wip: initial input handling

input.c

@@ -0,0 +1,173 @@
+#include "input.h"
+
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <threads.h>
+#include <sys/mman.h>
+
+#include <xkbcommon/xkbcommon.h>
+#include <xkbcommon/xkbcommon-keysyms.h>
+
+#define LOG_MODULE "input"
+#define LOG_ENABLE_DBG 1
+#include "log.h"
+#include "terminal.h"
+
+static void
+keyboard_keymap(void *data, struct wl_keyboard *wl_keyboard,
+                uint32_t format, int32_t fd, uint32_t size)
+{
+    struct terminal *term = data;
+
+    char *map_str = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+
+    /* TODO: free old context + keymap */
+
+    term->kbd.xkb = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
+    term->kbd.xkb_keymap = xkb_keymap_new_from_string(
+        term->kbd.xkb, map_str, XKB_KEYMAP_FORMAT_TEXT_V1,
+        XKB_KEYMAP_COMPILE_NO_FLAGS);
+
+    /* TODO: initialize in enter? */
+    term->kbd.xkb_state = xkb_state_new(term->kbd.xkb_keymap);
+
+    munmap(map_str, size);
+    close(fd);
+}
+
+static void
+keyboard_enter(void *data, struct wl_keyboard *wl_keyboard, uint32_t serial,
+               struct wl_surface *surface, struct wl_array *keys)
+{
+    LOG_DBG("enter");
+#if 0
+    uint32_t *key;
+    wl_array_for_each(key, keys)
+        xkb_state_update_key(xkb_state, *key, 1);
+#endif
+}
+
+static void
+keyboard_leave(void *data, struct wl_keyboard *wl_keyboard, uint32_t serial,
+               struct wl_surface *surface)
+{
+#if 0
+    struct terminal *term = data;
+    term->status = EXIT;
+#endif
+}
+
+static void
+keyboard_key(void *data, struct wl_keyboard *wl_keyboard, uint32_t serial,
+             uint32_t time, uint32_t key, uint32_t state)
+{
+    static bool mod_masks_initialized = false;
+    static xkb_mod_mask_t ctrl = -1;
+    static xkb_mod_mask_t alt = -1;
+    //static xkb_mod_mask_t shift = -1;
+
+    struct terminal *term = data;
+
+    if (!mod_masks_initialized) {
+        mod_masks_initialized = true;
+        ctrl = 1 << xkb_keymap_mod_get_index(term->kbd.xkb_keymap, "Control");
+        alt = 1 << xkb_keymap_mod_get_index(term->kbd.xkb_keymap, "Mod1");
+        //shift = 1 << xkb_keymap_mod_get_index(term->kbd.xkb_keymap, "Shift");
+    }
+
+    if (state == XKB_KEY_UP) {
+        mtx_lock(&term->kbd.repeat.mutex);
+        if (term->kbd.repeat.key == key) {
+            if (term->kbd.repeat.cmd != REPEAT_EXIT) {
+                term->kbd.repeat.cmd = REPEAT_STOP;
+                cnd_signal(&term->kbd.repeat.cond);
+            }
+        }
+        mtx_unlock(&term->kbd.repeat.mutex);
+        return;
+    }
+
+    key += 8;
+    xkb_keysym_t sym = xkb_state_key_get_one_sym(term->kbd.xkb_state, key);
+
+    xkb_mod_mask_t mods = xkb_state_serialize_mods(
+        term->kbd.xkb_state, XKB_STATE_MODS_EFFECTIVE);
+    xkb_mod_mask_t consumed = xkb_state_key_get_consumed_mods(term->kbd.xkb_state, key);
+    xkb_mod_mask_t significant = ctrl | alt /*| shift*/;
+    xkb_mod_mask_t effective_mods = mods & ~consumed & significant;
+
+#if 0
+    for (size_t i = 0; i < 32; i++) {
+        if (mods & (1 << i)) {
+            LOG_DBG("%s", xkb_keymap_mod_get_name(term->kbd.xkb_keymap, i));
+        }
+    }
+#endif
+
+    LOG_DBG("sym=%u, mod=0x%08x, consumed=0x%08x, significant=0x%08x, "
+            "effective=0x%08x",
+            sym, mods, consumed, significant, effective_mods);
+
+    if (sym == XKB_KEY_c && effective_mods == ctrl) {
+        kill(term->slave, SIGINT);
+
+    } else if (effective_mods == 0) {
+        char buf[128] = {0};
+        int count = xkb_state_key_get_utf8(term->kbd.xkb_state, key, buf, sizeof(buf));
+
+        if (count == 0)
+            return;
+
+        write(term->ptmx, buf, count);
+    }
+
+    mtx_lock(&term->kbd.repeat.mutex);
+    if (!term->kbd.repeat.dont_re_repeat) {
+        if (term->kbd.repeat.cmd != REPEAT_EXIT) {
+            term->kbd.repeat.cmd = REPEAT_START;
+            term->kbd.repeat.key = key - 8;
+            cnd_signal(&term->kbd.repeat.cond);
+        }
+    }
+    mtx_unlock(&term->kbd.repeat.mutex);
+}
+
+static void
+keyboard_modifiers(void *data, struct wl_keyboard *wl_keyboard, uint32_t serial,
+                   uint32_t mods_depressed, uint32_t mods_latched,
+                   uint32_t mods_locked, uint32_t group)
+{
+    struct terminal *term = data;
+
+    LOG_DBG("modifiers: depressed=0x%x, latched=0x%x, locked=0x%x, group=%u",
+            mods_depressed, mods_latched, mods_locked, group);
+
+    xkb_state_update_mask(
+        term->kbd.xkb_state, mods_depressed, mods_latched, mods_locked, 0, 0, group);
+}
+
+static void
+keyboard_repeat_info(void *data, struct wl_keyboard *wl_keyboard,
+                     int32_t rate, int32_t delay)
+{
+    struct terminal *term = data;
+    LOG_DBG("keyboard repeat: rate=%d, delay=%d", rate, delay);
+    term->kbd.repeat.rate = rate;
+    term->kbd.repeat.delay = delay;
+}
+
+const struct wl_keyboard_listener keyboard_listener = {
+    .keymap = &keyboard_keymap,
+    .enter = &keyboard_enter,
+    .leave = &keyboard_leave,
+    .key = &keyboard_key,
+    .modifiers = &keyboard_modifiers,
+    .repeat_info = &keyboard_repeat_info,
+};
+
+void
+input_repeat(struct terminal *term, uint32_t key)
+{
+    keyboard_key(term, NULL, 0, 0, key, XKB_KEY_DOWN);
+}