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qemu-patch-raspberry4/ui/sdl.c
Eric Blake d20a580bc0 qapi: Change munging of CamelCase enum values 
When munging enum values, the fact that we were passing the entire
prefix + value through camel_to_upper() meant that enum values
spelled with CamelCase could be turned into CAMEL_CASE.  However,
this provides a potential collision (both OneTwo and One-Two would
munge into ONE_TWO) for enum types, when the same two names are
valid side-by-side as QAPI member names.  By changing the generation
of enum constants to always be prefix + '_' + c_name(value,
False).upper(), and ensuring that there are no case collisions (in
the next patches), we no longer have to worry about names that
would be distinct as QAPI members but collide as variant tag names,
without having to think about what munging the heuristics in
camel_to_upper() will actually perform on an enum value.

Making the change will affect enums that did not follow coding
conventions, using 'CamelCase' rather than desired 'lower-case'.

Thankfully, there are only two culprits: InputButton and ErrorClass.
We already tweaked ErrorClass to make it an alias of QapiErrorClass,
where only the alias needs changing rather than the whole tree.  So
the bulk of this change is modifying INPUT_BUTTON_WHEEL_UP to the
new INPUT_BUTTON_WHEELUP (and likewise for WHEELDOWN).  That part
of this commit may later need reverting if we rename the enum
constants from 'WheelUp' to 'wheel-up' as part of moving
x-input-send-event to a stable interface; but at least we have
documentation bread crumbs in place to remind us (commit 513e7cd),
and it matches the fact that SDL constants are also spelled
SDL_BUTTON_WHEELUP.

Suggested by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1447836791-369-27-git-send-email-eblake@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-12-17 08:21:28 +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.
*/
/* Avoid compiler warning because macro is redefined in SDL_syswm.h. */
#undef WIN32_LEAN_AND_MEAN
#include <SDL.h>
#include <SDL_syswm.h>
#include "qemu-common.h"
#include "ui/console.h"
#include "ui/input.h"
#include "sysemu/sysemu.h"
#include "x_keymap.h"
#include "sdl_zoom.h"
static DisplayChangeListener *dcl;
static DisplaySurface *surface;
static SDL_Surface *real_screen;
static SDL_Surface *guest_screen = NULL;
static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
static int last_vm_running;
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[256];
static SDL_Cursor *sdl_cursor_normal;
static SDL_Cursor *sdl_cursor_hidden;
static int absolute_enabled = 0;
static int guest_cursor = 0;
static int guest_x, guest_y;
static SDL_Cursor *guest_sprite = NULL;
static SDL_PixelFormat host_format;
static int scaling_active = 0;
static Notifier mouse_mode_notifier;
#if 0
#define DEBUG_SDL
#endif
static void sdl_update(DisplayChangeListener *dcl,
int x, int y, int w, int h)
{
SDL_Rect rec;
rec.x = x;
rec.y = y;
rec.w = w;
rec.h = h;
#ifdef DEBUG_SDL
printf("SDL: Updating x=%d y=%d w=%d h=%d (scaling: %d)\n",
x, y, w, h, scaling_active);
#endif
if (guest_screen) {
if (!scaling_active) {
SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
} else {
if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
fprintf(stderr, "Zoom blit failed\n");
exit(1);
}
}
}
SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
}
static void do_sdl_resize(int width, int height, int bpp)
{
int flags;
SDL_Surface *tmp_screen;
#ifdef DEBUG_SDL
printf("SDL: Resizing to %dx%d bpp %d\n", width, height, bpp);
#endif
flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
if (gui_fullscreen) {
flags |= SDL_FULLSCREEN;
} else {
flags |= SDL_RESIZABLE;
}
if (gui_noframe)
flags |= SDL_NOFRAME;
tmp_screen = SDL_SetVideoMode(width, height, bpp, flags);
if (!real_screen) {
if (!tmp_screen) {
fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n",
width, height, bpp, SDL_GetError());
exit(1);
}
} else {
/*
* Revert to the previous video mode if the change of resizing or
* resolution failed.
*/
if (!tmp_screen) {
fprintf(stderr, "Failed to set SDL display (%dx%dx%d): %s\n",
width, height, bpp, SDL_GetError());
return;
}
}
real_screen = tmp_screen;
}
static void sdl_switch(DisplayChangeListener *dcl,
DisplaySurface *new_surface)
{
PixelFormat pf;
/* temporary hack: allows to call sdl_switch to handle scaling changes */
if (new_surface) {
surface = new_surface;
}
pf = qemu_pixelformat_from_pixman(surface->format);
if (!scaling_active) {
do_sdl_resize(surface_width(surface), surface_height(surface), 0);
} else if (real_screen->format->BitsPerPixel !=
surface_bits_per_pixel(surface)) {
do_sdl_resize(real_screen->w, real_screen->h,
surface_bits_per_pixel(surface));
}
if (guest_screen != NULL) {
SDL_FreeSurface(guest_screen);
}
#ifdef DEBUG_SDL
printf("SDL: Creating surface with masks: %08x %08x %08x %08x\n",
pf.rmask, pf.gmask, pf.bmask, pf.amask);
#endif
guest_screen = SDL_CreateRGBSurfaceFrom
(surface_data(surface),
surface_width(surface), surface_height(surface),
surface_bits_per_pixel(surface), surface_stride(surface),
pf.rmask, pf.gmask,
pf.bmask, pf.amask);
}
static bool sdl_check_format(DisplayChangeListener *dcl,
pixman_format_code_t format)
{
/*
* We let SDL convert for us a few more formats than,
* the native ones. Thes are the ones I have tested.
*/
return (format == PIXMAN_x8r8g8b8 ||
format == PIXMAN_b8g8r8x8 ||
format == PIXMAN_x1r5g5b5 ||
format == PIXMAN_r5g6b5);
}
/* generic keyboard conversion */
#include "sdl_keysym.h"
static kbd_layout_t *kbd_layout = NULL;
static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
{
int keysym;
/* workaround for X11+SDL bug with AltGR */
keysym = ev->keysym.sym;
if (keysym == 0 && ev->keysym.scancode == 113)
keysym = SDLK_MODE;
/* For Japanese key '\' and '|' */
if (keysym == 92 && ev->keysym.scancode == 133) {
keysym = 0xa5;
}
return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
}
/* specific keyboard conversions from scan codes */
#if defined(_WIN32)
static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
{
return ev->keysym.scancode;
}
#else
#if defined(SDL_VIDEO_DRIVER_X11)
#include <X11/XKBlib.h>
static int check_for_evdev(void)
{
SDL_SysWMinfo info;
XkbDescPtr desc = NULL;
int has_evdev = 0;
char *keycodes = NULL;
SDL_VERSION(&info.version);
if (!SDL_GetWMInfo(&info)) {
return 0;
}
desc = XkbGetKeyboard(info.info.x11.display,
XkbGBN_AllComponentsMask,
XkbUseCoreKbd);
if (desc && desc->names) {
keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
if (keycodes == NULL) {
fprintf(stderr, "could not lookup keycode name\n");
} else if (strstart(keycodes, "evdev", NULL)) {
has_evdev = 1;
} else if (!strstart(keycodes, "xfree86", NULL)) {
fprintf(stderr, "unknown keycodes `%s', please report to "
"qemu-devel@nongnu.org\n", keycodes);
}
}
if (desc) {
XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
}
if (keycodes) {
XFree(keycodes);
}
return has_evdev;
}
#else
static int check_for_evdev(void)
{
return 0;
}
#endif
static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
{
int keycode;
static int has_evdev = -1;
if (has_evdev == -1)
has_evdev = check_for_evdev();
keycode = ev->keysym.scancode;
if (keycode < 9) {
keycode = 0;
} else if (keycode < 97) {
keycode -= 8; /* just an offset */
} else if (keycode < 158) {
/* use conversion table */
if (has_evdev)
keycode = translate_evdev_keycode(keycode - 97);
else
keycode = translate_xfree86_keycode(keycode - 97);
} else if (keycode == 208) { /* Hiragana_Katakana */
keycode = 0x70;
} else if (keycode == 211) { /* backslash */
keycode = 0x73;
} else {
keycode = 0;
}
return keycode;
}
#endif
static void reset_keys(void)
{
int i;
for(i = 0; i < 256; i++) {
if (modifiers_state[i]) {
qemu_input_event_send_key_number(dcl->con, i, false);
modifiers_state[i] = 0;
}
}
}
static void sdl_process_key(SDL_KeyboardEvent *ev)
{
int keycode;
if (ev->keysym.sym == SDLK_PAUSE) {
/* specific case */
qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
ev->type == SDL_KEYDOWN);
return;
}
if (kbd_layout) {
keycode = sdl_keyevent_to_keycode_generic(ev);
} else {
keycode = sdl_keyevent_to_keycode(ev);
}
switch(keycode) {
case 0x00:
/* sent when leaving window: reset the modifiers state */
reset_keys();
return;
case 0x2a: /* Left Shift */
case 0x36: /* Right Shift */
case 0x1d: /* Left CTRL */
case 0x9d: /* Right CTRL */
case 0x38: /* Left ALT */
case 0xb8: /* Right ALT */
if (ev->type == SDL_KEYUP)
modifiers_state[keycode] = 0;
else
modifiers_state[keycode] = 1;
break;
#define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
#if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
/* SDL versions before 1.2.14 don't support key up for caps/num lock. */
case 0x45: /* num lock */
case 0x3a: /* caps lock */
/* SDL does not send the key up event, so we generate it */
qemu_input_event_send_key_number(dcl->con, keycode, true);
qemu_input_event_send_key_number(dcl->con, keycode, false);
return;
#endif
}
/* now send the key code */
qemu_input_event_send_key_number(dcl->con, keycode,
ev->type == SDL_KEYDOWN);
}
static void sdl_update_caption(void)
{
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)%s", qemu_name, 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");
}
SDL_WM_SetCaption(win_title, icon_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_ShowCursor(0);
}
}
static void sdl_show_cursor(void)
{
if (!cursor_hide)
return;
if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
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(void)
{
/*
* 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_GetAppState() & SDL_APPINPUTFOCUS)) {
return;
}
if (guest_cursor) {
SDL_SetCursor(guest_sprite);
if (!qemu_input_is_absolute() && !absolute_enabled) {
SDL_WarpMouse(guest_x, guest_y);
}
} else
sdl_hide_cursor();
SDL_WM_GrabInput(SDL_GRAB_ON);
gui_grab = 1;
sdl_update_caption();
}
static void sdl_grab_end(void)
{
SDL_WM_GrabInput(SDL_GRAB_OFF);
gui_grab = 0;
sdl_show_cursor();
sdl_update_caption();
}
static void absolute_mouse_grab(void)
{
int mouse_x, mouse_y;
SDL_GetMouseState(&mouse_x, &mouse_y);
if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
mouse_y > 0 && mouse_y < real_screen->h - 1) {
sdl_grab_start();
}
}
static void sdl_mouse_mode_change(Notifier *notify, void *data)
{
if (qemu_input_is_absolute()) {
if (!absolute_enabled) {
absolute_enabled = 1;
if (qemu_console_is_graphic(NULL)) {
absolute_mouse_grab();
}
}
} else if (absolute_enabled) {
if (!gui_fullscreen) {
sdl_grab_end();
}
absolute_enabled = 0;
}
}
static void sdl_send_mouse_event(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),
[INPUT_BUTTON_WHEELUP] = SDL_BUTTON(SDL_BUTTON_WHEELUP),
[INPUT_BUTTON_WHEELDOWN] = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
};
static uint32_t prev_state;
if (prev_state != state) {
qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
prev_state = state;
}
if (qemu_input_is_absolute()) {
qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
real_screen->w);
qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
real_screen->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(dcl->con, INPUT_AXIS_X, dx);
qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
}
qemu_input_event_sync();
}
static void sdl_scale(int width, int height)
{
int bpp = real_screen->format->BitsPerPixel;
#ifdef DEBUG_SDL
printf("SDL: Scaling to %dx%d bpp %d\n", width, height, bpp);
#endif
if (bpp != 16 && bpp != 32) {
bpp = 32;
}
do_sdl_resize(width, height, bpp);
scaling_active = 1;
}
static void toggle_full_screen(void)
{
int width = surface_width(surface);
int height = surface_height(surface);
int bpp = surface_bits_per_pixel(surface);
gui_fullscreen = !gui_fullscreen;
if (gui_fullscreen) {
gui_saved_width = real_screen->w;
gui_saved_height = real_screen->h;
gui_saved_scaling = scaling_active;
do_sdl_resize(width, height, bpp);
scaling_active = 0;
gui_saved_grab = gui_grab;
sdl_grab_start();
} else {
if (gui_saved_scaling) {
sdl_scale(gui_saved_width, gui_saved_height);
} else {
do_sdl_resize(width, height, 0);
}
if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
sdl_grab_end();
}
}
graphic_hw_invalidate(NULL);
graphic_hw_update(NULL);
}
static void handle_keydown(SDL_Event *ev)
{
int mod_state;
int keycode;
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) {
keycode = sdl_keyevent_to_keycode(&ev->key);
switch (keycode) {
case 0x21: /* 'f' key on US keyboard */
toggle_full_screen();
gui_keysym = 1;
break;
case 0x16: /* 'u' key on US keyboard */
if (scaling_active) {
scaling_active = 0;
sdl_switch(dcl, NULL);
graphic_hw_invalidate(NULL);
graphic_hw_update(NULL);
}
gui_keysym = 1;
break;
case 0x02 ... 0x0a: /* '1' to '9' keys */
/* Reset the modifiers sent to the current console */
reset_keys();
console_select(keycode - 0x02);
gui_keysym = 1;
if (gui_fullscreen) {
break;
}
if (!qemu_console_is_graphic(NULL)) {
/* release grab if going to a text console */
if (gui_grab) {
sdl_grab_end();
} else if (absolute_enabled) {
sdl_show_cursor();
}
} else if (absolute_enabled) {
sdl_hide_cursor();
absolute_mouse_grab();
}
break;
case 0x1b: /* '+' */
case 0x35: /* '-' */
if (!gui_fullscreen) {
int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
160);
int height = (surface_height(surface) * width) /
surface_width(surface);
sdl_scale(width, height);
graphic_hw_invalidate(NULL);
graphic_hw_update(NULL);
gui_keysym = 1;
}
default:
break;
}
} else if (!qemu_console_is_graphic(NULL)) {
int keysym = 0;
if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
switch (ev->key.keysym.sym) {
case SDLK_UP:
keysym = QEMU_KEY_CTRL_UP;
break;
case SDLK_DOWN:
keysym = QEMU_KEY_CTRL_DOWN;
break;
case SDLK_LEFT:
keysym = QEMU_KEY_CTRL_LEFT;
break;
case SDLK_RIGHT:
keysym = QEMU_KEY_CTRL_RIGHT;
break;
case SDLK_HOME:
keysym = QEMU_KEY_CTRL_HOME;
break;
case SDLK_END:
keysym = QEMU_KEY_CTRL_END;
break;
case SDLK_PAGEUP:
keysym = QEMU_KEY_CTRL_PAGEUP;
break;
case SDLK_PAGEDOWN:
keysym = QEMU_KEY_CTRL_PAGEDOWN;
break;
default:
break;
}
} else {
switch (ev->key.keysym.sym) {
case SDLK_UP:
keysym = QEMU_KEY_UP;
break;
case SDLK_DOWN:
keysym = QEMU_KEY_DOWN;
break;
case SDLK_LEFT:
keysym = QEMU_KEY_LEFT;
break;
case SDLK_RIGHT:
keysym = QEMU_KEY_RIGHT;
break;
case SDLK_HOME:
keysym = QEMU_KEY_HOME;
break;
case SDLK_END:
keysym = QEMU_KEY_END;
break;
case SDLK_PAGEUP:
keysym = QEMU_KEY_PAGEUP;
break;
case SDLK_PAGEDOWN:
keysym = QEMU_KEY_PAGEDOWN;
break;
case SDLK_BACKSPACE:
keysym = QEMU_KEY_BACKSPACE;
break;
case SDLK_DELETE:
keysym = QEMU_KEY_DELETE;
break;
default:
break;
}
}
if (keysym) {
kbd_put_keysym(keysym);
} else if (ev->key.keysym.unicode != 0) {
kbd_put_keysym(ev->key.keysym.unicode);
}
}
if (qemu_console_is_graphic(NULL) && !gui_keysym) {
sdl_process_key(&ev->key);
}
}
static void handle_keyup(SDL_Event *ev)
{
int mod_state;
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) {
if (qemu_console_is_graphic(NULL)) {
sdl_grab_start();
}
} else if (!gui_fullscreen) {
sdl_grab_end();
}
/* SDL does not send back all the modifiers key, so we must
* correct it. */
reset_keys();
return;
}
gui_keysym = 0;
}
if (qemu_console_is_graphic(NULL) && !gui_keysym) {
sdl_process_key(&ev->key);
}
}
static void handle_mousemotion(SDL_Event *ev)
{
int max_x, max_y;
if (qemu_console_is_graphic(NULL) &&
(qemu_input_is_absolute() || absolute_enabled)) {
max_x = real_screen->w - 1;
max_y = real_screen->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();
}
if (!gui_grab &&
(ev->motion.x > 0 && ev->motion.x < max_x &&
ev->motion.y > 0 && ev->motion.y < max_y)) {
sdl_grab_start();
}
}
if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
sdl_send_mouse_event(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;
if (!qemu_console_is_graphic(NULL)) {
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();
}
} else {
if (ev->type == SDL_MOUSEBUTTONDOWN) {
buttonstate |= SDL_BUTTON(bev->button);
} else {
buttonstate &= ~SDL_BUTTON(bev->button);
}
sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
}
}
static void handle_activation(SDL_Event *ev)
{
#ifdef _WIN32
/* Disable grab if the window no longer has the focus
* (Windows-only workaround) */
if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
!ev->active.gain && !gui_fullscreen) {
sdl_grab_end();
}
#endif
if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
(qemu_input_is_absolute() || absolute_enabled)) {
absolute_mouse_grab();
}
if (ev->active.state & SDL_APPACTIVE) {
if (ev->active.gain) {
/* Back to default interval */
update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
} else {
/* Sleeping interval. Not using the long default here as
* sdl_refresh does not only update the guest screen, but
* also checks for gui events. */
update_displaychangelistener(dcl, 500);
}
}
}
static void sdl_refresh(DisplayChangeListener *dcl)
{
SDL_Event ev1, *ev = &ev1;
if (last_vm_running != runstate_is_running()) {
last_vm_running = runstate_is_running();
sdl_update_caption();
}
graphic_hw_update(NULL);
SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
while (SDL_PollEvent(ev)) {
switch (ev->type) {
case SDL_VIDEOEXPOSE:
sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
break;
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_ACTIVEEVENT:
handle_activation(ev);
break;
case SDL_VIDEORESIZE:
sdl_scale(ev->resize.w, ev->resize.h);
graphic_hw_invalidate(NULL);
graphic_hw_update(NULL);
break;
default:
break;
}
}
}
static void sdl_mouse_warp(DisplayChangeListener *dcl,
int x, int y, int on)
{
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_WarpMouse(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)
{
uint8_t *image, *mask;
int bpl;
if (guest_sprite)
SDL_FreeCursor(guest_sprite);
bpl = cursor_get_mono_bpl(c);
image = g_malloc0(bpl * c->height);
mask = g_malloc0(bpl * c->height);
cursor_get_mono_image(c, 0x000000, image);
cursor_get_mono_mask(c, 0, mask);
guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
c->hot_x, c->hot_y);
g_free(image);
g_free(mask);
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_gfx_check_format = sdl_check_format,
.dpy_refresh = sdl_refresh,
.dpy_mouse_set = sdl_mouse_warp,
.dpy_cursor_define = sdl_mouse_define,
};
void sdl_display_early_init(int opengl)
{
if (opengl == 1 /* on */) {
fprintf(stderr,
"SDL1 display code has no opengl support.\n"
"Please recompile qemu with SDL2, using\n"
"./configure --enable-sdl --with-sdlabi=2.0\n");
}
}
void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
{
int flags;
uint8_t data = 0;
const SDL_VideoInfo *vi;
char *filename;
#if defined(__APPLE__)
/* always use generic keymaps */
if (!keyboard_layout)
keyboard_layout = "en-us";
#endif
if(keyboard_layout) {
kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
if (!kbd_layout)
exit(1);
}
if (no_frame)
gui_noframe = 1;
if (!full_screen) {
setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
}
#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
/* Enable normal up/down events for Caps-Lock and Num-Lock keys.
* This requires SDL >= 1.2.14. */
setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
if (SDL_Init (flags)) {
fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
SDL_GetError());
exit(1);
}
vi = SDL_GetVideoInfo();
host_format = *(vi->vfmt);
/* 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_SRCCOLORKEY, colorkey);
SDL_WM_SetIcon(image, NULL);
}
g_free(filename);
}
if (full_screen) {
gui_fullscreen = 1;
sdl_grab_start();
}
dcl = g_new0(DisplayChangeListener, 1);
dcl->ops = &dcl_ops;
register_displaychangelistener(dcl);
mouse_mode_notifier.notify = sdl_mouse_mode_change;
qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
sdl_update_caption();
SDL_EnableKeyRepeat(250, 50);
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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