www.pudn.com > Switcher_demo.zip > SwitcherWnd.cpp
// SwitcherWnd.cpp
//
// Programmed by: JIMMY BRUSH (Kathy007@email.msn.com)
//
// Legal:
//
// THIS CODE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.
// You may use and distribute this code provided that you do not
// remove this title header and that you do not charge money for
// it. If you want to update the code, feel free to do so, as long
// as you *mark your changes* in code AND in the revision log below
// (and send it to me ;)
//
//
//
// Version: 1.0 revision 1
//
// Revision Log:
//
// SUN MAR 14 1999 - JIMMY BRUSH - Finished Writing version 1.0
// MON MAR 15 1999 - JIMMY BRUSH - Fixed RemoveButton to correctly decrement selected button
// Added CMemDC by Keith Rule
// Fixed up Animation a bit
//
//
//
// In the next version \ Wish List:
//
// 1. Tool Tips in CSwitcherButton
// 2. Support for more buttons than can display (with the up/down button at the right)
#include "stdafx.h"
#include "SwitcherButton.h"
#include "SwitcherWnd.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define DEFAULTWIDTH 130
#define DEFAULTHEIGHT 25
#define MINWIDTH 24
/////////////////////////////////////////////////////////////////////////////
// CSwitcherWnd
CSwitcherWnd::CSwitcherWnd()
{
m_iButtonWidth = DEFAULTWIDTH;
m_iNextButtonStart = 0;
m_iSelectedButton = -1;
}
CSwitcherWnd::~CSwitcherWnd()
{
}
BEGIN_MESSAGE_MAP(CSwitcherWnd, CWnd)
//{{AFX_MSG_MAP(CSwitcherWnd)
ON_WM_DESTROY()
ON_WM_PAINT()
ON_WM_SIZE()
ON_WM_LBUTTONUP()
//}}AFX_MSG_MAP
ON_MESSAGE(SWM_SELCHANGE, OnSelChange)
ON_MESSAGE(SWM_UNSELECT, OnUnselect)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CSwitcherWnd message handlers
BOOL CSwitcherWnd::DoCreate(CWnd *parent, int x, int y, int cx, int cy, CString text)
{
m_wndParent = parent;
WNDCLASS myclass;
myclass.style = CS_HREDRAW|CS_VREDRAW|CS_PARENTDC;
myclass.lpfnWndProc = AfxWndProc;
myclass.cbClsExtra = 0;
myclass.cbWndExtra = 0;
myclass.hInstance = AfxGetInstanceHandle();
myclass.hIcon = NULL;
myclass.hCursor = LoadCursor(NULL, IDC_ARROW);
myclass.hbrBackground = NULL;
myclass.lpszMenuName = NULL;
myclass.lpszClassName = "SwitcherWndClass";
AfxRegisterClass(&myclass);
return Create("SwitcherWndClass", text, WS_CHILD|WS_VISIBLE, CRect(x,y,cx+x,cy+y), parent, 0);
}
BOOL CSwitcherWnd::AddButton(CString title, HICON icon)
{
CRect rect;
GetClientRect(&rect);
CSwitcherButton* newbutton = new CSwitcherButton();
newbutton->m_iIcon = icon;
newbutton->m_iID = m_Buttons.GetSize();
if (!newbutton->DoCreate(this, m_iNextButtonStart, rect.top, m_iButtonWidth, DEFAULTHEIGHT, title))
return FALSE;
m_Buttons.Add((void*)newbutton);
m_iNextButtonStart += m_iButtonWidth + 3;
if (m_iNextButtonStart-3 > rect.Width())
{
// this loop makes a neat little animation
int newsize = (rect.Width() / (m_Buttons.GetSize())) - 3;
register int y;
for (y = m_iButtonWidth; y >= newsize; y-=3)
{
ResizeButtons(y);
Sleep(15);
}
if (y != newsize) ResizeButtons(newsize);
if (m_iButtonWidth < MINWIDTH)
{
// the smallest allowable button size has been reached...
// in this version, we can't handle this
ASSERT(0);
return FALSE;
}
}
return TRUE;
}
void CSwitcherWnd::OnDestroy()
{
RemoveAll();
CWnd::OnDestroy();
}
void CSwitcherWnd::RemoveAll()
{
// remove the first button over and over
int size = m_Buttons.GetSize();
for (int x = 1; x <= size; x++)
{
CSwitcherButton* btn = (CSwitcherButton*)m_Buttons.GetAt(0);
delete btn;
m_Buttons.RemoveAt(0);
}
m_iNextButtonStart = 0;
m_iButtonWidth = DEFAULTWIDTH;
m_iSelectedButton = -1;
}
void CSwitcherWnd::ResizeButtons(int NewSize)
{
if (NewSize < MINWIDTH || NewSize > DEFAULTWIDTH)
return;
m_iButtonWidth = NewSize;
m_iNextButtonStart = 0;
for (register int x = 0; x < m_Buttons.GetSize(); x++)
{
CSwitcherButton* btn = (CSwitcherButton*)m_Buttons.GetAt(x);
btn->SetWindowPos(NULL, m_iNextButtonStart, 0, m_iButtonWidth, DEFAULTHEIGHT, SWP_NOZORDER|SWP_NOCOPYBITS);
m_iNextButtonStart += m_iButtonWidth + 3;
}
RedrawWindow();
}
void CSwitcherWnd::OnPaint()
{
CPaintDC dc(this); // device context for painting
// simply paint it the window bg color
CRect rect;
GetClientRect(&rect);
CBrush brush;
brush.CreateSolidBrush(::GetSysColor(COLOR_3DFACE));
dc.FillRect(&rect, &brush);
brush.DeleteObject();
}
void CSwitcherWnd::OnSize(UINT nType, int cx, int cy)
{
CWnd::OnSize(nType, cx, cy);
if (m_Buttons.GetSize() == 0)
return;
CRect rect;
GetClientRect(&rect);
int newsize = (rect.Width() / (m_Buttons.GetSize())) - 3;
if (newsize <= DEFAULTWIDTH && m_iButtonWidth != newsize)
ResizeButtons(newsize);
}
CSwitcherButton* CSwitcherWnd::GetButtonFromID(int id)
{
return (CSwitcherButton*)m_Buttons.GetAt(id);
}
LRESULT CSwitcherWnd::OnSelChange(WPARAM wp, LPARAM)
{
// sent when a button gets clicked
CSwitcherButton* newsel = (CSwitcherButton*)wp;
if (m_iSelectedButton > -1)
GetButtonFromID(m_iSelectedButton)->Unselect();
m_iSelectedButton = newsel->m_iID;
return 1;
}
void CSwitcherWnd::OnLButtonUp(UINT nFlags, CPoint point)
{
CWnd::OnLButtonUp(nFlags, point);
if (m_iSelectedButton > -1)
GetButtonFromID(m_iSelectedButton)->Unselect();
m_iSelectedButton = -1;
}
LRESULT CSwitcherWnd::OnUnselect(WPARAM, LPARAM)
{
// sent when a button gets clicked when its selected
// (which unselects it)
m_iSelectedButton = -1;
return 1;
}
BOOL CSwitcherWnd::RemoveButton(int index)
{
if (index >= m_Buttons.GetSize() || index < 0)
{
ASSERT(0); // out of range
return FALSE;
}
if (m_iSelectedButton == index)
m_iSelectedButton = -1;
if (m_iSelectedButton > index)
m_iSelectedButton -= 1;
delete GetButtonFromID(index);
m_Buttons.RemoveAt(index);
for (register int x = index; x < m_Buttons.GetSize(); x++)
GetButtonFromID(x)->m_iID -= 1;
m_iNextButtonStart -= m_iButtonWidth + 3;
if (m_iButtonWidth != DEFAULTWIDTH)
{
// do that funky animation thing
CRect rect;
GetClientRect(&rect);
int newsize = (rect.Width() / (m_Buttons.GetSize())) - 3;
if (newsize > DEFAULTWIDTH) newsize = DEFAULTWIDTH;
if (newsize > m_iButtonWidth)
{
register int y;
for (y = m_iButtonWidth; y <= newsize; y+=3)
{
ResizeButtons(y);
Sleep(15);
}
if (y != newsize) ResizeButtons(newsize);
}
}
ResizeButtons(m_iButtonWidth);
return TRUE;
}
// icon can be NULL to not search the icons, just text
int CSwitcherWnd::FindButton(CString text, HICON icon, int StartAt)
{
if (StartAt < 0 || StartAt >= m_Buttons.GetSize())
{
ASSERT(0); // out of range
return -1;
}
for (register int x = StartAt; x < m_Buttons.GetSize(); x++)
{
CSwitcherButton* btn = GetButtonFromID(x);
CString title;
btn->GetWindowText(title);
if (icon == NULL)
{
if (title == text)
return x;
}
else
{
if (title == text && icon == btn->m_iIcon)
return x;
}
}
return -1;
}
int CSwitcherWnd::GetSel()
{
return m_iSelectedButton;
}
BOOL CSwitcherWnd::SetSel(int num)
{
if (num < 0 || num >= m_Buttons.GetSize())
{
ASSERT(0); // out of range
return FALSE;
}
if (m_iSelectedButton > -1)
GetButtonFromID(m_iSelectedButton)->Unselect();
GetButtonFromID(num)->Select();
m_iSelectedButton = num;
return TRUE;
}
CString CSwitcherWnd::GetButtonText(int id)
{
if (id < 0 || id >= m_Buttons.GetSize())
{
ASSERT(0); // out of range
return "";
}
CString retval = "";
GetButtonFromID(id)->GetWindowText(retval);
return retval;
}
HICON CSwitcherWnd::GetButtonIcon(int id)
{
if (id < 0 || id >= m_Buttons.GetSize())
{
ASSERT(0); // out of range
return NULL;
}
return GetButtonFromID(id)->m_iIcon;
}
// note that this is 1 greater than the last button ID
int CSwitcherWnd::GetNumButtons()
{
return m_Buttons.GetSize();
}
BOOL CSwitcherWnd::ModifyButton(int index, CString text, HICON icon)
{
if (index < 0 || index >= m_Buttons.GetSize())
{
ASSERT(0); // out of range
return NULL;
}
CSwitcherButton* btn = GetButtonFromID(index);
btn->SetWindowText(text);
btn->m_iIcon = icon;
btn->Refresh();
return TRUE;
}