[wxWidgets.git] / samples / htlbox / htlbox.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        htmllbox.cpp
// Purpose:     HtmlLbox wxWidgets sample
// Author:      Vadim Zeitlin
// Modified by:
// Created:     31.05.03
// RCS-ID:      $Id$
// Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// 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/frame.h"
    #include "wx/log.h"
    #include "wx/textdlg.h"
    #include "wx/sizer.h"

    #include "wx/menu.h"
    #include "wx/msgdlg.h"
    #include "wx/textctrl.h"

    #include "wx/dc.h"
#endif

#include "wx/colordlg.h"
#include "wx/numdlg.h"

#include "wx/htmllbox.h"

// you can also have a file containing HTML strings for testing, enable this if
// you want to use it
//#define USE_HTML_FILE
#ifdef USE_HTML_FILE
    #include "wx/textfile.h"
#endif

#include "../sample.xpm"

// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------

// to use wxHtmlListBox you must derive a new class from it as you must
// implement pure virtual OnGetItem()
class MyHtmlListBox : public wxHtmlListBox
{
public:
    MyHtmlListBox(wxWindow *parent, bool multi = false);

    void SetChangeSelFg(bool change) { m_change = change; }
    void UpdateFirstItem();

protected:
    // override this method to return data to be shown in the listbox (this is
    // mandatory)
    virtual wxString OnGetItem(size_t n) const;

    // change the appearance by overriding these functions (this is optional)
    virtual void OnDrawSeparator(wxDC& dc, wxRect& rect, size_t n) const;
    virtual wxColour GetSelectedTextColour(const wxColour& colFg) const;


    // flag telling us whether we should use fg colour even for the selected
    // item
    bool m_change;

    // flag which we toggle to update the first items text in OnGetItem()
    bool m_firstItemUpdated;


#ifdef USE_HTML_FILE
    wxTextFile m_file;
#endif

    DECLARE_NO_COPY_CLASS(MyHtmlListBox)
};

class MyFrame : public wxFrame
{
public:
    MyFrame();
    virtual ~MyFrame();

    // event handlers
    void OnQuit(wxCommandEvent& event);
    void OnAbout(wxCommandEvent& event);

    void OnSetMargins(wxCommandEvent& event);
    void OnDrawSeparator(wxCommandEvent&) { m_hlbox->RefreshAll(); }
    void OnToggleMulti(wxCommandEvent& event);
    void OnSelectAll(wxCommandEvent& event);
    void OnUpdateItem(wxCommandEvent& event);

    void OnSetBgCol(wxCommandEvent& event);
    void OnSetSelBgCol(wxCommandEvent& event);
    void OnSetSelFgCol(wxCommandEvent& event);


    void OnUpdateUISelectAll(wxUpdateUIEvent& event);

    void OnLboxSelect(wxCommandEvent& event);
    void OnLboxDClick(wxCommandEvent& event)
    {
        wxLogMessage(_T("Listbox item %ld double clicked."), event.GetInt());
    }

private:
    MyHtmlListBox *m_hlbox;

    // any class wishing to process wxWidgets events must use this macro
    DECLARE_EVENT_TABLE()
};

class MyApp : public wxApp
{
public:
    virtual bool OnInit() { (new MyFrame())->Show(); return true; }
};

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

// IDs for the controls and the menu commands
enum
{
    // menu items
    HtmlLbox_Quit = 1,

    HtmlLbox_SetMargins,
    HtmlLbox_DrawSeparator,
    HtmlLbox_ToggleMulti,
    HtmlLbox_SelectAll,
    HtmlLbox_UpdateItem,

    HtmlLbox_SetBgCol,
    HtmlLbox_SetSelBgCol,
    HtmlLbox_SetSelFgCol,

    // it is important for the id corresponding to the "About" command to have
    // this standard value as otherwise it won't be handled properly under Mac
    // (where it is special and put into the "Apple" menu)
    HtmlLbox_About = wxID_ABOUT
};

// ----------------------------------------------------------------------------
// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------

BEGIN_EVENT_TABLE(MyFrame, wxFrame)
    EVT_MENU(HtmlLbox_Quit,  MyFrame::OnQuit)

    EVT_MENU(HtmlLbox_SetMargins, MyFrame::OnSetMargins)
    EVT_MENU(HtmlLbox_DrawSeparator, MyFrame::OnDrawSeparator)
    EVT_MENU(HtmlLbox_ToggleMulti, MyFrame::OnToggleMulti)
    EVT_MENU(HtmlLbox_SelectAll, MyFrame::OnSelectAll)
    EVT_MENU(HtmlLbox_UpdateItem, MyFrame::OnUpdateItem)

    EVT_MENU(HtmlLbox_About, MyFrame::OnAbout)

    EVT_MENU(HtmlLbox_SetBgCol, MyFrame::OnSetBgCol)
    EVT_MENU(HtmlLbox_SetSelBgCol, MyFrame::OnSetSelBgCol)
    EVT_MENU(HtmlLbox_SetSelFgCol, MyFrame::OnSetSelFgCol)

    EVT_UPDATE_UI(HtmlLbox_SelectAll, MyFrame::OnUpdateUISelectAll)


    EVT_LISTBOX(wxID_ANY, MyFrame::OnLboxSelect)
    EVT_LISTBOX_DCLICK(wxID_ANY, MyFrame::OnLboxDClick)
END_EVENT_TABLE()

IMPLEMENT_APP(MyApp)

// ============================================================================
// MyFrame
// ============================================================================

// ----------------------------------------------------------------------------
// MyFrame ctor/dtor
// ----------------------------------------------------------------------------

// frame constructor
MyFrame::MyFrame()
       : wxFrame(NULL, wxID_ANY, _T("HtmlLbox wxWidgets Sample"),
                 wxDefaultPosition, wxSize(400, 500))
{
    // set the frame icon
    SetIcon(wxIcon(sample_xpm));

#if wxUSE_MENUS
    // create a menu bar
    wxMenu *menuFile = new wxMenu;
    menuFile->Append(HtmlLbox_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));

    // create our specific menu
    wxMenu *menuHLbox = new wxMenu;
    menuHLbox->Append(HtmlLbox_SetMargins,
                      _T("Set &margins...\tCtrl-G"),
                      _T("Change the margins around the items"));
    menuHLbox->AppendCheckItem(HtmlLbox_DrawSeparator,
                               _T("&Draw separators\tCtrl-D"),
                               _T("Toggle drawing separators between cells"));
    menuHLbox->AppendSeparator();
    menuHLbox->AppendCheckItem(HtmlLbox_ToggleMulti,
                               _T("&Multiple selection\tCtrl-M"),
                               _T("Toggle multiple selection on/off"));
    menuHLbox->AppendSeparator();
    menuHLbox->Append(HtmlLbox_SelectAll, _T("Select &all items\tCtrl-A"));
    menuHLbox->Append(HtmlLbox_UpdateItem, _T("Update &first item\tCtrl-U"));
    menuHLbox->AppendSeparator();
    menuHLbox->Append(HtmlLbox_SetBgCol, _T("Set &background...\tCtrl-B"));
    menuHLbox->Append(HtmlLbox_SetSelBgCol,
                      _T("Set &selection background...\tCtrl-S"));
    menuHLbox->AppendCheckItem(HtmlLbox_SetSelFgCol,
                               _T("Keep &foreground in selection\tCtrl-F"));

    // the "About" item should be in the help menu
    wxMenu *helpMenu = new wxMenu;
    helpMenu->Append(HtmlLbox_About, _T("&About...\tF1"), _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(menuHLbox, _T("&Listbox"));
    menuBar->Append(helpMenu, _T("&Help"));

    menuBar->Check(HtmlLbox_DrawSeparator, true);

    // ... and attach this menu bar to the frame
    SetMenuBar(menuBar);
#endif // wxUSE_MENUS

#if wxUSE_STATUSBAR
    // create a status bar just for fun (by default with 1 pane only)
    CreateStatusBar(2);
    SetStatusText(_T("Welcome to wxWidgets!"));
#endif // wxUSE_STATUSBAR

    // create the child controls
    m_hlbox = new MyHtmlListBox(this);
    wxTextCtrl *text = new wxTextCtrl(this, wxID_ANY, _T(""),
                                      wxDefaultPosition, wxDefaultSize,
                                      wxTE_MULTILINE);
    delete wxLog::SetActiveTarget(new wxLogTextCtrl(text));

    // and lay them out
    wxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
    sizer->Add(m_hlbox, 1, wxGROW);
    sizer->Add(text, 1, wxGROW);

    SetSizer(sizer);
}

MyFrame::~MyFrame()
{
    delete wxLog::SetActiveTarget(NULL);
}

// ----------------------------------------------------------------------------
// menu event handlers
// ----------------------------------------------------------------------------

void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
    // true is to force the frame to close
    Close(true);
}

void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
    wxMessageBox(_T("This sample shows wxHtmlListBox class.\n")
                 _T("\n")
                 _T("(c) 2003 Vadim Zeitlin"),
                 _T("About HtmlLbox"),
                 wxOK | wxICON_INFORMATION,
                 this);
}

void MyFrame::OnSetMargins(wxCommandEvent& WXUNUSED(event))
{
    long margin = wxGetNumberFromUser
                  (
                    _T("Enter the margins to use for the listbox items."),
                    _T("Margin: "),
                    _T("HtmlLbox: Set the margins"),
                    0, 0, 20,
                    this
                  );

    if ( margin != -1 )
    {
        m_hlbox->SetMargins(margin, margin);
        m_hlbox->RefreshAll();
    }
}

void MyFrame::OnToggleMulti(wxCommandEvent& event)
{
    // we need to recreate the listbox
    wxSizer *sizer = GetSizer();
    sizer->Detach(m_hlbox);
    delete m_hlbox;

    m_hlbox = new MyHtmlListBox(this, event.IsChecked());
    sizer->Prepend(m_hlbox, 1, wxGROW);

    sizer->Layout();
}

void MyFrame::OnSelectAll(wxCommandEvent& WXUNUSED(event))
{
    m_hlbox->SelectAll();
}

void MyFrame::OnUpdateUISelectAll(wxUpdateUIEvent& event)
{
    event.Enable( m_hlbox && m_hlbox->HasMultipleSelection() );
}

void MyFrame::OnUpdateItem(wxCommandEvent& WXUNUSED(event))
{
    m_hlbox->UpdateFirstItem();
}

void MyFrame::OnSetBgCol(wxCommandEvent& WXUNUSED(event))
{
    wxColour col = wxGetColourFromUser(this, m_hlbox->GetBackgroundColour());
    if ( col.Ok() )
    {
        m_hlbox->SetBackgroundColour(col);
        m_hlbox->Refresh();

#if wxUSE_STATUSBAR
        SetStatusText(_T("Background colour changed."));
#endif // wxUSE_STATUSBAR
    }
}

void MyFrame::OnSetSelBgCol(wxCommandEvent& WXUNUSED(event))
{
    wxColour col = wxGetColourFromUser(this, m_hlbox->GetSelectionBackground());
    if ( col.Ok() )
    {
        m_hlbox->SetSelectionBackground(col);
        m_hlbox->Refresh();

#if wxUSE_STATUSBAR
        SetStatusText(_T("Selection background colour changed."));
#endif // wxUSE_STATUSBAR
    }
}

void MyFrame::OnSetSelFgCol(wxCommandEvent& event)
{
    m_hlbox->SetChangeSelFg(!event.IsChecked());
    m_hlbox->Refresh();
}

// ----------------------------------------------------------------------------
// listbox event handlers
// ----------------------------------------------------------------------------

void MyFrame::OnLboxSelect(wxCommandEvent& event)
{
    wxLogMessage(_T("Listbox selection is now %ld."), event.GetInt());

    if ( m_hlbox->HasMultipleSelection() )
    {
        wxString s;

        bool first = true;
        unsigned long cookie;
        for ( int item = m_hlbox->GetFirstSelected(cookie);
              item != wxNOT_FOUND;
              item = m_hlbox->GetNextSelected(cookie) )
        {
            if ( first )
                first = false;
            else
                s << _T(", ");

            s << item;
        }

        if ( !s.empty() )
            wxLogMessage(_T("Selected items: %s"), s.c_str());
    }

#if wxUSE_STATUSBAR
    SetStatusText(wxString::Format(
                    _T("# items selected = %lu"),
                    (unsigned long)m_hlbox->GetSelectedCount()
                  ));
#endif // wxUSE_STATUSBAR
}

// ============================================================================
// MyHtmlListBox
// ============================================================================

MyHtmlListBox::MyHtmlListBox(wxWindow *parent, bool multi)
             : wxHtmlListBox(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize,
                             multi ? wxLB_MULTIPLE : 0)
{
    m_change = true;
    m_firstItemUpdated = false;


    SetMargins(5, 5);

#ifdef USE_HTML_FILE
    if ( !m_file.Open(_T("results")) )
    {
        wxLogError(_T("Failed to open results file"));
    }
    else
    {
        SetItemCount(m_file.GetLineCount());
    }
#else
    SetItemCount(1000);
#endif

    SetSelection(3);
}

void MyHtmlListBox::OnDrawSeparator(wxDC& dc, wxRect& rect, size_t) const
{
    if ( ((MyFrame *)GetParent())->
            GetMenuBar()->IsChecked(HtmlLbox_DrawSeparator) )
    {
        dc.SetPen(*wxBLACK_DASHED_PEN);
        dc.DrawLine(rect.x, rect.y, rect.GetRight(), rect.y);
        dc.DrawLine(rect.x, rect.GetBottom(), rect.GetRight(), rect.GetBottom());
    }
}

wxString MyHtmlListBox::OnGetItem(size_t n) const
{
    if ( !n && m_firstItemUpdated )
    {
        return wxString::Format(_T("<h1><b>Just updated</b></h1>"));
    }

#ifdef USE_HTML_FILE
    wxString s;
    if ( m_file.IsOpened() )
        s = m_file[n];

    return s;
#else
    int level = n % 6 + 1;
    return wxString::Format(_T("<h%d><font color=#%2x%2x%2x>")
                            _T("Item</font> <b>%lu</b>")
                            _T("</h%d>"),
                            level,
                            abs((int)n - 192) % 256,
                            abs((int)n - 256) % 256,
                            abs((int)n - 128) % 256,
                            (unsigned long)n, level);
#endif
}

wxColour MyHtmlListBox::GetSelectedTextColour(const wxColour& colFg) const
{
    return m_change ? wxHtmlListBox::GetSelectedTextColour(colFg) : colFg;
}

void MyHtmlListBox::UpdateFirstItem()
{
    m_firstItemUpdated = !m_firstItemUpdated;

    RefreshLine(0);
}
Commit	Line	Data
201ca879 VZ	1	/////////////////////////////////////////////////////////////////////////////
201ca879 VZ	2	// Name: htmllbox.cpp
be5a51fb	3	// Purpose: HtmlLbox wxWidgets sample
201ca879 VZ	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 31.05.03
	7	// RCS-ID: $Id$
be5a51fb	8	// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
201ca879 VZ	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	// For compilers that support precompilation, includes "wx/wx.h".
	21	#include "wx/wxprec.h"
	22
	23	#ifdef __BORLANDC__
	24	#pragma hdrstop
	25	#endif
	26
5f732810	27	// for all others, include the necessary headers
201ca879 VZ	28	#ifndef WX_PRECOMP
	29	#include "wx/app.h"
	30	#include "wx/frame.h"
	31	#include "wx/log.h"
5f732810	32	#include "wx/textdlg.h"
6170c108 VZ	33	#include "wx/sizer.h"
	34
	35	#include "wx/menu.h"
	36	#include "wx/msgdlg.h"
	37	#include "wx/textctrl.h"
	38
	39	#include "wx/dc.h"
201ca879 VZ	40	#endif
201ca879 VZ	41
9a9b4940	42	#include "wx/colordlg.h"
e4f3eb42	43	#include "wx/numdlg.h"
9a9b4940	44
201ca879 VZ	45	#include "wx/htmllbox.h"
201ca879 VZ	46
5f732810 VZ	47	// you can also have a file containing HTML strings for testing, enable this if
5f732810 VZ	48	// you want to use it
c2a331e0	49	//#define USE_HTML_FILE
5f732810 VZ	50	#ifdef USE_HTML_FILE
	51	#include "wx/textfile.h"
	52	#endif
	53
b6cf9ad0	54	#include "../sample.xpm"
201ca879 VZ	55
	56	// ----------------------------------------------------------------------------
	57	// private classes
	58	// ----------------------------------------------------------------------------
	59
201ca879 VZ	60	// to use wxHtmlListBox you must derive a new class from it as you must
	61	// implement pure virtual OnGetItem()
	62	class MyHtmlListBox : public wxHtmlListBox
	63	{
	64	public:
9a9b4940	65	MyHtmlListBox(wxWindow *parent, bool multi = false);
5f732810	66
9a9b4940	67	void SetChangeSelFg(bool change) { m_change = change; }
1d41ed0a	68	void UpdateFirstItem();
201ca879 VZ	69
201ca879 VZ	70	protected:
1d41ed0a VZ	71	// override this method to return data to be shown in the listbox (this is
1d41ed0a VZ	72	// mandatory)
9a9b4940	73	virtual wxString OnGetItem(size_t n) const;
201ca879	74
1d41ed0a	75	// change the appearance by overriding these functions (this is optional)
5f732810	76	virtual void OnDrawSeparator(wxDC& dc, wxRect& rect, size_t n) const;
9a9b4940	77	virtual wxColour GetSelectedTextColour(const wxColour& colFg) const;
201ca879	78
1d41ed0a VZ	79
	80	// flag telling us whether we should use fg colour even for the selected
	81	// item
9a9b4940 VZ	82	bool m_change;
9a9b4940 VZ	83
1d41ed0a VZ	84	// flag which we toggle to update the first items text in OnGetItem()
	85	bool m_firstItemUpdated;
	86
	87
	88
9a9b4940	89	#ifdef USE_HTML_FILE
5f732810	90	wxTextFile m_file;
9a9b4940	91	#endif
27d0dcd0 VZ	92
27d0dcd0 VZ	93	DECLARE_NO_COPY_CLASS(MyHtmlListBox)
201ca879 VZ	94	};
201ca879 VZ	95
8613d47b VZ	96	class MyFrame : public wxFrame
	97	{
	98	public:
	99	MyFrame();
	100	virtual ~MyFrame();
	101
	102	// event handlers
	103	void OnQuit(wxCommandEvent& event);
	104	void OnAbout(wxCommandEvent& event);
	105
5f732810 VZ	106	void OnSetMargins(wxCommandEvent& event);
	107	void OnDrawSeparator(wxCommandEvent&) { m_hlbox->RefreshAll(); }
	108	void OnToggleMulti(wxCommandEvent& event);
	109	void OnSelectAll(wxCommandEvent& event);
1d41ed0a	110	void OnUpdateItem(wxCommandEvent& event);
8613d47b	111
9a9b4940 VZ	112	void OnSetBgCol(wxCommandEvent& event);
	113	void OnSetSelBgCol(wxCommandEvent& event);
	114	void OnSetSelFgCol(wxCommandEvent& event);
	115
	116
5f732810	117	void OnUpdateUISelectAll(wxUpdateUIEvent& event);
8613d47b	118
5f732810	119	void OnLboxSelect(wxCommandEvent& event);
8613d47b VZ	120	void OnLboxDClick(wxCommandEvent& event)
	121	{
	122	wxLogMessage(_T("Listbox item %ld double clicked."), event.GetInt());
	123	}
	124
	125	private:
	126	MyHtmlListBox *m_hlbox;
	127
be5a51fb	128	// any class wishing to process wxWidgets events must use this macro
8613d47b VZ	129	DECLARE_EVENT_TABLE()
	130	};
	131
5f732810 VZ	132	class MyApp : public wxApp
	133	{
	134	public:
07850a49	135	virtual bool OnInit() { (new MyFrame())->Show(); return true; }
5f732810 VZ	136	};
5f732810 VZ	137
201ca879 VZ	138	// ----------------------------------------------------------------------------
	139	// constants
	140	// ----------------------------------------------------------------------------
	141
	142	// IDs for the controls and the menu commands
	143	enum
	144	{
	145	// menu items
	146	HtmlLbox_Quit = 1,
	147
5f732810 VZ	148	HtmlLbox_SetMargins,
	149	HtmlLbox_DrawSeparator,
	150	HtmlLbox_ToggleMulti,
	151	HtmlLbox_SelectAll,
1d41ed0a	152	HtmlLbox_UpdateItem,
5f732810	153
9a9b4940 VZ	154	HtmlLbox_SetBgCol,
	155	HtmlLbox_SetSelBgCol,
	156	HtmlLbox_SetSelFgCol,
	157
201ca879 VZ	158	// it is important for the id corresponding to the "About" command to have
	159	// this standard value as otherwise it won't be handled properly under Mac
	160	// (where it is special and put into the "Apple" menu)
	161	HtmlLbox_About = wxID_ABOUT
	162	};
	163
	164	// ----------------------------------------------------------------------------
be5a51fb	165	// event tables and other macros for wxWidgets
201ca879 VZ	166	// ----------------------------------------------------------------------------
201ca879 VZ	167
201ca879 VZ	168	BEGIN_EVENT_TABLE(MyFrame, wxFrame)
201ca879 VZ	169	EVT_MENU(HtmlLbox_Quit, MyFrame::OnQuit)
5f732810 VZ	170
	171	EVT_MENU(HtmlLbox_SetMargins, MyFrame::OnSetMargins)
	172	EVT_MENU(HtmlLbox_DrawSeparator, MyFrame::OnDrawSeparator)
	173	EVT_MENU(HtmlLbox_ToggleMulti, MyFrame::OnToggleMulti)
	174	EVT_MENU(HtmlLbox_SelectAll, MyFrame::OnSelectAll)
1d41ed0a	175	EVT_MENU(HtmlLbox_UpdateItem, MyFrame::OnUpdateItem)
5f732810	176
201ca879 VZ	177	EVT_MENU(HtmlLbox_About, MyFrame::OnAbout)
201ca879 VZ	178
9a9b4940 VZ	179	EVT_MENU(HtmlLbox_SetBgCol, MyFrame::OnSetBgCol)
	180	EVT_MENU(HtmlLbox_SetSelBgCol, MyFrame::OnSetSelBgCol)
	181	EVT_MENU(HtmlLbox_SetSelFgCol, MyFrame::OnSetSelFgCol)
5f732810 VZ	182
	183	EVT_UPDATE_UI(HtmlLbox_SelectAll, MyFrame::OnUpdateUISelectAll)
	184
	185
201ca879 VZ	186	EVT_LISTBOX(wxID_ANY, MyFrame::OnLboxSelect)
	187	EVT_LISTBOX_DCLICK(wxID_ANY, MyFrame::OnLboxDClick)
	188	END_EVENT_TABLE()
	189
201ca879 VZ	190	IMPLEMENT_APP(MyApp)
	191
	192	// ============================================================================
5f732810	193	// MyFrame
201ca879 VZ	194	// ============================================================================
	195
	196	// ----------------------------------------------------------------------------
5f732810	197	// MyFrame ctor/dtor
201ca879 VZ	198	// ----------------------------------------------------------------------------
	199
	200	// frame constructor
	201	MyFrame::MyFrame()
07850a49	202	: wxFrame(NULL, wxID_ANY, _T("HtmlLbox wxWidgets Sample"),
201ca879 VZ	203	wxDefaultPosition, wxSize(400, 500))
	204	{
	205	// set the frame icon
b6cf9ad0	206	SetIcon(wxIcon(sample_xpm));
201ca879 VZ	207
	208	#if wxUSE_MENUS
	209	// create a menu bar
	210	wxMenu *menuFile = new wxMenu;
5f732810 VZ	211	menuFile->Append(HtmlLbox_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
	212
	213	// create our specific menu
	214	wxMenu *menuHLbox = new wxMenu;
	215	menuHLbox->Append(HtmlLbox_SetMargins,
	216	_T("Set &margins...\tCtrl-G"),
	217	_T("Change the margins around the items"));
	218	menuHLbox->AppendCheckItem(HtmlLbox_DrawSeparator,
9a9b4940	219	_T("&Draw separators\tCtrl-D"),
5f732810 VZ	220	_T("Toggle drawing separators between cells"));
	221	menuHLbox->AppendSeparator();
	222	menuHLbox->AppendCheckItem(HtmlLbox_ToggleMulti,
	223	_T("&Multiple selection\tCtrl-M"),
	224	_T("Toggle multiple selection on/off"));
	225	menuHLbox->AppendSeparator();
	226	menuHLbox->Append(HtmlLbox_SelectAll, _T("Select &all items\tCtrl-A"));
1d41ed0a	227	menuHLbox->Append(HtmlLbox_UpdateItem, _T("Update &first item\tCtrl-U"));
9a9b4940 VZ	228	menuHLbox->AppendSeparator();
	229	menuHLbox->Append(HtmlLbox_SetBgCol, _T("Set &background...\tCtrl-B"));
	230	menuHLbox->Append(HtmlLbox_SetSelBgCol,
	231	_T("Set &selection background...\tCtrl-S"));
	232	menuHLbox->AppendCheckItem(HtmlLbox_SetSelFgCol,
	233	_T("Keep &foreground in selection\tCtrl-F"));
201ca879 VZ	234
	235	// the "About" item should be in the help menu
	236	wxMenu *helpMenu = new wxMenu;
	237	helpMenu->Append(HtmlLbox_About, _T("&About...\tF1"), _T("Show about dialog"));
	238
201ca879 VZ	239	// now append the freshly created menu to the menu bar...
	240	wxMenuBar *menuBar = new wxMenuBar();
	241	menuBar->Append(menuFile, _T("&File"));
5f732810	242	menuBar->Append(menuHLbox, _T("&Listbox"));
201ca879 VZ	243	menuBar->Append(helpMenu, _T("&Help"));
201ca879 VZ	244
5f732810 VZ	245	menuBar->Check(HtmlLbox_DrawSeparator, true);
5f732810 VZ	246
201ca879 VZ	247	// ... and attach this menu bar to the frame
	248	SetMenuBar(menuBar);
	249	#endif // wxUSE_MENUS
	250
	251	#if wxUSE_STATUSBAR
	252	// create a status bar just for fun (by default with 1 pane only)
	253	CreateStatusBar(2);
be5a51fb	254	SetStatusText(_T("Welcome to wxWidgets!"));
201ca879 VZ	255	#endif // wxUSE_STATUSBAR
	256
	257	// create the child controls
5f732810	258	m_hlbox = new MyHtmlListBox(this);
07850a49	259	wxTextCtrl *text = new wxTextCtrl(this, wxID_ANY, _T(""),
201ca879 VZ	260	wxDefaultPosition, wxDefaultSize,
	261	wxTE_MULTILINE);
	262	delete wxLog::SetActiveTarget(new wxLogTextCtrl(text));
	263
	264	// and lay them out
	265	wxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
8613d47b	266	sizer->Add(m_hlbox, 1, wxGROW);
201ca879 VZ	267	sizer->Add(text, 1, wxGROW);
	268
	269	SetSizer(sizer);
	270	}
	271
	272	MyFrame::~MyFrame()
	273	{
	274	delete wxLog::SetActiveTarget(NULL);
	275	}
	276
5f732810 VZ	277	// ----------------------------------------------------------------------------
	278	// menu event handlers
	279	// ----------------------------------------------------------------------------
	280
201ca879 VZ	281	void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
201ca879 VZ	282	{
07850a49 WS	283	// true is to force the frame to close
07850a49 WS	284	Close(true);
201ca879 VZ	285	}
	286
	287	void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
	288	{
	289	wxMessageBox(_T("This sample shows wxHtmlListBox class.\n")
	290	_T("\n")
62b45e06	291	_T("(c) 2003 Vadim Zeitlin"),
201ca879 VZ	292	_T("About HtmlLbox"),
	293	wxOK \| wxICON_INFORMATION,
	294	this);
	295	}
	296
9a9b4940	297	void MyFrame::OnSetMargins(wxCommandEvent& WXUNUSED(event))
5f732810 VZ	298	{
	299	long margin = wxGetNumberFromUser
	300	(
	301	_T("Enter the margins to use for the listbox items."),
	302	_T("Margin: "),
	303	_T("HtmlLbox: Set the margins"),
	304	0, 0, 20,
	305	this
	306	);
	307
	308	if ( margin != -1 )
	309	{
	310	m_hlbox->SetMargins(margin, margin);
	311	m_hlbox->RefreshAll();
	312	}
	313	}
	314
	315	void MyFrame::OnToggleMulti(wxCommandEvent& event)
	316	{
	317	// we need to recreate the listbox
	318	wxSizer *sizer = GetSizer();
	319	sizer->Detach(m_hlbox);
	320	delete m_hlbox;
	321
	322	m_hlbox = new MyHtmlListBox(this, event.IsChecked());
	323	sizer->Prepend(m_hlbox, 1, wxGROW);
	324
	325	sizer->Layout();
	326	}
	327
9a9b4940	328	void MyFrame::OnSelectAll(wxCommandEvent& WXUNUSED(event))
5f732810	329	{
4636a1e8	330	m_hlbox->SelectAll();
5f732810 VZ	331	}
	332
	333	void MyFrame::OnUpdateUISelectAll(wxUpdateUIEvent& event)
	334	{
	335	event.Enable( m_hlbox && m_hlbox->HasMultipleSelection() );
	336	}
	337
1d41ed0a VZ	338	void MyFrame::OnUpdateItem(wxCommandEvent& WXUNUSED(event))
	339	{
	340	m_hlbox->UpdateFirstItem();
	341	}
	342
9a9b4940 VZ	343	void MyFrame::OnSetBgCol(wxCommandEvent& WXUNUSED(event))
	344	{
	345	wxColour col = wxGetColourFromUser(this, m_hlbox->GetBackgroundColour());
	346	if ( col.Ok() )
	347	{
	348	m_hlbox->SetBackgroundColour(col);
	349	m_hlbox->Refresh();
	350
8520f137	351	#if wxUSE_STATUSBAR
9a9b4940	352	SetStatusText(_T("Background colour changed."));
8520f137	353	#endif // wxUSE_STATUSBAR
9a9b4940 VZ	354	}
	355	}
	356
	357	void MyFrame::OnSetSelBgCol(wxCommandEvent& WXUNUSED(event))
	358	{
	359	wxColour col = wxGetColourFromUser(this, m_hlbox->GetSelectionBackground());
	360	if ( col.Ok() )
	361	{
	362	m_hlbox->SetSelectionBackground(col);
	363	m_hlbox->Refresh();
	364
8520f137	365	#if wxUSE_STATUSBAR
9a9b4940	366	SetStatusText(_T("Selection background colour changed."));
8520f137	367	#endif // wxUSE_STATUSBAR
9a9b4940 VZ	368	}
	369	}
	370
	371	void MyFrame::OnSetSelFgCol(wxCommandEvent& event)
	372	{
	373	m_hlbox->SetChangeSelFg(!event.IsChecked());
	374	m_hlbox->Refresh();
	375	}
	376
5f732810 VZ	377	// ----------------------------------------------------------------------------
	378	// listbox event handlers
	379	// ----------------------------------------------------------------------------
	380
	381	void MyFrame::OnLboxSelect(wxCommandEvent& event)
	382	{
	383	wxLogMessage(_T("Listbox selection is now %ld."), event.GetInt());
	384
	385	if ( m_hlbox->HasMultipleSelection() )
	386	{
	387	wxString s;
	388
	389	bool first = true;
	390	unsigned long cookie;
	391	for ( int item = m_hlbox->GetFirstSelected(cookie);
	392	item != wxNOT_FOUND;
	393	item = m_hlbox->GetNextSelected(cookie) )
	394	{
	395	if ( first )
	396	first = false;
	397	else
	398	s << _T(", ");
	399
	400	s << item;
	401	}
	402
	403	if ( !s.empty() )
	404	wxLogMessage(_T("Selected items: %s"), s.c_str());
	405	}
	406
8520f137	407	#if wxUSE_STATUSBAR
5f732810 VZ	408	SetStatusText(wxString::Format(
	409	_T("# items selected = %lu"),
	410	(unsigned long)m_hlbox->GetSelectedCount()
	411	));
8520f137	412	#endif // wxUSE_STATUSBAR
5f732810 VZ	413	}
	414
	415	// ============================================================================
	416	// MyHtmlListBox
	417	// ============================================================================
	418
9a9b4940	419	MyHtmlListBox::MyHtmlListBox(wxWindow *parent, bool multi)
07850a49	420	: wxHtmlListBox(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize,
9a9b4940 VZ	421	multi ? wxLB_MULTIPLE : 0)
	422	{
	423	m_change = true;
1d41ed0a VZ	424	m_firstItemUpdated = false;
1d41ed0a VZ	425
9a9b4940 VZ	426
	427	SetMargins(5, 5);
	428
	429	#ifdef USE_HTML_FILE
c2a331e0	430	if ( !m_file.Open(_T("results")) )
9a9b4940	431	{
c2a331e0	432	wxLogError(_T("Failed to open results file"));
9a9b4940 VZ	433	}
	434	else
	435	{
	436	SetItemCount(m_file.GetLineCount());
	437	}
	438	#else
4636a1e8	439	SetItemCount(1000);
9a9b4940 VZ	440	#endif
9a9b4940 VZ	441
4636a1e8	442	SetSelection(3);
9a9b4940 VZ	443	}
9a9b4940 VZ	444
5f732810 VZ	445	void MyHtmlListBox::OnDrawSeparator(wxDC& dc, wxRect& rect, size_t) const
	446	{
	447	if ( ((MyFrame *)GetParent())->
	448	GetMenuBar()->IsChecked(HtmlLbox_DrawSeparator) )
	449	{
	450	dc.SetPen(*wxBLACK_DASHED_PEN);
	451	dc.DrawLine(rect.x, rect.y, rect.GetRight(), rect.y);
	452	dc.DrawLine(rect.x, rect.GetBottom(), rect.GetRight(), rect.GetBottom());
	453	}
	454	}
	455
9a9b4940 VZ	456	wxString MyHtmlListBox::OnGetItem(size_t n) const
9a9b4940 VZ	457	{
1d41ed0a VZ	458	if ( !n && m_firstItemUpdated )
	459	{
	460	return wxString::Format(_T("<h1><b>Just updated</b></h1>"));
	461	}
	462
9a9b4940 VZ	463	#ifdef USE_HTML_FILE
	464	wxString s;
	465	if ( m_file.IsOpened() )
	466	s = m_file[n];
	467
	468	return s;
	469	#else
	470	int level = n % 6 + 1;
	471	return wxString::Format(_T("<h%d><font color=#%2x%2x%2x>")
	472	_T("Item</font> <b>%lu</b>")
	473	_T("</h%d>"),
	474	level,
1d41ed0a VZ	475	abs((int)n - 192) % 256,
	476	abs((int)n - 256) % 256,
	477	abs((int)n - 128) % 256,
9a9b4940 VZ	478	(unsigned long)n, level);
	479	#endif
	480	}
	481
	482	wxColour MyHtmlListBox::GetSelectedTextColour(const wxColour& colFg) const
	483	{
	484	return m_change ? wxHtmlListBox::GetSelectedTextColour(colFg) : colFg;
	485	}
	486
1d41ed0a VZ	487	void MyHtmlListBox::UpdateFirstItem()
	488	{
	489	m_firstItemUpdated = !m_firstItemUpdated;
	490
	491	RefreshLine(0);
	492	}
	493