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grid: implement DAMAGE_SCROLL

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Daniel Eklöf 2019-06-21 14:29:15 +02:00
parent 0ddd96de0d
commit a50be28b9d
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GPG key ID: 5BBD4992C116573F
5 changed files with 142 additions and 15 deletions
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50
main.c
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@ -220,6 +220,51 @@ grid_render_update(struct context *c, struct buffer *buf, const struct damage *d
buf->width, (dmg->range.length + cols - 1) / cols * c->term.grid.cell_height);
}
static void
grid_render_scroll(struct context *c, struct buffer *buf,
const struct damage *dmg)
{
//int x = 0;
int dst_y = (dmg->scroll.top_margin + 0) * c->term.grid.cell_height;
int src_y = (dmg->scroll.top_margin + dmg->scroll.lines) * c->term.grid.cell_height;
int width = buf->width;
int height = (c->term.grid.rows -
dmg->scroll.top_margin -
dmg->scroll.bottom_margin -
dmg->scroll.lines) * c->term.grid.cell_height;
const uint32_t stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
LOG_DBG("damage: SCROLL: %d-%d by %d lines (dst-y: %d, src-y: %d, height: %d, stride: %d, mmap-size: %zu)",
dmg->scroll.top_margin,
c->term.grid.rows - dmg->scroll.bottom_margin,
dmg->scroll.lines,
dst_y, src_y, height, stride,
buf->size);
cairo_surface_flush(buf->cairo_surface);
uint8_t *raw = cairo_image_surface_get_data(buf->cairo_surface);
memmove(raw + dst_y * stride, raw + src_y * stride, height * stride);
cairo_surface_mark_dirty(buf->cairo_surface);
wl_surface_damage_buffer(c->wl.surface, 0, dst_y, width, height);
#if 1
const int cols = c->term.grid.cols;
struct damage erase = {
.type = DAMAGE_ERASE,
.range = {
.start = (c->term.grid.rows -
dmg->scroll.bottom_margin -
dmg->scroll.lines) * cols,
.length = dmg->scroll.lines * cols
},
};
grid_render_erase(c, buf, &erase);
#endif
}
static void
grid_render(struct context *c)
{
@ -234,6 +279,7 @@ grid_render(struct context *c)
cairo_set_operator(buf->cairo, CAIRO_OPERATOR_SOURCE);
cairo_set_scaled_font(buf->cairo, c->font);
//bool scroll = false;
tll_foreach(c->term.grid.damage, it) {
switch (it->item.type) {
case DAMAGE_ERASE:
@ -245,13 +291,15 @@ grid_render(struct context *c)
break;
case DAMAGE_SCROLL:
assert(false);
//scroll = true;
grid_render_scroll(c, buf, &it->item);
break;
}
tll_remove(c->term.grid.damage, it);
}
//cairo_surface_flush(buf->cairo_surface);
wl_surface_attach(c->wl.surface, buf->wl_buf, 0, 0);
struct wl_callback *cb = wl_surface_frame(c->wl.surface);