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efe7683311
Originally font change notification was handled by forwarding WM_FONTCHANGE to the Flutter HWND, to avoid adding new API surface, but that's not a good solution in a multi-window scenario, and it would require a completely different solution for UWP. It also requires non-obvious plumbing in the runner. This replaces that with an explicit API, so that there's a clean and obvious way for the runner to trigger this event.
58 lines
2.4 KiB
C++
58 lines
2.4 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_SHELL_PLATFORM_WINDOWS_WINDOW_BINDING_HANDLER_DELEGATE_H_
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#define FLUTTER_SHELL_PLATFORM_WINDOWS_WINDOW_BINDING_HANDLER_DELEGATE_H_
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#include "flutter/shell/platform/embedder/embedder.h"
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namespace flutter {
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class WindowBindingHandlerDelegate {
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public:
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// Notifies delegate that backing window size has changed.
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// Typically called by currently configured WindowBindingHandler
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virtual void OnWindowSizeChanged(size_t width, size_t height) const = 0;
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// Notifies delegate that backing window mouse has moved.
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// Typically called by currently configured WindowBindingHandler
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virtual void OnPointerMove(double x, double y) = 0;
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// Notifies delegate that backing window mouse pointer button has been
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// pressed. Typically called by currently configured WindowBindingHandler
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virtual void OnPointerDown(double x,
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double y,
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FlutterPointerMouseButtons button) = 0;
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// Notifies delegate that backing window mouse pointer button has been
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// released. Typically called by currently configured WindowBindingHandler
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virtual void OnPointerUp(double x,
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double y,
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FlutterPointerMouseButtons button) = 0;
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// Notifies delegate that backing window mouse pointer has left the window.
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// Typically called by currently configured WindowBindingHandler
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virtual void OnPointerLeave() = 0;
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// Notifies delegate that backing window has received text.
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// Typically called by currently configured WindowBindingHandler
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virtual void OnText(const std::u16string&) = 0;
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// Notifies delegate that backing window size has received key press.
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// Typically called by currently configured WindowBindingHandler
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virtual void OnKey(int key, int scancode, int action, char32_t character) = 0;
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// Notifies delegate that backing window size has recevied scroll.
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// Typically called by currently configured WindowBindingHandler
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virtual void OnScroll(double x,
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double y,
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double delta_x,
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double delta_y,
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int scroll_offset_multiplier) = 0;
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};
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} // namespace flutter
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#endif // FLUTTER_SHELL_PLATFORM_WINDOWS_WINDOW_BINDING_HANDLER_DELEGATE_H_
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