (void *)s;
ALLEGRO_INFO("shutting down.\n");
if (sx->have_xevents_thread) {
_al_thread_join(&sx->xevents_thread);
sx->have_xevents_thread = false;
}
/* Close all open displays. */
while (_al_vector_size(&s->displays) > 0) {
ALLEGRO_DISPLAY **dptr = _al_vector_ref(&s->displays, 0);
ALLEGRO_DISPLAY *d = *dptr;
al_destroy_display(d);
}
_al_vector_free(&s->displays);
if (sx->inhibit_screensaver) {
xglx_inhibit_screensaver(false);
}
// Makes sure we wait for any commands sent to the X server when destroying the displays.
// Should make sure we don't shutdown before modes are restored.
if (sx->x11display) {
XSync(sx->x11display, False);
}
_al_xsys_mmon_exit(sx);
if (sx->x11display) {
XCloseDisplay(sx->x11display);
sx->x11display = None;
ALLEGRO_DEBUG("xsys: close x11display.\n");
}
if (sx->gfxdisplay) {
XCloseDisplay(sx->gfxdisplay);
sx->gfxdisplay = None;
}
al_free(sx);
}
static ALLEGRO_DISPLAY_INTERFACE *xglx_get_display_driver(void)
{
ALLEGRO_SYSTEM_XGLX *system = (ALLEGRO_SYSTEM_XGLX *)al_get_system_driver();
_al_mutex_lock(&system->lock);
/* _al_display_xglx_driver has global state. */
ALLEGRO_DISPLAY_INTERFACE *driver = _al_display_xglx_driver();
_al_mutex_unlock(&system->lock);
return driver;
}
static ALLEGRO_KEYBOARD_DRIVER *xglx_get_keyboard_driver(void)
{
return _al_xwin_keyboard_driver();
}
static ALLEGRO_MOUSE_DRIVER *xglx_get_mouse_driver(void)
{
return _al_xwin_mouse_driver();
}
static ALLEGRO_JOYSTICK_DRIVER *xglx_get_joystick_driver(void)
{
return _al_joystick_driver_list[0].driver;
}
static ALLEGRO_HAPTIC_DRIVER *xglx_get_haptic_driver(void)
{
return _al_haptic_driver_list[0].driver;
}
static ALLEGRO_TOUCH_INPUT_DRIVER *xglx_get_touch_driver(void)
{
return _al_touch_input_driver_list[0].driver;
}
static int xglx_get_num_video_adapters(void)
{
ALLEGRO_SYSTEM_XGLX *system = (void *)al_get_system_driver();
return _al_xglx_get_num_video_adapters(system);
}
static bool xglx_get_monitor_info(int adapter, ALLEGRO_MONITOR_INFO *info)
{
ALLEGRO_SYSTEM_XGLX *system = (void *)al_get_system_driver();
return _al_xglx_get_monitor_info(system, adapter, info);
}
static bool xglx_get_cursor_position(int *ret_x, int *ret_y)
{
ALLEGRO_SYSTEM_XGLX *system = (void *)al_get_system_driver();
Window root = RootWindow(system->x11display, 0);
Window child;
int wx, wy;
unsigned int mask;
_al_mutex_lock(&system->lock);
XQueryPointer(system->x11display, root, &root, &child, ret_x, ret_y,
&wx, &wy, &mask);
_al_mutex_unlock(&system->lock);
return true;
}
static bool xglx_inhibit_screensaver(bool inhibit)
{
ALLEGRO_SYSTEM_XGLX *system = (void *)al_get_system_driver();
int temp, version_min, version_max;
#ifdef ALLEGRO_XWINDOWS_WITH_XSCREENSAVER
if (!XScreenSaverQueryExtension(system->x11display, &temp, &temp) ||
!XScreenSaverQueryVersion(system->x11display, &version_max, &version_min) ||
version_max < 1 || (version_max == 1 && version_min < 1)) {
system->screen_saver_query_available = false;
}
else {
system->screen_saver_query_available = true;
/* X11 maintains a counter on the number of identical calls to
* XScreenSaverSuspend for a given display. So, only call it if 'inhibit' is
* different to the previous invocation; otherwise we'd need to call it an
* identical number of times with the negated value if there were a change.
*/
if (inhibit != system->inhibit_screensaver) {
XScreenSaverSuspend(system->x11display, inhibit);
}
}
#else
(void)temp;
(void)version_min;
(void)version_max;
#endif
system->inhibit_screensaver = inhibit;
return true;
}
static int xglx_get_num_display_modes(void)
{
int adapter = al_get_new_display_adapter();
ALLEGRO_SYSTEM_XGLX *s = (ALLEGRO_SYSTEM_XGLX *)al_get_system_driver();
return _al_xglx_get_num_display_modes(s, adapter);
}
static ALLEGRO_DISPLAY_MODE *xglx_get_display_mode(int mode, ALLEGRO_DISPLAY_MODE *dm)
{
int adapter = al_get_new_display_adapter();
ALLEGRO_SYSTEM_XGLX *s = (ALLEGRO_SYSTEM_XGLX *)al_get_system_driver();
return _al_xglx_get_display_mode(s, adapter, mode, dm);
}
static int xglx_get_monitor_dpi(int adapter)
{
ALLEGRO_MONITOR_INFO info;
ALLEGRO_SYSTEM_XGLX *s = (void *)al_get_system_driver();
int x2_mm;
int y2_mm;
int dpi_hori;
int dpi_vert;
if(!_al_xglx_get_monitor_info(s, adapter, &info)) {
return 0;
}
x2_mm = DisplayWidthMM(s->x11display, DefaultScreen(s->x11display));
y2_mm = DisplayHeightMM(s->x11display, DefaultScreen(s->x11display));
dpi_hori = (info.x2 - info.x1) / (_AL_INCHES_PER_MM * x2_mm);
dpi_vert = (info.y2 - info.y1) / (_AL_INCHES_PER_MM * y2_mm);
return sqrt(dpi_hori * dpi_vert);
}
/* Internal function to get a reference to this driver. */
ALLEGRO_SYSTEM_INTERFACE *_al_system_xglx_driver(void)
{
if (xglx_vt)
return xglx_vt;
xglx_vt = al_calloc(1, sizeof *xglx_vt);
xglx_vt->id = ALLEGRO_SYSTEM_ID_XGLX;
xglx_vt->initialize = xglx_initialize;
xglx_vt->get_display_driver = xglx_get_display_driver;
xglx_vt->get_keyboard_driver = xglx_get_keyboard_driver;
xglx_vt->get_mouse_driver = xglx_get_mouse_driver;
xglx_vt->get_joystick_driver = xglx_get_joystick_driver;
xglx_vt->get_haptic_driver = xglx_get_haptic_driver;
xglx_vt->get_touch_input_driver = xglx_get_touch_driver;
xglx_vt->get_num_display_modes = xglx_get_num_display_modes;
xglx_vt->get_display_mode = xglx_get_display_mode;
xglx_vt->shutdown_system = xglx_shutdown_system;
xglx_vt->get_num_video_adapters = xglx_get_num_video_adapters;
xglx_vt->get_monitor_info = xglx_get_monitor_info;
xglx_vt->get_monitor_dpi = xglx_get_monitor_dpi;
xglx_vt->create_mouse_cursor = _al_xwin_create_mouse_cursor;
xglx_vt->destroy_mouse_cursor = _al_xwin_destroy_mouse_cursor;
xglx_vt->get_cursor_position = xglx_get_cursor_position;
xglx_vt->grab_mouse = _al_xwin_grab_mouse;
xglx_vt->ungrab_mouse = _al_xwin_ungrab_mouse;
xglx_vt->get_path = _al_unix_get_path;
xglx_vt->inhibit_screensaver = xglx_inhibit_screensaver;
xglx_vt->get_time = _al_unix_get_time;
xglx_vt->rest = _al_unix_rest;
xglx_vt->init_timeout = _al_unix_init_timeout;
return xglx_vt;
}
/* vim: set sts=3 sw=3 et: */