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feat(l1): Home pages slide sideways, the page pill glides along

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DisplayDriver gains slideBegin()/slideCompose(): the driver keeps the frame
on screen and, in the next one, moves it out while the new rows follow.
SH1106 does it on its 1 KB buffer (+1 KB RAM for the copy), the sim on its
canvas; drivers that can't read their frame back keep cutting over (e-ink).

Home slides the content below the page-icon row in 220 ms with an ease-out
(the whole screen to and from the header-less clock), and the current-page
pill glides between icons.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-10-01 23:08:40 +02:00
co-authored by Claude Opus 5.5
parent 608231ed6b
commit 061e5ba36b
5 changed files with 124 additions and 12 deletions
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src/helpers/ui/SH1106Display.cpp
+31
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@@ -1,4 +1,5 @@
#include "SH1106Display.h"
#include <string.h>
#include <Adafruit_GrayOLED.h>
#include "Adafruit_SH110X.h"
#include "MiscFixedRenderer.h"
@@ -64,6 +65,36 @@ void SH1106Display::startFrame(Color bkg)
display.cp437(true); // Use full 256 char 'Code Page 437' font
}
// The GFX buffer still holds the last frame sent until the next startFrame().
bool SH1106Display::slideBegin(int y0)
{
_slide_y0 = y0 < 0 ? 0 : (y0 > height() ? height() : y0);
memcpy(_slide_old, display.getBuffer(), sizeof(_slide_old));
return true;
}
// Buffer layout: one byte per column per 8-row page, bit n = row page*8+n.
void SH1106Display::slideCompose(int dx)
{
uint8_t* buf = display.getBuffer();
const int W = width();
int off = dx < 0 ? -dx : dx;
if (off > W) off = W;
uint8_t fresh[128];
for (int p = _slide_y0 / 8; p < height() / 8; p++) {
const uint8_t keep = (p == _slide_y0 / 8) ? (uint8_t)~(0xFF << (_slide_y0 & 7)) : 0;
uint8_t* cur = buf + p * W;
const uint8_t* old = _slide_old + p * W;
memcpy(fresh, cur, W);
for (int x = 0; x < W; x++) {
uint8_t v;
if (dx >= 0) v = x < W - off ? old[x + off] : fresh[x - (W - off)];
else v = x >= off ? old[x - off] : fresh[x + (W - off)];
cur[x] = (cur[x] & keep) | (v & ~keep);
}
}
}
void SH1106Display::setTextSize(int sz)
{
_text_sz = sz;