olcPixelGameEngine/examples/TEST_QuickGUI.cpp

/*
	Example file for olcPGEX_QuickGUI.h

	License (OLC-3)
	~~~~~~~~~~~~~~~

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	~~~~~~
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*/

#define OLC_PGE_APPLICATION
#include "olcPixelGameEngine.h"

// PGEX Require the presence of olc::PixelGameEngine
#define OLC_PGEX_QUICKGUI
#include "extensions/olcPGEX_QuickGUI.h"


class olcDemo_QuickGUI : public olc::PixelGameEngine
{
public:
	olcDemo_QuickGUI()
	{
		sAppName = "olcDemo_QuickGUI";
	}

protected:
	olc::QuickGUI::Manager guiManager;

	olc::QuickGUI::Slider* guiSlider1 = nullptr;
	olc::QuickGUI::Slider* guiSlider2 = nullptr;
	olc::QuickGUI::Slider* guiSlider3 = nullptr;

	olc::QuickGUI::Button* guiButton1 = nullptr;
	olc::QuickGUI::Button* guiButton2 = nullptr;
	olc::QuickGUI::Button* guiButton3 = nullptr;

	olc::QuickGUI::Slider* guiThemeColourR = nullptr;
	olc::QuickGUI::Slider* guiThemeColourG = nullptr;
	olc::QuickGUI::Slider* guiThemeColourB = nullptr;

	olc::QuickGUI::Label* guiLabelR = nullptr;
	olc::QuickGUI::Label* guiLabelG = nullptr;
	olc::QuickGUI::Label* guiLabelB = nullptr;

	olc::QuickGUI::CheckBox* guiCheckBox1 = nullptr;

	olc::QuickGUI::TextBox* guiTextBox1 = nullptr;
	olc::QuickGUI::TextBox* guiTextBox2 = nullptr;


	std::vector<std::string> listExample;
	olc::QuickGUI::ListBox* guiListBox = nullptr;

public:
	bool OnUserCreate() override
	{
		// Horizontal Slider
		guiSlider1 = new olc::QuickGUI::Slider(guiManager, 
			{ 30.0f, 10.0f }, { 246.0f, 10.0f }, 0, 100, 50);
		// Diagonal Slider!
		guiSlider2 = new olc::QuickGUI::Slider(guiManager, 
			{ 20.0f, 20.0f }, { 120.0f, 120.0f }, 0, 100, 50);
		// Vertical Slider
		guiSlider3 = new olc::QuickGUI::Slider(guiManager, 
			{ 10.0f, 30.0f }, { 10.0f, 230.0f }, 0, 100, 50);

		// Theme colour slider - Red
		guiThemeColourR = new olc::QuickGUI::Slider(guiManager,
			{ 150.0f, 30.0f }, { 246.0f, 30.0f }, 0, 255, 0);
		// Theme colour slider - Green
		guiThemeColourG = new olc::QuickGUI::Slider(guiManager,
			{ 150.0f, 50.0f }, { 246.0f, 50.0f }, 0, 255, 0);
		// Theme colour slider - Blue
		guiThemeColourB = new olc::QuickGUI::Slider(guiManager,
			{ 150.0f, 70.0f }, { 246.0f, 70.0f }, 0, 255, 128);

		// Labels for theme colour sliders
		guiLabelR = new olc::QuickGUI::Label(guiManager,
			"Red:", { 80.0f, 22.0f }, { 50.0f, 16.0f });
		guiLabelG = new olc::QuickGUI::Label(guiManager,
			"Green:", { 80.0f, 42.0f }, { 50.0f, 16.0f });
		guiLabelB = new olc::QuickGUI::Label(guiManager,
			"Blue:", { 80.0f, 62.0f }, { 50.0f, 16.0f });

		// Customize how the labels look
		guiLabelB->nAlign = olc::QuickGUI::Label::Alignment::Right;		
		guiLabelG->nAlign = olc::QuickGUI::Label::Alignment::Right;
		guiLabelG->bHasBorder = true;		
		guiLabelR->nAlign = olc::QuickGUI::Label::Alignment::Right;
		guiLabelR->bHasBorder = true;
		guiLabelR->bHasBackground = true;

		// Some Buttons, 1 is just a thing, 2 has its text updated and 3 resets the theme
		guiButton1 = new olc::QuickGUI::Button(guiManager,
			"Button 1", { 30.0f, 150.0f }, { 100.0f, 16.0f });
		guiButton2 = new olc::QuickGUI::Button(guiManager,
			"Button 2", { 30.0f, 170.0f }, { 100.0f, 16.0f });
		guiButton3 = new olc::QuickGUI::Button(guiManager,
			"Reset Theme", { 30.0f, 190.0f }, { 100.0f, 16.0f });

		// A CheckBox, switches between sprite or decal drawing
		guiCheckBox1 = new olc::QuickGUI::CheckBox(guiManager,
			"Use Decals", false, { 30.0f, 210.0f }, { 100.0f, 16.0f });

		// TextBox, allows basic text entry
		guiTextBox1 = new olc::QuickGUI::TextBox(guiManager,
			"", { 150.0f, 140.0f }, { 100.0f, 16.0f });
		guiTextBox2 = new olc::QuickGUI::TextBox(guiManager,
			"0.04", { 150.0f, 160.0f }, { 100.0f, 16.0f });

		listExample.push_back("Item 1");
		listExample.push_back("Item 2");
		listExample.push_back("Item 3");
		listExample.push_back("Item 4");
		listExample.push_back("Item 5");
		listExample.push_back("Item 6");

		guiListBox = new olc::QuickGUI::ListBox(guiManager,
			listExample, { 150.0f, 180.0f }, { 100.0f, 54.0f });

		// but but but.... waaaaaaaaahaaaaaaaa.... where do I delete these horrible
		// pointers??? I just can't accept that addressable memory exists and it makes
		// me feel really insecure!
		//
		// By default olc::QuickGUI::Manager will delete any Controls added to it, so you
		// dont have to. If you must obfuscate your program with smart pointers, or require
		// that you are in rage-control of your memory at all times, construct the Manager
		// with false as the argument - then its all up to you buddy.

		return true;
	}

	bool OnUserUpdate(float fElapsedTime) override
	{
		// We must update the manager at some point each frame. Values of controls
		// are only valid AFTER this call to update()
		guiManager.Update(this);

		// Some silly examples...

		// 001) The "theme colour" can be set from slider values
		guiManager.colNormal = olc::Pixel(
			uint8_t(guiThemeColourR->fValue),
			uint8_t(guiThemeColourG->fValue),
			uint8_t(guiThemeColourB->fValue));

		// 002) Display Slider 1 value on Button 2
		guiButton2->sText = "Button " + std::to_string(int32_t(guiSlider1->fValue));

		// 003) Check if "Reset Theme" button is pressed, if it is, well, err...
		if (guiButton3->bPressed)
		{
			// ...reset the theme! (which also updates the sliders)
			guiThemeColourR->fValue = 0.0f;
			guiThemeColourG->fValue = 0.0f;
			guiThemeColourB->fValue = 128.0f;
		}

		// 004) Link Slider 2 and Slider 3 together
		if(guiSlider2->bHeld)
			guiSlider3->fValue = 100.0f - guiSlider2->fValue;
		if (guiSlider3->bHeld)
			guiSlider2->fValue = 100.0f - guiSlider3->fValue;
		

		// Draw Stuff!
		Clear(olc::BLACK);

		// 005) Use checkbox to determine rendering mode
		if (guiCheckBox1->bChecked)
			guiManager.DrawDecal(this);
		else
			guiManager.Draw(this);
		return true;
	}
};

int main()
{
	olcDemo_QuickGUI demo;
	if (demo.Construct(256, 240, 4, 4))
		demo.Start();
	return 0;
}