From 53c92055a629b8d969430c45c379425cd898f629 Mon Sep 17 00:00:00 2001
From: Krad <kradchen123@163.com>
Date: Thu, 2 Jun 2022 14:01:16 +0800
Subject: [PATCH] Preview error handle

---
 src/ShimLib/ShimLib.c                 | 8 ++++++++
 src/components/DateSlidePickerBox.cpp | 2 +-
 src/device/DeviceManager.cpp          | 4 +++-
 src/forms/scan/ScanFormWidget.cpp     | 6 ++++--
 4 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/ShimLib/ShimLib.c b/src/ShimLib/ShimLib.c
index 8d9ec31..d178d27 100644
--- a/src/ShimLib/ShimLib.c
+++ b/src/ShimLib/ShimLib.c
@@ -120,7 +120,15 @@ const size_t Col = 140;
 
 const char* FRAME_FILE_PATH_1 = "./img1_v2.bin";
 const char* FRAME_FILE_PATH_2 = "./pre_image.bin";
+
+int previewCount = 0;
 const char* GetPreviewData() {
+    previewCount++;
+    if (previewCount>3){
+        status = READY;
+        innerCallback("22222");
+        return NULL;
+    }
 	FILE* file;
 	preivew_change_flag++;
 	preivew_change_flag = preivew_change_flag % 2;
diff --git a/src/components/DateSlidePickerBox.cpp b/src/components/DateSlidePickerBox.cpp
index 89a06db..7e21a73 100644
--- a/src/components/DateSlidePickerBox.cpp
+++ b/src/components/DateSlidePickerBox.cpp
@@ -6,7 +6,7 @@
 #include <QHBoxLayout>
 #include <QLabel>
 #include <QDate>
-DateSlidePickerBox::DateSlidePickerBox(QWidget *parent) {
+DateSlidePickerBox::DateSlidePickerBox(QWidget *parent):QWidget(parent) {
     layout = new QHBoxLayout(this);
     myear = new SlidePickerBox(this);
     QStringList centry;
diff --git a/src/device/DeviceManager.cpp b/src/device/DeviceManager.cpp
index d3a7061..01c98ae 100644
--- a/src/device/DeviceManager.cpp
+++ b/src/device/DeviceManager.cpp
@@ -164,7 +164,9 @@ void DeviceManager::initDevice() {
 			if (inf.status == SCANNING) {
 				qDebug() << "Preview data reader read start!";
 				const char* data = GetPreviewData();
-				if (!data)continue;
+				if (!data){
+				    continue;
+				}
 				qDebug() << "Preview data reader read end!";
 				QByteArray bytes = QByteArray::fromRawData(data, 140 * 140);
 				//double check
diff --git a/src/forms/scan/ScanFormWidget.cpp b/src/forms/scan/ScanFormWidget.cpp
index 7ec8902..9f3d9e3 100644
--- a/src/forms/scan/ScanFormWidget.cpp
+++ b/src/forms/scan/ScanFormWidget.cpp
@@ -258,9 +258,11 @@ ScanFormWidget::ScanFormWidget(QWidget* parent) : TabFormWidget(parent) {
 		lbl_e2->setText(tr("some settings\n\nparameters\n"));
 		});
 
+    connect(EventCenter::Default(), &EventCenter::DeviceErrorRaise, [=](QObject* parent, QObject* msg){
+        setPreviewing(false);
+    });
 
-
-	previewfunc = [=](bool val)->void {
+    previewfunc = [=](bool val)->void {
 		viewer->setVisible(val);
 		btnPreview->setCheckable(val);
 		btnPreview->setChecked(val);