From 4aa85e6a50206e4043ee997fc4314eb6ab842237 Mon Sep 17 00:00:00 2001
From: Chris Hallberg <crhallberg@gmail.com>
Date: Fri, 18 Jul 2014 11:25:46 -0400
Subject: [PATCH] Added solid dynamic covers.
---
config/vufind/config.ini | 10 +-
module/VuFind/src/VuFind/Cover/Generator.php | 96 ++++++++++++++++++--
module/VuFind/src/VuFind/Cover/Loader.php | 10 +-
3 files changed, 103 insertions(+), 13 deletions(-)
diff --git a/config/vufind/config.ini b/config/vufind/config.ini
index 6c60334db29..dfbcf642fb5 100644
--- a/config/vufind/config.ini
+++ b/config/vufind/config.ini
@@ -505,11 +505,13 @@ database = mysql://root@localhost/vufind
; some services will never have images cached even if caching is enabled.
coverimagesCache = true
-; This setting controls the image to display when no book cover is available.
-; If makeDynamicCovers is true and the GD library is installed, VuFind will draw
-; cover images on the fly. Otherwise, you can use noCoverAvailableImage to specify a
-; path relative to the base of your theme directory for a static image to display.
+; These settings control the image to display when no book cover is available.
+; If makeDynamicCovers is not false and the GD library is installed, VuFind will draw
+; cover images on the fly. Possible values: false, solid, grid
;makeDynamicCovers = true
+
+; Otherwise, you can use noCoverAvailableImage to specify a
+; path relative to the base of your theme directory for a static image to display.
noCoverAvailableImage = images/noCover2.gif
; You can select from Syndetics, SyndeticsPlus, Amazon Editorial, Amazon, Booksite
diff --git a/module/VuFind/src/VuFind/Cover/Generator.php b/module/VuFind/src/VuFind/Cover/Generator.php
index f06aa6b308e..6de71005f0b 100644
--- a/module/VuFind/src/VuFind/Cover/Generator.php
+++ b/module/VuFind/src/VuFind/Cover/Generator.php
@@ -64,6 +64,7 @@ class Generator
{
$this->themeTools = $themeTools;
$default = array(
+ 'mode' => 'grid',
'authorFont' => 'DroidSerif-Bold.ttf',
'fontSize' => 7,
'lightness' => 220,
@@ -94,6 +95,87 @@ class Generator
* @return string contents of image file
*/
public function generate($title, $author, $callnumber = null)
+ {
+ if ($this->settings->mode == 'solid') {
+ return $this->generateSolid($title, $author, $callnumber);
+ } else {
+ return $this->generateGrid($title, $author, $callnumber);
+ }
+ }
+
+ /**
+ * Generates a solid color background, ala Google
+ *
+ * @param string $title Title of the book
+ * @param string $author Author of the book
+ * @param string $callnumber Callnumber of the book
+ *
+ * @return string contents of image file
+ */
+ protected function generateSolid($title, $author, $callnumber)
+ {
+ $half = $this->settings->size/2;
+ // Create image
+ if (!($im = imagecreate($this->settings->size, $this->settings->size))) {
+ throw new \Exception("Cannot Initialize new GD image stream");
+ }
+ // this->white backdrop
+ $this->white = imagecolorallocate($im, 255, 255, 255);
+ // this->black
+ $this->black = imagecolorallocate($im, 0, 0, 0);
+
+ // Generate seed from callnumber, title back up
+ $seed = $this->createSeed($title, $callnumber);
+ // Number to color, hsb to control saturation and lightness
+ $color = $this->makeHSBColor(
+ $im,
+ $seed%256,
+ $this->settings->saturation,
+ $this->settings->lightness
+ );
+
+ // Fill solid color
+ imagefilledrectangle(
+ $im,
+ 0,
+ 0,
+ $this->settings->size,
+ $this->settings->size,
+ $color
+ );
+
+ $this->drawText(
+ $im,
+ strtoupper($title[0]),
+ $half,
+ $half+30,
+ $this->settings->titleFont,
+ 60,
+ $this->white
+ );
+
+ // Output png CHECK THE PARAM
+ ob_start();
+ imagepng($im);
+ $img = ob_get_contents();
+ ob_end_clean();
+
+ // Clear memory
+ imagedestroy($im);
+ // GTFO
+ return $img;
+ }
+
+ /**
+ * Generates a grid of colors as primary feature
+ *
+ * @param string $title Title of the book
+ * @param string $author Author of the book
+ * @param string $callnumber Callnumber of the book
+ *
+ * @return string contents of image file
+ */
+ protected function generateGrid($title, $author, $callnumber)
{
// Set up common variables
$half = $this->settings->size/2;
@@ -351,7 +433,7 @@ class Generator
* @return void
*/
protected function drawText($im, $text, $x, $y,
- $font, $fontSize, $mcolor, $scolor, $align = null
+ $font, $fontSize, $mcolor, $scolor=false, $align=null
) {
$txtWidth = $this->textWidth(
$text,
@@ -376,11 +458,13 @@ class Generator
$x = $this->settings->size-$txtWidth-$x;
}
- // Generate 5 lines of text, 4 offset in a border color
- imagettftext($im, $fontSize, 0, $x, $y+1, $scolor, $font, $text);
- imagettftext($im, $fontSize, 0, $x, $y-1, $scolor, $font, $text);
- imagettftext($im, $fontSize, 0, $x+1, $y, $scolor, $font, $text);
- imagettftext($im, $fontSize, 0, $x-1, $y, $scolor, $font, $text);
+ // Generate 5 lines of text, 4 offset in a border color
+ if ($scolor) {
+ imagettftext($im, $fontSize, 0, $x, $y+1, $scolor, $font, $text);
+ imagettftext($im, $fontSize, 0, $x, $y-1, $scolor, $font, $text);
+ imagettftext($im, $fontSize, 0, $x+1, $y, $scolor, $font, $text);
+ imagettftext($im, $fontSize, 0, $x-1, $y, $scolor, $font, $text);
+ }
// 1 centered in main color
imagettftext($im, $fontSize, 0, $x, $y, $mcolor, $font, $text);
}
diff --git a/module/VuFind/src/VuFind/Cover/Loader.php b/module/VuFind/src/VuFind/Cover/Loader.php
index fa1f2e45d85..ac5941784ba 100644
--- a/module/VuFind/src/VuFind/Cover/Loader.php
+++ b/module/VuFind/src/VuFind/Cover/Loader.php
@@ -230,7 +230,7 @@ class Loader implements \Zend\Log\LoggerAwareInterface
}
return $this->contentType;
}
-
+
/**
* Get Cover Generator Object
*
@@ -238,8 +238,12 @@ class Loader implements \Zend\Log\LoggerAwareInterface
*/
public function getCoverGenerator()
{
- return new \VuFind\Cover\Generator($this->themeTools);
+ return new \VuFind\Cover\Generator(
+ $this->themeTools,
+ array('mode'=>$this->config->Content->makeDynamicCovers)
+ );
}
+
/**
* Load an image given an ISBN and/or content type.
*
@@ -277,7 +281,7 @@ class Loader implements \Zend\Log\LoggerAwareInterface
&& !$this->fetchFromContentType()
) {
if (isset($this->config->Content->makeDynamicCovers)
- && true == $this->config->Content->makeDynamicCovers
+ && false !== $this->config->Content->makeDynamicCovers
) {
$this->image = $this->getCoverGenerator()
->generate($title, $author, $callnumber);
--
GitLab