Add zooming notifications to Pepper. This allows the plugin to respond to full page zooms without hardcoding the shortcuts for each platform/browser and allows the menus to work.

Review URL: http://codereview.chromium.org/1320007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@42799 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 26 insertions, 0 deletions

diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index f9f875d..7c0882b 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -3453,6 +3453,24 @@ void RenderView::OnZoom(PageZoom::Function function) {
   if (!webview())  // Not sure if this can happen, but no harm in being safe.
     return;
 
+  // Should we be saving zoom levels for plugins?  It's not clear, so for now
+  // don't.
+  if (webview()->mainFrame()->document().isPluginDocument()) {
+    webkit_glue::WebPluginDelegate* delegate = GetDelegateForPluginDocument();
+    int zoom;
+    if (function == PageZoom::RESET) {
+      zoom = 0;
+    } else if (function == PageZoom::ZOOM_OUT) {
+      zoom = -1;
+    } else if (function == PageZoom::ZOOM_IN) {
+      zoom = 1;
+    } else {
+      NOTREACHED();
+    }
+    delegate->Zoom(zoom);
+    return;
+  }
+
   int zoom_level = webview()->zoomLevel();
   int new_zoom_level = webview()->setZoomLevel(false,
       (function == PageZoom::RESET) ? 0 : (zoom_level + function));
diff --git a/chrome/renderer/webplugin_delegate_pepper.cc b/chrome/renderer/webplugin_delegate_pepper.cc
index 70ce34e..8f9d49c 100644
--- a/chrome/renderer/webplugin_delegate_pepper.cc
+++ b/chrome/renderer/webplugin_delegate_pepper.cc
@@ -355,6 +355,13 @@ void WebPluginDelegatePepper::SelectedFindResultChanged(int index) {
         find_identifier_, index + 1, WebKit::WebRect());
 }
 
+void WebPluginDelegatePepper::Zoom(int factor) {
+  NPPExtensions* extensions = NULL;
+  instance()->NPP_GetValue(NPPVPepperExtensions, &extensions);
+  if (extensions && extensions->zoom)
+    extensions->zoom(instance()->npp(), factor);
+}
+
 NPError WebPluginDelegatePepper::Device2DQueryCapability(int32 capability,
                                                          int32* value) {
   return NPERR_GENERIC_ERROR;
diff --git a/chrome/renderer/webplugin_delegate_pepper.h b/chrome/renderer/webplugin_delegate_pepper.h
index 13c1f47..1ffc457 100644
--- a/chrome/renderer/webplugin_delegate_pepper.h
+++ b/chrome/renderer/webplugin_delegate_pepper.h
@@ -82,6 +82,7 @@ class WebPluginDelegatePepper : public webkit_glue::WebPluginDelegate {
   virtual void StopFind();
   virtual void NumberOfFindResultsChanged(int total, bool final_result);
   virtual void SelectedFindResultChanged(int index);
+  virtual void Zoom(int factor);
 
   // WebPlugin2DDeviceDelegate implementation.
   virtual NPError Device2DQueryCapability(int32 capability, int32* value);