remove text aliasing

Author: v0dro

README.md

@@ -18,6 +18,7 @@ Deadline: 15 January 2019
 ## Release v0.1.rc2
 Deadline: 26 February 2019
 
+* Integrate GR backend into existing API.
 * Support multiple Axes on the same Figure. 
 * Support atleast 3 new kinds of plots.
 

lib/rubyplot.rb

@@ -15,10 +15,8 @@
 require 'rubyplot/gr_wrapper'
 
 module Rubyplot
+  @@backend = Rubyplot::Backend::MagickWrapper.new
   def self.backend
-    b = ENV['RUBYPLOT_BACKEND']
-    return b.to_sym if %w[magick].include?(b)
-
-    :magick
+    @@backend
   end
 end

lib/rubyplot/artist/figure.rb

@@ -55,6 +55,7 @@ def add_subplots(nrows, ncols)
 
       def add_subplot(nrow, ncol)
         @subplots[nrow][ncol] = Rubyplot::Artist::Axes.new(self)
+        @subplots[nrow][ncol]
       end
 
       # Draw on a canvas and output to a file.

lib/rubyplot/artist/plot/multi_bars.rb

@@ -18,8 +18,8 @@ def initialize(*args, bar_plots:)
           @y_min = @bar_plots.map(&:y_min).min
           @x_max = @bar_plots.map(&:x_max).max
           @y_max = @bar_plots.map(&:y_max).max
-          configure_plot_geometry_data
-          configure_x_ticks
+          configure_plot_geometry_data!
+          configure_x_ticks!
         end
 
         def normalize
@@ -32,7 +32,7 @@ def draw
 
         private
 
-        def configure_plot_geometry_data
+        def configure_plot_geometry_data!
           @num_max_slots = @bar_plots.map(&:num_bars).max
           @max_slot_width = (@axes.x_axis.abs_x2 - @axes.x_axis.abs_x1).abs / @num_max_slots
           # FIXME: figure out a way to specify inter-box space somehow.
@@ -45,7 +45,7 @@ def configure_plot_geometry_data
           end
         end
 
-        def configure_x_ticks
+        def configure_x_ticks!
           @axes.num_x_ticks = @num_max_slots
           labels = @axes.x_ticks || Array.new(@num_max_slots, &:to_s)
           labels = labels[0...@axes.num_x_ticks] if labels.size != @axes.num_x_ticks

lib/rubyplot/backend/magick_wrapper.rb

@@ -18,7 +18,6 @@ def initialize
 
       # Height in pixels of particular text.
       # @param text [String] Text to be measured.
-
       def text_height(text, font, font_size)
         @draw.pointsize = font_size
         @draw.font = font if font
@@ -59,8 +58,8 @@ def draw_text(text,font_color:,font: nil,pointsize:,
         @draw.font_weight = font_weight
         @draw.gravity = GRAVITY_MEASURE[gravity] || Magick::ForgetGravity
         @draw.stroke stroke
-        @draw.stroke_antialias true
-        @draw.text_antialias = true
+        @draw.stroke_antialias false
+        @draw.text_antialias = false
         @draw.rotation = rotation if rotation
         @draw.annotate(@base_image, 0,0,x.to_i,y.to_i, text.gsub('%', '%%'))
         @draw.rotation = 90.0 if rotation

spec/axes_spec.rb

@@ -274,7 +274,7 @@
       it "adds bar plot with title margin" do
         @figure = Rubyplot::Figure.new
         axes = @figure.add_subplot 0,0
-        axes.bar! do |p|axes = 
+        axes.bar! do |p|
           p.data [5,12,9,6,6]
           p.label = "data"
           p.color = :green
@@ -316,7 +316,7 @@
         end
       end
 
-      it "plots both positive and negative values", focus: true do
+      it "plots both positive and negative values" do
         @figure = Rubyplot::Figure.new
         axes = @figure.add_subplot 0,0
         axes.bar! do |p|