Add SetOffset to PPB_Graphics2D_Dev

Add a SetOffset function to PPB_Graphics2D_Dev which allows the graphics context to be offset into the plugin element. This allows having a graphics context which is smaller than the plugin element and painting into only a portion of the plugin elements. This makes it possible to do viewporting for very large plugins.

R=piman@chromium.org, tsepez@chromium.org, yzshen@chromium.org

Review URL: https://codereview.chromium.org/25661002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235581 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 15 insertions, 1 deletions

diff --git a/ppapi/api/dev/ppb_graphics_2d_dev.idl b/ppapi/api/dev/ppb_graphics_2d_dev.idl
index 33b5f59..2924760 100644
--- a/ppapi/api/dev/ppb_graphics_2d_dev.idl
+++ b/ppapi/api/dev/ppb_graphics_2d_dev.idl
@@ -8,7 +8,8 @@
 [generate_thunk]
 
 label Chrome {
-  M22 = 0.1
+  M22 = 0.1,
+  M32 = 0.2
 };
 
 /* PPB_Graphics2D_Dev interface */
@@ -45,5 +46,18 @@ interface PPB_Graphics2D_Dev {
    */
   float_t GetScale(
       [in] PP_Resource resource);
+
+  /***
+   * Sets the offset into the plugin element at which the graphics context is
+   * painted. This allows a portion of the plugin element to be painted to.
+   * The new offset will only be applied after Flush() has been called.
+   *
+   * @param[in] resource A <code>Graphics2D</code> context resource.
+   * @param[in] offset The offset at which the context should be painted.
+   */
+  [version=0.2]
+  void SetOffset(
+      [in] PP_Resource resource,
+      [in] PP_Point offset);
 };