ladybird/LibGUI/GEvent.h
Andreas Kling 497300c492 LibGUI: Add a GStackWidget for many widgets sharing a single location.
Call set_active_widget(GWidget*) to put a new widget on top.
2019-03-15 16:12:06 +01:00

190 lines
4.1 KiB
C++

#pragma once
#include <SharedGraphics/Point.h>
#include <SharedGraphics/Rect.h>
#include <AK/AKString.h>
#include <AK/Types.h>
#include <AK/WeakPtr.h>
#include <Kernel/KeyCode.h>
class GObject;
class GEvent {
public:
enum Type {
Invalid = 0,
Quit,
Show,
Hide,
Paint,
Resize,
MouseMove,
MouseDown,
MouseUp,
Enter,
Leave,
KeyDown,
KeyUp,
Timer,
DeferredDestroy,
WindowEntered,
WindowLeft,
WindowBecameInactive,
WindowBecameActive,
FocusIn,
FocusOut,
WindowCloseRequest,
ChildAdded,
ChildRemoved,
};
GEvent() { }
explicit GEvent(Type type) : m_type(type) { }
virtual ~GEvent() { }
Type type() const { return m_type; }
bool is_mouse_event() const { return m_type == MouseMove || m_type == MouseDown || m_type == MouseUp; }
bool is_key_event() const { return m_type == KeyUp || m_type == KeyDown; }
bool is_paint_event() const { return m_type == Paint; }
private:
Type m_type { Invalid };
};
class QuitEvent final : public GEvent {
public:
QuitEvent()
: GEvent(GEvent::Quit)
{
}
};
class GPaintEvent final : public GEvent {
public:
explicit GPaintEvent(const Rect& rect, const Size& window_size = Size())
: GEvent(GEvent::Paint)
, m_rect(rect)
, m_window_size(window_size)
{
}
Rect rect() const { return m_rect; }
Size window_size() const { return m_window_size; }
private:
Rect m_rect;
Size m_window_size;
};
class GResizeEvent final : public GEvent {
public:
explicit GResizeEvent(const Size& old_size, const Size& size)
: GEvent(GEvent::Resize)
, m_old_size(old_size)
, m_size(size)
{
}
const Size& old_size() const { return m_old_size; }
const Size& size() const { return m_size; }
private:
Size m_old_size;
Size m_size;
};
class GShowEvent final : public GEvent {
public:
GShowEvent()
: GEvent(GEvent::Show)
{
}
};
class GHideEvent final : public GEvent {
public:
GHideEvent()
: GEvent(GEvent::Hide)
{
}
};
enum GMouseButton : byte {
None = 0,
Left = 1,
Right = 2,
Middle = 4,
};
class GKeyEvent final : public GEvent {
public:
GKeyEvent(Type type, int key, byte modifiers)
: GEvent(type)
, m_key(key)
, m_modifiers(modifiers)
{
}
int key() const { return m_key; }
bool ctrl() const { return m_modifiers & Mod_Ctrl; }
bool alt() const { return m_modifiers & Mod_Alt; }
bool shift() const { return m_modifiers & Mod_Shift; }
bool logo() const { return m_modifiers & Mod_Logo; }
byte modifiers() const { return m_modifiers; }
String text() const { return m_text; }
private:
friend class GEventLoop;
int m_key { 0 };
byte m_modifiers { 0 };
String m_text;
};
class GMouseEvent final : public GEvent {
public:
GMouseEvent(Type type, const Point& position, unsigned buttons, GMouseButton button, unsigned modifiers)
: GEvent(type)
, m_position(position)
, m_buttons(buttons)
, m_button(button)
, m_modifiers(modifiers)
{
}
Point position() const { return m_position; }
int x() const { return m_position.x(); }
int y() const { return m_position.y(); }
GMouseButton button() const { return m_button; }
unsigned buttons() const { return m_buttons; }
unsigned modifiers() const { return m_modifiers; }
private:
Point m_position;
unsigned m_buttons { 0 };
GMouseButton m_button { GMouseButton::None };
unsigned m_modifiers { 0 };
};
class GTimerEvent final : public GEvent {
public:
explicit GTimerEvent(int timer_id) : GEvent(GEvent::Timer), m_timer_id(timer_id) { }
~GTimerEvent() { }
int timer_id() const { return m_timer_id; }
private:
int m_timer_id;
};
class GChildEvent final : public GEvent {
public:
GChildEvent(Type, GObject& child);
~GChildEvent();
GObject* child() { return m_child.ptr(); }
const GObject* child() const { return m_child.ptr(); }
private:
WeakPtr<GObject> m_child;
};