This gets rid of the last use of the offset_margin_width() magic number.
I initially tried using `character_width() * 10` and found it was not
accurate enough with between-character spacing, so instead this measures
a specific string. All offset strings should be the same width in a
fixed-width font.
We repeat the same calculations a lot, and it's easy to make mistakes.
m_address_bar_width and offset_margin_width() have basically the same
purpose, but both are a little wrong. This removes the former, but
we'll get to the latter soon.
Allow the user to highlight sections of the edited document, giving them
arbitrary background colors. These annotations can be created from a
selection, or by manually specifying the start and end offsets.
Annotations can be edited or deleted by right-clicking them.
Any color can be used for the background. Dark colors automatically make
the text white for easier readability. When creating a new annotation,
we use whatever color the user last picked as this is slightly more
likely to be the one they want.
Icons contributed by Cubic Love.
Co-authored-by: Cubic Love <7754483+cubiclove@users.noreply.github.com>
This patch changes cursor type from caret to black box for both Hex and
Text modes, because right now the way how blinking caret looks like is
more closer to "insert" mode in similar editors, whereas the real
behavior of this cursor is more of a "replace" mode seen in similar
editors like GHex.
Specifically, the ones HexEditor::did_complete_action possibly raised in
case creating an undo stack entry or pushing it onto the undo stack
fails. In this case, an error popup is displayed and the modifications
are undone.
This removes 2 FIXMEs inside the code :^)
To support editing of large files it is an advantage to not load the
entire file into memory but only load whatever is needed for display at
the moment. To make it work, file access is abstracted into a socalled
HexDocument, of which there two: a memory based and a file based one.
The former can be used for newly created documents, the latter for file
based editing.
Hex documents now do track changes instead of the HexEditor. HexEditor
only sets new values. This frees HexEditor of some responsibility.
For better visibility of wether the editing focus is on the hex or the
ascii view, render a blinking caret instead of a solid cell background.
For that to work, it's also necessary to change the way selection works.
The selection shouldn't extend to the current position but up to the
byte before it.
find_and_highlight() selected +1 too many bytes.
'Select All' selected +1 too many bytes past the end of
the buffer.
Status bar 'Selected Bytes' count was off by -1 when more
than zero bytes were selected.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
This API was a mostly gratuitous deviation from POSIX that gave up some
portability in exchange for avoiding the occasional strlen().
I don't think that was actually achieving anything valuable, so let's
just chill out and have the same open() API as everyone else. :^)
