#include <compoundwidget.h>

Inheritance diagram for canvascv::CompoundWidget:

Public Member Functions
virtual void	setOutlineColor (const cv::Scalar &value)
	delegate to internal Widget parts added by derived classes

virtual void	setFillColor (const cv::Scalar &value)
	delegate to internal Widget parts added by derived classes

virtual void	setSelectColor (const cv::Scalar &value)
	delegate to internal Widget parts added by derived classes

virtual void	setThickness (int value)
	delegate to internal Widget parts added by derived classes

virtual void	setLineType (int value)
	delegate to internal Widget parts added by derived classes

virtual void	setVisible (bool value)
	delegate to internal Widget parts added by derived classes

virtual const std::string &	getStatusMsg () const
	delegate to active widget or to our derived class if none active

virtual void	translate (const cv::Point &translation)
	delegate to internal Widget parts added by derived classes

void	doForAll (CBWidget cb, int recurseLevel, bool doOnSelf)
	doForAll More...

virtual const cv::Rect &	getRect ()
	Actual size the widget is occupying due to Layout manager.

Public Member Functions inherited from canvascv::Widget
	Widget (const cv::Point &pos=cv::Point(0, 0))
	constructor

virtual	~Widget ()
	virtual destructor

virtual const char *	getType () const =0
	getType is always implemented by derived to return the same static pointer per widget. More...

void	notifyOnChange (CBWidgetState cb)
	used to register for notifications on a widget More...

cv::Scalar	getOutlineColor () const
	get the outline color

cv::Scalar	getFillColor () const
	get the bg color

bool	getVisible () const
	is the widget visible

int	getThickness () const
	get line thickness to use when drawing

int	getLineType () const
	get the line type (LINE_4, LINE_8, LINE_AA)

uchar	getAlpha () const
	get the alpha value used for the widge background [0,255] => [transparent,opaque]

void	setAlpha (uchar value)
	set the alpha value used for the widge background [0,255] => [transparent,opaque]

Anchor	getLayoutAnchor () const
	getLayoutAnchor returns the anchor for using in the Layout we're in More...

void	setLayoutAnchor (const Anchor &value)
	setLayoutAnchor sets the anchor for using in the Layout we're in More...

Anchor	getFlowAnchor () const
	getFlowAnchor get internal widget alignment and direction of growth More...

void	setFlowAnchor (const Anchor &value)
	setFlowAnchor set internal widget alignment and direction of growth More...

int	getId ()
	Widgets have a unique id per instance.

void	setStatusMsg (const std::string &value)
	setStatusMsg More...

const cv::Point &	getLocation () const
	get widget position in Canvas

virtual void	setLocation (const cv::Point &value)
	set widget position in Canvas

bool	getStretchX () const
	get if the Layout we're in should stretch us in the X direction

void	setStretchX (bool value)
	set if the Layout we're in should stretch us in the X direction (and calls setStretchXToParent(false))

bool	getStretchY () const
	get if the Layout we're in should stretch us in the Y direction

void	setStretchY (bool value)
	set if the Layout we're in should stretch us in the Y direction (and calls setStretchYToParent(false))

cv::Scalar	getSelectColor () const
	get the color to use when a widget is selected

std::shared_ptr< Widget >	rmvFromLayout ()
	get rid of the widget

bool	getIsSelectable () const
	get if the widget should appear as selected when the mouse is over it

void	setIsSelectable (bool value)
	set if the widget should appear as selected when the mouse is over it

int	getForcedWidth () const
	get the forced width for this widget

void	setForcedWidth (int value)
	set the forced width for this widget (and calls setStretchX/setStretchXToParent(false))

int	getForcedHeight () const
	get the forced height for this widget

void	setForcedHeight (int value)
	set the forced height for this widget (and calls setStretchY/setStretchYToParent(false))

void	update ()
	removes 'dirty' state and invokes the derived 'recalc/recalcCompound'

bool	isRemoved () const
	returns true if the widget has no layout and false if it does

bool	getStretchXToParent () const
	get if this widget streches to parent layout width

void	setStretchXToParent (bool value)
	set if this widget streches to parent layout width (and calls setStretchX(false))

bool	getStretchYToParent () const
	get if this widget streches to parent layout height

void	setStretchYToParent (bool value)
	set if this widget streches to parent layout height (and calls setStretchY(false))

Protected Member Functions
virtual void	recalc () final
	delegate to internal Widget parts added by derived classes

virtual void	recalcCompound ()=0
	recalcCompound More...

virtual void	addWidget (const std::shared_ptr< Widget > &widget)
	adds the widget to this Layout after removing it from it's previous layout

virtual std::shared_ptr< Widget >	rmvWidget (const std::shared_ptr< Widget > &widget)
	rmvWidget More...

virtual void	renderOn (cv::Mat &dst)
	render the widget to dst More...

virtual void	drawFG (cv::Mat &dst)
	dst is the roi of the widget size and not the full image

virtual bool	isAtPos (const cv::Point &pos)
	isAtPos More...

virtual const cv::Rect &	getMinimalRect ()
	Minimal size the widget coould have occupy.

Protected Member Functions inherited from canvascv::Widget
void	setStateChangesBG ()
	widgets like buttons change bg on mouse events

void	allocateBG (const cv::Size &size)
	invokes Theme::allocateBG()

void	flatWidget ()
	delegate to Theme

void	raisedWidget ()
	delegate to Theme

void	sunkenWidget ()
	delegate to Theme

void	selectedWidget ()
	delegate to Theme

void	callDrawFG (bool preAllocateMat=true)
	helper method which delgates to drawFG for derived

bool	setDirty ()
	setDirty More...

Additional Inherited Members
Public Types inherited from canvascv::Widget
typedef std::function< void(Widget *)>	CBWidget
	signature of a callback which only gets the widget

typedef std::function< void(Widget *, State)>	CBWidgetState
	signature of a callback which gets the State

typedef std::function< void(Widget *, int)>	CBUserSelection
	signature of a callback which gets a user selection

Detailed Description

Utility class to help easy creation of complex widgets and Layout managers.

Examples:: example_add_widget.cpp.

Member Function Documentation

void canvascv::CompoundWidget::doForAll	(	CBWidget	cb,
		int	recurseLevel,
		bool	doOnSelf
	)

invoke the cb for all included widgets. This is usually not necessary since the above methods delegate to both contained widgets and self.

Parameters

cb	is what to execute on widgets
recurseLevel	is how deep to go when updating kids: -1 means all decendents at all levels 0 means only current level (doOnSelf needs to be also 'true') n>0 means up to kids at level n (1 is children, 2 is also grandchildren, etc.)
doOnSelf	is if to also invoke the cb on the first parent

virtual bool canvascv::CompoundWidget::isAtPos ( const cv::Point & pos )

protectedvirtual

Parameters

pos

Returns: true or false if at location

Reimplemented from canvascv::Widget.

virtual void canvascv::CompoundWidget::recalcCompound ( )

protectedpure virtual

Your BG size recalculation/allocation and FG drawing is done here. It is done semi automatically. Is you invoke setters in this method on your internal widgets, then make sure to update them and/or their layout

Implemented in canvascv::MsgBox, canvascv::CheckBoxes, canvascv::RadioButtons, canvascv::SelectionBox, canvascv::VerticalLayout, and canvascv::HorizontalLayout.