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-rw-r--r--sdl.c569
1 files changed, 569 insertions, 0 deletions
diff --git a/sdl.c b/sdl.c
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index 0000000..38d7553
--- /dev/null
+++ b/sdl.c
@@ -0,0 +1,569 @@
+/*
+ * 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.
+ */
+#include "vl.h"
+
+#include <SDL.h>
+
+#ifndef _WIN32
+#include <signal.h>
+#endif
+
+static SDL_Surface *screen;
+static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
+static int last_vm_running;
+static int gui_saved_grab;
+static int gui_fullscreen;
+static int gui_key_modifier_pressed;
+static int gui_keysym;
+static int gui_fullscreen_initial_grab;
+static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
+static uint8_t modifiers_state[256];
+static int width, height;
+static SDL_Cursor *sdl_cursor_normal;
+static SDL_Cursor *sdl_cursor_hidden;
+static int absolute_enabled = 0;
+
+static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
+{
+ // printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
+ SDL_UpdateRect(screen, x, y, w, h);
+}
+
+static void sdl_resize(DisplayState *ds, int w, int h)
+{
+ int flags;
+
+ // printf("resizing to %d %d\n", w, h);
+
+ flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
+ if (gui_fullscreen)
+ flags |= SDL_FULLSCREEN;
+
+ width = w;
+ height = h;
+
+ again:
+ screen = SDL_SetVideoMode(w, h, 0, flags);
+ if (!screen) {
+ fprintf(stderr, "Could not open SDL display\n");
+ exit(1);
+ }
+ if (!screen->pixels && (flags & SDL_HWSURFACE) && (flags & SDL_FULLSCREEN)) {
+ flags &= ~SDL_HWSURFACE;
+ goto again;
+ }
+
+ if (!screen->pixels) {
+ fprintf(stderr, "Could not open SDL display\n");
+ exit(1);
+ }
+ ds->data = screen->pixels;
+ ds->linesize = screen->pitch;
+ ds->depth = screen->format->BitsPerPixel;
+ if (ds->depth == 32 && screen->format->Rshift == 0) {
+ ds->bgr = 1;
+ } else {
+ ds->bgr = 0;
+ }
+ ds->width = w;
+ ds->height = h;
+}
+
+/* generic keyboard conversion */
+
+#include "sdl_keysym.h"
+#include "keymaps.c"
+
+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;
+ return keysym2scancode(kbd_layout, keysym);
+}
+
+/* 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
+
+static const uint8_t x_keycode_to_pc_keycode[61] = {
+ 0xc7, /* 97 Home */
+ 0xc8, /* 98 Up */
+ 0xc9, /* 99 PgUp */
+ 0xcb, /* 100 Left */
+ 0x4c, /* 101 KP-5 */
+ 0xcd, /* 102 Right */
+ 0xcf, /* 103 End */
+ 0xd0, /* 104 Down */
+ 0xd1, /* 105 PgDn */
+ 0xd2, /* 106 Ins */
+ 0xd3, /* 107 Del */
+ 0x9c, /* 108 Enter */
+ 0x9d, /* 109 Ctrl-R */
+ 0x0, /* 110 Pause */
+ 0xb7, /* 111 Print */
+ 0xb5, /* 112 Divide */
+ 0xb8, /* 113 Alt-R */
+ 0xc6, /* 114 Break */
+ 0x0, /* 115 */
+ 0x0, /* 116 */
+ 0x0, /* 117 */
+ 0x0, /* 118 */
+ 0x0, /* 119 */
+ 0x70, /* 120 Hiragana_Katakana */
+ 0x0, /* 121 */
+ 0x0, /* 122 */
+ 0x73, /* 123 backslash */
+ 0x0, /* 124 */
+ 0x0, /* 125 */
+ 0x0, /* 126 */
+ 0x0, /* 127 */
+ 0x0, /* 128 */
+ 0x79, /* 129 Henkan */
+ 0x0, /* 130 */
+ 0x7b, /* 131 Muhenkan */
+ 0x0, /* 132 */
+ 0x7d, /* 133 Yen */
+ 0x0, /* 134 */
+ 0x0, /* 135 */
+ 0x47, /* 136 KP_7 */
+ 0x48, /* 137 KP_8 */
+ 0x49, /* 138 KP_9 */
+ 0x4b, /* 139 KP_4 */
+ 0x4c, /* 140 KP_5 */
+ 0x4d, /* 141 KP_6 */
+ 0x4f, /* 142 KP_1 */
+ 0x50, /* 143 KP_2 */
+ 0x51, /* 144 KP_3 */
+ 0x52, /* 145 KP_0 */
+ 0x53, /* 146 KP_. */
+ 0x47, /* 147 KP_HOME */
+ 0x48, /* 148 KP_UP */
+ 0x49, /* 149 KP_PgUp */
+ 0x4b, /* 150 KP_Left */
+ 0x4c, /* 151 KP_ */
+ 0x4d, /* 152 KP_Right */
+ 0x4f, /* 153 KP_End */
+ 0x50, /* 154 KP_Down */
+ 0x51, /* 155 KP_PgDn */
+ 0x52, /* 156 KP_Ins */
+ 0x53, /* 157 KP_Del */
+};
+
+static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
+{
+ int keycode;
+
+ 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 */
+ keycode = x_keycode_to_pc_keycode[keycode - 97];
+ } else {
+ keycode = 0;
+ }
+ return keycode;
+}
+
+#endif
+
+static void reset_keys(void)
+{
+ int i;
+ for(i = 0; i < 256; i++) {
+ if (modifiers_state[i]) {
+ if (i & 0x80)
+ kbd_put_keycode(0xe0);
+ kbd_put_keycode(i | 0x80);
+ modifiers_state[i] = 0;
+ }
+ }
+}
+
+static void sdl_process_key(SDL_KeyboardEvent *ev)
+{
+ int keycode, v;
+
+ if (ev->keysym.sym == SDLK_PAUSE) {
+ /* specific case */
+ v = 0;
+ if (ev->type == SDL_KEYUP)
+ v |= 0x80;
+ kbd_put_keycode(0xe1);
+ kbd_put_keycode(0x1d | v);
+ kbd_put_keycode(0x45 | v);
+ 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;
+ case 0x45: /* num lock */
+ case 0x3a: /* caps lock */
+ /* SDL does not send the key up event, so we generate it */
+ kbd_put_keycode(keycode);
+ kbd_put_keycode(keycode | 0x80);
+ return;
+ }
+
+ /* now send the key code */
+ if (keycode & 0x80)
+ kbd_put_keycode(0xe0);
+ if (ev->type == SDL_KEYUP)
+ kbd_put_keycode(keycode | 0x80);
+ else
+ kbd_put_keycode(keycode & 0x7f);
+}
+
+static void sdl_update_caption(void)
+{
+ char buf[1024];
+ strcpy(buf, "QEMU");
+ if (!vm_running) {
+ strcat(buf, " [Stopped]");
+ }
+ if (gui_grab) {
+ strcat(buf, " - Press Ctrl-Alt to exit grab");
+ }
+ SDL_WM_SetCaption(buf, "QEMU");
+}
+
+static void sdl_hide_cursor(void)
+{
+ if (kbd_mouse_is_absolute()) {
+ SDL_ShowCursor(1);
+ SDL_SetCursor(sdl_cursor_hidden);
+ } else {
+ SDL_ShowCursor(0);
+ }
+}
+
+static void sdl_show_cursor(void)
+{
+ if (!kbd_mouse_is_absolute()) {
+ SDL_ShowCursor(1);
+ }
+}
+
+static void sdl_grab_start(void)
+{
+ sdl_hide_cursor();
+ SDL_WM_GrabInput(SDL_GRAB_ON);
+ /* dummy read to avoid moving the mouse */
+ SDL_GetRelativeMouseState(NULL, NULL);
+ gui_grab = 1;
+ sdl_update_caption();
+}
+
+static void sdl_grab_end(void)
+{
+ SDL_WM_GrabInput(SDL_GRAB_OFF);
+ sdl_show_cursor();
+ gui_grab = 0;
+ sdl_update_caption();
+}
+
+static void sdl_send_mouse_event(int dz)
+{
+ int dx, dy, state, buttons;
+ state = SDL_GetRelativeMouseState(&dx, &dy);
+ buttons = 0;
+ if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
+ buttons |= MOUSE_EVENT_LBUTTON;
+ if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
+ buttons |= MOUSE_EVENT_RBUTTON;
+ if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
+ buttons |= MOUSE_EVENT_MBUTTON;
+
+ if (kbd_mouse_is_absolute()) {
+ if (!absolute_enabled) {
+ sdl_hide_cursor();
+ if (gui_grab) {
+ sdl_grab_end();
+ }
+ absolute_enabled = 1;
+ }
+
+ SDL_GetMouseState(&dx, &dy);
+ dx = dx * 0x7FFF / width;
+ dy = dy * 0x7FFF / height;
+ }
+
+ kbd_mouse_event(dx, dy, dz, buttons);
+}
+
+static void toggle_full_screen(DisplayState *ds)
+{
+ gui_fullscreen = !gui_fullscreen;
+ sdl_resize(ds, screen->w, screen->h);
+ if (gui_fullscreen) {
+ gui_saved_grab = gui_grab;
+ sdl_grab_start();
+ } else {
+ if (!gui_saved_grab)
+ sdl_grab_end();
+ }
+ vga_hw_invalidate();
+ vga_hw_update();
+}
+
+static void sdl_refresh(DisplayState *ds)
+{
+ SDL_Event ev1, *ev = &ev1;
+ int mod_state;
+
+ if (last_vm_running != vm_running) {
+ last_vm_running = vm_running;
+ sdl_update_caption();
+ }
+
+ vga_hw_update();
+
+ while (SDL_PollEvent(ev)) {
+ switch (ev->type) {
+ case SDL_VIDEOEXPOSE:
+ sdl_update(ds, 0, 0, screen->w, screen->h);
+ break;
+ case SDL_KEYDOWN:
+ case SDL_KEYUP:
+ if (ev->type == SDL_KEYDOWN) {
+ mod_state = (SDL_GetModState() & gui_grab_code) ==
+ gui_grab_code;
+ gui_key_modifier_pressed = mod_state;
+ if (gui_key_modifier_pressed) {
+ int keycode;
+ keycode = sdl_keyevent_to_keycode(&ev->key);
+ switch(keycode) {
+ case 0x21: /* 'f' key on US keyboard */
+ toggle_full_screen(ds);
+ gui_keysym = 1;
+ break;
+ case 0x02 ... 0x0a: /* '1' to '9' keys */
+ console_select(keycode - 0x02);
+ if (!is_graphic_console()) {
+ /* display grab if going to a text console */
+ if (gui_grab)
+ sdl_grab_end();
+ }
+ gui_keysym = 1;
+ break;
+ default:
+ break;
+ }
+ } else if (!is_graphic_console()) {
+ int keysym;
+ 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);
+ }
+ }
+ } else if (ev->type == SDL_KEYUP) {
+ mod_state = (ev->key.keysym.mod & gui_grab_code);
+ if (!mod_state) {
+ if (gui_key_modifier_pressed) {
+ gui_key_modifier_pressed = 0;
+ if (gui_keysym == 0) {
+ /* exit/enter grab if pressing Ctrl-Alt */
+ if (!gui_grab) {
+ /* if the application is not active,
+ do not try to enter grab state. It
+ prevents
+ 'SDL_WM_GrabInput(SDL_GRAB_ON)'
+ from blocking all the application
+ (SDL bug). */
+ if (SDL_GetAppState() & SDL_APPACTIVE)
+ sdl_grab_start();
+ } else {
+ sdl_grab_end();
+ }
+ /* SDL does not send back all the
+ modifiers key, so we must correct it */
+ reset_keys();
+ break;
+ }
+ gui_keysym = 0;
+ }
+ }
+ }
+ if (is_graphic_console())
+ sdl_process_key(&ev->key);
+ break;
+ case SDL_QUIT:
+ qemu_system_shutdown_request();
+ break;
+ case SDL_MOUSEMOTION:
+ if (gui_grab || kbd_mouse_is_absolute()) {
+ sdl_send_mouse_event(0);
+ }
+ break;
+ case SDL_MOUSEBUTTONDOWN:
+ case SDL_MOUSEBUTTONUP:
+ {
+ SDL_MouseButtonEvent *bev = &ev->button;
+ if (!gui_grab && !kbd_mouse_is_absolute()) {
+ if (ev->type == SDL_MOUSEBUTTONDOWN &&
+ (bev->state & SDL_BUTTON_LMASK)) {
+ /* start grabbing all events */
+ sdl_grab_start();
+ }
+ } else {
+ int dz;
+ dz = 0;
+#ifdef SDL_BUTTON_WHEELUP
+ if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
+ dz = -1;
+ } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
+ dz = 1;
+ }
+#endif
+ sdl_send_mouse_event(dz);
+ }
+ }
+ break;
+ case SDL_ACTIVEEVENT:
+ if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
+ !ev->active.gain && !gui_fullscreen_initial_grab) {
+ sdl_grab_end();
+ }
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static void sdl_cleanup(void)
+{
+ SDL_Quit();
+}
+
+void sdl_display_init(DisplayState *ds, int full_screen)
+{
+ int flags;
+ uint8_t data = 0;
+
+#if defined(__APPLE__)
+ /* always use generic keymaps */
+ if (!keyboard_layout)
+ keyboard_layout = "en-us";
+#endif
+ if(keyboard_layout) {
+ kbd_layout = init_keyboard_layout(keyboard_layout);
+ if (!kbd_layout)
+ exit(1);
+ }
+
+ flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
+ if (SDL_Init (flags)) {
+ fprintf(stderr, "Could not initialize SDL - exiting\n");
+ exit(1);
+ }
+#ifndef _WIN32
+ /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
+ signal(SIGINT, SIG_DFL);
+ signal(SIGQUIT, SIG_DFL);
+#endif
+
+ ds->dpy_update = sdl_update;
+ ds->dpy_resize = sdl_resize;
+ ds->dpy_refresh = sdl_refresh;
+
+ sdl_resize(ds, 640, 400);
+ sdl_update_caption();
+ SDL_EnableKeyRepeat(250, 50);
+ SDL_EnableUNICODE(1);
+ gui_grab = 0;
+
+ sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
+ sdl_cursor_normal = SDL_GetCursor();
+
+ atexit(sdl_cleanup);
+ if (full_screen) {
+ gui_fullscreen = 1;
+ gui_fullscreen_initial_grab = 1;
+ sdl_grab_start();
+ }
+}
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