- node = node->GetNext();
- p = (wxPoint *)node->GetData();
-
- x2 = p->x;
- y2 = p->y;
- cx1 = (double)((x1 + x2) / 2);
- cy1 = (double)((y1 + y2) / 2);
- cx2 = (double)((cx1 + x2) / 2);
- cy2 = (double)((cy1 + y2) / 2);
-
- wx_spline_add_point(x1, y1);
-
- while ((node = node->GetNext())
-#if !wxUSE_STL
- != NULL
-#endif // !wxUSE_STL
- )
- {
- p = (wxPoint *)node->GetData();
- x1 = x2;
- y1 = y2;
- x2 = p->x;
- y2 = p->y;
- cx4 = (double)(x1 + x2) / 2;
- cy4 = (double)(y1 + y2) / 2;
- cx3 = (double)(x1 + cx4) / 2;
- cy3 = (double)(y1 + cy4) / 2;
-
- wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
-
- cx1 = cx4;
- cy1 = cy4;
- cx2 = (double)(cx1 + x2) / 2;
- cy2 = (double)(cy1 + y2) / 2;
- }
-
- wx_spline_add_point( cx1, cy1 );
- wx_spline_add_point( x2, y2 );
-
- wx_spline_draw_point_array( this );
-}
-
-#endif // wxUSE_SPLINES
-
-// ----------------------------------------------------------------------------
-// Partial Text Extents
-// ----------------------------------------------------------------------------
-
-
-// Each element of the widths array will be the width of the string up to and
-// including the corresponding character in text. This is the generic
-// implementation, the port-specific classes should do this with native APIs
-// if available and if faster. Note: pango_layout_index_to_pos is much slower
-// than calling GetTextExtent!!
-
-#define FWC_SIZE 256
-
-class FontWidthCache
-{
-public:
- FontWidthCache() : m_scaleX(1), m_widths(NULL) { }
- ~FontWidthCache() { delete []m_widths; }
-
- void Reset()
- {
- if (!m_widths)
- m_widths = new int[FWC_SIZE];
-
- memset(m_widths, 0, sizeof(int)*FWC_SIZE);
- }
-
- wxFont m_font;
- double m_scaleX;
- int *m_widths;
-};
-
-static FontWidthCache s_fontWidthCache;
-
-bool wxDCBase::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
-{
- int totalWidth = 0;
-
- const size_t len = text.length();
- widths.Empty();
- widths.Add(0, len);
-
- // reset the cache if font or horizontal scale have changed
- if ( !s_fontWidthCache.m_widths ||
- !wxIsSameDouble(s_fontWidthCache.m_scaleX, m_scaleX) ||
- (s_fontWidthCache.m_font != GetFont()) )
- {
- s_fontWidthCache.Reset();
- s_fontWidthCache.m_font = GetFont();
- s_fontWidthCache.m_scaleX = m_scaleX;
- }
-
- // Calculate the position of each character based on the widths of
- // the previous characters
- int w, h;
- for ( size_t i = 0; i < len; i++ )
- {
- const wxChar c = text[i];
- unsigned int c_int = (unsigned int)c;
-
- if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0))
- {
- w = s_fontWidthCache.m_widths[c_int];
- }
- else
- {
- GetTextExtent(c, &w, &h);
- if (c_int < FWC_SIZE)
- s_fontWidthCache.m_widths[c_int] = w;
- }
-
- totalWidth += w;
- widths[i] = totalWidth;
- }
-
- return true;
-}
-
-
-// ----------------------------------------------------------------------------
-// enhanced text drawing
-// ----------------------------------------------------------------------------
-
-void wxDCBase::GetMultiLineTextExtent(const wxString& text,
- wxCoord *x,
- wxCoord *y,
- wxCoord *h,
- const wxFont *font) const
-{
- wxCoord widthTextMax = 0, widthLine,
- heightTextTotal = 0, heightLineDefault = 0, heightLine = 0;
-
- wxString curLine;
- for ( const wxChar *pc = text; ; pc++ )
- {
- if ( *pc == _T('\n') || *pc == _T('\0') )
- {
- if ( curLine.empty() )
- {
- // we can't use GetTextExtent - it will return 0 for both width
- // and height and an empty line should count in height
- // calculation
-
- // assume that this line has the same height as the previous
- // one
- if ( !heightLineDefault )
- heightLineDefault = heightLine;
-
- if ( !heightLineDefault )
- {
- // but we don't know it yet - choose something reasonable
- GetTextExtent(_T("W"), NULL, &heightLineDefault,
- NULL, NULL, font);
- }
-
- heightTextTotal += heightLineDefault;
- }
- else
- {
- GetTextExtent(curLine, &widthLine, &heightLine,
- NULL, NULL, font);
- if ( widthLine > widthTextMax )
- widthTextMax = widthLine;
- heightTextTotal += heightLine;
- }
-
- if ( *pc == _T('\n') )
- {
- curLine.clear();
- }
- else
- {
- // the end of string
- break;
- }
- }
- else
- {
- curLine += *pc;
- }
- }
-
- if ( x )
- *x = widthTextMax;
- if ( y )
- *y = heightTextTotal;
- if ( h )
- *h = heightLine;
-}
-
-void wxDCBase::DrawLabel(const wxString& text,
- const wxBitmap& bitmap,
- const wxRect& rect,
- int alignment,
- int indexAccel,
- wxRect *rectBounding)
-{
- // find the text position
- wxCoord widthText, heightText, heightLine;
- GetMultiLineTextExtent(text, &widthText, &heightText, &heightLine);
-
- wxCoord width, height;
- if ( bitmap.Ok() )
- {
- width = widthText + bitmap.GetWidth();
- height = bitmap.GetHeight();
- }
- else // no bitmap
- {
- width = widthText;
- height = heightText;
- }
-
- wxCoord x, y;
- if ( alignment & wxALIGN_RIGHT )
- {
- x = rect.GetRight() - width;
- }
- else if ( alignment & wxALIGN_CENTRE_HORIZONTAL )
- {
- x = (rect.GetLeft() + rect.GetRight() + 1 - width) / 2;
- }
- else // alignment & wxALIGN_LEFT
- {
- x = rect.GetLeft();
- }
-
- if ( alignment & wxALIGN_BOTTOM )
- {
- y = rect.GetBottom() - height;
- }
- else if ( alignment & wxALIGN_CENTRE_VERTICAL )
- {
- y = (rect.GetTop() + rect.GetBottom() + 1 - height) / 2;
- }
- else // alignment & wxALIGN_TOP
- {
- y = rect.GetTop();
- }
-
- // draw the bitmap first
- wxCoord x0 = x,
- y0 = y,
- width0 = width;
- if ( bitmap.Ok() )
- {
- DrawBitmap(bitmap, x, y, true /* use mask */);
-
- wxCoord offset = bitmap.GetWidth() + 4;
- x += offset;
- width -= offset;
-
- y += (height - heightText) / 2;
- }
-
- // we will draw the underscore under the accel char later
- wxCoord startUnderscore = 0,
- endUnderscore = 0,
- yUnderscore = 0;
-
- // split the string into lines and draw each of them separately
- wxString curLine;
- for ( wxString::const_iterator pc = text.begin(); ; ++pc )
- {
- if ( *pc == _T('\n') || pc == text.end() )
- {
- int xRealStart = x; // init it here to avoid compielr warnings
-
- if ( !curLine.empty() )
- {
- // NB: can't test for !(alignment & wxALIGN_LEFT) because
- // wxALIGN_LEFT is 0
- if ( alignment & (wxALIGN_RIGHT | wxALIGN_CENTRE_HORIZONTAL) )
- {
- wxCoord widthLine;
- GetTextExtent(curLine, &widthLine, NULL);
-
- if ( alignment & wxALIGN_RIGHT )
- {
- xRealStart += width - widthLine;
- }
- else // if ( alignment & wxALIGN_CENTRE_HORIZONTAL )
- {
- xRealStart += (width - widthLine) / 2;
- }
- }
- //else: left aligned, nothing to do
-
- DrawText(curLine, xRealStart, y);
- }
-
- y += heightLine;
-
- // do we have underscore in this line? we can check yUnderscore
- // because it is set below to just y + heightLine if we do
- if ( y == yUnderscore )
- {
- // adjust the horz positions to account for the shift
- startUnderscore += xRealStart;
- endUnderscore += xRealStart;
- }
-
- if ( pc == text.end() )
- break;
-
- curLine.clear();
- }
- else // not end of line
- {
- if ( pc - text.begin() == indexAccel )
- {
- // remeber to draw underscore here
- GetTextExtent(curLine, &startUnderscore, NULL);
- curLine += *pc;
- GetTextExtent(curLine, &endUnderscore, NULL);
-
- yUnderscore = y + heightLine;
- }
- else
- {
- curLine += *pc;
- }
- }
- }
projects / wxWidgets.git / blobdiff