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* [android] Support richtext component (#1796)
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108
...id/commons/src/main/java/com/alibaba/weex/commons/adapter/PicassoBasedDrawableLoader.java
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| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 com.alibaba.weex.commons.adapter; | ||
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| import android.content.Context; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.Canvas; | ||
| import android.graphics.ColorFilter; | ||
| import android.graphics.PixelFormat; | ||
| import android.graphics.drawable.BitmapDrawable; | ||
| import android.graphics.drawable.Drawable; | ||
| import android.view.Gravity; | ||
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| import com.squareup.picasso.Picasso; | ||
| import com.squareup.picasso.Target; | ||
| import com.taobao.weex.WXSDKManager; | ||
| import com.taobao.weex.adapter.DrawableStrategy; | ||
| import com.taobao.weex.adapter.IDrawableLoader; | ||
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| public class PicassoBasedDrawableLoader implements IDrawableLoader { | ||
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| private Context mContext; | ||
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| public PicassoBasedDrawableLoader(Context context) { | ||
| mContext = context; | ||
| } | ||
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| @Override | ||
| public void setDrawable(final String url, | ||
| final DrawableTarget drawableTarget, | ||
| final DrawableStrategy drawableStrategy) { | ||
| WXSDKManager.getInstance().postOnUiThread(new Runnable() { | ||
| @Override | ||
| public void run() { | ||
| String temp = url; | ||
| if (url.startsWith("//")) { | ||
| temp = "http:" + url; | ||
| } | ||
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| /** This is a hack for picasso, as Picasso hold weakReference to Target. | ||
| * http://stackoverflow.com/questions/24180805/onbitmaploaded-of-target-object-not-called-on-first-load | ||
| */ | ||
| class PlaceHolderDrawableTarget extends Drawable implements Target { | ||
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| @Override | ||
| public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) { | ||
| BitmapDrawable bitmapDrawable = new BitmapDrawable(mContext.getResources(), bitmap); | ||
| bitmapDrawable.setGravity(Gravity.FILL); | ||
| drawableTarget.setDrawable(bitmapDrawable, true); | ||
| } | ||
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| @Override | ||
| public void onBitmapFailed(Drawable errorDrawable) { | ||
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| } | ||
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| @Override | ||
| public void onPrepareLoad(Drawable placeHolderDrawable) { | ||
| drawableTarget.setDrawable(this, true); | ||
| } | ||
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| @Override | ||
| public void draw(Canvas canvas) { | ||
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| } | ||
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| @Override | ||
| public void setAlpha(int alpha) { | ||
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| } | ||
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| @Override | ||
| public void setColorFilter(ColorFilter colorFilter) { | ||
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| } | ||
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| @Override | ||
| public int getOpacity() { | ||
| return PixelFormat.UNKNOWN; | ||
| } | ||
| } | ||
| Picasso. | ||
| with(mContext). | ||
| load(temp). | ||
| resize(drawableStrategy.width, drawableStrategy.height). | ||
| onlyScaleDown(). | ||
| into(new PlaceHolderDrawableTarget()); | ||
| } | ||
| }, 0); | ||
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| } | ||
| } |
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82 changes: 82 additions & 0 deletions
82
android/sdk/src/main/java/com/taobao/weex/ui/component/richtext/WXRichText.java
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|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 com.taobao.weex.ui.component.richtext; | ||
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| import android.content.Context; | ||
| import android.support.annotation.NonNull; | ||
| import android.text.Spannable; | ||
| import android.text.Spanned; | ||
| import android.text.SpannedString; | ||
| import android.text.TextUtils; | ||
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| import com.taobao.weex.WXSDKInstance; | ||
| import com.taobao.weex.layout.measurefunc.TextContentBoxMeasurement; | ||
| import com.taobao.weex.ui.ComponentCreator; | ||
| import com.taobao.weex.ui.action.BasicComponentData; | ||
| import com.taobao.weex.ui.component.WXComponent; | ||
| import com.taobao.weex.ui.component.WXText; | ||
| import com.taobao.weex.ui.component.WXVContainer; | ||
| import com.taobao.weex.ui.component.richtext.node.RichTextNode; | ||
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| import java.lang.reflect.InvocationTargetException; | ||
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| public class WXRichText extends WXText { | ||
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| static class RichTextContentBoxMeasurement extends TextContentBoxMeasurement { | ||
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| public RichTextContentBoxMeasurement(WXComponent component) { | ||
| super(component); | ||
| } | ||
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| @NonNull | ||
| @Override | ||
| protected Spanned createSpanned(String text) { | ||
| if (mComponent.getInstance() != null & mComponent.getInstance().getUIContext() != null && | ||
| !TextUtils.isEmpty(mComponent.getInstanceId())) { | ||
| Spannable spannable = RichTextNode.parse( | ||
| mComponent.getInstance().getUIContext(), | ||
| mComponent.getInstanceId(), | ||
| mComponent.getRef(), | ||
| text); | ||
| updateSpannable(spannable, RichTextNode.createSpanFlag(0)); | ||
| return spannable; | ||
| } else { | ||
| return new SpannedString(""); | ||
| } | ||
| } | ||
| } | ||
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| public static class Creator implements ComponentCreator { | ||
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| public WXComponent createInstance(WXSDKInstance instance, WXVContainer parent, BasicComponentData basicComponentData) throws IllegalAccessException, InvocationTargetException, InstantiationException { | ||
| return new WXRichText(instance, parent, basicComponentData); | ||
| } | ||
| } | ||
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| public WXRichText(WXSDKInstance instance, WXVContainer parent, BasicComponentData basicComponentData) { | ||
| super(instance, parent, basicComponentData); | ||
| setContentBoxMeasurement(new RichTextContentBoxMeasurement(this)); | ||
| } | ||
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| @Override | ||
| protected WXRichTextView initComponentHostView(@NonNull Context context) { | ||
| return new WXRichTextView(context); | ||
| } | ||
| } |
114 changes: 114 additions & 0 deletions
114
android/sdk/src/main/java/com/taobao/weex/ui/component/richtext/WXRichTextView.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 com.taobao.weex.ui.component.richtext; | ||
|
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| import android.content.Context; | ||
| import android.graphics.drawable.Drawable; | ||
| import android.text.Layout; | ||
| import android.text.Selection; | ||
| import android.text.Spannable; | ||
| import android.text.Spanned; | ||
| import android.text.style.ClickableSpan; | ||
| import android.view.MotionEvent; | ||
| import android.widget.TextView; | ||
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| import com.taobao.weex.ui.component.richtext.span.ImgSpan; | ||
| import com.taobao.weex.ui.view.WXTextView; | ||
|
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| public class WXRichTextView extends WXTextView { | ||
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| public WXRichTextView(Context context) { | ||
| super(context); | ||
| } | ||
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| @Override | ||
| public boolean onTouchEvent(MotionEvent event) { | ||
| boolean superResult = super.onTouchEvent(event); | ||
| boolean handled = false; | ||
| if (isEnabled() && getTextLayout() != null && getText() instanceof Spannable) { | ||
| Spannable spannable = (Spannable) getText(); | ||
| handled = updateSelection(event, spannable); | ||
| } | ||
| return handled || superResult; | ||
| } | ||
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| @Override | ||
| protected boolean verifyDrawable(Drawable who) { | ||
| super.verifyDrawable(who); | ||
| return true; | ||
| } | ||
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| @Override | ||
| public void setTextLayout(Layout layout) { | ||
| super.setTextLayout(layout); | ||
| if (layout.getText() instanceof Spanned) { | ||
| Spanned spanned = (Spanned) layout.getText(); | ||
| ImgSpan[] imgSpan = spanned.getSpans(0, spanned.length(), ImgSpan.class); | ||
| if (imgSpan != null) { | ||
| for (ImgSpan span : imgSpan) { | ||
| span.setView(this); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| /** | ||
| * Mostly copied from | ||
| * {@link android.text.method.LinkMovementMethod#onTouchEvent(TextView, Spannable, MotionEvent)}. | ||
| */ | ||
| private boolean updateSelection(MotionEvent event, Spannable buffer) { | ||
| int action = event.getActionMasked(); | ||
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| if (action == MotionEvent.ACTION_UP || | ||
| action == MotionEvent.ACTION_DOWN) { | ||
| int x = (int) event.getX(); | ||
| int y = (int) event.getY(); | ||
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| x -= getPaddingLeft(); | ||
| y -= getPaddingTop(); | ||
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| x += getScrollX(); | ||
| y += getScrollY(); | ||
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| Layout layout = getTextLayout(); | ||
| int line = layout.getLineForVertical(y); | ||
| int off = layout.getOffsetForHorizontal(line, x); | ||
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| ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class); | ||
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| if (link.length != 0) { | ||
| if (action == MotionEvent.ACTION_UP) { | ||
| link[0].onClick(this); | ||
| } else { | ||
| Selection.setSelection(buffer, | ||
| buffer.getSpanStart(link[0]), | ||
| buffer.getSpanEnd(link[0])); | ||
| } | ||
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| return true; | ||
| } else { | ||
| Selection.removeSelection(buffer); | ||
| } | ||
| } | ||
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| return false; | ||
| } | ||
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| } |
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