Use wxRendererNative::DrawTitleBarBitmap() for info bar close button.

If supported by the current platform, draw natively-looking close button using
multiple bitmaps for normal, pressed and current stats. Otherwise fall back on
the old wxArtProvider-based bitmap.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62296 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/infobar.cpp

@@ -36,6 +36,7 @@
 #include "wx/infobar.h"
 
 #include "wx/artprov.h"
+#include "wx/renderer.h"
 #include "wx/scopeguard.h"
 #include "wx/sizer.h"
 
@@ -43,6 +44,34 @@ BEGIN_EVENT_TABLE(wxInfoBarGeneric, wxInfoBarBase)
     EVT_BUTTON(wxID_ANY, wxInfoBarGeneric::OnButton)
 END_EVENT_TABLE()
 
+// ----------------------------------------------------------------------------
+// local helpers
+// ----------------------------------------------------------------------------
+
+namespace
+{
+
+#ifdef wxHAS_DRAW_TITLE_BAR_BITMAP
+
+wxBitmap
+GetCloseButtonBitmap(wxWindow *win,
+                     const wxSize& size,
+                     const wxColour& colBg,
+                     int flags = 0)
+{
+    wxBitmap bmp(size);
+    wxMemoryDC dc(bmp);
+    dc.SetBackground(colBg);
+    dc.Clear();
+    wxRendererNative::Get().
+        DrawTitleBarBitmap(win, dc, size, wxTITLEBAR_BUTTON_CLOSE, flags);
+    return bmp;
+}
+
+#endif // wxHAS_DRAW_TITLE_BAR_BITMAP
+
+} // anonymous namespace
+
 // ============================================================================
 // implementation
 // ============================================================================
@@ -69,7 +98,8 @@ bool wxInfoBarGeneric::Create(wxWindow *parent, wxWindowID winid)
         return false;
 
     // use special, easy to notice, colours
-    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_INFOBK));
+    const wxColour colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_INFOBK);
+    SetBackgroundColour(colBg);
     SetOwnForegroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_INFOTEXT));
 
     // create the controls: icon, text and the button to dismiss the
@@ -80,16 +110,31 @@ bool wxInfoBarGeneric::Create(wxWindow *parent, wxWindowID winid)
 
     m_text = new wxStaticText(this, wxID_ANY, "");
 
+#ifdef wxHAS_DRAW_TITLE_BAR_BITMAP
+    const wxSize sizeBmp = wxArtProvider::GetSizeHint(wxART_FRAME_ICON);
+    wxBitmap bmp = GetCloseButtonBitmap(this, sizeBmp, colBg);
+#else // !wxHAS_DRAW_TITLE_BAR_BITMAP
+    wxBitmap bmp = wxArtProvider::GetBitmap(wxART_CLOSE, wxART_MENU);
+#endif // wxHAS_DRAW_TITLE_BAR_BITMAP
     m_button = new wxBitmapButton
                    (
                     this,
                     wxID_ANY,
-                    wxArtProvider::GetBitmap(wxART_CLOSE, wxART_MENU),
+                    bmp,
                     wxDefaultPosition,
                     wxDefaultSize,
                     wxBORDER_NONE
                    );
-    m_button->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_INFOBK));
+
+#ifdef wxHAS_DRAW_TITLE_BAR_BITMAP
+    m_button->SetBitmapPressed(
+        GetCloseButtonBitmap(this, sizeBmp, colBg, wxCONTROL_PRESSED));
+
+    m_button->SetBitmapCurrent(
+        GetCloseButtonBitmap(this, sizeBmp, colBg, wxCONTROL_CURRENT));
+#endif // wxHAS_DRAW_TITLE_BAR_BITMAP
+
+    m_button->SetBackgroundColour(colBg);
     m_button->SetToolTip(_("Hide this notification message."));
 
     // center the text inside the sizer with an icon to the left of it and a