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Broken term scrolling

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xamidev
2026-01-10 14:43:51 +01:00
parent b469952d91
commit 091f94f89e
6 changed files with 26 additions and 23 deletions
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26
src/io/term/term.c
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@@ -23,6 +23,8 @@ uint8_t* glyphs = _binary_zap_light16_psf_start + sizeof(PSF1_Header);
#define FONT_WIDTH 8
#define FONT_HEIGHT font->characterSize
// Character cursor
typedef struct
{
@@ -102,7 +104,7 @@ static void erase_char(size_t px, size_t py)
for (size_t y=0; y<FONT_HEIGHT; y++)
{
for (size_t x=0; x<FONT_HEIGHT; x++)
for (size_t x=0; x<FONT_WIDTH; x++)
{
// Black
putpixel(px+x, py+y, 0);
@@ -112,21 +114,15 @@ static void erase_char(size_t px, size_t py)
void term_scroll()
{
const size_t row_height = FONT_HEIGHT;
const size_t row_bytes = framebuffer->pitch;
const size_t screen_rows = framebuffer->height;
// Erase first text line
memset(fb, 255, FONT_HEIGHT*framebuffer->pitch);
// Move framebuffer up by one text row
//memmove(fb, fb + row_height * row_bytes, (screen_rows - row_height) * row_bytes);
// Move whole framebuffer up by one text line
memmove(fb, fb+(FONT_HEIGHT*framebuffer->pitch), (framebuffer->height-FONT_HEIGHT)*framebuffer->pitch);
for (size_t i = 0; i < (screen_rows - row_height) * row_bytes; i++)
{
fb[i] = fb[i + row_height * row_bytes];
}
// Clear last text row
size_t clear_start = (screen_rows - row_height) * row_bytes;
memset(fb + clear_start, 0, row_height * row_bytes);
// Clear last text line
size_t clear_start = (framebuffer->height - FONT_HEIGHT) * framebuffer->pitch;
memset(fb + clear_start, 255, FONT_HEIGHT * framebuffer->pitch);
// Shift line lengths by 1 (for backspace handling)
size_t max_lines = term_max_lines();
@@ -134,11 +130,9 @@ void term_scroll()
{
lines_length[i - 1] = lines_length[i];
}
lines_length[max_lines - 1] = 0;
}
void putchar(char c)
{
const size_t max_cols = term_max_cols();