Use KDAB artwork for the dockwidgets example

Work in progress but already looks good.

examples/dockwidgets/MyWidget.cpp

@@ -20,39 +20,80 @@
 
 #include "MyWidget.h"
 
-#include <QVBoxLayout>
-#include <QGroupBox>
-#include <QRadioButton>
-#include <QPushButton>
+#include <QPainter>
+#include <QDebug>
+#include <QFile>
 
-MyWidget::MyWidget(QWidget *parent)
+MyWidget::MyWidget(const QString &backgroundFile, const QString &logoFile, QWidget *parent)
     : QWidget(parent)
+    , m_background(QImage(backgroundFile))
+    , m_logo(QImage(logoFile))
 {
-    auto l = new QVBoxLayout(this);
-
-    auto box = new QGroupBox();
-    auto l2 = new QVBoxLayout(box);
-    auto radio1 = new QRadioButton(QStringLiteral("foo"), box);
-    auto radio2 = new QRadioButton(QStringLiteral("bar"), box);
-    auto radio3 = new QRadioButton(QStringLiteral("baz"), box);
-    l2->addWidget(radio1);
-    l2->addWidget(radio2);
-    l2->addWidget(radio3);
-
-    l->addWidget(box);
-    auto button = new QPushButton(QStringLiteral("Test"));
-    l->addWidget(button);
-    l->addWidget(new QPushButton(QStringLiteral("Test")));
-    l->addStretch();
-
-    connect(button, &QPushButton::clicked, button, [this] {
-        // To test if moving windows work on Wayland
-        QPoint pos = window()->pos();
-        window()->move(pos + QPoint(30, 30));
-    });
+    if (!backgroundFile.isEmpty() && m_background.isNull())
+        qWarning() << "Invalid image for background file" << backgroundFile;
 
+    if (!logoFile.isEmpty() && m_logo.isNull())
+        qWarning() << "Invalid image for logo file" << logoFile;
 }
 
 MyWidget::~MyWidget()
 {
 }
+
+void MyWidget::drawLogo(QPainter &p)
+{
+    if (m_logo.isNull())
+        return;
+
+    const qreal ratio = m_logo.width() / (m_logo.height() * 1.0);
+
+    const int height = size().height() - 100;
+    const int width = int(height * ratio);
+    QRect targetLogoRect(0,0, width, height);
+    targetLogoRect.moveCenter(rect().center());
+    p.drawImage(targetLogoRect, m_logo, m_logo.rect());
+}
+
+MyWidget1::MyWidget1(MyWidget::QWidget *parent)
+    : MyWidget(QStringLiteral(":/assets/triangles.png"), QStringLiteral(":/assets/KDAB_bubble_white.png"), parent)
+{
+}
+
+void MyWidget1::paintEvent(QPaintEvent *)
+{
+    QPainter p(this);
+    p.fillRect(rect(), QColor(0xCC, 0xCC, 0xCC));
+    p.drawImage(m_background.rect(), m_background, m_background.rect());
+
+    drawLogo(p);
+}
+
+MyWidget2::MyWidget2(MyWidget::QWidget *parent)
+    : MyWidget(QString(), QStringLiteral(":/assets/KDAB_bubble_blue.png"), parent)
+    , m_triangle(QImage(QStringLiteral(":/assets/tri.png")))
+{
+}
+
+void MyWidget2::paintEvent(QPaintEvent *)
+{
+    QPainter p(this);
+    p.fillRect(rect(), Qt::white);
+
+    //.drawImage(rect(), m_triangle, m_triangle.rect());
+
+    drawLogo(p);
+}
+
+MyWidget3::MyWidget3(MyWidget::QWidget *parent)
+    : MyWidget(QStringLiteral(":/assets/base.png"), QStringLiteral(":/assets/KDAB_bubble_fulcolor.png"), parent)
+{
+}
+
+void MyWidget3::paintEvent(QPaintEvent *)
+{
+    QPainter p(this);
+    p.fillRect(rect(), QColor(0xD5, 0xD5, 0xD5));
+
+    p.drawImage(m_background.rect(), m_background, m_background.rect());
+    drawLogo(p);
+}