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d0d6a4c236
* Add flutter_windows_view and window_binding_handler Switch input handling infra to FlutterWindowsView win32_flutter_window implement WindowBindingHandler Strip unneeded functionality from win32flutterwindow Fulfill WindowBindingHandler interface in Win32FlutterWindow Add implementations for missing input handling in Win32FlutterWindow Cleanup dead code Correctly hook up rendering again Fix resizing clang-format Fix clipboard Cleanup Rename Add comments cleanup * clang-format * CR Feedback * clang-format; gn format * Fix licensing * CR feedback * CR feedback * CR feedback * Git rid of unnecessar :: prefixes * Extract WindowBindingHandlerDelegate as an interface * Missing file * Extract physical window bounds as a struct * CR Feedback * CR feedback * clang-format Co-authored-by: Stuart Morgan <stuartmorgan@google.com>
128 lines
4.1 KiB
C++
128 lines
4.1 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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#include "flutter/shell/platform/windows/key_event_handler.h"
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#include <windows.h>
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#include <iostream>
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#include "flutter/shell/platform/common/cpp/json_message_codec.h"
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static constexpr char kChannelName[] = "flutter/keyevent";
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static constexpr char kKeyCodeKey[] = "keyCode";
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static constexpr char kScanCodeKey[] = "scanCode";
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static constexpr char kCharacterCodePointKey[] = "characterCodePoint";
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static constexpr char kModifiersKey[] = "modifiers";
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static constexpr char kKeyMapKey[] = "keymap";
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static constexpr char kTypeKey[] = "type";
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static constexpr char kWindowsKeyMap[] = "windows";
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static constexpr char kKeyUp[] = "keyup";
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static constexpr char kKeyDown[] = "keydown";
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namespace flutter {
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// Re-definition of the modifiers for compatibility with the Flutter framework.
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// These have to be in sync with the framework's RawKeyEventDataWindows
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// modifiers definition.
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// https://github.com/flutter/flutter/blob/19ff596979e407c484a32f4071420fca4f4c885f/packages/flutter/lib/src/services/raw_keyboard_windows.dart#L203
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const int kShift = 1 << 0;
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const int kShiftLeft = 1 << 1;
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const int kShiftRight = 1 << 2;
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const int kControl = 1 << 3;
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const int kControlLeft = 1 << 4;
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const int kControlRight = 1 << 5;
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const int kAlt = 1 << 6;
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const int kAltLeft = 1 << 7;
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const int kAltRight = 1 << 8;
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const int kWinLeft = 1 << 9;
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const int kWinRight = 1 << 10;
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const int kCapsLock = 1 << 11;
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const int kNumLock = 1 << 12;
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const int kScrollLock = 1 << 13;
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namespace {
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/// Calls GetKeyState() an all modifier keys and packs the result in an int,
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/// with the re-defined values declared above for compatibility with the Flutter
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/// framework.
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int GetModsForKeyState() {
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int mods = 0;
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if (GetKeyState(VK_SHIFT) < 0)
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mods |= kShift;
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if (GetKeyState(VK_LSHIFT) < 0)
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mods |= kShiftLeft;
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if (GetKeyState(VK_RSHIFT) < 0)
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mods |= kShiftRight;
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if (GetKeyState(VK_CONTROL) < 0)
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mods |= kControl;
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if (GetKeyState(VK_LCONTROL) < 0)
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mods |= kControlLeft;
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if (GetKeyState(VK_RCONTROL) < 0)
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mods |= kControlRight;
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if (GetKeyState(VK_MENU) < 0)
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mods |= kAlt;
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if (GetKeyState(VK_LMENU) < 0)
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mods |= kAltLeft;
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if (GetKeyState(VK_RMENU) < 0)
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mods |= kAltRight;
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if (GetKeyState(VK_LWIN) < 0)
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mods |= kWinLeft;
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if (GetKeyState(VK_RWIN) < 0)
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mods |= kWinRight;
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if (GetKeyState(VK_CAPITAL) < 0)
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mods |= kCapsLock;
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if (GetKeyState(VK_NUMLOCK) < 0)
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mods |= kNumLock;
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if (GetKeyState(VK_SCROLL) < 0)
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mods |= kScrollLock;
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return mods;
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}
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} // namespace
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KeyEventHandler::KeyEventHandler(flutter::BinaryMessenger* messenger)
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: channel_(
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std::make_unique<flutter::BasicMessageChannel<rapidjson::Document>>(
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messenger,
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kChannelName,
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&flutter::JsonMessageCodec::GetInstance())) {}
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KeyEventHandler::~KeyEventHandler() = default;
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void KeyEventHandler::TextHook(FlutterWindowsView* view,
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const std::u16string& code_point) {}
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void KeyEventHandler::KeyboardHook(FlutterWindowsView* view,
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int key,
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int scancode,
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int action,
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char32_t character) {
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// TODO: Translate to a cross-platform key code system rather than passing
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// the native key code.
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rapidjson::Document event(rapidjson::kObjectType);
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auto& allocator = event.GetAllocator();
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event.AddMember(kKeyCodeKey, key, allocator);
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event.AddMember(kScanCodeKey, scancode, allocator);
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event.AddMember(kCharacterCodePointKey, character, allocator);
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event.AddMember(kKeyMapKey, kWindowsKeyMap, allocator);
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event.AddMember(kModifiersKey, GetModsForKeyState(), allocator);
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switch (action) {
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case WM_KEYDOWN:
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event.AddMember(kTypeKey, kKeyDown, allocator);
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break;
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case WM_KEYUP:
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event.AddMember(kTypeKey, kKeyUp, allocator);
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break;
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default:
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std::cerr << "Unknown key event action: " << action << std::endl;
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return;
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}
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channel_->Send(event);
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}
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} // namespace flutter
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