testcases/phpCairo/source-clip.php

   1 <?
   2         $sur = new CairoImageSurface(FORMAT_ARGB32, 12, 12);
   3         $con = new CairoContext($sur);
   4     $source = $sur->createSimilar (
   5                        CONTENT_COLOR_ALPHA,
   6                        12, 12);
   7
   8     $con2 = new CairoContext($source);
   9
  10     /* Fill the source surface with green */
  11
  12     $con2->setSourceRgb ( 0, 1, 0);
  13     $con2->paint ();
  14
  15     /* Draw a blue square in the middle of the source with clipping,
  16      * and leave the clip there. */
  17     $con2->rectangle (
  18              12 / 4, 12 / 4,
  19              12 / 2, 12 / 2);
  20     $con2->clip ();
  21     $con2->setSourceRgb ( 0, 0, 1);
  22     $con2->paint ();
  23
  24     /* Fill the destination surface with solid red (should not appear
  25      * in final result) */
  26     $con->setSourceRgb ( 1, 0, 0);
  27     $con->paint ();
  28
  29     /* Now draw the source surface onto the destination surface */
  30     $con->setSourceSurface ( $source, 0, 0);
  31     $con->paint ();
  32         $sur->writeToPng("source-clip-php.png");
  33
  34
  35 ?>