X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a29ffc34c07e0408a798538b268d4733ee62965c..8a000b6b9e32964097c59c9e2b868e70a03b071e:/src/msw/scrolbar.cpp?ds=sidebyside

diff --git a/src/msw/scrolbar.cpp b/src/msw/scrolbar.cpp
index 9c92f70f9e..fccc82bb70 100644
--- a/src/msw/scrolbar.cpp
+++ b/src/msw/scrolbar.cpp
@@ -5,8 +5,8 @@
 // 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__
@@ -53,6 +53,9 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
     SetValidator(validator);
 #endif // wxUSE_VALIDATORS
 
+    if ((style & wxBORDER_MASK) == wxBORDER_DEFAULT)
+        style |= wxNO_BORDER;
+
     SetBackgroundColour(parent->GetBackgroundColour()) ;
     SetForegroundColour(parent->GetForegroundColour()) ;
     m_windowStyle = style;
@@ -82,15 +85,13 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
         height = 14;
     }
 
-    DWORD wstyle = WS_VISIBLE | WS_CHILD;
-
-    if ( m_windowStyle & wxCLIP_SIBLINGS )
-      wstyle |= WS_CLIPSIBLINGS;
+    WXDWORD exStyle = 0;
+    WXDWORD wstyle = MSWGetStyle(style, & exStyle) ;
 
     // Now create scrollbar
     DWORD _direction = (style & wxHORIZONTAL) ?
                         SBS_HORZ: SBS_VERT;
-    HWND scroll_bar = CreateWindowEx(MakeExtendedStyle(style), wxT("SCROLLBAR"), wxT("scrollbar"),
+    HWND scroll_bar = CreateWindowEx(exStyle, wxT("SCROLLBAR"), wxT("scrollbar"),
                          _direction | wstyle,
                          0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
                          wxGetInstance(), NULL);
@@ -122,9 +123,40 @@ wxScrollBar::~wxScrollBar(void)
 bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
                               WXWORD pos, WXHWND control)
 {
-    int position = ::GetScrollPos((HWND) control, SB_CTL);
-    int minPos, maxPos;
-    ::GetScrollRange((HWND) control, SB_CTL, &minPos, &maxPos);
+    // current and max positions
+    int position,
+        maxPos, trackPos = pos;
+
+#ifdef __WIN32__
+    // when we're dragging the scrollbar we can't use pos parameter because it
+    // is limited to 16 bits
+    if ( wParam == SB_THUMBPOSITION || wParam == SB_THUMBTRACK )
+    {
+        SCROLLINFO scrollInfo;
+        wxZeroMemory(scrollInfo);
+        scrollInfo.cbSize = sizeof(SCROLLINFO);
+
+        // also get the range if we call GetScrollInfo() anyhow -- this is less
+        // expensive than call it once here and then call GetScrollRange()
+        // below
+        scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_TRACKPOS;
+
+        if ( !::GetScrollInfo(GetHwnd(), SB_CTL, &scrollInfo) )
+        {
+            wxLogLastError(_T("GetScrollInfo"));
+        }
+
+        trackPos = scrollInfo.nTrackPos;
+        position = scrollInfo.nPos;
+        maxPos = scrollInfo.nMax;
+    }
+    else
+#endif // Win32
+    {
+        position = ::GetScrollPos((HWND) control, SB_CTL);
+        int minPos;
+        ::GetScrollRange((HWND) control, SB_CTL, &minPos, &maxPos);
+    }
 
 #if defined(__WIN95__)
     // A page size greater than one has the effect of reducing the effective
@@ -170,36 +202,46 @@ bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
             break;
 
         case SB_THUMBPOSITION:
-            nScrollInc = pos - position;
+            nScrollInc = trackPos - position;
             scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
             break;
 
         case SB_THUMBTRACK:
-            nScrollInc = pos - position;
+            nScrollInc = trackPos - position;
             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
             break;
 
+        case SB_ENDSCROLL:
+            nScrollInc = 0;
+            scrollEvent = wxEVT_SCROLL_ENDSCROLL;
+            break;
+
         default:
             nScrollInc = 0;
     }
 
-    // don't process the event if there is no displacement,
-    // unless this is a thumb release event.
-    if (( nScrollInc == 0 ) && ( scrollEvent != wxEVT_SCROLL_THUMBRELEASE ))
+    if ( nScrollInc )
     {
-        return FALSE;
-    }
+        position += nScrollInc;
 
-    int new_pos = position + nScrollInc;
+        if ( position < 0 )
+            position = 0;
+        if ( position > maxPos )
+            position = maxPos;
 
-    if (new_pos < 0)
-        new_pos = 0;
-    if (new_pos > maxPos)
-        new_pos = maxPos;
+        SetThumbPosition(position);
+    }
+    else if ( scrollEvent != wxEVT_SCROLL_THUMBRELEASE &&
+                scrollEvent != wxEVT_SCROLL_ENDSCROLL )
+    {
+        // don't process the event if there is no displacement,
+        // unless this is a thumb release or end scroll event.
+        return FALSE;
+    }
 
-    SetThumbPosition(new_pos);
     wxScrollEvent event(scrollEvent, m_windowId);
-    event.SetPosition(new_pos);
+    event.SetOrientation(IsVertical() ? wxVERTICAL : wxHORIZONTAL);
+    event.SetPosition(position);
     event.SetEventObject( this );
 
     return GetEventHandler()->ProcessEvent(event);
@@ -208,16 +250,16 @@ bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
 void wxScrollBar::SetThumbPosition(int viewStart)
 {
 #if defined(__WIN95__)
-  SCROLLINFO info;
-  info.cbSize = sizeof(SCROLLINFO);
-  info.nPage = 0;
-  info.nMin = 0;
-  info.nPos = viewStart;
-  info.fMask = SIF_POS ;
-
-  ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, TRUE);
+    SCROLLINFO info;
+    info.cbSize = sizeof(SCROLLINFO);
+    info.nPage = 0;
+    info.nMin = 0;
+    info.nPos = viewStart;
+    info.fMask = SIF_POS ;
+
+    ::SetScrollInfo((HWND) GetHWND(), SB_CTL, &info, TRUE);
 #else
-  ::SetScrollPos((HWND) GetHWND(), SB_CTL, viewStart, TRUE);
+    ::SetScrollPos((HWND) GetHWND(), SB_CTL, viewStart, TRUE);
 #endif
 }