4c85ab7569
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33010 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
304 lines
11 KiB
C++
304 lines
11 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/renderer.h
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// Purpose: wxRendererNative class declaration
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 20.07.2003
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// RCS-ID: $Id$
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// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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/*
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Renderers are used in wxWidgets for two similar but different things:
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(a) wxUniversal uses them to draw everything, i.e. all the control
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(b) all the native ports use them to draw generic controls only
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wxUniversal needs more functionality than what is included in the base class
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as it needs to draw stuff like scrollbars which are never going to be
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generic. So we put the bare minimum needed by the native ports here and the
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full wxRenderer class is declared in wx/univ/renderer.h and is only used by
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wxUniveral (although note that native ports can load wxRenderer objects from
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theme DLLs and use them as wxRendererNative ones, of course).
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*/
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#ifndef _WX_RENDERER_H_
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#define _WX_RENDERER_H_
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class WXDLLEXPORT wxDC;
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class WXDLLEXPORT wxWindow;
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#include "wx/gdicmn.h" // for wxPoint
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// some platforms have their own renderers, others use the generic one
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#if defined(__WXMSW__) || defined(__WXMAC__) || defined(__WXGTK__)
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#define wxHAS_NATIVE_RENDERER
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#else
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#undef wxHAS_NATIVE_RENDERER
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#endif
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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// control state flags used in wxRenderer and wxColourScheme
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enum
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{
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wxCONTROL_DISABLED = 0x00000001, // control is disabled
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wxCONTROL_FOCUSED = 0x00000002, // currently has keyboard focus
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wxCONTROL_PRESSED = 0x00000004, // (button) is pressed
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wxCONTROL_ISDEFAULT = 0x00000008, // only applies to the buttons
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wxCONTROL_ISSUBMENU = wxCONTROL_ISDEFAULT, // only for menu items
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wxCONTROL_EXPANDED = wxCONTROL_ISDEFAULT, // only for the tree items
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wxCONTROL_CURRENT = 0x00000010, // mouse is currently over the control
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wxCONTROL_SELECTED = 0x00000020, // selected item in e.g. listbox
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wxCONTROL_CHECKED = 0x00000040, // (check/radio button) is checked
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wxCONTROL_CHECKABLE = 0x00000080, // (menu) item can be checked
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wxCONTROL_UNDETERMINED = wxCONTROL_CHECKABLE, // (check) undetermined state
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wxCONTROL_FLAGS_MASK = 0x000000ff,
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// this is a pseudo flag not used directly by wxRenderer but rather by some
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// controls internally
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wxCONTROL_DIRTY = 0x80000000
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};
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// ----------------------------------------------------------------------------
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// helper structs
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// ----------------------------------------------------------------------------
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// wxSplitterWindow parameters
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struct WXDLLEXPORT wxSplitterRenderParams
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{
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// the only way to initialize this struct is by using this ctor
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wxSplitterRenderParams(wxCoord widthSash_, wxCoord border_, bool isSens_)
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: widthSash(widthSash_), border(border_), isHotSensitive(isSens_)
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{
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}
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// the width of the splitter sash
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const wxCoord widthSash;
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// the width of the border of the splitter window
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const wxCoord border;
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// true if the splitter changes its appearance when the mouse is over it
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const bool isHotSensitive;
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};
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// wxRendererNative interface version
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struct WXDLLEXPORT wxRendererVersion
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{
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wxRendererVersion(int version_, int age_) : version(version_), age(age_) { }
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// default copy ctor, assignment operator and dtor are ok
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// the current version and age of wxRendererNative interface: different
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// versions are incompatible (in both ways) while the ages inside the same
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// version are upwards compatible, i.e. the version of the renderer must
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// match the version of the main program exactly while the age may be
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// highergreater or equal to it
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//
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// NB: don't forget to increment age after adding any new virtual function!
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enum
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{
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Current_Version = 1,
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Current_Age = 5
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};
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// check if the given version is compatible with the current one
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static bool IsCompatible(const wxRendererVersion& ver)
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{
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return ver.version == Current_Version && ver.age >= Current_Age;
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}
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const int version;
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const int age;
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};
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// ----------------------------------------------------------------------------
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// wxRendererNative: abstracts drawing methods needed by the native controls
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxRendererNative
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{
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public:
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// drawing functions
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// -----------------
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// draw the header control button (used by wxListCtrl)
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virtual void DrawHeaderButton(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0) = 0;
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// draw the expanded/collapsed icon for a tree control item
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virtual void DrawTreeItemButton(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0) = 0;
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// draw the border for sash window: this border must be such that the sash
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// drawn by DrawSash() blends into it well
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virtual void DrawSplitterBorder(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0) = 0;
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// draw a (vertical) sash
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virtual void DrawSplitterSash(wxWindow *win,
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wxDC& dc,
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const wxSize& size,
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wxCoord position,
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wxOrientation orient,
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int flags = 0) = 0;
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// draw a combobox dropdown button
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//
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// flags may use wxCONTROL_PRESSED and wxCONTROL_CURRENT
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virtual void DrawComboBoxDropButton(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0) = 0;
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// draw a dropdown arrow
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//
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// flags may use wxCONTROL_PRESSED and wxCONTROL_CURRENT
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virtual void DrawDropArrow(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0) = 0;
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// geometry functions
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// ------------------
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// get the splitter parameters: the x field of the returned point is the
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// sash width and the y field is the border width
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virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win) = 0;
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// pseudo constructors
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// -------------------
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// return the currently used renderer
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static wxRendererNative& Get();
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// return the generic implementation of the renderer
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static wxRendererNative& GetGeneric();
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// return the default (native) implementation for this platform
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static wxRendererNative& GetDefault();
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// changing the global renderer
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// ----------------------------
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#if wxUSE_DYNLIB_CLASS
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// load the renderer from the specified DLL, the returned pointer must be
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// deleted by caller if not NULL when it is not used any more
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static wxRendererNative *Load(const wxString& name);
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#endif // wxUSE_DYNLIB_CLASS
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// set the renderer to use, passing NULL reverts to using the default
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// renderer
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//
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// return the previous renderer used with Set() or NULL if none
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static wxRendererNative *Set(wxRendererNative *renderer);
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// miscellaneous stuff
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// -------------------
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// this function is used for version checking: Load() refuses to load any
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// DLLs implementing an older or incompatible version; it should be
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// implemented simply by returning wxRendererVersion::Current_XXX values
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virtual wxRendererVersion GetVersion() const = 0;
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// virtual dtor for any base class
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virtual ~wxRendererNative();
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};
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// ----------------------------------------------------------------------------
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// wxDelegateRendererNative: allows reuse of renderers code
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxDelegateRendererNative : public wxRendererNative
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{
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public:
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wxDelegateRendererNative()
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: m_rendererNative(GetGeneric()) { }
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wxDelegateRendererNative(wxRendererNative& rendererNative)
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: m_rendererNative(rendererNative) { }
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virtual void DrawHeaderButton(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0)
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{ m_rendererNative.DrawHeaderButton(win, dc, rect, flags); }
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virtual void DrawTreeItemButton(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0)
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{ m_rendererNative.DrawTreeItemButton(win, dc, rect, flags); }
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virtual void DrawSplitterBorder(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0)
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{ m_rendererNative.DrawSplitterBorder(win, dc, rect, flags); }
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virtual void DrawSplitterSash(wxWindow *win,
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wxDC& dc,
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const wxSize& size,
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wxCoord position,
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wxOrientation orient,
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int flags = 0)
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{ m_rendererNative.DrawSplitterSash(win, dc, size,
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position, orient, flags); }
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virtual void DrawComboBoxDropButton(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0)
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{ m_rendererNative.DrawComboBoxDropButton(win, dc, rect, flags); }
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virtual void DrawDropArrow(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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int flags = 0)
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{ m_rendererNative.DrawDropArrow(win, dc, rect, flags); }
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virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win)
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{ return m_rendererNative.GetSplitterParams(win); }
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virtual wxRendererVersion GetVersion() const
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{ return m_rendererNative.GetVersion(); }
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protected:
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wxRendererNative& m_rendererNative;
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DECLARE_NO_COPY_CLASS(wxDelegateRendererNative)
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};
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// ----------------------------------------------------------------------------
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// inline functions implementation
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// ----------------------------------------------------------------------------
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#ifndef wxHAS_NATIVE_RENDERER
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// default native renderer is the generic one then
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/* static */ inline
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wxRendererNative& wxRendererNative::GetDefault()
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{
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return GetGeneric();
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}
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#endif // !wxHAS_NATIVE_RENDERER
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#endif // _WX_RENDERER_H_
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