4f4c5fcfdf
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.
645 lines
19 KiB
C++
645 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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// 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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// 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 override;
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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 override;
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virtual wxColour GetSelectedTextColour(const wxColour& colFg) const override;
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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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wxDECLARE_NO_COPY_CLASS(MyHtmlListBox);
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wxDECLARE_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 OnGetItemRect(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("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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wxDECLARE_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() override { (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_GetItemRect,
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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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wxBEGIN_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_GetItemRect, MyFrame::OnGetItemRect)
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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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wxEND_EVENT_TABLE()
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wxIMPLEMENT_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(nullptr, wxID_ANY, "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));
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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, "Use custom box",
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"Use a wxHtmlListBox virtual class control");
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menuFile->AppendRadioItem(HtmlLbox_SimpleBox, "Use simple box",
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"Use a wxSimpleHtmlListBox control");
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menuFile->AppendSeparator();
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menuFile->Append(HtmlLbox_Quit, "E&xit\tAlt-X", "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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"Set &margins...\tCtrl-G",
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"Change the margins around the items");
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menuHLbox->AppendCheckItem(HtmlLbox_DrawSeparator,
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"&Draw separators\tCtrl-D",
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"Toggle drawing separators between cells");
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menuHLbox->AppendSeparator();
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menuHLbox->AppendCheckItem(HtmlLbox_ToggleMulti,
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"&Multiple selection\tCtrl-M",
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"Toggle multiple selection on/off");
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menuHLbox->AppendSeparator();
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menuHLbox->Append(HtmlLbox_SelectAll, "Select &all items\tCtrl-A");
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menuHLbox->Append(HtmlLbox_UpdateItem, "Update &first item\tCtrl-U");
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menuHLbox->Append(HtmlLbox_GetItemRect, "Show &rectangle of item #10\tCtrl-R");
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menuHLbox->AppendSeparator();
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menuHLbox->Append(HtmlLbox_SetBgCol, "Set &background...\tCtrl-B");
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menuHLbox->Append(HtmlLbox_SetSelBgCol,
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"Set &selection background...\tCtrl-S");
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menuHLbox->AppendCheckItem(HtmlLbox_SetSelFgCol,
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"Keep &foreground in selection\tCtrl-F");
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menuHLbox->AppendSeparator();
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menuHLbox->Append(HtmlLbox_Clear, "&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, "&About\tF1", "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, "&File");
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menuBar->Append(menuHLbox, "&Listbox");
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menuBar->Append(helpMenu, "&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("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, "",
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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(nullptr);
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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, nullptr, 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("<h%d><font color=%s>"
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"Item</font> <b>%lu</b>"
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"</h%d>",
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level,
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clr.GetAsString(wxC2S_HTML_SYNTAX),
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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("This sample shows wxHtmlListBox class.\n"
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"\n"
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"(c) 2003 Vadim Zeitlin",
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"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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"Enter the margins to use for the listbox items.",
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"Margin: ",
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"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::OnGetItemRect(wxCommandEvent& WXUNUSED(event))
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{
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static const int ITEM = 10;
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const wxRect r = m_hlbox->GetItemRect(ITEM);
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wxLogMessage("Rect of item %d: (%d, %d)-(%d, %d)",
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ITEM, r.x, r.y, r.x + r.width, r.y + r.height);
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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.IsOk() )
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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("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.IsOk() )
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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("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("The url '%s' has been clicked!", event.GetLinkInfo().GetHref());
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if (GetMyBox())
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{
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GetMyBox()->m_linkClicked = true;
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GetMyBox()->RefreshRow(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("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("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("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) )
|
|
{
|
|
if ( first )
|
|
first = false;
|
|
else
|
|
s << ", ";
|
|
|
|
s << item;
|
|
}
|
|
|
|
if ( !s.empty() )
|
|
{
|
|
wxLogMessage("Selected items: %s", s);
|
|
}
|
|
}
|
|
|
|
#if wxUSE_STATUSBAR
|
|
SetStatusText(wxString::Format(
|
|
"# items selected = %lu",
|
|
(unsigned long)m_hlbox->GetSelectedCount()
|
|
));
|
|
#endif // wxUSE_STATUSBAR
|
|
}
|
|
|
|
// ============================================================================
|
|
// MyHtmlListBox
|
|
// ============================================================================
|
|
|
|
wxIMPLEMENT_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("results") )
|
|
{
|
|
wxLogError("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 "<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("<h%d><font color=%s>"
|
|
"Item</font> <b>%lu</b>"
|
|
"</h%d>",
|
|
level,
|
|
clr.GetAsString(wxC2S_HTML_SYNTAX),
|
|
(unsigned long)n, level);
|
|
if ( n == 1 )
|
|
{
|
|
if ( !m_linkClicked )
|
|
label += "<a href='1'>Click here...</a>";
|
|
else
|
|
label += "<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;
|
|
|
|
RefreshRow(0);
|
|
}
|