add preference option to select default and text font

tools/lammps-gui/CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.16)
 
-project(lammps-gui VERSION 1.1.2 LANGUAGES CXX)
+project(lammps-gui VERSION 1.1.3 LANGUAGES CXX)
 
 set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTOMOC ON)

tools/lammps-gui/highlighter.cpp

@@ -213,8 +213,8 @@ void Highlighter::highlightBlock(const QString &text)
     auto undo = QRegularExpression("^(unfix|uncompute|undump)\\s+(\\w+)").match(text);
     bool do_style = true;
     bool do_force = true;
-    bool do_defs = true;
-    bool do_undo = true;
+    bool do_defs  = true;
+    bool do_undo  = true;
     for (const HighlightingRule &rule : qAsConst(highlightingRules)) {
         QRegularExpressionMatchIterator matchIterator = rule.pattern.globalMatch(text);
         while (matchIterator.hasNext()) {
@@ -226,17 +226,17 @@ void Highlighter::highlightBlock(const QString &text)
                 setFormat(style.capturedStart(3), style.capturedLength(3), stringFormat);
                 setFormat(style.capturedStart(4), style.capturedLength(4), runFormat);
                 do_style = false;
-            // special treatment for force styles styles
+                // special treatment for force styles styles
             } else if (force.hasMatch() && do_force) {
                 setFormat(force.capturedStart(1), force.capturedLength(1), particleFormat);
                 setFormat(force.capturedStart(2), force.capturedLength(2), runFormat);
                 do_force = false;
-            // special treatment for undo commands
+                // special treatment for undo commands
             } else if (undo.hasMatch() && do_undo) {
                 setFormat(undo.capturedStart(1), undo.capturedLength(1), defineFormat);
                 setFormat(undo.capturedStart(2), undo.capturedLength(2), stringFormat);
                 do_undo = false;
-            // special treatment for some definitions
+                // special treatment for some definitions
             } else if (defs.hasMatch() && do_defs) {
                 setFormat(defs.capturedStart(1), defs.capturedLength(1), particleFormat);
                 setFormat(defs.capturedStart(2), defs.capturedLength(2), stringFormat);

tools/lammps-gui/lammpsgui.cpp

@@ -143,9 +143,14 @@ LammpsGui::LammpsGui(QWidget *parent, const char *filename) :
 
     QFont all_font("Arial", -1);
     all_font.setStyleHint(QFont::SansSerif, QFont::PreferOutline);
+    all_font.fromString(settings.value("allfont", all_font.toString()).toString());
+    settings.setValue("allfont", all_font.toString());
     QApplication::setFont(all_font);
-    QFont text_font("Monospace");
+
+    QFont text_font("Monospace", -1);
     text_font.setStyleHint(QFont::Monospace, QFont::PreferOutline);
+    text_font.fromString(settings.value("textfont", text_font.toString()).toString());
+    settings.setValue("textfont", text_font.toString());
     ui->textEdit->document()->setDefaultFont(text_font);
     ui->textEdit->setMinimumSize(600, 400);
 

tools/lammps-gui/lammpsgui.h

@@ -24,6 +24,8 @@
 
 // forward declarations
 
+class GeneralTab;
+
 QT_BEGIN_NAMESPACE
 namespace Ui {
 class LammpsGui;
@@ -45,6 +47,7 @@ class LammpsGui : public QMainWindow {
     Q_OBJECT
 
     friend class CodeEditor;
+    friend class GeneralTab;
 
 public:
     LammpsGui(QWidget *parent = nullptr, const char *filename = nullptr);
@@ -81,8 +84,10 @@ private slots:
     void preferences();
     void defaults();
 
-private:
+protected:
     Ui::LammpsGui *ui;
+
+private:
     Highlighter *highlighter;
     StdCapture *capturer;
     QLabel *status;

tools/lammps-gui/preferences.cpp

@@ -13,14 +13,18 @@
 
 #include "preferences.h"
 
+#include "lammpsgui.h"
 #include "lammpswrapper.h"
+#include "ui_lammpsgui.h"
 
+#include <QApplication>
 #include <QCheckBox>
 #include <QCoreApplication>
 #include <QDialogButtonBox>
 #include <QDir>
 #include <QDoubleValidator>
 #include <QFileDialog>
+#include <QFontDialog>
 #include <QGroupBox>
 #include <QHBoxLayout>
 #include <QIntValidator>
@@ -121,6 +125,7 @@ void Preferences::accept()
     if (box) settings->setValue("viewlog", box->isChecked());
     box = tabWidget->findChild<QCheckBox *>("viewchart");
     if (box) settings->setValue("viewchart", box->isChecked());
+
     QDialog::accept();
 }
 
@@ -158,6 +163,7 @@ GeneralTab::GeneralTab(QSettings *_settings, LammpsWrapper *_lammps, QWidget *pa
     tmplayout->addWidget(tmplabel);
     tmplayout->addWidget(tmpedit);
     tmplayout->addWidget(tmpbrowse);
+    connect(tmpbrowse, &QPushButton::released, this, &GeneralTab::newtmpfolder);
 #endif
 
 #if defined(LAMMPS_GUI_USE_PLUGIN)
@@ -172,6 +178,15 @@ GeneralTab::GeneralTab(QSettings *_settings, LammpsWrapper *_lammps, QWidget *pa
 
     connect(pluginbrowse, &QPushButton::released, this, &GeneralTab::pluginpath);
 #endif
+
+    auto *fontlayout  = new QHBoxLayout;
+    auto *getallfont  = new QPushButton("Select Default Font...");
+    auto *gettextfont = new QPushButton("Select Text Font...");
+    fontlayout->addWidget(getallfont);
+    fontlayout->addWidget(gettextfont);
+    connect(getallfont, &QPushButton::released, this, &GeneralTab::newallfont);
+    connect(gettextfont, &QPushButton::released, this, &GeneralTab::newtextfont);
+
     layout->addWidget(echo);
     layout->addWidget(cite);
     layout->addWidget(logv);
@@ -185,10 +200,49 @@ GeneralTab::GeneralTab(QSettings *_settings, LammpsWrapper *_lammps, QWidget *pa
     layout->addWidget(pluginlabel);
     layout->addLayout(pluginlayout);
 #endif
+    layout->addLayout(fontlayout);
     layout->addStretch(1);
     setLayout(layout);
 }
 
+void GeneralTab::updatefonts(const QFont &all, const QFont &text)
+{
+    LammpsGui *main;
+    for (QWidget *widget : QApplication::topLevelWidgets())
+        if (widget->objectName() == "LammpsGui") main = dynamic_cast<LammpsGui *>(widget);
+
+    QApplication::setFont(all);
+    main->ui->textEdit->document()->setDefaultFont(text);
+}
+
+void GeneralTab::newallfont()
+{
+    QSettings settings;
+    QFont all, text;
+    all.fromString(settings.value("allfont", "").toString());
+    text.fromString(settings.value("textfont", "").toString());
+
+    bool ok    = false;
+    QFont font = QFontDialog::getFont(&ok, all, this, QString("Select Default Font"));
+    if (ok) updatefonts(font, text);
+
+    settings.setValue("allfont", font.toString());
+}
+
+void GeneralTab::newtextfont()
+{
+    QSettings settings;
+    QFont all, text;
+    all.fromString(settings.value("allfont", "").toString());
+    text.fromString(settings.value("textfont", "").toString());
+
+    bool ok    = false;
+    QFont font = QFontDialog::getFont(&ok, text, this, QString("Select Text Font"));
+    if (ok) updatefonts(all, font);
+
+    settings.setValue("textfont", font.toString());
+}
+
 void GeneralTab::newtmpfolder()
 {
     QLineEdit *field = findChild<QLineEdit *>("tmpedit");

tools/lammps-gui/preferences.h

@@ -17,6 +17,7 @@
 #include <QDialog>
 
 class QDialogButtonBox;
+class QFont;
 class QSettings;
 class QTabWidget;
 class LammpsWrapper;
@@ -49,8 +50,11 @@ public:
 private slots:
     void pluginpath();
     void newtmpfolder();
+    void newallfont();
+    void newtextfont();
 
 private:
+    void updatefonts(const QFont &all, const QFont &text);
     QSettings *settings;
     LammpsWrapper *lammps;
 };