ultimix
graph_utilities.php
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1 <?php
2 
3  /*
4  * This source code is a part of the Ultimix Project.
5  * It is distributed under BSD license. All other third side source code (like tinyMCE) is distributed under
6  * it's own license wich could be found from the corresponding files or sources.
7  * This source code is provided "as is" without any warranties or garanties.
8  *
9  * Have a nice day!
10  *
11  * @url http://ultimix.sorceforge.net
12  *
13  * @author Alexey "gdever" Dodonov
14  */
15 
26  class graph_utilities_1_0_0{
27 
38  var $GraphCore = false;
39  var $Security = false;
40 
51  function __construct()
52  {
53  try
54  {
55  $this->GraphCore = get_package( 'graph::graph_core' , 'last' , __FILE__ );
56  $this->Security = get_package( 'security' , 'last' , __FILE__ );
57  }
58  catch( Exception $e )
59  {
60  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
61  }
62  }
63 
78  private function set_width_height( &$Graph )
79  {
80  try
81  {
82  $Width = $this->Security->get_gp( 'width' , 'integer' , 640 );
83  $Height = $this->Security->get_gp( 'height' , 'integer' , 480 );
84 
85  $Graph->set( 'Width' , $Width );
86  $Graph->set( 'Height' , $Height );
87  }
88  catch( Exception $e )
89  {
90  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
91  }
92  }
93 
112  private function prepare_canvas( &$Graph )
113  {
114  try
115  {
116  $Graph->Img = imagecreatetruecolor( $Graph->Width , $Graph->Height );
117 
118  if( $Graph->Img === false )
119  {
120  throw( new Exception( 'An error occured while image creation' ) );
121  }
122  }
123  catch( Exception $e )
124  {
125  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
126  }
127  }
128 
163  private function compile_client_width_height( $Graph , $ClientX = 20 , $ClientY = 20 ,
164  $Width = 0 , $Height = 0 )
165  {
166  try
167  {
168  $Graph->ClientX = intval( $ClientX );
169  $Graph->ClientY = intval( $ClientY );
170 
171  if( $Width === 0 )
172  {
173  $Graph->ClientWidth = $Graph->Width - 2 * $Graph->ClientX;
174  }
175  else
176  {
177  $Graph->ClientWidth = intval( $Width );
178  }
179 
180  if( $Height === 0 )
181  {
182  $Graph->ClientHeight = $Graph->Height - 2 * $Graph->ClientY;
183  }
184  else
185  {
186  $Graph->ClientHeight = intval( $Height );
187  }
188  }
189  catch( Exception $e )
190  {
191  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
192  }
193  }
194 
213  private function init_client_area( &$Graph )
214  {
215  try
216  {
217  $ClientX = $this->Security->get_gp( 'client_x' , 'integer' , 50 );
218  $ClientY = $this->Security->get_gp( 'client_y' , 'integer' , 20 );
219 
220  $ClientWidth = $this->Security->get_gp( 'client_width' , 'integer' , $Graph->Width - 70 );
221  $ClientHeight = $this->Security->get_gp( 'client_height' , 'integer' , $Graph->Height - 40 );
222 
223  $this->compile_client_width_height( $Graph , $ClientX , $ClientY , $ClientWidth , $ClientHeight );
224  }
225  catch( Exception $e )
226  {
227  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
228  }
229  }
230 
253  function fill_graph_area( &$Graph , $GraphAreaColor )
254  {
255  try
256  {
257  $GraphAreaColor = intval( $GraphAreaColor );
258 
259  $GraphAreaColor = $this->GraphCore->get_color_from_hex( $Graph->Img , $GraphAreaColor );
260 
261  $Res = imagefilledrectangle(
262  $Graph->Img , $Graph->ClientX , $Graph->Height - $Graph->ClientY ,
263  $Graph->ClientX + $Graph->ClientWidth , $Graph->Height - $Graph->ClientHeight - $Graph->ClientY ,
264  $GraphAreaColor
265  );
266 
267  if( $Res === false )
268  {
269  throw( new Exception( 'An error occured while filling client area' ) );
270  }
271  }
272  catch( Exception $e )
273  {
274  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
275  }
276  }
277 
300  private function draw_vertical_grid_lines( $Graph , $Color )
301  {
302  try
303  {
304  $dx = ( $Graph->ClientWidth - $Graph->MarginLeft - $Graph->MarginRight ) / $Graph->StepsX;
305  for( $i = 0 ; $i <= $Graph->StepsX ; $i++ )
306  {
307  imageline(
308  $Graph->Img , $Graph->ClientX + $dx * $i + $Graph->MarginLeft ,
309  $Graph->Height - $Graph->ClientY , $Graph->MarginLeft + $Graph->ClientX + $dx * $i ,
310  $Graph->Height - $Graph->ClientY - $Graph->ClientHeight , $Color
311  );
312  }
313  }
314  catch( Exception $e )
315  {
316  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
317  }
318  }
319 
342  private function draw_horizontal_grid_lines( $Graph , $Color )
343  {
344  try
345  {
346  $dy = ( $Graph->ClientHeight - $Graph->MarginTop - $Graph->MarginBottom ) / $Graph->StepsY;
347  for( $i = 0 ; $i <= $Graph->StepsY ; $i++ )
348  {
349  imageline(
350  $Graph->Img , $Graph->ClientX , $Graph->MarginTop + $Graph->ClientY + $dy * $i ,
351  $Graph->ClientX + $Graph->ClientWidth , $Graph->MarginTop + $Graph->ClientY + $dy * $i , $Color
352  );
353  }
354  }
355  catch( Exception $e )
356  {
357  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
358  }
359  }
360 
383  function draw_grid( $Graph , $Color = 0xeeeeee )
384  {
385  try
386  {
387  $Color = $this->GraphCore->get_color_from_hex( $Graph->Img , $Color );
388 
389  $this->draw_vertical_grid_lines( $Graph , $Color );
390 
391  $this->draw_horizontal_grid_lines( $Graph , $Color );
392  }
393  catch( Exception $e )
394  {
395  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
396  }
397  }
398 
425  function draw_coordinates( $Graph , $X = 0 , $Y = 0 )
426  {
427  try
428  {
429  if( $Graph->Img === false )
430  {
431  $Graph->draw_client_area();
432  }
433 
434  $Graph->CoordX = $X = intval( $X );
435  $Graph->CoordY = $Y = intval( $Y );
436 
437  $BlackColor = imagecolorallocate( $Graph->Img , 0 , 0 , 0 );
438 
439  imageline(
440  $Graph->Img , $Graph->ClientX , $Graph->Height - $Graph->ClientY - $Y ,
441  $Graph->ClientX + $Graph->ClientWidth , $Graph->Height - $Graph->ClientY - $Y , $BlackColor
442  );
443 
444  imageline(
445  $Graph->Img , $Graph->ClientX + $X , $Graph->Height - $Graph->ClientY , $Graph->ClientX + $X ,
446  $Graph->Height - $Graph->ClientY - $Graph->ClientHeight , $BlackColor
447  );
448  }
449  catch( Exception $e )
450  {
451  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
452  }
453  }
454 
469  function prepare_graph_area( &$Graph )
470  {
471  try
472  {
473  $this->set_width_height( $Graph );
474 
475  $this->prepare_canvas( $Graph );
476 
477  $BackgroundColor = $this->Security->get_gp( 'background_color' , 'integer' , 0xeeeeee );
478  $this->GraphCore->fill_background( $Graph->Img , $BackgroundColor );
479 
480  $this->init_client_area( $Graph );
481 
482  $GraphAreaColor = $this->Security->get_gp( 'graph_area_color' , 'integer' , 0xffffff );
483  $this->fill_graph_area( $Graph , $GraphAreaColor );
484 
485  $this->draw_grid( $Graph );
486  $this->draw_coordinates( $Graph );
487  }
488  catch( Exception $e )
489  {
490  $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
491  }
492  }
493  }
494 
495 ?>