1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
<?php
//
// ggcov - A GTK frontend for exploring gcov coverage data
// Copyright (c) 2005 Greg Banks <gnb@users.sourceforge.net>
//
// 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 2 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, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// $Id: dviewport.php,v 1.2 2010-05-09 05:37:14 gnb Exp $
//
require_once 'ggcov/lib/cov.php';
class cov_dviewport_page extends cov_page
{
var $env_;
var $width_;
var $height_;
var $zoom_;
var $panx_;
var $pany_;
var $format_;
function cov_dviewport_page($e)
{
$this->env_ = $e;
}
function get_integer($get, $name, $def)
{
if (array_key_exists($name, $get) && cov_valid::integer($get[$name]))
$x = (int)$get[$name];
else
$x = $def;
return $x;
}
function get_floating($get, $name, $def)
{
if (array_key_exists($name, $get) && cov_valid::floating($get[$name]))
$x = (double)$get[$name];
else
$x = $def;
return $x;
}
function parse_args($get)
{
$cb = $this->env_->cb_;
$this->width_ = $this->get_integer($get, 'w', 64);
$this->height_ = $this->get_integer($get, 'h', 64);
$this->zoom_ = $this->get_floating($get, 'z', 1.0);
$this->panx_ = $this->get_floating($get, 'px', 0.0);
$this->pany_ = $this->get_floating($get, 'py', 0.0);
// We get passed the diagram name in 'd' but for now
// we ignore it. It will be useful later to generate
// a thumbnail to use as the viewport background.
if (function_exists('imagegif'))
$this->format_ = 'gif';
else if (function_exists('imagepng'))
$this->format_ = 'png';
else
$cb->fatal("Can't find any image format output function");
}
function content_type()
{
return "image/$this->format_";
}
function title()
{
return "Diagram Viewport"; // never seen
}
function render()
{
$cb = $this->env_->cb_;
$img = imagecreate($this->width_, $this->height_);
// allocate colours
$cwhite = imagecolorallocate($img, 0xff, 0xff, 0xff);
$cblack = imagecolorallocate($img, 0x00, 0x00, 0x00);
$cpurple = imagecolorallocate($img, 0x7d, 0x7d, 0x94);
// fill with white
imagefilledrectangle($img, 0, 0,
$this->width_-1, $this->height_-1,
$cwhite);
// draw a purple rectangle to represent the viewport
$x = ($this->width_-2) * $this->panx_ + 1;
$y = ($this->height_-2) * $this->pany_ + 1;
$w = ($this->width_-2) / $this->zoom_;
$h = ($this->height_-2) / $this->zoom_;
imagefilledrectangle($img, $x, $y, $x+$w, $y+$h, $cpurple);
// draw a black border; do this last to avoid having to clip
imagerectangle($img, 0, 0,
$this->width_-1, $this->height_-1,
$cblack);
header("Content-type: image/$this->format_");
switch ($this->format_)
{
case 'gif':
imagegif($img);
break;
case 'png':
imagepng($img);
break;
}
imagedestroy($img);
}
}
?>
|
