X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/f46e630ddaaf5716cd1a1ce0c389ff66dcd76f85..c6bccbf6de33ba907f1cddfa64dadb8cfeea4d2c:/src/dolphintabpage.h

diff --git a/src/dolphintabpage.h b/src/dolphintabpage.h
index 63a246328..a8c1ba311 100644
--- a/src/dolphintabpage.h
+++ b/src/dolphintabpage.h
@@ -1,5 +1,6 @@
 /*
  * SPDX-FileCopyrightText: 2014 Emmanuel Pescosta <emmanuelpescosta099@gmail.com>
+ * SPDX-FileCopyrightText: 2020 Felix Ernst <fe.a.ernst@gmail.com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
@@ -10,11 +11,18 @@
 #include <QPointer>
 #include <QUrl>
 #include <QWidget>
+#include <QSplitter>
 
 class DolphinNavigatorsWidgetAction;
 class DolphinViewContainer;
-class QSplitter;
+class QVariantAnimation;
 class KFileItemList;
+class DolphinTabPageSplitter;
+
+enum Animated {
+    WithAnimation,
+    WithoutAnimation
+};
 
 class DolphinTabPage : public QWidget
 {
@@ -36,9 +44,15 @@ public:
     /**
      * Enables or disables the split view mode.
      *
-     * If \a enabled is true, it creates a secondary view with the url of the primary view.
+     * @param enabled      If true, creates a secondary viewContainer in this tab.
+     *                     Otherwise deletes it.
+     * @param animated     Decides whether the effects of this method call should
+     *                     happen instantly or be transitioned to smoothly.
+     * @param secondaryUrl If \p enabled is true, the new viewContainer will be opened at this
+     *                     parameter. The default value will set the Url of the new viewContainer
+     *                     to be the same as the existing one.
      */
-    void setSplitViewEnabled(bool enabled, const QUrl &secondaryUrl = QUrl());
+    void setSplitViewEnabled(bool enabled, Animated animated, const QUrl &secondaryUrl = QUrl());
 
     /**
      * @return The primary view container.
@@ -80,19 +94,8 @@ public:
      */
     void disconnectNavigators();
 
-    /**
-     * Calls resizeNavigators() when a watched object is resized.
-     */
-    bool eventFilter(QObject *watched, QEvent *event) override;
-
     void insertNavigatorsWidget(DolphinNavigatorsWidgetAction *navigatorsWidget);
 
-    /**
-     * Notify the connected DolphinNavigatorsWidgetAction of geometry changes which it
-     * needs for visual alignment.
-     */
-    void resizeNavigators() const;
-
     /**
      * Marks the items indicated by \p urls to get selected after the
      * directory DolphinView::url() has been loaded. Note that nothing
@@ -126,27 +129,29 @@ public:
      */
     void restoreState(const QByteArray& state);
 
-    /**
-     * Restores all tab related properties (urls, splitter layout, ...) from
-     * the given \a state.
-     *
-     * @deprecated The first tab state version has no version number, we keep
-     *             this method to restore old states (<= Dolphin 4.14.x).
-     */
-    Q_DECL_DEPRECATED void restoreStateV1(const QByteArray& state);
-
     /**
      * Set whether the tab page is active
      *
      */
     void setActive(bool active);
 
-signals:
+Q_SIGNALS:
     void activeViewChanged(DolphinViewContainer* viewContainer);
     void activeViewUrlChanged(const QUrl& url);
     void splitterMoved(int pos, int index);
 
-private slots:
+private Q_SLOTS:
+    /**
+     * Deletes all zombie viewContainers that were used for the animation
+     * and resets the minimum size of the others to a sane value.
+     */
+    void slotAnimationFinished();
+
+    /**
+     * This method is called for every frame of the m_expandViewAnimation.
+     */
+    void slotAnimationValueChanged(const QVariant &value);
+
     /**
      * Handles the view activated event.
      *
@@ -170,16 +175,59 @@ private:
      */
     DolphinViewContainer* createViewContainer(const QUrl& url) const;
 
+    /**
+     * Starts an animation that transitions between split view mode states.
+     *
+     * One of the viewContainers is always being expanded when toggling so
+     * this method can animate both opening and closing of viewContainers.
+     * @param expandingContainer The container that will increase in size
+     *                           over the course of the animation.
+     */
+    void startExpandViewAnimation(DolphinViewContainer *expandingContainer);
+
 private:
-    QSplitter* m_splitter;
+    DolphinTabPageSplitter *m_splitter;
 
     QPointer<DolphinNavigatorsWidgetAction> m_navigatorsWidget;
     QPointer<DolphinViewContainer> m_primaryViewContainer;
     QPointer<DolphinViewContainer> m_secondaryViewContainer;
 
+    DolphinViewContainer *m_expandingContainer;
+    QPointer<QVariantAnimation> m_expandViewAnimation;
+
     bool m_primaryViewActive;
     bool m_splitViewEnabled;
     bool m_active;
 };
 
+class DolphinTabPageSplitterHandle : public QSplitterHandle
+{
+    Q_OBJECT
+
+public:
+    explicit DolphinTabPageSplitterHandle(Qt::Orientation orientation, QSplitter *parent);
+
+protected:
+    bool event(QEvent *event) override;
+
+private:
+    void resetSplitterSizes();
+
+    // Sometimes QSplitterHandle doesn't receive MouseButtonDblClick event.
+    // We can detect that MouseButtonDblClick event should have been
+    // received if we receive two MouseButtonRelease events in a row.
+    bool m_mouseReleaseWasReceived;
+};
+
+class DolphinTabPageSplitter : public QSplitter
+{
+    Q_OBJECT
+
+public:
+    explicit DolphinTabPageSplitter(Qt::Orientation orientation, QWidget *parent);
+
+protected:
+    QSplitterHandle* createHandle() override;
+};
+
 #endif // DOLPHIN_TAB_PAGE_H