LOK: add Document::getTileMode()

So that clients can know if they get old-style RGBA or new-style ARGB
output in paintTile().

Change-Id: Icfde4b3259444b3524e64478ccd976664a3fe0ed
(cherry picked from commit fc06f801ee79fd49d54c27121ae9b2904d99f09c)

3 files changed, 20 insertions, 0 deletions

diff --git a/include/LibreOfficeKit/LibreOfficeKit.h b/include/LibreOfficeKit/LibreOfficeKit.h
index 93f7dca6d455..5189cca5eb5e 100644
--- a/include/LibreOfficeKit/LibreOfficeKit.h
+++ b/include/LibreOfficeKit/LibreOfficeKit.h
@@ -118,6 +118,9 @@ struct _LibreOfficeKitDocumentClass
                        const int nTileWidth,
                        const int nTileHeight);
 
+    /// @see lok::Document::getTileMode().
+    int (*getTileMode) (LibreOfficeKitDocument* pThis);
+
     /// @see lok::Document::getDocumentSize().
     void (*getDocumentSize) (LibreOfficeKitDocument* pThis,
                              long* pWidth,
diff --git a/include/LibreOfficeKit/LibreOfficeKit.hxx b/include/LibreOfficeKit/LibreOfficeKit.hxx
index 0eeb5be424a5..f907f709ee4d 100644
--- a/include/LibreOfficeKit/LibreOfficeKit.hxx
+++ b/include/LibreOfficeKit/LibreOfficeKit.hxx
@@ -140,6 +140,16 @@ public:
                                 nTilePosX, nTilePosY, nTileWidth, nTileHeight);
     }
 
+    /**
+     * Gets the tile mode: the pixel format used for the pBuffer of paintTile().
+     *
+     * @return an element of the LibreOfficeKitTileMode enum.
+     */
+    inline int getTileMode()
+    {
+        return mpDoc->pClass->getTileMode(mpDoc);
+    }
+
     /// Get the document sizes in TWIPs.
     inline void getDocumentSize(long* pWidth, long* pHeight)
     {
diff --git a/include/LibreOfficeKit/LibreOfficeKitEnums.h b/include/LibreOfficeKit/LibreOfficeKitEnums.h
index 7b23fcbab1c3..b713f0ed49b7 100644
--- a/include/LibreOfficeKit/LibreOfficeKitEnums.h
+++ b/include/LibreOfficeKit/LibreOfficeKitEnums.h
@@ -35,6 +35,13 @@ LibreOfficeKitPartMode;
 
 typedef enum
 {
+    LOK_TILEMODE_RGBA,
+    LOK_TILEMODE_ARGB
+}
+LibreOfficeKitTileMode;
+
+typedef enum
+{
     /**
      * Any tiles which are over the rectangle described in the payload are no
      * longer valid.