Move implementation files to src

@@ -14,30 +14,30 @@
  * limitations under the License.
  */
 
-export 'src/annotation.dart';
-export 'src/arabic.dart';
-export 'src/border.dart';
-export 'src/color.dart';
-export 'src/colors.dart';
-export 'src/document.dart';
-export 'src/document_parser.dart';
-export 'src/encryption.dart';
-export 'src/exif.dart';
-export 'src/font.dart';
-export 'src/font_metrics.dart';
-export 'src/function.dart';
-export 'src/graphic_state.dart';
-export 'src/graphics.dart';
-export 'src/image.dart';
-export 'src/info.dart';
-export 'src/outline.dart';
-export 'src/page.dart';
-export 'src/page_format.dart';
-export 'src/pattern.dart';
-export 'src/point.dart';
-export 'src/rect.dart';
-export 'src/shading.dart';
-export 'src/signature.dart';
-export 'src/smask.dart';
-export 'src/ttf_parser.dart';
-export 'src/ttffont.dart';
+export 'src/pdf/annotation.dart';
+export 'src/pdf/arabic.dart';
+export 'src/pdf/border.dart';
+export 'src/pdf/color.dart';
+export 'src/pdf/colors.dart';
+export 'src/pdf/document.dart';
+export 'src/pdf/document_parser.dart';
+export 'src/pdf/encryption.dart';
+export 'src/pdf/exif.dart';
+export 'src/pdf/font.dart';
+export 'src/pdf/font_metrics.dart';
+export 'src/pdf/function.dart';
+export 'src/pdf/graphic_state.dart';
+export 'src/pdf/graphics.dart';
+export 'src/pdf/image.dart';
+export 'src/pdf/info.dart';
+export 'src/pdf/outline.dart';
+export 'src/pdf/page.dart';
+export 'src/pdf/page_format.dart';
+export 'src/pdf/pattern.dart';
+export 'src/pdf/point.dart';
+export 'src/pdf/rect.dart';
+export 'src/pdf/shading.dart';
+export 'src/pdf/signature.dart';
+export 'src/pdf/smask.dart';
+export 'src/pdf/ttf_parser.dart';
+export 'src/pdf/ttffont.dart';

@@ -19,15 +19,15 @@ import 'dart:typed_data';
 
 import 'package:crypto/crypto.dart';
 
-import '../io/interface.dart'
-    if (dart.library.io) '../io/vm.dart'
-    if (dart.library.js) '../io/js.dart';
 import 'catalog.dart';
 import 'document_parser.dart';
 import 'encryption.dart';
 import 'font.dart';
 import 'graphic_state.dart';
 import 'info.dart';
+import 'io/interface.dart'
+    if (dart.library.io) '../io/vm.dart'
+    if (dart.library.js) '../io/js.dart';
 import 'names.dart';
 import 'object.dart';
 import 'outline.dart';

@@ -16,7 +16,7 @@
 
 import 'dart:typed_data';
 
-import 'package:pdf/src/document.dart';
+import 'document.dart';
 
 /// Base class for loading an existing PDF document.
 abstract class PdfDocumentParserBase {

@@ -15,9 +15,9 @@
  */
 
 import 'package:meta/meta.dart';
-import 'package:pdf/src/data_types.dart';
 import 'package:vector_math/vector_math_64.dart';
 
+import 'data_types.dart';
 import 'document.dart';
 import 'graphic_state.dart';
 import 'object.dart';

@@ -16,11 +16,11 @@
 
 import 'package:meta/meta.dart';
 import 'package:pdf/pdf.dart';
-import 'package:pdf/svg/painter.dart';
 import 'package:xml/xml.dart';
 
 import 'color.dart';
 import 'mask_path.dart';
+import 'painter.dart';
 import 'parser.dart';
 
 enum SvgTextAnchor { start, middle, end }

@@ -15,11 +15,11 @@
  */
 
 import 'package:pdf/pdf.dart';
-import 'package:pdf/svg/parser.dart';
 import 'package:pdf/widgets.dart';
 
 import 'brush.dart';
 import 'group.dart';
+import 'parser.dart';
 
 class SvgPainter {
   SvgPainter(

@@ -14,10 +14,11 @@
  * limitations under the License.
  */
 
-import 'package:pdf/svg/parser.dart';
 import 'package:vector_math/vector_math_64.dart';
 import 'package:xml/xml.dart';
 
+import 'parser.dart';
+
 class SvgTransform {
   const SvgTransform(this.matrix);
 

@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-import '../pdf.dart';
+import 'package:pdf/pdf.dart';
+
 import 'box_border.dart';
 import 'geometry.dart';
 

@@ -17,11 +17,11 @@
 import 'dart:math' as math;
 
 import 'package:pdf/pdf.dart';
-import 'package:pdf/svg.dart';
 
 import 'basic.dart';
 import 'geometry.dart';
 import 'image.dart';
+import 'svg.dart';
 import 'text.dart';
 import 'text_style.dart';
 import 'widget.dart';

@@ -20,8 +20,8 @@ import 'package:pdf/widgets.dart';
 import 'package:vector_math/vector_math_64.dart';
 import 'package:xml/xml.dart';
 
-import 'svg/painter.dart';
-import 'svg/parser.dart';
+import '../svg/painter.dart';
+import '../svg/parser.dart';
 
 class SvgImage extends Widget {
   factory SvgImage({

@@ -16,43 +16,43 @@
 
 export 'package:barcode/barcode.dart';
 
-export 'svg.dart';
-export 'widgets/annotations.dart';
-export 'widgets/barcode.dart';
-export 'widgets/basic.dart';
-export 'widgets/border_radius.dart';
-export 'widgets/box_border.dart';
-export 'widgets/chart/bar_chart.dart';
-export 'widgets/chart/chart.dart';
-export 'widgets/chart/grid_axis.dart';
-export 'widgets/chart/grid_cartesian.dart';
-export 'widgets/chart/legend.dart';
-export 'widgets/chart/line_chart.dart';
-export 'widgets/clip.dart';
-export 'widgets/container.dart';
-export 'widgets/content.dart';
-export 'widgets/decoration.dart';
-export 'widgets/document.dart';
-export 'widgets/flex.dart';
-export 'widgets/font.dart';
-export 'widgets/forms.dart';
-export 'widgets/geometry.dart';
-export 'widgets/grid_paper.dart';
-export 'widgets/grid_view.dart';
-export 'widgets/icon.dart';
-export 'widgets/image.dart';
-export 'widgets/image_provider.dart';
-export 'widgets/multi_page.dart';
-export 'widgets/page.dart';
-export 'widgets/page_theme.dart';
-export 'widgets/partitions.dart';
-export 'widgets/placeholders.dart';
-export 'widgets/progress.dart';
-export 'widgets/qrcode.dart';
-export 'widgets/stack.dart';
-export 'widgets/table.dart';
-export 'widgets/text.dart';
-export 'widgets/text_style.dart';
-export 'widgets/theme.dart';
-export 'widgets/widget.dart';
-export 'widgets/wrap.dart';
+export 'src/widgets/annotations.dart';
+export 'src/widgets/barcode.dart';
+export 'src/widgets/basic.dart';
+export 'src/widgets/border_radius.dart';
+export 'src/widgets/box_border.dart';
+export 'src/widgets/chart/bar_chart.dart';
+export 'src/widgets/chart/chart.dart';
+export 'src/widgets/chart/grid_axis.dart';
+export 'src/widgets/chart/grid_cartesian.dart';
+export 'src/widgets/chart/legend.dart';
+export 'src/widgets/chart/line_chart.dart';
+export 'src/widgets/clip.dart';
+export 'src/widgets/container.dart';
+export 'src/widgets/content.dart';
+export 'src/widgets/decoration.dart';
+export 'src/widgets/document.dart';
+export 'src/widgets/flex.dart';
+export 'src/widgets/font.dart';
+export 'src/widgets/forms.dart';
+export 'src/widgets/geometry.dart';
+export 'src/widgets/grid_paper.dart';
+export 'src/widgets/grid_view.dart';
+export 'src/widgets/icon.dart';
+export 'src/widgets/image.dart';
+export 'src/widgets/image_provider.dart';
+export 'src/widgets/multi_page.dart';
+export 'src/widgets/page.dart';
+export 'src/widgets/page_theme.dart';
+export 'src/widgets/partitions.dart';
+export 'src/widgets/placeholders.dart';
+export 'src/widgets/progress.dart';
+export 'src/widgets/qrcode.dart';
+export 'src/widgets/stack.dart';
+export 'src/widgets/svg.dart';
+export 'src/widgets/table.dart';
+export 'src/widgets/text.dart';
+export 'src/widgets/text_style.dart';
+export 'src/widgets/theme.dart';
+export 'src/widgets/widget.dart';
+export 'src/widgets/wrap.dart';

@@ -16,7 +16,7 @@
 
 import 'dart:typed_data';
 
-import 'package:pdf/src/data_types.dart';
+import 'package:pdf/src/pdf/data_types.dart';
 import 'package:test/test.dart';
 
 void main() {

@@ -17,7 +17,7 @@
 import 'dart:io';
 
 import 'package:pdf/pdf.dart';
-import 'package:pdf/src/ttf_writer.dart';
+import 'package:pdf/src/pdf/ttf_writer.dart';
 import 'package:test/test.dart';
 
 void printText(