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platform_bootable_recovery/tools/recovery_l10n
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Treehugger Robot b1d2e32e48 Merge "[LSC] Add LOCAL_LICENSE_KINDS to bootable/recovery" am: 1055a2f07a am: d9a0aa10ba am: d2b1584e7f am: 39e0f59573 
Original change: https://android-review.googlesource.com/c/platform/bootable/recovery/+/1589034

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: If72100c1bc38b6c4f4a31bc78c8802f2c071f696
2021-02-16 20:11:26 +00:00
..
res Import translations. DO NOT MERGE ANYWHERE 2021-02-11 14:26:54 +00:00
src/com/android/recovery_l10n Update background text images in recovery 2017-01-07 00:32:40 +00:00
Android.bp [LSC] Add LOCAL_LICENSE_KINDS to bootable/recovery 2021-02-14 10:37:20 -08:00
AndroidManifest.xml Move recovery_l10n here from development/tools. 2016-03-26 08:45:51 -07:00
README.md Restore the max width for recovery background texts 2017-01-22 18:46:04 -08:00

README.md

Steps to regenerate background text images under res-*dpi/images/

  1. Build the recovery_l10n app:

    cd bootable/recovery && mma -j32

  2. Install the app on the device (or emulator) with the intended dpi.

    • For example, we can use Nexus 5 to generate the text images under res-xxhdpi.
    • We can set up the maximum width of the final png image in res/layout/main.xml Currently, the image width is 1200px for xxxhdpi, 900px for xxhdpi and 480px for xhdpi/hdpi/mdpi.
    • When using the emulator, make sure the NDK version matches the current repository. Otherwise, the app may not work properly.

    adb install $PATH_TO_APP

  3. Run the app, select the string to translate and press the 'go' button.

  4. After the app goes through the strings for all locales, pull the output png file from the device.

    adb root && adb pull /data/data/com.android.recovery_l10n/files/text-out.png

  5. Compress the output file put it under the corresponding directory.

    • "pngcrush -c 0 ..." converts "text-out.png" into a 1-channel image, which is accepted by Recovery. This also compresses the image file by ~60%.
    • zopflipng could further compress the png files by ~10%, more details in https://github.com/google/zopfli/blob/master/README.zopflipng
    • If you're using other png compression tools, make sure the final text image works by running graphic tests under the recovery mode.

    pngcrush -c 0 text-out.png $OUTPUT_PNG