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-rw-r--r--b2g/chrome/content/screen.js276
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diff --git a/b2g/chrome/content/screen.js b/b2g/chrome/content/screen.js
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--- a/b2g/chrome/content/screen.js
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-// screen.js:
-// Set the screen size, pixel density and scaling of the b2g client screen
-// based on the --screen command-line option, if there is one.
-//
-// TODO: support multiple device pixels per CSS pixel
-//
-
-var browserWindow = Services.wm.getMostRecentWindow("navigator:browser");
-var isMulet = "ResponsiveUI" in browserWindow;
-Cu.import("resource://gre/modules/GlobalSimulatorScreen.jsm");
-
-window.addEventListener('ContentStart', onStart);
-window.addEventListener('SafeModeStart', onStart);
-
-// We do this on ContentStart and SafeModeStart because querying the
-// displayDPI fails otherwise.
-function onStart() {
- // This is the toplevel <window> element
- let shell = document.getElementById('shell');
-
- // The <browser> element inside it
- let browser = document.getElementById('systemapp');
-
- // Figure out the native resolution of the screen
- let windowUtils = window.QueryInterface(Ci.nsIInterfaceRequestor)
- .getInterface(Components.interfaces.nsIDOMWindowUtils);
- let hostDPI = windowUtils.displayDPI;
-
- let DEFAULT_SCREEN = '320x480';
-
- // This is a somewhat random selection of named screens.
- // Add more to this list when we support more hardware.
- // Data from: http://en.wikipedia.org/wiki/List_of_displays_by_pixel_density
- let screens = {
- iphone: {
- name: 'Apple iPhone', width:320, height:480, dpi:163
- },
- ipad: {
- name: 'Apple iPad', width:1024, height:768, dpi:132
- },
- nexus_s: {
- name: 'Samsung Nexus S', width:480, height:800, dpi:235
- },
- galaxy_s2: {
- name: 'Samsung Galaxy SII (I9100)', width:480, height:800, dpi:219
- },
- galaxy_nexus: {
- name: 'Samsung Galaxy Nexus', width:720, height:1280, dpi:316
- },
- galaxy_tab: {
- name: 'Samsung Galaxy Tab 10.1', width:800, height:1280, dpi:149
- },
- wildfire: {
- name: 'HTC Wildfire', width:240, height:320, dpi:125
- },
- tattoo: {
- name: 'HTC Tattoo', width:240, height:320, dpi:143
- },
- salsa: {
- name: 'HTC Salsa', width:320, height:480, dpi:170
- },
- chacha: {
- name: 'HTC ChaCha', width:320, height:480, dpi:222
- },
- };
-
- // Get the command line arguments that were passed to the b2g client
- let args;
- try {
- let service = Cc["@mozilla.org/commandlinehandler/general-startup;1?type=b2gcmds"].getService(Ci.nsISupports);
- args = service.wrappedJSObject.cmdLine;
- } catch(e) {}
-
- let screenarg = null;
-
- // Get the --screen argument from the command line
- try {
- if (args) {
- screenarg = args.handleFlagWithParam('screen', false);
- }
-
- // Override default screen size with a pref
- if (screenarg === null && Services.prefs.prefHasUserValue('b2g.screen.size')) {
- screenarg = Services.prefs.getCharPref('b2g.screen.size');
- }
-
- // If there isn't one, use the default screen
- if (screenarg === null)
- screenarg = DEFAULT_SCREEN;
-
- // With no value, tell the user how to use it
- if (screenarg == '')
- usage();
- }
- catch(e) {
- // If getting the argument value fails, its an error
- usage();
- }
-
- // Special case --screen=full goes into fullscreen mode
- if (screenarg === 'full') {
- shell.setAttribute('sizemode', 'fullscreen');
- return;
- }
-
- let width, height, ratio = 1.0;
- let lastResizedWidth;
-
- if (screenarg in screens) {
- // If this is a named screen, get its data
- let screen = screens[screenarg];
- width = screen.width;
- height = screen.height;
- ratio = screen.ratio;
- } else {
- // Otherwise, parse the resolution and density from the --screen value.
- // The supported syntax is WIDTHxHEIGHT[@DPI]
- let match = screenarg.match(/^(\d+)x(\d+)(@(\d+(\.\d+)?))?$/);
-
- // Display usage information on syntax errors
- if (match == null)
- usage();
-
- // Convert strings to integers
- width = parseInt(match[1], 10);
- height = parseInt(match[2], 10);
- if (match[4])
- ratio = parseFloat(match[4], 10);
-
- // If any of the values came out 0 or NaN or undefined, display usage
- if (!width || !height || !ratio) {
- usage();
- }
- }
-
- Services.prefs.setCharPref('layout.css.devPixelsPerPx',
- ratio == 1 ? -1 : ratio);
- let defaultOrientation = width < height ? 'portrait' : 'landscape';
- GlobalSimulatorScreen.mozOrientation = GlobalSimulatorScreen.screenOrientation = defaultOrientation;
-
- function resize() {
- GlobalSimulatorScreen.width = width;
- GlobalSimulatorScreen.height = height;
-
- // Set the window width and height to desired size plus chrome
- // Include the size of the toolbox displayed under the system app
- let controls = document.getElementById('controls');
- let controlsHeight = controls ? controls.getBoundingClientRect().height : 0;
-
- if (isMulet) {
- let tab = browserWindow.gBrowser.selectedTab;
- let responsive = ResponsiveUIManager.getResponsiveUIForTab(tab);
- responsive.setSize(width + 16*2,
- height + controlsHeight + 61);
- } else {
- let chromewidth = window.outerWidth - window.innerWidth;
- let chromeheight = window.outerHeight - window.innerHeight + controlsHeight;
-
- if (lastResizedWidth == width) {
- return;
- }
- lastResizedWidth = width;
-
- window.resizeTo(width + chromewidth,
- height + chromeheight);
- }
-
- let frameWidth = width, frameHeight = height;
-
- // If the current app doesn't supports the current screen orientation
- // still resize the window, but rotate its frame so that
- // it is displayed rotated on the side
- let shouldFlip = GlobalSimulatorScreen.mozOrientation != GlobalSimulatorScreen.screenOrientation;
-
- if (shouldFlip) {
- frameWidth = height;
- frameHeight = width;
- }
-
- // Set the browser element to the full unscaled size of the screen
- let style = browser.style;
- style.transform = '';
- style.height = 'calc(100% - ' + controlsHeight + 'px)';
- style.bottom = controlsHeight;
-
- style.width = frameWidth + "px";
- style.height = frameHeight + "px";
-
- if (shouldFlip) {
- // Display the system app with a 90° clockwise rotation
- let shift = Math.floor(Math.abs(frameWidth - frameHeight) / 2);
- style.transform +=
- ' rotate(0.25turn) translate(-' + shift + 'px, -' + shift + 'px)';
- }
- }
-
- // Resize on startup
- resize();
-
- // Catch manual resizes to update the internal device size.
- window.onresize = function() {
- let controls = document.getElementById('controls');
- let controlsHeight = controls ? controls.getBoundingClientRect().height : 0;
-
- width = window.innerWidth;
- height = window.innerHeight - controlsHeight;
-
- queueResize();
- };
-
- // Then resize on each rotation button click,
- // or when the system app lock/unlock the orientation
- Services.obs.addObserver(function orientationChangeListener(subject) {
- let screen = subject.wrappedJSObject;
- let { mozOrientation, screenOrientation } = screen;
-
- // If we have an orientation different than the current one,
- // we switch the sizes
- if (screenOrientation != defaultOrientation) {
- let w = width;
- width = height;
- height = w;
- }
- defaultOrientation = screenOrientation;
-
- queueResize();
- }, 'simulator-adjust-window-size', false);
-
- // Queue resize request in order to prevent race and slowdowns
- // by requesting resize multiple times per loop
- let resizeTimeout;
- function queueResize() {
- if (resizeTimeout) {
- clearTimeout(resizeTimeout);
- }
- resizeTimeout = setTimeout(function () {
- resizeTimeout = null;
- resize();
- }, 0);
- }
-
- // A utility function like console.log() for printing to the terminal window
- // Uses dump(), but enables it first, if necessary
- function print() {
- let dump_enabled =
- Services.prefs.getBoolPref('browser.dom.window.dump.enabled');
-
- if (!dump_enabled)
- Services.prefs.setBoolPref('browser.dom.window.dump.enabled', true);
-
- dump(Array.prototype.join.call(arguments, ' ') + '\n');
-
- if (!dump_enabled)
- Services.prefs.setBoolPref('browser.dom.window.dump.enabled', false);
- }
-
- // Print usage info for --screen and exit
- function usage() {
- // Documentation for the --screen argument
- let msg =
- 'The --screen argument specifies the desired resolution and\n' +
- 'pixel density of the simulated device screen. Use it like this:\n' +
- '\t--screen=WIDTHxHEIGHT\t\t\t// E.g.: --screen=320x480\n' +
- '\t--screen=WIDTHxHEIGHT@DOTS_PER_INCH\t// E.g.: --screen=480x800@250\n' +
- '\t--screen=full\t\t\t\t// run in fullscreen mode\n' +
- '\nYou can also specify certain device names:\n';
- for(let p in screens)
- msg += '\t--screen=' + p + '\t// ' + screens[p].name + '\n';
-
- // Display the usage message
- print(msg);
-
- // Exit the b2g client
- Services.startup.quit(Ci.nsIAppStartup.eAttemptQuit);
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 09:24:30 +0000