Changes between Version 1 and Version 19 of Help/HiDPISupport


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  • Help/HiDPISupport

    v1 v19  
    1 = HiDPI support =
     1[[TranslatedPages]]
     2[[PageOutline]]
    23
    3 This page contains information on how to use JOSM with a high-resolution display.
     4= HiDPI Support – Overview =
     5This page contains information on how to optimize the JOSM interface for a high-resolution display.
     6
    47
    58== Basics ==
    6 
    7 1. Proper HiDPI-support was added with Java 9, so make sure you are running Java 9 or later.
    8 2. JOSM version r12722 or later is required.
     91. Proper HiDPI-support was added with Java 9 and some improvements were made in the following versions, so make sure you are running the latest Java version.
     101. An [wikitr:/WikiStart up to date] JOSM version is required.
    911
    1012You can expect best results with even scale factors, e.g. 200%, 400%, ... but other values are supported as well.
    1113
     14
    1215== How to enable HiDPI mode ==
    13 
    1416If HiDPI mode is not enabled out-of-the-box, here are ways to activate it.
    1517
    1618=== Windows ===
     19On Windows, you can activate scaled display mode system-wide. See for example [http://pccleaningtools.com/how-to-enlarge-display-text-in-windows this] extensive help page.
    1720
    18 On Windows, you can activate scaled display mode for the system-wide. See for example [http://pccleaningtools.com/how-to-enlarge-display-text-in-windows this] extensive help page.
    19 
    20 For Windows 7, the option is called ''Display / Set custom text size (DPI)'', for Windows 8 it is called ''Display / Change the size of all items'' and for Windows 10 it is ''Display / Customize your display / Change the size of text, apps, and other items''
     21For Windows 7, the option is called ''Display / Set custom text size (DPI)'', for Windows 8 it is called ''Display / Change the size of all items'' and for Windows 10 it is ''Display / Customize your display / Change the size of text, apps, and other items''.
    2122
    2223=== Linux ===
    23 
    24 You can activate HiDPI-mode for one application by running it with the `GDK_SCALE` environment variable set to 2, 4, ..., e.g.
     24You can activate HiDPI-mode for one application by running it with the `GDK_SCALE` environment variable set to 2, 4, ..., e.g.:
    2525{{{#!bash
    2626GDK_SCALE=2 java -jar josm.jar
    2727}}}
     28If you want to keep it permanently, you can modify the config file, `josm` respectively `josm-latest`, usually located in `/etc/default/` (Debian/Ubuntu) or `/etc/conf.d/` (Arch) by adding this line at the end of the file:
     29{{{#!bash
     30export GDK_SCALE=2
     31}}}
     32
     33Alternatively, you can modify the java2d ui-scaling via the command line or the above config file. Refer to [wikitr:/Help/Preferences#Customizationalloperatingsystems] for details:
     34{{{#!bash
     35JOSM_ARGS="-Dsun.java2d.uiScale=2 {other args}"
     36}}}
     37
     38
     39== Tweaks ==
     40 Background imagery:: By default, the tiles of the background imagery are scaled by the same factor as other GUI elements. This ensures appropriate font size, in case the background imagery contains text and symbols. However, it leads to reduced image resolution.
     41
     42 Under [wikitr:/Help/Preferences/Imagery#Settings Imagery preferences / Settings] / ''Tiles zoom offset'', you can set an offset of 1. This makes JOSM fetch tiles of one zoom level higher and double the image resolution. Currently, this setting only applies to main map area and not the download dialog.
     43
     44 Menu font size:: The font size for the main menu can be scaled by a certain factor using the advanced preference value `gui.scale.menu.font`. It is intended for relatively small adjustments. (JOSM r12923 or later).
     45
     46 Icons sizes:: There are advanced options `iconsize.*` to tweak the default icon sizes. In particular `iconsize.smallicon` will affect the icons in front of menu items, but also on some other places, e.g. in the panels on the right.
     47
     48 HiDPISupport Style:: [wikitr:/Styles/HiDPISupport This] style scales the drawing of the map area using MapCSS tools. It was created at a time of poor HiDPI support in Java and should only be required in exceptional cases.
     49
     50 Image scaling (deprecated, experimental):: The advanced option `gui.scale` was used to scale the GUI, basically trying to implement what is now available as Java 9 HiDPI support. It only got as far as scaling images. Further development is not planned as it is obsoleted by the Java 9 features. This option may be removed in a future release of JOSM.