// Purpose: wxBannerWindow class implementation
// Author: Vadim Zeitlin
// Created: 2011-08-16
-// RCS-ID: $Id$
// Copyright: (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
} // anonymous namespace
-extern WXDLLEXPORT_DATA(const char) wxBannerWindowNameStr[] = "bannerwindow";
+const char wxBannerWindowNameStr[] = "bannerwindow";
BEGIN_EVENT_TABLE(wxBannerWindow, wxWindow)
EVT_SIZE(wxBannerWindow::OnSize)
{
m_bitmap = bmp;
+ m_colBitmapBg = wxColour();
+
InvalidateBestSize();
Refresh();
}
}
-void wxBannerWindow::DrawBitmapBackground(wxDC& dc)
+wxColour wxBannerWindow::GetBitmapBg()
{
+ if ( m_colBitmapBg.IsOk() )
+ return m_colBitmapBg;
+
+ // Determine the colour to use to extend the bitmap. It's the colour of the
+ // bitmap pixels at the edge closest to the area where it can be extended.
+ wxImage image(m_bitmap.ConvertToImage());
+
+ // The point we get the colour from. The choice is arbitrary and in general
+ // the bitmap should have the same colour on the entire edge of this point
+ // for extending it to look good.
+ wxPoint p;
+
+ wxSize size = image.GetSize();
+ size.x--;
+ size.y--;
+
switch ( m_direction )
{
case wxTOP:
case wxBOTTOM:
+ // The bitmap will be extended to the right.
+ p.x = size.x;
+ p.y = 0;
+ break;
+
+ case wxLEFT:
+ // The bitmap will be extended from the top.
+ p.x = 0;
+ p.y = 0;
+ break;
+
case wxRIGHT:
- // Draw the bitmap normally, its rightmost or bottom part could be
- // truncated, as it's meant to be.
+ // The bitmap will be extended to the bottom.
+ p.x = 0;
+ p.y = size.y;
+ break;
+
+ // This case is there only to prevent g++ warnings about not handling
+ // some enum elements in the switch, it can't really happen.
+ case wxALL:
+ wxFAIL_MSG( wxS("Unreachable") );
+ }
+
+ m_colBitmapBg.Set(image.GetRed(p.x, p.y),
+ image.GetGreen(p.x, p.y),
+ image.GetBlue(p.x, p.y));
+
+ return m_colBitmapBg;
+}
+
+void wxBannerWindow::DrawBitmapBackground(wxDC& dc)
+{
+ // We may need to fill the part of the background not covered by the bitmap
+ // with the solid colour extending the bitmap, this rectangle will hold the
+ // area to be filled (which could be empty if the bitmap is big enough).
+ wxRect rectSolid;
+
+ const wxSize size = GetClientSize();
+
+ switch ( m_direction )
+ {
+ case wxTOP:
+ case wxBOTTOM:
+ // Draw the bitmap at the origin, its rightmost could be truncated,
+ // as it's meant to be.
dc.DrawBitmap(m_bitmap, 0, 0);
+
+ rectSolid.x = m_bitmap.GetWidth();
+ rectSolid.width = size.x - rectSolid.x;
+ rectSolid.height = size.y;
break;
case wxLEFT:
// The top most part of the bitmap may be truncated but its bottom
// must be always visible so intentionally draw it possibly partly
// outside of the window.
- dc.DrawBitmap(m_bitmap,
- 0, GetClientSize().y - m_bitmap.GetHeight());
+ rectSolid.width = size.x;
+ rectSolid.height = size.y - m_bitmap.GetHeight();
+ dc.DrawBitmap(m_bitmap, 0, rectSolid.height);
+ break;
+
+ case wxRIGHT:
+ // Draw the bitmap at the origin, possibly truncating its
+ // bottommost part.
+ dc.DrawBitmap(m_bitmap, 0, 0);
+
+ rectSolid.y = m_bitmap.GetHeight();
+ rectSolid.height = size.y - rectSolid.y;
+ rectSolid.width = size.x;
break;
// This case is there only to prevent g++ warnings about not handling
case wxALL:
wxFAIL_MSG( wxS("Unreachable") );
}
+
+ if ( rectSolid.width > 0 && rectSolid.height > 0 )
+ {
+ dc.SetPen(*wxTRANSPARENT_PEN);
+ dc.SetBrush(GetBitmapBg());
+ dc.DrawRectangle(rectSolid);
+ }
}
void