JoltPhysics/TestFramework/Application/DebugUI.cpp

// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
// SPDX-License-Identifier: MIT

#include <TestFramework.h>

#include <Application/DebugUI.h>
#include <Renderer/Texture.h>
#include <UI/UIManager.h>
#include <UI/UIImage.h>
#include <UI/UIStaticText.h>
#include <UI/UICheckBox.h>
#include <UI/UIHorizontalStack.h>
#include <UI/UIVerticalStack.h>
#include <UI/UITextButton.h>
#include <Image/LoadTGA.h>
#include <Utils/Log.h>

JPH_SUPPRESS_WARNINGS_STD_BEGIN
#include <fstream>
JPH_SUPPRESS_WARNINGS_STD_END

DebugUI::DebugUI(UIManager *inUIManager, const Font *inFont) :
	mUI(inUIManager),
	mFont(inFont)
{
	// Load UI texture with commonly used UI elements
	ifstream texture_stream;
	texture_stream.open("Assets/UI.tga", ifstream::binary);
	if (texture_stream.fail())
		FatalError("Failed to open UI.tga");
	Ref<Surface> texture_surface = LoadTGA(texture_stream);
	if (texture_surface == nullptr)
		FatalError("Failed to load UI.tga");
	mUITexture = mUI->GetRenderer()->CreateTexture(texture_surface);

	// Install callback that pops a layer when the deactivate animation finishes
	mUI->SetDeactivatedAction([this]() {
		mUI->PopLayer();
	});

	// Don't want to draw any layers that are not active
	mUI->SetDrawInactiveLayers(false);
}

UIElement *DebugUI::CreateMenu()
{
	mUI->PushLayer();

	UIImage *background = new UIImage();
	background->SetRelativeX(10);
	background->SetRelativeY(10);
	background->SetImage(UITexturedQuad(mUITexture, 0, 0, 33, 30, 4, 4, 24, 21));
	mUI->Add(background);

	UIVerticalStack *stack = new UIVerticalStack();
	stack->SetRelativeX(10);
	stack->SetRelativeY(10);
	stack->SetPaddingRight(10);
	stack->SetPaddingBottom(10);
	background->Add(stack);

	return stack;
}

UIStaticText *DebugUI::CreateStaticText(UIElement *inMenu, const string_view &inText)
{
	UIStaticText *text = new UIStaticText();
	text->SetText(inText);
	text->SetFont(mFont);
	inMenu->Add(text);
	return text;
}

UITextButton *DebugUI::CreateTextButton(UIElement *inMenu, const string_view &inName, UITextButton::ClickAction inAction)
{
	UITextButton *button = new UITextButton();
	button->SetText(inName);
	button->SetFont(mFont);
	button->SetClickAction(inAction);
	button->SetTextPadding(0, 24, 0, 0);
	button->SetPaddingRight(24);
	inMenu->Add(button);
	return button;
}

UICheckBox *DebugUI::CreateCheckBox(UIElement *inMenu, const string_view &inName, bool inInitiallyChecked, UICheckBox::ClickAction inAction)
{
	UICheckBox *check_box = new UICheckBox();
	check_box->SetUncheckedStateQuad(UITexturedQuad(mUITexture, 48, 0, 16, 16));
	check_box->SetCheckedStateQuad(UITexturedQuad(mUITexture, 65, 0, 16, 16));
	check_box->SetFont(mFont);
	check_box->SetText(inName);
	check_box->SetClickAction(inAction);
	check_box->SetState(inInitiallyChecked? UICheckBox::STATE_CHECKED : UICheckBox::STATE_UNCHECKED);
	check_box->SetPaddingRight(24);
	inMenu->Add(check_box);
	return check_box;
}

UISlider *DebugUI::CreateSlider(UIElement *inMenu, const string_view &inName, float inInitialValue, float inMinValue, float inMaxValue, float inStepValue, UISlider::ValueChangedAction inAction)
{
	UIHorizontalStack *horiz = new UIHorizontalStack();
	horiz->SetPaddingRight(24);
	inMenu->Add(horiz);

	UIStaticText *text = new UIStaticText();
	text->SetFont(mFont);
	text->SetTextPadding(0, 24, 0, 0);
	text->SetText(inName);
	text->SetPaddingRight(20);
	horiz->Add(text);

	UISlider *slider = new UISlider();
	slider->SetHeight(24);
	slider->SetWidth(250);
	slider->SetPaddingRight(20);
	slider->SetValue(inInitialValue);
	slider->SetRange(inMinValue, inMaxValue, inStepValue);
	slider->SetValueChangedAction(inAction);
	slider->SetSlider(UITexturedQuad(mUITexture, 44, 37, 1, 9));
	slider->SetThumb(UITexturedQuad(mUITexture, 31, 32, 11, 19));
	horiz->Add(slider);

	UIButton *decr_button = new UIButton();
	decr_button->SetRepeat(0.5f, 0.2f);
	decr_button->SetButtonQuad(UITexturedQuad(mUITexture, 0, 31, 17, 21));
	slider->Add(decr_button);
	slider->SetDecreaseButton(decr_button);

	UIButton *incr_button = new UIButton();
	incr_button->SetRepeat(0.5f, 0.2f);
	incr_button->SetButtonQuad(UITexturedQuad(mUITexture, 13, 31, 17, 21));
	slider->Add(incr_button);
	slider->SetIncreaseButton(incr_button);

	UIImage *image = new UIImage();
	image->SetImage(UITexturedQuad(mUITexture, 34, 0, 13, 24, 36, 2, 9, 20));
	horiz->Add(image);

	UIStaticText *value = new UIStaticText();
	value->SetWidth(75);
	value->SetTextPadding(0, 5, 0, 5);
	value->SetWrap(true);
	value->SetTextAlignment(UIElement::RIGHT);
	value->SetFont(mFont);
	image->Add(value);
	slider->SetStaticText(value);

	return slider;
}

UIComboBox *DebugUI::CreateComboBox(UIElement *inMenu, const string_view &inName, const Array<String> &inItems, int inInitialItem, UIComboBox::ItemChangedAction inAction)
{
	UIHorizontalStack *horiz = new UIHorizontalStack();
	horiz->SetPaddingRight(24);
	inMenu->Add(horiz);

	UIStaticText *text = new UIStaticText();
	text->SetFont(mFont);
	text->SetTextPadding(0, 24, 0, 0);
	text->SetText(inName);
	text->SetPaddingRight(20);
	horiz->Add(text);

	UIComboBox *combo = new UIComboBox();
	combo->SetHeight(24);
	combo->SetWidth(250);
	combo->SetPaddingRight(20);
	combo->SetItems(inItems);
	combo->SetCurrentItem(inInitialItem);
	combo->SetItemChangedAction(inAction);
	horiz->Add(combo);

	UIButton *prev_button = new UIButton();
	prev_button->SetRepeat(0.5f, 0.2f);
	prev_button->SetButtonQuad(UITexturedQuad(mUITexture, 0, 31, 17, 21));
	combo->Add(prev_button);
	combo->SetPreviousButton(prev_button);

	UIButton *next_button = new UIButton();
	next_button->SetRepeat(0.5f, 0.2f);
	next_button->SetButtonQuad(UITexturedQuad(mUITexture, 13, 31, 17, 21));
	combo->Add(next_button);
	combo->SetNextButton(next_button);

	UIStaticText *value = new UIStaticText();
	value->SetTextPadding(0, 5, 0, 5);
	value->SetWrap(false);
	value->SetTextAlignment(UIElement::CENTER);
	value->SetFont(mFont);
	combo->Add(value);
	combo->SetStaticText(value);

	return combo;
}

void DebugUI::ShowMenu(UIElement *inMenu)
{
	UIHorizontalStack::sUniformChildWidth(inMenu);
	mUI->AutoLayout();
	mUI->SwitchToState(UIManager::STATE_ACTIVATING);
}

void DebugUI::BackToMain()
{
	while (mUI->GetNumLayers() > 2)
		mUI->PopLayer();
}

void DebugUI::ToggleVisibility()
{
	if (mUI->GetNumLayers() > 2)
		mUI->SwitchToState(UIManager::STATE_DEACTIVATING);
	else
		mUI->SetVisible(!mUI->IsVisible());
}