903 lines
23 KiB
C++
903 lines
23 KiB
C++
/*
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Copyright (C) 2003-2006 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#include <iostream>
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#include <cmath>
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#include <algorithm>
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#include <cstring>
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#include <stdlib.h>
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#include <gdkmm/rectangle.h>
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#include <gtkmm2ext/fastmeter.h>
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#include <gtkmm2ext/utils.h>
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#define UINT_TO_RGB(u,r,g,b) { (*(r)) = ((u)>>16)&0xff; (*(g)) = ((u)>>8)&0xff; (*(b)) = (u)&0xff; }
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#define UINT_TO_RGBA(u,r,g,b,a) { UINT_TO_RGB(((u)>>8),r,g,b); (*(a)) = (u)&0xff; }
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using namespace Gtk;
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using namespace Gdk;
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using namespace Glib;
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using namespace Gtkmm2ext;
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using namespace std;
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int FastMeter::min_pattern_metric_size = 16;
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int FastMeter::max_pattern_metric_size = 1024;
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bool FastMeter::no_rgba_overlay = false;
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FastMeter::Pattern10Map FastMeter::vm_pattern_cache;
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FastMeter::PatternBgMap FastMeter::vb_pattern_cache;
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FastMeter::Pattern10Map FastMeter::hm_pattern_cache;
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FastMeter::PatternBgMap FastMeter::hb_pattern_cache;
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FastMeter::FastMeter (long hold, unsigned long dimen, Orientation o, int len,
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int clr0, int clr1, int clr2, int clr3,
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int clr4, int clr5, int clr6, int clr7,
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int clr8, int clr9,
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int bgc0, int bgc1,
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int bgh0, int bgh1,
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float stp0, float stp1,
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float stp2, float stp3,
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int styleflags
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)
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{
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orientation = o;
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hold_cnt = hold;
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hold_state = 0;
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bright_hold = false;
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current_peak = 0;
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current_level = 0;
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last_peak_rect.width = 0;
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last_peak_rect.height = 0;
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highlight = false;
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no_rgba_overlay = ! Glib::getenv("NO_METER_SHADE").empty();
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_clr[0] = clr0;
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_clr[1] = clr1;
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_clr[2] = clr2;
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_clr[3] = clr3;
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_clr[4] = clr4;
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_clr[5] = clr5;
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_clr[6] = clr6;
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_clr[7] = clr7;
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_clr[8] = clr8;
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_clr[9] = clr9;
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_bgc[0] = bgc0;
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_bgc[1] = bgc1;
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_bgh[0] = bgh0;
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_bgh[1] = bgh1;
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_stp[0] = stp0;
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_stp[1] = stp1;
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_stp[2] = stp2;
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_stp[3] = stp3;
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_styleflags = styleflags;
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set_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK);
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pixrect.x = 1;
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pixrect.y = 1;
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if (!len) {
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len = 250;
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}
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if (orientation == Vertical) {
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pixheight = len;
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pixwidth = dimen;
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fgpattern = request_vertical_meter(pixwidth + 2, pixheight + 2, _clr, _stp, _styleflags);
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bgpattern = request_vertical_background (pixwidth + 2, pixheight + 2, _bgc, false);
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} else {
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pixheight = dimen;
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pixwidth = len;
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fgpattern = request_horizontal_meter(pixwidth + 2, pixheight + 2, _clr, _stp, _styleflags);
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bgpattern = request_horizontal_background (pixwidth + 2, pixheight + 2, _bgc, false);
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}
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pixrect.width = pixwidth;
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pixrect.height = pixheight;
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request_width = pixrect.width + 2;
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request_height= pixrect.height + 2;
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queue_draw ();
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}
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FastMeter::~FastMeter ()
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{
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}
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Cairo::RefPtr<Cairo::Pattern>
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FastMeter::generate_meter_pattern (
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int width, int height, int *clr, float *stp, int styleflags, bool horiz)
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{
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guint8 r,g,b,a;
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double knee;
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const double soft = 3.0 / (double) height;
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const double offs = -1.0 / (double) height;
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cairo_pattern_t* pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, height);
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/*
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Cairo coordinate space goes downwards as y value goes up, so invert
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knee-based positions by using (1.0 - y)
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*/
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UINT_TO_RGBA (clr[9], &r, &g, &b, &a); // top/clip
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cairo_pattern_add_color_stop_rgb (pat, 0.0,
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r/255.0, g/255.0, b/255.0);
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knee = offs + stp[3] / 115.0f; // -0dB
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UINT_TO_RGBA (clr[8], &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
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r/255.0, g/255.0, b/255.0);
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UINT_TO_RGBA (clr[7], &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
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r/255.0, g/255.0, b/255.0);
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knee = offs + stp[2]/ 115.0f; // -3dB || -2dB
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UINT_TO_RGBA (clr[6], &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
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r/255.0, g/255.0, b/255.0);
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UINT_TO_RGBA (clr[5], &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
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r/255.0, g/255.0, b/255.0);
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knee = offs + stp[1] / 115.0f; // -9dB
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UINT_TO_RGBA (clr[4], &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
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r/255.0, g/255.0, b/255.0);
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UINT_TO_RGBA (clr[3], &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
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r/255.0, g/255.0, b/255.0);
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knee = offs + stp[0] / 115.0f; // -18dB
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UINT_TO_RGBA (clr[2], &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
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r/255.0, g/255.0, b/255.0);
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UINT_TO_RGBA (clr[1], &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
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r/255.0, g/255.0, b/255.0);
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UINT_TO_RGBA (clr[0], &r, &g, &b, &a); // bottom
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cairo_pattern_add_color_stop_rgb (pat, 1.0,
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r/255.0, g/255.0, b/255.0);
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if ((styleflags & 1) && !no_rgba_overlay) {
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cairo_pattern_t* shade_pattern = cairo_pattern_create_linear (0.0, 0.0, width, 0.0);
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cairo_pattern_add_color_stop_rgba (shade_pattern, 0, 0.0, 0.0, 0.0, 0.15);
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cairo_pattern_add_color_stop_rgba (shade_pattern, 0.4, 1.0, 1.0, 1.0, 0.05);
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cairo_pattern_add_color_stop_rgba (shade_pattern, 1, 0.0, 0.0, 0.0, 0.25);
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cairo_surface_t* surface;
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cairo_t* tc = 0;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
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tc = cairo_create (surface);
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cairo_set_source (tc, pat);
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cairo_rectangle (tc, 0, 0, width, height);
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cairo_fill (tc);
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cairo_pattern_destroy (pat);
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cairo_set_source (tc, shade_pattern);
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cairo_rectangle (tc, 0, 0, width, height);
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cairo_fill (tc);
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cairo_pattern_destroy (shade_pattern);
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if (styleflags & 2) { // LED stripes
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cairo_save (tc);
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cairo_set_line_width(tc, 1.0);
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cairo_set_source_rgba(tc, .0, .0, .0, 0.4);
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//cairo_set_operator (tc, CAIRO_OPERATOR_SOURCE);
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for (float y=0.5; y < height; y+= 2.0) {
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cairo_move_to(tc, 0, y);
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cairo_line_to(tc, width, y);
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cairo_stroke (tc);
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}
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cairo_restore (tc);
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}
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pat = cairo_pattern_create_for_surface (surface);
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cairo_destroy (tc);
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cairo_surface_destroy (surface);
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}
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if (horiz) {
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cairo_surface_t* surface;
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cairo_t* tc = 0;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, height, width);
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tc = cairo_create (surface);
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cairo_matrix_t m;
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cairo_matrix_init_rotate (&m, -M_PI/2.0);
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cairo_matrix_translate (&m, -height, 0);
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cairo_pattern_set_matrix (pat, &m);
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cairo_set_source (tc, pat);
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cairo_rectangle (tc, 0, 0, height, width);
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cairo_fill (tc);
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cairo_pattern_destroy (pat);
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pat = cairo_pattern_create_for_surface (surface);
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cairo_destroy (tc);
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cairo_surface_destroy (surface);
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}
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Cairo::RefPtr<Cairo::Pattern> p (new Cairo::Pattern (pat, false));
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return p;
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}
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Cairo::RefPtr<Cairo::Pattern>
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FastMeter::generate_meter_background (
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int width, int height, int *clr, bool shade, bool horiz)
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{
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guint8 r0,g0,b0,r1,g1,b1,a;
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cairo_pattern_t* pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, height);
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UINT_TO_RGBA (clr[0], &r0, &g0, &b0, &a);
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UINT_TO_RGBA (clr[1], &r1, &g1, &b1, &a);
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cairo_pattern_add_color_stop_rgb (pat, 0.0,
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r1/255.0, g1/255.0, b1/255.0);
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cairo_pattern_add_color_stop_rgb (pat, 1.0,
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r0/255.0, g0/255.0, b0/255.0);
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if (shade && !no_rgba_overlay) {
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cairo_pattern_t* shade_pattern = cairo_pattern_create_linear (0.0, 0.0, width, 0.0);
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cairo_pattern_add_color_stop_rgba (shade_pattern, 0.0, 1.0, 1.0, 1.0, 0.15);
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cairo_pattern_add_color_stop_rgba (shade_pattern, 0.6, 0.0, 0.0, 0.0, 0.10);
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cairo_pattern_add_color_stop_rgba (shade_pattern, 1.0, 1.0, 1.0, 1.0, 0.20);
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cairo_surface_t* surface;
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cairo_t* tc = 0;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
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tc = cairo_create (surface);
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cairo_set_source (tc, pat);
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cairo_rectangle (tc, 0, 0, width, height);
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cairo_fill (tc);
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cairo_set_source (tc, shade_pattern);
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cairo_rectangle (tc, 0, 0, width, height);
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cairo_fill (tc);
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cairo_pattern_destroy (pat);
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cairo_pattern_destroy (shade_pattern);
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pat = cairo_pattern_create_for_surface (surface);
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cairo_destroy (tc);
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cairo_surface_destroy (surface);
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}
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if (horiz) {
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cairo_surface_t* surface;
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cairo_t* tc = 0;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, height, width);
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tc = cairo_create (surface);
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cairo_matrix_t m;
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cairo_matrix_init_rotate (&m, -M_PI/2.0);
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cairo_matrix_translate (&m, -height, 0);
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cairo_pattern_set_matrix (pat, &m);
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cairo_set_source (tc, pat);
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cairo_rectangle (tc, 0, 0, height, width);
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cairo_fill (tc);
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cairo_pattern_destroy (pat);
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pat = cairo_pattern_create_for_surface (surface);
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cairo_destroy (tc);
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cairo_surface_destroy (surface);
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}
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Cairo::RefPtr<Cairo::Pattern> p (new Cairo::Pattern (pat, false));
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return p;
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}
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Cairo::RefPtr<Cairo::Pattern>
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FastMeter::request_vertical_meter(
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int width, int height, int *clr, float *stp, int styleflags)
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{
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height = max(height, min_pattern_metric_size);
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height = min(height, max_pattern_metric_size);
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const Pattern10MapKey key (width, height,
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stp[0], stp[1], stp[2], stp[3],
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clr[0], clr[1], clr[2], clr[3],
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clr[4], clr[5], clr[6], clr[7],
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clr[8], clr[9], styleflags);
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Pattern10Map::iterator i;
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if ((i = vm_pattern_cache.find (key)) != vm_pattern_cache.end()) {
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return i->second;
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}
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// TODO flush pattern cache if it gets too large
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Cairo::RefPtr<Cairo::Pattern> p = generate_meter_pattern (
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width, height, clr, stp, styleflags, false);
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vm_pattern_cache[key] = p;
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return p;
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}
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Cairo::RefPtr<Cairo::Pattern>
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FastMeter::request_vertical_background(
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int width, int height, int *bgc, bool shade)
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{
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height = max(height, min_pattern_metric_size);
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height = min(height, max_pattern_metric_size);
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height += 2;
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const PatternBgMapKey key (width, height, bgc[0], bgc[1], shade);
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PatternBgMap::iterator i;
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if ((i = vb_pattern_cache.find (key)) != vb_pattern_cache.end()) {
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return i->second;
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}
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// TODO flush pattern cache if it gets too large
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Cairo::RefPtr<Cairo::Pattern> p = generate_meter_background (
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width, height, bgc, shade, false);
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vb_pattern_cache[key] = p;
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return p;
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}
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Cairo::RefPtr<Cairo::Pattern>
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FastMeter::request_horizontal_meter(
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int width, int height, int *clr, float *stp, int styleflags)
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{
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width = max(width, min_pattern_metric_size);
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width = min(width, max_pattern_metric_size);
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const Pattern10MapKey key (width, height,
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stp[0], stp[1], stp[2], stp[3],
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clr[0], clr[1], clr[2], clr[3],
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clr[4], clr[5], clr[6], clr[7],
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clr[8], clr[9], styleflags);
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Pattern10Map::iterator i;
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if ((i = hm_pattern_cache.find (key)) != hm_pattern_cache.end()) {
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return i->second;
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}
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// TODO flush pattern cache if it gets too large
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Cairo::RefPtr<Cairo::Pattern> p = generate_meter_pattern (
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height, width, clr, stp, styleflags, true);
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hm_pattern_cache[key] = p;
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return p;
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}
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Cairo::RefPtr<Cairo::Pattern>
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FastMeter::request_horizontal_background(
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int width, int height, int *bgc, bool shade)
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{
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width = max(width, min_pattern_metric_size);
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width = min(width, max_pattern_metric_size);
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width += 2;
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const PatternBgMapKey key (width, height, bgc[0], bgc[1], shade);
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PatternBgMap::iterator i;
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if ((i = hb_pattern_cache.find (key)) != hb_pattern_cache.end()) {
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return i->second;
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}
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// TODO flush pattern cache if it gets too large
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Cairo::RefPtr<Cairo::Pattern> p = generate_meter_background (
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height, width, bgc, shade, true);
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hb_pattern_cache[key] = p;
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return p;
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}
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void
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FastMeter::set_hold_count (long val)
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{
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if (val < 1) {
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val = 1;
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}
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hold_cnt = val;
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hold_state = 0;
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current_peak = 0;
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queue_draw ();
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}
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void
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FastMeter::on_size_request (GtkRequisition* req)
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{
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if (orientation == Vertical) {
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vertical_size_request (req);
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} else {
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horizontal_size_request (req);
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}
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}
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void
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FastMeter::vertical_size_request (GtkRequisition* req)
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{
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req->height = request_height;
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req->height = max(req->height, min_pattern_metric_size);
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req->height = min(req->height, max_pattern_metric_size);
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req->height += 2;
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req->width = request_width;
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}
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void
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FastMeter::horizontal_size_request (GtkRequisition* req)
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{
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req->width = request_width;
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req->width = max(req->width, min_pattern_metric_size);
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req->width = min(req->width, max_pattern_metric_size);
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req->width += 2;
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req->height = request_height;
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}
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void
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FastMeter::on_size_allocate (Gtk::Allocation &alloc)
|
|
{
|
|
if (orientation == Vertical) {
|
|
vertical_size_allocate (alloc);
|
|
} else {
|
|
horizontal_size_allocate (alloc);
|
|
}
|
|
queue_draw ();
|
|
}
|
|
|
|
void
|
|
FastMeter::vertical_size_allocate (Gtk::Allocation &alloc)
|
|
{
|
|
if (alloc.get_width() != request_width) {
|
|
alloc.set_width (request_width);
|
|
}
|
|
|
|
int h = alloc.get_height();
|
|
h = max (h, min_pattern_metric_size + 2);
|
|
h = min (h, max_pattern_metric_size + 2);
|
|
|
|
if (h != alloc.get_height()) {
|
|
alloc.set_height (h);
|
|
}
|
|
|
|
if (pixheight != h) {
|
|
fgpattern = request_vertical_meter (request_width, h, _clr, _stp, _styleflags);
|
|
bgpattern = request_vertical_background (request_width, h, highlight ? _bgh : _bgc, highlight);
|
|
pixheight = h - 2;
|
|
pixwidth = request_width - 2;
|
|
}
|
|
|
|
DrawingArea::on_size_allocate (alloc);
|
|
}
|
|
|
|
void
|
|
FastMeter::horizontal_size_allocate (Gtk::Allocation &alloc)
|
|
{
|
|
if (alloc.get_height() != request_height) {
|
|
alloc.set_height (request_height);
|
|
}
|
|
|
|
int w = alloc.get_width();
|
|
w = max (w, min_pattern_metric_size + 2);
|
|
w = min (w, max_pattern_metric_size + 2);
|
|
|
|
if (w != alloc.get_width()) {
|
|
alloc.set_width (w);
|
|
}
|
|
|
|
if (pixwidth != w) {
|
|
fgpattern = request_horizontal_meter (w, request_height, _clr, _stp, _styleflags);
|
|
bgpattern = request_horizontal_background (w, request_height, highlight ? _bgh : _bgc, highlight);
|
|
pixwidth = w - 2;
|
|
pixheight = request_height - 2;
|
|
}
|
|
|
|
DrawingArea::on_size_allocate (alloc);
|
|
}
|
|
|
|
bool
|
|
FastMeter::on_expose_event (GdkEventExpose* ev)
|
|
{
|
|
if (orientation == Vertical) {
|
|
return vertical_expose (ev);
|
|
} else {
|
|
return horizontal_expose (ev);
|
|
}
|
|
}
|
|
|
|
bool
|
|
FastMeter::vertical_expose (GdkEventExpose* ev)
|
|
{
|
|
Glib::RefPtr<Gdk::Window> win = get_window ();
|
|
gint top_of_meter;
|
|
GdkRectangle intersection;
|
|
GdkRectangle background;
|
|
|
|
cairo_t* cr = gdk_cairo_create (get_window ()->gobj());
|
|
|
|
cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
|
|
cairo_clip (cr);
|
|
|
|
cairo_set_source_rgb (cr, 0, 0, 0); // black
|
|
rounded_rectangle (cr, 0, 0, pixwidth + 2, pixheight + 2, 2);
|
|
cairo_stroke (cr);
|
|
|
|
top_of_meter = (gint) floor (pixheight * current_level);
|
|
|
|
/* reset the height & origin of the rect that needs to show the pixbuf
|
|
*/
|
|
|
|
pixrect.height = top_of_meter;
|
|
pixrect.y = 1 + pixheight - top_of_meter;
|
|
|
|
background.x = 1;
|
|
background.y = 1;
|
|
background.width = pixrect.width;
|
|
background.height = pixheight - top_of_meter;
|
|
|
|
if (gdk_rectangle_intersect (&background, &ev->area, &intersection)) {
|
|
cairo_set_source (cr, bgpattern->cobj());
|
|
cairo_rectangle (cr, intersection.x, intersection.y, intersection.width, intersection.height);
|
|
cairo_fill (cr);
|
|
}
|
|
|
|
if (gdk_rectangle_intersect (&pixrect, &ev->area, &intersection)) {
|
|
// draw the part of the meter image that we need. the area we draw is bounded "in reverse" (top->bottom)
|
|
cairo_set_source (cr, fgpattern->cobj());
|
|
cairo_rectangle (cr, intersection.x, intersection.y, intersection.width, intersection.height);
|
|
cairo_fill (cr);
|
|
}
|
|
|
|
// draw peak bar
|
|
|
|
if (hold_state) {
|
|
last_peak_rect.x = 1;
|
|
last_peak_rect.width = pixwidth;
|
|
last_peak_rect.y = max(1, 1 + pixheight - (gint) floor (pixheight * current_peak));
|
|
if (bright_hold || (_styleflags & 2)) {
|
|
last_peak_rect.height = max(0, min(3, pixheight - last_peak_rect.y - 1 ));
|
|
} else {
|
|
last_peak_rect.height = max(0, min(2, pixheight - last_peak_rect.y - 1 ));
|
|
}
|
|
|
|
cairo_set_source (cr, fgpattern->cobj());
|
|
cairo_rectangle (cr, last_peak_rect.x, last_peak_rect.y, last_peak_rect.width, last_peak_rect.height);
|
|
|
|
if (bright_hold && !no_rgba_overlay) {
|
|
cairo_fill_preserve (cr);
|
|
cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.3);
|
|
}
|
|
cairo_fill (cr);
|
|
|
|
} else {
|
|
last_peak_rect.width = 0;
|
|
last_peak_rect.height = 0;
|
|
}
|
|
|
|
cairo_destroy (cr);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bool
|
|
FastMeter::horizontal_expose (GdkEventExpose* ev)
|
|
{
|
|
Glib::RefPtr<Gdk::Window> win = get_window ();
|
|
gint right_of_meter;
|
|
GdkRectangle intersection;
|
|
GdkRectangle background;
|
|
|
|
cairo_t* cr = gdk_cairo_create (get_window ()->gobj());
|
|
|
|
cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
|
|
cairo_clip (cr);
|
|
|
|
cairo_set_source_rgb (cr, 0, 0, 0); // black
|
|
rounded_rectangle (cr, 0, 0, pixwidth + 2, pixheight + 2, 2);
|
|
cairo_stroke (cr);
|
|
|
|
right_of_meter = (gint) floor (pixwidth * current_level);
|
|
|
|
/* reset the height & origin of the rect that needs to show the pixbuf
|
|
*/
|
|
|
|
pixrect.width = right_of_meter;
|
|
|
|
background.x = 1 + right_of_meter;
|
|
background.y = 1;
|
|
background.width = pixwidth - right_of_meter;
|
|
background.height = pixheight;
|
|
|
|
if (gdk_rectangle_intersect (&background, &ev->area, &intersection)) {
|
|
cairo_set_source (cr, bgpattern->cobj());
|
|
cairo_rectangle (cr, intersection.x, intersection.y, intersection.width, intersection.height);
|
|
cairo_fill (cr);
|
|
}
|
|
|
|
if (gdk_rectangle_intersect (&pixrect, &ev->area, &intersection)) {
|
|
cairo_set_source (cr, fgpattern->cobj());
|
|
cairo_rectangle (cr, intersection.x, intersection.y, intersection.width, intersection.height);
|
|
cairo_fill (cr);
|
|
}
|
|
|
|
// draw peak bar
|
|
|
|
if (hold_state) {
|
|
last_peak_rect.y = 1;
|
|
last_peak_rect.height = pixheight;
|
|
const int xpos = floor (pixwidth * current_peak);
|
|
if (bright_hold || (_styleflags & 2)) {
|
|
last_peak_rect.width = min(3, xpos );
|
|
} else {
|
|
last_peak_rect.width = min(2, xpos );
|
|
}
|
|
last_peak_rect.x = 1 + max(0, xpos - last_peak_rect.width);
|
|
|
|
cairo_set_source (cr, fgpattern->cobj());
|
|
cairo_rectangle (cr, last_peak_rect.x, last_peak_rect.y, last_peak_rect.width, last_peak_rect.height);
|
|
|
|
if (bright_hold && !no_rgba_overlay) {
|
|
cairo_fill_preserve (cr);
|
|
cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.3);
|
|
}
|
|
cairo_fill (cr);
|
|
|
|
} else {
|
|
last_peak_rect.width = 0;
|
|
last_peak_rect.height = 0;
|
|
}
|
|
|
|
cairo_destroy (cr);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
FastMeter::set (float lvl, float peak)
|
|
{
|
|
float old_level = current_level;
|
|
float old_peak = current_peak;
|
|
|
|
if (peak == -1) {
|
|
if (lvl >= current_peak) {
|
|
current_peak = lvl;
|
|
hold_state = hold_cnt;
|
|
}
|
|
|
|
if (hold_state > 0) {
|
|
if (--hold_state == 0) {
|
|
current_peak = lvl;
|
|
}
|
|
}
|
|
bright_hold = false;
|
|
} else {
|
|
current_peak = peak;
|
|
hold_state = 1;
|
|
bright_hold = true;
|
|
}
|
|
|
|
current_level = lvl;
|
|
|
|
if (current_level == old_level && current_peak == old_peak && (hold_state == 0 || peak != -1)) {
|
|
return;
|
|
}
|
|
|
|
Glib::RefPtr<Gdk::Window> win;
|
|
|
|
if ((win = get_window()) == 0) {
|
|
queue_draw ();
|
|
return;
|
|
}
|
|
|
|
if (orientation == Vertical) {
|
|
queue_vertical_redraw (win, old_level);
|
|
} else {
|
|
queue_horizontal_redraw (win, old_level);
|
|
}
|
|
}
|
|
|
|
void
|
|
FastMeter::queue_vertical_redraw (const Glib::RefPtr<Gdk::Window>& win, float old_level)
|
|
{
|
|
GdkRectangle rect;
|
|
|
|
gint new_top = (gint) floor (pixheight * current_level);
|
|
|
|
rect.x = 1;
|
|
rect.width = pixwidth;
|
|
rect.height = new_top;
|
|
rect.y = 1 + pixheight - new_top;
|
|
|
|
if (current_level > old_level) {
|
|
/* colored/pixbuf got larger, just draw the new section */
|
|
/* rect.y stays where it is because of X coordinates */
|
|
/* height of invalidated area is between new.y (smaller) and old.y
|
|
(larger).
|
|
X coordinates just make my brain hurt.
|
|
*/
|
|
rect.height = pixrect.y - rect.y;
|
|
} else {
|
|
/* it got smaller, compute the difference */
|
|
/* rect.y becomes old.y (the smaller value) */
|
|
rect.y = pixrect.y;
|
|
/* rect.height is the old.y (smaller) minus the new.y (larger)
|
|
*/
|
|
rect.height = pixrect.height - rect.height;
|
|
}
|
|
|
|
GdkRegion* region = 0;
|
|
bool queue = false;
|
|
|
|
if (rect.height != 0) {
|
|
|
|
/* ok, first region to draw ... */
|
|
|
|
region = gdk_region_rectangle (&rect);
|
|
queue = true;
|
|
}
|
|
|
|
/* redraw the last place where the last peak hold bar was;
|
|
the next expose will draw the new one whether its part of
|
|
expose region or not.
|
|
*/
|
|
|
|
if (last_peak_rect.width * last_peak_rect.height != 0) {
|
|
if (!queue) {
|
|
region = gdk_region_new ();
|
|
queue = true;
|
|
}
|
|
gdk_region_union_with_rect (region, &last_peak_rect);
|
|
}
|
|
|
|
if (hold_state && current_peak > 0) {
|
|
if (!queue) {
|
|
region = gdk_region_new ();
|
|
queue = true;
|
|
}
|
|
rect.x = 1;
|
|
rect.y = max(1, 1 + pixheight - (gint) floor (pixheight * current_peak));
|
|
if (bright_hold || (_styleflags & 2)) {
|
|
rect.height = max(0, min(3, pixheight - last_peak_rect.y -1 ));
|
|
} else {
|
|
rect.height = max(0, min(2, pixheight - last_peak_rect.y -1 ));
|
|
}
|
|
rect.width = pixwidth;
|
|
gdk_region_union_with_rect (region, &rect);
|
|
}
|
|
|
|
if (queue) {
|
|
gdk_window_invalidate_region (win->gobj(), region, true);
|
|
}
|
|
if (region) {
|
|
gdk_region_destroy(region);
|
|
region = 0;
|
|
}
|
|
}
|
|
|
|
void
|
|
FastMeter::queue_horizontal_redraw (const Glib::RefPtr<Gdk::Window>& win, float old_level)
|
|
{
|
|
GdkRectangle rect;
|
|
|
|
gint new_right = (gint) floor (pixwidth * current_level);
|
|
|
|
rect.height = pixheight;
|
|
rect.y = 1;
|
|
|
|
if (current_level > old_level) {
|
|
rect.x = 1 + pixrect.width;
|
|
/* colored/pixbuf got larger, just draw the new section */
|
|
rect.width = new_right - pixrect.width;
|
|
} else {
|
|
/* it got smaller, compute the difference */
|
|
rect.x = 1 + new_right;
|
|
/* rect.height is the old.x (smaller) minus the new.x (larger) */
|
|
rect.width = pixrect.width - new_right;
|
|
}
|
|
|
|
GdkRegion* region = 0;
|
|
bool queue = false;
|
|
|
|
if (rect.height != 0) {
|
|
|
|
/* ok, first region to draw ... */
|
|
|
|
region = gdk_region_rectangle (&rect);
|
|
queue = true;
|
|
}
|
|
|
|
/* redraw the last place where the last peak hold bar was;
|
|
the next expose will draw the new one whether its part of
|
|
expose region or not.
|
|
*/
|
|
|
|
if (last_peak_rect.width * last_peak_rect.height != 0) {
|
|
if (!queue) {
|
|
region = gdk_region_new ();
|
|
queue = true;
|
|
}
|
|
gdk_region_union_with_rect (region, &last_peak_rect);
|
|
}
|
|
|
|
if (hold_state && current_peak > 0) {
|
|
if (!queue) {
|
|
region = gdk_region_new ();
|
|
queue = true;
|
|
}
|
|
rect.y = 1;
|
|
rect.height = pixheight;
|
|
const int xpos = floor (pixwidth * current_peak);
|
|
if (bright_hold || (_styleflags & 2)) {
|
|
rect.width = min(3, xpos);
|
|
} else {
|
|
rect.width = min(2, xpos);
|
|
}
|
|
rect.x = 1 + max(0, xpos - rect.width);
|
|
gdk_region_union_with_rect (region, &rect);
|
|
}
|
|
|
|
if (queue) {
|
|
gdk_window_invalidate_region (win->gobj(), region, true);
|
|
}
|
|
if (region) {
|
|
gdk_region_destroy(region);
|
|
region = 0;
|
|
}
|
|
}
|
|
|
|
void
|
|
FastMeter::set_highlight (bool onoff)
|
|
{
|
|
if (highlight == onoff) {
|
|
return;
|
|
}
|
|
highlight = onoff;
|
|
if (orientation == Vertical) {
|
|
bgpattern = request_vertical_background (pixwidth + 2, pixheight + 2, highlight ? _bgh : _bgc, highlight);
|
|
} else {
|
|
bgpattern = request_horizontal_background (pixwidth + 2, pixheight + 2, highlight ? _bgh : _bgc, highlight);
|
|
}
|
|
queue_draw ();
|
|
}
|
|
|
|
void
|
|
FastMeter::clear ()
|
|
{
|
|
current_level = 0;
|
|
current_peak = 0;
|
|
hold_state = 0;
|
|
queue_draw ();
|
|
}
|