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Faster opening of preferences.

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The slow opening was caused by sorting lists of commands.  The comparison function was slow because it created new strings, entailing malloc/free and used translation in the function.  Comparison function was being called about 4,000 times.
This commit is contained in:
James Crook 2017-05-24 22:01:19 +01:00
parent 01356f9e3e
commit 8afeed5f78
2 changed files with 24 additions and 31 deletions
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53
src/widgets/KeyView.cpp
View File

@ -47,6 +47,9 @@ BEGIN_EVENT_TABLE(KeyView, wxVListBox)
EVT_SCROLLWIN(KeyView::OnScroll)
END_EVENT_TABLE();
wxString KeyView::CommandTranslated="Command";
// ============================================================================
// KeyView class
// ============================================================================
@ -915,6 +918,12 @@ KeyView::RefreshLines()
mLines.Add(&node);
}
}
//To see how many lines are being sorted (and how often).
//wxLogDebug("Sorting %i lines", mLines.GetCount());
// Speed up the comparison function used in sorting
// by only translating this string once.
CommandTranslated = _("Command");
// Sort list based on type
switch (mViewType)
@ -1544,48 +1553,30 @@ KeyView::CmpKeyNodeByTree(KeyNode ***n1, KeyNode ***n2)
{
KeyNode *t1 = (**n1);
KeyNode *t2 = (**n2);
wxString k1 = t1->label;
wxString k2 = t2->label;
unsigned int k1UInt= 0xffffffff;
unsigned int k2UInt= 0xffffffff;
// This is a "command" node if its category is "Command"
// and it is a child of the "Command" category. This latter
// test ensures that the "Command" parent will be handled
// as a "menu" node and remain at the bottom of the list.
if (t1->category == _("Command") && !t1->isparent)
{
// A "command" node, so prepend the highest hex value
k1.Printf(wxT("ffffffff%s"), t1->label.c_str());
}
else
{
// A "menu" node, so prepend the line number
k1.Printf(wxT("%08x%s"), (unsigned int) t1->line, t1->label.c_str());
}
if (t1->category != CommandTranslated || t1->isparent)
k1UInt = (unsigned int) t1->line;
// See above for explanation
if (t2->category == _("Command") && !t2->isparent)
{
// A "command" node, so prepend the highest hex value
k2.Printf(wxT("ffffffff%s"), t2->label.c_str());
}
else
{
// A "menu" node, so prepend the line number
k2.Printf(wxT("%08x%s"), (unsigned int) t2->line, t2->label.c_str());
}
if (t2->category != CommandTranslated || t2->isparent)
k2UInt = (unsigned int) t2->line;
// See wxWidgets documentation for explanation of comparison results.
// These will produce an ascending order.
if (k1 < k2)
{
if( k1UInt < k2UInt )
return -1;
}
if( k1UInt > k2UInt )
return +1;
if (k1 > k2)
{
if( t1->label < t2->label )
return -1;
if( t1->label > t2->label )
return 1;
}
return 0;
}

2
src/widgets/KeyView.h
View File

@ -128,6 +128,8 @@ private:
void OnKeyDown(wxKeyEvent & event);
void OnLeftDown(wxMouseEvent & event);
static wxString CommandTranslated;
static int CmpKeyNodeByTree(KeyNode ***n1, KeyNode ***n2);
static int CmpKeyNodeByName(KeyNode ***n1, KeyNode ***n2);
static int CmpKeyNodeByKey(KeyNode ***n1, KeyNode ***n2);