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Screen.cpp
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Screen.cpp
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#include "Common/System/Display.h"
#include "Common/System/Request.h"
#include "Common/Input/InputState.h"
#include "Common/UI/Root.h"
#include "Common/UI/Screen.h"
#include "Common/UI/ScrollView.h"
#include "Common/UI/UI.h"
#include "Common/UI/View.h"
#include "Common/UI/ViewGroup.h"
#include "Common/Log.h"
#include "Common/TimeUtil.h"
#include "Core/KeyMap.h"
void Screen::focusChanged(ScreenFocusChange focusChange) {
const char *eventName = "";
switch (focusChange) {
case ScreenFocusChange::FOCUS_LOST_TOP: eventName = "FOCUS_LOST_TOP"; break;
case ScreenFocusChange::FOCUS_BECAME_TOP: eventName = "FOCUS_BECAME_TOP"; break;
}
DEBUG_LOG(SYSTEM, "Screen %s got %s", this->tag(), eventName);
}
int Screen::GetRequesterToken() {
if (token_ < 0) {
token_ = g_requestManager.GenerateRequesterToken();
}
return token_;
}
Screen::~Screen() {
screenManager_ = nullptr;
if (token_ >= 0) {
// To avoid expired callbacks getting called.
g_requestManager.ForgetRequestsWithToken(token_);
}
}
ScreenManager::~ScreenManager() {
shutdown();
}
void ScreenManager::switchScreen(Screen *screen) {
// TODO: inputLock_ ?
if (!nextStack_.empty() && screen == nextStack_.front().screen) {
ERROR_LOG(SYSTEM, "Already switching to this screen");
return;
}
// Note that if a dialog is found, this will be a silent background switch that
// will only become apparent if the dialog is closed. The previous screen will stick around
// until that switch.
// TODO: is this still true?
if (!nextStack_.empty()) {
ERROR_LOG(SYSTEM, "Already had a nextStack_! Asynchronous open while doing something? Deleting the new screen.");
delete screen;
return;
}
if (screen == nullptr) {
WARN_LOG(SYSTEM, "Switching to a zero screen, this can't be good");
}
if (stack_.empty() || screen != stack_.back().screen) {
screen->setScreenManager(this);
nextStack_.push_back({ screen, 0 });
}
}
void ScreenManager::update() {
std::lock_guard<std::recursive_mutex> guard(inputLock_);
if (!nextStack_.empty()) {
switchToNext();
}
if (overlayScreen_) {
// NOTE: This is not a full UIScreen update, to avoid double global event processing.
overlayScreen_->update();
}
// The background screen doesn't need updating.
if (stack_.size()) {
stack_.back().screen->update();
}
}
void ScreenManager::switchToNext() {
std::lock_guard<std::recursive_mutex> guard(inputLock_);
if (nextStack_.empty()) {
ERROR_LOG(SYSTEM, "switchToNext: No nextStack_!");
}
Layer temp = {nullptr, 0};
if (!stack_.empty()) {
temp = stack_.back();
temp.screen->focusChanged(ScreenFocusChange::FOCUS_LOST_TOP);
stack_.pop_back();
}
stack_.push_back(nextStack_.front());
nextStack_.front().screen->focusChanged(ScreenFocusChange::FOCUS_BECAME_TOP);
if (temp.screen) {
delete temp.screen;
}
UI::SetFocusedView(nullptr);
// When will this ever happen? Should handle focus here too?
for (size_t i = 1; i < nextStack_.size(); ++i) {
stack_.push_back(nextStack_[i]);
}
nextStack_.clear();
}
void ScreenManager::touch(const TouchInput &touch) {
std::lock_guard<std::recursive_mutex> guard(inputLock_);
// Send release all events to every screen layer.
if (touch.flags & TOUCH_RELEASE_ALL) {
for (auto &layer : stack_) {
Screen *screen = layer.screen;
layer.screen->UnsyncTouch(screen->transformTouch(touch));
}
} else if (!stack_.empty()) {
// Let the overlay know about touch-downs, to be able to dismiss popups.
bool skip = false;
if (overlayScreen_ && (touch.flags & TOUCH_DOWN)) {
skip = overlayScreen_->UnsyncTouch(overlayScreen_->transformTouch(touch));
}
if (!skip) {
Screen *screen = stack_.back().screen;
stack_.back().screen->UnsyncTouch(screen->transformTouch(touch));
}
}
}
bool ScreenManager::key(const KeyInput &key) {
std::lock_guard<std::recursive_mutex> guard(inputLock_);
bool result = false;
// Send key up to every screen layer, to avoid stuck keys.
if (key.flags & KEY_UP) {
for (auto &layer : stack_) {
result = layer.screen->UnsyncKey(key);
}
} else if (!stack_.empty()) {
result = stack_.back().screen->UnsyncKey(key);
}
return result;
}
void ScreenManager::axis(const AxisInput *axes, size_t count) {
std::lock_guard<std::recursive_mutex> guard(inputLock_);
if (!stack_.empty()) {
stack_.back().screen->UnsyncAxis(axes, count);
}
}
void ScreenManager::deviceLost() {
for (auto &iter : stack_)
iter.screen->deviceLost();
}
void ScreenManager::deviceRestored() {
for (auto &iter : stack_)
iter.screen->deviceRestored();
}
void ScreenManager::resized() {
INFO_LOG(SYSTEM, "ScreenManager::resized(dp: %dx%d)", g_display.dp_xres, g_display.dp_yres);
std::lock_guard<std::recursive_mutex> guard(inputLock_);
// Have to notify the whole stack, otherwise there will be problems when going back
// to non-top screens.
for (auto iter = stack_.begin(); iter != stack_.end(); ++iter) {
iter->screen->resized();
}
}
ScreenRenderFlags ScreenManager::render() {
ScreenRenderFlags flags = ScreenRenderFlags::NONE;
if (!stack_.empty()) {
// Collect the screens to render
TinySet<Screen *, 6> layers;
// Start at the end, collect screens to form the transparency stack.
// Then we'll iterate them in reverse order.
// Note that we skip the overlay screen, we handle it separately.
// Additionally, we pick up a "background" screen. Normally it will be either
// the EmuScreen or the actual global background screen.
auto iter = stack_.end();
Screen *coveringScreen = nullptr;
Screen *foundBackgroundScreen = nullptr;
bool first = true;
do {
--iter;
if (!foundBackgroundScreen && iter->screen->canBeBackground(first)) {
// There still might be a screen that wants to be background - generally the EmuScreen if present.
layers.push_back(iter->screen);
foundBackgroundScreen = iter->screen;
} else if (!coveringScreen) {
layers.push_back(iter->screen);
}
if (iter->flags != LAYER_TRANSPARENT) {
coveringScreen = iter->screen;
}
first = false;
} while (iter != stack_.begin());
if (backgroundScreen_ && !foundBackgroundScreen) {
layers.push_back(backgroundScreen_);
foundBackgroundScreen = backgroundScreen_;
}
// OK, now we iterate backwards over our little pile of collected screens.
for (int i = (int)layers.size() - 1; i >= 0; i--) {
ScreenRenderMode mode = ScreenRenderMode::DEFAULT;
if (i == (int)layers.size() - 1) {
// Bottom.
mode = ScreenRenderMode::FIRST;
if (i == 0) {
mode |= ScreenRenderMode::TOP;
}
} else if (i == 0) {
mode = ScreenRenderMode::TOP;
} else {
mode = ScreenRenderMode::BEHIND;
}
flags |= layers[i]->render(mode);
}
if (overlayScreen_) {
// It doesn't care about mode.
flags |= overlayScreen_->render(ScreenRenderMode::TOP);
}
getUIContext()->Flush();
if (postRenderCb_) {
// Really can't render anything after this! Will crash the screenshot mechanism if we do.
postRenderCb_(getUIContext(), postRenderUserdata_);
}
} else {
ERROR_LOG(SYSTEM, "No current screen!");
}
processFinishDialog();
return flags;
}
void ScreenManager::getFocusPosition(float &x, float &y, float &z) {
UI::ScrollView::GetLastScrollPosition(x, y);
UI::View *v = UI::GetFocusedView();
x += v ? v->GetBounds().x : 0;
y += v ? v->GetBounds().y : 0;
z = stack_.size();
}
void ScreenManager::sendMessage(UIMessage message, const char *value) {
if (message == UIMessage::RECREATE_VIEWS) {
RecreateAllViews();
} else if (message == UIMessage::LOST_FOCUS) {
TouchInput input{};
input.x = -50000.0f;
input.y = -50000.0f;
input.flags = TOUCH_RELEASE_ALL;
input.timestamp = time_now_d();
input.id = 0;
touch(input);
}
if (backgroundScreen_) {
backgroundScreen_->sendMessage(message, value);
}
if (!stack_.empty()) {
stack_.back().screen->sendMessage(message, value);
}
}
void ScreenManager::shutdown() {
std::lock_guard<std::recursive_mutex> guard(inputLock_);
for (const auto &layer : stack_)
delete layer.screen;
stack_.clear();
for (const auto &layer : nextStack_)
delete layer.screen;
nextStack_.clear();
delete overlayScreen_;
overlayScreen_ = nullptr;
delete backgroundScreen_;
backgroundScreen_ = nullptr;
}
void ScreenManager::push(Screen *screen, int layerFlags) {
std::lock_guard<std::recursive_mutex> guard(inputLock_);
screen->setScreenManager(this);
if (screen->isTransparent()) {
layerFlags |= LAYER_TRANSPARENT;
}
// Release touches and unfocus.
UI::SetFocusedView(nullptr);
TouchInput input{};
input.x = -50000.0f;
input.y = -50000.0f;
input.flags = TOUCH_RELEASE_ALL;
input.timestamp = time_now_d();
input.id = 0;
touch(input);
Layer layer = {screen, layerFlags};
if (!stack_.empty()) {
stack_.back().screen->focusChanged(ScreenFocusChange::FOCUS_LOST_TOP);
}
if (nextStack_.empty()) {
layer.screen->focusChanged(ScreenFocusChange::FOCUS_BECAME_TOP);
stack_.push_back(layer);
} else {
nextStack_.push_back(layer);
}
}
void ScreenManager::pop() {
std::lock_guard<std::recursive_mutex> guard(inputLock_);
if (!stack_.empty()) {
stack_.back().screen->focusChanged(ScreenFocusChange::FOCUS_LOST_TOP);
delete stack_.back().screen;
stack_.pop_back();
if (!stack_.empty()) {
stack_.back().screen->focusChanged(ScreenFocusChange::FOCUS_LOST_TOP);
}
} else {
ERROR_LOG(SYSTEM, "Can't pop when stack empty");
}
}
void ScreenManager::RecreateAllViews() {
std::lock_guard<std::recursive_mutex> guard(inputLock_);
for (auto it = stack_.begin(); it != stack_.end(); ++it) {
it->screen->RecreateViews();
}
}
void ScreenManager::finishDialog(Screen *dialog, DialogResult result) {
if (stack_.empty()) {
ERROR_LOG(SYSTEM, "Must be in a dialog to finishDialog");
return;
}
if (dialog != stack_.back().screen) {
ERROR_LOG(SYSTEM, "Wrong dialog being finished!");
return;
}
dialog->onFinish(result);
dialogFinished_ = dialog;
dialogResult_ = result;
}
Screen *ScreenManager::dialogParent(const Screen *dialog) const {
for (size_t i = 1; i < stack_.size(); ++i) {
if (stack_[i].screen == dialog) {
// The previous screen was the caller (not necessarily the topmost.)
return stack_[i - 1].screen;
}
}
return nullptr;
}
void ScreenManager::processFinishDialog() {
if (dialogFinished_) {
{
std::lock_guard<std::recursive_mutex> guard(inputLock_);
// Another dialog may have been pushed before the render, so search for it.
Screen *caller = dialogParent(dialogFinished_);
bool erased = false;
for (size_t i = 0; i < stack_.size(); ++i) {
if (stack_[i].screen == dialogFinished_) {
stack_[i].screen->focusChanged(ScreenFocusChange::FOCUS_LOST_TOP);
stack_.erase(stack_.begin() + i);
erased = true;
}
}
if (erased && !stack_.empty()) {
stack_.back().screen->focusChanged(ScreenFocusChange::FOCUS_BECAME_TOP);
}
if (!caller) {
ERROR_LOG(SYSTEM, "ERROR: no top screen when finishing dialog");
} else if (caller != topScreen()) {
// The caller may get confused if we call dialogFinished() now.
WARN_LOG(SYSTEM, "Skipping non-top dialog when finishing dialog.");
} else {
caller->dialogFinished(dialogFinished_, dialogResult_);
}
}
delete dialogFinished_;
dialogFinished_ = nullptr;
}
}
void ScreenManager::SetBackgroundOverlayScreens(Screen *backgroundScreen, Screen *overlayScreen) {
if (backgroundScreen_) {
delete backgroundScreen_;
}
backgroundScreen_ = backgroundScreen;
backgroundScreen_->setScreenManager(this);
if (overlayScreen_) {
delete overlayScreen_;
}
overlayScreen_ = overlayScreen;
overlayScreen_->setScreenManager(this);
}