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content / browser / renderer_host / input / stylus_handwriting_controller_win.cc [blame]
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/input/stylus_handwriting_controller_win.h"
#include "components/stylus_handwriting/win/features.h"
#include "content/public/browser/browser_thread.h"
#include "ui/base/ime/text_input_client.h"
#include "ui/base/ime/win/tsf_bridge.h"
namespace content {
namespace {
StylusHandwritingControllerWin* g_instance = nullptr;
StylusHandwritingControllerWin* g_instance_for_testing = nullptr;
} // namespace
// static
base::AutoReset<StylusHandwritingControllerWin*>
StylusHandwritingControllerWin::SetInstanceForTesting(
StylusHandwritingControllerWin* instance) {
return {&g_instance_for_testing, instance};
}
// static
bool StylusHandwritingControllerWin::IsHandwritingAPIAvailable() {
CHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (!stylus_handwriting::win::IsStylusHandwritingWinEnabled()) {
return false;
}
return GetInstance();
}
// static
void StylusHandwritingControllerWin::Initialize() {
CHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (!stylus_handwriting::win::IsStylusHandwritingWinEnabled() ||
g_instance_for_testing) {
return;
}
// See the constructor and BindInterfaces() for more initialization details
// where g_instance is set.
static base::NoDestructor<StylusHandwritingControllerWin> instance;
}
// static
StylusHandwritingControllerWin* StylusHandwritingControllerWin::GetInstance() {
CHECK_CURRENTLY_ON(content::BrowserThread::UI);
CHECK(stylus_handwriting::win::IsStylusHandwritingWinEnabled());
return g_instance_for_testing ? g_instance_for_testing : g_instance;
}
// static
Microsoft::WRL::ComPtr<ITfThreadMgr>
StylusHandwritingControllerWin::GetThreadManager() {
return ui::TSFBridge::GetInstance()
? ui::TSFBridge::GetInstance()->GetThreadManager()
: nullptr;
}
StylusHandwritingControllerWin::StylusHandwritingControllerWin() {
BindInterfaces();
}
StylusHandwritingControllerWin::~StylusHandwritingControllerWin() = default;
void StylusHandwritingControllerWin::OnStartStylusWriting(
OnFocusHandwritingTargetCallback callback,
uint32_t pointer_id,
uint64_t stroke_id,
ui::TextInputClient& text_input_client) {
// TODO(crbug.com/355578906): Implement
// SetInputEvaluation(::TfInputEvaluation::TF_IE_HANDWRITING) logic.
}
void StylusHandwritingControllerWin::OnFocusHandled(
ui::TextInputClient& text_input_client) {
// TODO(crbug.com/355578906): Forward call to ::ITfHandwritingSink controller.
}
void StylusHandwritingControllerWin::OnFocusFailed(
ui::TextInputClient& text_input_client) {
// TODO(crbug.com/355578906): Forward call to ::ITfHandwritingSink controller.
}
void StylusHandwritingControllerWin::BindInterfaces() {
if (auto thread_manager = GetThreadManager()) {
const bool initialized_successfully =
SUCCEEDED(thread_manager.As(&handwriting_)) &&
SUCCEEDED(handwriting_->SetHandwritingState(
::TF_HANDWRITING_POINTERDELIVERY));
if (initialized_successfully) {
g_instance = this;
}
}
}
} // namespace content