From 6ce96fdbf59138bebadbd8157d8285327a1a3796 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tor=20Arne=20Vestb=C3=B8?= <tor.arne.vestbo@qt.io>
Date: Thu, 25 Aug 2016 13:09:27 +0200
Subject: multiwindow: React to mouse press to allow debugging UI
 responsiveness

The animated FPS counter should be enough to observe smooth animations,
so we use the color of the window to visualize frame latency.

Change-Id: I1171a1c4bdc261ca8655771290c6735357821781
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
---
 tests/manual/qopenglwindow/multiwindow/main.cpp | 53 ++++++++++---------------
 1 file changed, 20 insertions(+), 33 deletions(-)

(limited to 'tests/manual/qopenglwindow')

diff --git a/tests/manual/qopenglwindow/multiwindow/main.cpp b/tests/manual/qopenglwindow/multiwindow/main.cpp
index 66ebb73c56..31688d717e 100644
--- a/tests/manual/qopenglwindow/multiwindow/main.cpp
+++ b/tests/manual/qopenglwindow/multiwindow/main.cpp
@@ -31,14 +31,7 @@
 **
 ****************************************************************************/
 
-#include <QGuiApplication>
-#include <QOpenGLWindow>
-#include <QOpenGLContext>
-#include <QOpenGLFunctions>
-#include <QPainter>
-#include <QElapsedTimer>
-#include <QCommandLineParser>
-#include <QScreen>
+#include <QtGui>
 
 const char applicationDescription[] = "\n\
 This application opens multiple windows and continuously schedules updates for\n\
@@ -67,40 +60,26 @@ class Window : public QOpenGLWindow
 {
     Q_OBJECT
 public:
-    Window(int n) : idx(n) {
-        r = g = b = fps = 0;
-        y = 0;
+    Window(int index) : windowNumber(index + 1), y(0), fps(0) {
+
+        color = QColor::fromHsl((index * 30) % 360, 255, 127).toRgb();
+
         resize(200, 200);
 
+        setObjectName(QString("Window %1").arg(windowNumber));
+
         connect(this, SIGNAL(frameSwapped()), SLOT(frameSwapped()));
         fpsTimer.start();
     }
 
     void paintGL() {
         QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions();
-        f->glClearColor(r, g, b, 1);
+        f->glClearColor(color.redF(), color.greenF(), color.blueF(), 1);
         f->glClear(GL_COLOR_BUFFER_BIT);
-        switch (idx % 3) {
-        case 0:
-            r += 0.005f;
-            break;
-        case 1:
-            g += 0.005f;
-            break;
-        case 2:
-            b += 0.005f;
-            break;
-        }
-        if (r > 1)
-            r = 0;
-        if (g > 1)
-            g = 0;
-        if (b > 1)
-            b = 0;
 
         QPainter p(this);
         p.setPen(Qt::white);
-        p.drawText(QPoint(20, y), QString(QLatin1String("Window %1 (%2 FPS)")).arg(idx).arg(fps));
+        p.drawText(QPoint(20, y), QString(QLatin1String("Window %1 (%2 FPS)")).arg(windowNumber).arg(fps));
         y += 1;
         if (y > height() - 20)
             y = 20;
@@ -118,9 +97,17 @@ public slots:
         }
     }
 
+protected:
+    void mousePressEvent(QMouseEvent *event) {
+        qDebug() << this << event;
+        color.setHsl((color.hue() + 90) % 360, color.saturation(), color.lightness());
+        color = color.toRgb();
+    }
+
 private:
-    int idx;
-    GLfloat r, g, b;
+    int windowNumber;
+    QColor color;
+
     int y;
 
     int framesSwapped;
@@ -163,7 +150,7 @@ int main(int argc, char **argv)
     int numberOfWindows = qMax(parser.value(numWindowsOption).toInt(), 1);
     QList<QWindow *> windows;
     for (int i = 0; i < numberOfWindows; ++i) {
-        Window *w = new Window(i + 1);
+        Window *w = new Window(i);
         windows << w;
 
         if (i == 0 && parser.isSet(vsyncOneOption)) {
-- 
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