WIP: background image supportmaster

1 files changed, 60 insertions, 0 deletions

diff --git a/core/src/background/background_image.rs b/core/src/background/background_image.rs
new file mode 100644
index 00000000..75d63dfc
--- /dev/null
+++ b/core/src/background/background_image.rs
@@ -0,0 +1,60 @@
+use crate::{Image, Point, Size};
+
+/// A background image.
+#[derive(Debug, Clone, PartialEq)]
+pub struct BackgroundImage {
+    // TODO: svg support
+    image: Image,
+    attachment: Attachment,
+    clip: Sizing,
+    origin: Sizing,
+    /// (x, y)
+    repeat: (Repeat, Repeat),
+    size: Size,
+    // filter_method: FilterMethod,
+    // opacity: f32,
+    // TODO: blend mode
+}
+
+impl BackgroundImage {
+    /// Scales the opacity  of the [`BackgroundImage`] by the given factor.
+    pub fn scale_opacity(mut self, factor: f32) -> Self {
+        let opacity = self.image.opacity * factor;
+        self.image = self.image.opacity(opacity);
+        self
+    }
+}
+
+/// An attachment property.
+#[derive(Debug, Clone, Copy, PartialEq, Default)]
+pub enum Attachment {
+    /// Fixed relative to the viewport.
+    Fixed,
+    /// Fixed relative to self.
+    #[default]
+    Local,
+}
+
+/// A sizing property.
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum Sizing {
+    /// At outside edge of border.
+    Border,
+    /// At outside edge of padding.
+    Padding,
+    /// At outside edge of content.
+    Content,
+}
+
+/// A repetition property.
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum Repeat {
+    /// Repeat beginning at offset. Will be clipped if necessary.
+    Repeat(Point),
+    /// Repeated as much as possible without clipping. Whitespace is evenly distributed between each instance.
+    Space,
+    /// Repeated as much as possible without clipping. Stretched until there is room for another to be added.
+    Round,
+    /// No repetition. Position defined by point. Will be clipped if necessary.
+    NoRepeat(Point),
+}