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Merge pull request #306 from nextcloud/sidebar-preview-text 

Add large sidebar previews for text files
This commit is contained in:
Marius Blüm 2016-07-04 21:36:51 +02:00 committed by GitHub
parent be847398b4 dd337597b3
commit 0481a3eadf
5 changed files with 193 additions and 87 deletions
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20
apps/files/css/detailsView.css
View File

@ -32,17 +32,17 @@
float: left;
}
#app-sidebar .thumbnailContainer.image {
#app-sidebar .thumbnailContainer.large {
margin-left: -15px;
margin-right: -35px; /* 15 + 20 for the close button */
margin-top: -15px;
}
#app-sidebar .thumbnailContainer.image.portrait {
#app-sidebar .thumbnailContainer.large.portrait {
margin: 0; /* if we don't fit the image anyway we give it back the margin */
}
#app-sidebar .image .thumbnail {
#app-sidebar .large .thumbnail {
width:100%;
display:block;
background-repeat: no-repeat;
@ -53,20 +53,28 @@
height: auto;
}
#app-sidebar .image .thumbnail .stretcher {
#app-sidebar .large .thumbnail .stretcher {
content: '';
display: block;
padding-bottom: 56.25%; /* sets height of .thumbnail to 9/16 of the width */
}
#app-sidebar .image.portrait .thumbnail {
#app-sidebar .large.portrait .thumbnail {
background-position: 50% top;
}
#app-sidebar .image.portrait .thumbnail {
#app-sidebar .large.portrait .thumbnail {
background-size: contain;
}
#app-sidebar .large.text {
overflow-y: scroll;
overflow-x: hidden;
padding-top: 15px;
font-size: 80%;
margin-left: 0;
}
#app-sidebar .thumbnail {
width: 75px;
height: 75px;

88
apps/files/js/mainfileinfodetailview.js
View File

@ -57,6 +57,11 @@
*/
_fileActions: null,
/**
* @type {OCA.Files.SidebarPreviewManager}
*/
_previewManager: null,
events: {
'click a.action-favorite': '_onClickFavorite',
'click a.action-default': '_onClickDefaultAction',
@ -81,6 +86,7 @@
if (!this._fileActions) {
throw 'Missing required parameter "fileActions"';
}
this._previewManager = new OCA.Files.SidebarPreviewManager(this._fileList);
},
_onClickPermalink: function() {
@ -158,7 +164,7 @@
var $container = this.$el.find('.thumbnailContainer');
if (!this.model.isDirectory()) {
$iconDiv.addClass('icon-loading icon-32');
this.loadPreview(this.model.getFullPath(), this.model.get('mimetype'), this.model.get('etag'), $iconDiv, $container, this.model.isImage());
this._previewManager.loadPreview(this.model, $iconDiv, $container);
} else {
var iconUrl = this.model.get('icon') || OC.MimeType.getIconUrl('dir');
$iconDiv.css('background-image', 'url("' + iconUrl + '")');
@ -169,86 +175,6 @@
this.$el.empty();
}
this.delegateEvents();
},
loadPreview: function(path, mime, etag, $iconDiv, $container, isImage) {
var maxImageWidth = $container.parent().width() + 50; // 50px for negative margins
var maxImageHeight = maxImageWidth / (16/9);
var smallPreviewSize = 75;
var isLandscape = function(img) {
return img.width > (img.height * 1.2);
};
var isSmall = function(img) {
return (img.width * 1.1) < (maxImageWidth * window.devicePixelRatio);
};
var getTargetHeight = function(img) {
if(isImage) {
var targetHeight = img.height / window.devicePixelRatio;
if (targetHeight <= smallPreviewSize) {
targetHeight = smallPreviewSize;
}
return targetHeight;
}else{
return smallPreviewSize;
}
};
var getTargetRatio = function(img){
var ratio = img.width / img.height;
if (ratio > 16/9) {
return ratio;
} else {
return 16/9;
}
};
this._fileList.lazyLoadPreview({
path: path,
mime: mime,
etag: etag,
y: isImage ? maxImageHeight : smallPreviewSize,
x: isImage ? maxImageWidth : smallPreviewSize,
a: isImage ? 1 : null,
mode: isImage ? 'cover' : null,
callback: function (previewUrl, img) {
$iconDiv.previewImg = previewUrl;
// as long as we only have the mimetype icon, we only save it in case there is no preview
if (!img) {
return;
}
$iconDiv.removeClass('icon-loading icon-32');
var targetHeight = getTargetHeight(img);
if (this.model.isImage() && targetHeight > smallPreviewSize) {
$container.addClass((isLandscape(img) && !isSmall(img))? 'landscape': 'portrait');
$container.addClass('image');
}
// only set background when we have an actual preview
// when we don't have a preview we show the mime icon in the error handler
$iconDiv.css({
'background-image': 'url("' + previewUrl + '")',
height: (targetHeight > smallPreviewSize)? 'auto': targetHeight,
'max-height': isSmall(img)? targetHeight: null
});
var targetRatio = getTargetRatio(img);
$iconDiv.find('.stretcher').css({
'padding-bottom': (100 / targetRatio) + '%'
});
}.bind(this),
error: function () {
$iconDiv.removeClass('icon-loading icon-32');
this.$el.find('.thumbnailContainer').removeClass('image'); //fall back to regular view
$iconDiv.css({
'background-image': 'url("' + $iconDiv.previewImg + '")'
});
OC.Util.scaleFixForIE8($iconDiv);
}.bind(this)
});
}
});

123
apps/files/js/sidebarpreviewmanager.js Normal file
View File

@ -0,0 +1,123 @@
/*
* Copyright (c) 2016
*
* This file is licensed under the Affero General Public License version 3
* or later.
*
* See the COPYING-README file.
*
*/
(function () {
SidebarPreviewManager = function (fileList) {
this._fileList = fileList;
this._previewHandlers = {};
OC.Plugins.attach('OCA.Files.SidebarPreviewManager', this);
};
SidebarPreviewManager.prototype = {
addPreviewHandler: function (mime, handler) {
this._previewHandlers[mime] = handler;
},
getPreviewHandler: function (mime) {
var mimePart = mime.split('/').shift();
if (this._previewHandlers[mime]) {
return this._previewHandlers[mime];
} else if(this._previewHandlers[mimePart]) {
return this._previewHandlers[mimePart];
} else {
return this.fallbackPreview.bind(this);
}
},
loadPreview: function (model, $thumbnailDiv, $thumbnailContainer) {
var handler = this.getPreviewHandler(model.get('mimetype'));
var fallback = this.fallbackPreview.bind(this, model, $thumbnailDiv, $thumbnailContainer);
handler(model, $thumbnailDiv, $thumbnailContainer, fallback);
},
// previews for images and mimetype icons
fallbackPreview: function (model, $thumbnailDiv, $thumbnailContainer) {
var isImage = model.isImage();
var maxImageWidth = $thumbnailContainer.parent().width() + 50; // 50px for negative margins
var maxImageHeight = maxImageWidth / (16 / 9);
var smallPreviewSize = 75;
var isLandscape = function (img) {
return img.width > (img.height * 1.2);
};
var isSmall = function (img) {
return (img.width * 1.1) < (maxImageWidth * window.devicePixelRatio);
};
var getTargetHeight = function (img) {
if (isImage) {
var targetHeight = img.height / window.devicePixelRatio;
if (targetHeight <= smallPreviewSize) {
targetHeight = smallPreviewSize;
}
return targetHeight;
} else {
return smallPreviewSize;
}
};
var getTargetRatio = function (img) {
var ratio = img.width / img.height;
if (ratio > 16 / 9) {
return ratio;
} else {
return 16 / 9;
}
};
this._fileList.lazyLoadPreview({
path: model.getFullPath(),
mime: model.get('mimetype'),
etag: model.get('etag'),
y: isImage ? maxImageHeight : smallPreviewSize,
x: isImage ? maxImageWidth : smallPreviewSize,
a: isImage ? 1 : null,
mode: isImage ? 'cover' : null,
callback: function (previewUrl, img) {
$thumbnailDiv.previewImg = previewUrl;
// as long as we only have the mimetype icon, we only save it in case there is no preview
if (!img) {
return;
}
$thumbnailDiv.removeClass('icon-loading icon-32');
var targetHeight = getTargetHeight(img);
if (isImage && targetHeight > smallPreviewSize) {
$thumbnailContainer.addClass((isLandscape(img) && !isSmall(img)) ? 'landscape' : 'portrait');
$thumbnailContainer.addClass('large');
}
// only set background when we have an actual preview
// when we don't have a preview we show the mime icon in the error handler
$thumbnailDiv.css({
'background-image': 'url("' + previewUrl + '")',
height: (targetHeight > smallPreviewSize) ? 'auto' : targetHeight,
'max-height': isSmall(img) ? targetHeight : null
});
var targetRatio = getTargetRatio(img);
$thumbnailDiv.find('.stretcher').css({
'padding-bottom': (100 / targetRatio) + '%'
});
},
error: function () {
$thumbnailDiv.removeClass('icon-loading icon-32');
$thumbnailContainer.removeClass('image'); //fall back to regular view
$thumbnailDiv.css({
'background-image': 'url("' + $thumbnailDiv.previewImg + '")'
});
}
});
}
};
OCA.Files.SidebarPreviewManager = SidebarPreviewManager;
})();

47
apps/files/js/sidebarpreviewtext.js Normal file
View File

@ -0,0 +1,47 @@
/*
* Copyright (c) 2016
*
* This file is licensed under the Affero General Public License version 3
* or later.
*
* See the COPYING-README file.
*
*/
(function () {
var SidebarPreview = function () {
};
SidebarPreview.prototype = {
attach: function (manager) {
manager.addPreviewHandler('text', this.handlePreview.bind(this));
},
handlePreview: function (model, $thumbnailDiv, $thumbnailContainer, fallback) {
console.log(model);
var previewWidth = $thumbnailContainer.parent().width() + 50; // 50px for negative margins
var previewHeight = previewWidth / (16 / 9);
this.getFileContent(model.getFullPath()).then(function (content) {
$thumbnailDiv.removeClass('icon-loading icon-32');
$thumbnailContainer.addClass('large');
$thumbnailContainer.addClass('text');
var $textPreview = $('<pre/>').text(content);
$thumbnailDiv.children('.stretcher').remove();
$thumbnailDiv.append($textPreview);
$thumbnailContainer.css("max-height", previewHeight);
}, function () {
fallback();
});
},
getFileContent: function (path) {
console.log(path);
var url = OC.linkToRemoteBase('files' + path);
console.log(url);
return $.get(url);
}
};
OC.Plugins.register('OCA.Files.SidebarPreviewManager', new SidebarPreview());
})();

2
apps/files/lib/Controller/ViewController.php
View File

@ -174,6 +174,8 @@ class ViewController extends Controller {
\OCP\Util::addScript('files', 'favoritesplugin');
\OCP\Util::addScript('files', 'detailfileinfoview');
\OCP\Util::addScript('files', 'sidebarpreviewmanager');
\OCP\Util::addScript('files', 'sidebarpreviewtext');
\OCP\Util::addScript('files', 'detailtabview');
\OCP\Util::addScript('files', 'mainfileinfodetailview');
\OCP\Util::addScript('files', 'detailsview');