Fix TextStyle constructor

+# 1.3.12
+* Fix TextStyle constructor
+
 # 1.3.11
 * Update Readme
 

@@ -179,7 +179,7 @@ class RichText extends Widget {
         return true;
       }
 
-      final PdfFont font = style.paintFont.getFont(context);
+      final PdfFont font = style.font.getFont(context);
 
       final PdfFontMetrics space =
           font.stringMetrics(' ') * (style.fontSize * textScaleFactor);
@@ -322,7 +322,7 @@ class RichText extends Widget {
       }
 
       context.canvas.drawString(
-          currentStyle.paintFont.getFont(context),
+          currentStyle.font.getFont(context),
           currentStyle.fontSize * textScaleFactor,
           word.text,
           box.x + word.offset.x,

@@ -25,10 +25,11 @@ class TextStyle {
   const TextStyle({
     this.inherit = true,
     this.color,
-    this.font,
-    this.fontBold,
-    this.fontItalic,
-    this.fontBoldItalic,
+    Font font,
+    Font fontNormal,
+    Font fontBold,
+    Font fontItalic,
+    Font fontBoldItalic,
     this.fontSize,
     this.fontWeight,
     this.fontStyle,
@@ -45,12 +46,28 @@ class TextStyle {
         assert(inherit || letterSpacing != null),
         assert(inherit || wordSpacing != null),
         assert(inherit || lineSpacing != null),
-        assert(inherit || height != null);
+        assert(inherit || height != null),
+        fontNormal = fontNormal ??
+            (fontStyle != FontStyle.italic && fontWeight != FontWeight.bold
+                ? font
+                : null),
+        fontBold = fontBold ??
+            (fontStyle != FontStyle.italic && fontWeight == FontWeight.bold
+                ? font
+                : null),
+        fontItalic = fontItalic ??
+            (fontStyle == FontStyle.italic && fontWeight != FontWeight.bold
+                ? font
+                : null),
+        fontBoldItalic = fontBoldItalic ??
+            (fontStyle == FontStyle.italic && fontWeight == FontWeight.bold
+                ? font
+                : null);
 
   factory TextStyle.defaultStyle() {
     return TextStyle(
       color: PdfColors.black,
-      font: Font.helvetica(),
+      fontNormal: Font.helvetica(),
       fontBold: Font.helveticaBold(),
       fontItalic: Font.helveticaOblique(),
       fontBoldItalic: Font.helveticaBoldOblique(),
@@ -68,7 +85,7 @@ class TextStyle {
 
   final PdfColor color;
 
-  final Font font;
+  final Font fontNormal;
 
   final Font fontBold;
 
@@ -103,6 +120,7 @@ class TextStyle {
   TextStyle copyWith({
     PdfColor color,
     Font font,
+    Font fontNormal,
     Font fontBold,
     Font fontItalic,
     Font fontBoldItalic,
@@ -119,6 +137,7 @@ class TextStyle {
       inherit: inherit,
       color: color ?? this.color,
       font: font ?? this.font,
+      fontNormal: fontNormal ?? this.fontNormal,
       fontBold: fontBold ?? this.fontBold,
       fontItalic: fontItalic ?? this.fontItalic,
       fontBoldItalic: fontBoldItalic ?? this.fontBoldItalic,
@@ -138,6 +157,7 @@ class TextStyle {
   TextStyle apply({
     PdfColor color,
     Font font,
+    Font fontNormal,
     Font fontBold,
     Font fontItalic,
     Font fontBoldItalic,
@@ -169,6 +189,7 @@ class TextStyle {
       inherit: inherit,
       color: color ?? this.color,
       font: font ?? this.font,
+      fontNormal: fontNormal ?? this.fontNormal,
       fontBold: fontBold ?? this.fontBold,
       fontItalic: fontItalic ?? this.fontItalic,
       fontBoldItalic: fontBoldItalic ?? this.fontBoldItalic,
@@ -201,6 +222,8 @@ class TextStyle {
     return copyWith(
       color: other.color,
       font: other.font,
+      fontNormal: other.fontNormal,
+      fontBold: other.fontBold,
       fontItalic: other.fontItalic,
       fontBoldItalic: other.fontBoldItalic,
       fontSize: other.fontSize,
@@ -214,25 +237,32 @@ class TextStyle {
     );
   }
 
-  Font get paintFont {
-    if (fontWeight == FontWeight.normal) {
-      if (fontStyle == FontStyle.normal) {
-        return font;
+  @Deprecated('use font instead')
+  Font get paintFont => font;
+
+  Font get font {
+    if (fontWeight != FontWeight.bold) {
+      if (fontStyle != FontStyle.italic) {
+        // normal
+        return fontNormal ?? fontBold ?? fontItalic ?? fontBoldItalic;
       } else {
-        return fontItalic ?? font;
+        // italic
+        return fontItalic ?? fontNormal ?? fontBold ?? fontBoldItalic;
       }
     } else {
-      if (fontStyle == FontStyle.normal) {
-        return fontBold ?? font;
+      if (fontStyle != FontStyle.italic) {
+        // bold
+        return fontBold ?? fontNormal ?? fontItalic ?? fontBoldItalic;
       } else {
-        return fontBoldItalic ?? fontBold ?? fontItalic ?? font;
+        // bold + italic
+        return fontBoldItalic ?? fontBold ?? fontItalic ?? fontNormal;
       }
     }
   }
 
   @override
   String toString() =>
-      'TextStyle(color:$color font:$paintFont size:$fontSize weight:$fontWeight style:$fontStyle letterSpacing:$letterSpacing wordSpacing:$wordSpacing lineSpacing:$lineSpacing height:$height background:$background)';
+      'TextStyle(color:$color font:$font size:$fontSize weight:$fontWeight style:$fontStyle letterSpacing:$letterSpacing wordSpacing:$wordSpacing lineSpacing:$lineSpacing height:$height background:$background)';
 }
 
 @immutable

@@ -4,7 +4,7 @@ description: A pdf producer for Dart. It can create pdf files for both web or fl
 homepage: https://github.com/DavBfr/dart_pdf/tree/master/pdf
 repository: https://github.com/DavBfr/dart_pdf
 issue_tracker: https://github.com/DavBfr/dart_pdf/issues
-version: 1.3.11
+version: 1.3.12
 
 environment:
   sdk: ">=2.1.0 <3.0.0"

@@ -31,11 +31,13 @@ import 'widget_container_test.dart' as widget_container;
 import 'widget_table_test.dart' as widget_table;
 import 'widget_test.dart' as widget;
 import 'widget_text_test.dart' as widget_text;
+import 'widget_theme_test.dart' as widget_theme;
 
 void main() {
   annotations.main();
   colors.main();
   complex.main();
+  example.main();
   jpeg.main();
   metrics.main();
   minimal.main();
@@ -46,6 +48,6 @@ void main() {
   widget_container.main();
   widget_table.main();
   widget_text.main();
+  widget_theme.main();
   widget.main();
-  example.main();
 }

@@ -175,7 +175,7 @@ void main() {
                           text: 'Hello ',
                           style: Theme.of(context).defaultTextStyle,
                           children: <TextSpan>[
-                            const TextSpan(
+                            TextSpan(
                                 text: 'bold',
                                 style: TextStyle(
                                     fontWeight: FontWeight.bold,

+/*
+ * Copyright (C) 2017, David PHAM-VAN <dev.nfet.net@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import 'dart:io';
+import 'dart:typed_data';
+
+import 'package:pdf/pdf.dart';
+import 'package:test/test.dart';
+import 'package:pdf/widgets.dart';
+
+Document pdf;
+Font openSans;
+Font openSansBold;
+Font roboto;
+Font notoSans;
+Font genyomintw;
+
+Font loadFont(String filename) {
+  final Uint8List data = File(filename).readAsBytesSync();
+  return Font.ttf(data.buffer.asByteData());
+}
+
+void main() {
+  setUpAll(() {
+    Document.debug = true;
+    RichText.debug = true;
+
+    openSans = loadFont('open-sans.ttf');
+    openSansBold = loadFont('open-sans-bold.ttf');
+    roboto = loadFont('roboto.ttf');
+    notoSans = loadFont('noto-sans.ttf');
+    genyomintw = loadFont('genyomintw.ttf');
+
+    pdf = Document();
+  });
+
+  test('Theme FontStyle', () {
+    final TextStyle style = TextStyle(
+        font: roboto,
+        fontBold: openSansBold,
+        fontNormal: openSans,
+        fontItalic: notoSans,
+        fontBoldItalic: genyomintw,
+        fontWeight: FontWeight.bold,
+        fontSize: 20,
+        color: PdfColors.blue);
+
+    pdf.addPage(Page(
+      build: (Context context) => ListView(
+            children: <Widget>[
+              Text(
+                style.font.fontName,
+                style: style,
+              ),
+            ],
+          ),
+    ));
+  });
+
+  tearDownAll(() {
+    final File file = File('widgets-theme.pdf');
+    file.writeAsBytesSync(pdf.save());
+  });
+}