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Diffstat (limited to 'indra/llrender/llfontgl.cpp')
-rw-r--r--indra/llrender/llfontgl.cpp202
1 files changed, 154 insertions, 48 deletions
diff --git a/indra/llrender/llfontgl.cpp b/indra/llrender/llfontgl.cpp
index c9163d2890..82db922368 100644
--- a/indra/llrender/llfontgl.cpp
+++ b/indra/llrender/llfontgl.cpp
@@ -135,7 +135,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
S32 scaled_max_pixels = max_pixels == S32_MAX ? S32_MAX : llceil((F32)max_pixels * sScaleX);
- // determine which style flags need to be added programmatically by striping off the
+ // determine which style flags need to be added programmatically by stripping off the
// style bits that are drawn by the underlying Freetype font
U8 style_to_add = (style | mFontDescriptor.getStyle()) & ~mFontFreetype->getStyle();
@@ -151,14 +151,16 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
}
}
- gGL.pushMatrix();
- glLoadIdentity();
- gGL.translatef(floorf(sCurOrigin.mX*sScaleX), floorf(sCurOrigin.mY*sScaleY), sCurOrigin.mZ);
+ gGL.pushUIMatrix();
+
+ gGL.loadUIIdentity();
+
+ gGL.translateUI(floorf(sCurOrigin.mX*sScaleX), floorf(sCurOrigin.mY*sScaleY), sCurOrigin.mZ);
// this code snaps the text origin to a pixel grid to start with
F32 pixel_offset_x = llround((F32)sCurOrigin.mX) - (sCurOrigin.mX);
F32 pixel_offset_y = llround((F32)sCurOrigin.mY) - (sCurOrigin.mY);
- gGL.translatef(-pixel_offset_x, -pixel_offset_y, 0.f);
+ gGL.translateUI(-pixel_offset_x, -pixel_offset_y, 0.f);
LLFastTimer t(FTM_RENDER_FONTS);
@@ -195,7 +197,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
cur_y += mFontFreetype->getDescenderHeight();
break;
case VCENTER:
- cur_y -= ((mFontFreetype->getAscenderHeight() - mFontFreetype->getDescenderHeight())/2.f);
+ cur_y -= (mFontFreetype->getAscenderHeight() - mFontFreetype->getDescenderHeight()) / 2.f;
break;
case BASELINE:
// Baseline, do nothing.
@@ -221,7 +223,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
cur_render_y = cur_y;
cur_render_x = cur_x;
- F32 start_x = cur_x;
+ F32 start_x = llround(cur_x);
const LLFontBitmapCache* font_bitmap_cache = mFontFreetype->getFontBitmapCache();
@@ -235,7 +237,8 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
if (use_ellipses)
{
// check for too long of a string
- if (getWidthF32(wstr.c_str(), begin_offset, max_chars) * sScaleX > scaled_max_pixels)
+ S32 string_width = llround(getWidthF32(wstr.c_str(), begin_offset, max_chars) * sScaleX);
+ if (string_width > scaled_max_pixels)
{
// use four dots for ellipsis width to generate padding
const LLWString dots(utf8str_to_wstring(std::string("....")));
@@ -244,15 +247,18 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
}
}
-
- // Remember last-used texture to avoid unnecesssary bind calls.
- LLImageGL *last_bound_texture = NULL;
+ const LLFontGlyphInfo* next_glyph = NULL;
for (i = begin_offset; i < begin_offset + length; i++)
{
llwchar wch = wstr[i];
- const LLFontGlyphInfo* fgi= mFontFreetype->getGlyphInfo(wch);
+ const LLFontGlyphInfo* fgi = next_glyph;
+ next_glyph = NULL;
+ if(!fgi)
+ {
+ fgi = mFontFreetype->getGlyphInfo(wch);
+ }
if (!fgi)
{
llerrs << "Missing Glyph Info" << llendl;
@@ -260,12 +266,8 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
}
// Per-glyph bitmap texture.
LLImageGL *image_gl = mFontFreetype->getFontBitmapCache()->getImageGL(fgi->mBitmapNum);
- if (last_bound_texture != image_gl)
- {
- gGL.getTexUnit(0)->bind(image_gl);
- last_bound_texture = image_gl;
- }
-
+ gGL.getTexUnit(0)->bind(image_gl);
+
if ((start_x + scaled_max_pixels) < (cur_x + fgi->mXBearing + fgi->mWidth))
{
// Not enough room for this character.
@@ -294,15 +296,16 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
if (next_char && (next_char < LAST_CHARACTER))
{
// Kern this puppy.
- cur_x += mFontFreetype->getXKerning(wch, next_char);
+ next_glyph = mFontFreetype->getGlyphInfo(next_char);
+ cur_x += mFontFreetype->getXKerning(fgi, next_glyph);
}
// Round after kerning.
// Must do this to cur_x, not just to cur_render_x, otherwise you
// will squish sub-pixel kerned characters too close together.
// For example, "CCCCC" looks bad.
- cur_x = (F32)llfloor(cur_x + 0.5f);
- //cur_y = (F32)llfloor(cur_y + 0.5f);
+ cur_x = (F32)llround(cur_x);
+ //cur_y = (F32)llround(cur_y);
cur_render_x = cur_x;
cur_render_y = cur_y;
@@ -329,10 +332,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
// recursively render ellipses at end of string
// we've already reserved enough room
- gGL.pushMatrix();
- //glLoadIdentity();
- //gGL.translatef(sCurOrigin.mX, sCurOrigin.mY, 0.0f);
- //glScalef(sScaleX, sScaleY, 1.f);
+ gGL.pushUIMatrix();
renderUTF8(std::string("..."),
0,
cur_x / sScaleX, (F32)y,
@@ -343,10 +343,10 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
S32_MAX, max_pixels,
right_x,
FALSE);
- gGL.popMatrix();
+ gGL.popUIMatrix();
}
- gGL.popMatrix();
+ gGL.popUIMatrix();
return chars_drawn;
}
@@ -434,19 +434,28 @@ F32 LLFontGL::getWidthF32(const llwchar* wchars, S32 begin_offset, S32 max_chars
F32 cur_x = 0;
const S32 max_index = begin_offset + max_chars;
+ const LLFontGlyphInfo* next_glyph = NULL;
+
F32 width_padding = 0.f;
for (S32 i = begin_offset; i < max_index && wchars[i] != 0; i++)
{
llwchar wch = wchars[i];
- const LLFontGlyphInfo* fgi= mFontFreetype->getGlyphInfo(wch);
+ const LLFontGlyphInfo* fgi = next_glyph;
+ next_glyph = NULL;
+ if(!fgi)
+ {
+ fgi = mFontFreetype->getGlyphInfo(wch);
+ }
- F32 advance = mFontFreetype->getXAdvance(wch);
+ F32 advance = mFontFreetype->getXAdvance(fgi);
// for the last character we want to measure the greater of its width and xadvance values
// so keep track of the difference between these values for the each character we measure
// so we can fix things up at the end
- width_padding = llmax(0.f, (F32)fgi->mWidth - advance);
+ width_padding = llmax( 0.f, // always use positive padding amount
+ width_padding - advance, // previous padding left over after advance of current character
+ (F32)(fgi->mWidth + fgi->mXBearing) - advance); // difference between width of this character and advance to next character
cur_x += advance;
llwchar next_char = wchars[i+1];
@@ -456,10 +465,11 @@ F32 LLFontGL::getWidthF32(const llwchar* wchars, S32 begin_offset, S32 max_chars
&& (next_char < LAST_CHARACTER))
{
// Kern this puppy.
- cur_x += mFontFreetype->getXKerning(wch, next_char);
+ next_glyph = mFontFreetype->getGlyphInfo(next_char);
+ cur_x += mFontFreetype->getXKerning(fgi, next_glyph);
}
// Round after kerning.
- cur_x = (F32)llfloor(cur_x + 0.5f);
+ cur_x = (F32)llround(cur_x);
}
// add in extra pixels for last character's width past its xadvance
@@ -469,7 +479,7 @@ F32 LLFontGL::getWidthF32(const llwchar* wchars, S32 begin_offset, S32 max_chars
}
// Returns the max number of complete characters from text (up to max_chars) that can be drawn in max_pixels
-S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_chars, BOOL end_on_word_boundary) const
+S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_chars, EWordWrapStyle end_on_word_boundary) const
{
if (!wchars || !wchars[0] || max_chars == 0)
{
@@ -488,6 +498,9 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
// avoid S32 overflow when max_pixels == S32_MAX by staying in floating point
F32 scaled_max_pixels = ceil(max_pixels * sScaleX);
+ F32 width_padding = 0.f;
+
+ LLFontGlyphInfo* next_glyph = NULL;
S32 i;
for (i=0; (i < max_chars); i++)
@@ -530,10 +543,23 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
in_word = TRUE;
}
}
+
+ LLFontGlyphInfo* fgi = next_glyph;
+ next_glyph = NULL;
+ if(!fgi)
+ {
+ fgi = mFontFreetype->getGlyphInfo(wch);
+ }
+
+ // account for glyphs that run beyond the starting point for the next glyphs
+ width_padding = llmax( 0.f, // always use positive padding amount
+ width_padding - fgi->mXAdvance, // previous padding left over after advance of current character
+ (F32)(fgi->mWidth + fgi->mXBearing) - fgi->mXAdvance); // difference between width of this character and advance to next character
- cur_x += mFontFreetype->getXAdvance(wch);
+ cur_x += fgi->mXAdvance;
- if (scaled_max_pixels < cur_x)
+ // clip if current character runs past scaled_max_pixels (using width_padding)
+ if (scaled_max_pixels < cur_x + width_padding)
{
clip = TRUE;
break;
@@ -542,17 +568,33 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
if (((i+1) < max_chars) && wchars[i+1])
{
// Kern this puppy.
- cur_x += mFontFreetype->getXKerning(wch, wchars[i+1]);
+ next_glyph = mFontFreetype->getGlyphInfo(wchars[i+1]);
+ cur_x += mFontFreetype->getXKerning(fgi, next_glyph);
}
// Round after kerning.
- cur_x = (F32)llfloor(cur_x + 0.5f);
+ cur_x = llround(cur_x);
drawn_x = cur_x;
}
- if( clip && end_on_word_boundary && (start_of_last_word != 0) )
+ if( clip )
{
- i = start_of_last_word;
+ switch (end_on_word_boundary)
+ {
+ case ONLY_WORD_BOUNDARIES:
+ i = start_of_last_word;
+ break;
+ case WORD_BOUNDARY_IF_POSSIBLE:
+ if (start_of_last_word != 0)
+ {
+ i = start_of_last_word;
+ }
+ break;
+ default:
+ case ANYWHERE:
+ // do nothing
+ break;
+ }
}
return i;
}
@@ -574,14 +616,20 @@ S32 LLFontGL::firstDrawableChar(const llwchar* wchars, F32 max_pixels, S32 text_
{
llwchar wch = wchars[i];
- F32 char_width = mFontFreetype->getXAdvance(wch);
+ const LLFontGlyphInfo* fgi= mFontFreetype->getGlyphInfo(wch);
+
+ // last character uses character width, since the whole character needs to be visible
+ // other characters just use advance
+ F32 width = (i == start)
+ ? (F32)(fgi->mWidth + fgi->mXBearing) // use actual width for last character
+ : fgi->mXAdvance; // use advance for all other characters
- if( scaled_max_pixels < (total_width + char_width) )
+ if( scaled_max_pixels < (total_width + width) )
{
break;
}
- total_width += char_width;
+ total_width += width;
drawable_chars++;
if( max_chars >= 0 && drawable_chars >= max_chars )
@@ -599,7 +647,17 @@ S32 LLFontGL::firstDrawableChar(const llwchar* wchars, F32 max_pixels, S32 text_
total_width = llround(total_width);
}
- return start_pos - drawable_chars;
+ if (drawable_chars == 0)
+ {
+ return start_pos; // just draw last character
+ }
+ else
+ {
+ // if only 1 character is drawable, we want to return start_pos as the first character to draw
+ // if 2 are drawable, return start_pos and character before start_pos, etc.
+ return start_pos + 1 - drawable_chars;
+ }
+
}
S32 LLFontGL::charFromPixelOffset(const llwchar* wchars, S32 begin_offset, F32 target_x, F32 max_pixels, S32 max_chars, BOOL round) const
@@ -614,9 +672,11 @@ S32 LLFontGL::charFromPixelOffset(const llwchar* wchars, S32 begin_offset, F32 t
target_x *= sScaleX;
// max_chars is S32_MAX by default, so make sure we don't get overflow
- const S32 max_index = begin_offset + llmin(S32_MAX - begin_offset, max_chars);
+ const S32 max_index = begin_offset + llmin(S32_MAX - begin_offset, max_chars - 1);
F32 scaled_max_pixels = max_pixels * sScaleX;
+
+ const LLFontGlyphInfo* next_glyph = NULL;
S32 pos;
for (pos = begin_offset; pos < max_index; pos++)
@@ -626,7 +686,15 @@ S32 LLFontGL::charFromPixelOffset(const llwchar* wchars, S32 begin_offset, F32 t
{
break; // done
}
- F32 char_width = mFontFreetype->getXAdvance(wch);
+
+ const LLFontGlyphInfo* glyph = next_glyph;
+ next_glyph = NULL;
+ if(!glyph)
+ {
+ glyph = mFontFreetype->getGlyphInfo(wch);
+ }
+
+ F32 char_width = mFontFreetype->getXAdvance(glyph);
if (round)
{
@@ -652,13 +720,14 @@ S32 LLFontGL::charFromPixelOffset(const llwchar* wchars, S32 begin_offset, F32 t
if (((pos + 1) < max_index)
&& (wchars[(pos + 1)]))
{
- llwchar next_char = wchars[pos + 1];
// Kern this puppy.
- cur_x += mFontFreetype->getXKerning(wch, next_char);
+ next_glyph = mFontFreetype->getGlyphInfo(wchars[pos + 1]);
+ cur_x += mFontFreetype->getXKerning(glyph, next_glyph);
}
+
// Round after kerning.
- cur_x = (F32)llfloor(cur_x + 0.5f);
+ cur_x = llround(cur_x);
}
return llmin(max_chars, pos - begin_offset);
@@ -749,11 +818,41 @@ U8 LLFontGL::getStyleFromString(const std::string &style)
}
// static
+std::string LLFontGL::getStringFromStyle(U8 style)
+{
+ std::string style_string;
+ if (style & NORMAL)
+ {
+ style_string += "|NORMAL";
+ }
+ if (style & BOLD)
+ {
+ style_string += "|BOLD";
+ }
+ if (style & ITALIC)
+ {
+ style_string += "|ITALIC";
+ }
+ if (style & UNDERLINE)
+ {
+ style_string += "|UNDERLINE";
+ }
+ return style_string;
+}
+
+// static
std::string LLFontGL::nameFromFont(const LLFontGL* fontp)
{
return fontp->mFontDescriptor.getName();
}
+
+// static
+std::string LLFontGL::sizeFromFont(const LLFontGL* fontp)
+{
+ return fontp->mFontDescriptor.getSize();
+}
+
// static
std::string LLFontGL::nameFromHAlign(LLFontGL::HAlign align)
{
@@ -893,6 +992,13 @@ LLFontGL* LLFontGL::getFontByName(const std::string& name)
}
}
+//static
+LLFontGL* LLFontGL::getFontDefault()
+{
+ return getFontSansSerif(); // Fallback to sans serif as default font
+}
+
+
// static
std::string LLFontGL::getFontPathSystem()
{
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-31 13:14:39 +0000