sarasacw-picture/DEVNOTE.md

Developer Notes

This document describes maintenance workflows and policies of this repository that are easy to get wrong or hard to discover from the source tree alone. It is intended for developers of this repository; see README.md for general instructions.

Bumping the Version

The project version is maintained by hand in only one place, CMakeLists.txt. Modify its project statement at the top of the file when bumping the version.

Additionally, when releasing a new version of this application, please update all of the following items for a better user experience:

• NEWS: add a new section at the very top of the file, following the format of the existing entries.
• dist/org.sarasaschipworkshop.picture.metainfo.xml.liquid: add a new <release> element at the top of the <releases> section.

Finally, mark the release with a git tag named exactly x.y.z (no v prefix, strictly three numeric components).

Maintaining Translator Credits

When adding a new translator for an existing language, or a new language, please edit assets/htmls/special-thanks.html by hand to show the corresponding credits in the application interface.

If you have added a language for the application, please make sure to also add it for all distribution translations. The available languages of the distribution translations should be kept synchronized with the application translations.

Qt Version Support Policy

Policy for CI

• The Qt version installed by the Windows and macOS workflows is pinned to the one used by the hard fork upstream (Pineapple Pictures).
• The Ubuntu workflow always uses the Qt provided by the package manager of the latest Ubuntu LTS version.

Policy for the Project

The minimum Qt version that the project itself declares follows the formula min(A, B), where A is the lowest Qt version used by any CI workflow and B is the Qt version shipped by the latest Debian stable release.

File Type Associations

The image formats supported by this application are varied. Considering the workload of creating icons, we cannot assign each of them a dedicated icon, so it is inevitable that multiple file extensions share a single icon. We list this relation by packaging channel for developers, and at the same time you can also see the file extensions that each packaging channel wants to associate.

The assignment follows a categorization:

• Photographic and high dynamic range formats use the jpg icon.
• Formats that can carry transparency use the png icon.
• Bitmap artwork produced by graphics editors uses the bmp icon.
• Formats that contain animation use the gif icon.
• Vector formats, archaic formats, and icon formats use the svg icon.

MSIX Package

Cluster Name	Icon	File Extensions
JPEG	jpg	.jpg, .jpeg, .jfif
GIF	gif	.gif
PNG	png	.png, .apng
SVG	svg	.svg
WebP	png	.webp
AVIF	png	.avif
ICO	svg	.ico
ICNS	svg	.icns
PSD	bmp	.psd, .psb, .pdd, .psdt
KRA	bmp	.kra
XCF	bmp	.xcf
TARGA	svg	.tga
TIFF	jpg	.tif, .tiff
BMP	bmp	.bmp
WBMP	bmp	.wbmp
DDS	bmp	.dds
HDR	jpg	.hdr, .exr
IFF	svg	.iff
PIC	svg	.pic
PCX	svg	.pcx
QOI	png	.qoi
Sun Raster	svg	.ras, .sun
ORA	bmp	.ora
ANI	gif	.ani
PFM	jpg	.pfm, .phm
SGI	svg	.bw, .rgb, .rgba, .sgi
PXR	svg	.pxr
SCT	svg	.sct

Inno Setup Installer

Cluster Name	Icon	File Extensions
JPEG	jpg	.jpg, .jpeg, .jfif
GIF	gif	.gif
PNG	png	.png, .apng
SVG	svg	.svg
WebP	png	.webp
AVIF	png	.avif
ICO	svg	.ico
ICNS	svg	.icns
PSD	bmp	.psd, .psb, .pdd, .psdt
KRA	bmp	.kra
XCF	bmp	.xcf
TARGA	svg	.tga
TIFF	jpg	.tif, .tiff
BMP	bmp	.bmp
WBMP	bmp	.wbmp
DDS	bmp	.dds
HDR	jpg	.hdr, .exr
IFF	svg	.iff
PIC	svg	.pic
PCX	svg	.pcx
QOI	png	.qoi
Sun Raster	svg	.ras, .sun
ORA	bmp	.ora
ANI	gif	.ani
PFM	jpg	.pfm, .phm
SGI	svg	.bw, .rgb, .rgba, .sgi
PXR	svg	.pxr
SCT	svg	.sct

FreeDesktop Desktop Entry

Cluster Name	Mimetypes
JPEG	image/jpeg, image/jpg, image/jpe, image/jpeg24
PNG	image/png
GIF	image/gif
SVG	image/svg, image/svg+xml
BMP	image/bmp, image/bmp24
TIFF	image/tif, image/tiff, image/tiff24, image/ptif
DDS	image/dds
PCX	image/pcx
SGI	image/sgi
JNG	image/jng
JPEG 2000	image/j2k, image/jp2
PICT	image/pct
HD Photo	image/wdp
camera raw	image/arw, image/dng, image/mef
Targa variants	image/icb, image/vda, image/vst
XBM	image/xbm
PhotoCD	image/pcd

macOS Application Bundle

Cluster Name	Mimetypes	File Extensions
JPEG	image/jpeg	.jpg, .jpeg, .jfif
PNG	image/png	.png
WebP	image/webp	.webp
GIF	image/gif	.gif
SVG	image/svg+xml	.svg

Adding a New File Type

A new file type must be added to every channel listed above in the same change. Specifically, you should:

• Update the tables in this document accordingly.
• Windows RC File
  • Define the display name under the next numeric string key in dist/sarasacw-picture.rc.in.toml.
  • Extend the string table ID range in dist/sarasacw-picture.rc.in.liquid to cover the newly added string resource.
• MSIX Package
  • Define the display name in dist/AppxManifest.xml.in.toml.
  • Add a uap:FileTypeAssociation element to dist/AppxManifest.xml.in.liquid with the extensions, the display name reference, and the logo reference.
• Inno Setup Installer
  • Edit the [Registry] section of dist/scwpic.iss.in.liquid.
    • Copy an existing file family block, adjust the ProgId, the referenced string and icon resources, and the extension list.
    • Add the new extensions to the SupportedTypes registry key.
• FreeDesktop Desktop Entry
  • Append the mimetype to the MimeType= key of dist/org.sarasaschipworkshop.picture.desktop.liquid (the type name and icon are resolved by the desktop environment, so nothing else is needed).
• macOS Application Bundle
  • Add a CFBundleDocumentTypes entry to dist/Info.plist.in.liquid with the extensions, the display name, and the mimetypes.
  • Update dist/Info.plist.in.toml and dist/InfoPlist.strings.liquid for the display name translation.