diff options
Diffstat (limited to 'android/src/com/artifex/mupdfdemo/MuPDFPageAdapter.java')
-rw-r--r-- | android/src/com/artifex/mupdfdemo/MuPDFPageAdapter.java | 72 |
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; + } +} |