529b7f71bd
Use generic folder dialog for WinCE git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21986 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
485 lines
13 KiB
C++
485 lines
13 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: caret.cpp
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// Purpose: wxCaret sample
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// Author: Robert Roebling
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// Modified by:
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// Created: 04/01/98
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// RCS-ID: $Id$
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// Copyright: (c) wxWindows team
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// Licence: wxWindows licence
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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 (this file is usually all you
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// need because it includes almost all <standard< wxWindows headers
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#include "wx/log.h"
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#endif
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#include "wx/caret.h"
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// ----------------------------------------------------------------------------
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// ressources
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// ----------------------------------------------------------------------------
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// the application icon
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#if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__)
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#include "mondrian.xpm"
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#endif
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// ----------------------------------------------------------------------------
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// private classes
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// ----------------------------------------------------------------------------
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// Define a new application type, each program should derive a class from wxApp
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class MyApp : public wxApp
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{
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public:
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// override base class virtuals
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// ----------------------------
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// this one is called on application startup and is a good place for the app
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// initialization (doing it here and not in the ctor allows to have an error
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// return: if OnInit() returns false, the application terminates)
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virtual bool OnInit();
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};
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// MyCanvas is a canvas on which you can type
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class MyCanvas: public wxScrolledWindow
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{
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public:
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MyCanvas() { }
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MyCanvas( wxWindow *parent );
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~MyCanvas();
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wxChar& CharAt(int x, int y) { return *(m_text + x + m_xChars * y); }
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// operations
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void SetFontSize(int fontSize);
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void CreateCaret();
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void MoveCaret(int x, int y);
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// caret movement
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void Home() { m_xCaret = 0; }
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void End() { m_xCaret = m_xChars - 1; }
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void FirstLine() { m_yCaret = 0; }
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void LastLine() { m_yCaret = m_yChars - 1; }
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void PrevChar() { if ( !m_xCaret-- ) { End(); PrevLine(); } }
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void NextChar() { if ( ++m_xCaret == m_xChars ) { Home(); NextLine(); } }
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void PrevLine() { if ( !m_yCaret-- ) LastLine(); }
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void NextLine() { if ( ++m_yCaret == m_yChars ) FirstLine(); }
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// event handlers
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void OnPaint( wxPaintEvent &event );
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void OnSize( wxSizeEvent &event );
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void OnChar( wxKeyEvent &event );
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private:
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// move the caret to m_xCaret, m_yCaret
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void DoMoveCaret();
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// update the geometry
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void ChangeSize();
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wxFont m_font;
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// the margin around the text (looks nicer)
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int m_xMargin, m_yMargin;
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// size (in pixels) of one character
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long m_widthChar, m_heightChar;
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// position (in text coords) of the caret
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int m_xCaret, m_yCaret;
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// the size (in text coords) of the window
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int m_xChars, m_yChars;
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// the text
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wxChar *m_text;
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DECLARE_DYNAMIC_CLASS(MyCanvas)
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DECLARE_EVENT_TABLE()
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};
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// Define a new frame type: this is going to be our main frame
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class MyFrame : public wxFrame
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{
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public:
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// ctor(s)
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MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
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// event handlers (these functions should _not_ be virtual)
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void OnQuit(wxCommandEvent& event);
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void OnAbout(wxCommandEvent& event);
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void OnSetBlinkTime(wxCommandEvent& event);
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void OnSetFontSize(wxCommandEvent& event);
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void OnCaretMove(wxCommandEvent& event);
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private:
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MyCanvas *m_canvas;
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// any class wishing to process wxWindows events must use this macro
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DECLARE_EVENT_TABLE()
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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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Caret_Quit = 1,
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Caret_About,
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Caret_SetBlinkTime,
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Caret_SetFontSize,
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Caret_Move,
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// controls start here (the numbers are, of course, arbitrary)
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Caret_Text = 1000
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};
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// ----------------------------------------------------------------------------
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// event tables and other macros for wxWindows
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// ----------------------------------------------------------------------------
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// the event tables connect the wxWindows events with the functions (event
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// handlers) which process them. It can be also done at run-time, but for the
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// simple menu events like this the static method is much simpler.
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BEGIN_EVENT_TABLE(MyFrame, wxFrame)
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EVT_MENU(Caret_Quit, MyFrame::OnQuit)
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EVT_MENU(Caret_About, MyFrame::OnAbout)
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EVT_MENU(Caret_SetBlinkTime, MyFrame::OnSetBlinkTime)
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EVT_MENU(Caret_SetFontSize, MyFrame::OnSetFontSize)
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EVT_MENU(Caret_Move, MyFrame::OnCaretMove)
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END_EVENT_TABLE()
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// Create a new application object: this macro will allow wxWindows to create
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// the application object during program execution (it's better than using a
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// static object for many reasons) and also declares the accessor function
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// wxGetApp() which will return the reference of the right type (i.e. MyApp and
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// not wxApp)
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IMPLEMENT_APP(MyApp)
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// the application class
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// ----------------------------------------------------------------------------
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// `Main program' equivalent: the program execution "starts" here
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bool MyApp::OnInit()
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{
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// create and show the main application window
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MyFrame *frame = new MyFrame(_T("Caret wxWindows sample"),
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wxPoint(50, 50), wxSize(450, 340));
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frame->Show(TRUE);
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// success: wxApp::OnRun() will be called which will enter the main message
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// loop and the application will run. If we returned FALSE here, the
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// application would exit immediately.
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return TRUE;
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}
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// ----------------------------------------------------------------------------
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// main frame
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// ----------------------------------------------------------------------------
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// frame constructor
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MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
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: wxFrame((wxFrame *)NULL, -1, title, pos, size)
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{
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// set the frame icon
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SetIcon(wxICON(mondrian));
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// create a menu bar
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wxMenu *menuFile = new wxMenu;
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menuFile->Append(Caret_SetBlinkTime, _T("&Blink time...\tCtrl-B"));
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menuFile->Append(Caret_SetFontSize, _T("&Font size...\tCtrl-S"));
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menuFile->Append(Caret_Move, _T("&Move caret\tCtrl-C"));
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menuFile->AppendSeparator();
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menuFile->Append(Caret_About, _T("&About...\tCtrl-A"), _T("Show about dialog"));
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menuFile->AppendSeparator();
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menuFile->Append(Caret_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
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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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// ... and attach this menu bar to the frame
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SetMenuBar(menuBar);
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m_canvas = new MyCanvas(this);
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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 wxWindows!"));
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}
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// event handlers
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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("The caret wxWindows sample.\n<EFBFBD> 1999 Vadim Zeitlin"),
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_T("About Caret"), wxOK | wxICON_INFORMATION, this);
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}
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void MyFrame::OnCaretMove(wxCommandEvent& WXUNUSED(event))
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{
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m_canvas->MoveCaret(10, 10);
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}
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void MyFrame::OnSetBlinkTime(wxCommandEvent& WXUNUSED(event))
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{
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long blinkTime = wxGetNumberFromUser
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(
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_T("The caret blink time is the time between two blinks"),
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_T("Time in milliseconds:"),
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_T("wxCaret sample"),
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wxCaret::GetBlinkTime(), 0, 10000,
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this
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);
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if ( blinkTime != -1 )
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{
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wxCaret::SetBlinkTime((int)blinkTime);
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m_canvas->CreateCaret();
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wxLogStatus(this, _T("Blink time set to %ld milliseconds."), blinkTime);
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}
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}
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void MyFrame::OnSetFontSize(wxCommandEvent& WXUNUSED(event))
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{
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long fontSize = wxGetNumberFromUser
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(
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_T("The font size also determines the caret size so\nthis demonstrates resizing the caret."),
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_T("Font size (in points):"),
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_T("wxCaret sample"),
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12, 1, 100,
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this
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);
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if ( fontSize != -1 )
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{
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m_canvas->SetFontSize((int)fontSize);
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}
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}
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// ----------------------------------------------------------------------------
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// MyCanvas
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// ----------------------------------------------------------------------------
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IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
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BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
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EVT_PAINT(MyCanvas::OnPaint)
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EVT_SIZE(MyCanvas::OnSize)
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EVT_CHAR(MyCanvas::OnChar)
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END_EVENT_TABLE()
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MyCanvas::MyCanvas( wxWindow *parent )
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: wxScrolledWindow( parent, -1,
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wxDefaultPosition, wxDefaultSize,
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wxSUNKEN_BORDER )
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{
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m_text = (wxChar *)NULL;
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SetBackgroundColour(*wxWHITE);
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SetFontSize(12);
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m_xCaret = m_yCaret =
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m_xChars = m_yChars = 0;
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m_xMargin = m_yMargin = 5;
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CreateCaret();
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}
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MyCanvas::~MyCanvas()
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{
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free(m_text);
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}
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void MyCanvas::CreateCaret()
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{
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wxCaret *caret = new wxCaret(this, m_widthChar, m_heightChar);
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SetCaret(caret);
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caret->Move(m_xMargin, m_yMargin);
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caret->Show();
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}
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void MyCanvas::SetFontSize(int fontSize)
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{
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m_font = wxFont(fontSize, wxFONTFAMILY_TELETYPE,
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wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL);
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wxClientDC dc(this);
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dc.SetFont(m_font);
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m_heightChar = dc.GetCharHeight();
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m_widthChar = dc.GetCharWidth();
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wxCaret *caret = GetCaret();
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if ( caret )
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{
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caret->SetSize(m_widthChar, m_heightChar);
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ChangeSize();
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}
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}
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void MyCanvas::MoveCaret(int x, int y)
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{
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m_xCaret = x;
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m_yCaret = y;
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DoMoveCaret();
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}
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void MyCanvas::DoMoveCaret()
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{
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wxLogStatus(_T("Caret is at (%d, %d)"), m_xCaret, m_yCaret);
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GetCaret()->Move(m_xMargin + m_xCaret * m_widthChar,
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m_yMargin + m_yCaret * m_heightChar);
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}
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void MyCanvas::OnSize(wxSizeEvent& event)
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{
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ChangeSize();
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event.Skip();
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}
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void MyCanvas::ChangeSize()
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{
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wxSize size = GetClientSize();
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m_xChars = (size.x - 2*m_xMargin) / m_widthChar;
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m_yChars = (size.y - 2*m_yMargin) / m_heightChar;
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if ( !m_xChars )
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m_xChars = 1;
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if ( !m_yChars )
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m_yChars = 1;
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free(m_text);
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m_text = (wxChar *)calloc(m_xChars * m_yChars, sizeof(wxChar));
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wxFrame *frame = wxDynamicCast(GetParent(), wxFrame);
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if ( frame && frame->GetStatusBar() )
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{
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wxString msg;
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msg.Printf(_T("Panel size is (%d, %d)"), m_xChars, m_yChars);
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frame->SetStatusText(msg, 1);
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}
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}
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// NB: this method is horrible inefficient especially because the caret
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// needs to be redrawn often and in this case we only have to redraw
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// the caret location and not the entire window - in a real program we
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// would use GetUpdateRegion() and iterate over rectangles it contains
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void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
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{
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wxCaretSuspend cs(this);
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wxPaintDC dc( this );
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PrepareDC( dc );
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dc.Clear();
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dc.SetFont( m_font );
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for ( int y = 0; y < m_yChars; y++ )
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{
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wxString line;
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for ( int x = 0; x < m_xChars; x++ )
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{
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wxChar ch = CharAt(x, y);
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if ( !ch )
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ch = _T(' ');
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line += ch;
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}
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dc.DrawText( line, m_xMargin, m_yMargin + y * m_heightChar );
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}
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}
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void MyCanvas::OnChar( wxKeyEvent &event )
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{
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switch ( event.GetKeyCode() )
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{
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case WXK_LEFT:
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PrevChar();
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break;
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case WXK_RIGHT:
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NextChar();
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break;
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case WXK_UP:
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PrevLine();
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break;
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case WXK_DOWN:
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NextLine();
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break;
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case WXK_HOME:
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Home();
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break;
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case WXK_END:
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End();
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break;
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case WXK_RETURN:
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Home();
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NextLine();
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break;
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default:
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if ( !event.AltDown() && wxIsprint(event.GetKeyCode()) )
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{
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wxChar ch = (wxChar)event.GetKeyCode();
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CharAt(m_xCaret, m_yCaret) = ch;
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wxCaretSuspend cs(this);
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wxClientDC dc(this);
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dc.SetFont(m_font);
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dc.SetBackgroundMode(wxSOLID); // overwrite old value
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dc.DrawText(ch, m_xMargin + m_xCaret * m_widthChar,
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m_yMargin + m_yCaret * m_heightChar );
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NextChar();
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}
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else
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{
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event.Skip();
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}
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}
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DoMoveCaret();
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}
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