Fix horizontal mouse wheel scrolling in wxGTK.

[wxWidgets.git] / src / generic / textmeasure.cpp

diff --git a/src/generic/textmeasure.cpp b/src/generic/textmeasure.cpp
index 788e1f66e5015338ce2255fde010846ae4f6460c..55bb735d9c43678261093e8ed281d5968f16dd2b 100644 (file)
--- a/src/generic/textmeasure.cpp
+++ b/src/generic/textmeasure.cpp
@@ -3,7 +3,6 @@
 // Purpose:
 // Author:      Vadim Zeitlin
 // Created:     2012-10-17
-// RCS-ID:      $Id$
 // Copyright:   (c) 2012 Vadim Zeitlin <vadim@wxwidgets.org>
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
@@ -23,6 +22,11 @@
     #pragma hdrstop
 #endif
 
+#ifndef WX_PRECOMP
+    #include "wx/window.h"
+    #include "wx/dc.h"
+#endif //WX_PRECOMP
+
 #include "wx/private/textmeasure.h"
 
 #if wxUSE_GENERIC_TEXTMEASURE
@@ -54,78 +58,11 @@ void wxTextMeasure::DoGetTextExtent(const wxString& string,
     //else: we already asserted in the ctor, don't do it any more
 }
 
-// Each element of the widths array will be the width of the string up to and
-// including the corresponding character in text.  This is the generic
-// implementation, the port-specific classes should do this with native APIs
-// if available and if faster.  Note: pango_layout_index_to_pos is much slower
-// than calling GetTextExtent!!
-
-#define FWC_SIZE 256
-
-class FontWidthCache
-{
-public:
-    FontWidthCache() : m_scaleX(1), m_widths(NULL) { }
-    ~FontWidthCache() { delete []m_widths; }
-
-    void Reset()
-    {
-        if ( !m_widths )
-            m_widths = new int[FWC_SIZE];
-
-        memset(m_widths, 0, sizeof(int)*FWC_SIZE);
-    }
-
-    wxFont m_font;
-    double m_scaleX;
-    int *m_widths;
-};
-
-static FontWidthCache s_fontWidthCache;
-
 bool wxTextMeasure::DoGetPartialTextExtents(const wxString& text,
                                             wxArrayInt& widths,
                                             double scaleX)
 {
-    int totalWidth = 0;
-
-    // reset the cache if font or horizontal scale have changed
-    if ( !s_fontWidthCache.m_widths ||
-         !wxIsSameDouble(s_fontWidthCache.m_scaleX, scaleX) ||
-         (s_fontWidthCache.m_font != *m_font) )
-    {
-        s_fontWidthCache.Reset();
-        s_fontWidthCache.m_font = *m_font;
-        s_fontWidthCache.m_scaleX = scaleX;
-    }
-
-    // Calculate the position of each character based on the widths of
-    // the previous characters. This is inexact for not fixed fonts.
-    int n = 0;
-    for ( wxString::const_iterator it = text.begin();
-          it != text.end();
-          ++it )
-    {
-        const wxChar c = *it;
-        unsigned int c_int = (unsigned int)c;
-
-        int w;
-        if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0))
-        {
-            w = s_fontWidthCache.m_widths[c_int];
-        }
-        else
-        {
-            DoGetTextExtent(c, &w, NULL);
-            if (c_int < FWC_SIZE)
-                s_fontWidthCache.m_widths[c_int] = w;
-        }
-
-        totalWidth += w;
-        widths[n++] = totalWidth;
-    }
-
-    return true;
+    return wxTextMeasureBase::DoGetPartialTextExtents(text, widths, scaleX);
 }
 
 #endif // wxUSE_GENERIC_TEXTMEASURE