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// 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_callback_sink_win.h"
#include "components/stylus_handwriting/win/features.h"
#include "content/public/browser/browser_thread.h"
#include "ui/display/win/screen_win.h"
#include "ui/gfx/geometry/rect.h"
namespace content {
StylusHandwritingCallbackSinkWin::StylusHandwritingCallbackSinkWin() = default;
StylusHandwritingCallbackSinkWin::~StylusHandwritingCallbackSinkWin() {
if (sink_cookie_ == TF_INVALID_COOKIE) {
return;
}
source_->UnadviseSink(sink_cookie_);
sink_cookie_ = TF_INVALID_COOKIE;
}
HRESULT STDMETHODCALLTYPE
StylusHandwritingCallbackSinkWin::RuntimeClassInitialize() {
const auto thread_manager =
StylusHandwritingControllerWin::GetThreadManager();
return (thread_manager && SUCCEEDED(thread_manager.As(&source_)) &&
SUCCEEDED(source_->AdviseSink(__uuidof(::ITfHandwritingSink), this,
&sink_cookie_)))
? S_OK
: E_FAIL;
}
HRESULT STDMETHODCALLTYPE
StylusHandwritingCallbackSinkWin::DetermineProximateHandwritingTarget(
::ITfDetermineProximateHandwritingTargetArgs* args) {
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE
StylusHandwritingCallbackSinkWin::FocusHandwritingTarget(
::ITfFocusHandwritingTargetArgs* args) {
CHECK(handwriting_callback_);
HWND window;
RECT rect;
SIZE distance_threshold;
HRESULT hr = args->GetPointerTargetInfo(&window, &rect, &distance_threshold);
if (FAILED(hr)) {
return hr;
}
handwriting_callback_.Run(
display::win::GetScreenWin()->ScreenToDIPRect(window, gfx::Rect(rect)),
display::win::GetScreenWin()->ScreenToDIPSize(
window, gfx::Size(distance_threshold.cx, distance_threshold.cy)));
// Check that we have no pending callback.
DCHECK(!pending_target_args_);
pending_target_args_ = args;
// The response is later be set via OnEditElementFocusedForStylusWriting
return TF_S_ASYNC;
}
void StylusHandwritingCallbackSinkWin::OnFocusHandled() {
if (pending_target_args_) {
pending_target_args_->SetResponse(::TF_HANDWRITING_TARGET_FOCUSED);
pending_target_args_.Reset();
}
}
void StylusHandwritingCallbackSinkWin::OnFocusFailed() {
if (pending_target_args_) {
pending_target_args_->SetResponse(::TF_NO_HANDWRITING_TARGET);
pending_target_args_.Reset();
}
}
} // namespace content
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