perf scripts python: exported-sql-viewer.py: Add ability to shrink / enlarge font

Shrinking the font allows more information to display.

Committer testing:

Works, tested with the convenient Control+Shift+'+' and Control+'-' as
well with the more cumbersome top menu "Edit" + "Enlarge/Shrink font"
options.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20181001062853.28285-16-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/scripts/python/exported-sql-viewer.py b/tools/perf/scripts/python/exported-sql-viewer.py
index 0386a600ffc7300ba69d9227fb730533b109e779..310ba71475830b6bddc5a9dbd1748b6916bafe14 100755 (executable)
--- a/tools/perf/scripts/python/exported-sql-viewer.py
+++ b/tools/perf/scripts/python/exported-sql-viewer.py
@@ -706,6 +706,20 @@ class WindowMenu():
        def setActiveSubWindow(self, nr):
                self.mdi_area.setActiveSubWindow(self.mdi_area.subWindowList()[nr - 1])
 
+# Font resize
+
+def ResizeFont(widget, diff):
+       font = widget.font()
+       sz = font.pointSize()
+       font.setPointSize(sz + diff)
+       widget.setFont(font)
+
+def ShrinkFont(widget):
+       ResizeFont(widget, -1)
+
+def EnlargeFont(widget):
+       ResizeFont(widget, 1)
+
 # Unique name for sub-windows
 
 def NumberedWindowName(name, nr):
@@ -765,6 +779,8 @@ class MainWindow(QMainWindow):
 
                edit_menu = menu.addMenu("&Edit")
                edit_menu.addAction(CreateAction("&Find...", "Find items", self.Find, self, QKeySequence.Find))
+               edit_menu.addAction(CreateAction("&Shrink Font", "Make text smaller", self.ShrinkFont, self, [QKeySequence("Ctrl+-")]))
+               edit_menu.addAction(CreateAction("&Enlarge Font", "Make text bigger", self.EnlargeFont, self, [QKeySequence("Ctrl++")]))
 
                reports_menu = menu.addMenu("&Reports")
                reports_menu.addAction(CreateAction("Context-Sensitive Call &Graph", "Create a new window containing a context-sensitive call graph", self.NewCallGraph, self))
@@ -779,6 +795,14 @@ class MainWindow(QMainWindow):
                        except:
                                pass
 
+       def ShrinkFont(self):
+               win = self.mdi_area.activeSubWindow()
+               ShrinkFont(win.view)
+
+       def EnlargeFont(self):
+               win = self.mdi_area.activeSubWindow()
+               EnlargeFont(win.view)
+
        def NewCallGraph(self):
                CallGraphWindow(self.glb, self)