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qemu/ui/sdl2.c
Jindrich Makovicka 849bbe6035 sdl2: Ignore UI hotkeys after a focus change when GUI modifier is held 
When SDL2 windows change focus while a key is held, the window that
receives the focus also receives a new KeyDown event, without an
autorepeat flag. This means that if a WM places the qemu console
over the main window after Ctrl-Alt-2, the console closes immediately
after opening. Then, the main window receives the KeyDown event again
and the whole process repeats.

This patch makes the SDL2 UI ignore the KeyDown events on a window that
just received the focus, if the GUI modifier was held. The ignore flag
is reset on a first KeyUp event. This effectively works around the issue
above.

Signed-off-by: Jindrich Makovicka <makovick@gmail.com>
Message-Id: <20171117112258.5888-4-makovick@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-01-12 15:51:18 +01:00

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/*
* QEMU SDL display driver
*
* Copyright (c) 2003 Fabrice Bellard
*
* 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 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.
*/
/* Ported SDL 1.2 code to 2.0 by Dave Airlie. */
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "ui/console.h"
#include "ui/input.h"
#include "ui/sdl2.h"
#include "sysemu/sysemu.h"
static int sdl2_num_outputs;
static struct sdl2_console *sdl2_console;
static SDL_Surface *guest_sprite_surface;
static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
static int gui_saved_grab;
static int gui_fullscreen;
static int gui_noframe;
static int gui_key_modifier_pressed;
static int gui_keysym;
static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
static SDL_Cursor *sdl_cursor_normal;
static SDL_Cursor *sdl_cursor_hidden;
static int absolute_enabled;
static int guest_cursor;
static int guest_x, guest_y;
static SDL_Cursor *guest_sprite;
static Notifier mouse_mode_notifier;
#define SDL2_REFRESH_INTERVAL_BUSY 10
#define SDL2_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
/ SDL2_REFRESH_INTERVAL_BUSY + 1)
static void sdl_update_caption(struct sdl2_console *scon);
static struct sdl2_console *get_scon_from_window(uint32_t window_id)
{
int i;
for (i = 0; i < sdl2_num_outputs; i++) {
if (sdl2_console[i].real_window == SDL_GetWindowFromID(window_id)) {
return &sdl2_console[i];
}
}
return NULL;
}
void sdl2_window_create(struct sdl2_console *scon)
{
int flags = 0;
if (!scon->surface) {
return;
}
assert(!scon->real_window);
if (gui_fullscreen) {
flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
} else {
flags |= SDL_WINDOW_RESIZABLE;
}
if (scon->hidden) {
flags |= SDL_WINDOW_HIDDEN;
}
scon->real_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
surface_width(scon->surface),
surface_height(scon->surface),
flags);
scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
if (scon->opengl) {
scon->winctx = SDL_GL_GetCurrentContext();
}
sdl_update_caption(scon);
}
void sdl2_window_destroy(struct sdl2_console *scon)
{
if (!scon->real_window) {
return;
}
SDL_DestroyRenderer(scon->real_renderer);
scon->real_renderer = NULL;
SDL_DestroyWindow(scon->real_window);
scon->real_window = NULL;
}
void sdl2_window_resize(struct sdl2_console *scon)
{
if (!scon->real_window) {
return;
}
SDL_SetWindowSize(scon->real_window,
surface_width(scon->surface),
surface_height(scon->surface));
}
static void sdl2_redraw(struct sdl2_console *scon)
{
if (scon->opengl) {
#ifdef CONFIG_OPENGL
sdl2_gl_redraw(scon);
#endif
} else {
sdl2_2d_redraw(scon);
}
}
static void sdl_update_caption(struct sdl2_console *scon)
{
char win_title[1024];
char icon_title[1024];
const char *status = "";
if (!runstate_is_running()) {
status = " [Stopped]";
} else if (gui_grab) {
if (alt_grab) {
status = " - Press Ctrl-Alt-Shift to exit grab";
} else if (ctrl_grab) {
status = " - Press Right-Ctrl to exit grab";
} else {
status = " - Press Ctrl-Alt to exit grab";
}
}
if (qemu_name) {
snprintf(win_title, sizeof(win_title), "QEMU (%s-%d)%s", qemu_name,
scon->idx, status);
snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
} else {
snprintf(win_title, sizeof(win_title), "QEMU%s", status);
snprintf(icon_title, sizeof(icon_title), "QEMU");
}
if (scon->real_window) {
SDL_SetWindowTitle(scon->real_window, win_title);
}
}
static void sdl_hide_cursor(void)
{
if (!cursor_hide) {
return;
}
SDL_ShowCursor(SDL_DISABLE);
SDL_SetCursor(sdl_cursor_hidden);
if (!qemu_input_is_absolute()) {
SDL_SetRelativeMouseMode(SDL_TRUE);
}
}
static void sdl_show_cursor(void)
{
if (!cursor_hide) {
return;
}
if (!qemu_input_is_absolute()) {
SDL_SetRelativeMouseMode(SDL_FALSE);
}
if (guest_cursor &&
(gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
SDL_SetCursor(guest_sprite);
} else {
SDL_SetCursor(sdl_cursor_normal);
}
SDL_ShowCursor(SDL_ENABLE);
}
static void sdl_grab_start(struct sdl2_console *scon)
{
QemuConsole *con = scon ? scon->dcl.con : NULL;
if (!con || !qemu_console_is_graphic(con)) {
return;
}
/*
* If the application is not active, do not try to enter grab state. This
* prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
* application (SDL bug).
*/
if (!(SDL_GetWindowFlags(scon->real_window) & SDL_WINDOW_INPUT_FOCUS)) {
return;
}
if (guest_cursor) {
SDL_SetCursor(guest_sprite);
if (!qemu_input_is_absolute() && !absolute_enabled) {
SDL_WarpMouseInWindow(scon->real_window, guest_x, guest_y);
}
} else {
sdl_hide_cursor();
}
SDL_SetWindowGrab(scon->real_window, SDL_TRUE);
gui_grab = 1;
sdl_update_caption(scon);
}
static void sdl_grab_end(struct sdl2_console *scon)
{
SDL_SetWindowGrab(scon->real_window, SDL_FALSE);
gui_grab = 0;
sdl_show_cursor();
sdl_update_caption(scon);
}
static void absolute_mouse_grab(struct sdl2_console *scon)
{
int mouse_x, mouse_y;
int scr_w, scr_h;
SDL_GetMouseState(&mouse_x, &mouse_y);
SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
if (mouse_x > 0 && mouse_x < scr_w - 1 &&
mouse_y > 0 && mouse_y < scr_h - 1) {
sdl_grab_start(scon);
}
}
static void sdl_mouse_mode_change(Notifier *notify, void *data)
{
if (qemu_input_is_absolute()) {
if (!absolute_enabled) {
absolute_enabled = 1;
absolute_mouse_grab(&sdl2_console[0]);
}
} else if (absolute_enabled) {
if (!gui_fullscreen) {
sdl_grab_end(&sdl2_console[0]);
}
absolute_enabled = 0;
}
}
static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
int x, int y, int state)
{
static uint32_t bmap[INPUT_BUTTON__MAX] = {
[INPUT_BUTTON_LEFT] = SDL_BUTTON(SDL_BUTTON_LEFT),
[INPUT_BUTTON_MIDDLE] = SDL_BUTTON(SDL_BUTTON_MIDDLE),
[INPUT_BUTTON_RIGHT] = SDL_BUTTON(SDL_BUTTON_RIGHT),
};
static uint32_t prev_state;
if (prev_state != state) {
qemu_input_update_buttons(scon->dcl.con, bmap, prev_state, state);
prev_state = state;
}
if (qemu_input_is_absolute()) {
qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X,
x, 0, surface_width(scon->surface));
qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y,
y, 0, surface_height(scon->surface));
} else {
if (guest_cursor) {
x -= guest_x;
y -= guest_y;
guest_x += x;
guest_y += y;
dx = x;
dy = y;
}
qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_X, dx);
qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_Y, dy);
}
qemu_input_event_sync();
}
static void toggle_full_screen(struct sdl2_console *scon)
{
gui_fullscreen = !gui_fullscreen;
if (gui_fullscreen) {
SDL_SetWindowFullscreen(scon->real_window,
SDL_WINDOW_FULLSCREEN_DESKTOP);
gui_saved_grab = gui_grab;
sdl_grab_start(scon);
} else {
if (!gui_saved_grab) {
sdl_grab_end(scon);
}
SDL_SetWindowFullscreen(scon->real_window, 0);
}
sdl2_redraw(scon);
}
static int get_mod_state(void)
{
SDL_Keymod mod = SDL_GetModState();
if (alt_grab) {
return (mod & (gui_grab_code | KMOD_LSHIFT)) ==
(gui_grab_code | KMOD_LSHIFT);
} else if (ctrl_grab) {
return (mod & KMOD_RCTRL) == KMOD_RCTRL;
} else {
return (mod & gui_grab_code) == gui_grab_code;
}
}
static void handle_keydown(SDL_Event *ev)
{
int win;
struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
gui_key_modifier_pressed = get_mod_state();
if (!scon->ignore_hotkeys && gui_key_modifier_pressed && !ev->key.repeat) {
switch (ev->key.keysym.scancode) {
case SDL_SCANCODE_2:
case SDL_SCANCODE_3:
case SDL_SCANCODE_4:
case SDL_SCANCODE_5:
case SDL_SCANCODE_6:
case SDL_SCANCODE_7:
case SDL_SCANCODE_8:
case SDL_SCANCODE_9:
if (gui_grab) {
sdl_grab_end(scon);
}
win = ev->key.keysym.scancode - SDL_SCANCODE_1;
if (win < sdl2_num_outputs) {
sdl2_console[win].hidden = !sdl2_console[win].hidden;
if (sdl2_console[win].real_window) {
if (sdl2_console[win].hidden) {
SDL_HideWindow(sdl2_console[win].real_window);
} else {
SDL_ShowWindow(sdl2_console[win].real_window);
}
}
gui_keysym = 1;
}
break;
case SDL_SCANCODE_F:
toggle_full_screen(scon);
gui_keysym = 1;
break;
case SDL_SCANCODE_U:
sdl2_window_destroy(scon);
sdl2_window_create(scon);
if (!scon->opengl) {
/* re-create scon->texture */
sdl2_2d_switch(&scon->dcl, scon->surface);
}
gui_keysym = 1;
break;
#if 0
case SDL_SCANCODE_KP_PLUS:
case SDL_SCANCODE_KP_MINUS:
if (!gui_fullscreen) {
int scr_w, scr_h;
int width, height;
SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
width = MAX(scr_w + (ev->key.keysym.scancode ==
SDL_SCANCODE_KP_PLUS ? 50 : -50),
160);
height = (surface_height(scon->surface) * width) /
surface_width(scon->surface);
fprintf(stderr, "%s: scale to %dx%d\n",
__func__, width, height);
sdl_scale(scon, width, height);
sdl2_redraw(scon);
gui_keysym = 1;
}
#endif
default:
break;
}
}
if (!gui_keysym) {
sdl2_process_key(scon, &ev->key);
}
}
static void handle_keyup(SDL_Event *ev)
{
int mod_state;
struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
scon->ignore_hotkeys = false;
if (!alt_grab) {
mod_state = (ev->key.keysym.mod & gui_grab_code);
} else {
mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
}
if (!mod_state && gui_key_modifier_pressed) {
gui_key_modifier_pressed = 0;
if (gui_keysym == 0) {
/* exit/enter grab if pressing Ctrl-Alt */
if (!gui_grab) {
sdl_grab_start(scon);
} else if (!gui_fullscreen) {
sdl_grab_end(scon);
}
/* SDL does not send back all the modifiers key, so we must
* correct it. */
sdl2_reset_keys(scon);
return;
}
sdl2_reset_keys(scon);
gui_keysym = 0;
}
if (!gui_keysym) {
sdl2_process_key(scon, &ev->key);
}
}
static void handle_textinput(SDL_Event *ev)
{
struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
QemuConsole *con = scon ? scon->dcl.con : NULL;
if (qemu_console_is_graphic(con)) {
return;
}
kbd_put_string_console(con, ev->text.text, strlen(ev->text.text));
}
static void handle_mousemotion(SDL_Event *ev)
{
int max_x, max_y;
struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
if (!qemu_console_is_graphic(scon->dcl.con)) {
return;
}
if (qemu_input_is_absolute() || absolute_enabled) {
int scr_w, scr_h;
SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
max_x = scr_w - 1;
max_y = scr_h - 1;
if (gui_grab && !gui_fullscreen
&& (ev->motion.x == 0 || ev->motion.y == 0 ||
ev->motion.x == max_x || ev->motion.y == max_y)) {
sdl_grab_end(scon);
}
if (!gui_grab &&
(ev->motion.x > 0 && ev->motion.x < max_x &&
ev->motion.y > 0 && ev->motion.y < max_y)) {
sdl_grab_start(scon);
}
}
if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
sdl_send_mouse_event(scon, ev->motion.xrel, ev->motion.yrel,
ev->motion.x, ev->motion.y, ev->motion.state);
}
}
static void handle_mousebutton(SDL_Event *ev)
{
int buttonstate = SDL_GetMouseState(NULL, NULL);
SDL_MouseButtonEvent *bev;
struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
if (!qemu_console_is_graphic(scon->dcl.con)) {
return;
}
bev = &ev->button;
if (!gui_grab && !qemu_input_is_absolute()) {
if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
/* start grabbing all events */
sdl_grab_start(scon);
}
} else {
if (ev->type == SDL_MOUSEBUTTONDOWN) {
buttonstate |= SDL_BUTTON(bev->button);
} else {
buttonstate &= ~SDL_BUTTON(bev->button);
}
sdl_send_mouse_event(scon, 0, 0, bev->x, bev->y, buttonstate);
}
}
static void handle_mousewheel(SDL_Event *ev)
{
struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
SDL_MouseWheelEvent *wev = &ev->wheel;
InputButton btn;
if (!qemu_console_is_graphic(scon->dcl.con)) {
return;
}
if (wev->y > 0) {
btn = INPUT_BUTTON_WHEEL_UP;
} else if (wev->y < 0) {
btn = INPUT_BUTTON_WHEEL_DOWN;
} else {
return;
}
qemu_input_queue_btn(scon->dcl.con, btn, true);
qemu_input_event_sync();
qemu_input_queue_btn(scon->dcl.con, btn, false);
qemu_input_event_sync();
}
static void handle_windowevent(SDL_Event *ev)
{
struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
if (!scon) {
return;
}
switch (ev->window.event) {
case SDL_WINDOWEVENT_RESIZED:
{
QemuUIInfo info;
memset(&info, 0, sizeof(info));
info.width = ev->window.data1;
info.height = ev->window.data2;
dpy_set_ui_info(scon->dcl.con, &info);
}
sdl2_redraw(scon);
break;
case SDL_WINDOWEVENT_EXPOSED:
sdl2_redraw(scon);
break;
case SDL_WINDOWEVENT_FOCUS_GAINED:
case SDL_WINDOWEVENT_ENTER:
if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
absolute_mouse_grab(scon);
}
/* If a new console window opened using a hotkey receives the
* focus, SDL sends another KEYDOWN event to the new window,
* closing the console window immediately after.
*
* Work around this by ignoring further hotkey events until a
* key is released.
*/
scon->ignore_hotkeys = get_mod_state();
break;
case SDL_WINDOWEVENT_FOCUS_LOST:
if (gui_grab && !gui_fullscreen) {
sdl_grab_end(scon);
}
break;
case SDL_WINDOWEVENT_RESTORED:
update_displaychangelistener(&scon->dcl, GUI_REFRESH_INTERVAL_DEFAULT);
break;
case SDL_WINDOWEVENT_MINIMIZED:
update_displaychangelistener(&scon->dcl, 500);
break;
case SDL_WINDOWEVENT_CLOSE:
if (qemu_console_is_graphic(scon->dcl.con)) {
if (!no_quit) {
no_shutdown = 0;
qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
}
} else {
SDL_HideWindow(scon->real_window);
scon->hidden = true;
}
break;
case SDL_WINDOWEVENT_SHOWN:
scon->hidden = false;
break;
case SDL_WINDOWEVENT_HIDDEN:
scon->hidden = true;
break;
}
}
void sdl2_poll_events(struct sdl2_console *scon)
{
SDL_Event ev1, *ev = &ev1;
int idle = 1;
if (scon->last_vm_running != runstate_is_running()) {
scon->last_vm_running = runstate_is_running();
sdl_update_caption(scon);
}
while (SDL_PollEvent(ev)) {
switch (ev->type) {
case SDL_KEYDOWN:
idle = 0;
handle_keydown(ev);
break;
case SDL_KEYUP:
idle = 0;
handle_keyup(ev);
break;
case SDL_TEXTINPUT:
idle = 0;
handle_textinput(ev);
break;
case SDL_QUIT:
if (!no_quit) {
no_shutdown = 0;
qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
}
break;
case SDL_MOUSEMOTION:
idle = 0;
handle_mousemotion(ev);
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
idle = 0;
handle_mousebutton(ev);
break;
case SDL_MOUSEWHEEL:
idle = 0;
handle_mousewheel(ev);
break;
case SDL_WINDOWEVENT:
handle_windowevent(ev);
break;
default:
break;
}
}
if (idle) {
if (scon->idle_counter < SDL2_MAX_IDLE_COUNT) {
scon->idle_counter++;
if (scon->idle_counter >= SDL2_MAX_IDLE_COUNT) {
scon->dcl.update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
}
}
} else {
scon->idle_counter = 0;
scon->dcl.update_interval = SDL2_REFRESH_INTERVAL_BUSY;
}
}
static void sdl_mouse_warp(DisplayChangeListener *dcl,
int x, int y, int on)
{
struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
if (!qemu_console_is_graphic(scon->dcl.con)) {
return;
}
if (on) {
if (!guest_cursor) {
sdl_show_cursor();
}
if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
SDL_SetCursor(guest_sprite);
if (!qemu_input_is_absolute() && !absolute_enabled) {
SDL_WarpMouseInWindow(scon->real_window, x, y);
}
}
} else if (gui_grab) {
sdl_hide_cursor();
}
guest_cursor = on;
guest_x = x, guest_y = y;
}
static void sdl_mouse_define(DisplayChangeListener *dcl,
QEMUCursor *c)
{
if (guest_sprite) {
SDL_FreeCursor(guest_sprite);
}
if (guest_sprite_surface) {
SDL_FreeSurface(guest_sprite_surface);
}
guest_sprite_surface =
SDL_CreateRGBSurfaceFrom(c->data, c->width, c->height, 32, c->width * 4,
0xff0000, 0x00ff00, 0xff, 0xff000000);
if (!guest_sprite_surface) {
fprintf(stderr, "Failed to make rgb surface from %p\n", c);
return;
}
guest_sprite = SDL_CreateColorCursor(guest_sprite_surface,
c->hot_x, c->hot_y);
if (!guest_sprite) {
fprintf(stderr, "Failed to make color cursor from %p\n", c);
return;
}
if (guest_cursor &&
(gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
SDL_SetCursor(guest_sprite);
}
}
static void sdl_cleanup(void)
{
if (guest_sprite) {
SDL_FreeCursor(guest_sprite);
}
SDL_QuitSubSystem(SDL_INIT_VIDEO);
}
static const DisplayChangeListenerOps dcl_2d_ops = {
.dpy_name = "sdl2-2d",
.dpy_gfx_update = sdl2_2d_update,
.dpy_gfx_switch = sdl2_2d_switch,
.dpy_gfx_check_format = sdl2_2d_check_format,
.dpy_refresh = sdl2_2d_refresh,
.dpy_mouse_set = sdl_mouse_warp,
.dpy_cursor_define = sdl_mouse_define,
};
#ifdef CONFIG_OPENGL
static const DisplayChangeListenerOps dcl_gl_ops = {
.dpy_name = "sdl2-gl",
.dpy_gfx_update = sdl2_gl_update,
.dpy_gfx_switch = sdl2_gl_switch,
.dpy_gfx_check_format = console_gl_check_format,
.dpy_refresh = sdl2_gl_refresh,
.dpy_mouse_set = sdl_mouse_warp,
.dpy_cursor_define = sdl_mouse_define,
.dpy_gl_ctx_create = sdl2_gl_create_context,
.dpy_gl_ctx_destroy = sdl2_gl_destroy_context,
.dpy_gl_ctx_make_current = sdl2_gl_make_context_current,
.dpy_gl_ctx_get_current = sdl2_gl_get_current_context,
.dpy_gl_scanout_disable = sdl2_gl_scanout_disable,
.dpy_gl_scanout_texture = sdl2_gl_scanout_texture,
.dpy_gl_update = sdl2_gl_scanout_flush,
};
#endif
void sdl_display_early_init(int opengl)
{
switch (opengl) {
case -1: /* default */
case 0: /* off */
break;
case 1: /* on */
#ifdef CONFIG_OPENGL
display_opengl = 1;
#endif
break;
default:
g_assert_not_reached();
break;
}
}
void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
{
int flags;
uint8_t data = 0;
char *filename;
int i;
SDL_SysWMinfo info;
if (no_frame) {
gui_noframe = 1;
}
#ifdef __linux__
/* on Linux, SDL may use fbcon|directfb|svgalib when run without
* accessible $DISPLAY to open X11 window. This is often the case
* when qemu is run using sudo. But in this case, and when actually
* run in X11 environment, SDL fights with X11 for the video card,
* making current display unavailable, often until reboot.
* So make x11 the default SDL video driver if this variable is unset.
* This is a bit hackish but saves us from bigger problem.
* Maybe it's a good idea to fix this in SDL instead.
*/
setenv("SDL_VIDEODRIVER", "x11", 0);
#endif
flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
if (SDL_Init(flags)) {
fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
SDL_GetError());
exit(1);
}
SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
memset(&info, 0, sizeof(info));
SDL_VERSION(&info.version);
for (i = 0;; i++) {
QemuConsole *con = qemu_console_lookup_by_index(i);
if (!con) {
break;
}
}
sdl2_num_outputs = i;
if (sdl2_num_outputs == 0) {
return;
}
sdl2_console = g_new0(struct sdl2_console, sdl2_num_outputs);
for (i = 0; i < sdl2_num_outputs; i++) {
QemuConsole *con = qemu_console_lookup_by_index(i);
assert(con != NULL);
if (!qemu_console_is_graphic(con)) {
sdl2_console[i].hidden = true;
}
sdl2_console[i].idx = i;
#ifdef CONFIG_OPENGL
sdl2_console[i].opengl = display_opengl;
sdl2_console[i].dcl.ops = display_opengl ? &dcl_gl_ops : &dcl_2d_ops;
#else
sdl2_console[i].opengl = 0;
sdl2_console[i].dcl.ops = &dcl_2d_ops;
#endif
sdl2_console[i].dcl.con = con;
register_displaychangelistener(&sdl2_console[i].dcl);
#if defined(SDL_VIDEO_DRIVER_WINDOWS) || defined(SDL_VIDEO_DRIVER_X11)
if (SDL_GetWindowWMInfo(sdl2_console[i].real_window, &info)) {
#if defined(SDL_VIDEO_DRIVER_WINDOWS)
qemu_console_set_window_id(con, (uintptr_t)info.info.win.window);
#elif defined(SDL_VIDEO_DRIVER_X11)
qemu_console_set_window_id(con, info.info.x11.window);
#endif
}
#endif
}
/* Load a 32x32x4 image. White pixels are transparent. */
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
if (filename) {
SDL_Surface *image = SDL_LoadBMP(filename);
if (image) {
uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
SDL_SetColorKey(image, SDL_TRUE, colorkey);
SDL_SetWindowIcon(sdl2_console[0].real_window, image);
}
g_free(filename);
}
if (full_screen) {
gui_fullscreen = 1;
sdl_grab_start(0);
}
mouse_mode_notifier.notify = sdl_mouse_mode_change;
qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
gui_grab = 0;
sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
sdl_cursor_normal = SDL_GetCursor();
atexit(sdl_cleanup);
}
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