ZoomTool Struct Reference

Inheritance diagram for ZoomTool:

Collaboration diagram for ZoomTool:

Public Member Functions
BOOL	getNewZoomRect (CRect &rcView, INT newZoom)
void	OnDrawOverlayOnCanvas (HDC hdc) override
void	OnButtonDown (BOOL bLeftButton, LONG x, LONG y, BOOL bDoubleClick) override
BOOL	OnButtonUp (BOOL bLeftButton, LONG &x, LONG &y) override
Public Member Functions inherited from ToolBase
	ToolBase ()
virtual	~ToolBase ()
virtual void	OnButtonDown (BOOL bLeftButton, LONG x, LONG y, BOOL bDoubleClick)
virtual BOOL	OnMouseMove (BOOL bLeftButton, LONG &x, LONG &y)
virtual BOOL	OnButtonUp (BOOL bLeftButton, LONG &x, LONG &y)
virtual void	OnDrawOverlayOnImage (HDC hdc)
virtual void	OnDrawOverlayOnCanvas (HDC hdc)
virtual void	OnSpecialTweak (BOOL bMinus)
virtual void	OnEndDraw (BOOL bCancel)
void	beginEvent ()
void	endEvent ()
void	reset ()

Public Attributes
BOOL	m_bZoomed = FALSE
Public Attributes inherited from ToolBase
HDC	m_hdc
COLORREF	m_fg
COLORREF	m_bg

Additional Inherited Members
Static Public Member Functions inherited from ToolBase
static ToolBase *	createToolObject (TOOLTYPE type)

Detailed Description

Definition at line 644 of file mouse.cpp.

Member Function Documentation

getNewZoomRect()

BOOL ZoomTool::getNewZoomRect	(	CRect &	rcView,
		INT	newZoom
	)

Definition at line 688 of file mouse.cpp.

{
    CPoint pt;
    ::GetCursorPos(&pt);
    canvasWindow.ScreenToClient(&pt);
 
    canvasWindow.getNewZoomRect(rcView, newZoom, pt);
 
    CRect rc;
    canvasWindow.GetImageRect(rc);
    canvasWindow.ImageToCanvas(rc);
 
    return rc.PtInRect(pt);
}

Referenced by OnButtonDown(), and OnDrawOverlayOnCanvas().

OnButtonDown()

void ZoomTool::OnButtonDown ( BOOL  bLeftButton, LONG  x, LONG  y, BOOL  bDoubleClick  )

inlineoverridevirtual

Reimplemented from ToolBase.

Definition at line 658 of file mouse.cpp.

    {
        INT newZoom, oldZoom = toolsModel.GetZoom();
        if (bLeftButton)
            newZoom = (oldZoom < MAX_ZOOM) ? (oldZoom * 2) : MIN_ZOOM;
        else
            newZoom = (oldZoom > MIN_ZOOM) ? (oldZoom / 2) : MAX_ZOOM;
 
        m_bZoomed = FALSE;
 
        if (oldZoom != newZoom)
        {
            CRect rcView;
            if (getNewZoomRect(rcView, newZoom))
            {
                canvasWindow.zoomTo(newZoom, rcView.left, rcView.top);
                m_bZoomed = TRUE;
            }
        }
    }

OnButtonUp()

BOOL ZoomTool::OnButtonUp ( BOOL  bLeftButton, LONG &  x, LONG &  y  )

inlineoverridevirtual

Reimplemented from ToolBase.

Definition at line 679 of file mouse.cpp.

    {
        if (m_bZoomed)
            toolsModel.SetActiveTool(toolsModel.GetOldActiveTool());
 
        return TRUE;
    }

OnDrawOverlayOnCanvas()

void ZoomTool::OnDrawOverlayOnCanvas ( HDC  hdc )

inlineoverridevirtual

Reimplemented from ToolBase.

Definition at line 650 of file mouse.cpp.

    {
        CRect rcView;
        INT oldZoom = toolsModel.GetZoom();
        if (oldZoom < MAX_ZOOM && getNewZoomRect(rcView, oldZoom * 2))
            DrawXorRect(hdc, &rcView);
    }

Member Data Documentation

m_bZoomed

BOOL ZoomTool::m_bZoomed = FALSE

Definition at line 646 of file mouse.cpp.

Referenced by OnButtonDown(), and OnButtonUp().

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The documentation for this struct was generated from the following file:

• base/applications/mspaint/mouse.cpp