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vt: initial implementation of alt screen + 256 colors

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This commit is contained in:
Daniel Eklöf 2019-06-23 15:00:27 +02:00
parent 35e5fa1f76
commit 199e4aa044
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GPG key ID: 5BBD4992C116573F
3 changed files with 170 additions and 41 deletions
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23
main.c
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@ -355,6 +355,8 @@ resize(struct context *c, int width, int height)
if (width == c->width && height == c->height)
return;
bool alt_screen_active = c->term.grid.cells == c->term.grid.alt_grid;
c->width = width;
c->height = height;
@ -364,17 +366,29 @@ resize(struct context *c, int width, int height)
c->term.grid.cell_height = (int)ceil(c->fextents.height);
c->term.grid.cols = c->width / c->term.grid.cell_width;
c->term.grid.rows = c->height / c->term.grid.cell_height;
c->term.grid.cells = realloc(c->term.grid.cells,
c->term.grid.cols * c->term.grid.rows * sizeof(c->term.grid.cells[0]));
c->term.grid.normal_grid = realloc(
c->term.grid.normal_grid,
c->term.grid.cols * c->term.grid.rows * sizeof(c->term.grid.cells[0]));
c->term.grid.alt_grid = realloc(
c->term.grid.alt_grid,
c->term.grid.cols * c->term.grid.rows * sizeof(c->term.grid.cells[0]));
size_t new_cells_len = c->term.grid.cols * c->term.grid.rows;
for (size_t i = old_cells_len; i < new_cells_len; i++) {
c->term.grid.cells[i] = (struct cell){
c->term.grid.normal_grid[i] = (struct cell){
.attrs = {.foreground = default_foreground,
.background = default_background},
};
c->term.grid.alt_grid[i] = (struct cell){
.attrs = {.foreground = default_foreground,
.background = default_background},
};
}
c->term.grid.cells = alt_screen_active
? c->term.grid.alt_grid : c->term.grid.normal_grid;
LOG_DBG("resize: %dx%d, grid: cols=%d, rows=%d",
c->width, c->height, c->term.grid.cols, c->term.grid.rows);
@ -873,7 +887,8 @@ out:
if (c.wl.display != NULL)
wl_display_disconnect(c.wl.display);
free(c.term.grid.cells);
free(c.term.grid.normal_grid);
free(c.term.grid.alt_grid);
for (size_t i = 0; i < sizeof(c.fonts) / sizeof(c.fonts[0]); i++) {
if (c.fonts[i] != NULL)