Add ephy_embed_scroll_pixels.

2005-12-07  Christian Persch  <chpe@cvs.gnome.org>

	* embed/ephy-embed.c: (ephy_embed_scroll),
	(ephy_embed_page_scroll), (ephy_embed_scroll_pixels):
	* embed/ephy-embed.h:
	* embed/mozilla/EphyBrowser.cpp:
	* embed/mozilla/EphyBrowser.h:
	* embed/mozilla/mozilla-embed.cpp:

	Add ephy_embed_scroll_pixels.

5 files changed, 83 insertions, 20 deletions

diff --git a/embed/ephy-embed.c b/embed/ephy-embed.c
index 6eaf2b66c..c016408c7 100644
--- a/embed/ephy-embed.c
+++ b/embed/ephy-embed.c
@@ -654,10 +654,11 @@ ephy_embed_get_zoom (EphyEmbed *embed)
  *
  **/
 void
-ephy_embed_scroll (EphyEmbed *embed, int num_lines)
+ephy_embed_scroll (EphyEmbed *embed,
+		   int num_lines)
 {
 	EphyEmbedIface *iface = EPHY_EMBED_GET_IFACE (embed);
-	iface->scroll (embed, num_lines);
+	iface->scroll_lines (embed, num_lines);
 }
 
 /**
@@ -670,10 +671,30 @@ ephy_embed_scroll (EphyEmbed *embed, int num_lines)
  *
  **/
 void
-ephy_embed_page_scroll (EphyEmbed *embed, int num_pages)
+ephy_embed_page_scroll (EphyEmbed *embed,
+			int num_pages)
 {
 	EphyEmbedIface *iface = EPHY_EMBED_GET_IFACE (embed);
-	iface->page_scroll (embed, num_pages);
+	iface->scroll_pages (embed, num_pages);
+}
+
+/**
+ * ephy_embed_scroll_pixels:
+ * @embed: an #EphyEmbed
+ * @dx: the number of pixels to scroll in X direction
+ * @dy: the number of pixels to scroll in Y direction
+ *
+ * Scrolls the view by pixels. Positive numbers scroll down resp. right,
+ * negative numbers scroll up resp. left.
+ *
+ **/
+void
+ephy_embed_scroll_pixels (EphyEmbed *embed,
+			  int dx,
+			  int dy)
+{
+	EphyEmbedIface *iface = EPHY_EMBED_GET_IFACE (embed);
+	iface->scroll_pixels (embed, dx, dy);
 }
 
 /**
diff --git a/embed/ephy-embed.h b/embed/ephy-embed.h
index 6f1787222..6190c14b4 100644
--- a/embed/ephy-embed.h
+++ b/embed/ephy-embed.h
@@ -192,8 +192,13 @@ struct _EphyEmbedIface
 	void		   (* set_zoom)			(EphyEmbed *embed,
 							 float zoom);
 	float		   (* get_zoom)			(EphyEmbed *embed);
-	void		   (* scroll)			(EphyEmbed *embed, int num_lines);
-	void		   (* page_scroll)		(EphyEmbed *embed, int num_pages);
+	void		   (* scroll_lines)		(EphyEmbed *embed,
+							 int num_lines);
+	void		   (* scroll_pages)		(EphyEmbed *embed,
+	 						 int num_pages);
+	void		   (* scroll_pixels)		(EphyEmbed *embed,
+							 int dx,
+							 int dy);
 	char *		   (* get_encoding)		(EphyEmbed *embed);
 	gboolean	   (* has_automatic_encoding)	(EphyEmbed *embed);
 	void		   (* set_encoding)		(EphyEmbed *embed,
@@ -292,6 +297,10 @@ void		  ephy_embed_scroll			(EphyEmbed *embed,
 
 void		  ephy_embed_page_scroll		(EphyEmbed *embed,
 							 int num_pages);
+							 
+void		  ephy_embed_scroll_pixels		(EphyEmbed *embed,
+							 int dx,
+							 int dy);
 
 /* Encoding */
 char		 *ephy_embed_get_encoding		(EphyEmbed *embed);
diff --git a/embed/mozilla/EphyBrowser.cpp b/embed/mozilla/EphyBrowser.cpp
index b87fe9bf3..0f49127cf 100644
--- a/embed/mozilla/EphyBrowser.cpp
+++ b/embed/mozilla/EphyBrowser.cpp
@@ -928,9 +928,9 @@ nsresult EphyBrowser::GetZoom (float *aZoom)
 	return mdv->GetTextZoom (aZoom);
 }
 
-nsresult EphyBrowser::ScrollLines (int aNumLines)
+nsresult
+EphyBrowser::ScrollLines (PRInt32 aNumLines)
 {
-	nsresult rv;
 	nsCOMPtr<nsIDOMWindow> DOMWindow;
 
 	mWebBrowserFocus->GetFocusedWindow (getter_AddRefs(DOMWindow));
@@ -938,13 +938,14 @@ nsresult EphyBrowser::ScrollLines (int aNumLines)
 	{
 		DOMWindow = mDOMWindow;
 	}
+	NS_ENSURE_TRUE (DOMWindow, NS_ERROR_FAILURE);
 
-	DOMWindow->ScrollByLines (aNumLines);
+	return DOMWindow->ScrollByLines (aNumLines);
 }
 
-nsresult EphyBrowser::ScrollPages (int aNumPages)
+nsresult
+EphyBrowser::ScrollPages (PRInt32 aNumPages)
 {
-	nsresult rv;
 	nsCOMPtr<nsIDOMWindow> DOMWindow;
 
 	mWebBrowserFocus->GetFocusedWindow (getter_AddRefs(DOMWindow));
@@ -952,17 +953,35 @@ nsresult EphyBrowser::ScrollPages (int aNumPages)
 	{
 		DOMWindow = mDOMWindow;
 	}
+	NS_ENSURE_TRUE (DOMWindow, NS_ERROR_FAILURE);
 
-	DOMWindow->ScrollByPages (aNumPages);
+	return DOMWindow->ScrollByPages (aNumPages);
 }
 
+nsresult
+EphyBrowser::ScrollPixels (PRInt32 aDeltaX,
+			   PRInt32 aDeltaY)
+{
+	nsCOMPtr<nsIDOMWindow> DOMWindow;
 
-nsresult EphyBrowser::GetDocument (nsIDOMDocument **aDOMDocument)
+	mWebBrowserFocus->GetFocusedWindow (getter_AddRefs(DOMWindow));
+	if (!DOMWindow)
+	{
+		DOMWindow = mDOMWindow;
+	}
+	NS_ENSURE_TRUE (DOMWindow, NS_ERROR_FAILURE);
+
+	return DOMWindow->ScrollBy (aDeltaX, aDeltaY);
+}
+
+nsresult
+EphyBrowser::GetDocument (nsIDOMDocument **aDOMDocument)
 {
 	return mDOMWindow->GetDocument (aDOMDocument);
 }
 
-nsresult EphyBrowser::GetTargetDocument (nsIDOMDocument **aDOMDocument)
+nsresult
+EphyBrowser::GetTargetDocument (nsIDOMDocument **aDOMDocument)
 {
 	NS_ENSURE_TRUE (mWebBrowser, NS_ERROR_FAILURE);
 
diff --git a/embed/mozilla/EphyBrowser.h b/embed/mozilla/EphyBrowser.h
index 56058718b..ec605eb10 100644
--- a/embed/mozilla/EphyBrowser.h
+++ b/embed/mozilla/EphyBrowser.h
@@ -147,8 +147,9 @@ public:
 	nsresult SetZoom (float aTextZoom);
 	nsresult GetZoom (float *aTextZoom);
 
-	nsresult ScrollLines (int aNumLines);
-	nsresult ScrollPages (int aNumPages);
+	nsresult ScrollLines (PRInt32 aNumLines);
+	nsresult ScrollPages (PRInt32 aNumPages);
+	nsresult ScrollPixels (PRInt32 aDeltaX, PRInt32 aDeltaY);
 
 	nsresult Print ();
 	nsresult SetPrintPreviewMode (PRBool previewMode);
diff --git a/embed/mozilla/mozilla-embed.cpp b/embed/mozilla/mozilla-embed.cpp
index 17797f6e3..cbf728559 100644
--- a/embed/mozilla/mozilla-embed.cpp
+++ b/embed/mozilla/mozilla-embed.cpp
@@ -653,7 +653,8 @@ impl_get_zoom (EphyEmbed *embed)
 }
 
 static void
-impl_scroll (EphyEmbed *embed, int num_lines)
+impl_scroll_lines (EphyEmbed *embed,
+		   int num_lines)
 {
 	MozillaEmbedPrivate *mpriv = MOZILLA_EMBED(embed)->priv;
 
@@ -661,13 +662,24 @@ impl_scroll (EphyEmbed *embed, int num_lines)
 }
 
 static void
-impl_page_scroll (EphyEmbed *embed, int num_pages)
+impl_scroll_pages (EphyEmbed *embed,
+		   int num_pages)
 {
 	MozillaEmbedPrivate *mpriv = MOZILLA_EMBED(embed)->priv;
 
 	mpriv->browser->ScrollPages (num_pages);
 }
 
+static void
+impl_scroll_pixels (EphyEmbed *embed,
+		    int dx,
+		    int dy)
+{
+	MozillaEmbedPrivate *mpriv = MOZILLA_EMBED(embed)->priv;
+
+	mpriv->browser->ScrollPixels (dx, dy);
+}
+
 static int
 impl_shistory_n_items (EphyEmbed *embed)
 {
@@ -1197,8 +1209,9 @@ ephy_embed_iface_init (EphyEmbedIface *iface)
 	iface->reload = impl_reload;
 	iface->set_zoom = impl_set_zoom;
 	iface->get_zoom = impl_get_zoom;
-	iface->scroll = impl_scroll;
-	iface->page_scroll = impl_page_scroll;
+	iface->scroll_lines = impl_scroll_lines;
+	iface->scroll_pages = impl_scroll_pages;
+	iface->scroll_pixels = impl_scroll_pixels;
 	iface->shistory_n_items = impl_shistory_n_items;
 	iface->shistory_get_nth = impl_shistory_get_nth;
 	iface->shistory_get_pos = impl_shistory_get_pos;