ppsspp/Common/UI/UIScreen.cpp

#include <algorithm>
#include <map>
#include <sstream>

#include "Common/System/Display.h"
#include "Common/Input/InputState.h"
#include "Common/Input/KeyCodes.h"
#include "Common/Math/curves.h"
#include "Common/UI/UIScreen.h"
#include "Common/UI/Context.h"
#include "Common/UI/Screen.h"
#include "Common/UI/Root.h"
#include "Common/Data/Text/I18n.h"
#include "Common/Render/DrawBuffer.h"
#include "Common/VR/PPSSPPVR.h"

#include "Common/Log.h"
#include "Common/StringUtils.h"

static const bool ClickDebug = false;

UIScreen::UIScreen()
	: Screen() {
}

UIScreen::~UIScreen() {
	delete root_;
}

void UIScreen::DoRecreateViews() {
	if (recreateViews_) {
		std::lock_guard<std::recursive_mutex> guard(screenManager()->inputLock_);

		UI::PersistMap persisted;
		bool persisting = root_ != nullptr;
		if (persisting) {
			root_->PersistData(UI::PERSIST_SAVE, "root", persisted);
		}

		delete root_;
		root_ = nullptr;
		CreateViews();
		UI::View *defaultView = root_ ? root_->GetDefaultFocusView() : nullptr;
		if (defaultView && defaultView->GetVisibility() == UI::V_VISIBLE) {
			defaultView->SetFocus();
		}
		recreateViews_ = false;

		if (persisting && root_ != nullptr) {
			root_->PersistData(UI::PERSIST_RESTORE, "root", persisted);

			// Update layout and refocus so things scroll into view.
			// This is for resizing down, when focused on something now offscreen.
			UI::LayoutViewHierarchy(*screenManager()->getUIContext(), root_, ignoreInsets_);
			UI::View *focused = UI::GetFocusedView();
			if (focused) {
				root_->SubviewFocused(focused);
			}
		}
	}
}

void UIScreen::update() {
	DoRecreateViews();

	if (root_) {
		UpdateViewHierarchy(root_);
	}
}

void UIScreen::deviceLost() {
	if (root_)
		root_->DeviceLost();
}

void UIScreen::deviceRestored() {
	if (root_)
		root_->DeviceRestored(screenManager()->getDrawContext());
}

void UIScreen::preRender() {
	using namespace Draw;
	Draw::DrawContext *draw = screenManager()->getDrawContext();
	if (!draw) {
		return;
	}
	draw->BeginFrame();
	// Bind and clear the back buffer
	draw->BindFramebufferAsRenderTarget(nullptr, { RPAction::CLEAR, RPAction::CLEAR, RPAction::CLEAR, 0xFF000000 }, "UI");
	screenManager()->getUIContext()->BeginFrame();

	if (IsVRBuild()) {
		BindVRFramebuffer();
	}

	Draw::Viewport viewport;
	viewport.TopLeftX = 0;
	viewport.TopLeftY = 0;
	viewport.Width = pixel_xres;
	viewport.Height = pixel_yres;
	viewport.MaxDepth = 1.0;
	viewport.MinDepth = 0.0;
	draw->SetViewports(1, &viewport);
	draw->SetTargetSize(pixel_xres, pixel_yres);
}

void UIScreen::postRender() {
	Draw::DrawContext *draw = screenManager()->getDrawContext();
	if (!draw) {
		return;
	}
	draw->EndFrame();
}

void UIScreen::render() {
	DoRecreateViews();

	if (root_) {
		UIContext *uiContext = screenManager()->getUIContext();
		UI::LayoutViewHierarchy(*uiContext, root_, ignoreInsets_);

		uiContext->PushTransform({translation_, scale_, alpha_});

		uiContext->Begin();
		DrawBackground(*uiContext);
		root_->Draw(*uiContext);
		uiContext->Flush();

		uiContext->PopTransform();
	}
}

TouchInput UIScreen::transformTouch(const TouchInput &touch) {
	TouchInput updated = touch;

	float x = touch.x - translation_.x;
	float y = touch.y - translation_.y;
	// Scale around the center as the origin.
	updated.x = (x - dp_xres * 0.5f) / scale_.x + dp_xres * 0.5f;
	updated.y = (y - dp_yres * 0.5f) / scale_.y + dp_yres * 0.5f;

	return updated;
}

bool UIScreen::touch(const TouchInput &touch) {
	if (root_) {
		if (ClickDebug && (touch.flags & TOUCH_DOWN)) {
			INFO_LOG(SYSTEM, "Touch down!");
			std::vector<UI::View *> views;
			root_->Query(touch.x, touch.y, views);
			for (auto view : views) {
				INFO_LOG(SYSTEM, "%s", view->DescribeLog().c_str());
			}
		}

		UI::TouchEvent(touch, root_);
		return true;
	}
	return false;
}

bool UIScreen::key(const KeyInput &key) {
	if (root_) {
		return UI::KeyEvent(key, root_);
	}
	return false;
}

void UIScreen::TriggerFinish(DialogResult result) {
	screenManager()->finishDialog(this, result);
}

bool UIDialogScreen::key(const KeyInput &key) {
	bool retval = UIScreen::key(key);
	if (!retval && (key.flags & KEY_DOWN) && UI::IsEscapeKey(key)) {
		if (finished_) {
			ERROR_LOG(SYSTEM, "Screen already finished");
		} else {
			finished_ = true;
			TriggerFinish(DR_BACK);
			UI::PlayUISound(UI::UISound::BACK);
		}
		return true;
	}
	return retval;
}

void UIDialogScreen::sendMessage(const char *msg, const char *value) {
	Screen *screen = screenManager()->dialogParent(this);
	if (screen) {
		screen->sendMessage(msg, value);
	}
}

bool UIScreen::axis(const AxisInput &axis) {
	if (root_) {
		UI::AxisEvent(axis, root_);
		return true;
	}
	return false;
}

UI::EventReturn UIScreen::OnBack(UI::EventParams &e) {
	TriggerFinish(DR_BACK);
	return UI::EVENT_DONE;
}

UI::EventReturn UIScreen::OnOK(UI::EventParams &e) {
	TriggerFinish(DR_OK);
	return UI::EVENT_DONE;
}

UI::EventReturn UIScreen::OnCancel(UI::EventParams &e) {
	TriggerFinish(DR_CANCEL);
	return UI::EVENT_DONE;
}

PopupScreen::PopupScreen(std::string title, std::string button1, std::string button2)
	: box_(0), defaultButton_(nullptr), title_(title) {
	auto di = GetI18NCategory("Dialog");
	if (!button1.empty())
		button1_ = di->T(button1.c_str());
	if (!button2.empty())
		button2_ = di->T(button2.c_str());

	alpha_ = 0.0f;
}

bool PopupScreen::touch(const TouchInput &touch) {
	if (!box_ || (touch.flags & TOUCH_DOWN) == 0) {
		return UIDialogScreen::touch(touch);
	}

	if (!box_->GetBounds().Contains(touch.x, touch.y)) {
		TriggerFinish(DR_BACK);
	}

	return UIDialogScreen::touch(touch);
}

bool PopupScreen::key(const KeyInput &key) {
	if (key.flags & KEY_DOWN) {
		if ((key.keyCode == NKCODE_ENTER || key.keyCode == NKCODE_NUMPAD_ENTER) && defaultButton_) {
			UI::EventParams e{};
			defaultButton_->OnClick.Trigger(e);
			return true;
		}
	}

	return UIDialogScreen::key(key);
}

void PopupScreen::update() {
	UIDialogScreen::update();

	if (defaultButton_)
		defaultButton_->SetEnabled(CanComplete(DR_OK));

	float animatePos = 1.0f;

	++frames_;
	if (finishFrame_ >= 0) {
		float leadOut = bezierEaseInOut((frames_ - finishFrame_) * (1.0f / (float)FRAMES_LEAD_OUT));
		animatePos = 1.0f - leadOut;

		if (frames_ >= finishFrame_ + FRAMES_LEAD_OUT) {
			// Actual finish happens here.
			screenManager()->finishDialog(this, finishResult_);
		}
	} else if (frames_ < FRAMES_LEAD_IN) {
		float leadIn = bezierEaseInOut(frames_ * (1.0f / (float)FRAMES_LEAD_IN));
		animatePos = leadIn;
	}

	if (animatePos < 1.0f) {
		alpha_ = animatePos;
		scale_.x = 0.9f + animatePos * 0.1f;
		scale_.y =  0.9f + animatePos * 0.1f;

		if (hasPopupOrigin_) {
			float xoff = popupOrigin_.x - dp_xres / 2;
			float yoff = popupOrigin_.y - dp_yres / 2;

			// Pull toward the origin a bit.
			translation_.x = xoff * (1.0f - animatePos) * 0.2f;
			translation_.y = yoff * (1.0f - animatePos) * 0.2f;
		} else {
			translation_.y = -dp_yres * (1.0f - animatePos) * 0.2f;
		}
	} else {
		alpha_ = 1.0f;
		scale_.x = 1.0f;
		scale_.y = 1.0f;
		translation_.x = 0.0f;
		translation_.y = 0.0f;
	}
}

void PopupScreen::SetPopupOrigin(const UI::View *view) {
	hasPopupOrigin_ = true;
	popupOrigin_ = view->GetBounds().Center();
}

void PopupScreen::SetPopupOffset(float y) {
	offsetY_ = y;
}

void PopupScreen::TriggerFinish(DialogResult result) {
	if (CanComplete(result)) {
		finishFrame_ = frames_;
		finishResult_ = result;

		OnCompleted(result);
	}
}

void PopupScreen::resized() {
	RecreateViews();
}

void PopupScreen::CreateViews() {
	using namespace UI;
	UIContext &dc = *screenManager()->getUIContext();

	AnchorLayout *anchor = new AnchorLayout(new LayoutParams(FILL_PARENT, FILL_PARENT));
	anchor->Overflow(false);
	root_ = anchor;

	float yres = screenManager()->getUIContext()->GetBounds().h;

	box_ = new LinearLayout(ORIENT_VERTICAL,
		new AnchorLayoutParams(PopupWidth(), FillVertical() ? yres - 30 : WRAP_CONTENT, dc.GetBounds().centerX(), dc.GetBounds().centerY() + offsetY_, NONE, NONE, true));

	root_->Add(box_);
	box_->SetBG(dc.theme->popupStyle.background);
	box_->SetHasDropShadow(hasDropShadow_);
	// Since we scale a bit, make the dropshadow bleed past the edges.
	box_->SetDropShadowExpand(std::max(dp_xres, dp_yres));

	View *title = new PopupHeader(title_);
	box_->Add(title);

	CreatePopupContents(box_);
	root_->SetDefaultFocusView(box_);

	if (ShowButtons() && !button1_.empty()) {
		// And the two buttons at the bottom.
		LinearLayout *buttonRow = new LinearLayout(ORIENT_HORIZONTAL, new LinearLayoutParams(200, WRAP_CONTENT));
		buttonRow->SetSpacing(0);
		Margins buttonMargins(5, 5);

		// Adjust button order to the platform default.
#if defined(_WIN32)
		defaultButton_ = buttonRow->Add(new Button(button1_, new LinearLayoutParams(1.0f, buttonMargins)));
		defaultButton_->OnClick.Handle<UIScreen>(this, &UIScreen::OnOK);
		if (!button2_.empty())
			buttonRow->Add(new Button(button2_, new LinearLayoutParams(1.0f, buttonMargins)))->OnClick.Handle<UIScreen>(this, &UIScreen::OnCancel);
#else
		if (!button2_.empty())
			buttonRow->Add(new Button(button2_, new LinearLayoutParams(1.0f)))->OnClick.Handle<UIScreen>(this, &UIScreen::OnCancel);
		defaultButton_ = buttonRow->Add(new Button(button1_, new LinearLayoutParams(1.0f)));
		defaultButton_->OnClick.Handle<UIScreen>(this, &UIScreen::OnOK);
#endif

		box_->Add(buttonRow);
	}
}

void MessagePopupScreen::CreatePopupContents(UI::ViewGroup *parent) {
	using namespace UI;
	UIContext &dc = *screenManager()->getUIContext();

	std::vector<std::string> messageLines;
	SplitString(message_, '\n', messageLines);
	for (const auto& lineOfText : messageLines)
		parent->Add(new UI::TextView(lineOfText, ALIGN_LEFT | ALIGN_VCENTER, false))->SetTextColor(dc.theme->popupStyle.fgColor);
}

void MessagePopupScreen::OnCompleted(DialogResult result) {
	if (result == DR_OK) {
		if (callback_)
			callback_(true);
	} else {
		if (callback_)
			callback_(false);
	}
}

void ListPopupScreen::CreatePopupContents(UI::ViewGroup *parent) {
	using namespace UI;

	listView_ = parent->Add(new ListView(&adaptor_, hidden_)); //, new LinearLayoutParams(1.0)));
	listView_->SetMaxHeight(screenManager()->getUIContext()->GetBounds().h - 140);
	listView_->OnChoice.Handle(this, &ListPopupScreen::OnListChoice);
}

UI::EventReturn ListPopupScreen::OnListChoice(UI::EventParams &e) {
	adaptor_.SetSelected(e.a);
	if (callback_)
		callback_(adaptor_.GetSelected());
	TriggerFinish(DR_OK);
	OnChoice.Dispatch(e);
	return UI::EVENT_DONE;
}

namespace UI {

std::string ChopTitle(const std::string &title) {
	size_t pos = title.find('\n');
	if (pos != title.npos) {
		return title.substr(0, pos);
	}
	return title;
}

UI::EventReturn PopupMultiChoice::HandleClick(UI::EventParams &e) {
	restoreFocus_ = HasFocus();

	auto category = category_ ? GetI18NCategory(category_) : nullptr;

	std::vector<std::string> choices;
	for (int i = 0; i < numChoices_; i++) {
		choices.push_back(category ? category->T(choices_[i]) : choices_[i]);
	}

	ListPopupScreen *popupScreen = new ListPopupScreen(ChopTitle(text_), choices, *value_ - minVal_,
		std::bind(&PopupMultiChoice::ChoiceCallback, this, std::placeholders::_1));
	popupScreen->SetHiddenChoices(hidden_);
	if (e.v)
		popupScreen->SetPopupOrigin(e.v);
	screenManager_->push(popupScreen);
	return UI::EVENT_DONE;
}

void PopupMultiChoice::Update() {
	UpdateText();
}

void PopupMultiChoice::UpdateText() {
	if (!choices_)
		return;
	auto category = GetI18NCategory(category_);
	// Clamp the value to be safe.
	if (*value_ < minVal_ || *value_ > minVal_ + numChoices_ - 1) {
		valueText_ = "(invalid choice)";  // Shouldn't happen. Should be no need to translate this.
	} else {
		valueText_ = category ? category->T(choices_[*value_ - minVal_]) : choices_[*value_ - minVal_];
	}
}

void PopupMultiChoice::ChoiceCallback(int num) {
	if (num != -1) {
		*value_ = num + minVal_;
		UpdateText();

		UI::EventParams e{};
		e.v = this;
		e.a = num;
		OnChoice.Trigger(e);

		if (restoreFocus_) {
			SetFocusedView(this);
		}
		PostChoiceCallback(num);
	}
}

std::string PopupMultiChoice::ValueText() const {
	return valueText_;
}

PopupSliderChoice::PopupSliderChoice(int *value, int minValue, int maxValue, const std::string &text, ScreenManager *screenManager, const std::string &units, LayoutParams *layoutParams)
	: AbstractChoiceWithValueDisplay(text, layoutParams), value_(value), minValue_(minValue), maxValue_(maxValue), step_(1), units_(units), screenManager_(screenManager) {
	fmt_ = "%i";
	OnClick.Handle(this, &PopupSliderChoice::HandleClick);
}

PopupSliderChoice::PopupSliderChoice(int *value, int minValue, int maxValue, const std::string &text, int step, ScreenManager *screenManager, const std::string &units, LayoutParams *layoutParams)
	: AbstractChoiceWithValueDisplay(text, layoutParams), value_(value), minValue_(minValue), maxValue_(maxValue), step_(step), units_(units), screenManager_(screenManager) {
	fmt_ = "%i";
	OnClick.Handle(this, &PopupSliderChoice::HandleClick);
}

PopupSliderChoiceFloat::PopupSliderChoiceFloat(float *value, float minValue, float maxValue, const std::string &text, ScreenManager *screenManager, const std::string &units, LayoutParams *layoutParams)
	: AbstractChoiceWithValueDisplay(text, layoutParams), value_(value), minValue_(minValue), maxValue_(maxValue), step_(1.0f), units_(units), screenManager_(screenManager) {
	fmt_ = "%2.2f";
	OnClick.Handle(this, &PopupSliderChoiceFloat::HandleClick);
}

PopupSliderChoiceFloat::PopupSliderChoiceFloat(float *value, float minValue, float maxValue, const std::string &text, float step, ScreenManager *screenManager, const std::string &units, LayoutParams *layoutParams)
	: AbstractChoiceWithValueDisplay(text, layoutParams), value_(value), minValue_(minValue), maxValue_(maxValue), step_(step), units_(units), screenManager_(screenManager) {
	fmt_ = "%2.2f";
	OnClick.Handle(this, &PopupSliderChoiceFloat::HandleClick);
}

EventReturn PopupSliderChoice::HandleClick(EventParams &e) {
	restoreFocus_ = HasFocus();

	SliderPopupScreen *popupScreen = new SliderPopupScreen(value_, minValue_, maxValue_, ChopTitle(text_), step_, units_);
	if (!negativeLabel_.empty())
		popupScreen->SetNegativeDisable(negativeLabel_);
	popupScreen->OnChange.Handle(this, &PopupSliderChoice::HandleChange);
	if (e.v)
		popupScreen->SetPopupOrigin(e.v);
	screenManager_->push(popupScreen);
	return EVENT_DONE;
}

EventReturn PopupSliderChoice::HandleChange(EventParams &e) {
	e.v = this;
	OnChange.Trigger(e);

	if (restoreFocus_) {
		SetFocusedView(this);
	}
	return EVENT_DONE;
}

std::string PopupSliderChoice::ValueText() const {
	// Always good to have space for Unicode.
	char temp[256];
	if (zeroLabel_.size() && *value_ == 0) {
		strcpy(temp, zeroLabel_.c_str());
	} else if (negativeLabel_.size() && *value_ < 0) {
		strcpy(temp, negativeLabel_.c_str());
	} else {
		sprintf(temp, fmt_, *value_);
	}

	return temp;
}

EventReturn PopupSliderChoiceFloat::HandleClick(EventParams &e) {
	restoreFocus_ = HasFocus();

	SliderFloatPopupScreen *popupScreen = new SliderFloatPopupScreen(value_, minValue_, maxValue_, ChopTitle(text_), step_, units_, liveUpdate_);
	popupScreen->OnChange.Handle(this, &PopupSliderChoiceFloat::HandleChange);
	popupScreen->SetHasDropShadow(hasDropShadow_);
	if (e.v)
		popupScreen->SetPopupOrigin(e.v);
	screenManager_->push(popupScreen);
	return EVENT_DONE;
}

EventReturn PopupSliderChoiceFloat::HandleChange(EventParams &e) {
	e.v = this;
	OnChange.Trigger(e);

	if (restoreFocus_) {
		SetFocusedView(this);
	}
	return EVENT_DONE;
}

std::string PopupSliderChoiceFloat::ValueText() const {
	char temp[256];
	if (zeroLabel_.size() && *value_ == 0.0f) {
		strcpy(temp, zeroLabel_.c_str());
	} else {
		sprintf(temp, fmt_, *value_);
	}

	return temp;
}

EventReturn SliderPopupScreen::OnDecrease(EventParams &params) {
	if (sliderValue_ > minValue_ && sliderValue_ < maxValue_) {
		sliderValue_ = step_ * floor((sliderValue_ / step_) + 0.5f);
	}
	sliderValue_ -= step_;
	slider_->Clamp();
	changing_ = true;
	char temp[64];
	sprintf(temp, "%d", sliderValue_);
	edit_->SetText(temp);
	changing_ = false;
	disabled_ = false;
	return EVENT_DONE;
}

EventReturn SliderPopupScreen::OnIncrease(EventParams &params) {
	if (sliderValue_ > minValue_ && sliderValue_ < maxValue_) {
		sliderValue_ = step_ * floor((sliderValue_ / step_) + 0.5f);
	}
	sliderValue_ += step_;
	slider_->Clamp();
	changing_ = true;
	char temp[64];
	sprintf(temp, "%d", sliderValue_);
	edit_->SetText(temp);
	changing_ = false;
	disabled_ = false;
	return EVENT_DONE;
}

EventReturn SliderPopupScreen::OnSliderChange(EventParams &params) {
	changing_ = true;
	char temp[64];
	sprintf(temp, "%d", sliderValue_);
	edit_->SetText(temp);
	changing_ = false;
	disabled_ = false;
	return EVENT_DONE;
}

EventReturn SliderPopupScreen::OnTextChange(EventParams &params) {
	if (!changing_) {
		sliderValue_ = atoi(edit_->GetText().c_str());
		disabled_ = false;
		slider_->Clamp();
	}
	return EVENT_DONE;
}

void SliderPopupScreen::CreatePopupContents(UI::ViewGroup *parent) {
	using namespace UI;
	UIContext &dc = *screenManager()->getUIContext();

	sliderValue_ = *value_;
	if (disabled_ && sliderValue_ < 0)
		sliderValue_ = 0;
	LinearLayout *vert = parent->Add(new LinearLayout(ORIENT_VERTICAL, new LinearLayoutParams(UI::Margins(10, 10))));
	slider_ = new Slider(&sliderValue_, minValue_, maxValue_, new LinearLayoutParams(UI::Margins(10, 10)));
	slider_->OnChange.Handle(this, &SliderPopupScreen::OnSliderChange);
	vert->Add(slider_);

	LinearLayout *lin = vert->Add(new LinearLayout(ORIENT_HORIZONTAL, new LinearLayoutParams(UI::Margins(10, 10))));
	lin->Add(new Button(" - "))->OnClick.Handle(this, &SliderPopupScreen::OnDecrease);
	lin->Add(new Button(" + "))->OnClick.Handle(this, &SliderPopupScreen::OnIncrease);

	char temp[64];
	sprintf(temp, "%d", sliderValue_);
	edit_ = new TextEdit(temp, Title(), "", new LinearLayoutParams(10.0f));
	edit_->SetMaxLen(16);
	edit_->SetTextColor(dc.theme->popupStyle.fgColor);
	edit_->SetTextAlign(FLAG_DYNAMIC_ASCII);
	edit_->OnTextChange.Handle(this, &SliderPopupScreen::OnTextChange);
	changing_ = false;
	lin->Add(edit_);

	if (!units_.empty())
		lin->Add(new TextView(units_, new LinearLayoutParams(10.0f)))->SetTextColor(dc.theme->popupStyle.fgColor);

	if (!negativeLabel_.empty())
		vert->Add(new CheckBox(&disabled_, negativeLabel_));

	if (IsFocusMovementEnabled())
		UI::SetFocusedView(slider_);
}

void SliderFloatPopupScreen::CreatePopupContents(UI::ViewGroup *parent) {
	using namespace UI;
	UIContext &dc = *screenManager()->getUIContext();

	sliderValue_ = *value_;
	LinearLayout *vert = parent->Add(new LinearLayout(ORIENT_VERTICAL, new LinearLayoutParams(UI::Margins(10, 10))));
	slider_ = new SliderFloat(&sliderValue_, minValue_, maxValue_, new LinearLayoutParams(UI::Margins(10, 10)));
	slider_->OnChange.Handle(this, &SliderFloatPopupScreen::OnSliderChange);
	vert->Add(slider_);

	LinearLayout *lin = vert->Add(new LinearLayout(ORIENT_HORIZONTAL, new LinearLayoutParams(UI::Margins(10, 10))));
	lin->Add(new Button(" - "))->OnClick.Handle(this, &SliderFloatPopupScreen::OnDecrease);
	lin->Add(new Button(" + "))->OnClick.Handle(this, &SliderFloatPopupScreen::OnIncrease);

	char temp[64];
	sprintf(temp, "%0.3f", sliderValue_);
	edit_ = new TextEdit(temp, Title(), "", new LinearLayoutParams(10.0f));
	edit_->SetMaxLen(16);
	edit_->SetTextColor(dc.theme->popupStyle.fgColor);
	edit_->SetTextAlign(FLAG_DYNAMIC_ASCII);
	edit_->OnTextChange.Handle(this, &SliderFloatPopupScreen::OnTextChange);
	changing_ = false;
	lin->Add(edit_);
	if (!units_.empty())
		lin->Add(new TextView(units_, new LinearLayoutParams(10.0f)))->SetTextColor(dc.theme->popupStyle.fgColor);

	// slider_ = parent->Add(new SliderFloat(&sliderValue_, minValue_, maxValue_, new LinearLayoutParams(UI::Margins(10, 5))));
	if (IsFocusMovementEnabled())
		UI::SetFocusedView(slider_);
}

EventReturn SliderFloatPopupScreen::OnDecrease(EventParams &params) {
	if (sliderValue_ > minValue_ && sliderValue_ < maxValue_) {
		sliderValue_ = step_ * floor((sliderValue_ / step_) + 0.5f);
	}
	sliderValue_ -= step_;
	slider_->Clamp();
	changing_ = true;
	char temp[64];
	sprintf(temp, "%0.3f", sliderValue_);
	edit_->SetText(temp);
	changing_ = false;
	if (liveUpdate_) {
		*value_ = sliderValue_;
	}
	return EVENT_DONE;
}

EventReturn SliderFloatPopupScreen::OnIncrease(EventParams &params) {
	if (sliderValue_ > minValue_ && sliderValue_ < maxValue_) {
		sliderValue_ = step_ * floor((sliderValue_ / step_) + 0.5f);
	}
	sliderValue_ += step_;
	slider_->Clamp();
	changing_ = true;
	char temp[64];
	sprintf(temp, "%0.3f", sliderValue_);
	edit_->SetText(temp);
	changing_ = false;
	if (liveUpdate_) {
		*value_ = sliderValue_;
	}
	return EVENT_DONE;
}

EventReturn SliderFloatPopupScreen::OnSliderChange(EventParams &params) {
	changing_ = true;
	char temp[64];
	sprintf(temp, "%0.3f", sliderValue_);
	edit_->SetText(temp);
	changing_ = false;
	if (liveUpdate_) {
		*value_ = sliderValue_;
	}
	return EVENT_DONE;
}

EventReturn SliderFloatPopupScreen::OnTextChange(EventParams &params) {
	if (!changing_) {
		sliderValue_ = atof(edit_->GetText().c_str());
		slider_->Clamp();
		if (liveUpdate_) {
			*value_ = sliderValue_;
		}
	}
	return EVENT_DONE;
}

void SliderPopupScreen::OnCompleted(DialogResult result) {
	if (result == DR_OK) {
		*value_ = disabled_ ? -1 : sliderValue_;
		EventParams e{};
		e.v = nullptr;
		e.a = *value_;
		OnChange.Trigger(e);
	}
}

void SliderFloatPopupScreen::OnCompleted(DialogResult result) {
	if (result == DR_OK) {
		*value_ = sliderValue_;
		EventParams e{};
		e.v = nullptr;
		e.a = (int)*value_;
		e.f = *value_;
		OnChange.Trigger(e);
	} else {
		*value_ = originalValue_;
	}
}

PopupTextInputChoice::PopupTextInputChoice(std::string *value, const std::string &title, const std::string &placeholder, int maxLen, ScreenManager *screenManager, LayoutParams *layoutParams)
: AbstractChoiceWithValueDisplay(title, layoutParams), screenManager_(screenManager), value_(value), placeHolder_(placeholder), maxLen_(maxLen) {
	OnClick.Handle(this, &PopupTextInputChoice::HandleClick);
}

EventReturn PopupTextInputChoice::HandleClick(EventParams &e) {
	restoreFocus_ = HasFocus();

	TextEditPopupScreen *popupScreen = new TextEditPopupScreen(value_, placeHolder_, ChopTitle(text_), maxLen_);
	popupScreen->OnChange.Handle(this, &PopupTextInputChoice::HandleChange);
	if (e.v)
		popupScreen->SetPopupOrigin(e.v);
	screenManager_->push(popupScreen);
	return EVENT_DONE;
}

std::string PopupTextInputChoice::ValueText() const {
	return *value_;
}

EventReturn PopupTextInputChoice::HandleChange(EventParams &e) {
	e.v = this;
	OnChange.Trigger(e);

	if (restoreFocus_) {
		SetFocusedView(this);
	}
	return EVENT_DONE;
}

void TextEditPopupScreen::CreatePopupContents(UI::ViewGroup *parent) {
	using namespace UI;
	UIContext &dc = *screenManager()->getUIContext();

	textEditValue_ = *value_;
	LinearLayout *lin = parent->Add(new LinearLayout(ORIENT_HORIZONTAL, new LinearLayoutParams((UI::Size)300, WRAP_CONTENT)));
	edit_ = new TextEdit(textEditValue_, Title(), placeholder_, new LinearLayoutParams(1.0f));
	edit_->SetMaxLen(maxLen_);
	edit_->SetTextColor(dc.theme->popupStyle.fgColor);
	lin->Add(edit_);

	UI::SetFocusedView(edit_);
}

void TextEditPopupScreen::OnCompleted(DialogResult result) {
	if (result == DR_OK) {
		*value_ = StripSpaces(edit_->GetText());
		EventParams e{};
		e.v = edit_;
		OnChange.Trigger(e);
	}
}

void AbstractChoiceWithValueDisplay::GetContentDimensionsBySpec(const UIContext &dc, MeasureSpec horiz, MeasureSpec vert, float &w, float &h) const {
	const std::string valueText = ValueText();
	int paddingX = 12;
	// Assume we want at least 20% of the size for the label, at a minimum.
	float availWidth = (horiz.size - paddingX * 2) * 0.8f;
	if (availWidth < 0) {
		availWidth = 65535.0f;
	}
	float scale = CalculateValueScale(dc, valueText, availWidth);
	Bounds availBounds(0, 0, availWidth, vert.size);

	float valueW, valueH;
	dc.MeasureTextRect(dc.theme->uiFont, scale, scale, valueText.c_str(), (int)valueText.size(), availBounds, &valueW, &valueH, ALIGN_RIGHT | ALIGN_VCENTER | FLAG_WRAP_TEXT);
	valueW += paddingX;

	// Give the choice itself less space to grow in, so it shrinks if needed.
	MeasureSpec horizLabel = horiz;
	horizLabel.size -= valueW;
	Choice::GetContentDimensionsBySpec(dc, horiz, vert, w, h);

	w += valueW;
	h = std::max(h, valueH);
}

void AbstractChoiceWithValueDisplay::Draw(UIContext &dc) {
	Style style = dc.theme->itemStyle;
	if (!IsEnabled()) {
		style = dc.theme->itemDisabledStyle;
	}
	if (HasFocus()) {
		style = dc.theme->itemFocusedStyle;
	}
	if (down_) {
		style = dc.theme->itemDownStyle;
	}
	int paddingX = 12;
	dc.SetFontStyle(dc.theme->uiFont);

	const std::string valueText = ValueText();
	// Assume we want at least 20% of the size for the label, at a minimum.
	float availWidth = (bounds_.w - paddingX * 2) * 0.8f;
	float scale = CalculateValueScale(dc, valueText, availWidth);

	float w, h;
	Bounds availBounds(0, 0, availWidth, bounds_.h);
	dc.MeasureTextRect(dc.theme->uiFont, scale, scale, valueText.c_str(), (int)valueText.size(), availBounds, &w, &h, ALIGN_RIGHT | ALIGN_VCENTER | FLAG_WRAP_TEXT);
	textPadding_.right = w + paddingX;

	Choice::Draw(dc);
	dc.SetFontScale(scale, scale);
	Bounds valueBounds(bounds_.x2() - textPadding_.right, bounds_.y, w, bounds_.h);
	dc.DrawTextRect(valueText.c_str(), valueBounds, style.fgColor, ALIGN_RIGHT | ALIGN_VCENTER | FLAG_WRAP_TEXT);
	dc.SetFontScale(1.0f, 1.0f);
}

float AbstractChoiceWithValueDisplay::CalculateValueScale(const UIContext &dc, const std::string &valueText, float availWidth) const {
	float actualWidth, actualHeight;
	Bounds availBounds(0, 0, availWidth, bounds_.h);
	dc.MeasureTextRect(dc.theme->uiFont, 1.0f, 1.0f, valueText.c_str(), (int)valueText.size(), availBounds, &actualWidth, &actualHeight);
	if (actualWidth > availWidth) {
		return std::max(0.8f, availWidth / actualWidth);
	}
	return 1.0f;
}

std::string ChoiceWithValueDisplay::ValueText() const {
	auto category = GetI18NCategory(category_);
	std::ostringstream valueText;
	if (translateCallback_ && sValue_) {
		valueText << translateCallback_(sValue_->c_str());
	} else if (sValue_ != nullptr) {
		if (category)
			valueText << category->T(*sValue_);
		else
			valueText << *sValue_;
	} else if (iValue_ != nullptr) {
		valueText << *iValue_;
	}

	return valueText.str();
}

}  // namespace UI