litesoft
@ 821
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// This Source Code is in the Public Domain per: http://litesoft.org/License.txt package org.litesoft.GWT.client.widgets; import org.litesoft.GWT.client.*; import org.litesoft.GWT.client.widgets.nonpublic.*; import org.litesoft.core.*; import org.litesoft.core.delayed.*; import org.litesoft.core.typeutils.*; import org.litesoft.logger.*; import com.google.gwt.user.client.*; import com.google.gwt.user.client.ui.*; public class SizeableDualImage extends AbstractSizeableComposite implements SourcesClickEvents, SourcesMouseEvents, SourcesLoadEvents { public static final String IMAGE_LOAD_ERROR = "common/images/misc/NotFound.gif"; private static final Logger LOGGER = LoggerFactory.getLogger( SizeableDualImage.class ); private MyHtmlPanel mHtmlPanel = new MyHtmlPanel( StaticSimpleIdSource.getNext() ); public SizeableDualImage( String pUrl ) { initWidget( new ConstrainingSizeableOuterLayers( mHtmlPanel, "litesoft-DualImage", true, mHtmlPanel.getInnerTD() ) ); setUrl( pUrl ); setImageSize( 100, 100 ); } public SizeableDualImage() { this( null ); } public SizeableDualImage style( String pStyleName ) { addStyleName( pStyleName ); return this; } public SizeableDualImage imageSize( int pWidthPixels, int pHeightPixels ) { setImageSize( pWidthPixels, pHeightPixels ); return this; } public void setImageSize( int pWidthPixels, int pHeightPixels ) { Integers.assertPositive( "Width", pWidthPixels ); Integers.assertPositive( "Height", pHeightPixels ); mHtmlPanel.setImageSize( pWidthPixels, pHeightPixels ); } public void setImageWidth( int pWidthPixels ) { Integers.assertPositive( "Width", pWidthPixels ); mHtmlPanel.setContainerWidth( pWidthPixels ); } public void setImageHeight( int pHeightPixels ) { Integers.assertPositive( "Height", pHeightPixels ); mHtmlPanel.setContainerHeight( pHeightPixels ); } /** * Gets the URL of the image. * * @return the image URL */ public String getUrl() { return mHtmlPanel.getHiddenImage().getUrl(); } /** * Sets the URL of the image to be displayed. * * @param pUrl the image URL */ public void setUrl( String pUrl ) { setUrl( pUrl, pUrl, null ); } public void setUrl( String pUrl, String pTitle, Command pClickCommand ) { mHtmlPanel.setUrl( pUrl, pTitle, pClickCommand ); } // proxies to FocusPanel private DelegatingClickListenerCollection mClickListeners; private DelegatingMouseListenerCollection mMouseListeners; private DelegatingLoadListenerCollection mLoadListeners; @Override public void addClickListener( ClickListener listener ) { if ( listener != null ) { if ( mClickListeners == null ) { mClickListeners = new DelegatingClickListenerCollection( this, mHtmlPanel.getDisplayImage() ); } mClickListeners.add( listener ); } } @Override public void removeClickListener( ClickListener listener ) { if ( (listener != null) && (mClickListeners != null) && // mClickListeners.remove( listener ) && mClickListeners.isEmpty() ) { mHtmlPanel.getDisplayImage().removeClickListener( mClickListeners ); mClickListeners = null; } } @Override public void addMouseListener( MouseListener listener ) { if ( listener != null ) { if ( mMouseListeners == null ) { mMouseListeners = new DelegatingMouseListenerCollection( this, mHtmlPanel.getDisplayImage() ); } mMouseListeners.add( listener ); } } @Override public void removeMouseListener( MouseListener listener ) { if ( (listener != null) && (mMouseListeners != null) && // mMouseListeners.remove( listener ) && mMouseListeners.isEmpty() ) { mHtmlPanel.getDisplayImage().removeMouseListener( mMouseListeners ); mMouseListeners = null; } } @Override public void addLoadListener( LoadListener listener ) { if ( listener != null ) { if ( mLoadListeners == null ) { mLoadListeners = new DelegatingLoadListenerCollection( this, mHtmlPanel.getDisplayImage() ); } mLoadListeners.add( listener ); } } @Override public void removeLoadListener( LoadListener listener ) { if ( (listener != null) && (mLoadListeners != null) && // mLoadListeners.remove( listener ) && mLoadListeners.isEmpty() ) { mHtmlPanel.getDisplayImage().removeLoadListener( mLoadListeners ); mLoadListeners = null; } } //****** Implementation Code Block to support delegation to AbsoluteSizeHelper public SizeableDualImage stretchable() { LLstretchable(); return this; } // private implementation @Override public void setWidth( String width ) { super.setWidth( width ); } @Override public void setHeight( String height ) { super.setHeight( height ); } public static class DelegatingLoadListenerCollection extends LoadListenerCollection implements LoadListener { @SuppressWarnings({"GwtInconsistentSerializableClass"}) private final Widget owner; /** * Constructor for {@link DelegatingLoadListenerCollection}. * * @param owner owner of listeners * @param delegatedTo source of events */ public DelegatingLoadListenerCollection( Widget owner, SourcesLoadEvents delegatedTo ) { this.owner = owner; delegatedTo.addLoadListener( this ); } @Override public void onError( Widget sender ) { fireError( owner ); } @Override public void onLoad( Widget sender ) { fireLoad( owner ); } } private static class MyHtmlPanel extends HTMLPanel implements LoadListener, ClickListener { private static final String HIDDEN_PARENT_ID_PREFIX = "DIHI_"; private static final String DISPLAY_PARENT_ID_PREFIX = "DIVI_"; private static final String TRANSPARENT_SPACER = "<img width='1' height='1' src='" + TransparentImage.URL + "'>"; private OurImage mHiddenImage = new OurImage( TransparentImage.URL ); private OurImage mDisplayImage = new OurImage( TransparentImage.URL ); private Element mInnerTD; private String mTitle = ""; private Command mClickCommand = null; private String mPendingURL = null; public MyHtmlPanel( int zUniqueID ) { super( "<table cellpadding='0' cellspacing='0' border='0'>" + // /**/"<tr>" + // /* */"<td colspan='3' class='litesoft-DualImageInnerBorder'>" + // /* */"<div id='" + HIDDEN_PARENT_ID_PREFIX + zUniqueID + "' style='height:1px; width:1px; overflow:hidden;'>" + /* */TRANSPARENT_SPACER + "<br>" + // /* */"</div>" + // /* */"</td>" + // /**/"</tr>" + // /**/"<tr>" + // /* */"<td class='litesoft-DualImageInnerBorder'>" + TRANSPARENT_SPACER + "</td>" + // /* */"<td class='litesoft-DualImageBG' align='center' valign='middle' id='" + DISPLAY_PARENT_ID_PREFIX + zUniqueID + "'></td>" + // /* */"<td class='litesoft-DualImageInnerBorder'>" + TRANSPARENT_SPACER + "</td>" + // /**/"</tr>" + // /**/"<tr>" + // /* */"<td colspan='3' class='litesoft-DualImageInnerBorder'>" + TRANSPARENT_SPACER + "</td>" + /**/"</tr>" + // "</table>" ); add( mHiddenImage, HIDDEN_PARENT_ID_PREFIX + zUniqueID ); add( mDisplayImage, DISPLAY_PARENT_ID_PREFIX + zUniqueID ); mInnerTD = DOM.getParent( mDisplayImage.getElement() ); mHiddenImage.addLoadListener( this ); mDisplayImage.addClickListener( this ); } @Override public void onClick( Widget sender ) { if ( mClickCommand != null ) { mClickCommand.execute(); } } public Element getInnerTD() { return mInnerTD; } public Image getHiddenImage() { return mHiddenImage; } public Image getDisplayImage() { return mDisplayImage; } public void setUrl( String pUrl, String pTitle, Command pClickCommand ) { if ( null != (pUrl = Strings.noEmpty( pUrl )) ) { mTitle = Strings.deNull( pTitle ); mClickCommand = pClickCommand; String zCurrentHiddenUrl = mHiddenImage.getUrl(); if ( pUrl.equals( zCurrentHiddenUrl ) ) { mDisplayImage.setTitle( mTitle ); } else if ( isAttached() ) { LLsetURL( pUrl ); } else { mPendingURL = pUrl; } } } @Override protected void onAttach() { super.onAttach(); if ( mPendingURL != null ) { String zURL = mPendingURL; mPendingURL = null; LLsetURL( zURL ); } } private void LLsetURL( String pUrl ) { LOGGER.info.log( "Loading: ", pUrl ); setLoading(); // Eliminate the "magic" width & height that IE somehow added! DOM.removeElementAttribute( mHiddenImage.getElement(), "width" ); DOM.removeElementAttribute( mHiddenImage.getElement(), "height" ); mHiddenImage.setUrl( pUrl ); } public void setImageSize( int pWidthPixels, int pHeightPixels ) { setContainerWidth( pWidthPixels ); setContainerHeight( pHeightPixels ); } private int getContainerHeight() { return DOM.getElementPropertyInt( mInnerTD, "height" ); } public void setContainerHeight( int pHeightPixels ) { DOM.setElementPropertyInt( mInnerTD, "height", pHeightPixels ); } private int getContainerWidth() { return DOM.getElementPropertyInt( mInnerTD, "width" ); } public void setContainerWidth( int pWidthPixels ) { DOM.setElementPropertyInt( mInnerTD, "width", pWidthPixels ); } @Override public void setWidth( String pWidth ) { int zNewSize = parse( "Width", pWidth ); int zCurImageSize = mDisplayImage.getWidth(); int zCurContainerSize = getContainerWidth(); if ( zNewSize != zCurContainerSize ) { if ( zNewSize < zCurImageSize ) { mDisplayImage.setWidth( zNewSize ); } setContainerWidth( zNewSize ); reScale(); } } @Override public void setHeight( String pHeight ) { int zNewSize = parse( "Height", pHeight ); int zCurImageSize = mDisplayImage.getHeight(); int zCurContainerSize = getContainerHeight(); if ( zNewSize != zCurContainerSize ) { if ( zNewSize < zCurImageSize ) { mDisplayImage.setHeight( zNewSize ); } setContainerHeight( zNewSize ); reScale(); } } private int parse( String pWhat, String pValue ) { try { return AbstractSizeableWidget.parse( pValue ); } catch ( NumberFormatException e ) { throw new IllegalArgumentException( "Attempt to set" + pWhat + "( \"" + pValue + "\" ) on " + getClass().getName() ); } } private void reScale() { if ( mLoaded ) { int zCurImageWidth = mHiddenImage.getOffsetWidth(); int zCurImageHeight = mHiddenImage.getOffsetHeight(); if ( (zCurImageHeight == 1) && (zCurImageWidth == 1) ) { LOGGER.warn.log( "Hidden Image still reporting 1x1" ); TimedRunnableManager.INSTANCE.runIn( new TimedRunnable() { @Override public Again runOnce() { reScale(); return null; } }, 50 ); } int zCurContainerWidth = getContainerWidth(); int zCurContainerHeight = getContainerHeight(); float zFactorWidth = (1.0f * zCurContainerWidth) / zCurImageWidth; float zFactorHeight = (1.0f * zCurContainerHeight) / zCurImageHeight; float zFactor = Math.min( zFactorWidth, zFactorHeight ); int zNewWidth = (int) (zFactor * zCurImageWidth); int zNewHeight = (int) (zFactor * zCurImageHeight); mDisplayImage.setWidth( zNewWidth ); mDisplayImage.setHeight( zNewHeight ); // System.out.println( "reScale:\n" + // //// Window.alert( // // mHiddenImage.getUrl() + "\n" + // // "zCurImageWidth=" + zCurImageWidth + "\n"+ // // "zCurImageHeight=" + zCurImageHeight + "\n"+ // //// "zCurContainerWidth=" + zCurContainerWidth + "\n"+ // //// "zCurContainerHeight=" + zCurContainerHeight + "\n"+ // //// "zFactorWidth=" + zFactorWidth + "\n"+ // //// "zFactorHeight=" + zFactorHeight + "\n"+ // // "zFactor=" + zFactor + "\n"+ // // "zNewWidth=" + zNewWidth + "\n"+ // // "zNewHeight=" + zNewHeight + "\n"+ // //// "mDisplayImage.getWidth()=" + mDisplayImage.getWidth() + "\n"+ // //// "mDisplayImage.getHeight()=" + mDisplayImage.getHeight() + "\n"+ // //// "mDisplayImage.getOffsetWidth()=" + mDisplayImage.getOffsetWidth() + "\n"+ // //// "mDisplayImage.getOffsetHeight()=" + mDisplayImage.getOffsetHeight() + "\n"+ // // "" ); String zHiddenUrl = mHiddenImage.getUrl(); if ( !Objects.areNonArraysEqual( zHiddenUrl, mDisplayImage.getUrl() ) ) { mDisplayImage.setUrl( zHiddenUrl ); } } } private boolean mLoaded = false; private void setLoading() { mLoaded = false; } private void setLoaded() { if ( !mLoaded ) { mLoaded = true; reScale(); mDisplayImage.setTitle( mTitle ); } } @Override public void onError( Widget sender ) { String zNotFound = "Not found: " + mHiddenImage.getUrl(); LOGGER.error.log( zNotFound ); setUrl( IMAGE_LOAD_ERROR, zNotFound, null ); } @Override public void onLoad( Widget sender ) { LOGGER.info.log( "Loaded: ", mHiddenImage.getUrl() ); setLoaded(); } } } |
Commits for litesoft/trunk/Java/GWT/Client/src/org/litesoft/GWT/client/widgets/SizeableDualImage.java
Revision | Author | Commited | Message |
---|---|---|---|
821 Diff | GeorgeS | Sun 19 Aug, 2012 00:08:41 +0000 | |
804 Diff | GeorgeS | Wed 15 Aug, 2012 12:48:51 +0000 | |
802 Diff | GeorgeS | Wed 15 Aug, 2012 04:04:47 +0000 | |
801 Diff | GeorgeS | Wed 15 Aug, 2012 03:59:02 +0000 | |
390 Diff | GeorgeS | Sun 14 Aug, 2011 19:33:48 +0000 | |
151 Diff | GeorgeS | Thu 17 Mar, 2011 04:16:22 +0000 | |
49 Diff | GeorgeS | Mon 12 Apr, 2010 02:59:10 +0000 | License Text |
23 Diff | GeorgeS | Wed 24 Feb, 2010 00:34:32 +0000 | |
2 | GeorgeS | Sun 07 Feb, 2010 12:50:58 +0000 |