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guit::GDragSize Class Reference

Draggable size: Makes the Gadget interactively resizable by dragging its borders. More...

Inheritance diagram for guit::GDragSize:
guit::GSize guit::GVarProp_< GSizeValue > guit::GVarProp guit::GProp guit::GObject

Public Types

using Field = GNumPropField< GSize, float >
 Field of a GSize prop.
 
using Specif = int32_t
 Specificity of Properties.
 

Public Member Functions

GDragSizeclone (bool copy_value) const override
 Clones the prop (when applicable). More...
 
bool onAdd (Gadget *) override
 Called when the property is added to an object. More...
 
void onRemove (Gadget *) override
 Called when the property is removed from an object. More...
 
void set (GProp const &) override
 Changes value. More...
 
virtual void set (GSizeValueconst &value, bool callalways)
 Changes the value. More...
 
void set (GString const &str) override
 Changes the value from a string.
 
void blend (GProp const &a, GProp const &b, float alpha) override
 Changes value by blending the value of two props. More...
 
float w () const
 >= 0: preferred size or %, -1: auto
 
GString stringValue () const override
 Implicitely converts to value. More...
 
GVarProptoVarProp () override
 Type conversions.
 
bool isMutable () const override
 Returns true if the prop is mutable. More...
 
void setImmutable () override
 Makes the prop immutable. More...
 
void blink (GString const &msg="", GTime duration=500)
 Blinks gadget parents of the prop. More...
 
void update ()
 updates gadget parents of the prop.
 
void perform (std::function< void(Gadget &)> fun)
 performs this function on gadget parents.
 
GPropList const & props () const
 Returns callbacks and bound props.
 
virtual void removeNotifiers (void *object) override
 [Implementation] Notifies this object that it must no longer refer obj.
 
virtual void removeAll ()
 Removes callbacks and notifiers.
 
virtual float floatValue () const
 Returns the value of the prop as a float. More...
 
virtual bool boolValue () const
 Returns the value as a bool. More...
 
virtual bool isEquivalent (GProp const &other) const
 Returns true if these props are equivalent. More...
 
virtual void error (GString const &funname, GString const &message) const
 Prints an error message. More...
 
void operator delete (void *)
 delete does nothing, see GObject class.
 
void forgetSmartPointers ()
 Forgets all smart pointers pointing this object. More...
 
unsigned int useCount () const
 Returns the numbers of smart pointers referencing the object.
 
Field wField ()
 Returns a field that can be bound. More...
 
GSizeValueconst & value () const
 Returns the value.
 
bool read (GString const &filename)
 Reads the value of the prop from a file or a stream.
 
void unbind (GVarProp &sender)
 Unbinds this prop. More...
 
GString typeName () const override
 Returns the name and role of the prop's type.
 
GProptoProp () override
 Class conversions.
 
bool write (GString const &filename) const
 Writes the value of the prop on a file or a stream.
 
template<class Subclass >
Subclass * to ()
 Class conversions.
 
void ignoreSmartPointers ()
 Checks/sets whether this object can be auto-deleted by smart pointers. More...
 

Detailed Description

Draggable size: Makes the Gadget interactively resizable by dragging its borders.

Member Function Documentation

GDragSize * guit::GDragSize::clone ( bool  copy_value) const
overridevirtual

Clones the prop (when applicable).

Mutable props (i.e. deriving from GVarProp) can be cloned, otherwise this method returns null. The value is copied if copy_value is used, the default value is used otherwise.

Reimplemented from guit::GSize.

bool guit::GDragSize::onAdd ( Gadget g)
overridevirtual

Called when the property is added to an object.

note: must call addModes().

Reimplemented from guit::GSize.

void guit::GDragSize::onRemove ( Gadget g)
overridevirtual

Called when the property is removed from an object.

note: must call removeModes().

Reimplemented from guit::GSize.

void guit::GSize::set ( GProp const &  value)
overridevirtualinherited

Changes value.

Does nothing if the type of from is not convertible to the type of this prop.

See Also
set() and operator=() methods in subclasses

Implements guit::GVarProp.

virtual void guit::GVarProp_< GSizeValue >::set ( GSizeValue const &  value,
bool  callalways 
)
inlinevirtualinherited

Changes the value.

Callbacks are fired and parent gadgets updated if:

  • the value is different from the value that was previously set (using set() or operator=)
  • callalways is true, in which case they are always fired Does nothing and produces an warning if the prop is immutable (see setImmutable())
void guit::GSize::blend ( GProp const &  value1,
GProp const &  value2,
float  mix 
)
overridevirtualinherited

Changes value by blending the value of two props.

Does nothing if the type of from1 or from2 is not convertible to the type of this prop.

Reimplemented from guit::GVarProp.

Field guit::GSize::wField ( )
inlineinherited

Returns a field that can be bound.

This field can be bound to another prop or prop field by gbind() or operator <<=.

GString guit::GVarProp_< GSizeValue >::stringValue ( ) const
inlineoverridevirtualinherited

Implicitely converts to value.

Returns the value as a string.

Reimplemented from guit::GProp.

bool guit::GVarProp::isMutable ( ) const
inlineoverridevirtualinherited

Returns true if the prop is mutable.

Returns true only if the prop derives from GVarProp and setImmutable() was not called. Props with another type than GVarProp are always immutable.

Reimplemented from guit::GProp.

void guit::GVarProp::setImmutable ( )
inlineoverridevirtualinherited

Makes the prop immutable.

Affects only GVarProp props (other props are always immutable). A prop cannot be made mutable again after this method has been called.

Reimplemented from guit::GProp.

void guit::GVarProp::unbind ( GVarProp sender)
inherited

Unbinds this prop.

  • the first version unbinds another prop (note that it doesn't unbind Prop fields).
  • the second version unbinds bindings according to its bindtag argument:

    if bindtag is >= 0, unbinds bindings performed with the same bindtag (default by 0, see bind())

if bindtag is < 0, unbinds all bindings with a value >= bindtag

Importantly, these methods unbinds props both ways if the binding was done both ways (e.g. by using sync())

void guit::GVarProp::blink ( GString const &  msg = "",
GTime  duration = 500 
)
inherited

Blinks gadget parents of the prop.

Shows a warning if msg is not empty.

virtual float guit::GProp::floatValue ( ) const
inlinevirtualinherited

Returns the value of the prop as a float.

Returns 0.f if the prop has no value of its value cannot be converted to a float.

Reimplemented in guit::GNumExpr, guit::GTextExpr, guit::GBoolExpr, guit::GExpr, guit::GState, guit::GText, and guit::GBool.

virtual bool guit::GProp::boolValue ( ) const
inlinevirtualinherited

Returns the value as a bool.

Returns false if the prop has no value of its value cannot be converted to a bool.

Reimplemented in guit::GNumExpr, guit::GTextExpr, guit::GBoolExpr, guit::GExpr, and guit::GBool.

bool guit::GProp::isEquivalent ( GProp const &  other) const
virtualinherited

Returns true if these props are equivalent.

Adding a prop to a gadget replaces the equivalent prop it contains (if it contains any). In all other cases, the prop is added to the gadget proplist. NOTE: props with a negative role are never equivalent!

Reimplemented in guit::GExpr, guit::GCond, guit::GState, and guit::GAnim.

void guit::GObject::error ( GString const &  funname,
GString const &  message 
) const
virtualinherited

Prints an error message.

See Also
GApp::onError() to change error management.
void guit::GObject::ignoreSmartPointers ( )
inlineinherited

Checks/sets whether this object can be auto-deleted by smart pointers.

ignoreSmartPointers() has a permanent effect, contrary to forgetSmartPointers(). Objects not created by calling new are never auto-deleted by smart pointers.

void guit::GObject::forgetSmartPointers ( )
inlineinherited

Forgets all smart pointers pointing this object.

The smart pointers that are currently pointing to the object won't auto-delete it. forgetSmartPointers() has a temporary effect, contrary to ignoreSmartPointers().


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