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wxWidgets/samples/statbar/statbar.cpp
Vadim Zeitlin 2dcd83af91 very minor cleanup 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38638 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2006-04-09 11:00:45 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: statbar.cpp
// Purpose: wxStatusBar sample
// Author: Vadim Zeitlin
// Modified by:
// Created: 04.02.00
// RCS-ID: $Id$
// Copyright: (c) Vadim Zeitlin
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if !wxUSE_STATUSBAR
#error "You need to set wxUSE_STATUSBAR to 1 to compile this sample"
#endif // wxUSE_STATUSBAR
// for all others, include the necessary headers
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/log.h"
#include "wx/frame.h"
#include "wx/statusbr.h"
#include "wx/timer.h"
#include "wx/checkbox.h"
#include "wx/statbmp.h"
#include "wx/menu.h"
#include "wx/msgdlg.h"
#include "wx/textdlg.h"
#include "wx/sizer.h"
#include "wx/stattext.h"
#include "wx/bmpbuttn.h"
#include "wx/dcmemory.h"
#endif
#include "wx/datetime.h"
#include "wx/numdlg.h"
// define this for the platforms which don't support wxBitmapButton (such as
// Motif), else a wxBitmapButton will be used
#ifdef __WXMOTIF__
//#define USE_MDI_PARENT_FRAME 1
#ifdef USE_MDI_PARENT_FRAME
#include "wx/mdi.h"
#endif // USE_MDI_PARENT_FRAME
#define USE_STATIC_BITMAP
#endif
// ----------------------------------------------------------------------------
// resources
// ----------------------------------------------------------------------------
#ifdef USE_STATIC_BITMAP
#include "green.xpm"
#include "red.xpm"
#endif // USE_STATIC_BITMAP
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// Define a new application type, each program should derive a class from wxApp
class MyApp : public wxApp
{
public:
// override base class virtuals
// ----------------------------
// this one is called on application startup and is a good place for the app
// initialization (doing it here and not in the ctor allows to have an error
// return: if OnInit() returns false, the application terminates)
virtual bool OnInit();
};
// A custom status bar which contains controls, icons &c
class MyStatusBar : public wxStatusBar
{
public:
MyStatusBar(wxWindow *parent);
virtual ~MyStatusBar();
void UpdateClock();
// event handlers
#if wxUSE_TIMER
void OnTimer(wxTimerEvent& WXUNUSED(event)) { UpdateClock(); }
#endif
void OnSize(wxSizeEvent& event);
void OnToggleClock(wxCommandEvent& event);
void OnButton(wxCommandEvent& event);
private:
// toggle the state of the status bar controls
void DoToggle();
wxBitmap CreateBitmapForButton(bool on = false);
enum
{
Field_Text,
Field_Checkbox,
Field_Bitmap,
Field_Clock,
Field_Max
};
#if wxUSE_TIMER
wxTimer m_timer;
#endif
#if wxUSE_CHECKBOX
wxCheckBox *m_checkbox;
#endif
#ifdef USE_STATIC_BITMAP
wxStaticBitmap *m_statbmp;
#else
wxBitmapButton *m_statbmp;
#endif
DECLARE_EVENT_TABLE()
};
// Define a new frame type: this is going to be our main frame
class MyFrame : public wxFrame
{
public:
// ctor(s)
MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
#ifdef USE_MDI_PARENT_FRAME
class MyFrame : public wxMDIParentFrame
#else
virtual ~MyFrame();
#endif
// event handlers (these functions should _not_ be virtual)
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
void OnSetStatusFields(wxCommandEvent& event);
void OnRecreateStatusBar(wxCommandEvent& event);
void OnSetStyleNormal(wxCommandEvent& event);
void OnSetStyleFlat(wxCommandEvent& event);
void OnSetStyleRaised(wxCommandEvent& event);
private:
enum StatBarKind
{
StatBar_Default,
StatBar_Custom,
StatBar_Max
} m_statbarKind;
void OnUpdateSetStatusFields(wxUpdateUIEvent& event);
void OnUpdateStatusBarToggle(wxUpdateUIEvent& event);
void OnUpdateSetStyleNormal(wxUpdateUIEvent& event);
void OnUpdateSetStyleFlat(wxUpdateUIEvent& event);
void OnUpdateSetStyleRaised(wxUpdateUIEvent& event);
void OnStatusBarToggle(wxCommandEvent& event);
void DoCreateStatusBar(StatBarKind kind);
void ApplyStyle();
wxStatusBar *m_statbarDefault;
MyStatusBar *m_statbarCustom;
int m_statbarStyle;
// any class wishing to process wxWidgets events must use this macro
DECLARE_EVENT_TABLE()
};
// Our about dialog ith its status bar
class MyAboutDialog : public wxDialog
{
public:
MyAboutDialog(wxWindow *parent);
};
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// IDs for the controls and the menu commands
enum
{
// menu items
StatusBar_Quit = 1,
StatusBar_SetFields,
StatusBar_Recreate,
StatusBar_About,
StatusBar_Toggle,
StatusBar_Checkbox = 1000,
StatusBar_SetStyle,
StatusBar_SetStyleNormal,
StatusBar_SetStyleFlat,
StatusBar_SetStyleRaised
};
static const int BITMAP_SIZE_X = 32;
static const int BITMAP_SIZE_Y = 15;
// ----------------------------------------------------------------------------
// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------
// the event tables connect the wxWidgets events with the functions (event
// handlers) which process them. It can be also done at run-time, but for the
// simple menu events like this the static method is much simpler.
#ifdef USE_MDI_PARENT_FRAME
BEGIN_EVENT_TABLE(MyFrame, wxMDIParentFrame)
#else
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
#endif
EVT_MENU(StatusBar_Quit, MyFrame::OnQuit)
EVT_MENU(StatusBar_SetFields, MyFrame::OnSetStatusFields)
EVT_MENU(StatusBar_Recreate, MyFrame::OnRecreateStatusBar)
EVT_MENU(StatusBar_About, MyFrame::OnAbout)
EVT_MENU(StatusBar_Toggle, MyFrame::OnStatusBarToggle)
EVT_MENU(StatusBar_SetStyleNormal, MyFrame::OnSetStyleNormal)
EVT_MENU(StatusBar_SetStyleFlat, MyFrame::OnSetStyleFlat)
EVT_MENU(StatusBar_SetStyleRaised, MyFrame::OnSetStyleRaised)
EVT_UPDATE_UI(StatusBar_Toggle, MyFrame::OnUpdateStatusBarToggle)
EVT_UPDATE_UI(StatusBar_SetFields, MyFrame::OnUpdateSetStatusFields)
EVT_UPDATE_UI(StatusBar_SetStyleNormal, MyFrame::OnUpdateSetStyleNormal)
EVT_UPDATE_UI(StatusBar_SetStyleFlat, MyFrame::OnUpdateSetStyleFlat)
EVT_UPDATE_UI(StatusBar_SetStyleRaised, MyFrame::OnUpdateSetStyleRaised)
END_EVENT_TABLE()
BEGIN_EVENT_TABLE(MyStatusBar, wxStatusBar)
EVT_SIZE(MyStatusBar::OnSize)
#if wxUSE_CHECKBOX
EVT_CHECKBOX(StatusBar_Checkbox, MyStatusBar::OnToggleClock)
#endif
EVT_BUTTON(wxID_ANY, MyStatusBar::OnButton)
#if wxUSE_TIMER
EVT_TIMER(wxID_ANY, MyStatusBar::OnTimer)
#endif
END_EVENT_TABLE()
// Create a new application object: this macro will allow wxWidgets to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also declares the accessor function
// wxGetApp() which will return the reference of the right type (i.e. MyApp and
// not wxApp)
IMPLEMENT_APP(MyApp)
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// the application class
// ----------------------------------------------------------------------------
// `Main program' equivalent: the program execution "starts" here
bool MyApp::OnInit()
{
// create the main application window
MyFrame *frame = new MyFrame(_T("wxStatusBar sample"),
wxPoint(50, 50), wxSize(450, 340));
// and show it (the frames, unlike simple controls, are not shown when
// created initially)
frame->Show(true);
// success: wxApp::OnRun() will be called which will enter the main message
// loop and the application will run. If we returned 'false' here, the
// application would exit immediately.
return true;
}
// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------
// frame constructor
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
#ifdef USE_MDI_PARENT_FRAME
: wxMDIParentFrame((wxWindow *)NULL, wxID_ANY, title, pos, size)
#else
: wxFrame((wxWindow *)NULL, wxID_ANY, title, pos, size)
#endif
{
m_statbarDefault = NULL;
m_statbarCustom = NULL;
m_statbarStyle = wxSB_NORMAL;
#ifdef __WXMAC__
// we need this in order to allow the about menu relocation, since ABOUT is
// not the default id of the about menu
wxApp::s_macAboutMenuItemId = StatusBar_About;
#endif
// create a menu bar
wxMenu *menuFile = new wxMenu;
menuFile->Append(StatusBar_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
wxMenu *statbarMenu = new wxMenu;
statbarMenu->Append(StatusBar_SetFields, _T("&Set field count\tCtrl-C"),
_T("Set the number of status bar fields"));
statbarMenu->Append(StatusBar_Toggle, _T("&Toggle Status Bar"),
_T("Toggle the status bar display"), true);
statbarMenu->Append(StatusBar_Recreate, _T("&Recreate\tCtrl-R"),
_T("Toggle status bar format"));
wxMenu *statbarStyleMenu = new wxMenu;
statbarStyleMenu->Append(StatusBar_SetStyleNormal, _T("&Normal"), _T("Sets the style of the first field to normal (sunken) look"), true);
statbarStyleMenu->Append(StatusBar_SetStyleFlat, _T("&Flat"), _T("Sets the style of the first field to flat look"), true);
statbarStyleMenu->Append(StatusBar_SetStyleRaised, _T("&Raised"), _T("Sets the style of the first field to raised look"), true);
statbarMenu->Append(StatusBar_SetStyle, _T("Field style"), statbarStyleMenu);
wxMenu *helpMenu = new wxMenu;
helpMenu->Append(StatusBar_About, _T("&About...\tCtrl-A"), _T("Show about dialog"));
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar();
menuBar->Append(menuFile, _T("&File"));
menuBar->Append(statbarMenu, _T("&Status bar"));
menuBar->Append(helpMenu, _T("&Help"));
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
// create default status bar to start with
CreateStatusBar(2);
m_statbarKind = StatBar_Default;
SetStatusText(_T("Welcome to wxWidgets!"));
m_statbarDefault = GetStatusBar();
}
MyFrame::~MyFrame()
{
SetStatusBar(NULL);
delete m_statbarDefault;
delete m_statbarCustom;
}
void MyFrame::DoCreateStatusBar(MyFrame::StatBarKind kind)
{
wxStatusBar *statbarOld = GetStatusBar();
if ( statbarOld )
{
statbarOld->Hide();
}
switch ( kind )
{
case StatBar_Default:
SetStatusBar(m_statbarDefault);
break;
case StatBar_Custom:
if ( !m_statbarCustom )
{
m_statbarCustom = new MyStatusBar(this);
}
SetStatusBar(m_statbarCustom);
break;
default:
wxFAIL_MSG(wxT("unknown stat bar kind"));
}
ApplyStyle();
GetStatusBar()->Show();
PositionStatusBar();
m_statbarKind = kind;
}
void MyFrame::OnUpdateSetStatusFields(wxUpdateUIEvent& event)
{
// only allow the settings of the number of status fields for the default
// status bar
wxStatusBar *sb = GetStatusBar();
event.Enable(sb == m_statbarDefault);
}
// event handlers
void MyFrame::OnSetStatusFields(wxCommandEvent& WXUNUSED(event))
{
wxStatusBar *sb = GetStatusBar();
long nFields = wxGetNumberFromUser
(
_T("Select the number of fields in the status bar"),
_T("Fields:"),
_T("wxWidgets statusbar sample"),
sb->GetFieldsCount(),
1, 5,
this
);
// we don't check if the number changed at all on purpose: calling
// SetFieldsCount() with the same number of fields should be ok
if ( nFields != -1 )
{
static const int widthsFor2Fields[] = { 200, -1 };
static const int widthsFor3Fields[] = { -1, -2, -1 };
static const int widthsFor4Fields[] = { 100, -1, 100, -2, 100 };
static const int *widthsAll[] =
{
NULL, // 1 field: default
widthsFor2Fields, // 2 fields: 1 fixed, 1 var
widthsFor3Fields, // 3 fields: 3 var
widthsFor4Fields, // 4 fields: 3 fixed, 2 vars
NULL // 5 fields: default (all have same width)
};
const int * const widths = widthsAll[nFields - 1];
sb->SetFieldsCount(nFields, widths);
wxString s;
for ( long n = 0; n < nFields; n++ )
{
if ( widths )
{
if ( widths[n] > 0 )
s.Printf(_T("fixed (%d)"), widths[n]);
else
s.Printf(_T("variable (*%d)"), -widths[n]);
}
else
{
s = _T("default");
}
SetStatusText(s, n);
}
}
else
{
wxLogStatus(this, wxT("Cancelled"));
}
}
void MyFrame::OnUpdateStatusBarToggle(wxUpdateUIEvent& event)
{
event.Check(GetStatusBar() != NULL);
}
void MyFrame::OnStatusBarToggle(wxCommandEvent& WXUNUSED(event))
{
wxStatusBar *statbarOld = GetStatusBar();
if ( statbarOld )
{
statbarOld->Hide();
SetStatusBar(NULL);
}
else
{
DoCreateStatusBar(m_statbarKind);
}
}
void MyFrame::OnRecreateStatusBar(wxCommandEvent& WXUNUSED(event))
{
DoCreateStatusBar(m_statbarKind == StatBar_Custom ? StatBar_Default
: StatBar_Custom);
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// true is to force the frame to close
Close(true);
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
MyAboutDialog dlg(this);
dlg.ShowModal();
}
void MyFrame::OnUpdateSetStyleNormal(wxUpdateUIEvent &event)
{
event.Check(m_statbarStyle == wxSB_NORMAL);
}
void MyFrame::OnUpdateSetStyleFlat(wxUpdateUIEvent &event)
{
event.Check(m_statbarStyle == wxSB_FLAT);
}
void MyFrame::OnUpdateSetStyleRaised(wxUpdateUIEvent &event)
{
event.Check(m_statbarStyle == wxSB_RAISED);
}
void MyFrame::OnSetStyleNormal(wxCommandEvent & WXUNUSED(event))
{
m_statbarStyle = wxSB_NORMAL;
ApplyStyle();
}
void MyFrame::OnSetStyleFlat(wxCommandEvent & WXUNUSED(event))
{
m_statbarStyle = wxSB_FLAT;
ApplyStyle();
}
void MyFrame::OnSetStyleRaised(wxCommandEvent & WXUNUSED(event))
{
m_statbarStyle = wxSB_RAISED;
ApplyStyle();
}
void MyFrame::ApplyStyle()
{
wxStatusBar *sb = GetStatusBar();
int fields = sb->GetFieldsCount();
int *styles = new int[fields];
for (int i = 1; i < fields; i++)
styles[i] = wxSB_NORMAL;
styles[0] = m_statbarStyle;
sb->SetStatusStyles(fields, styles);
delete [] styles;
}
// ----------------------------------------------------------------------------
// MyAboutDialog
// ----------------------------------------------------------------------------
MyAboutDialog::MyAboutDialog(wxWindow *parent)
: wxDialog(parent, wxID_ANY, wxString(_T("About statbar")),
wxDefaultPosition, wxDefaultSize,
wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
{
wxStaticText *text = new wxStaticText(this, wxID_ANY,
_T("wxStatusBar sample\n")
_T("(c) 2000 Vadim Zeitlin"));
wxButton *btn = new wxButton(this, wxID_OK, _T("&Close"));
// create the top status bar without the size grip (default style),
// otherwise it looks weird
wxStatusBar *statbarTop = new wxStatusBar(this, wxID_ANY, 0);
statbarTop->SetFieldsCount(3);
statbarTop->SetStatusText(_T("This is a top status bar"), 0);
statbarTop->SetStatusText(_T("in a dialog"), 1);
statbarTop->SetStatusText(_T("Great, isn't it?"), 2);
wxStatusBar *statbarBottom = new wxStatusBar(this, wxID_ANY);
statbarBottom->SetFieldsCount(2);
statbarBottom->SetStatusText(_T("This is a bottom status bar"), 0);
statbarBottom->SetStatusText(_T("in a dialog"), 1);
wxBoxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
sizerTop->Add(statbarTop, 0, wxGROW);
sizerTop->Add(-1, 10, 1, wxGROW);
sizerTop->Add(text, 0, wxCENTRE | wxRIGHT | wxLEFT, 20);
sizerTop->Add(-1, 10, 1, wxGROW);
sizerTop->Add(btn, 0, wxCENTRE | wxRIGHT | wxLEFT, 20);
sizerTop->Add(-1, 10, 1, wxGROW);
sizerTop->Add(statbarBottom, 0, wxGROW);
SetSizer(sizerTop);
sizerTop->Fit(this);
sizerTop->SetSizeHints(this);
}
// ----------------------------------------------------------------------------
// MyStatusBar
// ----------------------------------------------------------------------------
#ifdef __VISUALC__
// 'this' : used in base member initializer list -- so what??
#pragma warning(disable: 4355)
#endif
MyStatusBar::MyStatusBar(wxWindow *parent)
: wxStatusBar(parent, wxID_ANY)
#if wxUSE_TIMER
, m_timer(this)
#endif
#if wxUSE_CHECKBOX
, m_checkbox(NULL)
#endif
{
static const int widths[Field_Max] = { -1, 150, BITMAP_SIZE_X, 100 };
SetFieldsCount(Field_Max);
SetStatusWidths(Field_Max, widths);
#if wxUSE_CHECKBOX
m_checkbox = new wxCheckBox(this, StatusBar_Checkbox, _T("&Toggle clock"));
m_checkbox->SetValue(true);
#endif
#ifdef USE_STATIC_BITMAP
m_statbmp = new wxStaticBitmap(this, wxID_ANY, wxIcon(green_xpm));
#else
m_statbmp = new wxBitmapButton(this, wxID_ANY, CreateBitmapForButton(),
wxDefaultPosition, wxDefaultSize,
wxBU_EXACTFIT);
#endif
#if wxUSE_TIMER
m_timer.Start(1000);
#endif
SetMinHeight(BITMAP_SIZE_Y);
UpdateClock();
}
#ifdef __VISUALC__
#pragma warning(default: 4355)
#endif
MyStatusBar::~MyStatusBar()
{
#if wxUSE_TIMER
if ( m_timer.IsRunning() )
{
m_timer.Stop();
}
#endif
}
wxBitmap MyStatusBar::CreateBitmapForButton(bool on)
{
static const int BMP_BUTTON_SIZE_X = 10;
static const int BMP_BUTTON_SIZE_Y = 9;
wxBitmap bitmap(BMP_BUTTON_SIZE_X, BMP_BUTTON_SIZE_Y);
wxMemoryDC dc;
dc.SelectObject(bitmap);
dc.SetBrush(on ? *wxGREEN_BRUSH : *wxRED_BRUSH);
dc.SetBackground(*wxLIGHT_GREY_BRUSH);
dc.Clear();
dc.DrawEllipse(0, 0, BMP_BUTTON_SIZE_X, BMP_BUTTON_SIZE_Y);
dc.SelectObject(wxNullBitmap);
return bitmap;
}
void MyStatusBar::OnSize(wxSizeEvent& event)
{
#if wxUSE_CHECKBOX
if ( !m_checkbox )
return;
#endif
wxRect rect;
GetFieldRect(Field_Checkbox, rect);
#if wxUSE_CHECKBOX
m_checkbox->SetSize(rect.x + 2, rect.y + 2, rect.width - 4, rect.height - 4);
#endif
GetFieldRect(Field_Bitmap, rect);
wxSize size = m_statbmp->GetSize();
m_statbmp->Move(rect.x + (rect.width - size.x) / 2,
rect.y + (rect.height - size.y) / 2);
event.Skip();
}
void MyStatusBar::OnButton(wxCommandEvent& WXUNUSED(event))
{
#if wxUSE_CHECKBOX
m_checkbox->SetValue(!m_checkbox->GetValue());
#endif
DoToggle();
}
void MyStatusBar::OnToggleClock(wxCommandEvent& WXUNUSED(event))
{
DoToggle();
}
void MyStatusBar::DoToggle()
{
#if wxUSE_CHECKBOX
if ( m_checkbox->GetValue() )
{
#if wxUSE_TIMER
m_timer.Start(1000);
#endif
#ifdef USE_STATIC_BITMAP
m_statbmp->SetIcon(wxIcon(green_xpm));
#else
m_statbmp->SetBitmapLabel(CreateBitmapForButton(false));
m_statbmp->Refresh();
#endif
UpdateClock();
}
else // don't show clock
{
#if wxUSE_TIMER
m_timer.Stop();
#endif
#ifdef USE_STATIC_BITMAP
m_statbmp->SetIcon(wxIcon(red_xpm));
#else
m_statbmp->SetBitmapLabel(CreateBitmapForButton(true));
m_statbmp->Refresh();
#endif
SetStatusText(wxEmptyString, Field_Clock);
}
#endif
}
void MyStatusBar::UpdateClock()
{
SetStatusText(wxDateTime::Now().FormatTime(), Field_Clock);
}
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