In my Electron app, I am trying to use dialog.showOpenDialog() to allow users to choose the image file that they want to open. On Ubuntu 18.04, when they choose an image file, a preview of the image would appear on the right side like so:
https://i.stack.imgur.com/RG6Po.png
However, if the user chooses a file that is too large (typically 1GB+), my app would crashes, with the following being printed on the command line:
tcmalloc: large alloc 1073741824 bytes == 0x32f584ab4000 # 0x7fb5985b16cf
I tried disable thumbnail generation in the Search & Preview tab of the file manager but it didn't disable this right-hand-side preview in the dialog box.
My app works with very large raster files so being able to choose these image files is crucial. I have considered either installing a new file manager or moving my code to another OS, but I want to ask beforehand if there is any less drastic solution that I can take?
The previews are being added to the GtkFileChooserDialog by Electron itself, so changing your file manager or its settings won't have an effect. Changing OS would work, of course, as drastic as it is.
It does seem like Electron should offer an option for turning off previews among the platform-specific ones in dialog.showOpenDialog. At the minimum, it should enforce a reasonable cutoff on file sizes for previews.
To accomplish that, you'd have to patch Electron locally (and then ideally submit a PR). Whatever you decide to do, I don't see a bug reported about this in the Electron repo, so doing that could be helpful to anyone else who runs into the problem.
Related
So I have 150+ users who are using a mac mini, El Capitan.
I use deploy studio to make an image so I can clean out the junk every so often, on this image I have settings and such that I can regulate, I am not sure how to make it so the first time someone logs in, the windows are not mirrored, (everyone is using dual monitors). Is this possible?
I can make an Apple script to do it just fine, but that isn't acceptable in this case.
Question : How do I set the preference/setting of "mirror windows" to be automatically or always unchecked?
maybe this link could help your problem : https://discussions.apple.com/thread/2750766?tstart=0
The setting for whether a display is mirrored or not is controlled per display using the key "Mirrored" in this file:
/Library/Preferences/com.apple.windowserver.plist
However, that file contains a list of displays, each potentially with a unique identifier. You might be able to lay down the same file on multiple machines provided they all have the same monitor model, but I don't know for sure.
I'm using Win7 but looking for a cross os solution, but this isnt even working in my Win7. I'm trying to change the icon of just the current profile. So what i did was:
I created shortcut of firefox.exe and moved it to my documents
right click on this shortcut and then changed icon
but in firefox the taskbar shows normal firefox icon and so does the top left icon (see attached image plz)
How can I change this icon?
Thanks
Here's another topic i made on ask.m.o trying to ask the same thing: https://ask.mozilla.org/question/725/custom-icon-per-profile/
As of Firefox 57, this is not possible from an extension.
WebExtensions do not permit the window icon to be changed from an extension.
Prior to Firefox 57 (or non-release versions w/ legacy add-ons)
The combination of the title of your question and the text of your question make it unclear what you desire to accomplish.
If your goal is to dynamically change the window icon of a currently running Firefox process then you will need to follow something along the lines of the second or third method listed in nmaier's answer.
If you goal is to always have a different, static icon used for the primary Firefox windows for a specific profile, that is quite easy.
You will need icon files of the appropriate format for each architecture for which you desire this to work.
The following assumes Windows, it is easily expanded to other architectures by including an icon file with the same name, but appropriate file extension and format.
Create a simple overlay, extracted extension. You will need a minimum of 2 files:
<extension-dir>instal.rdf
<extension-dir>\chrome\icons\default\main-window.ico
Example, fully functional, install.rdf:
<?xml version="1.0"?>
<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:em="http://www.mozilla.org/2004/em-rdf#">
<Description about="urn:mozilla:install-manifest">
<em:id>window-icon-change#nowhere.foo</em:id>
<em:version>1.0.0</em:version>
<em:name>Window icon change</em:name>
<em:description>Change the Firefox main window icon.</em:description>
<em:creator>Makyen</em:creator>
<em:unpack>true</em:unpack>
<em:targetApplication>
<Description>
<em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
<em:minVersion>3.0a1</em:minVersion>
<em:maxVersion>43.0a1</em:maxVersion>
</Description>
</em:targetApplication>
</Description>
</RDF>
NOTE: The "<extension-dir>\chrome\icons\default\" directory is different than the one in the response by nmaier. In that answer the "icons" and "default" directories reversed and will be non-functional.
You will probably want an additional file:
<extension-dir>chrome.manifest
The chrome.manifest file is not required. However, not having it may result in a single line being printed to the error/browser console (if you even have that open). If the chrome.manifest file exists, even if zero length, there will be no complaint in the console that the file could not be read.
Install the extension. The easy way to do this is to create a zip file with those three files; then change the file extension to .xpi; then drag and drop it onto a Firefox window running the profile in which you desire it to be installed.
You can expand this to include icons for whatever sub-windows you desire. You will need to determine the ID for each sub-window. The icon file name is just the window ID with the appropriate extension for an icon in the architectures you desire. "main-window" is just the ID for the main Firefox browser window.
Creating an extension to test this took less than 5 minutes. You should find it reasonably easy to accomplish.
This assumes that there is not a custom main-window icon located at (Windows, default install location):
C:\Program Files\Mozilla Firefox\browser\chrome\icons\default
as that directory is for all profiles and is searched first.
This will not work if the extension is either restartless or extractionless.
You can find a brief amount of information about window icons on MDN. nmaier mentions the docs talking about bundles. When talking about Mozilla add-ons, a bundle is your add-on package.
The icon file(s) will be at (Windows):
<profile dir>\extensions\<extension-dir>\chrome\icons\default*
Once the extension is installed, you can change it/them manually without re-installing, if desired.
Add-ons created to solve this
Based on the discussion in the comments, I created a Firefox Add-on to allow setting the window icons for the profile. It is much expanded upon the 5 minute add-on mentioned in the comments. The addition is entirely in a UI for the options dialog for selecting the icon to use and assigning it to the various different windows Firefox opens. You can get it from Mozilla Add-ons under Change Profile's Window Icons. Unfortunately, it's not possible for that add-on to function as of Firefox 48 which requires add-ons to be signed. To dynamically change the icon requires changing files which must be signed. Thus it's not possible to dynamically change the icon with add-on signing required.
Instead I created a few add-ons which statically change the window icon. You can find them on AMO.
Well, there are some ways that spring to mind, but all with their own issues:
Using Window Icons provided by an add-on you install into the profile (the docs talk about bundles, but add-on can also use this technique). The add-on must be em:unpack and have the icon(s) in chrome/default/icons exactly. It is possible that the Firefox in question has an own set of icons bundled in the $appdir/chrome/default/icons, in particular on *nix and since they are checked first, they will be used instead of the add-on provided add-ons. So while this approach works for custom add-on windows, it might not for built-in ones.
Copy and patch Firefox itself, aka. the sledgehammer approach. Different for each platform (e.g. under Windows you'd have to swap out the icon resource of the firefox.exe).
Create a tool that will switch out the icons of a running window. There is no code to do so in Firefox that would be accessible from javascript, so you need to go binary and platform-specific, e.g. WM_SETICON on Windows.
Edit 1:
Actually, thinking more about it, I'd install an add-on with some platform-specific js-ctypes code that would then switch out the icons, e.g. the already mentioned WM_SETICON on Windows.
Usually you'll need a window handle for the platform APIs, which Firefox refuses to provide to JS. But as a workaround for that:
Store the window title.
Set the window title to a new uuid.
Call a platform API to find the new uuid titled window handle (FindWindow on Windows). mintrayr uses this scheme for Windows/Gnome(GTK/GDK), also not in js-ctypes.
Restore the window title.
Load/transform the icon file to something the platform supports (HICON on windows). I once had a patch somewhere on bugzilla that enabled loading of arbitrary images as window icons FWIW, but let it slide. Should be still somewhere and could give pointers.
Switch the icon using the obtained handle. E.g. Sending two WM_SETICON for small/big icon on Windows.
Edit 2
Turns out nsIBaseWindow exposes a nativeHandle these days, as I learned from your other question. so the window-title–hack isn't needed any longer. However, nativeHandle might be an 64-bit pointer, which isn't really supported in JS land without some trickery... Better not parseInt it... Also js numbers are floats.
ctypes.voidptr_t(ctypes.UInt64(nativeHandle)) should work, though.
On Mac OS X, this Firefox plugin will do just that: https://addons.mozilla.org/en-US/firefox/addon/fosx-label/. Also on GitHub: https://github.com/jf/fosx-label. Thanks to Noitidart for pointing out this very useful plugin.
Tested on Yosemite 10.10.5 and it works perfectly!
FITS files can contain several images (or more generally n-dimensional arrays) and tables.
Is there a way to automatically open images e.g. with the ds9 application and tables with the TOPCAT application when I double-click the FITS file in the Mac OS X Finder?
I'm thinking of something like FITS Explorer from AstroSoft, but free and nicely integrated into the Mac (i.e. Finder, Quicklook).
If such a thing doesn't exist, what is your workflow for browsing and opening images and tables in FITS files?
I just found QLFits which is a Mac OS X Finder QuickLook plugin that display some FITS header info and an image simply by hitting SPACE after selecting a FITS file in the Finder.
The same guy wrote FITSImporter:
a Spotlight plugin that allow you make spotlight queries against dedicated FITS header keywords. It provides also additional information in the "Get Info" panel of the Finder (⌘-I).
Both are open source (GPL licence), the code is available on github: QLFITS, FITSImporter.
They are not perfect though (e.g. I didn't see a way to get at the different extensions in a multi-extension FITS file, although the description says there is; and you can't use QLFits to browse tables) and development seems to have stopped, but still well worth a try!
Apart from recommending you QLFits, you could try to write an AppleScript application, or Automator action using any scripting language, which explored the FITS file, and sent table-based FITS to TOPCAT, and image-based FITS to DS9, and make that application the default for FITS files.
I have recently used an icon file received from our marketing team. The icon file when opened in resource editor (Visual Studio 2008) looks like this.
The same file when opened-and-saved in IcoFX appears correctly in resource editor.
My marketing team uses some tools (Picture2Icon ) in Mac and produces the icon file which appears to be corrupt or not fully correct. The same file saved by IcoFx seems to be correct. What is causing the ICOFX out to be correct?
The result is the exe shows bad icons. The exact case where the image is bad is not clear- It is reported in case where color quality is set to be 'medium' (windows XP). It is worse when executable is "selected" in windows explorer.
Here is one icon that shows problem: https://github.com/jayanmn/icontest/blob/master/icontest.ico
Full sample code to create exe is at https://github.com/jayanmn/icontest/
So question is given an ico file, how can I ensure that it works fine on WindowsXP, Windows Vista and Windows7?
I took a good look at your icontest.ico file provided from the GitHub website and discovered that the solution is an easy fix.
First, let me illustrate the problem as I see it on a Windows XP 32bit System using the freeware IrfanView software which is an excellent image viewer for this task.
Here is a composite shot I made illustrating the error for 5 of 6 layers as seen using IrfanView:
To fix the above icontest.ico file, one would think frames 1,2,3,4 and 6 are bad. But the opposite is true! It turns out that frame 5 is the culprit!.
Specifically, frame 5 has compression set on this frame which is causing the issue.
The actual fix that's required is to merely re-save the icontest.ico file without compressing that layer. For this task, the freeware GIMP application which is an excellent image editor is perfect for this task.
Just re-save the icon file with GIMP but remove the compression for the 5th layer as shown below:
The final result is a properly rendered icontestResaved.ico as seen in IrfanView (Tip: To view frames of an icon file in IrfanView, use the Red Arrows that's next to the frame number, i.e. 1/6):
The best way to ensure that the file works in different Windows Operating System's is to actually have a machine available, as the rendering engine is unique and emulators might not work as intended.
For the curious: Setting all layers to be compressed in GIMP resulted in a icon that was not viewable in Windows Explorer.
Tip: To view the reference images above at original size, right mouse-click and choose View Image.
Status Update: Consider installing Axialis IconWorkshop™ Lite Version 6.3.1.1 to handle all your icon development workflow needs. It's a free Visual Studio 2008 Plugin provided by Axialis themselves!
I need a tool to capture and attach screenshots in TFS team web access. Instead of having some thrid party tool that captures and saves images on disk and then you have to attach that image to a bug like bugshooting. I want something integrated within TFS.
In VS11 it is possible to copy and paste your screen shots in the description field of the work item. You can check out the VS11 Beta version yourself.
There's nothing integrated in VS, but there are a couple of easy options:
use the standard Windows screenshot function. Alt-PrtScrn will capture the current window, and then you can paste into your work item's Attachments pane. It'll create a generic filename and attach as a PNG.
if you're using Win7, try the "Snipping tool" (just press Start and type "snip" to find it). That will capture a specified area and can then copy it to the clipboard or save to a file. If you copy & paste you still have the problem of generic filenames, though, so personally I still tend to save it myself.
As #Hofman said, you can do it with VS 11 beta, so you can use MS Paint or even SnagIt, for how to do it just see the following link:
http://mohamedradwan.wordpress.com/2012/02/29/new-enhancement-in-mtm-11-preview/
You may want to check the Capture Custom Control - you can use it to embed a "Capture" button in your work items. It automatically attaches the screenshot to your work item.
Check it out at http://witcustomcontrols.codeplex.com/wikipage?title=Screenshot%20controls&ProjectName=witcustomcontrols
there are a very powerful tool which comes with Windows Server 2008 (Actually I'm not sure if it comes with windows 8 or 7)
never-mine.., the tool called "Record Steps To Reproduce the Problems" , this tool built for Taking screenshots of doing any thing in your machine step by step... WOW
You just need to open the start panel and then write "record steps to reproduce a problem". starting record, and make you job that you want, then when you finish stop recording and save the zip file in your machine.
the zip file will expose a word document contains every single click that you make and every page you've open with some description.