Add an optional horizontal scrollbar to the main view window. Should resolve Feature #2549.

- TableSubviews and DialogueSubviews now provide size hints
- Option to stop the growth of the window at the screen boundary for multi-monitor setup with different resolution.
- Three options:
  Grow Only: No change to current, except the use of size hints
  Scrollbar Only: Simple addition of a scrollbar, the view window does not grow
  Grow then Scroll: Window grows as per current behaviour. The scrollbar appears once it cannot grow any further.

apps/opencs/model/settings/usersettings.cpp

@@ -143,6 +143,20 @@ void CSMSettings::UserSettings::buildSettingModelDefaults()
         minWidth->setDefaultValue (325);
         minWidth->setRange (50, 10000);
         minWidth->setToolTip ("Minimum width of subviews.");
+
+        QString defaultScroll = "Scrollbar Only";
+        QStringList scrollValues = QStringList() << defaultScroll << "Grow Only" << "Grow then Scroll";
+
+        Setting *mainwinScroll = createSetting (Type_RadioButton, "mainwindow-scrollbar",
+            "Add a horizontal scrollbar to the main view window.");
+        mainwinScroll->setDefaultValue (defaultScroll);
+        mainwinScroll->setDeclaredValues (scrollValues);
+
+        Setting *grow = createSetting (Type_CheckBox, "grow-limit", "Grow Limit Screen");
+        grow->setDefaultValue ("false");
+        grow->setToolTip ("When \"Grow then Scroll\" option is selected, the window size grows to"
+            " the width of the virtual desktop. \nIf this option is selected the the window growth"
+            "is limited to the current screen.");
     }
 
     declareSection ("records", "Records");

apps/opencs/view/doc/subview.cpp

@@ -43,3 +43,19 @@ void CSVDoc::SubView::closeRequest()
 {
     emit closeRequest (this);
 }
+
+CSVDoc::SizeHintWidget::SizeHintWidget(QWidget *parent) : QWidget(parent)
+{}
+
+CSVDoc::SizeHintWidget::~SizeHintWidget()
+{}
+
+QSize CSVDoc::SizeHintWidget::sizeHint() const
+{
+    return mSize;
+}
+
+void CSVDoc::SizeHintWidget::setSizeHint(const QSize &size)
+{
+    mSize = size;
+}

apps/opencs/view/doc/subview.hpp

@@ -8,6 +8,7 @@
 #include "subviewfactory.hpp"
 
 #include <QDockWidget>
+#include <QSize>
 
 class QUndoStack;
 
@@ -70,6 +71,18 @@ namespace CSVDoc
 
             void closeRequest();
     };
+
+    class SizeHintWidget : public QWidget
+    {
+            QSize mSize;
+
+        public:
+            SizeHintWidget(QWidget *parent = 0);
+            ~SizeHintWidget();
+
+            virtual QSize sizeHint() const;
+            void setSizeHint(const QSize &size);
+    };
 }
 
 #endif

apps/opencs/view/doc/view.cpp

@@ -9,6 +9,10 @@
 #include <QDockWidget>
 #include <QtGui/QApplication>
 #include <QDesktopWidget>
+#include <QScrollArea>
+#include <QHBoxLayout>
+#include <QDesktopWidget>
+#include <QScrollBar>
 
 #include "../../model/doc/document.hpp"
 #include "../../model/settings/usersettings.hpp"
@@ -16,6 +20,7 @@
 #include "../../model/world/idtable.hpp"
 
 #include "../world/subviews.hpp"
+#include "../world/tablesubview.hpp"
 
 #include "../tools/subviews.hpp"
 
@@ -334,8 +339,15 @@ void CSVDoc::View::updateTitle()
 void CSVDoc::View::updateSubViewIndicies(SubView *view)
 {
     if(view && mSubViews.contains(view))
+    {
         mSubViews.removeOne(view);
 
+        // adjust (reduce) the scroll area (even floating), except when it is "Scrollbar Only"
+        CSMSettings::UserSettings &settings = CSMSettings::UserSettings::instance();
+        if(settings.settingValue ("window/mainwindow-scrollbar") == "Grow then Scroll")
+            updateScrollbar();
+    }
+
     CSMSettings::UserSettings &userSettings = CSMSettings::UserSettings::instance();
 
     bool hideTitle = userSettings.setting ("window/hide-subview", QString ("false"))=="true" &&
@@ -381,7 +393,7 @@ void CSVDoc::View::updateActions()
 
 CSVDoc::View::View (ViewManager& viewManager, CSMDoc::Document *document, int totalViews)
     : mViewManager (viewManager), mDocument (document), mViewIndex (totalViews-1),
-      mViewTotal (totalViews)
+      mViewTotal (totalViews), mScroll(0), mScrollbarOnly(false)
 {
     int width = CSMSettings::UserSettings::instance().settingValue
                                     ("window/default-width").toInt();
@@ -400,7 +412,18 @@ CSVDoc::View::View (ViewManager& viewManager, CSMDoc::Document *document, int to
 
     mSubViewWindow.setDockOptions (QMainWindow::AllowNestedDocks);
 
-    setCentralWidget (&mSubViewWindow);
+    CSMSettings::UserSettings &settings = CSMSettings::UserSettings::instance();
+    if(settings.settingValue ("window/mainwindow-scrollbar") == "Grow Only")
+    {
+        setCentralWidget (&mSubViewWindow);
+    }
+    else
+    {
+        mScroll = new QScrollArea(this);
+        mScroll->setWidgetResizable(true);
+        mScroll->setWidget(&mSubViewWindow);
+        setCentralWidget(mScroll);
+    }
 
     mOperations = new Operations;
     addDockWidget (Qt::BottomDockWidgetArea, mOperations);
@@ -527,6 +550,59 @@ void CSVDoc::View::addSubView (const CSMWorld::UniversalId& id, const std::strin
 
     view->setStatusBar (mShowStatusBar->isChecked());
 
+    // Work out how to deal with additional subviews
+    //
+    // Policy for "Grow then Scroll":
+    //
+    // - Increase the horizontal width of the mainwindow until it becomes greater than or equal
+    //   to the screen (monitor) width.
+    // - Move the mainwindow position sideways if necessary to fit within the screen.
+    // - Any more additions increases the size of the mSubViewWindow (horizontal scrollbar
+    //   should become visible)
+    // - Move the scroll bar to the newly added subview
+    //
+    CSMSettings::UserSettings &settings = CSMSettings::UserSettings::instance();
+    QString mainwinScroll = settings.settingValue ("window/mainwindow-scrollbar");
+    if (mainwinScroll.isEmpty() || mainwinScroll == "Scrollbar Only")
+        mScrollbarOnly = true;
+    else if(mainwinScroll == "Grow Only")
+        mScrollbarOnly = false;
+    else
+        mScrollbarOnly = false;
+
+    QDesktopWidget *dw = QApplication::desktop();
+    QRect rect;
+    if(settings.settingValue ("window/grow-limit") == "true")
+        rect = dw->screenGeometry(this);
+    else
+        rect = dw->screenGeometry(dw->screen(dw->screenNumber(this)));
+
+    if (!mScrollbarOnly && mScroll && mSubViews.size() > 1)
+    {
+        int newWidth = width()+minWidth;
+        int frameWidth = frameGeometry().width() - width();
+        if (newWidth+frameWidth <= rect.width())
+        {
+            resize(newWidth, height());
+            // WARNING: below code assumes that new subviews are added to the right
+            if (x() > rect.width()-(newWidth+frameWidth))
+                move(rect.width()-(newWidth+frameWidth), y()); // shift left to stay within the screen
+        }
+        else
+        {
+            // full width
+            resize(rect.width()-frameWidth, height());
+            mSubViewWindow.setMinimumWidth(mSubViewWindow.width()+minWidth);
+            move(0, y());
+        }
+
+        // Make the new subview visible, setFocus() or raise() don't seem to work
+        // On Ubuntu the scrollbar does not go right to the end, even if using
+        // mScroll->horizontalScrollBar()->setValue(mScroll->horizontalScrollBar()->maximum());
+        if (mSubViewWindow.width() > rect.width())
+            mScroll->horizontalScrollBar()->setValue(mSubViewWindow.width());
+    }
+
     mSubViewWindow.addDockWidget (Qt::TopDockWidgetArea, view);
 
     updateSubViewIndicies();
@@ -774,6 +850,48 @@ void CSVDoc::View::updateUserSetting (const QString &name, const QStringList &li
     {
         subView->updateUserSetting (name, list);
     }
+
+    if (name=="window/mainwindow-scrollbar")
+    {
+        if(list.at(0) != "Grow Only")
+        {
+            if (mScroll)
+            {
+                if (list.at(0).isEmpty() || list.at(0) == "Scrollbar Only")
+                {
+                    mScrollbarOnly = true;
+                    mSubViewWindow.setMinimumWidth(0);
+                }
+                else
+                {
+                    if(!mScrollbarOnly)
+                        return;
+
+                    mScrollbarOnly = false;
+                    updateScrollbar();
+                }
+            }
+            else
+            {
+                mScroll = new QScrollArea(this);
+                mScroll->setWidgetResizable(true);
+                mScroll->setWidget(&mSubViewWindow);
+                setCentralWidget(mScroll);
+            }
+        }
+        else
+        {
+            if (mScroll)
+            {
+                mScroll->takeWidget();
+                setCentralWidget (&mSubViewWindow);
+                mScroll->deleteLater();
+                mScroll = 0;
+            }
+            else
+                return;
+        }
+    }
 }
 
 void CSVDoc::View::toggleShowStatusBar (bool show)
@@ -815,3 +933,26 @@ void CSVDoc::View::closeRequest (SubView *subView)
     else if (mViewManager.closeRequest (this))
         mViewManager.removeDocAndView (mDocument);
 }
+
+void CSVDoc::View::updateScrollbar()
+{
+    QRect rect;
+    QWidget *topLevel = QApplication::topLevelAt(pos());
+    if (topLevel)
+        rect = topLevel->rect();
+    else
+        rect = this->rect();
+
+    int newWidth = 0;
+    for (int i = 0; i < mSubViews.size(); ++i)
+    {
+        newWidth += mSubViews[i]->width();
+    }
+
+    int frameWidth = frameGeometry().width() - width();
+
+    if ((newWidth+frameWidth) >= rect.width())
+        mSubViewWindow.setMinimumWidth(newWidth);
+    else
+        mSubViewWindow.setMinimumWidth(0);
+}

apps/opencs/view/doc/view.hpp

@@ -10,6 +10,7 @@
 
 class QAction;
 class QDockWidget;
+class QScrollArea;
 
 namespace CSMDoc
 {
@@ -47,6 +48,8 @@ namespace CSVDoc
             SubViewFactoryManager mSubViewFactory;
             QMainWindow mSubViewWindow;
             GlobalDebugProfileMenu *mGlobalDebugProfileMenu;
+            QScrollArea *mScroll;
+            bool mScrollbarOnly;
 
 
             // not implemented
@@ -87,6 +90,8 @@ namespace CSVDoc
             /// User preference function
             void resizeViewHeight (int height);
 
+            void updateScrollbar();
+
         public:
 
             View (ViewManager& viewManager, CSMDoc::Document *document, int totalViews);

apps/opencs/view/world/dialoguesubview.cpp

@@ -20,6 +20,8 @@
 #include <QPushButton>
 #include <QToolButton>
 #include <QHeaderView>
+#include <QApplication>
+#include <QDesktopWidget>
 
 #include "../../model/world/nestedtableproxymodel.hpp"
 #include "../../model/world/columnbase.hpp"
@@ -581,7 +583,15 @@ CSVWorld::DialogueSubView::DialogueSubView (const CSMWorld::UniversalId& id, CSM
 
     changeCurrentId(id.getId());
 
-    QWidget *mainWidget = new QWidget(this);
+    //QWidget *mainWidget = new QWidget(this);
+    CSVDoc::SizeHintWidget *mainWidget = new CSVDoc::SizeHintWidget;
+
+    const QRect rect = QApplication::desktop()->screenGeometry(this);
+    int frameHeight = 40; // set a reasonable default
+    QWidget *topLevel = QApplication::topLevelAt(pos());
+    if (topLevel)
+        frameHeight = topLevel->frameGeometry().height() - topLevel->height();
+    mainWidget->setSizeHint(QSize(400, rect.height()-frameHeight)); // FIXME: 400
 
     QHBoxLayout *buttonsLayout = new QHBoxLayout;
     QToolButton* prevButton = new QToolButton(mainWidget);

apps/opencs/view/world/tablesubview.cpp

@@ -3,6 +3,9 @@
 
 #include <QVBoxLayout>
 #include <QEvent>
+#include <QHeaderView>
+#include <QApplication>
+#include <QDesktopWidget>
 
 #include "../../model/doc/document.hpp"
 #include "../../model/world/tablemimedata.hpp"
@@ -30,11 +33,18 @@ CSVWorld::TableSubView::TableSubView (const CSMWorld::UniversalId& id, CSMDoc::D
 
     layout->insertWidget (0, mFilterBox);
 
-    QWidget *widget = new QWidget;
+    CSVDoc::SizeHintWidget *widget = new CSVDoc::SizeHintWidget;
 
     widget->setLayout (layout);
 
     setWidget (widget);
+    // prefer height of the screen and full width of the table
+    const QRect rect = QApplication::desktop()->screenGeometry(this);
+    int frameHeight = 40; // set a reasonable default
+    QWidget *topLevel = QApplication::topLevelAt(pos());
+    if (topLevel)
+        frameHeight = topLevel->frameGeometry().height() - topLevel->height();
+    widget->setSizeHint(QSize(mTable->horizontalHeader()->length(), rect.height()-frameHeight));
 
     connect (mTable, SIGNAL (editRequest (const CSMWorld::UniversalId&, const std::string&)),
         this, SLOT (editRequest (const CSMWorld::UniversalId&, const std::string&)));