From da40aa33506447970ea91f7dfd5ab0b98d815258 Mon Sep 17 00:00:00 2001
From: "waqar%netscape.com"
 <waqar%netscape.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Tue, 18 Jan 2000 21:55:31 +0000
Subject: [PATCH] # 24238 r kmcclusk@netscape.com d Added ScrollWidgets methods
 to nsWindow. This is same bug as 22067   for windows.

git-svn-id: svn://10.0.0.236/trunk@58126 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/widget/src/gtk/nsWindow.cpp | 29 +++++++++++++++++++++++++++++
 mozilla/widget/src/gtk/nsWindow.h   |  1 +
 2 files changed, 30 insertions(+)

diff --git a/mozilla/widget/src/gtk/nsWindow.cpp b/mozilla/widget/src/gtk/nsWindow.cpp
index 15603936a21..34a834688eb 100644
--- a/mozilla/widget/src/gtk/nsWindow.cpp
+++ b/mozilla/widget/src/gtk/nsWindow.cpp
@@ -1734,6 +1734,35 @@ NS_IMETHODIMP nsWindow::Scroll(PRInt32 aDx, PRInt32 aDy, nsRect *aClipRect)
   }
   return NS_OK;
 }
+//-------------------------------------------------------------------------
+//
+// Scroll the bits of a window
+//
+//-------------------------------------------------------------------------
+
+NS_IMETHODIMP nsWindow::ScrollWidgets(PRInt32 aDx, PRInt32 aDy)
+{
+  UnqueueDraw();
+  mUpdateArea->Offset(aDx, aDy);
+  //  printf("mScrollExposeCounter++ = %i\n", mScrollExposeCounter);
+  mScrollExposeCounter++;
+
+  if (mSuperWin) {
+    // save the old backing color
+    nscolor currentColor = GetBackgroundColor();
+    // this isn't too painful to do right before a scroll.
+    // as owen says "it's just 12 bytes sent to the server."
+    // and it makes scrolling look a lot better while still
+    // preserving the gray color when you drag another window
+    // on top or when just creating a window
+    gdk_window_set_back_pixmap(mSuperWin->bin_window, NULL, 0);
+    // scroll baby, scroll!
+    gdk_superwin_scroll(mSuperWin, aDx, aDy);
+    // reset the color
+    SetBackgroundColor(currentColor);
+  }
+  return NS_OK;
+}
 
 NS_IMETHODIMP nsWindow::ScrollRect(nsRect &aSrcRect, PRInt32 aDx, PRInt32 aDy)
 {
diff --git a/mozilla/widget/src/gtk/nsWindow.h b/mozilla/widget/src/gtk/nsWindow.h
index d65869bb312..29ebafea793 100644
--- a/mozilla/widget/src/gtk/nsWindow.h
+++ b/mozilla/widget/src/gtk/nsWindow.h
@@ -62,6 +62,7 @@ public:
   virtual void*        GetNativeData(PRUint32 aDataType);
 
   NS_IMETHOD           Scroll(PRInt32 aDx, PRInt32 aDy, nsRect *aClipRect);
+  NS_IMETHOD           ScrollWidgets(PRInt32 aDx, PRInt32 aDy);
   NS_IMETHOD           ScrollRect(nsRect &aSrcRect, PRInt32 aDx, PRInt32 aDy);
 
   NS_IMETHOD           SetTitle(const nsString& aTitle);