Simple widget used for testing concepts. More...

#include <dw_simple_container.hh>

Classes
class	SimpleContainerIterator

Public Member Functions
	SimpleContainer ()

	~SimpleContainer ()

void	draw (core::View view, core::Rectangle area, core::DrawingContext *context)
	Area is given in widget coordinates.

core::Iterator *	iterator (core::Content::Type mask, bool atEnd)
	Return an iterator for this widget.

void	removeChild (Widget *child)

void	setChild (core::Widget *child)

Public Member Functions inherited from dw::core::Widget
void	setDeleteCallback (DW_Callback_t func, void *data)

	Widget ()

	~Widget ()

bool	resizeQueued ()

bool	extremesQueued ()

bool	needsResize ()

bool	needsAllocate ()

bool	allocateQueued ()

bool	extremesChanged ()

bool	wasAllocated ()

void	setParent (Widget *parent)

void	setQuasiParent (Widget *quasiParent)

void	setGenerator (Widget *generator)

style::Style *	getStyle ()

Allocation *	getAllocation ()

bool	inAllocation (int x, int y)

int	boxOffsetX ()

int	boxRestWidth ()

int	boxDiffWidth ()

int	boxOffsetY ()

int	boxRestHeight ()

int	boxDiffHeight ()

virtual int	numSizeRequestReferences ()
	See Sizes of Dillo Widgets (or Size requisitions depending on positions).

virtual Widget *	sizeRequestReference (int index)
	See Sizes of Dillo Widgets (or Size requisitions depending on positions).

virtual int	numGetExtremesReferences ()
	See Sizes of Dillo Widgets (or Size requisitions depending on positions).

virtual Widget *	getExtremesReference (int index)
	See Sizes of Dillo Widgets (or Size requisitions depending on positions).

void	sizeRequest (Requisition requisition, int numPos=0, Widget references=NULL, int x=NULL, int *y=NULL)
	This method is a wrapper for Widget::sizeRequestImpl(); it calls the latter only when needed.

void	getExtremes (Extremes extremes, int numPos=0, Widget references=NULL, int x=NULL, int *y=NULL)
	Wrapper for Widget::getExtremesImpl().

void	sizeAllocate (Allocation *allocation)
	Wrapper for Widget::sizeAllocateImpl, calls the latter only when needed.

void	calcExtraSpace (int numPos, Widget *references, int x, int *y)
	Calculates dw::core::Widget::extraSpace.

int	getAvailWidth (bool forceValue)
	Return available width including margin/border/padding (extraSpace?), not only the content width.

int	getAvailHeight (bool forceValue)
	Return available height including margin/border/padding (extraSpace?), not only the content height.

virtual bool	getAdjustMinWidth ()

void	correctRequisition (Requisition requisition, void(splitHeightFun)(int, int , int ), bool allowDecreaseWidth, bool allowDecreaseHeight)

void	correctExtremes (Extremes *extremes, bool useAdjustmentWidth)

int	calcWidth (style::Length cssValue, int refWidth, Widget *refWidget, int limitMinWidth, bool forceValue)
	Computes a width value in pixels from cssValue.

void	calcFinalWidth (style::Style style, int refWidth, Widget refWidget, int limitMinWidth, bool forceValue, int *finalWidth)
	Computes the final width if posible and constraints it by min-width and max-width.

int	calcHeight (style::Length cssValue, bool usePercentage, int refHeight, Widget *refWidget, bool forceValue)

virtual int	applyPerWidth (int containerWidth, style::Length perWidth)

virtual int	applyPerHeight (int containerHeight, style::Length perHeight)

int	getMinWidth (Extremes *extremes, bool forceValue)
	Used to evaluate Widget::adjustMinWidth.

virtual bool	isBlockLevel ()

virtual bool	isPossibleContainer ()

void	containerSizeChanged ()

bool	intersects (Widget refWidget, Rectangle area, Rectangle *intersection)
	Calculates the intersection of the visible allocation (i.

void	drawInterruption (View view, Rectangle area, DrawingContext *context)
	See Interrupted drawing for details.

virtual Widget *	getWidgetAtPoint (int x, int y, GettingWidgetAtPointContext *context)

Widget *	getWidgetAtPointInterrupted (int x, int y, GettingWidgetAtPointContext *context)

bool	buttonPress (EventButton *event)

bool	buttonRelease (EventButton *event)

bool	motionNotify (EventMotion *event)

void	enterNotify (EventCrossing *event)

void	leaveNotify (EventCrossing *event)

virtual void	setStyle (style::Style *style)
	Change the style of a widget.

void	setBgColor (style::Color *bgColor)
	Set the background "behind" the widget, if it is not the background of the parent widget, e.g.

style::Color *	getBgColor ()
	Get the actual background of a widget.

style::Color *	getFgColor ()
	Get the actual foreground color of a widget.

void	drawBox (View view, style::Style style, Rectangle *area, int x, int y, int width, int height, bool inverse)
	Draw borders and background of a widget part, which allocation is given by (x, y, width, height) (widget coordinates).

void	drawWidgetBox (View view, Rectangle area, bool inverse)
	Draw borders and background of a widget.

void	drawSelected (View view, Rectangle area)

void	setButtonSensitive (bool buttonSensitive)

bool	isButtonSensitive ()

Widget *	getParent ()

Widget *	getContainer ()

Widget *	getTopLevel ()
	Get the widget at the root of the tree, this widget is part from.

int	getLevel ()
	Get the level of the widget within the tree.

int	getGeneratorLevel ()
	Get the level of the widget within the tree, regarting the generators, not the parents.

Widget *	getNearestCommonAncestor (Widget *otherWidget)
	Get the widget with the highest level, which is a direct ancestor of widget1 and widget2.

WidgetReference *	getWidgetReference ()

void	setWidgetReference (WidgetReference *widgetReference)

Widget *	getGenerator ()

Layout *	getLayout ()

void	scrollTo (HPosition hpos, VPosition vpos, int x, int y, int width, int height)

void	getMarginArea (int xMar, int yMar, int widthMar, int heightMar)

void	getBorderArea (int xBor, int yBor, int widthBor, int heightBor)

void	getPaddingArea (int xPad, int yPad, int widthPad, int heightPad)
	Return the padding area (content plus padding).

virtual void	removeChild (Widget *child)

Public Member Functions inherited from lout::identity::IdentifiableObject
	IdentifiableObject ()

void	intoStringBuffer (misc::StringBuffer *sb)
	Store a textual representation of the object in a misc::StringBuffer.

int	getClassId ()
	Returns the class identifier.

const char *	getClassName ()
	Return the name, under which the class of this object was registered.

bool	instanceOf (int otherClassId)
	Returns, whether this class is an instance of the class, given by otherClassId, or of a sub class of this class.

Public Member Functions inherited from lout::object::Object
virtual	~Object ()
	The destructor is defined as virtual (but not abstract), so that destruction of Object's works properly.

virtual bool	equals (Object *other)
	Returns, whether two objects are equal.

virtual int	hashValue ()
	Return a hash value for the object.

virtual Object *	clone ()
	Return an exact copy of the object.

const char *	toString ()
	Use object::Object::intoStringBuffer to return a textual representation of the object.

virtual size_t	sizeOf ()
	Return the number of bytes, this object totally uses.

Static Public Attributes
static int	CLASS_ID = -1

Static Public Attributes inherited from dw::core::Widget
static int	CLASS_ID = -1

Protected Member Functions
void	sizeRequestSimpl (core::Requisition *requisition)
	Simple variant, to be implemented by widgets with sizes not depending on positions.

void	getExtremesSimpl (core::Extremes *extremes)
	Simple variant, to be implemented by widgets with extremes not depending on positions.

void	sizeAllocateImpl (core::Allocation *allocation)
	See Sizes of Dillo Widgets.

Protected Member Functions inherited from dw::core::Widget
int	getHeight ()

int	getContentWidth ()

int	getContentHeight ()

StackingContextMgr *	getNextStackingContextMgr ()

void	printFlag (Flags f)

void	setFlags (Flags f)

void	unsetFlags (Flags f)

void	queueDraw ()

void	queueDrawArea (int x, int y, int width, int height)

void	queueResize (int ref, bool extremesChanged)

virtual void	sizeRequestImpl (Requisition requisition, int numPos, Widget references, int x, int *y)
	See Sizes of Dillo Widgets.

virtual void	getExtremesImpl (Extremes extremes, int numPos, Widget references, int x, int *y)
	See Sizes of Dillo Widgets.

virtual void	calcExtraSpaceImpl (int numPos, Widget *references, int x, int *y)
	The actual implementation for calculating dw::core::Widget::extraSpace.

virtual void	resizeDrawImpl ()
	Called after sizeAllocateImpl() to redraw necessary areas.

virtual void	markSizeChange (int ref)
	See Sizes of Dillo Widgets.

virtual void	markExtremesChange (int ref)
	See Sizes of Dillo Widgets.

virtual int	getAvailWidthOfChild (Widget *child, bool forceValue)
	Computes the content width available of a child widget.

virtual int	getAvailHeightOfChild (Widget *child, bool forceValue)

virtual void	correctRequisitionOfChild (Widget child, Requisition requisition, void(splitHeightFun)(int, int , int *), bool allowDecreaseWidth, bool allowDecreaseHeight)

void	correctRequisitionViewport (Requisition requisition, void(splitHeightFun)(int, int , int ), bool allowDecreaseWidth, bool allowDecreaseHeight)
	Corrects a requisition to fit in the viewport.

void	correctReqWidthOfChild (Widget child, Requisition requisition, bool allowDecreaseWidth)
	Correct a child requisition to fit the parent.

void	correctReqHeightOfChild (Widget child, Requisition requisition, void(splitHeightFun)(int, int , int *), bool allowDecreaseHeight)

bool	correctReqAspectRatio (int pass, Widget child, Requisition requisition, bool allowDecreaseWidth, bool allowDecreaseHeight, void(splitHeightFun)(int, int , int *))
	Correct a child requisition aspect ratio if needed.

virtual void	correctExtremesOfChild (Widget child, Extremes extremes, bool useAdjustmentWidth)

virtual void	containerSizeChangedForChildren ()

virtual bool	affectedByContainerSizeChange ()

virtual bool	affectsSizeChangeContainerChild (Widget *child)

virtual bool	usesAvailWidth ()
	Must be implemengted by a method returning true, when getAvailWidth() is called.

virtual bool	usesAvailHeight ()
	Must be implemengted by a method returning true, when getAvailHeight() is called.

virtual void	notifySetAsTopLevel ()
	This method is called after a widget has been set as the top of a widget tree.

virtual void	notifySetParent ()
	This method is called after a widget has been added to a parent.

virtual bool	buttonPressImpl (EventButton *event)

virtual bool	buttonReleaseImpl (EventButton *event)

virtual bool	motionNotifyImpl (EventMotion *event)

virtual void	enterNotifyImpl (EventCrossing *event)

virtual void	leaveNotifyImpl (EventCrossing *event)

char *	addAnchor (const char *name)

char *	addAnchor (const char *name, int y)

void	changeAnchor (char *name, int y)

void	removeAnchor (char *name)

void	setCursor (style::Cursor cursor)

bool	selectionHandleEvent (SelectionState::EventType eventType, Iterator it, int charPos, int linkNo, MousePositionEvent event)

Protected Member Functions inherited from lout::identity::IdentifiableObject
void	registerName (const char className, int classId)
	This method must be called in the constructor for the sub class.

Private Attributes
Widget *	child

Additional Inherited Members
Static Public Member Functions inherited from dw::core::Widget
static void	setAdjustMinWidth (bool adjustMinWidth)

static void	adjustHeight (int *height, bool allowDecreaseHeight, int ascent, int descent)

Public Attributes inherited from dw::core::Widget
int	parentRef
	This value is defined by the parent widget, and used for incremential resizing.

Protected Types inherited from dw::core::Widget
enum	Flags { RESIZE_QUEUED = 1 << 0 , EXTREMES_QUEUED = 1 << 1 , NEEDS_RESIZE = 1 << 2 , NEEDS_ALLOCATE = 1 << 3 , ALLOCATE_QUEUED = 1 << 4 , EXTREMES_CHANGED = 1 << 5 , WAS_ALLOCATED = 1 << 6 }

Protected Attributes inherited from dw::core::Widget
WidgetImgRenderer *	widgetImgRenderer

Allocation	allocation
	The current allocation: size and position, always relative to the canvas.

float	ratio
	Preferred aspect ratio of the widget.

Layout *	layout

style::Box	extraSpace
	Space around the margin box.

StackingContextMgr *	stackingContextMgr
	Set iff this widget constitutes a stacking context, as defined by CSS.

Widget *	stackingContextWidget
	The bottom-most ancestor (or this) for which stackingContextMgr is set.

Detailed Description

Simple widget used for testing concepts.

Definition at line 11 of file dw_simple_container.hh.

Constructor & Destructor Documentation

◆ SimpleContainer()

dw::SimpleContainer::SimpleContainer ( )

Definition at line 151 of file dw_simple_container.cc.

References child, CLASS_ID, and lout::identity::IdentifiableObject::registerName().

◆ ~SimpleContainer()

dw::SimpleContainer::~SimpleContainer ( )

Definition at line 157 of file dw_simple_container.cc.

References child.

Member Function Documentation

◆ draw()

void dw::SimpleContainer::draw	(	core::View *	view,
		core::Rectangle *	area,
		core::DrawingContext *	context
	)

virtual

Area is given in widget coordinates.

Implements dw::core::Widget.

Definition at line 211 of file dw_simple_container.cc.

References child, dw::core::Widget::draw(), dw::core::Widget::drawWidgetBox(), and dw::core::Widget::intersects().

◆ getExtremesSimpl()

void dw::SimpleContainer::getExtremesSimpl ( core::Extremes * extremes )

protectedvirtual

Simple variant, to be implemented by widgets with extremes not depending on positions.

Reimplemented from dw::core::Widget.

Definition at line 179 of file dw_simple_container.cc.

References dw::core::Extremes::adjustmentWidth, dw::core::Widget::boxDiffWidth(), child, dw::core::Widget::correctExtremes(), dw::core::Widget::extremes, dw::core::Widget::getExtremes(), dw::core::Extremes::maxWidth, dw::core::Extremes::maxWidthIntrinsic, dw::core::Extremes::minWidth, and dw::core::Extremes::minWidthIntrinsic.

◆ iterator()

Iterator * dw::SimpleContainer::iterator	(	core::Content::Type	mask,
		bool	atEnd
	)

virtual

Return an iterator for this widget.

mask can narrow the types returned by the iterator, this can enhance performance quite much, e.g. when only searching for child widgets.

With atEnd == false, the iterator starts before the beginning, i.e. the first call of dw::core::Iterator::next will let the iterator point on the first piece of contents. Likewise, With atEnd == true, the iterator starts after the last piece of contents, call dw::core::Iterator::prev in this case.

Implements dw::core::Widget.

Definition at line 220 of file dw_simple_container.cc.