mirror of
https://github.com/moparisthebest/open-keychain
synced 2024-11-27 11:12:15 -05:00
Switch from HtmlSpanner to HtmlTextView
This commit is contained in:
Dominik Schürmann
parent
5dc693c64c
commit
5b6880d2e3
Binary file not shown.
Binary file not shown.
@ -10,3 +10,4 @@
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# Project target.
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target=android-17
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android.library.reference.1=../libraries/ActionBarSherlock
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android.library.reference.2=../libraries/HtmlTextView
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@ -51,7 +51,7 @@
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</LinearLayout>
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</LinearLayout>
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<net.nightwhistler.htmlspanner.JellyBeanSpanFixTextView
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<org.sufficientlysecure.htmltextview.HtmlTextView
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android:id="@+id/help_about_text"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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@ -4,7 +4,7 @@
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android:layout_height="fill_parent"
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android:orientation="vertical" >
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<net.nightwhistler.htmlspanner.JellyBeanSpanFixTextView
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<org.sufficientlysecure.htmltextview.HtmlTextView
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android:id="@+id/nfc_beam_text"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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@ -28,7 +28,7 @@ And don't add newlines before or after p tags because of transifex -->
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<li><a href="http://actionbarsherlock.com">ActionBarSherlock</a> (Apache License v2)</li>
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<li><a href="http://code.google.com/p/zxing/">ZXing QRCode Integration</a> (Apache License v2)</li>
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<li><a href="http://rtyley.github.com/spongycastle/">SpongyCastle</a> (MIT X11 License)</li>
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<li><a href="https://github.com/dschuermann/HtmlSpanner">HtmlSpanner Fork</a> (Apache License v2)</li>
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<li><a href="https://github.com/dschuermann/html-textview">HtmlTextView</a> (Apache License v2)</li>
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<li>Icons from <a href="http://rrze-icon-set.berlios.de/">RRZE Icon Set</a> (Creative Commons Attribution Share-Alike licence 3.0)</li>
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<li>Icons from <a href="http://tango.freedesktop.org/">Tango Icon Set</a> (Public Domain)</li>
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</ul>
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@ -17,22 +17,15 @@
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package org.sufficientlysecure.keychain.ui;
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import java.io.IOException;
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import java.io.InputStream;
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import net.nightwhistler.htmlspanner.HtmlSpanner;
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import net.nightwhistler.htmlspanner.JellyBeanSpanFixTextView;
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import org.sufficientlysecure.htmltextview.HtmlTextView;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.helper.OtherHelper;
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import org.sufficientlysecure.keychain.util.Log;
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import org.sufficientlysecure.keychain.R;
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import org.sufficientlysecure.keychain.util.Log;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.os.Bundle;
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import android.text.method.LinkMovementMethod;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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@ -57,26 +50,13 @@ public class HelpFragmentAbout extends SherlockFragment {
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public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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View view = inflater.inflate(R.layout.help_fragment_about, container, false);
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// load html from html file from /res/raw
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InputStream inputStreamText = getResources().openRawResource(R.raw.help_about);
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TextView versionText = (TextView) view.findViewById(R.id.help_about_version);
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versionText.setText(getString(R.string.help_about_version) + " " + getVersion());
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JellyBeanSpanFixTextView aboutTextView = (JellyBeanSpanFixTextView) view
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.findViewById(R.id.help_about_text);
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HtmlTextView aboutTextView = (HtmlTextView) view.findViewById(R.id.help_about_text);
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// load html into textview
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HtmlSpanner htmlSpanner = new HtmlSpanner();
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htmlSpanner.setStripExtraWhiteSpace(true);
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try {
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aboutTextView.setText(htmlSpanner.fromHtml(inputStreamText));
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} catch (IOException e) {
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Log.e(Constants.TAG, "Error while reading raw resources as stream", e);
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}
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// make links work
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aboutTextView.setMovementMethod(LinkMovementMethod.getInstance());
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// load html from raw resource (Parsing handled by HtmlTextView library)
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aboutTextView.setHtmlFromRawResource(getActivity(), R.raw.help_about);
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// no flickering when clicking textview for Android < 4
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aboutTextView.setTextColor(getResources().getColor(android.R.color.black));
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@ -17,20 +17,10 @@
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package org.sufficientlysecure.keychain.ui;
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import java.io.IOException;
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import java.io.InputStream;
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import net.nightwhistler.htmlspanner.HtmlSpanner;
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import net.nightwhistler.htmlspanner.JellyBeanSpanFixTextView;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.helper.OtherHelper;
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import org.sufficientlysecure.keychain.util.Log;
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import org.sufficientlysecure.keychain.R;
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import org.sufficientlysecure.htmltextview.HtmlTextView;
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import android.app.Activity;
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import android.os.Bundle;
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import android.text.method.LinkMovementMethod;
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import android.util.TypedValue;
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import android.view.LayoutInflater;
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import android.view.View;
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@ -73,15 +63,12 @@ public class HelpFragmentHtml extends SherlockFragment {
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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htmlFile = getArguments().getInt(ARG_HTML_FILE);
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// load html from html file from /res/raw
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InputStream inputStreamText = getResources().openRawResource(htmlFile);
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mActivity = getActivity();
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htmlFile = getArguments().getInt(ARG_HTML_FILE);
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ScrollView scroller = new ScrollView(mActivity);
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JellyBeanSpanFixTextView text = new JellyBeanSpanFixTextView(mActivity);
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HtmlTextView text = new HtmlTextView(mActivity);
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// padding
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int padding = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 16, mActivity
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@ -90,17 +77,8 @@ public class HelpFragmentHtml extends SherlockFragment {
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scroller.addView(text);
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// load html into textview
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HtmlSpanner htmlSpanner = new HtmlSpanner();
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htmlSpanner.setStripExtraWhiteSpace(true);
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try {
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text.setText(htmlSpanner.fromHtml(inputStreamText));
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} catch (IOException e) {
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Log.e(Constants.TAG, "Error while reading raw resources as stream", e);
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}
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// make links work
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text.setMovementMethod(LinkMovementMethod.getInstance());
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// load html from raw resource (Parsing handled by HtmlTextView library)
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text.setHtmlFromRawResource(getActivity(), htmlFile);
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// no flickering when clicking textview for Android < 4
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text.setTextColor(getResources().getColor(android.R.color.black));
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@ -17,12 +17,7 @@
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package org.sufficientlysecure.keychain.ui;
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import java.io.IOException;
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import java.io.InputStream;
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import net.nightwhistler.htmlspanner.HtmlSpanner;
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import net.nightwhistler.htmlspanner.JellyBeanSpanFixTextView;
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import org.sufficientlysecure.htmltextview.HtmlTextView;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.R;
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import org.sufficientlysecure.keychain.helper.ActionBarHelper;
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@ -42,8 +37,6 @@ import android.os.Handler;
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import android.os.Message;
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import android.os.Parcelable;
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import android.provider.Settings;
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import android.text.method.LinkMovementMethod;
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import android.util.Log;
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import android.widget.Toast;
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import com.actionbarsherlock.app.SherlockFragmentActivity;
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@ -131,27 +124,15 @@ public class ShareNfcBeamActivity extends SherlockFragmentActivity implements
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}
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private void buildView() {
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// load html from html file from /res/raw
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InputStream inputStreamText = getResources().openRawResource(R.raw.nfc_beam_share);
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setContentView(R.layout.share_nfc_beam);
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JellyBeanSpanFixTextView text = (JellyBeanSpanFixTextView) findViewById(R.id.nfc_beam_text);
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HtmlTextView aboutTextView = (HtmlTextView) findViewById(R.id.nfc_beam_text);
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// load html into textview
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HtmlSpanner htmlSpanner = new HtmlSpanner();
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htmlSpanner.setStripExtraWhiteSpace(true);
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try {
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text.setText(htmlSpanner.fromHtml(inputStreamText));
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} catch (IOException e) {
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Log.e(Constants.TAG, "Error while reading raw resources as stream", e);
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}
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// make links work
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text.setMovementMethod(LinkMovementMethod.getInstance());
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// load html from raw resource (Parsing handled by HtmlTextView library)
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aboutTextView.setHtmlFromRawResource(this, R.raw.nfc_beam_share);
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// no flickering when clicking textview for Android < 4
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text.setTextColor(getResources().getColor(android.R.color.black));
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aboutTextView.setTextColor(getResources().getColor(android.R.color.black));
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// set actionbar without home button if called from another app
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ActionBarHelper.setBackButton(this);
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30
libraries/HtmlTextView/.gitignore
vendored
Normal file
30
libraries/HtmlTextView/.gitignore
vendored
Normal file
@ -0,0 +1,30 @@
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#Android specific
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bin
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gen
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obj
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libs/armeabi
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lint.xml
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local.properties
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release.properties
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ant.properties
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*.class
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*.apk
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#Gradle
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.gradle
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build
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gradle.properties
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#Maven
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target
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||||
pom.xml.*
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||||
|
||||
#Eclipse
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||||
.project
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||||
.classpath
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||||
.settings
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||||
.metadata
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|
||||
#IntelliJ IDEA
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||||
.idea
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||||
*.iml
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||||
13
libraries/HtmlTextView/AndroidManifest.xml
Normal file
13
libraries/HtmlTextView/AndroidManifest.xml
Normal file
@ -0,0 +1,13 @@
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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="org.sufficientlysecure.htmltextview"
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android:versionCode="1"
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android:versionName="1.0">
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<uses-sdk
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android:minSdkVersion="7"
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android:targetSdkVersion="17"/>
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<application/>
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|
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</manifest>
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202
libraries/HtmlTextView/LICENSE
Normal file
202
libraries/HtmlTextView/LICENSE
Normal file
@ -0,0 +1,202 @@
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
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|
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1. Definitions.
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|
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"License" shall mean the terms and conditions for use, reproduction,
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and distribution as defined by Sections 1 through 9 of this document.
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"Licensor" shall mean the copyright owner or entity authorized by
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"Legal Entity" shall mean the union of the acting entity and all
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|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
45
libraries/HtmlTextView/README.md
Normal file
45
libraries/HtmlTextView/README.md
Normal file
@ -0,0 +1,45 @@
|
||||
# HtmlTextView for Android
|
||||
|
||||
This HtmlTextView supports all HTML tags supported by Android's Html class (see [The CommonsBlog](http://commonsware.com/blog/Android/2010/05/26/html-tags-supported-by-textview.html) and [history of Html class](https://github.com/android/platform_frameworks_base/commits/master/core/java/android/text/Html.java) for newer additions).
|
||||
Additionally, list tags are supported (``<ul>``, ``<ol>``, ``<dd>``) and code tags with ``<code>``.
|
||||
|
||||
This also includes a workaround to prevent TextView crashing on [specific Android versions](http://code.google.com/p/android/issues/detail?id=35466).
|
||||
|
||||
This library is kept very tiny with no external dependencies.
|
||||
I am using it to provide Help/About Activities in my apps.
|
||||
|
||||
## Example
|
||||
|
||||
```
|
||||
HtmlTextView text = new HtmlTextView(this);
|
||||
|
||||
// loads html from string
|
||||
text.setHtmlFromString("<b>Hello</b><ul><li>world</li><li>cats</li></ul>");
|
||||
```
|
||||
or
|
||||
```
|
||||
HtmlTextView text = new HtmlTextView(this);
|
||||
|
||||
// loads html from raw resource, i.e., a html file in res/raw/, this allows translatable resource (e.g., res/raw-de/ for german)
|
||||
text.setHtmlFromRawResource(this, R.raw.help);
|
||||
```
|
||||
|
||||
## Use library as Gradle dependency (Android library project)
|
||||
|
||||
1. Copy this folder to your project and include it in ``settings.gradle`` with ``include ':html-textview'``
|
||||
2. Add dependency ``compile project(':html-textview')`` to your project's ``build.gradle``.
|
||||
|
||||
## License
|
||||
|
||||
Apache License v2
|
||||
|
||||
## Authors
|
||||
- This library was hacked together by Dominik Schürmann
|
||||
- Original [TagHandler](https://gist.github.com/mlakkadshaw/5983704) developed by [Mohammed Lakkadshaw](http://blog.mohammedlakkadshaw.com/)
|
||||
- Original [UrlImageGetter](https://gist.github.com/Antarix/4167655) developed by Antarix Tandon
|
||||
- [JellyBeanSpanFixTextView](https://gist.github.com/pyricau/3424004) (with fix from comment) developed by Pierre-Yves Ricau
|
||||
|
||||
## Contributions
|
||||
|
||||
Feel free to fork and do pull requests. I am more than happy to merge them.
|
||||
Please do not introduce external dependencies.
|
||||
24
libraries/HtmlTextView/build.gradle
Normal file
24
libraries/HtmlTextView/build.gradle
Normal file
@ -0,0 +1,24 @@
|
||||
buildscript {
|
||||
repositories {
|
||||
mavenCentral()
|
||||
}
|
||||
dependencies {
|
||||
classpath 'com.android.tools.build:gradle:0.5.+'
|
||||
}
|
||||
}
|
||||
|
||||
apply plugin: 'android-library'
|
||||
|
||||
|
||||
android {
|
||||
compileSdkVersion 17
|
||||
buildToolsVersion '17'
|
||||
|
||||
sourceSets {
|
||||
main {
|
||||
manifest.srcFile 'AndroidManifest.xml'
|
||||
java.srcDirs = ['src']
|
||||
res.srcDirs = ['res']
|
||||
}
|
||||
}
|
||||
}
|
||||
15
libraries/HtmlTextView/project.properties
Normal file
15
libraries/HtmlTextView/project.properties
Normal file
@ -0,0 +1,15 @@
|
||||
# This file is automatically generated by Android Tools.
|
||||
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
|
||||
#
|
||||
# This file must be checked in Version Control Systems.
|
||||
#
|
||||
# To customize properties used by the Ant build system edit
|
||||
# "ant.properties", and override values to adapt the script to your
|
||||
# project structure.
|
||||
#
|
||||
# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
|
||||
#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
|
||||
|
||||
# Project target.
|
||||
target=android-7
|
||||
android.library=true
|
||||
@ -0,0 +1,92 @@
|
||||
/*
|
||||
* Copyright (C) 2013 Mohammed Lakkadshaw
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.sufficientlysecure.htmltextview;
|
||||
|
||||
import java.util.Vector;
|
||||
|
||||
import org.xml.sax.XMLReader;
|
||||
|
||||
import android.text.Editable;
|
||||
import android.text.Html;
|
||||
import android.text.Spannable;
|
||||
import android.text.style.BulletSpan;
|
||||
import android.text.style.LeadingMarginSpan;
|
||||
import android.text.style.TypefaceSpan;
|
||||
import android.util.Log;
|
||||
|
||||
public class HtmlTagHandler implements Html.TagHandler {
|
||||
private int mListItemCount = 0;
|
||||
private Vector<String> mListParents = new Vector<String>();
|
||||
|
||||
@Override
|
||||
public void handleTag(final boolean opening, final String tag, Editable output, final XMLReader xmlReader) {
|
||||
|
||||
if (tag.equals("ul") || tag.equals("ol") || tag.equals("dd")) {
|
||||
if (opening) {
|
||||
mListParents.add(tag);
|
||||
} else mListParents.remove(tag);
|
||||
|
||||
mListItemCount = 0;
|
||||
} else if (tag.equals("li") && !opening) {
|
||||
handleListTag(output);
|
||||
} else if (tag.equalsIgnoreCase("code")) {
|
||||
if (opening) {
|
||||
output.setSpan(new TypefaceSpan("monospace"), output.length(), output.length(), Spannable.SPAN_MARK_MARK);
|
||||
} else {
|
||||
Log.d(HtmlTextView.TAG, "Code tag encountered");
|
||||
Object obj = getLast(output, TypefaceSpan.class);
|
||||
int where = output.getSpanStart(obj);
|
||||
output.setSpan(new TypefaceSpan("monospace"), where, output.length(), 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private Object getLast(Editable text, Class kind) {
|
||||
Object[] objs = text.getSpans(0, text.length(), kind);
|
||||
if (objs.length == 0) {
|
||||
return null;
|
||||
} else {
|
||||
for (int i = objs.length; i > 0; i--) {
|
||||
if (text.getSpanFlags(objs[i - 1]) == Spannable.SPAN_MARK_MARK) {
|
||||
return objs[i - 1];
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
private void handleListTag(Editable output) {
|
||||
if (mListParents.lastElement().equals("ul")) {
|
||||
output.append("\n");
|
||||
String[] split = output.toString().split("\n");
|
||||
|
||||
int lastIndex = split.length - 1;
|
||||
int start = output.length() - split[lastIndex].length() - 1;
|
||||
output.setSpan(new BulletSpan(15 * mListParents.size()), start, output.length(), 0);
|
||||
} else if (mListParents.lastElement().equals("ol")) {
|
||||
mListItemCount++;
|
||||
|
||||
output.append("\n");
|
||||
String[] split = output.toString().split("\n");
|
||||
|
||||
int lastIndex = split.length - 1;
|
||||
int start = output.length() - split[lastIndex].length() - 1;
|
||||
output.insert(start, mListItemCount + ". ");
|
||||
output.setSpan(new LeadingMarginSpan.Standard(15 * mListParents.size()), start, output.length(), 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,83 @@
|
||||
/*
|
||||
* Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.sufficientlysecure.htmltextview;
|
||||
|
||||
import android.content.Context;
|
||||
import android.text.Html;
|
||||
import android.text.method.LinkMovementMethod;
|
||||
import android.util.AttributeSet;
|
||||
|
||||
import java.io.InputStream;
|
||||
|
||||
public class HtmlTextView extends JellyBeanSpanFixTextView {
|
||||
|
||||
public static final String TAG = "HtmlTextView";
|
||||
|
||||
public HtmlTextView(Context context, AttributeSet attrs, int defStyle) {
|
||||
super(context, attrs, defStyle);
|
||||
}
|
||||
|
||||
public HtmlTextView(Context context, AttributeSet attrs) {
|
||||
super(context, attrs);
|
||||
}
|
||||
|
||||
public HtmlTextView(Context context) {
|
||||
super(context);
|
||||
}
|
||||
|
||||
/**
|
||||
* http://stackoverflow.com/questions/309424/read-convert-an-inputstream-to-a-string
|
||||
*
|
||||
* @param is
|
||||
* @return
|
||||
*/
|
||||
static private String convertStreamToString(java.io.InputStream is) {
|
||||
java.util.Scanner s = new java.util.Scanner(is).useDelimiter("\\A");
|
||||
return s.hasNext() ? s.next() : "";
|
||||
}
|
||||
|
||||
/**
|
||||
* Loads HTML from a raw resource, i.e., a HTML file in res/raw/.
|
||||
* This allows translatable resource (e.g., res/raw-de/ for german).
|
||||
* The containing HTML is parsed to Android's Spannable format and then displayed.
|
||||
*
|
||||
* @param context
|
||||
* @param id for example: R.raw.help
|
||||
*/
|
||||
public void setHtmlFromRawResource(Context context, int id) {
|
||||
// load html from html file from /res/raw
|
||||
InputStream inputStreamText = context.getResources().openRawResource(id);
|
||||
|
||||
setHtmlFromString(convertStreamToString(inputStreamText));
|
||||
}
|
||||
|
||||
/**
|
||||
* Parses String containing HTML to Android's Spannable format and displays it in this TextView.
|
||||
*
|
||||
* @param html String containing HTML, for example: "<b>Hello world!</b>"
|
||||
*/
|
||||
public void setHtmlFromString(String html) {
|
||||
// this uses Android's Html class for basic parsing, and HtmlTagHandler
|
||||
setText(Html.fromHtml(html, new UrlImageGetter(this, getContext()), new HtmlTagHandler()));
|
||||
|
||||
// make links work
|
||||
setMovementMethod(LinkMovementMethod.getInstance());
|
||||
|
||||
// no flickering when clicking textview for Android < 4
|
||||
// text.setTextColor(getResources().getColor(android.R.color.secondary_text_dark_nodisable));
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,212 @@
|
||||
/*
|
||||
* Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
|
||||
* Copyright (C) 2012 Pierre-Yves Ricau <py.ricau@gmail.com>
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.sufficientlysecure.htmltextview;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
|
||||
import android.content.Context;
|
||||
import android.text.SpannableStringBuilder;
|
||||
import android.text.Spanned;
|
||||
import android.util.AttributeSet;
|
||||
import android.util.Log;
|
||||
import android.widget.TextView;
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* A {@link android.widget.TextView} that insert spaces around its text spans where needed to prevent
|
||||
* {@link IndexOutOfBoundsException} in {@link #onMeasure(int, int)} on Jelly Bean.
|
||||
* <p>
|
||||
* When {@link #onMeasure(int, int)} throws an exception, we try to fix the text by adding spaces
|
||||
* around spans, until it works again. We then try removing some of the added spans, to minimize the
|
||||
* insertions.
|
||||
* <p>
|
||||
* The fix is time consuming (a few ms, it depends on the size of your text), but it should only
|
||||
* happen once per text change.
|
||||
* <p>
|
||||
* See http://code.google.com/p/android/issues/detail?id=35466
|
||||
*
|
||||
*/
|
||||
public class JellyBeanSpanFixTextView extends TextView {
|
||||
|
||||
private static class FixingResult {
|
||||
public final boolean fixed;
|
||||
public final List<Object> spansWithSpacesBefore;
|
||||
public final List<Object> spansWithSpacesAfter;
|
||||
|
||||
public static FixingResult fixed(List<Object> spansWithSpacesBefore,
|
||||
List<Object> spansWithSpacesAfter) {
|
||||
return new FixingResult(true, spansWithSpacesBefore, spansWithSpacesAfter);
|
||||
}
|
||||
|
||||
public static FixingResult notFixed() {
|
||||
return new FixingResult(false, null, null);
|
||||
}
|
||||
|
||||
private FixingResult(boolean fixed, List<Object> spansWithSpacesBefore,
|
||||
List<Object> spansWithSpacesAfter) {
|
||||
this.fixed = fixed;
|
||||
this.spansWithSpacesBefore = spansWithSpacesBefore;
|
||||
this.spansWithSpacesAfter = spansWithSpacesAfter;
|
||||
}
|
||||
}
|
||||
|
||||
public JellyBeanSpanFixTextView(Context context, AttributeSet attrs, int defStyle) {
|
||||
super(context, attrs, defStyle);
|
||||
}
|
||||
|
||||
public JellyBeanSpanFixTextView(Context context, AttributeSet attrs) {
|
||||
super(context, attrs);
|
||||
}
|
||||
|
||||
public JellyBeanSpanFixTextView(Context context) {
|
||||
super(context);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
|
||||
try {
|
||||
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
|
||||
} catch (IndexOutOfBoundsException e) {
|
||||
fixOnMeasure(widthMeasureSpec, heightMeasureSpec);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* If possible, fixes the Spanned text by adding spaces around spans when needed.
|
||||
*/
|
||||
private void fixOnMeasure(int widthMeasureSpec, int heightMeasureSpec) {
|
||||
CharSequence text = getText();
|
||||
if (text instanceof Spanned) {
|
||||
SpannableStringBuilder builder = new SpannableStringBuilder(text);
|
||||
fixSpannedWithSpaces(builder, widthMeasureSpec, heightMeasureSpec);
|
||||
} else {
|
||||
if (BuildConfig.DEBUG) {
|
||||
Log.d(HtmlTextView.TAG, "The text isn't a Spanned");
|
||||
}
|
||||
fallbackToString(widthMeasureSpec, heightMeasureSpec);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Add spaces around spans until the text is fixed, and then removes the unneeded spaces
|
||||
*/
|
||||
private void fixSpannedWithSpaces(SpannableStringBuilder builder, int widthMeasureSpec,
|
||||
int heightMeasureSpec) {
|
||||
long startFix = System.currentTimeMillis();
|
||||
|
||||
FixingResult result = addSpacesAroundSpansUntilFixed(builder, widthMeasureSpec,
|
||||
heightMeasureSpec);
|
||||
|
||||
if (result.fixed) {
|
||||
removeUnneededSpaces(widthMeasureSpec, heightMeasureSpec, builder, result);
|
||||
} else {
|
||||
fallbackToString(widthMeasureSpec, heightMeasureSpec);
|
||||
}
|
||||
|
||||
if (BuildConfig.DEBUG) {
|
||||
long fixDuration = System.currentTimeMillis() - startFix;
|
||||
Log.d(HtmlTextView.TAG, "fixSpannedWithSpaces() duration in ms: " + fixDuration);
|
||||
}
|
||||
}
|
||||
|
||||
private FixingResult addSpacesAroundSpansUntilFixed(SpannableStringBuilder builder,
|
||||
int widthMeasureSpec, int heightMeasureSpec) {
|
||||
|
||||
Object[] spans = builder.getSpans(0, builder.length(), Object.class);
|
||||
List<Object> spansWithSpacesBefore = new ArrayList<Object>(spans.length);
|
||||
List<Object> spansWithSpacesAfter = new ArrayList<Object>(spans.length);
|
||||
|
||||
for (Object span : spans) {
|
||||
int spanStart = builder.getSpanStart(span);
|
||||
if (isNotSpace(builder, spanStart - 1)) {
|
||||
builder.insert(spanStart, " ");
|
||||
spansWithSpacesBefore.add(span);
|
||||
}
|
||||
|
||||
int spanEnd = builder.getSpanEnd(span);
|
||||
if (isNotSpace(builder, spanEnd)) {
|
||||
builder.insert(spanEnd, " ");
|
||||
spansWithSpacesAfter.add(span);
|
||||
}
|
||||
|
||||
try {
|
||||
setTextAndMeasure(builder, widthMeasureSpec, heightMeasureSpec);
|
||||
return FixingResult.fixed(spansWithSpacesBefore, spansWithSpacesAfter);
|
||||
} catch (IndexOutOfBoundsException notFixed) {
|
||||
}
|
||||
}
|
||||
if (BuildConfig.DEBUG) {
|
||||
Log.d(HtmlTextView.TAG, "Could not fix the Spanned by adding spaces around spans");
|
||||
}
|
||||
return FixingResult.notFixed();
|
||||
}
|
||||
|
||||
private boolean isNotSpace(CharSequence text, int where) {
|
||||
if (where < 0)
|
||||
return true;
|
||||
return text.charAt(where) != ' ';
|
||||
}
|
||||
|
||||
private void setTextAndMeasure(CharSequence text, int widthMeasureSpec, int heightMeasureSpec) {
|
||||
setText(text);
|
||||
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
|
||||
}
|
||||
|
||||
private void removeUnneededSpaces(int widthMeasureSpec, int heightMeasureSpec,
|
||||
SpannableStringBuilder builder, FixingResult result) {
|
||||
|
||||
for (Object span : result.spansWithSpacesAfter) {
|
||||
int spanEnd = builder.getSpanEnd(span);
|
||||
builder.delete(spanEnd, spanEnd + 1);
|
||||
try {
|
||||
setTextAndMeasure(builder, widthMeasureSpec, heightMeasureSpec);
|
||||
} catch (IndexOutOfBoundsException ignored) {
|
||||
builder.insert(spanEnd, " ");
|
||||
}
|
||||
}
|
||||
|
||||
boolean needReset = true;
|
||||
for (Object span : result.spansWithSpacesBefore) {
|
||||
int spanStart = builder.getSpanStart(span);
|
||||
builder.delete(spanStart - 1, spanStart);
|
||||
try {
|
||||
setTextAndMeasure(builder, widthMeasureSpec, heightMeasureSpec);
|
||||
needReset = false;
|
||||
} catch (IndexOutOfBoundsException ignored) {
|
||||
needReset = true;
|
||||
int newSpanStart = spanStart - 1;
|
||||
builder.insert(newSpanStart, " ");
|
||||
}
|
||||
}
|
||||
|
||||
if (needReset) {
|
||||
setText(builder);
|
||||
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
|
||||
}
|
||||
}
|
||||
|
||||
private void fallbackToString(int widthMeasureSpec, int heightMeasureSpec) {
|
||||
if (BuildConfig.DEBUG) {
|
||||
Log.d(HtmlTextView.TAG, "Fallback to unspanned text");
|
||||
}
|
||||
String fallbackText = getText().toString();
|
||||
setTextAndMeasure(fallbackText, widthMeasureSpec, heightMeasureSpec);
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,128 @@
|
||||
/*
|
||||
* Copyright (C) 2013 Antarix Tandon
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package org.sufficientlysecure.htmltextview;
|
||||
|
||||
import android.content.Context;
|
||||
import android.graphics.Canvas;
|
||||
import android.graphics.drawable.BitmapDrawable;
|
||||
import android.graphics.drawable.Drawable;
|
||||
import android.os.AsyncTask;
|
||||
import android.text.Html.ImageGetter;
|
||||
import android.view.View;
|
||||
|
||||
import org.apache.http.HttpResponse;
|
||||
import org.apache.http.client.methods.HttpGet;
|
||||
import org.apache.http.impl.client.DefaultHttpClient;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.net.MalformedURLException;
|
||||
|
||||
public class UrlImageGetter implements ImageGetter {
|
||||
Context c;
|
||||
View container;
|
||||
|
||||
/**
|
||||
* Construct the URLImageParser which will execute AsyncTask and refresh the container
|
||||
*
|
||||
* @param t
|
||||
* @param c
|
||||
*/
|
||||
public UrlImageGetter(View t, Context c) {
|
||||
this.c = c;
|
||||
this.container = t;
|
||||
}
|
||||
|
||||
public Drawable getDrawable(String source) {
|
||||
UrlDrawable urlDrawable = new UrlDrawable();
|
||||
|
||||
// get the actual source
|
||||
ImageGetterAsyncTask asyncTask = new ImageGetterAsyncTask(urlDrawable);
|
||||
|
||||
asyncTask.execute(source);
|
||||
|
||||
// return reference to URLDrawable where I will change with actual image from
|
||||
// the src tag
|
||||
return urlDrawable;
|
||||
}
|
||||
|
||||
public class ImageGetterAsyncTask extends AsyncTask<String, Void, Drawable> {
|
||||
UrlDrawable urlDrawable;
|
||||
|
||||
public ImageGetterAsyncTask(UrlDrawable d) {
|
||||
this.urlDrawable = d;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected Drawable doInBackground(String... params) {
|
||||
String source = params[0];
|
||||
return fetchDrawable(source);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onPostExecute(Drawable result) {
|
||||
// set the correct bound according to the result from HTTP call
|
||||
urlDrawable.setBounds(0, 0, 0 + result.getIntrinsicWidth(), 0 + result.getIntrinsicHeight());
|
||||
|
||||
// change the reference of the current drawable to the result
|
||||
// from the HTTP call
|
||||
urlDrawable.drawable = result;
|
||||
|
||||
// redraw the image by invalidating the container
|
||||
UrlImageGetter.this.container.invalidate();
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the Drawable from URL
|
||||
*
|
||||
* @param urlString
|
||||
* @return
|
||||
*/
|
||||
public Drawable fetchDrawable(String urlString) {
|
||||
try {
|
||||
InputStream is = fetch(urlString);
|
||||
Drawable drawable = Drawable.createFromStream(is, "src");
|
||||
drawable.setBounds(0, 0, 0 + drawable.getIntrinsicWidth(), 0 + drawable.getIntrinsicHeight());
|
||||
return drawable;
|
||||
} catch (Exception e) {
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
private InputStream fetch(String urlString) throws MalformedURLException, IOException {
|
||||
DefaultHttpClient httpClient = new DefaultHttpClient();
|
||||
HttpGet request = new HttpGet(urlString);
|
||||
HttpResponse response = httpClient.execute(request);
|
||||
return response.getEntity().getContent();
|
||||
}
|
||||
}
|
||||
|
||||
@SuppressWarnings("deprecation")
|
||||
public class UrlDrawable extends BitmapDrawable {
|
||||
// the drawable that you need to set, you could set the initial drawing
|
||||
// with the loading image if you need to
|
||||
protected Drawable drawable;
|
||||
|
||||
@Override
|
||||
public void draw(Canvas canvas) {
|
||||
// override the draw to facilitate refresh function later
|
||||
if (drawable != null) {
|
||||
drawable.draw(canvas);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user