Previously, calling `.right()` on a `Gfx::Rect` would return the last
column's coordinate still inside the rectangle, or `left + width - 1`.
This is called 'endpoint inclusive' and does not make a lot of sense for
`Gfx::Rect<float>` where a rectangle of width 5 at position (0, 0) would
return 4 as its right side. This same problem exists for `.bottom()`.
This changes `Gfx::Rect` to be endpoint exclusive, which gives us the
nice property that `width = right - left` and `height = bottom - top`.
It enables us to treat `Gfx::Rect<int>` and `Gfx::Rect<float>` exactly
the same.
All users of `Gfx::Rect` have been updated accordingly.
Previously, we would get a line of junk pixels to the right or bottom of
the captured bitmap.
Two aspects to this:
- Use Painter's clip-rect functionality instead of trying to implement
it ourselves.
- Switch from ScalingMode::NearestFractional to ::NearestNeighbor.
Somehow, `draw_scaled_bitmap(NearestFractional)` draws outside of the
Painter's clip-rect. I can't discern any difference in behavior
between these two otherwise.
We also now use the same bitmap for drawing the grid as we used for the
bitmap, since this had issues where it wasn't drawn to the edge of the
bitmap.
Previously the content flickered when downsizing the window, because the
previously grabbed frame was still active, but was now too large for the
window.
This crops the source rect to a size where it now perfectly fits the
content area.
This patch adds a 512 frame timeline to Magnifier and the ability to
step through it with the arrow keys.
This makes it easier to check Serenity animations frame by frame for
correctness etc.
This adds an option for even more magnification, when you really need to
count pixels, as well as pausing the capture by pressing Space and
switching between magnification levels with keys 2, 4 & 8.
The only remaining sync call from client to server is now the call
that switches a window's backing store. That one actually relies on
the synchronization to hand over ownership of the backing stores,
so it has to stay synchronous for now.
This patch moves the magnifier rect computation over to the server side
to ensure that the mouse cursor position and the screen image never get
out of sync.
Instead of having the window non-resizable, it now defaults to a frame
size of 200 x 200 pixels but is user-resizable. The shown screenshot
updates its size accordingly. :^)
Sometimes we might need a larger view, or a non-square shape.
