1 files changed, 72 insertions, 0 deletions
diff --git a/android/src/com/artifex/mupdfdemo/MuPDFPageAdapter.java b/android/src/com/artifex/mupdfdemo/MuPDFPageAdapter.java
new file mode 100644
index 00000000..806d0830
--- /dev/null
+++ b/android/src/com/artifex/mupdfdemo/MuPDFPageAdapter.java
@@ -0,0 +1,72 @@
+package com.artifex.mupdfdemo;
+
+import android.content.Context;
+import android.graphics.Point;
+import android.graphics.PointF;
+import android.util.SparseArray;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+
+public class MuPDFPageAdapter extends BaseAdapter {
+	private final Context mContext;
+	private final MuPDFCore mCore;
+	private final SparseArray<PointF> mPageSizes = new SparseArray<PointF>();
+
+	public MuPDFPageAdapter(Context c, MuPDFCore core) {
+		mContext = c;
+		mCore = core;
+	}
+
+	public int getCount() {
+		return mCore.countPages();
+	}
+
+	public Object getItem(int position) {
+		return null;
+	}
+
+	public long getItemId(int position) {
+		return 0;
+	}
+
+	public View getView(final int position, View convertView, ViewGroup parent) {
+		final MuPDFPageView pageView;
+		if (convertView == null) {
+			pageView = new MuPDFPageView(mContext, mCore, new Point(parent.getWidth(), parent.getHeight()));
+		} else {
+			pageView = (MuPDFPageView) convertView;
+		}
+
+		PointF pageSize = mPageSizes.get(position);
+		if (pageSize != null) {
+			// We already know the page size. Set it up
+			// immediately
+			pageView.setPage(position, pageSize);
+		} else {
+			// Page size as yet unknown. Blank it for now, and
+			// start a background task to find the size
+			pageView.blank(position);
+			AsyncTask<Void,Void,PointF> sizingTask = new AsyncTask<Void,Void,PointF>() {
+				@Override
+				protected PointF doInBackground(Void... arg0) {
+					return mCore.getPageSize(position);
+				}
+
+				@Override
+				protected void onPostExecute(PointF result) {
+					super.onPostExecute(result);
+					// We now know the page size
+					mPageSizes.put(position, result);
+					// Check that this view hasn't been reused for
+					// another page since we started
+					if (pageView.getPage() == position)
+						pageView.setPage(position, result);
+				}
+			};
+
+			sizingTask.execute((Void)null);
+		}
+		return pageView;
+	}
+}