crates/canvas/src/gpu/page.rs          |  89 +++++++++++++-------
 crates/canvas/src/interaction/mod.rs   |  22 ++++-
 crates/canvas/src/interaction/tests.rs | 140 ++++++++++++++++++++++++++++++++
 crates/canvas/src/reading.rs           |  93 ++++++++++++++++-----
 crates/mobile/src/tests.rs             |  63 ++++++++++++++
 5 files changed, 353 insertions(+), 54 deletions(-)