001package votorola.s.gwt.scene.dum; // Copyright 2010, Michael Allan. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Votorola Software"), to deal in the Votorola Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicence, and/or sell copies of the Votorola Software, and to permit persons to whom the Votorola Software is furnished to do so, subject to the following conditions: The preceding copyright notice and this permission notice shall be included in all copies or substantial portions of the Votorola Software. THE VOTOROLA SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE VOTOROLA SOFTWARE OR THE USE OR OTHER DEALINGS IN THE VOTOROLA SOFTWARE. 002 003import com.google.web.bindery.event.shared.HandlerRegistration; 004import com.google.gwt.user.client.ui.*; 005import com.google.gwt.view.client.SelectionChangeEvent; 006import java.util.Arrays; 007import votorola.a.web.gwt.*; 008import votorola.s.gwt.scene.*; 009import votorola.s.gwt.scene.feed.*; 010import votorola.s.gwt.stage.poll.*; 011import votorola.g.hold.*; 012import votorola.g.web.gwt.*; 013 014 015/** A view of a dummy scene rendered as a cubic grid collapsed to a planar grid. Thus only 016 * the lateral x and y positions are visible, as though the point of view was along the 017 * z-axis (e.g. top down) where depth is imperceptible. 018 * 019 * @see <a href='http://reluk.ca/y/vw/xf/#c=DDum'>Live example of a DummySceneV 020 * (right)</a> 021 */ 022public final class DummySceneV extends Grid 023{ 024 025 026 /** Constructs a DummySceneV. 027 */ 028 public DummySceneV( DummyScene _scene ) 029 { 030 super( SIZE, SIZE ); 031 scene = _scene; 032 addStyleName( "dum-DummySceneV" ); 033 addStyleName( "plain" ); 034 } 035 036 037 038 // - W i d g e t ---------------------------------------------------------------------- 039 040 041 protected @Override void onLoad() 042 { 043 spool = new Spool1(); 044 new Scoper(); 045 new Spotlighter(); 046 047 super.onLoad(); 048 } 049 050 051 052 protected @Override void onUnload() 053 { 054 super.onUnload(); 055 056 spool.unwind(); 057 spool = null; // single use 058 } 059 060 061 062//// P r i v a t e /////////////////////////////////////////////////////////////////////// 063 064 065 /** @param ii the array in which to store row and column indeces, in that order. 066 * @return the same ii array, or a newly constructed one if it was null. 067 */ 068 private static int[] calculateCellIndeces( final DummyScene.MappedPoll poll, int[] ii ) 069 { 070 if( ii == null ) ii = new int[2]; 071 072 final float x = poll.x(); 073 final float y = 1 - poll.y(); // reflected, so origin at bottom 074 ii[0] = (int)(y * SIZE); // row 075 ii[1] = (int)(x * SIZE); // col 076 return ii; 077 } 078 079 080 private final DummyScene scene; 081 082 083 084 private static final int SIZE = 40; // the larger, the slower to layout 085 086 087 088 private Spool spool; 089 090 091 092 // ==================================================================================== 093 094 095 private final class Scoper implements ScopeChangeHandler 096 { 097 098 Scoper() 099 { 100 spool.add( new Hold() 101 { 102 final HandlerRegistration hR = scene.scoping().addHandler( Scoper.this ); 103 public void release() { hR.removeHandler(); } 104 }); 105 rescope(); // init state 106 } 107 108 109 public void onScopeChange( final ScopeChangeEvent e ) { rescope(); } 110 111 112 private void rescope() 113 { 114 final HTMLTable.CellFormatter f = getCellFormatter(); 115 int row = 0; 116 int col; 117 for( ; row < SIZE; ++row ) 118 { 119 col = 0; 120 for( ; col < SIZE; ++col ) 121 { 122 f.removeStyleName( row, col, "multi" ); 123 f.removeStyleName( row, col, "p" ); 124 } 125 } 126 127 final int[] ii = new int[2]; 128 for( final DummyScene.MappedPoll poll: scene.polls().values() ) 129 { 130 if( !scene.inScope( poll )) continue; 131 132 calculateCellIndeces( poll, ii ); 133 row = ii[0]; 134 col = ii[1]; 135 final String allNames = f.getStyleName( row, col ); 136 if( ElementX.hasClassName( allNames, "p" )) f.addStyleName( row, col, "multi" ); 137 else f.addStyleName( row, col, "p" ); 138 } 139 } 140 } 141 142 143 144 // ==================================================================================== 145 146 147 private final class Spotlighter implements ScopeChangeHandler, SelectionChangeEvent.Handler 148 { 149 150 Spotlighter() 151 { 152 spool.add( new Hold() 153 { 154 final HandlerRegistration hR = scene.scoping().addHandler( Spotlighter.this ); 155 public void release() { hR.removeHandler(); } 156 }); 157 spool.add( new Hold() 158 { 159 final HandlerRegistration hR = 160 Scenes.i().biteSelection().addSelectionChangeHandler( Spotlighter.this ); 161 public void release() { hR.removeHandler(); } 162 }); 163 respotlight(); // init state 164 } 165 166 167 private int[] iiLast; 168 169 170 public void onScopeChange( final ScopeChangeEvent e ) { respotlight(); } 171 172 173 public void onSelectionChange( SelectionChangeEvent e ) { respotlight(); } 174 175 176 private void respotlight() 177 { 178 int[] ii = null; // thus far 179 final BiteJS bite = Scenes.i().biteSelection().getSelectedObject(); 180 if( bite != null ) 181 { 182 final PollJS poll = bite.poll(); 183 if( poll != null ) 184 { 185 final String pollName = poll.name(); 186 if( pollName != null ) 187 { 188 final DummyScene.MappedPoll pollM = scene.polls().get( pollName ); 189 if( pollM != null && scene.inScope( pollM )) 190 { 191 ii = calculateCellIndeces( pollM, ii ); 192 } 193 } 194 } 195 } 196 197 if( Arrays.equals( ii, iiLast )) return; 198 199 final HTMLTable.CellFormatter f = getCellFormatter(); 200 if( iiLast != null ) f.removeStyleName( iiLast[0], iiLast[1], "spotlighted" ); 201 202 iiLast = ii; 203 if( ii != null ) f.addStyleName( ii[0], ii[1], "spotlighted" ); 204 } 205 } 206 207 208}