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118 Commits

Author SHA1 Message Date
Andreas Kling
eabc097dd4 SharedGraphics: Oops, I was compiling puff() in SLOW mode for testing. 2019-03-24 00:53:16 +01:00
Andreas Kling
60d25f0f4a Kernel: Introduce threads, and refactor everything in support of it. 
The scheduler now operates on threads, rather than on processes.
Each process has a main thread, and can have any number of additional
threads. The process exits when the main thread exits.

This patch doesn't actually spawn any additional threads, it merely
does all the plumbing needed to make it possible. :^)
 2019-03-23 22:03:17 +01:00
Andreas Kling
92627154a7 FileManager: Add basic thumbnailing of PNG images. 
These use nearest neighbor and are computed synchronously on directory load
so it's neither fast nor very beautiful. These issues both need work on
other parts of the system to fix.
 2019-03-23 12:37:33 +01:00
Andreas Kling
86570d3b1a SharedGraphics: Add Painter::draw_scaled_bitmap(). 
It's just a simple nearest-neighbor scale with alpha blending but it gets
the job done.
 2019-03-22 04:20:10 +01:00
Andreas Kling
7c0a185970 Use the PNG loader for all images, and get rid of the .rgb files. 2019-03-22 00:21:03 +01:00
Andreas Kling
796bc56a13 PNGLoader: Reduce unfiltering branchiness even more. 
Use a dummy scanline for y=0 filled with all zeroes to avoid having to check
y on every iteration before grabbing color data from scanline[y - 1].
 2019-03-21 16:55:31 +01:00
Andreas Kling
cd1afde48c PNGLoader: Templatize the unfiltering functions to reduce branchiness. 
This also allows us to dodge processing alpha values in non-alpha PNGs
without a branch.
 2019-03-21 16:45:04 +01:00
Andreas Kling
cfc521d57e PNGLoader: Reorganize the unfiltering code to make it easier to work with. 2019-03-21 16:19:11 +01:00
Andreas Kling
fe25f957e5 PNGLoader: Allocate enough space for the compressed data buffer up front. 
This is a 2x speedup on wallpaper loading.
 2019-03-21 14:08:14 +01:00
Andreas Kling
332b5a96f6 PNGLoader: Remove a bunch of unnecessary data copying. 
Use ByteBuffer::wrap() to avoid copying buffers around a bit. This is about
a 10% speedup on loading a wallpaper-type PNG.
 2019-03-21 13:58:40 +01:00
Andreas Kling
65348e7dc1 PNGLoader: Support for color type 2 (RGB triplets) and multiple IDAT chunks. 2019-03-21 05:25:54 +01:00
Andreas Kling
42755e98cf SharedGraphics: Implement a simple PNG decoder. 
This is extremely unoptimized, but it does successfully load "folder32.png"
so it must be at least somewhat correct. :^)
 2019-03-21 03:57:42 +01:00
Andreas Kling
67009cee8e IRCClient: Add ability to change nickname. 2019-03-20 04:21:58 +01:00
Andreas Kling
e15cc4509f LibGUI: More GInputBox refinements. 
Fix some GBoxLayout bugs to make the buttons in GInputBox line up better.
There are still some imperfections due to rounding errors.
 2019-03-19 03:00:42 +01:00
Andreas Kling
55aa819077 IRCClient: Colorize some channel messages (joins, parts, topics) 2019-03-18 20:56:45 +01:00
Andreas Kling
f4b8e4966f SharedGraphics: Add Color::to_string(). 
This generates a string in the format "rgba(%d, %d, %d, %d)".
 2019-03-18 04:53:09 +01:00
Andreas Kling
4e451c1e92 Add client-side double buffering of window backing stores. 
This prevents flicker and looks rather good. The main downside is that
resizing gets even more sluggish. That's the price we pay for now.
 2019-03-17 04:23:54 +01:00
Andreas Kling
1c6dfc3282 AK: Make ByteBuffer's copy() and wrap() take void*. 
This way we don't have to cast whatever we're passing to copy()/wrap().
 2019-03-17 00:36:41 +01:00
Andreas Kling
ffe4522316 SharedGraphics: Allow passing a Font to text drawing functions. 
This way we don't have to juggle around with calls to Painter::set_font()
which simplifies a bunch of places.
 2019-03-09 21:24:12 +01:00
Andreas Kling
b8f999cbef About+LibGUI: Use a GBoxLayout for the About app. 2019-03-09 21:09:29 +01:00
Andreas Kling
88f6ce152f SharedGraphics: Add PainterStateSaver RAII helper and Point::operator-(). 
Two little things to help tidy up a bit in WSWindowManager.
 2019-03-09 16:54:41 +01:00
Andreas Kling
f7097d21f6 SharedGraphics: Give painter a state stack and save()/restore() operations. 
This will make some painting code a lot less confusing since there's no
need to manually undo translations, clips, etc.
 2019-03-09 16:48:02 +01:00
Andreas Kling
eda0866992 Add a C++ helper class for working with shared buffers. 
This is a bit more comfortable than passing the shared buffer ID manually
everywhere and keeping track of size etc.
 2019-03-08 12:24:05 +01:00
Andreas Kling
949c98c5af LibGUI: Implement GToolbar separators. 2019-03-07 23:01:36 +01:00
Andreas Kling
9867fe1025 GTextEditor: Add a ruler column that always shows the line numbers. 2019-03-07 20:05:05 +01:00
Andreas Kling
ce35cddb1b GTextEditor: Let's use a Vector for the line backing store. 
I'm eventually gonna want to replace this with something more clever,
like a automagically splicing vector or something, but for now, at least
we move away from immutable Strings.
 2019-03-07 14:35:32 +01:00
Andreas Kling
1ac71d1fb1 GTextEditor: Improvements to cursor rendering. 
The view now scrolls along with you as you move the cursor around.
 2019-03-07 13:13:25 +01:00
Andreas Kling
31d6b640eb Add a bold variant of Katica and make that the system's default bold font. 
..and do some minor tweaks to the font rendering code.
 2019-03-06 14:50:27 +01:00
Andreas Kling
66a5ddd94a More work on the variable-width font support. 
Katica is now the default system font, and it looks quite nice. :^)
I'm gonna need to refine the GTextBox movement stuff eventually,
but it works well-enough for basic editing now.
 2019-03-06 14:06:40 +01:00
Andreas Kling
7f6c81d90f Implement basic support for variable-width fonts. 
Also add a nice new font called Katica. It's not used anywhere yet but
I'm definitely itching to start using it. :^)
 2019-03-06 12:52:41 +01:00
Andreas Kling
0a86366c71 Make a preparation pass for variable-width fonts. 2019-03-06 11:03:10 +01:00
Andreas Kling
91031346e5 Kernel: More signal handling improvements. 
Finally fixed the weird flaky crashing when resizing Terminal windows.
It was because we were dispatching a signal to "current" from the scheduler.
Yet another thing I dislike about even having a "current" process while
we're in the scheduler. Not sure yet how to fix this.

Let the signal handler's kernel stack be a kmalloc() allocation for now.
Once we can do allocation of consecutive physical pages in the supervisor
memory region, we can use that for all types of kernel stacks.
 2019-03-05 12:52:35 +01:00
Andreas Kling
ef4d517429 LibGUI: Tweak focus appearance and add it to GTableView. 2019-03-04 10:12:09 +01:00
Andreas Kling
483e0a5526 SharedGraphics: Add Rect::center_within(Rect). 2019-03-03 13:34:50 +01:00
Andreas Kling
b5e5f26a82 Base: Add Csilla Bold 7x10 variant. 
It's nice to have a thin and a bold variant to complement each other.
 2019-03-01 02:50:50 +01:00
Andreas Kling
0776c51bf5 Base: Import a new font, Csilla Thin (7x10). 
I wanted to do a bitmap font with an odd number of columns for a while
and I finally got around to it. This really looks rather nice, so I'm
making it the default system font for now. :^)
 2019-03-01 01:52:20 +01:00
Andreas Kling
fd428d6ed3 SharedGraphics: Make Painter clipping work with translated clip origin. 2019-02-28 18:57:36 +01:00
Andreas Kling
b4c20789fb LibGUI: Allow specifying per-column text alignment. 2019-02-28 11:27:04 +01:00
Andreas Kling
40c8dd80d1 LibGUI: Draw separators between GTableView column headers. 2019-02-28 11:04:03 +01:00
Andreas Kling
9624b54703 More moving towards using signed types. 
I'm still feeling this out, but I am starting to like the general idea.
 2019-02-25 22:06:55 +01:00
Andreas Kling
901b7d5d91 Fix a bunch of compiler warnings. Not all, but a lot. 2019-02-25 19:05:51 +01:00
Andreas Kling
15fb917f28 Convert more RetainPtr use to Retained. 2019-02-25 16:04:08 +01:00
Andreas Kling
2cfcbdc735 AK: Add Retained<T>, like RetainPtr, but never null. 
Also use some Clang attribute wizardry to get a warning for use-after-move.
 2019-02-25 12:43:52 +01:00
Andreas Kling
75b100673f Switch over to building everything with i686-elf-g++. 2019-02-22 10:45:32 +01:00
Andreas Kling
6084cd0c56 Add concept of size increments to windowing system. 
Use this to implement incremental resizing for Terminal so that we only
ever resize to fit a perfect number of rows and columns.

This is very nice. :^)
 2019-02-21 00:21:23 +01:00
Andreas Kling
fa02d2a39b Rework the rendering model so that clients instantiate backing stores. 
This makes interactive resizing work a lot better, althought it's still not
perfect. There are still glitches and unpleasant flashes of zeroed memory.
 2019-02-20 22:08:14 +01:00
Andreas Kling
b704d3d295 LibGUI: Add a GToolBar class that can be populated with GActions. 
The same action can be added to both a menu and a toolbar.
Use this to put a toolbar into FileManager. This is pretty neat. :^)
 2019-02-20 02:39:46 +01:00
Andreas Kling
210646edd2 SharedGraphics: Minor tweaks in rect shattering code. 2019-02-19 16:37:12 +01:00
Andreas Kling
98784ad3cb WindowServer: Avoid overdraw by shattering dirty rects into unique shards. 
The algorithm I came up with is O(n^2) but given the small numbers of rects
we're typically working with, it doesn't really matter. May need to revisit
this in the future if we find ourselves with a huge number of rects.
 2019-02-19 14:49:23 +01:00
Andreas Kling
9b71307d49 WindowServer: Support windows with alpha channels. And per-WSWindow opacity. 
This patch also adds a Format concept to GraphicsBitmap. For now there are
only two formats: RGB32 and RGBA32. Windows with alpha channel have their
backing stores created in the RGBA32 format.

Use this to make Terminal windows semi-transparent for that comfy rice look.
There is one problem here, in that window compositing overdraw incurs
multiple passes of blending of the same pixels. This leads to a mismatch in
opacity which is obviously not good. I will work on this in a later patch.

The alpha blending is currently straight C++. It should be relatively easy
to optimize this using SSE instructions.

For now I'm just happy with the cute effect. :^)
 2019-02-19 01:42:53 +01:00