X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7e410431f34f973367763ae6fb91ad78c9b80a94..2d956b58023a4955313a1c1531bc70a0deb0b831:/src/gtk/cursor.cpp

diff --git a/src/gtk/cursor.cpp b/src/gtk/cursor.cpp
index c233aecccc..8bcc0d0ce1 100644
--- a/src/gtk/cursor.cpp
+++ b/src/gtk/cursor.cpp
@@ -58,6 +58,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
 
 wxCursor::wxCursor()
 {
+
 }
 
 wxCursor::wxCursor( int cursorId )
@@ -67,7 +68,9 @@ wxCursor::wxCursor( int cursorId )
     GdkCursorType gdk_cur = GDK_LEFT_PTR;
     switch (cursorId)
     {
+        case wxCURSOR_ARROW:            // fall through to default
         case wxCURSOR_DEFAULT:          gdk_cur = GDK_LEFT_PTR; break;
+        case wxCURSOR_RIGHT_ARROW:      gdk_cur = GDK_RIGHT_PTR; break;
         case wxCURSOR_HAND:             gdk_cur = GDK_HAND1; break;
         case wxCURSOR_CROSS:            gdk_cur = GDK_CROSSHAIR; break;
         case wxCURSOR_SIZEWE:           gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
@@ -102,8 +105,6 @@ wxCursor::wxCursor( int cursorId )
         default:
             wxFAIL_MSG(wxT("unsupported cursor type"));
             // will use the standard one
-
-        case wxCURSOR_ARROW:
             break;
     }
 
@@ -145,6 +146,145 @@ wxCursor::wxCursor( const wxCursor &cursor )
     Ref( cursor );
 }
 
+#if wxUSE_IMAGE
+
+wxCursor::wxCursor( const wxImage & image )
+{
+    unsigned char * rgbBits = image.GetData();
+    int w = image.GetWidth() ;
+    int h = image.GetHeight();
+    bool bHasMask = image.HasMask();
+    int imagebitcount = (w*h)/8;
+
+    unsigned char * bits = new unsigned char [imagebitcount];
+    unsigned char * maskBits = new unsigned char [imagebitcount];
+
+    int i, j, i8; unsigned char c, cMask;
+    for (i=0; i<imagebitcount; i++)
+    {
+        bits[i] = 0;
+        i8 = i * 8;
+
+        cMask = 1;
+        for (j=0; j<8; j++)
+        {
+            // possible overflow if we do the summation first ?
+            c = rgbBits[(i8+j)*3]/3 + rgbBits[(i8+j)*3+1]/3 + rgbBits[(i8+j)*3+2]/3;
+            //if average value is > mid grey
+            if (c>127)
+                bits[i] = bits[i] | cMask;
+            cMask = cMask * 2;
+        }
+    }
+
+    unsigned long keyMaskColor;
+    if (bHasMask)
+    {
+        unsigned char
+            r = image.GetMaskRed(),
+            g = image.GetMaskGreen(),
+            b = image.GetMaskBlue();
+
+        for (i=0; i<imagebitcount; i++)
+        {
+            maskBits[i] = 0x0;
+            i8 = i * 8;
+
+            cMask = 1;
+            for (j=0; j<8; j++)
+            {
+                if (rgbBits[(i8+j)*3] != r || rgbBits[(i8+j)*3+1] != g || rgbBits[(i8+j)*3+2] != b)
+                    maskBits[i] = maskBits[i] | cMask;
+                cMask = cMask * 2;
+            }
+        }
+
+        keyMaskColor = (r << 16) | (g << 8) | b;
+    }
+    else // no mask
+    {
+        for (i=0; i<imagebitcount; i++)
+            maskBits[i] = 0xFF;
+
+        // init it to avoid compiler warnings
+        keyMaskColor = 0;
+    }
+
+    // find the most frequent color(s) it seems a waste of effort to copy the
+    // image but otherwise we need to remove the const modifier ??
+    wxImage tmpImage = image.Copy();
+    wxImageHistogram histogram;
+
+    // colors as rrggbb
+    unsigned long key;
+    unsigned long value;
+
+    tmpImage.ComputeHistogram(histogram);
+
+    long MostFreqCol = 0;
+    unsigned long nMost = 0;
+    long NextFreqCol = 0;
+    unsigned long nNext = 0;
+    wxImageHistogram::iterator entry = histogram.begin();
+
+    while ( entry != histogram.end() )
+    {
+        value = entry->second.value;
+        key = entry->first;
+        if ( !bHasMask || (key != keyMaskColor) )
+        {
+            if (value > nMost)
+            {
+                nMost = value;
+                MostFreqCol = key;
+            }
+            else if (value > nNext)
+            {
+                nNext = value;
+                NextFreqCol = key;
+            }
+        }
+    }
+
+    wxColour fg = wxColour ( (unsigned char)(MostFreqCol >> 16),
+                             (unsigned char)(MostFreqCol >> 8),
+                             (unsigned char)(MostFreqCol) );
+
+    wxColour bg = wxColour ( (unsigned char)(NextFreqCol >> 16),
+                             (unsigned char)(NextFreqCol >> 8),
+                             (unsigned char)(NextFreqCol) );
+
+    int hotSpotX=0;
+    int hotSpotY=0;
+
+    if (image.HasOption(wxCUR_HOTSPOT_X))
+        hotSpotX = image.GetOptionInt(wxCUR_HOTSPOT_X);
+    if (image.HasOption(wxCUR_HOTSPOT_Y))
+        hotSpotY = image.GetOptionInt(wxCUR_HOTSPOT_Y);
+
+    if (hotSpotX < 0 || hotSpotX >= w)
+        hotSpotX = 0;
+    if (hotSpotY < 0 || hotSpotY >= h)
+        hotSpotY = 0;
+
+    GdkBitmap *data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits,
+        w, h );
+    GdkBitmap *mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) maskBits,
+        w, h );
+
+    m_refData = new wxCursorRefData;
+    M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
+        data, mask, fg.GetColor(), bg.GetColor(),
+        hotSpotX, hotSpotY );
+
+    gdk_bitmap_unref( data );
+    gdk_bitmap_unref( mask );
+    delete [] bits;
+    delete [] maskBits;
+}
+
+#endif // wxUSE_IMAGE
+
 wxCursor::~wxCursor()
 {
 }
@@ -224,7 +364,7 @@ void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
 
     if (wxTheApp)
         wxTheApp->SendIdleEvents();
-        
+
     gdk_flush();
 }