ui: Move the support for touch inputs into RecoveryUI.
- Added detection for EV_ABS events in minui/events.cpp, if it's
allowed;
- Added listening and processing touch inputs in ui.cpp;
- Fixed an issue in recognizing swipe with multi-touch protocol A;
- Changed the logic in RecoveryUI::ProcessKey() to be swipe-aware. It
now allows turning on text mode with <power> + <swipe-up>.
The last change also fixed an issue on devices with protocol A: prior
to this CL, user may accidentally toggle the text mode during an OTA.
Because it was considered as a single-button device, a long tap that
sent BTN_TOUCH event would turn on text mode.
Test: Allow detecting touch inputs. Swiping (up, down, enter) works on
angler, angelfish, dorado respectively.
Bug: 36169090
Bug: 64307776
Change-Id: I4bc882b99114ce4ab414f8bdb8f4f7a525b8a8fd
(cherry picked from commit 5f8dd9951d986b65d98d6a9ea38003427e9e46df)
diff --git a/ui.h b/ui.h
index 7eb04ae..5cda7af 100644
--- a/ui.h
+++ b/ui.h
@@ -82,6 +82,12 @@
// otherwise.
virtual bool HasThreeButtons();
+ // Returns true if it has a power key.
+ virtual bool HasPowerKey() const;
+
+ // Returns true if it supports touch inputs.
+ virtual bool HasTouchScreen() const;
+
// Erases any queued-up keys.
virtual void FlushKeys();
@@ -129,7 +135,14 @@
unsigned int brightness_normal_;
unsigned int brightness_dimmed_;
+ // Whether we should listen for touch inputs (default: false).
+ bool touch_screen_allowed_;
+
private:
+ // The sensitivity when detecting a swipe.
+ const int kTouchLowThreshold;
+ const int kTouchHighThreshold;
+
// Key event input queue
pthread_mutex_t key_queue_mutex;
pthread_cond_t key_queue_cond;
@@ -147,6 +160,16 @@
bool has_power_key;
bool has_up_key;
bool has_down_key;
+ bool has_touch_screen;
+
+ // Touch event related variables. See the comments in RecoveryUI::OnInputEvent().
+ int touch_slot_;
+ int touch_X_;
+ int touch_Y_;
+ int touch_start_X_;
+ int touch_start_Y_;
+ bool touch_finger_down_;
+ bool touch_swiping_;
struct key_timer_t {
RecoveryUI* ui;
@@ -157,6 +180,7 @@
pthread_t input_thread_;
void OnKeyDetected(int key_code);
+ void OnTouchDetected(int dx, int dy);
int OnInputEvent(int fd, uint32_t epevents);
void ProcessKey(int key_code, int updown);