notify about pending long press

Recovery changes:

- add a method to the UI class that is called when a key is held down
  long enough to be a "long press" (but before it is released).
  Device-specific subclasses can override this to indicate a long
  press.

- do color selection for ScreenRecoveryUI's menu-and-log drawing
  function.  Subclasses can override this to customize the colors they
  use for various elements.

- Include the value of ro.build.display.id in the menu headers, so you
  can see on the screen what version of recovery you are running.

Change-Id: I426a6daf892b9011638e2035aebfa2831d4f596d

1 files changed, 20 insertions, 1 deletions

diff --git a/ui.h b/ui.h
index aca7b7b..6c8987a 100644
--- a/ui.h
+++ b/ui.h
@@ -80,8 +80,17 @@ class RecoveryUI {
     enum KeyAction { ENQUEUE, TOGGLE, REBOOT, IGNORE };
     virtual KeyAction CheckKey(int key);
 
+    // Called immediately before each call to CheckKey(), tell you if
+    // the key was long-pressed.
     virtual void NextCheckKeyIsLong(bool is_long_press);
 
+    // Called when a key is held down long enough to have been a
+    // long-press (but before the key is released).  This means that
+    // if the key is eventually registered (released without any other
+    // keys being pressed in the meantime), NextCheckKeyIsLong() will
+    // be called with "true".
+    virtual void KeyLongPress(int key);
+
     // --- menu display ---
 
     // Display some header text followed by a menu of items, which appears
@@ -108,15 +117,25 @@ private:
     int key_queue[256], key_queue_len;
     char key_pressed[KEY_MAX + 1];     // under key_queue_mutex
     int key_last_down;                 // under key_queue_mutex
-    clock_t key_down_time;             // under key_queue_mutex
+    bool key_long_press;               // under key_queue_mutex
+    int key_down_count;                // under key_queue_mutex
     int rel_sum;
 
+    typedef struct {
+        RecoveryUI* ui;
+        int key_code;
+        int count;
+    } key_timer_t;
+
     pthread_t input_t;
 
     static void* input_thread(void* cookie);
     static int input_callback(int fd, short revents, void* data);
     void process_key(int key_code, int updown);
     bool usb_connected();
+
+    static void* time_key_helper(void* cookie);
+    void time_key(int key_code, int count);
 };
 
 #endif  // RECOVERY_UI_H