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gterm: Center terminal grid inside terminal window

This commit is contained in:
mintsuki 2021-10-12 20:52:10 +02:00
parent cb55eef436
commit 0f7746c321
1 changed files with 10 additions and 4 deletions
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14
stage23/lib/gterm.c
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@ -275,8 +275,11 @@ static void plot_char(struct gterm_char *c, size_t x, size_t y) {
return;
}
x = margin + x * glyph_width;
y = margin + y * glyph_height;
size_t offset_x = margin + ((gterm_width - margin * 2) % glyph_width) / 2;
size_t offset_y = margin + ((gterm_height - margin * 2) % glyph_height) / 2;
x = offset_x + x * glyph_width;
y = offset_y + y * glyph_height;
bool *glyph = &vga_font_bool[c->c * vga_font_height * vga_font_width];
// naming: fx,fy for font coordinates, gx,gy for glyph coordinates
@ -297,8 +300,11 @@ static void plot_char(struct gterm_char *c, size_t x, size_t y) {
}
static size_t plot_from_queue(struct queue_item *qu, size_t max) {
size_t offset_x = margin + ((gterm_width - margin * 2) % glyph_width) / 2;
size_t offset_y = margin + ((gterm_height - margin * 2) % glyph_height) / 2;
for (size_t gy = 0; ; gy++) {
size_t y = margin + qu->y * glyph_height;
size_t y = offset_y + qu->y * glyph_height;
size_t fy = (gy / vga_font_scale_y) * vga_font_width;
volatile uint32_t *fb_line = gterm_framebuffer + (y + gy) * (gterm_pitch / 4);
uint32_t *canvas_line = bg_canvas + (y + gy) * gterm_width;
@ -316,7 +322,7 @@ static size_t plot_from_queue(struct queue_item *qu, size_t max) {
if (map[offset] == NULL) {
goto epilogue;
}
size_t x = margin + q->x * glyph_width;
size_t x = offset_x + q->x * glyph_width;
struct gterm_char *old = &grid[offset];
bool *new_glyph = &vga_font_bool[q->c.c * vga_font_height * vga_font_width];
bool *old_glyph = &vga_font_bool[old->c * vga_font_height * vga_font_width];