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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<Void,Void,byte[]> 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<Void,Void,byte[]>() {
@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;
}
}
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