package com.artifex.mupdfdemo; import android.content.Context; import android.graphics.Point; import android.graphics.PointF; import android.graphics.RectF; import android.os.Handler; import android.util.Base64; import android.view.MotionEvent; import android.view.View; import android.webkit.WebView; import android.webkit.WebViewClient; public class MuPDFReflowView extends WebView implements MuPDFView { private final MuPDFCore mCore; private final Handler mHandler; private final Point mParentSize; private int mPage; private int mContentHeight; AsyncTask mLoadHTML; public MuPDFReflowView(Context c, MuPDFCore core, Point parentSize) { super(c); mHandler = new Handler(); mCore = core; mParentSize = parentSize; mContentHeight = parentSize.y; getSettings().setJavaScriptEnabled(true); addJavascriptInterface(new Object(){ public void reportContentHeight(String value) { mContentHeight = (int)Float.parseFloat(value); mHandler.post(new Runnable() { public void run() { requestLayout(); } }); } }, "HTMLOUT"); setWebViewClient(new WebViewClient() { @Override public void onPageFinished(WebView view, String url) { requestHeight(); } }); } private void requestHeight() { // Get the webview to report the content height via the interface setup // above. Workaround for getContentHeight not working loadUrl("javascript:elem=document.getElementById('content');window.HTMLOUT.reportContentHeight("+mParentSize.x+"*elem.offsetHeight/elem.offsetWidth)"); } public void setPage(int page, PointF size) { mPage = page; if (mLoadHTML != null) { mLoadHTML.cancel(true); } mLoadHTML = new AsyncTask() { @Override protected byte[] doInBackground(Void... params) { return mCore.html(mPage); } @Override protected void onPostExecute(byte[] result) { String b64 = Base64.encodeToString(result, Base64.DEFAULT); loadData(b64, "text/html; charset=utf-8", "base64"); } }; mLoadHTML.execute(); } public int getPage() { return mPage; } public void setScale(float scale) { loadUrl("javascript:document.getElementById('content').style.zoom=\""+(int)(scale*100)+"%\""); requestHeight(); } public void blank(int page) { } public Hit passClickEvent(float x, float y) { return Hit.Nothing; } public LinkInfo hitLink(float x, float y) { return null; } public void selectText(float x0, float y0, float x1, float y1) { } public void deselectText() { } public boolean copySelection() { return false; } public boolean markupSelection(Annotation.Type type) { return false; } public void startDraw(float x, float y) { } public void continueDraw(float x, float y) { } public void cancelDraw() { } public boolean saveDraw() { return false; } public void setSearchBoxes(RectF[] searchBoxes) { } public void setLinkHighlighting(boolean f) { } public void deleteSelectedAnnotation() { } public void deselectAnnotation() { } public void setChangeReporter(Runnable reporter) { } public void update() { } public void addHq(boolean update) { } public void removeHq() { } public void releaseResources() { if (mLoadHTML != null) { mLoadHTML.cancel(true); mLoadHTML = null; } } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int x, y; switch(View.MeasureSpec.getMode(widthMeasureSpec)) { case View.MeasureSpec.UNSPECIFIED: x = mParentSize.x; break; default: x = View.MeasureSpec.getSize(widthMeasureSpec); } switch(View.MeasureSpec.getMode(heightMeasureSpec)) { case View.MeasureSpec.UNSPECIFIED: y = mContentHeight; break; default: y = View.MeasureSpec.getSize(heightMeasureSpec); } setMeasuredDimension(x, y); } @Override public boolean onTouchEvent(MotionEvent ev) { // TODO Auto-generated method stub return false; } }