Merge remote-tracking branch 'origin/pr/4261'

qutebrowser/config/configdata.yml

@@ -1602,6 +1602,23 @@ tabs.min_width:
 
     This setting does not apply to pinned tabs, unless `tabs.pinned.shrink` is False.
 
+tabs.max_width:
+  default: -1
+  type:
+    name: Int
+    minval: -1
+    maxval: maxint
+  desc: >-
+    Maximum width (in pixels) of tabs (-1 for no maximum).
+
+    This setting only applies when tabs are horizontal.
+
+    This setting does not apply to pinned tabs, unless `tabs.pinned.shrink` is
+    False.
+
+    This setting may not apply properly if max_width is smaller than the
+    minimum size of tab contents, or smaller than tabs.min_width.
+
 tabs.width.indicator:
   renamed: tabs.indicator.width
 

qutebrowser/mainwindow/tabwidget.py

@@ -616,6 +616,9 @@ class TabBar(QTabBar):
                 # Qt shrink us down. If for some reason (tests, bugs)
                 # self.width() gives 0, use a sane min of 10 px
                 width = max(self.width(), 10)
+                max_width = config.cache['tabs.max_width']
+                if max_width > 0:
+                    width = min(max_width, width)
             size = QSize(width, height)
         qtutils.ensure_valid(size)
         return size

tests/unit/mainwindow/test_tabwidget.py

@@ -38,6 +38,7 @@ class TestTabWidget:
         qtbot.addWidget(w)
         monkeypatch.setattr(tabwidget.objects, 'backend',
                             usertypes.Backend.QtWebKit)
+        w.show()
         return w
 
     @pytest.fixture
@@ -108,7 +109,7 @@ class TestTabWidget:
 
         for i in range(num_tabs):
             if i in pinned_num and shrink_pinned and not vertical:
-                assert (first_size.width() <
+                assert (first_size.width() >
                         widget.tabBar().tabSizeHint(i).width())
                 assert (first_size_min.width() <
                         widget.tabBar().minimumTabSizeHint(i).width())
@@ -128,6 +129,19 @@ class TestTabWidget:
 
         benchmark(widget.update_tab_titles)
 
+    def test_tab_min_width(self, widget, fake_web_tab, config_stub, qtbot):
+        widget.addTab(fake_web_tab(), 'foobar')
+        widget.addTab(fake_web_tab(), 'foobar1')
+        min_size = widget.tabBar().tabRect(0).width() + 10
+        config_stub.val.tabs.min_width = min_size
+        assert widget.tabBar().tabRect(0).width() == min_size
+
+    def test_tab_max_width(self, widget, fake_web_tab, config_stub, qtbot):
+        widget.addTab(fake_web_tab(), 'foobar')
+        max_size = widget.tabBar().tabRect(0).width() - 10
+        config_stub.val.tabs.max_width = max_size
+        assert widget.tabBar().tabRect(0).width() == max_size
+
     @pytest.mark.parametrize("num_tabs", [4, 10])
     def test_add_remove_tab_benchmark(self, benchmark, browser,
                                       qtbot, fake_web_tab, num_tabs):