+++ /dev/null
-/***************************************************************************
- * gtkvumeter.c
- *
- * $Id$
- *
- *
- * Fri Jan 10 20:06:23 2003
- * Copyright 2003 Todd Goyen
- * wettoad@knighthoodofbuh.org
- *
- * Mon May 01 04:04:00 2006
- * Copyright 2006 Ulf Lamping
- * ulf.lamping@web.de
- *
- * Source code is LGPL'd,
- * but may be distributed under any other open source license
- ****************************************************************************/
-
-#if defined(GDK_DISABLE_DEPRECATED)
-# undef GDK_DISABLE_DEPRECATED
-#endif
-
-#include <math.h>
-#include <gtk/gtk.h>
-#include "gtk/gtkvumeter.h"
-
-#include "gtk/old-gtk-compat.h"
-
-#define MIN_DYNAMIC_SIDE 40
-
-#define SMALL_PITCH_LINE 2
-#define LARGE_PITCH_LINE 4
-
-#define SPARE_LEFT 1
-#define SPARE_RIGHT 1
-#define SPARE_TOP 1
-#define SPARE_BOTTOM 1
-
-
-static void gtk_vumeter_init (GtkVUMeter *vumeter);
-static void gtk_vumeter_class_init (GtkVUMeterClass *class);
-static void gtk_vumeter_destroy (GtkObject *object);
-static void gtk_vumeter_realize (GtkWidget *widget);
-static void gtk_vumeter_size_calculate (GtkWidget *widget, GtkRequisition *requisition);
-static void gtk_vumeter_size_request (GtkWidget *widget, GtkRequisition *requisition);
-static void gtk_vumeter_size_allocate (GtkWidget *widget, GtkAllocation *allocation);
-static gboolean gtk_vumeter_expose (GtkWidget *widget, GdkEventExpose *event);
-static void gtk_vumeter_free_colors (GtkVUMeter *vumeter);
-static void gtk_vumeter_setup_colors (GtkVUMeter *vumeter);
-static gint gtk_vumeter_sound_level_to_draw_level (GtkVUMeter *vumeter, gint sound_level);
-static gboolean gtk_vumeter_redraw_timeout (gpointer data);
-static void gtk_vumeter_setup_scale_items(GtkVUMeter *vumeter, GList *scale_items);
-
-static GtkWidgetClass *parent_class = NULL;
-
-GType gtk_vumeter_get_type (void)
-{
- static GType vumeter_type = 0;
-
- if (!vumeter_type) {
- static const GTypeInfo vumeter_info = {
- sizeof (GtkVUMeterClass),
- NULL, NULL,
- (GClassInitFunc) gtk_vumeter_class_init, NULL, NULL,
- sizeof (GtkVUMeter), 0, (GInstanceInitFunc) gtk_vumeter_init,
- NULL
- };
- vumeter_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkVUMeter", &vumeter_info, 0);
- }
-
- return vumeter_type;
-}
-
-/**
- * gtk_vumeter_new:
- *
- * Creates a new VUMeter widget.
- */
-GtkWidget* gtk_vumeter_new (void)
-{
- GtkVUMeter *vumeter;
-
- vumeter = GTK_VUMETER (g_object_new (GTK_TYPE_VUMETER, NULL));
-
- return GTK_WIDGET (vumeter);
-}
-
-static void gtk_vumeter_init (GtkVUMeter *vumeter)
-{
- vumeter->vertical = TRUE;
- vumeter->scale_inverted = FALSE;
- vumeter->thickness = 30;
- vumeter->reduced_thickness = 0;
- vumeter->scaling = GTK_VUMETER_SCALING_LINEAR;
- vumeter->scale_items = NULL;
- vumeter->scale_pitch_holes = 0;
-
- vumeter->padding_left = 1;
- vumeter->padding_right = 1;
- vumeter->padding_top = 1;
- vumeter->padding_bottom = 1;
-
- vumeter->colormap = NULL;
- vumeter->colors = 0;
- vumeter->f_gc = NULL;
- vumeter->b_gc = NULL;
- vumeter->f_colors = NULL;
- vumeter->b_colors = NULL;
- vumeter->f_brightness = 65535;
- vumeter->b_brightness = 49151;
- vumeter->yellow_level = 16383;
- vumeter->colors_inverted = FALSE;
-
- vumeter->level = 0;
- vumeter->level_min = 0;
- vumeter->level_max = 32767;
-
- vumeter->peak = FALSE;
- vumeter->peak_level = 0;
- vumeter->peak_timeout = 0;
- vumeter->peak_hold_factor = 0;
- vumeter->peak_hold = 0;
- vumeter->peak_falloff_mode = GTK_VUMETER_PEAK_FALLOFF_MEDIUM;
- vumeter->peak_falloff_rate = 3278;
-}
-
-static void gtk_vumeter_class_init (GtkVUMeterClass *class)
-{
- GtkObjectClass *object_class;
- GtkWidgetClass *widget_class;
-
- object_class = (GtkObjectClass*) class;
- widget_class = (GtkWidgetClass*) class;
- parent_class = g_type_class_ref (gtk_widget_get_type ());
-
- object_class->destroy = gtk_vumeter_destroy;
-
- widget_class->realize = gtk_vumeter_realize;
- widget_class->expose_event = gtk_vumeter_expose;
- widget_class->size_request = gtk_vumeter_size_request;
- widget_class->size_allocate = gtk_vumeter_size_allocate;
-}
-
-static void gtk_vumeter_destroy (GtkObject *object)
-{
- GtkVUMeter *vumeter = GTK_VUMETER (object);
-
- if(vumeter->peak_timeout) {
- g_source_remove(vumeter->peak_timeout);
- }
-
- gtk_vumeter_free_colors (vumeter);
-
- GTK_OBJECT_CLASS (parent_class)->destroy (object);
-}
-
-static void gtk_vumeter_realize (GtkWidget *widget)
-{
- GtkVUMeter *vumeter;
- GdkWindowAttr attributes;
- gint attributes_mask;
- GtkAllocation widget_alloc;
-
- g_return_if_fail (widget != NULL);
- g_return_if_fail (GTK_IS_VUMETER (widget));
-
-#if GTK_CHECK_VERSION(2,20,0)
- gtk_widget_set_realized(widget, TRUE);
-#else
- GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
-#endif
- vumeter = GTK_VUMETER (widget);
-
-#if GTK_CHECK_VERSION(2,18,0)
- gtk_widget_get_allocation(widget, &widget_alloc);
-#else
- widget_alloc = widget->allocation;
-#endif
-
- attributes.x = widget_alloc.x;
- attributes.y = widget_alloc.y;
- attributes.width = widget_alloc.width;
- attributes.height = widget_alloc.height;
- attributes.wclass = GDK_INPUT_OUTPUT;
- attributes.window_type = GDK_WINDOW_CHILD;
- attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
- attributes.visual = gtk_widget_get_visual (widget);
- attributes.colormap = gtk_widget_get_colormap (widget);
- attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
-#if GTK_CHECK_VERSION(2,18,0)
- gtk_widget_set_window(widget, gdk_window_new(gtk_widget_get_parent_window(widget), &attributes, attributes_mask));
-#else
- widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
-#endif
-
- gtk_widget_set_style(widget, gtk_style_attach(gtk_widget_get_style(widget), gtk_widget_get_window(widget)));
-
- gdk_window_set_user_data (gtk_widget_get_window(widget), widget);
- gtk_style_set_background (gtk_widget_get_style(widget), gtk_widget_get_window(widget), GTK_STATE_NORMAL);
-
- /* colors */
- vumeter->colormap = gdk_colormap_get_system ();
- gtk_vumeter_setup_colors (vumeter);
-}
-
-static void gtk_vumeter_size_calculate (GtkWidget *widget, GtkRequisition *requisition)
-{
- GtkVUMeter *vumeter;
- gint max_x = 0;
- gint max_y = 0;
- gint layout_width;
- gint layout_height;
- gint pitches = 0;
- GList * current;
-
- g_return_if_fail (GTK_IS_VUMETER (widget));
- g_return_if_fail (requisition != NULL);
-
- vumeter = GTK_VUMETER (widget);
-
- if(vumeter->scale_items != NULL) {
- /* iterate through scale items to get the highest scale item */
- for (current = vumeter->scale_items; current != NULL; current = g_list_next(current)) {
- GtkVUMeterScaleItem * item = current->data;
-
- pitches++;
-
- if(item->label) {
- PangoLayout * layout = gtk_widget_create_pango_layout (widget, item->label);
- pango_layout_get_pixel_size(layout, &layout_width, &layout_height);
- /* XXX - memleak */
- } else {
- layout_width = 0;
- layout_height = 0;
- }
-
- if (vumeter->vertical == TRUE) {
- max_x = MAX(max_x, item->large ? LARGE_PITCH_LINE : SMALL_PITCH_LINE);
- max_y = MAX(max_y, 1);
- if(item->label) {
- max_x = MAX(max_x, LARGE_PITCH_LINE+3+layout_width);
- max_y = MAX(max_y, layout_height);
- }
- } else {
- max_x = MAX(max_x, 1);
- max_y = MAX(max_y, item->large ? LARGE_PITCH_LINE : SMALL_PITCH_LINE);
- if(item->label) {
- max_x = MAX(max_x, layout_width);
- max_y = MAX(max_y, LARGE_PITCH_LINE+/*3+*/layout_height-2);
- }
- }
- }
- }
-
- pitches = MAX((vumeter->scale_pitch_holes+1)*pitches-1, MIN_DYNAMIC_SIDE);
-
- if (vumeter->vertical == TRUE) {
- vumeter->padding_left = SPARE_LEFT;
- vumeter->padding_right = SPARE_RIGHT + max_x;
- vumeter->padding_top = SPARE_TOP + max_y / 2;
- vumeter->padding_bottom = SPARE_BOTTOM + max_y / 2;
- requisition->width = vumeter->padding_left + vumeter->thickness + vumeter->padding_right;
- requisition->height = vumeter->padding_top + pitches + vumeter->padding_bottom;
- } else {
- vumeter->padding_left = SPARE_LEFT + max_x / 2;
- vumeter->padding_right = SPARE_RIGHT + max_x / 2;
- vumeter->padding_top = SPARE_TOP;
- vumeter->padding_bottom = SPARE_BOTTOM + max_y;
- requisition->width = vumeter->padding_left + pitches + vumeter->padding_right;
- requisition->height = vumeter->padding_top + vumeter->thickness + vumeter->padding_bottom;
- }
-}
-
-static void gtk_vumeter_size_request (GtkWidget *widget, GtkRequisition *requisition)
-{
- gtk_vumeter_size_calculate(widget, requisition);
-}
-
-static void gtk_vumeter_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
-{
- GtkVUMeter *vumeter;
- GtkRequisition requisition;
-
- g_return_if_fail (GTK_IS_VUMETER (widget));
- g_return_if_fail (allocation != NULL);
-
-#if GTK_CHECK_VERSION(2,18,0)
- gtk_widget_set_allocation(widget, allocation);
-#else
- widget->allocation = *allocation;
-#endif
- vumeter = GTK_VUMETER (widget);
-
- gtk_vumeter_size_calculate(widget, &requisition);
-
- if (gtk_widget_get_realized(widget)) {
- gdk_window_move_resize (gtk_widget_get_window(widget), allocation->x, allocation->y,
- MAX (allocation->width, requisition.width),
- MAX (allocation->height, requisition.height));
-
- /* Fix the colours */
- gtk_vumeter_setup_colors (vumeter);
- }
-}
-
-static gboolean gtk_vumeter_expose (GtkWidget *widget, GdkEventExpose *event)
-{
- GtkVUMeter *vumeter;
- gint index, level, peak_level = 0;
- gint width, height;
- gint w, h, inc;
- GList * current;
- GtkAllocation widget_alloc;
- GdkWindow *widget_window = gtk_widget_get_window(widget);
-
- g_return_val_if_fail (GTK_IS_VUMETER (widget), FALSE);
- g_return_val_if_fail (event != NULL, FALSE);
-
- vumeter = GTK_VUMETER (widget);
-
- level = gtk_vumeter_sound_level_to_draw_level (vumeter, vumeter->level);
- if (vumeter->peak == TRUE) {
- peak_level = gtk_vumeter_sound_level_to_draw_level (vumeter, vumeter->peak_level);
- }
-
-#if GTK_CHECK_VERSION(2,18,0)
- gtk_widget_get_allocation(widget, &widget_alloc);
-#else
- widget_alloc = widget->allocation;
-#endif
-
- /* the dimentions of the bar (leaving some space for the scale) */
- width = widget_alloc.width - vumeter->padding_left - vumeter->padding_right;
- height = widget_alloc.height - vumeter->padding_top - vumeter->padding_bottom;
-
- /* clear widget and draw border */
- gtk_paint_box (gtk_widget_get_style(widget), widget_window, GTK_STATE_NORMAL, GTK_SHADOW_IN,
- NULL, widget, "trough", 0, 0, widget_alloc.width, widget_alloc.height);
-
-#if 0
- /* clear bar only */
- gtk_paint_box (widget->style, widget_window, GTK_STATE_NORMAL, GTK_SHADOW_NONE,
- NULL, widget, "trough", vumeter->padding_left, vumeter->padding_top, width+1, height+1);
-#endif
-
- if (vumeter->vertical == TRUE) {
- if (vumeter->scale_inverted == TRUE) {
- h = height + vumeter->padding_top;
- inc = -1;
- } else {
- h = vumeter->padding_top;
- inc = 1;
- }
-
- /* draw scale */
- if(vumeter->scale_items != NULL) {
- /* iterate through scale items */
- for (current = vumeter->scale_items; current != NULL; current = g_list_next(current)) {
- GtkVUMeterScaleItem * item = current->data;
- int scale_level = gtk_vumeter_sound_level_to_draw_level (vumeter, item->level);
-
- /* XXX - use a fixed color for the scale? */
- gdk_draw_line (widget_window, vumeter->b_gc[scale_level],
- vumeter->padding_left+width, h + inc*scale_level,
- vumeter->padding_left+width+(item->large==TRUE ? LARGE_PITCH_LINE : SMALL_PITCH_LINE)-1, h + inc*scale_level);
-
- if(item->label) {
- int layout_width;
- int layout_height;
- PangoLayout * layout = gtk_widget_create_pango_layout (widget, item->label);
- pango_layout_get_pixel_size(layout, &layout_width, &layout_height);
- gdk_draw_layout(widget_window,
- vumeter->b_gc[scale_level],
- vumeter->padding_left+width+vumeter->padding_right-1-layout_width,
- h + inc*scale_level - layout_height/2 - 1,
- layout);
- }
- }
- }
-
- /* draw background gradient */
- for (index = 0; index < level; index++, h += inc) {
- gdk_draw_line (widget_window, vumeter->b_gc[index],
- vumeter->padding_left+vumeter->reduced_thickness, h,
- vumeter->padding_left+width-1-vumeter->reduced_thickness, h);
- }
- /* draw foreground gradient */
- for (index = level; index < height; index++, h += inc) {
- gdk_draw_line (widget_window, vumeter->f_gc[index],
- vumeter->padding_left,h,
- vumeter->padding_left+width-1, h);
- }
- /* Draw the peak */
- if (vumeter->peak == TRUE) {
- /* Reset w */
- index = MAX (peak_level - 1, 0);
- for (; index < MIN (peak_level + 1, height - 2); index++) {
- h = vumeter->scale_inverted == TRUE ? height +vumeter->padding_top - (index + 2) : vumeter->padding_top + index + 1;
- gdk_draw_line (widget_window, vumeter->f_gc[index], vumeter->padding_left, h, vumeter->padding_left+width-1, h);
- }
- }
- } else { /* Horizontal */
- /* the start point of the bar */
- if (vumeter->scale_inverted == TRUE) {
- w = width-1 + vumeter->padding_left;
- inc = -1;
- } else {
- w = vumeter->padding_left;
- inc = 1;
- }
-
- /* draw scale */
- if(vumeter->scale_items != NULL) {
- /* iterate through scale items */
- for (current = vumeter->scale_items; current != NULL; current = g_list_next(current)) {
- GtkVUMeterScaleItem * item = current->data;
- int scale_level = gtk_vumeter_sound_level_to_draw_level (vumeter, item->level);
-
- /* XXX - use a fixed color for the scale? */
- gdk_draw_line (widget_window, vumeter->b_gc[scale_level],
- w + inc*scale_level, vumeter->padding_top+height,
- w + inc*scale_level, vumeter->padding_top+height+(item->large==TRUE ? LARGE_PITCH_LINE : SMALL_PITCH_LINE)-1);
-
- if(item->label) {
- int layout_width;
- int layout_height;
- PangoLayout * layout = gtk_widget_create_pango_layout (widget, item->label);
- pango_layout_get_pixel_size(layout, &layout_width, &layout_height);
- gdk_draw_layout(widget_window, vumeter->b_gc[scale_level],
- w + inc*scale_level - layout_width/2,
- height + vumeter->padding_top + 3,
- layout);
- }
- }
- }
-
- /* draw background gradient */
- for (index = 0; index < level; index++, w += inc) {
- gdk_draw_line (widget_window, vumeter->b_gc[index],
- w, vumeter->padding_top+vumeter->reduced_thickness,
- w, vumeter->padding_top+height-1-vumeter->reduced_thickness);
- }
- /* draw foreground gradient */
- for (index = level; index < width; index++, w+= inc) {
- gdk_draw_line (widget_window, vumeter->f_gc[index],
- w, vumeter->padding_top,
- w, vumeter->padding_top+height-1);
- }
-
- /* Draw the peak */
- if (vumeter->peak == TRUE) {
- /* Reset w */
- index = MAX (peak_level - 1, 0);
- w = vumeter->scale_inverted == TRUE ? width + vumeter->padding_left - (index + 1) : vumeter->padding_left + index + 1;
- for (; index <= MIN (peak_level, width - 2); index++, w+= inc) {
- gdk_draw_line (widget_window, vumeter->f_gc[index], w, vumeter->padding_top, w, vumeter->padding_top+height-1);
- }
- }
- }
-
- return TRUE;
-}
-
-static void gtk_vumeter_free_colors (GtkVUMeter *vumeter)
-{
- gint index;
-
- if (vumeter->colors == 0) { return; }
-
- /* Free old gc's */
- if (vumeter->f_gc && vumeter->b_gc) {
- for (index = 0; index < vumeter->colors; index++) {
- if (vumeter->f_gc[index]) {
- g_object_unref (G_OBJECT(vumeter->f_gc[index]));
- }
- if (vumeter->b_gc[index]) {
- g_object_unref (G_OBJECT(vumeter->b_gc[index]));
- }
- }
- g_free(vumeter->f_gc);
- g_free(vumeter->b_gc);
- vumeter->f_gc = NULL;
- vumeter->b_gc = NULL;
- }
-
- /* Free old Colors */
- if (vumeter->f_colors) {
- gdk_colormap_free_colors (vumeter->colormap, vumeter->f_colors, vumeter->colors);
- g_free (vumeter->f_colors);
- vumeter->f_colors = NULL;
- }
- if (vumeter->b_colors) {
- gdk_colormap_free_colors (vumeter->colormap, vumeter->b_colors, vumeter->colors);
- g_free (vumeter->b_colors);
- vumeter->b_colors = NULL;
- }
-}
-
-static void gtk_vumeter_setup_colors (GtkVUMeter *vumeter)
-{
- gint index;
- gint f_step, b_step;
- gint first, second;
- gint max = 0, min = 0, log_max = 0;
- GtkAllocation vumeter_alloc;
-
- g_return_if_fail (vumeter->colormap != NULL);
-
- gtk_vumeter_free_colors (vumeter);
-
-#if GTK_CHECK_VERSION(2,18,0)
- gtk_widget_get_allocation(GTK_WIDGET(vumeter), &vumeter_alloc);
-#else
- vumeter_alloc = GTK_WIDGET(vumeter)->allocation;
-#endif
-
- /* Set new size */
- if (vumeter->vertical == TRUE) {
- vumeter->colors = MAX(vumeter_alloc.height - vumeter->padding_top - vumeter->padding_bottom, 0);
- } else {
- vumeter->colors = MAX(vumeter_alloc.width - vumeter->padding_left - vumeter->padding_right, 0);
- }
-
- /* allocate new memory */
- vumeter->f_colors = g_malloc (vumeter->colors * sizeof(GdkColor));
- vumeter->b_colors = g_malloc (vumeter->colors * sizeof(GdkColor));
- vumeter->f_gc = g_malloc (vumeter->colors * sizeof(GdkGC *));
- vumeter->b_gc = g_malloc (vumeter->colors * sizeof(GdkGC *));
-
- /* Initialize stuff */
- if (vumeter->scaling == GTK_VUMETER_SCALING_LINEAR) {
- first = 1+gtk_vumeter_sound_level_to_draw_level (vumeter, vumeter->yellow_level);
- second = vumeter->colors;
- } else {
- max = vumeter->level_max;
- min = vumeter->level_min;
- log_max = (gint) (- 20.0 * log10(1.0/(max - min + 1.0)));
- first = (gint)((gdouble)vumeter->colors * 6.0 / log_max);
- second = (gint)((gdouble)vumeter->colors * 18.0 / log_max);
- }
-
- if(vumeter->colors_inverted) {
- vumeter->f_colors[0].red = 0;
- vumeter->f_colors[0].green = vumeter->f_brightness;
- vumeter->f_colors[0].blue = 0;
-
- vumeter->b_colors[0].red = 0;
- vumeter->b_colors[0].green = vumeter->b_brightness;
- vumeter->b_colors[0].blue = 0;
-
- /* Allocate from Green to Yellow */
- f_step = vumeter->f_brightness / (first - 1);
- b_step = vumeter->b_brightness / (first - 1);
- for (index = 1; index < first; index++) {
- /* foreground */
- vumeter->f_colors[index].red = vumeter->f_colors[index - 1].red + f_step;
- vumeter->f_colors[index].green = vumeter->f_brightness;
- vumeter->f_colors[index].blue = 0;
- /* background */
- vumeter->b_colors[index].red = vumeter->b_colors[index - 1].red + b_step;
- vumeter->b_colors[index].green = vumeter->b_brightness;
- vumeter->b_colors[index].blue = 0;
- }
- /* Allocate from Yellow to Red */
- if(second != first) {
- f_step = vumeter->f_brightness / (second - first);
- b_step = vumeter->b_brightness / (second - first);
- for (index = first; index < second; index++) {
- /* foreground */
- vumeter->f_colors[index].red = vumeter->f_colors[index - 1].red;
- vumeter->f_colors[index].green = vumeter->f_colors[index - 1].green - f_step;
- vumeter->f_colors[index].blue = 0;
- /* background */
- vumeter->b_colors[index].red = vumeter->b_colors[index - 1].red;
- vumeter->b_colors[index].green = vumeter->b_colors[index - 1].green - b_step;
- vumeter->b_colors[index].blue = 0;
- }
- }
- } else {
- vumeter->f_colors[0].red = vumeter->f_brightness;
- vumeter->f_colors[0].green = 0;
- vumeter->f_colors[0].blue = 0;
-
- vumeter->b_colors[0].red = vumeter->b_brightness;
- vumeter->b_colors[0].green = 0;
- vumeter->b_colors[0].blue = 0;
-
- /* Allocate from Red to Yellow */
- f_step = vumeter->f_brightness / MAX(first - 1, 1);
- b_step = vumeter->b_brightness / MAX(first - 1, 1);
- for (index = 1; index < first; index++) {
- /* foreground */
- vumeter->f_colors[index].red = vumeter->f_brightness;
- vumeter->f_colors[index].green = vumeter->f_colors[index - 1].green + f_step;
- vumeter->f_colors[index].blue = 0;
- /* background */
- vumeter->b_colors[index].red = vumeter->b_brightness;
- vumeter->b_colors[index].green = vumeter->b_colors[index - 1].green + b_step;
- vumeter->b_colors[index].blue = 0;
- }
- /* Allocate from Yellow to Green */
- f_step = vumeter->f_brightness / MAX(second - first, 1);
- b_step = vumeter->b_brightness / MAX(second - first, 1);
- for (index = first; index < second; index++) {
- /* foreground */
- vumeter->f_colors[index].red = vumeter->f_colors[index - 1].red - f_step;
- vumeter->f_colors[index].green = vumeter->f_colors[index - 1].green;
- vumeter->f_colors[index].blue = 0;
- /* background */
- vumeter->b_colors[index].red = vumeter->b_colors[index - 1].red - b_step;
- vumeter->b_colors[index].green = vumeter->b_colors[index - 1].green;
- vumeter->b_colors[index].blue = 0;
- }
- if (vumeter->scaling == GTK_VUMETER_SCALING_LOG && (vumeter->colors - second) > 0) {
- /* Allocate from Green to Dark Green */
- f_step = vumeter->f_brightness / 2 / (vumeter->colors - second);
- b_step = vumeter->b_brightness / 2 / (vumeter->colors - second);
- for (index = second; index < vumeter->colors; index++) {
- /* foreground */
- vumeter->f_colors[index].red = 0;
- vumeter->f_colors[index].green = vumeter->f_colors[index - 1].green - f_step;
- vumeter->f_colors[index].blue = 0;
- /* background */
- vumeter->b_colors[index].red = 0;
- vumeter->b_colors[index].green = vumeter->b_colors[index - 1].green - b_step;
- vumeter->b_colors[index].blue = 0;
- }
- }
- } /* colors_inverted */
-
- /* Allocate the Colours */
- for (index = 0; index < vumeter->colors; index++) {
- /* foreground */
- gdk_colormap_alloc_color (vumeter->colormap, &vumeter->f_colors[index], FALSE, TRUE);
- vumeter->f_gc[index] = gdk_gc_new(gtk_widget_get_window(GTK_WIDGET(vumeter)));
- gdk_gc_set_foreground(vumeter->f_gc[index], &vumeter->f_colors[index]);
- /* background */
- gdk_colormap_alloc_color (vumeter->colormap, &vumeter->b_colors[index], FALSE, TRUE);
- vumeter->b_gc[index] = gdk_gc_new(gtk_widget_get_window(GTK_WIDGET(vumeter)));
- gdk_gc_set_foreground(vumeter->b_gc[index], &vumeter->b_colors[index]);
- }
-}
-
-static gint gtk_vumeter_sound_level_to_draw_level (GtkVUMeter *vumeter, gint sound_level)
-{
- gdouble draw_level;
- gdouble level, min, max, height;
- gdouble log_level, log_max;
-
- level = (gdouble)sound_level;
- min = (gdouble)vumeter->level_min;
- max = (gdouble)vumeter->level_max;
- height = (gdouble)vumeter->colors;
-
- if (vumeter->scaling == GTK_VUMETER_SCALING_LINEAR) {
- draw_level = (1.0 - (level - min)/(max - min)) * (height - 1.0);
- /* to avoid rounding problems */
- draw_level += 0.001;
- } else {
- log_level = log10((level - min + 1)/(max - min + 1));
- log_max = log10(1/(max - min + 1));
- draw_level = log_level/log_max * (height - 1.0);
- }
-
- return ((gint)draw_level);
-}
-
-static gboolean gtk_vumeter_redraw_timeout (gpointer data)
-{
- GtkVUMeter *vumeter = data;
- /* Immediately return if need be */
- if (!gtk_widget_get_realized (GTK_WIDGET(vumeter))) { return TRUE; }
- if (vumeter->peak == FALSE) { return TRUE; }
- if (vumeter->peak_level == vumeter->level) { return TRUE; }
-
- if(vumeter->peak_hold != 0) {
- vumeter->peak_hold--;
- return TRUE;
- }
-
- /* Drop the peak_level by rate */
- vumeter->peak_level -= vumeter->peak_falloff_rate;
- vumeter->peak_level = MAX (vumeter->peak_level, vumeter->level);
-
- gtk_widget_queue_draw (GTK_WIDGET(vumeter));
-
- return TRUE;
-}
-
-static GList *gtk_vumeter_clone_scale_items(GList *scale_items)
-{
- GList * new_list = NULL;
-
-
- for ( ; scale_items != NULL; scale_items = g_list_next(scale_items)) {
- GtkVUMeterScaleItem * item = scale_items->data;
- GtkVUMeterScaleItem * new_item;
-
- new_item = g_malloc(sizeof(GtkVUMeterScaleItem));
- new_item->level = item->level;
- new_item->large = item->large;
- new_item->label = g_strdup(item->label);
- new_list = g_list_append(new_list, new_item);
- }
-
- return new_list;
-}
-
-static void gtk_vumeter_setup_scale_items(GtkVUMeter *vumeter, GList *scale_items)
-{
- GList * new_list = NULL;
- GList * new_list_item = NULL;
-
- /* clone the whole list */
- new_list = gtk_vumeter_clone_scale_items(scale_items);
-
- /* clamp the levels */
- for (new_list_item = new_list; new_list_item != NULL; new_list_item = g_list_next(new_list_item)) {
- GtkVUMeterScaleItem * item = new_list_item->data;
-
- item->level = CLAMP(item->level, vumeter->level_min, vumeter->level_max);
- }
-
- gtk_vumeter_free_scale_items(vumeter->scale_items);
- vumeter->scale_items = new_list;
-}
-
-void gtk_vumeter_free_scale_items(GList *scale_items)
-{
- GList * current;
-
- if(scale_items == NULL) return;
-
- for (current = scale_items; current != NULL; current = g_list_next(current)) {
- GtkVUMeterScaleItem * item = current->data;
-
- g_free((void *) item->label);
- g_free(item);
- }
-
- g_list_free(scale_items);
-}
-
-/**
- * gtk_vumeter_set_orientation:
- * @param vumeter the vumeter widget
- * @param orientation the direction in which the graph is going for increasing values
- */
-void gtk_vumeter_set_orientation (GtkVUMeter *vumeter, GtkVUMeterOrientation orientation)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- if(orientation == GTK_VUMETER_BOTTOM_TO_TOP || orientation == GTK_VUMETER_TOP_TO_BOTTOM) {
- vumeter->vertical = TRUE;
- } else {
- vumeter->vertical = FALSE;
- }
-
- if(orientation == GTK_VUMETER_LEFT_TO_RIGHT || orientation == GTK_VUMETER_BOTTOM_TO_TOP) {
- vumeter->scale_inverted = TRUE;
- } else {
- vumeter->scale_inverted = FALSE;
- }
-
- if (gtk_widget_get_realized (GTK_WIDGET(vumeter))) {
- gtk_widget_queue_draw (GTK_WIDGET (vumeter));
- }
-}
-
-/**
- * gtk_vumeter_get_orientation:
- * @param vumeter the vumeter widget
- * @return the direction in which the graph is going for increasing values
- */
-GtkVUMeterOrientation gtk_vumeter_get_orientation (GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return GTK_VUMETER_BOTTOM_TO_TOP;
- }
-
- /* XXX - might be faster using a lookup table */
- if(vumeter->vertical == TRUE && vumeter->scale_inverted == TRUE) {
- return GTK_VUMETER_BOTTOM_TO_TOP;
- }
-
- if(vumeter->vertical == TRUE && vumeter->scale_inverted == FALSE) {
- return GTK_VUMETER_TOP_TO_BOTTOM;
- }
-
- if(vumeter->vertical == FALSE && vumeter->scale_inverted == TRUE) {
- return GTK_VUMETER_LEFT_TO_RIGHT;
- }
-
- if(vumeter->vertical == FALSE && vumeter->scale_inverted == FALSE) {
- return GTK_VUMETER_LEFT_TO_RIGHT;
- }
-
- g_assert_not_reached();
- return GTK_VUMETER_BOTTOM_TO_TOP;
-}
-
-/**
- * gtk_vumeter_set_thickness:
- * @param vumeter the vumeter widget
- * @param thickness gtkvumeter's minimum graph thickness in pixels (default:30)
- *
- * Allows the user program to change the dimension of the vumeter.
- * For a vertical meter, this is the width.
- * Likewise for a horizontal meter, this is the height.
- */
-void gtk_vumeter_set_thickness (GtkVUMeter *vumeter, gint thickness)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- if (vumeter->thickness != thickness) {
- vumeter->thickness = thickness;
- vumeter->reduced_thickness = MIN(vumeter->reduced_thickness, vumeter->thickness);
- gtk_widget_queue_resize (GTK_WIDGET (vumeter));
- }
-}
-
-/**
- * gtk_vumeter_get_thickness:
- * @param vumeter the vumeter widget
- * @return gtkvumeter's minimum graph thickness in pixels (default:30)
- *
- * For a vertical meter, this is the width.
- * Likewise for a horizontal meter, this is the height.
- */
-gint gtk_vumeter_get_thickness (GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return 0;
- } else {
- return vumeter->thickness;
- }
-}
-
-/**
- * gtk_vumeter_set_thickness_reduction:
- * @param vumeter the vumeter widget
- * @param reduced_thickness pixels to reduce the "none active" part of the graph (default:0)
- *
- * Allows the user program to reduce the thickness of the "background" part of the vumeter graph.
- * This can be useful to distinguish the border between the foreground and background graph.
- */
-void gtk_vumeter_set_thickness_reduction (GtkVUMeter *vumeter, gint reduced_thickness)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- if (vumeter->reduced_thickness != reduced_thickness) {
- vumeter->reduced_thickness = reduced_thickness;
- vumeter->reduced_thickness = CLAMP(vumeter->reduced_thickness, 0, vumeter->thickness/2);
- gtk_widget_queue_resize (GTK_WIDGET (vumeter));
- }
-}
-
-/**
- * gtk_vumeter_get_thickness_reduction:
- * @param vumeter the vumeter widget
- * @return pixels to reduce the "none active" part of the graph (default:0)
- *
- * The reduced thickness of the "background" part of the vumeter graph.
- */
-gint gtk_vumeter_get_thickness_reduction (GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return 0;
- } else {
- return vumeter->reduced_thickness;
- }
-}
-
-/**
- * gtk_vumeter_set_min_max:
- * @param vumeter the vumeter widget
- * @param min the new minimum level shown (default: 0)
- * @param max the new maximum level shown (default: 32768)
- *
- * Sets the minimum and maximum of the VU Meters scale.
- * It will increment max by one if min == max.
- * And finally it will clamp the relevant levels into the min, max range.
- * Either value can be NULL, to keep the current value.
- *
- * Don't forget to call %gtk_vumeter_set_yellow_level() if required!
- *
- * WARNING: negative values for min or max will currently not work!!!
- */
-void gtk_vumeter_set_min_max (GtkVUMeter *vumeter, gint *min, gint *max)
-{
- gint mi, ma;
-
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- /* Allow min or max to be NULL */
- mi = (min != NULL) ? *min : vumeter->level_min;
- ma = (max != NULL) ? *max : vumeter->level_max;
-
- /* Ensure that max > min */
- vumeter->level_max = MAX(ma, mi);
- vumeter->level_min = MIN(mi, ma);
- if (vumeter->level_max == vumeter->level_min) {
- /* Increment max so we have a range */
- vumeter->level_max++;
- }
- /* Clamp the levels to the new range */
- vumeter->level = CLAMP (vumeter->level, vumeter->level_min, vumeter->level_max);
- vumeter->peak_level = CLAMP (vumeter->peak_level, vumeter->level, vumeter->level_max);
- vumeter->yellow_level = CLAMP (vumeter->yellow_level, vumeter->level_min, vumeter->level_max);
-
- gtk_widget_queue_draw (GTK_WIDGET(vumeter));
-}
-
-/**
- * gtk_vumeter_get_min_max:
- * @param vumeter the vumeter widget
- * @param min the new minimum level shown (default: 0)
- * @param max the new maximum level shown (default: 32768)
- *
- * The minimum and maximum of the VU Meters scale.
- */
-void gtk_vumeter_get_min_max (GtkVUMeter *vumeter, gint *min, gint *max)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- *min = 0;
- *max = 0;
- } else {
- *min = vumeter->level_min;
- *max = vumeter->level_max;
- }
-}
-
-/**
- * gtk_vumeter_set_level:
- * @param vumeter the vumeter widget
- * @param level the new level shown (default: 0)
- *
- * Sets new level value for the vumeter.
- * The level is clamped to the min max range.
- * The peak_level will be increased to level if needed.
- */
-void gtk_vumeter_set_level (GtkVUMeter *vumeter, gint level)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- if (vumeter->level != level) {
- vumeter->level = CLAMP (level, vumeter->level_min, vumeter->level_max);
- if(vumeter->level > vumeter->peak_level) {
- vumeter->peak_hold = vumeter->peak_hold_factor;
- vumeter->peak_level = vumeter->level;
- }
- gtk_widget_queue_draw (GTK_WIDGET(vumeter));
- }
-}
-
-/**
- * gtk_vumeter_get_level:
- * @param vumeter the vumeter widget
- * @return the level shown (default: 0)
- *
- * Gets the level value of the vumeter.
- */
-gint gtk_vumeter_get_level (GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return 0;
- } else {
- return vumeter->level;
- }
-}
-
-/**
- * gtk_vumeter_set_scaling:
- * @param vumeter the vumeter widget
- * @param scaling the scaling mode either GTK_VUMETER_SCALING_LINEAR or GTK_VUMETER_SCALING_LOG
- *
- * Sets the scaling mode of the VU Meter.
- * It is either log or linear and defaults to linear.
- * No matter which scale you set the input should always be linear, gtkVUMeter
- * does the log calculation/display.
- */
-void gtk_vumeter_set_scaling (GtkVUMeter *vumeter, GtkVUMeterScaling scaling)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- if (scaling != vumeter->scaling) {
- vumeter->scaling = CLAMP (scaling, GTK_VUMETER_SCALING_LINEAR, GTK_VUMETER_SCALING_LOG);
- if (gtk_widget_get_realized (GTK_WIDGET(vumeter))) {
- gtk_vumeter_setup_colors (vumeter);
- gtk_widget_queue_draw (GTK_WIDGET (vumeter));
- }
- }
-}
-
-/**
- * gtk_vumeter_get_scaling:
- * @param vumeter the vumeter widget
- * @return the scaling mode either GTK_VUMETER_SCALING_LINEAR or GTK_VUMETER_SCALING_LOG
- *
- * Gets the scaling mode of the VU Meter.
- * It is either log or linear and defaults to linear.
- */
-GtkVUMeterScaling gtk_vumeter_get_scaling (GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return 0;
- } else {
- return vumeter->scaling;
- }
-}
-
-/**
- * gtk_vumeter_set_scale_items:
- * @param vumeter the vumeter widget
- * @param scale_items a GList of the pitch lines and labels (default:NULL)
- *
- * Set the scale pitch lines and labels.
- * Must be NULL or a GList containing filled %GtkVUMeterScaleItem items.
- * Function will make a deep copy of the GList and it's items,
- * so the given GList and it's items can be safely thrown away after the call.
- * A side effect: This also sets the minimum size of the widget.
- */
-void gtk_vumeter_set_scale_items(GtkVUMeter *vumeter, GList *scale_items)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- gtk_vumeter_setup_scale_items(vumeter, scale_items);
-
- if (gtk_widget_get_realized(GTK_WIDGET(vumeter))) {
- gtk_widget_queue_draw (GTK_WIDGET (vumeter));
- }
-}
-
-/**
- * gtk_vumeter_get_scale_items:
- * @param vumeter the vumeter widget
- * @return a GList of the pitch lines and labels (default:NULL)
- *
- * Get the scale pitch lines and labels, a GList containing %GtkVUMeterScaleItem items.
- * The returned GList must be freed with gtk_vumeter_free_scale_items() by the user!!!
- */
-GList *gtk_vumeter_get_scale_items(GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return NULL;
- } else {
- return gtk_vumeter_clone_scale_items(vumeter->scale_items);
- }
-}
-
-/**
- * gtk_vumeter_set_scale_hole_size:
- * @param vumeter the vumeter widget
- * @param hole_size (default:0)
- *
- * Set the size of the "holes" between the pitch lines.
- * A side effect: This also sets the minimum size of the widget.
- */
-void gtk_vumeter_set_scale_hole_size (GtkVUMeter *vumeter, gint hole_size)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- if (vumeter->scale_pitch_holes != hole_size) {
- vumeter->scale_pitch_holes = hole_size;
- gtk_widget_queue_resize (GTK_WIDGET (vumeter));
- }
-}
-
-/**
- * gtk_vumeter_get_scale_hole_size:
- * @param vumeter the vumeter widget
- * @return (default:0)
- *
- * Get the size of the "holes" between the pitch lines.
- */
-gint gtk_vumeter_get_scale_hole_size (GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return 0;
- } else {
- return vumeter->scale_pitch_holes;
- }
-}
-
-/**
- * gtk_vumeter_set_peak:
- * @param vumeter the vumeter widget
- * @param peak whether or not the peak indicator is drawn
- * @param redraw_rate the rate (in milliseconds) at which the peak indicator is redrawn
- *
- * Enables/Disables the peak meachanism and sets the redraw timeout to redraw_rate milliseconds.
- * The redraw operation is intelligent in that the widget is only redrawn
- * if the peak_level != level and peak == %TRUE.
- *
- * Hint: A good redraw_rate is 200ms (default: 0ms -> off)
- */
-void gtk_vumeter_set_peak (GtkVUMeter *vumeter, gboolean peak, guint redraw_rate)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- if (vumeter->peak != peak) {
- vumeter->peak = peak;
- gtk_widget_queue_draw (GTK_WIDGET (vumeter));
- }
-
- vumeter->peak_redraw_rate = redraw_rate;
-
- if(vumeter->peak_timeout) {
- g_source_remove(vumeter->peak_timeout);
- }
-
- if(redraw_rate != 0 && vumeter->peak) {
- vumeter->peak_timeout = g_timeout_add (redraw_rate, gtk_vumeter_redraw_timeout, vumeter);
- }
-}
-
-/**
- * gtk_vumeter_get_peak:
- * @param vumeter the vumeter widget
- * @param peak whether or not the peak indicator is drawn
- * @param redraw_rate the rate (in milliseconds) at which the peak indicator is redrawn
- *
- */
-void gtk_vumeter_get_peak (GtkVUMeter *vumeter, gboolean *peak, guint *redraw_rate)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- *peak = 0;
- *redraw_rate = 0;
- } else {
- *peak = vumeter->peak;
- *redraw_rate = vumeter->peak_redraw_rate;
- }
-}
-
-/**
- * gtk_vumeter_set_peak_hold_factor:
- * @param vumeter the vumeter widget
- * @param hold_factor number of redraw_rates to wait until peak indicator is decayed (default:0 -> off)
- *
- * Holds the peak indicator for a limited time at it's highest position.
- * The actual rate is dependent on the redraw_rate given to %gtk_vumeter_set_peak().
- *
- * Hint: For a VU meter, a good hold_factor is 7 with a redraw_rate of 200ms.
- */
-void gtk_vumeter_set_peak_hold_factor (GtkVUMeter *vumeter, gint hold_factor)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- if (vumeter->peak_hold_factor != hold_factor) {
- vumeter->peak_hold_factor = hold_factor;
- }
-}
-
-/**
- * gtk_vumeter_get_peak_hold_factor:
- * @param vumeter the vumeter widget
- * @return number of redraw_rates to wait until peak indicator is decayed (default:0 -> off)
- */
-gint gtk_vumeter_get_peak_hold_factor (GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return 0;
- } else {
- return vumeter->peak_hold_factor;
- }
-}
-
-/**
- * gtk_vumeter_set_peak_falloff:
- * @param vumeter the vumeter widget
- * @param peak_falloff controls the speed to the peak decay
- * @param user_rate pixels to reduce the peak level at each redraw_rate in GTK_VUMETER_PEAK_FALLOFF_USER mode, otherwise ignored
- *
- * Set the numbers of pixel reduced from the peak indicator each redraw_rate (after the hold period is over).
- * The peak_falloff will be around: SLOW:5%, MEDIUM:10%, FAST:20%, USER:user_rate
- * of the current range, reduced from peak at each redraw_rate (%gtk_vumeter_set_peak()).
- *
- * Hint: a user_rate of 0 can be used to hold the peak indicator at the highest position ever.
- */
-void gtk_vumeter_set_peak_falloff (GtkVUMeter *vumeter, GtkVUMeterPeakFalloff peak_falloff, guint user_rate)
-{
- gint range;
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- vumeter->peak_falloff_mode = CLAMP(peak_falloff, GTK_VUMETER_PEAK_FALLOFF_SLOW, GTK_VUMETER_PEAK_FALLOFF_USER);
- range = vumeter->level_max - vumeter->level_min;
-
- switch (peak_falloff) {
- case GTK_VUMETER_PEAK_FALLOFF_SLOW:
- vumeter->peak_falloff_rate = range/20;
- break;
- default:
- case GTK_VUMETER_PEAK_FALLOFF_MEDIUM:
- vumeter->peak_falloff_rate = range/10;
- break;
- case GTK_VUMETER_PEAK_FALLOFF_FAST:
- vumeter->peak_falloff_rate = range/5;
- break;
- case GTK_VUMETER_PEAK_FALLOFF_USER:
- vumeter->peak_falloff_rate = (gint)user_rate;
- break;
- }
-}
-
-/**
- * gtk_vumeter_get_peak_falloff:
- * @param vumeter the vumeter widget
- * @param peak_falloff controls the speed to the peak decay
- * @param user_rate pixels to lower the peak level each redraw_rate (value valid in every peak_falloff mode)
- */
-void gtk_vumeter_get_peak_falloff (GtkVUMeter *vumeter, GtkVUMeterPeakFalloff *peak_falloff, guint *user_rate)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- *peak_falloff = 0;
- *user_rate = 0;
- } else {
- *peak_falloff = vumeter->peak_falloff_mode;
- *user_rate = vumeter->peak_falloff_rate;
- }
-}
-
-/**
- * gtk_vumeter_set_colors_inverted:
- * @param vumeter the vumeter widget
- * @param inverted whether or not the colors are inverted (default:%FALSE)
- *
- * Usually the graph will be colored with: 0:green, half:yellow, full:red.
- * This is used to display signals that won't "work correct" above a maximum level
- * (e.g. audio signals may distort if their amplitude is too high).
- *
- * The inverted colors will be: 0:red, half:yellow, full:green.
- * This is used to display signals that need a minimum level to work correct
- * (e.g. a received antenna signal must have a minimum amplitude to "work correct").
- */
-void gtk_vumeter_set_colors_inverted (GtkVUMeter *vumeter, gboolean inverted)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- vumeter->colors_inverted = inverted;
- if (gtk_widget_get_realized(GTK_WIDGET(vumeter))) {
- gtk_vumeter_setup_colors (vumeter);
- gtk_widget_queue_draw (GTK_WIDGET (vumeter));
- }
-}
-
-/**
- * gtk_vumeter_get_colors_inverted:
- * @param vumeter the vumeter widget
- * @return whether or not the colors are inverted (default:%FALSE)
- */
-gboolean gtk_vumeter_get_colors_inverted (GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return 0;
- } else {
- return vumeter->colors_inverted;
- }
-}
-
-/**
- * gtk_vumeter_set_yellow_level:
- * @param vumeter the vumeter widget
- * @param yellow_level set the position of the yellow area (default:16383)
- *
- * Will be clamped between min and max.
- */
-void gtk_vumeter_set_yellow_level (GtkVUMeter *vumeter, gint yellow_level)
-{
- g_return_if_fail (GTK_IS_VUMETER (vumeter));
-
- vumeter->yellow_level = CLAMP (yellow_level, vumeter->level_min, vumeter->level_max);
- if (gtk_widget_get_realized(GTK_WIDGET(vumeter))) {
- gtk_vumeter_setup_colors (vumeter);
- gtk_widget_queue_draw (GTK_WIDGET (vumeter));
- }
-}
-
-/**
- * gtk_vumeter_get_yellow_level:
- * @param vumeter the vumeter widget
- * @return get the position of the yellow area (default:16383)
- */
-gint gtk_vumeter_get_yellow_level (GtkVUMeter *vumeter)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- return 0;
- } else {
- return vumeter->yellow_level;
- }
-}
-
-/**
- * gtk_vumeter_set_brightness:
- * @param vumeter the vumeter widget
- * @param foreground set the brightness of the graphs foreground (default:65535)
- * @param background set the brightness of the graphs background (default:49151)
- *
- * Hint: don't turn the brightness too low, otherwise you'll only see a black bar :-)
- */
-void gtk_vumeter_set_brightness (GtkVUMeter *vumeter, gint foreground, gint background)
-{
- vumeter->f_brightness = CLAMP(foreground, 0, 65535);
- vumeter->b_brightness = CLAMP(background, 0, vumeter->f_brightness);
- if (gtk_widget_get_realized(GTK_WIDGET(vumeter))) {
- gtk_vumeter_setup_colors (vumeter);
- gtk_widget_queue_draw (GTK_WIDGET (vumeter));
- }
-}
-
-/**
- * gtk_vumeter_get_brightness:
- * @param vumeter the vumeter widget
- * @param foreground get the brightness of the graphs foreground (default:65535)
- * @param background get the brightness of the graphs background (default:49151)
- */
-void gtk_vumeter_get_brightness (GtkVUMeter *vumeter, gint *foreground, gint *background)
-{
- if(!GTK_IS_VUMETER (vumeter)) {
- *foreground = 0;
- *background = 0;
- } else {
- *foreground = vumeter->f_brightness;
- *background = vumeter->b_brightness;
- }
-}
-
git.samba.org / metze / wireshark / wip.git / commitdiff