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wxwidgets/samples/collpane/collpane.cpp
Vadim Zeitlin 4f4c5fcfdf Use nullptr instead of NULL in the code and documentation 
This is a combination of running clang-tidy with modernize-use-nullptr
check for some ports (GTK, X11, OSX) and manual changes to the ports for
which it couldn't be used easily (MSW, DFB) and also manually updating
the docs.

Also replace NULL with null or nullptr in the comments as this is more
consistent with the use of nullptr in the code and makes it simpler to
grep for the remaining occurrences of NULL itself.

And also use null in the assert messages.

Only a few occurrences of "NULL" are still left in non-C files, mostly
corresponding to unclear comments or string output which it might not be
safe to change.
2022-10-18 01:25:25 +02:00

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/////////////////////////////////////////////////////////////////////////////
// Name: collpane.cpp
// Purpose: wxCollapsiblePane sample
// Author: Francesco Montorsi
// Modified by:
// Created: 14/10/06
// Copyright: (c) Francesco Montorsi
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifndef WX_PRECOMP
#include "wx/log.h"
#include "wx/app.h"
#include "wx/frame.h"
#include "wx/scrolwin.h"
#include "wx/menu.h"
#include "wx/textdlg.h" // for wxGetTextFromUser
#endif
#include "wx/collheaderctrl.h"
#include "wx/collpane.h"
#include "wx/sizer.h"
#include "wx/stattext.h"
#include "wx/clrpicker.h"
#include "wx/filepicker.h"
#include "wx/fontpicker.h"
#include "wx/aboutdlg.h"
#ifndef wxHAS_IMAGES_IN_RESOURCES
#include "../sample.xpm"
#endif
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// ID for the menu commands
enum
{
PANE_COLLAPSE = 100,
PANE_EXPAND,
PANE_SETLABEL,
PANE_SHOWDLG,
PANE_ABOUT = wxID_ABOUT,
PANE_QUIT = wxID_EXIT,
PANE_BUTTON,
PANE_TEXTCTRL
};
// ----------------------------------------------------------------------------
// our classes
// ----------------------------------------------------------------------------
class MyApp: public wxApp
{
public:
MyApp() { }
virtual bool OnInit() override;
wxDECLARE_NO_COPY_CLASS(MyApp);
};
class MyFrame: public wxFrame
{
public:
MyFrame();
virtual ~MyFrame();
// Menu commands
void OnCollapse(wxCommandEvent& event);
void OnExpand(wxCommandEvent& event);
void OnSetLabel(wxCommandEvent& event);
void OnShowDialog(wxCommandEvent& event);
void Quit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
// UI update handlers
void OnCollapseUpdateUI(wxUpdateUIEvent& event);
void OnExpandUpdateUI(wxUpdateUIEvent& event);
void OnCollapsibleHeaderChanged(wxCommandEvent& event);
private:
wxCollapsiblePane *m_collPane;
wxCollapsibleHeaderCtrl *m_collHeaderCtrl;
wxBoxSizer *m_paneSizer;
wxDECLARE_EVENT_TABLE();
wxDECLARE_NO_COPY_CLASS(MyFrame);
};
class MyDialog : public wxDialog
{
public:
MyDialog(wxFrame *parent);
void OnToggleStatus(wxCommandEvent& WXUNUSED(ev));
void OnAlignButton(wxCommandEvent& WXUNUSED(ev));
void OnPaneChanged(wxCollapsiblePaneEvent& event);
private:
wxCollapsiblePane *m_collPane;
wxGridSizer *m_paneSizer;
wxDECLARE_EVENT_TABLE();
wxDECLARE_NO_COPY_CLASS(MyDialog);
};
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// MyApp
// ----------------------------------------------------------------------------
wxIMPLEMENT_APP(MyApp);
bool MyApp::OnInit()
{
if ( !wxApp::OnInit() )
return false;
// create and show the main frame
MyFrame* frame = new MyFrame;
frame->Show(true);
return true;
}
// ----------------------------------------------------------------------------
// MyFrame
// ----------------------------------------------------------------------------
wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(PANE_COLLAPSE, MyFrame::OnCollapse)
EVT_MENU(PANE_EXPAND, MyFrame::OnExpand)
EVT_MENU(PANE_SETLABEL, MyFrame::OnSetLabel)
EVT_MENU(PANE_SHOWDLG, MyFrame::OnShowDialog)
EVT_MENU(PANE_ABOUT, MyFrame::OnAbout)
EVT_MENU(PANE_QUIT, MyFrame::Quit)
EVT_UPDATE_UI(PANE_COLLAPSE, MyFrame::OnCollapseUpdateUI)
EVT_UPDATE_UI(PANE_EXPAND, MyFrame::OnExpandUpdateUI)
EVT_COLLAPSIBLEHEADER_CHANGED(wxID_ANY, MyFrame::OnCollapsibleHeaderChanged)
wxEND_EVENT_TABLE()
// My frame constructor
MyFrame::MyFrame()
: wxFrame(nullptr, wxID_ANY, "wxCollapsiblePane sample",
wxDefaultPosition, wxSize(420, 300))
{
SetIcon(wxICON(sample));
#if wxUSE_STATUSBAR
CreateStatusBar(2);
#endif // wxUSE_STATUSBAR
// Make a menubar
wxMenu *paneMenu = new wxMenu;
paneMenu->Append(PANE_COLLAPSE, "Collapse\tCtrl-C");
paneMenu->Append(PANE_EXPAND, "Expand\tCtrl-E");
paneMenu->AppendSeparator();
paneMenu->Append(PANE_SETLABEL, "Set label...\tCtrl-L");
paneMenu->AppendSeparator();
paneMenu->Append(PANE_SHOWDLG, "Show dialog...\tCtrl-S");
paneMenu->AppendSeparator();
paneMenu->Append(PANE_QUIT);
wxMenu *helpMenu = new wxMenu;
helpMenu->Append(PANE_ABOUT);
wxMenuBar *menuBar = new wxMenuBar;
menuBar->Append(paneMenu, "&Pane");
menuBar->Append(helpMenu, "&Help");
SetMenuBar(menuBar);
m_collPane = new wxCollapsiblePane(this, -1, "This is a wxCollapsiblePane");
wxWindow *win = m_collPane->GetPane();
m_paneSizer = new wxBoxSizer( wxHORIZONTAL );
wxBoxSizer* paneSubSizer = new wxBoxSizer( wxVERTICAL );
m_paneSizer->AddSpacer( 20 );
m_paneSizer->Add( paneSubSizer, 1 );
paneSubSizer->Add( new wxStaticText(win, -1, "Static text" ), 0, wxALIGN_LEFT | wxALL, 3 );
paneSubSizer->Add( new wxStaticText(win, -1, "Yet another one!" ), 0, wxALIGN_LEFT | wxALL, 3 );
paneSubSizer->Add( new wxTextCtrl(win, PANE_TEXTCTRL, "Text control", wxDefaultPosition, wxSize(80,-1) ), 0, wxALIGN_LEFT | wxALL, 3 );
paneSubSizer->Add( new wxButton(win, PANE_BUTTON, "Press to align right" ), 0, wxALIGN_LEFT | wxALL, 3 );
win->SetSizer( m_paneSizer );
m_collHeaderCtrl = new wxCollapsibleHeaderCtrl(this, wxID_ANY, "Collapsed wxCollapsibleHeaderCtrl");
wxSizer* const sizerTop = new wxBoxSizer(wxVERTICAL);
sizerTop->Add(m_collPane, wxSizerFlags(1).Expand());
sizerTop->Add(m_collHeaderCtrl);
SetSizer(sizerTop);
}
MyFrame::~MyFrame()
{
}
// menu command handlers
void MyFrame::Quit(wxCommandEvent& WXUNUSED(event) )
{
Close(true);
}
void MyFrame::OnCollapse(wxCommandEvent& WXUNUSED(event) )
{
m_collPane->Collapse();
}
void MyFrame::OnExpand(wxCommandEvent& WXUNUSED(event) )
{
m_collPane->Expand();
}
void MyFrame::OnSetLabel(wxCommandEvent& WXUNUSED(event) )
{
wxString text = wxGetTextFromUser
(
"Enter new label",
wxGetTextFromUserPromptStr,
m_collPane->GetLabel()
);
m_collPane->SetLabel(text);
}
void MyFrame::OnShowDialog(wxCommandEvent& WXUNUSED(event) )
{
MyDialog dlg(this);
dlg.ShowModal();
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
{
wxAboutDialogInfo info;
info.SetName(_("wxCollapsiblePane sample"));
info.SetDescription(_("This sample program demonstrates usage of wxCollapsiblePane"));
info.SetCopyright("(C) 2006 Francesco Montorsi <frm@users.sourceforge.net>");
wxAboutBox(info, this);
}
void MyFrame::OnCollapseUpdateUI(wxUpdateUIEvent& event)
{
event.Enable(!m_collPane->IsCollapsed());
}
void MyFrame::OnExpandUpdateUI(wxUpdateUIEvent& event)
{
event.Enable(m_collPane->IsCollapsed());
}
void MyFrame::OnCollapsibleHeaderChanged(wxCommandEvent& WXUNUSED(event))
{
m_collHeaderCtrl->SetLabel
(
wxString::Format
(
"%s wxCollapsibleHeaderCtrl",
m_collHeaderCtrl->IsCollapsed() ? "Collapsed" : "Expanded"
)
);
}
// ----------------------------------------------------------------------------
// MyDialog
// ----------------------------------------------------------------------------
enum
{
PANEDLG_TOGGLESTATUS_BTN = wxID_HIGHEST
};
wxBEGIN_EVENT_TABLE(MyDialog, wxDialog)
EVT_BUTTON(PANEDLG_TOGGLESTATUS_BTN, MyDialog::OnToggleStatus)
EVT_COLLAPSIBLEPANE_CHANGED(wxID_ANY, MyDialog::OnPaneChanged)
EVT_BUTTON(PANE_BUTTON, MyDialog::OnAlignButton)
wxEND_EVENT_TABLE()
MyDialog::MyDialog(wxFrame *parent)
: wxDialog(parent, wxID_ANY, "Test dialog",
wxDefaultPosition, wxDefaultSize,
wxRESIZE_BORDER|wxDEFAULT_DIALOG_STYLE )
{
wxSizer *sz = new wxBoxSizer(wxVERTICAL);
sz->Add(new wxStaticText(this, -1,
"This dialog allows you to test the wxCollapsiblePane control"),
0, wxALL, 5);
sz->Add(new wxButton(this, PANEDLG_TOGGLESTATUS_BTN, "Change status"),
1, wxGROW|wxALL, 5);
m_collPane = new wxCollapsiblePane(this, -1, "Click here for a surprise");
sz->Add(m_collPane, 0, wxGROW|wxALL, 5);
sz->Add(new wxTextCtrl(this, -1, "just a test"), 0, wxGROW|wxALL, 5);
sz->AddSpacer(10);
sz->Add(new wxButton(this, wxID_OK), 0, wxALIGN_RIGHT|wxALL, 5);
// now add test controls in the collapsible pane
wxWindow *win = m_collPane->GetPane();
m_paneSizer = new wxGridSizer(4, 1, 5, 5);
m_paneSizer->Add( new wxStaticText(win, -1, "Static text" ), 0, wxALIGN_LEFT );
m_paneSizer->Add( new wxStaticText(win, -1, "Yet another one!" ), 0, wxALIGN_LEFT );
m_paneSizer->Add( new wxTextCtrl(win, PANE_TEXTCTRL, "Text control", wxDefaultPosition, wxSize(80,-1) ), 0, wxALIGN_LEFT );
m_paneSizer->Add( new wxButton(win, PANE_BUTTON, "Press to align right" ), 0, wxALIGN_LEFT );
win->SetSizer( m_paneSizer );
win->SetSizer( m_paneSizer );
m_paneSizer->SetSizeHints(win);
SetSizer(sz);
sz->SetSizeHints(this);
}
void MyDialog::OnToggleStatus(wxCommandEvent& WXUNUSED(ev))
{
m_collPane->Collapse(!m_collPane->IsCollapsed());
}
void MyDialog::OnAlignButton(wxCommandEvent& WXUNUSED(ev))
{
wxSizerItem *item = m_paneSizer->GetItem( FindWindow(PANE_TEXTCTRL), true );
item->SetFlag( wxALIGN_RIGHT );
Layout();
}
void MyDialog::OnPaneChanged(wxCollapsiblePaneEvent& event)
{
wxLogMessage("The pane has just been %s by the user",
event.GetCollapsed() ? "collapsed" : "expanded");
}
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