Sdk/Canvas: Add basic keyboard handler

SDK/src/NDK/BaseWidget.cpp

@@ -71,6 +71,11 @@ namespace Ndk
 		m_entities.erase(it);
 	}
 
+	void BaseWidget::GrabKeyboard()
+	{
+		m_canvas->SetKeyboardOwner(this);
+	}
+
 	void BaseWidget::Layout()
 	{
 		if (m_canvas)
@@ -112,4 +117,8 @@ namespace Ndk
 	void BaseWidget::OnMouseExit()
 	{
 	}
+
+	void BaseWidget::OnTextEntered(char32_t character, bool repeated)
+	{
+	}
 }

SDK/src/NDK/Canvas.cpp

@@ -57,6 +57,9 @@ namespace Ndk
 			if (m_hoveredWidget == &entry)
 				m_hoveredWidget = nullptr;
 
+			if (m_keyboardOwner == entry.widget)
+				m_keyboardOwner = nullptr;
+
 			entry = std::move(lastEntry);
 			entry.widget->UpdateCanvasIndex(index);
 			m_widgetBoxes.pop_back();
@@ -136,4 +139,10 @@ namespace Ndk
 			m_hoveredWidget = nullptr;
 		}
 	}
+
+	void Canvas::OnTextEntered(const Nz::EventHandler* eventHandler, const Nz::WindowEvent::TextEvent& event)
+	{
+		if (m_keyboardOwner)
+			m_keyboardOwner->OnTextEntered(event.character, event.repeated);
+	}
 }