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#include "pch.h"
#include "ServoControl.h"
#include "ServoControl.g.cpp"
#include <stdlib.h>
using namespace std::placeholders;
using namespace winrt::Windows::UI::Xaml;
using namespace winrt::Windows::UI::Core;
using namespace winrt::Windows::Foundation;
using namespace concurrency;
using namespace winrt::servo;
namespace winrt::ServoApp::implementation {
ServoControl::ServoControl() {
DefaultStyleKey(winrt::box_value(L"ServoApp.ServoControl"));
Loaded(std::bind(&ServoControl::OnLoaded, this, _1, _2));
}
void ServoControl::Shutdown() {
if (mServo != nullptr) {
if (!mLooping) {
// FIXME: this should not happen. In that case, we can't send the
// shutdown event to Servo.
} else {
RunOnGLThread([=] { mServo->RequestShutdown(); });
mLoopTask->wait();
mLoopTask.reset();
mServo.reset();
}
}
}
void ServoControl::OnLoaded(IInspectable const &, RoutedEventArgs const &) {
Panel().PointerReleased(
std::bind(&ServoControl::OnSurfaceClicked, this, _1, _2));
Panel().ManipulationDelta(
std::bind(&ServoControl::OnSurfaceManipulationDelta, this, _1, _2));
InitializeConditionVariable(&mGLCondVar);
InitializeCriticalSection(&mGLLock);
CreateRenderSurface();
StartRenderLoop();
}
Controls::SwapChainPanel ServoControl::Panel() {
// FIXME: is there a better way of doing this?
return GetTemplateChild(L"swapChainPanel")
.as<Controls::SwapChainPanel>();
}
void ServoControl::CreateRenderSurface() {
if (mRenderSurface == EGL_NO_SURFACE) {
mRenderSurface = mOpenGLES.CreateSurface(Panel());
}
}
void ServoControl::DestroyRenderSurface() {
mOpenGLES.DestroySurface(mRenderSurface);
mRenderSurface = EGL_NO_SURFACE;
}
void ServoControl::RecoverFromLostDevice() {
StopRenderLoop();
DestroyRenderSurface();
mOpenGLES.Reset();
CreateRenderSurface();
StartRenderLoop();
}
void ServoControl::OnSurfaceManipulationDelta(
IInspectable const &, Input::ManipulationDeltaRoutedEventArgs const &e) {
auto x = e.Position().X;
auto y = e.Position().Y;
auto dx = e.Delta().Translation.X;
auto dy = e.Delta().Translation.Y;
RunOnGLThread([=] { mServo->Scroll(dx, dy, x, y); });
e.Handled(true);
}
void ServoControl::OnSurfaceClicked(IInspectable const &,
Input::PointerRoutedEventArgs const &e) {
auto coords = e.GetCurrentPoint(Panel());
auto x = coords.Position().X;
auto y = coords.Position().Y;
RunOnGLThread([=] { mServo->Click(x, y); });
e.Handled(true);
}
void ServoControl::GoBack() {
RunOnGLThread([=] { mServo->GoBack(); });
}
void ServoControl::GoForward() {
RunOnGLThread([=] { mServo->GoForward(); });
}
void ServoControl::Reload() {
RunOnGLThread([=] { mServo->Reload(); });
}
void ServoControl::Stop() {
RunOnGLThread([=] { mServo->Stop(); });
}
Uri ServoControl::LoadURIOrSearch(hstring input) {
auto uri = TryParseURI(input);
if (uri == std::nullopt) {
bool has_dot = wcsstr(input.c_str(), L".") != nullptr;
hstring input2 = L"https://" + input;
uri = TryParseURI(input2);
if (uri == std::nullopt || !has_dot) {
hstring input3 = L"https://duckduckgo.com/html/?q=" + Uri::EscapeComponent(input);
uri = TryParseURI(input3);
}
}
auto finalUri = uri.value();
RunOnGLThread([=] { mServo->LoadUri(finalUri.ToString()); });
return finalUri;
}
void ServoControl::RunOnGLThread(std::function<void()> task) {
EnterCriticalSection(&mGLLock);
mTasks.push_back(task);
LeaveCriticalSection(&mGLLock);
WakeConditionVariable(&mGLCondVar);
}
/**** GL THREAD LOOP ****/
void ServoControl::Loop() {
log("BrowserPage::Loop(). GL thread: %i", GetCurrentThreadId());
mOpenGLES.MakeCurrent(mRenderSurface);
EGLint panelWidth = 0;
EGLint panelHeight = 0;
mOpenGLES.GetSurfaceDimensions(mRenderSurface, &panelWidth, &panelHeight);
glViewport(0, 0, panelWidth, panelHeight);
if (mServo == nullptr) {
log("Entering loop");
ServoDelegate *sd = static_cast<ServoDelegate *>(this);
mServo = std::make_unique<Servo>(panelWidth, panelHeight, *sd);
} else {
// FIXME: this will fail since create_task didn't pick the thread
// where Servo was running initially.
throw winrt::hresult_error(E_FAIL, L"Recovering loop unimplemented");
}
mServo->SetBatchMode(true);
while (true) {
EnterCriticalSection(&mGLLock);
while (mTasks.size() == 0 && !mAnimating && mLooping) {
SleepConditionVariableCS(&mGLCondVar, &mGLLock, INFINITE);
}
if (!mLooping) {
LeaveCriticalSection(&mGLLock);
break;
}
for (auto &&task : mTasks) {
task();
}
mTasks.clear();
LeaveCriticalSection(&mGLLock);
mServo->PerformUpdates();
}
mServo->DeInit();
cancel_current_task();
}
void ServoControl::StartRenderLoop() {
if (mLooping) {
#if defined _DEBUG
throw winrt::hresult_error(E_FAIL, L"GL thread is already looping");
#else
return;
#endif
}
mLooping = true;
log("BrowserPage::StartRenderLoop(). UI thread: %i", GetCurrentThreadId());
auto task = Concurrency::create_task([=] { Loop(); });
mLoopTask = std::make_unique<Concurrency::task<void>>(task);
}
void ServoControl::StopRenderLoop() {
if (mLooping) {
EnterCriticalSection(&mGLLock);
mLooping = false;
LeaveCriticalSection(&mGLLock);
WakeConditionVariable(&mGLCondVar);
mLoopTask->wait();
mLoopTask.reset();
}
}
/**** SERVO CALLBACKS ****/
void ServoControl::OnServoLoadStarted() {
RunOnUIThread([=] { mOnLoadStartedEvent(); });
}
void ServoControl::OnServoLoadEnded() {
RunOnUIThread([=] { mOnLoadEndedEvent(); });
}
void ServoControl::OnServoHistoryChanged(bool back, bool forward) {
RunOnUIThread([=] { mOnHistoryChangedEvent(back, forward); });
}
void ServoControl::OnServoShutdownComplete() {
EnterCriticalSection(&mGLLock);
mLooping = false;
LeaveCriticalSection(&mGLLock);
}
void ServoControl::OnServoAlert(hstring message) {
// FIXME: make this sync
RunOnUIThread([=] {
Windows::UI::Popups::MessageDialog msg{message};
msg.ShowAsync();
});
}
void ServoControl::OnServoTitleChanged(hstring title) {
RunOnUIThread([=] { mOnTitleChangedEvent(*this, title); });
}
void ServoControl::OnServoURLChanged(hstring url) {
RunOnUIThread([=] { mOnURLChangedEvent(*this, url); });
}
void ServoControl::Flush() {
if (mOpenGLES.SwapBuffers(mRenderSurface) != GL_TRUE) {
// The call to eglSwapBuffers might not be successful (i.e. due to Device
// Lost) If the call fails, then we must reinitialize EGL and the GL
// resources.
RunOnUIThread([=] { RecoverFromLostDevice(); });
}
}
void ServoControl::MakeCurrent() { mOpenGLES.MakeCurrent(mRenderSurface); }
void ServoControl::WakeUp() {
RunOnGLThread([=] {});
}
bool ServoControl::OnServoAllowNavigation(hstring) { return true; }
void ServoControl::OnServoAnimatingChanged(bool animating) {
EnterCriticalSection(&mGLLock);
mAnimating = animating;
LeaveCriticalSection(&mGLLock);
WakeConditionVariable(&mGLCondVar);
}
template <typename Callable> void ServoControl::RunOnUIThread(Callable cb) {
Dispatcher().RunAsync(CoreDispatcherPriority::High, cb);
}
} // namespace winrt::ServoApp::implementation
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