| | 1 | = Screensaver Logic = |
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| | 2 | |
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| | 3 | The screensaver supports: |
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| | 4 | |
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| | 5 | |
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| | 6 | 1. Fullscreen graphics from project applications |
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| | 7 | 1. A default BOINC logo screensaver when no running applications support graphics |
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| | 8 | 1. Screen blanking after a given time |
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| | 9 | |
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| | 10 | If the screensaver is running, the core client will try to devote screen time to a different project each time the CPUs are rescheduled. |
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| | 11 | |
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| | 12 | |
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| | 13 | {{{ |
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| | 14 | request_ss_app(): |
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| | 15 | choose some app that can do graphics |
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| | 16 | if app exists: |
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| | 17 | request app (from a different project if possible) |
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| | 18 | to do fullscreen graphics |
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| | 19 | ACK deadline = now + 5 sec |
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| | 20 | else: |
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| | 21 | do_boinc_logo_ss = true |
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| | 22 | |
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| | 23 | // called to force poll function to request another app to do graphics |
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| | 24 | // |
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| | 25 | // this is called by schedule_cpus() whenever CPUs are rescheduled |
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| | 26 | // |
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| | 27 | reset(): |
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| | 28 | tell any fullscreen app to hide |
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| | 29 | do_boinc_logo_ss = false |
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| | 30 | |
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| | 31 | // called when core client receives a message from the screensaver module |
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| | 32 | // |
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| | 33 | start_ss(new_blank_time): |
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| | 34 | save all apps' modes |
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| | 35 | hide all apps |
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| | 36 | blank_time = new_blank_time |
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| | 37 | if activities not suspended: |
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| | 38 | request_ss_app() |
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| | 39 | |
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| | 40 | // called when screensaver module quits |
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| | 41 | // |
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| | 42 | stop_ss(): |
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| | 43 | clean up stuff |
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| | 44 | restore apps' modes |
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| | 45 | |
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| | 46 | // called once a second |
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| | 47 | // |
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| | 48 | poll(): |
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| | 49 | if activities not suspended: |
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| | 50 | if doing screensaver: |
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| | 51 | if blank_time != 0 && now > blank_time: |
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| | 52 | if not screen not already blanked: |
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| | 53 | tell any fullscreen app to hide |
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| | 54 | blank screen |
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| | 55 | do_boinc_logo_ss = false |
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| | 56 | else: |
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| | 57 | get the fullscreen app |
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| | 58 | if app exists: |
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| | 59 | if app has sent ACK: |
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| | 60 | do_boinc_logo_ss = false |
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| | 61 | else if ACK deadline has passed: |
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| | 62 | tell app to hide |
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| | 63 | do_boinc_logo_ss = true |
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| | 64 | else: |
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| | 65 | request_ss_app() |
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| | 66 | else: |
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| | 67 | do_boinc_logo_ss = true |
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| | 68 | |
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| | 69 | |
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| | 70 | ///////////////////////// |
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| | 71 | logic of screensaver program: |
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| | 72 | screensaver starts |
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| | 73 | creates blank windows on every screen |
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| | 74 | show "screensaver loading" in all windows |
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| | 75 | |
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| | 76 | if core client not running and not set to run on startup |
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| | 77 | show "boinc not running, auto startup not detected |
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| | 78 | please reinstall and select this option" |
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| | 79 | 10 times, every 1 sec, then once every 30 sec |
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| | 80 | set_screensaver_mode RPC to core client |
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| | 81 | pass desktop/windowstation, blank time |
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| | 82 | get_screensaver_mode |
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| | 83 | returns: |
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| | 84 | - some app is doing fullscreen |
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| | 85 | - no graphics-capable app |
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| | 86 | - BOINC suspended |
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| | 87 | - time to blank |
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| | 88 | |
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| | 89 | after each get_screensaver_mode (beyond initial 10 sec): |
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| | 90 | if no app is doing graphics, |
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| | 91 | do get_results RPC |
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| | 92 | show string on all windows |
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| | 93 | |
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| | 94 | }}} |
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