+ const double y0 = get_height() * .25;
+ const double y1= get_height() * .75;
+
+ const double ym= get_height() * .5;
+
+ // arrow
+ const double xa0= get_height() * .39;
+ const double xa1= get_height() * .61;
+ const double ya0= get_height() * .35;
+ const double ya1= get_height() * .65;
+
+ ArdourCanvas::set_source_rgba (cr, text_color);
+ cairo_set_line_width(cr, 1);
+
+ // left + right
+ cairo_move_to(cr, x0, y0);
+ cairo_line_to(cr, x0, y1);
+ cairo_move_to(cr, x1, y0);
+ cairo_line_to(cr, x1, y1);
+
+ // horiz center line
+ cairo_move_to(cr, x0, ym);
+ cairo_line_to(cr, x1, ym);
+
+ // arrow left
+ cairo_move_to(cr, x0, ym);
+ cairo_line_to(cr, xa0, ya0);
+ cairo_move_to(cr, x0, ym);
+ cairo_line_to(cr, xa0, ya1);
+
+ // arrow right
+ cairo_move_to(cr, x1, ym);
+ cairo_line_to(cr, xa1, ya0);
+ cairo_move_to(cr, x1, ym);
+ cairo_line_to(cr, xa1, ya1);
+ cairo_stroke(cr);
+ }
+ else if ((_elements & VectorIcon) && _icon == DinMidi) {
+ const double x = get_width() * .5;
+ const double y = get_height() * .5;
+ const double r = std::min(x, y) * .75;
+ ArdourCanvas::set_source_rgba (cr, text_color);
+ cairo_set_line_width(cr, 1);
+ cairo_arc (cr, x, y, r, 0, 2 * M_PI);
+ cairo_stroke(cr);
+
+ // pins equally spaced 45deg
+ cairo_arc (cr, x, y * 0.5, r * .15, 0, 2 * M_PI);
+ cairo_fill(cr);
+ cairo_arc (cr, x * 0.5, y, r * .15, 0, 2 * M_PI);
+ cairo_fill(cr);
+ cairo_arc (cr, x * 1.5, y, r * .15, 0, 2 * M_PI);
+ cairo_fill(cr);
+ // .5 + .5 * .5 * sin(45deg), 1.5 - .5 * .5 * cos(45deg)
+ cairo_arc (cr, x * 0.677, y * .677, r * .15, 0, 2 * M_PI);
+ cairo_fill(cr);
+ cairo_arc (cr, x * 1.323, y * .677, r * .15, 0, 2 * M_PI);
+ cairo_fill(cr);
+
+ // bottom notch
+ cairo_arc (cr, x, y+r, r * .28, 1.05 * M_PI, 1.95 * M_PI);
+ cairo_stroke(cr);
+ }
+ else if ((_elements & VectorIcon) && _icon == TransportStop) {
+ const int wh = std::min (get_width(), get_height());
+ cairo_rectangle (cr,
+ (get_width() - wh) * .5 + wh * .25,
+ (get_height() - wh) * .5 + wh * .25,
+ wh * .5, wh * .5);
+
+ VECTORICONSTROKEFILL(0.8);
+ }
+ else if ((_elements & VectorIcon) && _icon == TransportPlay) {
+ const int wh = std::min (get_width(), get_height()) * .5;
+ const double y = get_height() * .5;
+ const double x = get_width() - wh;
+
+ const float tri = ceil(.577 * wh); // 1/sqrt(3)
+
+ cairo_move_to (cr, x + wh * .5, y);
+ cairo_line_to (cr, x - wh * .5, y - tri);
+ cairo_line_to (cr, x - wh * .5, y + tri);
+ cairo_close_path (cr);
+
+ VECTORICONSTROKEFILL(0.8);
+ }
+ else if ((_elements & VectorIcon) && _icon == TransportPanic) {
+ const int wh = std::min (get_width(), get_height()) * .1;
+ const double xc = get_width() * .5;
+ const double yh = get_height();
+ cairo_rectangle (cr,
+ xc - wh, yh *.2,
+ wh * 2, yh *.4);
+ VECTORICONSTROKEFILL(0.8);
+
+ cairo_arc (cr, xc, yh *.75, wh, 0, 2 * M_PI);
+ VECTORICONSTROKEFILL(0.8);
+ }
+ else if ((_elements & VectorIcon) && (_icon == TransportStart || _icon == TransportEnd || _icon == TransportRange)) {
+ // small play triangle
+ int wh = std::min (get_width(), get_height());
+ const double y = get_height() * .5;
+ const double x = get_width() - wh * .5;
+ wh *= .18;
+ const float tri = ceil(.577 * wh * 2); // 1/sqrt(3)
+
+ const float ln = std::min (get_width(), get_height()) * .07;
+
+ if (_icon == TransportStart || _icon == TransportRange) {
+ cairo_rectangle (cr,
+ x - wh - ln, y - tri * 1.7,
+ ln * 2, tri * 3.4);
+
+ VECTORICONSTROKEFILL(1.0);
+ }
+
+ if (_icon == TransportEnd || _icon == TransportRange) {
+ cairo_rectangle (cr,
+ x + wh - ln, y - tri * 1.7,
+ ln * 2, tri * 3.4);
+
+ VECTORICONSTROKEFILL(1.0);
+ }
+
+ if (_icon == TransportStart) {
+ cairo_move_to (cr, x - wh, y);
+ cairo_line_to (cr, x + wh, y - tri);
+ cairo_line_to (cr, x + wh, y + tri);
+ } else {
+ cairo_move_to (cr, x + wh, y);
+ cairo_line_to (cr, x - wh, y - tri);
+ cairo_line_to (cr, x - wh, y + tri);
+ }
+
+ cairo_close_path (cr);
+ VECTORICONSTROKEFILL(1.0);
+ }
+ else if ((_elements & VectorIcon) && _icon == TransportLoop) {
+ const double x = get_width() * .5;
+ const double y = get_height() * .5;
+ const double r = std::min(x, y);
+
+ cairo_arc (cr, x, y, r * .6, 0, 2 * M_PI);
+ cairo_arc_negative (cr, x, y, r * .3, 2 * M_PI, 0);
+
+ VECTORICONSTROKEFILL(1.0);
+#define ARCARROW(rad, ang) \
+ x + (rad) * sin((ang) * 2.0 * M_PI), y + (rad) * cos((ang) * 2.0 * M_PI)
+
+ cairo_move_to (cr, ARCARROW(r * .30, .72));
+ cairo_line_to (cr, ARCARROW(r * .08, .72));
+ cairo_line_to (cr, ARCARROW(r * .54, .60));
+ cairo_line_to (cr, ARCARROW(r * .73, .72));
+ cairo_line_to (cr, ARCARROW(r * .60, .72));
+
+ cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
+ cairo_stroke_preserve(cr);
+ cairo_close_path (cr);
+ cairo_set_source_rgba (cr, 1, 1, 1, 1.0);
+ cairo_fill(cr);
+#undef ARCARROW
+ }
+ else if ((_elements & VectorIcon) && _icon == TransportMetronom) {
+ const double x = get_width() * .5;
+ const double y = get_height() * .5;
+ const double wh = std::min(x, y);
+ const double h = wh * .8;
+ const double w = wh * .5;
+ const double lw = w * .25;
+
+ cairo_rectangle (cr,
+ x - w * .7, y + h * .25,
+ w * 1.4, lw);
+
+ VECTORICONSTROKEFILL(1.0);
+
+ cairo_move_to (cr, x - w, y + h);
+ cairo_line_to (cr, x + w, y + h);
+ cairo_line_to (cr, x + w * .35, y - h);
+ cairo_line_to (cr, x - w * .35, y - h);
+ cairo_line_to (cr, x - w, y + h);
+
+ cairo_move_to (cr, x - w + lw, y + h -lw);
+ cairo_line_to (cr, x - w * .35 + lw, y - h + lw);
+ cairo_line_to (cr, x + w * .35 - lw, y - h + lw);
+ cairo_line_to (cr, x + w - lw, y + h -lw);
+ cairo_line_to (cr, x - w + lw, y + h -lw);
+
+ VECTORICONSTROKEFILL(1.0);
+
+ // ddx = .70 w = .75 * .5 wh = .375 wh
+ // ddy = .75 h - lw = .75 * .8 wh - wh .5 * .2 = .5 wh
+ // ang = (ddx/ddy):
+ // -> angle = atan (ang) = atan (375 / .5) ~= 36deg
+ const double dx = lw * .2; // 1 - cos(tan^-1(ang))
+ const double dy = lw * .4; // 1 - sin(tan^-1(ang))
+ cairo_move_to (cr, x - w * .3 , y + h * .25 + lw * .5);
+ cairo_line_to (cr, x - w + dx , y - h + lw + dy);
+ cairo_line_to (cr, x - w + lw , y - h + lw);
+ cairo_line_to (cr, x - w * .3 + lw, y + h * .25 + lw * .5);
+ cairo_close_path (cr);
+
+ VECTORICONSTROKEFILL(1.0);
+
+ cairo_rectangle (cr,
+ x - w * .7, y + h * .25,
+ w * 1.4, lw);
+ cairo_fill(cr);
+ }
+ else if (_elements & VectorIcon) {
+ // missing icon
+ assert(0);