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terminal/new: decaln manages memory

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This commit is contained in:
Mitchell Hashimoto
2024-02-27 21:26:04 -08:00
parent 5ad6228822
commit 5a1d41820b
1 changed files with 20 additions and 19 deletions
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39
src/terminal/new/Terminal.zig
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@ -1723,8 +1723,6 @@ pub fn eraseDisplay(
///
/// Sets the cursor to the top left corner.
pub fn decaln(self: *Terminal) !void {
// TODO: erase display to gc graphemes, styles
// Clear our stylistic attributes. This is the only thing that can
// fail so we do it first so we can undo it.
const old_style = self.screen.cursor.style;
@ -1751,24 +1749,27 @@ pub fn decaln(self: *Terminal) !void {
// Move our cursor to the top-left
self.setCursorPos(1, 1);
// Fill with Es, does not move cursor.
// TODO: cursor across pages
var page = &self.screen.cursor.page_offset.page.data;
const rows: [*]Row = @ptrCast(self.screen.cursor.page_row);
for (0..self.rows) |y| {
const row: *Row = @ptrCast(rows + y);
const cells = page.getCells(row);
@memset(cells, .{
.content_tag = .codepoint,
.content = .{ .codepoint = 'E' },
.style_id = self.screen.cursor.style_id,
.protected = self.screen.cursor.protected,
});
// Erase the display which will deallocate graphames, styles, etc.
self.eraseDisplay(.complete, false);
// If we have a ref-counted style, increase
if (self.screen.cursor.style_ref) |ref| {
ref.* += @intCast(cells.len);
row.styled = true;
// Fill with Es, does not move cursor.
var it = self.screen.pages.rowChunkIterator(.{ .active = .{} }, null);
while (it.next()) |chunk| {
for (chunk.rows()) |*row| {
const cells_multi: [*]Cell = row.cells.ptr(chunk.page.data.memory);
const cells = cells_multi[0..self.cols];
@memset(cells, .{
.content_tag = .codepoint,
.content = .{ .codepoint = 'E' },
.style_id = self.screen.cursor.style_id,
.protected = self.screen.cursor.protected,
});
// If we have a ref-counted style, increase
if (self.screen.cursor.style_ref) |ref| {
ref.* += @intCast(cells.len);
row.styled = true;
}
}
}
}