Add configuration for registering font

Author: hidakatsuya

lib/thinreports/config.rb

@@ -15,6 +15,7 @@ def self.config
   class Configuration
     def initialize
       @fallback_fonts = []
+      @fonts = {}
     end
 
     # @return [Array<String>]
@@ -32,5 +33,37 @@ def fallback_fonts
     def fallback_fonts=(font_names)
       @fallback_fonts = font_names.is_a?(Array) ? font_names : [font_names]
     end
+
+    # @param [String] name
+    # @param [String] normal (required) Path for normal style font
+    # @param [String] bold Path for bold style font. Set :normal by default.
+    # @param [String] italic Path for italic style font. Set :normal by default.
+    # @param [String] bold_italic Path for bold+italic style font. Set :normal by default.
+    # @example
+    #   config.register_font('Foo Font',
+    #     normal: '/path/to/foo.ttf',
+    #     bold: '/path/to/foo_bold.ttf',
+    #     italic: '/path/to/foo_italic.ttf',
+    #     bold_italic: '/path/to/foo_bold_italic.ttf'
+    #   )
+    #
+    #   # For fonts that have no style, such as Japanese:
+    #   config.register_font('Bar Font', normal: '/path/to/bar.tlf')
+    #   => {
+    #     normal: '/path/to/bar.tlf',
+    #     bold: '/path/to/bar.tlf,'
+    #     italic: '/path/to/bar.tlf,'
+    #     bold_italic: '/path/to/bar.tlf,'
+    #   }
+    def register_font(name, normal:, bold: normal, italic: normal, bold_italic: normal)
+      @fonts[name] = {
+        normal: normal,
+        bold: bold,
+        italic: italic,
+        bold_italic: bold_italic
+      }
+    end
+
+    attr_reader :fonts
   end
 end

test/unit/test_config.rb

@@ -33,4 +33,46 @@ def test_fallback_fonts
     config.fallback_fonts.unshift 'Times New Roman'
     assert_equal config.fallback_fonts, ['Times New Roman', 'Helvetica', 'IPAMincho']
   end
+
+  def test_register_font
+    config = Thinreports::Configuration.new
+
+    assert_equal({}, config.fonts)
+
+    config.register_font('Foo',
+      normal: 'foo.ttf',
+      bold: 'foo_bold.ttf',
+      italic: 'foo_italic.ttf',
+      bold_italic: 'foo_bold_italic.ttf'
+    )
+    assert_equal({
+      normal: 'foo.ttf',
+      bold: 'foo_bold.ttf',
+      italic: 'foo_italic.ttf',
+      bold_italic: 'foo_bold_italic.ttf'
+    }, config.fonts['Foo'])
+
+    config.register_font('Bar', normal: 'bar.ttf')
+    assert_equal({
+      normal: 'bar.ttf',
+      bold: 'bar.ttf',
+      italic: 'bar.ttf',
+      bold_italic: 'bar.ttf'
+    }, config.fonts['Bar'])
+
+    assert_equal({
+      'Foo' => {
+        normal: 'foo.ttf',
+        bold: 'foo_bold.ttf',
+        italic: 'foo_italic.ttf',
+        bold_italic: 'foo_bold_italic.ttf'
+      },
+      'Bar' => {
+        normal: 'bar.ttf',
+        bold: 'bar.ttf',
+        italic: 'bar.ttf',
+        bold_italic: 'bar.ttf'
+      }
+    }, config.fonts)
+  end
 end