Fixes apps showing redundant error messages and terminating
unnecessarily on failed file requests. It's nicer to drop the
user off at the equivalent of a default document on failure if
possible.
Also fixes TextEditor not showing response errors for missing files
in the recently opened list.
The pattern to construct `Application` was to use the `try_create`
method from the `C_OBJECT` macro. While being safe from an OOM
perspective, this method doesn't propagate errors from the constructor.
This patch make `Application` use the `C_OBJECT_ABSTRACT` and manually
define a `create` method that can bubble up errors from the
construction stage.
This commit also removes the ability to use `argc` and `argv` to
create an `Application`, only `Main`'s `Arguments` can be used.
From a user point of view, the patch renames `try_create` => `create`,
hence the huge number of modified files.
Previously, Frames could set both these properties along with a
thickness to confusing effect: Most shapes of the same shadowing only
differentiated at a thickness >= 2, and some not at all. This led
to a lot of creative but ultimately superfluous choices in the code.
Instead let's streamline our options, automate thickness, and get
the right look without so much guesswork.
Plain shadowing has been consolidated into a single Plain style,
and 0 thickness can be had by setting style to NoFrame.
This now defaults to serializing the path with percent decoded segments
(which is what all callers expect), but has an option not to. This fixes
`file://` URLs with spaces in their paths.
The name has been changed to serialize_path() path to make it more clear
that this method will generate a new string each call (except for the
cannot_be_a_base_url() case). A few callers have then been updated to
avoid repeatedly calling this function.
In the case where an error is created from an errno, calling
string_literal() will print nothing. Using Error's formatter
instead gives a more descriptive error message.
Previously, the position of the mask used to calculate the new
selection did not match the position of the active layer. The program
would crash when trying to set a mask pixel outside the bounds of the
active layer.
The "Resize Image" action will now scale layer such that
the corners of each layer maintain their position relative to the edge
of the canvas.
Previously, each layer was scaled to the same size of the canvas.
I had to add a set_title(String) helper function for ImageEditor because
TabWidget requires it. This is a temporary fix and will be handled in
subsequent commit.
Per-channel values of the pixel color are now displayed in the status
bar when the PickerTool is selected. This information obviously updates
on mousemove.
