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sixel: calculate image height in (cell) rows

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Daniel Eklöf 2020-02-22 00:05:25 +01:00
parent 564e8909f4
commit 63140a68f5
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GPG key ID: 5BBD4992C116573F
4 changed files with 25 additions and 23 deletions
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43
render.c
View file

@ -520,30 +520,23 @@ grid_render_scroll_reverse(struct terminal *term, struct buffer *buf,
}
static void
render_sixel(struct terminal *term, pixman_image_t *pix, const struct sixel *sixel)
render_sixel(struct terminal *term, pixman_image_t *pix,
const struct sixel *sixel)
{
int view_end = (term->grid->view + term->rows - 1) & (term->grid->num_rows - 1);
int first_visible_row = -1;
if (view_end >= term->grid->view) {
/* Not wrapped */
for (size_t i = sixel->pos.row;
i < sixel->pos.row + (sixel->height + term->cell_height - 1) / term->cell_height;
i++)
{
int row = i & (term->grid->num_rows - 1);
for (size_t i = sixel->pos.row; i < sixel->pos.row + sixel->rows; i++) {
int row = i & (term->grid->num_rows - 1);
if (view_end >= term->grid->view) {
/* Not wrapped */
if (row >= term->grid->view && row <= view_end) {
first_visible_row = i;
break;
}
}
} else {
/* Wrapped */
for (size_t i = sixel->pos.row;
i < sixel->pos.row + (sixel->height + term->cell_height - 1) / term->cell_height;
i++)
{
int row = i & (term->grid->num_rows - 1);
} else {
/* Wrapped */
if (row >= term->grid->view || row <= view_end) {
first_visible_row = i;
break;
@ -554,20 +547,30 @@ render_sixel(struct terminal *term, pixman_image_t *pix, const struct sixel *six
if (first_visible_row < 0)
return;
/* First visible (0 based) row of the image */
const int first_img_row = first_visible_row - sixel->pos.row;
/* Map first visible line to current grid view */
const int row = first_visible_row & (term->grid->num_rows - 1);
const int view_aligned =
(row - term->grid->view + term->grid->num_rows) & (term->grid->num_rows - 1);
/* Translate row/column to x/y pixel values */
const int x = term->x_margin + sixel->pos.col * term->cell_width;
const int y = max(term->y_margin, term->y_margin + view_aligned * term->cell_height);
const int y = max(
term->y_margin, term->y_margin + view_aligned * term->cell_height);
/* Width/height, in pixels - and don't touch the window margins */
const int width = min(sixel->width, term->width - x - term->x_margin);
const int height = min(
sixel->height - first_img_row * term->cell_height,
term->height - y - term->y_margin);
//LOG_INFO("x=%d, y=%d, width=%d, height=%d", x, y, width, height);
/* Verify we're not stepping outside the grid */
assert(x >= term->x_margin);
assert(y >= term->y_margin);
assert(x + width <= term->width - term->x_margin);
assert(y + height <= term->height - term->y_margin);
pixman_image_composite(
PIXMAN_OP_SRC,
@ -579,9 +582,7 @@ render_sixel(struct terminal *term, pixman_image_t *pix, const struct sixel *six
x, y,
width, height);
wl_surface_damage_buffer(
term->window->surface,
x, y, width, height);
wl_surface_damage_buffer(term->window->surface, x, y, width, height);
}
static void

1
sixel.c
View file

@ -56,6 +56,7 @@ sixel_unhook(struct terminal *term)
.data = term->sixel.image,
.width = term->sixel.max_col,
.height = term->sixel.row * 6,
.rows = (term->sixel.row * 6 + term->cell_height - 1) / term->cell_height,
.pos = (struct coord){term->cursor.point.col, term->grid->offset + term->cursor.point.row},
};

3
terminal.c
View file

@ -1601,8 +1601,7 @@ term_scroll_reverse_partial(struct terminal *term,
/* TODO: untested */
int img_rows = (it->item.height + term->cell_height - 1) / term->cell_height;
int img_bottom_row = (it->item.pos.row + img_rows) & (term->grid->num_rows - 1);
int img_bottom_row = (it->item.pos.row + it->item.rows) & (term->grid->num_rows - 1);
int new_row = (term->grid->offset + r) & (term->grid->num_rows - 1);
if (img_bottom_row == new_row) {

1
terminal.h
View file

@ -180,6 +180,7 @@ struct sixel {
pixman_image_t *pix;
int width;
int height;
int rows;
struct coord pos;
};