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- // circ2ctl.cpp : Implementation of the CCirc2Ctrl OLE control class.
- //
- // This is a part of the Microsoft Foundation Classes C++ library.
- // Copyright (C) 1992-1995 Microsoft Corporation
- // All rights reserved.
- //
- // This source code is only intended as a supplement to the
- // Microsoft Foundation Classes Reference and related
- // electronic documentation provided with the library.
- // See these sources for detailed information regarding the
- // Microsoft Foundation Classes product.
-
- #include "stdafx.h"
- #include "circ2.h"
- #include "circ2ctl.h"
- #include "circ2ppg.h"
-
-
- #ifdef _DEBUG
- #undef THIS_FILE
- static char BASED_CODE THIS_FILE[] = __FILE__;
- #endif
-
-
- IMPLEMENT_DYNCREATE(CCirc2Ctrl, COleControl)
-
-
- /////////////////////////////////////////////////////////////////////////////
- // Message map
-
- BEGIN_MESSAGE_MAP(CCirc2Ctrl, COleControl)
- //{{AFX_MSG_MAP(CCirc2Ctrl)
- ON_WM_LBUTTONDOWN()
- ON_WM_LBUTTONDBLCLK()
- ON_WM_LBUTTONUP()
- ON_WM_SIZE()
- //}}AFX_MSG_MAP
- ON_OLEVERB(AFX_IDS_VERB_PROPERTIES, OnProperties)
- END_MESSAGE_MAP()
-
-
- /////////////////////////////////////////////////////////////////////////////
- // Dispatch map
-
- BEGIN_DISPATCH_MAP(CCirc2Ctrl, COleControl)
- //{{AFX_DISPATCH_MAP(CCirc2Ctrl)
- DISP_PROPERTY(CCirc2Ctrl, "FlashColor", m_flashColor, VT_COLOR)
- DISP_PROPERTY_NOTIFY(CCirc2Ctrl, "CircleShape", m_circleShape, OnCircleShapeChanged, VT_BOOL)
- DISP_PROPERTY_EX(CCirc2Ctrl, "CircleOffset", GetCircleOffset, SetCircleOffset, VT_I2)
- DISP_STOCKPROP_BACKCOLOR()
- //}}AFX_DISPATCH_MAP
- DISP_FUNCTION_ID(CCirc2Ctrl, "AboutBox", DISPID_ABOUTBOX, AboutBox, VT_EMPTY, VTS_NONE)
- END_DISPATCH_MAP()
-
-
- /////////////////////////////////////////////////////////////////////////////
- // Event map
-
- BEGIN_EVENT_MAP(CCirc2Ctrl, COleControl)
- //{{AFX_EVENT_MAP(CCirc2Ctrl)
- EVENT_CUSTOM("ClickIn", FireClickIn, VTS_XPOS_PIXELS VTS_YPOS_PIXELS)
- EVENT_CUSTOM("ClickOut", FireClickOut, VTS_NONE)
- //}}AFX_EVENT_MAP
- END_EVENT_MAP()
-
-
- /////////////////////////////////////////////////////////////////////////////
- // Property pages
-
- // TODO: Add more property pages as needed. Remember to increase the count!
- BEGIN_PROPPAGEIDS(CCirc2Ctrl, 1)
- PROPPAGEID(CCirc2PropPage::guid)
- END_PROPPAGEIDS(CCirc2Ctrl)
-
-
- /////////////////////////////////////////////////////////////////////////////
- // Initialize class factory and guid
-
- IMPLEMENT_OLECREATE_EX(CCirc2Ctrl, "CIRC2.Circ2Ctrl.1",
- 0x9dbafcca, 0x592f, 0x101b, 0x85, 0xce, 0x0, 0x60, 0x8c, 0xec, 0x29, 0x7b)
-
-
- /////////////////////////////////////////////////////////////////////////////
- // Type library ID and version
-
- IMPLEMENT_OLETYPELIB(CCirc2Ctrl, _tlid, _wVerMajor, _wVerMinor)
-
-
- /////////////////////////////////////////////////////////////////////////////
- // Interface IDs
-
- const IID BASED_CODE IID_DCirc2 =
- { 0x9dbafccb, 0x592f, 0x101b, { 0x85, 0xce, 0x0, 0x60, 0x8c, 0xec, 0x29, 0x7b } };
- const IID BASED_CODE IID_DCirc2Events =
- { 0x9dbafccc, 0x592f, 0x101b, { 0x85, 0xce, 0x0, 0x60, 0x8c, 0xec, 0x29, 0x7b } };
-
-
- /////////////////////////////////////////////////////////////////////////////
- // Control type information
-
- static const DWORD BASED_CODE _dwCirc2OleMisc =
- OLEMISC_ACTIVATEWHENVISIBLE |
- OLEMISC_SETCLIENTSITEFIRST |
- OLEMISC_INSIDEOUT |
- OLEMISC_CANTLINKINSIDE |
- OLEMISC_RECOMPOSEONRESIZE;
-
- IMPLEMENT_OLECTLTYPE(CCirc2Ctrl, IDS_CIRC2, _dwCirc2OleMisc)
-
-
- /////////////////////////////////////////////////////////////////////////////
- // CCirc2Ctrl::CCirc2CtrlFactory::UpdateRegistry -
- // Adds or removes system registry entries for CCirc2Ctrl
-
- BOOL CCirc2Ctrl::CCirc2CtrlFactory::UpdateRegistry(BOOL bRegister)
- {
- if (bRegister)
- return AfxOleRegisterControlClass(
- AfxGetInstanceHandle(),
- m_clsid,
- m_lpszProgID,
- IDS_CIRC2,
- IDB_CIRC2,
- FALSE, // Not insertable
- _dwCirc2OleMisc,
- _tlid,
- _wVerMajor,
- _wVerMinor);
- else
- return AfxOleUnregisterClass(m_clsid, m_lpszProgID);
- }
-
-
- /////////////////////////////////////////////////////////////////////////////
- // CCirc2Ctrl::CCirc2Ctrl - Constructor
-
- CCirc2Ctrl::CCirc2Ctrl()
- {
- InitializeIIDs(&IID_DCirc2, &IID_DCirc2Events);
-
- // TODO: Initialize your control's instance data here.
- }
-
-
- /////////////////////////////////////////////////////////////////////////////
- // CCirc2Ctrl::~CCirc2Ctrl - Destructor
-
- CCirc2Ctrl::~CCirc2Ctrl()
- {
- // TODO: Cleanup your control's instance data here.
- }
-
-
- /////////////////////////////////////////////////////////////////////////////
- // CCirc2Ctrl::OnDraw - Drawing function
-
- void CCirc2Ctrl::OnDraw(
- CDC* pdc, const CRect& rcBounds, const CRect&)
- {
- CBrush* pOldBrush;
- CBrush bkBrush(TranslateColor(GetBackColor()));
- CPen* pOldPen;
- CRect rc = rcBounds;
-
- // Paint the background using the BackColor property
- pdc->FillRect(rcBounds, &bkBrush);
-
- // Draw the ellipse using the BackColor property and a black pen
- GetDrawRect(&rc);
- pOldBrush = pdc->SelectObject(&bkBrush);
- pOldPen = (CPen*)pdc->SelectStockObject(BLACK_PEN);
- pdc->Ellipse(rc);
- pdc->SelectObject(pOldPen);
- pdc->SelectObject(pOldBrush);
- }
-
-
- /////////////////////////////////////////////////////////////////////////////
- // CCirc2Ctrl::DoPropExchange - Persistence support
-
- void CCirc2Ctrl::DoPropExchange(CPropExchange* pPX)
- {
- ExchangeVersion(pPX, MAKELONG(_wVerMinor, _wVerMajor));
- COleControl::DoPropExchange(pPX);
-
- PX_Bool(pPX, _T("CircleShape"), m_circleShape, TRUE);
- PX_Short(pPX, _T("CircleOffset"), m_circleOffset, 0);
- PX_Long(pPX, _T("FlashColor"), (long &)m_flashColor, RGB(0xFF, 0x00, 0x00));
- }
-
-
- /////////////////////////////////////////////////////////////////////////////
- // CCirc2Ctrl::OnResetState - Reset control to default state
-
- void CCirc2Ctrl::OnResetState()
- {
- COleControl::OnResetState(); // Resets defaults found in DoPropExchange
-
- // TODO: Reset any other control state here.
- }
-
-
- /////////////////////////////////////////////////////////////////////////////
- // CCirc2Ctrl::AboutBox - Display an "About" box to the user
-
- void CCirc2Ctrl::AboutBox()
- {
- CDialog dlgAbout(IDD_ABOUTBOX_CIRC2);
- dlgAbout.DoModal();
- }
-
-
- /////////////////////////////////////////////////////////////////////////////
- // CCirc2Ctrl message handlers
-
-
- void CCirc2Ctrl::OnCircleShapeChanged()
- {
- SetModifiedFlag();
-
- // force the control to redraw itself
- InvalidateControl();
-
- // reset the circle offset, if necessary
- if (m_circleShape)
- SetCircleOffset(0);
- }
-
-
- void CCirc2Ctrl::GetDrawRect(CRect* rc)
- {
- if (m_circleShape)
- {
- int cx = rc->right - rc->left;
- int cy = rc->bottom - rc->top;
-
- if (cx > cy)
- {
- rc->left += (cx - cy) / 2;
- rc->right = rc->left + cy;
-
- // offset circle in bounding rect
- rc->left += m_circleOffset;
- rc->right += m_circleOffset;
- }
- else
- {
- rc->top += (cy - cx) / 2;
- rc->bottom = rc->top + cx;
-
- // offset circle in bounding rect
- rc->bottom -= m_circleOffset;
- rc->top -= m_circleOffset;
- }
- }
- }
-
-
- short CCirc2Ctrl::GetCircleOffset()
- {
- return m_circleOffset;
- }
-
-
- void CCirc2Ctrl::SetCircleOffset(short nNewValue)
- {
- // Validate the specified offset value
- if ((m_circleOffset != nNewValue) && m_circleShape && InBounds(nNewValue))
- {
- m_circleOffset = nNewValue;
- SetModifiedFlag();
- InvalidateControl();
- }
- }
-
-
- BOOL CCirc2Ctrl::InBounds(short nOffset)
- {
- int diameter;
- int length;
- int cx;
- int cy;
-
- GetControlSize(&cx, &cy);
-
- if (cx > cy)
- {
- length = cx;
- diameter = cy;
- }
- else
- {
- length = cy;
- diameter = cx;
- }
- if (nOffset < 0)
- nOffset = (short) -nOffset;
- return (diameter / 2 + nOffset) <= (length / 2);
- }
-
-
- void CCirc2Ctrl::OnLButtonDown(UINT nFlags, CPoint point)
- {
- CDC* pdc;
-
- // Flash the color of the control if within the ellipse.
- if (InCircle(point))
- {
- pdc = GetDC();
- FlashColor(pdc);
- ReleaseDC(pdc);
-
- // Fire the ClickIn event
- FireClickIn(point.x, point.y);
- }
- else
- // Fire the ClickOut event
- FireClickOut();
-
- COleControl::OnLButtonDown(nFlags, point);
- }
-
-
- void CCirc2Ctrl::OnLButtonDblClk(UINT nFlags, CPoint point)
- {
- CDC* pdc;
-
- // Flash the color of the control if within the ellipse.
- if (InCircle(point))
- {
- pdc = GetDC();
- FlashColor(pdc);
- ReleaseDC(pdc);
- }
-
- COleControl::OnLButtonDblClk(nFlags, point);
- }
-
-
- void CCirc2Ctrl::OnLButtonUp(UINT nFlags, CPoint point)
- {
- // Redraw the control.
- if (InCircle(point))
- InvalidateControl();
-
- COleControl::OnLButtonUp(nFlags, point);
- }
-
-
- BOOL CCirc2Ctrl::InCircle(CPoint& point)
- {
- CRect rc;
- GetClientRect(rc);
- GetDrawRect(&rc);
-
- // Determine radii
- double a = (rc.right - rc.left) / 2;
- double b = (rc.bottom - rc.top) / 2;
-
- // Determine x, y
- double x = point.x - (rc.left + rc.right) / 2;
- double y = point.y - (rc.top + rc.bottom) / 2;
-
- // Apply ellipse formula
- return ((x * x) / (a * a) + (y * y) / (b * b) <= 1);
- }
-
-
- void CCirc2Ctrl::FlashColor(CDC* pdc)
- {
- CBrush* pOldBrush;
- CBrush flashBrush(TranslateColor(m_flashColor));
- CPen* pOldPen;
- CRect rc;
-
- GetClientRect(rc);
- GetDrawRect(&rc);
- pOldBrush = pdc->SelectObject(&flashBrush);
- pOldPen = (CPen*)pdc->SelectStockObject(BLACK_PEN);
- pdc->Ellipse(rc);
- pdc->SelectObject(pOldPen);
- pdc->SelectObject(pOldBrush);
- }
-
-
- BOOL CCirc2Ctrl::OnMapPropertyToPage(DISPID dispid, LPCLSID lpclsid,
- BOOL* pbPageOptional)
- {
- switch(dispid)
- {
- case dispidFlashColor:
- *lpclsid = CLSID_CColorPropPage;
- *pbPageOptional = TRUE;
- return TRUE;
- }
- return COleControl::OnMapPropertyToPage(dispid, lpclsid, pbPageOptional);
- }
-
- void CCirc2Ctrl::OnSize(UINT nType, int cx, int cy)
- {
- COleControl::OnSize(nType, cx, cy);
-
- // If circle shape is true & cicrle does not fit in new size, reset the offset
- if (m_circleShape && !InBounds(GetCircleOffset()))
- SetCircleOffset(0);
- }
-