Add bin and edit workflow

bin/gems/pdf-reader-2.14.1/lib/pdf/reader/rectangle.rb

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+# coding: utf-8
+# typed: strict
+# frozen_string_literal: true
+
+module PDF
+  class Reader
+
+    # PDFs represent rectangles all over the place. They're 4 element arrays, like this:
+    #
+    #     [A, B, C, D]
+    #
+    # Four element arrays are yucky to work with though, so here's a class that's better.
+    # Initialize it with the 4 elements, and get utility functions (width, height, etc)
+    # for free.
+    #
+    # By convention the first two elements are x1, y1, the co-ords for the bottom left corner
+    # of the rectangle. The third and fourth elements are x2, y2, the co-ords for the top left
+    # corner of the rectangle. It's valid for the alternative corners to be used though, so
+    # we don't assume which is which.
+    #
+    class Rectangle
+
+      attr_reader :bottom_left, :bottom_right, :top_left, :top_right
+
+      def initialize(x1, y1, x2, y2)
+        set_corners(x1, y1, x2, y2)
+      end
+
+      def self.from_array(arr)
+        if arr.size != 4
+          raise ArgumentError, "Only 4-element Arrays can be converted to a Rectangle"
+        end
+
+        PDF::Reader::Rectangle.new(
+          arr[0].to_f,
+          arr[1].to_f,
+          arr[2].to_f,
+          arr[3].to_f,
+        )
+      end
+
+      def ==(other)
+        to_a == other.to_a
+      end
+
+      def height
+        top_right.y - bottom_right.y
+      end
+
+      def width
+        bottom_right.x - bottom_left.x
+      end
+
+      def contains?(point)
+        point.x >= bottom_left.x && point.x <= top_right.x &&
+          point.y >= bottom_left.y && point.y <= top_right.y
+      end
+
+      # A pdf-style 4-number array
+      def to_a
+        [
+          bottom_left.x,
+          bottom_left.y,
+          top_right.x,
+          top_right.y,
+        ]
+      end
+
+      def apply_rotation(degrees)
+        return if degrees != 90 && degrees != 180 && degrees != 270
+
+        if degrees == 90
+          new_x1 = bottom_left.x
+          new_y1 = bottom_left.y - width
+          new_x2 = bottom_left.x + height
+          new_y2 = bottom_left.y
+        elsif degrees == 180
+          new_x1 = bottom_left.x - width
+          new_y1 = bottom_left.y - height
+          new_x2 = bottom_left.x
+          new_y2 = bottom_left.y
+        elsif degrees == 270
+          new_x1 = bottom_left.x - height
+          new_y1 = bottom_left.y
+          new_x2 = bottom_left.x
+          new_y2 = bottom_left.y + width
+        end
+        set_corners(new_x1 || 0, new_y1 || 0, new_x2 || 0, new_y2 || 0)
+      end
+
+      private
+
+      def set_corners(x1, y1, x2, y2)
+        @bottom_left = PDF::Reader::Point.new(
+          [x1, x2].min,
+          [y1, y2].min,
+        )
+        @bottom_right = PDF::Reader::Point.new(
+          [x1, x2].max,
+          [y1, y2].min,
+        )
+        @top_left = PDF::Reader::Point.new(
+          [x1, x2].min,
+          [y1, y2].max,
+        )
+        @top_right = PDF::Reader::Point.new(
+          [x1, x2].max,
+          [y1, y2].max,
+        )
+      end
+    end
+  end
+end