| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef FLUTTER_SHELL_PLATFORM_WINDOWS_WINDOW_BINDING_HANDLER_DELEGATE_H_ |
| #define FLUTTER_SHELL_PLATFORM_WINDOWS_WINDOW_BINDING_HANDLER_DELEGATE_H_ |
| |
| #include "flutter/shell/platform/embedder/embedder.h" |
| |
| namespace flutter { |
| |
| class WindowBindingHandlerDelegate { |
| public: |
| // Notifies delegate that backing window size has changed. |
| // Typically called by currently configured WindowBindingHandler |
| virtual void OnWindowSizeChanged(size_t width, size_t height) const = 0; |
| |
| // Notifies delegate that backing window mouse has moved. |
| // Typically called by currently configured WindowBindingHandler |
| virtual void OnPointerMove(double x, double y) = 0; |
| |
| // Notifies delegate that backing window mouse pointer button has been |
| // pressed. Typically called by currently configured WindowBindingHandler |
| virtual void OnPointerDown(double x, |
| double y, |
| FlutterPointerMouseButtons button) = 0; |
| |
| // Notifies delegate that backing window mouse pointer button has been |
| // released. Typically called by currently configured WindowBindingHandler |
| virtual void OnPointerUp(double x, |
| double y, |
| FlutterPointerMouseButtons button) = 0; |
| |
| // Notifies delegate that backing window mouse pointer has left the window. |
| // Typically called by currently configured WindowBindingHandler |
| virtual void OnPointerLeave() = 0; |
| |
| // Notifies delegate that backing window has received text. |
| // Typically called by currently configured WindowBindingHandler |
| virtual void OnText(const std::u16string&) = 0; |
| |
| // Notifies delegate that backing window size has received key press. |
| // Typically called by currently configured WindowBindingHandler |
| virtual void OnKey(int key, int scancode, int action, char32_t character) = 0; |
| |
| // Notifies delegate that backing window size has recevied scroll. |
| // Typically called by currently configured WindowBindingHandler |
| virtual void OnScroll(double x, |
| double y, |
| double delta_x, |
| double delta_y, |
| int scroll_offset_multiplier) = 0; |
| |
| // Notifies delegate that backing window size has had system font change. |
| // Typically called by currently configured WindowBindingHandler |
| virtual void OnFontChange() = 0; |
| }; |
| |
| } // namespace flutter |
| |
| #endif // FLUTTER_SHELL_PLATFORM_WINDOWS_WINDOW_BINDING_HANDLER_DELEGATE_H_ |