Checkpoint

scotusPdfView.py

@@ -0,0 +1,87 @@
+from PySide6.QtCore import QEvent, QObject, QPointF, QRect, QRectF, Qt
+from PySide6.QtGui import QColor, QMouseEvent, QPaintEvent, QPainter, QPen
+from PySide6.QtPdfWidgets import QPdfView
+from PySide6.QtWidgets import QApplication, QWidget
+
+def printParentHierarchy(obj: QObject, indent: int = 0):
+    if obj:
+        indentStr = '  ' * indent * 2
+        print(f"{indentStr}{obj.metaObject().className()}:{obj.objectName()}")
+        printParentHierarchy(obj.parent(), indent + 1)
+    return
+        
+class scotusPdfView(QPdfView):
+
+    drawing: bool
+    start_point: QPointF
+    end_point: QPointF
+    
+    def formatRect(self, rect: QRectF|QRect) -> str:
+        return f"({rect.left()},{rect.top()}):({rect.right()},{rect.bottom()})"
+    
+    def __init__(self, parent: QWidget) -> None:
+        self.drawing = False
+        super(scotusPdfView, self).__init__(parent)
+        print(self.viewport())
+        return
+
+    def paintEvent(self, event: QPaintEvent) -> None:
+        super(scotusPdfView,self).paintEvent(event)
+        if self.drawing:
+            page = self.pageNavigator().currentPage()
+            viewport = self.viewport()
+            painter = QPainter(viewport)
+            doc = self.document()
+            dpi = QApplication.primaryScreen().logicalDotsPerInch()
+            #
+            # XXX: Our mouse events are storing coordinates in the "self"
+            # coordinate system.  We need them in the viewport system
+            #
+
+            rect = QRectF(viewport.mapFrom(self, self.start_point),
+                          viewport.mapFrom(self, self.end_point))
+            redSolid = QPen(Qt.GlobalColor.red, 2, Qt.PenStyle.SolidLine)
+            blueDash = QPen(Qt.GlobalColor.blue, 2, Qt.PenStyle.DashLine)
+            greenDash = QPen(Qt.GlobalColor.green, 2, Qt.PenStyle.DashLine)
+            painter.setPen(redSolid)
+            painter.drawRect(rect) # Mouse drag box
+
+            selectRect = QRectF(rect.left()/dpi*72,
+                                rect.top()/dpi*72,
+                                rect.right()/dpi*72,
+                                rect.bottom()/dpi*72)
+            painter.setPen(blueDash)
+            selection = doc.getSelectionAtIndex(page, 10, 50)
+            selection = doc.getSelection(page, selectRect.topLeft(), selectRect.bottomRight())
+            bb = selection.boundingRectangle()
+            painter.drawRect(bb) # Selection bounding box
+            print(selection.text())
+            print()
+
+            painter.setPen(greenDash)
+            bb.setLeft(bb.left()/72*dpi)
+            bb.setTop(bb.top()/72*dpi)
+            bb.setRight(bb.right()/72*dpi)
+            bb.setBottom(bb.bottom()/72*dpi)
+            painter.drawRect(bb) # Selection translated into viewport coordinates?
+        return
+
+    def mousePressEvent(self, event: QMouseEvent) -> None:
+        if event.button() == Qt.MouseButton.LeftButton:
+            self.start_point = event.pos()
+            self.drawing = True
+        return
+    
+    def mouseMoveEvent(self, event: QMouseEvent) -> None:
+        if self.drawing:
+            pos = event.pos()
+            self.end_point = pos
+            viewport = self.viewport()
+            viewport.update()
+        return
+
+    def mouseReleaseEvent(self, event: QMouseEvent) -> None:
+        if event.button() == Qt.MouseButton.LeftButton:
+            self.drawing = False
+            self.viewport().update()
+        return