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/*
Copyright (C) 2011 Tom Szilagyi
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <gtk/gtk.h>
#include <math.h>
#include <stdlib.h>
#include "ir_modeind.h"
#include "ir_utils.h"
G_DEFINE_TYPE(IRModeInd, ir_modeind, GTK_TYPE_DRAWING_AREA);
typedef struct _IRModeIndPrivate IRModeIndPrivate;
#define IR_MODEIND_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), IR_MODEIND_TYPE, IRModeIndPrivate))
struct _IRModeIndPrivate {
int channels;
};
static gboolean ir_modeind_expose(GtkWidget * ir_modeind, GdkEventExpose * event);
static void ir_modeind_class_init(IRModeIndClass * cls) {
GObjectClass * obj_class = G_OBJECT_CLASS(cls);
GtkWidgetClass * widget_class = GTK_WIDGET_CLASS(cls);
widget_class->expose_event = ir_modeind_expose;
g_type_class_add_private(obj_class, sizeof(IRModeIndPrivate));
}
static void ir_modeind_init(IRModeInd * w) {
IRModeIndPrivate * p = IR_MODEIND_GET_PRIVATE(w);
p->channels = 0;
}
void draw_line(cairo_t * cr, int x1, int y1, int x2, int y2) {
cairo_move_to(cr, x1, y1);
cairo_line_to(cr, x2, y2);
}
static void draw(GtkWidget * widget, cairo_t * cr) {
IRModeIndPrivate * p = IR_MODEIND_GET_PRIVATE(widget);
int w = widget->allocation.width;
int h = widget->allocation.height;
cairo_rectangle(cr, 0, 0, w, h);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_fill_preserve(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_stroke(cr);
int nchan = p->channels;
if (!nchan) {
return;
}
const char * text = NULL;
switch (nchan) {
case 1: text = "Mono";
break;
case 2: text = "Stereo";
break;
case 4: text = "True Stereo";
break;
}
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_select_font_face(cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size(cr, 10.0);
draw_centered_text(cr, text, w/2, h*7/8);
draw_centered_text(cr, "L", w * 2/16, h * 7/32);
draw_centered_text(cr, "R", w * 2/16, h * 19/32);
draw_centered_text(cr, "in", w * 2/16, h * 13/32);
draw_centered_text(cr, "L", w * 14/16, h * 7/32);
draw_centered_text(cr, "R", w * 14/16, h * 19/32);
draw_centered_text(cr, "out", w * 14/16, h * 13/32);
/* draw lines */
switch (nchan) {
case 1:
case 2:
draw_line(cr, w * 7/32, h * 7/32, w * 14/32, h * 7/32);
draw_line(cr, w * 7/32, h * 19/32, w * 14/32, h * 19/32);
draw_line(cr, w * 18/32, h * 7/32, w * 25/32, h * 7/32);
draw_line(cr, w * 18/32, h * 19/32, w * 25/32, h * 19/32);
break;
case 4:
draw_line(cr, w * 7/32, h * 7/32, w * 14/32, h * 2/16);
draw_line(cr, w * 7/32, h * 7/32, w * 14/32, h * 5/16);
draw_line(cr, w * 7/32, h * 19/32, w * 14/32, h * 8/16);
draw_line(cr, w * 7/32, h * 19/32, w * 14/32, h * 11/16);
draw_line(cr, w * 18/32, h * 2/16, w * 25/32, h * 7/32);
draw_line(cr, w * 18/32, h * 8/16, w * 25/32, h * 7/32);
draw_line(cr, w * 18/32, h * 5/16, w * 25/32, h * 19/32);
draw_line(cr, w * 18/32, h * 11/16, w * 25/32, h * 19/32);
break;
}
cairo_stroke(cr);
/* draw two or four boxes atop each other */
switch (nchan) {
case 1:
cairo_set_source_rgb(cr, 0, 0.25, 0.8);
cairo_rectangle(cr, w * 7/16, h * 5/32, w/8, h/8);
cairo_fill_preserve(cr);
cairo_stroke(cr);
cairo_rectangle(cr, w * 7/16, h * 17/32, w/8, h/8);
cairo_fill_preserve(cr);
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
draw_centered_text(cr, "1", w/2, h * 7/32);
draw_centered_text(cr, "1", w/2, h * 19/32);
cairo_stroke(cr);
break;
case 2:
cairo_set_source_rgb(cr, 0, 0.25, 0.8);
cairo_rectangle(cr, w * 7/16, h * 5/32, w/8, h/8);
cairo_fill_preserve(cr);
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0.25, 0.8, 0);
cairo_rectangle(cr, w * 7/16, h * 17/32, w/8, h/8);
cairo_fill_preserve(cr);
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
draw_centered_text(cr, "1", w/2, h * 7/32);
draw_centered_text(cr, "2", w/2 - 1, h * 19/32);
cairo_stroke(cr);
break;
case 4:
cairo_set_source_rgb(cr, 0, 0.25, 0.8);
cairo_rectangle(cr, w * 7/16, h * 1/16, w/8, h/8);
cairo_fill_preserve(cr);
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0.25, 0.8, 0);
cairo_rectangle(cr, w * 7/16, h * 4/16, w/8, h/8);
cairo_fill_preserve(cr);
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0.8, 0.2, 0.4);
cairo_rectangle(cr, w * 7/16, h * 7/16, w/8, h/8);
cairo_fill_preserve(cr);
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0.7, 0.7, 0.4);
cairo_rectangle(cr, w * 7/16, h * 10/16, w/8, h/8);
cairo_fill_preserve(cr);
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
draw_centered_text(cr, "1", w/2, h * 2/16);
draw_centered_text(cr, "2", w/2 - 1, h * 5/16);
draw_centered_text(cr, "3", w/2 - 1, h * 8/16);
draw_centered_text(cr, "4", w/2 - 1, h * 11/16);
cairo_stroke(cr);
break;
}
}
static gboolean ir_modeind_expose(GtkWidget * widget, GdkEventExpose * event) {
cairo_t * cr = gdk_cairo_create(widget->window);
cairo_rectangle(cr, event->area.x, event->area.y,
event->area.width, event->area.height);
cairo_clip(cr);
draw(widget, cr);
cairo_destroy(cr);
return FALSE;
}
void ir_modeind_redraw(IRModeInd * w) {
GtkWidget * widget;
GdkRegion * region;
widget = GTK_WIDGET(w);
if (!widget->window) {
return;
}
region = gdk_drawable_get_clip_region(widget->window);
gdk_window_invalidate_region(widget->window, region, TRUE);
gdk_window_process_updates(widget->window, TRUE);
gdk_region_destroy(region);
}
void ir_modeind_set_channels(IRModeInd * w, int channels) {
if (!w || !GTK_IS_WIDGET(w)) {
return;
}
IRModeIndPrivate * p = IR_MODEIND_GET_PRIVATE(w);
p->channels = channels;
ir_modeind_redraw(w);
}
GtkWidget * ir_modeind_new(void) {
return (GtkWidget *)g_object_new(IR_MODEIND_TYPE, NULL);
}
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