Added missing FloatingWidgetTitleBar.cpp and missing stylesheet file for linux

Author: Uwe Kindler

src/FloatingWidgetTitleBar.cpp

@@ -0,0 +1,187 @@
+/*******************************************************************************
+** Qt Advanced Docking System
+** Copyright (C) 2017 Uwe Kindler
+**
+** This library is free software; you can redistribute it and/or
+** modify it under the terms of the GNU Lesser General Public
+** License as published by the Free Software Foundation; either
+** version 2.1 of the License, or (at your option) any later version.
+**
+** This library is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+** Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser General Public
+** License along with this library; If not, see <http://www.gnu.org/licenses/>.
+******************************************************************************/
+
+
+//============================================================================
+/// \file   FloatingWidgetTitleBar.cpp
+/// \author Uwe Kindler
+/// \date   13.05.2019
+/// \brief  Implementation of CFloatingWidgetTitleBar class
+//============================================================================
+
+//============================================================================
+//                                   INCLUDES
+//============================================================================
+#include "FloatingWidgetTitleBar.h"
+
+#include <iostream>
+
+#include <QHBoxLayout>
+#include <QPushButton>
+#include <QToolButton>
+#include <QPixmap>
+#include <QStyle>
+#include <QMouseEvent>
+
+#include "ads_globals.h"
+#include "ElidingLabel.h"
+#include "FloatingDockContainer.h"
+
+namespace ads
+{
+
+using tTabLabel = CElidingLabel;
+using tCloseButton = QPushButton;
+
+
+/**
+ * @brief Private data class of public interface CFloatingWidgetTitleBar
+ */
+struct FloatingWidgetTitleBarPrivate
+{
+    CFloatingWidgetTitleBar* _this; ///< public interface class
+    QLabel* IconLabel = nullptr;
+    tTabLabel* TitleLabel;
+    tCloseButton* CloseButton = nullptr;
+    CFloatingDockContainer* FloatingWidget = nullptr;
+    eDragState DragState = DraggingInactive;
+
+    FloatingWidgetTitleBarPrivate(CFloatingWidgetTitleBar* _public) : _this(_public) {}
+
+    /**
+     * Creates the complete layout including all controls
+     */
+    void createLayout();
+};
+
+
+//============================================================================
+void FloatingWidgetTitleBarPrivate::createLayout()
+{
+    TitleLabel = new tTabLabel();
+    TitleLabel->setElideMode(Qt::ElideRight);
+    TitleLabel->setText("DockWidget->windowTitle()");
+    TitleLabel->setObjectName("floatingTitleLabel");
+    TitleLabel->setAlignment(Qt::AlignLeft);
+
+    CloseButton = new tCloseButton();
+    CloseButton->setObjectName("floatingTitleCloseButton");
+    CloseButton->setFlat(true);
+    //CloseButton->setAutoRaise(true);
+    // The standard icons do does not look good on high DPI screens
+    QIcon CloseIcon;
+    QPixmap normalPixmap = _this->style()->standardPixmap(QStyle::SP_TitleBarCloseButton, 0, CloseButton);
+    CloseIcon.addPixmap(normalPixmap, QIcon::Normal);
+    CloseIcon.addPixmap(internal::createTransparentPixmap(normalPixmap, 0.25), QIcon::Disabled);
+    CloseButton->setIcon(_this->style()->standardIcon(QStyle::SP_TitleBarCloseButton));
+    CloseButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+    CloseButton->setVisible(true);
+    CloseButton->setFocusPolicy(Qt::NoFocus);
+    _this->connect(CloseButton, SIGNAL(clicked()), SIGNAL(closeRequested()));
+
+    QFontMetrics fm(TitleLabel->font());
+    int Spacing = qRound(fm.height() / 4.0);
+
+    // Fill the layout
+    QBoxLayout* Layout = new QBoxLayout(QBoxLayout::LeftToRight);
+    Layout->setContentsMargins(6,0,0,0);
+    Layout->setSpacing(0);
+    _this->setLayout(Layout);
+    Layout->addWidget(TitleLabel, 1);
+    Layout->addSpacing(Spacing);
+    Layout->addWidget(CloseButton);
+    Layout->setAlignment(Qt::AlignCenter);
+
+    TitleLabel->setVisible(true);
+}
+
+
+//============================================================================
+CFloatingWidgetTitleBar::CFloatingWidgetTitleBar(CFloatingDockContainer *parent)
+    : QWidget(parent),
+      d(new FloatingWidgetTitleBarPrivate(this))
+{
+    d->FloatingWidget = parent;
+    d->createLayout();
+}
+
+
+//============================================================================
+CFloatingWidgetTitleBar::~CFloatingWidgetTitleBar()
+{
+    delete d;
+}
+
+
+//============================================================================
+void CFloatingWidgetTitleBar::mousePressEvent(QMouseEvent* ev)
+{
+    if (ev->button() == Qt::LeftButton)
+    {
+        d->DragState = DraggingFloatingWidget;
+        d->FloatingWidget->startDragging(ev->pos(), d->FloatingWidget->size(), this);
+        return;
+    }
+    Super::mousePressEvent(ev);
+}
+
+
+//============================================================================
+void CFloatingWidgetTitleBar::mouseReleaseEvent(QMouseEvent* ev)
+{
+    d->DragState = DraggingInactive;
+    Super::mouseReleaseEvent(ev);
+}
+
+
+//============================================================================
+void CFloatingWidgetTitleBar::mouseMoveEvent(QMouseEvent* ev)
+{
+    if (!(ev->buttons() & Qt::LeftButton) || DraggingInactive == d->DragState)
+    {
+        d->DragState = DraggingInactive;
+        Super::mouseMoveEvent(ev);
+        return;
+    }
+
+    // move floating window
+    if (DraggingFloatingWidget == d->DragState)
+    {
+        d->FloatingWidget->moveFloating();
+        Super::mouseMoveEvent(ev);
+        return;
+    }
+    Super::mouseMoveEvent(ev);
+}
+
+
+//============================================================================
+void CFloatingWidgetTitleBar::enableCloseButton(bool Enable)
+{
+    d->CloseButton->setEnabled(Enable);
+}
+
+
+//============================================================================
+void CFloatingWidgetTitleBar::setTitle(const QString& Text)
+{
+    d->TitleLabel->setText(Text);
+}
+
+
+} // namespace ads

src/stylesheets/default_linux.css

@@ -0,0 +1,96 @@
+
+/*
+ * Default style sheet on Windows Platforms
+ * Note: Always use CSS-classes with and without "ads--" namespace to support Qt4 & Qt5
+ */
+
+ads--CDockContainerWidget
+{
+    background: palette(dark);
+}
+
+ads--CDockContainerWidget QSplitter::handle
+{
+    background: palette(dark);
+}
+
+ads--CDockAreaWidget
+{
+    background: palette(window);
+    border: 1px solid white;
+}
+
+ads--CDockAreaWidget #tabsMenuButton::menu-indicator
+{
+    image: none;
+}
+
+
+ads--CDockWidgetTab
+{
+    background: palette(window);
+    border-color: palette(light);
+    border-style: solid;
+    border-width: 0 1px 0 0;
+    padding: 0 0px;
+}
+
+ads--CDockWidgetTab[activeTab="true"]
+{
+    background: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:0.5, stop:0 palette(window), stop:1 palette(light));
+    /*background: palette(highlight);*/
+}
+
+ads--CDockWidgetTab QLabel
+{
+    color: palette(dark);
+}
+
+ads--CDockWidgetTab[activeTab="true"] QLabel
+{
+    color: palette(foreground);
+}
+
+ads--CDockWidget
+{
+    background: palette(light);
+    border-color: palette(light);
+    border-style: solid;
+    border-width: 1px 0 0 0;
+}
+
+#tabsMenuButton,
+#closeButton,
+#undockButton
+{
+	padding: 0px -2px;
+}
+
+
+QScrollArea#dockWidgetScrollArea
+{
+	padding: 0px;
+	border: none;
+}
+
+
+#tabCloseButton
+{
+        margin-top: 2px;
+        background: none;
+        border: none;
+        padding: 0px -2px;
+}
+
+#tabCloseButton:hover
+{
+        border: 1px solid rgba(0, 0, 0, 32);
+        background: rgba(0, 0, 0, 16);
+}
+
+#tabCloseButton:pressed
+{
+        background: rgba(0, 0, 0, 32);
+}
+
+