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qemu/ui/sdl2.c
Gerd Hoffmann ee8c0b622c sdl: pass key event source to input layer 
So the input layer knows where the input is coming from
and input routing works correctly.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-05-26 08:42:43 +02:00

853 lines
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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. */
/* Avoid compiler warning because macro is redefined in SDL_syswm.h. */
#undef WIN32_LEAN_AND_MEAN
#include <SDL.h>
#if SDL_MAJOR_VERSION == 2
#include <SDL_syswm.h>
#include "qemu-common.h"
#include "ui/console.h"
#include "ui/input.h"
#include "sysemu/sysemu.h"
#include "sdl_zoom.h"
#include "sdl2-keymap.h"
static int sdl2_num_outputs;
static struct sdl2_state {
DisplayChangeListener dcl;
DisplaySurface *surface;
SDL_Texture *texture;
SDL_Window *real_window;
SDL_Renderer *real_renderer;
int idx;
int last_vm_running; /* per console for caption reasons */
int x, y;
} *sdl2_console;
static SDL_Surface *guest_sprite_surface;
static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
static bool gui_saved_scaling;
static int gui_saved_width;
static int gui_saved_height;
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 uint8_t modifiers_state[SDL_NUM_SCANCODES];
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 int scaling_active;
static Notifier mouse_mode_notifier;
static void sdl_update_caption(struct sdl2_state *scon);
static struct sdl2_state *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;
}
static void sdl_update(DisplayChangeListener *dcl,
int x, int y, int w, int h)
{
struct sdl2_state *scon = container_of(dcl, struct sdl2_state, dcl);
SDL_Rect rect;
DisplaySurface *surf = qemu_console_surface(dcl->con);
if (!surf) {
return;
}
if (!scon->texture) {
return;
}
rect.x = x;
rect.y = y;
rect.w = w;
rect.h = h;
SDL_UpdateTexture(scon->texture, NULL, surface_data(surf),
surface_stride(surf));
SDL_RenderCopy(scon->real_renderer, scon->texture, &rect, &rect);
SDL_RenderPresent(scon->real_renderer);
}
static void do_sdl_resize(struct sdl2_state *scon, int width, int height,
int bpp)
{
int flags;
if (scon->real_window && scon->real_renderer) {
if (width && height) {
SDL_RenderSetLogicalSize(scon->real_renderer, width, height);
SDL_SetWindowSize(scon->real_window, width, height);
} else {
SDL_DestroyRenderer(scon->real_renderer);
SDL_DestroyWindow(scon->real_window);
scon->real_renderer = NULL;
scon->real_window = NULL;
}
} else {
if (!width || !height) {
return;
}
flags = 0;
if (gui_fullscreen) {
flags |= SDL_WINDOW_FULLSCREEN;
} else {
flags |= SDL_WINDOW_RESIZABLE;
}
scon->real_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
width, height, flags);
scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
sdl_update_caption(scon);
}
}
static void sdl_switch(DisplayChangeListener *dcl,
DisplaySurface *new_surface)
{
struct sdl2_state *scon = container_of(dcl, struct sdl2_state, dcl);
int format = 0;
int idx = scon->idx;
DisplaySurface *old_surface = scon->surface;
/* temporary hack: allows to call sdl_switch to handle scaling changes */
if (new_surface) {
scon->surface = new_surface;
}
if (!new_surface && idx > 0) {
scon->surface = NULL;
}
if (new_surface == NULL) {
do_sdl_resize(scon, 0, 0, 0);
} else {
do_sdl_resize(scon, surface_width(scon->surface),
surface_height(scon->surface), 0);
}
if (old_surface && scon->texture) {
SDL_DestroyTexture(scon->texture);
scon->texture = NULL;
}
if (new_surface) {
if (!scon->texture) {
if (surface_bits_per_pixel(scon->surface) == 16) {
format = SDL_PIXELFORMAT_RGB565;
} else if (surface_bits_per_pixel(scon->surface) == 32) {
format = SDL_PIXELFORMAT_ARGB8888;
}
scon->texture = SDL_CreateTexture(scon->real_renderer, format,
SDL_TEXTUREACCESS_STREAMING,
surface_width(new_surface),
surface_height(new_surface));
}
}
}
static void reset_keys(struct sdl2_state *scon)
{
QemuConsole *con = scon ? scon->dcl.con : NULL;
int i;
for (i = 0; i < 256; i++) {
if (modifiers_state[i]) {
int qcode = sdl2_scancode_to_qcode[i];
qemu_input_event_send_key_qcode(con, qcode, false);
modifiers_state[i] = 0;
}
}
}
static void sdl_process_key(struct sdl2_state *scon,
SDL_KeyboardEvent *ev)
{
int qcode = sdl2_scancode_to_qcode[ev->keysym.scancode];
QemuConsole *con = scon ? scon->dcl.con : NULL;
switch (ev->keysym.scancode) {
#if 0
case SDL_SCANCODE_NUMLOCKCLEAR:
case SDL_SCANCODE_CAPSLOCK:
/* SDL does not send the key up event, so we generate it */
qemu_input_event_send_key_qcode(con, qcode, true);
qemu_input_event_send_key_qcode(con, qcode, false);
return;
#endif
case SDL_SCANCODE_LCTRL:
case SDL_SCANCODE_LSHIFT:
case SDL_SCANCODE_LALT:
case SDL_SCANCODE_LGUI:
case SDL_SCANCODE_RCTRL:
case SDL_SCANCODE_RSHIFT:
case SDL_SCANCODE_RALT:
case SDL_SCANCODE_RGUI:
if (ev->type == SDL_KEYUP) {
modifiers_state[ev->keysym.scancode] = 0;
} else {
modifiers_state[ev->keysym.scancode] = 1;
}
/* fall though */
default:
qemu_input_event_send_key_qcode(con, qcode,
ev->type == SDL_KEYDOWN);
}
}
static void sdl_update_caption(struct sdl2_state *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 mouse grab";
} else if (ctrl_grab) {
status = " - Press Right-Ctrl to exit mouse grab";
} else {
status = " - Press Ctrl-Alt to exit mouse 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;
}
if (qemu_input_is_absolute()) {
SDL_ShowCursor(1);
SDL_SetCursor(sdl_cursor_hidden);
} else {
SDL_SetRelativeMouseMode(SDL_TRUE);
}
}
static void sdl_show_cursor(void)
{
if (!cursor_hide) {
return;
}
if (!qemu_input_is_absolute()) {
SDL_SetRelativeMouseMode(SDL_FALSE);
SDL_ShowCursor(1);
if (guest_cursor &&
(gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
SDL_SetCursor(guest_sprite);
} else {
SDL_SetCursor(sdl_cursor_normal);
}
}
}
static void sdl_grab_start(struct sdl2_state *scon)
{
/*
* 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_state *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_state *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_state *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()) {
int scr_w, scr_h;
int max_w = 0, max_h = 0;
int off_x = 0, off_y = 0;
int cur_off_x = 0, cur_off_y = 0;
int i;
for (i = 0; i < sdl2_num_outputs; i++) {
struct sdl2_state *thiscon = &sdl2_console[i];
if (thiscon->real_window && thiscon->surface) {
SDL_GetWindowSize(thiscon->real_window, &scr_w, &scr_h);
cur_off_x = thiscon->x;
cur_off_y = thiscon->y;
if (scr_w + cur_off_x > max_w) {
max_w = scr_w + cur_off_x;
}
if (scr_h + cur_off_y > max_h) {
max_h = scr_h + cur_off_y;
}
if (i == scon->idx) {
off_x = cur_off_x;
off_y = cur_off_y;
}
}
}
qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X, off_x + x, max_w);
qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y, off_y + y, max_h);
} 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 sdl_scale(struct sdl2_state *scon, int width, int height)
{
int bpp = 0;
do_sdl_resize(scon, width, height, bpp);
scaling_active = 1;
}
static void toggle_full_screen(struct sdl2_state *scon)
{
int width = surface_width(scon->surface);
int height = surface_height(scon->surface);
int bpp = surface_bits_per_pixel(scon->surface);
gui_fullscreen = !gui_fullscreen;
if (gui_fullscreen) {
SDL_GetWindowSize(scon->real_window,
&gui_saved_width, &gui_saved_height);
gui_saved_scaling = scaling_active;
do_sdl_resize(scon, width, height, bpp);
scaling_active = 0;
gui_saved_grab = gui_grab;
sdl_grab_start(scon);
} else {
if (gui_saved_scaling) {
sdl_scale(scon, gui_saved_width, gui_saved_height);
} else {
do_sdl_resize(scon, width, height, 0);
}
if (!gui_saved_grab) {
sdl_grab_end(scon);
}
}
graphic_hw_invalidate(scon->dcl.con);
graphic_hw_update(scon->dcl.con);
}
static void handle_keydown(SDL_Event *ev)
{
int mod_state;
struct sdl2_state *scon = get_scon_from_window(ev->key.windowID);
if (alt_grab) {
mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
(gui_grab_code | KMOD_LSHIFT);
} else if (ctrl_grab) {
mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
} else {
mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
}
gui_key_modifier_pressed = mod_state;
if (gui_key_modifier_pressed) {
switch (ev->key.keysym.scancode) {
case SDL_SCANCODE_F:
toggle_full_screen(scon);
gui_keysym = 1;
break;
case SDL_SCANCODE_U:
if (scaling_active) {
scaling_active = 0;
sdl_switch(&scon->dcl, NULL);
graphic_hw_invalidate(scon->dcl.con);
graphic_hw_update(scon->dcl.con);
}
gui_keysym = 1;
break;
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);
sdl_scale(scon, width, height);
graphic_hw_invalidate(NULL);
graphic_hw_update(NULL);
gui_keysym = 1;
}
default:
break;
}
}
if (!gui_keysym) {
sdl_process_key(scon, &ev->key);
}
}
static void handle_keyup(SDL_Event *ev)
{
int mod_state;
struct sdl2_state *scon = get_scon_from_window(ev->key.windowID);
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. */
reset_keys(scon);
return;
}
gui_keysym = 0;
}
if (!gui_keysym) {
sdl_process_key(scon, &ev->key);
}
}
static void handle_mousemotion(SDL_Event *ev)
{
int max_x, max_y;
struct sdl2_state *scon = get_scon_from_window(ev->key.windowID);
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 && (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_state *scon = get_scon_from_window(ev->key.windowID);
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_state *scon = get_scon_from_window(ev->key.windowID);
SDL_MouseWheelEvent *wev = &ev->wheel;
InputButton btn;
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(DisplayChangeListener *dcl, SDL_Event *ev)
{
int w, h;
struct sdl2_state *scon = get_scon_from_window(ev->key.windowID);
switch (ev->window.event) {
case SDL_WINDOWEVENT_RESIZED:
sdl_scale(scon, ev->window.data1, ev->window.data2);
{
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);
}
graphic_hw_invalidate(scon->dcl.con);
graphic_hw_update(scon->dcl.con);
break;
case SDL_WINDOWEVENT_EXPOSED:
SDL_GetWindowSize(SDL_GetWindowFromID(ev->window.windowID), &w, &h);
sdl_update(dcl, 0, 0, w, h);
break;
case SDL_WINDOWEVENT_FOCUS_GAINED:
case SDL_WINDOWEVENT_ENTER:
if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
absolute_mouse_grab(scon);
}
break;
case SDL_WINDOWEVENT_FOCUS_LOST:
if (gui_grab && !gui_fullscreen) {
sdl_grab_end(scon);
}
break;
case SDL_WINDOWEVENT_RESTORED:
update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
break;
case SDL_WINDOWEVENT_MINIMIZED:
update_displaychangelistener(dcl, 500);
break;
case SDL_WINDOWEVENT_CLOSE:
if (!no_quit) {
no_shutdown = 0;
qemu_system_shutdown_request();
}
break;
}
}
static void sdl_refresh(DisplayChangeListener *dcl)
{
struct sdl2_state *scon = container_of(dcl, struct sdl2_state, dcl);
SDL_Event ev1, *ev = &ev1;
if (scon->last_vm_running != runstate_is_running()) {
scon->last_vm_running = runstate_is_running();
sdl_update_caption(scon);
}
graphic_hw_update(dcl->con);
while (SDL_PollEvent(ev)) {
switch (ev->type) {
case SDL_KEYDOWN:
handle_keydown(ev);
break;
case SDL_KEYUP:
handle_keyup(ev);
break;
case SDL_QUIT:
if (!no_quit) {
no_shutdown = 0;
qemu_system_shutdown_request();
}
break;
case SDL_MOUSEMOTION:
handle_mousemotion(ev);
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
handle_mousebutton(ev);
break;
case SDL_MOUSEWHEEL:
handle_mousewheel(ev);
break;
case SDL_WINDOWEVENT:
handle_windowevent(dcl, ev);
break;
default:
break;
}
}
}
static void sdl_mouse_warp(DisplayChangeListener *dcl,
int x, int y, int on)
{
struct sdl2_state *scon = container_of(dcl, struct sdl2_state, dcl);
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_ops = {
.dpy_name = "sdl",
.dpy_gfx_update = sdl_update,
.dpy_gfx_switch = sdl_switch,
.dpy_refresh = sdl_refresh,
.dpy_mouse_set = sdl_mouse_warp,
.dpy_cursor_define = sdl_mouse_define,
};
void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
{
int flags;
uint8_t data = 0;
char *filename;
int i;
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);
}
for (i = 0;; i++) {
QemuConsole *con = qemu_console_lookup_by_index(i);
if (!con || !qemu_console_is_graphic(con)) {
break;
}
}
sdl2_num_outputs = i;
sdl2_console = g_new0(struct sdl2_state, sdl2_num_outputs);
for (i = 0; i < sdl2_num_outputs; i++) {
QemuConsole *con = qemu_console_lookup_by_index(i);
sdl2_console[i].dcl.ops = &dcl_ops;
sdl2_console[i].dcl.con = con;
register_displaychangelistener(&sdl2_console[i].dcl);
sdl2_console[i].idx = i;
}
/* 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);
}
#endif
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