/////////////////////////////////////////////////////////////////////////////
// Name: htmllbox.cpp
-// Purpose: HtmlLbox wxWindows sample
+// Purpose: HtmlLbox wxWidgets sample
// Author: Vadim Zeitlin
// Modified by:
// Created: 31.05.03
// RCS-ID: $Id$
-// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
+// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#pragma hdrstop
#endif
-// for all others, include the necessary headers (this file is usually all you
-// need because it includes almost all "standard" wxWindows headers)
+// 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/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
+
// ----------------------------------------------------------------------------
// resources
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
-class MyApp : public wxApp
+// to use wxHtmlListBox you must derive a new class from it as you must
+// implement pure virtual OnGetItem()
+class MyHtmlListBox : public wxHtmlListBox
{
public:
- virtual bool OnInit();
+ 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
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
- void OnLboxSelect(wxCommandEvent& event)
- {
- wxLogMessage(_T("Listbox selection is now %ld."), event.GetInt());
- }
+ 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:
- // any class wishing to process wxWindows events must use this macro
+ MyHtmlListBox *m_hlbox;
+
+ // any class wishing to process wxWidgets events must use this macro
DECLARE_EVENT_TABLE()
};
-// to use wxHtmlListBox you must derive a new class from it as you must
-// implement pure virtual OnGetItem()
-class MyHtmlListBox : public wxHtmlListBox
+class MyApp : public wxApp
{
public:
- MyHtmlListBox(wxWindow *parent) : wxHtmlListBox(parent)
- {
- SetItemCount(1000);
- SetSelection(10);
- SetMargins(5, 5);
- }
-
-protected:
- virtual wxString OnGetItem(size_t n) const
- {
- 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(n - 192) % 256,
- abs(n - 256) % 256,
- abs(n - 128) % 256,
- (unsigned long)n, level);
- }
-
- virtual void OnDrawSeparator(wxDC& dc,
- wxRect& rect,
- size_t WXUNUSED(n)) const
- {
- 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());
- }
-
+ virtual bool OnInit() { (new MyFrame())->Show(); return true; }
};
// ----------------------------------------------------------------------------
// 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)
};
// ----------------------------------------------------------------------------
-// event tables and other macros for wxWindows
+// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------
-// the event tables connect the wxWindows 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.
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()
-// Create a new application object: this macro will allow wxWindows 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
+// MyFrame
// ============================================================================
// ----------------------------------------------------------------------------
-// the application class
-// ----------------------------------------------------------------------------
-
-// 'Main program' equivalent: the program execution "starts" here
-bool MyApp::OnInit()
-{
- (new MyFrame())->Show();
-
- return TRUE;
-}
-
-// ----------------------------------------------------------------------------
-// main frame
+// MyFrame ctor/dtor
// ----------------------------------------------------------------------------
// frame constructor
MyFrame::MyFrame()
- : wxFrame(NULL, -1, _T("HtmlLbox wxWindows Sample"),
+ : wxFrame(NULL, wxID_ANY, _T("HtmlLbox wxWidgets Sample"),
wxDefaultPosition, wxSize(400, 500))
{
// set the frame icon
#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"));
- menuFile->Append(HtmlLbox_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
-
// 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 wxWindows!"));
+ SetStatusText(_T("Welcome to wxWidgets!"));
#endif // wxUSE_STATUSBAR
// create the child controls
- MyHtmlListBox *hlbox = new MyHtmlListBox(this);
- wxTextCtrl *text = new wxTextCtrl(this, -1, _T(""),
+ 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(hlbox, 1, wxGROW);
+ sizer->Add(m_hlbox, 1, wxGROW);
sizer->Add(text, 1, wxGROW);
SetSizer(sizer);
delete wxLog::SetActiveTarget(NULL);
}
-// event handlers
+// ----------------------------------------------------------------------------
+// menu event handlers
+// ----------------------------------------------------------------------------
+
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
- // TRUE is to force the frame to close
- Close(TRUE);
+ // 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("© 2003 Vadim Zeitlin"),
+ _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);
+}
+
projects / wxWidgets.git / blobdiff