Doodle

#pragma once

namespace VCDoodle

{

using namespace System;

using namespace System::ComponentModel;

using namespace System::Collections;

using namespace System::Windows::Forms;

using namespace System::Data;

using namespace System::Drawing;

/// <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();

//TODO: Add the constructor code here

}

protected:

/// <summary>

/// Clean up any resources being used.

/// </summary>

/// <param name="disposing">"description of the parameter"</param>

private: System::Windows::Forms::Panel^ pnlControl;

private: System::Windows::Forms::Button^ btnClear;

private: System::Windows::Forms::ComboBox^ cbxColor;

protected:

private: System::Windows::Forms::Label^ lblColor;

private: System::Windows::Forms::Button^ btnDraw;

private: System::Windows::Forms::Button^ btnFillCircle;

private: System::Windows::Forms::Button^ btnFillRectangle;

private: System::Windows::Forms::Button^ btnCircle;

private: System::Windows::Forms::Button^ btnLine;

private: System::Windows::Forms::Button^ btnRectangle;

private: System::Windows::Forms::Label^ lblControls;

private:

/// <summary>

/// Required designer variable.

/// </summary>

System::ComponentModel::Container ^components;

//Handle to manage form's drawing functionality

System::Drawing::Graphics ^FormGraphic;

//Handle to manage drawing pen

System::Drawing::Pen ^pen;

//Handle to manage graphical brush

System::Drawing::SolidBrush ^brush;

//Variables to manage drawing coordinates

System::Drawing::Point ptStart, ptEnd;

//Values for possible drawing states

enum class DrawingMode: Int16 {

DRAWRECTANGE, DRAWLINE, DRAWCIRCLE, DRAWFILLRECTANGLE,

DRAWFILLCIRCLE, DRAWFREE, DRAWNONE

};

//Variables to track current drawing state

DrawingMode drmCurrentMode;

//Flag to determine if drawing is in progress

Boolean blnDrawing;

#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->pnlControl = (gcnew System::Windows::Forms::Panel());

this->btnClear = (gcnew System::Windows::Forms::Button());

this->cbxColor = (gcnew System::Windows::Forms::ComboBox());

this->lblColor = (gcnew System::Windows::Forms::Label());

this->btnDraw = (gcnew System::Windows::Forms::Button());

this->btnFillCircle = (gcnew System::Windows::Forms::Button());

this->btnFillRectangle = (gcnew System::Windows::Forms::Button());

this->btnCircle = (gcnew System::Windows::Forms::Button());

this->btnLine = (gcnew System::Windows::Forms::Button());

this->btnRectangle = (gcnew System::Windows::Forms::Button());

this->lblControls = (gcnew System::Windows::Forms::Label());

this->pnlControl->SuspendLayout();

this->SuspendLayout();

// pnlControl

this->pnlControl->BackColor = System::Drawing::Color::LightGray;

this->pnlControl->Controls->Add(this->btnClear);

this->pnlControl->Controls->Add(this->cbxColor);

this->pnlControl->Controls->Add(this->lblColor);

this->pnlControl->Controls->Add(this->btnDraw);

this->pnlControl->Controls->Add(this->btnFillCircle);

this->pnlControl->Controls->Add(this->btnFillRectangle);

this->pnlControl->Controls->Add(this->btnCircle);

this->pnlControl->Controls->Add(this->btnLine);

this->pnlControl->Controls->Add(this->btnRectangle);

this->pnlControl->Controls->Add(this->lblControls);

this->pnlControl->Location = System::Drawing::Point(0, 0);

this->pnlControl->Name = L"pnlControl";

this->pnlControl->Size = System::Drawing::Size(130, 430);

this->pnlControl->TabIndex = 0;

// btnClear

this->btnClear->Location = System::Drawing::Point(12, 304);

this->btnClear->Name = L"btnClear";

this->btnClear->Size = System::Drawing::Size(96, 23);

this->btnClear->TabIndex = 9;

this->btnClear->Text = L"Clear";

this->btnClear->Click += gcnew System::EventHandler(this, &Form1::btnClear_Click);

// cbxColor

this->cbxColor->FormattingEnabled = true;

this->cbxColor->Items->AddRange(gcnew cli::array< System::Object^ >(6) {L"Red", L"Green", L"Blue", L"Black", L"Yellow",

L"Purple"});

this->cbxColor->Location = System::Drawing::Point(4, 260);

this->cbxColor->Name = L"cbxColor";

this->cbxColor->Size = System::Drawing::Size(121, 21);

this->cbxColor->TabIndex = 8;

this->cbxColor->Text = L"Red";

this->cbxColor->SelectedIndexChanged += gcnew System::EventHandler(this, &Form1::cbxColor_SelectedIndexChanged);

// lblColor

this->lblColor->AutoSize = true;

this->lblColor->Font = (gcnew System::Drawing::Font(L"Microsoft Sans Serif", 8.25F, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,

static_cast<System::Byte>(0)));

this->lblColor->Location = System::Drawing::Point(28, 244);

this->lblColor->Name = L"lblColor";

this->lblColor->Size = System::Drawing::Size(80, 13);

this->lblColor->TabIndex = 7;

this->lblColor->Text = L"Select Color:";

// btnDraw

this->btnDraw->Location = System::Drawing::Point(12, 194);

this->btnDraw->Name = L"btnDraw";

this->btnDraw->Size = System::Drawing::Size(96, 23);

this->btnDraw->TabIndex = 6;

this->btnDraw->Text = L"Draw";

this->btnDraw->Click += gcnew System::EventHandler(this, &Form1::btnDraw_Click);

// btnFillCircle

this->btnFillCircle->Location = System::Drawing::Point(12, 165);

this->btnFillCircle->Name = L"btnFillCircle";

this->btnFillCircle->Size = System::Drawing::Size(96, 23);

this->btnFillCircle->TabIndex = 5;

this->btnFillCircle->Text = L"Fill Circle";

this->btnFillCircle->Click += gcnew System::EventHandler(this, &Form1::btnFillCircle_Click);

// btnFillRectangle

this->btnFillRectangle->Location = System::Drawing::Point(12, 136);

this->btnFillRectangle->Name = L"btnFillRectangle";

this->btnFillRectangle->Size = System::Drawing::Size(96, 23);

this->btnFillRectangle->TabIndex = 4;

this->btnFillRectangle->Text = L"Fill Rectangle";

this->btnFillRectangle->Click += gcnew System::EventHandler(this, &Form1::btnFillRectangle_Click);

// btnCircle

this->btnCircle->Location = System::Drawing::Point(12, 107);

this->btnCircle->Name = L"btnCircle";

this->btnCircle->Size = System::Drawing::Size(96, 23);

this->btnCircle->TabIndex = 3;

this->btnCircle->Text = L"Circle";

this->btnCircle->Click += gcnew System::EventHandler(this, &Form1::btnCircle_Click);

// btnLine

this->btnLine->Location = System::Drawing::Point(12, 78);

this->btnLine->Name = L"btnLine";

this->btnLine->Size = System::Drawing::Size(96, 23);

this->btnLine->TabIndex = 2;

this->btnLine->Text = L"Line";

this->btnLine->Click += gcnew System::EventHandler(this, &Form1::btnLine_Click);

// btnRectangle

this->btnRectangle->Location = System::Drawing::Point(12, 49);

this->btnRectangle->Name = L"btnRectangle";

this->btnRectangle->Size = System::Drawing::Size(96, 23);

this->btnRectangle->TabIndex = 1;

this->btnRectangle->Text = L"Rectangle";

this->btnRectangle->Click += gcnew System::EventHandler(this, &Form1::btnRectangle_Click);

// lblControls

this->lblControls->AutoSize = true;

this->lblControls->Font = (gcnew System::Drawing::Font(L"Microsoft Sans Serif", 8.25F, System::Drawing::FontStyle::Bold, System::Drawing::GraphicsUnit::Point,

static_cast<System::Byte>(0)));

this->lblControls->Location = System::Drawing::Point(40, 9);

this->lblControls->Name = L"lblControls";

this->lblControls->Size = System::Drawing::Size(53, 13);

this->lblControls->TabIndex = 0;

this->lblControls->Text = L"Controls";

// Form1

this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);

this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;

this->BackColor = System::Drawing::Color::White;

this->ClientSize = System::Drawing::Size(580, 424);

this->Controls->Add(this->pnlControl);

this->Cursor = System::Windows::Forms::Cursors::Cross;

this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::Fixed3D;

this->Name = L"Form1";

this->Text = L"VC++ Doodle";

this->MouseUp += gcnew System::Windows::Forms::MouseEventHandler(this, &Form1::HandleMouseUp);

this->MouseMove += gcnew System::Windows::Forms::MouseEventHandler(this, &Form1::HandleMouseMove);

this->MouseDown += gcnew System::Windows::Forms::MouseEventHandler(this, &Form1::HandleMouseDown);

this->Load += gcnew System::EventHandler(this, &Form1::Form1_Load);

this->pnlControl->ResumeLayout(false);

this->pnlControl->PerformLayout();

this->ResumeLayout(false);

}

#pragma endregion

private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e) {

FormGraphic = this->CreateGraphics();

pen = gcnew System::Drawing::Pen( \

System::Drawing::Color::FromName( cbxColor->Text ) );

brush = gcnew System::Drawing::SolidBrush( \

System::Drawing::Color::FromName( cbxColor->Text ) );

//Set the default drawing coordinates to center screen

ptStart.X = this->Size.Width / 2;

ptStart.Y = this->Size.Height / 2;

ptEnd.X = this->Size.Width / 2;

ptEnd.Y = this->Size.Height / 2;

//Set default drawing mode

drmCurrentMode = DrawingMode::DRAWNONE;

blnDrawing = false;

}

private: System::Void btnRectangle_Click(System::Object^ sender, System::EventArgs^ e) {

drmCurrentMode = DrawingMode::DRAWRECTANGE;

}

private: System::Void btnLine_Click(System::Object^ sender, System::EventArgs^ e) {

drmCurrentMode = DrawingMode::DRAWLINE;

}

private: System::Void btnCircle_Click(System::Object^ sender, System::EventArgs^ e) {

drmCurrentMode = DrawingMode::DRAWCIRCLE;

}

private: System::Void btnFillRectangle_Click(System::Object^ sender, System::EventArgs^ e) {

drmCurrentMode = DrawingMode::DRAWFILLRECTANGLE;

}

private: System::Void btnFillCircle_Click(System::Object^ sender, System::EventArgs^ e) {

drmCurrentMode = DrawingMode::DRAWFILLCIRCLE;

}

private: System::Void btnDraw_Click(System::Object^ sender, System::EventArgs^ e) {

drmCurrentMode = DrawingMode::DRAWFREE;

}

private: System::Void cbxColor_SelectedIndexChanged(System::Object^ sender, System::EventArgs^ e) {

//Set pen and brush colors

pen->Color = \

System::Drawing::Color::FromName( cbxColor->Text );

brush->Color = \

System::Drawing::Color::FromName( cbxColor->Text );

}

private: System::Void btnClear_Click(System::Object^ sender, System::EventArgs^ e) {

//Clear the form to the background color

FormGraphic->Clear( this->BackColor );

}

private: System::Void HandleMouseUp(System::Object^ sender, System::Windows::Forms::MouseEventArgs^ e) {

blnDrawing = false;

//Stop drawing if current mode is freehand drawing

if( drmCurrentMode == DrawingMode::DRAWFREE )

return;

//Draw shape

if( drmCurrentMode != DrawingMode::DRAWNONE )

{

//If the current mode is a line, draw it

if( drmCurrentMode == DrawingMode::DRAWLINE )

{

FormGraphic->DrawLine( pen, ptStart, ptEnd );

return;

}

//Current mode is a shape

//Create a rectangle to represent shape extents

// Height and width are composed of absolute

// value difference between the two X and Y

// coordinates

System::Drawing::Rectangle shapeRect(

ptStart.X, ptStart.Y,

Math::Abs( ptEnd.X - ptStart.X ),

Math::Abs( ptEnd.Y - ptStart.Y ) );

//Draw the shape

DrawShape( shapeRect );

}

private: System::Void HandleMouseMove(System::Object^ sender, System::Windows::Forms::MouseEventArgs^ e) {

if( blnDrawing == true )

{

ptEnd.X = e->X;

ptEnd.Y = e->Y;

if( drmCurrentMode == DrawingMode::DRAWFREE )

{

//Offset the current coordinates so that

// a small line can be drawn to represent

// the current point

ptStart.X = e->X + 1;

ptStart.Y = e->Y + 1;

FormGraphic->DrawLine( pen, ptStart, ptEnd );

}

private: System::Void HandleMouseDown(System::Object^ sender, System::Windows::Forms::MouseEventArgs^ e) {

if( drmCurrentMode != DrawingMode::DRAWNONE )

{

//Now drawing, set starting coordinates

ptStart.X = e->X;

ptStart.Y = e->Y;

blnDrawing = true;

}

private: System::Void DrawShape( System::Drawing::Rectangle rect ) {

//Set a default shape rectangle

switch( drmCurrentMode )

{

case DrawingMode::DRAWRECTANGE :

FormGraphic->DrawRectangle( pen, rect );

break;

case DrawingMode::DRAWCIRCLE :

FormGraphic->DrawEllipse( pen, rect );

break;

case DrawingMode::DRAWFILLRECTANGLE :

FormGraphic->FillRectangle( brush, rect );

break;

case DrawingMode::DRAWFILLCIRCLE :

FormGraphic->FillEllipse( brush, rect );

break;

}

};

}