add markdown parsing + latex + tree-sitter highlighting for codeblocks in llm responses

Plugins/ZShell/Llm/mathtext.hpp

@@ -0,0 +1,72 @@
+#pragma once
+
+#include <QColor>
+#include <QImage>
+#include <QObject>
+#include <QString>
+#include <QUrl>
+#include <QtQml>
+
+#include <jkqtmathtext/jkqtmathtext.h>
+
+namespace ZShell::llm {
+
+// QML wrapper around JKQTMathText (JKQtPlotter's LaTeX renderer).
+//
+// Parses a display-math string and renders it into a transparent
+// QImage at the given device pixel ratio. QML displays the image
+// (scaling it to the bubble width when needed) and falls back to the
+// raw LaTeX when parsing fails.
+class LlmMathText : public QObject {
+	Q_OBJECT
+	QML_ELEMENT
+
+	Q_PROPERTY(QString latex READ latex WRITE setLatex NOTIFY changed)
+	Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY changed)
+	Q_PROPERTY(double fontPointSize READ fontPointSize WRITE setFontPointSize NOTIFY changed)
+	Q_PROPERTY(qreal devicePixelRatio READ devicePixelRatio WRITE setDevicePixelRatio NOTIFY changed)
+	Q_PROPERTY(QImage image READ image NOTIFY changed)
+	// data: URL of the rendered equation; usable directly as
+	// Image.source (a raw QImage is not).
+	Q_PROPERTY(QUrl imageUrl READ imageUrl NOTIFY changed)
+	// Logical (CSS pixel) size of the rendered equation.
+	Q_PROPERTY(qreal width READ width NOTIFY changed)
+	Q_PROPERTY(qreal height READ height NOTIFY changed)
+	Q_PROPERTY(bool ok READ ok NOTIFY changed)
+
+	public:
+	explicit LlmMathText(QObject* parent = nullptr);
+
+	[[nodiscard]] QString latex() const { return m_latex; }
+	void setLatex(const QString& value);
+	[[nodiscard]] QColor color() const { return m_color; }
+	void setColor(const QColor& value);
+	[[nodiscard]] double fontPointSize() const { return m_fontPointSize; }
+	void setFontPointSize(double value);
+	[[nodiscard]] qreal devicePixelRatio() const { return m_devicePixelRatio; }
+	void setDevicePixelRatio(qreal value);
+	[[nodiscard]] QImage image() const { return m_image; }
+	[[nodiscard]] QUrl imageUrl() const { return m_imageUrl; }
+	[[nodiscard]] qreal width() const { return m_width; }
+	[[nodiscard]] qreal height() const { return m_height; }
+	[[nodiscard]] bool ok() const { return m_ok; }
+
+	Q_SIGNALS:
+	void changed();
+
+	private:
+	void reRender();
+
+	JKQTMathText m_renderer;
+	QString m_latex;
+	QColor m_color;
+	double m_fontPointSize = 12.0;
+	qreal m_devicePixelRatio = 1.0;
+	QImage m_image;
+	QUrl m_imageUrl;
+	qreal m_width = 0;
+	qreal m_height = 0;
+	bool m_ok = false;
+};
+
+} // namespace ZShell::llm