View
- Broke out View into ViewTask and ViewText, where the former uses an external std::vector <Task> as storage, thus eliminating the additional copy, and the latter that duplicates data and color into 2D vectors for rendering non-task data.
This commit is contained in:
Paul Beckingham
282
src/ViewText.cpp
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282
src/ViewText.cpp
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////////////////////////////////////////////////////////////////////////////////
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// task - a command line task list manager.
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//
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// Copyright 2006 - 2011, Paul Beckingham, Federico Hernandez.
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// All rights reserved.
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//
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// This program is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free Software
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// Foundation; either version 2 of the License, or (at your option) any later
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// version.
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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// details.
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//
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// You should have received a copy of the GNU General Public License along with
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// this program; if not, write to the
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//
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// Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor,
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// Boston, MA
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// 02110-1301
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// USA
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//
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////////////////////////////////////////////////////////////////////////////////
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#include <ViewText.h>
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#include <Timer.h>
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#include <text.h>
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#include <utf8.h>
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#include <main.h>
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////////////////////////////////////////////////////////////////////////////////
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ViewText::ViewText ()
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: _width (0)
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, _left_margin (0)
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, _header (0)
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, _odd (0)
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, _even (0)
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, _intra_padding (1)
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, _intra_odd (0)
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, _intra_even (0)
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, _extra_padding (0)
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, _extra_odd (0)
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, _extra_even (0)
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, _truncate_lines (0)
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, _truncate_rows (0)
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, _lines (0)
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, _rows (0)
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{
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}
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////////////////////////////////////////////////////////////////////////////////
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void ViewText::add (const std::string& label)
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{
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_columns.push_back (Column::factory ("string", label));
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}
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////////////////////////////////////////////////////////////////////////////////
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int ViewText::addRow ()
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{
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_data.push_back (std::vector <std::string> (_columns.size (), ""));
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_color.push_back (std::vector <Color> (_columns.size (), Color::nocolor));
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return _data.size () - 1;
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}
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////////////////////////////////////////////////////////////////////////////////
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void ViewText::set (int row, int col, const std::string& value, Color color)
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{
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_data[row][col] = value;
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if (color.nontrivial ())
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_color[row][col] = color;
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}
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////////////////////////////////////////////////////////////////////////////////
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void ViewText::set (int row, int col, int value, Color color)
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{
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std::string string_value = format (value);
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_data[row][col] = value;
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if (color.nontrivial ())
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_color[row][col] = color;
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}
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////////////////////////////////////////////////////////////////////////////////
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void ViewText::set (int row, int col, float value, int width, int precision, Color color)
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{
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std::string string_value = format ((float)value, width, precision);
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_data[row][col] = value;
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if (color.nontrivial ())
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_color[row][col] = color;
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}
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////////////////////////////////////////////////////////////////////////////////
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std::string ViewText::render ()
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{
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Timer timer ("ViewText::render");
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// Determine minimal, ideal column widths.
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std::vector <int> minimal;
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std::vector <int> ideal;
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for (int col = 0; col < _columns.size (); ++col)
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{
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// Headers factor in to width calculations.
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int global_min = utf8_length (_columns[col]->getLabel ());
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int global_ideal = global_min;
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for (int row = 0; row < _data.size (); ++row)
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{
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// Determine minimum and ideal width for this column.
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int min;
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int ideal;
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_columns[col]->measure (_data[row][col], min, ideal);
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if (min > global_min) global_min = min;
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if (ideal > global_ideal) global_ideal = ideal;
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}
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minimal.push_back (global_min);
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ideal.push_back (global_ideal);
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}
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// Sum the minimal widths.
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int sum_minimal = 0;
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std::vector <int>::iterator c;
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for (c = minimal.begin (); c != minimal.end (); ++c)
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sum_minimal += *c;
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// Sum the ideal widths.
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int sum_ideal = 0;
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for (c = ideal.begin (); c != ideal.end (); ++c)
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sum_ideal += *c;
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// Calculate final column widths.
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int overage = _width
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- _left_margin
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- (2 * _extra_padding)
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- ((_columns.size () - 1) * _intra_padding);
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std::vector <int> widths;
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if (sum_ideal <= overage)
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widths = ideal;
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else if (sum_minimal > overage)
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throw std::string ("There is not enough horizontal width to display the results.");
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else
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{
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widths = minimal;
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overage -= sum_minimal;
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// Spread 'overage' among columns where width[i] < ideal[i]
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while (overage)
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{
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for (int i = 0; i < _columns.size () && overage; ++i)
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{
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if (widths[i] < ideal[i])
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{
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++widths[i];
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--overage;
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}
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}
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}
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}
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// Compose column headers.
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int max_lines = 0;
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std::vector <std::vector <std::string> > headers;
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for (int c = 0; c < _columns.size (); ++c)
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{
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headers.push_back (std::vector <std::string> ());
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_columns[c]->renderHeader (headers[c], widths[c], _header);
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if (headers[c].size () > max_lines)
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max_lines = headers[c].size ();
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}
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// Output string.
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std::string out;
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_lines = 0;
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// Render column headers.
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std::string left_margin = std::string (_left_margin, ' ');
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std::string extra = std::string (_extra_padding, ' ');
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std::string intra = std::string (_intra_padding, ' ');
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std::string extra_odd = _extra_odd.colorize (extra);
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std::string extra_even = _extra_even.colorize (extra);
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std::string intra_odd = _intra_odd.colorize (intra);
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std::string intra_even = _intra_even.colorize (intra);
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for (int i = 0; i < max_lines; ++i)
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{
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out += left_margin + extra;
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for (int c = 0; c < _columns.size (); ++c)
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{
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if (c)
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out += intra;
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if (headers[i].size () < max_lines - i)
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out += _header.colorize (std::string (widths[c], ' '));
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else
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out += headers[c][i];
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}
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out += extra + "\n";
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// Stop if the line limit is exceeded.
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if (++_lines >= _truncate_lines && _truncate_lines != 0)
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return out;
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}
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// Compose, render columns, in sequence.
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_rows = 0;
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std::vector <std::vector <std::string> > cells;
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for (int row = 0; row < _data.size (); ++row)
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{
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max_lines = 0;
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// Alternate rows based on |s % 2|
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bool odd = (row % 2) ? true : false;
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Color row_color = odd ? _odd : _even;
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Color cell_color;
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for (int col = 0; col < _columns.size (); ++col)
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{
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cell_color = row_color;
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cell_color.blend (_color[row][col]);
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cells.push_back (std::vector <std::string> ());
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_columns[col]->render (cells[col], _data[row][col], widths[col], cell_color);
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if (cells[col].size () > max_lines)
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max_lines = cells[col].size ();
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}
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for (int i = 0; i < max_lines; ++i)
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{
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out += left_margin + (odd ? extra_odd : extra_even);
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for (int col = 0; col < _columns.size (); ++col)
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{
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if (col)
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{
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if (row_color.nontrivial ())
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out += row_color.colorize (intra);
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else
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out += (odd ? intra_odd : intra_even);
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}
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if (i < cells[col].size ())
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out += cells[col][i];
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else
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{
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cell_color = row_color;
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cell_color.blend (_color[row][col]);
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out += cell_color.colorize (std::string (widths[col], ' '));
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}
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}
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out += (odd ? extra_odd : extra_even) + "\n";
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// Stop if the line limit is exceeded.
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if (++_lines >= _truncate_lines && _truncate_lines != 0)
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return out;
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}
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cells.clear ();
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// Stop if the row limit is exceeded.
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if (++_rows >= _truncate_rows && _truncate_rows != 0)
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return out;
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}
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return out;
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}
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////////////////////////////////////////////////////////////////////////////////
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