C++ vecText::size方法代码示例

void CGUITextLayout::AppendToUTF32(const CStdStringW &utf16, character_t colStyle, vecText &utf32)
{
  // NOTE: Assumes a single line of text
  utf32.reserve(utf32.size() + utf16.size());
  for (unsigned int i = 0; i < utf16.size(); i++)
    utf32.push_back(utf16[i] | colStyle);
}

void CGUIFont::DrawScrollingText(float x, float y, const vecColors &colors, color_t shadowColor,
                const vecText &text, uint32_t alignment, float maxWidth, const CScrollInfo &scrollInfo)
{
  if (!m_font) return;
  if (!shadowColor) shadowColor = m_shadowColor;

  if (!text.size() || ClippedRegionIsEmpty(x, y, maxWidth, alignment))
    return; // nothing to render

  if (!scrollInfo.m_widthValid)
  {
    /* Calculate the pixel width of the complete string */
    scrollInfo.m_textWidth = GetTextWidth(text);
    scrollInfo.m_totalWidth = scrollInfo.m_textWidth + GetTextWidth(scrollInfo.suffix);
    scrollInfo.m_widthValid = true;
  }

  assert(scrollInfo.m_totalWidth != 0);

  float textPixelWidth = ROUND(scrollInfo.m_textWidth / g_graphicsContext.GetGUIScaleX());
  float suffixPixelWidth = ROUND((scrollInfo.m_totalWidth - scrollInfo.m_textWidth) / g_graphicsContext.GetGUIScaleX());

  float offset;
  if(scrollInfo.pixelSpeed >= 0)
    offset = scrollInfo.pixelPos;
  else
    offset = scrollInfo.m_totalWidth - scrollInfo.pixelPos;

  vecColors renderColors;
  for (unsigned int i = 0; i < colors.size(); i++)
    renderColors.push_back(g_graphicsContext.MergeAlpha(colors[i] ? colors[i] : m_textColor));

  bool scroll =  !scrollInfo.waitTime && scrollInfo.pixelSpeed;
  if (shadowColor)
  {
    shadowColor = g_graphicsContext.MergeAlpha(shadowColor);
    vecColors shadowColors;
    for (unsigned int i = 0; i < renderColors.size(); i++)
      shadowColors.push_back((renderColors[i] & 0xff000000) != 0 ? shadowColor : 0);
    for (float dx = -offset; dx < maxWidth; dx += scrollInfo.m_totalWidth)
    {
      m_font->DrawTextInternal(x + dx + 1, y + 1, shadowColors, text, alignment, textPixelWidth, scroll);
      m_font->DrawTextInternal(x + dx + scrollInfo.m_textWidth + 1, y + 1, shadowColors, scrollInfo.suffix, alignment, suffixPixelWidth, scroll);
    }
  }
  for (float dx = -offset; dx < maxWidth; dx += scrollInfo.m_totalWidth)
  {
    m_font->DrawTextInternal(x + dx, y, renderColors, text, alignment, textPixelWidth, scroll);
    m_font->DrawTextInternal(x + dx + scrollInfo.m_textWidth, y, renderColors, scrollInfo.suffix, alignment, suffixPixelWidth, scroll);
  }

  g_graphicsContext.RestoreClipRegion();
}

void CGUIFontTTFBase::BuildTextCoordinates(float x, float y, const vecColors &colors, color_t shadowColor,
        const vecText &text, uint32_t alignment, float maxPixelWidth, bool scrolling, FontCoordsIndiced& pData)
{
    // Check if we will really need to truncate or justify the text
    m_originX = x;
    m_originY = y;

    if ( alignment & XBFONT_TRUNCATED )
    {
        if ( maxPixelWidth <= 0.0f || GetTextWidthInternal(text.begin(), text.end()) <= maxPixelWidth)
            alignment &= ~XBFONT_TRUNCATED;
    }
    else if ( alignment & XBFONT_JUSTIFIED )
    {
        if ( maxPixelWidth <= 0.0f )
            alignment &= ~XBFONT_JUSTIFIED;
    }

    // calculate sizing information
    float startX = 0;
    float startY = (alignment & XBFONT_CENTER_Y) ? -0.5f*(m_cellHeight-2) : 0;  // vertical centering

    if ( alignment & (XBFONT_RIGHT | XBFONT_CENTER_X) )
    {
        // Get the extent of this line
        float w = GetTextWidthInternal( text.begin(), text.end() );

        if ( alignment & XBFONT_TRUNCATED && w > maxPixelWidth )
            w = maxPixelWidth;

        if ( alignment & XBFONT_CENTER_X)
            w *= 0.5f;
        // Offset this line's starting position
        startX -= w;
    }

    float spacePerLetter = 0; // for justification effects
#if 0
    if ( alignment & XBFONT_JUSTIFIED )
    {
        // first compute the size of the text to render in both characters and pixels
        unsigned int lineChars = 0;
        float linePixels = 0;
        for (vecText::const_iterator pos = text.begin(); pos != text.end(); pos++)
        {
            Character *ch = GetCharacter(*pos);
            if (ch)
            {   // spaces have multiple times the justification spacing of normal letters
                lineChars += ((*pos & 0xffff) == L' ') ? justification_word_weight : 1;
                linePixels += ch->advance;
            }
        }
        if (lineChars > 1)
            spacePerLetter = (maxPixelWidth - linePixels) / (lineChars - 1);
    }
#endif

    ReloadFace();

#ifdef HAS_HARFBUZZ_NG
    int i = 0;
    wchar_t strW[text.size()];
    for (vecText::const_iterator pos = text.begin(); pos != text.end(); pos++)
    {
        wchar_t letter = (wchar_t)((*pos) & 0xffff);
        strW[i] = letter;
        i++;
    }

    hb_buffer_t *hb_buffer = hb_buffer_create(text.size());
    hb_buffer_set_unicode_funcs(hb_buffer, hb_glib_get_unicode_funcs());
    hb_buffer_add_utf32(hb_buffer, (const uint32_t*) strW, text.size(), 0, text.size());
    hb_buffer_set_direction(hb_buffer, HB_DIRECTION_LTR);

    hb_shape (hb_font, hb_buffer, NULL, 0);
    unsigned int glyph_info_len;
    hb_glyph_info_t *hb_glyph = hb_buffer_get_glyph_infos (hb_buffer, &glyph_info_len);
    hb_glyph_position_t *hb_position = hb_buffer_get_glyph_positions (hb_buffer, &glyph_info_len);

#else /* HAS_HARFBUZZ_NG */
    FT_Vector delta;
    Character* previousCh = NULL;
#endif

    float cursorX = 0; // current position along the line

    for (vecText::const_iterator pos = text.begin(); pos != text.end(); pos++)
    {
        // If starting text on a new line, determine justification effects
        // Get the current letter in the CStdString
        color_t color = (*pos & 0xff0000) >> 16;
        if (color >= colors.size())
            color = 0;
        color = colors[color];

        // grab the next character
        Character *ch = GetCharacter(*pos);
        if (!ch) continue;

        if ( alignment & XBFONT_TRUNCATED )
//.........这里部分代码省略.........