339 lines
8.6 KiB
C++
339 lines
8.6 KiB
C++
/*
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* \brief Nitpicker-based virtual framebuffer
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* \author Norman Feske
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* \date 2006-09-21
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*/
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/*
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* Copyright (C) 2006-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#include <base/rpc_server.h>
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#include <base/signal.h>
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#include <cap_session/connection.h>
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#include <os/config.h>
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#include "framebuffer_window.h"
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#include "canvas_rgb565.h"
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#include "user_state.h"
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#include "services.h"
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using namespace Genode;
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/**
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* Runtime configuration
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*/
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namespace Config
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{
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int iconbar_detail = 1;
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int background_detail = 1;
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int mouse_cursor = 1;
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int browser_attr = 0;
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}
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void Launcher::launch() { }
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extern int native_startup(int, char **);
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class Background_animator : public Tick
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{
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private:
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Framebuffer_window<Pixel_rgb565> *_fb_win;
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int _bg_offset;
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public:
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/**
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* Constructor
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*/
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Background_animator(Framebuffer_window<Pixel_rgb565> *fb_win):
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_fb_win(fb_win), _bg_offset(0) {
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schedule(20); }
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/**
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* Tick interface
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*/
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int on_tick()
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{
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_fb_win->bg_offset(_bg_offset);
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_bg_offset += 2;
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_fb_win->refresh();
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/* schedule next tick */
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return 1;
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}
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};
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/**
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* Animated background
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*/
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static bool config_animate = true;
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static bool config_alpha = true;
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/**
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* Size and position of virtual frame buffer
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*/
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static long config_fb_width = 500;
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static long config_fb_height = 400;
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static long config_fb_x = 400;
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static long config_fb_y = 260;
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/**
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* Window title
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*/
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static const char *config_title = "Liquid Framebuffer";
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/**
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* Resize handle
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*/
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static bool config_resize_handle = false;
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/**
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* Window decoration
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*/
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static bool config_decoration = true;
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/**
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* Parse configuration
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*/
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static void read_config()
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{
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using namespace Genode;
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Xml_node config_node = config()->xml_node();
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try {
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char buf[16];
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config_node.attribute("animate").value(buf, sizeof(buf));
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if (!strcmp("off", buf)) config_animate = false;
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else if (!strcmp("on", buf)) config_animate = true;
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else
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Genode::printf("Warning: invalid value for animate declaration,\n"
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" valid values are 'on', 'off.\n'");
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} catch (Xml_node::Nonexistent_attribute) { }
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config_alpha = config_animate;
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try { config_node.attribute("xpos").value(&config_fb_x); }
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catch (Xml_node::Nonexistent_attribute) { }
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try { config_node.attribute("ypos").value(&config_fb_y); }
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catch (Xml_node::Nonexistent_attribute) { }
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try { config_node.attribute("width").value(&config_fb_width); }
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catch (Xml_node::Nonexistent_attribute) { }
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try { config_node.attribute("height").value(&config_fb_height); }
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catch (Xml_node::Nonexistent_attribute) { }
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try {
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static char buf[64];
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config_node.attribute("title").value(buf, sizeof(buf));
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config_title = buf;
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} catch (Xml_node::Nonexistent_attribute) { }
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try {
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char buf[16];
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config_node.attribute("decoration").value(buf, sizeof(buf));
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if (!strcmp("off", buf)) config_decoration = false;
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else if (!strcmp("on", buf)) config_decoration = true;
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else
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Genode::printf("Warning: invalid value for decoration declaration,\n"
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" valid values are 'on', 'off.\n'");
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} catch (Xml_node::Nonexistent_attribute) { }
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try {
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char buf[16];
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config_node.attribute("resize_handle").value(buf, sizeof(buf));
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if (!strcmp("off", buf)) config_resize_handle = false;
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else if (!strcmp("on", buf)) config_resize_handle = true;
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else
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Genode::printf("Warning: invalid value for resize_handle declaration,\n"
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" valid values are 'on', 'off.\n'");
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} catch (Xml_node::Nonexistent_attribute) { }
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}
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/*******************
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** Input handler **
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*******************/
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struct Input_handler
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{
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GENODE_RPC(Rpc_handle_input, void, handle, Event&);
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GENODE_RPC_INTERFACE(Rpc_handle_input);
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};
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class Input_handler_component : public Genode::Rpc_object<Input_handler,
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Input_handler_component>
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{
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private:
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Platform &_pf;
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User_state &_user_state;
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Framebuffer_window<Pixel_rgb565> &_fb_win;
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Redraw_manager &_redraw;
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Signal_receiver &_sig_rec;
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unsigned long _curr_time, _old_time;
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public:
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Input_handler_component(Platform &pf,
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User_state &user_state,
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Framebuffer_window<Pixel_rgb565> &fb_win,
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Redraw_manager &redraw,
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Signal_receiver &sig_rec)
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: _pf(pf),
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_user_state(user_state),
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_fb_win(fb_win),
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_redraw(redraw),
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_sig_rec(sig_rec)
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{
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_curr_time = _old_time = _pf.timer_ticks();
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}
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void handle(Event &ev)
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{
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if (ev.type != Event::WHEEL) {
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ev.mx -= _user_state.vx();
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ev.my -= _user_state.vy();
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}
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/* direct all keyboard events to the window content */
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if ((ev.type == Event::PRESS || ev.type == Event::RELEASE)
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&& (ev.code != Event::BTN_LEFT))
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window_content()->handle_event(ev);
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else
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_user_state.handle_event(ev);
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if (ev.type == Event::REFRESH)
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_pf.scr_update(0, 0, _pf.scr_w(), _pf.scr_h());
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if (ev.type == Event::TIMER) {
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Tick::handle(_pf.timer_ticks());
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/* check for configuration changes */
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if (_sig_rec.pending()) {
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_sig_rec.wait_for_signal();
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config()->reload();
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/* keep the current values by default */
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config_fb_x = _fb_win.view_x();
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config_fb_y = _fb_win.view_y();
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config_fb_width = _fb_win.view_w();
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config_fb_height = _fb_win.view_h();
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try { read_config(); } catch (...) { }
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_fb_win.name(config_title);
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_fb_win.config_alpha(config_alpha);
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_fb_win.config_resize_handle(config_resize_handle);
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_fb_win.config_decoration(config_decoration);
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/* must get called after 'config_decoration()' */
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_fb_win.content_geometry(config_fb_x, config_fb_y,
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config_fb_width, config_fb_height);
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_user_state.update_view_offset();
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}
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}
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/* perform periodic redraw */
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_curr_time = _pf.timer_ticks();
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if (!_pf.event_pending() && ((_curr_time - _old_time > 20) || (_curr_time < _old_time))) {
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_old_time = _curr_time;
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_redraw.process();
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}
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}
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};
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/**
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* Main program
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*/
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int main(int argc, char **argv)
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{
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if (native_startup(argc, argv)) return -1;
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try { read_config(); } catch (...) { }
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/*
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* Register signal handler for config changes
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*/
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static Signal_receiver sig_rec;
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static Signal_context sig_ctx;
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try { config()->sigh(sig_rec.manage(&sig_ctx)); } catch (...) { }
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/* heuristic for allocating the double-buffer backing store */
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enum { WINBORDER_WIDTH = 10, WINBORDER_HEIGHT = 40 };
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/* init platform */
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static Platform pf(config_fb_x, config_fb_y,
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config_fb_width + WINBORDER_WIDTH,
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config_fb_height + WINBORDER_HEIGHT,
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config_fb_width + WINBORDER_WIDTH,
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config_fb_height + WINBORDER_HEIGHT);
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/* initialize our window content */
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init_window_content(config_fb_width, config_fb_height, config_alpha);
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/* init canvas */
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static Chunky_canvas<Pixel_rgb565> canvas;
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canvas.init(static_cast<Pixel_rgb565 *>(pf.buf_adr()),
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pf.scr_w()*pf.scr_h());
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canvas.set_size(pf.scr_w(), pf.scr_h());
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canvas.clip(0, 0, pf.scr_w(), pf.scr_h());
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/* init redraw manager */
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static Redraw_manager redraw(&canvas, &pf, pf.vw(), pf.vh());
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/* create instance of browser window */
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static Framebuffer_window<Pixel_rgb565>
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fb_win(&pf, &redraw, window_content(), config_title, config_alpha,
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config_resize_handle, config_decoration);
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if (config_animate) {
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static Background_animator fb_win_bg_anim(&fb_win);
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}
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/* create user state manager */
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static User_state user_state(&fb_win, &fb_win, pf.vx(), pf.vy());
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/* assign framebuffer window as root element to redraw manager */
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redraw.root(&fb_win);
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fb_win.parent(&user_state);
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fb_win.content_geometry(config_fb_x, config_fb_y,
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config_fb_width, config_fb_height);
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/* initialize server entry point */
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enum { STACK_SIZE = 2*1024*sizeof(addr_t) };
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static Cap_connection cap;
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static Rpc_entrypoint ep(&cap, STACK_SIZE, "liquid_fb_ep");
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/* initialize public services */
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init_services(ep);
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/* create local input handler service */
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static Input_handler_component input_handler(pf, user_state, fb_win,
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redraw, sig_rec);
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Capability<Input_handler> input_handler_cap = ep.manage(&input_handler);
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/* enter main loop */
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Event ev;
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do {
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pf.get_event(&ev);
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input_handler_cap.call<Input_handler::Rpc_handle_input>(ev);
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} while (ev.type != Event::QUIT);
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return 0;
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}
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