add markdown dialect (WIP) & add strikethrough and underline font styles

src/graphics/ui/elements/Label.cpp

@@ -6,6 +6,7 @@
 #include "graphics/core/Font.hpp"
 #include "assets/Assets.hpp"
 #include "util/stringutil.hpp"
+#include "../markdown.hpp"
 
 using namespace gui;
 
@@ -80,11 +81,16 @@ glm::vec2 Label::calcSize() {
     );
 }
 
-void Label::setText(const std::wstring& text) {
+void Label::setText(std::wstring text) {
+    if (isMarkdown()) {
+        auto [processedText, styles] = markdown::process(text, true);
+        text = std::move(processedText);
+        setStyles(std::move(styles));
+    }
     if (text == this->text && !cache.resetFlag) {
         return;
     }
-    this->text = text;
+    this->text = std::move(text);
     cache.update(this->text, multiline, textWrap);
 
     if (cache.font && autoresize) {
@@ -242,6 +248,15 @@ bool Label::isTextWrapping() const {
     return textWrap;
 }
 
+void Label::setMarkdown(bool flag) {
+    markdown = flag;
+    setText(text);
+}
+
+bool Label::isMarkdown() const {
+    return markdown;    
+}
+
 void Label::setStyles(std::unique_ptr<FontStylesScheme> styles) {
     this->styles = std::move(styles);
 }

src/graphics/ui/elements/Label.hpp

@@ -53,6 +53,9 @@ namespace gui {
         /// @brief Auto resize label to fit text
         bool autoresize = false;
 
+        /// @brief Enable text markdown
+        bool markdown = false;
+
         std::unique_ptr<FontStylesScheme> styles;
     public:
         Label(const std::string& text, std::string fontName="normal");
@@ -60,7 +63,7 @@ namespace gui {
 
         virtual ~Label();
 
-        virtual void setText(const std::wstring& text);
+        virtual void setText(std::wstring text);
         const std::wstring& getText() const;
 
         virtual void setFontName(std::string name);
@@ -113,6 +116,9 @@ namespace gui {
         virtual void setTextWrapping(bool flag);
         virtual bool isTextWrapping() const;
 
+        virtual void setMarkdown(bool flag);
+        virtual bool isMarkdown() const;
+
         virtual void setStyles(std::unique_ptr<FontStylesScheme> styles);
     };
 }

src/graphics/ui/elements/TextBox.cpp

@@ -13,6 +13,7 @@
 #include "util/stringutil.hpp"
 #include "window/Events.hpp"
 #include "window/Window.hpp"
+#include "../markdown.hpp"
 
 using namespace gui;
 
@@ -191,7 +192,18 @@ void TextBox::drawBackground(const DrawContext& pctx, const Assets&) {
 
 void TextBox::refreshLabel() {
     label->setColor(textColor * glm::vec4(input.empty() ? 0.5f : 1.0f));
-    label->setText(input.empty() && !hint.empty() ? hint : getText());
+
+    const auto& displayText = input.empty() && !hint.empty() ? hint : getText();
+    if (markdown) {
+        auto [processedText, styles] = markdown::process(displayText, !focused);
+        label->setText(std::move(processedText));
+        label->setStyles(std::move(styles));
+    } else {
+        label->setText(displayText);
+        if (syntax.empty()) {
+            label->setStyles(nullptr);
+        }
+    }
     
     if (showLineNumbers) {
         if (lineNumbersLabel->getLinesNumber() != label->getLinesNumber()) {
@@ -846,3 +858,11 @@ void TextBox::setSyntax(const std::string& lang) {
         refreshSyntax();
     }
 }
+
+void TextBox::setMarkdown(bool flag) {
+    markdown = flag;
+}
+
+bool TextBox::isMarkdown() const {
+    return markdown;
+}

src/graphics/ui/elements/TextBox.hpp

@@ -56,6 +56,7 @@ namespace gui {
         bool editable = true;
         bool autoresize = false;
         bool showLineNumbers = false;
+        bool markdown = false;
 
         std::string syntax;
 
@@ -227,5 +228,8 @@ namespace gui {
         virtual void setOnDownPressed(const runnable &callback);
 
         virtual void setSyntax(const std::string& lang);
+
+        virtual void setMarkdown(bool flag);
+        virtual bool isMarkdown() const;
     };
 }