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<?php
/*
Phoronix Test Suite
URLs: http://www.phoronix.com, http://www.phoronix-test-suite.com/
Copyright (C) 2008, Phoronix Media
Copyright (C) 2008, Michael Larabel
pts_LineGraph.php: The line graph object that extends pts_Graph.php.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
class pts_LineGraph extends pts_CustomGraph
{
public function __construct($Title, $SubTitle, $YTitle)
{
parent::__construct($Title, $SubTitle, $YTitle);
$this->graph_type = "LINE_GRAPH";
}
protected function render_graph_identifiers()
{
$identifier_count = count($this->graph_identifiers) + 1;
$graph_width = $this->graph_left_end - $this->graph_left_start;
$identifier_width = ($this->graph_left_end - $this->graph_left_start) / $identifier_count;
$px_from_top_start = $this->graph_top_end - 5;
$px_from_top_end = $this->graph_top_end + 5;
$longest_string = $this->find_longest_string($this->graph_identifiers);
$font_size = $this->graph_font_size_identifiers;
while($this->return_ttf_string_width($longest_string, $this->graph_font, $font_size) > ($identifier_width - 2))
$font_size -= 0.5;
for($i = 0; $i < ($identifier_count - 1); $i++)
{
$px_from_left = $this->graph_left_start + ($identifier_width * ($i + 1));
imageline($this->graph_image, $px_from_left, $px_from_top_start, $px_from_left, $px_from_top_end, $this->graph_color_notches);
$this->gd_write_text_center($this->graph_identifiers[$i], $font_size, $this->graph_color_headers, $px_from_left, $px_from_top_end + 2);
}
}
protected function renderGraphLines()
{
$identifier_count = count($this->graph_identifiers) + 1;
$graph_width = $this->graph_left_end - $this->graph_left_start;
$identifier_width = ($this->graph_left_end - $this->graph_left_start) / $identifier_count;
for($i_o = 0; $i_o < count($this->graph_data); $i_o++)
{
$previous_placement = -1;
$previous_offset = -1;
$paint_color = $this->next_paint_color();
$point_counter = count($this->graph_data[$i_o]);
for($i = 0; $i < $point_counter; $i++)
{
$value = $this->graph_data[$i_o][$i];
$value_plot_top = $this->graph_top_end + 1 - round(($value / $this->graph_maximum_value) * ($this->graph_top_end - $this->graph_top_start));
$px_from_left = $this->graph_left_start + ($identifier_width * ($i + 1));
if($previous_placement != -1 && $previous_offset != -1)
{
imageline($this->graph_image, $previous_offset, $previous_placement, $px_from_left, $value_plot_top, $paint_color);
imageline($this->graph_image, $previous_offset, $previous_placement + 1, $px_from_left, $value_plot_top + 1, $paint_color);
}
if($i == 0)
{
imageline($this->graph_image, $this->graph_left_start + 1, $value_plot_top, $px_from_left, $value_plot_top, $paint_color);
imageline($this->graph_image, $this->graph_left_start + 1, $value_plot_top + 1, $px_from_left, $value_plot_top + 1, $paint_color);
}
else if($i == ($point_counter - 1))
{
imageline($this->graph_image, $px_from_left, $value_plot_top, $this->graph_left_end - 1, $value_plot_top, $paint_color);
imageline($this->graph_image, $px_from_left, $value_plot_top + 1, $this->graph_left_end - 1, $value_plot_top + 1, $paint_color);
}
if($point_counter < 20)
$this->render_graph_pointer($px_from_left, $value_plot_top);
$previous_placement = $value_plot_top;
$previous_offset = $px_from_left;
}
}
}
protected function render_graph_result()
{
$this->renderGraphLines();
}
protected function render_graph_pointer($x, $y)
{
imageline($this->graph_image, $x - 5, $y - 5, $x + 5, $y + 5, $this->graph_color_notches);
imageline($this->graph_image, $x + 5, $y - 5, $x - 5, $y + 5, $this->graph_color_notches);
imagefilledrectangle($this->graph_image, $x - 2, $y - 2, $x + 2, $y + 2, $this->graph_color_notches);
}
}
?>
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