Mercurial Repositories > eric / file diff

--- a/eric7/HelpViewer/HelpViewerImpl_qtb.py	Fri Oct 15 20:08:41 2021 +0200
+++ b/eric7/HelpViewer/HelpViewerImpl_qtb.py	Fri Oct 15 20:09:38 2021 +0200
@@ -7,7 +7,7 @@
 Module implementing the QTextBrowser based help viewer class.
 """
 
-from PyQt6.QtCore import Qt, QByteArray, QUrl
+from PyQt6.QtCore import Qt, QByteArray, QUrl, QEvent
 from PyQt6.QtGui import QDesktopServices,  QImage
 from PyQt6.QtWidgets import QTextBrowser
 
@@ -33,6 +33,8 @@
         self.__zoomCount = 0
         
         self.sourceChanged.connect(self.titleChanged)
+        
+        self.grabGesture(Qt.GestureType.PinchGesture)
     
     def setUrl(self, url):
         """
@@ -153,6 +155,18 @@
             self.zoomOut()
             self.zoomChanged.emit()
     
+    def setScale(self, scale):
+        """
+        Public method to set the zoom level.
+        
+        @param scale zoom level to set
+        @type int
+        """
+        if -5 <= scale <= 10:
+            self.zoomOut(scale)
+            self.__zoomCount = scale
+            self.zoomChanged.emit()
+    
     def resetScale(self):
         """
         Public method to reset the zoom level.
@@ -205,5 +219,78 @@
         else:
             QTextBrowser.wheelEvent(self, evt)
     
-    # TODO: implement context menu 
+    def keyPressEvent(self, evt):
+        """
+        Public method to handle key press events.
+        
+        @param evt reference to the key event
+        @type QKeyEvent
+        """
+        if evt.key() == Qt.Key.Key_ZoomIn:
+            self.scaleUp()
+            evt.accept()
+        elif evt.key() == Qt.Key.Key_ZoomOut:
+            self.scaleDown()
+            evt.accept()
+        elif evt.key() == Qt.Key.Key_Plus:
+            if evt.modifiers() & Qt.KeyboardModifier.ControlModifier:
+                self.scaleUp()
+                evt.accept()
+        elif evt.key() == Qt.Key.Key_Minus:
+            if evt.modifiers() & Qt.KeyboardModifier.ControlModifier:
+                self.scaleDown()
+                evt.accept()
+        elif evt.key() == Qt.Key.Key_0:
+            if evt.modifiers() & Qt.KeyboardModifier.ControlModifier:
+                self.resetScale()
+                evt.accept()
+        elif evt.key() == Qt.Key.Key_Backspace:
+            self.backward()
+            evt.accept()
+    
+    def event(self, evt):
+        """
+        Public method handling events.
+        
+        @param evt reference to the event
+        @type QEvent
+        @return flag indicating the event was handled
+        @rtype bool
+        """
+        if evt.type() == QEvent.Type.Gesture:
+            self.gestureEvent(evt)    
+            return True
+        
+        return super().event(evt)
+    
+    def gestureEvent(self, evt):
+        """
+        Protected method handling gesture events.
+        
+        @param evt reference to the gesture event
+        @type QGestureEvent
+        """
+        pinch = evt.gesture(Qt.GestureType.PinchGesture)
+        if pinch:
+            if pinch.state() == Qt.GestureState.GestureStarted:
+                zoom = (self.getZoom() + 6) / 10.0
+                pinch.setTotalScaleFactor(zoom)
+            elif pinch.state() == Qt.GestureState.GestureUpdated:
+                zoom = int(pinch.totalScaleFactor() * 10) - 6
+                if zoom <= -5:
+                    zoom = -5
+                    pinch.setTotalScaleFactor(0.1)
+                elif zoom >= 10:
+                    zoom = 10
+                    pinch.setTotalScaleFactor(1.6)
+                self.setScale(zoom)
+            evt.accept()
+    
+    # TODO: implement context menu
+    #       - Open Link
+    #       - Open Link in New Page
+    #       - Open Link in Background Page
+    #       - Copy
+    #       - Copy Link LOcation
+    #       - Select All
     # TODO: add Ctrl+LMB action (open link in new page)