Respect DPI settings in text, add pt unit

This has the compatibility impact that all font sizes should be divided by 3 to maintain their same sizes.

Based on PR #225. Thanks @felixleong!!

Conflicts:
	bin/squib
	lib/squib/graphics/text.rb

spec/api/api_units_spec.rb

@@ -14,6 +14,16 @@ describe Squib::Deck do
     end
   end
 
+  context '#pt' do
+    it 'converts inches properly' do
+      expect(deck.points(1)).to eq 4.166666666666667
+    end
+
+    it 'handles strings too' do
+      expect(deck.points('1')).to eq 4.166666666666667
+    end
+  end
+
   context '#cm' do
     it 'converts inches properly' do
       expect(deck.cm(1)).to eq 118.1102361

spec/args/unit_conversion_spec.rb

@@ -15,6 +15,11 @@ describe Squib::Args::UnitConversion do
     expect(subject.parse('1 in')).to eq(300)
   end
 
+  it 'does pt' do
+    expect(subject.parse('1pt')).to eq(4.166666666666667)
+    expect(subject.parse('1pt  ')).to eq(4.166666666666667)
+  end
+
   it 'does cm' do
     expect(subject.parse('1cm')).to eq(118.1102361)
     expect(subject.parse('1cm  ')).to eq(118.1102361)

spec/data/samples/autoscale_font/_autoscale_font.rb.txt

@@ -60,7 +60,7 @@ cairo: set_source_color(["black"])
 cairo: translate([10, 10])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([32768])
+pango font: size=([10915.84])
 pango: font_description=([MockDouble])
 pango: text=(["Short & Big"])
 pango: width=([286720])
@@ -82,7 +82,7 @@ cairo: set_source_color(["black"])
 cairo: translate([10, 10])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([18432])
+pango font: size=([6144])
 pango: font_description=([MockDouble])
 pango: text=(["Medium Length & Size"])
 pango: width=([286720])
@@ -104,7 +104,7 @@ cairo: set_source_color(["black"])
 cairo: translate([10, 10])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([12288])
+pango font: size=([4096])
 pango: font_description=([MockDouble])
 pango: text=(["Super duper long string here, therefore a smaller font."])
 pango: width=([286720])

spec/data/samples/text/_embed_text.rb.txt

@@ -348,7 +348,7 @@ cairo: set_source_color(["black"])
 cairo: translate([0, 0])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([18432])
+pango font: size=([6144])
 pango: font_description=([MockDouble])
 pango: text=(["Take 1 :tool: and gain 2 :health:."])
 pango: width=([184320])
@@ -372,7 +372,7 @@ cairo: set_source_color(["black"])
 cairo: translate([0, 0])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([26624])
+pango font: size=([8704.0])
 pango: font_description=([MockDouble])
 pango: text=(["Take 1 :tool: and gain 2 :health:."])
 pango: width=([184320])
@@ -396,7 +396,7 @@ cairo: set_source_color(["black"])
 cairo: translate([0, 0])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([35840])
+pango font: size=([11776.0])
 pango: font_description=([MockDouble])
 pango: text=(["Take 1 :tool: and gain 2 :health:."])
 pango: width=([184320])

spec/data/samples/text/_text_options.rb.txt

@@ -282,7 +282,7 @@ cairo: set_source_color(["black"])
 cairo: translate([65, 350])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([16384])
+pango font: size=([5120])
 pango: font_description=([MockDouble])
 pango: text=(["Font string sizes can be overridden per card."])
 pango: wrap=([#<Pango::WrapMode word-char>])
@@ -298,7 +298,7 @@ cairo: set_source_color(["black"])
 cairo: translate([65, 350])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([20480])
+pango font: size=([7168])
 pango: font_description=([MockDouble])
 pango: text=(["Font string sizes can be overridden per card."])
 pango: wrap=([#<Pango::WrapMode word-char>])
@@ -314,7 +314,7 @@ cairo: set_source_color(["black"])
 cairo: translate([65, 350])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([24576])
+pango font: size=([8192])
 pango: font_description=([MockDouble])
 pango: text=(["Font string sizes can be overridden per card."])
 pango: wrap=([#<Pango::WrapMode word-char>])
@@ -393,7 +393,7 @@ cairo: set_source_color(["black"])
 cairo: translate([65, 550])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([16384])
+pango font: size=([5120])
 pango: font_description=([MockDouble])
 pango: text=(["Ink extent return value"])
 pango: wrap=([#<Pango::WrapMode word-char>])
@@ -409,7 +409,7 @@ cairo: set_source_color(["black"])
 cairo: translate([65, 550])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([20480])
+pango font: size=([7168])
 pango: font_description=([MockDouble])
 pango: text=(["Ink extent return value"])
 pango: wrap=([#<Pango::WrapMode word-char>])
@@ -425,7 +425,7 @@ cairo: set_source_color(["black"])
 cairo: translate([65, 550])
 cairo: rotate([0])
 cairo: move_to([0, 0])
-pango font: size=([24576])
+pango font: size=([8192])
 pango: font_description=([MockDouble])
 pango: text=(["Ink extent return value"])
 pango: wrap=([#<Pango::WrapMode word-char>])

spec/spec_helper.rb

@@ -115,6 +115,7 @@ def mock_cairo(strio)
   allow(pango).to receive(:attributes).and_return(nil)
   allow(pango_cxt).to receive(:set_shape_renderer)
   allow(pango_cxt).to receive(:font_options=)
+  allow(pango_cxt).to receive(:resolution=)
   allow(iter).to receive(:next_char!).and_return(false)
   allow(iter).to receive(:char_extents).and_return(Pango::Rectangle.new(5, 5, 5, 5))
   allow(iter).to receive(:index).and_return(1000)