Optimized file access

gpxsee.pro

@@ -162,7 +162,8 @@ HEADERS += src/common/config.h \
     src/map/rmap.h \
     src/map/calibrationpoint.h \
     src/map/color.h \
-    src/data/exifparser.h
+    src/data/exifparser.h \
+    src/data/imageinfo.h
 SOURCES += src/main.cpp \
     src/common/coordinates.cpp \
     src/common/rectc.cpp \

src/GUI/tooltip.cpp

@@ -9,32 +9,26 @@ void ToolTip::insert(const QString &key, const QString &value)
 	_list.append(KV(key, value));
 }
 
-QString ToolTip::toString()
+QString ToolTip::toString() const
 {
 	QString html;
 
-	if (!_img.isNull()) {
-		QImageReader r(_img);
-		QSize size(r.size());
-
-		if (size.isValid()) {
-			int width, height;
-
-			if (size.width() > size.height()) {
-				width = qMin(size.width(), THUMBNAIL_MAX_SIZE);
-				qreal ratio = (qreal)size.width() / (qreal)size.height();
-				height = (int)(width / ratio);
-			} else {
-				height = qMin(size.height(), THUMBNAIL_MAX_SIZE);
-				qreal ratio = (qreal)size.height() / (qreal)size.width();
-				width = (int)(height / ratio);
-			}
-
-			html += "<div align=\"center\">";
-			html += QString("<img src=\"file:%0\" width=\"%1\" height=\"%2\"/>")
-			  .arg(_img, QString::number(width), QString::number(height));
-			html += "</div>";
+	if (_img.isValid()) {
+		int width, height;
+		if (_img.size().width() > _img.size().height()) {
+			width = qMin(_img.size().width(), THUMBNAIL_MAX_SIZE);
+			qreal ratio = _img.size().width() / (qreal)_img.size().height();
+			height = (int)(width / ratio);
+		} else {
+			height = qMin(_img.size().height(), THUMBNAIL_MAX_SIZE);
+			qreal ratio = _img.size().height() / (qreal)_img.size().width();
+			width = (int)(height / ratio);
 		}
+
+		html += "<div align=\"center\">";
+		html += QString("<img src=\"file:%0\" width=\"%1\" height=\"%2\"/>")
+		  .arg(_img.path(), QString::number(width), QString::number(height));
+		html += "</div>";
 	}
 
 	if (!_list.isEmpty()) {

src/GUI/tooltip.h

@@ -4,17 +4,18 @@
 #include <QString>
 #include <QList>
 #include "common/kv.h"
+#include "data/imageinfo.h"
 
 class ToolTip
 {
 public:
 	void insert(const QString &key, const QString &value);
-	void setImage(const QString &img) {_img = img;}
-	QString toString();
+	void setImage(const ImageInfo &image) {_img = image;}
+	QString toString() const;
 
 private:
 	QList<KV> _list;
-	QString _img;
+	ImageInfo _img;
 };
 
 #endif // TOOLTIP_H

src/data/exifparser.cpp

@@ -1,5 +1,6 @@
 #include <QDataStream>
 #include <QFileInfo>
+#include <QImageReader>
 #include "common/tifffile.h"
 #include "exifparser.h"
 
@@ -200,9 +201,12 @@ bool EXIFParser::parseTIFF(QFile *file, QVector<Waypoint> &waypoints)
 		return false;
 	}
 
+	file->reset();
+	ImageInfo img(file->fileName(), QImageReader(file).size());
+
 	Waypoint wp(c);
 	wp.setName(QFileInfo(file->fileName()).baseName());
-	wp.setImage(file->fileName());
+	wp.setImage(img);
 	wp.setElevation(altitude(tiff, GPSIFD.value(GPSAltitude),
 	  GPSIFD.value(GPSAltitudeRef)));
 	wp.setTimestamp(QDateTime(QDate::fromString(text(tiff,

src/data/imageinfo.h

@@ -0,0 +1,24 @@
+#ifndef IMAGEINFO_H
+#define IMAGEINFO_H
+
+#include <QString>
+#include <QSize>
+
+class ImageInfo
+{
+public:
+	ImageInfo() {}
+	ImageInfo(const QString &path, const QSize &size)
+	  : _path(path), _size(size) {}
+
+	const QString &path() const {return _path;}
+	const QSize &size() const {return _size;}
+
+	bool isValid() const {return _size.isValid() && !_path.isEmpty();}
+
+private:
+	QString _path;
+	QSize _size;
+};
+
+#endif // IMAGEINFO_H

src/data/waypoint.h

@@ -6,6 +6,7 @@
 #include <QHash>
 #include <QDebug>
 #include "common/coordinates.h"
+#include "imageinfo.h"
 
 class Waypoint
 {
@@ -17,7 +18,7 @@ public:
 	const Coordinates &coordinates() const {return _coordinates;}
 	const QString &name() const {return _name;}
 	const QString &description() const {return _description;}
-	const QString &image() const {return _image;}
+	const ImageInfo &image() const {return _image;}
 	const QDateTime &timestamp() const {return _timestamp;}
 	qreal elevation() const {return _elevation;}
 
@@ -28,7 +29,7 @@ public:
 	  {_description = description;}
 	void setTimestamp(const QDateTime &timestamp) {_timestamp = timestamp;}
 	void setElevation(qreal elevation) {_elevation = elevation;}
-	void setImage(const QString &image) {_image = image;}
+	void setImage(const ImageInfo &image) {_image = image;}
 
 	bool hasElevation() const {return !std::isnan(_elevation);}
 
@@ -40,7 +41,7 @@ private:
 	Coordinates _coordinates;
 	QString _name;
 	QString _description;
-	QString _image;
+	ImageInfo _image;
 	QDateTime _timestamp;
 	qreal _elevation;
 };