9a83f86094
Standardize on using a single macro across all wxWidgets sources and solve the name clash with Sun CC standard headers (see #10660). git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61508 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
491 lines
14 KiB
C++
491 lines
14 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: caret.cpp
|
|
// Purpose: wxCaret sample
|
|
// Author: Robert Roebling
|
|
// Modified by:
|
|
// Created: 04/01/98
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) wxWindows team
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
// For compilers that support precompilation, includes "wx/wx.h".
|
|
#include "wx/wxprec.h"
|
|
|
|
#ifdef __BORLANDC__
|
|
#pragma hdrstop
|
|
#endif
|
|
|
|
// for all others, include the necessary headers (this file is usually all you
|
|
// need because it includes almost all <standard< wxWidgets headers
|
|
#ifndef WX_PRECOMP
|
|
#include "wx/wx.h"
|
|
#include "wx/log.h"
|
|
#endif
|
|
|
|
#include "wx/caret.h"
|
|
#include "wx/numdlg.h"
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// ressources
|
|
// ----------------------------------------------------------------------------
|
|
// the application icon
|
|
#if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__)
|
|
#include "mondrian.xpm"
|
|
#endif
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// private classes
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// Define a new application type, each program should derive a class from wxApp
|
|
class MyApp : public wxApp
|
|
{
|
|
public:
|
|
// override base class virtuals
|
|
// ----------------------------
|
|
|
|
// this one is called on application startup and is a good place for the app
|
|
// initialization (doing it here and not in the ctor allows to have an error
|
|
// return: if OnInit() returns false, the application terminates)
|
|
virtual bool OnInit();
|
|
};
|
|
|
|
// MyCanvas is a canvas on which you can type
|
|
class MyCanvas: public wxScrolledWindow
|
|
{
|
|
public:
|
|
MyCanvas() { }
|
|
MyCanvas( wxWindow *parent );
|
|
~MyCanvas();
|
|
|
|
wxChar& CharAt(int x, int y) { return *(m_text + x + m_xChars * y); }
|
|
|
|
// operations
|
|
void SetFontSize(int fontSize);
|
|
void CreateCaret();
|
|
void MoveCaret(int x, int y);
|
|
|
|
// caret movement
|
|
void Home() { m_xCaret = 0; }
|
|
void End() { m_xCaret = m_xChars - 1; }
|
|
void FirstLine() { m_yCaret = 0; }
|
|
void LastLine() { m_yCaret = m_yChars - 1; }
|
|
void PrevChar() { if ( !m_xCaret-- ) { End(); PrevLine(); } }
|
|
void NextChar() { if ( ++m_xCaret == m_xChars ) { Home(); NextLine(); } }
|
|
void PrevLine() { if ( !m_yCaret-- ) LastLine(); }
|
|
void NextLine() { if ( ++m_yCaret == m_yChars ) FirstLine(); }
|
|
|
|
// event handlers
|
|
void OnPaint( wxPaintEvent &event );
|
|
void OnSize( wxSizeEvent &event );
|
|
void OnChar( wxKeyEvent &event );
|
|
|
|
private:
|
|
// move the caret to m_xCaret, m_yCaret
|
|
void DoMoveCaret();
|
|
|
|
// update the geometry
|
|
void ChangeSize();
|
|
|
|
wxFont m_font;
|
|
|
|
// the margin around the text (looks nicer)
|
|
int m_xMargin, m_yMargin;
|
|
|
|
// size (in pixels) of one character
|
|
long m_widthChar, m_heightChar;
|
|
|
|
// position (in text coords) of the caret
|
|
int m_xCaret, m_yCaret;
|
|
|
|
// the size (in text coords) of the window
|
|
int m_xChars, m_yChars;
|
|
|
|
// the text
|
|
wxChar *m_text;
|
|
|
|
DECLARE_DYNAMIC_CLASS(MyCanvas)
|
|
DECLARE_EVENT_TABLE()
|
|
};
|
|
|
|
|
|
// Define a new frame type: this is going to be our main frame
|
|
class MyFrame : public wxFrame
|
|
{
|
|
public:
|
|
// ctor(s)
|
|
MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
|
|
|
|
// event handlers (these functions should _not_ be virtual)
|
|
void OnQuit(wxCommandEvent& event);
|
|
void OnAbout(wxCommandEvent& event);
|
|
void OnSetBlinkTime(wxCommandEvent& event);
|
|
void OnSetFontSize(wxCommandEvent& event);
|
|
void OnCaretMove(wxCommandEvent& event);
|
|
|
|
private:
|
|
MyCanvas *m_canvas;
|
|
|
|
// any class wishing to process wxWidgets events must use this macro
|
|
DECLARE_EVENT_TABLE()
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// constants
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// IDs for the controls and the menu commands
|
|
enum
|
|
{
|
|
// menu items
|
|
Caret_Quit = 1,
|
|
Caret_About,
|
|
Caret_SetBlinkTime,
|
|
Caret_SetFontSize,
|
|
Caret_Move,
|
|
|
|
// controls start here (the numbers are, of course, arbitrary)
|
|
Caret_Text = 1000
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// event tables and other macros for wxWidgets
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// the event tables connect the wxWidgets 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(Caret_Quit, MyFrame::OnQuit)
|
|
EVT_MENU(Caret_About, MyFrame::OnAbout)
|
|
EVT_MENU(Caret_SetBlinkTime, MyFrame::OnSetBlinkTime)
|
|
EVT_MENU(Caret_SetFontSize, MyFrame::OnSetFontSize)
|
|
EVT_MENU(Caret_Move, MyFrame::OnCaretMove)
|
|
END_EVENT_TABLE()
|
|
|
|
// Create a new application object: this macro will allow wxWidgets 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
|
|
// ============================================================================
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// the application class
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// `Main program' equivalent: the program execution "starts" here
|
|
bool MyApp::OnInit()
|
|
{
|
|
if ( !wxApp::OnInit() )
|
|
return false;
|
|
|
|
// create and show the main application window
|
|
MyFrame *frame = new MyFrame(wxT("Caret wxWidgets sample"),
|
|
wxPoint(50, 50), wxSize(450, 340));
|
|
|
|
frame->Show(true);
|
|
|
|
// success: wxApp::OnRun() will be called which will enter the main message
|
|
// loop and the application will run. If we returned false here, the
|
|
// application would exit immediately.
|
|
return true;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// main frame
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// frame constructor
|
|
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
|
|
: wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
|
|
{
|
|
// set the frame icon
|
|
SetIcon(wxICON(mondrian));
|
|
|
|
// create a menu bar
|
|
wxMenu *menuFile = new wxMenu;
|
|
|
|
menuFile->Append(Caret_SetBlinkTime, wxT("&Blink time...\tCtrl-B"));
|
|
menuFile->Append(Caret_SetFontSize, wxT("&Font size...\tCtrl-S"));
|
|
menuFile->Append(Caret_Move, wxT("&Move caret\tCtrl-C"));
|
|
menuFile->AppendSeparator();
|
|
menuFile->Append(Caret_About, wxT("&About...\tCtrl-A"), wxT("Show about dialog"));
|
|
menuFile->AppendSeparator();
|
|
menuFile->Append(Caret_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program"));
|
|
|
|
// now append the freshly created menu to the menu bar...
|
|
wxMenuBar *menuBar = new wxMenuBar;
|
|
menuBar->Append(menuFile, wxT("&File"));
|
|
|
|
// ... and attach this menu bar to the frame
|
|
SetMenuBar(menuBar);
|
|
|
|
m_canvas = new MyCanvas(this);
|
|
|
|
#if wxUSE_STATUSBAR
|
|
// create a status bar just for fun (by default with 1 pane only)
|
|
CreateStatusBar(2);
|
|
SetStatusText(wxT("Welcome to wxWidgets!"));
|
|
#endif // wxUSE_STATUSBAR
|
|
}
|
|
|
|
|
|
// event handlers
|
|
|
|
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
// true is to force the frame to close
|
|
Close(true);
|
|
}
|
|
|
|
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
wxMessageBox(wxT("The caret wxWidgets sample.\n(c) 1999 Vadim Zeitlin"),
|
|
wxT("About Caret"), wxOK | wxICON_INFORMATION, this);
|
|
}
|
|
|
|
void MyFrame::OnCaretMove(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
m_canvas->MoveCaret(10, 10);
|
|
}
|
|
|
|
void MyFrame::OnSetBlinkTime(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
long blinkTime = wxGetNumberFromUser
|
|
(
|
|
wxT("The caret blink time is the time between two blinks"),
|
|
wxT("Time in milliseconds:"),
|
|
wxT("wxCaret sample"),
|
|
wxCaret::GetBlinkTime(), 0, 10000,
|
|
this
|
|
);
|
|
if ( blinkTime != -1 )
|
|
{
|
|
wxCaret::SetBlinkTime((int)blinkTime);
|
|
m_canvas->CreateCaret();
|
|
wxLogStatus(this, wxT("Blink time set to %ld milliseconds."), blinkTime);
|
|
}
|
|
}
|
|
|
|
void MyFrame::OnSetFontSize(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
long fontSize = wxGetNumberFromUser
|
|
(
|
|
wxT("The font size also determines the caret size so\nthis demonstrates resizing the caret."),
|
|
wxT("Font size (in points):"),
|
|
wxT("wxCaret sample"),
|
|
12, 1, 100,
|
|
this
|
|
);
|
|
|
|
if ( fontSize != -1 )
|
|
{
|
|
m_canvas->SetFontSize((int)fontSize);
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// MyCanvas
|
|
// ----------------------------------------------------------------------------
|
|
|
|
IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
|
|
|
|
BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
|
|
EVT_PAINT(MyCanvas::OnPaint)
|
|
EVT_SIZE(MyCanvas::OnSize)
|
|
EVT_CHAR(MyCanvas::OnChar)
|
|
END_EVENT_TABLE()
|
|
|
|
MyCanvas::MyCanvas( wxWindow *parent )
|
|
: wxScrolledWindow( parent, wxID_ANY,
|
|
wxDefaultPosition, wxDefaultSize,
|
|
wxSUNKEN_BORDER )
|
|
{
|
|
m_text = (wxChar *)NULL;
|
|
|
|
SetBackgroundColour(*wxWHITE);
|
|
|
|
SetFontSize(12);
|
|
|
|
m_xCaret = m_yCaret =
|
|
m_xChars = m_yChars = 0;
|
|
|
|
m_xMargin = m_yMargin = 5;
|
|
|
|
CreateCaret();
|
|
}
|
|
|
|
MyCanvas::~MyCanvas()
|
|
{
|
|
free(m_text);
|
|
}
|
|
|
|
void MyCanvas::CreateCaret()
|
|
{
|
|
wxCaret *caret = new wxCaret(this, m_widthChar, m_heightChar);
|
|
SetCaret(caret);
|
|
|
|
caret->Move(m_xMargin, m_yMargin);
|
|
caret->Show();
|
|
}
|
|
|
|
void MyCanvas::SetFontSize(int fontSize)
|
|
{
|
|
m_font = wxFont(fontSize, wxFONTFAMILY_TELETYPE,
|
|
wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL);
|
|
|
|
wxClientDC dc(this);
|
|
dc.SetFont(m_font);
|
|
m_heightChar = dc.GetCharHeight();
|
|
m_widthChar = dc.GetCharWidth();
|
|
|
|
wxCaret *caret = GetCaret();
|
|
if ( caret )
|
|
{
|
|
caret->SetSize(m_widthChar, m_heightChar);
|
|
|
|
ChangeSize();
|
|
}
|
|
}
|
|
|
|
void MyCanvas::MoveCaret(int x, int y)
|
|
{
|
|
m_xCaret = x;
|
|
m_yCaret = y;
|
|
|
|
DoMoveCaret();
|
|
}
|
|
|
|
void MyCanvas::DoMoveCaret()
|
|
{
|
|
wxLogStatus(wxT("Caret is at (%d, %d)"), m_xCaret, m_yCaret);
|
|
|
|
GetCaret()->Move(m_xMargin + m_xCaret * m_widthChar,
|
|
m_yMargin + m_yCaret * m_heightChar);
|
|
}
|
|
|
|
void MyCanvas::OnSize(wxSizeEvent& event)
|
|
{
|
|
ChangeSize();
|
|
|
|
event.Skip();
|
|
}
|
|
|
|
void MyCanvas::ChangeSize()
|
|
{
|
|
wxSize size = GetClientSize();
|
|
m_xChars = (size.x - 2*m_xMargin) / m_widthChar;
|
|
m_yChars = (size.y - 2*m_yMargin) / m_heightChar;
|
|
if ( !m_xChars )
|
|
m_xChars = 1;
|
|
if ( !m_yChars )
|
|
m_yChars = 1;
|
|
|
|
free(m_text);
|
|
m_text = (wxChar *)calloc(m_xChars * m_yChars, sizeof(wxChar));
|
|
|
|
#if wxUSE_STATUSBAR
|
|
wxFrame *frame = wxDynamicCast(GetParent(), wxFrame);
|
|
|
|
if ( frame && frame->GetStatusBar() )
|
|
{
|
|
wxString msg;
|
|
msg.Printf(wxT("Panel size is (%d, %d)"), m_xChars, m_yChars);
|
|
frame->SetStatusText(msg, 1);
|
|
}
|
|
#endif // wxUSE_STATUSBAR
|
|
}
|
|
|
|
// NB: this method is horrible inefficient especially because the caret
|
|
// needs to be redrawn often and in this case we only have to redraw
|
|
// the caret location and not the entire window - in a real program we
|
|
// would use GetUpdateRegion() and iterate over rectangles it contains
|
|
void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
|
|
{
|
|
wxCaretSuspend cs(this);
|
|
wxPaintDC dc( this );
|
|
PrepareDC( dc );
|
|
dc.Clear();
|
|
|
|
dc.SetFont( m_font );
|
|
|
|
for ( int y = 0; y < m_yChars; y++ )
|
|
{
|
|
wxString line;
|
|
|
|
for ( int x = 0; x < m_xChars; x++ )
|
|
{
|
|
wxChar ch = CharAt(x, y);
|
|
if ( !ch )
|
|
ch = wxT(' ');
|
|
line += ch;
|
|
}
|
|
|
|
dc.DrawText( line, m_xMargin, m_yMargin + y * m_heightChar );
|
|
}
|
|
}
|
|
|
|
void MyCanvas::OnChar( wxKeyEvent &event )
|
|
{
|
|
switch ( event.GetKeyCode() )
|
|
{
|
|
case WXK_LEFT:
|
|
PrevChar();
|
|
break;
|
|
|
|
case WXK_RIGHT:
|
|
NextChar();
|
|
break;
|
|
|
|
case WXK_UP:
|
|
PrevLine();
|
|
break;
|
|
|
|
case WXK_DOWN:
|
|
NextLine();
|
|
break;
|
|
|
|
case WXK_HOME:
|
|
Home();
|
|
break;
|
|
|
|
case WXK_END:
|
|
End();
|
|
break;
|
|
|
|
case WXK_RETURN:
|
|
Home();
|
|
NextLine();
|
|
break;
|
|
|
|
default:
|
|
if ( !event.AltDown() && wxIsprint(event.GetKeyCode()) )
|
|
{
|
|
wxChar ch = (wxChar)event.GetKeyCode();
|
|
CharAt(m_xCaret, m_yCaret) = ch;
|
|
|
|
wxCaretSuspend cs(this);
|
|
wxClientDC dc(this);
|
|
dc.SetFont(m_font);
|
|
dc.SetBackgroundMode(wxSOLID); // overwrite old value
|
|
dc.DrawText(ch, m_xMargin + m_xCaret * m_widthChar,
|
|
m_yMargin + m_yCaret * m_heightChar );
|
|
|
|
NextChar();
|
|
}
|
|
else
|
|
{
|
|
event.Skip();
|
|
}
|
|
}
|
|
|
|
DoMoveCaret();
|
|
}
|
|
|