add support for alpha in color dialog on OSX, see #14127

[wxWidgets.git] / src / msw / statbmp.cpp

diff --git a/src/msw/statbmp.cpp b/src/msw/statbmp.cpp
index 14b4f94c9b8acf7f848cd57469126dc3f7313c68..34aec58c0917b1fb6c368a2cfb1cb4b12f263132 100644 (file)
--- a/src/msw/statbmp.cpp
+++ b/src/msw/statbmp.cpp
@@ -1,191 +1,306 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        statbmp.cpp
+// Name:        src/msw/statbmp.cpp

 // Purpose:     wxStaticBitmap
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Purpose:     wxStaticBitmap
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$

-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:    wxWindows license
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

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

 
 // 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
 
 #endif
 

-#ifndef WX_PRECOMP
+#if wxUSE_STATBMP
+

 #include "wx/statbmp.h"
 #include "wx/statbmp.h"

+
+#ifndef WX_PRECOMP
+    #include "wx/app.h"
+    #include "wx/window.h"
+    #include "wx/icon.h"
+    #include "wx/dcclient.h"

 #endif
 
 #endif
 

-#include <stdio.h>

 #include "wx/msw/private.h"
 
 #include "wx/msw/private.h"
 

-#if !USE_SHARED_LIBRARY
-IMPLEMENT_DYNAMIC_CLASS(wxStaticBitmap, wxControl)
-#endif
+#include "wx/sysopt.h"

 
 

-/*
- * wxStaticBitmap
- */
+#include <stdio.h>

 
 

-bool wxStaticBitmap::Create(wxWindow *parent, wxWindowID id,
-           const wxBitmap& bitmap,
-           const wxPoint& pos,
-           const wxSize& size,
-           long style,
-           const wxString& name)
-{
-  m_messageBitmap = bitmap;
-  SetName(name);
-  if (parent) parent->AddChild(this);
-
-  m_backgroundColour = parent->GetDefaultBackgroundColour() ;
-  m_foregroundColour = parent->GetDefaultForegroundColour() ;
-
-  if ( id == -1 )
-       m_windowId = (int)NewControlId();
-  else
-       m_windowId = id;
-
-  int x = pos.x;
-  int y = pos.y;
-  int width = size.x;
-  int height = size.y;
-
-  if ( width < 0 && bitmap.Ok() )
-       width = bitmap.GetWidth();
-  if ( height < 0 && bitmap.Ok() )
-       height = bitmap.GetHeight();
-
-  m_windowStyle = style;
-
-  // Use an ownerdraw button to produce a static bitmap, since there's
-  // no ownerdraw static.
-  // TODO: perhaps this should be a static item, with style SS_BITMAP.
-  HWND static_item =
-    CreateWindowEx(0, "BUTTON", "", BS_OWNERDRAW | WS_TABSTOP | WS_CHILD,
-                    0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
-                    wxGetInstance(), NULL);
-  m_hWnd = (WXHWND) static_item;
-
-  // Subclass again for purposes of dialog editing mode
-  SubclassWin((WXHWND) static_item);
-  SetSize(x, y, width, height);
-  return TRUE;
-}
+// ---------------------------------------------------------------------------
+// macros
+// ---------------------------------------------------------------------------
+
+wxBEGIN_EVENT_TABLE(wxStaticBitmap, wxStaticBitmapBase)
+    EVT_SIZE(wxStaticBitmap::WXHandleSize)
+wxEND_EVENT_TABLE()
+
+// ===========================================================================
+// implementation
+// ===========================================================================
+
+// ---------------------------------------------------------------------------
+// wxStaticBitmap
+// ---------------------------------------------------------------------------
+
+// we may have either bitmap or icon: if a bitmap with mask is passed, we
+// will transform it to an icon ourselves because otherwise the mask will
+// be ignored by Windows
+// note that this function will create a new object every time
+// it is called even if the image needs no conversion

 
 

-void wxStaticBitmap::SetSize(int x, int y, int width, int height, int sizeFlags)
+static wxGDIImage* ConvertImage( const wxGDIImage& bitmap )

 {
 {

-  int currentX, currentY;
-  GetPosition(&currentX, &currentY);
-  int x1 = x;
-  int y1 = y;
+    bool isIcon = bitmap.IsKindOf( wxCLASSINFO(wxIcon) );

 
 

-  if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
-    x1 = currentX;
-  if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
-    y1 = currentY;
+    if( !isIcon )
+    {
+        wxASSERT_MSG( wxDynamicCast(&bitmap, wxBitmap),
+                      wxT("not an icon and not a bitmap?") );

 
 

-  int actualWidth = width;
-  int actualHeight = height;
+        const wxBitmap& bmp = (const wxBitmap&)bitmap;
+        wxMask *mask = bmp.GetMask();
+        if ( mask && mask->GetMaskBitmap() )
+        {
+            wxIcon* icon = new wxIcon;
+            icon->CopyFromBitmap(bmp);

 
 

-  int ww, hh;
-  GetSize(&ww, &hh);
+            return icon;
+        }

 
 

-  // If we're prepared to use the existing width, then...
-  if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
-    actualWidth = ww;
-  else actualWidth = width;
+        return new wxBitmap( bmp );
+    }

 
 

-  // If we're prepared to use the existing height, then...
-  if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
-    actualHeight = hh;
-  else actualHeight = height;
+    // copying a bitmap is a cheap operation
+    return new wxIcon( (const wxIcon&)bitmap );
+}

 
 

-  MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
+bool wxStaticBitmap::Create(wxWindow *parent,
+                            wxWindowID id,
+                            const wxGDIImage& bitmap,
+                            const wxPoint& pos,
+                            const wxSize& size,
+                            long style,
+                            const wxString& name)
+{
+    if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
+        return false;
+
+    // we may have either bitmap or icon: if a bitmap with mask is passed, we
+    // will transform it to an icon ourselves because otherwise the mask will
+    // be ignored by Windows
+    m_isIcon = bitmap.IsKindOf(wxCLASSINFO(wxIcon));
+
+    wxGDIImage *image = ConvertImage( bitmap );
+    m_isIcon = image->IsKindOf( wxCLASSINFO(wxIcon) );
+
+    // create the native control
+    if ( !MSWCreateControl(wxT("STATIC"), wxEmptyString, pos, size) )
+    {
+        // control creation failed
+        return false;
+    }
+
+    // no need to delete the new image
+    SetImageNoCopy(image);
+
+    // GetBestSize will work properly now, so set the best size if needed
+    SetInitialSize(size);
+
+    // painting manually is reported not to work under Windows CE (see #10093),
+    // so don't do it there even if this probably means that alpha is not
+    // supported there -- but at least bitmaps without alpha appear correctly
+#ifndef __WXWINCE__
+    // Windows versions before XP (and even XP if the application has no
+    // manifest and so the old comctl32.dll is used) don't draw correctly the
+    // images with alpha channel so we need to draw them ourselves and it's
+    // easier to just always do it rather than check if we have an image with
+    // alpha or not
+    if ( wxTheApp->GetComCtl32Version() < 600 )
+    {
+        Connect(wxEVT_PAINT, wxPaintEventHandler(wxStaticBitmap::DoPaintManually));
+    }
+#endif // !__WXWINCE__
+
+    return true;

 }
 
 }
 

-void wxStaticBitmap::SetBitmap(const wxBitmap& bitmap)
+WXDWORD wxStaticBitmap::MSWGetStyle(long style, WXDWORD *exstyle) const

 {
 {

-  m_messageBitmap = bitmap;
-
-  int x, y;
-  int w, h;
-  GetPosition(&x, &y);
-  GetSize(&w, &h);
-  RECT rect;
-  rect.left = x; rect.top = y; rect.right = x + w; rect.bottom = y + h;
-
-  if ( bitmap.Ok() )
-       MoveWindow((HWND) GetHWND(), x, y, bitmap.GetWidth(), bitmap.GetHeight(),
-             FALSE);
-  
-  InvalidateRect((HWND) GetParent()->GetHWND(), &rect, TRUE);
+    WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
+
+    // what kind of control are we?
+    msStyle |= m_isIcon ? SS_ICON : SS_BITMAP;
+
+    // we use SS_CENTERIMAGE to prevent the control from resizing the bitmap to
+    // fit to its size -- this is unexpected and doesn't happen in other ports
+    //
+    // and SS_NOTIFY is necessary to receive mouse events
+    msStyle |= SS_CENTERIMAGE | SS_NOTIFY;
+
+    return msStyle;

 }
 
 }
 

-bool wxStaticBitmap::MSWOnDraw(WXDRAWITEMSTRUCT *item)
+bool wxStaticBitmap::ImageIsOk() const

 {
 {

-       long style = GetWindowLong((HWND) GetHWND(), GWL_STYLE);
-#ifdef __WIN32__
-       if ((style & 0xFF) == SS_BITMAP)
-       {
-               // Should we call Default() here?
-//             Default();
-
-               // Let default procedure draw the bitmap, which is defined
-               // in the Windows resource.
-               return FALSE;
-       }
-#endif
+    return m_image && m_image->IsOk();
+}

 
 

-    LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
+wxIcon wxStaticBitmap::GetIcon() const
+{
+    wxCHECK_MSG( m_image, wxIcon(), wxT("no image in wxStaticBitmap") );

 
 

-       wxBitmap* bitmap = &m_messageBitmap;
-       if ( !bitmap->Ok() )
-               return FALSE;
+    // we can't ask for an icon if all we have is a bitmap
+    wxCHECK_MSG( m_isIcon, wxIcon(), wxT("no icon in this wxStaticBitmap") );

 
 

-       HDC hDC = lpDIS->hDC;
-       HDC memDC = ::CreateCompatibleDC(hDC);
+    return *(wxIcon *)m_image;
+}

 
 

-       HBITMAP old = (HBITMAP) ::SelectObject(memDC, (HBITMAP) bitmap->GetHBITMAP());
+wxBitmap wxStaticBitmap::GetBitmap() const
+{
+    if ( m_isIcon )
+    {
+        // don't fail because we might have replaced the bitmap with icon
+        // ourselves internally in ConvertImage() to keep the transparency but
+        // the user code doesn't know about it so it still can use GetBitmap()
+        // to retrieve the bitmap
+        return wxBitmap(GetIcon());
+    }
+    else // we have a bitmap
+    {
+        wxCHECK_MSG( m_image, wxBitmap(), wxT("no image in wxStaticBitmap") );
+
+        return *(wxBitmap *)m_image;
+    }
+}

 
 

-       if (!old)
-               return FALSE;
+void wxStaticBitmap::Free()
+{
+    wxDELETE(m_image);
+}

 
 

-       RECT rect = lpDIS->rcItem;
+wxSize wxStaticBitmap::DoGetBestClientSize() const
+{
+    wxSize size;
+    if ( ImageIsOk() )
+    {
+        size = m_image->GetSize();
+    }
+    else // No image yet
+    {
+        // this is completely arbitrary
+        size.x =
+        size.y = 16;
+    }
+
+    return size;
+}

 
 

-       int x = lpDIS->rcItem.left;
-       int y = lpDIS->rcItem.top;
-       int width = lpDIS->rcItem.right - x;
-       int height = lpDIS->rcItem.bottom - y;
+void wxStaticBitmap::WXHandleSize(wxSizeEvent& event)
+{
+    // Invalidate everything when our size changes as the image position (it's
+    // drawn centred in the window client area) changes.
+    Refresh();

 
 

-       // Centre the bitmap in the control area
-       int x1 = (int) (x + ((width - bitmap->GetWidth()) / 2));
-       int y1 = (int) (y + ((height - bitmap->GetHeight()) / 2));
+    event.Skip();
+}

 
 

-       ::BitBlt(hDC, x1, y1, bitmap->GetWidth(), bitmap->GetHeight(), memDC, 0, 0, SRCCOPY);
+#ifndef __WXWINCE__

 
 

-       ::SelectObject(memDC, old);
+void wxStaticBitmap::DoPaintManually(wxPaintEvent& WXUNUSED(event))
+{
+    wxPaintDC dc(this);
+
+    const wxSize size(GetSize());
+    const wxBitmap bmp(GetBitmap());
+
+    // Clear the background: notice that we're supposed to be transparent, so
+    // use the parent background colour if we don't have our own instead of
+    // falling back to the default
+    const wxWindow *win = UseBgCol() ? this : GetParent();
+    dc.SetBrush(win->GetBackgroundColour());
+    dc.SetPen(*wxTRANSPARENT_PEN);
+    dc.DrawRectangle(0, 0, size.GetWidth(), size.GetHeight());
+
+    // Draw the image in the middle
+    dc.DrawBitmap(bmp,
+                  (size.GetWidth() - bmp.GetWidth()) / 2,
+                  (size.GetHeight() - bmp.GetHeight()) / 2,
+                  true /* use mask */);
+}

 
 

-    ::DeleteDC(memDC);
+#endif // !__WXWINCE__

 
 

-    return TRUE;
+void wxStaticBitmap::SetImage( const wxGDIImage* image )
+{
+    wxGDIImage* convertedImage = ConvertImage( *image );
+    SetImageNoCopy( convertedImage );

 }
 
 }
 

-long wxStaticBitmap::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+void wxStaticBitmap::SetImageNoCopy( wxGDIImage* image)

 {
 {

-  // Ensure that static items get messages. Some controls don't like this
-  // message to be intercepted (e.g. RichEdit), hence the tests.
-  if (nMsg == WM_NCHITTEST)
-    return (long)HTCLIENT;
+    Free();
+    InvalidateBestSize();
+
+    m_isIcon = image->IsKindOf( wxCLASSINFO(wxIcon) );
+    // the image has already been copied
+    m_image = image;

 
 

-  return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
+    int x, y;
+    int w, h;
+    GetPosition(&x, &y);
+    GetSize(&w, &h);
+
+#ifdef __WIN32__
+    HANDLE handle = (HANDLE)m_image->GetHandle();
+    LONG style = ::GetWindowLong( (HWND)GetHWND(), GWL_STYLE ) ;
+    ::SetWindowLong( (HWND)GetHWND(), GWL_STYLE, ( style & ~( SS_BITMAP|SS_ICON ) ) |
+                     ( m_isIcon ? SS_ICON : SS_BITMAP ) );
+    HGDIOBJ oldHandle = (HGDIOBJ)::SendMessage(GetHwnd(), STM_SETIMAGE,
+                  m_isIcon ? IMAGE_ICON : IMAGE_BITMAP, (LPARAM)handle);
+    // detect if this is still the handle we passed before or
+    // if the static-control made a copy of the bitmap!
+    if (m_currentHandle != 0 && oldHandle != (HGDIOBJ) m_currentHandle)
+    {
+        // the static control made a copy and we are responsible for deleting it
+        DeleteObject((HGDIOBJ) oldHandle);
+    }
+    m_currentHandle = (WXHANDLE)handle;
+#endif // Win32
+
+    if ( ImageIsOk() )
+    {
+        int width = image->GetWidth(),
+            height = image->GetHeight();
+        if ( width && height )
+        {
+            w = width;
+            h = height;
+
+            ::MoveWindow(GetHwnd(), x, y, width, height, FALSE);
+        }
+    }
+
+    RECT rect;
+    rect.left   = x;
+    rect.top    = y;
+    rect.right  = x + w;
+    rect.bottom = y + h;
+    ::InvalidateRect(GetHwndOf(GetParent()), &rect, TRUE);

 }
 
 }
 

+#endif // wxUSE_STATBMP