mir/libreoffice
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

First draft of "navigator", a strip of "live" thumbnails which are clickable.

Browse Source 
Open method to open random page, not first.
Put some UI set up in documentLoadTask as the UI requires the number of pages in the document which is only know on load.
This commit is contained in:
Iain Billett
2012-06-28 19:36:29 +01:00
parent 797df2912a
commit 06b935baa5
2 changed files with 116 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
android/experimental/LibreOffice4Android/res/layout/document_viewer.xml
View File

@@ -13,11 +13,13 @@
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="@id/page_flipper"
android:scrollbarAlwaysDrawHorizontalTrack="true"
android:background="#aa000000">
<LinearLayout
android:id="@+id/navigator"
android:layout_width="wrap_content"
android:layout_height="150dp"
android:layout_height="120dp"
android:layout_margin="15dp"
android:orientation="horizontal">
</LinearLayout>
</HorizontalScrollView >

137
android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
View File

@@ -95,7 +95,7 @@ public class DocumentLoader
extends Activity
{
private static final String TAG = "DocumentLoader";
// Size of a small virtual (bitmap) device used to find out page count and
// page sizes
private static final int SMALLSIZE = 128;
@@ -152,7 +152,7 @@ public class DocumentLoader
flipper.setOutAnimation(outToLeft);
flipper.showNext();
((PageViewer)flipper.getChildAt((flipper.getDisplayedChild() + PAGECACHE_PLUSMINUS) % PAGECACHE_SIZE)).display(((PageViewer)flipper.getCurrentView()).currentPageNumber + PAGECACHE_PLUSMINUS);
return true;
} else if (event2.getX() - event1.getX() > 120) {
@@ -523,7 +523,13 @@ public class DocumentLoader
View thumbnailView;
//PageState state = PageState.NONEXISTENT;
Bitmap bm;
final float scale;
final int widthInPx;
final int heightInPx;
final int defaultWidthPx = 120;
final int defaultHeightPx = 120;
final int thumbnailPaddingDp = 10;
class ThumbLoadTask
extends AsyncTask<Integer, Void, Integer>
{
@@ -535,8 +541,8 @@ public class DocumentLoader
return -1;
//state = PageState.LOADING;
ByteBuffer bb = renderPage( number , 120 , 120);
bm = Bitmap.createBitmap( 120 , 120 , Bitmap.Config.ARGB_8888);
ByteBuffer bb = renderPage( number , widthInPx , heightInPx);
bm = Bitmap.createBitmap( widthInPx , heightInPx , Bitmap.Config.ARGB_8888);
bm.copyPixelsFromBuffer(bb);
return number;
@@ -552,7 +558,8 @@ public class DocumentLoader
ImageView thumbImage = new ImageView(DocumentLoader.this);//(ImageView)findViewById( R.id.thumbnail );
thumbImage.setImageBitmap(bm);
int paddingPx = (int) (thumbnailPaddingDp* scale + 0.5f);
thumbImage.setPadding( paddingPx , 0 , paddingPx , 0 );
thumbImage.setScaleY(-1);
Log.i( TAG, Integer.toString( thumbImage.getWidth() ) );
@@ -570,15 +577,31 @@ public class DocumentLoader
if (number >= 0)
waitView.setText("Page " + (number+1) + ", wait...");
//state = PageState.NONEXISTENT;
if (number >= 0) {
new ThumbLoadTask().executeOnExecutor(AsyncTask.SERIAL_EXECUTOR, number);
}
}
ThumbnailView(int number , int widthInDp , int heightInDp)
{
super(DocumentLoader.this);
scale = getContext().getResources().getDisplayMetrics().density;
widthInPx = (int) (widthInDp * scale + 0.5f);
heightInPx = (int) (heightInDp* scale + 0.5f);
waitView = new TextView( DocumentLoader.this );
thumbnailView = inflater.inflate( R.layout.navigation_grid_item , null);
display(number);
}
ThumbnailView(int number)
{
super(DocumentLoader.this);
scale = getContext().getResources().getDisplayMetrics().density;
widthInPx = defaultWidthPx;
heightInPx = defaultHeightPx;
waitView = new TextView( DocumentLoader.this );
thumbnailView = inflater.inflate( R.layout.navigation_grid_item , null);
@@ -589,9 +612,21 @@ public class DocumentLoader
}
class DocumentLoadTask
extends AsyncTask<String, Void, Void>
extends AsyncTask<String, Void, Integer>
{
protected Void doInBackground(String... params)
protected void onPreExecute (){
TextView waitView = new TextView(DocumentLoader.this);
waitView.setTextSize(24);
waitView.setGravity(Gravity.CENTER);
waitView.setBackgroundColor(Color.WHITE);
waitView.setTextColor(Color.BLACK);
waitView.setText("Page " + (1) + ", wait...");
flipper = new ViewFlipper(DocumentLoader.this);
flipper = (ViewFlipper)findViewById( R.id.page_flipper );
matchParent = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
flipper.addView( waitView , 0 , matchParent);
}
protected Integer doInBackground(String... params)
{
try {
String url = params[0];
@@ -645,7 +680,46 @@ public class DocumentLoader
e.printStackTrace(System.err);
finish();
}
return null;
return new Integer( pageCount );
}
protected void onPostExecute(Integer result){
Log.i(TAG, "onPostExecute: " + result);
if (result == -1)
return;
//flipper = new ViewFlipper(this);
flipper = (ViewFlipper)findViewById( R.id.page_flipper );
matchParent = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
flipper.removeViewAt( 0 );
//Should check that pages exist ie >=0 && < pageCount
flipper.addView(new PageViewer(0), 0, matchParent);
for (int i = 0; i < PAGECACHE_PLUSMINUS; i++)
flipper.addView(new PageViewer(i+1), i+1, matchParent);
for (int i = 0; i < PAGECACHE_PLUSMINUS; i++)
flipper.addView(new PageViewer(-1), PAGECACHE_PLUSMINUS + i+1, matchParent);
ll = (LinearLayout)findViewById( R.id.navigator);
inflater = (LayoutInflater) getApplicationContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
for( int i = 0; i < result.intValue() ; i++ ){
ThumbnailView thumb = new ThumbnailView( i , (int)(120.0f / Math.sqrt(2) ) , 120 );
final int pos = i;
thumb.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Log.d("nav" , Integer.toString( pos ) );
openPageWithPrefetching( pos );
}
});
ll.addView ( thumb );
}
}
}
@@ -771,14 +845,18 @@ public class DocumentLoader
Log.i(TAG, "componentLoader is" + (componentLoader!=null ? " not" : "") + " null");
setContentView( R.layout.document_viewer );
// Load the wanted document
new DocumentLoadTask().executeOnExecutor(AsyncTask.SERIAL_EXECUTOR, "file://" + input);
setContentView( R.layout.document_viewer );
/*
//flipper = new ViewFlipper(this);
flipper = (ViewFlipper)findViewById( R.id.page_flipper );
matchParent = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
// should have document load task publish pageCount before this happens: Shouldn't try to pre-fetch
// non-existant pages && need to know how many navigation thumbnails to render.
// Should put these on anothe serial executor?
flipper.addView(new PageViewer(0), 0, matchParent);
for (int i = 0; i < PAGECACHE_PLUSMINUS; i++)
flipper.addView(new PageViewer(i+1), i+1, matchParent);
@@ -788,20 +866,11 @@ public class DocumentLoader
ll = (LinearLayout)findViewById( R.id.navigator);
inflater = (LayoutInflater) getApplicationContext().getSystemService(
Context.LAYOUT_INFLATER_SERVICE);
//ThumbnailView pv = new ThumbnailView(0);
/*Bitmap thumbnailBitmap = Bitmap.createBitmap(120, 120, Bitmap.Config.ARGB_8888);
thumbnailBitmap.copyPixelsFromBuffer(bb);
ImageView pageImage = (ImageView)findViewById( R.id.thumbnail );
pageImage.setImageBitmap( thumbnailBitmap );
*/
for( int i = 0; i < 2 ; i++ ){
View thumbnailView = inflater.inflate( R.layout.navigation_grid_item , null );
ThumbnailView thumb = new ThumbnailView( i );
ThumbnailView thumb = new ThumbnailView( i , (int)(120.0f / Math.sqrt(2) ) , 120 );
final int pos = i;
thumb.setOnClickListener(new OnClickListener() {
@@ -809,11 +878,11 @@ public class DocumentLoader
public void onClick(View v) {
// TODO Auto-generated method stub
Log.d("nav" , Integer.toString( pos ) );
//(PageViewer)flipper.getChildAt( (flipper.getDisplayedChild() + PAGECACHE_PLUSMINUS) % PAGECACHE_SIZE)).display( ( (PageViewer)flipper.getCurrentView() ).currentPageNumber + PAGECACHE_PLUSMINUS);
}
});
ll.addView ( thumb );
}
}*/
}
@@ -843,6 +912,26 @@ public class DocumentLoader
return super.onOptionsItemSelected(item);
}
}
/* if page is more than 2*+- away then no cache over lap
* load page && fill cache
* if page is */
public void openPageWithPrefetching( int number ){
//as a first draft clear an refill "cache" on load.
//should move views where "cache window" overlaps
flipper.removeAllViews();
flipper.addView(new PageViewer(number), 0, matchParent);
for (int i = 0; i < PAGECACHE_PLUSMINUS; i++){
if( number + i+1 >= 0 && number + i+1 < pageCount){//pageCount will always be correctly defined when this is called (famous last words)
flipper.addView(new PageViewer( number + i+1), i+1, matchParent);
}
}
for (int i = 0; i < PAGECACHE_PLUSMINUS; i++){
if( number + i+1 >= 0 && number + i+1 < pageCount){
flipper.addView(new PageViewer( number - (i+1)), PAGECACHE_PLUSMINUS + i+1, matchParent);
}
}
}
}
// vim:set shiftwidth=4 softtabstop=4 expandtab: