void
XShape::DrawLabel(Canvas &canvas, LabelBlock &label_block,
int x, int y) const
{
if (!label)
return;
SIZE tsize = canvas.text_size(label);
x += 2;
y += 2;
RECT brect;
brect.left = x;
brect.right = brect.left + tsize.cx;
brect.top = y;
brect.bottom = brect.top + tsize.cy;
if (!label_block.check(brect))
return;
canvas.background_transparent();
canvas.set_text_color(Color(0x20, 0x20, 0x20));
canvas.text(x, y, label);
canvas.background_opaque();
}
void XShapeLabel::renderSpecial(Canvas &canvas, LabelBlock &label_block, int x, int y) {
if (label) {
TCHAR Temp[100];
_stprintf(Temp,TEXT("%S"),label);
canvas.background_transparent();
// TODO code: JMW asks, what does this do?
if (ispunct(Temp[0])) {
double dTemp;
Temp[0]='0';
dTemp = _tcstod(Temp, NULL);
dTemp = ALTITUDEMODIFY*dTemp;
if (dTemp > 999)
_stprintf(Temp,TEXT("%.1f"),(dTemp/1000));
else
_stprintf(Temp,TEXT("%d"),int(dTemp));
}
SIZE tsize = canvas.text_size(Temp);
RECT brect;
x+= 2;
y+= 2;
brect.left = x;
brect.right = brect.left+tsize.cx;
brect.top = y;
brect.bottom = brect.top+tsize.cy;
if (!label_block.check(brect))
return;
canvas.set_text_color(Color(0x20,0x20,0x20));
canvas.text(x, y, Temp);
}
}
void
BackgroundDrawHelper::DrawSpotHeight(Canvas &canvas, LabelBlock &block,
const TCHAR *Buffer, POINT pt)
{
if (string_is_empty(Buffer))
return;
RECT brect;
SIZE tsize = canvas.text_size(Buffer);
pt.x += 2;
pt.y += 2;
brect.left = pt.x;
brect.right = brect.left + tsize.cx;
brect.top = pt.y;
brect.bottom = brect.top + tsize.cy;
if (!block.check(brect))
return;
canvas.text(pt.x, pt.y, Buffer);
}
void
TopographyFileRenderer::PaintLabels(Canvas &canvas,
const WindowProjection &projection,
LabelBlock &label_block)
{
if (file.IsEmpty())
return;
fixed map_scale = projection.GetMapScale();
if (!file.IsVisible(map_scale) || !file.IsLabelVisible(map_scale))
return;
UpdateVisibleShapes(projection);
if (visible_labels.empty())
return;
// TODO code: only draw inside screen!
// this will save time with rendering pixmaps especially
// we already do an outer visibility test, but may need a test
// in screen coords
canvas.Select(file.IsLabelImportant(map_scale) ?
Fonts::map_label_important : Fonts::map_label);
canvas.SetTextColor(Color(0x20, 0x20, 0x20));
canvas.SetBackgroundTransparent();
// get drawing info
int iskip = file.GetSkipSteps(map_scale);
#ifdef ENABLE_OPENGL
Matrix2D m1;
m1.Translate(projection.GetScreenOrigin());
m1.Rotate(projection.GetScreenAngle());
m1.Scale(projection.GetScale());
#endif
// Iterate over all shapes in the file
for (auto it = visible_labels.begin(), end = visible_labels.end();
it != end; ++it) {
const XShape &shape = **it;
if (!projection.GetScreenBounds().Overlaps(shape.get_bounds()))
continue;
// Skip shapes without a label
const TCHAR *label = shape.get_label();
if (label == NULL)
continue;
const unsigned short *lines = shape.get_lines();
const unsigned short *end_lines = lines + shape.get_number_of_lines();
#ifdef ENABLE_OPENGL
const ShapePoint *points = shape.get_points();
Matrix2D m2(m1);
m2.Translatex(shape.shape_translation(projection.GetGeoLocation()));
#else
const GeoPoint *points = shape.get_points();
#endif
for (; lines < end_lines; ++lines) {
int minx = canvas.get_width();
int miny = canvas.get_height();
#ifdef ENABLE_OPENGL
const ShapePoint *end = points + *lines;
#else
const GeoPoint *end = points + *lines;
#endif
for (; points < end; points += iskip) {
#ifdef ENABLE_OPENGL
RasterPoint pt = m2.Apply(*points);
#else
RasterPoint pt = projection.GeoToScreen(*points);
#endif
if (pt.x <= minx) {
minx = pt.x;
miny = pt.y;
}
}
points = end;
minx += 2;
miny += 2;
PixelSize tsize = canvas.CalcTextSize(label);
PixelRect brect;
brect.left = minx;
brect.right = brect.left + tsize.cx;
brect.top = miny;
brect.bottom = brect.top + tsize.cy;
if (!label_block.check(brect))
continue;
canvas.text(minx, miny, label);
}
}
}