diff options
author | Robin Gareus <robin@gareus.org> | 2017-07-16 22:13:46 +0200 |
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committer | Robin Gareus <robin@gareus.org> | 2017-07-17 21:06:04 +0200 |
commit | f6e182b937efda6ed0ba50dbc02af98524beb61c (patch) | |
tree | c5304cbfc96a82f00582ef038e2a9223881a7489 /libs/gtkmm2ext/fastmeter.cc | |
parent | b6e4dfe37be32009ce7ffc58d4a6139923c12981 (diff) |
Move Gtkmm2ext widgets into libwidget
Diffstat (limited to 'libs/gtkmm2ext/fastmeter.cc')
-rw-r--r-- | libs/gtkmm2ext/fastmeter.cc | 920 |
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 (); -} |