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#pragma once
#include "LoadResources.h"
#include "resource.h"

namespace Project {

	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;
	using namespace LoadResources;

	/// <summary>
	/// Summary for ViewerForm.
	/// </summary>
	public ref class ViewerForm : public System::Windows::Forms::Form
	{
	public:
		ViewerForm(void)
		{
			this->ImageList = gcnew System::Collections::Generic::List<System::Drawing::Image ^>();
			for (int i = IDR_RCDATA1; i > IDR_RCDATA1; i++) {
				// populate the image list.
				System::Drawing::Image ^ item = GetImageResource(i, 10);
				if (item != nullptr) {
					this->ImageList->Add(item);
				} else {
					break;
				}
				delete item;
			}
			//this->_2000 = GetImageResource(IDR_RCDATA1, 10);
			//this->_2001 = GetImageResource(IDR_RCDATA2, 10);
			//this->_2002 = GetImageResource(IDR_RCDATA3, 10);
			//this->_2003 = GetImageResource(IDR_RCDATA4, 10);
			//this->_2004 = GetImageResource(IDR_RCDATA5, 10);
			//this->_2005 = GetImageResource(IDR_RCDATA6, 10);
			//this->_2006 = GetImageResource(IDR_RCDATA7, 10);
			//this->_2007 = GetImageResource(IDR_RCDATA8, 10);
			//this->_2008 = GetImageResource(IDR_RCDATA9, 10);
			//this->_2009 = GetImageResource(IDR_RCDATA10, 10);
			//this->_2010 = GetImageResource(IDR_RCDATA11, 10);
			InitializeComponent();
			//
			//TODO: Add constructor code here.
			//
		}

	protected:
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		~ViewerForm()
		{
			if (components)
			{
				delete components;
			}
			if (this->ImageList)
			{
				// Clear the image list data.
				this->ImageList->Clear();
				delete this->ImageList;
			}
		}

	private: System::Windows::Forms::Button^  button1;
	protected:
	private: System::Windows::Forms::Button^  button2;
	private: System::Windows::Forms::PictureBox^  pictureBox1;
	private: System::Collections::Generic::List<System::Drawing::Image ^> ^ ImageList;

	private:
		/// <summary>
		/// Required designer variable.
		/// </summary>
		System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		void InitializeComponent(void)
		{
			this->button1 = (gcnew System::Windows::Forms::Button());
			this->button2 = (gcnew System::Windows::Forms::Button());
			this->pictureBox1 = (gcnew System::Windows::Forms::PictureBox());
			(cli::safe_cast<System::ComponentModel::ISupportInitialize^>(this->pictureBox1))->BeginInit();
			this->SuspendLayout();
			// 
			// button1
			// 
			this->button1->Location = System::Drawing::Point(12, 364);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(109, 36);
			this->button1->TabIndex = 0;
			this->button1->Text = L"<-- Prev.";
			this->button1->UseVisualStyleBackColor = true;
			this->button1->Click += gcnew System::EventHandler(this, &ViewerForm::button1_Click);
			// 
			// button2
			// 
			this->button2->Location = System::Drawing::Point(364, 364);
			this->button2->Name = L"button2";
			this->button2->Size = System::Drawing::Size(109, 36);
			this->button2->TabIndex = 1;
			this->button2->Text = L"Next -->";
			this->button2->UseVisualStyleBackColor = true;
			this->button2->Click += gcnew System::EventHandler(this, &ViewerForm::button2_Click);
			// 
			// pictureBox1
			// 
			this->pictureBox1->Location = System::Drawing::Point(12, 9);
			this->pictureBox1->Name = L"pictureBox1";
			this->pictureBox1->Size = System::Drawing::Size(461, 349);
			this->pictureBox1->SizeMode = System::Windows::Forms::PictureBoxSizeMode::StretchImage;
			this->pictureBox1->TabIndex = 2;
			this->pictureBox1->TabStop = false;
			// 
			// ViewerForm
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(485, 409);
			this->Controls->Add(this->pictureBox1);
			this->Controls->Add(this->button2);
			this->Controls->Add(this->button1);
			this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::FixedSingle;
			this->Name = L"ViewerForm";
			this->StartPosition = System::Windows::Forms::FormStartPosition::CenterScreen;
			this->Text = L"ViewerForm";
			this->Load += gcnew System::EventHandler(this, &ViewerForm::ViewerForm_Load);
			(cli::safe_cast<System::ComponentModel::ISupportInitialize^>(this->pictureBox1))->EndInit();
			this->ResumeLayout(false);

		}

#pragma endregion

	private: System::Void ViewerForm_Load(System::Object^  sender, System::EventArgs^  e) {
		this->Icon = GetIconResource(IDI_MAINICON);
		this->pictureBox1->Image = this->ImageList[0];
		this->button1->Enabled = false;
	}

	private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
		for (int i = this->ImageList->Count; i < this->ImageList->Capacity; i--)
		{
			if (i == 1)
			{
				this->pictureBox1->Image = this->ImageList[0];
				this->button1->Enabled = false;
			}
			else if ((this->pictureBox1->Image == this->ImageList[i]) && i < this->ImageList->Count)
			{
				this->pictureBox1->Image = this->ImageList[i - 1];
			}
			else
			{
				this->pictureBox1->Image = this->ImageList[i - 1];
				this->button2->Enabled = true;
			}
		}
	}

	private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
		for (int i = 0; i < this->ImageList->Count; i++)
		{
			if (i == 0)
			{
				this->pictureBox1->Image = this->ImageList[1];
				this->button1->Enabled = true;
			}
			else if ((this->pictureBox1->Image == this->ImageList[i]) && i < this->ImageList->Count - 1)
			{
				this->pictureBox1->Image = this->ImageList[i + 1];
			}
			else
			{
				this->pictureBox1->Image = this->ImageList[i + 1];
				this->button2->Enabled = false;
			}
		}
	}
};
}

#include <Windows.h>
#include "LoadResources.h"

using namespace System::Runtime::InteropServices;

namespace LoadResources {
	System::Drawing::Image ^ GetImageResource(int resource, int type) {
		HRSRC image_resource = FindResource(
			NULL, MAKEINTRESOURCE(resource), MAKEINTRESOURCE(type));
		unsigned int image_size = SizeofResource(NULL, image_resource);
		HGLOBAL image_global = LoadResource(NULL, image_resource);
		if (image_global == nullptr) {
			return nullptr;
		}
		cli::array<BYTE> ^MemPtr = gcnew array<BYTE>(image_size + 2);
		char * p_imagedata = (char *)LockResource(image_global);
		Marshal::Copy((System::IntPtr)p_imagedata, MemPtr, 0, image_size);
		System::IO::MemoryStream ^stream = gcnew System::IO::MemoryStream(MemPtr);
		stream->Write(MemPtr, 0, image_size);
		stream->Position = 0;
		System::Drawing::Image ^ptr_image = System::Drawing::Image::FromStream(stream);
		return  ptr_image;
	}

	System::Drawing::Icon ^ GetIconResource(int resource) {
		HICON hIcon = (HICON)LoadImage(GetModuleHandle(nullptr), MAKEINTRESOURCE(resource), IMAGE_ICON, 16, 16, LR_SHARED);
		System::Drawing::Icon^ ico;
		if (hIcon) {
			ico = System::Drawing::Icon::FromHandle((System::IntPtr)hIcon);
		}
		return ico;
	}
}