X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8e08b761b0c5ecb6df295785b78f1f3637331887..cf9b63b38a7ed96d8a824256f1fb23565c0fb52a:/contrib/src/fl/antiflickpl.cpp

diff --git a/contrib/src/fl/antiflickpl.cpp b/contrib/src/fl/antiflickpl.cpp
index 419b186756..5b15365040 100644
--- a/contrib/src/fl/antiflickpl.cpp
+++ b/contrib/src/fl/antiflickpl.cpp
@@ -1,18 +1,14 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        No names yet.
-// Purpose:     Contrib. demo
+// Name:        antiflickpl.cpp
+// Purpose:     Double-buffering plugin class for reducing flickering.
 // Author:      Aleksandras Gluchovas (@Lithuania)
 // Modified by:
 // Created:     23/10/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Aleksandras Gluchovas
-// Licence:   	wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
  
-#ifdef __GNUG__
-    #pragma implementation "antiflickpl.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -32,8 +28,8 @@ IMPLEMENT_DYNAMIC_CLASS( cbAntiflickerPlugin, cbPluginBase )
 
 BEGIN_EVENT_TABLE( cbAntiflickerPlugin, cbPluginBase )
 
-	EVT_PL_START_DRAW_IN_AREA  ( cbAntiflickerPlugin::OnStartDrawInArea  )
-	EVT_PL_FINISH_DRAW_IN_AREA ( cbAntiflickerPlugin::OnFinishDrawInArea )
+    EVT_PL_START_DRAW_IN_AREA  ( cbAntiflickerPlugin::OnStartDrawInArea  )
+    EVT_PL_FINISH_DRAW_IN_AREA ( cbAntiflickerPlugin::OnFinishDrawInArea )
 
 END_EVENT_TABLE()
 
@@ -49,188 +45,185 @@ wxMemoryDC* cbAntiflickerPlugin::mpHorizBufDc = 0;
 // constructors
 
 cbAntiflickerPlugin::cbAntiflickerPlugin(void)
-	: mpLRUBufDc  ( NULL ),
-	  mLRUArea    ( -1,-1, -1,-1 )
+    : mpLRUBufDc  ( NULL ),
+      mLRUArea    ( -1,-1, -1,-1 )
 {
-	++mRefCount;
+    ++mRefCount;
 }
 
 cbAntiflickerPlugin::cbAntiflickerPlugin( wxFrameLayout* pPanel, int paneMask )
 
-	: cbPluginBase( pPanel, paneMask ),
-	  mpLRUBufDc  ( NULL ),
-	  mLRUArea    ( -1,-1, -1,-1 )
+    : cbPluginBase( pPanel, paneMask ),
+      mpLRUBufDc  ( NULL ),
+      mLRUArea    ( -1,-1, -1,-1 )
 {
-	++mRefCount;
+    ++mRefCount;
 }
 
 cbAntiflickerPlugin::~cbAntiflickerPlugin()
 {
-	if ( --mRefCount == 0 )
-	{
-		if ( mpHorizBuf )
-		{
-			mpHorizBufDc->SelectObject( wxNullBitmap );
-			delete mpHorizBuf;
-			delete mpHorizBufDc;
-			mpHorizBuf   = 0;
-			mpHorizBufDc = 0;
-		}
-
-		if ( mpVertBuf ) 
-		{
-			mpVertBufDc->SelectObject( wxNullBitmap );
-			delete mpVertBuf; 
-			delete mpVertBufDc;
-			mpVertBuf   = 0;
-			mpVertBufDc = 0;
-		}
-	}
+    if ( --mRefCount == 0 )
+    {
+        if ( mpHorizBuf )
+        {
+            mpHorizBufDc->SelectObject( wxNullBitmap );
+            delete mpHorizBuf;
+            delete mpHorizBufDc;
+            mpHorizBuf   = 0;
+            mpHorizBufDc = 0;
+        }
+
+        if ( mpVertBuf ) 
+        {
+            mpVertBufDc->SelectObject( wxNullBitmap );
+            delete mpVertBuf; 
+            delete mpVertBufDc;
+            mpVertBuf   = 0;
+            mpVertBufDc = 0;
+        }
+    }
 }
 
 wxDC* cbAntiflickerPlugin::FindSuitableBuffer( const wxRect& forArea )
 {
-	if ( mpVertBuf )
-	{
-		if ( mpVertBuf->GetHeight() >= forArea.height &&
-			 mpVertBuf->GetWidth()  >= forArea.width )
-
-			 return mpVertBufDc;
-	}
-	else
-	if ( mpHorizBuf )
-	{
-		if ( mpHorizBuf->GetHeight() >= forArea.height &&
-			 mpHorizBuf->GetWidth()  >= forArea.width )
-
-			 return mpHorizBufDc;
-	}
-
-	return 0;
+    if ( mpVertBuf )
+    {
+        if ( mpVertBuf->GetHeight() >= forArea.height &&
+             mpVertBuf->GetWidth()  >= forArea.width )
+            return mpVertBufDc;
+    }
+    else
+        if ( mpHorizBuf )
+        {
+            if ( mpHorizBuf->GetHeight() >= forArea.height &&
+                 mpHorizBuf->GetWidth()  >= forArea.width )
+                return mpHorizBufDc;
+        }
+
+    return 0;
 }
 
 wxDC* cbAntiflickerPlugin::AllocNewBuffer( const wxRect& forArea )
 {
-	// TBD:: preallocate bit larger bitmap at once, to avoid
-	//       excessive realocations later
-
-	// check whether the given area is oriented horizontally
-	// or verticallya and choose correspoinding bitmap to create or
-	// recreate
-
-	if ( forArea.height > forArea.width )
-	{
-		wxSize prevDim( 0,0 );
-
-		if ( mpVertBuf ) 
-		{
-			prevDim.x = mpVertBuf->GetWidth();
-			prevDim.y = mpVertBuf->GetHeight();
-
-			mpVertBufDc->SelectObject( wxNullBitmap );
-			delete mpVertBuf;
-		}
-		else
-			mpVertBufDc = new wxMemoryDC();
-		
-		mpVertBuf = new wxBitmap( int( wxMax(forArea.width,  prevDim.x ) ), 
-								  int( wxMax(forArea.height, prevDim.y ) )
-								);
-
-		mpVertBufDc->SelectObject( *mpVertBuf );
-
-		return mpVertBufDc;
-	}
-	else
-	{
-		wxSize prevDim( 0,0 );
-
-		if ( mpHorizBuf ) 
-		{
-			prevDim.x = mpHorizBuf->GetWidth();
-			prevDim.y = mpHorizBuf->GetHeight();
-
-			mpHorizBufDc->SelectObject( wxNullBitmap );
-			delete mpHorizBuf;
-		}
-		else
-			mpHorizBufDc = new wxMemoryDC();
-		
-		mpHorizBuf = new wxBitmap( int( wxMax(forArea.width,  prevDim.x ) ), 
-								   int( wxMax(forArea.height, prevDim.y ) )
-								 );
-
-		mpHorizBufDc->SelectObject( *mpHorizBuf );
-
-		return mpHorizBufDc;
-	}
+    // TBD:: preallocate bit larger bitmap at once, to avoid
+    //       excessive realocations later
+
+    // check whether the given area is oriented horizontally
+    // or vertically and choose corresponding bitmap to create or
+    // recreate
+
+    if ( forArea.height > forArea.width )
+    {
+        wxSize prevDim( 0,0 );
+
+        if ( mpVertBuf ) 
+        {
+            prevDim.x = mpVertBuf->GetWidth();
+            prevDim.y = mpVertBuf->GetHeight();
+
+            mpVertBufDc->SelectObject( wxNullBitmap );
+            delete mpVertBuf;
+        }
+        else
+            mpVertBufDc = new wxMemoryDC();
+
+        mpVertBuf = new wxBitmap( int( wxMax(forArea.width,  prevDim.x ) ), 
+                                  int( wxMax(forArea.height, prevDim.y ) )
+                                );
+
+        mpVertBufDc->SelectObject( *mpVertBuf );
+
+        return mpVertBufDc;
+    }
+    else
+    {
+        wxSize prevDim( 0,0 );
+
+        if ( mpHorizBuf ) 
+        {
+            prevDim.x = mpHorizBuf->GetWidth();
+            prevDim.y = mpHorizBuf->GetHeight();
+
+            mpHorizBufDc->SelectObject( wxNullBitmap );
+            delete mpHorizBuf;
+        }
+        else
+            mpHorizBufDc = new wxMemoryDC();
+
+        mpHorizBuf = new wxBitmap( int( wxMax(forArea.width,  prevDim.x ) ), 
+                                   int( wxMax(forArea.height, prevDim.y ) )
+                                 );
+
+        mpHorizBufDc->SelectObject( *mpHorizBuf );
+
+        return mpHorizBufDc;
+    }
 }
 
 void cbAntiflickerPlugin::OnStartDrawInArea( cbStartDrawInAreaEvent& event )
 {
-	wxASSERT( mpLRUBufDc == NULL ); // DBG:: see comments in OnFinishDrawInArea(..) method
+    wxASSERT( mpLRUBufDc == NULL ); // DBG:: see comments in OnFinishDrawInArea(..) method
 
-	// short-cut
-	wxRect& area = event.mArea;
+    // short-cut
+    wxRect& area = event.mArea;
 
-	if ( event.mArea.width  < 0 || 
-		 event.mArea.height < 0 ) return;
+    if ( event.mArea.width  < 0 || 
+         event.mArea.height < 0 ) return;
 
-	// memorize given area
-	mLRUArea.x      = area.x;
-	mLRUArea.y      = area.y;
-	mLRUArea.width  = area.width;
-	mLRUArea.height = area.height;
+    // memorize given area
+    mLRUArea.x      = area.x;
+    mLRUArea.y      = area.y;
+    mLRUArea.width  = area.width;
+    mLRUArea.height = area.height;
 
-	wxDC* pBufDc = FindSuitableBuffer( area );
+    wxDC* pBufDc = FindSuitableBuffer( area );
 
-	if ( !pBufDc )
-	
-		pBufDc = AllocNewBuffer( area );
+    if ( !pBufDc )
+        pBufDc = AllocNewBuffer( area );
 
-	pBufDc->SetDeviceOrigin( -area.x, -area.y );
+    pBufDc->SetDeviceOrigin( -area.x, -area.y );
 
-	pBufDc->SetClippingRegion( area.x,     area.y,
-							   area.width, area.height );
+    pBufDc->SetClippingRegion( area.x,     area.y,
+                               area.width, area.height );
 
-	wxClientDC clntDc( &mpLayout->GetParentFrame() );
+    wxClientDC clntDc( &mpLayout->GetParentFrame() );
 
-	(*event.mppDc) = pBufDc;
+    (*event.mppDc) = pBufDc;
 
-	mpLRUBufDc = pBufDc; // memorize buffer, which will be flushed to screen
-	                     // upon "commiting" the drawing
+    mpLRUBufDc = pBufDc; // memorize buffer, which will be flushed to screen
+                         // upon "commiting" the drawing
 
-	/*
-	// OLD STUFF::
-	mpLRUBufDc->Blit( pos.x, pos.y, size.x, size.y,
-				      &clntDc, pos.x, pos.y, wxCOPY );
-					*/
+    /*
+    // OLD STUFF::
+    mpLRUBufDc->Blit( pos.x, pos.y, size.x, size.y,
+                      &clntDc, pos.x, pos.y, wxCOPY );
+                    */
 }
 
 void cbAntiflickerPlugin::OnFinishDrawInArea( cbFinishDrawInAreaEvent& event )
 {
-	wxRect& area = event.mArea;
+    wxRect& area = event.mArea;
 
-	if ( event.mArea.width  < 0 || 
-		 event.mArea.height < 0 ) return;
+    if ( event.mArea.width  < 0 || 
+         event.mArea.height < 0 ) return;
 
-	wxASSERT( mpLRUBufDc ); // DBG:: OnStartDrawInArea should be called first
+    wxASSERT( mpLRUBufDc ); // DBG:: OnStartDrawInArea should be called first
 
-	// FOR NOW:: OnStartDrawInArea(..) should be immediately followed
-	//           by OnFinishDrawInArea(..) for the same area
+    // FOR NOW:: OnStartDrawInArea(..) should be immediately followed
+    //           by OnFinishDrawInArea(..) for the same area
 
-	wxASSERT( mLRUArea.x      == area.x      );
-	wxASSERT( mLRUArea.y      == area.y      );
-	wxASSERT( mLRUArea.width  == area.width  );
-	wxASSERT( mLRUArea.height == area.height );
+    wxASSERT( mLRUArea.x      == area.x      );
+    wxASSERT( mLRUArea.y      == area.y      );
+    wxASSERT( mLRUArea.width  == area.width  );
+    wxASSERT( mLRUArea.height == area.height );
 
-	wxClientDC clntDc( &mpLayout->GetParentFrame() );
+    wxClientDC clntDc( &mpLayout->GetParentFrame() );
 
-	// "commit" drawings in one-shot
-	clntDc.Blit( area.x, area.y, area.width, area.height,
-				 mpLRUBufDc, area.x, area.y, wxCOPY );
+    // "commit" drawings in one-shot
+    clntDc.Blit( area.x, area.y, area.width, area.height,
+                 mpLRUBufDc, area.x, area.y, wxCOPY );
 
-	mpLRUBufDc->DestroyClippingRegion();
-	mpLRUBufDc = 0;
+    mpLRUBufDc->DestroyClippingRegion();
+    mpLRUBufDc = 0;
 }