diff options
| author | nyamatongwe <unknown> | 2003-03-13 12:54:57 +0000 |
|---|---|---|
| committer | nyamatongwe <unknown> | 2003-03-13 12:54:57 +0000 |
| commit | 7c0fd4b35c851e39842b9187a62ce785cdcab605 (patch) | |
| tree | 945237310685eacc7e222196fabf3afb7a727019 | |
| parent | 3712f66d6b8eb6b1fdb5947a51f2b9cf12a72e6c (diff) | |
| download | scintilla-mirror-7c0fd4b35c851e39842b9187a62ce785cdcab605.tar.gz | |
Avoiding drawing strings consisting entirely of space characters
in transparent mode.
Remembering pixel widths of all single character strings as many single
character runs occur in source code.
These add up to a 22% speed improvement.
| -rw-r--r-- | gtk/PlatGTK.cxx | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/gtk/PlatGTK.cxx b/gtk/PlatGTK.cxx index 073e51faa..56ead18a3 100644 --- a/gtk/PlatGTK.cxx +++ b/gtk/PlatGTK.cxx @@ -49,6 +49,7 @@ class FontHandle { public: int ascent; + int width[128]; GdkFont *pfont; #ifdef USE_PANGO PangoFontDescription *pfd; @@ -59,12 +60,18 @@ public: #ifdef USE_PANGO pfd = 0; #endif + for (int i=0;i<128;i++) { + width[i] = 0; + } } #ifdef USE_PANGO FontHandle(PangoFontDescription *pfd_) { ascent = 0; pfont = 0; pfd = pfd_; + for (int i=0;i<128;i++) { + width[i] = 0; + } } #endif ~FontHandle() { @@ -1070,10 +1077,15 @@ void SurfaceImpl::DrawTextClipped(PRectangle rc, Font &font_, int ybase, const c DrawTextBase(rc, font_, ybase, s, len, fore); } -// On GTK+, exactly same as DrawTextNoClip void SurfaceImpl::DrawTextTransparent(PRectangle rc, Font &font_, int ybase, const char *s, int len, ColourAllocated fore) { - DrawTextBase(rc, font_, ybase, s, len, fore); + // Avoid drawing spaces in transparent mode + for (int i=0;i<len;i++) { + if (s[i] != ' ') { + DrawTextBase(rc, font_, ybase, s, len, fore); + return; + } + } } void SurfaceImpl::MeasureWidths(Font &font_, const char *s, int len, int *positions) { @@ -1081,6 +1093,10 @@ void SurfaceImpl::MeasureWidths(Font &font_, const char *s, int len, int *positi int totalWidth = 0; #ifdef USE_PANGO if (PFont(font_)->pfd) { + if (len == 1 && (static_cast<unsigned char>(*s) <= 127) && PFont(font_)->width[*s]) { + positions[0] = PFont(font_)->width[*s]; + return; + } PangoRectangle pos; pango_layout_set_font_description(layout, PFont(font_)->pfd); if (unicodeMode) { @@ -1131,6 +1147,9 @@ void SurfaceImpl::MeasureWidths(Font &font_, const char *s, int len, int *positi delete []utfForm; } } + if (len == 1 && (static_cast<unsigned char>(*s) <= 127)) { + PFont(font_)->width[*s] = positions[0]; + } return; } #endif |