C++ LLWString::c_str方法代码示例

void LLHUDNameTag::addLabel(const std::string& label_utf8)
{
	LLWString wstr = utf8string_to_wstring(label_utf8);
	if (!wstr.empty())
	{
		LLWString seps(utf8str_to_wstring("\r\n"));
		LLWString empty;

		typedef boost::tokenizer<boost::char_separator<llwchar>, LLWString::const_iterator, LLWString > tokenizer;
		boost::char_separator<llwchar> sep(seps.c_str(), empty.c_str(), boost::keep_empty_tokens);

		tokenizer tokens(wstr, sep);
		tokenizer::iterator iter = tokens.begin();

		while (iter != tokens.end())
		{
			U32 line_length = 0;
			do	
			{
				S32 segment_length = mFontp->maxDrawableChars(iter->substr(line_length).c_str(), 
					HUD_TEXT_MAX_WIDTH, wstr.length(), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
				LLHUDTextSegment segment(iter->substr(line_length, segment_length), LLFontGL::NORMAL, mColor, mFontp);
				mLabelSegments.push_back(segment);
				line_length += segment_length;
			}
			while (line_length != iter->size());
			++iter;
		}
	}
}

void LLConsole::addQueuedLines()
{
	for (line_queue_t::iterator iter = mLineQueue.begin();
		 iter != mLineQueue.end(); ++iter)
	{
		LineInfo& line_info = *iter;
		LLWString wline = line_info.wline;
		//F32 size = line_info.size;
		LLColor4 color = line_info.color;
		if (!wline.empty() && mFont != NULL)
		{
			// Wrap lines that are longer than the view is wide.
			S32 offset = 0;
			while( offset < (S32)wline.length() )
			{
				S32 skip_chars; // skip '\n'
				// Figure out if a word-wrapped line fits here.
				LLWString::size_type line_end = wline.find_first_of(llwchar('\n'), offset);
				if (line_end != LLWString::npos)
				{
					skip_chars = 1; // skip '\n'
				}
				else
				{
					line_end = wline.size();
					skip_chars = 0;
				}
				U32 drawable = mFont->maxDrawableChars(wline.c_str()+offset, (F32)mRect.getWidth(), line_end-offset, TRUE);
				if (drawable != 0)
				{
					LLFixedBuffer::addLine(wline.substr(offset, drawable));
					mAddTimes[mAddTimes.size()-1] = line_info.add_time;
				}
				else
				{
					// force a blank line
					LLFixedBuffer::addLine(" ");
				}
				mColors.push_back(color);
				offset += (drawable + skip_chars);
			}
		}
	}
	mLineQueue.clear();
}

// static
LLRect LLNotifyBox::getNotifyTipRect(const std::string &utf8message)
{
	LLWString message = utf8str_to_wstring(utf8message);
	S32 message_len = message.length();

	const S32 NOTIFY_WIDTH = gSavedSettings.getS32("NotifyBoxWidth");
	// Make room for the icon area.
	const S32 text_area_width = NOTIFY_WIDTH - HPAD * 4 - 32;

	const llwchar* wchars = message.c_str();
	const llwchar* start = wchars;
	const llwchar* end;
	S32 total_drawn = 0;
	bool done = false;
	S32 line_count;

	for (line_count = 2; !done; ++line_count)
	{
		for (end = start; *end != 0 && *end != '\n'; end++);

		if (*end == 0)
		{
			end = wchars + message_len;
			done = true;
		}
		
		for (S32 remaining = end - start; remaining;)
		{
			S32 drawn = sFont->maxDrawableChars(start, (F32)text_area_width, remaining, LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);

			if (0 == drawn)
			{
				drawn = 1;  // Draw at least one character, even if it doesn't all fit. (avoids an infinite loop)
			}

			total_drawn += drawn; 
			start += drawn;
			remaining -= drawn;

			if (total_drawn < message_len)
			{
				if (wchars[ total_drawn ] != '\n')
				{
					// wrap because line was too long
					line_count++;
				}
			}
			else
			{
				done = true;
			}
		}

		total_drawn++;	// for '\n'
		start = ++end;
	}

	const S32 MIN_NOTIFY_HEIGHT = 72;
	const S32 MAX_NOTIFY_HEIGHT = 600;
	S32 notify_height = llceil((F32) (line_count+1) * sFont->getLineHeight());
	if (gOverlayBar)
	{
		notify_height += gOverlayBar->getBoundingRect().mTop;
	}
	else
	{
		// *FIX: this is derived from the padding caused by the
		// rounded rects, shouldn't be a const here.
		notify_height += 10;  
	}
	notify_height += VPAD;
	notify_height = llclamp(notify_height, MIN_NOTIFY_HEIGHT, MAX_NOTIFY_HEIGHT);

	const S32 RIGHT = gNotifyBoxView->getRect().getWidth();
	const S32 LEFT = RIGHT - NOTIFY_WIDTH;

	// Make sure it goes slightly offscreen
	return LLRect(LEFT, notify_height-1, RIGHT, -1);
}

F32 LLFontGL::getWidthF32(const std::string& utf8text, const S32 begin_offset, const S32 max_chars ) const
{
	LLWString wtext = utf8str_to_wstring(utf8text);
	return getWidthF32(wtext.c_str(), begin_offset, max_chars);
}

S32 LLFontGL::render(const LLWString &wstr, 
					 const S32 begin_offset,
					 const F32 x, const F32 y,
					 const LLColor4 &color,
					 const HAlign halign, const VAlign valign,
					 U8 style,
					 const S32 max_chars, S32 max_pixels,
					 F32* right_x,
					 BOOL use_embedded,
					 BOOL use_ellipses) const
{
	if(!sDisplayFont) //do not display texts
	{
		return wstr.length() ;
	}

	if (wstr.empty())
	{
		return 0;
	} 

	gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);

	S32 scaled_max_pixels = max_pixels == S32_MAX ? S32_MAX : llceil((F32)max_pixels * sScaleX);

	// Strip off any style bits that are already accounted for by the font.
	style = style & (~getFontDesc().getStyle());

	F32 drop_shadow_strength = 0.f;
	if (style & (DROP_SHADOW | DROP_SHADOW_SOFT))
	{
		F32 luminance;
		color.calcHSL(NULL, NULL, &luminance);
		drop_shadow_strength = clamp_rescale(luminance, 0.35f, 0.6f, 0.f, 1.f);
		if (luminance < 0.35f)
		{
			style = style & ~(DROP_SHADOW | DROP_SHADOW_SOFT);
		}
	}

	gGL.pushMatrix();
	glLoadIdentity();
	gGL.translatef(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);

	LLFastTimer t(LLFastTimer::FTM_RENDER_FONTS);

	gGL.color4fv( color.mV );

	S32 chars_drawn = 0;
	S32 i;
	S32 length;

	if (-1 == max_chars)
	{
		length = (S32)wstr.length() - begin_offset;
	}
	else
	{
		length = llmin((S32)wstr.length() - begin_offset, max_chars );
	}

	F32 cur_x, cur_y, cur_render_x, cur_render_y;

 	// Not guaranteed to be set correctly
	gGL.setSceneBlendType(LLRender::BT_ALPHA);
	
	cur_x = ((F32)x * sScaleX);
	cur_y = ((F32)y * sScaleY);

	// Offset y by vertical alignment.
	switch (valign)
	{
	case TOP:
		cur_y -= mAscender;
		break;
	case BOTTOM:
		cur_y += mDescender;
		break;
	case VCENTER:
		cur_y -= ((mAscender - mDescender)/2.f);
		break;
	case BASELINE:
		// Baseline, do nothing.
		break;
	default:
		break;
	}

	switch (halign)
	{
	case LEFT:
		break;
	case RIGHT:
	  	cur_x -= llmin(scaled_max_pixels, llround(getWidthF32(wstr.c_str(), 0, length) * sScaleX));
		break;
//.........这里部分代码省略.........

// Walk through a string, applying the rules specified by the keyword token list and
// create a list of color segments.
void LLKeywords::findSegments(std::vector<LLTextSegment *>* seg_list, const LLWString& wtext, const LLColor4 &defaultColor)
{
	std::for_each(seg_list->begin(), seg_list->end(), DeletePointer());
	seg_list->clear();

	if( wtext.empty() )
	{
		return;
	}
	
	S32 text_len = wtext.size();

	seg_list->push_back( new LLTextSegment( LLColor3(defaultColor), 0, text_len ) ); 

	const llwchar* base = wtext.c_str();
	const llwchar* cur = base;
	const llwchar* line = NULL;

	while( *cur )
	{
		if( *cur == '\n' || cur == base )
		{
			if( *cur == '\n' )
			{
				cur++;
				if( !*cur || *cur == '\n' )
				{
					continue;
				}
			}

			// Start of a new line
			line = cur;

			// Skip white space
			while( *cur && isspace(*cur) && (*cur != '\n')  )
			{
				cur++;
			}
			if( !*cur || *cur == '\n' )
			{
				continue;
			}

			// cur is now at the first non-whitespace character of a new line	
		
			// Line start tokens
			{
				BOOL line_done = FALSE;
				for (token_list_t::iterator iter = mLineTokenList.begin();
					 iter != mLineTokenList.end(); ++iter)
				{
					LLKeywordToken* cur_token = *iter;
					if( cur_token->isHead( cur ) )
					{
						S32 seg_start = cur - base;
						while( *cur && *cur != '\n' )
						{
							// skip the rest of the line
							cur++;
						}
						S32 seg_end = cur - base;
						
						LLTextSegment* text_segment = new LLTextSegment( cur_token->getColor(), seg_start, seg_end );
						text_segment->setToken( cur_token );
						insertSegment( seg_list, text_segment, text_len, defaultColor);
						line_done = TRUE; // to break out of second loop.
						break;
					}
				}

				if( line_done )
				{
					continue;
				}
			}
		}

		// Skip white space
		while( *cur && isspace(*cur) && (*cur != '\n')  )
		{
			cur++;
		}

		while( *cur && *cur != '\n' )
		{
			// Check against delimiters
			{
				S32 seg_start = 0;
				LLKeywordToken* cur_delimiter = NULL;
				for (token_list_t::iterator iter = mDelimiterTokenList.begin();
					 iter != mDelimiterTokenList.end(); ++iter)
				{
					LLKeywordToken* delimiter = *iter;
					if( delimiter->isHead( cur ) )
					{
						cur_delimiter = delimiter;
						break;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
			center_x++;
		}

		// fade out overlay images on disabled buttons
		LLColor4 overlay_color = mImageOverlayColor;
		if (!getEnabled())
		{
			overlay_color.mV[VALPHA] = 0.5f;
		}

		switch(mImageOverlayAlignment)
		{
		case LLFontGL::LEFT:
			text_left += overlay_width + 1;
			text_width -= overlay_width + 1;
			text_middle += (overlay_width+1)/4;
			mImageOverlay->draw(
				mLeftHPad, 
				center_y - (overlay_height / 2), 
				overlay_width, 
				overlay_height, 
				overlay_color);
			break;
		case LLFontGL::HCENTER:
			mImageOverlay->draw(
				center_x - (overlay_width / 2), 
				center_y - (overlay_height / 2), 
				overlay_width, 
				overlay_height, 
				overlay_color);
			break;
		case LLFontGL::RIGHT:
			text_right -= overlay_width + 1;				
			text_width -= overlay_width + 1;
			text_middle += (overlay_width+1)/4;
			mImageOverlay->draw(
				getRect().getWidth() - mRightHPad - overlay_width, 
				center_y - (overlay_height / 2), 
				overlay_width, 
				overlay_height, 
				overlay_color);
			break;
		default:
			// draw nothing
			break;
		}
	}

	// Draw label
	if( !label.empty() )
	{
		LLWStringUtil::trim(label);

		S32 x;
		switch( mHAlign )
		{
		case LLFontGL::RIGHT:
			x = text_right;
			break;
		case LLFontGL::HCENTER:
			{
				S32 actual_width = mGLFont->getWidth(label.c_str());
				x = llmax(text_middle, text_left + actual_width/2);
			}
			break;
		case LLFontGL::LEFT:
		default:
			x = text_left;
			break;
		}

		S32 y_offset = 2 + (getRect().getHeight() - 20)/2;
	
		if (pressed)
		{
			y_offset--;
			x++;
		}


		mGLFont->render(label, 0, 
			(F32)x, 
			(F32)(LLBUTTON_V_PAD + y_offset), 
			label_color,
			mHAlign, LLFontGL::BOTTOM,
			LLFontGL::NORMAL,
			mDropShadowedText ? LLFontGL::DROP_SHADOW_SOFT : LLFontGL::NO_SHADOW,
			U32_MAX, text_width,
			NULL, FALSE, FALSE);
	}

	if (sDebugRects	
		|| (LLView::sEditingUI && this == LLView::sEditingUIView))
	{
		drawDebugRect();
	}

	// reset hover status for next frame
	mNeedsHighlight = FALSE;
}

S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, const LLColor4 &color, HAlign halign, VAlign valign, U8 style, 
					 ShadowType shadow, S32 max_chars, S32 max_pixels, F32* right_x, BOOL use_embedded, BOOL use_ellipses) const
{
	LLFastTimer _(FTM_RENDER_FONTS);

	if(!sDisplayFont) //do not display texts
	{
		return wstr.length() ;
	}

	if (wstr.empty() || !max_pixels)
	{
		return 0;
	} 

	if (max_chars == -1)
		max_chars = S32_MAX;

	const S32 max_index = llmin(llmax(max_chars, begin_offset + max_chars), S32(wstr.length()));
	if (max_index <= 0 || begin_offset >= max_index || max_pixels <= 0)
		return 0;

	gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);

	S32 scaled_max_pixels = max_pixels == S32_MAX ? S32_MAX : llceil((F32)max_pixels * sScaleX);

	// Strip off any style bits that are already accounted for by the font.
	style = style & (~getFontDesc().getStyle());

	F32 drop_shadow_strength = 0.f;
	if (shadow != NO_SHADOW)
	{
		F32 luminance;
		color.calcHSL(NULL, NULL, &luminance);
		drop_shadow_strength = clamp_rescale(luminance, 0.35f, 0.6f, 0.f, 1.f);
		if (luminance < 0.35f)
		{
			shadow = NO_SHADOW;
		}
	}

	gGL.pushUIMatrix();

	gGL.loadUIIdentity();
	
	LLVector2 origin(floorf(sCurOrigin.mX*sScaleX), floorf(sCurOrigin.mY*sScaleY));

	// Depth translation, so that floating text appears 'in-world'
	// and is correctly occluded.
	gGL.translatef(0.f,0.f,sCurDepth);

	S32 chars_drawn = 0;
	S32 i;
	S32 length = max_index - begin_offset;

	F32 cur_x, cur_y, cur_render_x, cur_render_y;

 	// Not guaranteed to be set correctly
	gGL.setSceneBlendType(LLRender::BT_ALPHA);
	
	cur_x = ((F32)x * sScaleX) + origin.mV[VX];
	cur_y = ((F32)y * sScaleY) + origin.mV[VY];

	// Offset y by vertical alignment.
	// use unscaled font metrics here
	switch (valign)
	{
	case TOP:
		cur_y -= llceil(mFontFreetype->getAscenderHeight());
		break;
	case BOTTOM:
		cur_y += llceil(mFontFreetype->getDescenderHeight());
		break;
	case VCENTER:
		cur_y -= llceil((llceil(mFontFreetype->getAscenderHeight()) - llceil(mFontFreetype->getDescenderHeight())) / 2.f);
		break;
	case BASELINE:
		// Baseline, do nothing.
		break;
	default:
		break;
	}

	switch (halign)
	{
	case LEFT:
		break;
	case RIGHT:
	  	cur_x -= llmin(scaled_max_pixels, ll_round(getWidthF32(wstr.c_str(), begin_offset, length) * sScaleX));
		break;
	case HCENTER:
	    cur_x -= llmin(scaled_max_pixels, ll_round(getWidthF32(wstr.c_str(), begin_offset, length) * sScaleX)) / 2;
		break;
	default:
		break;
	}

	cur_render_y = cur_y;
	cur_render_x = cur_x;

//.........这里部分代码省略.........

S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, const LLColor4 &color, HAlign halign, VAlign valign, U8 style, 
					 ShadowType shadow, S32 max_chars, S32 max_pixels, F32* right_x, BOOL use_ellipses) const
{
	LLFastTimer _(FTM_RENDER_FONTS);

	if(!sDisplayFont) //do not display texts
	{
		return wstr.length() ;
	}

	if (wstr.empty())
	{
		return 0;
	} 

	gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);

	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 stripping off the
	// style bits that are drawn by the underlying Freetype font
	U8 style_to_add = (style | mFontDescriptor.getStyle()) & ~mFontFreetype->getStyle();

	F32 drop_shadow_strength = 0.f;
	if (shadow != NO_SHADOW)
	{
		F32 luminance;
		color.calcHSL(NULL, NULL, &luminance);
		drop_shadow_strength = clamp_rescale(luminance, 0.35f, 0.6f, 0.f, 1.f);
		if (luminance < 0.35f)
		{
			shadow = NO_SHADOW;
		}
	}

	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.translateUI(-pixel_offset_x, -pixel_offset_y, 0.f);

	LLVector2 origin(floorf(sCurOrigin.mX*sScaleX), floorf(sCurOrigin.mY*sScaleY));
	// snap the text origin to a pixel grid to start with
	origin.mV[VX] -= llround((F32)sCurOrigin.mX) - (sCurOrigin.mX);
	origin.mV[VY] -= llround((F32)sCurOrigin.mY) - (sCurOrigin.mY);


	S32 chars_drawn = 0;
	S32 i;
	S32 length;

	if (-1 == max_chars)
	{
		length = (S32)wstr.length() - begin_offset;
	}
	else
	{
		length = llmin((S32)wstr.length() - begin_offset, max_chars );
	}

	F32 cur_x, cur_y, cur_render_x, cur_render_y;

 	// Not guaranteed to be set correctly
	gGL.setSceneBlendType(LLRender::BT_ALPHA);
	
	cur_x = ((F32)x * sScaleX) + origin.mV[VX];
	cur_y = ((F32)y * sScaleY) + origin.mV[VY];

	// Offset y by vertical alignment.
	switch (valign)
	{
	case TOP:
		cur_y -= mFontFreetype->getAscenderHeight();
		break;
	case BOTTOM:
		cur_y += mFontFreetype->getDescenderHeight();
		break;
	case VCENTER:
		cur_y -= (mFontFreetype->getAscenderHeight() - mFontFreetype->getDescenderHeight()) / 2.f;
		break;
	case BASELINE:
		// Baseline, do nothing.
		break;
	default:
		break;
	}

	switch (halign)
	{
	case LEFT:
		break;
	case RIGHT:
	  	cur_x -= llmin(scaled_max_pixels, llround(getWidthF32(wstr.c_str(), begin_offset, length) * sScaleX));
		break;
	case HCENTER:
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	
	mImageGLp->bind(0);
	
 	// Not guaranteed to be set correctly
	gGL.setSceneBlendType(LLRender::BT_ALPHA);
	
	cur_x = ((F32)x * sScaleX);
	cur_y = ((F32)y * sScaleY);

	// Offset y by vertical alignment.
	switch (valign)
	{
	case TOP:
		cur_y -= mAscender;
		break;
	case BOTTOM:
		cur_y += mDescender;
		break;
	case VCENTER:
		cur_y -= ((mAscender - mDescender)/2.f);
		break;
	case BASELINE:
		// Baseline, do nothing.
		break;
	default:
		break;
	}

	switch (halign)
	{
	case LEFT:
		break;
	case RIGHT:
	  	cur_x -= llmin(scaled_max_pixels, llround(getWidthF32(wstr.c_str(), 0, length) * sScaleX));
		break;
	case HCENTER:
	    cur_x -= llmin(scaled_max_pixels, llround(getWidthF32(wstr.c_str(), 0, length) * sScaleX)) / 2;
		break;
	default:
		break;
	}

	// Round properly.
	//cur_render_y = (F32)llfloor(cur_y/sScaleY + 0.5f)*sScaleY;
	//cur_render_x = (F32)llfloor(cur_x/sScaleX + 0.5f)*sScaleX;
	
	cur_render_y = cur_y;
	cur_render_x = cur_x;

	F32 start_x = cur_x;

	F32 inv_width = 1.f / mImageGLp->getWidth();
	F32 inv_height = 1.f / mImageGLp->getHeight();

	const S32 LAST_CHARACTER = LLFont::LAST_CHAR_FULL;


	BOOL draw_ellipses = FALSE;
	if (use_ellipses && halign == LEFT)
	{
		// check for too long of a string
		if (getWidthF32(wstr.c_str(), 0, max_chars) * sScaleX > scaled_max_pixels)
		{
			// use four dots for ellipsis width to generate padding
			const LLWString dots(utf8str_to_wstring(std::string("....")));
			scaled_max_pixels = llmax(0, scaled_max_pixels - llround(getWidthF32(dots.c_str())));