Add a new window decoration to MDISubWindows

data/themes/default/style.css

@@ -540,6 +540,40 @@ BBTCOView {
 	qproperty-textColor: rgb( 255, 255, 255 );
 }
 
+/* Subwindows in MDI-Area */
+SubWindow {
+	color: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1,
+						stop: 0 #4b525c, stop: 1.0 #31363d);
+	qproperty-activeColor: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1,
+						stop: 0 #33383e, stop: 1.0 #1a1c20);
+	qproperty-textShadowColor: rgb( 0, 0, 0 );
+	qproperty-borderColor: rgb( 0, 0, 0 );
+}
+
+/* Subwindow title text */
+SubWindow > QLabel {
+	color: rgb( 255, 255, 255 );
+	font-size: 12px;
+	font-style: normal;
+}
+
+/* SubWindow titlebar button */
+SubWindow > QPushButton {
+	background-color: rgba( 255, 255, 255, 0% );
+	border-width: 0px;
+	border-color: none;
+	border-style: none;
+}
+
+SubWindow > QPushButton:hover{
+	background-color: rgba( 255, 255, 255, 15% );
+	border-width: 1px;
+	border-color: rgba( 0, 0, 0, 20% );
+	border-style: solid;
+	border-radius: 2px;
+}
+
+
 /* Plugins */
 
 TripleOscillatorView Knob {

include/SubWindow.h

@@ -23,18 +23,19 @@
  * Boston, MA 02110-1301 USA.
  *
  */
-
-
 #ifndef SUBWINDOW_H
 #define SUBWINDOW_H
 
-
+#include <QEvent>
+#include <QGraphicsDropShadowEffect>
 #include <QMdiSubWindow>
-#include <QRect>
+#include <QLabel>
+#include <QPainter>
+#include <QPushButton>
+#include <QString>
 
 #include "export.h"
 
-
 class QMoveEvent;
 class QResizeEvent;
 class QWidget;
@@ -43,16 +44,43 @@ class QWidget;
 class EXPORT SubWindow : public QMdiSubWindow
 {
 	Q_OBJECT
+	Q_PROPERTY( QBrush activeColor READ activeColor WRITE setActiveColor )
+	Q_PROPERTY( QColor textShadowColor READ textShadowColor WRITE setTextShadowColor )
+	Q_PROPERTY( QColor borderColor READ borderColor WRITE setBorderColor )
+
 public:
-	SubWindow(QWidget *parent=NULL, Qt::WindowFlags windowFlags=0);
+	SubWindow( QWidget *parent = NULL, Qt::WindowFlags windowFlags = 0 );
 	// same as QWidet::normalGeometry, but works properly under X11 (see https://bugreports.qt.io/browse/QTBUG-256)
 	QRect getTrueNormalGeometry() const;
+	QBrush activeColor() const;
+	QColor textShadowColor() const;
+	QColor borderColor() const;
+	void setActiveColor( const QBrush & b );
+	void setTextShadowColor( const QColor &c );
+	void setBorderColor( const QColor &c );
+
 protected:
 	// hook the QWidget move/resize events to update the tracked geometry
-	virtual void moveEvent(QMoveEvent * event);
-	virtual void resizeEvent(QResizeEvent * event);
+	virtual void moveEvent( QMoveEvent * event );
+	virtual void resizeEvent( QResizeEvent * event );
+	virtual void paintEvent( QPaintEvent * pe );
+
 private:
+	const QSize m_buttonSize;
+	const int m_titleBarHeight;
+	QPushButton * m_closeBtn;
+	QPushButton * m_minimizeBtn;
+	QPushButton * m_maximizeBtn;
+	QPushButton * m_restoreBtn;
+	QBrush m_activeColor;
+	QColor m_textShadowColor;
+	QColor m_borderColor;
+	QPoint m_position;
 	QRect m_trackedNormalGeom;
+	QLabel * m_windowTitle;
+	QGraphicsDropShadowEffect * m_shadow;
+
+	static void elideText( QLabel *label, QString text );
 };
 
-#endif
+#endif

src/gui/SubWindow.cpp

@@ -1,4 +1,4 @@
-/*
+/*
  * SubWindow.cpp - Implementation of QMdiSubWindow that correctly tracks
  *   the geometry that windows should be restored to.
  *   Workaround for https://bugreports.qt.io/browse/QTBUG-256
@@ -26,42 +26,255 @@
 
 #include "SubWindow.h"
 
+#include <QMdiArea>
 #include <QMoveEvent>
 #include <QResizeEvent>
-#include <QWidget>
 
+#include "embed.h"
 
-SubWindow::SubWindow(QWidget *parent, Qt::WindowFlags windowFlags)
-  : QMdiSubWindow(parent, windowFlags)
+
+SubWindow::SubWindow( QWidget *parent, Qt::WindowFlags windowFlags ) :
+	QMdiSubWindow( parent, windowFlags ),
+	m_buttonSize( 17, 17 ),
+	m_titleBarHeight( 24 )
 {
 	// initialize the tracked geometry to whatever Qt thinks the normal geometry currently is.
 	// this should always work, since QMdiSubWindows will not start as maximized
 	m_trackedNormalGeom = normalGeometry();
+
+	// inits the colors
+	m_activeColor = Qt::SolidPattern;
+	m_textShadowColor = Qt::black;
+	m_borderColor = Qt::black;
+
+	// close, minimize, maximize and restore (after minimizing) buttons
+	m_closeBtn = new QPushButton( embed::getIconPixmap( "close" ), QString::null, this );
+	m_closeBtn->resize( m_buttonSize );
+	m_closeBtn->setFocusPolicy( Qt::NoFocus );
+	m_closeBtn->setToolTip( tr( "Close" ) );
+	connect( m_closeBtn, SIGNAL( clicked( bool ) ), this, SLOT( close() ) );
+
+	m_maximizeBtn = new QPushButton( embed::getIconPixmap( "maximize" ), QString::null, this );
+	m_maximizeBtn->resize( m_buttonSize );
+	m_maximizeBtn->setFocusPolicy( Qt::NoFocus );
+	m_maximizeBtn->setToolTip( tr( "Maximize" ) );
+	connect( m_maximizeBtn, SIGNAL( clicked( bool ) ), this, SLOT( showMaximized() ) );
+
+	m_minimizeBtn = new QPushButton( embed::getIconPixmap( "minimize" ), QString::null, this );
+	m_minimizeBtn->resize( m_buttonSize );
+	m_minimizeBtn->setFocusPolicy( Qt::NoFocus );
+	m_minimizeBtn->setToolTip( tr( "Minimize" ) );
+	connect( m_minimizeBtn, SIGNAL( clicked( bool ) ), this, SLOT( showMinimized() ) );
+
+	m_restoreBtn = new QPushButton( embed::getIconPixmap( "restore" ), QString::null, this );
+	m_restoreBtn->resize( m_buttonSize );
+	m_restoreBtn->setFocusPolicy( Qt::NoFocus );
+	m_restoreBtn->setToolTip( tr( "Restore" ) );
+	connect( m_restoreBtn, SIGNAL( clicked( bool ) ), this, SLOT( showNormal() ) );
+
+	// QLabel for the window title and the shadow effect
+	m_shadow = new QGraphicsDropShadowEffect();
+	m_shadow->setColor( m_textShadowColor );
+	m_shadow->setXOffset( 1 );
+	m_shadow->setYOffset( 1 );
+
+	m_windowTitle = new QLabel( this );
+	m_windowTitle->setFocusPolicy( Qt::NoFocus );
+	m_windowTitle->setGraphicsEffect( m_shadow );
+}
+
+
+
+
+void SubWindow::paintEvent( QPaintEvent * )
+{
+	QPainter p( this );
+	QRect rect( 0, 0, width(), m_titleBarHeight );
+	bool isActive = SubWindow::mdiArea()->activeSubWindow() == this;
+
+	p.fillRect( rect, isActive ? activeColor() : p.pen().brush() );
+
+	// window border
+	p.setPen( borderColor() );
+
+	// bottom, left, and right lines
+	p.drawLine( 0, height() - 1, width(), height() - 1 );
+	p.drawLine( 0, m_titleBarHeight, 0, height() - 1 );
+	p.drawLine( width() - 1, m_titleBarHeight, width() - 1, height() - 1 );
+
+	// window icon
+	QPixmap winicon( widget()->windowIcon().pixmap( m_buttonSize ) );
+	p.drawPixmap( 3, 3, m_buttonSize.width(), m_buttonSize.height(), winicon );
+}
+
+
+
+
+void SubWindow::elideText( QLabel *label, QString text )
+{
+	QFontMetrics metrix( label->font() );
+	int width = label->width() - 2;
+	QString clippedText = metrix.elidedText( text, Qt::ElideRight, width );
+	label->setText( clippedText );
 }
 
+
+
+
 QRect SubWindow::getTrueNormalGeometry() const
 {
 	return m_trackedNormalGeom;
 }
 
-void SubWindow::moveEvent(QMoveEvent * event)
+
+
+
+QBrush SubWindow::activeColor() const
+{
+	return m_activeColor;
+}
+
+
+
+
+QColor SubWindow::textShadowColor() const
 {
-	QMdiSubWindow::moveEvent(event);
+	return m_textShadowColor;
+}
+
+
+
+
+QColor SubWindow::borderColor() const
+{
+	return m_borderColor;
+}
+
+
+
+
+void SubWindow::setActiveColor( const QBrush & b )
+{
+	m_activeColor = b;
+}
+
+
+
+
+void SubWindow::setTextShadowColor( const QColor & c )
+{
+	m_textShadowColor = c;
+}
+
+
+
+
+void SubWindow::setBorderColor( const QColor &c )
+{
+	m_borderColor = c;
+}
+
+
+
+
+void SubWindow::moveEvent( QMoveEvent * event )
+{
+	QMdiSubWindow::moveEvent( event );
 	// if the window was moved and ISN'T minimized/maximized/fullscreen,
-	//   then save the current position
-	if (!isMaximized() && !isMinimized() && !isFullScreen())
+	// then save the current position
+	if( !isMaximized() && !isMinimized() && !isFullScreen() )
 	{
-		m_trackedNormalGeom.moveTopLeft(event->pos());
+		m_trackedNormalGeom.moveTopLeft( event->pos() );
 	}
 }
 
-void SubWindow::resizeEvent(QResizeEvent * event)
+
+
+
+void SubWindow::resizeEvent( QResizeEvent * event )
 {
-	QMdiSubWindow::resizeEvent(event);
+	// button adjustments
+	m_minimizeBtn->hide();
+	m_maximizeBtn->hide();
+	m_restoreBtn->hide();
+
+	const int rightSpace = 3;
+	const int buttonGap = 1;
+	const int menuButtonSpace = 24;
+
+	QPoint rightButtonPos( width() - rightSpace - m_buttonSize.width() , 3 );
+	QPoint middleButtonPos( width() - rightSpace - ( 2 * m_buttonSize.width() ) - buttonGap, 3 );
+	QPoint leftButtonPos( width() - rightSpace - ( 3 * m_buttonSize.width() ) - ( 2 * buttonGap ), 3 );
+
+	// the buttonBarWidth depends on the number of buttons.
+	// we need it to calculate the width of window title label
+	int buttonBarWidth = rightSpace + m_buttonSize.width();
+
+	// set the buttons on their positions.
+	// the close button is always needed and on the rightButtonPos
+	m_closeBtn->move( rightButtonPos );
+
+	// here we ask: is the Subwindow maximizable and/or minimizable
+	// then we set the buttons and show them if needed
+	if( windowFlags() & Qt::WindowMaximizeButtonHint )
+	{
+		buttonBarWidth = buttonBarWidth + m_buttonSize.width() + buttonGap;
+		m_maximizeBtn->move( middleButtonPos );
+		m_maximizeBtn->show();
+	}
+
+	if( windowFlags() & Qt::WindowMinimizeButtonHint )
+	{
+		buttonBarWidth = buttonBarWidth + m_buttonSize.width() + buttonGap;
+		if( m_maximizeBtn->isHidden() )
+		{
+			m_minimizeBtn->move( middleButtonPos );
+		}
+		else
+		{
+			m_minimizeBtn->move( leftButtonPos );
+		}
+		m_minimizeBtn->show();
+		m_restoreBtn->hide();
+		if( isMinimized() )
+		{
+			if( m_maximizeBtn->isHidden() )
+			{
+				m_restoreBtn->move( middleButtonPos );
+			}
+			else
+			{
+				m_restoreBtn->move( leftButtonPos );
+			}
+			m_restoreBtn->show();
+			m_minimizeBtn->hide();
+		}
+	}
+
+	// title QLabel adjustments
+	m_windowTitle->setAlignment( Qt::AlignHCenter );
+	m_windowTitle->setFixedWidth( widget()->width() - ( menuButtonSpace + buttonBarWidth ) );
+	m_windowTitle->move( menuButtonSpace,
+		( m_titleBarHeight / 2 ) - ( m_windowTitle->sizeHint().height() / 2 ) - 1 );
+
+	// if minimized we can't use widget()->width(). We have to hard code the width,
+	// as the width of all minimized windows is the same.
+	if( isMinimized() )
+	{
+		m_windowTitle->setFixedWidth( 120 );
+	}
+
+	// truncate the label string if the window is to small. Adds "..."
+	elideText( m_windowTitle, widget()->windowTitle() );
+	m_windowTitle->setTextInteractionFlags( Qt::NoTextInteraction );
+	m_windowTitle->adjustSize();
+
+	QMdiSubWindow::resizeEvent( event );
+
 	// if the window was resized and ISN'T minimized/maximized/fullscreen,
-	//   then save the current size
-	if (!isMaximized() && !isMinimized() && !isFullScreen())
+	// then save the current size
+	if( !isMaximized() && !isMinimized() && !isFullScreen() )
 	{
-		m_trackedNormalGeom.setSize(event->size());
+		m_trackedNormalGeom.setSize( event->size() );
 	}
-}
+}