135 lines
3.6 KiB
C++
135 lines
3.6 KiB
C++
/* Copyright (C) 2016 Mike Fleetwood
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ProgressBar.h"
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#include "Utils.h"
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#include <glibmm/ustring.h>
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namespace GParted
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{
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ProgressBar::ProgressBar() : m_running( false ), m_target( 1.0 ), m_progress( 0.0 ), m_fraction( 0.0 ),
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m_text_mode(PROGRESSBAR_TEXT_TIME_REMAINING)
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{
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}
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ProgressBar::~ProgressBar()
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{
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}
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void ProgressBar::start( double target, ProgressBar_Text text_mode )
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{
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m_running = true;
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m_target = target;
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m_progress = 0.0;
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m_text_mode = text_mode;
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m_text.clear();
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m_timer.start();
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do_update();
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}
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void ProgressBar::update( double progress )
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{
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if ( m_running )
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{
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m_progress = progress;
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do_update();
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}
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}
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void ProgressBar::stop()
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{
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m_running = false;
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m_timer.stop();
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do_update();
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}
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bool ProgressBar::running() const
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{
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return m_running;
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}
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double ProgressBar::get_fraction() const
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{
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return m_fraction;
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}
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const Glib::ustring& ProgressBar::get_text() const
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{
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return m_text;
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}
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// Private methods
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// Update m_fraction and m_text as required.
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void ProgressBar::do_update()
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{
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m_fraction = m_progress / m_target;
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if ( m_fraction < 0.0 )
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m_fraction = 0.0;
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else if ( m_fraction > 1.0 )
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m_fraction = 1.0;
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double elapsed = m_timer.elapsed();
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if ( m_text_mode == PROGRESSBAR_TEXT_COPY_BYTES )
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{
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if ( m_running && elapsed >= 5.0 )
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{
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/* Only show "(00:01:59 remaining)" when a progress bar has been
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* running for at least 5 seconds to allow the data copying rate
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* to settle down a little before estimating the time remaining.
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*/
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std::time_t remaining = Utils::round( (m_target - m_progress) /
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(m_progress / elapsed) );
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m_text = Glib::ustring::compose( /* TO TRANSLATORS: looks like 1.00 MiB of 16.00 MiB copied (00:01:59 remaining) */
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_("%1 of %2 copied (%3 remaining)"),
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Utils::format_size( (long long)m_progress, 1 ),
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Utils::format_size( (long long)m_target, 1 ),
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Utils::format_time( remaining ) );
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}
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else
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{
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m_text = Glib::ustring::compose( /* TO TRANSLATORS: looks like 1.00 MiB of 16.00 MiB copied */
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_("%1 of %2 copied"),
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Utils::format_size( m_progress, 1 ),
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Utils::format_size( m_target, 1 ) );
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}
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}
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else /* (m_text_mode == PROGRESSBAR_TEXT_TIME_REMAINING) */
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{
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if (m_running && elapsed >= 5.0)
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{
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/* Only show "(00:01:59 remaining)" when a progress bar has been
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* running for at least 5 seconds to allow the progress rate to
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* settle down a little before estimating the time remaining.
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*/
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std::time_t remaining = Utils::round((m_target - m_progress) /
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(m_progress / elapsed) );
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m_text = Glib::ustring::compose( /* TO TRANSLATORS: looks like (00:01:59 remaining) */
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_("(%1 remaining)"),
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Utils::format_time(remaining));
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}
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else
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{
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m_text.clear();
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}
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}
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}
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}//GParted
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