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fixed infinite loop in wxCursor(wxImage) ctor

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15808 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2002-06-12 14:12:19 +00:00
parent 1a685a59a0
commit fa1fcc6642
2 changed files with 66 additions and 54 deletions
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60
src/gtk/cursor.cpp
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@@ -211,24 +211,21 @@ wxCursor::wxCursor( const wxImage & image )
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();
// find the most frequent color(s)
wxImageHistogram histogram;
image.ComputeHistogram(histogram);
// colors as rrggbb
unsigned long key;
unsigned long value;
tmpImage.ComputeHistogram(histogram);
long MostFreqCol = 0;
long colMostFreq = 0;
unsigned long nMost = 0;
long NextFreqCol = 0;
long colNextMostFreq = 0;
unsigned long nNext = 0;
wxImageHistogram::iterator entry = histogram.begin();
while ( entry != histogram.end() )
for ( wxImageHistogram::iterator entry = histogram.begin();
entry != histogram.end();
++entry )
{
value = entry->second.value;
key = entry->first;
@@ -237,46 +234,55 @@ wxCursor::wxCursor( const wxImage & image )
if (value > nMost)
{
nMost = value;
MostFreqCol = key;
colMostFreq = key;
}
else if (value > nNext)
{
nNext = value;
NextFreqCol = key;
colNextMostFreq = key;
}
}
}
wxColour fg = wxColour ( (unsigned char)(MostFreqCol >> 16),
(unsigned char)(MostFreqCol >> 8),
(unsigned char)(MostFreqCol) );
wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16),
(unsigned char)(colMostFreq >> 8),
(unsigned char)(colMostFreq) );
wxColour bg = wxColour ( (unsigned char)(NextFreqCol >> 16),
(unsigned char)(NextFreqCol >> 8),
(unsigned char)(NextFreqCol) );
wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16),
(unsigned char)(colNextMostFreq >> 8),
(unsigned char)(colNextMostFreq) );
int hotSpotX=0;
int hotSpotY=0;
int hotSpotX;
int hotSpotY;
if (image.HasOption(wxCUR_HOTSPOT_X))
hotSpotX = image.GetOptionInt(wxCUR_HOTSPOT_X);
else
hotSpotX = 0;
if (image.HasOption(wxCUR_HOTSPOT_Y))
hotSpotY = image.GetOptionInt(wxCUR_HOTSPOT_Y);
else
hotSpotY = 0;
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 );
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 );
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 );