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• Creating buttons with Imagick

  9 juin 2010, par Mikko Koppanen — Imagick, PHP stuff

  A fellow called kakapo asked me to create a button with Imagick. He had an image of the button and a Photoshop tutorial but unfortunately the tutorial was in Chinese. My Chinese is a bit rusty so it will take a little longer to create that specific button

  The button in this example is created after this tutorial http://xeonfx.com/tutorials/easy-button-tutorial/ (yes, I googled “easy button tutorial”). The code and the button it creates are both very simple but the effect looks really nice.

  Here we go with the code :

  php

  < view plain text >

  1. < ?php
  2.  
  3. /* Create a new Imagick object */
  4. $im = new Imagick() ;
  5.  
  6. /* Create empty canvas */
  7. $im->newImage( 200, 200, "white", "png" ) ;
  8.  
  9. /* Create the object used to draw */
  10. $draw = new ImagickDraw() ;
  11.  
  12. /* Set the button color.
  13.   Changing this value changes the color of the button */
  14. $draw->setFillColor( "#4096EE" ) ;
  15.  
  16. /* Create the outer circle */
  17. $draw->circle( 50, 50, 70, 70 ) ;
  18.  
  19. /* Create the smaller circle on the button */
  20. $draw->setFillColor( "white" ) ;
  21.  
  22. /* Semi-opaque fill */
  23. $draw->setFillAlpha( 0.2 ) ;
  24.  
  25. /* Draw the circle */
  26. $draw->circle( 50, 50, 68, 68 ) ;
  27.  
  28. /* Set the font */
  29. $draw->setFont( "./test1.ttf" ) ;
  30.  
  31. /* This is the alpha value used to annotate */
  32. $draw->setFillAlpha( 0.17 ) ;
  33.  
  34. /* Draw a curve on the button with 17% opaque fill */
  35. $draw->bezier( array(
  36.           array( "x" => 10 , "y" => 25 ),
  37.           array( "x" => 39, "y" => 49 ),
  38.           array( "x" => 60, "y" => 55 ),
  39.           array( "x" => 75, "y" => 70 ),
  40.           array( "x" => 100, "y" => 70 ),
  41.           array( "x" => 100, "y" => 10 ),
  42.          ) ) ;
  43.  
  44. /* Render all pending operations on the image */       
  45. $im->drawImage( $draw ) ;
  46.  
  47. /* Set fill to fully opaque */
  48. $draw->setFillAlpha( 1 ) ;
  49.  
  50. /* Set the font size to 30 */
  51. $draw->setFontSize( 30 ) ;
  52.  
  53. /* The text on the */
  54. $draw->setFillColor( "white" ) ;
  55.  
  56. /* Annotate the text */
  57. $im->annotateImage( $draw, 38, 55, 0, "go" ) ;
  58.  
  59. /* Trim extra area out of the image */
  60. $im->trimImage( 0 ) ;
  61.  
  62. /* Output the image */
  63. header( "Content-Type : image/png" ) ;
  64. echo $im ;
  65.  
  66.  ?>

  And here is a few buttons I created by changing the fill color value :

  

  

  

• Creating a reflection

  9 juin 2010, par Mikko Koppanen — Imagick, PHP stuff

  Here is a simple example of creating a reflection of an image. The reflection is created by flipping the image and overlaying a gradient on it. Then both, the original image and the reflection is overlayed on a canvas.

  This example is created for Imagick 2.1.x but with a little tuning it should work with earlier versions.

  php

  < view plain text >

  1. < ?php
  2.  
  3. /* Read the image */
  4. $im = new Imagick( "strawberry.png" ) ;
  5.  
  6. /* Thumbnail the image */
  7. $im->thumbnailImage( 200, null ) ;
  8.  
  9. /* Create a border for the image */
  10. $im->borderImage( "white", 5, 5 ) ;
  11.  
  12. /* Clone the image and flip it */
  13. $reflection = $im->clone() ;
  14. $reflection->flipImage() ;
  15.  
  16. /* Create gradient. It will be overlayd on the reflection */
  17. $gradient = new Imagick() ;
  18.  
  19. /* Gradient needs to be large enough for the image
  20. and the borders */
  21. $gradient->newPseudoImage( $reflection->getImageWidth() + 10,
  22.               $reflection->getImageHeight() + 10,
  23.               "gradient:transparent-black"
  24.             ) ;
  25.  
  26. /* Composite the gradient on the reflection */
  27. $reflection->compositeImage( $gradient, imagick: :COMPOSITE_OVER, 0, 0 ) ;
  28.  
  29. /* Add some opacity */
  30. $reflection->setImageOpacity( 0.3 ) ;
  31.  
  32. /* Create empty canvas */
  33. $canvas = new Imagick() ;
  34.  
  35. /* Canvas needs to be large enough to hold the both images */
  36. $width = $im->getImageWidth() + 40 ;
  37. $height = ( $im->getImageHeight() * 2 ) + 30 ;
  38. $canvas->newImage( $width, $height, "black", "png" ) ;
  39.  
  40. /* Composite the original image and the reflection on the canvas */
  41. $canvas->compositeImage( $im, imagick: :COMPOSITE_OVER, 20, 10 ) ;
  42. $canvas->compositeImage( $reflection, imagick: :COMPOSITE_OVER,
  43.             20, $im->getImageHeight() + 10 ) ;
  44.  
  45. /* Output the image*/
  46. header( "Content-Type : image/png" ) ;
  47. echo $canvas ;
  48.  
  49.  ?>

  The source image :

  

  And the result :

  

  P.S. Please send me some new images which I can use in these examples

• Utiliser ddUpload si possible

  11 juin 2010

  Renato vient de créer le plugin ddUpload permettant de mettre en ligne des fichiers en HTML5 et javascript.

  Ce type d’upload semble un bon remplacement à l’utilisation de swfupload pour les navigateur permettant ce type d’upload (Firefox >= 3.6 et Google Chrome)