quick: Implement separator support

you can now drag separators in the QML example

src/private/multisplitter/CMakeLists.txt

@@ -39,7 +39,9 @@ if (BUILD_MULTISPLITTER_QTQUICK_FRONTEND)
     add_definitions(-DKDMULTISPLITTER_QTQUICK)
 endif()
 
-add_library(kddockwidgets_multisplitter SHARED ${MULTISPLITTER_SRCS})
+qt5_add_resources(MULTISPLITTER_RESOURCES ${CMAKE_CURRENT_SOURCE_DIR}/multisplitter.qrc)
+
+add_library(kddockwidgets_multisplitter SHARED ${MULTISPLITTER_SRCS} ${MULTISPLITTER_RESOURCES})
 add_library(KDAB::kddockwidgets_multisplitter ALIAS kddockwidgets_multisplitter)
 target_link_libraries(kddockwidgets_multisplitter Qt5::Core Qt5::Widgets)
 

src/private/multisplitter/Separator.cpp

@@ -41,7 +41,7 @@ struct Separator::Private
     Private(Widget *host)
         : m_hostWidget(host) {}
 
-    Qt::Orientation orientation;
+    Qt::Orientation orientation = Qt::Horizontal;
     QRect geometry;
     int lazyPosition = 0;
     // SeparatorOptions m_options; TODO: Have a Layouting::Config

src/private/multisplitter/Separator_p.h

@@ -54,7 +54,6 @@ public:
 
     ///@brief Returns whether we're dragging a separator. Can be useful for the app to stop other work while we're not in the final size
     static bool isResizing();
-
     virtual Widget* asWidget() = 0;
 
 protected:

src/private/multisplitter/Separator_quick.cpp

@@ -23,6 +23,8 @@
 #include "Logging_p.h"
 #include "Item_p.h"
 
+#include <QTimer>
+
 using namespace Layouting;
 
 namespace Layouting {
@@ -34,7 +36,8 @@ class RubberBand : public QQuickItem
 public:
     RubberBand(Layouting::Widget *parent)
         : QQuickItem(parent ? qobject_cast<QQuickItem*>(parent->asQObject()) : nullptr)
-        , Layouting::Widget_quick(this) {
+        , Layouting::Widget_quick(this)
+    {
     }
 };
 
@@ -45,6 +48,15 @@ SeparatorQuick::SeparatorQuick(Layouting::Widget *parent)
     , Separator(parent)
     , Layouting::Widget_quick(this)
 {
+    createQQuickItem(QStringLiteral(":/kddockwidgets/multisplitter/qml/Separator.qml"), this);
+
+    // Only set on Separator::init(), so single-shot
+    QTimer::singleShot(0, this, &SeparatorQuick::isVerticalChanged);
+}
+
+bool SeparatorQuick::isVertical() const
+{
+    return Separator::isVertical();
 }
 
 Layouting::Widget *SeparatorQuick::createRubberBand(Layouting::Widget *parent)
@@ -61,3 +73,24 @@ Widget *SeparatorQuick::asWidget()
 {
     return this;
 }
+
+void SeparatorQuick::onMousePressed()
+{
+    Separator::onMousePress();
+}
+
+void SeparatorQuick::onMouseMoved(QPointF localPos)
+{
+    const QPointF pos = QQuickItem::mapToItem(parentItem(), localPos);
+    Separator::onMouseMove(pos.toPoint());
+}
+
+void SeparatorQuick::onMouseReleased()
+{
+    Separator::onMouseReleased();
+}
+
+void SeparatorQuick::onMouseDoubleClicked()
+{
+    Separator::onMouseDoubleClick();
+}

src/private/multisplitter/Separator_quick.h

@@ -35,12 +35,25 @@ class MULTISPLITTER_EXPORT SeparatorQuick
         , public Layouting::Widget_quick
 {
     Q_OBJECT
+    Q_PROPERTY(bool isVertical READ isVertical NOTIFY isVerticalChanged)
 public:
     explicit SeparatorQuick(Layouting::Widget *parent = nullptr);
-protected:
 
+    bool isVertical() const;
+
+protected:
     Widget* createRubberBand(Widget *parent) override;
     Widget *asWidget() override;
+
+public:
+    // Interface with QML:
+    Q_INVOKABLE void onMousePressed();
+    Q_INVOKABLE void onMouseMoved(QPointF localPos);
+    Q_INVOKABLE void onMouseReleased();
+    Q_INVOKABLE void onMouseDoubleClicked();
+Q_SIGNALS:
+    // constant but it's only set after Separator::init
+    void isVerticalChanged();
 };
 
 }

src/private/multisplitter/multisplitter.qrc

@@ -0,0 +1,5 @@
+<RCC>
+    <qresource prefix="/kddockwidgets/multisplitter/">
+        <file>qml/Separator.qml</file>
+    </qresource>
+</RCC>

src/private/multisplitter/qml/Separator.qml

@@ -0,0 +1,30 @@
+import QtQuick 2.6
+
+Rectangle {
+    id: root
+    anchors.fill: parent
+    color: "yellow"
+
+    readonly property QtObject kddwSeparator: parent
+
+    MouseArea {
+        cursorShape: kddwSeparator ? (kddwSeparator.isVertical ? Qt.SizeVerCursor : Qt.SizeHorCursor)
+                                   : Qt.SizeHorCursor
+        anchors.fill: parent
+        onPressed: {
+            kddwSeparator.onMousePressed();
+        }
+
+        onReleased: {
+            kddwSeparator.onMouseReleased();
+        }
+
+        onPositionChanged: {
+            kddwSeparator.onMouseMoved(Qt.point(mouse.x, mouse.y));
+        }
+
+        onDoubleClicked: {
+            kddwSeparator.onMouseDoubleClicked();
+        }
+    }
+}