diff options
Diffstat (limited to 'src/block/imagedescriptor.rs')
| -rw-r--r-- | src/block/imagedescriptor.rs | 102 |
1 files changed, 51 insertions, 51 deletions
diff --git a/src/block/imagedescriptor.rs b/src/block/imagedescriptor.rs index 415bee7..25567b2 100644 --- a/src/block/imagedescriptor.rs +++ b/src/block/imagedescriptor.rs @@ -1,73 +1,73 @@ use std::convert::TryInto; pub struct ImageDescriptor { - // Image Seperator 0x2C is the first byte // - pub left: u16, - pub top: u16, - pub width: u16, - pub height: u16, - pub packed: u8, + // Image Seperator 0x2C is the first byte // + pub left: u16, + pub top: u16, + pub width: u16, + pub height: u16, + pub packed: u8, } impl ImageDescriptor { - pub fn set_color_table_present(&mut self, is_present: bool) { - if is_present { - self.packed |= 0b1000_0000; - } else { - self.packed &= 0b0111_1111; - } - } + pub fn set_color_table_present(&mut self, is_present: bool) { + if is_present { + self.packed |= 0b1000_0000; + } else { + self.packed &= 0b0111_1111; + } + } - pub fn set_color_table_size(&mut self, size: u8) { - // GCT size is calulated by raising two to this number plus one, - // so we have to work backwards. - let size = (size as f32).log2().ceil() - 1f32; - self.packed |= size as u8; - } + pub fn set_color_table_size(&mut self, size: u8) { + // GCT size is calulated by raising two to this number plus one, + // so we have to work backwards. + let size = (size as f32).log2().ceil() - 1f32; + self.packed |= size as u8; + } - //TODO: Setter for sort flag in packed field - //TODO: Setter for interlace flag in packed field + //TODO: Setter for sort flag in packed field + //TODO: Setter for interlace flag in packed field - pub fn color_table_present(&self) -> bool { - self.packed & 0b1000_0000 != 0 - } + pub fn color_table_present(&self) -> bool { + self.packed & 0b1000_0000 != 0 + } - pub fn color_table_size(&self) -> usize { - crate::packed_to_color_table_length(self.packed & 0b0000_0111) - } + pub fn color_table_size(&self) -> usize { + crate::packed_to_color_table_length(self.packed & 0b0000_0111) + } } impl From<&ImageDescriptor> for Box<[u8]> { - fn from(desc: &ImageDescriptor) -> Self { - let mut vec = vec![]; + fn from(desc: &ImageDescriptor) -> Self { + let mut vec = vec![]; - vec.push(0x2C); // Image Seperator - vec.extend_from_slice(&desc.left.to_le_bytes()); - vec.extend_from_slice(&desc.top.to_le_bytes()); - vec.extend_from_slice(&desc.width.to_le_bytes()); - vec.extend_from_slice(&desc.height.to_le_bytes()); - vec.push(desc.packed); + vec.push(0x2C); // Image Seperator + vec.extend_from_slice(&desc.left.to_le_bytes()); + vec.extend_from_slice(&desc.top.to_le_bytes()); + vec.extend_from_slice(&desc.width.to_le_bytes()); + vec.extend_from_slice(&desc.height.to_le_bytes()); + vec.push(desc.packed); - vec.into_boxed_slice() - } + vec.into_boxed_slice() + } } impl From<[u8; 9]> for ImageDescriptor { - fn from(arr: [u8; 9]) -> Self { - let left = u16::from_le_bytes(arr[0..2].try_into().unwrap()); - let top = u16::from_le_bytes(arr[2..4].try_into().unwrap()); - let width = u16::from_le_bytes(arr[4..6].try_into().unwrap()); - let height = u16::from_le_bytes(arr[6..8].try_into().unwrap()); - let packed = arr[8]; + fn from(arr: [u8; 9]) -> Self { + let left = u16::from_le_bytes(arr[0..2].try_into().unwrap()); + let top = u16::from_le_bytes(arr[2..4].try_into().unwrap()); + let width = u16::from_le_bytes(arr[4..6].try_into().unwrap()); + let height = u16::from_le_bytes(arr[6..8].try_into().unwrap()); + let packed = arr[8]; - Self { - left, - top, - width, - height, - packed, - } - } + Self { + left, + top, + width, + height, + packed, + } + } } //TODO: Impl to allow changing the packed field easier |