From 8c9b92b51c8962e3992ad91580798c02f7c65761 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Samuel=20R=C3=B8dal?= <sroedal@trolltech.com>
Date: Tue, 24 Jun 2008 16:32:55 +0200
Subject: Fix bug where choosing cancel in color dialog causes color to become
 black.

---
 openglscene.cpp | 43 +++++++++++++++++++++++--------------------
 openglscene.h   |  5 ++++-
 2 files changed, 27 insertions(+), 21 deletions(-)

diff --git a/openglscene.cpp b/openglscene.cpp
index c80d7b8..6c63939 100644
--- a/openglscene.cpp
+++ b/openglscene.cpp
@@ -23,8 +23,8 @@ public:
 private slots:
     void loadModel(const QString &model);
     void modelLoaded();
-    void setModelColor(bool showDialog = true);
-    void setBackgroundColor(bool showDialog = true);
+    void setModelColor();
+    void setBackgroundColor();
 
 private:
     OpenGLScene *m_scene;
@@ -32,17 +32,12 @@ private:
     QFutureWatcher<Model *> m_modelLoader;
 #endif
     QComboBox *m_models;
-
-    QColor m_modelColor;
-    QColor m_backgroundColor;
     QDir m_dir;
 };
 
 Controls::Controls(OpenGLScene *scene)
     : m_scene(scene)
     , m_models(new QComboBox)
-    , m_modelColor(QColor::fromCmykF(0.40, 0.0, 1.0, 0.0))
-    , m_backgroundColor(QColor::fromCmykF(0.39, 0.39, 0.0, 0.0))
     , m_dir(QLatin1String("models"))
 {
     QVBoxLayout *layout = new QVBoxLayout(this);
@@ -81,12 +76,10 @@ Controls::Controls(OpenGLScene *scene)
     QPushButton *colorButton = new QPushButton(tr("Choose model color"));
     connect(colorButton, SIGNAL(pressed()), this, SLOT(setModelColor()));
     layout->addWidget(colorButton);
-    setModelColor(false);
 
     QPushButton *backgroundButton = new QPushButton(tr("Choose background color"));
     connect(backgroundButton, SIGNAL(pressed()), this, SLOT(setBackgroundColor()));
     layout->addWidget(backgroundButton);
-    setBackgroundColor(false);
 }
 
 Model *loadModel(const QString &filename)
@@ -115,26 +108,26 @@ void Controls::modelLoaded()
     QApplication::restoreOverrideCursor();
 }
 
-void Controls::setModelColor(bool showDialog)
+void Controls::setModelColor()
 {
-    if (showDialog)
-        m_modelColor = QColorDialog::getColor(m_modelColor);
-
-    m_scene->setModelColor(m_modelColor);
+    const QColor color = QColorDialog::getColor(m_scene->modelColor());
+    if (color.isValid())
+        m_scene->setModelColor(color);
 }
 
-void Controls::setBackgroundColor(bool showDialog)
+void Controls::setBackgroundColor()
 {
-    if (showDialog)
-        m_backgroundColor = QColorDialog::getColor(m_backgroundColor);
-
-    m_scene->setBackgroundColor(m_backgroundColor);
+    const QColor color = QColorDialog::getColor(m_scene->backgroundColor());
+    if (color.isValid())
+        m_scene->setBackgroundColor(color);
 }
 
 OpenGLScene::OpenGLScene()
     : m_wireframeEnabled(true)
     , m_normalsEnabled(false)
     , m_distance(1.4f)
+    , m_modelColor(QColor::fromCmykF(0.40, 0.0, 1.0, 0.0))
+    , m_backgroundColor(QColor::fromCmykF(0.39, 0.39, 0.0, 0.0))
     , m_model(new Model)
     , m_lastTime(0)
     , m_angularMomentum(0, 40, 0)
@@ -176,7 +169,6 @@ void OpenGLScene::drawBackground(QPainter *painter, const QRectF &)
     m_rotation += m_angularMomentum * (delta / 1000.0);
     m_lastTime += delta;
 
-    glLoadIdentity();
     glTranslatef(0, 0, -m_distance);
     glRotatef(m_rotation.x, 1, 0, 0);
     glRotatef(m_rotation.y, 0, 1, 0);
@@ -231,6 +223,17 @@ void OpenGLScene::setBackgroundColor(const QColor &color)
     update();
 }
 
+QColor OpenGLScene::backgroundColor() const
+{
+    return m_backgroundColor;
+}
+
+QColor OpenGLScene::modelColor() const
+{
+    return m_modelColor;
+}
+
+
 void OpenGLScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
 {
     QGraphicsScene::mouseMoveEvent(event);
diff --git a/openglscene.h b/openglscene.h
index e7b0619..c9283ab 100644
--- a/openglscene.h
+++ b/openglscene.h
@@ -17,6 +17,9 @@ public:
 
     void drawBackground(QPainter *painter, const QRectF &rect);
 
+    QColor backgroundColor() const;
+    QColor modelColor() const;
+
 public slots:
     void setModel(Model *model);
     void enableWireframe(bool enabled);
@@ -38,8 +41,8 @@ private:
     float m_lightPos;
     float m_distance;
 
-    QColor m_backgroundColor;
     QColor m_modelColor;
+    QColor m_backgroundColor;
 
     Model *m_model;
 
-- 
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