9a713b1149
This patch allows FL to be build as a DLL with the VC project files, I was only able to at chief it with the VC projects because the make file for building libs doesn't have any rule to build DLLs (at least I didn't see how to do it). However the FL demo applications can be build using FL in DLL form with MSVC project files and VC make files (as mentioned before the FL DLL it self can only be build using VC projects). This patch includes 2 files; 1 to change current FL files to work in DLL form and 1 extra include file that needs to be added in the FL include directory. Small note: if you want to use FL as a DLL you need to use wxWin as a DLL. Thanks, Hans. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17618 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
130 lines
3.9 KiB
C++
130 lines
3.9 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: gcupdatesmgr.h
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// Purpose: Header for cbGCUpdatesMgr class.
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// Author: Aleksandras Gluchovas
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// Modified by:
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// Created: 19/10/98
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// RCS-ID: $Id$
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// Copyright: (c) Aleksandras Gluchovas
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef __GCUPDATESMGR_G__
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#define __GCUPDATESMGR_G__
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#if defined(__GNUG__) && !defined(__APPLE__)
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#pragma interface "gcupdatesmgr.h"
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#endif
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#include "wx/fl/controlbar.h"
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#include "wx/fl/updatesmgr.h"
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#include "wx/fl/garbagec.h"
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/*
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This class implements optimized logic for refreshing
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the areas of frame layout that actually need to be updated.
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It is used as the default updates manager by wxFrameLayout.
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It is called 'Garbage Collecting' updates manager because
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its implementation tries to find out dependencies between bars,
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and to order them into a 'hierarchy'. This hierarchical sorting resembles
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the implementation of heap-garbage collectors, which resolve
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dependencies between references.
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Example: there are situations where the order in which the user
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moves windows does matter.
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\begin{verbatim}
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case 1)
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------ ---
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| A | |B|
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------ ---> | |
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--- --- ------
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|B| | A |
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| | ------
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---
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(future)
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(past)
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\end{verbatim}
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Past/future positions of A and B windows completely overlap, i.e.
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depend on each other, and there is no solution for
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moving the windows without refreshing both of them
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-- we have a cyclic dependency here. The garbage collection algorithm will
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find this cyclic dependecy and will force refresh after movement.
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\begin{verbatim}
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case 2)
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------
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| A |
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------ --->
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---
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|B| ------
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| | | A |
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--- ------
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---
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|B|
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| |
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---
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(future)
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(past)
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\end{verbatim}
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In this case past/future positions do not overlap, so
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it is enough only to move windows without refreshing them.
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Garbage collection will 'notice' this.
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There is also a third case, when overlapping is partial.
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In this case the refreshing can also be avoided by
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moving windows in the order of 'most-dependant' towards the
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'least-dependent'. GC handles this automatically, by
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sorting windows by their dependency-level (or 'hierarchy').
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See garbagec.h for more details of this method; garbagec.h/cpp
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implement sorting of generic dependencies and does not deal
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with graphical objects directly.
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Summary: garbage collection improves performance when complex or large
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windows are moved around, by reducing the number of repaints. It also helps
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to avoid dirty non-client areas of moved windows
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in some special cases of 'overlapping anomalies'.
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*/
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class WXFL_DECLSPEC cbGCUpdatesMgr : public cbSimpleUpdatesMgr
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{
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DECLARE_DYNAMIC_CLASS( cbGCUpdatesMgr )
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protected:
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GarbageCollector mGC;
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// Internal function for repositioning items.
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void DoRepositionItems( wxList& items );
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// Internal function for repositioning items.
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void AddItem( wxList& itemList,
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cbBarInfo* pBar,
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cbDockPane* pPane,
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wxRect& curBounds,
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wxRect& prevBounds );
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public:
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// Default constructor.
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cbGCUpdatesMgr(void) {}
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// Constructor, taking a frame layout.
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cbGCUpdatesMgr( wxFrameLayout* pPanel );
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// Receives notifications from the frame layout.
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virtual void OnStartChanges();
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// Refreshes the parts of the frame layout which need an update.
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virtual void UpdateNow();
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};
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#endif /* __GCUPDATESMGR_G__ */
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