home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Shareware BBS: 10 Tools
/
10-Tools.zip
/
wxos2240.zip
/
wxWindows-2.4.0
/
src
/
generic
/
caret.cpp
< prev
next >
Wrap
C/C++ Source or Header
|
2002-01-27
|
7KB
|
250 lines
///////////////////////////////////////////////////////////////////////////////
// Name: generic/caret.cpp
// Purpose: generic wxCaret class implementation
// Author: Vadim Zeitlin (original code by Robert Roebling)
// Modified by:
// Created: 25.05.99
// RCS-ID: $Id: caret.cpp,v 1.9 2002/01/27 23:37:58 VS Exp $
// Copyright: (c) wxWindows team
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#ifdef __GNUG__
#pragma implementation "caret.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_CARET
#ifndef WX_PRECOMP
#include "wx/window.h"
#include "wx/dcclient.h"
#include "wx/dcmemory.h"
#endif //WX_PRECOMP
#include "wx/caret.h"
// ----------------------------------------------------------------------------
// global variables for this module
// ----------------------------------------------------------------------------
// the blink time (common to all carets for MSW compatibility)
static int gs_blinkTime = 500; // in milliseconds
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// timer stuff
// ----------------------------------------------------------------------------
wxCaretTimer::wxCaretTimer(wxCaret *caret)
{
m_caret = caret;
}
void wxCaretTimer::Notify()
{
m_caret->OnTimer();
}
void wxCaret::OnTimer()
{
// don't blink the caret when we don't have the focus
if ( m_hasFocus )
Blink();
}
// ----------------------------------------------------------------------------
// wxCaret static functions and data
// ----------------------------------------------------------------------------
int wxCaretBase::GetBlinkTime()
{
return gs_blinkTime;
}
void wxCaretBase::SetBlinkTime(int milliseconds)
{
gs_blinkTime = milliseconds;
}
// ----------------------------------------------------------------------------
// initialization and destruction
// ----------------------------------------------------------------------------
void wxCaret::InitGeneric()
{
m_hasFocus = TRUE;
m_blinkedOut = TRUE;
m_xOld =
m_yOld = -1;
m_bmpUnderCaret.Create(m_width, m_height);
}
wxCaret::~wxCaret()
{
if ( IsVisible() )
{
// stop blinking
if ( m_timer.IsRunning() )
m_timer.Stop();
}
}
// ----------------------------------------------------------------------------
// showing/hiding/moving the caret (base class interface)
// ----------------------------------------------------------------------------
void wxCaret::DoShow()
{
int blinkTime = GetBlinkTime();
if ( blinkTime )
m_timer.Start(blinkTime);
if ( m_blinkedOut )
Blink();
}
void wxCaret::DoHide()
{
m_timer.Stop();
if ( !m_blinkedOut )
{
Blink();
}
}
void wxCaret::DoMove()
{
if ( IsVisible() )
{
if ( !m_blinkedOut )
{
// hide it right now and it will be shown the next time it blinks
Blink();
// but if the caret is not blinking, we should blink it back into
// visibility manually
if ( !m_timer.IsRunning() )
Blink();
}
}
//else: will be shown at the correct location when it is shown
}
// ----------------------------------------------------------------------------
// handling the focus
// ----------------------------------------------------------------------------
void wxCaret::OnSetFocus()
{
m_hasFocus = TRUE;
if ( IsVisible() )
Refresh();
}
void wxCaret::OnKillFocus()
{
m_hasFocus = FALSE;
if ( IsVisible() )
{
// the caret must be shown - otherwise, if it is hidden now, it will
// stay so until the focus doesn't return because it won't blink any
// more
// hide it first if it isn't hidden ...
if ( !m_blinkedOut )
Blink();
// .. and show it in the new style
Blink();
}
}
// ----------------------------------------------------------------------------
// drawing the caret
// ----------------------------------------------------------------------------
void wxCaret::Blink()
{
m_blinkedOut = !m_blinkedOut;
Refresh();
}
void wxCaret::Refresh()
{
wxClientDC dcWin(GetWindow());
wxMemoryDC dcMem;
dcMem.SelectObject(m_bmpUnderCaret);
if ( m_blinkedOut )
{
// restore the old image
dcWin.Blit(m_xOld, m_yOld, m_width, m_height,
&dcMem, 0, 0);
m_xOld =
m_yOld = -1;
}
else
{
if ( m_xOld == -1 && m_yOld == -1 )
{
// save the part we're going to overdraw
int x = m_x,
y = m_y;
#if defined(__WXGTK__) && !defined(__WX_DC_BLIT_FIXED__)
wxPoint pt = dcWin.GetDeviceOrigin();
x += pt.x;
y += pt.y;
#endif // broken wxGTK wxDC::Blit
dcMem.Blit(0, 0, m_width, m_height,
&dcWin, x, y);
m_xOld = m_x;
m_yOld = m_y;
}
//else: we already saved the image below the caret, don't do it any
// more
// and draw the caret there
DoDraw(&dcWin);
}
}
void wxCaret::DoDraw(wxDC *dc)
{
dc->SetPen( *wxBLACK_PEN );
dc->SetBrush(*(m_hasFocus ? wxBLACK_BRUSH : wxTRANSPARENT_BRUSH));
dc->SetPen(*wxBLACK_PEN);
// VZ: unfortunately, the rectangle comes out a pixel smaller when this is
// done under wxGTK - no idea why
//dc->SetLogicalFunction(wxINVERT);
dc->DrawRectangle(m_x, m_y, m_width, m_height);
}
#endif // wxUSE_CARET