Expose webkit scaling factor before calling WebFrame::PrintPage()

webkit/glue/webframe_impl.cc

 /*
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 289 matching lines @@
  public:
   ChromePrintContext(Frame* frame)
       : PrintContext(frame),
         printed_page_width_(0) {
   }
   void begin(float width) {
     DCHECK(!printed_page_width_);
     printed_page_width_ = width;
     WebCore::PrintContext::begin(printed_page_width_);
   }
+  float getPageShrink(int pageNumber) {
+    IntRect pageRect = m_pageRects[pageNumber];
+    return printed_page_width_ / pageRect.width();
+  }
   // Spools the printed page, a subrect of m_frame.
   // Skip the scale step. NativeTheme doesn't play well with scaling. Scaling
   // is done browser side instead.
   // Returns the scale to be applied.
   float spoolPage(GraphicsContext& ctx, int pageNumber) {
     IntRect pageRect = m_pageRects[pageNumber];
     float scale = printed_page_width_ / pageRect.width();
 
     ctx.save();
     ctx.translate(static_cast<float>(-pageRect.x()),
@@ skipping 1557 matching lines @@
   print_context_->begin(rect.width());
   float page_height;
   // We ignore the overlays calculation for now since they are generated in the
   // browser. page_height is actually an output parameter.
   print_context_->computePageRects(rect, 0, 0, 1.0, page_height);
   if (page_count)
     *page_count = print_context_->pageCount();
   return true;
 }
 
+float WebFrameImpl::GetPrintPageShrink(int page) {
+  // Ensure correct state.
+  if (!print_context_.get() || page < 0 || !frame() || !frame()->document()) {

[M-A Ruel, 2009/04/27 18:41:13]

I don't think it's worth looking at frame() or frame()->document() here.

+    NOTREACHED();
+    return 0;
+  }
+
+  return print_context_->getPageShrink(page);
+}
+
 float WebFrameImpl::PrintPage(int page, skia::PlatformCanvas* canvas) {
   // Ensure correct state.
   if (!print_context_.get() || page < 0 || !frame() || !frame()->document()) {
     NOTREACHED();
     return 0;
   }
 
 #if defined(OS_WIN) || defined(OS_LINUX)
   PlatformContextSkia context(canvas);
   GraphicsContext spool(&context);
@@ skipping 55 matching lines @@
   return password_listeners_.get(input_element);
 }
 
 void WebFrameImpl::ClearPasswordListeners() {
   for (PasswordListenerMap::iterator iter = password_listeners_.begin();
        iter != password_listeners_.end(); ++iter) {
     delete iter->second;
   }
   password_listeners_.clear();
 }