android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
| 150 +++++++++-
1 file changed, 147 insertions(+), 3 deletions(-)
New commits:
commit 24773530143c995820417fd004d227ff9472e51f
Author: Miklos Vajna <vmik...@suse.cz>
Date: Mon Jul 15 18:01:02 2013 +0200
LibreOffice4Android: render in a bit better quality
Change-Id: I65984af5e28c8a0250105b34c4bc7b1abf9ce3c7
diff --git
a/android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
b/android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
index df09708..d67d6e6 100644
---
a/android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
+++
b/android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
@@ -574,6 +574,7 @@ public class DocumentLoader
static final String TAG = "PAGE_VIEWER";
int width ;
int height;
+ double zoomFactor;
class PageLoadTask
extends AsyncTask<Integer, Void, Integer>
@@ -588,13 +589,19 @@ public class DocumentLoader
state = PageState.LOADING;
currentPageNumber = number;
- ByteBuffer bb = renderPage(currentPageNumber , params[1] ,
params[2]);//
- bm = Bitmap.createBitmap( width, height,
Bitmap.Config.ARGB_8888);
+ ByteBuffer bb = renderPage(currentPageNumber,
getZoomed(params[1]), getZoomed(params[2]));//
+ bm = Bitmap.createBitmap(getZoomed(width), getZoomed(height),
Bitmap.Config.ARGB_8888);
bm.copyPixelsFromBuffer(bb);
return currentPageNumber;
}
+ int getZoomed(int in)
+ {
+ double zoomed = in * zoomFactor;
+ return (int)zoomed;
+ }
+
protected void onPostExecute(Integer result)
{
Log.i(PageViewer.TAG, "onPostExecute: " + result);
@@ -651,6 +658,8 @@ public class DocumentLoader
return;
this.width = width ;
this.height = height;
+ // Render in a bit better quality, so it makes sense to zoom.
+ zoomFactor = Math.sqrt(2);
waitView = new TextView(DocumentLoader.this);
waitView.setTextSize(24);
waitView.setGravity(Gravity.CENTER);
commit 847fa448107574011745a530864ffd76b7531378
Author: Miklos Vajna <vmik...@suse.cz>
Date: Mon Jul 15 17:36:11 2013 +0200
LibreOffice4Android: support pinch zoom and dragging around while in zoom
Change-Id: Ic8e4cb30acff734e6860dfc9bb31e836d2ecd32d
diff --git
a/android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
b/android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
index 1373f37..df09708 100644
---
a/android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
+++
b/android/experimental/LibreOffice4Android/src/org/libreoffice/android/DocumentLoader.java
@@ -32,6 +32,7 @@ package org.libreoffice.android;
import org.libreoffice.R;
import android.app.Activity;
+import android.graphics.PointF;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.Color;
@@ -41,10 +42,12 @@ import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.AsyncTask;
import android.os.Bundle;
+import android.util.FloatMath;
import android.util.Log;
import android.view.GestureDetector;
import android.view.Gravity;
import android.view.MotionEvent;
+import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
@@ -52,6 +55,7 @@ import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
+import android.widget.ImageView.ScaleType;
import android.widget.ViewFlipper;
import android.widget.ViewSwitcher;
import android.view.MenuItem;
@@ -129,6 +133,7 @@ public class DocumentLoader
XRenderable renderable;
GestureDetector gestureDetector;
+ ScaleListener scaleDetector;
ViewGroup.LayoutParams matchParent;
@@ -149,15 +154,19 @@ public class DocumentLoader
float velocityY)
{
Log.i(TAG, "onFling: " + event1 + " " + event2);
+ if (scaleDetector.inZoom())
+ return false;
ViewFlipper flipper = documentViewer.getFlipper();
if (event1.getX() - event2.getX() > 120) {
if (((PageViewer)flipper.getCurrentView()).currentPageNumber
== pageCount-1)
return false;
+ scaleDetector.reset();
documentViewer.nextPage();
return true;
} else if (event2.getX() - event1.getX() > 120) {
if (((PageViewer)flipper.getCurrentView()).currentPageNumber
== 0)
return false;
+ scaleDetector.reset();
documentViewer.prevPage();
return true;
}
@@ -188,6 +197,127 @@ public class DocumentLoader
}
+ class ScaleListener implements OnTouchListener
+ {
+ public ScaleListener()
+ {
+ reset();
+ }
+
+ public boolean onTouch(View v, MotionEvent event)
+ {
+ PageViewer pageViewer = (PageViewer)v;
+ ImageView view = (ImageView)pageViewer.getCurrentView();
+ if (view.getScaleType() == ScaleType.FIT_CENTER)
+ {
+ origValues = new float[9];
+ view.getImageMatrix().getValues(origValues);
+ matrix.setValues(origValues);
+ view.setScaleType(ScaleType.MATRIX);
+ }
+
+ switch (event.getAction() & MotionEvent.ACTION_MASK)
+ {
+ case MotionEvent.ACTION_DOWN:
+ if (inZoom())
+ {
+ savedMatrix.set(matrix);
+ start.set(event.getX(), event.getY());
+ mode = DRAG;
+ }
+ break;
+ case MotionEvent.ACTION_POINTER_DOWN:
+ oldDist = spacing(event);
+ if (oldDist > 10f) {
+ savedMatrix.set(matrix);
+ midPoint(mid, event);
+ mode = ZOOM;
+ }
+ break;
+ case MotionEvent.ACTION_UP:
+ case MotionEvent.ACTION_POINTER_UP:
+ mode = NONE;
+ float[] values = new float[9];
+ view.getImageMatrix().getValues(values);
+ currentScaleX = values[Matrix.MSCALE_X];
+ currentScaleY = values[Matrix.MSCALE_Y];
+ if (currentScaleX < origValues[Matrix.MSCALE_X])
+ matrix.setValues(origValues);
+ break;
+ case MotionEvent.ACTION_MOVE:
+ if (mode == DRAG) {
+ matrix.set(savedMatrix);
+ matrix.postTranslate(event.getX() - start.x, -1 *
(event.getY() - start.y));
+ }
+ else if (mode == ZOOM) {
+ float newDist = spacing(event);
+ if (newDist > 10f) {
+ matrix.set(savedMatrix);
+ float scale = newDist / oldDist;
+ matrix.postScale(scale, scale, mid.x, mid.y);
+ }
+ }
+ break;
+ }
+
+ view.setImageMatrix(matrix);
+ return true;
+ }
+
+ private float spacing(MotionEvent event)
+ {
+ float x = event.getX(0) - event.getX(1);
+ float y = event.getY(0) - event.getY(1);
+ return FloatMath.sqrt(x * x + y * y);
+ }
+
+ private void midPoint(PointF point, MotionEvent event)
+ {
+ float x = event.getX(0) + event.getX(1);
+ float y = event.getY(0) + event.getY(1);
+ point.set(x / 2, y / 2);
+ }
+
+ public void reset()
+ {
+ if (documentViewer != null)
+ {
+ PageViewer pageViewer =
(PageViewer)documentViewer.viewFlipper.getCurrentView();
+
((ImageView)pageViewer.getCurrentView()).setScaleType(ScaleType.FIT_CENTER);
+ }
+ matrix = new Matrix();
+ savedMatrix = new Matrix();
+ mode = NONE;
+ start = new PointF();
+ mid = new PointF();
+ oldDist = 1f;
+ origValues = null;
+ currentScaleX = 0;
+ currentScaleY = 0;
+ }
+
+ public boolean inZoom()
+ {
+ return origValues != null && origValues[Matrix.MSCALE_X] <
currentScaleX;
+ }
+
+ Matrix matrix; // Matrix of the current view
+ Matrix savedMatrix; // Matrix when the user started the touch.
+
+ static final int NONE = 0;
+ static final int DRAG = 1;
+ static final int ZOOM = 2;
+ int mode;
+
+ PointF start;
+ PointF mid;
+ float oldDist;
+
+ float[] origValues;
+ float currentScaleX;
+ float currentScaleY;
+ }
+
class MyXController
implements XController
{
@@ -950,6 +1080,7 @@ public class DocumentLoader
extras = getIntent().getExtras();
gestureDetector = new GestureDetector(this, new GestureListener());
+ scaleDetector = new ScaleListener();
try {
long t0 = System.currentTimeMillis();
@@ -1092,7 +1223,11 @@ public class DocumentLoader
@Override
public boolean onTouchEvent(MotionEvent event)
{
- return gestureDetector.onTouchEvent(event);
+ if (gestureDetector.onTouchEvent(event))
+ return true;
+ if (scaleDetector.onTouch(documentViewer.viewFlipper.getCurrentView(),
event))
+ return true;
+ return false;
}
@Override
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