MFC based paint

[c.zdravko]

I'm making an MFC based paint as SDI in document view. I need help with making a interface for drawing rect , ellipse, etc.( I know the definition of the interface) . It could be helpfull if someone has a good example. I know the drawing functions but I'm not sure how to put all this together. This is what I have in mind:
///////////////////////////
[class IPick { }; // base interface, functions only

class PickCommon : public IPick {}; // common data members

class Line : public PickCommon {}; // line specific stuff
class Rect : public PickCommon {}; // rect specific stuff/]
/////////////////

Thanks a lot.

[Codeplug]

I'm confused. Do you need help with the actual drawing of shapes to the screen?

gg

[c.zdravko]

I know how to draw I need an interface for the drawing and I don't know what functions I need in. I have to make a derived class for drawing like this.
////////////////
[ class Rect : public PickCommon {}; // rect specific stuff/]

This class is derived from this two and I need some functions in.
////////////////
[ class IPick { }; // base interface, functions only

class PickCommon : public IPick {}; // common data members /]

[Codeplug]

Something like this?

http://www.angelfire.com/tx4/cus/shapes/cpp.html

gg

[c.zdravko]

Yes this is helpfull but I need an interface.
I need all pure virtual functions in base class because I maybe don't need for every tool (line, rect, ellipse) some data members Then I will make derived class from interface and use his functions and add some data members I need.
I also need this class for saving in DocView class . My idea was to this in std::vector or std::list pointers on my bas class.

This is my implementation of View class so if this is helpfull I will be very greatfull.

// verz1View.cpp : implementation of the Cverz1View class
//

#include "stdafx.h"
#include "verz1.h"

#include "verz1Doc.h"
#include "verz1View.h"


#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// Cverz1View

IMPLEMENT_DYNCREATE(Cverz1View, CView)

BEGIN_MESSAGE_MAP(Cverz1View, CView)
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, &CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, &CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, &CView::OnFilePrintPreview)

	//buttoni na toolbaru
	ON_COMMAND(ID_TBBUTTON1,OnLine)
	ON_COMMAND(ID_TBBUTTON2,OnRect)
	ON_COMMAND(ID_TBBUTTON3,OnEllipse)
	ON_COMMAND(ID_TBBUTTON4,OnPencil)
	ON_UPDATE_COMMAND_UI(ID_TBBUTTON1, OnSelectLine)
    ON_UPDATE_COMMAND_UI(ID_TBBUTTON2, OnSelectRect)
    ON_UPDATE_COMMAND_UI(ID_TBBUTTON3, OnSelectEllipse)
	ON_UPDATE_COMMAND_UI(ID_TBBUTTON4, OnSelectPencil)
	ON_COMMAND(ID_TBBUTTON10,OnRed)
	ON_COMMAND(ID_TBBUTTON11,OnGreen)
	ON_COMMAND(ID_TBBUTTON12,OnBlue)
	ON_COMMAND(ID_TBBUTTON13,OnBlack)
	ON_COMMAND(ID_TBBUTTON14,OnWhite)
	ON_UPDATE_COMMAND_UI(ID_TBBUTTON10, OnSelectRed)
	ON_UPDATE_COMMAND_UI(ID_TBBUTTON11, OnSelectGreen)
	ON_UPDATE_COMMAND_UI(ID_TBBUTTON12, OnSelectBlue)
	ON_UPDATE_COMMAND_UI(ID_TBBUTTON13, OnSelectBlack)
	ON_UPDATE_COMMAND_UI(ID_TBBUTTON14, OnSelectWhite)
	ON_COMMAND(ID_TBBUTTON5, OnBrushOn)
	ON_COMMAND(ID_TBBUTTON6, OnBrushOff)
	ON_UPDATE_COMMAND_UI(ID_TBBUTTON5, OnSelectBrushOn)
	ON_UPDATE_COMMAND_UI(ID_TBBUTTON6, OnSelectBrushOff)



	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	
END_MESSAGE_MAP()

// Cverz1View construction/destruction

Cverz1View::Cverz1View() : bBrushOn(false)


{


	CurBrush.lbColor = RGB(255,255,255);
	CurBrush.lbHatch = BS_SOLID;
	CurBrush.lbStyle = HS_CROSS;

	CurPen.lopnColor = RGB(0,0,0);
	CurPen.lopnStyle = PS_SOLID;
	CurPen.lopnWidth.x = 1;

	curTool = ID_TBBUTTON1 ;
	curColor = ID_TBBUTTON10;

}

Cverz1View::~Cverz1View()
{
}



BOOL Cverz1View::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

// Cverz1View drawing

void Cverz1View::OnDraw(CDC* pDC)
{
	
	Cverz1Doc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	
	
}



// Cverz1View printing

BOOL Cverz1View::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void Cverz1View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void Cverz1View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}


// Cverz1View diagnostics

#ifdef _DEBUG
void Cverz1View::AssertValid() const
{
	CView::AssertValid();
}

void Cverz1View::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

Cverz1Doc* Cverz1View::GetDocument() const // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(Cverz1Doc)));
	return (Cverz1Doc*)m_pDocument;
}
#endif //_DEBUG


// Cverz1View message handlers
//////////////////////////////////////////////////////////////////////////////////////////////


void Cverz1View::OnLine() {	
	curTool = ID_TBBUTTON1;
	
}
void Cverz1View::OnRect() {
	curTool = ID_TBBUTTON2;
	
}
void Cverz1View::OnEllipse() {	
	curTool = ID_TBBUTTON3;
	
}
void Cverz1View::OnPencil() {	
	curTool = ID_TBBUTTON4;
}
void Cverz1View::OnRed() {	
	curColor = ID_TBBUTTON10;
	CurBrush.lbColor = RGB(255,0,0);
	CurPen.lopnColor = RGB(255,0,0);
}
void Cverz1View::OnGreen() {	
	curColor = ID_TBBUTTON11;
	CurBrush.lbColor = RGB(0,255,0);
	CurPen.lopnColor = RGB(0,255,0);
}
void Cverz1View::OnBlue() {	
	curColor = ID_TBBUTTON12;
	CurBrush.lbColor = RGB(0,0,255);
	CurPen.lopnColor = RGB(0,0,255);

}
void Cverz1View::OnBlack() {	
	curColor = ID_TBBUTTON13;
	CurBrush.lbColor = RGB(0,0,0);
	CurPen.lopnColor = RGB(0,0,0);
}
void Cverz1View::OnWhite() {	
	curColor = ID_TBBUTTON14;
	CurBrush.lbColor = RGB(255,255,255);
	CurPen.lopnColor = RGB(255,255,255);
}
void Cverz1View::OnBrushOn() 
{
	
bBrushOn=true;	//select brush
CurBrush.lbStyle=BS_SOLID;
}

void Cverz1View::OnBrushOff() 
{
bBrushOn=false;	//select null brush
CurBrush.lbStyle=BS_NULL;
}

void Cverz1View::OnSelectBrushOn(CCmdUI* pCmdUI) 
{
pCmdUI->SetCheck(bBrushOn);	
}

void Cverz1View::OnSelectBrushOff(CCmdUI* pCmdUI) 
{
pCmdUI->SetCheck(!bBrushOn);	
}

/////////////////////////////////////////////////////////////////
//   postavljanje flagova za oznaku pritisnutog buttona
void Cverz1View::OnSelectLine(CCmdUI *pCmdUI) {
	pCmdUI->SetCheck(curTool == ID_TBBUTTON1 ? 1 : 0);
}
void Cverz1View::OnSelectRect(CCmdUI *pCmdUI) {
	pCmdUI->SetCheck(curTool == ID_TBBUTTON2 ? 1 : 0);
}
void Cverz1View::OnSelectEllipse(CCmdUI *pCmdUI) {
	pCmdUI->SetCheck(curTool == ID_TBBUTTON3 ? 1 : 0);
}
void Cverz1View::OnSelectPencil(CCmdUI *pCmdUI) {
	pCmdUI->SetCheck(curTool == ID_TBBUTTON4 ? 1 : 0);
}
void Cverz1View::OnSelectRed(CCmdUI *pCmdUI) {
	pCmdUI->SetCheck(curColor == ID_TBBUTTON10 ? 1 : 0);
}
void Cverz1View::OnSelectGreen(CCmdUI *pCmdUI) {
	pCmdUI->SetCheck(curColor == ID_TBBUTTON11 ? 1 : 0);
}
void Cverz1View::OnSelectBlue(CCmdUI *pCmdUI) {
	pCmdUI->SetCheck(curColor == ID_TBBUTTON12 ? 1 : 0);
}
void Cverz1View::OnSelectBlack(CCmdUI *pCmdUI) {
	pCmdUI->SetCheck(curColor == ID_TBBUTTON13 ? 1 : 0);
}
void Cverz1View::OnSelectWhite(CCmdUI *pCmdUI) {
	pCmdUI->SetCheck(curColor == ID_TBBUTTON14 ? 1 : 0);
}


void Cverz1View::OnLButtonDown(UINT nFlags, CPoint point)
{
Cverz1Doc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// saving mouse position on button down
Point.x = point.x;
Point.y = point.y;

// tu bi išla logika za crtanje
switch(curTool) {
	
		
}


	CView::OnLButtonDown(nFlags, point);
}

void Cverz1View::OnLButtonUp(UINT nFlags, CPoint point)
{
	// TODO: Add your message handler code here and/or call default

	CView::OnLButtonUp(nFlags, point);
}

void Cverz1View::OnMouseMove(UINT nFlags, CPoint point)
{
	// TODO: Add your message handler code here and/or call default

	CView::OnMouseMove(nFlags, point);
}