ewe.ui
Class ScrollTrack

java.lang.Object
  ewe.ui.ControlBase
      ewe.ui.Control
          ewe.ui.TrackControl
              ewe.ui.ScrollTrack

All Implemented Interfaces:

CellConstants, ControlConstants, EventListener, ImageRefresher, IScroll, ITrack, TimerProc, UIConstants

public class ScrollTrack

extends TrackControl

Field Summary

protected int	actual
protected int	current
int	minThumb
protected int	options The options specified in the constructor.
protected int	scrollable
protected int	visible

Fields inherited from class ewe.ui.TrackControl

followTracking, LessThanThumb, MoreThanThumb, OnThumb, type

Fields inherited from class ewe.ui.Control

_debug, backGround, beforeRemoved, borderColor, borderStyle, borderWidth, children, columns, constraints, DoPaintMethod, dragging, dragResolution, dragTime, exitKeys, fieldTransfer, font, foreGround, haveNativePaint, height, holdDownPause, holdTick, hotKey, image, lastSelected, listeners, maxHeight, maxWidth, menuState, minHeight, minWidth, modifiers, MyClass, name, next, np, parent, penStatus, popupSound, popupSoundClip, preferredHeight, preferredWidth, prev, prompt, promptControl, rows, ss, standardBorder, standardEdge, startDragResolution, tags, tail, text, toolTip, width, x, y

Fields inherited from class ewe.ui.ControlBase

clipItems, clipObject, clipOwner, curPoint, currentPenEvent, debugControl, debugFlag, DidHoldDown, doubleBuffer, doubleClickTime, firstPress, globalDrawFlat, globalEditable, globalEnabled, globalPalmStyle, globalSmallControls, GotPenDown, PenIsOn, pressPoint, TAG_LAST_USER_DATA, TAG_USER_DATA, TAKE_FIRST_PRESS, unnamed, useNativeTextInput

Fields inherited from interface ewe.ui.IScroll

Higher, Horizontal, Lower, OPTION_INDICATOR_ONLY, PageHigher, PageLower, ScrollHigher, ScrollLower, TrackTo, Vertical

Fields inherited from interface ewe.ui.UIConstants

BDR_DOTTED, BDR_INNER, BDR_NOBORDER, BDR_OUTER, BDR_OUTLINE, BDR_RAISEDINNER, BDR_RAISEDOUTER, BDR_SUNKENINNER, BDR_SUNKENOUTER, BF_BOTTOM, BF_BOTTOMLEFT, BF_BOTTOMRIGHT, BF_BUTTON, BF_DIAGONAL, BF_DIAGONAL_ENDBOTTOMLEFT, BF_DIAGONAL_ENDBOTTOMRIGHT, BF_DIAGONAL_ENDTOPLEFT, BF_DIAGONAL_ENDTOPRIGHT, BF_EXACT, BF_FLAT, BF_LEFT, BF_MIDDLE, BF_MONO, BF_PALM, BF_RECT, BF_RIGHT, BF_SOFT, BF_SQUARE, BF_TOP, BF_TOPLEFT, BF_TOPRIGHT, EDGE_BUMP, EDGE_ETCHED, EDGE_RAISED, EDGE_SUNKEN

Fields inherited from interface ewe.ui.CellConstants

BORDER, BOTTOM, CELLFLAG, CELLMASK, CENTER, CONTROLMASK, DONTCHANGE, DONTFILL, DONTSTRETCH, EAST, FILL, FIXEDSIZE, GROW, HCENTER, HCONTRACT, HEXPAND, HFILL, HGROW, HSHRINK, HSTRETCH, INITIALLY_CLOSED, INITIALLY_MINIMIZED, INITIALLY_PREFERRED_SIZE, INSETS, LEFT, MAXIMUMSIZE, MINIMUMSIZE, NORTH, NORTHEAST, NORTHWEST, PREFERREDSIZE, RECT, RIGHT, SHRINK, SOUTH, SOUTHEAST, SOUTHWEST, SPAN, STRETCH, TEXTSIZE, TOP, VCENTER, VCONTRACT, VEXPAND, VFILL, VGROW, VSHRINK, VSTRETCH, WEST

Fields inherited from interface ewe.ui.ControlConstants

All, AlwaysEnabled, AlwaysRecalculateSizes, ByDeferredMouse, ByDeferredPen, ByFrameChange, ByKeyboard, ByMouse, ByPen, ByRequest, CalculatedSizes, Disabled, DisablePopupMenu, DisplayOnly, Down, DrawFlat, Flag, ForceResize, HasData, Invisible, KeepImage, KeepSIP, Left, MakeMenuAtLeastAsWide, Maximize, Minimize, MouseSensitive, NoFocus, NotAnEditor, NotEditable, PaintDataOnly, PaintOutsideOnly, PenTransparent, PreferredSizeOnly, Right, SendUpKeyEvents, SendUpPenEvents, ShowSIP, ShrinkToNothing, SmallControl, SpecialBackground, TakeControlEvents, TakesKeyFocus, Transparent, Up, WantDrag, WantHoldDown

Fields inherited from interface ewe.fx.ImageRefresher

KEEP_VISIBLE

Constructor Summary

ScrollTrack(int type)
Create a new ScrollTrack.

ScrollTrack(int type, int trackOptions)
Create a new ScrollTrack.

Method Summary

protected void	calculateSizes() Override this to calculate the preferred, minimum and maximum size of your control.
void	doPaint(Graphics g, Rect area)
void	generate(int what, int value)
Rect	getThumbArea()
Rect	getThumbArea(Rect r)
int	getTrackTo() This is called when the "thumb" area is moved.
void	recalculate()
void	resizeTo(int width, int height) This will change the width and height values.
void	setPositions(int vs, int ac, int cur, boolean repaint)
void	setThumbPos(int x, int y)

Methods inherited from class ewe.ui.TrackControl

dragged, generatePage, penHeld, penPressed, setFollowTracking, startDragging, stopDragging, whichArea

Methods inherited from class ewe.ui.Control

acceptsData, activate, addListener, addTimer, amOnTopFrame, calculateTextSize, cancelCut, cancelHoldDown, canEdit, chainDataChange, change, checkClipboardOperations, checkExitKey, checkMenu, checkMenuKey, checkModifiers, checkPenTransparent, clearTag, clipboardToString, clipboardTransfer, closeMenu, contains, contains, createGraphics, dataAccepted, dataBeingRemoved, dataDraggedOff, dataDraggedOver, dataDraggedOver, dataDroppedOn, dataTransferCancelled, deactivate, defaultTo, doAction, doActionKey, doBackground, doBorder, doHotKey, doMenu, dontAcceptDrop, doPaintChildren, doPaintChildren, doPaintChildren, doPaintData, doPaintData, doShowMenu, exitEntry, fillBackground, formClosing, fromClipboard, fromField, fromField, getAllDescendants, getAllSubControls, getBackground, getChildren, getChildrenBackwards, getClipboardMenu, getClipObject, getControlBuffer, getControlBuffer, getDataRect, getDataToCopy, getDataToDragAndDrop, getDim, getDisplayText, getDragAndDropContext, getFont, getFontMetrics, getFontMetrics, getForeground, getFrame, getFrameOrContainer, getGraphics, getImage, getLastSelected, getLocation, getMaximumSize, getMenu, getMinimumSize, getModifiers, getNext, getNextKeyFocus, getParent, getPasswordCharacter, getPosInFrame, getPosInParent, getPreferredSize, getPrompt, getPromptText, getRect, getRect, getServer, getSize, getSizes, getSubControls, getTag, getText, getToolTip, getWindow, gotFocus, hasModifier, hasPopupFormAttached, hasTag, inheritModifiers, isChildOf, isModal, isOnMe, isSomeonesHotKey, lostFocus, make, makeFrameTopMost, makeHot, menuIsActive, modify, modifyAll, modifyAll, notifyAction, notifyDataChange, notifyDataChange, notNative_doPaintChildren, oldButWorksDoPaintChildren, oldPaintChildren, oldPostEvent, onControlEvent, onEvent, onKeyEvent, onLabelPenEvent, onPaint, onPenEvent, paintBackground, paintChildren, penClicked, penDoubleClicked, penReleased, penRightReleased, popupBeep, popupMenuClosed, popupMenuEvent, popupMenuEvent, postEvent, recalculatePreferredSize, redisplay, refresh, removeListener, removeTimer, repaint, repaintDataNow, repaintNow, repaintNow, repaintNow, requestPaint, requestResizeTo, resetRect, restore, scrollAndRepaint, sendToListeners, set, setBorder, setCell, setClipObject, setControl, setCursor, setFixedSize, setFont, setHotKey, setHotKey, setLocation, setMaximumSize, setMenu, setMinimumSize, setPreferredSize, setPromptControl, setRect, setRect, setServer, setTag, setTags, setText, setTextSize, setToolTip, show, shown, standardOnKeyEvent, startDragAndDrop, startDragAndDrop, takeData, takeFocus, takeFromClipboard, takePromptControl, testDim, ticked, toClipboard, toField, toField, toString, toTextData, transferPenPress, transferPenPress, tryDragAndDrop, tryNext, tryStartMenu, updateData, willAcceptDrop, willShowFrame

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode

Field Detail

minThumb

public int minThumb

options

protected int options

The options specified in the constructor.

visible

protected int visible

actual

protected int actual

current

protected int current

scrollable

protected int scrollable

Constructor Detail

ScrollTrack

public ScrollTrack(int type)

Create a new ScrollTrack.

Parameters:

type - Either IScroll.Horizontal or IScroll.Vertical

ScrollTrack

public ScrollTrack(int type,
                   int trackOptions)

Create a new ScrollTrack.

Parameters:

type - Either IScroll.Horizontal or IScroll.Vertical

trackOptions - Any of the IScroll.OPTION_XXX values OR'ed together

Method Detail

doPaint

public void doPaint(Graphics g,
                    Rect area)

Overrides:

doPaint in class Control

calculateSizes

protected void calculateSizes()

Description copied from class: Control

Override this to calculate the preferred, minimum and maximum size of your control. This is only called once unless the modifier flag AlwaysRecalculateSizes is true. During the calculation you will set the variables preferredWidth, preferredHeight, etc. directly.

Overrides:

calculateSizes in class Control

getThumbArea

public Rect getThumbArea()

Specified by:

getThumbArea in class TrackControl

getThumbArea

public Rect getThumbArea(Rect r)

setThumbPos

public void setThumbPos(int x,
                        int y)

Specified by:

setThumbPos in class TrackControl

generate

public void generate(int what,
                     int value)

Overrides:

generate in class TrackControl

recalculate

public void recalculate()

resizeTo

public void resizeTo(int width,
                     int height)

Description copied from class: Control

This will change the width and height values.

Overrides:

resizeTo in class Control

setPositions

public void setPositions(int vs,
                         int ac,
                         int cur,
                         boolean repaint)

getTrackTo

public int getTrackTo()

Description copied from class: TrackControl

This is called when the "thumb" area is moved. The method setThumbPos() will be called before this is done. You are supposed to internally store the location of the thumb area and be able to generate an appropriate value for getTrackTo() for your particular application. For example you may generate a value between 0 and 100 depending on the thumb position.

Specified by:

getTrackTo in class TrackControl

Returns:

an appropriate application specific value depending on the current position of the thumb.