add zoom

1 files changed, 20 insertions, 0 deletions

diff --git a/reader.js b/reader.js
index 15d6d8f..d16f595 100755
--- a/reader.js
+++ b/reader.js
@@ -432,6 +432,26 @@ $(document).ready(function () {
 		model.fitToWidth(!model.fitToWidth());
 	});
 
+	ipcRenderer.on("zoom-in", (event, args) => {
+		const reader = $("#reader");
+		const zoom = parseInt(parseFloat((reader.css("zoom")) || 1) * 100);
+
+		if (zoom < 200)
+			reader.css("zoom", (zoom + 20) + "%");
+	});
+
+	ipcRenderer.on("zoom-out", (event, args) => {
+		const reader = $("#reader");
+		const zoom = parseInt(parseFloat((reader.css("zoom")) || 1) * 100);
+
+		if (zoom > 25)
+			reader.css("zoom", (zoom - 20) + "%");
+	});
+
+	ipcRenderer.on("zoom-reset", (event, args) => {
+		$("#reader").css("zoom", "100%");
+	});
+
 	ipcRenderer.on("single-column", (event, args) => {
 		model.singleColumn(!model.singleColumn());
 	});