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#! perl |
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root |
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=head1 NAME |
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example-refresh-hooks - example of how to use refresh hooks |
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root |
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=head1 DESCRIPTION |
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root |
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Displays a very simple digital clock in the upper right corner of the |
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window. Illustrates overwriting the refresh callbacks to create your own |
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overlays or changes. |
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=cut |
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root |
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sub on_init { |
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my ($self) = @_; |
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# force a refresh every second |
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$self->{digital_clock_refresh} = urxvt::timer |
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->new |
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root |
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->start (1 + int urxvt::NOW) |
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->interval (1) |
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->cb (sub { $self->want_refresh }); |
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root |
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() |
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} |
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# before refreshing: replace upper right with the clock display |
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sub on_refresh_begin { |
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my ($self) = @_; |
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my $time = sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2, 1, 0]; |
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my $xpos = $self->ncol - length $time; |
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$xpos >= 0 |
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or return; |
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$self->{digital_clock_rend} = $self->ROW_r (0, [(urxvt::DEFAULT_RSTYLE) x length $time], $xpos); |
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$self->{digital_clock_text} = $self->ROW_t (0, $time, $xpos); |
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() |
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} |
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# after refreshing: restore previous screen contents |
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sub on_refresh_end { |
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my ($self) = @_; |
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exists $self->{digital_clock_text} |
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or return; |
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$self->ROW_r (0, delete $self->{digital_clock_rend}); |
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$self->ROW_t (0, delete $self->{digital_clock_text}); |
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() |
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} |
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