82 lines
1.8 KiB
C++
82 lines
1.8 KiB
C++
/*
|
|
* \brief Nitpicker mouse cursor
|
|
* \author Norman Feske
|
|
* \date 2006-08-18
|
|
*
|
|
* The Nitpicker mouse cursor is implemented as a transparent
|
|
* view that stays always in front of all other views.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2006-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _MOUSE_CURSOR_H_
|
|
#define _MOUSE_CURSOR_H_
|
|
|
|
#include <nitpicker_gfx/texture_painter.h>
|
|
|
|
#include "view.h"
|
|
#include "session.h"
|
|
|
|
template <typename PT>
|
|
class Mouse_cursor : public Texture<PT>,
|
|
public Session, public View
|
|
{
|
|
private:
|
|
|
|
View_stack const &_view_stack;
|
|
|
|
public:
|
|
|
|
/**
|
|
* Constructor
|
|
*/
|
|
Mouse_cursor(PT const *pixels, Area size, View_stack const &view_stack)
|
|
:
|
|
Texture<PT>(pixels, 0, size),
|
|
Session(Genode::Session_label(""), 0, false),
|
|
View(*this, View::STAY_TOP, View::TRANSPARENT, View::NOT_BACKGROUND, 0),
|
|
_view_stack(view_stack)
|
|
{ }
|
|
|
|
|
|
/***********************
|
|
** Session interface **
|
|
***********************/
|
|
|
|
void submit_input_event(Input::Event) override { }
|
|
void submit_sync() override { }
|
|
|
|
|
|
/********************
|
|
** View interface **
|
|
********************/
|
|
|
|
/*
|
|
* The mouse cursor is always displayed without a surrounding frame.
|
|
*/
|
|
|
|
int frame_size(Mode const &mode) const override { return 0; }
|
|
|
|
void frame(Canvas_base &canvas, Mode const &mode) const override { }
|
|
|
|
void draw(Canvas_base &canvas, Mode const &mode) const override
|
|
{
|
|
Rect const view_rect = abs_geometry();
|
|
|
|
Clip_guard clip_guard(canvas, view_rect);
|
|
|
|
/* draw area behind the mouse cursor */
|
|
_view_stack.draw_rec(canvas, view_stack_next(), view_rect);
|
|
|
|
/* draw mouse cursor */
|
|
canvas.draw_texture(view_rect.p1(), *this, Texture_painter::MASKED, BLACK, true);
|
|
}
|
|
};
|
|
|
|
#endif
|