added wxRendererNative to be used by the generic controls for rendering platfomr-specific parts

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22151 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2003-07-20 17:52:26 +00:00
parent f509d00d20
commit 9c7f49f569
13 changed files with 1021 additions and 284 deletions
--- a/include/wx/renderer.h
+++ b/include/wx/renderer.h
@@ -0,0 +1,116 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/renderer.h
+// Purpose:     wxRendererNative class declaration
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     20.07.2003
+// RCS-ID:      $Id$
+// Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+/*
+   Renderers are used in wxWindows for two similar but different things:
+    (a) wxUniversal uses them to draw everything, i.e. all the control
+    (b) all the native ports use them to draw generic controls only
+
+   wxUniversal needs more functionality than what is included in the base class
+   as it needs to draw stuff like scrollbars which are never going to be
+   generic. So we put the bare minimum needed by the native ports here and the
+   full wxRenderer class is declared in wx/univ/renderer.h and is only used by
+   wxUniveral (although note that native ports can load wxRenderer objects from
+   theme DLLs and use them as wxRendererNative ones, of course).
+ */
+
+#ifndef _WX_RENDERER_H_
+#define _WX_RENDERER_H_
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// control state flags used in wxRenderer and wxColourScheme
+enum
+{
+    wxCONTROL_DISABLED   = 0x00000001,  // control is disabled
+    wxCONTROL_FOCUSED    = 0x00000002,  // currently has keyboard focus
+    wxCONTROL_PRESSED    = 0x00000004,  // (button) is pressed
+    wxCONTROL_ISDEFAULT  = 0x00000008,  // only applies to the buttons
+    wxCONTROL_ISSUBMENU  = wxCONTROL_ISDEFAULT, // only for menu items
+    wxCONTROL_EXPANDED   = wxCONTROL_ISDEFAULT, // only for the tree items
+    wxCONTROL_CURRENT    = 0x00000010,  // mouse is currently over the control
+    wxCONTROL_SELECTED   = 0x00000020,  // selected item in e.g. listbox
+    wxCONTROL_CHECKED    = 0x00000040,  // (check/radio button) is checked
+    wxCONTROL_CHECKABLE  = 0x00000080,  // (menu) item can be checked
+
+    wxCONTROL_FLAGS_MASK = 0x000000ff,
+
+    // this is a pseudo flag not used directly by wxRenderer but rather by some
+    // controls internally
+    wxCONTROL_DIRTY      = 0x80000000
+};
+
+// ----------------------------------------------------------------------------
+// wxRendererNative: abstracts drawing methods needed by the native controls
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxRendererNative
+{
+public:
+    // drawing functions
+    // -----------------
+
+    // draw the header control button (used by wxListCtrl)
+    virtual void DrawHeaderButton(wxWindow *win,
+                                  wxDC& dc,
+                                  const wxRect& rect,
+                                  int flags = 0) = 0;
+
+    // draw the expanded/collapsed icon for a tree control item
+    virtual void DrawTreeItemButton(wxWindow *win,
+                                    wxDC& dc,
+                                    const wxRect& rect,
+                                    int flags = 0) = 0;
+
+
+    // pseudo constructors
+    // -------------------
+
+    // return the currently used renderer
+    static wxRendererNative& Get();
+
+    // return the generic implementation of the renderer
+    static wxRendererNative& GetGeneric();
+};
+
+// ----------------------------------------------------------------------------
+// wxDelegateRendererNative: allows reuse of renderers code
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxDelegateRendererNative : public wxRendererNative
+{
+public:
+    wxDelegateRendererNative()
+        : m_rendererNative(GetGeneric()) { }
+
+    wxDelegateRendererNative(wxRendererNative& rendererNative)
+        : m_rendererNative(rendererNative) { }
+
+
+    virtual void DrawHeaderButton(wxWindow *win,
+                                  wxDC& dc,
+                                  const wxRect& rect,
+                                  int flags = 0)
+        { m_rendererNative.DrawHeaderButton(win, dc, rect, flags); }
+    virtual void DrawTreeItemButton(wxWindow *win,
+                                    wxDC& dc,
+                                    const wxRect& rect,
+                                    int flags = 0)
+        { m_rendererNative.DrawTreeItemButton(win, dc, rect, flags); }
+
+protected:
+    wxRendererNative& m_rendererNative;
+};
+
+#endif // _WX_RENDERER_H_
+