C++ wxBitmap::GetPixbuf方法代码示例

bool wxNotebook::SetPageImage( size_t page, int image )
{
    wxCHECK_MSG(page < GetPageCount(), false, "invalid notebook index");

    wxGtkNotebookPage* pageData = GetNotebookPage(page);
    if (image >= 0)
    {
        wxCHECK_MSG(HasImageList(), false, "invalid notebook imagelist");
        const wxBitmap bitmap = GetImageList()->GetBitmap(image);
        if (pageData->m_image)
        {
            gtk_image_set_from_pixbuf(
                GTK_IMAGE(pageData->m_image), bitmap.GetPixbuf());
        }
        else
        {
            pageData->m_image = gtk_image_new_from_pixbuf(bitmap.GetPixbuf());
            gtk_widget_show(pageData->m_image);
            gtk_box_pack_start(GTK_BOX(pageData->m_box),
                pageData->m_image, false, false, m_padding);
        }
    }
    else if (pageData->m_image)
    {
        gtk_widget_destroy(pageData->m_image);
        pageData->m_image = NULL;
    }
    pageData->m_imageIndex = image;

    return true;
}

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 );
        }
    }
}

void wxAnyButton::GTKDoShowBitmap(const wxBitmap& bitmap)
{
    wxASSERT_MSG( bitmap.IsOk(), "invalid bitmap" );

    GtkWidget *image;
    if ( DontShowLabel() )
    {
        image = gtk_bin_get_child(GTK_BIN(m_widget));
    }
    else // have both label and bitmap
    {
#ifdef __WXGTK26__
        if ( !gtk_check_version(2,6,0) )
        {
            image = gtk_button_get_image(GTK_BUTTON(m_widget));
        }
        else
#endif // __WXGTK26__
        {
            // buttons with both label and bitmap are only supported with GTK+
            // 2.6 so far
            //
            // it shouldn't be difficult to implement them ourselves for the
            // previous GTK+ versions by stuffing a container with a label and
            // an image inside GtkButton but there doesn't seem to be much
            // point in doing this for ancient GTK+ versions
            return;
        }
    }

    wxCHECK_RET( image && GTK_IS_IMAGE(image), "must have image widget" );

    gtk_image_set_from_pixbuf(GTK_IMAGE(image), bitmap.GetPixbuf());
}

void wxAnyButton::GTKDoShowBitmap(const wxBitmap& bitmap)
{
    wxASSERT_MSG( bitmap.IsOk(), "invalid bitmap" );

    GtkWidget *image;
    if ( DontShowLabel() )
    {
        image = gtk_bin_get_child(GTK_BIN(m_widget));
    }
    else // have both label and bitmap
    {
        image = gtk_button_get_image(GTK_BUTTON(m_widget));
    }

    wxCHECK_RET( image && GTK_IS_IMAGE(image), "must have image widget" );

    gtk_image_set_from_pixbuf(GTK_IMAGE(image), bitmap.GetPixbuf());
}

bool wxNotebook::InsertPage( size_t position,
                             wxNotebookPage* win,
                             const wxString& text,
                             bool select,
                             int imageId )
{
    wxCHECK_MSG( m_widget != NULL, false, wxT("invalid notebook") );

    wxCHECK_MSG( win->GetParent() == this, false,
               wxT("Can't add a page whose parent is not the notebook!") );

    wxCHECK_MSG( position <= GetPageCount(), false,
                 wxT("invalid page index in wxNotebookPage::InsertPage()") );

    // Hack Alert! (Part II): See above in wxNotebook::AddChildGTK
    // why this has to be done.
    gtk_widget_unparent(win->m_widget);

    if (m_themeEnabled)
        win->SetThemeEnabled(true);

    GtkNotebook *notebook = GTK_NOTEBOOK(m_widget);

    wxGtkNotebookPage* pageData = new wxGtkNotebookPage;

    m_pages.insert(m_pages.begin() + position, win);
    m_pagesData.Insert(position, pageData);

    // set the label image and text
    // this must be done before adding the page, as GetPageText
    // and GetPageImage will otherwise return wrong values in
    // the page-changed event that results from inserting the
    // first page.
    pageData->m_imageIndex = imageId;

    pageData->m_box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 1);
#ifndef __WXGTK3__
    gtk_container_set_border_width(GTK_CONTAINER(pageData->m_box), 2);
#endif

    pageData->m_image = NULL;
    if (imageId != -1)
    {
        if (HasImageList())
        {
            const wxBitmap bitmap = GetImageList()->GetBitmap(imageId);
            pageData->m_image = gtk_image_new_from_pixbuf(bitmap.GetPixbuf());
            gtk_box_pack_start(GTK_BOX(pageData->m_box),
                pageData->m_image, false, false, m_padding);
        }
        else
        {
            wxFAIL_MSG("invalid notebook imagelist");
        }
    }

    /* set the label text */
    pageData->m_label = gtk_label_new(wxGTK_CONV(wxStripMenuCodes(text)));
    gtk_box_pack_end(GTK_BOX(pageData->m_box),
        pageData->m_label, false, false, m_padding);

    gtk_widget_show_all(pageData->m_box);
    gtk_notebook_insert_page(notebook, win->m_widget, pageData->m_box, position);

    /* apply current style */
#ifdef __WXGTK3__
    GTKApplyStyle(pageData->m_label, NULL);
#else
    GtkRcStyle *style = GTKCreateWidgetStyle();
    if ( style )
    {
        gtk_widget_modify_style(pageData->m_label, style);
        g_object_unref(style);
    }
#endif

    if (select && GetPageCount() > 1)
    {
        SetSelection( position );
    }

    InvalidateBestSize();
    return true;
}