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Implementing Rulers inside of Splitter Panes - 2

, 18 Dec 2002 CPOL
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Using fixed panes to add rulers to your view

Sample Image - Mdi.gif

Introduction

Implementing Rulers inside of Splitter Panes - 2, is based on Stefan Ungureanu's work. This article provides an example to implementation in an MDI and SDI application.

I have changed the way to create the ruler, add function to Show/Hide the ruler and reformat some part of code.

Implementation

MDI way

#include "Ruler.h"
class CChildFrame : public CMDIChildWnd
{
    ...
    private: CRulerSplitterWnd m_Rulers; //Ruler object
    public: void ShowRulers(BOOL bShow);//Toggle the ruler
    void UpdateRulersInfo(stRULER_INFO stRulerInfo);//Update the ruler
    ...
};
//Create the ruler<BR>
BOOL CChildFrame::OnCreateClient(LPCREATESTRUCT lpcs, 
                                CCreateContext* pContext)
{
    if (!m_Rulers.CreateRulers(this, pContext)) {
        TRACE("Error creation of rulers\n");
        return CMDIChildWnd::OnCreateClient(lpcs, pContext);
    }
    return TRUE;
}

//Toggle the ruler
void CChildFrame::ShowRulers(BOOL bShow)
{
    m_Rulers.ShowRulers(bShow);<BR>
}

//Update the ruler<BR>
void CChildFrame::UpdateRulersInfo(stRULER_INFO stRulerInfo)
{
    m_Rulers.UpdateRulersInfo(stRulerInfo);
}

SDI way

#include "Ruler.h"
class CMainFrame : public CFrameWnd
{
    ....

All the rest is the same as MDI implementation.

Interaction

In your view (In this case CScrollView), catch >OnMouseMove, OnVScroll and OnHScroll messages to interact with the ruler.

//Update mouse position on the ruler<BR>
void CDemoView::OnMouseMove(UINT nFlags, CPoint point)
{
    UpdateRulersInfo(RW_POSITION, GetScrollPosition(), point);
    ...
    //Update vertical scroll range and position of the ruler
    void CDemoView::OnVScroll(UINT nSBCode, UINT nPos, 
                                    CScrollBar* pScrollBar)
    {
        UpdateRulersInfo(RW_VSCROLL, GetScrollPosition());
        ...
        //Update horizontal scroll range and position of the ruler
        void CDemoView::OnHScroll(UINT nSBCode, 
                    UINT nPos, CScrollBar* pScrollBar)
        {
            UpdateRulersInfo(RW_HSCROLL, GetScrollPosition());

and finally

void CDemoView::UpdateRulersInfo(int nMessage, CPoint ScrollPos, CPoint Pos)
{
    stRULER_INFO pRulerInfo;
    pRulerInfo.uMessage = nMessage;
    pRulerInfo.ScrollPos = ScrollPos;
    pRulerInfo.Pos = Pos;
    pRulerInfo.DocSize = m_ImageSize;
    pRulerInfo.fZoomFactor = m_fZoomFactor;
    
    //CMainFrame in SDI
    ((CMainFrame*)GetParentFrame())->UpdateRulersInfo(pRulerInfo);
    //CChildFrame in MDI
    ((CChildFrame*)GetParentFrame())->UpdateRulersInfo(pRulerInfo);
}

Any way, take a look in the demo!

That's it!

Enjoy!

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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Comments and Discussions

 
BugCRulerSplitterWnd::CreateRulers bug Pinmemberralfsch25-Nov-13 20:15 
Generaluse GetSysColorBrush instead of CreateSolidBrush [modified] PinmemberRedFraggle13-Jun-09 9:22 
QuestionHow to use it in diffent map mode??? Pinmemberwp51_cn11-Feb-07 2:15 
GeneralGreat work! Pinmemberkellyonlyone12-Mar-06 23:42 
QuestionCan I add to a dialog? PinmemberSt.Devil8-Oct-05 17:01 
GeneralTotally Wrong Idea PinmemberMartial Spirit31-Jan-05 18:16 
GeneralRe: Totally Wrong Idea Pinmembersmjones24-Mar-05 13:04 
QuestionCan I add the rulers &quot;inside&quot; a splitter window? PinmemberNathan Yong25-Jan-05 16:08 
Generalbug: changing zoom doesn't refresh ruler windows PinmemberKeith Bussell13-Jan-05 12:32 
GeneralI tried to use your classes but something's wrong Pinmemberislobell8-May-04 0:22 
GeneralOh, the code finally appeals! Pinmemberxxxyyyzzz22-Dec-02 20:42 
GeneralRe: Oh, the code finally appeals! Pinsussfeier6-Aug-03 18:05 
GeneralGood GUI, Low Speed Pinmemberxuell0019-Dec-02 17:05 

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