SVG印刷対応とメディア情報APIを追加

SVG入力を現在テープ幅に自動フィットして印刷できるようにし、アプリ側が余白計算できるようにテープ幅・DPI・最小送り量を取得するAPIを追加する。

Made-with: Cursor

ruby/lib/libptouch/binding.rb

@@ -28,10 +28,28 @@ module Libptouch
              :_pad, [:uint8, 3]
     end
 
+    class MediaInfo < FFI::Struct
+      layout :media_width_code, :uint8,
+             :media_kind_code, :uint8,
+             :_pad0, [:uint8, 6],
+             :print_dpi, :double,
+             :feed_dpi, :double,
+             :tape_width_mm, :double,
+             :printable_dots, :uint16,
+             :left_margin_dots, :uint16,
+             :right_margin_dots, :uint16,
+             :min_feed_dots, :uint16,
+             :min_feed_mm, :double
+    end
+
     class PngOptions < FFI::Struct
       layout :threshold, :uint8
     end
 
+    class SvgOptions < FFI::Struct
+      layout :threshold, :uint8
+    end
+
     attach_function :libptouch_create, [], :pointer
     attach_function :libptouch_destroy, [:pointer], :void
     attach_function :libptouch_strerror, [:pointer], :string
@@ -40,9 +58,12 @@ module Libptouch
     attach_function :libptouch_open_usb_vid_pid, %i[pointer uint16 uint16], :int
     attach_function :libptouch_close, [:pointer], :void
     attach_function :libptouch_check_raster, %i[pointer pointer size_t pointer], :int
+    attach_function :libptouch_get_current_media_info, %i[pointer pointer], :int
     attach_function :libptouch_print_raster, %i[pointer pointer size_t pointer], :int
     attach_function :libptouch_png_file_to_raster,
                     %i[pointer string pointer pointer pointer pointer], :int
+    attach_function :libptouch_svg_file_to_raster_fit_current_tape,
+                    %i[pointer string pointer pointer pointer pointer], :int
     attach_function :libptouch_free_raster, [:pointer], :void
     attach_function :libptouch_get_status, %i[pointer pointer], :int
   end