From 9e1d6e24a028ec96fb11ba943769764665fb024c Mon Sep 17 00:00:00 2001
From: Harry Jeffery <harry@exec64.co.uk>
Date: Fri, 23 Aug 2019 23:34:02 +0100
Subject: wl_window: Maintain keyboard modifiers state

---
 src/imv.c       |  6 ++++++
 src/keyboard.c  |  6 ++++++
 src/keyboard.h  |  4 ++++
 src/window.h    |  6 ++++++
 src/wl_window.c | 16 ++++++++++++----
 5 files changed, 34 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/imv.c b/src/imv.c
index 6376ee5..269a70a 100644
--- a/src/imv.c
+++ b/src/imv.c
@@ -460,6 +460,12 @@ static void event_handler(void *data, const struct imv_event *e)
     case IMV_EVENT_KEYBOARD:
       key_handler(imv, e->data.keyboard.scancode, e->data.keyboard. pressed);
       break;
+    case IMV_EVENT_KEYBOARD_MODS:
+      imv_keyboard_update_mods(imv->keyboard,
+          e->data.keyboard_mods.depressed,
+          e->data.keyboard_mods.latched,
+          e->data.keyboard_mods.locked);
+      break;
     case IMV_EVENT_MOUSE_MOTION:
       if (imv_window_get_mouse_button(imv->window, 1)) {
         imv_viewport_move(imv->view, e->data.mouse_motion.dx,
diff --git a/src/keyboard.c b/src/keyboard.c
index af79006..55e4e49 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -55,6 +55,12 @@ void imv_keyboard_update_key(struct imv_keyboard *keyboard, int scancode, bool p
   xkb_state_update_key(keyboard->state, scancode + scancode_offset, pressed ? XKB_KEY_DOWN : XKB_KEY_UP);
 }
 
+void imv_keyboard_update_mods(struct imv_keyboard *keyboard,
+    int depressed, int latched, int locked)
+{
+  xkb_state_update_mask(keyboard->state, depressed, latched, locked, 0, 0, 0);
+}
+
 static const char *describe_prefix(struct imv_keyboard *keyboard)
 {
   const bool ctrl = (xkb_state_mod_name_is_active(keyboard->state, XKB_MOD_NAME_CTRL, XKB_STATE_MODS_EFFECTIVE) > 0);
diff --git a/src/keyboard.h b/src/keyboard.h
index 7bbb202..05036c4 100644
--- a/src/keyboard.h
+++ b/src/keyboard.h
@@ -15,6 +15,10 @@ void imv_keyboard_free(struct imv_keyboard *keyboard);
 /* Notify the keyboard of the state of a key */
 void imv_keyboard_update_key(struct imv_keyboard *keyboard, int scancode, bool pressed);
 
+/* Notify the keyboard of the state of the modifiers */
+void imv_keyboard_update_mods(struct imv_keyboard *keyboard,
+    int depressed, int latched, int locked);
+
 /* Write the null-terminated name of the key corresponding to scancode into buf */
 size_t imv_keyboard_keyname(struct imv_keyboard *keyboard, int scancode, char *buf, size_t buflen);
 
diff --git a/src/window.h b/src/window.h
index 978278c..eff00ab 100644
--- a/src/window.h
+++ b/src/window.h
@@ -9,6 +9,7 @@ enum imv_event_type {
   IMV_EVENT_CLOSE,
   IMV_EVENT_RESIZE,
   IMV_EVENT_KEYBOARD,
+  IMV_EVENT_KEYBOARD_MODS,
   IMV_EVENT_MOUSE_MOTION,
   IMV_EVENT_MOUSE_BUTTON,
   IMV_EVENT_MOUSE_SCROLL,
@@ -28,6 +29,11 @@ struct imv_event {
       int scancode;
       bool pressed;
     } keyboard;
+    struct {
+      int depressed;
+      int latched;
+      int locked;
+    } keyboard_mods;
     struct {
       double x, y, dx, dy;
     } mouse_motion;
diff --git a/src/wl_window.c b/src/wl_window.c
index ace66f0..e9a8a0f 100644
--- a/src/wl_window.c
+++ b/src/wl_window.c
@@ -152,13 +152,21 @@ static void keyboard_modifiers(void *data, struct wl_keyboard *keyboard,
     uint32_t serial, uint32_t mods_depressed, uint32_t mods_latched,
     uint32_t mods_locked, uint32_t group)
 {
-  (void)data;
   (void)keyboard;
   (void)serial;
-  (void)mods_depressed;
-  (void)mods_latched;
-  (void)mods_locked;
   (void)group;
+  struct imv_window *window = data;
+  struct imv_event e = {
+    .type = IMV_EVENT_KEYBOARD_MODS,
+    .data = {
+      .keyboard_mods = {
+        .depressed = mods_depressed,
+        .latched = mods_latched,
+        .locked = mods_locked,
+      }
+    }
+  };
+  imv_window_push_event(window, &e);
 }
 
 static void keyboard_repeat(void *data, struct wl_keyboard *keyboard,
-- 
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