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vidconsole: Avoid kerning against an unrelated character

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When the cursor position changes, kerning should not be used for the
next character, since it can make the first displayed character shuffle
left or right a bit.

Clear the kern character when setting the position.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2025-04-02 06:29:44 +13:00
committed by Tom Rini
parent f94f1f4b8c
commit 7703cfe025
2 changed files with 5 additions and 0 deletions
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2
drivers/video/console_truetype.c
View File

@@ -490,10 +490,12 @@ static int console_truetype_backspace(struct udevice *dev)
static int console_truetype_entry_start(struct udevice *dev)
{
struct vidconsole_priv *vc_priv = dev_get_uclass_priv(dev);
struct console_tt_priv *priv = dev_get_priv(dev);
/* A new input line has start, so clear our history */
priv->pos_ptr = 0;
vc_priv->last_ch = 0;
return 0;
}

3
drivers/video/vidconsole-uclass.c
View File

@@ -127,6 +127,9 @@ void vidconsole_set_cursor_pos(struct udevice *dev, int x, int y)
priv->xcur_frac = VID_TO_POS(x);
priv->xstart_frac = priv->xcur_frac;
priv->ycur = y;
/* make sure not to kern against the previous character */
priv->last_ch = 0;
vidconsole_entry_start(dev);
}