/*
- Copyright (C) 2003-2006 Paul Davis
+ 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
#include <iostream>
#include <cmath>
#include <algorithm>
+#include <cstring>
+
#include <gdkmm/rectangle.h>
#include <gtkmm2ext/fastmeter.h>
#include <gtkmm2ext/utils.h>
-#include <gtkmm/style.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 Gdk;
using namespace Glib;
using namespace Gtkmm2ext;
using namespace std;
-string FastMeter::v_image_path;
-string FastMeter::h_image_path;
-RefPtr<Pixbuf> FastMeter::v_pixbuf;
-gint FastMeter::v_pixheight = 0;
-gint FastMeter::v_pixwidth = 0;
-
-RefPtr<Pixbuf> FastMeter::h_pixbuf;
-gint FastMeter::h_pixheight = 0;
-gint FastMeter::h_pixwidth = 0;
-
-FastMeter::FastMeter (long hold, unsigned long dimen, Orientation o)
+int FastMeter::min_pattern_metric_size = 16;
+int FastMeter::max_pattern_metric_size = 1024;
+
+FastMeter::Pattern10Map FastMeter::vm_pattern_cache;
+FastMeter::PatternBgMap FastMeter::vb_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
+ )
{
orientation = o;
hold_cnt = hold;
+ resized = true;
hold_state = 0;
current_peak = 0;
current_level = 0;
- current_user_level = -100.0f;
-
+ last_peak_rect.width = 0;
+ last_peak_rect.height = 0;
+
+ highlight = false;
+
+ _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 (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK);
- pixrect.x = 0;
- pixrect.y = 0;
+ pixrect.x = 1;
+ pixrect.y = 1;
- if (!v_image_path.empty() && v_pixbuf == 0) {
- v_pixbuf = Pixbuf::create_from_file (v_image_path);
- v_pixheight = v_pixbuf->get_height();
- v_pixwidth = v_pixbuf->get_width();
+ if (!len) {
+ len = 250;
}
+ fgpattern = request_vertical_meter(dimen, len, _clr, _stp, true);
+ bgpattern = request_vertical_background (dimen, len, _bgc, false);
+ pixheight = len;
+ pixwidth = dimen;
- if (!h_image_path.empty() && h_pixbuf == 0) {
- h_pixbuf = Pixbuf::create_from_file (h_image_path);
- h_pixheight = h_pixbuf->get_height();
- h_pixwidth = h_pixbuf->get_width();
- }
+ pixrect.width = pixwidth;
+ pixrect.height = pixheight;
- if (orientation == Vertical) {
- pixrect.width = min (v_pixwidth, (gint) dimen);
- pixrect.height = v_pixheight;
- } else {
- pixrect.width = h_pixwidth;
- pixrect.height = min (h_pixheight, (gint) dimen);
- }
+ request_width = pixrect.width + 2;
+ request_height= pixrect.height + 2;
- request_width = pixrect.width;
- request_height= pixrect.height;
+ queue_draw ();
}
FastMeter::~FastMeter ()
{
}
-void
-FastMeter::set_vertical_xpm (std::string path)
+Cairo::RefPtr<Cairo::Pattern>
+FastMeter::generate_meter_pattern (
+ int width, int height, int *clr, float *stp, bool shade)
{
- v_image_path = path;
+ guint8 r,g,b,a;
+ double knee;
+ double soft = 1.5 / (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 = ((float)height * stp[3] / 115.0f); // -0dB
+
+ UINT_TO_RGBA (clr[8], &r, &g, &b, &a);
+ cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) - soft,
+ 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/(double)height) + soft,
+ r/255.0, g/255.0, b/255.0);
+
+ knee = ((float)height * 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/(double)height) - soft,
+ 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/(double)height) + soft,
+ r/255.0, g/255.0, b/255.0);
+
+ knee = ((float)height * stp[1] / 115.0f); // -9dB
+
+ UINT_TO_RGBA (clr[4], &r, &g, &b, &a);
+ cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) - soft,
+ 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/(double)height) + soft,
+ r/255.0, g/255.0, b/255.0);
+
+ knee = ((float)height * stp[0] / 115.0f); // -18dB
+
+ UINT_TO_RGBA (clr[2], &r, &g, &b, &a);
+ cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) - soft,
+ 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/(double)height) + 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 (shade) {
+ 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, 1.0, 1.0, 1.0, 0.2);
+ cairo_pattern_add_color_stop_rgba (shade_pattern, 1, 0.0, 0.0, 0.0, 0.3);
+
+ 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);
+ }
+
+ Cairo::RefPtr<Cairo::Pattern> p (new Cairo::Pattern (pat, false));
+
+ return p;
}
-void
-FastMeter::set_horizontal_xpm (std::string path)
+
+Cairo::RefPtr<Cairo::Pattern>
+FastMeter::generate_meter_background (
+ int width, int height, int *clr, bool shade)
{
- h_image_path = path;
+ 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) {
+ 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);
+ }
+
+ 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, bool shade)
+{
+ if (height < min_pattern_metric_size)
+ height = min_pattern_metric_size;
+ if (height > max_pattern_metric_size)
+ 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]);
+
+ 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, shade);
+ vm_pattern_cache[key] = p;
+
+ return p;
+}
+
+Cairo::RefPtr<Cairo::Pattern>
+FastMeter::request_vertical_background(
+ int width, int height, int *bgc, bool shade)
+{
+ if (height < min_pattern_metric_size)
+ height = min_pattern_metric_size;
+ if (height > max_pattern_metric_size)
+ height = max_pattern_metric_size;
+
+ const PatternBgMapKey key (width, height, bgc[0], bgc[1]);
+ 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);
+ vb_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)
{
- req->width = request_width;
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::on_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, true);
+ bgpattern = request_vertical_background (request_width, h, highlight ? _bgh : _bgc, highlight);
+ pixheight = h - 2;
+ pixwidth = request_width - 2;
+ }
+
+ DrawingArea::on_size_allocate (alloc);
+ resized = true;
}
bool
FastMeter::on_expose_event (GdkEventExpose* ev)
{
- if (orientation == Vertical) {
- return vertical_expose (ev);
- } else {
- return horizontal_expose (ev);
- }
+ return vertical_expose (ev);
}
bool
FastMeter::vertical_expose (GdkEventExpose* ev)
{
+ Glib::RefPtr<Gdk::Window> win = get_window ();
gint top_of_meter;
GdkRectangle intersection;
GdkRectangle background;
- top_of_meter = (gint) floor (v_pixheight * current_level);
- pixrect.height = top_of_meter;
-
- background.x = 0;
- background.y = 0;
- background.width = pixrect.width;
- background.height = v_pixheight - top_of_meter;
+ cairo_t* cr = gdk_cairo_create (get_window ()->gobj());
- if (gdk_rectangle_intersect (&background, &ev->area, &intersection)) {
- get_window()->draw_rectangle (get_style()->get_black_gc(), true,
- intersection.x, intersection.y,
- intersection.width, intersection.height);
- }
-
- 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)
- */
-
- get_window()->draw_pixbuf(get_style()->get_fg_gc(get_state()), v_pixbuf,
- intersection.x, v_pixheight - top_of_meter,
- intersection.x, v_pixheight - top_of_meter,
- intersection.width, intersection.height,
- Gdk::RGB_DITHER_NONE, 0, 0);
- }
-
- /* draw peak bar */
-
- if (hold_state) {
- get_window()->draw_pixbuf (get_style()->get_fg_gc(get_state()), v_pixbuf,
- intersection.x, v_pixheight - (gint) floor (v_pixheight * current_peak),
- intersection.x, v_pixheight - (gint) floor (v_pixheight * current_peak),
- intersection.width, 3,
- Gdk::RGB_DITHER_NONE, 0, 0);
+ if (resized) {
+ cairo_set_source_rgb (cr, 0, 0, 0); // black
+ rounded_rectangle (cr, 0, 0, pixrect.width + 2, pixheight + 2, 2);
+ cairo_stroke (cr);
+ //cairo_fill (cr);
+ //resized = false;
}
- return true;
-}
+ cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
+ cairo_clip (cr);
-bool
-FastMeter::horizontal_expose (GdkEventExpose* ev)
-{
- GdkRectangle intersection;
- gint right_of_meter;
+ top_of_meter = (gint) floor (pixheight * current_level);
- right_of_meter = (gint) floor (h_pixwidth * current_level);
- pixrect.width = right_of_meter;
+ /* reset the height & origin of the rect that needs to show the pixbuf
+ */
- if (gdk_rectangle_intersect (&pixrect, &ev->area, &intersection)) {
+ pixrect.height = top_of_meter;
+ pixrect.y = 1 + pixheight - top_of_meter;
- /* draw the part of the meter image that we need.
- */
+ background.x = 1;
+ background.y = 1;
+ background.width = pixrect.width;
+ background.height = pixheight - top_of_meter;
- get_window()->draw_pixbuf (get_style()->get_fg_gc(get_state()), h_pixbuf,
- intersection.x, intersection.y,
- intersection.x, intersection.y,
- intersection.width, intersection.height,
- Gdk::RGB_DITHER_NONE, 0, 0);
+ 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 */
-
+
+ // draw peak bar
+
if (hold_state) {
- get_window()->draw_pixbuf (get_style()->get_fg_gc(get_state()), h_pixbuf,
- right_of_meter, intersection.y,
- right_of_meter, intersection.y,
- 3, intersection.height,
- Gdk::RGB_DITHER_NONE, 0, 0);
+ last_peak_rect.x = 1;
+ last_peak_rect.width = pixwidth;
+ last_peak_rect.y = 1 + pixheight - (gint) floor (pixheight * current_peak);
+ last_peak_rect.height = min(2, pixheight - last_peak_rect.y);
+ cairo_set_source (cr, fgpattern->cobj());
+ cairo_rectangle (cr, 1, last_peak_rect.y, pixwidth, last_peak_rect.height);
+ cairo_fill (cr);
+
+ } else {
+ last_peak_rect.width = 0;
+ last_peak_rect.height = 0;
}
- return true;
+ cairo_destroy (cr);
+
+ return TRUE;
}
void
-FastMeter::set (float lvl, float usrlvl)
+FastMeter::set (float lvl)
{
+ float old_level = current_level;
+ float old_peak = current_peak;
+
current_level = lvl;
- current_user_level = usrlvl;
-
+
if (lvl > current_peak) {
current_peak = lvl;
hold_state = hold_cnt;
}
-
+
if (hold_state > 0) {
if (--hold_state == 0) {
current_peak = lvl;
}
}
+ if (current_level == old_level && current_peak == old_peak && hold_state == 0) {
+ return;
+ }
+
+
+ Glib::RefPtr<Gdk::Window> win;
+
+ if ((win = get_window()) == 0) {
+ queue_draw ();
+ return;
+ }
+
+ queue_vertical_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 (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;
+ bgpattern = request_vertical_background (request_width, pixheight, highlight ? _bgh : _bgc, highlight);
+ resized = true;
queue_draw ();
}
projects / ardour.git / blobdiff