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fix(dur): apply correct offset for animations bigger than the terminal

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Animations bigger than the rendering area would have an alignment to the
top left instead of center.
This commit is contained in:
Titanium Brain 2026-04-25 13:03:17 +01:00
commit 2792381af4
1 changed files with 4 additions and 7 deletions
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11
src/animations/DurFile.zig
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@ -358,11 +358,8 @@ fn calc_start_position(terminal_buffer: *TerminalBuffer, dur_movie: *DurFormat,
const buf_width: u32 = @intCast(terminal_buffer.width);
const buf_height: u32 = @intCast(terminal_buffer.height);
var movie_width: u32 = dur_movie.columns;
var movie_height: u32 = dur_movie.lines;
if (movie_width > buf_width) movie_width = buf_width;
if (movie_height > buf_height) movie_height = buf_height;
const movie_width: u32 = dur_movie.columns;
const movie_height: u32 = dur_movie.lines;
const start_pos: IVec2 = switch (offset_alignment) {
DurOffsetAlignment.center => .{ center(buf_width) - center(movie_width), center(buf_height) - center(movie_height) },
@ -545,14 +542,14 @@ fn draw(self: *DurFile) void {
const buf_height: u32 = @intCast(self.terminal_buffer.height);
// y is used as an iterator in the durformat, while cell_y gives us the correct placement for the cell (same for x)
for (0..self.frame_size[VEC_Y]) |y| {
for (@max(0, -self.start_pos[VEC_Y])..@intCast(self.frame_size[VEC_Y])) |y| {
const y_offset_i = @as(i32, @intCast(y)) + self.start_pos[VEC_Y];
// we skip the pass if it falls outside of the draw window (ensure no int underflow)
const cell_y: u32 = if (y_offset_i >= 0 and y_offset_i < buf_height) @intCast(y_offset_i) else continue;
var iter = std.unicode.Utf8View.initUnchecked(current_frame.contents[y]).iterator();
for (0..self.frame_size[VEC_X]) |x| {
for (@max(0, -self.start_pos[VEC_X])..@intCast(self.frame_size[VEC_X])) |x| {
const x_offset_i = @as(i32, @intCast(x)) + self.start_pos[VEC_X];
// skip pass, same as y but also increment the codepoint iter to fetch correct values in later passes
const cell_x: u32 = if (x_offset_i >= 0 and x_offset_i < buf_width) @intCast(x_offset_i) else {