96 lines
3.9 KiB
C++
96 lines
3.9 KiB
C++
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# ifndef SR_EVENT_H
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# define SR_EVENT_H
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/** \file sr_event.h
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* A user-generated window-event
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*/
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# include "sr_vec2.h"
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# include "sr_line.h"
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# include "sr_output.h"
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/*! \class SrEvent sr_event.h
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\brief Keeps a window event
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SrEvent is used to describe a mouse or keyboard event, in a
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system-independent way. */
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class SrEvent
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{ public :
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/*! Enumerators for the type of event. */
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enum Type { None, //!< No event occured.
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Push, //!< A mouse button was pushed.
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Drag, //!< The mouse moved with a button down.
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Release, //!< A mouse button was released.
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Keyboard //!< A key was pressed.
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};
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/*! Enumerators with codes for special keys. */
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enum KeyCodes { KeyEsc=65307, KeyDel=65535, KeyIns=65379, KeyBack=65288,
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KeyUp=65362, KeyDown=65364, KeyLeft=65361, KeyRigth=65363,
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KeyEnd=65367, KeyPgDn=65366, KeyPgUp=65365, KeyHome=65360,
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KeyShift=653505, KeyCtrl=65307, KeyAlt=65313, KeySpace=32,
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KeyEnter=65293 };
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public : //--- event occured :
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Type type; //!< The type of the occured event
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char button; //!< The button number 1, 2 or 3 if event type was Push or Release, 0 otherwise
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int key; //!< The ascii code / code of the key pressed (uppercase) if it was a keyboard event, 0 otherwise
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int width; //!< The width of the screen when the event occured
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int heigth; //!< The heigth of the screen when the event occured
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// float scenew; //!< Width in the units of the scene
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// float sceneh; //!< Heigth in the units of the scene
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public : //--- states at event time :
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char button1; //!< Contains 1 if the left mouse button state is pressed, 0 otherwise
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char button2; //!< Contains 1 if the middle mouse button state is pressed, 0 otherwise
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char button3; //!< Contains 1 if the right mouse button state is pressed, 0 otherwise
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char alt; //!< Contains 1 if the Alt modifier key state is pressed, 0 otherwise
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char ctrl; //!< Contains 1 if the Ctrl modifier key state is pressed, 0 otherwise
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char shift; //!< Contains 1 if the Shift modifier key state is pressed, 0 otherwise
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public : //--- mouse coordinates :
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SrVec2 mouse; //!< Current mouse push position in normalized coords [-1,1]
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SrVec2 lmouse; //!< Last mouse x push position in normalized coords [-1,1]
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public : //--- scene information :
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SrLine ray;
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SrLine lray;
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SrPnt mousep; //!< mouse point in scene coordinates at plane z=0
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SrPnt lmousep; //!< last mouse point in scene coordinates at plane z=0
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float pixel_size; //!< 0.05 by default but should be updated according to the camera
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public : //--- methods :
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/*! Initialize as a None event type, by calling init(). */
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SrEvent ();
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/*! Makes the event as the None type, and puts all data with their default values of zero. */
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void init ();
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/*! Puts mouse keyboard information to their default value, but saves the mouse
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values in the lmouse variables. */
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void init_lmouse ();
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/*! Returns a string with the name of the event type. */
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const char *type_name () const;
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/*! Returns the difference: mousex-lmousex. */
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float mousedx () const { return mouse.x-lmouse.x; }
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/*! Returns the difference: mousey-lmousey. */
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float mousedy () const { return mouse.y-lmouse.y; }
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/*! Returns true if the event type is push, drag, or release; and false otherwise. */
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bool mouse_event () const { return type==Push||type==Drag||type==Release? true:false; }
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/*! Outputs data of this event for data inspection. */
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friend SrOutput& operator<< ( SrOutput& out, const SrEvent& e );
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};
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//================================ End of File =================================================
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# endif // SR_EVENT_H
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