So I have xmonad running remotely. All is good and I'm using the Win key instead of Alt. The problem is, when I want to resize an xmonad window with Alt+L, this locks the screen in my Windows desktop. How can I rebind Alt+L to something like Alt+Shift+H?
You can see the source code for the default mappings here. To rebind the Alt+L key to Alt+Shift+H you can use the additionalKeys function to add new key bindings to your config:
import XMonad.Util.EZConfig
main = xmonad $ defaultConfig {
...
} `additionalKeys` [
((shiftMask .|. mod1Mask, xK_h), sendMessage Expand)
]
Related
In p5js editor, I wanted to test the example called capture to turn on my webcam on my mac pro.
The code must be correct since I used the example that already existed, but the camera is not turning on and I do not know why.
the console says:
{
"constraintName": "",
"message": "",
"name": "InvalidStateError"
}
let capture;
function setup() {
createCanvas(390, 240);
capture = createCapture(VIDEO);
capture.size(320, 240);
//capture.hide();
}
function draw() {
background(255);
image(capture, 0, 0, 320, 240);
filter(INVERT);
}
Using the P5.js webcam feature requires the user to click "allow" before allowing the camera. This code executes on the P5.js web editor ( https://editor.p5js.org/ ). It looks like this :
If you want to execute the code locally, I would recommend using a Node Static Server or an editor with built-in capabilities of running a server locally. I personally use Brackets ( http://brackets.io/ ), which allows you to run HTML websites in a contained static node environment through Google Chrome. I tried executing this example on Brackets and it worked fine.
I noticed that if you change your GameWindow state to Fullscreen you can no longer use system keyboard shortcuts like Alt+F4 or Alt+Tab (they simply do nothing, BTW I use Windows 7).
Is there a way to fix it? Do I have to catch this shortcuts manually in my application (and trigger appropriate action)?
I realize this is an old question, but I'm posting the answer for anyone Googling this like I did.
You will have to manually register the OnKeyDown event.
protected override void OnKeyDown(KeyboardKeyEventArgs e)
{
base.OnKeyDown(e);
if (e.Alt && e.Key == Key.F4)
{
Environment.Exit(0);
}
}
This worked for me. If you want it to bring up an "Are you sure?" message or something like that, you can put it in the if statement.
In addition to the 'back' button functioning as expected, I need to asynchronously invoke a function to update some db tables and refresh the UI.
Prior to making this post, I did some research and tried the following on this...
<h1 data-dojo-type="dojox.mobile.Heading" id="hdgSettings" data-dojo-props="label:'Settings',back:'Done',moveTo:'svStart',fixed:'top'"></h1>
dojo.connect(dijit.registry.byId("hdgSettings"), "onclick",
function() {
if (gblLoggerOn) WL.Logger.debug(">> hdgSettings(onclick) fired...");
loadTopLvlStats();
});
Since my heading doesn't have any other widgets than the 'back' button, I thought that attaching this event to it would solve my problem... it did nothing. So I changed it to this...
dojo.connect(dijit.registry.byId("hdgSettings")._body, "onclick",
function() {
if (gblLoggerOn) WL.Logger.debug(">> hdgSettings(onclick) fired...");
loadTopLvlStats();
});
As it turns out, the '._body' attribute must be shared by the Accordion widget that I just happen to use as my app's main UI component, and any attempt to interact w the Accordion rendered my entire app useless.
As a last resort, I guess I could simply forgo using the built-in 'back' button, and simply place my own tabBarButton on the heading to control my app's transition and event processing.
If the community suggests that I use my own tabBarButton, then so be it, however there has to be a way to cleanly attach an event to the built-in 'back' button support.
Thoughts?
The following should do the trick:
var backButton = dijit.registry.byId("hdgSettings").backButton;
if (backButton) {
dojo.connect(backButton, "onClick", function() { ... });
}
Remarks:
The code above should be executed via a dojo/ready call, to avoid using dijit's widget registry before it gets filled. See http://dojotoolkit.org/reference-guide/1.9/dojo/ready.html.
Note the capitalization of the event name: "onClick" (not "onclick").
Not knowing what Dojo version you use (please always include the Dojo version information when asking questions), I kept your pre-AMD syntax, which is not recommended with recent Dojo versions (1.8, 1.9). See http://dojotoolkit.org/documentation/tutorials/1.9/modern_dojo/ for details.
I'm using BlackBerry-10 Cascades to develop an app. I want a context menu to open on the right when I click a button. Currently I have it so that the menu opens after a press- hold of the button but I need it to open as soon as the button is tapped. I've tried finding a way to do this but cannot find it in the documentation. Is there any way I can invoke the context menu from the onclicked method of a button press?
BTW: this is all in QML
I am not really familiar with the controls available on blackberry-cascades, but, it seems like it should be as simple as moving the code from the onPressAndHold signal handler to the onClicked signal handler. For better help you should post the relevant snippets of your code along with the imports so we can find more info to help you in your particular scenario.
actions: [
//! [0]
ActionItem {
title: _webMaps.viewModeTitle
imageSource: "asset:///images/map.png"
ActionBar.placement: ActionBarPlacement.OnBar
onTriggered: {
_webMaps.nextViewMode()
map.setMapType(_webMaps.viewMode);
}
},
//! [0]
ActionItem {
title: qsTr("Waterloo")
imageSource: "asset:///images/pin.png"
ActionBar.placement: ActionBarPlacement.InOverflow
onTriggered: {
map.setCenter(43.468245, -80.519603);
}
}
]
try this sample..
In theory you should be able to do it but there are two problems that I see with this idea:
A context menu is supposed to be posted in the context of another UI element. I'm not sure what context menu items you might have for a button. If you are posting the context menu in the context of some other control then you will confuse your users.
The age old issue of non-conformance with the UI style guide of the platform. You will be expecting your uses, who have invested time in learning how to operate the BB10 UI, to now learn a different set of interface semantics.
There is a Context menu api in the BlackBerry Platform Services (BPS) library that you can use.
https://developer.blackberry.com/native/reference/core/com.qnx.doc.bps.lib_ref/topic/manual/dialog.h_functionscontextmenufunctions.html?f=dialog
It is not "Cascades functionality" per se, but you can use it from within a Cascades application. Note that it is a C based api so you would have to create some kind of "helper class" and expose it to QML yourself.
Try this sample code for open context menu on button clicked.
What would be the best way to go about building an Adobe AIR app that doesn't have any windows (i.e. exists only in the system tray / dock)? I noticed that the default base tag in Flash Builder is <s:WindowedApplication> which seems to imply there'll be a window.
Should I just use <s:WindowedApplication> and call window.hide()? I saw there's another base class, <s:Application>, but I got the sense that was more for files that run in the browser. It seems like using window.hide() would briefly flash a window when the application starts which could confuse users. However I'd also ideally like to retain the ability to have the app open a window later if needed, or also to change the application from tray-only to windowed through an update.
You need to edit the app-config file to enable transparent chrome and visible = false. Then you need to change the WindowedApplication tag to and app your custom skin. You need to add control buttons for close etc, since that functionality isn't present in a web-app (since you have changed the tag). Also you need to add drag functionality. If you like to make your application re-sizable you need to add that too, manually.
In your manifest (-app.xml) file set systemChrome to none and transparent to true. The visible property is irrelevant, and the default is false anyway so ignore it.
you'll have to tweak this, import whatever classes are missing, etc... you could also do it as an mxml component and just set visible and enabled to false on the root tag. Fill up the trayImages array with the icons you want in the dock.
p
ackage{
import spark.components.WindowedApplication;
public class HiddenApplication extends WindowedApplication{
public function HiddenApplication(){
super();
enabled=false;
visible=false;
var trayImages:Array;
if(NativeApplication.supportsDockIcon||NativeApplication.supportsSystemTrayIcon){
NativeApplication.nativeApplication.activate();
var sep:NativeMenuItem = new NativeMenuItem(null,true);
var exitMenu:NativeMenuItem = new NativeMenuItem('Exit',false);
exitMenu.addEventListener(Event.SELECT,shutdown);
var updateMenu:NativeMenuItem = new NativeMenuItem('Check for Updates',false);
updateMenu.addEventListener(Event.SELECT,upDcheck);
var prefsMenu:NativeMenuItem = new NativeMenuItem('Preferences',false);
prefsMenu.addEventListener(Event.SELECT,Controller.showSettings);
NativeApplication.nativeApplication.icon.addEventListener(ScreenMouseEvent.CLICK,showToolBar);
if(NativeApplication.supportsSystemTrayIcon){
trayIcon = SystemTrayIcon(NativeApplication.nativeApplication.icon);
setTrayIcons();
trayIcon.tooltip = "Some random tooltip text";
trayIcon.menu = new NativeMenu();
trayIcon.menu.addItem(prefsMenu);
trayIcon.menu.addItem(sep);
trayIcon.menu.addItem(updateMenu);
trayIcon.menu.addItem(exitMenu);
}
else{
dockIcon = DockIcon(NativeApplication.nativeApplication.icon);
setTrayIcons();
dockIcon.menu = new NativeMenu();
dockIcon.menu.addItem(prefsMenu);
dockIcon.menu.addItem(sep);
dockIcon.menu.addItem(updateMenu);
dockIcon.menu.addItem(exitMenu);
}
}
function setTrayIcons(n:Number=0):void{
if(showTrayIcon&&(trayIcon||dockIcon)){
Controller.debug('Updating tray icon');
if(NativeApplication.supportsSystemTrayIcon){
trayIcon.bitmaps = trayImages;
}
else if(NativeApplication.supportsDockIcon){
dockIcon.bitmaps = trayImages;
}
}
else if(trayIcon||dockIcon) trayIcon.bitmaps = new Array();
}
}
}