src/be/nikiroo/fanfix/reader/tui/TSimpleScrollableWindow.java

   1 package be.nikiroo.fanfix.reader.tui;
   2
   3 import jexer.TApplication;
   4 import jexer.THScroller;
   5 import jexer.TPanel;
   6 import jexer.TScrollableWindow;
   7 import jexer.TVScroller;
   8 import jexer.TWidget;
   9
  10 public class TSimpleScrollableWindow extends TScrollableWindow {
  11         protected TPanel mainPane;
  12         private int prevHorizontal = -1;
  13         private int prevVertical = -1;
  14
  15         public TSimpleScrollableWindow(TApplication application, String title,
  16                         int width, int height) {
  17                 this(application, title, width, height, 0, 0, 0);
  18         }
  19
  20         public TSimpleScrollableWindow(TApplication application, String title,
  21                         int width, int height, int flags) {
  22                 this(application, title, width, height, flags, 0, 0);
  23         }
  24
  25         // 0 = none (so, no scrollbar)
  26         public TSimpleScrollableWindow(TApplication application, String title,
  27                         int width, int height, int flags, int realWidth, int realHeight) {
  28                 super(application, title, width, height, flags);
  29
  30                 mainPane = new TPanel(this, 0, 0, width, 80) {
  31                         @Override
  32                         public void draw() {
  33                                 for (TWidget children : mainPane.getChildren()) {
  34                                         int y = children.getY() + children.getHeight();
  35                                         int x = children.getX() + children.getWidth();
  36                                         boolean visible = (y > getVerticalValue())
  37                                                         && (x > getHorizontalValue());
  38                                         children.setVisible(visible);
  39                                 }
  40                                 super.draw();
  41                         }
  42                 };
  43
  44                 // // TODO: test
  45                 // for (int i = 0; i < 80; i++) {
  46                 // mainPane.addLabel("ligne " + i, i, i);
  47                 // }
  48
  49                 setRealWidth(realWidth);
  50                 setRealHeight(realHeight);
  51                 placeScrollbars();
  52         }
  53
  54         /**
  55          * The main pane on which you can add other widgets for this scrollable
  56          * window.
  57          *
  58          * @return the main pane
  59          */
  60         public TPanel getMainPane() {
  61                 return mainPane;
  62         }
  63
  64         public void setRealWidth(int realWidth) {
  65                 if (realWidth <= 0) {
  66                         if (hScroller != null) {
  67                                 hScroller.remove();
  68                         }
  69                 } else {
  70                         if (hScroller == null) {
  71                                 // size/position will be fixed by placeScrollbars()
  72                                 hScroller = new THScroller(this, 0, 0, 10);
  73                         }
  74                         hScroller.setRightValue(realWidth);
  75                 }
  76
  77                 reflowData();
  78         }
  79
  80         public void setRealHeight(int realHeight) {
  81                 if (realHeight <= 0) {
  82                         if (vScroller != null) {
  83                                 vScroller.remove();
  84                         }
  85                 } else {
  86                         if (vScroller == null) {
  87                                 // size/position will be fixed by placeScrollbars()
  88                                 vScroller = new TVScroller(this, 0, 0, 10);
  89                         }
  90                         vScroller.setBottomValue(realHeight);
  91                 }
  92
  93                 reflowData();
  94         }
  95
  96         @Override
  97         public void reflowData() {
  98                 super.reflowData();
  99                 reflowData(getHorizontalValue(), getVerticalValue());
 100         }
 101
 102         protected void reflowData(int totalX, int totalY) {
 103                 super.reflowData();
 104                 mainPane.setX(-totalX);
 105                 mainPane.setY(-totalY);
 106         }
 107
 108         @Override
 109         public void draw() {
 110                 if (prevHorizontal != getHorizontalValue()
 111                                 || prevVertical != getVerticalValue()) {
 112                         prevHorizontal = getHorizontalValue();
 113                         prevVertical = getVerticalValue();
 114                         reflowData();
 115                 }
 116
 117                 super.draw();
 118         }
 119 }