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livetrax/libs/gtkmm2ext/ardour_icon.cc
Robin Gareus 86f56de656 fix the cairo-fletcher-fluctuation
CF reports occasional “rendering icon 1 at size 1 x 1” 
always followed by “rendering icon 1 at size 21 x 21”. 
 
Probably a GTK bug with some specific version of GTK.
2015-05-31 19:40:04 +02:00

1068 lines
30 KiB
C++

/*
Copyright (C) 2009 Paul Davis
Copyright (C) 2015 Robin Gareus <robin@gareus.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <math.h> // M_PI
#include <assert.h>
#include <algorithm> // std:min
#include "gtkmm2ext/ardour_icon.h"
using namespace Gtkmm2ext::ArdourIcon;
/* general style info:
*
* - geometry: icons should be centered, spanning
* wh = std::min (width * .5, height *.5) * .55;
*
* - all shapes should have a contrasting outline
* (usually white foreground, black outline)
*/
#define OUTLINEWIDTH 1.5 // px
#define VECTORICONSTROKEFILL(fillalpha) \
cairo_set_line_width (cr, OUTLINEWIDTH); \
cairo_set_source_rgba (cr, 0, 0, 0, 1.0); \
cairo_stroke_preserve (cr); \
cairo_set_source_rgba (cr, 1, 1, 1, (fillalpha)); \
cairo_fill (cr);
#define VECTORICONSTROKEOUTLINE(LW, color) \
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); \
cairo_set_line_width (cr, (LW) + OUTLINEWIDTH); \
ardour_icon_set_source_inv_rgba (cr, color); \
cairo_stroke_preserve (cr); \
ardour_icon_set_source_rgba (cr, color); \
cairo_set_line_width (cr, (LW)); \
cairo_stroke (cr);
/** convert 32bit 'RRGGBBAA' to cairo doubles
* from libs/canvas/utils.cc and canvas/types.h: typedef uint32_t Color;
*/
static void ardour_icon_set_source_rgba (cairo_t *cr, uint32_t color)
{
cairo_set_source_rgba (cr,
((color >> 24) & 0xff) / 255.0,
((color >> 16) & 0xff) / 255.0,
((color >> 8) & 0xff) / 255.0,
((color >> 0) & 0xff) / 255.0
);
}
/** inverse color */
static void ardour_icon_set_source_inv_rgba (cairo_t *cr, uint32_t color)
{
cairo_set_source_rgba (cr,
1.0 - ((color >> 24) & 0xff) / 255.0,
1.0 - ((color >> 16) & 0xff) / 255.0,
1.0 - ((color >> 8) & 0xff) / 255.0,
((color >> 0) & 0xff) / 255.0
);
}
/*****************************************************************************
* Tool Icons.
* Foreground is always white, compatible with small un-blurred rendering.
*/
/** internal edit icon */
static void icon_tool_content (cairo_t *cr, const int width, const int height) {
#define EM_POINT(X,Y) round (x + (X) * em) + .5, round (y + (Y) * em) + .5
const double x = width * .5;
const double y = height * .5;
const double em = std::min (x, y) * .1; // 1px at 20x20
// draw dot outlines (control-points)
cairo_move_to (cr, EM_POINT(-6.0, 0.0));
cairo_close_path (cr);
cairo_move_to (cr, EM_POINT(-2.5, 4.0));
cairo_close_path (cr);
cairo_move_to (cr, EM_POINT( 5.0, -5.0));
cairo_close_path (cr);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
ardour_icon_set_source_inv_rgba (cr, 0xffffffff);
cairo_set_line_width (cr, 3 * em + OUTLINEWIDTH);
cairo_stroke (cr);
// "midi note" lines
cairo_move_to (cr, EM_POINT(-7.0, -5.0));
cairo_line_to (cr, EM_POINT( 0.0, -5.0));
cairo_move_to (cr, EM_POINT( 2.0, 4.0));
cairo_line_to (cr, EM_POINT( 6.0, 4.0));
// automation line (connect control-points)
cairo_move_to (cr, EM_POINT(-6.0, 0.0));
cairo_line_to (cr, EM_POINT(-2.5, 4.0));
cairo_line_to (cr, EM_POINT( 5.0, -5.0));
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
VECTORICONSTROKEOUTLINE(1 * em, 0xffffffff);
// remove automation line outline at control-points
cairo_move_to (cr, EM_POINT(-6.0, 0.0));
cairo_close_path (cr);
cairo_move_to (cr, EM_POINT(-2.5, 4.0));
cairo_close_path (cr);
cairo_move_to (cr, EM_POINT( 5.0, -5.0));
cairo_close_path (cr);
ardour_icon_set_source_rgba (cr, 0xffffffff);
cairo_set_line_width (cr, 3 * em);
cairo_stroke (cr);
#undef EM_POINT
}
/** range tool |<->| */
static void icon_tool_range (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double wh = std::min (x, y) * .55;
const double lw = rint (wh / 6.0); // line width
const double ar = wh * .6; // arrow
const double bw = ceil (wh) - .5;
const double y0 = ceil (y);
const double ym = rint (y0 - wh * .1) + .5; // arrow-horizontal; slightly to the top, on a px
const double x0 = rint (x) - bw; // left arrow tip
const double x1 = rint (x) + bw; // right arrow tip
// left and right box
cairo_move_to (cr, x0, y0 - bw);
cairo_line_to (cr, x0, y0 + bw);
VECTORICONSTROKEOUTLINE(lw, 0xffffffff);
cairo_move_to (cr, x1, y0 - bw);
cairo_line_to (cr, x1, y0 + bw);
VECTORICONSTROKEOUTLINE(lw, 0xffffffff);
// arrows
cairo_move_to (cr, x0 + ar, ym - ar);
cairo_line_to (cr, x0 + .5, ym);
cairo_line_to (cr, x0 + ar, ym + ar);
cairo_move_to (cr, x1 - ar, ym - ar);
cairo_line_to (cr, x1 - .5, ym);
cairo_line_to (cr, x1 - ar, ym + ar);
// line connecting the arrows
cairo_move_to (cr, x0, ym);
cairo_line_to (cr, x1, ym);
VECTORICONSTROKEOUTLINE(lw, 0xffffffff);
cairo_set_source_rgba (cr, 1, 1, 1, 1.0);
cairo_set_line_width (cr, lw);
cairo_move_to (cr, x0, y0 - bw);
cairo_line_to (cr, x0, y0 + bw);
cairo_stroke (cr);
cairo_move_to (cr, x1, y0 - bw);
cairo_line_to (cr, x1, y0 + bw);
cairo_stroke (cr);
}
/** Grab/Object tool - 6x8em "hand", with 'em' wide index finger. */
static void icon_tool_grab (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double em = std::min (x, y) * .15; // 1.5px at 20x20
#define EM_POINT(X,Y) x + (X) * em, y + (Y) * em
// wrist
cairo_move_to (cr, EM_POINT( 2.0, 4.0));
cairo_line_to (cr, EM_POINT(-1.5, 4.0));
cairo_line_to (cr, EM_POINT(-2.5, 2.0));
// thumb
cairo_line_to (cr, EM_POINT(-3.0, 1.0));
// index finger
cairo_line_to (cr, EM_POINT(-2.0, 0.0));
cairo_line_to (cr, EM_POINT(-2.1, -4.0));
cairo_line_to (cr, EM_POINT(-1.5, -4.5));
cairo_line_to (cr, EM_POINT(-1.1, -4.0));
cairo_line_to (cr, EM_POINT(-1.0, 0.1));
// middle finger knuckle
cairo_line_to (cr, EM_POINT(-0.6, 0.3));
cairo_line_to (cr, EM_POINT(-0.3, 0.0));
cairo_line_to (cr, EM_POINT(-0.2, -0.2));
cairo_line_to (cr, EM_POINT( 0.1, -0.3));
cairo_line_to (cr, EM_POINT( 0.4, -0.2));
cairo_line_to (cr, EM_POINT( 0.5, 0.1));
// ring finger knuckle
cairo_line_to (cr, EM_POINT( 0.8, 0.4));
cairo_line_to (cr, EM_POINT( 1.1, 0.2));
cairo_line_to (cr, EM_POINT( 1.2, 0.0));
cairo_line_to (cr, EM_POINT( 1.5, -0.1));
cairo_line_to (cr, EM_POINT( 1.8, 0.0));
cairo_line_to (cr, EM_POINT( 1.9, 0.4));
// pinky
cairo_line_to (cr, EM_POINT( 2.0, 0.6));
cairo_line_to (cr, EM_POINT( 2.4, 0.4));
cairo_line_to (cr, EM_POINT( 2.8, 0.5));
cairo_line_to (cr, EM_POINT( 3.0, 1.0));
// wrist
cairo_line_to (cr, EM_POINT( 3.0, 1.5));
cairo_line_to (cr, EM_POINT( 2.0, 4.0));
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
VECTORICONSTROKEFILL(1.0);
#undef EM_POINT
}
/** cut icon - scissors */
static void icon_tool_cut (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double em = std::min (x, y) * .1; // 1px at 20x20
#define EM_POINT(X,Y) x + (X) * em, y + (Y) * em
cairo_save (cr);
cairo_translate (cr, EM_POINT(4, -3));
cairo_scale (cr, 1.6, 1.0); // ellipse
cairo_arc (cr, 0., 0., 1.5 * em, 0., 2 * M_PI);
cairo_restore (cr);
cairo_move_to (cr, EM_POINT(-6.0, 2.5));
cairo_line_to (cr, EM_POINT( 5.5, -2.0));
cairo_move_to (cr, EM_POINT(-6.0, -2.5));
cairo_line_to (cr, EM_POINT( 5.5, 2.0));
cairo_save (cr);
cairo_translate (cr, EM_POINT(4, 3));
cairo_scale (cr, 1.6, 1.0); // ellipse
cairo_arc (cr, 0., 0., 1.5 * em, 0., 2 * M_PI);
cairo_restore (cr);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
VECTORICONSTROKEOUTLINE (1.5 * em, 0xffffffff);
#undef EM_POINT
}
/** time stretch icon */
static void icon_tool_stretch (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double wh = std::min (x, y) * .55;
const double y0 = ceil (y);
const double bw = rint (wh);
const double lw = rint (wh / 3.0) / 2.0;
const double x0 = rint (x + lw) + .5;
// box indication region
cairo_rectangle (cr, x0 - lw - bw - .5, y0 - bw, lw + bw, 2 * bw);
VECTORICONSTROKEFILL (0.75);
cairo_set_line_width (cr, 1.0);
// inside/left arrow
cairo_move_to (cr, x0, y);
cairo_line_to (cr, x0 - lw * 2, y);
cairo_line_to (cr, x0 - lw * 2, y - lw * 3.5);
cairo_line_to (cr, x0 - lw * 6, y);
cairo_line_to (cr, x0 - lw * 2, y + lw * 3.5);
cairo_line_to (cr, x0 - lw * 2, y);
cairo_set_source_rgba (cr, 0, 0, 0, .5);
cairo_stroke_preserve (cr);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_fill (cr);
// outside/right arrow
cairo_move_to (cr, x0, y);
cairo_line_to (cr, x0 + lw * 2, y);
cairo_line_to (cr, x0 + lw * 2, y - lw * 4);
cairo_line_to (cr, x0 + lw * 6, y);
cairo_line_to (cr, x0 + lw * 2, y + lw * 4);
cairo_line_to (cr, x0 + lw * 2, y);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_stroke_preserve (cr);
cairo_set_source_rgba (cr, 1, 1, 1, 1.0);
cairo_fill (cr);
}
/** audition - small speaker with sound-waves*/
static void icon_tool_audition (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double em = std::min (x, y) * .1; // 1px at 20x20
#define EM_POINT(X,Y) x + (X) * em, y + (Y) * em
cairo_move_to (cr, EM_POINT(-7.0, -2.0));
cairo_line_to (cr, EM_POINT(-7.0, 2.0));
cairo_line_to (cr, EM_POINT(-6.0, 3.0));
cairo_line_to (cr, EM_POINT(-3.0, 3.0));
cairo_line_to (cr, EM_POINT( 2.0, 6.0));
cairo_line_to (cr, EM_POINT( 2.0, -6.0));
cairo_line_to (cr, EM_POINT(-3.0, -3.0));
cairo_line_to (cr, EM_POINT(-6.0, -3.0));
cairo_close_path (cr);
cairo_pattern_t *speaker;
speaker = cairo_pattern_create_linear (EM_POINT(0, -3.0), EM_POINT(0, 3.0));
cairo_pattern_add_color_stop_rgba (speaker, 0.0, 0.8, 0.8, 0.8, 1.0);
cairo_pattern_add_color_stop_rgba (speaker, 0.25, 1.0, 1.0, 1.0, 1.0);
cairo_pattern_add_color_stop_rgba (speaker, 1.0, 0.6, 0.6, 0.6, 1.0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
cairo_set_line_width (cr, 1.5);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_stroke_preserve (cr);
cairo_set_source (cr, speaker);
cairo_fill (cr);
cairo_pattern_destroy (speaker);
// TODO use a slight curve
cairo_move_to (cr, EM_POINT(-3.0, -3.0));
cairo_line_to (cr, EM_POINT(-3.5, 0.0));
cairo_line_to (cr, EM_POINT(-3.0, 3.0));
cairo_set_source_rgba (cr, 0, 0, 0, 0.7);
cairo_set_line_width (cr, 1.0);
cairo_stroke (cr);
cairo_save (cr);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
cairo_set_source_rgba (cr, 1, 1, 1, 1);
cairo_translate (cr, EM_POINT (4.0, 0));
cairo_scale (cr, 0.8, 1.25); // ellipse
cairo_arc (cr, 0, 0, 4 * em, -.5 * M_PI, .5 * M_PI);
cairo_set_line_width (cr, .8 * em);
cairo_stroke (cr);
cairo_arc (cr, 0, 0, 2 * em, -.5 * M_PI, .5 * M_PI);
cairo_set_line_width (cr, .5 * em);
cairo_stroke (cr);
cairo_restore (cr);
#undef EM_POINT
}
/** pen top-left to bottom right */
static void icon_tool_draw (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double em = std::min (x, y) * .1; // 1px at 20x20
#define EM_POINT(X,Y) x + (X) * em, y + (Y) * em
// pen [6,-5] to [-3, 3]
// y = -8 * x / 9 + 1/3
// top-right end
cairo_move_to (cr, EM_POINT( 5.0, -6.11));
cairo_line_to (cr, EM_POINT( 6.4, -5.35)); // todo round properly.
cairo_line_to (cr, EM_POINT( 7.0, -3.88));
// bottom-left w/tip
cairo_line_to (cr, EM_POINT(-2.0, 4.11));
cairo_line_to (cr, EM_POINT(-6.0, 5.66)); // pen tip
cairo_line_to (cr, EM_POINT(-4.0, 1.88));
cairo_close_path (cr);
cairo_pattern_t *pen;
pen = cairo_pattern_create_linear (EM_POINT(-3.0, -6.0), EM_POINT(6.0, 4.0));
cairo_pattern_add_color_stop_rgba (pen, 0.4, 0.6, 0.6, 0.6, 1.0);
cairo_pattern_add_color_stop_rgba (pen, 0.5, 1.0, 1.0, 1.0, 1.0);
cairo_pattern_add_color_stop_rgba (pen, 0.6, 0.1, 0.1, 0.1, 1.0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
cairo_set_line_width (cr, em + .5);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_stroke_preserve (cr);
cairo_set_source (cr, pen);
cairo_fill (cr);
// separate the tip
cairo_move_to (cr, EM_POINT(-2.0, 4.11));
cairo_line_to (cr, EM_POINT(-3.0, 2.8)); // slight curve [-3,3]
cairo_line_to (cr, EM_POINT(-4.0, 2.0));
cairo_set_line_width (cr, OUTLINEWIDTH);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_stroke (cr);
// pen tip
cairo_move_to (cr, EM_POINT(-5.0, 3.9));
cairo_line_to (cr, EM_POINT(-6.0, 5.66));
cairo_line_to (cr, EM_POINT(-4.1, 4.9));
cairo_close_path (cr);
cairo_set_source_rgba (cr, 0, 0, 0, 0.7);
cairo_set_line_width (cr, em);
cairo_stroke_preserve (cr);
cairo_fill (cr);
cairo_pattern_destroy (pen);
#undef EM_POINT
}
/** Toolbar icon - Time Axis View reduce height */
static void icon_tav_shrink (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double wh = std::min (x, y) * .66;
const double ar = std::min (x, y) * .15;
const double tri = .7 * (wh - ar);
cairo_rectangle (cr, x - wh, y - ar, 2 * wh, 2 * ar);
VECTORICONSTROKEFILL(.75);
cairo_set_line_width (cr, 1.0);
cairo_move_to (cr, x, y - ar - 0.5);
cairo_line_to (cr, x - tri, y - wh + 0.5);
cairo_line_to (cr, x + tri, y - wh + 0.5);
cairo_close_path (cr);
cairo_set_source_rgba (cr, 1, 1, 1, .75);
cairo_stroke_preserve (cr);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_fill (cr);
cairo_move_to (cr, x, y + ar + 0.5);
cairo_line_to (cr, x - tri, y + wh - 0.5);
cairo_line_to (cr, x + tri, y + wh - 0.5);
cairo_close_path (cr);
cairo_set_source_rgba (cr, 1, 1, 1, .75);
cairo_stroke_preserve (cr);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_fill (cr);
}
/** Toolbar icon - Time Axis View increase height */
static void icon_tav_expand (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double wh = std::min (x, y) * .66;
const double ar = std::min (x, y) * .15;
const double tri = .7 * (wh - ar);
cairo_rectangle (cr, x - wh, y - wh, 2 * wh, 2 * wh);
VECTORICONSTROKEFILL(.75);
cairo_set_line_width (cr, 1.0);
cairo_move_to (cr, x, y - wh + 0.5);
cairo_line_to (cr, x - tri, y - ar - 0.5);
cairo_line_to (cr, x + tri, y - ar - 0.5);
cairo_close_path (cr);
cairo_set_source_rgba (cr, 1, 1, 1, .5);
cairo_stroke_preserve (cr);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_fill (cr);
cairo_move_to (cr, x , y + wh - 0.5);
cairo_line_to (cr, x - tri, y + ar + 0.5);
cairo_line_to (cr, x + tri, y + ar + 0.5);
cairo_close_path (cr);
cairo_set_source_rgba (cr, 1, 1, 1, .5);
cairo_stroke_preserve (cr);
cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
cairo_fill (cr);
}
/*****************************************************************************
* Record enable (transport & track header).
*
* hardcoded "red" #f46f6f
*/
/** standard rec-enable circle */
static void icon_rec_enable (cairo_t *cr, const int width, const int height, const Gtkmm2ext::ActiveState state)
{
const double x = width * .5;
const double y = height * .5;
const double r = std::min (x, y) * .55;
cairo_arc (cr, x, y, r, 0, 2 * M_PI);
if (state == Gtkmm2ext::ExplicitActive)
cairo_set_source_rgba (cr, 0.95, 0.10, 0.10, 1.0);
else
cairo_set_source_rgba (cr, 0.95, 0.44, 0.44, 1.0); // #f46f6f
cairo_fill_preserve (cr);
cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.8); // outline
cairo_set_line_width (cr, 1);
cairo_stroke (cr);
}
/** tape-mode, "reel" */
static void icon_rec_tape (cairo_t *cr, const int width, const int height, const Gtkmm2ext::ActiveState state)
{
const double x = width * .5;
const double y = height * .5;
const double r = std::min (x, y) * .6;
const double slit = .11 * M_PI;
cairo_translate (cr, x, y);
cairo_arc (cr, 0, 0, r, 0, 2 * M_PI);
if (state == Gtkmm2ext::ExplicitActive) {
cairo_set_source_rgba (cr, .95, .1, .1, 1.);
} else {
cairo_set_source_rgba (cr, .95, .44, .44, 1.); // #f46f6f
}
cairo_fill_preserve (cr);
cairo_set_source_rgba (cr, .0, .0, .0, .5);
cairo_set_line_width (cr, 1);
cairo_stroke (cr);
cairo_save (cr);
cairo_set_source_rgba (cr, .15, .07, .07, 1.0);
cairo_rotate (cr, -.5 * M_PI);
cairo_move_to (cr, 0, 0);
cairo_arc (cr, 0, 0, r *.85, -slit, slit);
cairo_line_to (cr, 0, 0);
cairo_close_path (cr);
cairo_fill (cr);
cairo_rotate (cr, 2. * M_PI / 3.);
cairo_move_to (cr, 0, 0);
cairo_arc (cr, 0, 0, r *.85, -slit, slit);
cairo_line_to (cr, 0, 0);
cairo_close_path (cr);
cairo_fill (cr);
cairo_rotate (cr, 2. * M_PI / 3.);
cairo_move_to (cr, 0, 0);
cairo_arc (cr, 0, 0, r *.85, -slit, slit);
cairo_line_to (cr, 0, 0);
cairo_close_path (cr);
cairo_fill (cr);
cairo_restore (cr);
cairo_arc (cr, 0, 0, r * .3, 0, 2 * M_PI);
if (state == Gtkmm2ext::ExplicitActive)
cairo_set_source_rgba (cr, .95, .1, .1, 1.);
else
cairo_set_source_rgba (cr, .95, .44, .44, 1.); // #f46f6f
cairo_fill (cr);
cairo_set_source_rgba (cr, .0, .0, .0, 1.0);
cairo_arc (cr, 0, 0, r *.15, 0, 2 * M_PI); // hole in the middle
cairo_fill (cr);
}
/*****************************************************************************
* Transport buttons, foreground is always white
*/
/** stop square box */
static void icon_transport_stop (cairo_t *cr, const int width, const int height)
{
const int wh = std::min (width, height);
cairo_rectangle (cr,
(width - wh) * .5 + wh * .25,
(height - wh) * .5 + wh * .25,
wh * .5, wh * .5);
VECTORICONSTROKEFILL(0.9); // small 'shine'
}
/** play triangle */
static void icon_transport_play (cairo_t *cr, const int width, const int height)
{
const int wh = std::min (width, height) * .5;
const double y = height * .5;
const double x = width - wh;
const double 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(0.9);
}
/** Midi Panic "!" */
static void icon_transport_panic (cairo_t *cr, const int width, const int height)
{
const int wh = std::min (width, height) * .1;
const double xc = width * .5;
const double yh = height;
cairo_rectangle (cr,
xc - wh, yh *.19,
wh * 2, yh *.41);
VECTORICONSTROKEFILL(0.9);
cairo_arc (cr, xc, yh *.75, wh, 0, 2 * M_PI);
VECTORICONSTROKEFILL(0.9);
}
/** various combinations of lines and triangles "|>|", ">|" "|>" */
static void icon_transport_ck (cairo_t *cr,
const enum Gtkmm2ext::ArdourIcon::Icon icon,
const int width, const int height)
{
// small play triangle
int wh = std::min (width, height);
const double y = height * .5;
const double x = width - wh * .5;
wh *= .18;
const double tri = ceil (.577 * wh * 2); // 1/sqrt(3)
const float ln = std::min (width, 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);
}
/** loop spiral */
static void icon_transport_loop (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double r = std::min (x, y);
cairo_arc (cr, x, y, r * .62, 0, 2 * M_PI);
cairo_arc_negative (cr, x, y, r * .35, 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 * .35, .72));
cairo_line_to (cr, ARCARROW(r * .15, .72));
cairo_line_to (cr, ARCARROW(r * .56, .60));
cairo_line_to (cr, ARCARROW(r * .75, .72));
cairo_line_to (cr, ARCARROW(r * .62, .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
}
/** de-construct thorwil's metronom */
static void icon_transport_metronom (cairo_t *cr, const int width, const int height)
{
const double x = width * .5;
const double y = height * .5;
const double wh = std::min (x, y);
const double h = wh * .85;
const double w = wh * .55;
const double lw = w * .34;
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);
// Pendulum
// 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);
}
/*****************************************************************************
* Zoom: In "+", Out "-" and Full "[]"
*/
static void icon_zoom (cairo_t *cr, const enum Gtkmm2ext::ArdourIcon::Icon icon, const int width, const int height, const uint32_t fg_color)
{
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_icon_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);
//ardour_icon_set_source_inv_rgba (cr, fg_color); // alpha
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);
ardour_icon_set_source_inv_rgba (cr, fg_color);
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);
}
}
/*****************************************************************************
* Misc buttons
*/
/** "close" - "X" , no outline */
static void icon_close_cross (cairo_t *cr, const int width, const int height, const uint32_t fg_color)
{
const double x = width * .5;
const double y = height * .5;
const double o = .5 + std::min (x, y) * .4;
ardour_icon_set_source_rgba (cr, fg_color);
cairo_set_line_width (cr, 1);
cairo_move_to (cr, x-o, y-o);
cairo_line_to (cr, x+o, y+o);
cairo_move_to (cr, x+o, y-o);
cairo_line_to (cr, x-o, y+o);
cairo_stroke (cr);
}
/** "<" */
static void icon_nudge_left (cairo_t *cr, const int width, const int height, const uint32_t fg_color)
{
const double x = width * .5;
const double y = height * .5;
const double wh = std::min (x, y);
const double tri_x = .3 * wh;
const double tri_y = .6 * wh;
cairo_move_to (cr, x + tri_x, y - tri_y);
cairo_line_to (cr, x - tri_x, y);
cairo_line_to (cr, x + tri_x, y + tri_y);
VECTORICONSTROKEOUTLINE(1.5, fg_color);
}
/** ">" */
static void icon_nudge_right (cairo_t *cr, const int width, const int height, const uint32_t fg_color)
{
const double x = width * .5;
const double y = height * .5;
const double wh = std::min (x, y);
const double tri_x = .3 * wh;
const double tri_y = .6 * wh;
cairo_move_to (cr, x - tri_x, y - tri_y);
cairo_line_to (cr, x + tri_x, y);
cairo_line_to (cr, x - tri_x, y + tri_y);
VECTORICONSTROKEOUTLINE(1.5, fg_color);
}
/** mixer strip narrow/wide */
static void icon_strip_width (cairo_t *cr, const int width, const int height, const uint32_t fg_color)
{
const double x0 = width * .2;
const double x1 = width * .8;
const double y0 = height * .25;
const double y1= height * .75;
const double ym= height * .5;
// arrow
const double xa0= height * .39;
const double xa1= height * .61;
const double ya0= height * .35;
const double ya1= height * .65;
ardour_icon_set_source_rgba (cr, fg_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);
}
/** 5-pin DIN MIDI socket */
static void icon_din_midi (cairo_t *cr, const int width, const int height, const uint32_t fg_color)
{
const double x = width * .5;
const double y = height * .5;
const double r = std::min (x, y) * .75;
ardour_icon_set_source_rgba (cr, fg_color);
cairo_set_line_width (cr, 1);
cairo_arc (cr, x, y, r, .57 * M_PI, 2.43 * 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 * .26, 1.05 * M_PI, 1.95 * M_PI);
cairo_stroke (cr);
}
/*****************************************************************************/
bool
Gtkmm2ext::ArdourIcon::render (cairo_t *cr,
const enum Gtkmm2ext::ArdourIcon::Icon icon,
const int width, const int height,
const Gtkmm2ext::ActiveState state,
const uint32_t fg_color)
{
bool rv = true;
cairo_save (cr);
if (width < 6 || height < 6) {
return false;
}
switch (icon) {
case TransportStop:
icon_transport_stop (cr, width, height);
break;
case TransportPlay:
icon_transport_play (cr, width, height);
break;
case TransportLoop:
icon_transport_loop (cr, width, height);
break;
case TransportMetronom:
icon_transport_metronom (cr, width, height);
break;
case TransportPanic:
icon_transport_panic (cr, width, height);
break;
case TransportStart: // no break
case TransportEnd: // no break
case TransportRange:
icon_transport_ck (cr, icon, width, height);
break;
case RecTapeMode:
icon_rec_tape (cr, width, height, state);
break;
case RecButton:
icon_rec_enable (cr, width, height, state);
break;
case CloseCross:
icon_close_cross (cr, width, height, fg_color);
break;
case StripWidth:
icon_strip_width (cr, width, height, fg_color);
break;
case DinMidi:
icon_din_midi (cr, width, height, fg_color);
break;
case NudgeLeft:
icon_nudge_left (cr, width, height, fg_color);
break;
case NudgeRight:
icon_nudge_right (cr, width, height, fg_color);
break;
case ZoomIn: // no break
case ZoomOut: // no break
case ZoomFull:
icon_zoom (cr, icon, width, height, fg_color);
break;
case TimeAxisShrink:
icon_tav_shrink (cr, width, height);
break;
case TimeAxisExpand:
icon_tav_expand (cr, width, height);
break;
case ToolRange:
icon_tool_range (cr, width, height);
break;
case ToolGrab:
icon_tool_grab (cr, width, height);
break;
case ToolCut:
icon_tool_cut (cr, width, height);
break;
case ToolStretch:
icon_tool_stretch (cr, width, height);
break;
case ToolAudition:
icon_tool_audition (cr, width, height);
break;
case ToolDraw:
icon_tool_draw (cr, width, height);
break;
case ToolContent:
icon_tool_content (cr, width, height);
break;
default:
rv = false;
break;
}
cairo_restore (cr);
return rv;
}
#undef VECTORICONSTROKEFILL
#undef VECTORICONSTROKEOUTLINE