university-app

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#include "flutter_window.h"
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#include <optional>
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#include "flutter/generated_plugin_registrant.h"
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FlutterWindow::FlutterWindow(const flutter::DartProject& project)
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    : project_(project) {}
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FlutterWindow::~FlutterWindow() {}
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bool FlutterWindow::OnCreate() {
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  if (!Win32Window::OnCreate()) {
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    return false;
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  }
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  RECT frame = GetClientArea();
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  // The size here must match the window dimensions to avoid unnecessary surface
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  // creation / destruction in the startup path.
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  flutter_controller_ = std::make_unique<flutter::FlutterViewController>(
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      frame.right - frame.left, frame.bottom - frame.top, project_);
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  // Ensure that basic setup of the controller was successful.
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  if (!flutter_controller_->engine() || !flutter_controller_->view()) {
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    return false;
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  }
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  RegisterPlugins(flutter_controller_->engine());
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  SetChildContent(flutter_controller_->view()->GetNativeWindow());
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  flutter_controller_->engine()->SetNextFrameCallback([&]() {
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    this->Show();
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  });
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  // Flutter can complete the first frame before the "show window" callback is
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  // registered. The following call ensures a frame is pending to ensure the
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  // window is shown. It is a no-op if the first frame hasn't completed yet.
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  flutter_controller_->ForceRedraw();
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  return true;
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}
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void FlutterWindow::OnDestroy() {
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  if (flutter_controller_) {
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    flutter_controller_ = nullptr;
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  }
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  Win32Window::OnDestroy();
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}
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LRESULT
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FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
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                              WPARAM const wparam,
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                              LPARAM const lparam) noexcept {
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  // Give Flutter, including plugins, an opportunity to handle window messages.
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  if (flutter_controller_) {
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    std::optional<LRESULT> result =
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        flutter_controller_->HandleTopLevelWindowProc(hwnd, message, wparam,
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                                                      lparam);
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    if (result) {
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      return *result;
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    }
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  }
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  switch (message) {
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    case WM_FONTCHANGE:
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      flutter_controller_->engine()->ReloadSystemFonts();
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      break;
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  }
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  return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
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}
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