86 lines
2.5 KiB
JavaScript
86 lines
2.5 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const { Ci } = require("chrome");
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const Services = require("Services");
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const { KeyShortcuts } = require("devtools/client/shared/key-shortcuts");
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const ZOOM_PREF = "devtools.toolbox.zoomValue";
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const MIN_ZOOM = 0.5;
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const MAX_ZOOM = 2;
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const {LocalizationHelper} = require("devtools/shared/l10n");
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const L10N = new LocalizationHelper("devtools/client/locales/toolbox.properties");
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/**
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* Register generic keys to control zoom level of the given document.
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* Used by both the toolboxes and the browser console.
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*
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* @param {DOMWindow} The window on which we should listent to key strokes and
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* modify the zoom factor.
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*/
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exports.register = function (window) {
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let shortcuts = new KeyShortcuts({
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window
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});
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let docShell = window.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIWebNavigation)
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.QueryInterface(Ci.nsIDocShell);
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let contViewer = docShell.contentViewer;
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let zoomValue = parseFloat(Services.prefs.getCharPref(ZOOM_PREF));
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let zoomIn = function (name, event) {
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setZoom(zoomValue + 0.1);
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event.preventDefault();
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};
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let zoomOut = function (name, event) {
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setZoom(zoomValue - 0.1);
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event.preventDefault();
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};
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let zoomReset = function (name, event) {
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setZoom(1);
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event.preventDefault();
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};
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let setZoom = function (newValue) {
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// cap zoom value
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zoomValue = Math.max(newValue, MIN_ZOOM);
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zoomValue = Math.min(zoomValue, MAX_ZOOM);
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contViewer.fullZoom = zoomValue;
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Services.prefs.setCharPref(ZOOM_PREF, zoomValue);
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};
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// Set zoom to whatever the last setting was.
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setZoom(zoomValue);
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shortcuts.on(L10N.getStr("toolbox.zoomIn.key"), zoomIn);
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let zoomIn2 = L10N.getStr("toolbox.zoomIn2.key");
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if (zoomIn2) {
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shortcuts.on(zoomIn2, zoomIn);
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}
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let zoomIn3 = L10N.getStr("toolbox.zoomIn2.key");
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if (zoomIn3) {
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shortcuts.on(zoomIn3, zoomIn);
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}
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shortcuts.on(L10N.getStr("toolbox.zoomOut.key"),
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zoomOut);
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let zoomOut2 = L10N.getStr("toolbox.zoomOut2.key");
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if (zoomOut2) {
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shortcuts.on(zoomOut2, zoomOut);
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}
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shortcuts.on(L10N.getStr("toolbox.zoomReset.key"),
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zoomReset);
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let zoomReset2 = L10N.getStr("toolbox.zoomReset2.key");
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if (zoomReset2) {
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shortcuts.on(zoomReset2, zoomReset);
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}
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};
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