diff options
Diffstat (limited to 'android/source/src/java/org/libreoffice/PresentationActivity.java')
| -rw-r--r-- | android/source/src/java/org/libreoffice/PresentationActivity.java | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/android/source/src/java/org/libreoffice/PresentationActivity.java b/android/source/src/java/org/libreoffice/PresentationActivity.java new file mode 100644 index 000000000000..1eea5e3836fb --- /dev/null +++ b/android/source/src/java/org/libreoffice/PresentationActivity.java @@ -0,0 +1,188 @@ +package org.libreoffice; + +import android.content.Intent; +import android.os.Build; +import android.os.Bundle; +import android.support.annotation.Nullable; +import android.support.v4.view.GestureDetectorCompat; +import android.support.v7.app.AppCompatActivity; +import android.view.GestureDetector; +import android.view.KeyEvent; +import android.view.MotionEvent; +import android.view.View; +import android.view.WindowManager; +import android.webkit.WebView; +import android.widget.Button; +import android.widget.ImageButton; + +public class PresentationActivity extends AppCompatActivity { + + private static final String LOGTAG = PresentationActivity.class.getSimpleName(); + WebView mWebView; + View mGestureView; + + @Override + protected void onCreate(@Nullable Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + + // First we hide the status bar + if (Build.VERSION.SDK_INT < 16) { + // If the Android version is lower than Jellybean, use this call to hide + // the status bar. + getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, + WindowManager.LayoutParams.FLAG_FULLSCREEN); + } else { + // If higher than Jellybean + View decorView = getWindow().getDecorView(); + // Hide the status bar. + int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN; + decorView.setSystemUiVisibility(uiOptions); + } + + setContentView(R.layout.presentation_mode); + + // get intent and url + Intent intent = getIntent(); + String filePath = intent.getDataString(); + + // set up WebView + mWebView = (WebView) findViewById(R.id.presentation_view); + mWebView.getSettings().setJavaScriptEnabled(true); + mWebView.setOnTouchListener(new View.OnTouchListener() { + @Override + public boolean onTouch(View v, MotionEvent event) { + return true; + } + }); + + // set up buttons within presentation_gesture_view + ImageButton prevButton = (ImageButton) findViewById(R.id.slide_show_nav_prev); + ImageButton nextButton = (ImageButton) findViewById(R.id.slide_show_nav_next); + Button backButton = (Button) findViewById(R.id.slide_show_nav_back); + + prevButton.setOnClickListener(new View.OnClickListener() { + @Override + public void onClick(View v) { + pageLeft(); + } + }); + nextButton.setOnClickListener(new View.OnClickListener() { + @Override + public void onClick(View v) { + pageRight(); + } + }); + backButton.setOnClickListener(new View.OnClickListener() { + @Override + public void onClick(View v) { + onBackPressed(); + } + }); + + // set up presentation_gesture_view + mGestureView = findViewById(R.id.presentation_gesture_view); + final GestureDetectorCompat gestureDetector = + new GestureDetectorCompat(this, new presentationGestureViewListener()); + mGestureView.setOnTouchListener(new View.OnTouchListener() { + @Override + public boolean onTouch(View v, MotionEvent event) { + return gestureDetector.onTouchEvent(event); + } + }); + + // load url + mWebView.loadUrl(filePath); + } + + private class presentationGestureViewListener extends GestureDetector.SimpleOnGestureListener { + private static final int SWIPE_VELOCITY_THRESHOLD = 100; + private static final int SCROLL_THRESHOLD = 10; // if scrollCounter is larger than this, a page switch is triggered + private int scrollCounter = 0; // a counter for measuring scrolling distance + + @Override + public boolean onDown(MotionEvent e) { + return true; + } + + @Override + public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { + boolean result = false; + try { + float diffY = e2.getY() - e1.getY(); + float diffX = e2.getX() - e1.getX(); + if (Math.abs(diffX) > Math.abs(diffY)) { + if (Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) { + if (diffX > 0) { + pageRight(); + } else { + pageLeft(); + } + result = true; + } + } + } catch (Exception exception) { + exception.printStackTrace(); + } + return result; + } + + @Override + public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { + boolean result = false; + try { + float diffY = e2.getY() - e1.getY(); + float diffX = e2.getX() - e1.getX(); + if (Math.abs(diffX) < Math.abs(diffY)) { + if (distanceY > 0) { + scrollCounter++; + if (scrollCounter >= SCROLL_THRESHOLD) { + pageRight(); + scrollCounter = 0; + } + } else { + scrollCounter--; + if (scrollCounter <= -SCROLL_THRESHOLD) { + pageLeft(); + scrollCounter = 0; + } + } + result = true; + } + } catch (Exception exception) { + exception.printStackTrace(); + } + return result; + } + + @Override + public boolean onSingleTapUp(MotionEvent e) { + if (e.getX() < mGestureView.getWidth()/3) { + pageLeft(); + } else if (e.getX() < mGestureView.getWidth()*2/3) { + hideControlButtons(); + } else { + pageRight(); + } + return true; + } + } + + private void hideControlButtons() { + View[] views= {findViewById(R.id.slide_show_nav_prev),findViewById(R.id.slide_show_nav_next),findViewById(R.id.slide_show_nav_back)} ; + for (View view : views) { + if (view.getVisibility() == View.GONE) { + view.setVisibility(View.VISIBLE); + } else if (view.getVisibility() == View.VISIBLE) { + view.setVisibility(View.GONE); + } + } + } + + private void pageLeft() { + mWebView.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_LEFT)); + } + + private void pageRight() { + mWebView.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_RIGHT)); + } +}
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