Clarify ideas a bit, DocumentRenderCallback service not needed

Change-Id: I0a91a45dace5d2a35daadf1c9233ab68bee8701e

touch/InternalUnoApi_touch.mk

@@ -25,7 +25,6 @@ $(eval $(call gb_InternalUnoApi_set_include,touch,\
 
 $(eval $(call gb_InternalUnoApi_add_idlfiles,touch,touch/idl/org/libreoffice/touch,\
 	Document \
-	DocumentRenderCallback \
 	XDocument \
 	XDocumentRenderCallback \
 ))

touch/idl/org/libreoffice/touch/DocumentRenderCallback.idl

-// -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
-
-// Copyright 2012 LibreOffice contributors.
-//
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-#ifndef org_libreoffice_touch_DocumentRenderCallback_idl
-#define org_libreoffice_touch_DocumentRenderCallback_idl
-
-#include <org/libreoffice/touch/XDocumentRenderCallback.idl>
-
-module org { module libreoffice { module touch {
-
-service DocumentRenderCallback: XDocumentRenderCallback
-{
-    create();
-};
-
-}; }; };
-
-#endif
-
-// vim:set shiftwidth=4 softtabstop=4 expandtab:

touch/idl/org/libreoffice/touch/XDocument.idl

@@ -37,10 +37,10 @@ interface XDocument: com::sun::star::uno::XInterface
     // on Android version and/or hardware? TBD. Will the same format be useful
     // also for iOS? TBD.
 
-    // buffer must have an exact number of bytes for a square number of
-    // pixels, At the UNO level buffer is represented as the address of its
-    // bytes, i.e. on Android it must be a "direct" ByteBuffer for that to be
-    // meaningful.
+    // buffer must have an exact number of bytes for a square with each side a
+    // power-of-two number of pixels, At this API level buffer is represented
+    // as the address of its bytes as a 64-bit integer, i.e. on Android it
+    // must be a "direct" ByteBuffer for that to be meaningful.
 
     // listener gets a "reasonable" number of callbacks during the rendering
     // if it takes "significantly" long, and can inerrupt the rendering.

touch/source/uno/Document.cxx

@@ -9,6 +9,7 @@
 
 // NOTE: Work in progress, most likely makes little sense
 
+#include <com/sun/star/awt/XBitmap.hpp>
 #include <com/sun/star/awt/XDevice.hpp>
 #include <com/sun/star/awt/XToolkit.hpp>
 #include <com/sun/star/beans/NamedValue.hpp>
@@ -40,10 +41,15 @@ private:
     uno::Reference< uno::XComponentContext > m_rContext;
     uno::Reference< lang::XComponent > m_xComponent;
     uno::Reference< frame::XController > m_xController;
+    uno::Reference< awt::XDevice > m_xDevice;
     uno::Reference< view::XRenderable > m_xRenderable;
 
     beans::PropertyValues m_aRenderProps;
 
+    // XRenderable.getRendererCount() and .render() need an XController in the
+    // properties, at least in the test Java code it seemed that a totally
+    // dummy one works, so try that here, too.
+
     typedef ::cppu::WeakImplHelper1< frame::XController > MyXController_Base;
 
     class MyXController:
@@ -160,9 +166,9 @@ protected:
 
             uno::Reference< awt::XToolkit > toolkit( m_rContext->getServiceManager()->createInstanceWithContext( "com.sun.star.awt.Toolkit", m_rContext ), uno::UNO_QUERY_THROW );
 
-            uno::Reference< awt::XDevice > device( toolkit->createScreenCompatibleDevice( 1024, 1024 ) );
+            m_xDevice = toolkit->createScreenCompatibleDevice( 1024, 1024 );
 
-            m_xRenderable = uno::Reference< view::XRenderable >(m_rContext->getServiceManager()->createInstanceWithContext( "com.sun.star.view.Renderable", m_rContext ), uno::UNO_QUERY_THROW );
+            m_xRenderable = uno::Reference< view::XRenderable >( m_rContext->getServiceManager()->createInstanceWithContext( "com.sun.star.view.Renderable", m_rContext ), uno::UNO_QUERY_THROW );
 
             m_xController = new MyXController();
 
@@ -170,7 +176,7 @@ protected:
             m_aRenderProps[0].Name = "IsPrinter";
             m_aRenderProps[0].Value <<= sal_Bool(true);
             m_aRenderProps[1].Name = "RenderDevice";
-            m_aRenderProps[1].Value <<= device;
+            m_aRenderProps[1].Value <<= m_xDevice;
             m_aRenderProps[2].Name = "View";
             m_aRenderProps[2].Value <<= m_xController;
         }
@@ -197,13 +203,20 @@ protected:
             sal_Int32 y )
         throw ( lang::IllegalArgumentException, uno::RuntimeException)
     {
+        uno::Any selection;
+
         (void) buffer;
         (void) bufferSize;
         (void) listener;
-        (void) pageNo;
         (void) zoomLevel;
         (void) x;
-        (void) y ;
+        (void) y;
+
+        selection <<= m_xComponent;
+
+        m_xRenderable->render( pageNo, selection, m_aRenderProps );
+
+        uno::Reference< awt::XBitmap> bitmap( m_xDevice->createBitmap( 0, 0, 1024, 1024 ) );
     }
 
 };