void MHRectangle::Display(MHEngine *engine)
{
if (! m_fRunning) return;
if (m_nBoxWidth == 0 || m_nBoxHeight == 0) return; // Can't draw zero sized boxes.
// The bounding box is assumed always to be True.
MHRgba lineColour = GetColour(m_LineColour);
MHRgba fillColour = GetColour(m_FillColour);
MHContext *d = engine->GetContext();
// Fill the centre.
if (m_nBoxHeight < m_nLineWidth*2 || m_nBoxWidth < m_nLineWidth*2) {
// If the area is very small but non-empty fill it with the line colour
d->DrawRect(m_nPosX, m_nPosY, m_nBoxWidth, m_nBoxHeight, lineColour);
}
else {
d->DrawRect(m_nPosX + m_nLineWidth, m_nPosY + m_nLineWidth,
m_nBoxWidth - m_nLineWidth*2, m_nBoxHeight - m_nLineWidth*2, fillColour);
// Draw the lines round the outside. UK MHEG allows us to treat all line styles as solid.
// It isn't clear when we draw dashed and dotted lines what colour to put in the spaces.
d->DrawRect(m_nPosX, m_nPosY, m_nBoxWidth, m_nLineWidth, lineColour);
d->DrawRect(m_nPosX, m_nPosY + m_nBoxHeight - m_nLineWidth, m_nBoxWidth, m_nLineWidth, lineColour);
d->DrawRect(m_nPosX, m_nPosY + m_nLineWidth, m_nLineWidth, m_nBoxHeight - m_nLineWidth*2, lineColour);
d->DrawRect(m_nPosX + m_nBoxWidth - m_nLineWidth, m_nPosY + m_nLineWidth,
m_nLineWidth, m_nBoxHeight - m_nLineWidth*2, lineColour);
}
}
void MHSlider::Display(MHEngine *engine)
{
MHContext *d = engine->GetContext();
MHRgba colour;
if (m_fHighlightStatus && m_fEngineResp)
{
colour = GetColour(m_highlightRefColour);
}
else
{
colour = GetColour(m_sliderRefColour);
}
int major; // Direction of change.
if (m_orientation == SliderLeft || m_orientation == SliderRight)
{
major = m_nBoxWidth;
}
else
{
major = m_nBoxHeight;
}
if (max_value <= min_value)
{
return; // Avoid divide by zero if error.
}
if (m_style == SliderNormal)
{
// This is drawn as a 9 pixel wide "thumb" at the position.
major -= 9; // Width of "thumb"
int posn = major * (slider_value - min_value) / (max_value - min_value);
switch (m_orientation)
{
case SliderLeft:
d->DrawRect(m_nPosX + posn, m_nPosY, 9, m_nBoxHeight, colour);
break;
case SliderRight:
d->DrawRect(m_nPosX + m_nBoxWidth - posn - 9, m_nPosY, 9, m_nBoxHeight, colour);
break;
case SliderUp:
d->DrawRect(m_nPosX, m_nPosY + m_nBoxHeight - posn - 9, m_nBoxWidth, 9, colour);
break;
case SliderDown:
d->DrawRect(m_nPosX, m_nPosY + posn, m_nBoxWidth, 9, colour);
break;
}
}
else
{
// Thermometer and proportional sliders are drawn as bars. Thermometers
// run from the start to the position, proportional sliders from the
// position for the "portion".
int start = 0;
int end = major * (slider_value - min_value) / (max_value - min_value);
if (m_style == SliderProp)
{
start = end;
end = major * (slider_value + portion - min_value) / (max_value - min_value);
}
switch (m_orientation)
{
case SliderLeft:
d->DrawRect(m_nPosX + start, m_nPosY, end - start, m_nBoxHeight, colour);
break;
case SliderRight:
d->DrawRect(m_nPosX + m_nBoxWidth - end, m_nPosY, end - start, m_nBoxHeight, colour);
break;
case SliderUp:
d->DrawRect(m_nPosX, m_nPosY + m_nBoxHeight - end, m_nBoxWidth, end - start, colour);
break;
case SliderDown:
d->DrawRect(m_nPosX, m_nPosY + start, m_nBoxWidth, end - start, colour);
break;
}
}
}
