mirror of https://github.com/BOINC/boinc.git
66 lines
2.4 KiB
C++
66 lines
2.4 KiB
C++
// The contents of this file are subject to the BOINC Public License
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// Version 1.0 (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License at
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// http://boinc.berkeley.edu/license_1.0.txt
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//
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// Software distributed under the License is distributed on an "AS IS"
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// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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// License for the specific language governing rights and limitations
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// under the License.
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//
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// The Original Code is the Berkeley Open Infrastructure for Network Computing.
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//
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// The Initial Developer of the Original Code is the SETI@home project.
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// Portions created by the SETI@home project are Copyright (C) 2002
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// University of California at Berkeley. All Rights Reserved.
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//
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// Contributor(s):
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//
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// BOINC core client screensaver logic.
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// The basic idea:
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// when the core client goes into screensaver mode,
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// it immediately creates a "curtain" fullscreen window
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// (this ensures that no user input gets lost)
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// It tells all apps to hide their graphics.
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// It asks a graphic-capable app to do fullscreen graphics.
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// If there is none, or if the app doesn't ack in 5 seconds,
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// the core client draws the BOINC logo graphics in the curtain window.
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// (There's no attempt to request graphics from another app.)
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// When it's time to blank screen, it tells the graphics app,
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// if any, to hide itself, and draws black in the curtain window.
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// Leave screensaver mode if either:
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// - the core client gets user input in the curtain window, or
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// - the core client gets an END_SS message from the graphics app.
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// In either case, it close the curtain window and restores all apps
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// to their pre-screensaver state
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#ifndef _SS_LOGIC_
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#define _SS_LOGIC_
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#include <time.h>
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class SS_LOGIC {
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time_t blank_time; // 0 or time to blank screen
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time_t ack_deadline; // when to give up on graphics app
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public:
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SS_LOGIC();
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char ss_msg[256]; // message to display on BOINC screensaver
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void start_ss(time_t blank_time);
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void stop_ss();
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void poll();
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bool do_ss; // true if we're acting like a screensaver
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bool do_boinc_logo_ss; // true if we're bouncing the logo
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bool do_blank; // true if we're drawing black
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// invariants
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//
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// do_boinc_logo_ss and do_blank are not both true
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// at most one app has request_mode = FULLSCREEN
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// pre-ss mode of all apps is not FULLSCREEN
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};
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#endif
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