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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
|
<?php
/**
* PHPExcel
*
* Copyright (c) 2006 - 2012 PHPExcel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* @category PHPExcel
* @package PHPExcel_Shared
* @copyright Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
* @version 1.7.8, 2012-10-12
*/
/**
* PHPExcel_Shared_Drawing
*
* @category PHPExcel
* @package PHPExcel_Shared
* @copyright Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
*/
class PHPExcel_Shared_Drawing
{
/**
* Convert pixels to EMU
*
* @param int $pValue Value in pixels
* @return int Value in EMU
*/
public static function pixelsToEMU($pValue = 0) {
return round($pValue * 9525);
}
/**
* Convert EMU to pixels
*
* @param int $pValue Value in EMU
* @return int Value in pixels
*/
public static function EMUToPixels($pValue = 0) {
if ($pValue != 0) {
return round($pValue / 9525);
} else {
return 0;
}
}
/**
* Convert pixels to column width. Exact algorithm not known.
* By inspection of a real Excel file using Calibri 11, one finds 1000px ~ 142.85546875
* This gives a conversion factor of 7. Also, we assume that pixels and font size are proportional.
*
* @param int $pValue Value in pixels
* @param PHPExcel_Style_Font $pDefaultFont Default font of the workbook
* @return int Value in cell dimension
*/
public static function pixelsToCellDimension($pValue = 0, PHPExcel_Style_Font $pDefaultFont) {
// Font name and size
$name = $pDefaultFont->getName();
$size = $pDefaultFont->getSize();
if (isset(PHPExcel_Shared_Font::$defaultColumnWidths[$name][$size])) {
// Exact width can be determined
$colWidth = $pValue
* PHPExcel_Shared_Font::$defaultColumnWidths[$name][$size]['width']
/ PHPExcel_Shared_Font::$defaultColumnWidths[$name][$size]['px'];
} else {
// We don't have data for this particular font and size, use approximation by
// extrapolating from Calibri 11
$colWidth = $pValue * 11
* PHPExcel_Shared_Font::$defaultColumnWidths['Calibri'][11]['width']
/ PHPExcel_Shared_Font::$defaultColumnWidths['Calibri'][11]['px'] / $size;
}
return $colWidth;
}
/**
* Convert column width from (intrinsic) Excel units to pixels
*
* @param float $pValue Value in cell dimension
* @param PHPExcel_Style_Font $pDefaultFont Default font of the workbook
* @return int Value in pixels
*/
public static function cellDimensionToPixels($pValue = 0, PHPExcel_Style_Font $pDefaultFont) {
// Font name and size
$name = $pDefaultFont->getName();
$size = $pDefaultFont->getSize();
if (isset(PHPExcel_Shared_Font::$defaultColumnWidths[$name][$size])) {
// Exact width can be determined
$colWidth = $pValue
* PHPExcel_Shared_Font::$defaultColumnWidths[$name][$size]['px']
/ PHPExcel_Shared_Font::$defaultColumnWidths[$name][$size]['width'];
} else {
// We don't have data for this particular font and size, use approximation by
// extrapolating from Calibri 11
$colWidth = $pValue * $size
* PHPExcel_Shared_Font::$defaultColumnWidths['Calibri'][11]['px']
/ PHPExcel_Shared_Font::$defaultColumnWidths['Calibri'][11]['width'] / 11;
}
// Round pixels to closest integer
$colWidth = (int) round($colWidth);
return $colWidth;
}
/**
* Convert pixels to points
*
* @param int $pValue Value in pixels
* @return int Value in points
*/
public static function pixelsToPoints($pValue = 0) {
return $pValue * 0.67777777;
}
/**
* Convert points to pixels
*
* @param int $pValue Value in points
* @return int Value in pixels
*/
public static function pointsToPixels($pValue = 0) {
if ($pValue != 0) {
return (int) ceil($pValue * 1.333333333);
} else {
return 0;
}
}
/**
* Convert degrees to angle
*
* @param int $pValue Degrees
* @return int Angle
*/
public static function degreesToAngle($pValue = 0) {
return (int)round($pValue * 60000);
}
/**
* Convert angle to degrees
*
* @param int $pValue Angle
* @return int Degrees
*/
public static function angleToDegrees($pValue = 0) {
if ($pValue != 0) {
return round($pValue / 60000);
} else {
return 0;
}
}
/**
* Create a new image from file. By alexander at alexauto dot nl
*
* @link http://www.php.net/manual/en/function.imagecreatefromwbmp.php#86214
* @param string $filename Path to Windows DIB (BMP) image
* @return resource
*/
public static function imagecreatefrombmp($p_sFile)
{
// Load the image into a string
$file = fopen($p_sFile,"rb");
$read = fread($file,10);
while(!feof($file)&&($read<>""))
$read .= fread($file,1024);
$temp = unpack("H*",$read);
$hex = $temp[1];
$header = substr($hex,0,108);
// Process the header
// Structure: http://www.fastgraph.com/help/bmp_header_format.html
if (substr($header,0,4)=="424d")
{
// Cut it in parts of 2 bytes
$header_parts = str_split($header,2);
// Get the width 4 bytes
$width = hexdec($header_parts[19].$header_parts[18]);
// Get the height 4 bytes
$height = hexdec($header_parts[23].$header_parts[22]);
// Unset the header params
unset($header_parts);
}
// Define starting X and Y
$x = 0;
$y = 1;
// Create newimage
$image = imagecreatetruecolor($width,$height);
// Grab the body from the image
$body = substr($hex,108);
// Calculate if padding at the end-line is needed
// Divided by two to keep overview.
// 1 byte = 2 HEX-chars
$body_size = (strlen($body)/2);
$header_size = ($width*$height);
// Use end-line padding? Only when needed
$usePadding = ($body_size>($header_size*3)+4);
// Using a for-loop with index-calculation instaid of str_split to avoid large memory consumption
// Calculate the next DWORD-position in the body
for ($i=0;$i<$body_size;$i+=3)
{
// Calculate line-ending and padding
if ($x>=$width)
{
// If padding needed, ignore image-padding
// Shift i to the ending of the current 32-bit-block
if ($usePadding)
$i += $width%4;
// Reset horizontal position
$x = 0;
// Raise the height-position (bottom-up)
$y++;
// Reached the image-height? Break the for-loop
if ($y>$height)
break;
}
// Calculation of the RGB-pixel (defined as BGR in image-data)
// Define $i_pos as absolute position in the body
$i_pos = $i*2;
$r = hexdec($body[$i_pos+4].$body[$i_pos+5]);
$g = hexdec($body[$i_pos+2].$body[$i_pos+3]);
$b = hexdec($body[$i_pos].$body[$i_pos+1]);
// Calculate and draw the pixel
$color = imagecolorallocate($image,$r,$g,$b);
imagesetpixel($image,$x,$height-$y,$color);
// Raise the horizontal position
$x++;
}
// Unset the body / free the memory
unset($body);
// Return image-object
return $image;
}
}
|
