Added collapsing feed info

2 files changed, 124 insertions, 0 deletions

diff --git a/app/src/main/java/de/danoeh/antennapod/view/NestedScrollingListView.java b/app/src/main/java/de/danoeh/antennapod/view/NestedScrollingListView.java
new file mode 100644
index 000000000..e7a6eefc2
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/view/NestedScrollingListView.java
@@ -0,0 +1,74 @@
+package de.danoeh.antennapod.view;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.ListView;
+import androidx.core.view.NestedScrollingChild;
+import androidx.core.view.NestedScrollingChildHelper;
+
+/**
+ * ListView that can be wrapped in NestedScrollView
+ * Based on https://stackoverflow.com/a/34920961.
+ */
+public class NestedScrollingListView extends ListView implements NestedScrollingChild {
+    private final NestedScrollingChildHelper nestedScrollingChildHelper;
+
+    public NestedScrollingListView(Context context) {
+        super(context);
+        nestedScrollingChildHelper = new NestedScrollingChildHelper(this);
+        setNestedScrollingEnabled(true);
+    }
+
+    public NestedScrollingListView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        nestedScrollingChildHelper = new NestedScrollingChildHelper(this);
+        setNestedScrollingEnabled(true);
+    }
+
+    @Override
+    public void setNestedScrollingEnabled(boolean enabled) {
+        nestedScrollingChildHelper.setNestedScrollingEnabled(enabled);
+    }
+
+    @Override
+    public boolean isNestedScrollingEnabled() {
+        return nestedScrollingChildHelper.isNestedScrollingEnabled();
+    }
+
+    @Override
+    public boolean startNestedScroll(int axes) {
+        return nestedScrollingChildHelper.startNestedScroll(axes);
+    }
+
+    @Override
+    public void stopNestedScroll() {
+        nestedScrollingChildHelper.stopNestedScroll();
+    }
+
+    @Override
+    public boolean hasNestedScrollingParent() {
+        return nestedScrollingChildHelper.hasNestedScrollingParent();
+    }
+
+    @Override
+    public boolean dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed,
+                                        int dyUnconsumed, int[] offsetInWindow) {
+        return nestedScrollingChildHelper.dispatchNestedScroll(dxConsumed, dyConsumed,
+                dxUnconsumed, dyUnconsumed, offsetInWindow);
+    }
+
+    @Override
+    public boolean dispatchNestedPreScroll(int dx, int dy, int[] consumed, int[] offsetInWindow) {
+        return nestedScrollingChildHelper.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow);
+    }
+
+    @Override
+    public boolean dispatchNestedFling(float velocityX, float velocityY, boolean consumed) {
+        return nestedScrollingChildHelper.dispatchNestedFling(velocityX, velocityY, consumed);
+    }
+
+    @Override
+    public boolean dispatchNestedPreFling(float velocityX, float velocityY) {
+        return nestedScrollingChildHelper.dispatchNestedPreFling(velocityX, velocityY);
+    }
+}
diff --git a/app/src/main/java/de/danoeh/antennapod/view/ToolbarIconTintManager.java b/app/src/main/java/de/danoeh/antennapod/view/ToolbarIconTintManager.java
new file mode 100644
index 000000000..22d83301c
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/view/ToolbarIconTintManager.java
@@ -0,0 +1,50 @@
+package de.danoeh.antennapod.view;
+
+import android.content.Context;
+import android.graphics.PorterDuff;
+import android.view.ContextThemeWrapper;
+import androidx.appcompat.widget.Toolbar;
+import androidx.core.view.ViewCompat;
+import com.google.android.material.appbar.AppBarLayout;
+import com.google.android.material.appbar.CollapsingToolbarLayout;
+import de.danoeh.antennapod.R;
+
+public abstract class ToolbarIconTintManager implements AppBarLayout.OnOffsetChangedListener {
+    private final Context context;
+    private final CollapsingToolbarLayout collapsingToolbar;
+    private final Toolbar toolbar;
+    private boolean isTinted = false;
+
+    public ToolbarIconTintManager(Context context, Toolbar toolbar, CollapsingToolbarLayout collapsingToolbar) {
+        this.context = context;
+        this.collapsingToolbar = collapsingToolbar;
+        this.toolbar = toolbar;
+    }
+
+    @Override
+    public void onOffsetChanged(AppBarLayout appBarLayout, int offset) {
+        boolean tint  = (collapsingToolbar.getHeight() + offset) > (2 * ViewCompat.getMinimumHeight(collapsingToolbar));
+        if (isTinted != tint) {
+            isTinted = tint;
+            updateTint();
+        }
+    }
+
+    public void updateTint() {
+        if (isTinted) {
+            doTint(new ContextThemeWrapper(context, R.style.Theme_AntennaPod_Dark));
+            //toolbar.getNavigationIcon().setColorFilter(0xffffffff, PorterDuff.Mode.SRC_ATOP);
+            toolbar.getOverflowIcon().setColorFilter(0xffffffff, PorterDuff.Mode.SRC_ATOP);
+        } else {
+            doTint(context);
+            //toolbar.getNavigationIcon().clearColorFilter();
+            toolbar.getOverflowIcon().clearColorFilter();
+        }
+    }
+
+    /**
+     * View expansion was changed. Icons need to be tinted
+     * @param themedContext ContextThemeWrapper with dark theme while expanded
+     */
+    protected abstract void doTint(Context themedContext);
+}