Ensure there is valid context for DrawRectangle

[wxWidgets.git] / src / generic / treectlg.cpp

diff --git a/src/generic/treectlg.cpp b/src/generic/treectlg.cpp
index 7415dafd5049f8025343c5d5c46001a42285c0b7..d7193a9febe4380661f50f6e188580b8a453bb14 100644 (file)
--- a/src/generic/treectlg.cpp
+++ b/src/generic/treectlg.cpp
@@ -127,7 +127,7 @@ public:
 
     wxTreeFindTimer( wxGenericTreeCtrl *owner ) { m_owner = owner; }
 
 
     wxTreeFindTimer( wxGenericTreeCtrl *owner ) { m_owner = owner; }
 

-    virtual void Notify() { m_owner->m_findPrefix.clear(); }
+    virtual void Notify() { m_owner->ResetFindState(); }

 
 private:
     wxGenericTreeCtrl *m_owner;
 
 private:
     wxGenericTreeCtrl *m_owner;


@@ -423,8 +423,8 @@ BEGIN_EVENT_TABLE(wxTreeTextCtrl,wxTextCtrl)
 END_EVENT_TABLE()
 
 wxTreeTextCtrl::wxTreeTextCtrl(wxGenericTreeCtrl *owner,
 END_EVENT_TABLE()
 
 wxTreeTextCtrl::wxTreeTextCtrl(wxGenericTreeCtrl *owner,

-                               wxGenericTreeItem *item)
-              : m_itemEdited(item), m_startValue(item->GetText())
+                               wxGenericTreeItem *itm)
+              : m_itemEdited(itm), m_startValue(itm->GetText())

 {
     m_owner = owner;
     m_aboutToFinish = false;
 {
     m_owner = owner;
     m_aboutToFinish = false;


@@ -454,7 +454,7 @@ wxTreeTextCtrl::wxTreeTextCtrl(wxGenericTreeCtrl *owner,
     (void)Create(m_owner, wxID_ANY, m_startValue,
                  rect.GetPosition(), rect.GetSize());
 
     (void)Create(m_owner, wxID_ANY, m_startValue,
                  rect.GetPosition(), rect.GetSize());
 

-    SetSelection(-1, -1);
+    SelectAll();

 }
 
 void wxTreeTextCtrl::EndEdit(bool discardChanges)
 }
 
 void wxTreeTextCtrl::EndEdit(bool discardChanges)


@@ -956,6 +956,7 @@ void wxGenericTreeCtrl::Init()
     m_renameTimer = NULL;
 
     m_findTimer = NULL;
     m_renameTimer = NULL;
 
     m_findTimer = NULL;

+    m_findBell = 0;  // default is to not ring bell at all

 
     m_dropEffectAboveItem = false;
 
 
     m_dropEffectAboveItem = false;
 


@@ -997,7 +998,7 @@ bool wxGenericTreeCtrl::Create(wxWindow *parent,
 #endif
 
     if ( !wxControl::Create( parent, id, pos, size,
 #endif
 
     if ( !wxControl::Create( parent, id, pos, size,

-                             style|wxHSCROLL|wxVSCROLL,
+                             style|wxHSCROLL|wxVSCROLL|wxWANTS_CHARS,

                              validator,
                              name ) )
         return false;
                              validator,
                              name ) )
         return false;


@@ -1045,6 +1046,11 @@ wxGenericTreeCtrl::~wxGenericTreeCtrl()
         delete m_imageListButtons;
 }
 
         delete m_imageListButtons;
 }
 

+void wxGenericTreeCtrl::EnableBellOnNoMatch( bool on )
+{
+    m_findBell = on;
+}
+

 // -----------------------------------------------------------------------------
 // accessors
 // -----------------------------------------------------------------------------
 // -----------------------------------------------------------------------------
 // accessors
 // -----------------------------------------------------------------------------


@@ -1557,6 +1563,13 @@ void wxGenericTreeCtrl::ResetTextControl()
     m_textCtrl = NULL;
 }
 
     m_textCtrl = NULL;
 }
 

+void wxGenericTreeCtrl::ResetFindState()
+{
+    m_findPrefix.clear();
+    if ( m_findBell )
+        m_findBell = 1;
+}
+

 // find the first item starting with the given prefix after the given item
 wxTreeItemId wxGenericTreeCtrl::FindItem(const wxTreeItemId& idParent,
                                          const wxString& prefixOrig) const
 // find the first item starting with the given prefix after the given item
 wxTreeItemId wxGenericTreeCtrl::FindItem(const wxTreeItemId& idParent,
                                          const wxString& prefixOrig) const


@@ -1599,8 +1612,12 @@ wxTreeItemId wxGenericTreeCtrl::FindItem(const wxTreeItemId& idParent,
         {
             itemid = GetNext(itemid);
         }
         {
             itemid = GetNext(itemid);
         }

-        // If we haven't found the item, id.IsOk() will be false, as per
-        // documentation
+        // If we haven't found the item but wrapped back to the one we started
+        // from, id.IsOk() must be false
+        if ( itemid == idParent )
+        {
+            itemid = wxTreeItemId();
+        }

     }
 
     return itemid;
     }
 
     return itemid;


@@ -2054,7 +2071,8 @@ wxGenericTreeCtrl::TagAllChildrenUntilLast(wxGenericTreeItem *crt_item,
     if (crt_item==last_item)
         return true;
 
     if (crt_item==last_item)
         return true;
 

-    if (crt_item->HasChildren())
+    // We should leave the not shown children of collapsed items alone.
+    if (crt_item->HasChildren() && crt_item->IsExpanded())

     {
         wxArrayGenericTreeItems& children = crt_item->GetChildren();
         size_t count = children.GetCount();
     {
         wxArrayGenericTreeItems& children = crt_item->GetChildren();
         size_t count = children.GetCount();


@@ -2266,12 +2284,17 @@ void wxGenericTreeCtrl::ScrollTo(const wxTreeItemId &item)
 
     // update the control before scrolling it
     if (m_dirty)
 
     // update the control before scrolling it
     if (m_dirty)

-#if defined( __WXMSW__ ) || defined(__WXMAC__)
+    {
+#if defined( __WXMSW__ ) 

         Update();
         Update();

+#elif defined(__WXMAC__)
+        Update();
+        DoDirtyProcessing();

 #else
         DoDirtyProcessing();
 #endif
 #else
         DoDirtyProcessing();
 #endif

-
+    }
+        

     wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
 
     int itemY = gitem->GetY();
     wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
 
     int itemY = gitem->GetY();


@@ -2288,6 +2311,12 @@ void wxGenericTreeCtrl::ScrollTo(const wxTreeItemId &item)
     {
         // need to scroll up by enough to show this item fully
         itemY += itemHeight - clientHeight;
     {
         // need to scroll up by enough to show this item fully
         itemY += itemHeight - clientHeight;

+#ifdef __WXOSX__
+        // because itemY below will be divided by PIXELS_PER_UNIT it may
+        // be rounded down, with the result of the item still only being 
+        // partially visible, so make sure we are rounding up
+        itemY += PIXELS_PER_UNIT-1;
+#endif

     }
     else if ( itemY > start_y*PIXELS_PER_UNIT )
     {
     }
     else if ( itemY > start_y*PIXELS_PER_UNIT )
     {


@@ -2878,7 +2907,7 @@ wxGenericTreeCtrl::PaintLevel(wxGenericTreeItem *item,
                 yOrigin = abs(yOrigin);
                 GetClientSize(&width, &height);
 
                 yOrigin = abs(yOrigin);
                 GetClientSize(&width, &height);
 

-                // Move end points to the begining/end of the view?
+                // Move end points to the beginning/end of the view?

                 if (y_mid < yOrigin)
                     y_mid = yOrigin;
                 if (oldY > yOrigin + height)
                 if (y_mid < yOrigin)
                     y_mid = yOrigin;
                 if (oldY > yOrigin + height)


@@ -3293,21 +3322,28 @@ void wxGenericTreeCtrl::OnChar( wxKeyEvent &event )
             if ( !event.HasModifiers() &&
                  ((keyCode >= '0' && keyCode <= '9') ||
                   (keyCode >= 'a' && keyCode <= 'z') ||
             if ( !event.HasModifiers() &&
                  ((keyCode >= '0' && keyCode <= '9') ||
                   (keyCode >= 'a' && keyCode <= 'z') ||

-                  (keyCode >= 'A' && keyCode <= 'Z' )))
+                  (keyCode >= 'A' && keyCode <= 'Z') ||
+                  (keyCode == '_')))

             {
                 // find the next item starting with the given prefix
                 wxChar ch = (wxChar)keyCode;
             {
                 // find the next item starting with the given prefix
                 wxChar ch = (wxChar)keyCode;

+                wxTreeItemId id;

 
 

-                wxTreeItemId id = FindItem(m_current, m_findPrefix + ch);
-                if ( !id.IsOk() )
+                // if the same character is typed multiple times then go to the
+                // next entry starting with that character instead of searching
+                // for an item starting with multiple copies of this character,
+                // this is more useful and is how it works under Windows.
+                if ( m_findPrefix.length() == 1 && m_findPrefix[0] == ch )

                 {
                 {

-                    // no such item
-                    break;
+                    id = FindItem(m_current, ch);
+                }
+                else
+                {
+                    const wxString newPrefix(m_findPrefix + ch);
+                    id = FindItem(m_current, newPrefix);
+                    if ( id.IsOk() )
+                        m_findPrefix = newPrefix;

                 }
                 }

-
-                SelectItem(id);
-
-                m_findPrefix += ch;

 
                 // also start the timer to reset the current prefix if the user
                 // doesn't press any more alnum keys soon -- we wouldn't want
 
                 // also start the timer to reset the current prefix if the user
                 // doesn't press any more alnum keys soon -- we wouldn't want


@@ -3317,7 +3353,32 @@ void wxGenericTreeCtrl::OnChar( wxKeyEvent &event )
                     m_findTimer = new wxTreeFindTimer(this);
                 }
 
                     m_findTimer = new wxTreeFindTimer(this);
                 }
 

+                // Notice that we should start the timer even if we didn't find
+                // anything to make sure we reset the search state later.

                 m_findTimer->Start(wxTreeFindTimer::DELAY, wxTIMER_ONE_SHOT);
                 m_findTimer->Start(wxTreeFindTimer::DELAY, wxTIMER_ONE_SHOT);

+
+                if ( id.IsOk() )
+                {
+                    SelectItem(id);
+
+                    // Reset the bell flag if it had been temporarily disabled
+                    // before.
+                    if ( m_findBell )
+                        m_findBell = 1;
+                }
+                else // No such item
+                {
+                    // Signal it with a bell if enabled.
+                    if ( m_findBell == 1 )
+                    {
+                        ::wxBell();
+
+                        // Disable it for the next unsuccessful match, we only
+                        // beep once, this is usually enough and continuing to
+                        // do it would be annoying.
+                        m_findBell = -1;
+                    }
+                }

             }
             else
             {
             }
             else
             {


@@ -3422,11 +3483,7 @@ wxTextCtrl *wxGenericTreeCtrl::EditLabel(const wxTreeItemId& item,
     // question might just have been added and no screen
     // update taken place.
     if ( m_dirty )
     // question might just have been added and no screen
     // update taken place.
     if ( m_dirty )

-#if defined( __WXMSW__ ) || defined(__WXMAC__)
-        Update();
-#else

         DoDirtyProcessing();
         DoDirtyProcessing();

-#endif

 
     // TODO: use textCtrlClass here to create the control of correct class
     m_textCtrl = new wxTreeTextCtrl(this, itemEdit);
 
     // TODO: use textCtrlClass here to create the control of correct class
     m_textCtrl = new wxTreeTextCtrl(this, itemEdit);


@@ -3533,9 +3590,21 @@ void wxGenericTreeCtrl::OnMouse( wxMouseEvent &event )
         wxTreeEvent
             hevent(wxEVT_COMMAND_TREE_ITEM_GETTOOLTIP,  this, hoverItem);
 
         wxTreeEvent
             hevent(wxEVT_COMMAND_TREE_ITEM_GETTOOLTIP,  this, hoverItem);
 

-        if ( GetEventHandler()->ProcessEvent(hevent) && hevent.IsAllowed() )
+        // setting a tooltip upon leaving a view is getting the tooltip displayed
+        // on the neighbouring view ...
+#ifdef __WXOSX__
+        if ( event.Leaving() )
+            SetToolTip(NULL);
+        else
+#endif
+        if ( GetEventHandler()->ProcessEvent(hevent) )

         {
         {

-            SetToolTip(hevent.m_label);
+            // If the user permitted the tooltip change, update it, otherwise
+            // remove any old tooltip we might have.
+            if ( hevent.IsAllowed() )
+                SetToolTip(hevent.m_label);
+            else
+                SetToolTip(NULL);

         }
     }
 #endif
         }
     }
 #endif


@@ -3762,7 +3831,14 @@ void wxGenericTreeCtrl::OnMouse( wxMouseEvent &event )
             // ==> LeftDown() || LeftDClick()
             if ( event.LeftDown() )
             {
             // ==> LeftDown() || LeftDClick()
             if ( event.LeftDown() )
             {

-                m_lastOnSame = item == m_current;
+                // If we click on an already selected item but do it to return
+                // the focus to the control, it shouldn't start editing the
+                // item label because it's too easy to start editing
+                // accidentally (and also because nobody else does it like
+                // this). So only set this flag, used to decide whether we
+                // should start editing the label later, if we already have
+                // focus.
+                m_lastOnSame = item == m_current && HasFocus();

             }
 
             if ( flags & wxTREE_HITTEST_ONITEMBUTTON )
             }
 
             if ( flags & wxTREE_HITTEST_ONITEMBUTTON )


@@ -4003,11 +4079,24 @@ bool wxGenericTreeCtrl::SetForegroundColour(const wxColour& colour)
     return true;
 }
 
     return true;
 }
 

-// Process the tooltip event, to speed up event processing.
-// Doesn't actually get a tooltip.

 void wxGenericTreeCtrl::OnGetToolTip( wxTreeEvent &event )
 {
 void wxGenericTreeCtrl::OnGetToolTip( wxTreeEvent &event )
 {

-    event.Veto();
+#if wxUSE_TOOLTIPS
+    wxTreeItemId itemId = event.GetItem();
+    const wxGenericTreeItem* const pItem = (wxGenericTreeItem*)itemId.m_pItem;
+
+    // Check if the item fits into the client area:
+    if ( pItem->GetX() + pItem->GetWidth() > GetClientSize().x )
+    {
+        // If it doesn't, show its full text in the tooltip.
+        event.SetLabel(pItem->GetText());
+    }
+    else
+#endif // wxUSE_TOOLTIPS
+    {
+        // veto processing the event, nixing any tooltip
+        event.Veto();
+    }

 }
 
 
 }