/* ==========================================================================
CIconEdit
Author : Johan Rosengren, Abstrakt Mekanik AB
Date : 2004-03-09
Purpose : The class represents an editbox with an icon to the left
Description : The class sets the edit rect of the editbox, and adds a
CStatic derived control painting the icon to the left of
the text.
Usage : As a CEdit. The class can be instantiated both
dynamically and from a dialog template. The edit box
must have the ES_MULTILINE style set (as the edit rect
will not work otherwise). The icon can either be set as
an icon handle, with CIconEdit::SetIcon(HICON icon), or
directly from the application resources with
CIconEdit::SetIcon(UINT iconres). In the latter case,
the icon will be loaded and deleted by the class, in the
former, the caller must delete it.
Note that SetWindowPlacement will destroy the edit rect,
if the control needs to be moved or resized, MoveWindow
or SetWindowPos should be used instead.
========================================================================*/
#include "stdafx.h"
#include "IconEdit.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CIconEdit
CIconEdit::CIconEdit()
/*============================================================
Function : CIconEdit::CIconEdit
Description : constructor
Return : void
Parameters : none
Usage :
============================================================*/
{
m_internalIcon = NULL;
m_icon.m_hWnd = NULL;
}
CIconEdit::~CIconEdit()
/*============================================================
Function : CIconEdit::~CIconEdit
Description :
Return : destructor -
Parameters :
Usage :
============================================================*/
{
// Clean up
if( m_internalIcon )
::DestroyIcon( m_internalIcon );
}
BEGIN_MESSAGE_MAP(CIconEdit, CEdit)
ON_MESSAGE(WM_SETFONT, OnSetFont)
ON_WM_SIZE()
END_MESSAGE_MAP()
void CIconEdit::PreSubclassWindow()
/*============================================================
Function : CIconEdit::PreSubclassWindow
Description : This function is called before the control
is subclassed for a control on a dialog
template, and during creation for
dynamically created controls.
Return : void
Parameters :
Usage :
============================================================*/
{
// We must have a multiline edit
// to be able to set the edit rect
ASSERT( GetStyle() & ES_MULTILINE );
// We set the edit rect
Prepare();
}
/////////////////////////////////////////////////////////////////////////////
// CIconEdit implementation
void CIconEdit::SetIcon( HICON icon )
/*============================================================
Function : CIconEdit::SetIcon
Description : Sets a new icon and updates the control
Return : void
Parameters : HICON icon - Handle to the icon
Usage : The caller must destroy the icon
============================================================*/
{
// Update the icon control
m_icon.SetIcon( icon );
}
void CIconEdit::SetIcon( UINT iconres )
/*============================================================
Function : CIconEdit::SetIcon
Description : Sets a new icon and updates the control
Return : void
Parameters : UINT iconres - Resource id of the icon
Usage : The class will load and destroy the icon.
============================================================*/
{
if( !m_icon.m_hWnd )
{
// If the icon window doesn't exist,
// we create it
CRect editRect;
GetRect( &editRect );
CRect clientRect;
GetClientRect( &clientRect );
CRect iconRect( 0, 0, editRect.left, clientRect.Height() );
if(m_icon.m_hWnd==NULL)
m_icon.Create("", WS_CHILD | WS_VISIBLE, iconRect, this, 1 );
}
// If we already have an icon, we destroy it
if( m_internalIcon )
::DestroyIcon( m_internalIcon );
// Loading the new icon
m_internalIcon = ( HICON ) ::LoadImage( AfxGetResourceHandle(),
MAKEINTRESOURCE( iconres ),
IMAGE_ICON,
16,
16,
LR_DEFAULTCOLOR );
ASSERT( m_internalIcon != NULL );
// Update the icon control
m_icon.SetIcon( m_internalIcon );
}
/////////////////////////////////////////////////////////////////////////////
// CIconEdit implementation
void CIconEdit::Prepare()
/*============================================================
Function : CIconEdit::Prepare
Description : Sets the edit rect of the control
Return : void
Parameters : none
Usage : Internal function. Call as soon as the
edit rect needs to be (re)established
============================================================*/
{
// Creating the edit rect
int width = GetSystemMetrics( SM_CXSMICON );
CRect editRect;
GetRect( &editRect );
editRect.left += width + 6;
SetRect( &editRect );
}
LRESULT CIconEdit::OnSetFont( WPARAM wParam, LPARAM lParam )
/*============================================================
Function : CIconEdit::OnSetFont
Description : Mapped to WM_SETFONT
Return : LRESULT -
Parameters : WPARAM wParam - From Windows
LPARAM lParam - From Windows
Usage : Called from Windows
============================================================*/
{
DefWindowProc( WM_SETFONT, wParam, lParam );
// We reset the edit rect
Prepare();
return 0;
}
void CIconEdit::OnSize( UINT nType, int cx, int cy )
/*============================================================
Function : CIconEdit::OnSize
Description : Mapped to WM_SIZE
Return : void
Parameters : UINT nType - From Windows
int cx - From Windows
int cy - From Windows
Usage : Called from Windows
============================================================*/
{
CEdit::OnSize( nType, cx, cy );
// We reset the edit rect
Prepare();
}
/////////////////////////////////////////////////////////////////////////////
// CIconWnd
CIconWnd::CIconWnd()
/*============================================================
Function : CIconWnd::CIconWnd
Description : constructor
Return : void
Parameters :
Usage :
============================================================*/
{
m_icon = NULL;
}
CIconWnd::~CIconWnd()
/*============================================================
Function : CIconWnd::~CIconWnd
Description : destructor
Return : void
Parameters : none
Usage :
============================================================*/
{
}
BEGIN_MESSAGE_MAP(CIconWnd, CStatic)
ON_WM_PAINT()
ON_WM_ERASEBKGND()
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CIconWnd message handlers
void CIconWnd::OnPaint()
/*============================================================
Function : CIconWnd::OnPaint
Description : Mapped to WM_PAINT. Draws the icon with the
small icon size (regardless of original)
Return : void
Parameters : none
Usage : Called from Windows
============================================================*/
{
CPaintDC dc( this );
if( m_icon )
{
CRect rect;
GetClientRect( &rect );
// Clearing the background
dc.FillSolidRect( rect, dc.GetBkColor() );
// Drawing the icon
int width = GetSystemMetrics( SM_CXSMICON );
int height = GetSystemMetrics( SM_CYSMICON );
::DrawIconEx( dc.m_hDC, 1, 1, m_icon, width, height, 0, NULL, DI_NORMAL );
}
}
BOOL CIconWnd::OnEraseBkgnd( CDC* )
/*====================================
