Support relative paths in image API functions, combine projectDir calls

include/project.h

@@ -210,6 +210,7 @@ public:
     QString findMetatileLabelsTileset(QString label);
 
     void setImportExportPath(QString filename);
+    static QString getExistingFilepath(QString filepath);
     void applyParsedLimits();
 
     static int getNumTilesPrimary();

include/scripting.h

@@ -55,7 +55,7 @@ public:
     static QJSValue version(QList<int> versionNums);
     static QJSValue dimensions(int width, int height);
     static QJSValue position(int x, int y);
-    static QImage getImage(QString filepath);
+    static const QImage * getImage(const QString &filepath, bool useCache);
     static QJSValue dialogInput(QJSValue input, bool selectedOk);
 
 private:

src/core/events.cpp

@@ -151,10 +151,8 @@ void Event::setIcons() {
         }
 
         // Try to load custom icon
-        QFileInfo info(customIconPath);
-        if (info.isRelative()) {
-            customIconPath = QDir::cleanPath(projectConfig.getProjectDir() + QDir::separator() + customIconPath);
-        }
+        QString validPath = Project::getExistingFilepath(customIconPath);
+        if (!validPath.isEmpty()) customIconPath = validPath; // Otherwise allow it to fail with the original path
         const QPixmap customIcon = QPixmap(customIconPath);
         if (customIcon.isNull()) {
             // Custom icon failed to load, use the default icon.

src/editor.cpp

@@ -2278,22 +2278,20 @@ void Editor::setCollisionTabSpinBoxes(uint16_t collision, uint16_t elevation) {
 
 // Custom collision graphics may be provided by the user.
 void Editor::setCollisionGraphics() {
-    QString customPath = projectConfig.getCollisionSheetPath();
+    QString filepath = projectConfig.getCollisionSheetPath();
 
     QImage imgSheet;
-    if (customPath.isEmpty()) {
+    if (filepath.isEmpty()) {
         // No custom collision image specified, use the default.
         imgSheet = this->defaultCollisionImgSheet;
     } else {
         // Try to load custom collision image
-        QFileInfo info(customPath);
-        if (info.isRelative()) {
-            customPath = QDir::cleanPath(projectConfig.getProjectDir() + QDir::separator() + customPath);
-        }
-        imgSheet = QImage(customPath);
+        QString validPath = Project::getExistingFilepath(filepath);
+        if (!validPath.isEmpty()) filepath = validPath; // Otherwise allow it to fail with the original path
+        imgSheet = QImage(filepath);
         if (imgSheet.isNull()) {
             // Custom collision image failed to load, use default
-            logWarn(QString("Failed to load custom collision image '%1', using default.").arg(customPath));
+            logWarn(QString("Failed to load custom collision image '%1', using default.").arg(filepath));
             imgSheet = this->defaultCollisionImgSheet;
         }
     }

src/project.cpp

@@ -2747,6 +2747,20 @@ void Project::setImportExportPath(QString filename)
     this->importExportPath = QFileInfo(filename).absolutePath();
 }
 
+// If the provided filepath is an absolute path to an existing file, return filepath.
+// If not, and the provided filepath is a relative path from the project dir to an existing file, return the relative path.
+// Otherwise return empty string.
+QString Project::getExistingFilepath(QString filepath) {
+    if (filepath.isEmpty() || QFile::exists(filepath))
+        return filepath;
+
+    filepath = QDir::cleanPath(projectConfig.getProjectDir() + QDir::separator() + filepath);
+    if (QFile::exists(filepath))
+        return filepath;
+
+    return QString();
+}
+
 // The values of some config fields can limit the values of other config fields
 // (for example, metatile attributes size limits the metatile attribute masks).
 // Others depend on information in the project (for example the default metatile ID

src/scriptapi/scripting.cpp

@@ -48,10 +48,10 @@ Scripting::Scripting(MainWindow *mainWindow) {
 
 void Scripting::loadModules(QStringList moduleFiles) {
     for (QString filepath : moduleFiles) {
+        QString validPath = Project::getExistingFilepath(filepath);
+        if (!validPath.isEmpty()) filepath = validPath; // Otherwise allow it to fail with the original path
+
         QJSValue module = this->engine->importModule(filepath);
-        if (module.isError()) {
-            QString relativePath = QDir::cleanPath(userConfig.getProjectDir() + QDir::separator() + filepath);
-            module = this->engine->importModule(relativePath);
         if (tryErrorJS(module)) {
             QMessageBox messageBox(this->mainWindow);
             messageBox.setText("Failed to load script");
@@ -62,8 +62,6 @@ void Scripting::loadModules(QStringList moduleFiles) {
             messageBox.exec();
             continue;
         }
-        }
-
         logInfo(QString("Successfully loaded custom script file '%1'").arg(filepath));
         this->modules.append(module);
     }
@@ -377,11 +375,22 @@ QJSEngine *Scripting::getEngine() {
     return instance->engine;
 }
 
-QImage Scripting::getImage(QString filepath) {
-    const QImage * image = instance->imageCache.value(filepath, nullptr);
-    if (!image) {
+const QImage * Scripting::getImage(const QString &inputFilepath, bool useCache) {
+    if (inputFilepath.isEmpty())
+        return nullptr;
+
+    const QImage * image;
+    if (useCache) {
+        // Try to retrieve image from the cache
+        image = instance->imageCache.value(inputFilepath, nullptr);
+        if (image) return image;
+    }
+
+    const QString filepath = Project::getExistingFilepath(inputFilepath);
+    if (filepath.isEmpty())
+        return nullptr;
+
     image = new QImage(filepath);
-        instance->imageCache.insert(filepath, image);
-    }
-    return QImage(*image);
+    instance->imageCache.insert(inputFilepath, image);
+    return image;
 }

src/ui/encountertabledelegates.cpp

@@ -21,9 +21,7 @@ void SpeciesComboDelegate::paint(QPainter *painter, const QStyleOptionViewItem &
         if (path.isEmpty()) {
             path = this->project->speciesToIconPath.value(species);
         } else {
-            QFileInfo info(path);
-            if (info.isRelative())
-                path = QDir::cleanPath(projectConfig.getProjectDir() + QDir::separator() + path);
+            path = Project::getExistingFilepath(path);
         }
 
         QImage img(path);

src/ui/overlay.cpp

@@ -202,11 +202,12 @@ bool Overlay::addPath(QList<int> xCoords, QList<int> yCoords, QString borderColo
 }
 
 bool Overlay::addImage(int x, int y, QString filepath, bool useCache, int width, int height, int xOffset, int yOffset, qreal hScale, qreal vScale, QList<QRgb> palette, bool setTransparency) {
-    QImage image = useCache ? Scripting::getImage(filepath) : QImage(filepath);
-    if (image.isNull()) {
+    const QImage * baseImage = Scripting::getImage(filepath, useCache);
+    if (!baseImage || baseImage->isNull()) {
         logError(QString("Failed to load image '%1'").arg(filepath));
         return false;
     }
+    QImage image = *baseImage;
 
     int fullWidth = image.width();
     int fullHeight = image.height();

src/ui/prefab.cpp

@@ -28,14 +28,13 @@ void Prefab::loadPrefabs() {
 
     ParseUtil parser;
     QJsonDocument prefabDoc;
-    QFileInfo info(filepath);
-    if (info.isRelative()) {
-        filepath = QDir::cleanPath(projectConfig.getProjectDir() + QDir::separator() + filepath);
-    }
-    if (!QFile::exists(filepath) || !parser.tryParseJsonFile(&prefabDoc, filepath)) {
+
+    QString validPath = Project::getExistingFilepath(filepath);
+    if (validPath.isEmpty() || !parser.tryParseJsonFile(&prefabDoc, validPath)) {
         logError(QString("Failed to read prefab data from %1").arg(filepath));
         return;
     }
+    filepath = validPath;
 
     QJsonArray prefabs = prefabDoc.array();
     if (prefabs.size() == 0) {