parent
4a55140672
commit
6d41563226
18
src/main.zig
18
src/main.zig
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@ -38,6 +38,7 @@ fn usage(args: [][]u8) !void {
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const Options = struct {
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background_filename: [:0]u8,
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device_file: [:0]u8,
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flip: bool,
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};
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pub fn main() !void {
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defer deinit();
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@ -88,6 +89,10 @@ pub fn main() !void {
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var pixels: [display.WIDTH * display.HEIGHT]u8 = undefined;
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try convertImage(opts.background_filename, &pixels, noTextForLine);
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try addTextToImage(alloc, &pixels, &lines);
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if (opts.flip) {
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try stdout.print("Flipping\n", .{});
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flipImage(&pixels);
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}
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try bw.flush();
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// We should take the linux device file here, then inspect for ttyUSB vs
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@ -126,6 +131,10 @@ fn processArgs(args: [][:0]u8, line_array: *[display.LINES]*const [:0]u8) !Optio
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var is_filename = false;
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var line_number: ?usize = null;
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for (args[1..], 1..) |arg, i| {
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if (std.mem.eql(u8, "-flip", arg)) {
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opts.flip = true;
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continue;
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}
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if (std.mem.eql(u8, "-bg", arg)) {
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is_filename = true;
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continue;
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@ -162,6 +171,15 @@ fn areDigits(bytes: []u8) bool {
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}
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return true;
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}
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fn flipImage(pixels: *[display.WIDTH * display.HEIGHT]u8) void {
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for (pixels[0..(display.WIDTH * display.HEIGHT / 2)], 0..) |_, i| {
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const dest_pixel = pixels[pixels.len - 1 - i];
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const src_pixel = pixels[i];
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pixels[pixels.len - 1 - i] = src_pixel;
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pixels[i] = dest_pixel;
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}
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}
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fn addTextToImage(allocator: std.mem.Allocator, pixels: *[display.WIDTH * display.HEIGHT]u8, data: []*[]u8) !void {
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var maybe_font_data = try getFontData(allocator, DEFAULT_FONT);
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