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Bug144: Editing performance when Karaoke window is open and very many labels...

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... in the first label track.

Problem was calling wxTextCtrl::AppendText once per label, per push of undo
stack, each call causing event handling.

Now call it only once per push.
This commit is contained in:
Paul Licameli
2016-01-21 22:03:28 -05:00
parent 97e8fe3864
commit 376fc0ebf2
3 changed files with 44 additions and 25 deletions
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6
src/Lyrics.h
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@@ -18,6 +18,8 @@
#include <wx/panel.h>
#include <wx/textctrl.h>
class LabelTrack;
#define LYRICS_DEFAULT_WIDTH 608
#define LYRICS_DEFAULT_HEIGHT 280
@@ -73,7 +75,7 @@ class Lyrics : public wxPanel
virtual ~Lyrics();
void Clear();
void Add(double t, wxString syllable);
void AddLabels(const LabelTrack *pLT);
void Finish(double finalT);
int FindSyllable(long startChar); // Find the syllable whose char0 <= startChar <= char1.
@@ -103,6 +105,8 @@ class Lyrics : public wxPanel
void HandleLayout();
private:
void Add(double t, wxString syllable, wxString &highlightText);
unsigned int GetDefaultFontSize() const; // Depends on mLyricsStyle. Call only after mLyricsStyle is set.
void SetDrawnFont(wxDC *dc); // for kBouncingBallLyrics