Initial check-in

git-svn-id: svn://10.0.0.236/trunk@507 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/layout/html/base/src/nsAbsoluteFrame.cpp

@@ -0,0 +1,119 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+#include "nsAbsoluteFrame.h"
+#include "nsIContent.h"
+#include "nsIContentDelegate.h"
+#include "nsViewsCID.h"
+#include "nsIView.h"
+#include "nsIViewManager.h"
+
+nsresult
+AbsoluteFrame::NewFrame(nsIFrame**  aInstancePtrResult,
+                        nsIContent* aContent,
+                        PRInt32     aIndexInParent,
+                        nsIFrame*   aParent)
+{
+  NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
+  if (nsnull == aInstancePtrResult) {
+    return NS_ERROR_NULL_POINTER;
+  }
+  nsIFrame* it = new AbsoluteFrame(aContent, aIndexInParent, aParent);
+  if (nsnull == it) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  *aInstancePtrResult = it;
+  return NS_OK;
+}
+
+AbsoluteFrame::AbsoluteFrame(nsIContent* aContent,
+                             PRInt32     aIndexInParent,
+                             nsIFrame*   aParent)
+  : nsFrame(aContent, aIndexInParent, aParent)
+{
+  mFrame = nsnull;
+}
+
+AbsoluteFrame::~AbsoluteFrame()
+{
+}
+
+NS_METHOD AbsoluteFrame::ResizeReflow(nsIPresContext*  aPresContext,
+                                      nsReflowMetrics& aDesiredSize,
+                                      const nsSize&    aMaxSize,
+                                      nsSize*          aMaxElementSize,
+                                      ReflowStatus&    aStatus)
+{
+  // Have we created the absolutely positioned item yet?
+  if (nsnull == mFrame) {
+    // Create the absolutely positioned item as a pseudo-frame child. We'll
+    // also create a view
+    nsIContentDelegate* delegate = mContent->GetDelegate(aPresContext);
+
+    mFrame= delegate->CreateFrame(aPresContext, mContent, mIndexInParent, this);
+    NS_RELEASE(delegate);
+
+    // Set the style context for the frame
+    mFrame->SetStyleContext(mStyleContext);
+
+    // Resize reflow the anchored item into the available space
+    mFrame->ResizeReflow(aPresContext, aDesiredSize, aMaxSize, nsnull, aStatus);
+    mFrame->SizeTo(aDesiredSize.width, aDesiredSize.height);
+
+    // Create a view for the frame and position it
+    // XXX This isn't correct. We should look for a containing frame that is absolutely
+    // positioned and use its local coordinate system, or the root content frame
+    nsIFrame* parent;
+    nsIView*  parentView;
+    nsIView*  view;
+
+    GetParentWithView(parent);
+    parent->GetView(parentView);
+    static NS_DEFINE_IID(kViewCID, NS_VIEW_CID);
+    static NS_DEFINE_IID(kIViewIID, NS_IVIEW_IID);
+  
+    nsresult result = NSRepository::CreateInstance(kViewCID, 
+                                                   nsnull, 
+                                                   kIViewIID, 
+                                                   (void **)&view);
+    if (NS_OK == result) {
+      nsRect          rect(0, 0, aDesiredSize.width, aDesiredSize.height);
+      nsIViewManager* viewManager = parentView->GetViewManager();
+  
+      // Initialize the view
+      NS_ASSERTION(nsnull != viewManager, "null view manager");
+  
+      view->Init(viewManager, rect, parentView);
+      viewManager->InsertChild(parentView, view, 0);
+  
+      NS_RELEASE(viewManager);
+      mFrame->SetView(view);  
+      NS_RELEASE(view);
+    }
+    NS_RELEASE(parentView);
+  }
+
+  // Return our desired size as (0, 0)
+  return nsFrame::ResizeReflow(aPresContext, aDesiredSize, aMaxSize, aMaxElementSize, aStatus);
+}
+
+NS_METHOD AbsoluteFrame::ListTag(FILE* out) const
+{
+  fputs("*absolute", out);
+  fprintf(out, "(%d)@%p", mIndexInParent, this);
+  return NS_OK;
+}

mozilla/layout/html/base/src/nsAbsoluteFrame.h

@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+#ifndef nsAbsoluteFrame_h___
+#define nsAbsoluteFrame_h___
+
+#include "nsFrame.h"
+
+// Implementation of a frame that's used as a placeholder for an absolutely
+// positioned frame
+class AbsoluteFrame : public nsFrame
+{
+public:
+  /**
+   * Create a new absolutely positioned frame
+   */
+  static nsresult NewFrame(nsIFrame**  aInstancePtrResult,
+                           nsIContent* aContent,
+                           PRInt32     aIndexInParent,
+                           nsIFrame*   aParent);
+
+  // Resize reflow methods
+  NS_IMETHOD  ResizeReflow(nsIPresContext*  aPresContext,
+                           nsReflowMetrics& aDesiredSize,
+                           const nsSize&    aMaxSize,
+                           nsSize*          aMaxElementSize,
+                           ReflowStatus&    aStatus);
+  NS_IMETHOD  ListTag(FILE* out = stdout) const;
+
+protected:
+  nsIFrame* mFrame;  // the actual absolutely positioned frame
+
+  // Constructor. Takes as arguments the content object, the index in parent,
+  // and the Frame for the content parent
+  AbsoluteFrame(nsIContent* aContent,
+                PRInt32     aIndexInParent,
+                nsIFrame*   aParent);
+
+  virtual ~AbsoluteFrame();
+};
+
+#endif /* nsAbsoluteFrame_h___ */