gtk.cpp

Wxpython Implemented on Windows CE, Source code

    // draw the rectange using the first brush for the left and top sides and
    // the second one for the bottom and right ones
    void DrawShadedRect(wxDC& dc, wxRect *rect,
                        const wxPen& pen1, const wxPen& pen2);

    // as DrawShadedRect() but the pixels in the bottom left and upper right
    // border are drawn with the pen1, not pen2
    void DrawAntiShadedRect(wxDC& dc, wxRect *rect,
                            const wxPen& pen1, const wxPen& pen2);

    // used for drawing opened rectangles - draws only one side of it at once
    // (and doesn't adjust the rect)
    void DrawAntiShadedRectSide(wxDC& dc,
                                const wxRect& rect,
                                const wxPen& pen1,
                                const wxPen& pen2,
                                wxDirection dir);

    // draw an opened rect for the arrow in given direction
    void DrawArrowBorder(wxDC& dc,
                         wxRect *rect,
                         wxDirection dir);

    // draw two sides of the rectangle
    void DrawThumbBorder(wxDC& dc,
                         wxRect *rect,
                         wxOrientation orient);

    // draw the normal 3D border
    void DrawRaisedBorder(wxDC& dc, wxRect *rect);

    // just as DrawRaisedBorder() except that the bottom left and up right
    // pixels of the interior rect are drawn in another colour (i.e. the inner
    // rect is drawn with DrawAntiShadedRect() and not DrawShadedRect())
    void DrawAntiRaisedBorder(wxDC& dc, wxRect *rect);

#if wxUSE_SCROLLBAR
    // returns the size of the arrow for the scrollbar (depends on
    // orientation)
    wxSize GetScrollbarArrowSize(const wxScrollBar *scrollbar) const
    {
        wxSize size;
        if ( scrollbar->IsVertical() )
        {
            size = m_sizeScrollbarArrow;
        }
        else
        {
            size.x = m_sizeScrollbarArrow.y;
            size.y = m_sizeScrollbarArrow.x;
        }

        return size;
    }
#endif // wxUSE_SCROLLBAR

    // get the line wrap indicator bitmap
    wxBitmap GetLineWrapBitmap() const;

    // DrawCheckBitmap and DrawRadioBitmap helpers

    // draw the check bitmaps once and cache them for later use
    wxBitmap GetCheckBitmap(int flags);

    // draw a /\ or \/ line from (x1, y1) to (x2, y1) passing by the point
    // ((x1 + x2)/2, y2)
    void DrawUpZag(wxDC& dc,
                   wxCoord x1, wxCoord x2,
                   wxCoord y1, wxCoord y2);
    void DrawDownZag(wxDC& dc,
                     wxCoord x1, wxCoord x2,
                     wxCoord y1, wxCoord y2);

    // draw the radio button bitmap for the given state
    void DrawRadioBitmap(wxDC& dc, const wxRect& rect, int flags);

    // draw check/radio - the bitmap must be a valid one by now
    void DoDrawCheckOrRadioBitmap(wxDC& dc,
                                  const wxString& label,
                                  const wxBitmap& bitmap,
                                  const wxRect& rectTotal,
                                  int flags,
                                  wxAlignment align,
                                  int indexAccel);

    // common part of DrawMenuItem() and DrawMenuBarItem()
    void DoDrawMenuItem(wxDC& dc,
                        const wxRect& rect,
                        const wxString& label,
                        int flags,
                        int indexAccel,
                        const wxString& accel = wxEmptyString,
                        const wxBitmap& bitmap = wxNullBitmap,
                        const wxGTKMenuGeometryInfo *geometryInfo = NULL);

    // initialize the combo bitmaps
    void InitComboBitmaps();

private:
    const wxColourScheme *m_scheme;

    // data
    wxSize m_sizeScrollbarArrow;

    // GDI objects
    wxPen m_penBlack,
          m_penDarkGrey,
          m_penGrey,
          m_penLightGrey,
          m_penHighlight;

    // the checkbox bitmaps: first row is for the normal, second for the
    // pressed state and the columns are for checked, unchecked and
    // undeterminated respectively
    wxBitmap m_bitmapsCheckbox[2][3];

    // the line wrap bitmap (drawn at the end of wrapped lines)
    wxBitmap m_bmpLineWrap;

    // the combobox bitmaps
    enum
    {
        ComboState_Normal,
        ComboState_Focus,
        ComboState_Pressed,
        ComboState_Disabled,
        ComboState_Max
    };

    wxBitmap m_bitmapsCombo[ComboState_Max];
};

// ----------------------------------------------------------------------------
// wxGTKInputHandler and derived classes: process the keyboard and mouse
// messages according to GTK standards
// ----------------------------------------------------------------------------

class wxGTKInputHandler : public wxInputHandler
{
public:
    wxGTKInputHandler(wxGTKRenderer *renderer);

    virtual bool HandleKey(wxInputConsumer *control,
                           const wxKeyEvent& event,
                           bool pressed);
    virtual bool HandleMouse(wxInputConsumer *control,
                             const wxMouseEvent& event);
    virtual bool HandleMouseMove(wxInputConsumer *control, const wxMouseEvent& event);

protected:
    wxGTKRenderer *m_renderer;
};

#if wxUSE_SCROLLBAR

class wxGTKScrollBarInputHandler : public wxStdScrollBarInputHandler
{
public:
    wxGTKScrollBarInputHandler(wxRenderer *renderer, wxInputHandler *handler)
        : wxStdScrollBarInputHandler(renderer, handler) { }

protected:
    virtual void Highlight(wxScrollBar *scrollbar, bool doIt)
    {
        // only arrows and the thumb can be highlighted
        if ( !IsArrow() && m_htLast != wxHT_SCROLLBAR_THUMB )
            return;

        wxStdScrollBarInputHandler::Highlight(scrollbar, doIt);
    }

    virtual void Press(wxScrollBar *scrollbar, bool doIt)
    {
        // only arrows can be pressed
        if ( !IsArrow() )
            return;

        wxStdScrollBarInputHandler::Press(scrollbar, doIt);
    }

    virtual bool IsAllowedButton(int WXUNUSED(button)) { return true; }

    bool IsArrow() const
    {
        return m_htLast == wxHT_SCROLLBAR_ARROW_LINE_1 ||
                m_htLast == wxHT_SCROLLBAR_ARROW_LINE_2;
    }
};

#endif // wxUSE_SCROLLBAR

#if wxUSE_CHECKBOX

class wxGTKCheckboxInputHandler : public wxStdCheckboxInputHandler
{
public:
    wxGTKCheckboxInputHandler(wxInputHandler *handler)
        : wxStdCheckboxInputHandler(handler) { }

    virtual bool HandleKey(wxInputConsumer *control,
                           const wxKeyEvent& event,
                           bool pressed);
};

#endif // wxUSE_CHECKBOX

#if wxUSE_TEXTCTRL

class wxGTKTextCtrlInputHandler : public wxStdTextCtrlInputHandler
{
public:
    wxGTKTextCtrlInputHandler(wxInputHandler *handler)
        : wxStdTextCtrlInputHandler(handler) { }

    virtual bool HandleKey(wxInputConsumer *control,
                           const wxKeyEvent& event,
                           bool pressed);
};

#endif // wxUSE_TEXTCTRL

// ----------------------------------------------------------------------------
// wxGTKColourScheme: uses the standard GTK colours
// ----------------------------------------------------------------------------

class wxGTKColourScheme : public wxColourScheme
{
public:
    virtual wxColour Get(StdColour col) const;
    virtual wxColour GetBackground(wxWindow *win) const;
};

// ----------------------------------------------------------------------------
// wxGTKArtProvider
// ----------------------------------------------------------------------------

class wxGTKArtProvider : public wxArtProvider
{
protected:
    virtual wxBitmap CreateBitmap(const wxArtID& id,
                                  const wxArtClient& client,
                                  const wxSize& size);
};

// ----------------------------------------------------------------------------
// wxGTKTheme
// ----------------------------------------------------------------------------

WX_DEFINE_ARRAY_PTR(wxInputHandler *, wxArrayHandlers);

class wxGTKTheme : public wxTheme
{
public:
    wxGTKTheme();
    virtual ~wxGTKTheme();

    virtual wxRenderer *GetRenderer();
    virtual wxArtProvider *GetArtProvider();
    virtual wxInputHandler *GetInputHandler(const wxString& control);
    virtual wxColourScheme *GetColourScheme();

private:
    // get the default input handler
    wxInputHandler *GetDefaultInputHandler();

    wxGTKRenderer *m_renderer;

    wxGTKArtProvider *m_artProvider;

    // the names of the already created handlers and the handlers themselves
    // (these arrays are synchronized)
    wxSortedArrayString m_handlerNames;
    wxArrayHandlers m_handlers;

    wxGTKInputHandler *m_handlerDefault;

    wxGTKColourScheme *m_scheme;

    WX_DECLARE_THEME(gtk)
};

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

WX_IMPLEMENT_THEME(wxGTKTheme, gtk, wxTRANSLATE("GTK+ theme"));

// ----------------------------------------------------------------------------
// wxGTKTheme
// ----------------------------------------------------------------------------

wxGTKTheme::wxGTKTheme()
{
    m_scheme = NULL;
    m_renderer = NULL;
    m_handlerDefault = NULL;
    m_artProvider = NULL;
}

wxGTKTheme::~wxGTKTheme()
{
    size_t count = m_handlers.GetCount();
    for ( size_t n = 0; n < count; n++ )
    {
        if ( m_handlers[n] != m_handlerDefault )
            delete m_handlers[n];
    }

    delete m_handlerDefault;
    delete m_renderer;
    delete m_scheme;
    wxArtProvider::RemoveProvider(m_artProvider);
}

wxRenderer *wxGTKTheme::GetRenderer()
{
    if ( !m_renderer )
    {
        m_renderer = new wxGTKRenderer(GetColourScheme());
    }

    return m_renderer;
}

wxArtProvider *wxGTKTheme::GetArtProvider()
{
    if ( !m_artProvider )
    {
        m_artProvider = new wxGTKArtProvider;
    }

    return m_artProvider;
}

wxColourScheme *wxGTKTheme::GetColourScheme()
{
    if ( !m_scheme )
    {
        m_scheme = new wxGTKColourScheme;
    }
    return m_scheme;
}

wxInputHandler *wxGTKTheme::GetDefaultInputHandler()
{
    if ( !m_handlerDefault )
    {
        m_handlerDefault = new wxGTKInputHandler(m_renderer);
    }

    return m_handlerDefault;
}

wxInputHandler *wxGTKTheme::GetInputHandler(const wxString& control)
{
    wxInputHandler *handler = NULL;
    int n = m_handlerNames.Index(control);
    if ( n == wxNOT_FOUND )
    {
        // create a new handler
        if ( control == wxINP_HANDLER_SCROLLBAR )
        {
#if wxUSE_SCROLLBAR
            handler = new wxGTKScrollBarInputHandler(m_renderer,
                                                     GetDefaultInputHandler());
#endif // wxUSE_SCROLLBAR
        }
#if wxUSE_BUTTON
        else if ( control == wxINP_HANDLER_BUTTON )
            handler = new wxStdButtonInputHandler(GetDefaultInputHandler());
#endif // wxUSE_CHECKBOX
#if wxUSE_CHECKBOX
        else if ( control == wxINP_HANDLER_CHECKBOX )
            handler = new wxGTKCheckboxInputHandler(GetDefaultInputHandler());
#endif // wxUSE_CHECKBOX
#if wxUSE_COMBOBOX
        else if ( control == wxINP_HANDLER_COMBOBOX )
            handler = new wxStdComboBoxInputHandler(GetDefaultInputHandler());
#endif // wxUSE_COMBOBOX
#if wxUSE_LISTBOX
        else if ( control == wxINP_HANDLER_LISTBOX )
            handler = new wxStdListboxInputHandler(GetDefaultInputHandler());
#endif // wxUSE_LISTBOX
#if wxUSE_CHECKLISTBOX