X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/eb74a51f7ed2a76dbb443e48727a410a0c81247a..1aff4201c36daec702cabc869c0bf899c56ba8cc:/src/msw/button.cpp

diff --git a/src/msw/button.cpp b/src/msw/button.cpp
index 6be8b813b3..407981a03a 100644
--- a/src/msw/button.cpp
+++ b/src/msw/button.cpp
@@ -37,13 +37,14 @@
     #include "wx/dcscreen.h"
     #include "wx/dcclient.h"
     #include "wx/toplevel.h"
-    #include "wx/imaglist.h"
 #endif
 
+#include "wx/imaglist.h"
 #include "wx/stockitem.h"
 #include "wx/msw/private.h"
 #include "wx/msw/private/button.h"
 #include "wx/msw/private/dc.h"
+#include "wx/private/window.h"
 
 using namespace wxMSWImpl;
 
@@ -102,6 +103,12 @@ using namespace wxMSWImpl;
     #define DT_HIDEPREFIX       0x00100000
 #endif
 
+// set the value for BCM_SETSHIELD (for the UAC shield) if it's not defined in
+// the header
+#ifndef BCM_SETSHIELD
+    #define BCM_SETSHIELD       0x160c
+#endif
+
 // ----------------------------------------------------------------------------
 // button image data
 // ----------------------------------------------------------------------------
@@ -432,7 +439,9 @@ void wxMSWButton::UpdateMultilineStyle(HWND hwnd, const wxString& label)
         ::SetWindowLong(hwnd, GWL_STYLE, styleNew);
 }
 
-wxSize wxMSWButton::GetFittingSize(wxWindow *win, const wxSize& sizeLabel)
+wxSize wxMSWButton::GetFittingSize(wxWindow *win,
+                                   const wxSize& sizeLabel,
+                                   int flags)
 {
     // FIXME: this is pure guesswork, need to retrieve the real button margins
     wxSize sizeBtn = sizeLabel;
@@ -440,24 +449,31 @@ wxSize wxMSWButton::GetFittingSize(wxWindow *win, const wxSize& sizeLabel)
     sizeBtn.x += 3*win->GetCharWidth();
     sizeBtn.y = 11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(sizeLabel.y)/10;
 
+    // account for the shield UAC icon if we have it
+    if ( flags & Size_AuthNeeded )
+        sizeBtn.x += wxSystemSettings::GetMetric(wxSYS_SMALLICON_X);
+
     return sizeBtn;
 }
 
-wxSize wxMSWButton::ComputeBestSize(wxControl *btn)
+wxSize wxMSWButton::ComputeBestSize(wxControl *btn, int flags)
 {
     wxClientDC dc(btn);
 
     wxSize sizeBtn;
     dc.GetMultiLineTextExtent(btn->GetLabelText(), &sizeBtn.x, &sizeBtn.y);
 
-    sizeBtn = GetFittingSize(btn, sizeBtn);
+    sizeBtn = GetFittingSize(btn, sizeBtn, flags);
 
     // all buttons have at least the standard size unless the user explicitly
     // wants them to be of smaller size and used wxBU_EXACTFIT style when
     // creating the button
     if ( !btn->HasFlag(wxBU_EXACTFIT) )
     {
-        wxSize sizeDef = wxButton::GetDefaultSize();
+        // The size of a standard button in the dialog units is 50x14, use it.
+        // Note that we intentionally don't use GetDefaultSize() here, because
+        // it's inexact -- dialog units depend on this dialog's font.
+        wxSize sizeDef = btn->ConvertDialogToPixels(wxSize(50, 14));
         if ( sizeBtn.x < sizeDef.x )
             sizeBtn.x = sizeDef.x;
         if ( sizeBtn.y < sizeDef.y )
@@ -482,6 +498,8 @@ bool wxButton::Create(wxWindow *parent,
                       const wxValidator& validator,
                       const wxString& name)
 {
+    m_authNeeded = false;
+
     wxString label(lbl);
     if (label.empty() && wxIsStockID(id))
     {
@@ -574,10 +592,16 @@ wxSize wxButton::DoGetBestSize() const
 {
     wxSize size;
 
-    // account for the text part
-    if ( ShowsLabel() )
+    // account for the text part if we have it or if we don't have any image at
+    // all (buttons initially created with empty label should still have a non
+    // zero size)
+    if ( ShowsLabel() || !m_imageData )
     {
-        size = wxMSWButton::ComputeBestSize(const_cast<wxButton *>(this));
+        int flags = 0;
+        if ( GetAuthNeeded() )
+            flags |= wxMSWButton::Size_AuthNeeded;
+
+        size = wxMSWButton::ComputeBestSize(const_cast<wxButton *>(this), flags);
     }
 
     if ( m_imageData )
@@ -657,16 +681,20 @@ wxSize wxButtonBase::GetDefaultSize()
         wxScreenDC dc;
         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 
-        // the size of a standard button in the dialog units is 50x14,
-        // translate this to pixels
-        // NB1: the multipliers come from the Windows convention
-        // NB2: the extra +1/+2 were needed to get the size be the same as the
-        //      size of the buttons in the standard dialog - I don't know how
-        //      this happens, but on my system this size is 75x23 in pixels and
-        //      23*8 isn't even divisible by 14... Would be nice to understand
-        //      why these constants are needed though!
-        s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
-        s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
+        // The size of a standard button in the dialog units is 50x14,
+        // translate this to pixels.
+        //
+        // Windows' computes dialog units using average character width over
+        // upper- and lower-case ASCII alphabet and not using the average
+        // character width metadata stored in the font; see
+        // http://support.microsoft.com/default.aspx/kb/145994 for detailed
+        // discussion.
+        //
+        // NB: wxMulDivInt32() is used, because it correctly rounds the result
+
+        const wxSize base = wxPrivate::GetAverageASCIILetterSize(dc);
+        s_sizeBtn.x = wxMulDivInt32(50, base.x, 4);
+        s_sizeBtn.y = wxMulDivInt32(14, base.y, 8);
     }
 
     return s_sizeBtn;
@@ -926,7 +954,7 @@ WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 #if wxUSE_UXTHEME
                 wxUxThemeEngine::GetIfActive() ||
 #endif // wxUSE_UXTHEME
-                m_imageData && m_imageData->GetBitmap(State_Current).IsOk()
+                 (m_imageData && m_imageData->GetBitmap(State_Current).IsOk())
                 )
            )
         {
@@ -938,6 +966,26 @@ WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 }
 
+// ----------------------------------------------------------------------------
+// authentication needed handling
+// ----------------------------------------------------------------------------
+
+bool wxButton::DoGetAuthNeeded() const
+{
+    return m_authNeeded;
+}
+
+void wxButton::DoSetAuthNeeded(bool show)
+{
+    // show/hide UAC symbol on Windows Vista and later
+    if ( wxGetWinVersion() >= wxWinVersion_6 )
+    {
+        m_authNeeded = show;
+        ::SendMessage(GetHwnd(), BCM_SETSHIELD, 0, show);
+        InvalidateBestSize();
+    }
+}
+
 // ----------------------------------------------------------------------------
 // button images
 // ----------------------------------------------------------------------------
@@ -992,6 +1040,7 @@ void wxButton::DoSetBitmapMargins(wxCoord x, wxCoord y)
     wxCHECK_RET( m_imageData, "SetBitmap() must be called first" );
 
     m_imageData->SetBitmapMargins(x, y);
+    InvalidateBestSize();
 }
 
 void wxButton::DoSetBitmapPosition(wxDirection dir)
@@ -999,6 +1048,7 @@ void wxButton::DoSetBitmapPosition(wxDirection dir)
     wxCHECK_RET( m_imageData, "SetBitmap() must be called first" );
 
     m_imageData->SetBitmapPosition(dir);
+    InvalidateBestSize();
 }
 
 // ----------------------------------------------------------------------------