added copying selection to clipboard; fixes to selection making

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@20861 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/htmlcell.cpp

@@ -32,6 +32,30 @@
 #include "wx/settings.h"
 #include <stdlib.h>
 
+//-----------------------------------------------------------------------------
+// Helper classes
+//-----------------------------------------------------------------------------
+
+void wxHtmlSelection::Set(const wxPoint& fromPos, wxHtmlCell *fromCell,
+                          const wxPoint& toPos, wxHtmlCell *toCell)
+{
+    m_fromCell = fromCell;
+    m_toCell = toCell;
+    m_fromPos = fromPos;
+    m_toPos = toPos;
+}
+
+void wxHtmlSelection::Set(wxHtmlCell *fromCell, wxHtmlCell *toCell)
+{
+    wxPoint p1 = fromCell ? fromCell->GetAbsPos() : wxDefaultPosition;
+    wxPoint p2 = toCell ? toCell->GetAbsPos() : wxDefaultPosition;
+    if ( toCell )
+    {
+        p2.x += toCell->GetWidth()-1;
+        p2.y += toCell->GetHeight()-1;
+    }
+    Set(p1, fromCell, p2, toCell);
+}
 
 //-----------------------------------------------------------------------------
 // wxHtmlCell
@@ -148,6 +172,54 @@ wxPoint wxHtmlCell::GetAbsPos() const
     return p;
 }
     
+unsigned wxHtmlCell::GetDepth() const
+{
+    unsigned d = 0;
+    for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
+        d++;
+    return d;
+}
+    
+bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
+{
+    const wxHtmlCell *c1 = this;
+    const wxHtmlCell *c2 = cell;
+    unsigned d1 = GetDepth();
+    unsigned d2 = cell->GetDepth();
+
+    if ( d1 > d2 )
+        for (; d1 != d2; d1-- )
+            c1 = c1->m_Parent;
+    else if ( d1 < d2 )
+        for (; d1 != d2; d2-- )
+            c2 = c2->m_Parent;
+
+    if ( cell == this )
+        return true;
+
+    while ( c1 && c2 )
+    {
+        if ( c1->m_Parent == c2->m_Parent )
+        {
+            while ( c1 )
+            {
+                if ( c1 == c2 )
+                    return true;
+                c1 = c1->GetNext();
+            }            
+            return false;
+        }
+        else
+        {
+            c1 = c1->m_Parent;
+            c2 = c2->m_Parent;
+        }
+    }
+
+    wxFAIL_MSG(_T("Cells are in different trees"));
+    return false;
+}
+
 
 //-----------------------------------------------------------------------------
 // wxHtmlWordCell
@@ -183,10 +255,18 @@ void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
         dc.SetTextBackground(state.GetBgColour());
     }
 
+    // FIXME - use selection
     dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
 }
     
 
+wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *sel) const
+{
+    // FIXME - use selection
+    return m_Word;
+}
+
+
 
 //-----------------------------------------------------------------------------
 // wxHtmlContainerCell
@@ -266,7 +346,7 @@ bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak, int* known_pagebreaks,
 
     else
     {
-        wxHtmlCell *c = GetFirstCell();
+        wxHtmlCell *c = GetFirstChild();
         bool rt = FALSE;
         int pbrk = *pagebreak - m_PosY;
 
@@ -718,19 +798,31 @@ void wxHtmlContainerCell::GetHorizontalConstraints(int *left, int *right) const
     
 wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
 {
-    if (m_Cells)
+    if ( m_Cells )
-        return m_Cells->GetFirstTerminal();
+    {
-    else
+        wxHtmlCell *c2;
+        for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
+        {
+            c2 = c->GetFirstTerminal();
+            if ( c2 )
+                return c2;
+        }
+    }
     return NULL;
 }
 
 wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
 {
-    if (m_Cells)
+    if ( m_Cells )
     {
-        wxHtmlCell *c;
+        wxHtmlCell *c, *c2 = NULL;
-        for (c = m_Cells; c->GetNext(); c = c->GetNext()) {}
+        // most common case first:
+        c = m_LastCell->GetLastTerminal();
+        if ( c )
             return c;
+        for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
+            c2 = c->GetLastTerminal();
+        return c2;
     }
     else
         return NULL;
@@ -864,4 +956,44 @@ void wxHtmlWidgetCell::Layout(int w)
     wxHtmlCell::Layout(w);
 }
 
+
+
+// ----------------------------------------------------------------------------
+// wxHtmlTerminalCellsInterator
+// ----------------------------------------------------------------------------
+
+const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
+{
+    if ( !m_pos )
+        return NULL;
+
+    do
+    {
+        if ( m_pos == m_to )
+        {
+            m_pos = NULL;
+            return NULL;
+        }
+
+        if ( m_pos->GetNext() )
+            m_pos = m_pos->GetNext();
+        else
+        {
+            // we must go up the hierarchy until we reach container where this
+            // is not the last child, and then go down to first terminal cell:
+            while ( m_pos->GetNext() == NULL )
+            {
+                m_pos = m_pos->GetParent();
+                if ( !m_pos )
+                    return NULL;
+            }
+            m_pos = m_pos->GetNext();
+        }
+        while ( m_pos->GetFirstChild() != NULL )
+            m_pos = m_pos->GetFirstChild();
+    } while ( !m_pos->IsTerminalCell() );
+    
+    return m_pos;
+}
+
 #endif

src/html/htmlwin.cpp

@@ -32,6 +32,7 @@
 #include "wx/html/htmlwin.h"
 #include "wx/html/htmlproc.h"
 #include "wx/list.h"
+#include "wx/clipbrd.h"
 
 #include "wx/arrimpl.cpp"
 #include "wx/listimpl.cpp"
@@ -636,6 +637,50 @@ bool wxHtmlWindow::IsSelectionEnabled() const
 }
     
 
+wxString wxHtmlWindow::SelectionToText()
+{
+    if ( !m_selection )
+        return wxEmptyString;
+
+    const wxHtmlCell *end = m_selection->GetToCell();
+    wxString text;
+    wxHtmlTerminalCellsInterator i(m_selection->GetFromCell(), end);
+    if ( i )
+    {
+        text << i->ConvertToText(m_selection);
+        ++i;
+    }
+    const wxHtmlCell *prev = *i;
+    while ( i )
+    {
+        if ( prev->GetParent() != i->GetParent() )
+            text << _T('\n');
+        text << i->ConvertToText(*i == end ? m_selection : NULL);
+        prev = *i;
+        ++i;
+    }
+    return text;
+}
+
+void wxHtmlWindow::CopySelection(ClipboardType t)
+{
+#if wxUSE_CLIPBOARD
+    if ( m_selection )
+    {
+        wxTheClipboard->UsePrimarySelection(t == Primary);
+        wxString txt(SelectionToText());
+        if ( wxTheClipboard->Open() )
+        {
+            wxTheClipboard->SetData(new wxTextDataObject(txt));
+            wxTheClipboard->Close();
+            wxLogTrace(_T("wxhtmlselection"),
+                       _("Copied to clipboard:\"%s\""), txt.c_str());
+        }
+    }
+#endif
+}
+
+
 void wxHtmlWindow::OnLinkClicked(const wxHtmlLinkInfo& link)
 {
     const wxMouseEvent *e = link.GetEvent();
@@ -770,16 +815,14 @@ void wxHtmlWindow::OnIdle(wxIdleEvent& WXUNUSED(event))
                 if (goingDown)
                 {
                     m_tmpSelFromCell = m_Cell->FindCellByPos(x, y,
-                                                 wxHTML_FIND_NEAREST_BEFORE);
+                                                 wxHTML_FIND_NEAREST_AFTER);
-#if 0 // FIXME -- needed or not?
                     if (!m_tmpSelFromCell)
                         m_tmpSelFromCell = m_Cell->GetFirstTerminal();
-#endif
                 }
                 else
                 {
                     m_tmpSelFromCell = m_Cell->FindCellByPos(x, y,
-                                                 wxHTML_FIND_NEAREST_AFTER);
+                                                 wxHTML_FIND_NEAREST_BEFORE);
                     if (!m_tmpSelFromCell)
                         m_tmpSelFromCell = m_Cell->GetLastTerminal();
                 }
@@ -822,7 +865,7 @@ void wxHtmlWindow::OnIdle(wxIdleEvent& WXUNUSED(event))
                 }
                 if ( m_selection )
                 {
-                    if (goingDown)
+                    if ( m_tmpSelFromCell->IsBefore(selcell) )
                     {
                         m_selection->Set(m_tmpSelFromPos, m_tmpSelFromCell,
                                          wxPoint(x,y), selcell);
@@ -833,6 +876,9 @@ void wxHtmlWindow::OnIdle(wxIdleEvent& WXUNUSED(event))
                                          m_tmpSelFromPos, m_tmpSelFromCell);
                     }
                     Refresh(); // FIXME - optimize!
+#ifdef __UNIX__
+                    CopySelection(Primary);
+#endif
                 }
             }
         }
@@ -871,6 +917,26 @@ void wxHtmlWindow::OnIdle(wxIdleEvent& WXUNUSED(event))
     }
 }
 
+#if wxUSE_CLIPBOARD
+void wxHtmlWindow::OnKeyUp(wxKeyEvent& event)
+{
+    if ( event.GetKeyCode() == 'C' && event.ControlDown() )
+    {
+        if ( m_selection )
+            CopySelection();
+    }
+    else
+        event.Skip();
+}
+
+void wxHtmlWindow::OnCopy(wxCommandEvent& event)
+{
+    if ( m_selection )
+        CopySelection();
+}
+#endif
+
+
 
 IMPLEMENT_ABSTRACT_CLASS(wxHtmlProcessor,wxObject)
 
@@ -883,6 +949,10 @@ BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow)
     EVT_RIGHT_UP(wxHtmlWindow::OnMouseUp)
     EVT_MOTION(wxHtmlWindow::OnMouseMove)
     EVT_IDLE(wxHtmlWindow::OnIdle)
+#if wxUSE_CLIPBOARD
+    EVT_KEY_UP(wxHtmlWindow::OnKeyUp)
+    EVT_MENU(wxID_COPY, wxHtmlWindow::OnCopy)
+#endif
 END_EVENT_TABLE()
 
 

src/html/m_dflist.cpp

@@ -43,7 +43,7 @@ TAG_HANDLER_BEGIN(DEFLIST, "DL,DT,DD" )
 
         if (tag.GetName() == wxT("DL"))
         {
-            if (m_WParser->GetContainer()->GetFirstCell() != NULL)
+            if (m_WParser->GetContainer()->GetFirstChild() != NULL)
             {
                 m_WParser->CloseContainer();
                 m_WParser->OpenContainer();
@@ -52,7 +52,7 @@ TAG_HANDLER_BEGIN(DEFLIST, "DL,DT,DD" )
 
             ParseInner(tag);
 
-            if (m_WParser->GetContainer()->GetFirstCell() != NULL)
+            if (m_WParser->GetContainer()->GetFirstChild() != NULL)
             {
                 m_WParser->CloseContainer();
                 m_WParser->OpenContainer();

src/html/m_fonts.cpp

@@ -246,7 +246,7 @@ TAG_HANDLER_BEGIN(Hx, "H1,H2,H3,H4,H5,H6")
         }
 
         c = m_WParser->GetContainer();
-        if (c->GetFirstCell())
+        if (c->GetFirstChild())
         {
             m_WParser->CloseContainer();
             m_WParser->OpenContainer();

src/html/m_layout.cpp

@@ -136,7 +136,7 @@ TAG_HANDLER_BEGIN(P, "P")
 
     TAG_HANDLER_PROC(tag)
     {
-        if (m_WParser->GetContainer()->GetFirstCell() != NULL)
+        if (m_WParser->GetContainer()->GetFirstChild() != NULL)
         {
             m_WParser->CloseContainer();
             m_WParser->OpenContainer();
@@ -177,7 +177,7 @@ TAG_HANDLER_BEGIN(CENTER, "CENTER")
         wxHtmlContainerCell *c = m_WParser->GetContainer();
 
         m_WParser->SetAlign(wxHTML_ALIGN_CENTER);
-        if (c->GetFirstCell() != NULL)
+        if (c->GetFirstChild() != NULL)
         {
             m_WParser->CloseContainer();
             m_WParser->OpenContainer();
@@ -190,7 +190,7 @@ TAG_HANDLER_BEGIN(CENTER, "CENTER")
             ParseInner(tag);
 
             m_WParser->SetAlign(old);
-            if (c->GetFirstCell() != NULL)
+            if (c->GetFirstChild() != NULL)
             {
                 m_WParser->CloseContainer();
                 m_WParser->OpenContainer();
@@ -231,7 +231,7 @@ TAG_HANDLER_BEGIN(DIV, "DIV")
         {
             int old = m_WParser->GetAlign();
             wxHtmlContainerCell *c = m_WParser->GetContainer();
-            if (c->GetFirstCell() != NULL)
+            if (c->GetFirstChild() != NULL)
             {
                 m_WParser->CloseContainer();
                 m_WParser->OpenContainer();
@@ -248,7 +248,7 @@ TAG_HANDLER_BEGIN(DIV, "DIV")
             ParseInner(tag);
 
             m_WParser->SetAlign(old);
-            if (c->GetFirstCell() != NULL)
+            if (c->GetFirstChild() != NULL)
             {
                 m_WParser->CloseContainer();
                 m_WParser->OpenContainer();

src/html/m_list.cpp

@@ -133,7 +133,7 @@ TAG_HANDLER_BEGIN(OLULLI, "OL,UL,LI")
             else m_Numbering = 1;
 
             c = m_WParser->GetContainer();
-            if (c->GetFirstCell() != NULL)
+            if (c->GetFirstChild() != NULL)
             {
                 m_WParser->CloseContainer();
                 m_WParser->OpenContainer();