Package org.apache.hop.ui.hopgui.perspective.execution

Class DragViewZoomBase

java.lang.Object

org.eclipse.swt.widgets.Widget

org.eclipse.swt.widgets.Control

org.eclipse.swt.widgets.Scrollable

org.eclipse.swt.widgets.Composite

org.apache.hop.ui.hopgui.perspective.execution.DragViewZoomBase

All Implemented Interfaces:

org.eclipse.swt.graphics.Drawable

Direct Known Subclasses:

BaseExecutionViewer, HopGuiAbstractGraph

public abstract class DragViewZoomBase
extends org.eclipse.swt.widgets.Composite

Field Summary

Fields

Modifier and Type	Field	Description
protected org.eclipse.swt.widgets.Canvas	canvas
protected Rectangle	graphPort
protected float	magnification
protected Point	maximum
protected DPoint	offset
protected boolean	viewDrag
protected DPoint	viewDragBaseOffset
protected Point	viewDragStart
protected Rectangle	viewPort
protected boolean	viewPortNavigation
protected Point	viewPortStart

Fields inherited from class org.eclipse.swt.widgets.Control

view

Constructor Summary

Constructors

Constructor	Description
DragViewZoomBase(org.eclipse.swt.widgets.Composite parent, int style)

Method Summary

Modifier and Type	Method	Description
protected float	calculateCorrectedMagnification()
protected void	dragView(Point lastClick, Point moved)	Calculate the differences for the scrollbars.
protected void	dragViewPort(Point clickLocation)
protected Point	getArea()
protected void	mouseScrolled(org.eclipse.swt.events.MouseEvent mouseEvent)
abstract void	redraw()
Point	screen2real(int x, int y)
protected boolean	setupDragView(int button, boolean control, Point screenClick)	There are 2 ways to drag the view-port around.
abstract void	setZoomLabel()
void	validateOffset()
void	viewDown()
void	viewLeft()
void	viewReset()
void	viewRight()
void	viewUp()
void	zoom100Percent()
void	zoom100Percent2()
void	zoomFitToScreen()
void	zoomFitToScreen2()
void	zoomIn()
void	zoomIn2()
void	zoomOut()

Methods inherited from class org.eclipse.swt.widgets.Composite

changed, checkSubclass, computeSize, drawBackground, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, layout, redraw, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabList, toString

Methods inherited from class org.eclipse.swt.widgets.Scrollable

computeTrim, getClientArea, getHorizontalBar, getScrollbarsMode, getVerticalBar

Methods inherited from class org.eclipse.swt.widgets.Control

addControlListener, addDragDetectListener, addFocusListener, addGestureListener, addHelpListener, addKeyListener, addMenuDetectListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addMouseWheelListener, addPaintListener, addTouchListener, addTraverseListener, computeSize, dragDetect, dragDetect, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getDragDetect, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getOrientation, getParent, getRegion, getShell, getSize, getTextDirection, getToolTipText, getTouchEnabled, getVisible, internal_dispose_GC, internal_new_GC, isEnabled, isFocusControl, isReparentable, isVisible, moveAbove, moveBelow, pack, pack, print, removeControlListener, removeDragDetectListener, removeFocusListener, removeGestureListener, removeHelpListener, removeKeyListener, removeMenuDetectListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removeMouseWheelListener, removePaintListener, removeTouchListener, removeTraverseListener, requestLayout, setBackground, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setDragDetect, setEnabled, setFont, setForeground, setLayoutData, setLocation, setLocation, setMenu, setOrientation, setParent, setRedraw, setRegion, setSize, setSize, setTextDirection, setToolTipText, setTouchEnabled, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, traverse, traverse, update

Methods inherited from class org.eclipse.swt.widgets.Widget

addDisposeListener, addListener, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isAutoDirection, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, reskin, setData, setData

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.swt.graphics.Drawable

isAutoScalable

Field Detail

canvas

protected org.eclipse.swt.widgets.Canvas canvas

offset

protected DPoint offset

maximum

protected Point maximum

magnification

protected float magnification

viewPort

protected Rectangle viewPort

graphPort

protected Rectangle graphPort

viewDrag

protected boolean viewDrag

viewDragStart

protected Point viewDragStart

viewDragBaseOffset

protected DPoint viewDragBaseOffset

viewPortNavigation

protected boolean viewPortNavigation

viewPortStart

protected Point viewPortStart

Constructor Detail

DragViewZoomBase

public DragViewZoomBase(org.eclipse.swt.widgets.Composite parent,
                        int style)

Method Detail

redraw

public abstract void redraw()

Overrides:

redraw in class org.eclipse.swt.widgets.Control

screen2real

public Point screen2real(int x,
                         int y)

calculateCorrectedMagnification

protected float calculateCorrectedMagnification()

setZoomLabel

public abstract void setZoomLabel()

viewReset

@GuiKeyboardShortcut(key=16777223)
@GuiOsxKeyboardShortcut(key=16777223)
public void viewReset()

viewLeft

@GuiKeyboardShortcut(key=16777219)
@GuiOsxKeyboardShortcut(key=16777219)
public void viewLeft()

viewRight

@GuiKeyboardShortcut(key=16777220)
@GuiOsxKeyboardShortcut(key=16777220)
public void viewRight()

viewUp

@GuiKeyboardShortcut(key=16777217)
@GuiOsxKeyboardShortcut(key=16777217)
public void viewUp()

viewDown

@GuiKeyboardShortcut(key=16777218)
@GuiOsxKeyboardShortcut(key=16777218)
public void viewDown()

zoomIn

@GuiKeyboardShortcut(control=true,
                     key=43)
public void zoomIn()

zoomIn2

@GuiKeyboardShortcut(control=true,
                     key=61)
public void zoomIn2()

zoomOut

@GuiKeyboardShortcut(control=true,
                     key=45)
public void zoomOut()

zoom100Percent

@GuiKeyboardShortcut(control=true,
                     key=48)
public void zoom100Percent()

zoom100Percent2

@GuiKeyboardShortcut(control=true,
                     key=16777264)
public void zoom100Percent2()

zoomFitToScreen

@GuiKeyboardShortcut(control=true,
                     key=42)
public void zoomFitToScreen()

zoomFitToScreen2

@GuiKeyboardShortcut(control=true,
                     key=16777258)
public void zoomFitToScreen2()

setupDragView

protected boolean setupDragView(int button,
                                boolean control,
                                Point screenClick)

There are 2 ways to drag the view-port around. One way is to use the navigation rectangle at the bottom. The other way is to click-drag the background.

Parameters:

button -

control -

screenClick -

Returns:

dragViewPort

protected void dragViewPort(Point clickLocation)

validateOffset

public void validateOffset()

getArea

protected Point getArea()

dragView

protected void dragView(Point lastClick,
                        Point moved)

Calculate the differences for the scrollbars. We take the system zoom factor and current magnification into account

mouseScrolled

protected void mouseScrolled(org.eclipse.swt.events.MouseEvent mouseEvent)