Dragengine.Gui.Viewport Class Reference

Display small view of a widget larger than the viewport. More...

Inheritance diagram for Dragengine.Gui.Viewport:

Public Member Functions
void	doLayout ()
	Lay out widgets using the set layout.
Widget	getContent ()
	Content widget or null if not existing.
RangeModel	getHorizontalRangeModel ()
	Horizontal range model for viewports to synchronize the horizontal scrollbar.
RangeModel	getVerticalRangeModel ()
	Vertical range model for viewports to synchronize the vertical scrollbar.
void	layoutParent ()
Viewport	new ()
	Create viewport center aligning content widget.
Viewport	new (Widget content)
	Create viewport with content widget.
Viewport	new (Widget content, Layout layout)
	Create viewport with content widget and layout.
void	rangeChanged (RangeModel rangeModel)
	Range properties changed.
void	setContent (Widget content)
	Set content widget or null to remove it.
void	updateContentPositionX ()
	Update content X position.
void	updateContentPositionY ()
	Update content Y position.
void	valueChanged (RangeModel rangeModel)
	Value changed.
Public Member Functions inherited from Dragengine.Gui.Panel
Panel	new (int x, int y, int width, int height)
	Create panel.
Panel	new (Layout layout)
	Create panel with layout.
Panel	new (Layout layout, Block blockAddContent)
	Create panel with layout calling block to add content.
Public Member Functions inherited from Dragengine.Gui.Container
void	addWidget (Widget widget)
void	addWidget (Widget widget, Object settings)
bool	allowsChildGrabFocus ()
Widget	findFocusableWidget ()
Widget	findLastFocusableWidget ()
Widget	findWidget (Block ablock)
	Find widget using block or null if not found.
int	getContainerHeight ()
Point	getContainerSize ()
int	getContainerWidth ()
bool	getHasBlockedDoLayout ()
	doLayout calls happened during runWhileBlockingLayout.
Layout	getLayout ()
Point	getMinimumSize ()
Point	getMinimumSizeForHeight (int height)
	Minimum size of widget using reference widget height and variable width.
Point	getMinimumSizeForWidth (int width)
	Minimum size of widget using reference widget width and variable height.
bool	getStateChangeNotifyChildren ()
	Notify children if state changed.
Widget	getWidget (int index)
Widget	getWidgetAt (Point position)
	Widget at coordinates or null if not found.
int	getWidgetCount ()
void	giveUpFocus ()
bool	hasFocusWidget ()
	Focus widget is inside container somewhere.
bool	hasWidget (Widget widget)
int	indexOfWidget (Widget widget)
Object	injectWidget (Object injectValue, Block ablock)
	Process value visiting widgets using block.
bool	isChildVisible (Widget child)
bool	isMouseInside ()
	Mouse is hovering over this widget.
void	moveWidget (Widget widget, int newPosition)
Container	new (Point position, Point size)
Widget	nextFocusWidgetAfter (Widget widget)
	Find next widget in the focus cycle that can grab the focus.
void	onGuiThemeChanged ()
void	onPaddingChanged ()
	Padding changed.
void	onStateChanged (StateChangeEvent event)
	State changed.
Widget	prevFocusWidgetAfter (Widget widget)
	Find previous widget in the focus cycle that can grab the focus.
void	removeAllWidgets ()
	Remove and dispose all widgets.
void	removeWidget (Widget widget)
	Remove widget without disposing.
bool	requestCaptureMouse (Widget widget)
bool	requestReleaseMouse (Widget widget)
void	runWhileBlockingLayout (Block ablock)
	Run block while layouting is blocked.
void	setEnabled (bool enabled)
void	setHasBlockedDoLayout (bool hasBlockedDoLayout)
	Set if doLayout calls happened during runWhileBlockingLayout.
void	setLayout (Layout layout)
void	setMousePointer (MousePointerFactory mousePointer)
	Set mouse pointer to use.
void	setStateChangeNotifyChildren (bool notify)
	Set to notify children if state changed.
Public Member Functions inherited from Dragengine.Gui.Widget
void	addDragListener (DragListener listener)
void	addFocusListener (FocusListener listener)
	Add focus listener.
void	addGamepadListener (GamepadListener listener)
	Add gamepad listener.
void	addKeyListener (KeyListener listener)
void	addMouseListener (MouseListener listener)
void	addStateChangeListener (StateChangeListener listener)
	Add state change listener.
void	addWidgetListener (WidgetListener listener)
	Add widget listener.
bool	canGrabFullFocus ()
void	captureMouse ()
void	design ()
	Design widget using WidgetDesigner.
void	dispose ()
CanvasCreator	getBackgroundCanvasCreator ()
	Background canvas creator or null to use background color.
bool	getBlockLayoutParent ()
	Block layoutParent calls.
Border	getBorder ()
BorderSize	getBorderSize ()
RectArea	getBoundary ()
	Rectangulare boundary of the widget.
RectArea	getBoundaryWithBorder ()
	Rectangulare boundary of the widget including border.
bool	getCanFocus ()
CanvasView	getCanvasBackground ()
CanvasView	getCanvasContent ()
CanvasView	getCanvasWidget ()
Clipboard	getClipboard ()
	Clipboard or null to use parent clipboard.
ColorMatrix	getColorTransformation ()
	Color transformation.
WidgetDesigner	getDesigner ()
	Designer.
String	getDesignerSelector ()
	Designer selector.
Desktop	getDesktop ()
Point	getDesktopPosition ()
	Widget position in desktop coordinates.
bool	getEnabled ()
MousePointerFactory	getFirstMousePointer ()
	First assigned mouse pointer.
Font	getFont ()
bool	getHasBlockedLayoutParent ()
	layoutParent calls happened during runWhileBlockingLayoutParent.
bool	getHasFocus ()
int	getHeight ()
	Height of widget.
Widget	getHoverWidget ()
	Widget the mouse hovers above or null.
Point	getLocalMouseLocation ()
	Parent desktop mouse location in widget coordinates.
Point	getMinimumSizeWithBorder ()
Point	getMinimumSizeWithBorderForHeight (int height)
	Minimum size of widget with border using reference height.
Point	getMinimumSizeWithBorderForWidth (int width)
	Minimum size of widget with border for reference width.
MousePointerFactory	getMousePointer ()
	Mouse pointer to use.
BorderSize	getPadding ()
	Padding.
Container	getParent ()
Point	getPosition ()
	Position of the widget.
bool	getProtectBackgroundCanvasCreator ()
	Protect custom set background canvas creator.
bool	getProtectBorder ()
	Protect custom set border.
bool	getProtectFont ()
	Protect custom set font.
bool	getProtectMinimumSize ()
	Protect custom set minimumsize.
bool	getProtectMousePointer ()
	Protect custom set mouse pointer.
bool	getProtectPadding ()
	Protect custom set padding.
bool	getProtectTextColor ()
	Protect custom set text color.
Point	getRelativePosition (Container parent)
	Widget position in parent widget coordinates.
Point	getScreenPosition ()
	Widget position in screen coordinates.
RectArea	getScreenRectArea ()
Point	getSetMinimumSize ()
Point	getSize ()
	Size of the widget.
Color	getTextColor ()
	Text color.
String	getTitle ()
	Widget title.
Object	getToolTip ()
	Tooltip or null.
float	getTotalTransparency ()
TexMatrix2	getTransformation ()
float	getTransparency ()
bool	getVisible ()
int	getWidth ()
	Width of widget.
Window	getWindow ()
Point	getWindowPosition ()
	Widget position in window coordinates.
int	getX ()
	X position of widget.
int	getY ()
	Y position of widget.
void	grabFocus ()
bool	hasParent (Container container)
bool	isDesignerSet ()
	Custom designer is set.
bool	isFullEnabled ()
	Widget and all parent widgets are enabled.
bool	isMinimumSizeSet ()
bool	isPointInside (Point position)
bool	isTransformationSet ()
void	layoutParentIfBlocked ()
	Calls layoutParent if getHasBlockedLayoutParent() is true.
Widget	nextFocusWidget ()
	Find next widget in the focus cycle that can grab the focus.
void	notifyBorderParametersChanged ()
void	onDesignerChanged ()
	Designer changed.
void	onDesignerSelectorChanged ()
	Designer selector changed.
void	onDispose (WidgetEvent event)
	Window is disposing.
void	onFocusLost (FocusEvent event)
	Widget lost focus.
void	onFocusReceived (FocusEvent event)
	Widget received focus.
void	onFrameUpdate (float elapsed)
	Do frame update.
void	onGamepadButtonPressed (GamepadEvent event)
	Gamepad button has been pressed.
void	onGamepadButtonReleased (GamepadEvent event)
	Gamepad button has been released.
void	onHidden (WidgetEvent event)
	Widget has been hidden.
void	onParentStateChanged ()
	Parent state changed.
void	onParentStateChanged (bool force)
	Parent state changed.
void	onReposition (WidgetEvent event)
	Position changed.
void	onResize (WidgetEvent event)
	Size changed.
void	onSetFont ()
void	onSetTextColor ()
	Text color changed.
void	onShown (WidgetEvent event)
	Widget has been shown.
void	onTranslationChanged ()
	Translation manager or active language pack changed.
void	popdownVirtualKeyboard ()
	Popdown virtual keyboard if Desktop has one assigned.
void	popupVirtualKeyboard ()
	Popup virtual keyboard if Desktop has one assigned.
Widget	prevFocusWidget ()
	Find previous widget in the focus cycle that can grab the focus.
void	processEvent (Event event)
void	releaseMouse ()
void	removeDragListener (DragListener listener)
void	removeFocusListener (FocusListener listener)
	Remove focus listener.
void	removeGamepadListener (GamepadListener listener)
	Remove gamepad listener.
void	removeKeyListener (KeyListener listener)
void	removeMouseListener (MouseListener listener)
void	removeStateChangeListener (StateChangeListener listener)
	Remove state change listener.
void	removeWidgetListener (WidgetListener listener)
	Remove widget listener.
void	requestGrabFocus (Widget widget)
void	runWhileBlockingLayoutParent (Block ablock)
	Run block while layouting is blocked.
void	safeDispose ()
	Safely dispose of widget.
void	sendEvent (Event event)
void	sendEventToListeners (Event event, bool sendToParent)
	Send event to all appropriate listeners for events of its kind.
void	setBackgroundCanvasCreator (CanvasCreator creator)
	Set background canvas creator or null to use background color.
void	setBlockLayoutParent (bool blockLayoutParent)
	Set block layoutParent calls.
void	setBorder (Border border)
void	setCanFocus (bool canFocus)
void	setClipboard (Clipboard clipboard)
	Set clipboard or null to use parent clipboard.
void	setColorTransformation (ColorMatrix transformation)
	Set color transformation.
void	setDesigner (WidgetDesigner designer)
	Set designer.
void	setDesignerSelector (String selector)
	Set designer selector.
void	setFont (Font font)
void	setHasBlockedLayoutParent (bool hasBlockedLayoutParent)
	Set if layoutParent calls happened during runWhileBlockingLayoutParent.
void	setHasFocus (bool hasFocus)
void	setHeight (int height)
	Set height of widget.
void	setMinimumSize (Point size)
void	setPadding (BorderSize padding)
	Set padding.
void	setParent (Container parent)
void	setPosition (Point position)
	Set position of widget.
void	setProtectBackgroundCanvasCreator (bool protect)
	Set protect custom set background canvas creator.
void	setProtectBorder (bool protect)
	Set protect custom set border.
void	setProtectFont (bool protect)
	Set protect custom set font.
void	setProtectMinimumSize (bool protect)
	Set protect custom set minimumsize.
void	setProtectMousePointer (bool protect)
	Set protect custom set mouse pointer.
void	setProtectPadding (bool protect)
	Set protect custom set padding.
void	setProtectTextColor (bool protect)
	Set protect custom set text color.
void	setSize (Point size)
	Set size of widget.
void	setTextColor (Color color)
	Set text color.
void	setTitle (String title)
	Set widget title.
void	setToolTip (Object toolTip)
	Set tooltip or null.
void	setTransformation (TexMatrix2 transformation)
void	setTransparency (float transparency)
void	setVisible (bool visible)
void	setWidth (int width)
	Set width of widget.
void	setX (int x)
	Set X position of widget.
void	setY (int y)
	Set Y Position of widget.
void	startFrameUpdater ()
	Start frame updater if not running.
void	stopFrameUpdater ()
	Stop frame updater if running.

Additional Inherited Members
Public Attributes inherited from Dragengine.Gui.Container
bool	pBlockLayout
Point	pCachedMinSize
int	pCachedMinSizeForHeightHeight
Point	pCachedMinSizeForHeightSize
Point	pCachedMinSizeForWidthSize
int	pCachedMinSizeForWidthWidth
Array	pChildren
bool	pHasBlockedDoLayout
Layout	pLayout
bool	pStateChangeNotifyChildren
Public Attributes inherited from Dragengine.Gui.Widget
CanvasCreator	pBackgroundCanvasCreator
bool	pBlockLayoutParent
Border	pBorder
bool	pCanFocus
CanvasView	pCanvasBackground
CanvasView	pCanvasContent
CanvasView	pCanvasWidget
Clipboard	pClipboard
WidgetDesigner	pDesigner
String	pDesignerSelector
Array	pDragListeners
bool	pEnabled
Array	pFocusListeners
Font	pFont
FrameUpdater	pFrameUpdater
Array	pGamepadListeners
bool	pHasBlockedLayoutParent
bool	pHasFocus
bool	pIsDesignerSet
Array	pKeyListeners
Point	pMinSize
Array	pMouseListeners
MousePointerFactory	pMousePointer
BorderSize	pPadding
Container	pParent
Point	pPosition
bool	pProtectBackgroundCanvasCreator
bool	pProtectBorder
bool	pProtectFont
bool	pProtectMinimumSize
bool	pProtectMousePointer
bool	pProtectPadding
bool	pProtectTextColor
RepeatKeyEventTimer	pRepeatEventTimer
Point	pSize
Array	pStateChangeListeners
Color	pTextColor
GuiTheme	pTheme
String	pThemeSelector
String	pTitle
Object	pToolTip
TexMatrix2	pTransformation
TranslationManager	pTranslationManager
float	pTransparency
bool	pVisible
Array	pWidgetListeners
Protected Member Functions inherited from Dragengine.Gui.Widget
WidgetDesigner	getDesignerFromTheme ()
	Get designer from gui theme.
void	updateCanvasBackground ()
	Update background canvas content.
void	updateCanvasGeometry ()
	Update canvas position and size.

Detailed Description

Display small view of a widget larger than the viewport.

Typical use is like this:

ScrollPanel.new(Viewport.new(widget)).

This shows scroll bars if widget is larger than the viewport and aligns it to the left and top side. For different alignment set a layout. The layout is only overwritten vertically or horizontally if the widget is larger than the viewport. For example to center the widget if smaller than the viewport use

viewport.setLayout(CentrizedBoxLayout.new(LayoutAxis.y))

Another typical situation is to stretch the widget to the viewport if smaller. This can be done like this:

viewport.setLayout(BoxLayout.new(LayoutAxis.y))

The default layout is FixedMinimalLayout. Other layouts are possible.

Member Function Documentation

doLayout()

void Dragengine.Gui.Viewport.doLayout

(

)

Lay out widgets using the set layout.

This call is protected against loops caused by layoutParent called from inside a widget being laid out. Furthermore changes to the minimum, preferred and maximum size are tracked to call layoutParent() only if required.

Reimplemented from Dragengine.Gui.Container.

getContent()

Widget Dragengine.Gui.Viewport.getContent

(

)

Content widget or null if not existing.

getHorizontalRangeModel()

RangeModel Dragengine.Gui.Viewport.getHorizontalRangeModel

(

)

Horizontal range model for viewports to synchronize the horizontal scrollbar.

If this widget has no reasonable horizontal range model it should return null.

Reimplemented from Dragengine.Gui.Widget.

getVerticalRangeModel()

RangeModel Dragengine.Gui.Viewport.getVerticalRangeModel

(

)

Vertical range model for viewports to synchronize the vertical scrollbar.

If this widget has no reasonable vertical range model it should return null.

Reimplemented from Dragengine.Gui.Widget.

layoutParent()

void Dragengine.Gui.Viewport.layoutParent

(

)

Layout parent if existing. Modified version to respect layout blocking.

Reimplemented from Dragengine.Gui.Container.

new() [1/3]

Viewport Dragengine.Gui.Viewport.new

(

)

Create viewport center aligning content widget.

Reimplemented from Dragengine.Gui.Panel.

new() [2/3]

Viewport Dragengine.Gui.Viewport.new

(

Widget

content

)

Create viewport with content widget.

new() [3/3]

Viewport Dragengine.Gui.Viewport.new	(	Widget	content,
		Layout	layout
	)

Create viewport with content widget and layout.

rangeChanged()

void Dragengine.Gui.Viewport.rangeChanged

(

RangeModel

rangeModel

)

Range properties changed.

Implements Dragengine.Gui.RangeModelListener.

setContent()

void Dragengine.Gui.Viewport.setContent

(

Widget

content

)

Set content widget or null to remove it.

updateContentPositionX()

void Dragengine.Gui.Viewport.updateContentPositionX

(

)

Update content X position.

Adjusts the position only if larger than the viewport size. Otherwise the layout position is kept.

updateContentPositionY()

void Dragengine.Gui.Viewport.updateContentPositionY

(

)

Update content Y position.

Adjusts the position only if larger than the viewport size. Otherwise the layout position is kept.

valueChanged()

void Dragengine.Gui.Viewport.valueChanged

(

RangeModel

rangeModel

)

Value changed.

Implements Dragengine.Gui.RangeModelListener.

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The documentation for this class was generated from the following file:

• Viewport.ds