From 95fd0f881cb4af02569b9a29c6157a8e97bdb74b Mon Sep 17 00:00:00 2001
From: Gary Wang <wzc782970009@gmail.com>
Date: Sun, 1 Nov 2020 13:01:36 +0800
Subject: [PATCH] fix: should tell user if image read failed

---
 graphicsview.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/graphicsview.cpp b/graphicsview.cpp
index af7bcab..b3d3d97 100644
--- a/graphicsview.cpp
+++ b/graphicsview.cpp
@@ -51,8 +51,15 @@ void GraphicsView::showFileFromUrl(const QUrl &url, bool doRequestGallery)
         // QImage::Format imageFormat = imageReader.imageFormat();
         if (imageReader.format().isEmpty()) {
             showText(tr("File is not a valid image"));
+        } else if (!imageReader.supportsAnimation() && !imageReader.canRead()) {
+            showText(tr("Image data is invalid or currently unsupported"));
         } else {
-            showImage(QPixmap::fromImageReader(&imageReader));
+            const QPixmap & pixmap = QPixmap::fromImageReader(&imageReader);
+            if (pixmap.isNull()) {
+                showText(tr("Image data is invalid or currently unsupported"));
+            } else {
+                showImage(pixmap);
+            }
         }
     }