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#include "cru/win/native/input_method.hpp"
#include "cru/common/logger.hpp"
#include "cru/platform/check.hpp"
#include "cru/win/exception.hpp"
#include "cru/win/native/window.hpp"
#include "cru/win/string.hpp"
#include "dpi_util.hpp"
#include <vector>
namespace cru::platform::native::win {
AutoHIMC::AutoHIMC(HWND hwnd) : hwnd_(hwnd) {
Expects(hwnd);
handle_ = ::ImmGetContext(hwnd);
}
AutoHIMC::AutoHIMC(AutoHIMC&& other)
: hwnd_(other.hwnd_), handle_(other.handle_) {
other.hwnd_ = nullptr;
other.handle_ = nullptr;
}
AutoHIMC& AutoHIMC::operator=(AutoHIMC&& other) {
if (this != &other) {
Object::operator=(std::move(other));
this->hwnd_ = other.hwnd_;
this->handle_ = other.handle_;
other.hwnd_ = nullptr;
other.handle_ = nullptr;
}
return *this;
}
AutoHIMC::~AutoHIMC() {
if (handle_) {
if (!::ImmReleaseContext(hwnd_, handle_))
log::Warn("AutoHIMC: Failed to release HIMC.");
}
}
WinInputMethodContext::WinInputMethodContext(
gsl::not_null<WinNativeWindow*> window)
: native_window_resolver_(window->GetResolver()) {
event_revoker_guards_.push_back(
EventRevokerGuard(window->NativeMessageEvent()->AddHandler(
std::bind(&WinInputMethodContext::OnWindowNativeMessage, this,
std::placeholders::_1))));
}
WinInputMethodContext::~WinInputMethodContext() {}
void WinInputMethodContext::EnableIME() {
// TODO!
}
void WinInputMethodContext::DisableIME() {
// TODO!
}
void WinInputMethodContext::CompleteComposition() {
// TODO!
}
void WinInputMethodContext::CancelComposition() {
// TODO!
}
const CompositionText& WinInputMethodContext::GetCompositionText() {
// TODO!
}
void WinInputMethodContext::SetCandidateWindowPosition(const Point& point) {
auto optional_himc = TryGetHIMC();
if (!optional_himc.has_value()) return;
auto himc = std::move(optional_himc).value();
::CANDIDATEFORM form;
form.dwIndex = 1;
form.dwStyle = CFS_CANDIDATEPOS;
form.ptCurrentPos = DipToPi(point);
if (!::ImmSetCandidateWindow(himc.Get(), &form))
log::Debug(
"WinInputMethodContext: Failed to set input method candidate window "
"position.");
}
IEvent<std::nullptr_t>* WinInputMethodContext::CompositionStartEvent() {
return &composition_start_event_;
}
IEvent<std::nullptr_t>* WinInputMethodContext::CompositionEndEvent() {
return &composition_end_event_;
};
IEvent<std::nullptr_t>* WinInputMethodContext::CompositionEvent() {
return &composition_event_;
}
void WinInputMethodContext::OnWindowNativeMessage(
WindowNativeMessageEventArgs& args) {
const auto message = args.GetWindowMessage();
switch (message.msg) {
case WM_IME_COMPOSITION: {
composition_event_.Raise(nullptr);
break;
}
case WM_IME_STARTCOMPOSITION: {
composition_start_event_.Raise(nullptr);
break;
}
case WM_IME_ENDCOMPOSITION: {
composition_end_event_.Raise(nullptr);
break;
}
}
}
std::optional<AutoHIMC> WinInputMethodContext::TryGetHIMC() {
const auto native_window = Resolve(native_window_resolver_.get());
if (native_window == nullptr) return std::nullopt;
const auto hwnd = native_window->GetWindowHandle();
return AutoHIMC{hwnd};
}
WinInputMethodManager::WinInputMethodManager(WinUiApplication*) {}
WinInputMethodManager::~WinInputMethodManager() {}
std::unique_ptr<IInputMethodContext> WinInputMethodManager::GetContext(
INativeWindow* window) {
Expects(window);
const auto w = CheckPlatform<WinNativeWindow>(window, GetPlatformId());
return std::make_unique<WinInputMethodContext>(w);
}
} // namespace cru::platform::native::win
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