mirror of
https://codeberg.org/dnkl/foot.git
synced 2026-02-04 04:06:06 -05:00
4aa67e464a
When erasing a sixel, the cells underneath it must be marked as 'dirty', in order to be re-rendered. This was not being done correctly; the for loop loops *from* the start col, meaning the *end* col is *not* sixel->pos.col, as that's the *number* of columns, not the *end* column.
1940 lines
59 KiB
C
1940 lines
59 KiB
C
#include "sixel.h"
|
||
|
||
#include <string.h>
|
||
#include <limits.h>
|
||
|
||
#define LOG_MODULE "sixel"
|
||
#define LOG_ENABLE_DBG 0
|
||
#include "log.h"
|
||
#include "debug.h"
|
||
#include "grid.h"
|
||
#include "hsl.h"
|
||
#include "render.h"
|
||
#include "util.h"
|
||
#include "xmalloc.h"
|
||
#include "xsnprintf.h"
|
||
|
||
static size_t count;
|
||
|
||
static void sixel_put_generic(struct terminal *term, uint8_t c);
|
||
static void sixel_put_ar_11(struct terminal *term, uint8_t c);
|
||
|
||
void
|
||
sixel_fini(struct terminal *term)
|
||
{
|
||
free(term->sixel.image.data);
|
||
free(term->sixel.private_palette);
|
||
free(term->sixel.shared_palette);
|
||
}
|
||
|
||
sixel_put
|
||
sixel_init(struct terminal *term, int p1, int p2, int p3)
|
||
{
|
||
/*
|
||
* P1: pixel aspect ratio - unimplemented
|
||
* P2: background color mode
|
||
* - 0|2: empty pixels use current background color
|
||
* - 1: empty pixels remain at their current color (i.e. transparent)
|
||
* P3: horizontal grid size - ignored
|
||
*/
|
||
|
||
xassert(term->sixel.image.data == NULL);
|
||
xassert(term->sixel.palette_size <= SIXEL_MAX_COLORS);
|
||
|
||
/* Default aspect ratio is 2:1 */
|
||
const int pad = 1;
|
||
const int pan =
|
||
(p1 == 2) ? 5 :
|
||
(p1 == 3 || p1 == 4) ? 3 :
|
||
(p1 == 7 || p1 == 8 || p1 == 9) ? 1 : 2;
|
||
|
||
LOG_DBG("initializing sixel with "
|
||
"p1=%d (pan=%d, pad=%d, aspect-ratio=%d:%d), "
|
||
"p2=%d (transparent=%s), "
|
||
"p3=%d (ignored)",
|
||
p1, pan, pad, pan, pad, p2, p2 == 1 ? "yes" : "no", p3);
|
||
|
||
term->sixel.state = SIXEL_DECSIXEL;
|
||
term->sixel.pos = (struct coord){0, 0};
|
||
term->sixel.row_byte_ofs = 0;
|
||
term->sixel.color_idx = 0;
|
||
term->sixel.pan = pan;
|
||
term->sixel.pad = pad;
|
||
term->sixel.param = 0;
|
||
term->sixel.param_idx = 0;
|
||
memset(term->sixel.params, 0, sizeof(term->sixel.params));
|
||
term->sixel.transparent_bg = p2 == 1;
|
||
term->sixel.image.data = NULL;
|
||
term->sixel.image.width = 0;
|
||
term->sixel.image.height = 0;
|
||
|
||
/* TODO: default palette */
|
||
|
||
if (term->sixel.use_private_palette) {
|
||
xassert(term->sixel.private_palette == NULL);
|
||
term->sixel.private_palette = xcalloc(
|
||
term->sixel.palette_size, sizeof(term->sixel.private_palette[0]));
|
||
term->sixel.palette = term->sixel.private_palette;
|
||
} else {
|
||
if (term->sixel.shared_palette == NULL) {
|
||
term->sixel.shared_palette = xcalloc(
|
||
term->sixel.palette_size, sizeof(term->sixel.shared_palette[0]));
|
||
} else {
|
||
/* Shared palette - do *not* reset palette for new sixels */
|
||
}
|
||
|
||
term->sixel.palette = term->sixel.shared_palette;
|
||
}
|
||
|
||
uint32_t bg = 0;
|
||
|
||
switch (term->vt.attrs.bg_src) {
|
||
case COLOR_RGB:
|
||
bg = 0xffu << 24 | term->vt.attrs.bg;
|
||
break;
|
||
|
||
case COLOR_BASE16:
|
||
case COLOR_BASE256:
|
||
bg = 0xffu << 24 | term->colors.table[term->vt.attrs.bg];
|
||
break;
|
||
|
||
case COLOR_DEFAULT:
|
||
if (term->colors.alpha == 0xffff)
|
||
bg = 0xffu << 24 | term->colors.bg;
|
||
else {
|
||
/* Alpha needs to be pre-multiplied */
|
||
uint32_t r = (term->colors.bg >> 16) & 0xff;
|
||
uint32_t g = (term->colors.bg >> 8) & 0xff;
|
||
uint32_t b = (term->colors.bg >> 0) & 0xff;
|
||
|
||
uint32_t alpha = term->colors.alpha;
|
||
r *= alpha; r /= 0xffff;
|
||
g *= alpha; g /= 0xffff;
|
||
b *= alpha; b /= 0xffff;
|
||
|
||
bg = (alpha >> 8) << 24 | (r & 0xff) << 16 | (g & 0xff) << 8 | (b & 0xff);
|
||
}
|
||
break;
|
||
}
|
||
|
||
term->sixel.default_bg = term->sixel.transparent_bg
|
||
? 0x00000000u
|
||
: bg;
|
||
|
||
count = 0;
|
||
return pan == 1 && pad == 1 ? &sixel_put_ar_11 : &sixel_put_generic;
|
||
}
|
||
|
||
static void
|
||
sixel_invalidate_cache(struct sixel *sixel)
|
||
{
|
||
if (sixel->scaled.pix != NULL)
|
||
pixman_image_unref(sixel->scaled.pix);
|
||
|
||
free(sixel->scaled.data);
|
||
sixel->scaled.pix = NULL;
|
||
sixel->scaled.data = NULL;
|
||
sixel->scaled.width = -1;
|
||
sixel->scaled.height = -1;
|
||
|
||
sixel->pix = NULL;
|
||
sixel->width = -1;
|
||
sixel->height = -1;
|
||
}
|
||
|
||
void
|
||
sixel_destroy(struct sixel *sixel)
|
||
{
|
||
sixel_invalidate_cache(sixel);
|
||
|
||
if (sixel->original.pix != NULL)
|
||
pixman_image_unref(sixel->original.pix);
|
||
|
||
free(sixel->original.data);
|
||
sixel->original.pix = NULL;
|
||
sixel->original.data = NULL;
|
||
}
|
||
|
||
void
|
||
sixel_destroy_all(struct terminal *term)
|
||
{
|
||
tll_foreach(term->normal.sixel_images, it)
|
||
sixel_destroy(&it->item);
|
||
tll_foreach(term->alt.sixel_images, it)
|
||
sixel_destroy(&it->item);
|
||
tll_free(term->normal.sixel_images);
|
||
tll_free(term->alt.sixel_images);
|
||
}
|
||
|
||
static void
|
||
sixel_erase(struct terminal *term, struct sixel *sixel)
|
||
{
|
||
for (int i = 0; i < sixel->rows; i++) {
|
||
int r = (sixel->pos.row + i) & (term->grid->num_rows - 1);
|
||
|
||
struct row *row = term->grid->rows[r];
|
||
if (row == NULL) {
|
||
/* A resize/reflow may cause row to now be unallocated */
|
||
continue;
|
||
}
|
||
|
||
row->dirty = true;
|
||
|
||
for (int c = sixel->pos.col; c < min(sixel->pos.col + sixel->cols, term->cols); c++)
|
||
row->cells[c].attrs.clean = 0;
|
||
}
|
||
|
||
sixel_destroy(sixel);
|
||
}
|
||
|
||
/*
|
||
* Verify the sixels are sorted correctly.
|
||
*
|
||
* The sixels are sorted on their *end* row, in descending order. This
|
||
* invariant means the most recent sixels appear first in the list.
|
||
*/
|
||
static void
|
||
verify_list_order(const struct terminal *term)
|
||
{
|
||
#if defined(_DEBUG)
|
||
int prev_row = INT_MAX;
|
||
int prev_col = -1;
|
||
int prev_col_count = 0;
|
||
|
||
/* To aid debugging */
|
||
size_t UNUSED idx = 0;
|
||
|
||
tll_foreach(term->grid->sixel_images, it) {
|
||
int row = grid_row_abs_to_sb(
|
||
term->grid, term->rows, it->item.pos.row + it->item.rows - 1);
|
||
int col = it->item.pos.col;
|
||
int col_count = it->item.cols;
|
||
|
||
xassert(row <= prev_row);
|
||
|
||
if (row == prev_row) {
|
||
/* Allowed to be on the same row only if their columns
|
||
* don't overlap */
|
||
|
||
xassert(col + col_count <= prev_col ||
|
||
prev_col + prev_col_count <= col);
|
||
}
|
||
|
||
prev_row = row;
|
||
prev_col = col;
|
||
prev_col_count = col_count;
|
||
idx++;
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/*
|
||
* Verifies there aren't any sixels that cross the scrollback
|
||
* wrap-around. This invariant means a sixel's absolute row numbers
|
||
* are strictly increasing.
|
||
*/
|
||
static void
|
||
verify_no_wraparound_crossover(const struct terminal *term)
|
||
{
|
||
#if defined(_DEBUG)
|
||
tll_foreach(term->grid->sixel_images, it) {
|
||
const struct sixel *six = &it->item;
|
||
|
||
xassert(six->pos.row >= 0);
|
||
xassert(six->pos.row < term->grid->num_rows);
|
||
|
||
int end = (six->pos.row + six->rows - 1) & (term->grid->num_rows - 1);
|
||
xassert(end >= six->pos.row);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/*
|
||
* Verify there aren't any sixels that cross the scrollback end. This
|
||
* invariant means a sixel's rebased row numbers are strictly
|
||
* increasing.
|
||
*/
|
||
static void
|
||
verify_scrollback_consistency(const struct terminal *term)
|
||
{
|
||
#if defined(_DEBUG)
|
||
tll_foreach(term->grid->sixel_images, it) {
|
||
const struct sixel *six = &it->item;
|
||
|
||
int last_row = -1;
|
||
for (int i = 0; i < six->rows; i++) {
|
||
int row_no = grid_row_abs_to_sb(
|
||
term->grid, term->rows, six->pos.row + i);
|
||
|
||
if (last_row != -1)
|
||
xassert(last_row < row_no);
|
||
|
||
last_row = row_no;
|
||
}
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/*
|
||
* Verifies no sixel overlap with any other sixels.
|
||
*/
|
||
static void
|
||
verify_no_overlap(const struct terminal *term)
|
||
{
|
||
#if defined(_DEBUG)
|
||
tll_foreach(term->grid->sixel_images, it) {
|
||
const struct sixel *six1 = &it->item;
|
||
|
||
pixman_region32_t rect1;
|
||
pixman_region32_init_rect(
|
||
&rect1, six1->pos.col, six1->pos.row, six1->cols, six1->rows);
|
||
|
||
tll_foreach(term->grid->sixel_images, it2) {
|
||
const struct sixel *six2 = &it2->item;
|
||
|
||
if (six1 == six2)
|
||
continue;
|
||
|
||
pixman_region32_t rect2;
|
||
pixman_region32_init_rect(
|
||
&rect2, six2->pos.col,
|
||
six2->pos.row, six2->cols, six2->rows);
|
||
|
||
pixman_region32_t intersection;
|
||
pixman_region32_init(&intersection);
|
||
pixman_region32_intersect(&intersection, &rect1, &rect2);
|
||
|
||
xassert(!pixman_region32_not_empty(&intersection));
|
||
|
||
pixman_region32_fini(&intersection);
|
||
pixman_region32_fini(&rect2);
|
||
}
|
||
|
||
pixman_region32_fini(&rect1);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
verify_sixels(const struct terminal *term)
|
||
{
|
||
verify_no_wraparound_crossover(term);
|
||
verify_scrollback_consistency(term);
|
||
verify_no_overlap(term);
|
||
verify_list_order(term);
|
||
}
|
||
|
||
static void
|
||
sixel_insert(struct terminal *term, struct sixel sixel)
|
||
{
|
||
int end_row = grid_row_abs_to_sb(
|
||
term->grid, term->rows, sixel.pos.row + sixel.rows - 1);
|
||
|
||
tll_foreach(term->grid->sixel_images, it) {
|
||
int rebased = grid_row_abs_to_sb(
|
||
term->grid, term->rows, it->item.pos.row + it->item.rows - 1);
|
||
|
||
if (rebased < end_row) {
|
||
tll_insert_before(term->grid->sixel_images, it, sixel);
|
||
goto out;
|
||
}
|
||
}
|
||
|
||
tll_push_back(term->grid->sixel_images, sixel);
|
||
|
||
out:
|
||
#if defined(LOG_ENABLE_DBG) && LOG_ENABLE_DBG
|
||
LOG_DBG("sixel list after insertion:");
|
||
tll_foreach(term->grid->sixel_images, it) {
|
||
LOG_DBG(" rows=%d+%d", it->item.pos.row, it->item.rows);
|
||
}
|
||
#endif
|
||
verify_sixels(term);
|
||
}
|
||
|
||
void
|
||
sixel_scroll_up(struct terminal *term, int rows)
|
||
{
|
||
if (likely(tll_length(term->grid->sixel_images) == 0))
|
||
return;
|
||
|
||
tll_rforeach(term->grid->sixel_images, it) {
|
||
struct sixel *six = &it->item;
|
||
|
||
int six_start = grid_row_abs_to_sb(term->grid, term->rows, six->pos.row);
|
||
|
||
if (six_start < rows) {
|
||
sixel_erase(term, six);
|
||
tll_remove(term->grid->sixel_images, it);
|
||
} else {
|
||
/*
|
||
* Unfortunately, we cannot break here.
|
||
*
|
||
* The sixels are sorted on their *end* row. This means
|
||
* there may be a sixel with a top row that will be
|
||
* scrolled out *anywhere* in the list (think of a huuuuge
|
||
* sixel that covers the entire scrollback)
|
||
*/
|
||
//break;
|
||
}
|
||
}
|
||
|
||
term_update_ascii_printer(term);
|
||
verify_sixels(term);
|
||
}
|
||
|
||
void
|
||
sixel_scroll_down(struct terminal *term, int rows)
|
||
{
|
||
if (likely(tll_length(term->grid->sixel_images) == 0))
|
||
return;
|
||
|
||
xassert(term->grid->num_rows >= rows);
|
||
|
||
tll_foreach(term->grid->sixel_images, it) {
|
||
struct sixel *six = &it->item;
|
||
|
||
int six_end = grid_row_abs_to_sb(
|
||
term->grid, term->rows, six->pos.row + six->rows - 1);
|
||
if (six_end >= term->grid->num_rows - rows) {
|
||
sixel_erase(term, six);
|
||
tll_remove(term->grid->sixel_images, it);
|
||
} else
|
||
break;
|
||
}
|
||
|
||
term_update_ascii_printer(term);
|
||
verify_sixels(term);
|
||
}
|
||
|
||
static void
|
||
blend_new_image_over_old(const struct terminal *term,
|
||
const struct sixel *six, pixman_region32_t *six_rect,
|
||
int row, int col, pixman_image_t **pix, bool *opaque)
|
||
{
|
||
xassert(pix != NULL);
|
||
xassert(opaque != NULL);
|
||
|
||
/*
|
||
* TODO: handle images being emitted with different cell dimensions
|
||
*/
|
||
|
||
const int six_ofs_x = six->pos.col * six->cell_width;
|
||
const int six_ofs_y = six->pos.row * six->cell_height;
|
||
const int img_ofs_x = col * six->cell_width;
|
||
const int img_ofs_y = row * six->cell_height;
|
||
const int img_width = pixman_image_get_width(*pix);
|
||
const int img_height = pixman_image_get_height(*pix);
|
||
|
||
pixman_region32_t pix_rect;
|
||
pixman_region32_init_rect(
|
||
&pix_rect, img_ofs_x, img_ofs_y, img_width, img_height);
|
||
|
||
/* Blend the intersection between the old and new images */
|
||
pixman_region32_t intersection;
|
||
pixman_region32_init(&intersection);
|
||
pixman_region32_intersect(&intersection, six_rect, &pix_rect);
|
||
|
||
int n_rects = -1;
|
||
pixman_box32_t *boxes = pixman_region32_rectangles(
|
||
&intersection, &n_rects);
|
||
|
||
if (n_rects == 0)
|
||
goto out;
|
||
|
||
xassert(n_rects == 1);
|
||
pixman_box32_t *box = &boxes[0];
|
||
|
||
if (!*opaque) {
|
||
/*
|
||
* New image is transparent - blend on top of the old
|
||
* sixel image.
|
||
*/
|
||
pixman_image_composite32(
|
||
PIXMAN_OP_OVER_REVERSE,
|
||
six->original.pix, NULL, *pix,
|
||
box->x1 - six_ofs_x, box->y1 - six_ofs_y,
|
||
0, 0,
|
||
box->x1 - img_ofs_x, box->y1 - img_ofs_y,
|
||
box->x2 - box->x1, box->y2 - box->y1);
|
||
}
|
||
|
||
/*
|
||
* Since the old image is split into sub-tiles on a
|
||
* per-row basis, we need to enlarge the new image and
|
||
* copy the old image if the old image extends beyond the
|
||
* new image.
|
||
*
|
||
* The "bounding" coordinates are either the edges of the
|
||
* old image, or the next cell boundary, whichever comes
|
||
* first.
|
||
*/
|
||
int bounding_x = six_ofs_x + six->original.width > img_ofs_x + img_width
|
||
? min(
|
||
six_ofs_x + six->original.width,
|
||
(box->x2 + six->cell_width - 1) / six->cell_width * six->cell_width)
|
||
: box->x2;
|
||
int bounding_y = six_ofs_y + six->original.height > img_ofs_y + img_height
|
||
? min(
|
||
six_ofs_y + six->original.height,
|
||
(box->y2 + six->cell_height - 1) / six->cell_height * six->cell_height)
|
||
: box->y2;
|
||
|
||
/* The required size of the new image */
|
||
const int required_width = bounding_x - img_ofs_x;
|
||
const int required_height = bounding_y - img_ofs_y;
|
||
|
||
const int new_width = max(img_width, required_width);
|
||
const int new_height = max(img_height, required_height);
|
||
|
||
if (new_width <= img_width && new_height <= img_height)
|
||
goto out;
|
||
|
||
//LOG_INFO("enlarging: %dx%d -> %dx%d", img_width, img_height, new_width, new_height);
|
||
|
||
if (!six->opaque) {
|
||
/* Transparency is viral */
|
||
*opaque = false;
|
||
}
|
||
|
||
/* Create a new pixmap */
|
||
int stride = new_width * sizeof(uint32_t);
|
||
uint32_t *new_data = xmalloc(stride * new_height);
|
||
pixman_image_t *pix2 = pixman_image_create_bits_no_clear(
|
||
PIXMAN_a8r8g8b8, new_width, new_height, new_data, stride);
|
||
|
||
#if defined(_DEBUG)
|
||
/* Fill new image with an easy-to-recognize color (green) */
|
||
for (size_t i = 0; i < new_width * new_height; i++)
|
||
new_data[i] = 0xff00ff00;
|
||
#endif
|
||
|
||
/* Copy the new image, from its old pixmap, to the new pixmap */
|
||
pixman_image_composite32(
|
||
PIXMAN_OP_SRC,
|
||
*pix, NULL, pix2, 0, 0, 0, 0, 0, 0, img_width, img_height);
|
||
|
||
/* Copy the bottom tile of the old sixel image into the new pixmap */
|
||
pixman_image_composite32(
|
||
PIXMAN_OP_SRC,
|
||
six->original.pix, NULL, pix2,
|
||
box->x1 - six_ofs_x, box->y2 - six_ofs_y,
|
||
0, 0,
|
||
box->x1 - img_ofs_x, box->y2 - img_ofs_y,
|
||
bounding_x - box->x1, bounding_y - box->y2);
|
||
|
||
/* Copy the right tile of the old sixel image into the new pixmap */
|
||
pixman_image_composite32(
|
||
PIXMAN_OP_SRC,
|
||
six->original.pix, NULL, pix2,
|
||
box->x2 - six_ofs_x, box->y1 - six_ofs_y,
|
||
0, 0,
|
||
box->x2 - img_ofs_x, box->y1 - img_ofs_y,
|
||
bounding_x - box->x2, bounding_y - box->y1);
|
||
|
||
/*
|
||
* Ensure the newly allocated area is initialized.
|
||
*
|
||
* Some of it, or all, will have been initialized above, by the
|
||
* bottom and right tiles from the old sixel image. However, there
|
||
* may be areas in the new image that isn't covered by the old
|
||
* image. These areas need to be made transparent.
|
||
*/
|
||
pixman_region32_t uninitialized;
|
||
pixman_region32_init_rects(
|
||
&uninitialized,
|
||
(const pixman_box32_t []){
|
||
/* Extended image area on the right side */
|
||
{img_ofs_x + img_width, img_ofs_y, img_ofs_x + new_width, img_ofs_y + new_height},
|
||
|
||
/* Bottom */
|
||
{img_ofs_x, img_ofs_y + img_height, img_ofs_x + new_width, img_ofs_y + new_height}},
|
||
2);
|
||
|
||
/* Subtract the old sixel image, since the area(s) covered by the
|
||
* old image has already been copied, and *must* not be
|
||
* overwritten */
|
||
pixman_region32_t diff;
|
||
pixman_region32_init(&diff);
|
||
pixman_region32_subtract(&diff, &uninitialized, six_rect);
|
||
|
||
if (pixman_region32_not_empty(&diff)) {
|
||
pixman_image_t *src =
|
||
pixman_image_create_solid_fill(&(pixman_color_t){0});
|
||
|
||
int count = -1;
|
||
pixman_box32_t *rects = pixman_region32_rectangles(&diff, &count);
|
||
|
||
for (int i = 0; i < count; i++) {
|
||
pixman_image_composite32(
|
||
PIXMAN_OP_SRC,
|
||
src, NULL, pix2,
|
||
0, 0, 0, 0,
|
||
rects[i].x1 - img_ofs_x, rects[i].y1 - img_ofs_y,
|
||
rects[i].x2 - rects[i].x1,
|
||
rects[i].y2 - rects[i].y1);
|
||
}
|
||
|
||
pixman_image_unref(src);
|
||
*opaque = false;
|
||
}
|
||
|
||
pixman_region32_fini(&diff);
|
||
pixman_region32_fini(&uninitialized);
|
||
|
||
/* Use the new pixmap in place of the old one */
|
||
free(pixman_image_get_data(*pix));
|
||
pixman_image_unref(*pix);
|
||
*pix = pix2;
|
||
|
||
out:
|
||
pixman_region32_fini(&intersection);
|
||
pixman_region32_fini(&pix_rect);
|
||
}
|
||
|
||
static void
|
||
sixel_overwrite(struct terminal *term, struct sixel *six,
|
||
int row, int col, int height, int width,
|
||
pixman_image_t **pix, bool *opaque)
|
||
{
|
||
pixman_region32_t six_rect;
|
||
pixman_region32_init_rect(
|
||
&six_rect,
|
||
six->pos.col * six->cell_width, six->pos.row * six->cell_height,
|
||
six->original.width, six->original.height);
|
||
|
||
pixman_region32_t overwrite_rect;
|
||
pixman_region32_init_rect(
|
||
&overwrite_rect,
|
||
col * six->cell_width, row * six->cell_height,
|
||
width * six->cell_width, height * six->cell_height);
|
||
|
||
#if defined(_DEBUG)
|
||
pixman_region32_t cell_intersection;
|
||
pixman_region32_init(&cell_intersection);
|
||
pixman_region32_intersect(&cell_intersection, &six_rect, &overwrite_rect);
|
||
xassert(pixman_region32_not_empty(&cell_intersection));
|
||
pixman_region32_fini(&cell_intersection);
|
||
#endif
|
||
|
||
if (pix != NULL)
|
||
blend_new_image_over_old(term, six, &six_rect, row, col, pix, opaque);
|
||
|
||
pixman_region32_t diff;
|
||
pixman_region32_init(&diff);
|
||
pixman_region32_subtract(&diff, &six_rect, &overwrite_rect);
|
||
|
||
pixman_region32_fini(&six_rect);
|
||
pixman_region32_fini(&overwrite_rect);
|
||
|
||
int n_rects = -1;
|
||
pixman_box32_t *boxes = pixman_region32_rectangles(&diff, &n_rects);
|
||
|
||
for (int i = 0; i < n_rects; i++) {
|
||
LOG_DBG("box #%d: x1=%d, y1=%d, x2=%d, y2=%d", i,
|
||
boxes[i].x1, boxes[i].y1, boxes[i].x2, boxes[i].y2);
|
||
|
||
xassert(boxes[i].x1 % six->cell_width == 0);
|
||
xassert(boxes[i].y1 % six->cell_height == 0);
|
||
|
||
/* New image's position, in cells */
|
||
const int new_col = boxes[i].x1 / six->cell_width;
|
||
const int new_row = boxes[i].y1 / six->cell_height;
|
||
|
||
xassert(new_row < term->grid->num_rows);
|
||
|
||
/* New image's width and height, in pixels */
|
||
const int new_width = boxes[i].x2 - boxes[i].x1;
|
||
const int new_height = boxes[i].y2 - boxes[i].y1;
|
||
|
||
uint32_t *new_data = xmalloc(new_width * new_height * sizeof(uint32_t));
|
||
const uint32_t *old_data = six->original.data;
|
||
|
||
/* Pixel offsets into old image backing memory */
|
||
const int x_ofs = boxes[i].x1 - six->pos.col * six->cell_width;
|
||
const int y_ofs = boxes[i].y1 - six->pos.row * six->cell_height;
|
||
|
||
/* Copy image data, one row at a time */
|
||
for (size_t j = 0; j < new_height; j++) {
|
||
memcpy(
|
||
&new_data[(0 + j) * new_width],
|
||
&old_data[(y_ofs + j) * six->original.width + x_ofs],
|
||
new_width * sizeof(uint32_t));
|
||
}
|
||
|
||
pixman_image_t *new_pix = pixman_image_create_bits_no_clear(
|
||
PIXMAN_a8r8g8b8,
|
||
new_width, new_height, new_data, new_width * sizeof(uint32_t));
|
||
|
||
struct sixel new_six = {
|
||
.pix = NULL,
|
||
.width = -1,
|
||
.height = -1,
|
||
.pos = {.col = new_col, .row = new_row},
|
||
.cols = (new_width + six->cell_width - 1) / six->cell_width,
|
||
.rows = (new_height + six->cell_height - 1) / six->cell_height,
|
||
.opaque = six->opaque,
|
||
.cell_width = six->cell_width,
|
||
.cell_height = six->cell_height,
|
||
.original = {
|
||
.data = new_data,
|
||
.pix = new_pix,
|
||
.width = new_width,
|
||
.height = new_height,
|
||
},
|
||
.scaled = {
|
||
.data = NULL,
|
||
.pix = NULL,
|
||
.width = -1,
|
||
.height = -1,
|
||
},
|
||
};
|
||
|
||
#if defined(_DEBUG)
|
||
/* Assert we don't cross the scrollback wrap-around */
|
||
const int new_end = new_six.pos.row + new_six.rows - 1;
|
||
xassert(new_end < term->grid->num_rows);
|
||
#endif
|
||
|
||
sixel_insert(term, new_six);
|
||
}
|
||
|
||
pixman_region32_fini(&diff);
|
||
}
|
||
|
||
/* Row numbers are absolute */
|
||
static void
|
||
_sixel_overwrite_by_rectangle(
|
||
struct terminal *term, int row, int col, int height, int width,
|
||
pixman_image_t **pix, bool *opaque)
|
||
{
|
||
verify_sixels(term);
|
||
|
||
#if defined(_DEBUG)
|
||
pixman_region32_t overwrite_rect;
|
||
pixman_region32_init_rect(&overwrite_rect, col, row, width, height);
|
||
#endif
|
||
|
||
const int start = row;
|
||
const int end = row + height - 1;
|
||
|
||
/* We should never generate scrollback wrapping sixels */
|
||
xassert(end < term->grid->num_rows);
|
||
|
||
const int scrollback_rel_start = grid_row_abs_to_sb(
|
||
term->grid, term->rows, start);
|
||
|
||
bool UNUSED would_have_breaked = false;
|
||
|
||
tll_foreach(term->grid->sixel_images, it) {
|
||
struct sixel *six = &it->item;
|
||
|
||
const int six_start = six->pos.row;
|
||
const int six_end = (six_start + six->rows - 1);
|
||
const int six_scrollback_rel_end =
|
||
grid_row_abs_to_sb(term->grid, term->rows, six_end);
|
||
|
||
/* We should never generate scrollback wrapping sixels */
|
||
xassert(six_end < term->grid->num_rows);
|
||
|
||
if (six_scrollback_rel_end < scrollback_rel_start) {
|
||
/* All remaining sixels are *before* our rectangle */
|
||
would_have_breaked = true;
|
||
break;
|
||
}
|
||
|
||
#if defined(_DEBUG)
|
||
pixman_region32_t six_rect;
|
||
pixman_region32_init_rect(&six_rect, six->pos.col, six->pos.row, six->cols, six->rows);
|
||
|
||
pixman_region32_t intersection;
|
||
pixman_region32_init(&intersection);
|
||
pixman_region32_intersect(&intersection, &six_rect, &overwrite_rect);
|
||
|
||
const bool collides = pixman_region32_not_empty(&intersection);
|
||
#else
|
||
const bool UNUSED collides = false;
|
||
#endif
|
||
|
||
if ((start <= six_start && end >= six_start) || /* Crosses sixel start boundary */
|
||
(start <= six_end && end >= six_end) || /* Crosses sixel end boundary */
|
||
(start >= six_start && end <= six_end)) /* Fully within sixel range */
|
||
{
|
||
const int col_start = six->pos.col;
|
||
const int col_end = six->pos.col + six->cols - 1;
|
||
|
||
if ((col <= col_start && col + width - 1 >= col_start) ||
|
||
(col <= col_end && col + width - 1 >= col_end) ||
|
||
(col >= col_start && col + width - 1 <= col_end))
|
||
{
|
||
xassert(!would_have_breaked);
|
||
|
||
struct sixel to_be_erased = *six;
|
||
tll_remove(term->grid->sixel_images, it);
|
||
|
||
sixel_overwrite(term, &to_be_erased, start, col, height, width,
|
||
pix, opaque);
|
||
sixel_erase(term, &to_be_erased);
|
||
} else
|
||
xassert(!collides);
|
||
} else
|
||
xassert(!collides);
|
||
|
||
#if defined(_DEBUG)
|
||
pixman_region32_fini(&intersection);
|
||
pixman_region32_fini(&six_rect);
|
||
#endif
|
||
}
|
||
|
||
#if defined(_DEBUG)
|
||
pixman_region32_fini(&overwrite_rect);
|
||
#endif
|
||
}
|
||
|
||
void
|
||
sixel_overwrite_by_rectangle(
|
||
struct terminal *term, int row, int col, int height, int width)
|
||
{
|
||
if (likely(tll_length(term->grid->sixel_images) == 0))
|
||
return;
|
||
|
||
const int start = (term->grid->offset + row) & (term->grid->num_rows - 1);
|
||
const int end = (start + height - 1) & (term->grid->num_rows - 1);
|
||
const bool wraps = end < start;
|
||
|
||
if (wraps) {
|
||
int rows_to_wrap_around = term->grid->num_rows - start;
|
||
xassert(height - rows_to_wrap_around > 0);
|
||
_sixel_overwrite_by_rectangle(term, start, col, rows_to_wrap_around, width, NULL, NULL);
|
||
_sixel_overwrite_by_rectangle(term, 0, col, height - rows_to_wrap_around, width, NULL, NULL);
|
||
} else
|
||
_sixel_overwrite_by_rectangle(term, start, col, height, width, NULL, NULL);
|
||
|
||
term_update_ascii_printer(term);
|
||
}
|
||
|
||
/* Row numbers are relative to grid offset */
|
||
void
|
||
sixel_overwrite_by_row(struct terminal *term, int _row, int col, int width)
|
||
{
|
||
xassert(col >= 0);
|
||
|
||
xassert(_row >= 0);
|
||
xassert(_row < term->rows);
|
||
xassert(col >= 0);
|
||
xassert(col < term->grid->num_cols);
|
||
|
||
if (likely(tll_length(term->grid->sixel_images) == 0))
|
||
return;
|
||
|
||
if (col + width > term->grid->num_cols)
|
||
width = term->grid->num_cols - col;
|
||
|
||
const int row = (term->grid->offset + _row) & (term->grid->num_rows - 1);
|
||
const int scrollback_rel_row = grid_row_abs_to_sb(term->grid, term->rows, row);
|
||
|
||
tll_foreach(term->grid->sixel_images, it) {
|
||
struct sixel *six = &it->item;
|
||
const int six_start = six->pos.row;
|
||
const int six_end = (six_start + six->rows - 1) & (term->grid->num_rows - 1);
|
||
|
||
/* We should never generate scrollback wrapping sixels */
|
||
xassert(six_end >= six_start);
|
||
|
||
const int six_scrollback_rel_end =
|
||
grid_row_abs_to_sb(term->grid, term->rows, six_end);
|
||
|
||
if (six_scrollback_rel_end < scrollback_rel_row) {
|
||
/* All remaining sixels are *before* "our" row */
|
||
break;
|
||
}
|
||
|
||
if (row >= six_start && row <= six_end) {
|
||
const int col_start = six->pos.col;
|
||
const int col_end = six->pos.col + six->cols - 1;
|
||
|
||
if ((col <= col_start && col + width - 1 >= col_start) ||
|
||
(col <= col_end && col + width - 1 >= col_end) ||
|
||
(col >= col_start && col + width - 1 <= col_end))
|
||
{
|
||
struct sixel to_be_erased = *six;
|
||
tll_remove(term->grid->sixel_images, it);
|
||
|
||
sixel_overwrite(term, &to_be_erased, row, col, 1, width, NULL, NULL);
|
||
sixel_erase(term, &to_be_erased);
|
||
}
|
||
}
|
||
}
|
||
|
||
term_update_ascii_printer(term);
|
||
}
|
||
|
||
void
|
||
sixel_overwrite_at_cursor(struct terminal *term, int width)
|
||
{
|
||
if (likely(tll_length(term->grid->sixel_images) == 0))
|
||
return;
|
||
|
||
sixel_overwrite_by_row(
|
||
term, term->grid->cursor.point.row, term->grid->cursor.point.col, width);
|
||
}
|
||
|
||
void
|
||
sixel_cell_size_changed(struct terminal *term)
|
||
{
|
||
tll_foreach(term->normal.sixel_images, it)
|
||
sixel_invalidate_cache(&it->item);
|
||
|
||
tll_foreach(term->alt.sixel_images, it)
|
||
sixel_invalidate_cache(&it->item);
|
||
}
|
||
|
||
void
|
||
sixel_sync_cache(const struct terminal *term, struct sixel *six)
|
||
{
|
||
if (six->pix != NULL) {
|
||
#if defined(_DEBUG)
|
||
if (six->cell_width == term->cell_width &&
|
||
six->cell_height == term->cell_height)
|
||
{
|
||
xassert(six->pix == six->original.pix);
|
||
xassert(six->width == six->original.width);
|
||
xassert(six->height == six->original.height);
|
||
|
||
xassert(six->scaled.data == NULL);
|
||
xassert(six->scaled.pix == NULL);
|
||
xassert(six->scaled.width < 0);
|
||
xassert(six->scaled.height < 0);
|
||
} else {
|
||
xassert(six->pix == six->scaled.pix);
|
||
xassert(six->width == six->scaled.width);
|
||
xassert(six->height == six->scaled.height);
|
||
|
||
xassert(six->scaled.data != NULL);
|
||
xassert(six->scaled.pix != NULL);
|
||
|
||
/* TODO: check ratio */
|
||
xassert(six->scaled.width >= 0);
|
||
xassert(six->scaled.height >= 0);
|
||
}
|
||
#endif
|
||
return;
|
||
}
|
||
|
||
/* Cache should be invalid */
|
||
xassert(six->scaled.data == NULL);
|
||
xassert(six->scaled.pix == NULL);
|
||
xassert(six->scaled.width < 0);
|
||
xassert(six->scaled.height < 0);
|
||
|
||
if (six->cell_width == term->cell_width &&
|
||
six->cell_height == term->cell_height)
|
||
{
|
||
six->pix = six->original.pix;
|
||
six->width = six->original.width;
|
||
six->height = six->original.height;
|
||
} else {
|
||
const double width_ratio = (double)term->cell_width / six->cell_width;
|
||
const double height_ratio = (double)term->cell_height / six->cell_height;
|
||
|
||
struct pixman_f_transform scale;
|
||
pixman_f_transform_init_scale(
|
||
&scale, 1. / width_ratio, 1. / height_ratio);
|
||
|
||
struct pixman_transform _scale;
|
||
pixman_transform_from_pixman_f_transform(&_scale, &scale);
|
||
pixman_image_set_transform(six->original.pix, &_scale);
|
||
pixman_image_set_filter(six->original.pix, PIXMAN_FILTER_BILINEAR, NULL, 0);
|
||
|
||
int scaled_width = (double)six->original.width * width_ratio;
|
||
int scaled_height = (double)six->original.height * height_ratio;
|
||
int scaled_stride = scaled_width * sizeof(uint32_t);
|
||
|
||
LOG_DBG("scaling sixel: %dx%d -> %dx%d",
|
||
six->original.width, six->original.height,
|
||
scaled_width, scaled_height);
|
||
|
||
uint8_t *scaled_data = xmalloc(scaled_height * scaled_stride);
|
||
pixman_image_t *scaled_pix = pixman_image_create_bits_no_clear(
|
||
PIXMAN_a8r8g8b8, scaled_width, scaled_height,
|
||
(uint32_t *)scaled_data, scaled_stride);
|
||
|
||
pixman_image_composite32(
|
||
PIXMAN_OP_SRC, six->original.pix, NULL, scaled_pix, 0, 0, 0, 0,
|
||
0, 0, scaled_width, scaled_height);
|
||
|
||
pixman_image_set_transform(six->original.pix, NULL);
|
||
|
||
six->scaled.data = scaled_data;
|
||
six->scaled.pix = six->pix = scaled_pix;
|
||
six->scaled.width = six->width = scaled_width;
|
||
six->scaled.height = six->height = scaled_height;
|
||
}
|
||
}
|
||
|
||
void
|
||
sixel_reflow_grid(struct terminal *term, struct grid *grid)
|
||
{
|
||
/* Meh - the sixel functions we call use term->grid... */
|
||
struct grid *active_grid = term->grid;
|
||
term->grid = grid;
|
||
|
||
/* Need the “real” list to be empty from the beginning */
|
||
tll(struct sixel) copy = tll_init();
|
||
tll_foreach(grid->sixel_images, it)
|
||
tll_push_back(copy, it->item);
|
||
tll_free(grid->sixel_images);
|
||
|
||
tll_rforeach(copy, it) {
|
||
struct sixel *six = &it->item;
|
||
int start = six->pos.row;
|
||
int end = (start + six->rows - 1) & (grid->num_rows - 1);
|
||
|
||
if (end < start) {
|
||
/* Crosses scrollback wrap-around */
|
||
/* TODO: split image */
|
||
sixel_destroy(six);
|
||
continue;
|
||
}
|
||
|
||
if (six->rows > grid->num_rows) {
|
||
/* Image too large */
|
||
/* TODO: keep bottom part? */
|
||
sixel_destroy(six);
|
||
continue;
|
||
}
|
||
|
||
/* Drop sixels that now cross the current scrollback end
|
||
* border. This is similar to a sixel that have been
|
||
* scrolled out */
|
||
/* TODO: should be possible to optimize this */
|
||
bool sixel_destroyed = false;
|
||
int last_row = -1;
|
||
|
||
for (int j = 0; j < six->rows; j++) {
|
||
int row_no = grid_row_abs_to_sb(
|
||
term->grid, term->rows, six->pos.row + j);
|
||
if (last_row != -1 && last_row >= row_no) {
|
||
sixel_destroy(six);
|
||
sixel_destroyed = true;
|
||
break;
|
||
}
|
||
|
||
last_row = row_no;
|
||
}
|
||
|
||
if (sixel_destroyed) {
|
||
LOG_WARN("destroyed sixel that now crossed history");
|
||
continue;
|
||
}
|
||
|
||
/* Sixels that didn’t overlap may now do so, which isn’t
|
||
* allowed of course */
|
||
_sixel_overwrite_by_rectangle(
|
||
term, six->pos.row, six->pos.col, six->rows, six->cols,
|
||
&it->item.original.pix, &it->item.opaque);
|
||
|
||
if (it->item.original.data != pixman_image_get_data(it->item.original.pix)) {
|
||
it->item.original.data = pixman_image_get_data(it->item.original.pix);
|
||
it->item.original.width = pixman_image_get_width(it->item.original.pix);
|
||
it->item.original.height = pixman_image_get_height(it->item.original.pix);
|
||
it->item.cols = (it->item.original.width + it->item.cell_width - 1) / it->item.cell_width;
|
||
it->item.rows = (it->item.original.height + it->item.cell_height - 1) / it->item.cell_height;
|
||
sixel_invalidate_cache(&it->item);
|
||
}
|
||
|
||
sixel_insert(term, it->item);
|
||
}
|
||
|
||
tll_free(copy);
|
||
term->grid = active_grid;
|
||
}
|
||
|
||
void
|
||
sixel_reflow(struct terminal *term)
|
||
{
|
||
for (size_t i = 0; i < 2; i++) {
|
||
struct grid *grid = i == 0 ? &term->normal : &term->alt;
|
||
sixel_reflow_grid(term, grid);
|
||
}
|
||
}
|
||
|
||
void
|
||
sixel_unhook(struct terminal *term)
|
||
{
|
||
int pixel_row_idx = 0;
|
||
int pixel_rows_left = term->sixel.image.height;
|
||
const int stride = term->sixel.image.width * sizeof(uint32_t);
|
||
|
||
/*
|
||
* When sixel scrolling is enabled (the default), sixels behave
|
||
* pretty much like normal output; the sixel starts at the current
|
||
* cursor position and the cursor is moved to a point after the
|
||
* sixel.
|
||
*
|
||
* Furthermore, if the sixel reaches the bottom of the scrolling
|
||
* region, the terminal content is scrolled.
|
||
*
|
||
* When scrolling is disabled, sixels always start at (0,0), the
|
||
* cursor is not moved at all, and the terminal content never
|
||
* scrolls.
|
||
*/
|
||
|
||
const bool do_scroll = term->sixel.scrolling;
|
||
|
||
/* Number of rows we're allowed to use.
|
||
*
|
||
* When scrolling is enabled, we always allow the entire sixel to
|
||
* be emitted.
|
||
*
|
||
* When disabled, only the number of screen rows may be used. */
|
||
int rows_avail = do_scroll
|
||
? (term->sixel.image.height + term->cell_height - 1) / term->cell_height
|
||
: term->scroll_region.end;
|
||
|
||
/* Initial sixel coordinates */
|
||
int start_row = do_scroll ? term->grid->cursor.point.row : 0;
|
||
const int start_col = do_scroll ? term->grid->cursor.point.col : 0;
|
||
|
||
/* Total number of rows needed by image (+ optional newline at the end) */
|
||
const int rows_needed =
|
||
(term->sixel.image.height + term->cell_height - 1) / term->cell_height +
|
||
(term->sixel.cursor_right_of_graphics ? 0 : 1);
|
||
|
||
bool free_image_data = true;
|
||
|
||
/* We do not allow sixels to cross the scrollback wrap-around, as
|
||
* this makes intersection calculations much more complicated */
|
||
while (pixel_rows_left > 0 &&
|
||
rows_avail > 0 &&
|
||
rows_needed <= term->grid->num_rows)
|
||
{
|
||
const int cur_row = (term->grid->offset + start_row) & (term->grid->num_rows - 1);
|
||
const int rows_left_until_wrap_around = term->grid->num_rows - cur_row;
|
||
const int usable_rows = min(rows_avail, rows_left_until_wrap_around);
|
||
|
||
const int pixel_rows_avail = usable_rows * term->cell_height;
|
||
|
||
const int width = term->sixel.image.width;
|
||
const int height = min(pixel_rows_left, pixel_rows_avail);
|
||
|
||
uint32_t *img_data;
|
||
if (pixel_row_idx == 0 && height == pixel_rows_left) {
|
||
/* Entire image will be emitted as a single chunk - reuse
|
||
* the source buffer */
|
||
img_data = term->sixel.image.data;
|
||
free_image_data = false;
|
||
} else {
|
||
xassert(free_image_data);
|
||
img_data = xmalloc(height * stride);
|
||
memcpy(
|
||
img_data,
|
||
&((uint8_t *)term->sixel.image.data)[pixel_row_idx * stride],
|
||
height * stride);
|
||
}
|
||
|
||
struct sixel image = {
|
||
.pix = NULL,
|
||
.width = -1,
|
||
.height = -1,
|
||
.rows = (height + term->cell_height - 1) / term->cell_height,
|
||
.cols = (width + term->cell_width - 1) / term->cell_width,
|
||
.pos = (struct coord){start_col, cur_row},
|
||
.opaque = !term->sixel.transparent_bg,
|
||
.cell_width = term->cell_width,
|
||
.cell_height = term->cell_height,
|
||
.original = {
|
||
.data = img_data,
|
||
.pix = NULL,
|
||
.width = width,
|
||
.height = height,
|
||
},
|
||
.scaled = {
|
||
.data = NULL,
|
||
.pix = NULL,
|
||
.width = -1,
|
||
.height = -1,
|
||
},
|
||
};
|
||
|
||
xassert(image.rows <= term->grid->num_rows);
|
||
xassert(image.pos.row + image.rows - 1 < term->grid->num_rows);
|
||
|
||
LOG_DBG("generating %s %dx%d pixman image at %d-%d",
|
||
image.opaque ? "opaque" : "transparent",
|
||
image.width, image.height,
|
||
image.pos.row, image.pos.row + image.rows);
|
||
|
||
image.original.pix = pixman_image_create_bits_no_clear(
|
||
PIXMAN_a8r8g8b8, image.original.width, image.original.height,
|
||
img_data, stride);
|
||
|
||
pixel_row_idx += height;
|
||
pixel_rows_left -= height;
|
||
rows_avail -= image.rows;
|
||
|
||
if (do_scroll) {
|
||
/*
|
||
* Linefeeds - always one less than the number of rows
|
||
* occupied by the image.
|
||
*
|
||
* Unless this is *not* the last chunk. In that case,
|
||
* linefeed past the chunk, so that the next chunk
|
||
* "starts" at a "new" row.
|
||
*/
|
||
const int linefeed_count = rows_avail == 0
|
||
? max(0, image.rows - 1)
|
||
: image.rows;
|
||
|
||
xassert(rows_avail == 0 ||
|
||
image.original.height % term->cell_height == 0);
|
||
|
||
for (size_t i = 0; i < linefeed_count; i++)
|
||
term_linefeed(term);
|
||
|
||
/* Position text cursor if this is the last image chunk */
|
||
if (rows_avail == 0) {
|
||
int row = term->grid->cursor.point.row;
|
||
|
||
/*
|
||
* Position the text cursor based on the **upper**
|
||
* pixel, of the last sixel.
|
||
*
|
||
* In most cases, that’ll end up being the very last
|
||
* row of the sixel (which we’re already at, thanks to
|
||
* the linefeeds). But for some combinations of font
|
||
* and image sizes, the final cursor position is
|
||
* higher up.
|
||
*/
|
||
const int sixel_row_height = 6 * term->sixel.pan;
|
||
const int sixel_rows = (image.original.height + sixel_row_height - 1) / sixel_row_height;
|
||
const int upper_pixel_last_sixel = (sixel_rows - 1) * sixel_row_height;
|
||
const int term_rows = (upper_pixel_last_sixel + term->cell_height - 1) / term->cell_height;
|
||
|
||
xassert(term_rows <= image.rows);
|
||
|
||
row -= (image.rows - term_rows);
|
||
|
||
term_cursor_to(
|
||
term,
|
||
max(0, row),
|
||
(term->sixel.cursor_right_of_graphics
|
||
? min(image.pos.col + image.cols, term->cols - 1)
|
||
: image.pos.col));
|
||
}
|
||
}
|
||
|
||
/* Dirty touched cells, and scroll terminal content if necessary */
|
||
for (size_t i = 0; i < image.rows; i++) {
|
||
struct row *row = term->grid->rows[cur_row + i];
|
||
row->dirty = true;
|
||
|
||
for (int col = image.pos.col;
|
||
col < min(image.pos.col + image.cols, term->cols);
|
||
col++)
|
||
{
|
||
row->cells[col].attrs.clean = 0;
|
||
}
|
||
|
||
}
|
||
|
||
_sixel_overwrite_by_rectangle(
|
||
term, image.pos.row, image.pos.col, image.rows, image.cols,
|
||
&image.original.pix, &image.opaque);
|
||
|
||
if (image.original.data != pixman_image_get_data(image.original.pix)) {
|
||
image.original.data = pixman_image_get_data(image.original.pix);
|
||
image.original.width = pixman_image_get_width(image.original.pix);
|
||
image.original.height = pixman_image_get_height(image.original.pix);
|
||
image.cols = (image.original.width + image.cell_width - 1) / image.cell_width;
|
||
image.rows = (image.original.height + image.cell_height - 1) / image.cell_height;
|
||
sixel_invalidate_cache(&image);
|
||
}
|
||
|
||
sixel_insert(term, image);
|
||
|
||
if (do_scroll)
|
||
start_row = term->grid->cursor.point.row;
|
||
else
|
||
start_row -= image.rows;
|
||
}
|
||
|
||
if (free_image_data)
|
||
free(term->sixel.image.data);
|
||
|
||
term->sixel.image.data = NULL;
|
||
term->sixel.image.width = 0;
|
||
term->sixel.image.height = 0;
|
||
term->sixel.pos = (struct coord){0, 0};
|
||
|
||
free(term->sixel.private_palette);
|
||
term->sixel.private_palette = NULL;
|
||
|
||
LOG_DBG("you now have %zu sixels in current grid",
|
||
tll_length(term->grid->sixel_images));
|
||
|
||
term_update_ascii_printer(term);
|
||
render_refresh(term);
|
||
}
|
||
|
||
static void
|
||
resize_horizontally(struct terminal *term, int new_width)
|
||
{
|
||
if (unlikely(new_width > term->sixel.max_width)) {
|
||
LOG_WARN("maximum image dimensions exceeded, truncating");
|
||
new_width = term->sixel.max_width;
|
||
}
|
||
|
||
if (unlikely(term->sixel.image.width == new_width))
|
||
return;
|
||
|
||
const int sixel_row_height = 6 * term->sixel.pan;
|
||
|
||
uint32_t *old_data = term->sixel.image.data;
|
||
const int old_width = term->sixel.image.width;
|
||
|
||
int height;
|
||
if (unlikely(term->sixel.image.height == 0)) {
|
||
/* Lazy initialize height on first printed sixel */
|
||
xassert(old_width == 0);
|
||
term->sixel.image.height = height = sixel_row_height;
|
||
} else
|
||
height = term->sixel.image.height;
|
||
|
||
LOG_DBG("resizing image horizontally: %dx(%d) -> %dx(%d)",
|
||
term->sixel.image.width, term->sixel.image.height,
|
||
new_width, height);
|
||
|
||
int alloc_height = (height + sixel_row_height - 1) / sixel_row_height * sixel_row_height;
|
||
|
||
xassert(new_width > 0);
|
||
xassert(alloc_height > 0);
|
||
|
||
/* Width (and thus stride) change - need to allocate a new buffer */
|
||
uint32_t *new_data = xmalloc(new_width * alloc_height * sizeof(uint32_t));
|
||
|
||
uint32_t bg = term->sixel.default_bg;
|
||
|
||
/* Copy old rows, and initialize new columns to background color */
|
||
for (int r = 0; r < height; r++) {
|
||
memcpy(&new_data[r * new_width],
|
||
&old_data[r * old_width],
|
||
old_width * sizeof(uint32_t));
|
||
|
||
for (int c = old_width; c < new_width; c++)
|
||
new_data[r * new_width + c] = bg;
|
||
}
|
||
|
||
free(old_data);
|
||
|
||
term->sixel.image.data = new_data;
|
||
term->sixel.image.width = new_width;
|
||
term->sixel.row_byte_ofs = term->sixel.pos.row * new_width;
|
||
}
|
||
|
||
static bool
|
||
resize_vertically(struct terminal *term, int new_height)
|
||
{
|
||
LOG_DBG("resizing image vertically: (%d)x%d -> (%d)x%d",
|
||
term->sixel.image.width, term->sixel.image.height,
|
||
term->sixel.image.width, new_height);
|
||
|
||
if (unlikely(new_height > term->sixel.max_height)) {
|
||
LOG_WARN("maximum image dimensions reached");
|
||
return false;
|
||
}
|
||
|
||
uint32_t *old_data = term->sixel.image.data;
|
||
const int width = term->sixel.image.width;
|
||
const int old_height = term->sixel.image.height;
|
||
|
||
int alloc_height = (new_height + 6 - 1) / 6 * 6;
|
||
|
||
xassert(new_height > 0);
|
||
|
||
if (unlikely(width == 0)) {
|
||
xassert(term->sixel.image.data == NULL);
|
||
term->sixel.image.height = new_height;
|
||
return true;
|
||
}
|
||
|
||
uint32_t *new_data = realloc(
|
||
old_data, width * alloc_height * sizeof(uint32_t));
|
||
|
||
if (new_data == NULL) {
|
||
LOG_ERRNO("failed to reallocate sixel image buffer");
|
||
return false;
|
||
}
|
||
|
||
uint32_t bg = term->sixel.default_bg;
|
||
|
||
/* Initialize new rows to background color */
|
||
for (int r = old_height; r < new_height; r++) {
|
||
for (int c = 0; c < width; c++)
|
||
new_data[r * width + c] = bg;
|
||
}
|
||
|
||
term->sixel.image.data = new_data;
|
||
term->sixel.image.height = new_height;
|
||
return true;
|
||
}
|
||
|
||
static bool
|
||
resize(struct terminal *term, int new_width, int new_height)
|
||
{
|
||
LOG_DBG("resizing image: %dx%d -> %dx%d",
|
||
term->sixel.image.width, term->sixel.image.height,
|
||
new_width, new_height);
|
||
|
||
if (unlikely(new_width > term->sixel.max_width)) {
|
||
LOG_WARN("maximum image width exceeded, truncating");
|
||
new_width = term->sixel.max_width;
|
||
}
|
||
|
||
if (unlikely(new_height > term->sixel.max_height)) {
|
||
LOG_WARN("maximum image height exceeded, truncating");
|
||
new_height = term->sixel.max_height;
|
||
}
|
||
|
||
uint32_t *old_data = term->sixel.image.data;
|
||
const int old_width = term->sixel.image.width;
|
||
const int old_height = term->sixel.image.height;
|
||
|
||
if (unlikely(old_width == new_width && old_height == new_height))
|
||
return true;
|
||
|
||
const int sixel_row_height = 6 * term->sixel.pan;
|
||
int alloc_new_width = new_width;
|
||
int alloc_new_height = (new_height + sixel_row_height - 1) / sixel_row_height * sixel_row_height;
|
||
xassert(alloc_new_height >= new_height);
|
||
xassert(alloc_new_height - new_height < sixel_row_height);
|
||
|
||
uint32_t *new_data = NULL;
|
||
uint32_t bg = term->sixel.default_bg;
|
||
|
||
if (new_width == old_width) {
|
||
/* Width (and thus stride) is the same, so we can simply
|
||
* re-alloc the existing buffer */
|
||
|
||
new_data = realloc(old_data, alloc_new_width * alloc_new_height * sizeof(uint32_t));
|
||
if (new_data == NULL) {
|
||
LOG_ERRNO("failed to reallocate sixel image buffer");
|
||
return false;
|
||
}
|
||
|
||
xassert(new_height > old_height);
|
||
|
||
} else {
|
||
/* Width (and thus stride) change - need to allocate a new buffer */
|
||
xassert(new_width > old_width);
|
||
new_data = xmalloc(alloc_new_width * alloc_new_height * sizeof(uint32_t));
|
||
|
||
/* Copy old rows, and initialize new columns to background color */
|
||
for (int r = 0; r < min(old_height, new_height); r++) {
|
||
memcpy(&new_data[r * new_width], &old_data[r * old_width], old_width * sizeof(uint32_t));
|
||
|
||
for (int c = old_width; c < new_width; c++)
|
||
new_data[r * new_width + c] = bg;
|
||
}
|
||
free(old_data);
|
||
}
|
||
|
||
/* Initialize new rows to background color */
|
||
for (int r = old_height; r < new_height; r++) {
|
||
for (int c = 0; c < new_width; c++)
|
||
new_data[r * new_width + c] = bg;
|
||
}
|
||
|
||
xassert(new_data != NULL);
|
||
term->sixel.image.data = new_data;
|
||
term->sixel.image.width = new_width;
|
||
term->sixel.image.height = new_height;
|
||
term->sixel.row_byte_ofs = term->sixel.pos.row * new_width;
|
||
|
||
return true;
|
||
}
|
||
|
||
static void
|
||
sixel_add_generic(struct terminal *term, int col, int width, uint32_t color,
|
||
uint8_t sixel)
|
||
{
|
||
xassert(term->sixel.pos.col < term->sixel.image.width);
|
||
xassert(term->sixel.pos.row < term->sixel.image.height);
|
||
|
||
const int pan = term->sixel.pan;
|
||
size_t ofs = term->sixel.row_byte_ofs + col;
|
||
uint32_t *data = &term->sixel.image.data[ofs];
|
||
|
||
for (int i = 0; i < 6; i++, sixel >>= 1) {
|
||
if (sixel & 1) {
|
||
for (int r = 0; r < pan; r++, data += width)
|
||
*data = color;
|
||
} else
|
||
data += width * pan;
|
||
}
|
||
|
||
xassert(sixel == 0);
|
||
}
|
||
|
||
static void
|
||
sixel_add_ar_11(struct terminal *term, int col, int width, uint32_t color,
|
||
uint8_t sixel)
|
||
{
|
||
xassert(term->sixel.pos.col < term->sixel.image.width);
|
||
xassert(term->sixel.pos.row < term->sixel.image.height);
|
||
xassert(term->sixel.pan == 1);
|
||
|
||
const size_t ofs = term->sixel.row_byte_ofs + col;
|
||
uint32_t *data = &term->sixel.image.data[ofs];
|
||
|
||
if (sixel & 0x01)
|
||
*data = color;
|
||
data += width;
|
||
if (sixel & 0x02)
|
||
*data = color;
|
||
data += width;
|
||
if (sixel & 0x04)
|
||
*data = color;
|
||
data += width;
|
||
if (sixel & 0x08)
|
||
*data = color;
|
||
data += width;
|
||
if (sixel & 0x10)
|
||
*data = color;
|
||
data += width;
|
||
if (sixel & 0x20)
|
||
*data = color;
|
||
}
|
||
|
||
static void
|
||
sixel_add_many_generic(struct terminal *term, uint8_t c, unsigned count)
|
||
{
|
||
int col = term->sixel.pos.col;
|
||
int width = term->sixel.image.width;
|
||
|
||
count *= term->sixel.pad;
|
||
|
||
if (unlikely(col + count - 1 >= width)) {
|
||
resize_horizontally(term, col + count);
|
||
width = term->sixel.image.width;
|
||
count = min(count, max(width - col, 0));
|
||
}
|
||
|
||
uint32_t color = term->sixel.color;
|
||
for (unsigned i = 0; i < count; i++, col++) {
|
||
/* TODO: is it worth dynamically dispatching to either generic or AR-11? */
|
||
sixel_add_generic(term, col, width, color, c);
|
||
}
|
||
|
||
term->sixel.pos.col = col;
|
||
}
|
||
|
||
static void
|
||
sixel_add_many_ar_11(struct terminal *term, uint8_t c, unsigned count)
|
||
{
|
||
xassert(term->sixel.pan == 1);
|
||
xassert(term->sixel.pad == 1);
|
||
|
||
int col = term->sixel.pos.col;
|
||
int width = term->sixel.image.width;
|
||
|
||
if (unlikely(col + count - 1 >= width)) {
|
||
resize_horizontally(term, col + count);
|
||
width = term->sixel.image.width;
|
||
count = min(count, max(width - col, 0));
|
||
}
|
||
|
||
uint32_t color = term->sixel.color;
|
||
for (unsigned i = 0; i < count; i++, col++)
|
||
sixel_add_ar_11(term, col, width, color, c);
|
||
|
||
term->sixel.pos.col = col;
|
||
}
|
||
|
||
IGNORE_WARNING("-Wpedantic")
|
||
|
||
static void
|
||
decsixel_generic(struct terminal *term, uint8_t c)
|
||
{
|
||
switch (c) {
|
||
case '"':
|
||
term->sixel.state = SIXEL_DECGRA;
|
||
term->sixel.param = 0;
|
||
term->sixel.param_idx = 0;
|
||
break;
|
||
|
||
case '!':
|
||
term->sixel.state = SIXEL_DECGRI;
|
||
term->sixel.param = 0;
|
||
term->sixel.param_idx = 0;
|
||
term->sixel.repeat_count = 1;
|
||
break;
|
||
|
||
case '#':
|
||
term->sixel.state = SIXEL_DECGCI;
|
||
term->sixel.color_idx = 0;
|
||
term->sixel.param = 0;
|
||
term->sixel.param_idx = 0;
|
||
break;
|
||
|
||
case '$':
|
||
if (likely(term->sixel.pos.col <= term->sixel.max_width)) {
|
||
/*
|
||
* We set, and keep, ‘col’ outside the image boundary when
|
||
* we’ve reached the maximum image height, to avoid also
|
||
* having to check the row vs image height in the common
|
||
* path in sixel_add().
|
||
*/
|
||
term->sixel.pos.col = 0;
|
||
}
|
||
break;
|
||
|
||
case '-':
|
||
term->sixel.pos.row += 6 * term->sixel.pan;
|
||
term->sixel.pos.col = 0;
|
||
term->sixel.row_byte_ofs += term->sixel.image.width * 6 * term->sixel.pan;
|
||
|
||
if (term->sixel.pos.row >= term->sixel.image.height) {
|
||
if (!resize_vertically(term, term->sixel.pos.row + 6 * term->sixel.pan))
|
||
term->sixel.pos.col = term->sixel.max_width + 1 * term->sixel.pad;
|
||
}
|
||
break;
|
||
|
||
case '?' ... '~':
|
||
sixel_add_many_generic(term, c - 63, 1);
|
||
break;
|
||
|
||
case ' ':
|
||
case '\n':
|
||
case '\r':
|
||
break;
|
||
|
||
default:
|
||
LOG_WARN("invalid sixel character: '%c' at idx=%zu", c, count);
|
||
break;
|
||
}
|
||
}
|
||
|
||
UNIGNORE_WARNINGS
|
||
|
||
static void
|
||
decsixel_ar_11(struct terminal *term, uint8_t c)
|
||
{
|
||
if (likely(c >= '?' && c <= '~'))
|
||
sixel_add_many_ar_11(term, c - 63, 1);
|
||
else
|
||
decsixel_generic(term, c);
|
||
}
|
||
|
||
static void
|
||
decgra(struct terminal *term, uint8_t c)
|
||
{
|
||
switch (c) {
|
||
case '0': case '1': case '2': case '3': case '4':
|
||
case '5': case '6': case '7': case '8': case '9':
|
||
term->sixel.param *= 10;
|
||
term->sixel.param += c - '0';
|
||
break;
|
||
|
||
case ';':
|
||
if (term->sixel.param_idx < ALEN(term->sixel.params))
|
||
term->sixel.params[term->sixel.param_idx++] = term->sixel.param;
|
||
term->sixel.param = 0;
|
||
break;
|
||
|
||
default: {
|
||
if (term->sixel.param_idx < ALEN(term->sixel.params))
|
||
term->sixel.params[term->sixel.param_idx++] = term->sixel.param;
|
||
|
||
int nparams = term->sixel.param_idx;
|
||
unsigned pan = nparams > 0 ? term->sixel.params[0] : 0;
|
||
unsigned pad = nparams > 1 ? term->sixel.params[1] : 0;
|
||
unsigned ph = nparams > 2 ? term->sixel.params[2] : 0;
|
||
unsigned pv = nparams > 3 ? term->sixel.params[3] : 0;
|
||
|
||
pan = pan > 0 ? pan : 1;
|
||
pad = pad > 0 ? pad : 1;
|
||
|
||
pv *= pan;
|
||
ph *= pad;
|
||
|
||
term->sixel.pan = pan;
|
||
term->sixel.pad = pad;
|
||
|
||
LOG_DBG("pan=%u, pad=%u (aspect ratio = %d:%d), size=%ux%u",
|
||
pan, pad, pan, pad, ph, pv);
|
||
|
||
if (ph >= term->sixel.image.height && pv >= term->sixel.image.width &&
|
||
ph <= term->sixel.max_height && pv <= term->sixel.max_width)
|
||
{
|
||
resize(term, ph, pv);
|
||
}
|
||
|
||
term->sixel.state = SIXEL_DECSIXEL;
|
||
|
||
/* Update DCS put handler, since pan/pad may have changed */
|
||
term->vt.dcs.put_handler = pan == 1 && pad == 1
|
||
? &sixel_put_ar_11
|
||
: &sixel_put_generic;
|
||
|
||
if (likely(pan == 1 && pad == 1))
|
||
decsixel_ar_11(term, c);
|
||
else
|
||
decsixel_generic(term, c);
|
||
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
IGNORE_WARNING("-Wpedantic")
|
||
|
||
static void
|
||
decgri_generic(struct terminal *term, uint8_t c)
|
||
{
|
||
switch (c) {
|
||
case '0': case '1': case '2': case '3': case '4':
|
||
case '5': case '6': case '7': case '8': case '9': {
|
||
unsigned param = term->sixel.param;
|
||
param *= 10;
|
||
param += c - '0';
|
||
term->sixel.repeat_count = term->sixel.param = param;
|
||
break;
|
||
}
|
||
|
||
case '?' ... '~': {
|
||
unsigned count = term->sixel.repeat_count;
|
||
if (unlikely(count == 0)) {
|
||
count = 1;
|
||
}
|
||
|
||
sixel_add_many_generic(term, c - 63, count);
|
||
term->sixel.state = SIXEL_DECSIXEL;
|
||
break;
|
||
}
|
||
|
||
default:
|
||
term->sixel.state = SIXEL_DECSIXEL;
|
||
term->vt.dcs.put_handler(term, c);
|
||
break;
|
||
}
|
||
}
|
||
|
||
UNIGNORE_WARNINGS
|
||
|
||
static void
|
||
decgri_ar_11(struct terminal *term, uint8_t c)
|
||
{
|
||
if (likely(c >= '?' && c <= '~')) {
|
||
unsigned count = term->sixel.repeat_count;
|
||
if (unlikely(count == 0)) {
|
||
count = 1;
|
||
}
|
||
|
||
sixel_add_many_ar_11(term, c - 63, count);
|
||
term->sixel.state = SIXEL_DECSIXEL;
|
||
} else
|
||
decgri_generic(term, c);
|
||
}
|
||
|
||
static void
|
||
decgci(struct terminal *term, uint8_t c)
|
||
{
|
||
switch (c) {
|
||
case '0': case '1': case '2': case '3': case '4':
|
||
case '5': case '6': case '7': case '8': case '9':
|
||
term->sixel.param *= 10;
|
||
term->sixel.param += c - '0';
|
||
break;
|
||
|
||
case ';':
|
||
if (term->sixel.param_idx < ALEN(term->sixel.params))
|
||
term->sixel.params[term->sixel.param_idx++] = term->sixel.param;
|
||
term->sixel.param = 0;
|
||
break;
|
||
|
||
default: {
|
||
if (term->sixel.param_idx < ALEN(term->sixel.params))
|
||
term->sixel.params[term->sixel.param_idx++] = term->sixel.param;
|
||
|
||
int nparams = term->sixel.param_idx;
|
||
|
||
if (nparams > 0)
|
||
term->sixel.color_idx = min(term->sixel.params[0], term->sixel.palette_size - 1);
|
||
|
||
if (nparams > 4) {
|
||
unsigned format = term->sixel.params[1];
|
||
int c1 = term->sixel.params[2];
|
||
int c2 = term->sixel.params[3];
|
||
int c3 = term->sixel.params[4];
|
||
|
||
switch (format) {
|
||
case 1: { /* HLS */
|
||
int hue = min(c1, 360);
|
||
int lum = min(c2, 100);
|
||
int sat = min(c3, 100);
|
||
|
||
/*
|
||
* Sixel’s HLS use the following primary color hues:
|
||
* blue: 0°
|
||
* red: 120°
|
||
* green: 240°
|
||
*
|
||
* While “standard” HSL uses:
|
||
* red: 0°
|
||
* green: 120°
|
||
* blue: 240°
|
||
*/
|
||
hue = (hue + 240) % 360;
|
||
|
||
uint32_t rgb = hsl_to_rgb(hue, sat, lum);
|
||
|
||
LOG_DBG("setting palette #%d = HLS %hhu/%hhu/%hhu (0x%06x)",
|
||
term->sixel.color_idx, hue, lum, sat, rgb);
|
||
|
||
term->sixel.palette[term->sixel.color_idx] = 0xffu << 24 | rgb;
|
||
break;
|
||
}
|
||
|
||
case 2: { /* RGB */
|
||
uint8_t r = 255 * min(c1, 100) / 100;
|
||
uint8_t g = 255 * min(c2, 100) / 100;
|
||
uint8_t b = 255 * min(c3, 100) / 100;
|
||
|
||
LOG_DBG("setting palette #%d = RGB %hhu/%hhu/%hhu",
|
||
term->sixel.color_idx, r, g, b);
|
||
|
||
term->sixel.palette[term->sixel.color_idx] =
|
||
0xffu << 24 | r << 16 | g << 8 | b;
|
||
break;
|
||
}
|
||
}
|
||
} else
|
||
term->sixel.color = term->sixel.palette[term->sixel.color_idx];
|
||
|
||
term->sixel.state = SIXEL_DECSIXEL;
|
||
|
||
if (likely(term->sixel.pan == 1 && term->sixel.pad == 1))
|
||
decsixel_ar_11(term, c);
|
||
else
|
||
decsixel_generic(term, c);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
sixel_put_generic(struct terminal *term, uint8_t c)
|
||
{
|
||
switch (term->sixel.state) {
|
||
case SIXEL_DECSIXEL: decsixel_generic(term, c); break;
|
||
case SIXEL_DECGRA: decgra(term, c); break;
|
||
case SIXEL_DECGRI: decgri_generic(term, c); break;
|
||
case SIXEL_DECGCI: decgci(term, c); break;
|
||
}
|
||
|
||
count++;
|
||
}
|
||
|
||
static void
|
||
sixel_put_ar_11(struct terminal *term, uint8_t c)
|
||
{
|
||
switch (term->sixel.state) {
|
||
case SIXEL_DECSIXEL: decsixel_ar_11(term, c); break;
|
||
case SIXEL_DECGRA: decgra(term, c); break;
|
||
case SIXEL_DECGRI: decgri_ar_11(term, c); break;
|
||
case SIXEL_DECGCI: decgci(term, c); break;
|
||
}
|
||
|
||
count++;
|
||
}
|
||
|
||
void
|
||
sixel_colors_report_current(struct terminal *term)
|
||
{
|
||
char reply[24];
|
||
size_t n = xsnprintf(reply, sizeof(reply), "\033[?1;0;%uS", term->sixel.palette_size);
|
||
term_to_slave(term, reply, n);
|
||
LOG_DBG("query response for current color count: %u", term->sixel.palette_size);
|
||
}
|
||
|
||
void
|
||
sixel_colors_reset(struct terminal *term)
|
||
{
|
||
LOG_DBG("sixel palette size reset to %u", SIXEL_MAX_COLORS);
|
||
|
||
free(term->sixel.palette);
|
||
term->sixel.palette = NULL;
|
||
|
||
term->sixel.palette_size = SIXEL_MAX_COLORS;
|
||
sixel_colors_report_current(term);
|
||
}
|
||
|
||
void
|
||
sixel_colors_set(struct terminal *term, unsigned count)
|
||
{
|
||
unsigned new_palette_size = min(max(2, count), SIXEL_MAX_COLORS);
|
||
LOG_DBG("sixel palette size set to %u", new_palette_size);
|
||
|
||
free(term->sixel.private_palette);
|
||
free(term->sixel.shared_palette);
|
||
term->sixel.private_palette = NULL;
|
||
term->sixel.shared_palette = NULL;
|
||
|
||
term->sixel.palette_size = new_palette_size;
|
||
sixel_colors_report_current(term);
|
||
}
|
||
|
||
void
|
||
sixel_colors_report_max(struct terminal *term)
|
||
{
|
||
char reply[24];
|
||
size_t n = xsnprintf(reply, sizeof(reply), "\033[?1;0;%uS", SIXEL_MAX_COLORS);
|
||
term_to_slave(term, reply, n);
|
||
LOG_DBG("query response for max color count: %u", SIXEL_MAX_COLORS);
|
||
}
|
||
|
||
void
|
||
sixel_geometry_report_current(struct terminal *term)
|
||
{
|
||
char reply[64];
|
||
size_t n = xsnprintf(reply, sizeof(reply), "\033[?2;0;%u;%uS",
|
||
min(term->cols * term->cell_width, term->sixel.max_width),
|
||
min(term->rows * term->cell_height, term->sixel.max_height));
|
||
term_to_slave(term, reply, n);
|
||
|
||
LOG_DBG("query response for current sixel geometry: %ux%u",
|
||
term->sixel.max_width, term->sixel.max_height);
|
||
}
|
||
|
||
void
|
||
sixel_geometry_reset(struct terminal *term)
|
||
{
|
||
LOG_DBG("sixel geometry reset to %ux%u", SIXEL_MAX_WIDTH, SIXEL_MAX_HEIGHT);
|
||
term->sixel.max_width = SIXEL_MAX_WIDTH;
|
||
term->sixel.max_height = SIXEL_MAX_HEIGHT;
|
||
sixel_geometry_report_current(term);
|
||
}
|
||
|
||
void
|
||
sixel_geometry_set(struct terminal *term, unsigned width, unsigned height)
|
||
{
|
||
LOG_DBG("sixel geometry set to %ux%u", width, height);
|
||
term->sixel.max_width = width;
|
||
term->sixel.max_height = height;
|
||
sixel_geometry_report_current(term);
|
||
}
|
||
|
||
void
|
||
sixel_geometry_report_max(struct terminal *term)
|
||
{
|
||
unsigned max_width = term->sixel.max_width;
|
||
unsigned max_height = term->sixel.max_height;
|
||
|
||
char reply[64];
|
||
size_t n = xsnprintf(reply, sizeof(reply), "\033[?2;0;%u;%uS", max_width, max_height);
|
||
term_to_slave(term, reply, n);
|
||
|
||
LOG_DBG("query response for max sixel geometry: %ux%u",
|
||
max_width, max_height);
|
||
}
|