Added alpha blending in prep for FreeType text to canvas.

[wxWidgets.git] / src / common / framecmn.cpp

diff --git a/src/common/framecmn.cpp b/src/common/framecmn.cpp
index 163b00a160bcd53898ace9095e5e70f9d6f7af60..c7678d5b5f55afd743a4735ff53594202680a002 100644 (file)
--- a/src/common/framecmn.cpp
+++ b/src/common/framecmn.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        framecmn.cpp
+// Name:        common/framecmn.cpp

 // Purpose:     common (for all platforms) wxFrame functions
 // Author:      Julian Smart, Vadim Zeitlin
 // Created:     01/02/97
 // Purpose:     common (for all platforms) wxFrame functions
 // Author:      Julian Smart, Vadim Zeitlin
 // Created:     01/02/97


@@ -8,66 +8,460 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#ifdef __GNUG__
+    #pragma implementation "framebase.h"
+#endif
+

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #include "wx/frame.h"
 #include "wx/menu.h"
 #include "wx/menuitem.h"
 #endif
 
 #include "wx/frame.h"
 #include "wx/menu.h"
 #include "wx/menuitem.h"

+#include "wx/dcclient.h"
+
+#if wxUSE_TOOLBAR
+    #include "wx/toolbar.h"
+#endif
+#if wxUSE_STATUSBAR
+    #include "wx/statusbr.h"
+#endif
+
+// ----------------------------------------------------------------------------
+// event table
+// ----------------------------------------------------------------------------
+
+BEGIN_EVENT_TABLE(wxFrameBase, wxWindow)
+    EVT_IDLE(wxFrameBase::OnIdle)
+    EVT_CLOSE(wxFrameBase::OnCloseWindow)
+    EVT_MENU_HIGHLIGHT_ALL(wxFrameBase::OnMenuHighlight)
+    EVT_SIZE(wxFrameBase::OnSize)
+END_EVENT_TABLE()
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// construction/destruction
+// ----------------------------------------------------------------------------
+
+wxFrameBase::wxFrameBase()
+{
+    m_frameMenuBar = NULL;
+
+#if wxUSE_TOOLBAR
+    m_frameToolBar = NULL;
+#endif // wxUSE_TOOLBAR
+
+#if wxUSE_STATUSBAR
+    m_frameStatusBar = NULL;
+#endif // wxUSE_STATUSBAR
+}
+
+bool wxFrameBase::Destroy()
+{
+    // delayed destruction: the frame will be deleted during the next idle
+    // loop iteration
+    if ( !wxPendingDelete.Member(this) )
+        wxPendingDelete.Append(this);

 
 

-#ifndef __WXGTK__
-void wxFrame::OnIdle(wxIdleEvent& WXUNUSED(event) )
+    return TRUE;
+}
+
+wxFrame *wxFrameBase::New(wxWindow *parent,
+                          wxWindowID id,
+                          const wxString& title,
+                          const wxPoint& pos,
+                          const wxSize& size,
+                          long style,
+                          const wxString& name)
+{
+    return new wxFrame(parent, id, title, pos, size, style, name);
+}
+
+void wxFrameBase::DeleteAllBars()

 {
 {

-  DoMenuUpdates();
+    if ( m_frameMenuBar )
+    {
+        delete m_frameMenuBar;
+        m_frameMenuBar = (wxMenuBar *) NULL;
+    }
+
+#if wxUSE_STATUSBAR
+    if ( m_frameStatusBar )
+    {
+        delete m_frameStatusBar;
+        m_frameStatusBar = (wxStatusBar *) NULL;
+    }
+#endif // wxUSE_STATUSBAR
+
+#if wxUSE_TOOLBAR
+    if ( m_frameToolBar )
+    {
+        delete m_frameToolBar;
+        m_frameToolBar = (wxToolBar *) NULL;
+    }
+#endif // wxUSE_TOOLBAR

 }
 }

+
+// ----------------------------------------------------------------------------
+// wxFrame size management: we exclude the areas taken by menu/status/toolbars
+// from the client area, so the client area is what's really available for the
+// frame contents
+// ----------------------------------------------------------------------------
+
+// get the origin of the client area in the client coordinates
+wxPoint wxFrameBase::GetClientAreaOrigin() const
+{
+    wxPoint pt(0, 0);
+
+#if wxUSE_TOOLBAR
+    if ( GetToolBar() && GetToolBar()->IsShown() )
+    {
+        int w, h;
+        GetToolBar()->GetSize(& w, & h);
+
+        if ( GetToolBar()->GetWindowStyleFlag() & wxTB_VERTICAL )
+        {
+            pt.x += w;
+        }
+        else
+        {
+            pt.y += h;
+        }
+    }
+#endif // wxUSE_TOOLBAR
+
+    return pt;
+}
+
+void wxFrameBase::DoScreenToClient(int *x, int *y) const
+{
+    wxWindow::DoScreenToClient(x, y);
+
+    // We may be faking the client origin.
+    // So a window that's really at (0, 30) may appear
+    // (to wxWin apps) to be at (0, 0).
+    wxPoint pt(GetClientAreaOrigin());
+    *x -= pt.x;
+    *y -= pt.y;
+}
+
+void wxFrameBase::DoClientToScreen(int *x, int *y) const
+{
+    // We may be faking the client origin.
+    // So a window that's really at (0, 30) may appear
+    // (to wxWin apps) to be at (0, 0).
+    wxPoint pt1(GetClientAreaOrigin());
+    *x += pt1.x;
+    *y += pt1.y;
+
+    wxWindow::DoClientToScreen(x, y);
+}
+
+// ----------------------------------------------------------------------------
+// misc
+// ----------------------------------------------------------------------------
+
+// make the window modal (all other windows unresponsive)
+void wxFrameBase::MakeModal(bool modal)
+{
+    if ( modal )
+    {
+        wxEnableTopLevelWindows(FALSE);
+        Enable(TRUE);           // keep this window enabled
+    }
+    else
+    {
+        wxEnableTopLevelWindows(TRUE);
+    }
+}
+
+bool wxFrameBase::ProcessCommand(int id)
+{
+    wxMenuBar *bar = GetMenuBar();
+    if ( !bar )
+        return FALSE;
+
+    wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, id);
+    commandEvent.SetEventObject(this);
+
+    wxMenuItem *item = bar->FindItem(id);
+    if ( item && item->IsCheckable() )
+    {
+        item->Toggle();
+
+        // use the new value
+        commandEvent.SetInt(item->IsChecked());
+    }
+
+    return GetEventHandler()->ProcessEvent(commandEvent);
+}
+
+// ----------------------------------------------------------------------------
+// event handlers
+// ----------------------------------------------------------------------------
+
+// default resizing behaviour - if only ONE subwindow, resize to fill the
+// whole client area
+void wxFrameBase::OnSize(wxSizeEvent& WXUNUSED(event))
+{
+    // if we're using constraints - do use them
+#if wxUSE_CONSTRAINTS
+    if ( GetAutoLayout() )
+    {
+        Layout();
+    }
+    else

 #endif
 #endif

+    {
+        // do we have _exactly_ one child?
+        wxWindow *child = (wxWindow *)NULL;
+        for ( wxWindowList::Node *node = GetChildren().GetFirst();
+              node;
+              node = node->GetNext() )
+        {
+            wxWindow *win = node->GetData();

 
 

-// update all menus
-void wxFrame::DoMenuUpdates()
+            // exclude top level and managed windows (status bar isn't
+            // currently in the children list except under wxMac anyhow, but
+            // it makes no harm to test for it)
+            if ( !win->IsTopLevel()
+#if wxUSE_STATUSBAR
+                    && (win != GetStatusBar())
+#endif // wxUSE_STATUSBAR
+#if wxUSE_TOOLBAR
+                    && (win != GetToolBar())
+#endif // wxUSE_TOOLBAR
+               )
+            {
+                if ( child )
+                {
+                    return;     // it's our second subwindow - nothing to do
+                }
+
+                child = win;
+            }
+        }
+
+        // do we have any children at all?
+        if ( child )
+        {
+            // exactly one child - set it's size to fill the whole frame
+            int clientW, clientH;
+            DoGetClientSize(&clientW, &clientH);
+
+            // for whatever reasons, wxGTK wants to have a small offset - it
+            // probably looks better with it?
+#ifdef __WXGTK__
+            static const int ofs = 1;
+#else
+            static const int ofs = 0;
+#endif
+
+            child->SetSize(ofs, ofs, clientW - 2*ofs, clientH - 2*ofs);
+        }
+    }
+}
+
+// The default implementation for the close window event.
+void wxFrameBase::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
+{
+    Destroy();
+}
+
+void wxFrameBase::OnMenuHighlight(wxMenuEvent& event)
+{
+#if wxUSE_STATUSBAR
+    (void)ShowMenuHelp(GetStatusBar(), event.GetMenuId());
+#endif // wxUSE_STATUSBAR
+}
+
+// ----------------------------------------------------------------------------
+// status bar stuff
+// ----------------------------------------------------------------------------
+
+#if wxUSE_STATUSBAR
+
+wxStatusBar* wxFrameBase::CreateStatusBar(int number,
+                                          long style,
+                                          wxWindowID id,
+                                          const wxString& name)
+{
+    // the main status bar can only be created once (or else it should be
+    // deleted before calling CreateStatusBar() again)
+    wxCHECK_MSG( !m_frameStatusBar, (wxStatusBar *)NULL,
+                 wxT("recreating status bar in wxFrame") );
+
+    m_frameStatusBar = OnCreateStatusBar( number, style, id, name );
+    if ( m_frameStatusBar )
+        PositionStatusBar();
+
+    return m_frameStatusBar;
+}
+
+wxStatusBar *wxFrameBase::OnCreateStatusBar(int number,
+                                            long style,
+                                            wxWindowID id,
+                                            const wxString& name)
+{
+    wxStatusBar *statusBar = new wxStatusBar(this, id, style, name);
+
+    // Set the height according to the font and the border size
+    wxClientDC dc(statusBar);
+    dc.SetFont(statusBar->GetFont());
+
+    wxCoord y;
+    dc.GetTextExtent( "X", NULL, &y );
+
+    int height = (int)( (11*y)/10 + 2*statusBar->GetBorderY());
+
+    statusBar->SetSize( -1, -1, -1, height );
+
+    statusBar->SetFieldsCount(number);
+
+    return statusBar;
+}
+
+void wxFrameBase::SetStatusText(const wxString& text, int number)
+{
+    wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
+
+    m_frameStatusBar->SetStatusText(text, number);
+}
+
+void wxFrameBase::SetStatusWidths(int n, const int widths_field[] )

 {
 {

-  wxMenuBar* bar = GetMenuBar();
+    wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set widths for") );

 
 

-  // Process events starting with the window with the focus, if any.
-  wxWindow* focusWin = wxFindFocusDescendant(this);
+    m_frameStatusBar->SetStatusWidths(n, widths_field);

 
 

-  if ( bar != NULL ) {
-    int nCount = bar->GetMenuCount();
-    for (int n = 0; n < nCount; n++)
-      DoMenuUpdates(bar->GetMenu(n), focusWin);
-  }
+    PositionStatusBar();
+}
+
+bool wxFrameBase::ShowMenuHelp(wxStatusBar *statbar, int menuId)
+{
+    if ( !statbar )
+        return FALSE;
+
+    // if no help string found, we will clear the status bar text
+    wxString helpString;
+
+    if ( menuId != wxID_SEPARATOR && menuId != -2 /* wxID_TITLE */ )
+    {
+        wxMenuBar *menuBar = GetMenuBar();
+        if ( menuBar )
+        {
+            // it's ok if we don't find the item because it might belong
+            // to the popup menu
+            wxMenuItem *item = menuBar->FindItem(menuId);
+            if ( item )
+                helpString = item->GetHelp();
+        }
+    }
+
+    // set status text even if the string is empty - this will at least
+    // remove the string from the item which was previously selected
+    statbar->SetStatusText(helpString);
+
+    return !helpString.IsEmpty();
+}
+
+#endif // wxUSE_STATUSBAR
+
+// ----------------------------------------------------------------------------
+// toolbar stuff
+// ----------------------------------------------------------------------------
+
+#if wxUSE_TOOLBAR
+
+wxToolBar* wxFrameBase::CreateToolBar(long style,
+                                      wxWindowID id,
+                                      const wxString& name)
+{
+    // the main toolbar can't be recreated (unless it was explicitly deeleted
+    // before)
+    wxCHECK_MSG( !m_frameToolBar, (wxToolBar *)NULL,
+                 wxT("recreating toolbar in wxFrame") );
+
+    m_frameToolBar = OnCreateToolBar(style, id, name);
+
+    return m_frameToolBar;
+}
+
+wxToolBar* wxFrameBase::OnCreateToolBar(long style,
+                                        wxWindowID id,
+                                        const wxString& name)
+{
+    return new wxToolBar(this, id,
+                         wxDefaultPosition, wxDefaultSize,
+                         style, name);
+}
+
+#endif // wxUSE_TOOLBAR
+
+// ----------------------------------------------------------------------------
+// Menu UI updating
+// ----------------------------------------------------------------------------
+
+void wxFrameBase::OnIdle(wxIdleEvent& WXUNUSED(event) )
+{
+    DoMenuUpdates();
+}
+
+// update all menus
+void wxFrameBase::DoMenuUpdates()
+{
+    wxMenuBar* bar = GetMenuBar();
+
+    if ( bar != NULL )
+    {
+        int nCount = bar->GetMenuCount();
+        for (int n = 0; n < nCount; n++)
+            DoMenuUpdates(bar->GetMenu(n), (wxWindow*) NULL);
+    }

 }
 
 // update a menu and all submenus recursively
 }
 
 // update a menu and all submenus recursively

-void wxFrame::DoMenuUpdates(wxMenu* menu, wxWindow* focusWin)
-{
-  wxEvtHandler* evtHandler = focusWin ? focusWin->GetEventHandler() : GetEventHandler();
-  wxNode* node = menu->GetItems().First();
-  while (node)
-  {
-    wxMenuItem* item = (wxMenuItem*) node->Data();
-    if ( !item->IsSeparator() )
+void wxFrameBase::DoMenuUpdates(wxMenu* menu, wxWindow* WXUNUSED(focusWin))
+{
+    wxEvtHandler* evtHandler = GetEventHandler();
+    wxMenuItemList::Node* node = menu->GetMenuItems().GetFirst();
+    while (node)

     {
     {

-      wxWindowID id = item->GetId();
-      wxUpdateUIEvent event(id);
-      event.SetEventObject( this );
-
-      if (evtHandler->ProcessEvent(event))
-      {
-        if (event.GetSetText())
-          menu->SetLabel(id, event.GetText());
-        if (event.GetSetChecked())
-          menu->Check(id, event.GetChecked());
-        if (event.GetSetEnabled())
-          menu->Enable(id, event.GetEnabled());
-      }
-
-      if (item->GetSubMenu())
-        DoMenuUpdates(item->GetSubMenu(), focusWin);
+        wxMenuItem* item = node->GetData();
+        if ( !item->IsSeparator() )
+        {
+            wxWindowID id = item->GetId();
+            wxUpdateUIEvent event(id);
+            event.SetEventObject( this );
+
+            if (evtHandler->ProcessEvent(event))
+            {
+                if (event.GetSetText())
+                    menu->SetLabel(id, event.GetText());
+                if (event.GetSetChecked())
+                    menu->Check(id, event.GetChecked());
+                if (event.GetSetEnabled())
+                    menu->Enable(id, event.GetEnabled());
+            }
+
+            if (item->GetSubMenu())
+                DoMenuUpdates(item->GetSubMenu(), (wxWindow*) NULL);
+        }
+        node = node->GetNext();

     }
     }

-    node = node->Next();
-  }

 }
 }