// Returns a "discernible" background color. If the background mode
// is Solid, the returned value is just the background color. If the
// background mode is Gradient, the returned color is an average of
// the two gradient colors
const ColorAttribute AnnotationAttributes::GetDiscernibleBackgroundColor() const
{
ColorAttribute retval;
double bg[4];
if (GetBackgroundMode() == Solid)
{
GetBackgroundColor().GetRgba(bg);
}
else
{
double gbg1[4], gbg2[4];
GetGradientColor1().GetRgba(gbg1);
GetGradientColor2().GetRgba(gbg2);
bg[0] = (gbg1[0] + gbg2[0]) * 0.5;
bg[1] = (gbg1[1] + gbg2[1]) * 0.5;
bg[2] = (gbg1[2] + gbg2[2]) * 0.5;
bg[3] = (gbg1[3] + gbg2[3]) * 0.5;
}
retval.SetRgba2(bg);
return retval;
}
void CLCDColorText::OnDraw(CLCDGfxBase &rGfx)
{
if(GetBackgroundMode() == OPAQUE)
{
HBRUSH backbrush = CreateSolidBrush(m_backColor);
// clear the clipped area
RECT rcClp = { 0, 0, m_Size.cx, m_Size.cy };
FillRect(rGfx.GetHDC(), &rcClp, backbrush);
// clear the logical area
RECT rcLog = { 0, 0, m_sizeLogical.cx, m_sizeLogical.cy };
FillRect(rGfx.GetHDC(), &rcLog, backbrush);
DeleteObject(backbrush);
}
if(m_nTextLength)
{
// map mode text, with transparency
int nOldMapMode = SetMapMode(rGfx.GetHDC(), MM_TEXT);
int nOldBkMode = SetBkMode(rGfx.GetHDC(), TRANSPARENT);
// select current font
HFONT hOldFont = (HFONT)SelectObject(rGfx.GetHDC(), m_hFont);
// select color
COLORREF crOldTextColor = SetTextColor(rGfx.GetHDC(), m_crForegroundColor);
if (m_bRecalcExtent)
{
int nTextFormat;
RECT rExtent;
// calculate vertical extent with word wrap
nTextFormat = (m_nTextFormat | DT_WORDBREAK | DT_CALCRECT);
rExtent.left = rExtent.top = 0;
rExtent.right = GetWidth();
rExtent.bottom = GetHeight();
DrawTextEx(rGfx.GetHDC(), (LPTSTR)m_sText.c_str(), static_cast<int>(m_nTextLength), &rExtent, nTextFormat, &m_dtp);
m_sizeVExtent.cx = rExtent.right;
m_sizeVExtent.cy = rExtent.bottom;
// calculate horizontal extent w/o word wrap
nTextFormat = (m_nTextFormat | DT_CALCRECT);
rExtent.left = rExtent.top = 0;
rExtent.right = GetWidth();
rExtent.bottom = GetHeight();
DrawTextEx(rGfx.GetHDC(), (LPTSTR)m_sText.c_str(), static_cast<int>(m_nTextLength), &rExtent, nTextFormat, &m_dtp);
m_sizeHExtent.cx = rExtent.right;
m_sizeHExtent.cy = rExtent.bottom;
m_bRecalcExtent = FALSE;
//For scrolling
m_PixelLength = m_sizeHExtent.cx;
m_StartX = 0;
if( m_bAutoScroll )
{
if( m_PixelLength > GetWidth() )
{
m_ScrollRate = -1*GetHeight();
}
else
{
m_ScrollRate = 0;
}
}
if( m_ScrollRate > 0 )
{
if( GetWidth() > m_PixelLength + m_ScrollBuffer )
{
m_JumpDistance = -1 * GetWidth();
}
else
{
m_JumpDistance = -1 * (m_PixelLength + m_ScrollBuffer);
}
}
else if( m_ScrollRate < 0 )
{
if( GetWidth() > m_PixelLength + m_ScrollBuffer )
{
m_JumpDistance = GetWidth();
}
else
{
m_JumpDistance = m_PixelLength + m_ScrollBuffer;
}
}
m_LoopX = m_JumpDistance;
}
if( IsVisible() )
{
if( m_ScrollRate == 0 )
{
RECT rBoundary = { 0, 0, 0 + GetLogicalSize().cx, 0 + GetLogicalSize().cy };
DrawTextEx(rGfx.GetHDC(), (LPTSTR)m_sText.c_str(), static_cast<int>(m_nTextLength), &rBoundary, m_nTextFormat, &m_dtp);
}
else
{
RECT rBoundaryFirst = { m_StartX, 0, 0 + GetLogicalSize().cx, 0 + GetLogicalSize().cy };
RECT rBoundarySecond = { m_LoopX, 0, 0 + GetLogicalSize().cx, 0 + GetLogicalSize().cy };
DrawTextEx(rGfx.GetHDC(), (LPTSTR)m_sText.c_str(), static_cast<int>(m_nTextLength),
&rBoundaryFirst, m_nTextFormat, &m_dtp);
DrawTextEx(rGfx.GetHDC(), (LPTSTR)m_sText.c_str(), static_cast<int>(m_nTextLength),
&rBoundarySecond, m_nTextFormat, &m_dtp);
}
}
// restores
SetMapMode(rGfx.GetHDC(), nOldMapMode);
SetTextColor(rGfx.GetHDC(), crOldTextColor);
SetBkMode(rGfx.GetHDC(), nOldBkMode);
SelectObject(rGfx.GetHDC(), hOldFont);
}
}
void CLCDText::OnDraw(CLCDGfx &rGfx)
{
if (GetBackgroundMode() == OPAQUE)
{
// clear the clipped area
RECT rcClp = { 0, 0, m_Size.cx, m_Size.cy };
FillRect(rGfx.GetHDC(), &rcClp, (HBRUSH) GetStockObject(BLACK_BRUSH));
// clear the logical area
RECT rcLog = { 0, 0, m_sizeLogical.cx, m_sizeLogical.cy };
FillRect(rGfx.GetHDC(), &rcLog, (HBRUSH) GetStockObject(BLACK_BRUSH));
}
if (m_nTextLength)
{
// map mode text, with transparency
int nOldMapMode = SetMapMode(rGfx.GetHDC(), MM_TEXT);
int nOldBkMode = SetBkMode(rGfx.GetHDC(), GetBackgroundMode());
// select current font
HFONT hOldFont = (HFONT)SelectObject(rGfx.GetHDC(), m_hFont);
// select color
COLORREF crOldTextColor = SetTextColor(rGfx.GetHDC(), m_crColor);
if (m_bRecalcExtent)
{
int nTextFormat;
RECT rExtent;
// calculate vertical extent with word wrap
nTextFormat = (m_nTextFormat | DT_WORDBREAK | DT_CALCRECT);
rExtent.left = rExtent.top = 0;
rExtent.right = GetWidth();
rExtent.bottom = GetHeight();
DrawTextEx(rGfx.GetHDC(), (LPTSTR)m_sText.c_str(), static_cast<int>(m_nTextLength), &rExtent, nTextFormat, &m_dtp);
m_sizeVExtent.cx = rExtent.right;
m_sizeVExtent.cy = rExtent.bottom;
// calculate horizontal extent w/o word wrap
nTextFormat = (m_nTextFormat | DT_CALCRECT);
rExtent.left = rExtent.top = 0;
rExtent.right = GetWidth();
rExtent.bottom = GetHeight();
DrawTextEx(rGfx.GetHDC(), (LPTSTR)m_sText.c_str(), static_cast<int>(m_nTextLength), &rExtent, nTextFormat, &m_dtp);
m_sizeHExtent.cx = rExtent.right;
m_sizeHExtent.cy = rExtent.bottom;
m_bRecalcExtent = FALSE;
}
if (IsVisible())
{
DrawText(rGfx);
}
// restores
SetMapMode(rGfx.GetHDC(), nOldMapMode);
SetTextColor(rGfx.GetHDC(), crOldTextColor);
SetBkMode(rGfx.GetHDC(), nOldBkMode);
SelectObject(rGfx.GetHDC(), hOldFont);
}
}
