Added debug option for viewport height

app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java

@@ -211,6 +211,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
     private SwitchCompat swUndoManager;
     private SwitchCompat swBrowserZoom;
     private SwitchCompat swFakeDark;
+    private EditText etViewportHeight;
     private SwitchCompat swShowRecent;
     private SwitchCompat swModSeq;
     private SwitchCompat swPreamble;
@@ -458,6 +459,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         swUndoManager = view.findViewById(R.id.swUndoManager);
         swBrowserZoom = view.findViewById(R.id.swBrowserZoom);
         swFakeDark = view.findViewById(R.id.swFakeDark);
+        etViewportHeight = view.findViewById(R.id.etViewportHeight);
         swShowRecent = view.findViewById(R.id.swShowRecent);
         swModSeq = view.findViewById(R.id.swModSeq);
         swPreamble = view.findViewById(R.id.swPreamble);
@@ -1611,6 +1613,27 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             }
         });
 
+        etViewportHeight.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
+
+            }
+
+            @Override
+            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
+
+            }
+
+            @Override
+            public void afterTextChanged(Editable edit) {
+                try {
+                    prefs.edit().putInt("viewport_height", Integer.parseInt(edit.toString())).apply();
+                } catch (Throwable ex) {
+                    Log.e(ex);
+                }
+            }
+        });
+
         swShowRecent.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
@@ -2273,7 +2296,8 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
                 "send_host".equals(key) ||
                 "openai_uri".equals(key) ||
                 "openai_apikey".equals(key) ||
-                "openai_model".equals(key))
+                "openai_model".equals(key) ||
+                "viewport_height".equals(key))
             return;
 
         if ("global_keywords".equals(key))
@@ -2524,6 +2548,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             swUndoManager.setChecked(prefs.getBoolean("undo_manager", false));
             swBrowserZoom.setChecked(prefs.getBoolean("browser_zoom", false));
             swFakeDark.setChecked(prefs.getBoolean("fake_dark", false));
+            etViewportHeight.setText(Integer.toString(prefs.getInt("viewport_height", 16000)));
             swShowRecent.setChecked(prefs.getBoolean("show_recent", false));
             swModSeq.setChecked(prefs.getBoolean("use_modseq", true));
             swPreamble.setChecked(prefs.getBoolean("preamble", false));

app/src/main/java/eu/faircode/email/WebViewEx.java

@@ -48,6 +48,7 @@ import java.util.Objects;
 public class WebViewEx extends WebView implements DownloadListener, View.OnLongClickListener {
     private int height;
     private int maxHeight;
+    private int viewportHeight;
     private IWebView intf;
     private Runnable onPageLoaded;
     private String hash;
@@ -61,6 +62,7 @@ public class WebViewEx extends WebView implements DownloadListener, View.OnLongC
         super(context);
 
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        this.viewportHeight = prefs.getInt("viewport_height", 16000);
         boolean overview_mode = prefs.getBoolean("overview_mode", false);
         boolean safe_browsing = prefs.getBoolean("safe_browsing", false);
 
@@ -91,7 +93,9 @@ public class WebViewEx extends WebView implements DownloadListener, View.OnLongC
     }
 
     void init(int height, int maxHeight, float size, Pair<Integer, Integer> position, boolean force_light, IWebView intf) {
-        Log.i("Init height=" + height + "/" + maxHeight + " size=" + size + " accelerated=" + isHardwareAccelerated());
+        Log.i("Init height=" + height + "/" + maxHeight + " size=" + size +
+                " viewport=" + viewportHeight +
+                " accelerated=" + isHardwareAccelerated());
 
         if (maxHeight == 0) {
             Log.e("WebView max height zero");
@@ -249,7 +253,7 @@ public class WebViewEx extends WebView implements DownloadListener, View.OnLongC
     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         // Unable to create layer for WebViewEx, size 1088x16384 max size 16383 color type 4 has context 1)
-        int limitHeight = MeasureSpec.makeMeasureSpec(16000, MeasureSpec.AT_MOST);
+        int limitHeight = MeasureSpec.makeMeasureSpec(viewportHeight, MeasureSpec.AT_MOST);
         super.onMeasure(widthMeasureSpec, limitHeight);
 
         int mh = getMeasuredHeight();

app/src/main/res/layout/fragment_options_misc.xml

@@ -1687,6 +1687,29 @@
                     app:layout_constraintTop_toBottomOf="@id/swBrowserZoom"
                     app:switchPadding="12dp" />
 
+                <TextView
+                    android:id="@+id/tvViewportHeight"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:layout_marginEnd="48dp"
+                    android:text="@string/title_advanced_viewport_height"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    android:textColor="?android:attr/textColorPrimary"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/swFakeDark" />
+
+                <EditText
+                    android:id="@+id/etViewportHeight"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:inputType="number"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/tvViewportHeight" />
+
                 <androidx.appcompat.widget.SwitchCompat
                     android:id="@+id/swShowRecent"
                     android:layout_width="0dp"
@@ -1696,7 +1719,7 @@
                     android:text="@string/title_advanced_show_recent"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/swFakeDark"
+                    app:layout_constraintTop_toBottomOf="@id/etViewportHeight"
                     app:switchPadding="12dp" />
 
                 <androidx.appcompat.widget.SwitchCompat

app/src/main/res/values/strings.xml

@@ -862,6 +862,7 @@
     <string name="title_advanced_undo_manager" translatable="false">Use Android\'s undo manager</string>
     <string name="title_advanced_browser_zoom" translatable="false">Use browser zoom</string>
     <string name="title_advanced_fake_dark" translatable="false">Fake dark</string>
+    <string name="title_advanced_viewport_height" translatable="false">Viewport height</string>
     <string name="title_advanced_show_recent" translatable="false">Show recent flag</string>
     <string name="title_advanced_modseq" translatable="false">MODSEQ</string>
     <string name="title_advanced_preamble" translatable="false">Preamble</string>