*initHEADmaster

1 files changed, 543 insertions, 0 deletions

diff --git a/source/3rd-party/SDL2/src/video/x11/SDL_x11keyboard.c b/source/3rd-party/SDL2/src/video/x11/SDL_x11keyboard.c
new file mode 100644
index 0000000..a57adf9
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/x11/SDL_x11keyboard.c
@@ -0,0 +1,543 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_X11
+
+#include "SDL_x11video.h"
+
+#include "../../events/SDL_keyboard_c.h"
+#include "../../events/scancodes_darwin.h"
+#include "../../events/scancodes_xfree86.h"
+
+#include <X11/keysym.h>
+#include <X11/XKBlib.h>
+
+#include "imKStoUCS.h"
+
+#ifdef X_HAVE_UTF8_STRING
+#include <locale.h>
+#endif
+
+/* *INDENT-OFF* */
+static const struct {
+    KeySym keysym;
+    SDL_Scancode scancode;
+} KeySymToSDLScancode[] = {
+    { XK_Return, SDL_SCANCODE_RETURN },
+    { XK_Escape, SDL_SCANCODE_ESCAPE },
+    { XK_BackSpace, SDL_SCANCODE_BACKSPACE },
+    { XK_Tab, SDL_SCANCODE_TAB },
+    { XK_Caps_Lock, SDL_SCANCODE_CAPSLOCK },
+    { XK_F1, SDL_SCANCODE_F1 },
+    { XK_F2, SDL_SCANCODE_F2 },
+    { XK_F3, SDL_SCANCODE_F3 },
+    { XK_F4, SDL_SCANCODE_F4 },
+    { XK_F5, SDL_SCANCODE_F5 },
+    { XK_F6, SDL_SCANCODE_F6 },
+    { XK_F7, SDL_SCANCODE_F7 },
+    { XK_F8, SDL_SCANCODE_F8 },
+    { XK_F9, SDL_SCANCODE_F9 },
+    { XK_F10, SDL_SCANCODE_F10 },
+    { XK_F11, SDL_SCANCODE_F11 },
+    { XK_F12, SDL_SCANCODE_F12 },
+    { XK_Print, SDL_SCANCODE_PRINTSCREEN },
+    { XK_Scroll_Lock, SDL_SCANCODE_SCROLLLOCK },
+    { XK_Pause, SDL_SCANCODE_PAUSE },
+    { XK_Insert, SDL_SCANCODE_INSERT },
+    { XK_Home, SDL_SCANCODE_HOME },
+    { XK_Prior, SDL_SCANCODE_PAGEUP },
+    { XK_Delete, SDL_SCANCODE_DELETE },
+    { XK_End, SDL_SCANCODE_END },
+    { XK_Next, SDL_SCANCODE_PAGEDOWN },
+    { XK_Right, SDL_SCANCODE_RIGHT },
+    { XK_Left, SDL_SCANCODE_LEFT },
+    { XK_Down, SDL_SCANCODE_DOWN },
+    { XK_Up, SDL_SCANCODE_UP },
+    { XK_Num_Lock, SDL_SCANCODE_NUMLOCKCLEAR },
+    { XK_KP_Divide, SDL_SCANCODE_KP_DIVIDE },
+    { XK_KP_Multiply, SDL_SCANCODE_KP_MULTIPLY },
+    { XK_KP_Subtract, SDL_SCANCODE_KP_MINUS },
+    { XK_KP_Add, SDL_SCANCODE_KP_PLUS },
+    { XK_KP_Enter, SDL_SCANCODE_KP_ENTER },
+    { XK_KP_Delete, SDL_SCANCODE_KP_PERIOD },
+    { XK_KP_End, SDL_SCANCODE_KP_1 },
+    { XK_KP_Down, SDL_SCANCODE_KP_2 },
+    { XK_KP_Next, SDL_SCANCODE_KP_3 },
+    { XK_KP_Left, SDL_SCANCODE_KP_4 },
+    { XK_KP_Begin, SDL_SCANCODE_KP_5 },
+    { XK_KP_Right, SDL_SCANCODE_KP_6 },
+    { XK_KP_Home, SDL_SCANCODE_KP_7 },
+    { XK_KP_Up, SDL_SCANCODE_KP_8 },
+    { XK_KP_Prior, SDL_SCANCODE_KP_9 },
+    { XK_KP_Insert, SDL_SCANCODE_KP_0 },
+    { XK_KP_Decimal, SDL_SCANCODE_KP_PERIOD },
+    { XK_KP_1, SDL_SCANCODE_KP_1 },
+    { XK_KP_2, SDL_SCANCODE_KP_2 },
+    { XK_KP_3, SDL_SCANCODE_KP_3 },
+    { XK_KP_4, SDL_SCANCODE_KP_4 },
+    { XK_KP_5, SDL_SCANCODE_KP_5 },
+    { XK_KP_6, SDL_SCANCODE_KP_6 },
+    { XK_KP_7, SDL_SCANCODE_KP_7 },
+    { XK_KP_8, SDL_SCANCODE_KP_8 },
+    { XK_KP_9, SDL_SCANCODE_KP_9 },
+    { XK_KP_0, SDL_SCANCODE_KP_0 },
+    { XK_KP_Decimal, SDL_SCANCODE_KP_PERIOD },
+    { XK_Hyper_R, SDL_SCANCODE_APPLICATION },
+    { XK_KP_Equal, SDL_SCANCODE_KP_EQUALS },
+    { XK_F13, SDL_SCANCODE_F13 },
+    { XK_F14, SDL_SCANCODE_F14 },
+    { XK_F15, SDL_SCANCODE_F15 },
+    { XK_F16, SDL_SCANCODE_F16 },
+    { XK_F17, SDL_SCANCODE_F17 },
+    { XK_F18, SDL_SCANCODE_F18 },
+    { XK_F19, SDL_SCANCODE_F19 },
+    { XK_F20, SDL_SCANCODE_F20 },
+    { XK_F21, SDL_SCANCODE_F21 },
+    { XK_F22, SDL_SCANCODE_F22 },
+    { XK_F23, SDL_SCANCODE_F23 },
+    { XK_F24, SDL_SCANCODE_F24 },
+    { XK_Execute, SDL_SCANCODE_EXECUTE },
+    { XK_Help, SDL_SCANCODE_HELP },
+    { XK_Menu, SDL_SCANCODE_MENU },
+    { XK_Select, SDL_SCANCODE_SELECT },
+    { XK_Cancel, SDL_SCANCODE_STOP },
+    { XK_Redo, SDL_SCANCODE_AGAIN },
+    { XK_Undo, SDL_SCANCODE_UNDO },
+    { XK_Find, SDL_SCANCODE_FIND },
+    { XK_KP_Separator, SDL_SCANCODE_KP_COMMA },
+    { XK_Sys_Req, SDL_SCANCODE_SYSREQ },
+    { XK_Control_L, SDL_SCANCODE_LCTRL },
+    { XK_Shift_L, SDL_SCANCODE_LSHIFT },
+    { XK_Alt_L, SDL_SCANCODE_LALT },
+    { XK_Meta_L, SDL_SCANCODE_LGUI },
+    { XK_Super_L, SDL_SCANCODE_LGUI },
+    { XK_Control_R, SDL_SCANCODE_RCTRL },
+    { XK_Shift_R, SDL_SCANCODE_RSHIFT },
+    { XK_Alt_R, SDL_SCANCODE_RALT },
+    { XK_ISO_Level3_Shift, SDL_SCANCODE_RALT },
+    { XK_Meta_R, SDL_SCANCODE_RGUI },
+    { XK_Super_R, SDL_SCANCODE_RGUI },
+    { XK_Mode_switch, SDL_SCANCODE_MODE },
+    { XK_period, SDL_SCANCODE_PERIOD },
+    { XK_comma, SDL_SCANCODE_COMMA },
+    { XK_slash, SDL_SCANCODE_SLASH },
+    { XK_backslash, SDL_SCANCODE_BACKSLASH },
+    { XK_minus, SDL_SCANCODE_MINUS },
+    { XK_equal, SDL_SCANCODE_EQUALS },
+    { XK_space, SDL_SCANCODE_SPACE },
+    { XK_grave, SDL_SCANCODE_GRAVE },
+    { XK_apostrophe, SDL_SCANCODE_APOSTROPHE },
+    { XK_bracketleft, SDL_SCANCODE_LEFTBRACKET },
+    { XK_bracketright, SDL_SCANCODE_RIGHTBRACKET },
+};
+
+static const struct
+{
+    SDL_Scancode const *table;
+    int table_size;
+} scancode_set[] = {
+    { darwin_scancode_table, SDL_arraysize(darwin_scancode_table) },
+    { xfree86_scancode_table, SDL_arraysize(xfree86_scancode_table) },
+    { xfree86_scancode_table2, SDL_arraysize(xfree86_scancode_table2) },
+    { xvnc_scancode_table, SDL_arraysize(xvnc_scancode_table) },
+};
+/* *INDENT-OFF* */
+
+/* This function only works for keyboards in US QWERTY layout */
+static SDL_Scancode
+X11_KeyCodeToSDLScancode(_THIS, KeyCode keycode)
+{
+    KeySym keysym;
+    int i;
+
+    keysym = X11_KeyCodeToSym(_this, keycode, 0);
+    if (keysym == NoSymbol) {
+        return SDL_SCANCODE_UNKNOWN;
+    }
+
+    if (keysym >= XK_a && keysym <= XK_z) {
+        return SDL_SCANCODE_A + (keysym - XK_a);
+    }
+    if (keysym >= XK_A && keysym <= XK_Z) {
+        return SDL_SCANCODE_A + (keysym - XK_A);
+    }
+
+    if (keysym == XK_0) {
+        return SDL_SCANCODE_0;
+    }
+    if (keysym >= XK_1 && keysym <= XK_9) {
+        return SDL_SCANCODE_1 + (keysym - XK_1);
+    }
+
+    for (i = 0; i < SDL_arraysize(KeySymToSDLScancode); ++i) {
+        if (keysym == KeySymToSDLScancode[i].keysym) {
+            return KeySymToSDLScancode[i].scancode;
+        }
+    }
+    return SDL_SCANCODE_UNKNOWN;
+}
+
+static Uint32
+X11_KeyCodeToUcs4(_THIS, KeyCode keycode, unsigned char group)
+{
+    KeySym keysym = X11_KeyCodeToSym(_this, keycode, group);
+
+    if (keysym == NoSymbol) {
+        return 0;
+    }
+
+    return X11_KeySymToUcs4(keysym);
+}
+
+KeySym
+X11_KeyCodeToSym(_THIS, KeyCode keycode, unsigned char group)
+{
+    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
+    KeySym keysym;
+
+#if SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM
+    if (data->xkb) {
+        int num_groups     = XkbKeyNumGroups(data->xkb, keycode);
+        unsigned char info = XkbKeyGroupInfo(data->xkb, keycode);
+        
+        if (num_groups && group >= num_groups) {
+        
+            int action = XkbOutOfRangeGroupAction(info);
+            
+            if (action == XkbRedirectIntoRange) {
+                if ((group = XkbOutOfRangeGroupNumber(info)) >= num_groups) {
+                    group = 0;
+                }
+            } else if (action == XkbClampIntoRange) {
+                group = num_groups - 1;
+            } else {
+                group %= num_groups;
+            }
+        }
+        keysym = X11_XkbKeycodeToKeysym(data->display, keycode, group, 0);
+    } else {
+        keysym = X11_XKeycodeToKeysym(data->display, keycode, 0);
+    }
+#else
+    keysym = X11_XKeycodeToKeysym(data->display, keycode, 0);
+#endif
+
+    return keysym;
+}
+
+int
+X11_InitKeyboard(_THIS)
+{
+    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
+    int i = 0;
+    int j = 0;
+    int min_keycode, max_keycode;
+    struct {
+        SDL_Scancode scancode;
+        KeySym keysym;
+        int value;
+    } fingerprint[] = {
+        { SDL_SCANCODE_HOME, XK_Home, 0 },
+        { SDL_SCANCODE_PAGEUP, XK_Prior, 0 },
+        { SDL_SCANCODE_UP, XK_Up, 0 },
+        { SDL_SCANCODE_LEFT, XK_Left, 0 },
+        { SDL_SCANCODE_DELETE, XK_Delete, 0 },
+        { SDL_SCANCODE_KP_ENTER, XK_KP_Enter, 0 },
+    };
+    int best_distance;
+    int best_index;
+    int distance;
+    Bool xkb_repeat = 0;
+    
+    X11_XAutoRepeatOn(data->display);
+
+#if SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM
+    {
+        int xkb_major = XkbMajorVersion;
+        int xkb_minor = XkbMinorVersion;
+
+        if (X11_XkbQueryExtension(data->display, NULL, NULL, NULL, &xkb_major, &xkb_minor)) {
+            data->xkb = X11_XkbGetMap(data->display, XkbAllClientInfoMask, XkbUseCoreKbd);
+        }
+
+        /* This will remove KeyRelease events for held keys */
+        X11_XkbSetDetectableAutoRepeat(data->display, True, &xkb_repeat);
+    }
+#endif
+    
+    /* Open a connection to the X input manager */
+#ifdef X_HAVE_UTF8_STRING
+    if (SDL_X11_HAVE_UTF8) {
+        /* Set the locale, and call XSetLocaleModifiers before XOpenIM so that 
+           Compose keys will work correctly. */
+        char *prev_locale = setlocale(LC_ALL, NULL);
+        char *prev_xmods  = X11_XSetLocaleModifiers(NULL);
+        const char *new_xmods = "";
+        const char *env_xmods = SDL_getenv("XMODIFIERS");
+        SDL_bool has_dbus_ime_support = SDL_FALSE;
+
+        if (prev_locale) {
+            prev_locale = SDL_strdup(prev_locale);
+        }
+
+        if (prev_xmods) {
+            prev_xmods = SDL_strdup(prev_xmods);
+        }
+
+        /* IBus resends some key events that were filtered by XFilterEvents
+           when it is used via XIM which causes issues. Prevent this by forcing
+           @im=none if XMODIFIERS contains @im=ibus. IBus can still be used via 
+           the DBus implementation, which also has support for pre-editing. */
+        if (env_xmods && SDL_strstr(env_xmods, "@im=ibus") != NULL) {
+            has_dbus_ime_support = SDL_TRUE;
+        }
+        if (env_xmods && SDL_strstr(env_xmods, "@im=fcitx") != NULL) {
+            has_dbus_ime_support = SDL_TRUE;
+        }
+        if (has_dbus_ime_support || !xkb_repeat) {
+            new_xmods = "@im=none";
+        }
+
+        setlocale(LC_ALL, "");
+        X11_XSetLocaleModifiers(new_xmods);
+
+        data->im = X11_XOpenIM(data->display, NULL, data->classname, data->classname);
+
+        /* Reset the locale + X locale modifiers back to how they were,
+           locale first because the X locale modifiers depend on it. */
+        setlocale(LC_ALL, prev_locale);
+        X11_XSetLocaleModifiers(prev_xmods);
+
+        if (prev_locale) {
+            SDL_free(prev_locale);
+        }
+
+        if (prev_xmods) {
+            SDL_free(prev_xmods);
+        }
+    }
+#endif
+    /* Try to determine which scancodes are being used based on fingerprint */
+    best_distance = SDL_arraysize(fingerprint) + 1;
+    best_index = -1;
+    X11_XDisplayKeycodes(data->display, &min_keycode, &max_keycode);
+    for (i = 0; i < SDL_arraysize(fingerprint); ++i) {
+        fingerprint[i].value =
+            X11_XKeysymToKeycode(data->display, fingerprint[i].keysym) -
+            min_keycode;
+    }
+    for (i = 0; i < SDL_arraysize(scancode_set); ++i) {
+        /* Make sure the scancode set isn't too big */
+        if ((max_keycode - min_keycode + 1) <= scancode_set[i].table_size) {
+            continue;
+        }
+        distance = 0;
+        for (j = 0; j < SDL_arraysize(fingerprint); ++j) {
+            if (fingerprint[j].value < 0
+                || fingerprint[j].value >= scancode_set[i].table_size) {
+                distance += 1;
+            } else if (scancode_set[i].table[fingerprint[j].value] != fingerprint[j].scancode) {
+                distance += 1;
+            }
+        }
+        if (distance < best_distance) {
+            best_distance = distance;
+            best_index = i;
+        }
+    }
+    if (best_index >= 0 && best_distance <= 2) {
+#ifdef DEBUG_KEYBOARD
+        printf("Using scancode set %d, min_keycode = %d, max_keycode = %d, table_size = %d\n", best_index, min_keycode, max_keycode, scancode_set[best_index].table_size);
+#endif
+        SDL_memcpy(&data->key_layout[min_keycode], scancode_set[best_index].table,
+                   sizeof(SDL_Scancode) * scancode_set[best_index].table_size);
+    } else {
+        SDL_Keycode keymap[SDL_NUM_SCANCODES];
+
+        printf
+            ("Keyboard layout unknown, please report the following to the SDL forums/mailing list (https://discourse.libsdl.org/):\n");
+
+        /* Determine key_layout - only works on US QWERTY layout */
+        SDL_GetDefaultKeymap(keymap);
+        for (i = min_keycode; i <= max_keycode; ++i) {
+            KeySym sym;
+            sym = X11_KeyCodeToSym(_this, (KeyCode) i, 0);
+            if (sym != NoSymbol) {
+                SDL_Scancode scancode;
+                printf("code = %d, sym = 0x%X (%s) ", i - min_keycode,
+                       (unsigned int) sym, X11_XKeysymToString(sym));
+                scancode = X11_KeyCodeToSDLScancode(_this, i);
+                data->key_layout[i] = scancode;
+                if (scancode == SDL_SCANCODE_UNKNOWN) {
+                    printf("scancode not found\n");
+                } else {
+                    printf("scancode = %d (%s)\n", scancode, SDL_GetScancodeName(scancode));
+                }
+            }
+        }
+    }
+
+    X11_UpdateKeymap(_this);
+
+    SDL_SetScancodeName(SDL_SCANCODE_APPLICATION, "Menu");
+
+#ifdef SDL_USE_IME
+    SDL_IME_Init();
+#endif
+
+    return 0;
+}
+
+void
+X11_UpdateKeymap(_THIS)
+{
+    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
+    int i;
+    SDL_Scancode scancode;
+    SDL_Keycode keymap[SDL_NUM_SCANCODES];
+    unsigned char group = 0;
+
+    SDL_GetDefaultKeymap(keymap);
+
+#if SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM
+    if (data->xkb) {
+        XkbStateRec state;
+        X11_XkbGetUpdatedMap(data->display, XkbAllClientInfoMask, data->xkb);
+
+        if (X11_XkbGetState(data->display, XkbUseCoreKbd, &state) == Success) {
+            group = state.group;
+        }
+    }
+#endif
+
+
+    for (i = 0; i < SDL_arraysize(data->key_layout); i++) {
+        Uint32 key;
+
+        /* Make sure this is a valid scancode */
+        scancode = data->key_layout[i];
+        if (scancode == SDL_SCANCODE_UNKNOWN) {
+            continue;
+        }
+
+        /* See if there is a UCS keycode for this scancode */
+        key = X11_KeyCodeToUcs4(_this, (KeyCode)i, group);
+        if (key) {
+            keymap[scancode] = key;
+        } else {
+            SDL_Scancode keyScancode = X11_KeyCodeToSDLScancode(_this, (KeyCode)i);
+
+            switch (keyScancode) {
+                case SDL_SCANCODE_RETURN:
+                    keymap[scancode] = SDLK_RETURN;
+                    break;
+                case SDL_SCANCODE_ESCAPE:
+                    keymap[scancode] = SDLK_ESCAPE;
+                    break;
+                case SDL_SCANCODE_BACKSPACE:
+                    keymap[scancode] = SDLK_BACKSPACE;
+                    break;
+                case SDL_SCANCODE_TAB:
+                    keymap[scancode] = SDLK_TAB;
+                    break;
+                case SDL_SCANCODE_DELETE:
+                    keymap[scancode] = SDLK_DELETE;
+                    break;
+                default:
+                    keymap[scancode] = SDL_SCANCODE_TO_KEYCODE(keyScancode);
+                    break;
+            }
+        }
+    }
+    SDL_SetKeymap(0, keymap, SDL_NUM_SCANCODES);
+}
+
+void
+X11_QuitKeyboard(_THIS)
+{
+    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
+
+#if SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM
+    if (data->xkb) {
+        X11_XkbFreeKeyboard(data->xkb, 0, True);
+        data->xkb = NULL;
+    }
+#endif
+
+#ifdef SDL_USE_IME
+    SDL_IME_Quit();
+#endif
+}
+
+static void
+X11_ResetXIM(_THIS)
+{
+#ifdef X_HAVE_UTF8_STRING
+    SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
+    int i;
+
+    if (videodata && videodata->windowlist) {
+        for (i = 0; i < videodata->numwindows; ++i) {
+            SDL_WindowData *data = videodata->windowlist[i];
+            if (data && data->ic) {
+                /* Clear any partially entered dead keys */
+                char *contents = X11_Xutf8ResetIC(data->ic);
+                if (contents) {
+                    X11_XFree(contents);
+                }
+            }
+        }
+    }
+#endif
+}
+
+void
+X11_StartTextInput(_THIS)
+{
+    X11_ResetXIM(_this);
+}
+
+void
+X11_StopTextInput(_THIS)
+{
+    X11_ResetXIM(_this);
+#ifdef SDL_USE_IME
+    SDL_IME_Reset();
+#endif
+}
+
+void
+X11_SetTextInputRect(_THIS, SDL_Rect *rect)
+{
+    if (!rect) {
+        SDL_InvalidParamError("rect");
+        return;
+    }
+       
+#ifdef SDL_USE_IME
+    SDL_IME_UpdateTextRect(rect);
+#endif
+}
+
+#endif /* SDL_VIDEO_DRIVER_X11 */
+
+/* vi: set ts=4 sw=4 expandtab: */