From 7badda6845696cab7209c13aad6ede58aed61acd Mon Sep 17 00:00:00 2001
From: giersch <giersch>
Date: Tue, 6 Nov 2007 20:54:40 +0000
Subject: [PATCH] .

---
 DrawingWindow.cpp | 44 +++++++++++++++++++++++++++++++-------------
 DrawingWindow.h   |  2 ++
 test/hello.cpp    | 14 ++++++++------
 3 files changed, 41 insertions(+), 19 deletions(-)

diff --git a/DrawingWindow.cpp b/DrawingWindow.cpp
index 76227ff..b60eb06 100644
--- a/DrawingWindow.cpp
+++ b/DrawingWindow.cpp
@@ -157,14 +157,7 @@ bool DrawingWindow::sync(unsigned long time)
 {
     bool ret;
     d->safeLock(d->paintMutex);
-    d->safeLock(d->imageMutex);
-#if 1
-    d->dirty();                 // xxx
-#else
-    QApplication::postEvent(this, new QPaintEvent(this->rect()));
-    d->dirtyFlag = false;
-#endif
-    d->safeUnlock(d->imageMutex);
+    QApplication::postEvent(this, new QEvent(QEvent::User));
     ret = d->paintCondition.wait(&d->paintMutex, time);
     d->safeUnlock(d->paintMutex);
     return ret;
@@ -194,6 +187,36 @@ void DrawingWindow::closeEvent(QCloseEvent *ev)
     d->thread->wait();
 }
 
+void DrawingWindow::customEvent(QEvent *)
+{
+    d->imageMutex.lock();
+    if (d->dirtyFlag) {
+        QRect r = d->dirtyRect;
+        d->dirtyFlag = false;
+        d->imageMutex.unlock();
+        repaint(r);
+    } else
+        d->imageMutex.unlock();
+    d->paintMutex.lock();
+    d->paintCondition.wakeAll();
+    d->paintMutex.unlock();
+}
+
+void DrawingWindow::keyPressEvent(QKeyEvent *ev)
+{
+    bool accept = true;
+    switch (ev->key()) {
+    case Qt::Key_Escape:
+        close();
+        break;
+    default:
+        accept = false;
+        break;
+    }
+    if (accept)
+        ev->accept();
+}
+
 void DrawingWindow::paintEvent(QPaintEvent *ev)
 {
     QPainter widgetPainter(this);
@@ -202,11 +225,6 @@ void DrawingWindow::paintEvent(QPaintEvent *ev)
     d->imageMutex.unlock();
     QRect rect = ev->rect();
     widgetPainter.drawImage(rect, imageCopy, rect);
-    if (rect == this->rect()) {
-        d->paintMutex.lock();
-        d->paintCondition.wakeAll();
-        d->paintMutex.unlock();
-    }
 }
 
 void DrawingWindow::showEvent(QShowEvent *ev)
diff --git a/DrawingWindow.h b/DrawingWindow.h
index c6aaa0d..66fc445 100644
--- a/DrawingWindow.h
+++ b/DrawingWindow.h
@@ -44,6 +44,8 @@ public:
 
 protected:
     void closeEvent(QCloseEvent *ev);
+    void customEvent(QEvent *ev);
+    void keyPressEvent(QKeyEvent *ev);
     void paintEvent(QPaintEvent *ev);
     void showEvent(QShowEvent *ev);
     void timerEvent(QTimerEvent *ev);
diff --git a/test/hello.cpp b/test/hello.cpp
index 8cc7b50..bc1a62e 100644
--- a/test/hello.cpp
+++ b/test/hello.cpp
@@ -42,6 +42,7 @@ void flip(DrawingWindow &w)
         for (int yy = y; yy < y + 10; yy++) {
             for (int x = 0; x < w.width; x++)
                 w.drawPoint(x, yy);
+            w.sync();
         }
         if ((y += 10) >= w.height) {
             y = 0;
@@ -115,6 +116,7 @@ void mandel(DrawingWindow &w)
             ci += pi;
         }
         cr += pr;
+//         w.sync();
     }
 }
 
@@ -154,12 +156,6 @@ int main(int argc, char *argv[])
     const int h = 700;
     QApplication application(argc, argv);
 
-    DrawingWindow dl(lines, w, h);
-    dl.show();
-
-    DrawingWindow dr(rectangles, w, h);
-    dr.show();
-
     const int nf = 1;
     const int nm = 1;
     DrawingWindow *dw[nf + nm];
@@ -172,5 +168,11 @@ int main(int argc, char *argv[])
     for (int i = 0; i < nf + nm; ++i)
         dw[i]->show();
 
+    DrawingWindow dr(rectangles, w, h);
+    dr.show();
+
+    DrawingWindow dl(lines, w, h);
+    dl.show();
+
     return application.exec();
 }
-- 
2.20.1