Match the Windows plugin moving/sizing behavior on Linux.

This keep the sizing operations in WebPluginDelegateImpl, and does the moving in DidMove.  This more or less matches what currently happens on Windows.

Add a comment explaining this situation better.  Add some random comments and small code cleanup.

Remove the flash useragent spoofing hack on non-Windows, we don't need to worry about this for now.

Review URL: http://codereview.chromium.org/20304


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@9843 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 28 insertions, 18 deletions

diff --git a/webkit/glue/plugins/plugin_host.cc b/webkit/glue/plugins/plugin_host.cc
index 087abf8..8338b2a1a 100644
--- a/webkit/glue/plugins/plugin_host.cc
+++ b/webkit/glue/plugins/plugin_host.cc
@@ -580,6 +580,7 @@ NPError NPN_DestroyStream(NPP id, NPStream* stream, NPReason reason) {
 }
 
 const char* NPN_UserAgent(NPP id) {
+#if defined(OS_WIN)
   // Flash passes in a null id during the NP_initialize call.  We need to
   // default to the Mozilla user agent if we don't have an NPP instance or
   // else Flash won't request windowless mode.
@@ -589,16 +590,12 @@ const char* NPN_UserAgent(NPP id) {
       return webkit_glue::GetUserAgent(GURL()).c_str();
   }
 
-#if defined(OS_WIN)
-  static const char *UA = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20061103 Firefox/2.0a1";
-#elif defined(OS_MACOSX)
-  // TODO(port): this is probably wrong...
-  static const char *UA = "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_6; en-us) AppleWebKit/525.27.1 (KHTML, like Gecko) Version/3.2.1 Safari/525.27.1";
+  return "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20061103 Firefox/2.0a1";
 #else
-  // TODO(port): set appropriately for other platforms
-  static const char *UA = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20061103 Firefox/2.0a1";
+  // TODO(port): For now we always use our real useragent on Mac and Linux.
+  // We might eventually need to spoof for some plugins.
+  return webkit_glue::GetUserAgent(GURL()).c_str();
 #endif
-  return UA;
 }
 
 void NPN_Status(NPP id, const char* message) {
@@ -842,8 +839,7 @@ NPError  NPN_SetValue(NPP id, NPPVariable variable, void *value) {
     // Note: the documentation at http://developer.mozilla.org/en/docs/NPN_SetValue
     // is wrong.  When value is NULL, the mode is set to true.  This is the same
     // way Mozilla works.
-    bool mode = (value == 0);
-    plugin->set_windowless(mode);
+    plugin->set_windowless(value == 0);
     return NPERR_NO_ERROR;
   }
   case NPPVpluginTransparentBool:
diff --git a/webkit/glue/plugins/webplugin_delegate_impl.cc b/webkit/glue/plugins/webplugin_delegate_impl.cc
index 0ab5c02..bb3d527 100644
--- a/webkit/glue/plugins/webplugin_delegate_impl.cc
+++ b/webkit/glue/plugins/webplugin_delegate_impl.cc
@@ -690,7 +690,15 @@ bool WebPluginDelegateImpl::WindowedReposition(
   if (window_rect_ == window_rect && clip_rect_ == clip_rect)
     return false;
 
-  // Clipping is handled by WebPlugin.
+  // There are a few parts to managing the plugin windows:
+  //   - Initial geometry, show / resize / position the window.
+  //   - Geometry updates, resize the window.
+  //   - Geometry updates, move the window or update the clipping region.
+  // This code should handle the first two, positioning and sizing the window
+  // initially, and resizing it when the size changes.  Clipping and moving are
+  // handled separately by WebPlugin, after it has called this code.  This
+  // allows window moves, like scrolling, to be synchronized with painting.
+  // See WebPluginImpl::setFrameRect().
   if (window_rect.size() != window_rect_.size()) {
     ::SetWindowPos(windowed_handle_,
                    NULL,
diff --git a/webkit/glue/plugins/webplugin_delegate_impl_gtk.cc b/webkit/glue/plugins/webplugin_delegate_impl_gtk.cc
index 40da272b..4236c25 100644
--- a/webkit/glue/plugins/webplugin_delegate_impl_gtk.cc
+++ b/webkit/glue/plugins/webplugin_delegate_impl_gtk.cc
@@ -341,17 +341,23 @@ bool WebPluginDelegateImpl::WindowedReposition(
   if (window_rect_ == window_rect && clip_rect_ == clip_rect)
     return false;
 
-  // Clipping is handled by WebPlugin.
-  GtkAllocation allocation = { window_rect.x(), window_rect.y(),
-                               window_rect.width(), window_rect.height() };
-  // Tell our parent GtkFixed container where to place the widget.
-  gtk_fixed_move(
-      GTK_FIXED(parent_), windowed_handle_, window_rect.x(), window_rect.y());
-  gtk_widget_size_allocate(windowed_handle_, &allocation);
+
+  if (window_rect.size() != window_rect_.size()) {
+    // Clipping is handled by WebPlugin.
+    GtkAllocation allocation = { window_rect.x(), window_rect.y(),
+                                 window_rect.width(), window_rect.height() };
+    // TODO(deanm): we probably want to match Windows here, where x and y is
+    // fixed at 0, and we're just sizing the window.
+    // Tell our parent GtkFixed container where to place the widget.
+    gtk_fixed_move(
+        GTK_FIXED(parent_), windowed_handle_, window_rect.x(), window_rect.y());
+    gtk_widget_size_allocate(windowed_handle_, &allocation);
+  }
 
   window_rect_ = window_rect;
   clip_rect_ = clip_rect;
 
+  // TODO(deanm): Is this really needed?
   // Ensure that the entire window gets repainted.
   gtk_widget_queue_draw(windowed_handle_);