Use pyproject.toml + uv_build

This replaces setup.py by a modern pyproject.toml using uv_build
backend.

Dependencies are being also managed by uv, so to install dependencies
and run the project one can execute:

```
uv sync
uv run pytest # optional
python -m avp
```

To build the both source and binary (wheel) distribution package run:
```
uv build
```

Uv can be installed with `pip install uv`.

The directory structure has been changed to reflect best practices.
- src/* -> src/avp/
- src/tests -> ../tests

1 files changed, 0 insertions, 58 deletions

diff --git a/src/gui/preview_win.py b/src/gui/preview_win.py
deleted file mode 100644
index f52f8a3..0000000
--- a/src/gui/preview_win.py
+++ /dev/null
@@ -1,58 +0,0 @@
-from PyQt6 import QtCore, QtGui, QtWidgets
-import logging
-
-log = logging.getLogger("AVP.Gui.PreviewWindow")
-
-
-class PreviewWindow(QtWidgets.QLabel):
-    """
-    Paints the preview QLabel in MainWindow and maintains the aspect ratio
-    when the window is resized.
-    """
-
-    def __init__(self, parent, img):
-        super().__init__()
-        self.parent = parent
-        # FIXME
-        # self.setFrameStyle(QtWidgets.QFrame.StyledPanel)
-        self.pixmap = QtGui.QPixmap(img)
-
-    def paintEvent(self, event):
-        size = self.size()
-        painter = QtGui.QPainter(self)
-        point = QtCore.QPoint(0, 0)
-        scaledPix = self.pixmap.scaled(
-            size,
-            QtCore.Qt.AspectRatioMode.KeepAspectRatio,
-            transformMode=QtCore.Qt.TransformationMode.SmoothTransformation,
-        )
-
-        # start painting the label from left upper corner
-        point.setX(int((size.width() - scaledPix.width()) / 2))
-        point.setY(int((size.height() - scaledPix.height()) / 2))
-        painter.drawPixmap(point, scaledPix)
-
-    def changePixmap(self, img):
-        self.pixmap = QtGui.QPixmap(img)
-        self.repaint()
-
-    def mousePressEvent(self, event):
-        if self.parent.encoding:
-            return
-
-        i = self.parent.listWidget_componentList.currentRow()
-        if i >= 0:
-            component = self.parent.core.selectedComponents[i]
-            if not hasattr(component, "previewClickEvent"):
-                return
-            qpoint = event.position().toPoint()
-            pos = (qpoint.x(), qpoint.y())
-            size = (self.width(), self.height())
-            butt = event.button()
-            log.info("Click event for #%s: %s button %s" % (i, pos, butt))
-            component.previewClickEvent(pos, size, butt)
-
-    @QtCore.pyqtSlot(str)
-    def threadError(self, msg):
-        self.parent.showMessage(msg=msg, icon="Critical", parent=self)
-        log.info("%", repr(self.parent))