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#ifndef RALEIGH_WIDGET_H
#define RALEIGH_WIDGET_H
namespace raleigh {
class widget;
}
#include <raleigh/window.h>
#include <pland/syscall.h>
#include <raleigh/util.h>
namespace raleigh {
class widget {
public:
//these three are set by window class (or parent widget)
widget *parent;//set to zero when root widget
window *w;
coord window_offset;
//derived classes should not set this outside of the initializer
//instead, they should call widget::set_size(coord)
coord size;
//fewest steps up that a widget can be redrawn without needing its parents
//if a widget is opaque, it will set this to a pointer to itself, and then call
// notify_has_opaque_parent on any children, passing itself as an argument.
//in notify_has_opaque_parent's handler, it should set this if it isn't already set,
// and then call notify_has_opaque_parent on any children (with the opaque parent).
widget *closest_opaque;
//these are called by window class (or parent widgets)
virtual void notify_window_change();
virtual void paint(_pixel_t *pixbuf, uint32_t pitch) = 0;
virtual void handle_click(coord window_coords, enum mouse_packet::mouse_button click_type, bool up);
virtual void notify_has_opaque_parent(widget *parent) = 0;
virtual void handle_key(struct key_packet kp);
virtual void on_focus();
virtual void on_unfocus();
virtual void on_mouse_move(coord window_coords);
//this next one is not to be called by child widgets
//they should call window::notify_widget_size_change(widget &), which will call this if necessary
virtual void notify_child_size_change(widget &child, coord old_size);
protected:
widget();
void set_size(coord to);
};
}
#endif
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