We need to include both the scale and the filtering
in the key for the texture cache, since those affect
the texture.
This fixes misrendering in the recorder in the inspector
whenever transforms are involved. An example where this
was showing up is testrevealer's swing transition.
Assume that the fully expanded revealer will likely get an allocation
that matches the child's minimum or natural allocation, so we
special-case these two values.
So when - due to the precision loss - multiple sizes would match the
current allocation, we don't pick one at random, we prefer the min and
nat size.
The preference of nat size over min sie was decided after an IRC vote,
we don't actually have an idea what's more likely to happen in the real
world.
Should we ever get better data, we might want to switch.
We use ceil() in measure(), so using it again will increase the
child's size whenever there is even a tiny rounding error.
This should also not make the size too small, because:
min = ceil(child_min * scale)
min / scale >= child_min
floor (min / scale) >= floor (child_min) = child_min
The last equality is because child_min is an integer.
Fixes#3137
After commit 7e77afe94c moved the deletion
of text into the signal handler, in order to make undo work, we need to
override the GtkEntryBuffer::deleted-text class closure when subclassing
GtkEntryBuffer, as well as overriding GtkEntryBufferClass.delete_text,
otherwise the default class closure will be invoked, and will try to
delete an empty buffer.
Fixes: #3140
Use the Windows API CryptProtectMemory() to encrypt the data that we want to
secure, and use CryptUnprotectMemory() to de-crypt the secured data that we
want to access, since mmap() and mlock() are not available on Windows.
We have a widget for password and passphrase entries, but we have no way
to handle the data securely. This is usually performed by a separate
GtkEntryBuffer—for instance, the one in GCR. While we have API for
setting a new entry buffer on GtkText, we don't have API for
GtkPasswordEntry, though, so the options are:
- expose additional API for GtkPasswordEntry to allow setting a secure
text buffer on the internal GtkText widget
- provide a secure text buffer out of the box
Given that an insecure-by-default GtkPasswordEntry is basically
pointless, might as well have a secure buffer built in.
We don't really need to make the password entry buffer public out of the
box, but we can re-evaluate at a later date.
Fixes: #2403
This adds a small demo of using OpenGL shaders, it renders a quad
over the entire widget with a custom fragment shader. The coordinates
and the uniform names are compatible with the ones on shadertoy.com
(although some features, like texture inputs are missing currently).
The default shader in the demo is
https://www.shadertoy.com/view/wsjBD3 which is CC0, so it is
redistributable by Gtk+ (most other shaders are CC-BY-NC-SA which
isn't obviously compatible). I also added a set of buttons loading
a few other CC0 shaders I found.
The only likely place where this is going to happen
is if a renderer was explicitly requested with the
GSK_RENDERER environment variable, and in that case,
it is misleading to silently use a different renderer.
