Return NULL from wxWindow::GetCapture() when the capture is being lost.

[wxWidgets.git] / src / gtk / bmpcbox.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/gtk/bmpcbox.cpp
// Purpose:     wxBitmapComboBox
// Author:      Jaakko Salli
// Created:     2008-05-19
// Copyright:   (c) 2008 Jaakko Salli
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_BITMAPCOMBOBOX

#include "wx/bmpcbox.h"

#ifndef WX_PRECOMP
    #include "wx/log.h"
#endif

#include <gtk/gtk.h>
#include "wx/gtk/private.h"

// ============================================================================
// implementation
// ============================================================================


IMPLEMENT_DYNAMIC_CLASS(wxBitmapComboBox, wxComboBox)


// ----------------------------------------------------------------------------
// wxBitmapComboBox creation
// ----------------------------------------------------------------------------

void wxBitmapComboBox::Init()
{
    m_bitmapCellIndex = 0;
    m_stringCellIndex = 1;
    m_bitmapSize = wxSize(-1, -1);
}

wxBitmapComboBox::wxBitmapComboBox(wxWindow *parent,
                                  wxWindowID id,
                                  const wxString& value,
                                  const wxPoint& pos,
                                  const wxSize& size,
                                  const wxArrayString& choices,
                                  long style,
                                  const wxValidator& validator,
                                  const wxString& name)
    : wxComboBox(),
      wxBitmapComboBoxBase()
{
    Init();

    Create(parent,id,value,pos,size,choices,style,validator,name);
}

bool wxBitmapComboBox::Create(wxWindow *parent,
                              wxWindowID id,
                              const wxString& value,
                              const wxPoint& pos,
                              const wxSize& size,
                              const wxArrayString& choices,
                              long style,
                              const wxValidator& validator,
                              const wxString& name)
{
    wxCArrayString chs(choices);
    return Create(parent, id, value, pos, size, chs.GetCount(),
                  chs.GetStrings(), style, validator, name);
}

bool wxBitmapComboBox::Create(wxWindow *parent,
                              wxWindowID id,
                              const wxString& value,
                              const wxPoint& pos,
                              const wxSize& size,
                              int n,
                              const wxString choices[],
                              long style,
                              const wxValidator& validator,
                              const wxString& name)
{
    if ( !wxComboBox::Create(parent, id, value, pos, size,
                             n, choices, style, validator, name) )
        return false;

    // Select 'value' in entry-less mode
    if ( !GetEntry() )
    {
        int i = FindString(value);
        if (i != wxNOT_FOUND)
            SetSelection(i);
    }

    return true;
}

void wxBitmapComboBox::GTKCreateComboBoxWidget()
{
    GtkListStore *store;

    store = gtk_list_store_new( 2, G_TYPE_OBJECT, G_TYPE_STRING );

    if ( HasFlag(wxCB_READONLY) )
    {
        m_widget = gtk_combo_box_new_with_model( GTK_TREE_MODEL(store) );
    }
    else
    {
#ifdef __WXGTK3__
        m_widget = gtk_combo_box_new_with_model_and_entry(GTK_TREE_MODEL(store));
        gtk_combo_box_set_entry_text_column(GTK_COMBO_BOX(m_widget), m_stringCellIndex);
#else
        m_widget = gtk_combo_box_entry_new_with_model( GTK_TREE_MODEL(store), m_stringCellIndex );
#endif
        m_entry = GTK_ENTRY(gtk_bin_get_child(GTK_BIN(m_widget)));
        gtk_editable_set_editable(GTK_EDITABLE(m_entry), true);
    }
    g_object_ref(m_widget);

    // This must be called as gtk_combo_box_entry_new_with_model adds
    // automatically adds one text column.
    gtk_cell_layout_clear( GTK_CELL_LAYOUT(m_widget) );

    GtkCellRenderer* imageRenderer = gtk_cell_renderer_pixbuf_new();
    gtk_cell_layout_pack_start( GTK_CELL_LAYOUT(m_widget),
                                imageRenderer, FALSE);
    gtk_cell_layout_add_attribute( GTK_CELL_LAYOUT(m_widget),
                                   imageRenderer, "pixbuf", 0);

    GtkCellRenderer* textRenderer = gtk_cell_renderer_text_new();
    gtk_cell_layout_pack_end( GTK_CELL_LAYOUT(m_widget),
                              textRenderer, TRUE );
    gtk_cell_layout_add_attribute( GTK_CELL_LAYOUT(m_widget),
                                   textRenderer, "text", 1);
}

wxBitmapComboBox::~wxBitmapComboBox()
{
}

GtkWidget* wxBitmapComboBox::GetConnectWidget()
{
    if ( GetEntry() )
        return wxComboBox::GetConnectWidget();

    return wxChoice::GetConnectWidget();
}

GdkWindow *wxBitmapComboBox::GTKGetWindow(wxArrayGdkWindows& windows) const
{
    if ( GetEntry() )
        return wxComboBox::GTKGetWindow(windows);

    return wxChoice::GTKGetWindow(windows);
}

wxSize wxBitmapComboBox::DoGetBestSize() const
{
    wxSize best = wxComboBox::DoGetBestSize();

    int delta = GetBitmapSize().y - GetCharHeight();
    if ( delta > 0 )
    {
        best.y += delta;
        CacheBestSize(best);
    }
    return best;
}

// ----------------------------------------------------------------------------
// Item manipulation
// ----------------------------------------------------------------------------

void wxBitmapComboBox::SetItemBitmap(unsigned int n, const wxBitmap& bitmap)
{
    if ( bitmap.IsOk() )
    {
        if ( m_bitmapSize.x < 0 )
        {
            m_bitmapSize.x = bitmap.GetWidth();
            m_bitmapSize.y = bitmap.GetHeight();
        }

        GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
        GtkTreeModel *model = gtk_combo_box_get_model( combobox );
        GtkTreeIter iter;

        if ( gtk_tree_model_iter_nth_child( model, &iter, NULL, n ) )
        {
            GValue value0 = { 0, };
            g_value_init( &value0, G_TYPE_OBJECT );
            g_value_set_object( &value0, bitmap.GetPixbuf() );
            gtk_list_store_set_value( GTK_LIST_STORE(model), &iter,
                                      m_bitmapCellIndex, &value0 );
            g_value_unset( &value0 );
        }
    }
}

wxBitmap wxBitmapComboBox::GetItemBitmap(unsigned int n) const
{
    wxBitmap bitmap;

    GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
    GtkTreeModel *model = gtk_combo_box_get_model( combobox );
    GtkTreeIter iter;

    if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
    {
        GValue value = { 0, };
        gtk_tree_model_get_value( model, &iter,
                                  m_bitmapCellIndex, &value );
        GdkPixbuf* pixbuf = (GdkPixbuf*) g_value_get_object( &value );
        if ( pixbuf )
        {
            g_object_ref( pixbuf );
            bitmap = wxBitmap(pixbuf);
        }
        g_value_unset( &value );
    }

    return bitmap;
}

int wxBitmapComboBox::Append(const wxString& item, const wxBitmap& bitmap)
{
    const int n = wxComboBox::Append(item);
    if ( n != wxNOT_FOUND )
        SetItemBitmap(n, bitmap);
    return n;
}

int wxBitmapComboBox::Append(const wxString& item, const wxBitmap& bitmap,
                             void *clientData)
{
    const int n = wxComboBox::Append(item, clientData);
    if ( n != wxNOT_FOUND )
        SetItemBitmap(n, bitmap);
    return n;
}

int wxBitmapComboBox::Append(const wxString& item, const wxBitmap& bitmap,
                             wxClientData *clientData)
{
    const int n = wxComboBox::Append(item, clientData);
    if ( n != wxNOT_FOUND )
        SetItemBitmap(n, bitmap);
    return n;
}

int wxBitmapComboBox::Insert(const wxString& item,
                             const wxBitmap& bitmap,
                             unsigned int pos)
{
    const int n = wxComboBox::Insert(item, pos);
    if ( n != wxNOT_FOUND )
        SetItemBitmap(n, bitmap);
    return n;
}

int wxBitmapComboBox::Insert(const wxString& item, const wxBitmap& bitmap,
                             unsigned int pos, wxClientData *clientData)
{
    const int n = wxComboBox::Insert(item, pos, clientData);
    if ( n != wxNOT_FOUND )
        SetItemBitmap(n, bitmap);
    return n;
}

int wxBitmapComboBox::Insert(const wxString& item, const wxBitmap& bitmap,
                             unsigned int pos, void *clientData)
{
    const int n = wxComboBox::Insert(item, pos, clientData);
    if ( n != wxNOT_FOUND )
        SetItemBitmap(n, bitmap);
    return n;
}

void wxBitmapComboBox::GTKInsertComboBoxTextItem( unsigned int n, const wxString& text )
{
    GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
    GtkTreeModel *model = gtk_combo_box_get_model( combobox );
    GtkListStore *store = GTK_LIST_STORE( model );
    GtkTreeIter iter;

    gtk_list_store_insert( store, &iter, n );

    GValue value = { 0, };
    g_value_init( &value, G_TYPE_STRING );
    g_value_set_string( &value, wxGTK_CONV( text ) );
    gtk_list_store_set_value( store, &iter, m_stringCellIndex, &value );
    g_value_unset( &value );
}

// ----------------------------------------------------------------------------
// wxTextEntry interface override
// ----------------------------------------------------------------------------

void wxBitmapComboBox::WriteText(const wxString& value)
{
    if ( GetEntry() )
        wxComboBox::WriteText(value);
    else
        SetStringSelection(value);
}

wxString wxBitmapComboBox::GetValue() const
{
    if ( GetEntry() )
        return wxComboBox::GetValue();

    return GetStringSelection();
}

void wxBitmapComboBox::Remove(long from, long to)
{
    if ( GetEntry() )
        wxComboBox::Remove(from, to);
}

void wxBitmapComboBox::SetInsertionPoint(long pos)
{
    if ( GetEntry() )
        wxComboBox::SetInsertionPoint(pos);
}

long wxBitmapComboBox::GetInsertionPoint() const
{
    if ( GetEntry() )
        return wxComboBox::GetInsertionPoint();

    return 0;
 }
long wxBitmapComboBox::GetLastPosition() const
{
    if ( GetEntry() )
        return wxComboBox::GetLastPosition();

    return 0;
 }

void wxBitmapComboBox::SetSelection(long from, long to)
{
    if ( GetEntry() )
        wxComboBox::SetSelection(from, to);
}

void wxBitmapComboBox::GetSelection(long *from, long *to) const
{
    if ( GetEntry() )
        wxComboBox::GetSelection(from, to);
}

bool wxBitmapComboBox::IsEditable() const
{
    if ( GetEntry() )
        return wxTextEntry::IsEditable();

    return false;
}

void wxBitmapComboBox::SetEditable(bool editable)
{
    if ( GetEntry() )
        wxComboBox::SetEditable(editable);
}

#endif // wxUSE_BITMAPCOMBOBOX