diff options
Diffstat (limited to 'src/org/fox/ttrss/TitleWebView.java')
| -rw-r--r-- | src/org/fox/ttrss/TitleWebView.java | 180 |
1 files changed, 90 insertions, 90 deletions
diff --git a/src/org/fox/ttrss/TitleWebView.java b/src/org/fox/ttrss/TitleWebView.java index e39fc268..d55f2e35 100644 --- a/src/org/fox/ttrss/TitleWebView.java +++ b/src/org/fox/ttrss/TitleWebView.java @@ -1,91 +1,91 @@ -package org.fox.ttrss;
-
-// http://www.techques.com/question/1-9718245/Webview-in-Scrollview
-
-import android.content.Context;
-import android.graphics.Canvas;
-import android.util.AttributeSet;
-import android.view.MotionEvent;
-import android.view.View;
-import android.webkit.WebView;
-
-public class TitleWebView extends WebView{
-
- public TitleWebView(Context context, AttributeSet attrs){
- super(context, attrs);
- }
-
- private int titleHeight;
-
- @Override
- protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
- super.onMeasure(widthMeasureSpec, heightMeasureSpec);
- // determine height of title bar
- View title = getChildAt(0);
- titleHeight = title==null ? 0 : title.getMeasuredHeight();
- }
-
- @Override
- public boolean onInterceptTouchEvent(MotionEvent ev){
- return true; // don't pass our touch events to children (title bar), we send these in dispatchTouchEvent
- }
-
- private boolean touchInTitleBar;
- @Override
- public boolean dispatchTouchEvent(MotionEvent me){
-
- boolean wasInTitle = false;
- switch(me.getActionMasked()){
- case MotionEvent.ACTION_DOWN:
- touchInTitleBar = (me.getY() <= visibleTitleHeight());
- break;
-
- case MotionEvent.ACTION_UP:
- case MotionEvent.ACTION_CANCEL:
- wasInTitle = touchInTitleBar;
- touchInTitleBar = false;
- break;
- }
- if(touchInTitleBar || wasInTitle) {
- View title = getChildAt(0);
- if(title!=null) {
- // this touch belongs to title bar, dispatch it here
- me.offsetLocation(0, getScrollY());
- return title.dispatchTouchEvent(me);
- }
- }
- // this is our touch, offset and process
- me.offsetLocation(0, -titleHeight);
- return super.dispatchTouchEvent(me);
- }
-
- /**
- * @return visible height of title (may return negative values)
- */
- private int visibleTitleHeight(){
- return titleHeight-getScrollY();
- }
-
- @Override
- protected void onScrollChanged(int l, int t, int oldl, int oldt){
- super.onScrollChanged(l, t, oldl, oldt);
- View title = getChildAt(0);
- if(title!=null) // undo horizontal scroll, so that title scrolls only vertically
- title.offsetLeftAndRight(l - title.getLeft());
- }
-
- @Override
- protected void onDraw(Canvas c){
-
- c.save();
- int tH = visibleTitleHeight();
- if(tH>0) {
- // clip so that it doesn't clear background under title bar
- int sx = getScrollX(), sy = getScrollY();
- c.clipRect(sx, sy+tH, sx+getWidth(), sy+getHeight());
- }
- c.translate(0, titleHeight);
- super.onDraw(c);
- c.restore();
- }
+package org.fox.ttrss; + +// http://www.techques.com/question/1-9718245/Webview-in-Scrollview + +import android.content.Context; +import android.graphics.Canvas; +import android.util.AttributeSet; +import android.view.MotionEvent; +import android.view.View; +import android.webkit.WebView; + +public class TitleWebView extends WebView{ + + public TitleWebView(Context context, AttributeSet attrs){ + super(context, attrs); + } + + private int titleHeight; + + @Override + protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){ + super.onMeasure(widthMeasureSpec, heightMeasureSpec); + // determine height of title bar + View title = getChildAt(0); + titleHeight = title==null ? 0 : title.getMeasuredHeight(); + } + + @Override + public boolean onInterceptTouchEvent(MotionEvent ev){ + return true; // don't pass our touch events to children (title bar), we send these in dispatchTouchEvent + } + + private boolean touchInTitleBar; + @Override + public boolean dispatchTouchEvent(MotionEvent me){ + + boolean wasInTitle = false; + switch(me.getActionMasked()){ + case MotionEvent.ACTION_DOWN: + touchInTitleBar = (me.getY() <= visibleTitleHeight()); + break; + + case MotionEvent.ACTION_UP: + case MotionEvent.ACTION_CANCEL: + wasInTitle = touchInTitleBar; + touchInTitleBar = false; + break; + } + if(touchInTitleBar || wasInTitle) { + View title = getChildAt(0); + if(title!=null) { + // this touch belongs to title bar, dispatch it here + me.offsetLocation(0, getScrollY()); + return title.dispatchTouchEvent(me); + } + } + // this is our touch, offset and process + me.offsetLocation(0, -titleHeight); + return super.dispatchTouchEvent(me); + } + + /** + * @return visible height of title (may return negative values) + */ + private int visibleTitleHeight(){ + return titleHeight-getScrollY(); + } + + @Override + protected void onScrollChanged(int l, int t, int oldl, int oldt){ + super.onScrollChanged(l, t, oldl, oldt); + View title = getChildAt(0); + if(title!=null) // undo horizontal scroll, so that title scrolls only vertically + title.offsetLeftAndRight(l - title.getLeft()); + } + + @Override + protected void onDraw(Canvas c){ + + c.save(); + int tH = visibleTitleHeight(); + if(tH>0) { + // clip so that it doesn't clear background under title bar + int sx = getScrollX(), sy = getScrollY(); + c.clipRect(sx, sy+tH, sx+getWidth(), sy+getHeight()); + } + c.translate(0, titleHeight); + super.onDraw(c); + c.restore(); + } }
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