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wxWidgets/src/gtk1/spinctrl.cpp
Vadim Zeitlin 865bb3251e GTK+ callbacks must have C linkage (patch 1157384) 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32974 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2005-03-21 23:42:26 +00:00

322 lines
8.8 KiB
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/////////////////////////////////////////////////////////////////////////////
// Name: spinbutt.cpp
// Purpose: wxSpinCtrl
// Author: Robert
// Modified by:
// RCS-ID: $Id$
// Copyright: (c) Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "spinctrl.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/spinctrl.h"
#if wxUSE_SPINCTRL
#include "wx/utils.h"
#include "wx/textctrl.h" // for wxEVT_COMMAND_TEXT_UPDATED
#include "wx/math.h"
#include "wx/gtk/private.h"
//-----------------------------------------------------------------------------
// idle system
//-----------------------------------------------------------------------------
extern void wxapp_install_idle_handler();
extern bool g_isIdle;
static const float sensitivity = 0.02;
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
extern bool g_blockEventsOnDrag;
//-----------------------------------------------------------------------------
// "value_changed"
//-----------------------------------------------------------------------------
extern "C" {
static void gtk_spinctrl_callback( GtkWidget *WXUNUSED(widget), wxSpinCtrl *win )
{
if (g_isIdle) wxapp_install_idle_handler();
if (!win->m_hasVMT) return;
if (g_blockEventsOnDrag) return;
wxCommandEvent event( wxEVT_COMMAND_SPINCTRL_UPDATED, win->GetId());
event.SetEventObject( win );
// note that we don't use wxSpinCtrl::GetValue() here because it would
// adjust the value to fit into the control range and this means that we
// would never be able to enter an "invalid" value in the control, even
// temporarily - and trying to enter 10 into the control which accepts the
// values in range 5..50 is then, ummm, quite challenging (hint: you can't
// enter 1!) (VZ)
event.SetInt( (int)ceil(win->m_adjust->value) );
win->GetEventHandler()->ProcessEvent( event );
}
}
//-----------------------------------------------------------------------------
// "changed"
//-----------------------------------------------------------------------------
extern "C" {
static void
gtk_spinctrl_text_changed_callback( GtkWidget *WXUNUSED(widget), wxSpinCtrl *win )
{
if (!win->m_hasVMT) return;
if (g_isIdle)
wxapp_install_idle_handler();
wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
event.SetEventObject( win );
// see above
event.SetInt( (int)ceil(win->m_adjust->value) );
win->GetEventHandler()->ProcessEvent( event );
}
}
//-----------------------------------------------------------------------------
// wxSpinCtrl
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl,wxControl)
BEGIN_EVENT_TABLE(wxSpinCtrl, wxControl)
EVT_CHAR(wxSpinCtrl::OnChar)
END_EVENT_TABLE()
bool wxSpinCtrl::Create(wxWindow *parent, wxWindowID id,
const wxString& value,
const wxPoint& pos, const wxSize& size,
long style,
int min, int max, int initial,
const wxString& name)
{
m_needParent = TRUE;
m_acceptsFocus = TRUE;
if (!PreCreation( parent, pos, size ) ||
!CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
{
wxFAIL_MSG( wxT("wxSpinCtrl creation failed") );
return FALSE;
}
m_oldPos = initial;
m_adjust = (GtkAdjustment*) gtk_adjustment_new( initial, min, max, 1.0, 5.0, 0.0);
m_widget = gtk_spin_button_new( m_adjust, 1, 0 );
gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
(int)(m_windowStyle & wxSP_WRAP) );
GtkEnableEvents();
m_parent->DoAddChild( this );
PostCreation(size);
SetValue( value );
return TRUE;
}
void wxSpinCtrl::GtkDisableEvents()
{
gtk_signal_disconnect_by_func( GTK_OBJECT(m_adjust),
GTK_SIGNAL_FUNC(gtk_spinctrl_callback),
(gpointer) this );
gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
GTK_SIGNAL_FUNC(gtk_spinctrl_text_changed_callback),
(gpointer) this );
}
void wxSpinCtrl::GtkEnableEvents()
{
gtk_signal_connect( GTK_OBJECT (m_adjust),
"value_changed",
GTK_SIGNAL_FUNC(gtk_spinctrl_callback),
(gpointer) this );
gtk_signal_connect( GTK_OBJECT(m_widget),
"changed",
GTK_SIGNAL_FUNC(gtk_spinctrl_text_changed_callback),
(gpointer)this);
}
int wxSpinCtrl::GetMin() const
{
wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
return (int)ceil(m_adjust->lower);
}
int wxSpinCtrl::GetMax() const
{
wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
return (int)ceil(m_adjust->upper);
}
int wxSpinCtrl::GetValue() const
{
wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
gtk_spin_button_update( GTK_SPIN_BUTTON(m_widget) );
return (int)ceil(m_adjust->value);
}
void wxSpinCtrl::SetValue( const wxString& value )
{
wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
int n;
if ( (wxSscanf(value, wxT("%d"), &n) == 1) )
{
// a number - set it
SetValue(n);
}
else
{
// invalid number - set text as is (wxMSW compatible)
GtkDisableEvents();
gtk_entry_set_text( GTK_ENTRY(m_widget), wxGTK_CONV( value ) );
GtkEnableEvents();
}
}
void wxSpinCtrl::SetValue( int value )
{
wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
float fpos = (float)value;
m_oldPos = fpos;
if (fabs(fpos-m_adjust->value) < sensitivity) return;
m_adjust->value = fpos;
GtkDisableEvents();
gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
GtkEnableEvents();
}
void wxSpinCtrl::SetSelection(long from, long to)
{
// translate from wxWidgets conventions to GTK+ ones: (-1, -1) means the
// entire range
if ( from == -1 && to == -1 )
{
from = 0;
to = INT_MAX;
}
gtk_editable_select_region( GTK_EDITABLE(m_widget), (gint)from, (gint)to );
}
void wxSpinCtrl::SetRange(int minVal, int maxVal)
{
wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
float fmin = (float)minVal;
float fmax = (float)maxVal;
if ((fabs(fmin-m_adjust->lower) < sensitivity) &&
(fabs(fmax-m_adjust->upper) < sensitivity))
{
return;
}
m_adjust->lower = fmin;
m_adjust->upper = fmax;
gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
// these two calls are required due to some bug in GTK
Refresh();
SetFocus();
}
void wxSpinCtrl::OnChar( wxKeyEvent &event )
{
wxCHECK_RET( m_widget != NULL, wxT("invalid spin ctrl") );
if (event.GetKeyCode() == WXK_RETURN)
{
wxWindow *top_frame = m_parent;
while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
top_frame = top_frame->GetParent();
if ( GTK_IS_WINDOW(top_frame->m_widget) )
{
GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
if ( window )
{
GtkWidget *widgetDef = window->default_widget;
if ( widgetDef )
{
gtk_widget_activate(widgetDef);
return;
}
}
}
}
if ((event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
{
wxCommandEvent evt( wxEVT_COMMAND_TEXT_ENTER, m_windowId );
evt.SetEventObject(this);
GtkSpinButton *gsb = GTK_SPIN_BUTTON(m_widget);
wxString val = wxGTK_CONV_BACK( gtk_entry_get_text( &gsb->entry ) );
evt.SetString( val );
if (GetEventHandler()->ProcessEvent(evt)) return;
}
event.Skip();
}
bool wxSpinCtrl::IsOwnGtkWindow( GdkWindow *window )
{
if (GTK_SPIN_BUTTON(m_widget)->entry.text_area == window) return TRUE;
if (GTK_SPIN_BUTTON(m_widget)->panel == window) return TRUE;
return FALSE;
}
wxSize wxSpinCtrl::DoGetBestSize() const
{
wxSize ret( wxControl::DoGetBestSize() );
wxSize best(95, ret.y);
CacheBestSize(best);
return best;
}
// static
wxVisualAttributes
wxSpinCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
{
// TODO: overload to accept functions like gtk_spin_button_new?
// Until then use a similar type
return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
}
#endif
// wxUSE_SPINCTRL
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