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feat!: refactor the input processor #25

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Merged
gdamore merged 3 commits into from
Dec 8, 2025
Merged

feat!: refactor the input processor #25

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8af203f
feat!: refactor the input processor
gdamore Dec 6, 2025
2d0b327
fix(demos): Fix incorrect RGB encoding in color demo (found by CodeRa…
gdamore Dec 7, 2025
712e16a
fix: mkinfo color calculation is incorrect (use of '<' instead of '<<')
gdamore Dec 7, 2025
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274 changes: 139 additions & 135 deletions demos/colors/source/colors.d
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
/**
* Color demo for dcell.
*
* Copyright: Copyright 2022 Garrett D'Amore
* Copyright: Copyright 2025 Garrett D'Amore
* Authors: Garrett D'Amore
* License:
* Distributed under the Boost Software License, Version 1.0.
Expand All @@ -19,154 +19,158 @@ import dcell;

class ColorBoxes
{
import std.random;
import std.random;

int r;
int g;
int b;
int ri;
int gi;
int bi;
Random rng;
enum inc = 8;
int cnt;
int r;
int g;
int b;
int ri;
int gi;
int bi;
Random rng;
enum inc = 8;
int cnt;

bool flip()
{
return (rng.uniform!ubyte() & 0x1) != 0;
}
bool flip()
{
return (rng.uniform!ubyte() & 0x1) != 0;
}

this()
{
rng = rndGen();
r = rng.uniform!ubyte();
g = rng.uniform!ubyte();
b = rng.uniform!ubyte();
ri = inc;
gi = inc / 4; // humans are very sensitive to green
bi = inc;
}
this()
{
rng = rndGen();
r = rng.uniform!ubyte();
g = rng.uniform!ubyte();
b = rng.uniform!ubyte();
ri = inc;
gi = inc / 4; // humans are very sensitive to green
bi = inc;
}

void makeBox(Screen s)
{
Coord wsz = s.size();
dchar dc = ' ';
Style style;
cnt++;
void makeBox(Screen s)
{
Coord wsz = s.size();
dchar dc = ' ';
Style style;
cnt++;

if (s.colors() == 0)
{
dchar[] glyphs = ['@', '#', '&', '*', '=', '%', 'Z', 'A'];
dc = choice(glyphs, rng);
if (flip())
style.attr |= Attr.reverse;
else
style.attr &= ~Attr.reverse;
}
else
{
r += ri;
g += gi;
b += bi;
if (r >= 256 || r < 0)
{
ri = -ri;
r += ri;
}
if (g >= 256 || g < 0)
{
gi = -gi;
g += gi;
}
if (b >= 256 || b < 0)
{
bi = -bi;
b += bi;
}
if (cnt % (256 / inc) == 0)
{
if (flip())
{
ri = -ri;
}
if (s.colors() == 0)
{
dchar[] glyphs = ['@', '#', '&', '*', '=', '%', 'Z', 'A'];
dc = choice(glyphs, rng);
if (flip())
style.attr |= Attr.reverse;
else
style.attr &= ~Attr.reverse;
}
else
{
r += ri;
g += gi;
b += bi;
if (r >= 256 || r < 0)
{
ri = -ri;
r += ri;
}
if (g >= 256 || g < 0)
{
gi = -gi;
g += gi;
}
if (b >= 256 || b < 0)
{
bi = -bi;
b += bi;
}
if (cnt % (256 / inc) == 0)
{
if (flip())
{
ri = -ri;
}

if (flip())
{
gi = -gi;
}
if (flip())
{
gi = -gi;
}

if (flip())
{
bi = -bi;
}
}
style.bg = fromHex(
int(r) << 15 | int(g) << 8 | int(b));
}
if (flip())
{
bi = -bi;
}
}
style.bg = fromHex(
int(r) << 16 | int(g) << 8 | int(b));
}

// half the width and half the height
Coord c1 = Coord(wsz.x / 4, wsz.y / 4);
Coord c2 = Coord(c1.x + wsz.x / 2, c1.y + wsz.y / 2);
Coord pos = c1;
Cell cell = Cell(dc, style);
for (pos.y = c1.y; pos.y <= c2.y; pos.y++)
{
for (pos.x = c1.x; pos.x <= c2.x; pos.x++)
{
s[pos] = cell;
}
}
s.show();
}
// half the width and half the height
Coord c1 = Coord(wsz.x / 4, wsz.y / 4);
Coord c2 = Coord(c1.x + wsz.x / 2, c1.y + wsz.y / 2);
Coord pos = c1;
Cell cell = Cell(dc, style);
for (pos.y = c1.y; pos.y <= c2.y; pos.y++)
{
for (pos.x = c1.x; pos.x <= c2.x; pos.x++)
{
s[pos] = cell;
}
}
s.show();
}
}

void main()
{
import std.stdio;
import core.time;
import core.stdc.stdlib;
import std.stdio;
import core.time;
import core.stdc.stdlib;

auto s = newScreen();
assert(s !is null);
ColorBoxes cb = new ColorBoxes();
auto s = newScreen();
assert(s !is null);
ColorBoxes cb = new ColorBoxes();

auto now = MonoTime.currTime();
auto now = MonoTime.currTime();

s.start();
bool done = false;
while (!done)
{
cb.makeBox(s);
auto ev = s.receiveEvent(msecs(50));
switch (ev.type)
{
case EventType.key:
switch (ev.key.key)
{
case Key.esc, Key.enter:
done = true;
break;
case Key.ctrlL:
s.resize();
s.sync();
break;
default:
s.start();
bool done = false;
while (!done)
{
cb.makeBox(s);
auto ev = s.receiveEvent(msecs(50));
switch (ev.type)
{
case EventType.key:
switch (ev.key.key)
{
case Key.esc, Key.enter:
done = true;
break;
case Key.rune:
// Ctrl-L (without other modifiers) used to force a redraw.
if (ev.key.ch == 'l' && ev.key.mod == Modifiers.ctrl)
{
s.resize();
s.sync();
}
break;
default:

}
break;
case EventType.resize:
s.resize();
break;
case EventType.closed:
done = true;
break;
case EventType.error:
assert(0, "errror received");
default:
}
}
auto end = MonoTime.currTime();
s.stop();
writefln("Drew %d boxes in %s.", cb.cnt, end - now);
writefln("Average per box %s.", (end - now) / cb.cnt);
}
break;
case EventType.resize:
s.resize();
break;
case EventType.closed:
done = true;
break;
case EventType.error:
assert(0, "error received");
default:
}
}
auto end = MonoTime.currTime();
s.stop();
writefln("Drew %d boxes in %s.", cb.cnt, end - now);
writefln("Average per box %s.", (end - now) / cb.cnt);
}
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