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add cursor to new screen

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This commit is contained in:
Mitchell Hashimoto
2022-08-31 15:13:30 -07:00
parent c7b7e3cb44
commit e8009f89cf
1 changed files with 20 additions and 11 deletions
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31
src/terminal/Screen2.zig
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@ -27,6 +27,20 @@ const Selection = @import("Selection.zig");
const log = std.log.scoped(.screen); const log = std.log.scoped(.screen);
/// Cursor represents the cursor state.
pub const Cursor = struct {
// x, y where the cursor currently exists (0-indexed). This x/y is
// always the offset in the active area.
x: usize = 0,
y: usize = 0,
// pen is the current cell styling to apply to new cells.
pen: Cell = .{ .char = 0 },
// The last column flag (LCF) used to do soft wrapping.
pending_wrap: bool = false,
};
/// This is a single item within the storage buffer. We use a union to /// This is a single item within the storage buffer. We use a union to
/// have different types of data in a single contiguous buffer. /// have different types of data in a single contiguous buffer.
/// ///
@ -316,6 +330,12 @@ max_scrollback: usize,
/// The row (offset from the top) where the viewport currently is. /// The row (offset from the top) where the viewport currently is.
viewport: usize, viewport: usize,
/// Each screen maintains its own cursor state.
cursor: Cursor = .{},
/// Saved cursor saved with DECSC (ESC 7).
saved_cursor: Cursor = .{},
/// Initialize a new screen. /// Initialize a new screen.
pub fn init( pub fn init(
alloc: Allocator, alloc: Allocator,
@ -465,17 +485,6 @@ fn scrollDelta(self: *Screen, delta: isize, grow: bool) void {
return; return;
} }
// {
// const rows_capacity = self.rowsCapacity();
// const rows_written = self.rowsWritten();
// log.warn("rows_written={} rows_capacity={} vp={} vp_new={}", .{
// rows_written,
// rows_capacity,
// self.viewport,
// self.viewport + @intCast(usize, delta),
// });
// }
// Add our delta to our viewport. If we're less than the max currently // Add our delta to our viewport. If we're less than the max currently
// allowed to scroll to the bottom (the end of the history), then we // allowed to scroll to the bottom (the end of the history), then we
// have space and we just return. // have space and we just return.