Added PDF Export option on Android Viewer

Change-Id: I89d0ca239e3a713979f84a77a66d6da95aad234d
Signed-off-by: Mert Tumer <merttumer@outlook.com>
Reviewed-on: https://gerrit.libreoffice.org/58826
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

android/source/res/menu/main.xml

@@ -36,6 +36,12 @@
             android:title="@string/action_save"
             android:orderInCategory="100" />
 
+        <item android:id="@+id/action_exportToPDF"
+            android:title="@string/action_exportToPDF"
+            android:orderInCategory="100"
+            android:visible="true"
+            />
+
         <item android:id="@+id/action_UNO_commands"
             android:title="@string/action_UNO_commands"
             android:orderInCategory="100" />

android/source/res/values/strings.xml

@@ -209,5 +209,5 @@
     <string name="UNO_commands_string_type_hint">Type</string>
     <string name="UNO_commands_string_value_hint">Value</string>
     <string name="UNO_commands_string_parent_value_hint">Parent Value</string>
-
+    <string name="action_exportToPDF">Export To PDF</string>
 </resources>

android/source/src/java/org/libreoffice/LOKitTileProvider.java

@@ -10,6 +10,7 @@ package org.libreoffice;
 
 import android.graphics.Bitmap;
 import android.graphics.PointF;
+import android.os.Environment;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.widget.Toast;
@@ -301,7 +302,7 @@ class LOKitTileProvider implements TileProvider {
 
 
     @Override
-    public void saveDocumentAs(String filePath, String format) {
+    public void saveDocumentAs(final String filePath, String format) {
         final String newFilePath = "file://" + filePath;
         Log.d("saveFilePathURL", newFilePath);
         LOKitShell.showProgressSpinner(mContext);
@@ -311,7 +312,16 @@ class LOKitTileProvider implements TileProvider {
             if (format.equals("svg")) {
                 // error in creating temp slideshow svg file
                 Log.d(LOGTAG, "Error in creating temp slideshow svg file");
-            } else {
+            } else if(format.equals("pdf")){
+                Log.d(LOGTAG, "Error in creating pdf file");
+                LOKitShell.getMainHandler().post(new Runnable() {
+                    @Override
+                    public void run() {
+                        // There was some error
+                        mContext.showCustomStatusMessage("Unable to export to pdf");
+                    }
+                });
+            }else {
                 LOKitShell.getMainHandler().post(new Runnable() {
                     @Override
                     public void run() {
@@ -329,6 +339,14 @@ class LOKitTileProvider implements TileProvider {
                         mContext.startPresentation(newFilePath);
                     }
                 });
+            }else if(format.equals("pdf")){
+                LOKitShell.getMainHandler().post(new Runnable() {
+                    @Override
+                    public void run() {
+                        // There was no error
+                        mContext.showCustomStatusMessage("Exported to PDF at "+filePath);
+                    }
+                });
             } else {
                 LOKitShell.getMainHandler().post(new Runnable() {
                     @Override
@@ -342,6 +360,23 @@ class LOKitTileProvider implements TileProvider {
         LOKitShell.hideProgressSpinner(mContext);
     }
 
+    public void exportToPDF(boolean print){
+        String dir = Environment.getExternalStorageDirectory().getAbsolutePath()+"/Documents";
+        File docDir = new File(dir);
+        if(!docDir.exists()){
+            docDir.mkdir();
+        }
+        String mInputFileName = (new File(mInputFile)).getName();
+        String file = mInputFileName.substring(0,(mInputFileName.length()-3))+"pdf";
+        if(print){
+            String cacheFile = mContext.getExternalCacheDir().getAbsolutePath()
+                    + "/" + file;
+            mDocument.saveAs("file://"+cacheFile,"pdf","");
+            //TODO PRINT
+        }else{
+            saveDocumentAs(dir+"/"+file,"pdf");
+        }
+    }
     public boolean isDocumentCached(){
         File input = new File(mInputFile);
         final String cacheFile = mContext.getExternalCacheDir().getAbsolutePath() + "/lo_cached_" + input.getName();

android/source/src/java/org/libreoffice/LibreOfficeMainActivity.java

@@ -927,6 +927,10 @@ public class LibreOfficeMainActivity extends AppCompatActivity implements Settin
         else
             Snackbar.make(mDrawerLayout, getString(R.string.create_new_file_error) + mInputFile.getName(), Snackbar.LENGTH_LONG).show();    }
 
+    public void showCustomStatusMessage(String message){
+        Snackbar.make(mDrawerLayout, message, Snackbar.LENGTH_LONG).show();
+    }
+
     public void preparePresentation() {
         if (getExternalCacheDir() != null) {
             String tempPath = getExternalCacheDir().getPath() + "/" + mInputFile.getName() + ".svg";

android/source/src/java/org/libreoffice/ToolbarController.java

@@ -171,6 +171,9 @@ public class ToolbarController implements Toolbar.OnMenuItemClickListener {
             case R.id.action_parts:
                 mContext.openDrawer();
                 return true;
+            case R.id.action_exportToPDF:
+                mContext.getTileProvider().exportToPDF(false);
+                return true;
             case R.id.action_settings:
                 mContext.showSettings();
                 return true;