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authorRobin Gareus <robin@gareus.org>2017-07-16 22:13:46 +0200
committerRobin Gareus <robin@gareus.org>2017-07-17 21:06:04 +0200
commitf6e182b937efda6ed0ba50dbc02af98524beb61c (patch)
treec5304cbfc96a82f00582ef038e2a9223881a7489 /libs/gtkmm2ext/fastmeter.cc
parentb6e4dfe37be32009ce7ffc58d4a6139923c12981 (diff)
Move Gtkmm2ext widgets into libwidget
Diffstat (limited to 'libs/gtkmm2ext/fastmeter.cc')
-rw-r--r--libs/gtkmm2ext/fastmeter.cc920
1 files changed, 0 insertions, 920 deletions
diff --git a/libs/gtkmm2ext/fastmeter.cc b/libs/gtkmm2ext/fastmeter.cc
deleted file mode 100644
index c2275eab9f..0000000000
--- a/libs/gtkmm2ext/fastmeter.cc
+++ /dev/null
@@ -1,920 +0,0 @@
-/*
- Copyright (C) 2003-2006 Paul Davis
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
-*/
-
-#include <iostream>
-#include <cmath>
-#include <algorithm>
-#include <cstring>
-
-#include <stdlib.h>
-
-#include <glibmm.h>
-#include <gdkmm.h>
-#include <gdkmm/rectangle.h>
-#include <gtkmm2ext/fastmeter.h>
-#include <gtkmm2ext/utils.h>
-
-#define UINT_TO_RGB(u,r,g,b) { (*(r)) = ((u)>>16)&0xff; (*(g)) = ((u)>>8)&0xff; (*(b)) = (u)&0xff; }
-#define UINT_TO_RGBA(u,r,g,b,a) { UINT_TO_RGB(((u)>>8),r,g,b); (*(a)) = (u)&0xff; }
-
-using namespace Gtk;
-using namespace Glib;
-using namespace Gtkmm2ext;
-using namespace std;
-
-int FastMeter::min_pattern_metric_size = 16;
-int FastMeter::max_pattern_metric_size = 1024;
-bool FastMeter::no_rgba_overlay = false;
-
-FastMeter::Pattern10Map FastMeter::vm_pattern_cache;
-FastMeter::PatternBgMap FastMeter::vb_pattern_cache;
-
-FastMeter::Pattern10Map FastMeter::hm_pattern_cache;
-FastMeter::PatternBgMap FastMeter::hb_pattern_cache;
-
-FastMeter::FastMeter (long hold, unsigned long dimen, Orientation o, int len,
- int clr0, int clr1, int clr2, int clr3,
- int clr4, int clr5, int clr6, int clr7,
- int clr8, int clr9,
- int bgc0, int bgc1,
- int bgh0, int bgh1,
- float stp0, float stp1,
- float stp2, float stp3,
- int styleflags
- )
- : pixheight(0)
- , pixwidth(0)
- , _styleflags(styleflags)
- , orientation(o)
- , hold_cnt(hold)
- , hold_state(0)
- , bright_hold(false)
- , current_level(0)
- , current_peak(0)
- , highlight(false)
-{
- last_peak_rect.width = 0;
- last_peak_rect.height = 0;
- last_peak_rect.x = 0;
- last_peak_rect.y = 0;
-
- no_rgba_overlay = ! Glib::getenv("NO_METER_SHADE").empty();
-
- _clr[0] = clr0;
- _clr[1] = clr1;
- _clr[2] = clr2;
- _clr[3] = clr3;
- _clr[4] = clr4;
- _clr[5] = clr5;
- _clr[6] = clr6;
- _clr[7] = clr7;
- _clr[8] = clr8;
- _clr[9] = clr9;
-
- _bgc[0] = bgc0;
- _bgc[1] = bgc1;
-
- _bgh[0] = bgh0;
- _bgh[1] = bgh1;
-
- _stp[0] = stp0;
- _stp[1] = stp1;
- _stp[2] = stp2;
- _stp[3] = stp3;
-
- set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
-
- pixrect.x = 1;
- pixrect.y = 1;
-
- if (!len) {
- len = 250;
- }
- if (orientation == Vertical) {
- pixheight = len;
- pixwidth = dimen;
- fgpattern = request_vertical_meter(pixwidth + 2, pixheight + 2, _clr, _stp, _styleflags);
- bgpattern = request_vertical_background (pixwidth + 2, pixheight + 2, _bgc, false);
-
- } else {
- pixheight = dimen;
- pixwidth = len;
- fgpattern = request_horizontal_meter(pixwidth + 2, pixheight + 2, _clr, _stp, _styleflags);
- bgpattern = request_horizontal_background (pixwidth + 2, pixheight + 2, _bgc, false);
- }
-
- pixrect.width = pixwidth;
- pixrect.height = pixheight;
-
- request_width = pixrect.width + 2;
- request_height= pixrect.height + 2;
-
- clear ();
-}
-
-FastMeter::~FastMeter ()
-{
-}
-
-void
-FastMeter::flush_pattern_cache () {
- hb_pattern_cache.clear();
- hm_pattern_cache.clear();
- vb_pattern_cache.clear();
- vm_pattern_cache.clear();
-}
-
-Cairo::RefPtr<Cairo::Pattern>
-FastMeter::generate_meter_pattern (
- int width, int height, int *clr, float *stp, int styleflags, bool horiz)
-{
- guint8 r,g,b,a;
- double knee;
- const double soft = 3.0 / (double) height;
- const double offs = -1.0 / (double) height;
-
- cairo_pattern_t* pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, height);
-
- /*
- Cairo coordinate space goes downwards as y value goes up, so invert
- knee-based positions by using (1.0 - y)
- */
-
- UINT_TO_RGBA (clr[9], &r, &g, &b, &a); // top/clip
- cairo_pattern_add_color_stop_rgb (pat, 0.0,
- r/255.0, g/255.0, b/255.0);
-
- knee = offs + stp[3] / 115.0f; // -0dB
-
- UINT_TO_RGBA (clr[8], &r, &g, &b, &a);
- cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
- r/255.0, g/255.0, b/255.0);
-
- UINT_TO_RGBA (clr[7], &r, &g, &b, &a);
- cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
- r/255.0, g/255.0, b/255.0);
-
- knee = offs + stp[2]/ 115.0f; // -3dB || -2dB
-
- UINT_TO_RGBA (clr[6], &r, &g, &b, &a);
- cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
- r/255.0, g/255.0, b/255.0);
-
- UINT_TO_RGBA (clr[5], &r, &g, &b, &a);
- cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
- r/255.0, g/255.0, b/255.0);
-
- knee = offs + stp[1] / 115.0f; // -9dB
-
- UINT_TO_RGBA (clr[4], &r, &g, &b, &a);
- cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
- r/255.0, g/255.0, b/255.0);
-
- UINT_TO_RGBA (clr[3], &r, &g, &b, &a);
- cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
- r/255.0, g/255.0, b/255.0);
-
- knee = offs + stp[0] / 115.0f; // -18dB
-
- UINT_TO_RGBA (clr[2], &r, &g, &b, &a);
- cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
- r/255.0, g/255.0, b/255.0);
-
- UINT_TO_RGBA (clr[1], &r, &g, &b, &a);
- cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
- r/255.0, g/255.0, b/255.0);
-
- UINT_TO_RGBA (clr[0], &r, &g, &b, &a); // bottom
- cairo_pattern_add_color_stop_rgb (pat, 1.0,
- r/255.0, g/255.0, b/255.0);
-
- if ((styleflags & 1) && !no_rgba_overlay) {
- cairo_pattern_t* shade_pattern = cairo_pattern_create_linear (0.0, 0.0, width, 0.0);
- cairo_pattern_add_color_stop_rgba (shade_pattern, 0, 0.0, 0.0, 0.0, 0.15);
- cairo_pattern_add_color_stop_rgba (shade_pattern, 0.4, 1.0, 1.0, 1.0, 0.05);
- cairo_pattern_add_color_stop_rgba (shade_pattern, 1, 0.0, 0.0, 0.0, 0.25);
-
- cairo_surface_t* surface;
- cairo_t* tc = 0;
- surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
- tc = cairo_create (surface);
- cairo_set_source (tc, pat);
- cairo_rectangle (tc, 0, 0, width, height);
- cairo_fill (tc);
- cairo_pattern_destroy (pat);
-
- cairo_set_source (tc, shade_pattern);
- cairo_rectangle (tc, 0, 0, width, height);
- cairo_fill (tc);
- cairo_pattern_destroy (shade_pattern);
-
- if (styleflags & 2) { // LED stripes
- cairo_save (tc);
- cairo_set_line_width(tc, 1.0);
- cairo_set_source_rgba(tc, .0, .0, .0, 0.4);
- //cairo_set_operator (tc, CAIRO_OPERATOR_SOURCE);
- for (int i = 0; float y = 0.5 + i * 2.0; ++i) {
- if (y >= height) {
- break;
- }
- cairo_move_to(tc, 0, y);
- cairo_line_to(tc, width, y);
- cairo_stroke (tc);
- }
- cairo_restore (tc);
- }
-
- pat = cairo_pattern_create_for_surface (surface);
- cairo_destroy (tc);
- cairo_surface_destroy (surface);
- }
-
- if (horiz) {
- cairo_surface_t* surface;
- cairo_t* tc = 0;
- surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, height, width);
- tc = cairo_create (surface);
-
- cairo_matrix_t m;
- cairo_matrix_init_rotate (&m, -M_PI/2.0);
- cairo_matrix_translate (&m, -height, 0);
- cairo_pattern_set_matrix (pat, &m);
- cairo_set_source (tc, pat);
- cairo_rectangle (tc, 0, 0, height, width);
- cairo_fill (tc);
- cairo_pattern_destroy (pat);
- pat = cairo_pattern_create_for_surface (surface);
- cairo_destroy (tc);
- cairo_surface_destroy (surface);
- }
- Cairo::RefPtr<Cairo::Pattern> p (new Cairo::Pattern (pat, false));
-
- return p;
-}
-
-
-Cairo::RefPtr<Cairo::Pattern>
-FastMeter::generate_meter_background (
- int width, int height, int *clr, bool shade, bool horiz)
-{
- guint8 r0,g0,b0,r1,g1,b1,a;
-
- cairo_pattern_t* pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, height);
-
- UINT_TO_RGBA (clr[0], &r0, &g0, &b0, &a);
- UINT_TO_RGBA (clr[1], &r1, &g1, &b1, &a);
-
- cairo_pattern_add_color_stop_rgb (pat, 0.0,
- r1/255.0, g1/255.0, b1/255.0);
-
- cairo_pattern_add_color_stop_rgb (pat, 1.0,
- r0/255.0, g0/255.0, b0/255.0);
-
- if (shade && !no_rgba_overlay) {
- cairo_pattern_t* shade_pattern = cairo_pattern_create_linear (0.0, 0.0, width, 0.0);
- cairo_pattern_add_color_stop_rgba (shade_pattern, 0.0, 1.0, 1.0, 1.0, 0.15);
- cairo_pattern_add_color_stop_rgba (shade_pattern, 0.6, 0.0, 0.0, 0.0, 0.10);
- cairo_pattern_add_color_stop_rgba (shade_pattern, 1.0, 1.0, 1.0, 1.0, 0.20);
-
- cairo_surface_t* surface;
- cairo_t* tc = 0;
- surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
- tc = cairo_create (surface);
- cairo_set_source (tc, pat);
- cairo_rectangle (tc, 0, 0, width, height);
- cairo_fill (tc);
- cairo_set_source (tc, shade_pattern);
- cairo_rectangle (tc, 0, 0, width, height);
- cairo_fill (tc);
-
- cairo_pattern_destroy (pat);
- cairo_pattern_destroy (shade_pattern);
-
- pat = cairo_pattern_create_for_surface (surface);
-
- cairo_destroy (tc);
- cairo_surface_destroy (surface);
- }
-
- if (horiz) {
- cairo_surface_t* surface;
- cairo_t* tc = 0;
- surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, height, width);
- tc = cairo_create (surface);
-
- cairo_matrix_t m;
- cairo_matrix_init_rotate (&m, -M_PI/2.0);
- cairo_matrix_translate (&m, -height, 0);
- cairo_pattern_set_matrix (pat, &m);
- cairo_set_source (tc, pat);
- cairo_rectangle (tc, 0, 0, height, width);
- cairo_fill (tc);
- cairo_pattern_destroy (pat);
- pat = cairo_pattern_create_for_surface (surface);
- cairo_destroy (tc);
- cairo_surface_destroy (surface);
- }
-
- Cairo::RefPtr<Cairo::Pattern> p (new Cairo::Pattern (pat, false));
-
- return p;
-}
-
-Cairo::RefPtr<Cairo::Pattern>
-FastMeter::request_vertical_meter(
- int width, int height, int *clr, float *stp, int styleflags)
-{
- height = max(height, min_pattern_metric_size);
- height = min(height, max_pattern_metric_size);
-
- const Pattern10MapKey key (width, height,
- stp[0], stp[1], stp[2], stp[3],
- clr[0], clr[1], clr[2], clr[3],
- clr[4], clr[5], clr[6], clr[7],
- clr[8], clr[9], styleflags);
-
- Pattern10Map::iterator i;
- if ((i = vm_pattern_cache.find (key)) != vm_pattern_cache.end()) {
- return i->second;
- }
- // TODO flush pattern cache if it gets too large
-
- Cairo::RefPtr<Cairo::Pattern> p = generate_meter_pattern (
- width, height, clr, stp, styleflags, false);
- vm_pattern_cache[key] = p;
-
- return p;
-}
-
-Cairo::RefPtr<Cairo::Pattern>
-FastMeter::request_vertical_background(
- int width, int height, int *bgc, bool shade)
-{
- height = max(height, min_pattern_metric_size);
- height = min(height, max_pattern_metric_size);
- height += 2;
-
- const PatternBgMapKey key (width, height, bgc[0], bgc[1], shade);
- PatternBgMap::iterator i;
- if ((i = vb_pattern_cache.find (key)) != vb_pattern_cache.end()) {
- return i->second;
- }
- // TODO flush pattern cache if it gets too large
-
- Cairo::RefPtr<Cairo::Pattern> p = generate_meter_background (
- width, height, bgc, shade, false);
- vb_pattern_cache[key] = p;
-
- return p;
-}
-
-Cairo::RefPtr<Cairo::Pattern>
-FastMeter::request_horizontal_meter(
- int width, int height, int *clr, float *stp, int styleflags)
-{
- width = max(width, min_pattern_metric_size);
- width = min(width, max_pattern_metric_size);
-
- const Pattern10MapKey key (width, height,
- stp[0], stp[1], stp[2], stp[3],
- clr[0], clr[1], clr[2], clr[3],
- clr[4], clr[5], clr[6], clr[7],
- clr[8], clr[9], styleflags);
-
- Pattern10Map::iterator i;
- if ((i = hm_pattern_cache.find (key)) != hm_pattern_cache.end()) {
- return i->second;
- }
- // TODO flush pattern cache if it gets too large
-
- Cairo::RefPtr<Cairo::Pattern> p = generate_meter_pattern (
- height, width, clr, stp, styleflags, true);
-
- hm_pattern_cache[key] = p;
- return p;
-}
-
-Cairo::RefPtr<Cairo::Pattern>
-FastMeter::request_horizontal_background(
- int width, int height, int *bgc, bool shade)
-{
- width = max(width, min_pattern_metric_size);
- width = min(width, max_pattern_metric_size);
- width += 2;
-
- const PatternBgMapKey key (width, height, bgc[0], bgc[1], shade);
- PatternBgMap::iterator i;
- if ((i = hb_pattern_cache.find (key)) != hb_pattern_cache.end()) {
- return i->second;
- }
- // TODO flush pattern cache if it gets too large
-
- Cairo::RefPtr<Cairo::Pattern> p = generate_meter_background (
- height, width, bgc, shade, true);
-
- hb_pattern_cache[key] = p;
-
- return p;
-}
-
-
-
-void
-FastMeter::set_hold_count (long val)
-{
- if (val < 1) {
- val = 1;
- }
-
- hold_cnt = val;
- hold_state = 0;
- current_peak = 0;
-
- queue_draw ();
-}
-
-void
-FastMeter::on_size_request (GtkRequisition* req)
-{
- if (orientation == Vertical) {
- vertical_size_request (req);
- } else {
- horizontal_size_request (req);
- }
-}
-
-void
-FastMeter::vertical_size_request (GtkRequisition* req)
-{
- req->height = request_height;
- req->height = max(req->height, min_pattern_metric_size);
- req->height = min(req->height, max_pattern_metric_size);
- req->height += 2;
-
- req->width = request_width;
-}
-
-void
-FastMeter::horizontal_size_request (GtkRequisition* req)
-{
- req->width = request_width;
- req->width = max(req->width, min_pattern_metric_size);
- req->width = min(req->width, max_pattern_metric_size);
- req->width += 2;
-
- req->height = request_height;
-}
-
-void
-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;
- }
-
- CairoWidget::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;
- }
-
- CairoWidget::on_size_allocate (alloc);
-}
-
-void
-FastMeter::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t* area)
-{
- if (orientation == Vertical) {
- return vertical_expose (ctx->cobj(), area);
- } else {
- return horizontal_expose (ctx->cobj(), area);
- }
-}
-
-void
-FastMeter::vertical_expose (cairo_t* cr, cairo_rectangle_t* area)
-{
- gint top_of_meter;
- GdkRectangle intersection;
- GdkRectangle background;
- GdkRectangle eventarea;
-
- 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;
-
- eventarea.x = area->x;
- eventarea.y = area->y;
- eventarea.width = area->width;
- eventarea.height = area->height;
-
- if (gdk_rectangle_intersect (&background, &eventarea, &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, &eventarea, &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 - (int) floor (pixheight * current_peak));
- if (_styleflags & 2) { // LED stripes
- last_peak_rect.y = max(0, (last_peak_rect.y & (~1)));
- }
- 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;
- }
-}
-
-void
-FastMeter::horizontal_expose (cairo_t* cr, cairo_rectangle_t* area)
-{
- gint right_of_meter;
- GdkRectangle intersection;
- GdkRectangle background;
- GdkRectangle eventarea;
-
- 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;
-
- eventarea.x = area->x;
- eventarea.y = area->y;
- eventarea.width = area->width;
- eventarea.height = area->height;
-
- if (gdk_rectangle_intersect (&background, &eventarea, &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, &eventarea, &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;
- }
-}
-
-void
-FastMeter::set (float lvl, float peak)
-{
- float old_level = current_level;
- float old_peak = current_peak;
-
- if (pixwidth <= 0 || pixheight <=0) return;
-
- 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;
-
- const float pixscale = (orientation == Vertical) ? pixheight : pixwidth;
-#define PIX(X) floor(pixscale * (X))
- if (PIX(current_level) == PIX(old_level) && PIX(current_peak) == PIX(old_peak) && (hold_state == 0 || peak != -1)) {
- return;
- }
-
- Glib::RefPtr<Gdk::Window> win;
-
- if (! (win = get_window())) {
- 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 - (int) floor (pixheight * current_peak));
- if (_styleflags & 2) { // LED stripes
- rect.y = max(0, (rect.y & (~1)));
- }
- 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 ();
-}