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construct vectorized Zoom Icons

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This commit is contained in:
Robin Gareus 2015-05-24 23:08:46 +02:00
parent 1515ea69ec
commit ab6a035076
2 changed files with 76 additions and 1 deletions
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74
libs/gtkmm2ext/ardour_icon.cc
View File

@ -414,9 +414,81 @@ Gtkmm2ext::ArdourIcon::render (cairo_t *cr,
}
break;
case ZoomIn:
case ZoomOut:
case ZoomFull:
{
const double x = width * .5;
const double y = height * .5;
const double r = std::min (x, y) * .7;
const double wh = std::min (x, y) * .45;
// draw handle first
#define LINE45DEG(rad) \
x + r * (rad) * .707, y + r * (rad) * .707 // sin(45deg) = cos(45deg) = .707
cairo_move_to (cr, LINE45DEG(.9));
cairo_line_to (cr, LINE45DEG(1.3));
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
cairo_set_line_width (cr, 3.0);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_stroke (cr);
#undef LINE45DEG
// lens
ardour_canvas_set_source_rgba (cr, fg_color);
cairo_arc (cr, x, y, r, 0, 2 * M_PI);
cairo_fill_preserve (cr);
// add a lens gradient
cairo_pattern_t *lens;
lens = cairo_pattern_create_radial (x - r, y - r, r * .5, x - r, y - r, r * 2);
cairo_pattern_add_color_stop_rgba (lens, 0, 1, 1, 1, .4);
cairo_pattern_add_color_stop_rgba (lens, 1, 0, 0, 0, .4);
cairo_set_source (cr, lens);
cairo_fill_preserve (cr);
cairo_pattern_destroy (lens);
// outline
cairo_set_line_width (cr, 1.5);
cairo_set_source_rgba (cr, .0, .0, .0, .8);
cairo_stroke (cr);
// add "+", "-" or "[]"
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_width (cr, 1.5);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
if (icon == ZoomIn || icon == ZoomOut) {
cairo_move_to (cr, x - wh, y);
cairo_line_to (cr, x + wh, y);
cairo_stroke (cr);
}
if (icon == ZoomIn) {
cairo_move_to (cr, x, y - wh);
cairo_line_to (cr, x, y + wh);
cairo_stroke (cr);
}
if (icon == ZoomFull) {
const double br0 = std::min (x, y) * .1;
const double br1 = std::min (x, y) * .3;
const double bry = std::min (x, y) * .3;
cairo_move_to (cr, x - br0, y - bry);
cairo_line_to (cr, x - br1, y - bry);
cairo_line_to (cr, x - br1, y + bry);
cairo_line_to (cr, x - br0, y + bry);
cairo_stroke (cr);
cairo_move_to (cr, x + br0, y - bry);
cairo_line_to (cr, x + br1, y - bry);
cairo_line_to (cr, x + br1, y + bry);
cairo_line_to (cr, x + br0, y + bry);
cairo_stroke (cr);
}
}
break;
default:
return false;
} // end case(icon)
} // end switch (icon)
#undef VECTORICONSTROKEFILL
#undef VECTORICONSTROKEOUTLINE

3
libs/gtkmm2ext/gtkmm2ext/ardour_icon.h
View File

@ -23,6 +23,9 @@ namespace Gtkmm2ext { namespace ArdourIcon {
TransportMetronom,
NudgeLeft,
NudgeRight,
ZoomIn,
ZoomOut,
ZoomFull,
};
bool render (cairo_t *cr,