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imagebitmap: Crop bitmap data with formatting (#37397)
Follow the ImageBitmap specification and make cropping of the bitmap data to the source rectangle with formatting: https://html.spec.whatwg.org/multipage/#cropped-to-the-source-rectangle-with-formatting For now the next functionality not implemented: - image orientation support (such as EXIF metadata) - color space conversion (image, blob) The convertion from ResizeQuality to "image" FilterType: - pixelated/low/medium/high -> Nearest/Triangle/CatmullRom/Lanczos3 Other browsers use the following sample filtering: - chromium (skia): Nearest/Linear/Linear/CatmullRom - firefox (skia): Lanczos3 Testing: Improvements in the following WPT tests - html/canvas/element/manual/imagebitmap/* Fixes (partially): #34112 Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
This commit is contained in:
parent
0f61361e27
commit
bcade589e7
12 changed files with 441 additions and 164 deletions
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@ -10,13 +10,26 @@ use std::{cmp, fmt, vec};
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use euclid::default::{Point2D, Rect, Size2D};
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use euclid::default::{Point2D, Rect, Size2D};
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use image::codecs::gif::GifDecoder;
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use image::codecs::gif::GifDecoder;
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use image::{AnimationDecoder as _, ImageFormat};
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use image::imageops::{self, FilterType};
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use image::{AnimationDecoder as _, ImageBuffer, ImageFormat, Rgba};
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use ipc_channel::ipc::IpcSharedMemory;
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use ipc_channel::ipc::IpcSharedMemory;
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use log::debug;
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use log::debug;
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use malloc_size_of_derive::MallocSizeOf;
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use malloc_size_of_derive::MallocSizeOf;
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use serde::{Deserialize, Serialize};
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use serde::{Deserialize, Serialize};
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use webrender_api::ImageKey;
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use webrender_api::ImageKey;
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#[derive(Clone, Copy, Debug, Deserialize, Eq, MallocSizeOf, PartialEq, Serialize)]
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pub enum FilterQuality {
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/// No image interpolation (Nearest-neighbor)
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None,
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/// Low-quality image interpolation (Bilinear)
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Low,
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/// Medium-quality image interpolation (CatmullRom, Mitchell)
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Medium,
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/// High-quality image interpolation (Lanczos)
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High,
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}
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#[derive(Clone, Copy, Debug, Deserialize, Eq, MallocSizeOf, PartialEq, Serialize)]
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#[derive(Clone, Copy, Debug, Deserialize, Eq, MallocSizeOf, PartialEq, Serialize)]
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pub enum PixelFormat {
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pub enum PixelFormat {
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/// Luminance channel only
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/// Luminance channel only
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@ -31,8 +44,8 @@ pub enum PixelFormat {
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BGRA8,
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BGRA8,
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}
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}
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// Computes image byte length, returning None if overflow occurred or the total length exceeds
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/// Computes image byte length, returning None if overflow occurred or the total length exceeds
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// the maximum image allocation size.
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/// the maximum image allocation size.
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pub fn compute_rgba8_byte_length_if_within_limit(width: usize, height: usize) -> Option<usize> {
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pub fn compute_rgba8_byte_length_if_within_limit(width: usize, height: usize) -> Option<usize> {
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// Maximum allowed image allocation size (2^31-1 ~ 2GB).
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// Maximum allowed image allocation size (2^31-1 ~ 2GB).
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const MAX_IMAGE_BYTE_LENGTH: usize = 2147483647;
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const MAX_IMAGE_BYTE_LENGTH: usize = 2147483647;
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@ -45,6 +58,89 @@ pub fn compute_rgba8_byte_length_if_within_limit(width: usize, height: usize) ->
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.filter(|v| *v <= MAX_IMAGE_BYTE_LENGTH)
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.filter(|v| *v <= MAX_IMAGE_BYTE_LENGTH)
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}
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}
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/// Copies the rectangle of the source image to the destination image.
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pub fn copy_rgba8_image(
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src_size: Size2D<u32>,
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src_rect: Rect<u32>,
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src_pixels: &[u8],
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dest_size: Size2D<u32>,
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dest_rect: Rect<u32>,
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dest_pixels: &mut [u8],
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) {
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assert!(!src_rect.is_empty());
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assert!(!dest_rect.is_empty());
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assert!(Rect::from_size(src_size).contains_rect(&src_rect));
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assert!(Rect::from_size(dest_size).contains_rect(&dest_rect));
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assert!(src_rect.size == dest_rect.size);
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assert_eq!(src_pixels.len() % 4, 0);
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assert_eq!(dest_pixels.len() % 4, 0);
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if src_size == dest_size && src_rect == dest_rect {
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dest_pixels.copy_from_slice(src_pixels);
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return;
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}
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let src_first_column_start = src_rect.origin.x as usize * 4;
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let src_row_length = src_size.width as usize * 4;
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let src_first_row_start = src_rect.origin.y as usize * src_row_length;
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let dest_first_column_start = dest_rect.origin.x as usize * 4;
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let dest_row_length = dest_size.width as usize * 4;
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let dest_first_row_start = dest_rect.origin.y as usize * dest_row_length;
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let (chunk_length, chunk_count) = (
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src_rect.size.width as usize * 4,
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src_rect.size.height as usize,
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);
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for i in 0..chunk_count {
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let src = &src_pixels[src_first_row_start + i * src_row_length..][src_first_column_start..]
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[..chunk_length];
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let dest = &mut dest_pixels[dest_first_row_start + i * dest_row_length..]
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[dest_first_column_start..][..chunk_length];
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dest.copy_from_slice(src);
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}
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}
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/// Scales the source image to the required size, performing sampling filter algorithm.
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pub fn scale_rgba8_image(
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size: Size2D<u32>,
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pixels: &[u8],
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required_size: Size2D<u32>,
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quality: FilterQuality,
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) -> Option<Vec<u8>> {
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let filter = match quality {
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FilterQuality::None => FilterType::Nearest,
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FilterQuality::Low => FilterType::Triangle,
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FilterQuality::Medium => FilterType::CatmullRom,
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FilterQuality::High => FilterType::Lanczos3,
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};
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let buffer: ImageBuffer<Rgba<u8>, &[u8]> =
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ImageBuffer::from_raw(size.width, size.height, pixels)?;
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let scaled_buffer =
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imageops::resize(&buffer, required_size.width, required_size.height, filter);
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Some(scaled_buffer.into_vec())
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}
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/// Flips the source image vertically in place.
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pub fn flip_y_rgba8_image_inplace(size: Size2D<u32>, pixels: &mut [u8]) {
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assert_eq!(pixels.len() % 4, 0);
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let row_length = size.width as usize * 4;
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let half_height = (size.height / 2) as usize;
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let (left, right) = pixels.split_at_mut(pixels.len() - row_length * half_height);
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for i in 0..half_height {
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let top = &mut left[i * row_length..][..row_length];
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let bottom = &mut right[(half_height - i - 1) * row_length..][..row_length];
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top.swap_with_slice(bottom);
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}
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}
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pub fn rgba8_get_rect(pixels: &[u8], size: Size2D<u32>, rect: Rect<u32>) -> Cow<[u8]> {
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pub fn rgba8_get_rect(pixels: &[u8], size: Size2D<u32>, rect: Rect<u32>) -> Cow<[u8]> {
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assert!(!rect.is_empty());
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assert!(!rect.is_empty());
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assert!(Rect::from_size(size).contains_rect(&rect));
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assert!(Rect::from_size(size).contains_rect(&rect));
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60
components/pixels/tests/pixels.rs
Normal file
60
components/pixels/tests/pixels.rs
Normal file
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@ -0,0 +1,60 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use euclid::default::Size2D;
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use pixels::flip_y_rgba8_image_inplace;
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const RED: [u8; 4] = [255, 0, 0, 255];
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const GREEN: [u8; 4] = [0, 255, 0, 255];
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const BLUE: [u8; 4] = [0, 0, 255, 255];
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const YELLOW: [u8; 4] = [255, 255, 0, 255];
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const COLORS: [[u8; 4]; 4] = [RED, GREEN, BLUE, YELLOW];
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fn create_rgba8_image(number_of_pixels: usize) -> Vec<u8> {
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(0..number_of_pixels)
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.map(|i| COLORS[i % 4])
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.flatten()
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.collect()
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}
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#[test]
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fn test_flip_y_rgba8_image_inplace() {
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// | R G | B Y | -> | B Y | R G |
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let mut image2x2 = create_rgba8_image(4);
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flip_y_rgba8_image_inplace(Size2D::new(2, 2), &mut image2x2);
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assert_eq!(
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&image2x2[0..4],
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&BLUE,
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"Expected blue color at [0, 0] (image2x2)"
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);
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assert_eq!(
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&image2x2[12..16],
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&GREEN,
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"Expected green color at [1, 1] (image2x2)"
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);
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// | R G B | Y R G | B Y R | -> | B Y R | Y R G | R G B |
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let mut image3x3 = create_rgba8_image(9);
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flip_y_rgba8_image_inplace(Size2D::new(3, 3), &mut image3x3);
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assert_eq!(
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&image3x3[0..4],
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&BLUE,
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"Expected blue color at [0, 0] (image3x3)"
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);
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assert_eq!(
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&image3x3[16..20],
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&RED,
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"Expected red color at [1, 1] (image3x3)"
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);
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assert_eq!(
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&image3x3[32..36],
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&BLUE,
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"Expected blue color at [2, 2] (image3x3)"
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);
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}
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@ -2970,8 +2970,8 @@ impl GlobalScope {
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pub(crate) fn create_image_bitmap(
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pub(crate) fn create_image_bitmap(
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&self,
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&self,
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image: ImageBitmapSource,
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image: ImageBitmapSource,
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_sx: i32,
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sx: i32,
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_sy: i32,
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sy: i32,
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sw: Option<i32>,
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sw: Option<i32>,
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sh: Option<i32>,
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sh: Option<i32>,
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options: &ImageBitmapOptions,
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options: &ImageBitmapOptions,
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@ -3026,8 +3026,8 @@ impl GlobalScope {
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return p;
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return p;
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};
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};
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// TODO: Support vector HTMLImageElement.
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let Some(img) = img.as_raster_image() else {
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let Some(img) = img.as_raster_image() else {
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// Vector HTMLImageElement are not yet supported.
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p.reject_error(Error::InvalidState, can_gc);
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p.reject_error(Error::InvalidState, can_gc);
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return p;
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return p;
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};
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};
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@ -3051,7 +3051,18 @@ impl GlobalScope {
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IpcSharedMemory::from_bytes(img.first_frame().bytes),
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IpcSharedMemory::from_bytes(img.first_frame().bytes),
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);
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);
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let image_bitmap = ImageBitmap::new(self, snapshot, can_gc);
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// Step 6.3. Set imageBitmap's bitmap data to a copy of image's media data,
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// cropped to the source rectangle with formatting.
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let Some(bitmap_data) =
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ImageBitmap::crop_and_transform_bitmap_data(snapshot, sx, sy, sw, sh, options)
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else {
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p.reject_error(Error::InvalidState, can_gc);
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return p;
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};
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let image_bitmap = ImageBitmap::new(self, bitmap_data, can_gc);
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// Step 6.4. If image is not origin-clean, then set the origin-clean flag
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// of imageBitmap's bitmap to false.
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image_bitmap.set_origin_clean(image.same_origin(GlobalScope::entry().origin()));
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image_bitmap.set_origin_clean(image.same_origin(GlobalScope::entry().origin()));
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p.resolve_native(&image_bitmap, can_gc);
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p.resolve_native(&image_bitmap, can_gc);
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@ -3063,6 +3074,8 @@ impl GlobalScope {
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return p;
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return p;
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}
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}
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// Step 6.1. If image's networkState attribute is NETWORK_EMPTY, then return
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// a promise rejected with an "InvalidStateError" DOMException.
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if video.is_network_state_empty() {
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if video.is_network_state_empty() {
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p.reject_error(Error::InvalidState, can_gc);
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p.reject_error(Error::InvalidState, can_gc);
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return p;
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return p;
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@ -3074,7 +3087,20 @@ impl GlobalScope {
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return p;
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return p;
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};
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};
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let image_bitmap = ImageBitmap::new(self, snapshot, can_gc);
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// Step 6.2. Set imageBitmap's bitmap data to a copy of the frame at the current
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// playback position, at the media resource's natural width and natural height
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// (i.e., after any aspect-ratio correction has been applied),
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// cropped to the source rectangle with formatting.
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let Some(bitmap_data) =
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ImageBitmap::crop_and_transform_bitmap_data(snapshot, sx, sy, sw, sh, options)
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else {
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p.reject_error(Error::InvalidState, can_gc);
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return p;
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};
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let image_bitmap = ImageBitmap::new(self, bitmap_data, can_gc);
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// Step 6.3. If image is not origin-clean, then set the origin-clean flag
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// of imageBitmap's bitmap to false.
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image_bitmap.set_origin_clean(video.origin_is_clean());
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image_bitmap.set_origin_clean(video.origin_is_clean());
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p.resolve_native(&image_bitmap, can_gc);
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p.resolve_native(&image_bitmap, can_gc);
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@ -3092,7 +3118,18 @@ impl GlobalScope {
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return p;
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return p;
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};
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};
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let image_bitmap = ImageBitmap::new(self, snapshot, can_gc);
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// Step 6.1. Set imageBitmap's bitmap data to a copy of image's bitmap data,
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// cropped to the source rectangle with formatting.
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let Some(bitmap_data) =
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ImageBitmap::crop_and_transform_bitmap_data(snapshot, sx, sy, sw, sh, options)
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else {
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p.reject_error(Error::InvalidState, can_gc);
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return p;
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};
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let image_bitmap = ImageBitmap::new(self, bitmap_data, can_gc);
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// Step 6.2. Set the origin-clean flag of the imageBitmap's bitmap to the same value
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// as the origin-clean flag of image's bitmap.
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image_bitmap.set_origin_clean(canvas.origin_is_clean());
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image_bitmap.set_origin_clean(canvas.origin_is_clean());
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p.resolve_native(&image_bitmap, can_gc);
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p.resolve_native(&image_bitmap, can_gc);
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@ -3110,7 +3147,18 @@ impl GlobalScope {
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return p;
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return p;
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};
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};
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let image_bitmap = ImageBitmap::new(self, snapshot, can_gc);
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// Step 6.1. Set imageBitmap's bitmap data to a copy of image's bitmap data,
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// cropped to the source rectangle with formatting.
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let Some(bitmap_data) =
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ImageBitmap::crop_and_transform_bitmap_data(snapshot, sx, sy, sw, sh, options)
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else {
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p.reject_error(Error::InvalidState, can_gc);
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return p;
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};
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let image_bitmap = ImageBitmap::new(self, bitmap_data, can_gc);
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// Step 6.2. Set the origin-clean flag of imageBitmap's bitmap to the same value
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// as the origin-clean flag of image's bitmap.
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image_bitmap.set_origin_clean(bitmap.origin_is_clean());
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image_bitmap.set_origin_clean(bitmap.origin_is_clean());
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p.resolve_native(&image_bitmap, can_gc);
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p.resolve_native(&image_bitmap, can_gc);
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@ -3128,7 +3176,18 @@ impl GlobalScope {
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return p;
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return p;
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};
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};
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let image_bitmap = ImageBitmap::new(self, snapshot, can_gc);
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// Step 6.1. Set imageBitmap's bitmap data to a copy of image's bitmap data,
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// cropped to the source rectangle with formatting.
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let Some(bitmap_data) =
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ImageBitmap::crop_and_transform_bitmap_data(snapshot, sx, sy, sw, sh, options)
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else {
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p.reject_error(Error::InvalidState, can_gc);
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||||||
|
return p;
|
||||||
|
};
|
||||||
|
|
||||||
|
let image_bitmap = ImageBitmap::new(self, bitmap_data, can_gc);
|
||||||
|
// Step 6.2. Set the origin-clean flag of the imageBitmap's bitmap to the same value
|
||||||
|
// as the origin-clean flag of image's bitmap.
|
||||||
image_bitmap.set_origin_clean(canvas.origin_is_clean());
|
image_bitmap.set_origin_clean(canvas.origin_is_clean());
|
||||||
|
|
||||||
p.resolve_native(&image_bitmap, can_gc);
|
p.resolve_native(&image_bitmap, can_gc);
|
||||||
|
@ -3138,7 +3197,9 @@ impl GlobalScope {
|
||||||
p.reject_error(Error::InvalidState, can_gc);
|
p.reject_error(Error::InvalidState, can_gc);
|
||||||
},
|
},
|
||||||
ImageBitmapSource::ImageData(ref image_data) => {
|
ImageBitmapSource::ImageData(ref image_data) => {
|
||||||
// <https://html.spec.whatwg.org/multipage/#the-imagebitmap-interface:imagedata-4>
|
// Step 6.1. Let buffer be image's data attribute value's [[ViewedArrayBuffer]] internal slot.
|
||||||
|
// Step 6.2. If IsDetachedBuffer(buffer) is true, then return a promise rejected
|
||||||
|
// with an "InvalidStateError" DOMException.
|
||||||
if image_data.is_detached() {
|
if image_data.is_detached() {
|
||||||
p.reject_error(Error::InvalidState, can_gc);
|
p.reject_error(Error::InvalidState, can_gc);
|
||||||
return p;
|
return p;
|
||||||
|
@ -3155,7 +3216,16 @@ impl GlobalScope {
|
||||||
image_data.to_shared_memory(),
|
image_data.to_shared_memory(),
|
||||||
);
|
);
|
||||||
|
|
||||||
let image_bitmap = ImageBitmap::new(self, snapshot, can_gc);
|
// Step 6.3. Set imageBitmap's bitmap data to image's image data,
|
||||||
|
// cropped to the source rectangle with formatting.
|
||||||
|
let Some(bitmap_data) =
|
||||||
|
ImageBitmap::crop_and_transform_bitmap_data(snapshot, sx, sy, sw, sh, options)
|
||||||
|
else {
|
||||||
|
p.reject_error(Error::InvalidState, can_gc);
|
||||||
|
return p;
|
||||||
|
};
|
||||||
|
|
||||||
|
let image_bitmap = ImageBitmap::new(self, bitmap_data, can_gc);
|
||||||
|
|
||||||
p.resolve_native(&image_bitmap, can_gc);
|
p.resolve_native(&image_bitmap, can_gc);
|
||||||
},
|
},
|
||||||
|
|
|
@ -8,10 +8,13 @@ use std::collections::HashMap;
|
||||||
use base::id::{ImageBitmapId, ImageBitmapIndex};
|
use base::id::{ImageBitmapId, ImageBitmapIndex};
|
||||||
use constellation_traits::SerializableImageBitmap;
|
use constellation_traits::SerializableImageBitmap;
|
||||||
use dom_struct::dom_struct;
|
use dom_struct::dom_struct;
|
||||||
|
use euclid::default::{Point2D, Rect, Size2D};
|
||||||
use snapshot::Snapshot;
|
use snapshot::Snapshot;
|
||||||
|
|
||||||
use crate::dom::bindings::cell::DomRefCell;
|
use crate::dom::bindings::cell::DomRefCell;
|
||||||
use crate::dom::bindings::codegen::Bindings::ImageBitmapBinding::ImageBitmapMethods;
|
use crate::dom::bindings::codegen::Bindings::ImageBitmapBinding::{
|
||||||
|
ImageBitmapMethods, ImageBitmapOptions, ImageOrientation, PremultiplyAlpha, ResizeQuality,
|
||||||
|
};
|
||||||
use crate::dom::bindings::reflector::{Reflector, reflect_dom_object};
|
use crate::dom::bindings::reflector::{Reflector, reflect_dom_object};
|
||||||
use crate::dom::bindings::root::DomRoot;
|
use crate::dom::bindings::root::DomRoot;
|
||||||
use crate::dom::bindings::serializable::Serializable;
|
use crate::dom::bindings::serializable::Serializable;
|
||||||
|
@ -71,6 +74,197 @@ impl ImageBitmap {
|
||||||
pub(crate) fn is_detached(&self) -> bool {
|
pub(crate) fn is_detached(&self) -> bool {
|
||||||
self.bitmap_data.borrow().is_none()
|
self.bitmap_data.borrow().is_none()
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/// <https://html.spec.whatwg.org/multipage/#cropped-to-the-source-rectangle-with-formatting>
|
||||||
|
pub(crate) fn crop_and_transform_bitmap_data(
|
||||||
|
input: Snapshot,
|
||||||
|
mut sx: i32,
|
||||||
|
mut sy: i32,
|
||||||
|
sw: Option<i32>,
|
||||||
|
sh: Option<i32>,
|
||||||
|
options: &ImageBitmapOptions,
|
||||||
|
) -> Option<Snapshot> {
|
||||||
|
let input_size = input.size().to_i32();
|
||||||
|
|
||||||
|
// Step 2. If sx, sy, sw and sh are specified, let sourceRectangle be a rectangle whose corners
|
||||||
|
// are the four points (sx, sy), (sx+sw, sy), (sx+sw, sy+sh), (sx, sy+sh). Otherwise,
|
||||||
|
// let sourceRectangle be a rectangle whose corners are the four points (0, 0), (width of input, 0),
|
||||||
|
// (width of input, height of input), (0, height of input). If either sw or sh are negative,
|
||||||
|
// then the top-left corner of this rectangle will be to the left or above the (sx, sy) point.
|
||||||
|
let sw = sw.map_or(input_size.width, |width| {
|
||||||
|
if width < 0 {
|
||||||
|
sx = sx.saturating_add(width);
|
||||||
|
width.saturating_abs()
|
||||||
|
} else {
|
||||||
|
width
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
let sh = sh.map_or(input_size.height, |height| {
|
||||||
|
if height < 0 {
|
||||||
|
sy = sy.saturating_add(height);
|
||||||
|
height.saturating_abs()
|
||||||
|
} else {
|
||||||
|
height
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
let source_rect = Rect::new(Point2D::new(sx, sy), Size2D::new(sw, sh));
|
||||||
|
|
||||||
|
// Whether the byte length of the source bitmap exceeds the supported range.
|
||||||
|
// In the case the source is too large, we should fail, and that is not defined.
|
||||||
|
// <https://github.com/whatwg/html/issues/3323>
|
||||||
|
let Some(source_byte_length) = pixels::compute_rgba8_byte_length_if_within_limit(
|
||||||
|
source_rect.size.width as usize,
|
||||||
|
source_rect.size.height as usize,
|
||||||
|
) else {
|
||||||
|
log::warn!(
|
||||||
|
"Failed to allocate bitmap of size {:?}, too large",
|
||||||
|
source_rect.size
|
||||||
|
);
|
||||||
|
return None;
|
||||||
|
};
|
||||||
|
|
||||||
|
// Step 3. Let outputWidth be determined as follows:
|
||||||
|
// Step 4. Let outputHeight be determined as follows:
|
||||||
|
let output_size = match (options.resizeWidth, options.resizeHeight) {
|
||||||
|
(Some(width), Some(height)) => Size2D::new(width, height),
|
||||||
|
(Some(width), None) => {
|
||||||
|
let height =
|
||||||
|
source_rect.size.height as f64 * width as f64 / source_rect.size.width as f64;
|
||||||
|
Size2D::new(width, height.round() as u32)
|
||||||
|
},
|
||||||
|
(None, Some(height)) => {
|
||||||
|
let width =
|
||||||
|
source_rect.size.width as f64 * height as f64 / source_rect.size.height as f64;
|
||||||
|
Size2D::new(width.round() as u32, height)
|
||||||
|
},
|
||||||
|
(None, None) => source_rect.size.to_u32(),
|
||||||
|
};
|
||||||
|
|
||||||
|
// Whether the byte length of the output bitmap exceeds the supported range.
|
||||||
|
// In the case the output is too large, we should fail, and that is not defined.
|
||||||
|
// <https://github.com/whatwg/html/issues/3323>
|
||||||
|
let Some(output_byte_length) = pixels::compute_rgba8_byte_length_if_within_limit(
|
||||||
|
output_size.width as usize,
|
||||||
|
output_size.height as usize,
|
||||||
|
) else {
|
||||||
|
log::warn!(
|
||||||
|
"Failed to allocate bitmap of size {:?}, too large",
|
||||||
|
output_size
|
||||||
|
);
|
||||||
|
return None;
|
||||||
|
};
|
||||||
|
|
||||||
|
// TODO: Take into account the image orientation (such as EXIF metadata).
|
||||||
|
|
||||||
|
// Step 5. Place input on an infinite transparent black grid plane, positioned so that
|
||||||
|
// its top left corner is at the origin of the plane, with the x-coordinate increasing to the right,
|
||||||
|
// and the y-coordinate increasing down, and with each pixel in the input image data occupying a cell
|
||||||
|
// on the plane's grid.
|
||||||
|
let input_rect = Rect::new(Point2D::zero(), input_size);
|
||||||
|
|
||||||
|
let input_rect_cropped = source_rect
|
||||||
|
.intersection(&input_rect)
|
||||||
|
.unwrap_or(Rect::zero());
|
||||||
|
|
||||||
|
// Early out for empty tranformations.
|
||||||
|
if input_rect_cropped.is_empty() {
|
||||||
|
return Some(Snapshot::cleared(output_size));
|
||||||
|
}
|
||||||
|
|
||||||
|
// Step 6. Let output be the rectangle on the plane denoted by sourceRectangle.
|
||||||
|
let mut source: Snapshot = Snapshot::from_vec(
|
||||||
|
source_rect.size.cast(),
|
||||||
|
input.format(),
|
||||||
|
input.alpha_mode(),
|
||||||
|
vec![0; source_byte_length],
|
||||||
|
);
|
||||||
|
|
||||||
|
let source_rect_cropped = Rect::new(
|
||||||
|
Point2D::new(
|
||||||
|
input_rect_cropped.origin.x - source_rect.origin.x,
|
||||||
|
input_rect_cropped.origin.y - source_rect.origin.y,
|
||||||
|
),
|
||||||
|
input_rect_cropped.size,
|
||||||
|
);
|
||||||
|
|
||||||
|
pixels::copy_rgba8_image(
|
||||||
|
input.size(),
|
||||||
|
input_rect_cropped.cast(),
|
||||||
|
input.data(),
|
||||||
|
source.size(),
|
||||||
|
source_rect_cropped.cast(),
|
||||||
|
source.data_mut(),
|
||||||
|
);
|
||||||
|
|
||||||
|
// Step 7. Scale output to the size specified by outputWidth and outputHeight.
|
||||||
|
let mut output = if source.size() != output_size {
|
||||||
|
let quality = match options.resizeQuality {
|
||||||
|
ResizeQuality::Pixelated => pixels::FilterQuality::None,
|
||||||
|
ResizeQuality::Low => pixels::FilterQuality::Low,
|
||||||
|
ResizeQuality::Medium => pixels::FilterQuality::Medium,
|
||||||
|
ResizeQuality::High => pixels::FilterQuality::High,
|
||||||
|
};
|
||||||
|
|
||||||
|
let Some(output_data) =
|
||||||
|
pixels::scale_rgba8_image(source.size(), source.data(), output_size, quality)
|
||||||
|
else {
|
||||||
|
log::warn!(
|
||||||
|
"Failed to scale the bitmap of size {:?} to required size {:?}",
|
||||||
|
source.size(),
|
||||||
|
output_size
|
||||||
|
);
|
||||||
|
return None;
|
||||||
|
};
|
||||||
|
|
||||||
|
debug_assert_eq!(output_data.len(), output_byte_length);
|
||||||
|
|
||||||
|
Snapshot::from_vec(
|
||||||
|
output_size,
|
||||||
|
source.format(),
|
||||||
|
source.alpha_mode(),
|
||||||
|
output_data,
|
||||||
|
)
|
||||||
|
} else {
|
||||||
|
source
|
||||||
|
};
|
||||||
|
|
||||||
|
// Step 8. If the value of the imageOrientation member of options is "flipY",
|
||||||
|
// output must be flipped vertically, disregarding any image orientation metadata
|
||||||
|
// of the source (such as EXIF metadata), if any.
|
||||||
|
if options.imageOrientation == ImageOrientation::FlipY {
|
||||||
|
pixels::flip_y_rgba8_image_inplace(output.size(), output.data_mut());
|
||||||
|
}
|
||||||
|
|
||||||
|
// TODO: Step 9. If image is an img element or a Blob object, let val be the value
|
||||||
|
// of the colorSpaceConversion member of options, and then run these substeps:
|
||||||
|
|
||||||
|
// Step 10. Let val be the value of premultiplyAlpha member of options,
|
||||||
|
// and then run these substeps:
|
||||||
|
// TODO: Preserve the original input pixel format and perform conversion on demand.
|
||||||
|
match options.premultiplyAlpha {
|
||||||
|
PremultiplyAlpha::Default | PremultiplyAlpha::Premultiply => {
|
||||||
|
output.transform(
|
||||||
|
snapshot::AlphaMode::Transparent {
|
||||||
|
premultiplied: true,
|
||||||
|
},
|
||||||
|
snapshot::PixelFormat::BGRA,
|
||||||
|
);
|
||||||
|
},
|
||||||
|
PremultiplyAlpha::None => {
|
||||||
|
output.transform(
|
||||||
|
snapshot::AlphaMode::Transparent {
|
||||||
|
premultiplied: false,
|
||||||
|
},
|
||||||
|
snapshot::PixelFormat::BGRA,
|
||||||
|
);
|
||||||
|
},
|
||||||
|
}
|
||||||
|
|
||||||
|
// Step 11. Return output.
|
||||||
|
Some(output)
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
impl Serializable for ImageBitmap {
|
impl Serializable for ImageBitmap {
|
||||||
|
|
|
@ -195,6 +195,10 @@ impl Snapshot<Data> {
|
||||||
&self.data
|
&self.data
|
||||||
}
|
}
|
||||||
|
|
||||||
|
pub fn data_mut(&mut self) -> &mut [u8] {
|
||||||
|
&mut self.data
|
||||||
|
}
|
||||||
|
|
||||||
/// Convert inner data of snapshot to target format and alpha mode.
|
/// Convert inner data of snapshot to target format and alpha mode.
|
||||||
/// If data is already in target format and alpha mode no work will be done.
|
/// If data is already in target format and alpha mode no work will be done.
|
||||||
pub fn transform(&mut self, target_alpha_mode: AlphaMode, target_format: PixelFormat) {
|
pub fn transform(&mut self, target_alpha_mode: AlphaMode, target_format: PixelFormat) {
|
||||||
|
|
|
@ -1,16 +1,4 @@
|
||||||
[canvas-createImageBitmap-resize.html]
|
[canvas-createImageBitmap-resize.html]
|
||||||
[createImageBitmap from an ImageData with resize option.]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a HTMLImageElement with resize option.]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a HTMLCanvasElement with resize option.]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an ImageBitmap with resize option.]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a Blob with resize option.]
|
[createImageBitmap from a Blob with resize option.]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
|
|
|
@ -1,12 +0,0 @@
|
||||||
[createImageBitmap-bounds.html]
|
|
||||||
[simple clip inside]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[clip outside negative]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[clip outside positive]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[clip inside using negative width and height]
|
|
||||||
expected: FAIL
|
|
|
@ -1,40 +1,22 @@
|
||||||
[createImageBitmap-drawImage.html]
|
[createImageBitmap-drawImage.html]
|
||||||
[createImageBitmap from an OffscreenCanvas resized, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a vector HTMLImageElement resized, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a vector HTMLImageElement resized, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from a bitmap HTMLImageElement resized, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an HTMLVideoElement, and drawImage on the created ImageBitmap]
|
[createImageBitmap from an HTMLVideoElement, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an HTMLVideoElement from a data URL scaled down, and drawImage on the created ImageBitmap]
|
[createImageBitmap from an HTMLVideoElement from a data URL scaled down, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an ImageData scaled down, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an OffscreenCanvas scaled down, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a bitmap SVGImageElement, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a bitmap SVGImageElement, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from a bitmap SVGImageElement resized, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a bitmap SVGImageElement resized, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an HTMLCanvasElement scaled down, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a vector SVGImageElement, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a vector SVGImageElement, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an ImageData scaled up, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an HTMLVideoElement with negative sw/sh, and drawImage on the created ImageBitmap]
|
[createImageBitmap from an HTMLVideoElement with negative sw/sh, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
|
@ -44,18 +26,12 @@
|
||||||
[createImageBitmap from a vector SVGImageElement resized, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a vector SVGImageElement resized, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from a bitmap HTMLImageElement scaled up, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a vector SVGImageElement scaled down, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a vector SVGImageElement scaled down, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from a vector SVGImageElement with negative sw/sh, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a vector SVGImageElement with negative sw/sh, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from a bitmap HTMLImageElement scaled down, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an HTMLVideoElement scaled down, and drawImage on the created ImageBitmap]
|
[createImageBitmap from an HTMLVideoElement scaled down, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
|
@ -65,9 +41,6 @@
|
||||||
[createImageBitmap from a Blob scaled down, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a Blob scaled down, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an ImageData resized, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a vector HTMLImageElement scaled down, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a vector HTMLImageElement scaled down, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
|
@ -86,9 +59,6 @@
|
||||||
[createImageBitmap from an HTMLVideoElement scaled up, and drawImage on the created ImageBitmap]
|
[createImageBitmap from an HTMLVideoElement scaled up, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an HTMLCanvasElement resized, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a Blob, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a Blob, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
|
@ -98,27 +68,12 @@
|
||||||
[createImageBitmap from an HTMLVideoElement from a data URL scaled up, and drawImage on the created ImageBitmap]
|
[createImageBitmap from an HTMLVideoElement from a data URL scaled up, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an ImageBitmap scaled down, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a Blob with negative sw/sh, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a Blob with negative sw/sh, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from a bitmap SVGImageElement with negative sw/sh, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a bitmap SVGImageElement with negative sw/sh, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an ImageBitmap scaled up, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an ImageBitmap resized, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an OffscreenCanvas scaled up, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an HTMLCanvasElement scaled up, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a Blob resized, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a Blob resized, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
|
@ -133,9 +88,3 @@
|
||||||
|
|
||||||
[createImageBitmap from a vector HTMLImageElement scaled up, and drawImage on the created ImageBitmap]
|
[createImageBitmap from a vector HTMLImageElement scaled up, and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an ImageData, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an ImageData with negative sw/sh, and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
|
@ -1,16 +1,7 @@
|
||||||
[createImageBitmap-flipY.html]
|
[createImageBitmap-flipY.html]
|
||||||
[createImageBitmap from a vector SVGImageElement imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: NOTRUN
|
|
||||||
|
|
||||||
[createImageBitmap from a vector SVGImageElement imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
[createImageBitmap from a vector SVGImageElement imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an HTMLCanvasElement imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an ImageData imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: NOTRUN
|
|
||||||
|
|
||||||
[createImageBitmap from an HTMLVideoElement from a data URL imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
[createImageBitmap from an HTMLVideoElement from a data URL imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
|
@ -23,33 +14,9 @@
|
||||||
[createImageBitmap from a Blob imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
[createImageBitmap from a Blob imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an HTMLVideoElement imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an OffscreenCanvas imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: NOTRUN
|
|
||||||
|
|
||||||
[createImageBitmap from a vector HTMLImageElement imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a Blob imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: NOTRUN
|
|
||||||
|
|
||||||
[createImageBitmap from an HTMLVideoElement from a data URL imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an ImageBitmap imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: NOTRUN
|
|
||||||
|
|
||||||
[createImageBitmap from a bitmap HTMLImageElement imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a bitmap SVGImageElement imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
[createImageBitmap from a bitmap SVGImageElement imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from a bitmap SVGImageElement imageOrientation: "none", and drawImage on the created ImageBitmap]
|
|
||||||
expected: TIMEOUT
|
|
||||||
|
|
||||||
[createImageBitmap from an HTMLVideoElement imageOrientation: "from-image", and drawImage on the created ImageBitmap]
|
[createImageBitmap from an HTMLVideoElement imageOrientation: "from-image", and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
|
@ -67,21 +34,3 @@
|
||||||
|
|
||||||
[createImageBitmap from a Blob imageOrientation: "from-image", and drawImage on the created ImageBitmap]
|
[createImageBitmap from a Blob imageOrientation: "from-image", and drawImage on the created ImageBitmap]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap from an HTMLCanvasElement imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from a bitmap HTMLImageElement imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an OffscreenCanvas imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an ImageData imageOrientation: "from-image", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an ImageData imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap from an ImageBitmap imageOrientation: "flipY", and drawImage on the created ImageBitmap]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
|
@ -47,20 +47,5 @@
|
||||||
[createImageBitmap with a vector SVGImageElement source and a value between 0 and 1 in resizeWidth]
|
[createImageBitmap with a vector SVGImageElement source and a value between 0 and 1 in resizeWidth]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap with an HTMLCanvasElement source and oversized (unallocatable) crop region]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap with a bitmap HTMLImageElement source and oversized (unallocatable) crop region]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap with an OffscreenCanvas source and oversized (unallocatable) crop region]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap with an ImageData source and oversized (unallocatable) crop region]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap with an ImageBitmap source and oversized (unallocatable) crop region]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap with a bitmap SVGImageElement source and a value between 0 and 1 in resizeWidth]
|
[createImageBitmap with a bitmap SVGImageElement source and a value between 0 and 1 in resizeWidth]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
|
@ -1,9 +1,9 @@
|
||||||
[createImageBitmap-premultiplyAlpha.html]
|
[createImageBitmap-premultiplyAlpha.html]
|
||||||
[createImageBitmap: from ImageData, unpremultiplied, drawn to canvas]
|
[createImageBitmap: from Canvas2D, unpremultiplied, drawn to canvas]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap: from ImageData, premultiplied, drawn to canvas]
|
[createImageBitmap: from Canvas2D willReadFrequently:true, unpremultiplied, drawn to canvas]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
||||||
[createImageBitmap: from ImageData, default, drawn to canvas]
|
[createImageBitmap: from Canvas2D willReadFrequently:false, unpremultiplied, drawn to canvas]
|
||||||
expected: FAIL
|
expected: FAIL
|
||||||
|
|
|
@ -1,6 +0,0 @@
|
||||||
[createImageBitmap-sizeOverflow.html]
|
|
||||||
[createImageBitmap throws an InvalidStateError error with big imageBitmap scaled up in big height]
|
|
||||||
expected: FAIL
|
|
||||||
|
|
||||||
[createImageBitmap throws an InvalidStateError error with big imageBitmap scaled up in big width]
|
|
||||||
expected: FAIL
|
|
Loading…
Add table
Add a link
Reference in a new issue