Don't duplicate calls to X11Window's setVisible.

Calling setVisible multiple times in a row can cause a hang while X11Window waits for events that will never be generted. Change-Id: I43af8d4c79c7010dae78aa38c9716ed5b7b02865 Reviewed-on: https://chromium-review.googlesource.com/322380Reviewed-by: Corentin Wallez <cwallez@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

Don't duplicate calls to X11Window's setVisible.
732703e6 · Geoff Lang · 1a679900 · 732703e6 · 732703e6
Commit 732703e6 authored Jan 13, 2016 by Geoff Lang
Hide whitespace changes
Inline Side-by-side

Showing with 7 additions and 3 deletions

X11Window.cpp util/x11/X11Window.cpp +6 -3

X11Window.h util/x11/X11Window.h +1 -0

No files found.
--- a/util/x11/X11Window.cpp
+++ b/util/x11/X11Window.cpp
@@ -157,7 +157,8 @@ X11Window::X11Window()
      TEST_EVENT(None),
      mDisplay(nullptr),
      mWindow(0),
-      mRequestedVisualId(-1)
+      mRequestedVisualId(-1),
+      mVisible(false)
 {
 }
@@ -167,7 +168,8 @@ X11Window::X11Window(int visualId)
      TEST_EVENT(None),
      mDisplay(nullptr),
      mWindow(0),
-      mRequestedVisualId(visualId)
+      mRequestedVisualId(visualId),
+      mVisible(false)
 {
 }
@@ -347,7 +349,7 @@ bool X11Window::resize(int width, int height)
 void X11Window::setVisible(bool isVisible)
 {
-    if (isVisible)
+    if (mVisible != isVisible)
    {
        XMapWindow(mDisplay, mWindow);
@@ -363,6 +365,7 @@ void X11Window::setVisible(bool isVisible)
        XUnmapWindow(mDisplay, mWindow);
        XFlush(mDisplay);
    }
+    mVisible = isVisible;
 }
 void X11Window::signalTestEvent()

--- a/util/x11/X11Window.h
+++ b/util/x11/X11Window.h
@@ -48,6 +48,7 @@ class X11Window : public OSWindow
    Display *mDisplay;
    Window mWindow;
    int mRequestedVisualId;
+    bool mVisible;
 };
 #endif // UTIL_X11_WINDOW_H