Explorer: add Up button to go up to parent directory

src/resources/icons/explore_root.svg

@@ -4,7 +4,7 @@
 	 viewBox="0 0 512 512" style="enable-background:new 0 0 512 512;" xml:space="preserve">
 <g>
 	<g>
-		<path d="M177.3,76.95v111c0,6.8,5.5,12.3,12.3,12.3h43.2v33.4h-165c-6.8,0-12.3,5.5-12.3,12.3v43.9H12.3
+		<path style="fill:#000000" d="M177.3,76.95v111c0,6.8,5.5,12.3,12.3,12.3h43.2v33.4h-165c-6.8,0-12.3,5.5-12.3,12.3v43.9H12.3
 			c-6.8,0-12.3,5.5-12.3,12.3v111c0,6.8,5.5,12.3,12.3,12.3h111c6.8,0,12.3-5.5,12.3-12.3v-111c0-6.8-5.5-12.3-12.3-12.3H80v-31.7
 			h152.7v31.7h-43.2c-6.8,0-12.3,5.5-12.3,12.3v111c0,6.8,5.5,12.3,12.3,12.3h111c6.8,0,12.3-5.5,12.3-12.3v-111
 			c0-6.8-5.5-12.3-12.3-12.3h-43.2v-31.7H410v31.7h-43.2c-6.8,0-12.3,5.5-12.3,12.3v111c0,6.8,5.5,12.3,12.3,12.3h111

src/resources/icons/up.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 16.2.1, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 width="512px" height="512px" viewBox="0 0 512 512" enable-background="new 0 0 512 512" xml:space="preserve">
+<g id="Icon_8_">
+	<g>
+		<path style="fill:#000000" d="M277.375,427V167.296l119.702,119.702L427,256L256,85L85,256l29.924,29.922l119.701-118.626V427H277.375z"/>
+	</g>
+</g>
+</svg>

src/vexplorer.cpp

@@ -62,6 +62,25 @@ void VExplorer::setupUI()
                 }
             });
 
+    m_upBtn = new QPushButton(VIconUtils::buttonIcon(":/resources/icons/up.svg"),
+                              "",
+                              this);
+    m_upBtn->setToolTip(tr("Up"));
+    m_upBtn->setProperty("FlatBtn", true);
+    connect(m_upBtn, &QPushButton::clicked,
+            this, [this]() {
+                if (checkIndex()) {
+                    QDir dir(m_entries[m_index].m_directory);
+                    if (dir.cdUp()) {
+                        int idx = addEntry(dir.absolutePath());
+                        updateDirectoryComboBox();
+                        if (idx != -1) {
+                            setCurrentEntry(idx);
+                        }
+                    }
+                }
+            });
+
     m_openLocationBtn = new QPushButton(VIconUtils::buttonIcon(":/resources/icons/open_location.svg"),
                                         "",
                                         this);
@@ -97,6 +116,7 @@ void VExplorer::setupUI()
     dirLayout->addWidget(dirLabel);
     dirLayout->addStretch();
     dirLayout->addWidget(m_openBtn);
+    dirLayout->addWidget(m_upBtn);
     dirLayout->addWidget(m_openLocationBtn);
     dirLayout->addWidget(m_starBtn);
     dirLayout->setContentsMargins(0, 0, 0, 0);
@@ -345,6 +365,7 @@ void VExplorer::handleEntryActivated(int p_idx)
     m_imgFolderEdit->setEnabled(valid);
 
     m_openLocationBtn->setEnabled(valid);
+    m_upBtn->setEnabled(valid);
     m_newFileBtn->setEnabled(valid);
     m_newDirBtn->setEnabled(valid);
 

src/vexplorer.h

@@ -82,6 +82,7 @@ private:
     int m_index;
 
     QPushButton *m_openBtn;
+    QPushButton *m_upBtn;
     QPushButton *m_openLocationBtn;
     QPushButton *m_starBtn;
     QComboBox *m_dirCB;

src/vnote.qrc

@@ -266,5 +266,6 @@
         <file>resources/icons/decrease_outline_level.svg</file>
         <file>resources/icons/increase_outline_level.svg</file>
         <file>utils/markdown-it/markdown-it-texmath.js</file>
+        <file>resources/icons/up.svg</file>
     </qresource>
 </RCC>