RetroZilla/browser/components/shell/content/setDesktopBackground.js
2015-10-20 23:03:22 -04:00

254 lines
8.4 KiB
JavaScript

# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is Mozilla Firebird about dialog.
#
# The Initial Developer of the Original Code is
# Blake Ross (blake@blakeross.com).
# Portions created by the Initial Developer are Copyright (C) 2002
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Blake Ross <blake@blakeross.com>
# Ben Goodger <ben@mozilla.org>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the LGPL or the GPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****
const kXUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
const kIShellService = Components.interfaces.nsIShellService;
#ifdef XP_MACOSX
const kIMacShellService = Components.interfaces.nsIMacShellService;
#endif
var gSetBackground = {
_position : kIShellService.BACKGROUND_STRETCH,
_monitor : null,
_image : null,
_backgroundColor : 0,
#ifndef XP_MACOSX
// Converts a color string in the format "#RRGGBB" to an integer.
_hexStringToLong: function (aString)
{
return parseInt(aString.substring(1,3), 16) << 16 |
parseInt(aString.substring(3,5), 16) << 8 |
parseInt(aString.substring(5,7), 16);
},
_rgbToHex: function(aR, aG, aB)
{
var rHex = aR.toString(16).toUpperCase();
var gHex = aG.toString(16).toUpperCase();
var bHex = aB.toString(16).toUpperCase();
if (rHex.length == 1) rHex ='0' + rHex;
if (gHex.length == 1) gHex ='0' + gHex;
if (bHex.length == 1) bHex ='0' + bHex;
return '#' + rHex + gHex + bHex;
},
#endif
get _shell()
{
return Components.classes["@mozilla.org/browser/shell-service;1"]
.getService(Components.interfaces.nsIShellService);
},
load: function ()
{
this._monitor = document.getElementById("monitor");
#ifdef XP_MACOSX
document.documentElement.getButton("accept").hidden = true;
#endif
this.init(window.arguments[0]);
},
init: function (aImage)
{
this._image = aImage;
#ifndef XP_MACOSX
this._initColor();
var position = parseInt(document.getElementById("menuPosition").value);
#else
// Make sure to reset the button state in case the user has already
// set an image as their desktop background.
var setDesktopBackground = document.getElementById("setDesktopBackground");
setDesktopBackground.hidden = false;
var bundle = document.getElementById("backgroundBundle");
setDesktopBackground.label = bundle.getString("DesktopBackgroundSet");
setDesktopBackground.disabled = false;
var showDesktopPreferences = document.getElementById("showDesktopPreferences");
showDesktopPreferences.hidden = true;
var position = kIShellService.BACKGROUND_STRETCH;
#endif
this.updatePosition(position);
},
#ifndef XP_MACOSX
_initColor: function ()
{
var color = this._shell.desktopBackgroundColor;
const rMask = 4294901760;
const gMask = 65280;
const bMask = 255;
var r = (color & rMask) >> 16;
var g = (color & gMask) >> 8;
var b = (color & bMask);
this._backgroundColor = this._rgbToHex(r, g, b);
var colorpicker = document.getElementById("desktopColor");
colorpicker.color = this._rgbToHex(r, g, b);
},
#endif
observe: function (aSubject, aTopic, aData)
{
if (aTopic == "shell:desktop-background-changed") {
var setDesktopBackground = document.getElementById("setDesktopBackground");
setDesktopBackground.hidden = true;
var showDesktopPreferences = document.getElementById("showDesktopPreferences");
showDesktopPreferences.hidden = false;
var os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
os.removeObserver(this, "shell:desktop-background-changed");
}
},
#ifdef XP_MACOSX
setDesktopBackground: function()
{
var os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
os.addObserver(this, "shell:desktop-background-changed", false);
var bundle = document.getElementById("backgroundBundle");
var setDesktopBackground = document.getElementById("setDesktopBackground");
setDesktopBackground.disabled = true;
setDesktopBackground.label = bundle.getString("DesktopBackgroundDownloading");
this._shell.setDesktopBackground(this._image, this._position);
},
showDesktopPrefs: function()
{
this._shell.openApplication(kIMacShellService.APPLICATION_DESKTOP);
},
#else
setDesktopBackground: function ()
{
this._shell.setDesktopBackground(this._image, this._position);
this._shell.desktopBackgroundColor = this._hexStringToLong(this._backgroundColor);
document.persist("menuPosition", "value");
},
#endif
updateColor: function (color)
{
#ifndef XP_MACOSX
this._backgroundColor = color;
if (this._position != kIShellService.BACKGROUND_TILE)
this._monitor.style.backgroundColor = color;
#endif
},
updatePosition: function (aPosition)
{
if (this._monitor.childNodes.length)
this._monitor.removeChild(this._monitor.firstChild);
this._position = aPosition;
if (this._position == kIShellService.BACKGROUND_TILE)
this._tileImage();
else if (this._position == kIShellService.BACKGROUND_STRETCH)
this._stretchImage();
else
this._centerImage();
},
_createImage: function ()
{
const nsIImageLoadingContent = Components.interfaces.nsIImageLoadingContent;
if (!(this._image instanceof nsIImageLoadingContent))
return false;
var request = this._image.QueryInterface(nsIImageLoadingContent)
.getRequest(nsIImageLoadingContent.CURRENT_REQUEST);
if (!request)
return false;
var imgURI = this._image.currentURI;
if (imgURI.schemeIs("javascript"))
return false;
var img = document.createElementNS(kXUL_NS, "image");
img.setAttribute("src", imgURI.spec);
return img;
},
_stretchImage: function ()
{
this.updateColor(this._backgroundColor);
var img = this._createImage();
img.width = parseInt(this._monitor.style.width);
img.height = parseInt(this._monitor.style.height);
this._monitor.appendChild(img);
},
_tileImage: function ()
{
var bundle = document.getElementById("backgroundBundle");
this._monitor.style.backgroundColor = "white";
var text = document.createElementNS(kXUL_NS, "label");
text.setAttribute("id", "noPreviewAvailable");
text.setAttribute("value", bundle.getString("DesktopBackgroundNoPreview"));
this._monitor.appendChild(text);
},
_centerImage: function ()
{
this.updateColor(this._backgroundColor);
var img = this._createImage();
// Use naturalHeight/Width here so we don't scale an image improperly in
// the preview window if the image is resized in the browser window.
var width = this._image.naturalWidth * this._monitor.boxObject.width / screen.width;
var height = this._image.naturalHeight * this._monitor.boxObject.height / screen.height;
img.width = Math.floor(width);
img.height = Math.floor(height);
this._monitor.appendChild(img);
}
};