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Add support for static SVG images using resvg
crate (#36721)
This change adds support for rendering static SVG images using the `resvg` crate, allowing svg sources in the `img` tag and in CSS `background` and `content` properties. There are some limitations in using resvg: 1. There is no support for animations or interactivity as these would require implementing the full DOM layer of SVG specification. 2. Only system fonts can be used for text rendering. There is some mechanism to provide a custom font resolver to usvg, but that is not explored in this change. 3. resvg's handling of certain edge cases involving lack of explicit `width` and `height` on the root svg element deviates from what the specification expects from browsers. For example, resvg uses the values in `viewBox` to derive the missing width or height dimension, but without scaling that dimension to preserve the aspect ratio. It also doesn't allow overriding this behavior. Demo screenshot:  <details> <summary>Source</summary> ``` <style> #svg1 { border: 1px solid red; } #svg2 { border: 1px solid red; width: 300px; } #svg3 { border: 1px solid red; width: 300px; height: 200px; object-fit: contain; } #svg4 { border: 1px solid red; width: 300px; height: 200px; object-fit: cover; } #svg5 { border: 1px solid red; width: 300px; height: 200px; object-fit: fill; } #svg6 { border: 1px solid red; width: 300px; height: 200px; object-fit: none; } </style> </head> <body> <div> <img id="svg1" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo"> </div> <div> <img id="svg2" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo"> <img id="svg3" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo"> <img id="svg4" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo"> </div> <div> <img id="svg5" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo"> <img id="svg6" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo"> </div> </body> ``` </details> --------- Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com> Signed-off-by: Martin Robinson <mrobinson@igalia.com> Co-authored-by: Martin Robinson <mrobinson@igalia.com>
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@ -30,7 +30,7 @@ use log::warn;
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use malloc_size_of::malloc_size_of_is_0;
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use malloc_size_of_derive::MallocSizeOf;
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use num_derive::FromPrimitive;
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use pixels::Image;
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use pixels::RasterImage;
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use serde::{Deserialize, Deserializer, Serialize, Serializer};
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use servo_url::ServoUrl;
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use strum_macros::IntoStaticStr;
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@ -674,16 +674,16 @@ pub struct Notification {
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/// The URL of an icon. The icon will be displayed as part of the notification.
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pub icon_url: Option<ServoUrl>,
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/// Icon's raw image data and metadata.
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pub icon_resource: Option<Arc<Image>>,
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pub icon_resource: Option<Arc<RasterImage>>,
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/// The URL of a badge. The badge is used when there is no enough space to display the notification,
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/// such as on a mobile device's notification bar.
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pub badge_url: Option<ServoUrl>,
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/// Badge's raw image data and metadata.
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pub badge_resource: Option<Arc<Image>>,
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pub badge_resource: Option<Arc<RasterImage>>,
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/// The URL of an image. The image will be displayed as part of the notification.
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pub image_url: Option<ServoUrl>,
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/// Image's raw image data and metadata.
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pub image_resource: Option<Arc<Image>>,
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pub image_resource: Option<Arc<RasterImage>>,
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/// Actions available for users to choose from for interacting with the notification.
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pub actions: Vec<NotificationAction>,
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}
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@ -698,7 +698,7 @@ pub struct NotificationAction {
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/// The URL of an icon. The icon will be displayed with the action.
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pub icon_url: Option<ServoUrl>,
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/// Icon's raw image data and metadata.
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pub icon_resource: Option<Arc<Image>>,
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pub icon_resource: Option<Arc<RasterImage>>,
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}
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/// Information about a `WebView`'s screen geometry and offset. This is used
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