From f42ff06ce89fcdbf35d09a1b2f03f599767c50b7 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andreas.huber@lucares.de>
Date: Thu, 28 Oct 2021 09:40:40 +0200
Subject: [PATCH] use wheel + ctrl to change font size

---
 bigtext.py  |  9 +++++++--
 scribble.py | 53 +++++++++++++++++++++++++++++++++++++++++------------
 settings.py |  8 ++++++--
 3 files changed, 54 insertions(+), 16 deletions(-)

diff --git a/bigtext.py b/bigtext.py
index 8059708..aa41266 100644
--- a/bigtext.py
+++ b/bigtext.py
@@ -148,8 +148,13 @@ class InnerBigText(QWidget):
 
     def wheelEvent(self, event: QWheelEvent):
         direction = 1 if event.angleDelta().y() < 0 else -1
-        # print("wheel event fired :) %s" % (direction))
-        self.scroll_by_lines(direction * 3)
+        if event.modifiers() == Qt.KeyboardModifier.ControlModifier:
+            font_size = min(max(4, self.model.settings.get_font_size()-direction),30)
+            self.model.settings.font_size(font_size)
+            self.update()
+        else:
+            # print("wheel event fired :) %s" % (direction))
+            self.scroll_by_lines(direction * 3)
 
     def scroll_by_lines(self, scroll_lines: int):
         self.scroll_lines = scroll_lines
diff --git a/scribble.py b/scribble.py
index 83e219f..5d9e892 100644
--- a/scribble.py
+++ b/scribble.py
@@ -1,15 +1,44 @@
-import math
+
+import multiprocessing
+import time
+
+from multiprocessing import Pool
+
+file = "/tmp/tmp123123"
+
+from concurrent.futures import ThreadPoolExecutor
+from time import sleep
+
+def writer():
+    with open(file, "w+b") as f:
+        for i in range(0, 10):
+            f.write(("%s"%(i)).encode("utf8"))
+            time.sleep(0.5)
+            print("writing ", time.time())
+
+def reader():
+    with open(file, "rb") as f:
+        for i in range(0,10):
+
+            lines = f.readlines()
+            time.sleep(0.5)
+            print("read ", time.time())
+
+pool = Pool(5)
+
+with pool as p:
+    p.apply_async(writer)
+    p.apply_async(reader)
+
+pool.join()
+
+
+executor = ThreadPoolExecutor(2)
+future1 = executor.submit(writer)
+future2 = executor.submit(reader)
+
+print(future1.result())
+print(future2.result())
 
 
 
-before = []#[0,1,2,3]
-after = ["a","b","c","d"]
-both = before + after
-scroll = -3
-lines = 1
-start = len(before) + scroll
-if start+lines < len(both):
-    result = both[start:start+lines]
-else:
-    result = both[-lines:]
-print("%s" % result)
diff --git a/settings.py b/settings.py
index 6ad8f2e..78ebd9d 100644
--- a/settings.py
+++ b/settings.py
@@ -1,9 +1,12 @@
+from typing import Callable
+
 from PyQt6.QtGui import QFont
 
 
 class Settings():
 
-    def __init__(self):
+    def __init__(self, callback_update_ui: Callable[[], None]):
+        self.callback_update_ui = callback_update_ui
         self.font_size(12)
 
     @staticmethod
@@ -18,4 +21,5 @@ class Settings():
 
     def font_size(self, font_size: int):
         self._font_size = font_size
-        self._font = QFont("monospace", font_size)
\ No newline at end of file
+        self._font = QFont("monospace", font_size)
+        self.callback_update_ui()
\ No newline at end of file