DO NOT REPLY TO THIS MESSAGE. INSTEAD, POST ANY RESPONSES TO THE LINK BELOW.
[STR New]
Link: http://www.fltk.org/str.php?L2530
Version: 1.3-current
Attached file "fast_mac_text.patch"...
Link: http://www.fltk.org/str.php?L2530
Version: 1.3-current
Index: src/fl_font_mac.cxx
===================================================================
--- src/fl_font_mac.cxx (revision 8287)
+++ src/fl_font_mac.cxx (working copy)
@@ -69,7 +69,15 @@
ascent = (short)(CTFontGetAscent(fontref) + 0.5);
descent = (short)(CTFontGetDescent(fontref) + 0.5);
q_width = w + 0.5;
- }
+ // memorize in array glyph_advances the width of all characters with unicode
<= 0xFF
+ CGSize advance_size;
+ for (int i = 0x20; i < glyph_count; i++) {
+ CTFontGetGlyphsForCharacters(fontref, (const UniChar*)&i, glyph, 1);
+ CTFontGetAdvancesForGlyphs(fontref, kCTFontHorizontalOrientation, glyph,
&advance_size, 1);
+ glyph_advances[i] = advance_size.width;
+ }
+ memset(glyph_advances, 0, 0x20 * sizeof(CGFloat));
+}
else {
#endif
#if ! __LP64__
@@ -270,6 +278,16 @@
}
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
if(fl_mac_os_version >= 0x1050) {
+ double retval = 0;
+ int i;
+ // if string is only made of characters with unicode <= 0xFF, its width can
be computed fast
+ for (i = 0; i < n; i++) {
+ if (txt[i] >= Fl_Font_Descriptor::glyph_count) break;
+ retval += fl_fontsize->glyph_advances[txt[i]];
+ }
+ if (i >= n) {
+ return retval;
+ }
CTFontRef fontref = fl_fontsize->fontref;
CFStringRef str = CFStringCreateWithBytes(NULL, (const UInt8*)txt, n *
sizeof(UniChar), kCFStringEncodingUTF16, false);
CFAttributedStringRef astr = CFAttributedStringCreate(NULL, str, NULL);
@@ -279,7 +297,7 @@
CFRelease(str);
CTLineRef ctline = CTLineCreateWithAttributedString(mastr);
CFRelease(mastr);
- double retval = CTLineGetTypographicBounds(ctline, NULL, NULL, NULL);
+ retval = CTLineGetTypographicBounds(ctline, NULL, NULL, NULL);
CFRelease(ctline);
return retval;
}
@@ -341,6 +359,7 @@
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
if(fl_mac_os_version >= 0x1050) {
CTFontRef fontref = fl_fontsize->fontref;
+ // todo: computation for display via glyphs
CFStringRef str16 = CFStringCreateWithBytes(NULL, (const UInt8*)txt, n
*sizeof(UniChar), kCFStringEncodingUTF16, false);
CFAttributedStringRef astr = CFAttributedStringCreate(NULL, str16, NULL);
CFMutableAttributedStringRef mastr =
CFAttributedStringCreateMutableCopy(NULL, 0, astr);
@@ -421,15 +440,19 @@
#endif
+static int draw_as_glyphs(Fl_Font_Descriptor *font, UniChar *str16, int l,
float x, float y);
+
void fl_draw(const char *str, int n, float x, float y) {
// avoid a crash if no font has been selected by user yet !
check_default_font();
// convert to UTF-16 first
UniChar *uniStr = mac_Utf8_to_Utf16(str, n, &n);
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
- if(fl_mac_os_version >= 0x1050) {
+ if (fl_mac_os_version >= 0x1050) {
CFStringRef keys[2];
CFTypeRef values[2];
+ // attempt to draw fast the string
+ if (draw_as_glyphs(fl_fontsize, uniStr, n, x, y)) return;
CFStringRef str16 = CFStringCreateWithBytes(NULL, (const UInt8*)uniStr, n
* sizeof(UniChar), kCFStringEncodingUTF16, false);
CGColorRef color = flcolortocgcolor(fl_color());
keys[0] = kCTFontAttributeName;
@@ -489,6 +512,31 @@
draw(c, n, int(x - fl_width(c, n)), y);
}
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
+
+// draw fast a string if all its characters have unicode < 0x100
+static int draw_as_glyphs(Fl_Font_Descriptor *font, UniChar *unis, int l,
float x, float y)
+{
+ int i;
+ CGGlyph *glyphs = new CGGlyph[l];
+ for (i = 0; i < l; i++) {
+ if (unis[i] >= Fl_Font_Descriptor::glyph_count) {
+ delete glyphs;
+ return 0;
+ }
+ CTFontGetGlyphsForCharacters(font->fontref, unis + i, glyphs + i, 1);
+ }
+ CGContextSetTextMatrix(fl_gc, font_mx);
+ CGContextSetShouldAntialias(fl_gc, true);
+ CGContextSelectFont(fl_gc, font->q_name, CTFontGetSize(font->fontref),
kCGEncodingMacRoman);
+ CGContextShowGlyphsAtPoint(fl_gc, x, y, glyphs, l);
+ CGContextSetShouldAntialias(fl_gc, false);
+ delete glyphs;
+ return 1;
+}
+
+#endif
+
//
// End of "$Id$".
//
Index: src/Fl_Font.H
===================================================================
--- src/Fl_Font.H (revision 8287)
+++ src/Fl_Font.H (working copy)
@@ -63,6 +63,8 @@
ATSUTextLayout layout;
# if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
CTFontRef fontref;
+ static const int glyph_count = 0x100;
+ CGFloat glyph_advances[glyph_count];
# endif
ATSUStyle style;
short ascent, descent, q_width;
_______________________________________________
fltk-bugs mailing list
[email protected]
http://lists.easysw.com/mailman/listinfo/fltk-bugs
