Add QTextMarkdownImporter

This provides the ability to read from a Markdown string or file into
a QTextDocument, such that the formatting will be recognized and can be
rendered.

- Add QTextDocument::setMarkdown(QString)
- Add QTextEdit::setMarkdown(QString)
- Add TextFormat::MarkdownText
- QWidgetTextControl::setContent() calls QTextDocument::setMarkdown()
  if that's the format

Fixes: QTBUG-72349
Change-Id: Ief2ad71bf840666c64145d58e9ca71d05fad5659
Reviewed-by: Lisandro Damián Nicanor Pérez Meyer <perezmeyer@gmail.com>
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/gui/text/text.pri b/src/gui/text/text.pri
index abe20abe02..b35a231747 100644
--- a/src/gui/text/text.pri
+++ b/src/gui/text/text.pri
@@ -97,6 +97,18 @@ qtConfig(textodfwriter) {
         text/qzip.cpp
 }
 
+qtConfig(textmarkdownreader) {
+    qtConfig(system-textmarkdownreader) {
+        QMAKE_USE += libmd4c
+    } else {
+        include($$PWD/../../3rdparty/md4c.pri)
+    }
+    HEADERS += \
+        text/qtextmarkdownimporter_p.h
+    SOURCES += \
+        text/qtextmarkdownimporter.cpp
+}
+
 qtConfig(cssparser) {
     HEADERS += \
         text/qcssparser_p.h