A interactive area in a widget, specified by a circle. More...
#include <Wt/WCircleArea.h>
Inheritance diagram for Wt::WCircleArea:
Public Member Functions | |
| WCircleArea () | |
| Default constructor. More... | |
| WCircleArea (int x, int y, int radius) | |
| Creates a circular area with given geometry. More... | |
| void | setCenter (const WPoint &point) |
| Sets the center. | |
| void | setCenter (const WPointF &point) |
| Sets the center. | |
| void | setCenter (int x, int y) |
| Sets the center. | |
| int | centerX () const |
| Returns the center X coordinate. | |
| int | centerY () const |
| Returns the center Y coordinate. | |
| void | setRadius (int radius) |
| Sets the radius. | |
| int | radius () const |
| Returns the radius. | |
 Public Member Functions inherited from Wt::WAbstractArea | |
| virtual | ~WAbstractArea () |
| Destructor. More... | |
| void | setHole (bool hole) |
| Specifies that this area specifies a hole for another area. More... | |
| bool | isHole () const |
| Returns whether this area specifies a hole. More... | |
| void | setLink (const WLink &link) |
| Sets a link. More... | |
| WLink | link () const |
| Returns the link. More... | |
| void | setAlternateText (const WString &text) |
| Sets an alternate text. More... | |
| const WString | alternateText () const |
| Returns the alternate text. More... | |
| void | setToolTip (const WString &text) |
| Sets the tooltip. More... | |
| WString | toolTip () const |
| Returns the tooltip text. More... | |
| void | setStyleClass (const WString &styleClass) |
| Defines a style class. More... | |
| WString | styleClass () const |
| Returns the style class. More... | |
| void | addStyleClass (const WString &styleClass, bool force=false) |
| Adds a style class. More... | |
| void | removeStyleClass (const WString &styleClass, bool force=false) |
| Removes a style class. | |
| void | setCursor (Cursor cursor) |
| Sets the cursor. More... | |
| void | setCursor (std::string cursorImage, Cursor fallback=Cursor::Arrow) |
| Sets a custom cursor image URL. More... | |
| Cursor | cursor () const |
| Returns the cursor. More... | |
| EventSignal< WKeyEvent > & | keyWentDown () |
| Event signal emitted when a keyboard key is pushed down. More... | |
| EventSignal< WKeyEvent > & | keyPressed () |
| Event signal emitted when a "character" was entered. More... | |
| EventSignal< WKeyEvent > & | keyWentUp () |
| Event signal emitted when a keyboard key is released. More... | |
| EventSignal & | enterPressed () |
| Event signal emitted when enter was pressed. More... | |
| EventSignal & | escapePressed () |
| Event signal emitted when escape was pressed. More... | |
| EventSignal< WMouseEvent > & | clicked () |
| Event signal emitted when a mouse key was clicked on this widget. More... | |
| EventSignal< WMouseEvent > & | doubleClicked () |
| Event signal emitted when a mouse key was double clicked on this widget. More... | |
| EventSignal< WMouseEvent > & | mouseWentDown () |
| Event signal emitted when a mouse key was pushed down on this widget. More... | |
| EventSignal< WMouseEvent > & | mouseWentUp () |
| Event signal emitted when a mouse key was released on this widget. More... | |
| EventSignal< WMouseEvent > & | mouseWentOut () |
| Event signal emitted when the mouse went out of this widget. More... | |
| EventSignal< WMouseEvent > & | mouseWentOver () |
| Event signal emitted when the mouse entered this widget. More... | |
| EventSignal< WMouseEvent > & | mouseMoved () |
| Event signal emitted when the mouse moved over this widget. More... | |
| EventSignal< WMouseEvent > & | mouseDragged () |
| Event signal emitted when the mouse is dragged over this widget. More... | |
| EventSignal< WMouseEvent > & | mouseWheel () |
| Event signal emitted when the mouse scroll wheel was used. More... | |
| Public Member Functions inherited from Wt::WObject | |
| void | addChild (std::unique_ptr< WObject > child) |
| Add a child WObject whose lifetime is determined by this WObject. | |
| template<typename Child > | |
| Child * | addChild (std::unique_ptr< Child > child) |
| Add a child WObject, returning a raw pointer. More... | |
| std::unique_ptr< WObject > | removeChild (WObject *child) |
| Remove a child WObject, so its lifetime is no longer determined by this WObject. | |
| template<typename Child > | |
| std::unique_ptr< Child > | removeChild (Child *child) |
| Remove a child WObject, so its lifetime is no longer determined by this WObject. More... | |
| virtual const std::string | id () const |
| Returns the (unique) identifier for this object. More... | |
| virtual void | setObjectName (const std::string &name) |
| Sets an object name. More... | |
| virtual std::string | objectName () const |
| Returns the object name. More... | |
| void | resetLearnedSlots () |
| Resets learned stateless slot implementations. More... | |
| template<class T > | |
| void | resetLearnedSlot (void(T::*method)()) |
| Resets a learned stateless slot implementation. More... | |
| template<class T > | |
| WStatelessSlot * | implementStateless (void(T::*method)()) |
| Declares a slot to be stateless and learn client-side behaviour on first invocation. More... | |
| template<class T > | |
| WStatelessSlot * | implementStateless (void(T::*method)(), void(T::*undoMethod)()) |
| Declares a slot to be stateless and learn client-side behaviour in advance. More... | |
| void | isNotStateless () |
| Marks the current function as not stateless. More... | |
| template<class T > | |
| WStatelessSlot * | implementJavaScript (void(T::*method)(), const std::string &jsCode) |
| Provides a JavaScript implementation for a method. More... | |
| Public Member Functions inherited from Wt::Core::observable | |
| observable () noexcept | |
| Default constructor. | |
| virtual | ~observable () |
| Destructor. More... | |
| template<typename... Args, typename C > | |
| auto | bindSafe (void(C::*method)(Args...)) noexcept |
| Protects a method call against object destruction. More... | |
| template<typename... Args, typename C > | |
| auto | bindSafe (void(C::*method)(Args...) const) const noexcept |
| Protects a const method call against object destruction. More... | |
| template<typename Function > | |
| auto | bindSafe (const Function &function) noexcept |
| Protects a function against object destruction. More... | |
Additional Inherited Members | |
| Public Types inherited from Wt::WObject | |
| typedef void(WObject::* | Method) () |
| Typedef for a WObject method without arguments. | |
| Protected Member Functions inherited from Wt::WObject | |
| virtual WStatelessSlot * | getStateless (Method method) |
| On-demand stateless slot implementation. More... | |
Detailed Description
A interactive area in a widget, specified by a circle.
The area may be added to a WImage or WPaintedWidget to provide interactivity on a circular area of the image. The circle is specified in pixel coordinates.
Usage example:
Wt::WImage *image = addWidget(std::make_unique<Wt::WImage>("images/events.png"));
Wt::WCircleArea *area = image->addArea(std::make_unique<Wt::WCircleArea>(20, 30, 15));
area->clicked().connect(this, &MyWidget::areaClicked);
EventSignal< WMouseEvent > & clicked()
Event signal emitted when a mouse key was clicked on this widget.
Definition: WAbstractArea.C:97
void addArea(std::unique_ptr< WAbstractArea > area)
Adds an interactive area.
Definition: WImage.C:144
Constructor & Destructor Documentation
◆ WCircleArea() [1/2]
| Wt::WCircleArea::WCircleArea | ( | ) |
Default constructor.
Specifies a circular area with center (0, 0) and radius 0.
◆ WCircleArea() [2/2]
| Wt::WCircleArea::WCircleArea | ( | int | x, |
| int | y, | ||
| int | radius | ||
| ) |
Creates a circular area with given geometry.
The arguments are in pixel units.
