#pragma once
///////////////////////////////////////////////////////////////////////////////
// Form1.h - Demonstrate Drawing on a C++/CLI form                           //
//                                                                           //
// Jim Fawcett, CSE681 - Software Modeling and Analysis, Fall 2008           //
///////////////////////////////////////////////////////////////////////////////

#include "../DrawLib/DrawLib.h"

namespace Drawer {

  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 System::Drawing::Drawing2D;

  /// <summary>
  /// Summary for Form1
  ///
  /// WARNING: If you change the name of this class, you will need to change the
  ///          'Resource File Name' property for the managed resource compiler tool
  ///          associated with all .resx files this class depends on.  Otherwise,
  ///          the designers will not be able to interact properly with localized
  ///          resources associated with this form.
  /// </summary>
  public ref class Form1 : public System::Windows::Forms::Form
  {
  public:
    Form1(void)
    {
      InitializeComponent();
    }

  protected:
    ~Form1()
    {
      if (components)
      {
        delete components;
      }
    }
  private: 
    System::Windows::Forms::Button^  button1; 
    System::Windows::Forms::Button^  button2;
    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->SuspendLayout();
      // 
      // button1
      // 
      this->button1->Anchor = static_cast<System::Windows::Forms::AnchorStyles>((System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left));
      this->button1->Location = System::Drawing::Point(56, 223);
      this->button1->Name = L"button1";
      this->button1->Size = System::Drawing::Size(75, 23);
      this->button1->TabIndex = 0;
      this->button1->Text = L"draw";
      this->button1->UseVisualStyleBackColor = true;
      this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
      // 
      // button2
      // 
      this->button2->Anchor = static_cast<System::Windows::Forms::AnchorStyles>((System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left));
      this->button2->Location = System::Drawing::Point(161, 223);
      this->button2->Name = L"button2";
      this->button2->Size = System::Drawing::Size(75, 23);
      this->button2->TabIndex = 1;
      this->button2->Text = L"save";
      this->button2->UseVisualStyleBackColor = true;
      this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
      // 
      // Form1
      // 
      this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
      this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
      this->ClientSize = System::Drawing::Size(284, 264);
      this->Controls->Add(this->button2);
      this->Controls->Add(this->button1);
      this->Name = L"Form1";
      this->Text = L"Form1";
      this->Load += gcnew System::EventHandler(this, &Form1::Form1_Load);
      this->Paint += gcnew System::Windows::Forms::PaintEventHandler(this, &Form1::Form1_Paint);
      this->SizeChanged += gcnew System::EventHandler(this, &Form1::Form1_SizeChanged);
      this->ResumeLayout(false);

    }
#pragma endregion

  private: 
    Image^ image;
    Rectangle rect;
    System::Drawing::Region^ region;
    bool redraw;
    static bool first = true;
    int left, top, width, height;

    //----< initialize form >--------------------------------------------------

    System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e) 
    {
      redraw = false;
      rect = this->ClientRectangle;
      rect.Width -= 20;
      rect.Height -= 65;
      rect.X = 10;
      rect.Y = 10;
      region = gcnew System::Drawing::Region(rect);
    }
    //----< generate drawing - just a random rectangle here >------------------

    void prepareDrawing(Graphics^% g)
    {
      // access to native drawing code

      Drawer::DrawingInfo^ di = gcnew Drawer::DrawingInfo();

      if(redraw)
      {
        int* points = di->getPoints();
        left = points[0];
        top = points[1];
        width = points[2];
        height = points[3];
      }
      g->FillRectangle(Brushes::BlanchedAlmond,left,top,width,height);
      g->DrawRectangle(Pens::Black,left,top,width,height);
      g->DrawString(
        redraw.ToString(),
        this->Font,
        Brushes::Black,
        float(left+10),float(top+10)
      );
      first = false;
    }
    //----< paint handler >----------------------------------------------------

    System::Void Form1_Paint(
      System::Object^  sender, System::Windows::Forms::PaintEventArgs^  e
    ) 
    {
      Graphics^ g = e->Graphics;
      g->Clip = region;
      g->FillRectangle(Brushes::White,10,10,rect.Width,rect.Height);
      g->DrawRectangle(Pens::Black,10,10,rect.Width,rect.Height);
      prepareDrawing(g);
      redraw = false;
    }
    //----< save button handler >----------------------------------------------

    System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) 
    {
      Graphics^ saveGraphics = this->CreateGraphics();
      image = gcnew Bitmap(
        this->ClientRectangle.Width, 
        this->ClientRectangle.Height,
        saveGraphics
      );
      Graphics^ imageGraphics = Graphics::FromImage(image);
      saveGraphics->Clip = region;
      saveGraphics->FillRectangle(Brushes::White,10,10,rect.Width,rect.Height);
      saveGraphics->DrawRectangle(Pens::Black,10,10,rect.Width,rect.Height);
      prepareDrawing(imageGraphics);
      image->Save("SavedDrawing.png");
      this->Invalidate();
    }
    //----< resize handler >---------------------------------------------------

    System::Void Form1_SizeChanged(System::Object^  sender, System::EventArgs^  e) 
    {
      rect = this->ClientRectangle;
      rect.Width -= 20;
      rect.Height -= 65;
      rect.X = 10;
      rect.Y = 10;
      region = gcnew System::Drawing::Region(rect);
      redraw = false;
      this->Invalidate();
    }
    //----< draw button handler >----------------------------------------------

    System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) 
    {
      redraw = true;
      this->Invalidate();
    }
  };
}