From ad9d8d7930388699ac6652ae8bc2a5f13f7aae1e Mon Sep 17 00:00:00 2001
From: miltolstoy <miltolstoy@gmail.com>
Date: Fri, 23 Oct 2020 20:25:44 +0300
Subject: [PATCH] logic: remember graph zoom level on restart (issue #801)
 (#1099)

---
 src/lib/settings/ApplicationSettings.cpp   | 10 ++++++++++
 src/lib/settings/ApplicationSettings.h     |  3 +++
 src/lib_gui/qt/graphics/QtGraphicsView.cpp |  6 +++++-
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/lib/settings/ApplicationSettings.cpp b/src/lib/settings/ApplicationSettings.cpp
index 1be13ccd7..be6fca3b9 100644
--- a/src/lib/settings/ApplicationSettings.cpp
+++ b/src/lib/settings/ApplicationSettings.cpp
@@ -678,6 +678,16 @@ void ApplicationSettings::setLastFilepickerLocation(const FilePath& path)
 	setValue<std::wstring>("user/last_filepicker_location", path.wstr());
 }
 
+float ApplicationSettings::getGraphZoomLevel() const
+{
+	return getValue<float>("user/graph_zoom_level", 1.0f);
+}
+
+void ApplicationSettings::setGraphZoomLevel(float zoomLevel)
+{
+	setValue<float>("user/graph_zoom_level", zoomLevel);
+}
+
 int ApplicationSettings::getPluginPort() const
 {
 	return getValue<int>("network/plugin_port", 6666);
diff --git a/src/lib/settings/ApplicationSettings.h b/src/lib/settings/ApplicationSettings.h
index bb51211db..4cc4d6546 100644
--- a/src/lib/settings/ApplicationSettings.h
+++ b/src/lib/settings/ApplicationSettings.h
@@ -181,6 +181,9 @@ class ApplicationSettings: public Settings
 	FilePath getLastFilepickerLocation() const;
 	void setLastFilepickerLocation(const FilePath& path);
 
+	float getGraphZoomLevel() const;
+	void setGraphZoomLevel(float zoomLevel);
+
 	// network
 	int getPluginPort() const;
 	void setPluginPort(const int pluginPort);
diff --git a/src/lib_gui/qt/graphics/QtGraphicsView.cpp b/src/lib_gui/qt/graphics/QtGraphicsView.cpp
index 18659f9ce..581d268bb 100644
--- a/src/lib_gui/qt/graphics/QtGraphicsView.cpp
+++ b/src/lib_gui/qt/graphics/QtGraphicsView.cpp
@@ -37,7 +37,7 @@
 QtGraphicsView::QtGraphicsView(GraphFocusHandler* focusHandler, QWidget* parent)
 	: QGraphicsView(parent)
 	, m_focusHandler(focusHandler)
-	, m_zoomFactor(1.0f)
+	, m_zoomFactor(ApplicationSettings::getInstance()->getGraphZoomLevel())
 	, m_appZoomFactor(1.0f)
 	, m_zoomInButtonSpeed(20.0f)
 	, m_zoomOutButtonSpeed(-20.0f)
@@ -835,6 +835,10 @@ void QtGraphicsView::setZoomFactor(float zoomFactor)
 {
 	m_zoomFactor = zoomFactor;
 
+	std::shared_ptr<ApplicationSettings> settings = ApplicationSettings::getInstance();
+	settings->setGraphZoomLevel(zoomFactor);
+	settings->save();
+
 	m_zoomState->setText(QString::number(int(m_zoomFactor * 100)) + "%");
 	updateTransform();