Added wxTLW::SetShape and implementations for wxGTK, wxMSW and an

empty stub for wxMac. Added some generic helpers and a new ctor to wxRegion. Added samples/shaped. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19857 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2003-03-28 23:05:05 +00:00
parent 7728856b75
commit 1542ea396a
59 changed files with 5861 additions and 1155 deletions
--- a/src/common/rgncmn.cpp
+++ b/src/common/rgncmn.cpp
@@ -0,0 +1,118 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        rgncmn.cpp
+// Purpose:     Methods of wxRegion that have a generic implementation
+// Author:      Robin Dunn
+// Modified by:
+// Created:     27-Mar-2003
+// RCS-ID:      $Id$
+// Copyright:   (c) Robin Dunn
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef __GNUG__
+#pragma implementation "rgncmn.h"
+#endif
+
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+#include "wx/region.h"
+#include "wx/bitmap.h"
+#include "wx/dcmemory.h"
+
+
+//---------------------------------------------------------------------------
+
+
+
+wxBitmap wxRegion::ConvertToBitmap() const
+{
+    wxRect box = GetBox();
+    wxBitmap bmp(box.GetRight(), box.GetBottom());
+    wxMemoryDC dc;
+    dc.SelectObject(bmp);
+    dc.SetBackground(*wxWHITE_BRUSH);
+    dc.Clear();
+    dc.SetClippingRegion(*this);
+    dc.SetBackground(*wxBLACK_BRUSH);
+    dc.Clear();
+    dc.SelectObject(wxNullBitmap);
+    return bmp;
+}
+
+//---------------------------------------------------------------------------
+
+bool wxRegion::Union(const wxBitmap& bmp,
+                     const wxColour& transColour,
+                     int   tolerance)
+{
+    unsigned char loR, loG, loB;
+    unsigned char hiR, hiG, hiB;
+
+    wxCHECK_MSG((bmp.GetMask() != NULL) || transColour.Ok(),
+                FALSE,
+                wxT("Either the bitmap should have a mask or a colour should be given."));
+
+    wxImage image = bmp.ConvertToImage();
+
+    if (image.HasMask())
+    {
+        loR = image.GetMaskRed();
+        loG = image.GetMaskGreen();
+        loB = image.GetMaskBlue();
+    }
+    else
+    {
+        loR = transColour.Red();
+        loG = transColour.Green();
+        loB = transColour.Blue();
+    }
+
+    hiR = wxMin(0xFF, loR + tolerance);
+    hiG = wxMin(0xFF, loG + tolerance);
+    hiB = wxMin(0xFF, loB + tolerance);
+
+    // Loop through the image row by row, pixel by pixel, building up
+    // rectangles to add to the region.
+    int width = image.GetWidth();
+    int height = image.GetHeight();
+    for (int y=0; y < height; y++)
+    {
+        wxRect rect;
+        rect.y = y;
+        rect.height = 1;
+
+        for (int x=0; x < width; x++)
+        {
+            // search for a continuous range of non-transparent pixels
+            int x0 = x;
+            while ( x < width)
+            {
+                unsigned char R = image.GetRed(x,y);
+                unsigned char G = image.GetGreen(x,y);
+                unsigned char B = image.GetBlue(x,y);
+                if (( R >= loR && R <= hiR) &&
+                    ( G >= loG && G <= hiG) &&
+                    ( B >= loB && B <= hiB))  // It's transparent
+                    break;
+                x++;
+            }
+
+            // Add the run of non-transparent pixels (if any) to the region
+            if (x > x0) {
+                rect.x = x0;
+                rect.width = x - x0;
+                Union(rect);
+            }
+        }
+    }
+
+    return TRUE;
+}
+
+//---------------------------------------------------------------------------