Send ASCII chars from USB serial to selected widget (#1708)

* Initial commit for keyboard emulation
* Added on_keyboard to some widgets
* TextEdit partly
* Multi key send at once
* Frequency control support
* Fix encoder emulation
* Add keyboard to geomap
* More widgets

firmware/application/event_m0.cpp

@@ -242,6 +242,18 @@ void EventDispatcher::emulateTouch(ui::TouchEvent event) {
     on_touch_event(event);
 }
 
+void EventDispatcher::emulateKeyboard(ui::KeyboardEvent event) {
+    on_keyboard_event(event);
+}
+
+void EventDispatcher::on_keyboard_event(ui::KeyboardEvent event) {
+    // send the key to focused widget, or parent if not accepts it
+    auto target = context.focus_manager().focus_widget();
+    while ((target != nullptr) && !target->on_keyboard(event)) {
+        target = target->parent();
+    }
+}
+
 void EventDispatcher::on_touch_event(ui::TouchEvent event) {
     /* TODO: Capture widget receiving the Start event, send Move and
      * End events to the same widget.

firmware/application/event_m0.hpp

@@ -87,6 +87,7 @@ class EventDispatcher {
     }
 
     void emulateTouch(ui::TouchEvent event);
+    void emulateKeyboard(ui::KeyboardEvent event);
 
    private:
     static Thread* thread_event_loop;
@@ -113,6 +114,7 @@ class EventDispatcher {
     ui::Widget* captured_widget{nullptr};
 
     void on_touch_event(ui::TouchEvent event);
+    void on_keyboard_event(ui::KeyboardEvent event);
 
     // void blink_timer();
     void handle_lcd_frame_sync();

firmware/application/irq_controls.cpp

@@ -171,12 +171,13 @@ static bool encoder_update(const uint8_t raw) {
 }
 
 static bool encoder_read() {
-    const auto delta = encoder.update(
-        encoder_debounce[0].state() | (injected_encoder == 1),
-        encoder_debounce[1].state() | (injected_encoder == 2));
+    auto delta = encoder.update(encoder_debounce[0].state(), encoder_debounce[1].state());
 
-    if (injected_encoder > 0)
+    if (injected_encoder > 0) {
+        if (injected_encoder == 1) delta = -1;
+        if (injected_encoder == 2) delta = 1;
         injected_encoder = 0;
+    }
 
     if (delta != 0) {
         encoder_position += delta;

firmware/application/ui/ui_freqlist.cpp

@@ -92,6 +92,28 @@ void FreqManUIList::on_blur() {
     set_dirty();
 }
 
+bool FreqManUIList::on_keyboard(const KeyboardEvent key) {
+    if (!db_ || db_->empty())
+        return false;
+
+    auto delta = 0;
+    if (key == '-' && get_index() > 0) delta = -1;
+    if (key == '+' && get_index() < db_->entry_count() - 1) delta = 1;
+    if (delta != 0) {
+        adjust_selected_index(delta);
+        set_dirty();
+        return true;
+    }
+    if (key == 10) {
+        if (on_select) {
+            on_select(get_index());
+            return true;
+        }
+    }
+
+    return false;
+}
+
 bool FreqManUIList::on_key(const KeyEvent key) {
     if (!db_ || db_->empty())
         return false;

firmware/application/ui/ui_freqlist.hpp

@@ -50,6 +50,8 @@ class FreqManUIList : public Widget {
     void on_blur() override;
     bool on_key(const KeyEvent key) override;
     bool on_encoder(EncoderEvent delta) override;
+    bool on_keyboard(const KeyboardEvent event) override;
+
     void set_parent_rect(Rect new_parent_rect) override;
 
     void set_index(size_t index);

firmware/application/ui/ui_geomap.cpp

@@ -293,6 +293,13 @@ void GeoMap::paint(Painter& painter) {
     }
 }
 
+bool GeoMap::on_keyboard(KeyboardEvent key) {
+    if (key == '+' || key == ' ') return on_encoder(1);
+    if (key == '-') return on_encoder(-1);
+
+    return false;
+}
+
 bool GeoMap::on_touch(const TouchEvent event) {
     if ((event.type == TouchEvent::Type::Start) && (mode_ == PROMPT)) {
         set_highlighted(true);

firmware/application/ui/ui_geomap.hpp

@@ -162,6 +162,7 @@ class GeoMap : public Widget {
 
     bool on_touch(const TouchEvent event) override;
     bool on_encoder(const EncoderEvent delta) override;
+    bool on_keyboard(const KeyboardEvent event) override;
 
     bool init();
     void set_mode(GeoMapMode mode);

firmware/application/ui/ui_menu.cpp

@@ -269,6 +269,19 @@ bool MenuView::on_key(const KeyEvent key) {
     }
 }
 
+bool MenuView::on_keyboard(const KeyboardEvent key) {
+    if (key == '-') return set_highlighted(highlighted_item - 1);
+    if (key == '+') return set_highlighted(highlighted_item + 1);
+    if (key == 10) {
+        if (menu_items[highlighted_item].on_select) {
+            menu_items[highlighted_item].on_select(KeyEvent::Right);
+        }
+        return true;
+    }
+
+    return false;
+}
+
 bool MenuView::on_encoder(const EncoderEvent event) {
     set_highlighted(highlighted_item + event);
     return true;

firmware/application/ui/ui_menu.hpp

@@ -97,6 +97,7 @@ class MenuView : public View {
     void on_blur() override;
     bool on_key(const KeyEvent event) override;
     bool on_encoder(const EncoderEvent event) override;
+    bool on_keyboard(const KeyboardEvent event) override;
 
    private:
     void update_items();

firmware/application/ui/ui_receiver.cpp

@@ -165,12 +165,18 @@ bool FrequencyField::on_key(KeyEvent event) {
     return false;
 }
 
+bool FrequencyField::on_keyboard(KeyboardEvent key) {
+    if (key == '+' || key == ' ') return on_encoder(1);
+    if (key == '-') return on_encoder(-1);
+
+    return false;
+}
+
 bool FrequencyField::on_encoder(const EncoderEvent delta) {
     if (digit_mode_)
         set_value(value_ + (delta * digit_step()));
     else
         set_value(value_ + (delta * step_));
-
     return true;
 }
 
@@ -321,6 +327,25 @@ void FrequencyKeypadView::on_button(Button& button) {
     update_text();
 }
 
+bool FrequencyKeypadView::on_keyboard(const KeyboardEvent key) {
+    if (key == 8) {
+        digit_delete();
+        update_text();
+        return true;
+    }
+    if (key >= '0' && key <= '9') {
+        digit_add(key);
+        update_text();
+        return true;
+    }
+    if (key == '.') {
+        field_toggle();
+        update_text();
+        return true;
+    }
+    return false;
+}
+
 void FrequencyKeypadView::digit_add(const char c) {
     if (state == State::DigitMHz) {
         if (clear_field_if_digits_entered) {

firmware/application/ui/ui_receiver.hpp

@@ -61,6 +61,7 @@ class FrequencyField : public Widget {
 
     bool on_key(KeyEvent event) override;
     bool on_encoder(EncoderEvent delta) override;
+    bool on_keyboard(KeyboardEvent key) override;
     bool on_touch(TouchEvent event) override;
     void on_focus() override;
     void on_blur() override;
@@ -202,6 +203,7 @@ class FrequencyKeypadView : public View {
     rf::Frequency value() const;
     void set_value(const rf::Frequency new_value);
     bool on_encoder(const EncoderEvent delta) override;
+    bool on_keyboard(const KeyboardEvent key) override;
 
    private:
     int16_t focused_button = 0;

firmware/application/usb_serial_shell.cpp

@@ -365,6 +365,44 @@ static void cmd_touch(BaseSequentialStream* chp, int argc, char* argv[]) {
     chprintf(chp, "ok\r\n");
 }
 
+// send ascii keys in 2 char hex representation. Can send multiple keys at once like: keyboard 414243 (this will be ABC)
+static void cmd_keyboard(BaseSequentialStream* chp, int argc, char* argv[]) {
+    if (argc != 1) {
+        chprintf(chp, "usage: keyboard XX\r\n");
+        return;
+    }
+
+    auto evtd = getEventDispatcherInstance();
+    if (evtd == NULL) {
+        chprintf(chp, "error\r\n");
+    }
+
+    size_t data_string_len = strlen(argv[0]);
+    if (data_string_len % 2 != 0) {
+        chprintf(chp, "usage: keyboard XXXX\r\n");
+        return;
+    }
+
+    for (size_t i = 0; i < data_string_len; i++) {
+        char c = argv[0][i];
+        if ((c < '0' || c > '9') && (c < 'A' || c > 'F')) {
+            chprintf(chp, "usage: keyboard XX\r\n");
+            return;
+        }
+    }
+
+    char buffer[3] = {0, 0, 0};
+
+    for (size_t i = 0; i < data_string_len / 2; i++) {
+        buffer[0] = argv[0][i * 2];
+        buffer[1] = argv[0][i * 2 + 1];
+        uint8_t chr = (uint8_t)strtol(buffer, NULL, 16);
+        evtd->emulateKeyboard(chr);
+    }
+
+    chprintf(chp, "ok\r\n");
+}
+
 static void cmd_sd_list_dir(BaseSequentialStream* chp, int argc, char* argv[]) {
     if (argc != 1) {
         chprintf(chp, "usage: ls /\r\n");
@@ -866,6 +904,7 @@ static const ShellCommand commands[] = {
     {"read_memory", cmd_read_memory},
     {"button", cmd_button},
     {"touch", cmd_touch},
+    {"keyboard", cmd_keyboard},
     {"ls", cmd_sd_list_dir},
     {"rm", cmd_sd_delete},
     {"open", cmd_sd_open},

firmware/common/ui.hpp

@@ -371,6 +371,7 @@ enum class KeyEvent : uint8_t {
 };
 
 using EncoderEvent = int32_t;
+using KeyboardEvent = uint8_t;
 
 struct TouchEvent {
     enum class Type : uint32_t {