double click on a tab to close it

Add configuration double_click_close_tab.

src/resources/vnote.ini

@@ -122,6 +122,9 @@ confirm_images_clean_up=true
 ; Confirm before reloading folder from disk
 confirm_reload_folder=true
 
+; Whether double click on a tab to close it
+double_click_close_tab=true
+
 [web]
 ; Location and configuration for Mathjax
 mathjax_javascript=https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js?config=TeX-MML-AM_CHTML

src/vconfigmanager.cpp

@@ -219,6 +219,9 @@ void VConfigManager::initialize()
 
     m_mathjaxJavascript = getConfigFromSettings("web",
                                                 "mathjax_javascript").toString();
+
+    m_doubleClickCloseTab = getConfigFromSettings("global",
+                                                  "double_click_close_tab").toBool();
 }
 
 void VConfigManager::readPredefinedColorsFromSettings()

src/vconfigmanager.h

@@ -281,6 +281,8 @@ public:
 
     const QString &getMathjaxJavascript() const;
 
+    bool getDoubleClickCloseTab() const;
+
     // Return the configured key sequence of @p_operation.
     // Return empty if there is no corresponding config.
     QString getShortcutKeySequence(const QString &p_operation) const;
@@ -567,6 +569,9 @@ private:
     // Location and configuration for Mathjax.
     QString m_mathjaxJavascript;
 
+    // Whether double click on a tab to close it.
+    bool m_doubleClickCloseTab;
+
     // The name of the config file in each directory, obsolete.
     // Use c_dirConfigFile instead.
     static const QString c_obsoleteDirConfigFile;
@@ -1488,4 +1493,9 @@ inline const QString &VConfigManager::getMathjaxJavascript() const
     return m_mathjaxJavascript;
 }
 
+inline bool VConfigManager::getDoubleClickCloseTab() const
+{
+    return m_doubleClickCloseTab;
+}
+
 #endif // VCONFIGMANAGER_H

src/veditwindow.cpp

@@ -11,8 +11,10 @@
 #include "vmdtab.h"
 #include "vhtmltab.h"
 #include "vfilelist.h"
+#include "vconfigmanager.h"
 
 extern VNote *g_vnote;
+extern VConfigManager *g_config;
 
 VEditWindow::VEditWindow(VNote *vnote, VEditArea *editArea, QWidget *parent)
     : QTabWidget(parent), vnote(vnote), m_editArea(editArea),
@@ -38,6 +40,14 @@ VEditWindow::VEditWindow(VNote *vnote, VEditArea *editArea, QWidget *parent)
             this, &VEditWindow::closeTab);
     connect(this, &VEditWindow::tabBarClicked,
             this, &VEditWindow::handleTabbarClicked);
+
+    connect(this, &VEditWindow::tabBarDoubleClicked,
+            this, [this](int p_index) {
+                if (p_index != -1 && g_config->getDoubleClickCloseTab()) {
+                    closeTab(p_index);
+                }
+            });
+
     connect(this, &VEditWindow::currentChanged,
             this, &VEditWindow::handleCurrentIndexChanged);
     connect(this, &VEditWindow::customContextMenuRequested,
@@ -548,6 +558,7 @@ void VEditWindow::handleCurrentIndexChanged(int p_index)
     if (wid && (wid == m_curTabWidget)) {
         return;
     }
+
     m_lastTabWidget = m_curTabWidget;
     m_curTabWidget = wid;
 }