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first stab at label box pointers. <option>top</option> on a <label> makes

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such a box:

    _____/\_____
    |   Booo   |
    |__________|

likewise with options bottom, left, right. The size can be set via option
<marker-offset> (analogous to <tape> offsets), which describes the distance
from the base to the peak. Default: 8 px
This commit is contained in:
mfranz 2006-07-24 17:09:03 +00:00
parent a6c8610682
commit 7a52695de0
2 changed files with 47 additions and 4 deletions
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1
src/Instrumentation/HUD/HUD.hxx
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@ -439,6 +439,7 @@ private:
int _blink;
bool _box;
float _text_y;
float _marker_offset;
SGCondition *_blink_condition;
double _blink_interval;

50
src/Instrumentation/HUD/HUD_label.cxx
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@ -32,6 +32,7 @@ HUD::Label::Label(HUD *hud, const SGPropertyNode *n, float x, float y) :
_input(n->getNode("input", false)),
_fontsize(fgGetInt("/sim/startup/xsize") > 1000 ? FONT_LARGE : FONT_SMALL), // FIXME
_box(n->getBoolValue("box", false)),
_marker_offset(n->getFloatValue("marker-offset", 8)),
_blink_condition(0),
_blink_interval(n->getFloatValue("blinking/interval", -1.0f)),
_blink_target(0.0),
@ -84,10 +85,51 @@ void HUD::Label::draw(void)
return;
if (_box) {
draw_line(_x, _y, _x + _w, _y);
draw_line(_x + _w, _y, _x + _w, _y + _h);
draw_line(_x + _w, _y + _h, _x, _y + _h);
draw_line(_x, _y + _h, _x, _y);
const float tan30 = 0.57735;
float base = _marker_offset * tan30;
float l, r, p;
l = _center_x - base;
r = _center_x + base;
if (option_bottom()) {
p = _y - _marker_offset;
draw_line(_x, _y, l, _y);
draw_line(l, _y, _center_x, p);
draw_line(_center_x, p, r, _y);
draw_line(r, _y, _x + _w, _y);
} else
draw_line(_x, _y, _x + _w, _y);
if (option_top()) {
p = _y + _h + _marker_offset;
draw_line(_x, _y + _h, l, _y + _h);
draw_line(l, _y + _h, _center_x, p);
draw_line(_center_x, p, r, _y + _h);
draw_line(r, _y + _h, _x + _w, _y + _h);
} else
draw_line(_x + _w, _y + _h, _x, _y + _h);
l = _center_y - base;
r = _center_y + base;
if (option_left()) {
p = _x - _marker_offset;
draw_line(_x, _y, _x, l);
draw_line(_x, l, p, _center_y);
draw_line(p, _center_y, _x, r);
draw_line(_x, r, _x, _y + _h);
} else
draw_line(_x, _y + _h, _x, _y);
if (option_right()) {
p = _x + _w + _marker_offset;
draw_line(_x + _w, _y, _x + _w, l);
draw_line(_x + _w, l, p, _center_y);
draw_line(p, _center_y, _x + _w, r);
draw_line(_x + _w, r, _x + _w, _y + _h);
} else
draw_line(_x + _w, _y, _x + _w, _y + _h);
}
const int BUFSIZE = 256;