editor: support custom zoom delta

src/dialog/vsettingsdialog.cpp

@@ -546,6 +546,13 @@ VReadEditTab::VReadEditTab(QWidget *p_parent)
     connect(m_autoSave, &QCheckBox::stateChanged,
             this, &VReadEditTab::showTipsAboutAutoSave);
 
+    // Editor zoom delta.
+    m_editorZoomDeltaSpin = new QSpinBox();
+    m_editorZoomDeltaSpin->setToolTip(tr("Set the zoom delta of the editor font"));
+    m_editorZoomDeltaSpin->setMaximum(c_editorZoomDeltaMax);
+    m_editorZoomDeltaSpin->setMinimum(c_editorZoomDeltaMin);
+    m_editorZoomDeltaSpin->setSingleStep(1);
+
     QVBoxLayout *readLayout = new QVBoxLayout();
     readLayout->addLayout(zoomFactorLayout);
     readLayout->addWidget(m_flashAnchor);
@@ -554,6 +561,7 @@ VReadEditTab::VReadEditTab(QWidget *p_parent)
     QFormLayout *editLayout = new QFormLayout();
     editLayout->addRow(m_swapFile);
     editLayout->addRow(m_autoSave);
+    editLayout->addRow(tr("Editor zoom delta:"), m_editorZoomDeltaSpin);
     m_editBox->setLayout(editLayout);
 
     QVBoxLayout *mainLayout = new QVBoxLayout();
@@ -592,6 +600,10 @@ bool VReadEditTab::loadConfiguration()
         return false;
     }
 
+    if (!loadEditorZoomDelta()) {
+        return false;
+    }
+
     return true;
 }
 
@@ -613,6 +625,10 @@ bool VReadEditTab::saveConfiguration()
         return false;
     }
 
+    if (!saveEditorZoomDelta()) {
+        return false;
+    }
+
     return true;
 }
 
@@ -646,6 +662,18 @@ bool VReadEditTab::saveWebZoomFactor()
     return true;
 }
 
+bool VReadEditTab::loadEditorZoomDelta()
+{
+    m_editorZoomDeltaSpin->setValue(g_config->getEditorZoomDelta());
+    return true;
+}
+
+bool VReadEditTab::saveEditorZoomDelta()
+{
+    g_config->setEditorZoomDelta(m_editorZoomDeltaSpin->value());
+    return true;
+}
+
 bool VReadEditTab::loadFlashAnchor()
 {
     m_flashAnchor->setChecked(g_config->getEnableFlashAnchor());

src/dialog/vsettingsdialog.h

@@ -94,6 +94,9 @@ private:
     bool loadFlashAnchor();
     bool saveFlashAnchor();
 
+    bool loadEditorZoomDelta();
+    bool saveEditorZoomDelta();
+
     // Web zoom factor.
     QCheckBox *m_customWebZoom;
     QDoubleSpinBox *m_webZoomFactorSpin;
@@ -107,6 +110,9 @@ private:
     // Auto save.
     QCheckBox *m_autoSave;
 
+    // Editor zoom delta.
+    QSpinBox *m_editorZoomDeltaSpin;
+
     QGroupBox *m_readBox;
     QGroupBox *m_editBox;
 };

src/resources/vnote.ini

@@ -55,6 +55,9 @@ enable_graphviz=false
 ; -1 - calculate the factor
 web_zoom_factor=-1
 
+; Delta font size of the editor
+editor_zoom_delta=0
+
 ; Syntax highlight within code blocks in edit mode
 enable_code_block_highlight=true
 

src/vconfigmanager.cpp

@@ -130,6 +130,8 @@ void VConfigManager::initialize()
         qDebug() << "set WebZoomFactor to" << m_webZoomFactor;
     }
 
+    m_editorZoomDelta = getConfigFromSettings("global", "editor_zoom_delta").toInt();
+
     m_enableCodeBlockHighlight = getConfigFromSettings("global",
                                                        "enable_code_block_highlight").toBool();
 

src/vconfigmanager.h

@@ -228,6 +228,9 @@ public:
     void setWebZoomFactor(qreal p_factor);
     bool isCustomWebZoomFactor();
 
+    int getEditorZoomDelta() const;
+    void setEditorZoomDelta(int p_delta);
+
     const QString &getEditorCurrentLineBg() const;
 
     const QString &getEditorTrailingSpaceBg() const;
@@ -672,6 +675,9 @@ private:
     // Zoom factor of the QWebEngineView.
     qreal m_webZoomFactor;
 
+    // Editor zoom delta.
+    int m_editorZoomDelta;
+
     // Current line background color in editor.
     QString m_editorCurrentLineBg;
 
@@ -1449,6 +1455,21 @@ inline bool VConfigManager::isCustomWebZoomFactor()
     return factorFromIni > 0;
 }
 
+inline int VConfigManager::getEditorZoomDelta() const
+{
+    return m_editorZoomDelta;
+}
+
+inline void VConfigManager::setEditorZoomDelta(int p_delta)
+{
+    if (m_editorZoomDelta == p_delta) {
+        return;
+    }
+
+    m_editorZoomDelta = p_delta;
+    setConfigToSettings("global", "editor_zoom_delta", m_editorZoomDelta);
+}
+
 inline const QString &VConfigManager::getEditorCurrentLineBg() const
 {
     return m_editorCurrentLineBg;

src/vconstants.h

@@ -32,6 +32,9 @@ enum class OpenFileMode {Read = 0, Edit, Invalid };
 static const qreal c_webZoomFactorMax = 5;
 static const qreal c_webZoomFactorMin = 0.25;
 
+static const int c_editorZoomDeltaMax = 10;
+static const int c_editorZoomDeltaMin = -10;
+
 static const int c_tabSequenceBase = 1;
 
 // HTML and JS.

src/vmdtab.cpp

@@ -475,6 +475,13 @@ void VMdTab::setupMarkdownEditor()
     m_editor = new VMdEditor(m_file, m_document, m_mdConType, this);
     m_editor->setProperty("MainEditor", true);
     m_editor->setEditTab(this);
+    int delta = g_config->getEditorZoomDelta();
+    if (delta > 0) {
+        m_editor->zoomInW(delta);
+    } else if (delta < 0) {
+        m_editor->zoomOutW(-delta);
+    }
+
     connect(m_editor, &VMdEditor::headersChanged,
             this, &VMdTab::updateOutlineFromHeaders);
     connect(m_editor, SIGNAL(currentHeaderChanged(int)),