1 files changed, 209 insertions, 0 deletions
diff --git a/SQLiteStudio3/guiSQLiteStudio/common/widgetcover.cpp b/SQLiteStudio3/guiSQLiteStudio/common/widgetcover.cpp
new file mode 100644
index 0000000..7cc6a4e
--- /dev/null
+++ b/SQLiteStudio3/guiSQLiteStudio/common/widgetcover.cpp
@@ -0,0 +1,209 @@
+#include "widgetcover.h"
+#include "common/unused.h"
+#include <QVariantAnimation>
+#include <QDebug>
+#include <QGraphicsBlurEffect>
+#include <QPushButton>
+#include <QGridLayout>
+#include <QEvent>
+#include <QPushButton>
+#include <QProgressBar>
+
+WidgetCover::WidgetCover(QWidget *parent) :
+    QWidget(parent)
+{
+    init();
+}
+
+WidgetCover::WidgetCover(const QEasingCurve& easingCurve, QWidget* parent)
+    : QWidget(parent), easingCurve(easingCurve)
+{
+    init();
+}
+
+WidgetCover::~WidgetCover()
+{
+    interruptAction();
+}
+
+void WidgetCover::init()
+{
+    parentWidget()->installEventFilter(this);
+
+    setLayout(new QGridLayout(this));
+    layout()->setAlignment(Qt::AlignCenter);
+
+    container = new QWidget(this);
+    container->setVisible(false);
+    layout()->addWidget(container);
+
+    containerLayout = new QGridLayout(container);
+    containerLayout->setSizeConstraint(QLayout::SetFixedSize);
+
+    animation = new QVariantAnimation(this);
+    animation->setEasingCurve(easingCurve);
+    animation->setDuration(duration);
+    connect(animation, SIGNAL(valueChanged(QVariant)), this, SLOT(animationUpdate(QVariant)));
+    connect(animation, SIGNAL(finished()), this, SLOT(animationFinished()));
+
+    setAutoFillBackground(true);
+    resetBackground();
+    move(0, 0);
+    widgetResized();
+    hide();
+}
+
+void WidgetCover::interruptAction()
+{
+    setVisible(false);
+    animation->stop();
+}
+
+void WidgetCover::resetBackground()
+{
+    QPalette pal = palette();
+    pal.setBrush(QPalette::Window, QColor(0, 0, 0, 0));
+    setPalette(pal);
+}
+
+void WidgetCover::animationUpdate(const QVariant& value)
+{
+    QPalette pal = palette();
+    pal.setBrush(QPalette::Window, value.value<QColor>());
+    setPalette(pal);
+}
+
+void WidgetCover::animationFinished()
+{
+    switch (actionInProgres)
+    {
+        case Action::HIDING:
+        {
+            setVisible(false);
+            resetBackground();
+            break;
+        }
+        case Action::SHOWING:
+        {
+            container->setVisible(true);
+            break;
+        }
+        default:
+            break;
+    }
+
+    actionInProgres = Action::NONE;
+}
+
+void WidgetCover::widgetResized()
+{
+//    qDebug() << parentWidget()->size();
+    setFixedSize(parentWidget()->size());
+}
+
+void WidgetCover::show()
+{
+    if (actionInProgres == Action::SHOWING)
+        return;
+
+    if (actionInProgres == Action::HIDING)
+        animation->stop();
+
+    actionInProgres = Action::SHOWING;
+
+    if (cancelButton)
+        cancelButton->setEnabled(true);
+
+    QPalette pal = palette();
+    animation->setStartValue(QVariant(pal.brush(QPalette::Window).color()));
+    animation->setEndValue(QVariant(QColor(0, 0, 0, transparency)));
+    setVisible(true);
+    container->setVisible(true);
+    animation->start();
+}
+
+void WidgetCover::hide()
+{
+    if (actionInProgres == Action::HIDING)
+        return;
+
+    if (actionInProgres == Action::SHOWING)
+        animation->stop();
+
+    actionInProgres = Action::HIDING;
+
+    container->setVisible(false);
+
+    QPalette pal = palette();
+    animation->setStartValue(QVariant(pal.brush(QPalette::Window).color()));
+    animation->setEndValue(QVariant(QColor(0, 0, 0, 0)));
+    animation->start();
+}
+
+QEasingCurve WidgetCover::getEasingCurve() const
+{
+    return easingCurve;
+}
+
+void WidgetCover::setEasingCurve(const QEasingCurve& value)
+{
+    easingCurve = value;
+    animation->setEasingCurve(easingCurve);
+}
+
+int WidgetCover::getDuration() const
+{
+    return duration;
+}
+
+void WidgetCover::setDuration(int value)
+{
+    duration = value;
+    animation->setDuration(duration);
+}
+
+int WidgetCover::getTransparency() const
+{
+    return transparency;
+}
+
+void WidgetCover::setTransparency(int value)
+{
+    if (value < 0)
+        value = 0;
+
+    if (value > 255)
+        value = 255;
+
+    transparency = value;
+}
+
+QGridLayout* WidgetCover::getContainerLayout()
+{
+    return containerLayout;
+}
+
+bool WidgetCover::eventFilter(QObject* obj, QEvent* e)
+{
+    UNUSED(obj);
+    if (e->type() == QEvent::Resize)
+        widgetResized();
+
+    return false;
+}
+
+void WidgetCover::initWithInterruptContainer(const QString& interruptButtonText)
+{
+    cancelButton = new QPushButton();
+    cancelButton->setText(interruptButtonText.isNull() ? tr("Interrupt") : interruptButtonText);
+
+    busyBar = new QProgressBar();
+    busyBar->setRange(0, 0);
+    busyBar->setTextVisible(false);
+
+    containerLayout->addWidget(busyBar, 0, 0);
+    containerLayout->addWidget(cancelButton, 1, 0);
+
+    connect(cancelButton, &QPushButton::clicked, [=]() {cancelButton->setEnabled(false);});
+    connect(cancelButton, SIGNAL(clicked()), this, SIGNAL(cancelClicked()));
+}