Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 177 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 000000000..ede7c0c40
--- /dev/null
+++ b/android/source/src/java/org/libreoffice/PresentationActivity.java
@@ -0,0 +1,177 @@
+package org.libreoffice;
+
+import android.content.Intent;
+import android.os.Bundle;
+import androidx.annotation.Nullable;
+import androidx.core.view.GestureDetectorCompat;
+import androidx.appcompat.app.AppCompatActivity;
+import android.view.GestureDetector;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.View;
+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);
+
+        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 = 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 = findViewById(R.id.slide_show_nav_prev);
+        ImageButton nextButton = findViewById(R.id.slide_show_nav_next);
+        Button backButton = 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));
+    }
+}