toolkit/modules/LightweightThemeConsumer.jsm@6474c204b198 (annotated)
toolkit/modules/LightweightThemeConsumer.jsm
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | this.EXPORTED_SYMBOLS = ["LightweightThemeConsumer"]; |
| michael@0 | 6 | |
| michael@0 | 7 | Components.utils.import("resource://gre/modules/XPCOMUtils.jsm"); |
| michael@0 | 8 | Components.utils.import("resource://gre/modules/Services.jsm"); |
| michael@0 | 9 | |
| michael@0 | 10 | XPCOMUtils.defineLazyModuleGetter(this, "LightweightThemeImageOptimizer", |
| michael@0 | 11 | "resource://gre/modules/addons/LightweightThemeImageOptimizer.jsm"); |
| michael@0 | 12 | |
| michael@0 | 13 | XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils", |
| michael@0 | 14 | "resource://gre/modules/PrivateBrowsingUtils.jsm"); |
| michael@0 | 15 | |
| michael@0 | 16 | this.LightweightThemeConsumer = |
| michael@0 | 17 | function LightweightThemeConsumer(aDocument) { |
| michael@0 | 18 | this._doc = aDocument; |
| michael@0 | 19 | this._win = aDocument.defaultView; |
| michael@0 | 20 | this._footerId = aDocument.documentElement.getAttribute("lightweightthemesfooter"); |
| michael@0 | 21 | |
| michael@0 | 22 | if (PrivateBrowsingUtils.isWindowPrivate(this._win) && |
| michael@0 | 23 | !PrivateBrowsingUtils.permanentPrivateBrowsing) { |
| michael@0 | 24 | return; |
| michael@0 | 25 | } |
| michael@0 | 26 | |
| michael@0 | 27 | let screen = this._win.screen; |
| michael@0 | 28 | this._lastScreenWidth = screen.width; |
| michael@0 | 29 | this._lastScreenHeight = screen.height; |
| michael@0 | 30 | |
| michael@0 | 31 | Components.classes["@mozilla.org/observer-service;1"] |
| michael@0 | 32 | .getService(Components.interfaces.nsIObserverService) |
| michael@0 | 33 | .addObserver(this, "lightweight-theme-styling-update", false); |
| michael@0 | 34 | |
| michael@0 | 35 | var temp = {}; |
| michael@0 | 36 | Components.utils.import("resource://gre/modules/LightweightThemeManager.jsm", temp); |
| michael@0 | 37 | this._update(temp.LightweightThemeManager.currentThemeForDisplay); |
| michael@0 | 38 | this._win.addEventListener("resize", this); |
| michael@0 | 39 | } |
| michael@0 | 40 | |
| michael@0 | 41 | LightweightThemeConsumer.prototype = { |
| michael@0 | 42 | _lastData: null, |
| michael@0 | 43 | _lastScreenWidth: null, |
| michael@0 | 44 | _lastScreenHeight: null, |
| michael@0 | 45 | // Whether the active lightweight theme should be shown on the window. |
| michael@0 | 46 | _enabled: true, |
| michael@0 | 47 | // Whether a lightweight theme is enabled. |
| michael@0 | 48 | _active: false, |
| michael@0 | 49 | |
| michael@0 | 50 | enable: function() { |
| michael@0 | 51 | this._enabled = true; |
| michael@0 | 52 | this._update(this._lastData); |
| michael@0 | 53 | }, |
| michael@0 | 54 | |
| michael@0 | 55 | disable: function() { |
| michael@0 | 56 | // Dance to keep the data, but reset the applied styles: |
| michael@0 | 57 | let lastData = this._lastData |
| michael@0 | 58 | this._update(null); |
| michael@0 | 59 | this._enabled = false; |
| michael@0 | 60 | this._lastData = lastData; |
| michael@0 | 61 | }, |
| michael@0 | 62 | |
| michael@0 | 63 | observe: function (aSubject, aTopic, aData) { |
| michael@0 | 64 | if (aTopic != "lightweight-theme-styling-update") |
| michael@0 | 65 | return; |
| michael@0 | 66 | |
| michael@0 | 67 | this._update(JSON.parse(aData)); |
| michael@0 | 68 | }, |
| michael@0 | 69 | |
| michael@0 | 70 | handleEvent: function (aEvent) { |
| michael@0 | 71 | let {width, height} = this._win.screen; |
| michael@0 | 72 | |
| michael@0 | 73 | if (this._lastScreenWidth != width || this._lastScreenHeight != height) { |
| michael@0 | 74 | this._lastScreenWidth = width; |
| michael@0 | 75 | this._lastScreenHeight = height; |
| michael@0 | 76 | if (!this._active) |
| michael@0 | 77 | return; |
| michael@0 | 78 | this._update(this._lastData); |
| michael@0 | 79 | Services.obs.notifyObservers(this._win, "lightweight-theme-optimized", |
| michael@0 | 80 | JSON.stringify(this._lastData)); |
| michael@0 | 81 | } |
| michael@0 | 82 | }, |
| michael@0 | 83 | |
| michael@0 | 84 | destroy: function () { |
| michael@0 | 85 | if (!PrivateBrowsingUtils.isWindowPrivate(this._win) || |
| michael@0 | 86 | PrivateBrowsingUtils.permanentPrivateBrowsing) { |
| michael@0 | 87 | Components.classes["@mozilla.org/observer-service;1"] |
| michael@0 | 88 | .getService(Components.interfaces.nsIObserverService) |
| michael@0 | 89 | .removeObserver(this, "lightweight-theme-styling-update"); |
| michael@0 | 90 | |
| michael@0 | 91 | this._win.removeEventListener("resize", this); |
| michael@0 | 92 | } |
| michael@0 | 93 | |
| michael@0 | 94 | this._win = this._doc = null; |
| michael@0 | 95 | }, |
| michael@0 | 96 | |
| michael@0 | 97 | _update: function (aData) { |
| michael@0 | 98 | if (!aData) { |
| michael@0 | 99 | aData = { headerURL: "", footerURL: "", textcolor: "", accentcolor: "" }; |
| michael@0 | 100 | this._lastData = aData; |
| michael@0 | 101 | } else { |
| michael@0 | 102 | this._lastData = aData; |
| michael@0 | 103 | aData = LightweightThemeImageOptimizer.optimize(aData, this._win.screen); |
| michael@0 | 104 | } |
| michael@0 | 105 | if (!this._enabled) |
| michael@0 | 106 | return; |
| michael@0 | 107 | |
| michael@0 | 108 | let root = this._doc.documentElement; |
| michael@0 | 109 | let active = !!aData.headerURL; |
| michael@0 | 110 | let stateChanging = (active != this._active); |
| michael@0 | 111 | |
| michael@0 | 112 | if (active) { |
| michael@0 | 113 | root.style.color = aData.textcolor || "black"; |
| michael@0 | 114 | root.style.backgroundColor = aData.accentcolor || "white"; |
| michael@0 | 115 | let [r, g, b] = _parseRGB(this._doc.defaultView.getComputedStyle(root, "").color); |
| michael@0 | 116 | let luminance = 0.2125 * r + 0.7154 * g + 0.0721 * b; |
| michael@0 | 117 | root.setAttribute("lwthemetextcolor", luminance <= 110 ? "dark" : "bright"); |
| michael@0 | 118 | root.setAttribute("lwtheme", "true"); |
| michael@0 | 119 | } else { |
| michael@0 | 120 | root.style.color = ""; |
| michael@0 | 121 | root.style.backgroundColor = ""; |
| michael@0 | 122 | root.removeAttribute("lwthemetextcolor"); |
| michael@0 | 123 | root.removeAttribute("lwtheme"); |
| michael@0 | 124 | } |
| michael@0 | 125 | |
| michael@0 | 126 | this._active = active; |
| michael@0 | 127 | |
| michael@0 | 128 | _setImage(root, active, aData.headerURL); |
| michael@0 | 129 | if (this._footerId) { |
| michael@0 | 130 | let footer = this._doc.getElementById(this._footerId); |
| michael@0 | 131 | footer.style.backgroundColor = active ? aData.accentcolor || "white" : ""; |
| michael@0 | 132 | _setImage(footer, active, aData.footerURL); |
| michael@0 | 133 | if (active && aData.footerURL) |
| michael@0 | 134 | footer.setAttribute("lwthemefooter", "true"); |
| michael@0 | 135 | else |
| michael@0 | 136 | footer.removeAttribute("lwthemefooter"); |
| michael@0 | 137 | } |
| michael@0 | 138 | |
| michael@0 | 139 | #ifdef XP_MACOSX |
| michael@0 | 140 | // On OS X, we extend the lightweight theme into the titlebar, which means setting |
| michael@0 | 141 | // the chromemargin attribute. Some XUL applications already draw in the titlebar, |
| michael@0 | 142 | // so we need to save the chromemargin value before we overwrite it with the value |
| michael@0 | 143 | // that lets us draw in the titlebar. We stash this value on the root attribute so |
| michael@0 | 144 | // that XUL applications have the ability to invalidate the saved value. |
| michael@0 | 145 | if (stateChanging) { |
| michael@0 | 146 | if (!root.hasAttribute("chromemargin-nonlwtheme")) { |
| michael@0 | 147 | root.setAttribute("chromemargin-nonlwtheme", root.getAttribute("chromemargin")); |
| michael@0 | 148 | } |
| michael@0 | 149 | |
| michael@0 | 150 | if (active) { |
| michael@0 | 151 | root.setAttribute("chromemargin", "0,-1,-1,-1"); |
| michael@0 | 152 | } else { |
| michael@0 | 153 | let defaultChromemargin = root.getAttribute("chromemargin-nonlwtheme"); |
| michael@0 | 154 | if (defaultChromemargin) { |
| michael@0 | 155 | root.setAttribute("chromemargin", defaultChromemargin); |
| michael@0 | 156 | } else { |
| michael@0 | 157 | root.removeAttribute("chromemargin"); |
| michael@0 | 158 | } |
| michael@0 | 159 | } |
| michael@0 | 160 | } |
| michael@0 | 161 | #endif |
| michael@0 | 162 | } |
| michael@0 | 163 | } |
| michael@0 | 164 | |
| michael@0 | 165 | function _setImage(aElement, aActive, aURL) { |
| michael@0 | 166 | aElement.style.backgroundImage = |
| michael@0 | 167 | (aActive && aURL) ? 'url("' + aURL.replace(/"/g, '\\"') + '")' : ""; |
| michael@0 | 168 | } |
| michael@0 | 169 | |
| michael@0 | 170 | function _parseRGB(aColorString) { |
| michael@0 | 171 | var rgb = aColorString.match(/^rgba?\((\d+), (\d+), (\d+)/); |
| michael@0 | 172 | rgb.shift(); |
| michael@0 | 173 | return rgb.map(function (x) parseInt(x)); |
| michael@0 | 174 | } |
