guard against nullptr

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

diff --git a/src/msw/bmpbuttn.cpp b/src/msw/bmpbuttn.cpp
index 0e3fd2ebe2d8726719fbdf14fbb7c93c7bd0e88a..4cbbbbb97890eb7d63b2518419a82961b4a9a219 100644 (file)
--- a/src/msw/bmpbuttn.cpp
+++ b/src/msw/bmpbuttn.cpp
@@ -1,387 +1,146 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

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

 // Purpose:     wxBitmapButton
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Purpose:     wxBitmapButton
 // 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 "bmpbuttn.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
 
 #endif
 

+#if wxUSE_BMPBUTTON
+
+#include "wx/bmpbuttn.h"
+

 #ifndef WX_PRECOMP
 #ifndef WX_PRECOMP

-    #include "wx/bmpbuttn.h"

     #include "wx/log.h"
     #include "wx/dcmemory.h"
     #include "wx/log.h"
     #include "wx/dcmemory.h"

+    #include "wx/image.h"

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

+#include "wx/msw/dc.h"          // for wxDCTemp

 
 

-IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton, wxButton)
-
-#define BUTTON_HEIGHT_FACTOR (EDIT_CONTROL_FACTOR * 1.1)
-
-bool wxBitmapButton::Create(wxWindow *parent, wxWindowID id, const wxBitmap& bitmap,
-           const wxPoint& pos,
-           const wxSize& size, long style,
-           const wxValidator& validator,
-           const wxString& name)
-{
-  m_buttonBitmap = bitmap;
-  SetName(name);
-
-#if wxUSE_VALIDATORS
-  SetValidator(validator);
-#endif // wxUSE_VALIDATORS
-
-  parent->AddChild(this);
-
-  m_backgroundColour = parent->GetBackgroundColour();
-  m_foregroundColour = parent->GetForegroundColour();
-  m_windowStyle = style;
-  m_marginX = 0;
-  m_marginY = 0;
-
-  if ( style & wxBU_AUTODRAW )
-  {
-    m_marginX = wxDEFAULT_BUTTON_MARGIN;
-    m_marginY = wxDEFAULT_BUTTON_MARGIN;
-  }
+#include "wx/msw/uxtheme.h"

 
 

-  int x = pos.x;
-  int y = pos.y;
-  int width = size.x;
-  int height = size.y;
+#if wxUSE_UXTHEME
+    // no need to include tmschema.h
+    #ifndef BP_PUSHBUTTON
+        #define BP_PUSHBUTTON 1

 
 

-  if (id == -1)
-    m_windowId = NewControlId();
-  else
-    m_windowId = id;
+        #define PBS_NORMAL    1
+        #define PBS_HOT       2
+        #define PBS_PRESSED   3
+        #define PBS_DISABLED  4
+        #define PBS_DEFAULTED 5

 
 

-  if ( width == -1 && bitmap.Ok())
-    width = bitmap.GetWidth() + 2*m_marginX;
+        #define TMT_CONTENTMARGINS 3602
+    #endif
+#endif // wxUSE_UXTHEME

 
 

-  if ( height == -1 && bitmap.Ok())
-    height = bitmap.GetHeight() + 2*m_marginY;
-
-       long msStyle = WS_VISIBLE | WS_TABSTOP | WS_CHILD | BS_OWNERDRAW ;
-
-#ifdef __WIN32__
-    if(m_windowStyle & wxBU_LEFT)
-        msStyle |= BS_LEFT;
-    if(m_windowStyle & wxBU_RIGHT)
-        msStyle |= BS_RIGHT;
-    if(m_windowStyle & wxBU_TOP)
-        msStyle |= BS_TOP;
-    if(m_windowStyle & wxBU_BOTTOM)
-        msStyle |= BS_BOTTOM;
+#ifndef ODS_NOFOCUSRECT
+    #define ODS_NOFOCUSRECT     0x0200

 #endif
 
 #endif
 

-  m_hWnd = (WXHWND)CreateWindowEx
-                   (
-                    0,
-                    wxT("BUTTON"),
-                    wxT(""),
-                    msStyle,
-                    0, 0, 0, 0,
-                    GetWinHwnd(parent),
-                    (HMENU)m_windowId,
-                    wxGetInstance(),
-                    NULL
-                   );
-
-  // Subclass again for purposes of dialog editing mode
-  SubclassWin(m_hWnd);
-
-  SetFont(parent->GetFont());
-
-  SetSize(x, y, width, height);
-
-  return TRUE;
-}
-
-void wxBitmapButton::SetBitmapLabel(const wxBitmap& bitmap)
-{
-  m_buttonBitmap = bitmap;
-}
-
-// VZ: should be at the very least less than wxDEFAULT_BUTTON_MARGIN
-#define FOCUS_MARGIN 3
-
-bool wxBitmapButton::MSWOnDraw(WXDRAWITEMSTRUCT *item)
-{
-#if defined(__WIN95__)
-    long style = GetWindowLong((HWND) GetHWND(), GWL_STYLE);
-    if (style & BS_BITMAP)
-    {
-        // Let default procedure draw the bitmap, which is defined
-        // in the Windows resource.
-        return FALSE;
-    }
-#endif
-
-    LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
-    HDC hDC                = lpDIS->hDC;
-    UINT state             = lpDIS->itemState;
-    bool isSelected        = (state & ODS_SELECTED) != 0;
-    bool autoDraw          = (GetWindowStyleFlag() & wxBU_AUTODRAW) != 0;
-
-
-    // choose the bitmap to use depending on the button state
-    wxBitmap* bitmap;
-
-    if ( isSelected && m_buttonBitmapSelected.Ok() )
-        bitmap = &m_buttonBitmapSelected;
-    else if ((state & ODS_FOCUS) && m_buttonBitmapFocus.Ok())
-        bitmap = &m_buttonBitmapFocus;
-    else if ((state & ODS_DISABLED) && m_buttonBitmapDisabled.Ok())
-        bitmap = &m_buttonBitmapDisabled;
-    else
-        bitmap = &m_buttonBitmap;
-
-    if ( !bitmap->Ok() )
-        return FALSE;
-
-    // centre the bitmap in the control area
-    int x      = lpDIS->rcItem.left;
-    int y      = lpDIS->rcItem.top;
-    int width  = lpDIS->rcItem.right - x;
-    int height = lpDIS->rcItem.bottom - y;
-    int wBmp   = bitmap->GetWidth();
-    int hBmp   = bitmap->GetHeight();
-
-       int x1,y1;
-       
-    if(m_windowStyle & wxBU_LEFT)
-        x1 = x + (FOCUS_MARGIN+1);
-    else if(m_windowStyle & wxBU_RIGHT)
-        x1 = x + (width - wBmp) - (FOCUS_MARGIN+1);
-    else
-        x1 = x + (width - wBmp) / 2;
-
-    if(m_windowStyle & wxBU_TOP)
-        y1 = y + (FOCUS_MARGIN+1);
-    else if(m_windowStyle & wxBU_BOTTOM)
-        y1 = y + (height - hBmp) - (FOCUS_MARGIN+1);
-    else
-        y1 = y + (height - hBmp) / 2;
-
-    if ( isSelected && autoDraw )
-    {
-        x1++;
-        y1++;
-    }
-
-    // draw the face, if auto-drawing
-    if ( autoDraw )
-    {
-        DrawFace((WXHDC) hDC,
-                 lpDIS->rcItem.left, lpDIS->rcItem.top,
-                 lpDIS->rcItem.right, lpDIS->rcItem.bottom,
-                 isSelected);
-    }
-
-    // draw the bitmap
-    wxDC dst;
-    dst.SetHDC((WXHDC) hDC, FALSE);
-    dst.DrawBitmap(*bitmap, x1, y1, TRUE);
-
-    // draw focus / disabled state, if auto-drawing
-    if ( (state & ODS_DISABLED) && autoDraw )
-    {
-        DrawButtonDisable((WXHDC) hDC,
-                          lpDIS->rcItem.left, lpDIS->rcItem.top,
-                          lpDIS->rcItem.right, lpDIS->rcItem.bottom,
-                          TRUE);
-    }
-    else if ( (state & ODS_FOCUS) && autoDraw )
-    {
-        DrawButtonFocus((WXHDC) hDC,
-                        lpDIS->rcItem.left,
-                        lpDIS->rcItem.top,
-                        lpDIS->rcItem.right,
-                        lpDIS->rcItem.bottom,
-                        isSelected);
-    }
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------

 
 

-    return TRUE;
-}
-
-// GRG Feb/2000, support for bmp buttons with Win95/98 standard LNF
-
-#if defined(__WIN95__)
-
-void wxBitmapButton::DrawFace( WXHDC dc, int left, int top, int right, int bottom, bool sel )
-{
-    HPEN oldp;
-    HPEN penHiLight;
-    HPEN penLight;
-    HPEN penShadow;
-    HPEN penDkShadow;
-    HBRUSH brushFace;
+BEGIN_EVENT_TABLE(wxBitmapButton, wxBitmapButtonBase)
+    EVT_SYS_COLOUR_CHANGED(wxBitmapButton::OnSysColourChanged)
+END_EVENT_TABLE()

 
 

-    // create needed pens and brush
-    penHiLight  = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DHILIGHT));
-    penLight    = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DLIGHT));
-    penShadow   = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DSHADOW));
-    penDkShadow = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DDKSHADOW));
-    brushFace   = CreateSolidBrush(GetSysColor(COLOR_BTNFACE));
-
-    // draw the rectangle
-    RECT rect;
-    rect.left   = left;
-    rect.right  = right;
-    rect.top    = top;
-    rect.bottom = bottom;
-    FillRect((HDC) dc, &rect, brushFace);
-
-    // draw the border
-    oldp = (HPEN) SelectObject( (HDC) dc, sel? penDkShadow : penHiLight);
-    MoveToEx((HDC) dc, left, top, NULL); LineTo((HDC) dc, right-1, top);
-    MoveToEx((HDC) dc, left, top+1, NULL); LineTo((HDC) dc, left, bottom-1);
-
-    SelectObject( (HDC) dc, sel? penShadow : penLight);
-    MoveToEx((HDC) dc, left+1, top+1, NULL); LineTo((HDC) dc, right-2, top+1);
-    MoveToEx((HDC) dc, left+1, top+2, NULL); LineTo((HDC) dc, left+1, bottom-2);
-
-    SelectObject( (HDC) dc, sel? penLight : penShadow);
-    MoveToEx((HDC) dc, left+1, bottom-2, NULL); LineTo((HDC) dc, right-1, bottom-2);
-    MoveToEx((HDC) dc, right-2, bottom-3, NULL); LineTo((HDC) dc, right-2, top);
-
-    SelectObject( (HDC) dc, sel? penHiLight : penDkShadow);
-    MoveToEx((HDC) dc, left, bottom-1, NULL); LineTo((HDC) dc, right+2, bottom-1);
-    MoveToEx((HDC) dc, right-1, bottom-2, NULL); LineTo((HDC) dc, right-1, top-1);
-
-    // delete allocated resources
-    SelectObject((HDC) dc,oldp);
-    DeleteObject(penHiLight);
-    DeleteObject(penLight);
-    DeleteObject(penShadow);
-    DeleteObject(penDkShadow);
-    DeleteObject(brushFace);
-}
+/*
+TODO PROPERTIES :

 
 

-#else
+long "style" , wxBU_AUTODRAW
+bool "default" , 0
+bitmap "selected" ,
+bitmap "focus" ,
+bitmap "disabled" ,
+*/

 
 

-void wxBitmapButton::DrawFace( WXHDC dc, int left, int top, int right, int bottom, bool sel )
+bool wxBitmapButton::Create(wxWindow *parent,
+                            wxWindowID id,
+                            const wxBitmap& bitmap,
+                            const wxPoint& pos,
+                            const wxSize& size, long style,
+                            const wxValidator& validator,
+                            const wxString& name)

 {
 {

-    HPEN oldp;
-    HPEN penBorder;
-    HPEN penLight;
-    HPEN penShadow;
-    HBRUSH brushFace;
-
-    // create needed pens and brush
-    penBorder = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_WINDOWFRAME));
-    penShadow = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_BTNSHADOW));
-    penLight  = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_BTNHIGHLIGHT));
-    brushFace = CreateSolidBrush(COLOR_BTNFACE);
+    if ( !wxBitmapButtonBase::Create(parent, id, pos, size, style,
+                                     validator, name) )
+        return false;

 
 

-    // draw the rectangle
-    RECT rect;
-    rect.left   = left;
-    rect.right  = right;
-    rect.top    = top;
-    rect.bottom = bottom;
-    FillRect((HDC) dc, &rect, brushFace);
+    if ( bitmap.IsOk() )
+        SetBitmapLabel(bitmap);

 
 

-    // draw the border
-    oldp = (HPEN) SelectObject( (HDC) dc, penBorder);
-    MoveToEx((HDC) dc,left+1,top,NULL);LineTo((HDC) dc,right-1,top);
-    MoveToEx((HDC) dc,left,top+1,NULL);LineTo((HDC) dc,left,bottom-1);
-    MoveToEx((HDC) dc,left+1,bottom-1,NULL);LineTo((HDC) dc,right-1,bottom-1);
-    MoveToEx((HDC) dc,right-1,top+1,NULL);LineTo((HDC) dc,right-1,bottom-1);
-
-    SelectObject( (HDC) dc, penShadow);
-    if (sel)
-    {
-        MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL);
-        LineTo((HDC) dc,  left+1    ,top+1);
-        LineTo((HDC) dc,  right-2   ,top+1);
-    }
-    else
+    if ( !size.IsFullySpecified() )

     {
     {

-        MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL);
-        LineTo((HDC) dc,  right-2   ,bottom-2);
-        LineTo((HDC) dc,  right-2   ,top);
-
-        MoveToEx((HDC) dc,left+2    ,bottom-3   ,NULL);
-        LineTo((HDC) dc,  right-3   ,bottom-3);
-        LineTo((HDC) dc,  right-3   ,top+1);
-
-        SelectObject( (HDC) dc, penLight);
-
-        MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL);
-        LineTo((HDC) dc,  left+1    ,top+1);
-        LineTo((HDC) dc,  right-2   ,top+1);
+        // As our bitmap has just changed, our best size has changed as well so
+        // reset the initial size using the new value.
+        SetInitialSize(size);

     }
 
     }
 

-    // delete allocated resources
-    SelectObject((HDC) dc,oldp);
-    DeleteObject(penBorder);
-    DeleteObject(penLight);
-    DeleteObject(penShadow);
-    DeleteObject(brushFace);
-}
-
-#endif // defined(__WIN95__)
-
-
-void wxBitmapButton::DrawButtonFocus( WXHDC dc, int left, int top, int right, int bottom, bool sel )
-{
-    RECT rect;
-    rect.left = left;
-    rect.top = top;
-    rect.right = right;
-    rect.bottom = bottom;
-    InflateRect( &rect, - FOCUS_MARGIN, - FOCUS_MARGIN );
-
-    // GRG: the focus rectangle should not move when the button is pushed!
-/*
-    if ( sel )
-        OffsetRect( &rect, 1, 1 );
-*/
-       (void)sel;
-    DrawFocusRect( (HDC) dc, &rect );
+    return true;

 }
 
 }
 

-extern HBRUSH wxDisableButtonBrush;
-void wxBitmapButton::DrawButtonDisable( WXHDC dc, int left, int top, int right, int bottom, bool with_marg )
+void wxBitmapButton::DoSetBitmap(const wxBitmap& bitmap, State which)

 {
 {

-    HBRUSH  old = (HBRUSH) SelectObject( (HDC) dc, wxDisableButtonBrush );
-
-    // VZ: what's this?? there is no such ROP AFAIK
-#ifdef __SALFORDC__
-    DWORD dwRop = 0xFA0089L;
-#else
-    DWORD dwRop = 0xFA0089UL;
-#endif
-
-    if ( with_marg )
+    if ( bitmap.IsOk() )

     {
     {

-        left += m_marginX;
-        top += m_marginY;
-        right -= 2 * m_marginX;
-        bottom -= 2 * m_marginY;
+        switch ( which )
+        {
+#if wxUSE_IMAGE
+            case State_Normal:
+                if ( !HasFlag(wxBU_AUTODRAW) && !m_disabledSetByUser )
+                {
+                    wxImage img(bitmap.ConvertToImage().ConvertToGreyscale());
+                    wxBitmapButtonBase::DoSetBitmap(img, State_Disabled);
+                }
+                break;
+#endif // wxUSE_IMAGE
+
+            case State_Focused:
+                // if the focus bitmap is specified but current one isn't, use
+                // the focus bitmap for hovering as well if this is consistent
+                // with the current Windows version look and feel
+                //
+                // rationale: this is compatible with the old wxGTK behaviour
+                // and also makes it much easier to do "the right thing" for
+                // all platforms (some of them, such as Windows XP, have "hot"
+                // buttons while others don't)
+                if ( !m_hoverSetByUser )
+                    wxBitmapButtonBase::DoSetBitmap(bitmap, State_Current);
+                break;
+
+            case State_Current:
+                // don't overwrite it with the focused bitmap
+                m_hoverSetByUser = true;
+                break;
+
+            case State_Disabled:
+                // don't overwrite it with the version automatically created
+                // from the normal one
+                m_disabledSetByUser = true;
+                break;
+
+            default:
+                // nothing special to do but include the default clause to
+                // suppress gcc warnings
+                ;
+        }

     }
 
     }
 

-    ::PatBlt( (HDC) dc, left, top, right, bottom, dwRop);
-
-    ::SelectObject( (HDC) dc, old );
+    wxBitmapButtonBase::DoSetBitmap(bitmap, which);

 }
 
 }
 

-void wxBitmapButton::SetDefault()
-{
-    wxButton::SetDefault();
-}
+#endif // wxUSE_BMPBUTTON