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TextView: fix cols when appending to a buffer
If appending to a buffer through writer for example, the cols may not be
correct if the writes don't end up in a newline (\n). Fix this by
keeping track of the cols of previous append.
authored by
Jari Vetoniemi
and committed by
Tim Culverhouse
71b8ecc7
ef028bfe
+4
-1
+4
-1
src/widgets/TextView.zig
+4
-1
src/widgets/TextView.zig
···
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style_map: StyleMap = .{},
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rows: usize = 0,
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cols: usize = 0,
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+
// used when appending to a buffer
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+
last_cols: usize = 0,
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pub fn deinit(self: *@This(), allocator: std.mem.Allocator) void {
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self.style_map.deinit(allocator);
···
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/// Appends content to the buffer.
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pub fn append(self: *@This(), allocator: std.mem.Allocator, content: Content) !void {
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-
var cols: usize = 0;
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var cols: usize = self.last_cols;
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var iter = grapheme.Iterator.init(content.bytes, content.gd);
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const dw: DisplayWidth = .{ .data = content.wd };
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while (iter.next()) |g| {
···
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cols +|= dw.strWidth(cluster);
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}
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try self.content.appendSlice(allocator, content.bytes);
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self.last_cols = cols;
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self.cols = @max(self.cols, cols);
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self.rows +|= std.mem.count(u8, content.bytes, "\n");
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}