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Begin work on preview generator

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Starbeamrainbowlabs 2015-10-22 09:56:42 +01:00
parent 19c4e36754
commit 612bf0ce74
4 changed files with 127 additions and 3 deletions
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64
build/index.php
View file

@ -193,6 +193,10 @@ $settings->upload_allowed_file_types = [
// http://pastebin.com/mjM3zKjz
$settings->mime_extension_mappings_location = "/etc/mime.types";
// The minimum and maximum sizes of generated preview images in pixels.
$settings->min_preview_size = 1;
$settings->max_preview_size = 2048;
// A string of css to include. Will be included in the <head> of every page
// inside a <style> tag. This may also be a url - urls will be referenced via a
// <link rel='stylesheet' /> tag.
@ -1339,6 +1343,7 @@ register_module([
$entry->lasteditor = $env->user;
$entry->uploadedfile = true;
$entry->uploadedfilepath = $new_filename;
$entry->uploadedfilemime = $mime_type;
// Add the new entry to the pageindex
// Assign the new entry to the image's filepath as that
// should be the page name.
@ -1353,7 +1358,47 @@ register_module([
}
});
add_action("preview", function() {
global $settings;
global $settings, $env, $pageindex;
$filepath = $pageindex->{$env->page}->uploadedfilepath;
$mime_type = $pageindex->{$env->page}->uploadedfilemime;
switch(substr($mime_type, 0, strpos($mime_type, "/")))
{
case "image":
$preview = false;
switch($mime_type)
{
case "image/jpeg":
$preview = imagecreatefromjpeg($filepath);
break;
case "image/gif":
$preview = imagecreatefromgif($filepath);
break;
case "image/png":
$preview = imagecreatefrompng($filepath);
break;
case "image/webp":
$preview = imagecreatefromwebp($filepath);
break;
default:
$preview = errorimage("Unsupported image type.");
break;
}
$aspect_ratio = imagesx($preview) / imagesy($preview);
$target_width = intval($_GET["size"]);
if($target_width < $settings->min_preview_size)
$target_width = $settings->min_preview_size;
if($target_width > $settings->max_preview_size)
$target_width = $settings->max_preview_size;
$target_height = $target_width;
// Todo Scale image to fit inside size.
break;
}
// todo render a preview here
@ -1403,6 +1448,23 @@ function parse_size($size) {
}
}
function errorimage($text)
{
$width = 640;
$height = 480;
$image = imagecreatetruecolor($width, $height);
imagefill($image, 0, 0, imagecolorallocate($image, 238, 232, 242)); // Set the background to #eee8f2
$fontwidth = imagefontwidth(3);
imagetext($image, 3,
($width / 2) - (($fontwidth * strlen($text)) / 2),
($height / 2) - (imagefontheight(3) / 2),
$text,
imagecolorallocate($image, 17, 17, 17) // #111111
);
return $image;
}

2
module_index.json
View file

@ -50,7 +50,7 @@
"author": "Starbeamrainbowlabs",
"description": "Adds the ability to upload files to Pepperminty Wiki. Uploaded files act as pages and have the special 'File:' prefix.",
"id": "feature-upload",
"lastupdate": 1445500988,
"lastupdate": 1445504176,
"optional": false
},
{

60
modules/feature-upload.php
View file

@ -118,6 +118,7 @@ register_module([
$entry->lasteditor = $env->user;
$entry->uploadedfile = true;
$entry->uploadedfilepath = $new_filename;
$entry->uploadedfilemime = $mime_type;
// Add the new entry to the pageindex
// Assign the new entry to the image's filepath as that
// should be the page name.
@ -132,7 +133,47 @@ register_module([
}
});
add_action("preview", function() {
global $settings;
global $settings, $env, $pageindex;
$filepath = $pageindex->{$env->page}->uploadedfilepath;
$mime_type = $pageindex->{$env->page}->uploadedfilemime;
switch(substr($mime_type, 0, strpos($mime_type, "/")))
{
case "image":
$preview = false;
switch($mime_type)
{
case "image/jpeg":
$preview = imagecreatefromjpeg($filepath);
break;
case "image/gif":
$preview = imagecreatefromgif($filepath);
break;
case "image/png":
$preview = imagecreatefrompng($filepath);
break;
case "image/webp":
$preview = imagecreatefromwebp($filepath);
break;
default:
$preview = errorimage("Unsupported image type.");
break;
}
$aspect_ratio = imagesx($preview) / imagesy($preview);
$target_width = intval($_GET["size"]);
if($target_width < $settings->min_preview_size)
$target_width = $settings->min_preview_size;
if($target_width > $settings->max_preview_size)
$target_width = $settings->max_preview_size;
$target_height = $target_width;
// Todo Scale image to fit inside size.
break;
}
// todo render a preview here
@ -182,4 +223,21 @@ function parse_size($size) {
}
}
function errorimage($text)
{
$width = 640;
$height = 480;
$image = imagecreatetruecolor($width, $height);
imagefill($image, 0, 0, imagecolorallocate($image, 238, 232, 242)); // Set the background to #eee8f2
$fontwidth = imagefontwidth(3);
imagetext($image, 3,
($width / 2) - (($fontwidth * strlen($text)) / 2),
($height / 2) - (imagefontheight(3) / 2),
$text,
imagecolorallocate($image, 17, 17, 17) // #111111
);
return $image;
}
?>

4
settings.fragment.php
View file

@ -190,6 +190,10 @@ $settings->upload_allowed_file_types = [
// http://pastebin.com/mjM3zKjz
$settings->mime_extension_mappings_location = "/etc/mime.types";
// The minimum and maximum sizes of generated preview images in pixels.
$settings->min_preview_size = 1;
$settings->max_preview_size = 2048;
// A string of css to include. Will be included in the <head> of every page
// inside a <style> tag. This may also be a url - urls will be referenced via a
// <link rel='stylesheet' /> tag.