/////////////////////////////////////////////////////////////////////////////// // Name: ownerdrw.h // Purpose: interface for owner-drawn GUI elements // Author: Vadim Zeitlin // Modified by: // Created: 11.11.97 // RCS-ID: $Id$ // Copyright: (c) 1998 Vadim Zeitlin // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// #ifndef _OWNERDRW_H #define _OWNERDRW_H #include "wx/defs.h" #if wxUSE_OWNER_DRAWN #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma interface "ownerdrw.h" #endif #include "wx/bitmap.h" #include "wx/colour.h" #include "wx/font.h" // ---------------------------------------------------------------------------- // wxOwnerDrawn - a mix-in base class, derive from it to implement owner-drawn // behaviour // // wxOwnerDrawn supports drawing of an item with non standard font, color and // also supports 3 bitmaps: either a checked/unchecked bitmap for a checkable // element or one unchangeable bitmap otherwise. // ---------------------------------------------------------------------------- class WXDLLEXPORT wxOwnerDrawn { public: // ctor & dtor wxOwnerDrawn(const wxString& str = wxEmptyString, bool bCheckable = false, bool bMenuItem = false); // FIXME kludge for colors virtual ~wxOwnerDrawn(); // fix appearance void SetFont(const wxFont& font) { m_font = font; m_bOwnerDrawn = true; } wxFont& GetFont() const { return (wxFont &)m_font; } void SetTextColour(const wxColour& colText) { m_colText = colText; m_bOwnerDrawn = true; } wxColour& GetTextColour() const { return (wxColour&) m_colText; } void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; m_bOwnerDrawn = true; } wxColour& GetBackgroundColour() const { return (wxColour&) m_colBack ; } void SetBitmaps(const wxBitmap& bmpChecked, const wxBitmap& bmpUnchecked = wxNullBitmap) { m_bmpChecked = bmpChecked; m_bmpUnchecked = bmpUnchecked; m_bOwnerDrawn = true; } void SetBitmap(const wxBitmap& bmpChecked) { m_bmpChecked = bmpChecked; m_bOwnerDrawn = true; } void SetDisabledBitmap( const wxBitmap& bmpDisabled ) { m_bmpDisabled = bmpDisabled; m_bOwnerDrawn = true; } const wxBitmap& GetBitmap(bool bChecked = true) const { return (bChecked ? m_bmpChecked : m_bmpUnchecked); } const wxBitmap& GetDisabledBitmap() const { return m_bmpDisabled; } // the height of the menu checkmark (or bitmap) is determined by the font // for the current item, but the width should be always the same (for the // items to be aligned), so by default it's taken to be the same as for // the last item (and default width for the first one). // // NB: default is too small for bitmaps, but ok for checkmarks. void SetMarginWidth(int nWidth) { ms_nLastMarginWidth = m_nMarginWidth = (size_t) nWidth; if ( ((size_t) nWidth) != ms_nDefaultMarginWidth ) m_bOwnerDrawn = true; } int GetMarginWidth() const { return (int) m_nMarginWidth; } static int GetDefaultMarginWidth() { return (int) ms_nDefaultMarginWidth; } // accessors void SetName(const wxString& strName) { m_strName = strName; } const wxString& GetName() const { return m_strName; } void SetCheckable(bool checkable) { m_bCheckable = checkable; } bool IsCheckable() const { return m_bCheckable; } // this is for menu items only: accel string is drawn right aligned after the // menu item if not empty void SetAccelString(const wxString& strAccel) { m_strAccel = strAccel; } // this function might seem strange, but if it returns false it means that // no non-standard attribute are set, so there is no need for this control // to be owner-drawn. Moreover, you can force owner-drawn to false if you // want to change, say, the color for the item but only if it is owner-drawn // (see wxMenuItem::wxMenuItem for example) bool IsOwnerDrawn() const { return m_bOwnerDrawn; } // switch on/off owner-drawing the item void SetOwnerDrawn(bool ownerDrawn = true) { m_bOwnerDrawn = ownerDrawn; } void ResetOwnerDrawn() { m_bOwnerDrawn = false; } public: // constants used in OnDrawItem // (they have the same values as corresponding Win32 constants) enum wxODAction { wxODDrawAll = 0x0001, // redraw entire control wxODSelectChanged = 0x0002, // selection changed (see Status.Select) wxODFocusChanged = 0x0004 // keyboard focus changed (see Status.Focus) }; enum wxODStatus { wxODSelected = 0x0001, // control is currently selected wxODGrayed = 0x0002, // item is to be grayed wxODDisabled = 0x0004, // item is to be drawn as disabled wxODChecked = 0x0008, // item is to be checked wxODHasFocus = 0x0010, // item has the keyboard focus wxODDefault = 0x0020, // item is the default item wxODHidePrefix= 0x0100 // hide keyboard cues (w2k and xp only) }; // virtual functions to implement drawing (return true if processed) virtual bool OnMeasureItem(size_t *pwidth, size_t *pheight); virtual bool OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus stat); protected: // return true if this is a menu item bool IsMenuItem() const; // get the font to use, whether m_font is set or not wxFont GetFontToUse() const; wxString m_strName, // label for a manu item m_strAccel; // the accel string ("Ctrl-F17") if any private: static size_t ms_nDefaultMarginWidth; // menu check mark width static size_t ms_nLastMarginWidth; // handy for aligning all items bool m_bCheckable, // used only for menu or check listbox items m_bOwnerDrawn; // true if something is non standard wxFont m_font; // font to use for drawing wxColour m_colText, // color ----"---"---"---- m_colBack; // background color wxBitmap m_bmpChecked, // bitmap to put near the item m_bmpUnchecked, // (checked is used also for 'uncheckable' items) m_bmpDisabled; size_t m_nHeight, // font height m_nMinHeight, // minimum height, as determined by user's system settings m_nMarginWidth; // space occupied by bitmap to the left of the item }; #endif // wxUSE_OWNER_DRAWN #endif // _OWNERDRW_H