wxWidgets/include/wx/msw/uxtheme.h

///////////////////////////////////////////////////////////////////////////////
// Name:        wx/msw/uxtheme.h
// Purpose:     wxUxThemeEngine class: support for XP themes
// Author:      John Platts, Vadim Zeitlin
// Modified by:
// Created:     2003
// Copyright:   (c) 2003 John Platts, Vadim Zeitlin
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#ifndef _WX_UXTHEME_H_
#define _WX_UXTHEME_H_

#include "wx/defs.h"

#if wxUSE_UXTHEME

#include "wx/msw/private.h"     // we use GetHwndOf()
#include <uxtheme.h>

#if defined(DTPB_WINDOWDC)
// DTPB_WINDOWDC has been added for Vista so it's save to assume that an SDK
// including it has vssym32.h available
#define HAVE_VSSYM32
#endif

#if defined(HAVE_VSSYM32)
#include <vssym32.h>
#else
#include <tmschema.h>
#endif

// ----------------------------------------------------------------------------
// Definitions for legacy Windows SDKs
// ----------------------------------------------------------------------------
// Some defintions introduced with Windows Vista might be missing in older SDKs
// Missing defintions are added here for compatiblity

#ifndef VSCLASS_LISTVIEW
#define LISS_NORMAL 1
#define LISS_HOT 2
#define LISS_SELECTED 3
#define LISS_DISABLED 4
#define LISS_SELECTEDNOTFOCUS 5
#define LISS_HOTSELECTED 6
#endif

#ifndef DTT_TEXTCOLOR
#define DTT_TEXTCOLOR       (1UL << 0)      // crText has been specified
#define DTT_STATEID         (1UL << 8)      // IStateId has been specified
#endif

#ifndef DSS_HIDEPREFIX
#define DSS_HIDEPREFIX  0x0200
#define DSS_PREFIXONLY  0x0400
#endif

#ifndef TMT_FONT
#define TMT_FONT	210
#endif

#ifndef HAVE_VSSYM32
enum EXPANDOBUTTONSTATES {
    TDLGEBS_NORMAL = 1,
    TDLGEBS_HOVER = 2,
    TDLGEBS_PRESSED = 3,
    TDLGEBS_EXPANDEDNORMAL = 4,
    TDLGEBS_EXPANDEDHOVER = 5,
    TDLGEBS_EXPANDEDPRESSED = 6,
    TDLGEBS_NORMALDISABLED = 7,
    TDLGEBS_EXPANDEDDISABLED = 8,
};

enum TASKDIALOGPARTS {
    TDLG_PRIMARYPANEL = 1,
    TDLG_MAININSTRUCTIONPANE = 2,
    TDLG_MAINICON = 3,
    TDLG_CONTENTPANE = 4,
    TDLG_CONTENTICON = 5,
    TDLG_EXPANDEDCONTENT = 6,
    TDLG_COMMANDLINKPANE = 7,
    TDLG_SECONDARYPANEL = 8,
    TDLG_CONTROLPANE = 9,
    TDLG_BUTTONSECTION = 10,
    TDLG_BUTTONWRAPPER = 11,
    TDLG_EXPANDOTEXT = 12,
    TDLG_EXPANDOBUTTON = 13,
    TDLG_VERIFICATIONTEXT = 14,
    TDLG_FOOTNOTEPANE = 15,
    TDLG_FOOTNOTEAREA = 16,
    TDLG_FOOTNOTESEPARATOR = 17,
    TDLG_EXPANDEDFOOTERAREA = 18,
    TDLG_PROGRESSBAR = 19,
    TDLG_IMAGEALIGNMENT = 20,
    TDLG_RADIOBUTTONPANE = 21,
};

#define CP_BACKGROUND 2
#define CP_TRANSPARENTBACKGROUND 3
#define CP_BORDER 4
#define CP_READONLY 5
#define CP_DROPDOWNBUTTONRIGHT 6
#define CP_DROPDOWNBUTTONLEFT 7
#define CP_CUEBANNER 8

#define RP_BACKGROUND 6
#define RP_SPLITTER 7
#define RP_SPLITTERVERT 8

enum BORDERSTATES {
    CBB_NORMAL = 1,
    CBB_HOT = 2,
    CBB_FOCUSED = 3,
    CBB_DISABLED = 4,
};

// The MENUPARTS enum is defined in MSVS 2005 SDK, even though it doesn't have
// vssym32.h, but it doesn't define the constants we use, so still define them,
// but make the enum unnamed for compatibility.
enum /* MENUPARTS -- FIXME-VC8: uncomment this when support for it is dropped */
{
    MENU_MENUITEM_TMSCHEMA = 1,
    MENU_SEPARATOR_TMSCHEMA = 6,
    MENU_POPUPBACKGROUND = 9,
    MENU_POPUPBORDERS = 10,
    MENU_POPUPCHECK = 11,
    MENU_POPUPCHECKBACKGROUND = 12,
    MENU_POPUPGUTTER = 13,
    MENU_POPUPITEM = 14,
    MENU_POPUPSEPARATOR = 15,
    MENU_POPUPSUBMENU = 16,
};

enum POPUPITEMSTATES
{
    MPI_NORMAL = 1,
    MPI_HOT = 2,
    MPI_DISABLED = 3,
    MPI_DISABLEDHOT = 4,
};

enum POPUPCHECKBACKGROUNDSTATES
{
    MCB_DISABLED = 1,
    MCB_NORMAL = 2,
    MCB_BITMAP = 3,
};

enum POPUPCHECKSTATES
{
    MC_CHECKMARKNORMAL = 1,
    MC_CHECKMARKDISABLED = 2,
    MC_BULLETNORMAL = 3,
    MC_BULLETDISABLED = 4,
};

#endif

// ----------------------------------------------------------------------------
// End definitions for legacy Windows SDKs
// ----------------------------------------------------------------------------

// Amazingly, GetThemeFont() and GetThemeSysFont() functions use LOGFONTA under
// XP but LOGFONTW (even in non-Unicode build) under later versions of Windows.
// If we declare them as taking LOGFONT below, the code would be able to
// silently pass LOGFONTA to them in ANSI build and would crash at run-time
// under Windows Vista/7 because of a buffer overrun (LOGFONTA being smaller
// than LOGFONTW expected by these functions). If we we declare them as taking
// LOGFONTW, the code wouldn't work correctly under XP. So we use a special
// wxUxThemeFont class to encapsulate this and intentionally change the LOGFONT
// output parameters of the theme functions to take it instead.

class wxUxThemeFont
{
public:
    // Trivial default ctor.
    wxUxThemeFont() { }

#if wxUSE_UNICODE
    // In Unicode build we always use LOGFONT anyhow so this class is
    // completely trivial.
    LPLOGFONTW GetPtr() { return &m_lfW; }
    const LOGFONTW& GetLOGFONT() { return m_lfW; }
#else // !wxUSE_UNICODE
    // Return either LOGFONTA or LOGFONTW pointer as required by the current
    // Windows version.
    LPLOGFONTW GetPtr()
    {
        return UseLOGFONTW() ? &m_lfW
                             : reinterpret_cast<LPLOGFONTW>(&m_lfA);
    }

    // This method returns LOGFONT (i.e. LOGFONTA in ANSI build and LOGFONTW in
    // Unicode one) which can be used with other, normal, Windows or wx
    // functions. Internally it may need to transform LOGFONTW to LOGFONTA.
    const LOGFONTA& GetLOGFONT()
    {
        if ( UseLOGFONTW() )
        {
            // Most of the fields are the same in LOGFONTA and LOGFONTW so just
            // copy everything by default.
            memcpy(&m_lfA, &m_lfW, sizeof(m_lfA));

            // But the face name must be converted from Unicode.
            WideCharToMultiByte(CP_ACP, 0, m_lfW.lfFaceName, -1,
                                m_lfA.lfFaceName, sizeof(m_lfA.lfFaceName),
                                NULL, NULL);
        }

        return m_lfA;
    }

private:
    static bool UseLOGFONTW()
    {
        return wxGetWinVersion() >= wxWinVersion_Vista;
    }

    LOGFONTA m_lfA;
#endif // wxUSE_UNICODE/!wxUSE_UNICODE

private:
    LOGFONTW m_lfW;

    wxDECLARE_NO_COPY_CLASS(wxUxThemeFont);
};

WXDLLIMPEXP_CORE bool wxUxThemeIsActive();

// ----------------------------------------------------------------------------
// wxUxThemeHandle: encapsulates ::Open/CloseThemeData()
// ----------------------------------------------------------------------------

class wxUxThemeHandle
{
public:
    wxUxThemeHandle(const wxWindow *win, const wchar_t *classes)
    {
        m_hTheme = (HTHEME)::OpenThemeData(GetHwndOf(win), classes);
    }

    operator HTHEME() const { return m_hTheme; }

    ~wxUxThemeHandle()
    {
        if ( m_hTheme )
        {
            ::CloseThemeData(m_hTheme);
        }
    }

private:
    HTHEME m_hTheme;

    wxDECLARE_NO_COPY_CLASS(wxUxThemeHandle);
};

#else // !wxUSE_UXTHEME

inline bool wxUxThemeIsActive() { return false; }

#endif // wxUSE_UXTHEME/!wxUSE_UXTHEME

#endif // _WX_UXTHEME_H_