From d6b686cf26e8dfed4a74fec165244203cc04247e Mon Sep 17 00:00:00 2001
From: Attila Nagy <gyanta@gmail.com>
Date: Sun, 22 Jan 2017 03:23:20 -0500
Subject: [PATCH] zoom in-out

---
 src/browser/actions/application.js          | 26 +++++++++++-
 src/browser/services/application-control.js | 17 +++++++-
 src/browser/services/ipc-dispatcher.js      |  5 ++-
 src/node/index.js                           | 46 ++++++++++++++++++++-
 4 files changed, 90 insertions(+), 4 deletions(-)

diff --git a/src/browser/actions/application.js b/src/browser/actions/application.js
index fabab521..efdf6fe0 100644
--- a/src/browser/actions/application.js
+++ b/src/browser/actions/application.js
@@ -57,6 +57,27 @@ function quitAndInstallUpdates() {
   };
 }
 
+function zoomIn() {
+  return function (dispatch) {
+    return applicationControl.zoomIn().then(function () {
+        }).catch(error => dispatch(errorCaught(error)));
+  };
+}
+
+function zoomOut() {
+  return function (dispatch) {
+    return applicationControl.zoomOut().then(function () {
+        }).catch(error => dispatch(errorCaught(error)));
+  };
+}
+
+function zoomToDefault() {
+  return function (dispatch) {
+    return applicationControl.zoomToDefault().then(function () {
+        }).catch(error => dispatch(errorCaught(error)));
+  };
+}
+
 export function errorCaught(error) {
   /* eslint no-console: 0 */
   console.error(error);
@@ -75,5 +96,8 @@ export default {
   showStartupWindow,
   quit,
   quitAndInstallUpdates,
-  toggleDevTools
+  toggleDevTools,
+  zoomIn,
+  zoomOut,
+  zoomToDefault
 };
diff --git a/src/browser/services/application-control.js b/src/browser/services/application-control.js
index 8b9a9a10..82520420 100644
--- a/src/browser/services/application-control.js
+++ b/src/browser/services/application-control.js
@@ -102,6 +102,18 @@ function showStartupWindow() {
   return api.send('showStartupWindow');
 }
 
+function zoomIn() {
+  return api.send('zoomIn');
+}
+
+function zoomOut() {
+  return api.send('zoomOut');
+}
+
+function zoomToDefault() {
+  return api.send('zoomToDefault');
+}
+
 export default {
   checkForUpdates,
   createWindow,
@@ -110,5 +122,8 @@ export default {
   surveyTabs,
   toggleDevTools,
   quitAndInstall,
-  quit
+  quit,
+  zoomIn,
+  zoomOut,
+  zoomToDefault
 };
diff --git a/src/browser/services/ipc-dispatcher.js b/src/browser/services/ipc-dispatcher.js
index 25cc9fd4..3f64ff3c 100644
--- a/src/browser/services/ipc-dispatcher.js
+++ b/src/browser/services/ipc-dispatcher.js
@@ -29,7 +29,10 @@ const dispatchMap = {
     FOCUS_ACTIVE_TERMINAL: () => freeTabGroupActions.focusFirstTabByType('document-terminal-viewer'),
     FOCUS_NEWEST_PLOT: () => freeTabGroupActions.focusNewestPlot(),
     TERMINAL_INTERRUPT: () => kernelActions.interrupt(),
-    TERMINAL_RESTART: () => kernelActions.restart()
+    TERMINAL_RESTART: () => kernelActions.restart(),
+    ZOOM_IN: () => applicationActions.zoomIn(),
+    ZOOM_OUT: () => applicationActions.zoomOut(),
+    ZOOM_TO_DEFAULT: () => applicationActions.zoomToDefault()
   },
   detectVariables = _.debounce(function (dispatch) {
     dispatch(kernelActions.detectKernelVariables());
diff --git a/src/node/index.js b/src/node/index.js
index 512592a8..cb71bfc4 100644
--- a/src/node/index.js
+++ b/src/node/index.js
@@ -797,6 +797,47 @@ function onToggleFullScreen() {
   });
 }
 
+/**
+ * Increases zoom
+ * @returns {Promise}
+ */
+function onZoomIn() {
+  const window = browserWindows.getFocusedWindow() || this;
+
+  return bluebird.try(function () {
+    window.webContents.getZoomLevel(function (zoomLevel){
+      window.webContents.setZoomLevel(zoomLevel + 1);
+    });
+  });
+}
+
+/**
+ * Decreases zoom
+ * @returns {Promise}
+ */
+function onZoomOut() {
+  const window = browserWindows.getFocusedWindow() || this;
+
+  return bluebird.try(function () {
+    window.webContents.getZoomLevel(function (zoomLevel){
+      window.webContents.setZoomLevel(zoomLevel - 1);
+    });
+  });
+}
+
+/**
+ * Zooms to the default level
+ * @returns {Promise}
+ */
+function onZoomToDefault() {
+  const window = browserWindows.getFocusedWindow() || this;
+
+  return bluebird.try(function () {
+    window.webContents.setZoomLevel(0);
+  });
+}
+
+
 /**
  * @param {string} name
  * @param {object} options
@@ -918,7 +959,10 @@ function attachIpcMainEvents() {
     onSaveDialog,
     onToggleDevTools,
     onToggleFullScreen,
-    onKillKernelInstance
+    onKillKernelInstance,
+    onZoomIn,
+    onZoomOut,
+    onZoomToDefault
   ]);
 }