4db94043cb
Files correlati : Commento : Spostamento in libraries delle librerie esterne di Campo per una maggiore pulizia e organizzazione git-svn-id: svn://10.65.10.50/branches/R_10_00@24150 c028cbd2-c16b-5b4b-a496-9718f37d4682
636 lines
19 KiB
C++
636 lines
19 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: htmllbox.cpp
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// Purpose: HtmlLbox wxWidgets sample
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 31.05.03
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// RCS-ID: $Id: htlbox.cpp 51132 2008-01-09 14:43:15Z VZ $
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// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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// for all others, include the necessary headers
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#ifndef WX_PRECOMP
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#include "wx/app.h"
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#include "wx/frame.h"
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#include "wx/log.h"
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#include "wx/textdlg.h"
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#include "wx/sizer.h"
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#include "wx/menu.h"
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#include "wx/msgdlg.h"
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#include "wx/textctrl.h"
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#include "wx/dc.h"
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#include "wx/icon.h"
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#endif
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#include "wx/colordlg.h"
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#include "wx/numdlg.h"
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#include "wx/htmllbox.h"
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// you can also have a file containing HTML strings for testing, enable this if
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// you want to use it
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//#define USE_HTML_FILE
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#ifdef USE_HTML_FILE
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#include "wx/textfile.h"
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#endif
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#include "../sample.xpm"
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// ----------------------------------------------------------------------------
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// private classes
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// ----------------------------------------------------------------------------
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// to use wxHtmlListBox you must derive a new class from it as you must
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// implement pure virtual OnGetItem()
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class MyHtmlListBox : public wxHtmlListBox
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{
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public:
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MyHtmlListBox() { }
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MyHtmlListBox(wxWindow *parent, bool multi = false);
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void SetChangeSelFg(bool change) { m_change = change; }
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void UpdateFirstItem();
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protected:
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// override this method to return data to be shown in the listbox (this is
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// mandatory)
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virtual wxString OnGetItem(size_t n) const;
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// change the appearance by overriding these functions (this is optional)
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virtual void OnDrawSeparator(wxDC& dc, wxRect& rect, size_t n) const;
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virtual wxColour GetSelectedTextColour(const wxColour& colFg) const;
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// flag telling us whether we should use fg colour even for the selected
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// item
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bool m_change;
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// flag which we toggle to update the first items text in OnGetItem()
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bool m_firstItemUpdated;
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public:
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// flag which we toggle when the user clicks on the link in 2nd item
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// to change 2nd item's text
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bool m_linkClicked;
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#ifdef USE_HTML_FILE
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wxTextFile m_file;
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#endif
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DECLARE_NO_COPY_CLASS(MyHtmlListBox)
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DECLARE_DYNAMIC_CLASS(MyHtmlListBox)
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};
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class MyFrame : public wxFrame
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{
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public:
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MyFrame();
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virtual ~MyFrame();
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// event handlers
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void OnSimpleOrCustomBox(wxCommandEvent& event);
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void OnQuit(wxCommandEvent& event);
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void OnAbout(wxCommandEvent& event);
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void OnSetMargins(wxCommandEvent& event);
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void OnDrawSeparator(wxCommandEvent&) { m_hlbox->RefreshAll(); }
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void OnToggleMulti(wxCommandEvent& event);
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void OnSelectAll(wxCommandEvent& event);
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void OnUpdateItem(wxCommandEvent& event);
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void OnSetBgCol(wxCommandEvent& event);
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void OnSetSelBgCol(wxCommandEvent& event);
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void OnSetSelFgCol(wxCommandEvent& event);
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void OnClear(wxCommandEvent& event);
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void OnUpdateUISelectAll(wxUpdateUIEvent& event);
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void OnLboxSelect(wxCommandEvent& event);
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void OnLboxDClick(wxCommandEvent& event)
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{
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wxLogMessage(_T("Listbox item %d double clicked."), event.GetInt());
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}
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void OnHtmlLinkClicked(wxHtmlLinkEvent& event);
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void OnHtmlCellHover(wxHtmlCellEvent &event);
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void OnHtmlCellClicked(wxHtmlCellEvent &event);
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wxSimpleHtmlListBox *GetSimpleBox()
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{ return wxDynamicCast(m_hlbox, wxSimpleHtmlListBox); }
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MyHtmlListBox *GetMyBox()
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{ return wxDynamicCast(m_hlbox, MyHtmlListBox); }
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void CreateBox();
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private:
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wxHtmlListBox *m_hlbox;
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// any class wishing to process wxWidgets events must use this macro
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DECLARE_EVENT_TABLE()
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};
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class MyApp : public wxApp
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{
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public:
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virtual bool OnInit() { (new MyFrame())->Show(); return true; }
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};
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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// IDs for the controls and the menu commands
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enum
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{
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// menu items
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HtmlLbox_CustomBox = 1,
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HtmlLbox_SimpleBox,
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HtmlLbox_Quit,
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HtmlLbox_SetMargins,
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HtmlLbox_DrawSeparator,
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HtmlLbox_ToggleMulti,
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HtmlLbox_SelectAll,
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HtmlLbox_UpdateItem,
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HtmlLbox_SetBgCol,
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HtmlLbox_SetSelBgCol,
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HtmlLbox_SetSelFgCol,
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HtmlLbox_Clear,
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// it is important for the id corresponding to the "About" command to have
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// this standard value as otherwise it won't be handled properly under Mac
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// (where it is special and put into the "Apple" menu)
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HtmlLbox_About = wxID_ABOUT
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};
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// ----------------------------------------------------------------------------
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// event tables and other macros for wxWidgets
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// ----------------------------------------------------------------------------
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BEGIN_EVENT_TABLE(MyFrame, wxFrame)
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EVT_MENU(HtmlLbox_CustomBox, MyFrame::OnSimpleOrCustomBox)
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EVT_MENU(HtmlLbox_SimpleBox, MyFrame::OnSimpleOrCustomBox)
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EVT_MENU(HtmlLbox_Quit, MyFrame::OnQuit)
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EVT_MENU(HtmlLbox_SetMargins, MyFrame::OnSetMargins)
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EVT_MENU(HtmlLbox_DrawSeparator, MyFrame::OnDrawSeparator)
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EVT_MENU(HtmlLbox_ToggleMulti, MyFrame::OnToggleMulti)
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EVT_MENU(HtmlLbox_SelectAll, MyFrame::OnSelectAll)
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EVT_MENU(HtmlLbox_UpdateItem, MyFrame::OnUpdateItem)
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EVT_MENU(HtmlLbox_About, MyFrame::OnAbout)
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EVT_MENU(HtmlLbox_SetBgCol, MyFrame::OnSetBgCol)
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EVT_MENU(HtmlLbox_SetSelBgCol, MyFrame::OnSetSelBgCol)
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EVT_MENU(HtmlLbox_SetSelFgCol, MyFrame::OnSetSelFgCol)
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EVT_MENU(HtmlLbox_Clear, MyFrame::OnClear)
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EVT_UPDATE_UI(HtmlLbox_SelectAll, MyFrame::OnUpdateUISelectAll)
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EVT_LISTBOX(wxID_ANY, MyFrame::OnLboxSelect)
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EVT_LISTBOX_DCLICK(wxID_ANY, MyFrame::OnLboxDClick)
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// the HTML listbox's events
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EVT_HTML_LINK_CLICKED(wxID_ANY, MyFrame::OnHtmlLinkClicked)
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EVT_HTML_CELL_HOVER(wxID_ANY, MyFrame::OnHtmlCellHover)
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EVT_HTML_CELL_CLICKED(wxID_ANY, MyFrame::OnHtmlCellClicked)
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END_EVENT_TABLE()
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IMPLEMENT_APP(MyApp)
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// ============================================================================
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// MyFrame
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// ============================================================================
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// ----------------------------------------------------------------------------
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// MyFrame ctor/dtor
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// ----------------------------------------------------------------------------
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// frame constructor
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MyFrame::MyFrame()
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: wxFrame(NULL, wxID_ANY, _T("HtmlLbox wxWidgets Sample"),
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wxDefaultPosition, wxSize(500, 500))
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{
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// set the frame icon
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SetIcon(wxIcon(sample_xpm));
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#if wxUSE_MENUS
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// create a menu bar
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wxMenu *menuFile = new wxMenu;
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menuFile->AppendRadioItem(HtmlLbox_CustomBox, _T("Use custom box"),
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_T("Use a wxHtmlListBox virtual class control"));
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menuFile->AppendRadioItem(HtmlLbox_SimpleBox, _T("Use simple box"),
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_T("Use a wxSimpleHtmlListBox control"));
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menuFile->AppendSeparator();
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menuFile->Append(HtmlLbox_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
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// create our specific menu
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wxMenu *menuHLbox = new wxMenu;
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menuHLbox->Append(HtmlLbox_SetMargins,
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_T("Set &margins...\tCtrl-G"),
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_T("Change the margins around the items"));
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menuHLbox->AppendCheckItem(HtmlLbox_DrawSeparator,
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_T("&Draw separators\tCtrl-D"),
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_T("Toggle drawing separators between cells"));
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menuHLbox->AppendSeparator();
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menuHLbox->AppendCheckItem(HtmlLbox_ToggleMulti,
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_T("&Multiple selection\tCtrl-M"),
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_T("Toggle multiple selection on/off"));
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menuHLbox->AppendSeparator();
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menuHLbox->Append(HtmlLbox_SelectAll, _T("Select &all items\tCtrl-A"));
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menuHLbox->Append(HtmlLbox_UpdateItem, _T("Update &first item\tCtrl-U"));
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menuHLbox->AppendSeparator();
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menuHLbox->Append(HtmlLbox_SetBgCol, _T("Set &background...\tCtrl-B"));
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menuHLbox->Append(HtmlLbox_SetSelBgCol,
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_T("Set &selection background...\tCtrl-S"));
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menuHLbox->AppendCheckItem(HtmlLbox_SetSelFgCol,
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_T("Keep &foreground in selection\tCtrl-F"));
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menuHLbox->AppendSeparator();
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menuHLbox->Append(HtmlLbox_Clear, _T("&Clear\tCtrl-L"));
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// the "About" item should be in the help menu
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wxMenu *helpMenu = new wxMenu;
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helpMenu->Append(HtmlLbox_About, _T("&About...\tF1"), _T("Show about dialog"));
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// now append the freshly created menu to the menu bar...
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wxMenuBar *menuBar = new wxMenuBar();
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menuBar->Append(menuFile, _T("&File"));
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menuBar->Append(menuHLbox, _T("&Listbox"));
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menuBar->Append(helpMenu, _T("&Help"));
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menuBar->Check(HtmlLbox_DrawSeparator, true);
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// ... and attach this menu bar to the frame
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SetMenuBar(menuBar);
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#endif // wxUSE_MENUS
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#if wxUSE_STATUSBAR
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// create a status bar just for fun (by default with 1 pane only)
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CreateStatusBar(2);
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SetStatusText(_T("Welcome to wxWidgets!"));
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#endif // wxUSE_STATUSBAR
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// create the child controls
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CreateBox();
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wxTextCtrl *text = new wxTextCtrl(this, wxID_ANY, _T(""),
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wxDefaultPosition, wxDefaultSize,
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wxTE_MULTILINE);
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delete wxLog::SetActiveTarget(new wxLogTextCtrl(text));
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// and lay them out
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wxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
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sizer->Add(m_hlbox, 2, wxGROW);
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sizer->Add(text, 3, wxGROW);
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SetSizer(sizer);
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}
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MyFrame::~MyFrame()
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{
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delete wxLog::SetActiveTarget(NULL);
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}
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void MyFrame::CreateBox()
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{
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bool multi = GetMenuBar()->IsChecked(HtmlLbox_ToggleMulti);
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if ( GetMenuBar()->IsChecked(HtmlLbox_CustomBox) )
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{
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m_hlbox = new MyHtmlListBox(this, multi);
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}
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else // simple listbox
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{
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m_hlbox = new wxSimpleHtmlListBox(this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
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0, NULL, multi ? wxLB_MULTIPLE : 0);
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// unlike wxHtmlListBox which is abstract, wxSimpleHtmlListBox is a
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// concrete control and doesn't support virtual mode, this we need
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// to add all of its items from the beginning
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wxArrayString arr;
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for (size_t n = 0; n < 1000; n++ )
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{
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wxColour clr((unsigned char)(abs((int)n - 192) % 256),
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(unsigned char)(abs((int)n - 256) % 256),
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(unsigned char)(abs((int)n - 128) % 256));
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int level = n % 6 + 1;
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wxString label = wxString::Format(_T("<h%d><font color=%s>")
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_T("Item</font> <b>%lu</b>")
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_T("</h%d>"),
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level,
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clr.GetAsString(wxC2S_HTML_SYNTAX).c_str(),
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(unsigned long)n, level);
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arr.Add(label);
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}
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GetSimpleBox()->Append(arr);
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}
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}
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// ----------------------------------------------------------------------------
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// menu event handlers
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// ----------------------------------------------------------------------------
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void MyFrame::OnSimpleOrCustomBox(wxCommandEvent& WXUNUSED(event))
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{
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wxWindow *old = m_hlbox;
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// we need to recreate the listbox
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CreateBox();
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GetSizer()->Replace(old, m_hlbox);
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delete old;
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GetSizer()->Layout();
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Refresh();
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}
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void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
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{
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// true is to force the frame to close
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Close(true);
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}
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void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
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{
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wxMessageBox(_T("This sample shows wxHtmlListBox class.\n")
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_T("\n")
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_T("(c) 2003 Vadim Zeitlin"),
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_T("About HtmlLbox"),
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wxOK | wxICON_INFORMATION,
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this);
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}
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void MyFrame::OnSetMargins(wxCommandEvent& WXUNUSED(event))
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{
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long margin = wxGetNumberFromUser
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(
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_T("Enter the margins to use for the listbox items."),
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_T("Margin: "),
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_T("HtmlLbox: Set the margins"),
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0, 0, 20,
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this
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);
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if ( margin != -1 )
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{
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m_hlbox->SetMargins(margin, margin);
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m_hlbox->RefreshAll();
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}
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}
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void MyFrame::OnToggleMulti(wxCommandEvent& WXUNUSED(event))
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{
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wxWindow *old = m_hlbox;
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// we need to recreate the listbox
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CreateBox();
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GetSizer()->Replace(old, m_hlbox);
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delete old;
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GetSizer()->Layout();
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}
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void MyFrame::OnSelectAll(wxCommandEvent& WXUNUSED(event))
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{
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m_hlbox->SelectAll();
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}
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void MyFrame::OnUpdateUISelectAll(wxUpdateUIEvent& event)
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{
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event.Enable( m_hlbox && m_hlbox->HasMultipleSelection() );
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}
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void MyFrame::OnUpdateItem(wxCommandEvent& WXUNUSED(event))
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{
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if (GetMyBox())
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GetMyBox()->UpdateFirstItem();
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}
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void MyFrame::OnSetBgCol(wxCommandEvent& WXUNUSED(event))
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{
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wxColour col = wxGetColourFromUser(this, m_hlbox->GetBackgroundColour());
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if ( col.Ok() )
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{
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m_hlbox->SetBackgroundColour(col);
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m_hlbox->Refresh();
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#if wxUSE_STATUSBAR
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SetStatusText(_T("Background colour changed."));
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#endif // wxUSE_STATUSBAR
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}
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}
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void MyFrame::OnSetSelBgCol(wxCommandEvent& WXUNUSED(event))
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{
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wxColour col = wxGetColourFromUser(this, m_hlbox->GetSelectionBackground());
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if ( col.Ok() )
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{
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m_hlbox->SetSelectionBackground(col);
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m_hlbox->Refresh();
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#if wxUSE_STATUSBAR
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SetStatusText(_T("Selection background colour changed."));
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#endif // wxUSE_STATUSBAR
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}
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}
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void MyFrame::OnSetSelFgCol(wxCommandEvent& event)
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{
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if (GetMyBox())
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{
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GetMyBox()->SetChangeSelFg(!event.IsChecked());
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GetMyBox()->Refresh();
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}
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}
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void MyFrame::OnClear(wxCommandEvent& WXUNUSED(event))
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{
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m_hlbox->Clear();
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}
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void MyFrame::OnHtmlLinkClicked(wxHtmlLinkEvent &event)
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{
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wxLogMessage(wxT("The url '%s' has been clicked!"), event.GetLinkInfo().GetHref().c_str());
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if (GetMyBox())
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{
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GetMyBox()->m_linkClicked = true;
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GetMyBox()->RefreshLine(1);
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}
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}
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void MyFrame::OnHtmlCellHover(wxHtmlCellEvent &event)
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{
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wxLogMessage(wxT("Mouse moved over cell %p at %d;%d"),
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event.GetCell(), event.GetPoint().x, event.GetPoint().y);
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}
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void MyFrame::OnHtmlCellClicked(wxHtmlCellEvent &event)
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{
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wxLogMessage(wxT("Click over cell %p at %d;%d"),
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event.GetCell(), event.GetPoint().x, event.GetPoint().y);
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// if we don't skip the event, OnHtmlLinkClicked won't be called!
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event.Skip();
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}
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// ----------------------------------------------------------------------------
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// listbox event handlers
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// ----------------------------------------------------------------------------
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void MyFrame::OnLboxSelect(wxCommandEvent& event)
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{
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wxLogMessage(_T("Listbox selection is now %d."), event.GetInt());
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if ( m_hlbox->HasMultipleSelection() )
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{
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wxString s;
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bool first = true;
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unsigned long cookie;
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for ( int item = m_hlbox->GetFirstSelected(cookie);
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item != wxNOT_FOUND;
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item = m_hlbox->GetNextSelected(cookie) )
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{
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if ( first )
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first = false;
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else
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s << _T(", ");
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s << item;
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}
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if ( !s.empty() )
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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
|
|
// ============================================================================
|
|
|
|
IMPLEMENT_DYNAMIC_CLASS(MyHtmlListBox, wxHtmlListBox)
|
|
|
|
MyHtmlListBox::MyHtmlListBox(wxWindow *parent, bool multi)
|
|
: wxHtmlListBox(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize,
|
|
multi ? wxLB_MULTIPLE : 0)
|
|
{
|
|
m_change = true;
|
|
m_firstItemUpdated = false;
|
|
m_linkClicked = 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;
|
|
|
|
wxColour clr((unsigned char)(abs((int)n - 192) % 256),
|
|
(unsigned char)(abs((int)n - 256) % 256),
|
|
(unsigned char)(abs((int)n - 128) % 256));
|
|
|
|
wxString label = wxString::Format(_T("<h%d><font color=%s>")
|
|
_T("Item</font> <b>%lu</b>")
|
|
_T("</h%d>"),
|
|
level,
|
|
clr.GetAsString(wxC2S_HTML_SYNTAX).c_str(),
|
|
(unsigned long)n, level);
|
|
if ( n == 1 )
|
|
{
|
|
if ( !m_linkClicked )
|
|
label += _T("<a href='1'>Click here...</a>");
|
|
else
|
|
label += _T("<font color='#9999ff'>Clicked here...</font>");
|
|
}
|
|
|
|
return label;
|
|
#endif
|
|
}
|
|
|
|
wxColour MyHtmlListBox::GetSelectedTextColour(const wxColour& colFg) const
|
|
{
|
|
return m_change ? wxHtmlListBox::GetSelectedTextColour(colFg) : colFg;
|
|
}
|
|
|
|
void MyHtmlListBox::UpdateFirstItem()
|
|
{
|
|
m_firstItemUpdated = !m_firstItemUpdated;
|
|
|
|
RefreshLine(0);
|
|
}
|