Optional image features (linebender#1340)

CHANGELOG.md

@@ -74,6 +74,7 @@ You can find its changes [documented below](#060---2020-06-01).
 - `LensWrap` widget moved into widget module ([#1251] by [@cmyr])
 - `Delegate::command` now returns `Handled`, not `bool` ([#1298] by [@jneem])
 - `TextBox` selects all contents when tabbed to on macOS ([#1283] by [@cmyr])
+- All Image formats are now optional, reducing compile time and binary size by default ([#1340] by [@JAicewizard])
 
 ### Deprecated
 

druid-shell/Cargo.toml

@@ -18,6 +18,23 @@ default = ["gtk"]
 gtk = ["gio", "gdk", "gdk-sys", "glib", "glib-sys", "gtk-sys", "gtk-rs", "gdk-pixbuf"]
 x11 = ["x11rb", "nix", "cairo-sys-rs"]
 
+# passing on all the image features. AVIF is not supported because it does not
+# support decoding, and that's all we use `Image` for.
+image_png = ["piet-common/image_png"]
+jpeg = ["piet-common/jpeg"]
+jpeg_rayon = ["piet-common/jpeg_rayon"]
+gif = ["piet-common/gif"]
+bmp = ["piet-common/bmp"]
+ico = ["piet-common/ico"]
+tiff = ["piet-common/tiff"]
+webp = ["piet-common/webp"]
+pnm = ["piet-common/pnm"]
+dds = ["piet-common/dds"]
+tga = ["piet-common/tga"]
+farbfeld = ["piet-common/farbfeld"]
+dxt = ["piet-common/dxt"]
+hdr = ["piet-common/hdr"]
+
 [dependencies]
 # NOTE: When changing the piet or kurbo versions, ensure that
 #       the kurbo version included in piet is compatible with the kurbo version specified here.
@@ -33,7 +50,7 @@ anyhow = "1.0.32"
 keyboard-types = { version = "0.5.0", default_features = false }
 
 # Optional dependencies
-image = { version = "0.23.10", optional = true }
+image = { version = "0.23.10", optional = true, default_features = false }
 
 [target.'cfg(target_os="windows")'.dependencies]
 scopeguard = "1.1.0"

druid/Cargo.toml

@@ -26,6 +26,23 @@ image = ["druid-shell/image"]
 svg = ["usvg", "harfbuzz-sys"]
 x11 = ["druid-shell/x11"]
 
+# passing on all the image features. AVIF is not supported because it does not
+# support decoding, and that's all we use `Image` for.
+png = ["druid-shell/image_png"]
+jpeg = ["druid-shell/jpeg"]
+jpeg_rayon = ["druid-shell/jpeg_rayon"]
+gif = ["druid-shell/gif"]
+bmp = ["druid-shell/bmp"]
+ico = ["druid-shell/ico"]
+tiff = ["druid-shell/tiff"]
+webp = ["druid-shell/webp"]
+pnm = ["druid-shell/pnm"]
+dds = ["druid-shell/dds"]
+tga = ["druid-shell/tga"]
+farbfeld = ["druid-shell/farbfeld"]
+dxt = ["druid-shell/dxt"]
+hdr = ["druid-shell/hdr"]
+
 [dependencies]
 druid-shell = { version = "0.6.0", default-features = false, path = "../druid-shell" }
 druid-derive = { version = "0.3.1", path = "../druid-derive" }