wxWidgets/samples/widgets/widgets.cpp
2001-07-10 17:28:19 +00:00

402 lines
12 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Program: wxWindows Widgets Sample
// Name: widgets.cpp
// Purpose: Sample showing most of the simple wxWindows widgets
// Author: Vadim Zeitlin
// Created: 27.03.01
// Id: $Id$
// Copyright: (c) 2001 Vadim Zeitlin
// License: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// for compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
// for all others, include the necessary headers
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/log.h"
#include "wx/panel.h"
#include "wx/frame.h"
#include "wx/button.h"
#include "wx/checkbox.h"
#include "wx/listbox.h"
#include "wx/statbox.h"
#include "wx/stattext.h"
#include "wx/textctrl.h"
#endif
#include "wx/notebook.h"
#include "wx/sizer.h"
#include "widgets.h"
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// control ids
enum
{
Widgets_ClearLog = 100,
Widgets_Quit
};
// ----------------------------------------------------------------------------
// our classes
// ----------------------------------------------------------------------------
// Define a new application type, each program should derive a class from wxApp
class WidgetsApp : 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();
};
// Define a new frame type: this is going to be our main frame
class WidgetsFrame : public wxFrame
{
public:
// ctor(s) and dtor
WidgetsFrame(const wxString& title);
virtual ~WidgetsFrame();
protected:
// event handlers
void OnButtonClearLog(wxCommandEvent& event);
void OnButtonQuit(wxCommandEvent& event);
// initialize the notebook: add all pages to it
void InitNotebook();
private:
// the panel containing everything
wxPanel *m_panel;
// the listbox for logging messages
wxListBox *m_lboxLog;
// the log target we use to redirect messages to the listbox
wxLog *m_logTarget;
// the notebook containing the test pages
wxNotebook *m_notebook;
// and the image list for it
wxImageList *m_imaglist;
// any class wishing to process wxWindows events must use this macro
DECLARE_EVENT_TABLE()
};
// A log target which just redirects the messages to a listbox
class LboxLogger : public wxLog
{
public:
LboxLogger(wxListBox *lbox, wxLog *logOld)
{
m_lbox = lbox;
//m_lbox->Disable(); -- looks ugly under MSW
m_logOld = logOld;
}
virtual ~LboxLogger()
{
wxLog::SetActiveTarget(m_logOld);
}
private:
// implement sink functions
virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t)
{
// don't put trace messages into listbox or we can get into infinite
// recursion
if ( level == wxLOG_Trace )
{
if ( m_logOld )
{
// cast is needed to call protected method
((LboxLogger *)m_logOld)->DoLog(level, szString, t);
}
}
else
{
wxLog::DoLog(level, szString, t);
}
}
virtual void DoLogString(const wxChar *szString, time_t t)
{
wxString msg;
TimeStamp(&msg);
msg += szString;
#ifdef __WXUNIVERSAL__
m_lbox->AppendAndEnsureVisible(msg);
#else // other ports don't have this method yet
m_lbox->Append(msg);
m_lbox->SetFirstItem(m_lbox->GetCount() - 1);
#endif
}
// the control we use
wxListBox *m_lbox;
// the old log target
wxLog *m_logOld;
};
// array of pages
WX_DEFINE_ARRAY(WidgetsPage *, ArrayWidgetsPage);
// ----------------------------------------------------------------------------
// misc macros
// ----------------------------------------------------------------------------
IMPLEMENT_APP(WidgetsApp)
// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(WidgetsFrame, wxFrame)
EVT_BUTTON(Widgets_ClearLog, WidgetsFrame::OnButtonClearLog)
EVT_BUTTON(Widgets_Quit, WidgetsFrame::OnButtonQuit)
END_EVENT_TABLE()
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// app class
// ----------------------------------------------------------------------------
bool WidgetsApp::OnInit()
{
if ( !wxApp::OnInit() )
return FALSE;
// the reason for having these ifdef's is that I often run two copies of
// this sample side by side and it is useful to see which one is which
wxString title;
#if defined(__WXUNIVERSAL__)
title = _T("wxUniv/");
#endif
#if defined(__WXMSW__)
title += _T("wxMSW");
#elif defined(__WXGTK__)
title += _T("wxGTK");
#else
title += _T("wxWindows");
#endif
wxFrame *frame = new WidgetsFrame(title + _T(" widgets demo"));
frame->Show();
//wxLog::AddTraceMask(_T("listbox"));
//wxLog::AddTraceMask(_T("scrollbar"));
return TRUE;
}
// ----------------------------------------------------------------------------
// WidgetsFrame construction
// ----------------------------------------------------------------------------
WidgetsFrame::WidgetsFrame(const wxString& title)
: wxFrame(NULL, -1, title, wxPoint(0, 50))
{
// init everything
m_lboxLog = (wxListBox *)NULL;
m_logTarget = (wxLog *)NULL;
m_notebook = (wxNotebook *)NULL;
m_imaglist = (wxImageList *)NULL;
// create controls
m_panel = new wxPanel(this, -1);
wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
// we have 2 panes: notebook which pages demonstrating the controls in the
// upper one and the log window with some buttons in the lower
m_notebook = new wxNotebook(m_panel, -1);
InitNotebook();
wxSizer *sizerUp = new wxNotebookSizer(m_notebook);
// the lower one only has the log listbox and a button to clear it
wxSizer *sizerDown = new wxStaticBoxSizer
(
new wxStaticBox(m_panel, -1, _T("&Log window")),
wxVERTICAL
);
m_lboxLog = new wxListBox(m_panel, -1);
sizerDown->Add(m_lboxLog, 1, wxGROW | wxALL, 5);
wxBoxSizer *sizerBtns = new wxBoxSizer(wxHORIZONTAL);
wxButton *btn = new wxButton(m_panel, Widgets_ClearLog, _T("Clear &log"));
sizerBtns->Add(btn);
sizerBtns->Add(10, 0); // spacer
btn = new wxButton(m_panel, Widgets_Quit, _T("E&xit"));
sizerBtns->Add(btn);
sizerDown->Add(sizerBtns, 0, wxALL | wxALIGN_RIGHT, 5);
// put everything together
sizerTop->Add(sizerUp, 1, wxGROW | (wxALL & ~(wxTOP | wxBOTTOM)), 10);
sizerTop->Add(0, 5, 0, wxGROW); // spacer in between
sizerTop->Add(sizerDown, 0, wxGROW | (wxALL & ~wxTOP), 10);
m_panel->SetAutoLayout(TRUE);
m_panel->SetSizer(sizerTop);
sizerTop->Fit(this);
sizerTop->SetSizeHints(this);
// now that everything is created we can redirect the log messages to the
// listbox
m_logTarget = new LboxLogger(m_lboxLog, wxLog::GetActiveTarget());
wxLog::SetActiveTarget(m_logTarget);
}
void WidgetsFrame::InitNotebook()
{
m_imaglist = new wxImageList(32, 32);
ArrayWidgetsPage pages;
wxArrayString labels;
// we need to first create all pages and only then add them to the notebook
// as we need the image list first
WidgetsPageInfo *info = WidgetsPage::ms_widgetPages;
while ( info )
{
WidgetsPage *page = (*info->GetCtor())(m_notebook, m_imaglist);
pages.Add(page);
labels.Add(info->GetLabel());
info = info->GetNext();
}
m_notebook->SetImageList(m_imaglist);
// now do add them
size_t count = pages.GetCount();
for ( size_t n = 0; n < count; n++ )
{
m_notebook->AddPage(
pages[n],
labels[n],
FALSE, // don't select
n // image id
);
}
}
WidgetsFrame::~WidgetsFrame()
{
delete m_logTarget;
delete m_imaglist;
}
// ----------------------------------------------------------------------------
// WidgetsFrame event handlers
// ----------------------------------------------------------------------------
void WidgetsFrame::OnButtonQuit(wxCommandEvent& WXUNUSED(event))
{
Close();
}
void WidgetsFrame::OnButtonClearLog(wxCommandEvent& event)
{
m_lboxLog->Clear();
}
// ----------------------------------------------------------------------------
// WidgetsPageInfo
// ----------------------------------------------------------------------------
WidgetsPageInfo *WidgetsPage::ms_widgetPages = NULL;
WidgetsPageInfo::WidgetsPageInfo(Constructor ctor, const wxChar *label)
: m_label(label)
{
m_ctor = ctor;
m_next = WidgetsPage::ms_widgetPages;
WidgetsPage::ms_widgetPages = this;
}
// ----------------------------------------------------------------------------
// WidgetsPage
// ----------------------------------------------------------------------------
WidgetsPage::WidgetsPage(wxNotebook *notebook)
: wxPanel(notebook, -1)
{
}
wxSizer *WidgetsPage::CreateSizerWithText(wxControl *control,
wxWindowID id,
wxTextCtrl **ppText)
{
wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
wxTextCtrl *text = new wxTextCtrl(this, id, _T(""));
sizerRow->Add(control, 0, wxRIGHT | wxALIGN_CENTRE_VERTICAL, 5);
sizerRow->Add(text, 1, wxLEFT | wxALIGN_CENTRE_VERTICAL, 5);
if ( ppText )
*ppText = text;
return sizerRow;
}
// create a sizer containing a label and a text ctrl
wxSizer *WidgetsPage::CreateSizerWithTextAndLabel(const wxString& label,
wxWindowID id,
wxTextCtrl **ppText)
{
return CreateSizerWithText(new wxStaticText(this, -1, label), id, ppText);
}
// create a sizer containing a button and a text ctrl
wxSizer *WidgetsPage::CreateSizerWithTextAndButton(wxWindowID idBtn,
const wxString& label,
wxWindowID id,
wxTextCtrl **ppText)
{
return CreateSizerWithText(new wxButton(this, idBtn, label), id, ppText);
}
wxCheckBox *WidgetsPage::CreateCheckBoxAndAddToSizer(wxSizer *sizer,
const wxString& label,
wxWindowID id)
{
wxCheckBox *checkbox = new wxCheckBox(this, id, label);
sizer->Add(checkbox, 0, wxLEFT | wxRIGHT, 5);
sizer->Add(0, 2, 0, wxGROW); // spacer
return checkbox;
}