diff options
Diffstat (limited to 'tests/test4/gtkvumeter.c')
| -rw-r--r-- | tests/test4/gtkvumeter.c | 501 |
1 files changed, 177 insertions, 324 deletions
diff --git a/tests/test4/gtkvumeter.c b/tests/test4/gtkvumeter.c index 2cc1b61..cb0f9d7 100644 --- a/tests/test4/gtkvumeter.c +++ b/tests/test4/gtkvumeter.c @@ -1,13 +1,4 @@ -/*************************************************************************** - * gtkvumeter.c - * - * Fri Jan 10 20:06:23 2003 - * Copyright 2003 Todd Goyen - * wettoad@knighthoodofbuh.org - ****************************************************************************/ - -#include <math.h> -#include <gtk/gtk.h> +#include <string.h> #include "gtkvumeter.h" #define MIN_HORIZONTAL_VUMETER_WIDTH 40 @@ -15,138 +6,142 @@ #define VERTICAL_VUMETER_WIDTH 20 #define MIN_VERTICAL_VUMETER_HEIGHT 40 -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_request (GtkWidget *widget, GtkRequisition *requisition); -static void gtk_vumeter_size_allocate (GtkWidget *widget, GtkAllocation *allocation); -static gint 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); +G_DEFINE_TYPE (GtkVuMeter, gtk_vu_meter, GTK_TYPE_DRAWING_AREA); static GdkColor default_f_gradient_keys[3] = {{0,65535,0,0},{0,65535,65535,0},{0,0,65535,0}}; static GdkColor default_b_gradient_keys[3] = {{0,49151,0,0},{0,49151,49151,0},{0,0,49151,0}}; -static GtkWidgetClass *parent_class = NULL; - - -GtkType 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, - }; - vumeter_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkVUMeter", &vumeter_info, 0); - } - - return vumeter_type; +static gboolean gtk_vu_meter_expose (GtkWidget *vumeter, GdkEventExpose *event); +static void gtk_vu_meter_setup_colors (GtkVuMeter *vumeter); +static void gtk_vu_meter_free_colors (GtkVuMeter *vumeter); +static void free_drawbuf(guchar *pixels, gpointer data); +static void gtk_vu_meter_size_request (GtkWidget *widget, GtkRequisition *requisition); +static void gtk_vu_meter_size_allocate (GtkWidget *widget, GtkAllocation *allocation); +static gint gtk_vu_meter_sound_level_to_draw_level (GtkVuMeter *vumeter); + +static void gtk_vu_meter_class_init (GtkVuMeterClass *class) { + GtkWidgetClass *widget_class; + widget_class = GTK_WIDGET_CLASS (class); + widget_class->expose_event = gtk_vu_meter_expose; + widget_class->size_request = gtk_vu_meter_size_request; + widget_class->size_allocate = gtk_vu_meter_size_allocate; } -GtkWidget* gtk_vumeter_new (gboolean vertical) -{ - GtkVUMeter *vumeter; - vumeter = gtk_type_new (GTK_TYPE_VUMETER); - vumeter->vertical = vertical; - return GTK_WIDGET (vumeter); +static void gtk_vu_meter_init (GtkVuMeter *vumeter) { + vumeter->vertical=TRUE; + gtk_vu_meter_set_gradient(vumeter, 3, default_f_gradient_keys, 3, default_b_gradient_keys); + gtk_vu_meter_setup_colors(vumeter); } -static void gtk_vumeter_init (GtkVUMeter *vumeter) -{ - vumeter->colormap = NULL; - vumeter->colors = 0; - vumeter->f_gc = NULL; - vumeter->b_gc = NULL; - vumeter->f_colors = NULL; - vumeter->b_colors = NULL; - - vumeter->level = 0; - vumeter->min = 0; - vumeter->max = 32767; - vumeter->peaks_falloff = GTK_VUMETER_PEAKS_FALLOFF_MEDIUM; - vumeter->peak_level = 0; - - vumeter->scale = GTK_VUMETER_SCALE_LINEAR; +void gtk_vu_meter_set_gradient (GtkVuMeter *vumeter, gint f_gradient_key_count, GdkColor *f_gradient_keys, gint b_gradient_key_count, GdkColor *b_gradient_keys) { + //XXX : memdup is a bad idea ? + GdkColor *fgk = g_memdup(f_gradient_keys, f_gradient_key_count*sizeof(GdkColor)); + GdkColor *bgk = g_memdup(b_gradient_keys, b_gradient_key_count*sizeof(GdkColor)); + g_return_if_fail (fgk != NULL); + g_return_if_fail (bgk != NULL); - //XXX A bit heavy... - gtk_vumeter_set_gradient(vumeter, 3, default_f_gradient_keys, 3, default_b_gradient_keys); + vumeter->f_gradient_keys = fgk; + vumeter->f_gradient_key_count=f_gradient_key_count; + vumeter->b_gradient_keys = bgk; + vumeter->b_gradient_key_count=b_gradient_key_count; } - -static void gtk_vumeter_class_init (GtkVUMeterClass *class) -{ - GtkObjectClass *object_class; - GtkWidgetClass *widget_class; - - object_class = (GtkObjectClass*) class; - widget_class = (GtkWidgetClass*) class; - parent_class = gtk_type_class(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_vu_meter_free_colors (GtkVuMeter *vumeter) { + // TODO : free pixmaps } -static void gtk_vumeter_destroy (GtkObject *object) -{ - GtkVUMeter *vumeter = GTK_VUMETER (object); - - 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; - - g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_VUMETER (widget)); - - GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); - vumeter = GTK_VUMETER (widget); - - attributes.x = widget->allocation.x; - attributes.y = widget->allocation.y; - attributes.width = widget->allocation.width; - attributes.height = widget->allocation.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; - widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask); - - widget->style = gtk_style_attach (widget->style, widget->window); - - gdk_window_set_user_data (widget->window, widget); - gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL); - - /* colors */ - vumeter->colormap = gdk_colormap_get_system (); - gtk_vumeter_setup_colors (vumeter); +static void gtk_vu_meter_setup_colors (GtkVuMeter *vumeter) { + + gint i,j; + guchar *f_drawbuf, *b_drawbuf, f_r, f_g, f_b, b_r, b_g, b_b; + gint f_key_len, b_key_len; + gint f_key_i, b_key_i; + gdouble f_key_pos, b_key_pos; + GdkColor *fgk, *bgk; + + gint h=GTK_WIDGET(vumeter)->allocation.height; + gint w=GTK_WIDGET(vumeter)->allocation.width; + + // Clean every previous colors and buffers + gtk_vu_meter_free_colors (vumeter); + + if (vumeter->vertical == TRUE) { + vumeter->colors = MAX(h, 0); + } else { + vumeter->colors = MAX(w, 0); + } + + // Allocate a memory buffers to hold the gradients + f_drawbuf=g_malloc(h*w*3); + b_drawbuf=g_malloc(h*w*3); + g_return_if_fail (f_drawbuf != NULL); + g_return_if_fail (b_drawbuf != NULL); + + // Compute some values before looping for gradient generation + f_key_len = vumeter->colors / (vumeter->f_gradient_key_count-1) + 1; + b_key_len = vumeter->colors / (vumeter->b_gradient_key_count-1) + 1; + fgk=vumeter->f_gradient_keys; + bgk=vumeter->b_gradient_keys; + + for (i=0; i<vumeter->colors; i++) { + // Compute the current position in the gradient keys + f_key_i=i/f_key_len; + f_key_pos=((gdouble) (i%f_key_len)/f_key_len); + b_key_i=i/f_key_len; + b_key_pos=((gdouble) (i%b_key_len)/b_key_len); + + /* Generate the Colours */ + /* foreground */ + f_r = ( fgk[f_key_i].red*(1.0-f_key_pos) + fgk[f_key_i+1].red*f_key_pos ) / 256; + f_g = ( fgk[f_key_i].green*(1.0-f_key_pos) + fgk[f_key_i+1].green*f_key_pos ) / 256; + f_b = ( fgk[f_key_i].blue*(1.0-f_key_pos) + fgk[f_key_i+1].blue*f_key_pos ) / 256; + /* background */ + b_r = ( bgk[b_key_i].red*(1.0-b_key_pos) + bgk[b_key_i+1].red*b_key_pos ) / 256; + b_g = ( bgk[b_key_i].green*(1.0-b_key_pos) + bgk[b_key_i+1].green*b_key_pos ) / 256; + b_b = ( bgk[b_key_i].blue*(1.0-b_key_pos) + bgk[b_key_i+1].blue*b_key_pos ) / 256; + + /* Apply the color in the drawbufs */ + if (vumeter->vertical == TRUE) { + // Vertical mode : draw directly the whole line of identical color + for (j=3*w*i; j<3*w*(i+1); ) { + f_drawbuf[j++]=f_r; + f_drawbuf[j++]=f_g; + f_drawbuf[j++]=f_b; + } + for (j=3*w*i; j<3*w*(i+1); ) { + b_drawbuf[j++]=b_r; + b_drawbuf[j++]=b_g; + b_drawbuf[j++]=b_b; + } + } else { + // Horiziontal mode : draw only the first line (color change at each pixel) + // Others line will be duplicated at the end + f_drawbuf[i]=f_r; + f_drawbuf[i+1]=f_g; + f_drawbuf[i+2]=f_b; + b_drawbuf[i]=b_r; + b_drawbuf[i+1]=b_g; + b_drawbuf[i+2]=b_b; + } + } + if (vumeter->vertical != TRUE) { + // Duplicate the first line over the others + for (j=1; j<h; j++) { + memcpy(f_drawbuf, f_drawbuf+3*w*j, w); + } + } + + vumeter->f_pixbuf = gdk_pixbuf_new_from_data(f_drawbuf, GDK_COLORSPACE_RGB, FALSE, 8, w, h, w*3, free_drawbuf, NULL); + vumeter->b_pixbuf = gdk_pixbuf_new_from_data(b_drawbuf, GDK_COLORSPACE_RGB, FALSE, 8, w, h, w*3, free_drawbuf, NULL); } -static void gtk_vumeter_size_request (GtkWidget *widget, GtkRequisition *requisition) +static void gtk_vu_meter_size_request (GtkWidget *widget, GtkRequisition *requisition) { - GtkVUMeter *vumeter; + GtkVuMeter *vumeter; - g_return_if_fail (GTK_IS_VUMETER (widget)); + g_return_if_fail (GTK_IS_VU_METER (widget)); g_return_if_fail (requisition != NULL); - vumeter = GTK_VUMETER (widget); + vumeter = GTK_VU_METER (widget); if (vumeter->vertical == TRUE) { requisition->width = VERTICAL_VUMETER_WIDTH; @@ -157,16 +152,16 @@ static void gtk_vumeter_size_request (GtkWidget *widget, GtkRequisition *requisi } } -static void gtk_vumeter_size_allocate (GtkWidget *widget, GtkAllocation *allocation) +static void gtk_vu_meter_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { - GtkVUMeter *vumeter; + GtkVuMeter *vumeter; g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_VUMETER (widget)); + g_return_if_fail (GTK_IS_VU_METER (widget)); g_return_if_fail (allocation != NULL); widget->allocation = *allocation; - vumeter = GTK_VUMETER (widget); + vumeter = GTK_VU_METER (widget); if (GTK_WIDGET_REALIZED (widget)) { if (vumeter->vertical == TRUE) { /* veritcal */ @@ -177,183 +172,75 @@ static void gtk_vumeter_size_allocate (GtkWidget *widget, GtkAllocation *allocat MAX(allocation->width, MIN_HORIZONTAL_VUMETER_WIDTH), HORIZONTAL_VUMETER_HEIGHT); } /* Fix the colours */ - gtk_vumeter_setup_colors (vumeter); + gtk_vu_meter_setup_colors (vumeter); } } -static gint gtk_vumeter_expose (GtkWidget *widget, GdkEventExpose *event) -{ - GtkVUMeter *vumeter; - gint index, level; - gint width, height; - - g_return_val_if_fail (widget != NULL, FALSE); - g_return_val_if_fail (GTK_IS_VUMETER (widget), FALSE); - g_return_val_if_fail (event != NULL, FALSE); +static void free_drawbuf(guchar *pixels, gpointer data) { + g_free(pixels); +} - if (event->count > 0) - return FALSE; +static gboolean gtk_vu_meter_expose (GtkWidget *vumeter, GdkEventExpose *event) { + //gdk_pixbuf_render_to_drawable(pixbuf, dbuf_pixmap, app->style->fg_gc[GTK_STATE_NORMAL], 0, 0, 0, 0, WIDTH, HEIGHT, GDK_RGB_DITHER_NORMAL, 0, 0); + cairo_t *cr; + gint draw_level = gtk_vu_meter_sound_level_to_draw_level(GTK_VU_METER(vumeter)); + + cr = gdk_cairo_create (vumeter->window); - vumeter = GTK_VUMETER (widget); - level = gtk_vumeter_sound_level_to_draw_level (vumeter); + // set a clip region for the expose event + cairo_rectangle (cr,event->area.x, event->area.y, event->area.width, event->area.height); + cairo_clip(cr); - if (vumeter->vertical == TRUE) { - width = widget->allocation.width - 2; - height = widget->allocation.height; - - /* draw border */ - gtk_paint_box (widget->style, widget->window, GTK_STATE_NORMAL, GTK_SHADOW_IN, - NULL, widget, "trough", 0, 0, widget->allocation.width, height); - /* draw background gradient */ - for (index = 0; index < level; index++) { - gdk_draw_line (widget->window, vumeter->b_gc[index], 1, index + 1, width, index + 1); - } - /* draw foreground gradient */ - for (index = level; index < height - 2; index++) { - gdk_draw_line (widget->window, vumeter->f_gc[index], 1, index + 1, width, index + 1); - } - } else { /* Horizontal */ - width = widget->allocation.width; - height = widget->allocation.height - 2; - - /* draw border */ - gtk_paint_box (widget->style, widget->window, GTK_STATE_NORMAL, GTK_SHADOW_IN, - NULL, widget, "trough", 0, 0, width, widget->allocation.height); - /* draw background gradient */ - for (index = 0; index < level; index++) { - gdk_draw_line (widget->window, vumeter->b_gc[index], index + 1, 1, index + 1, height); - } - /* draw foreground gradient */ - for (index = level; index < height - 2; index++) { - gdk_draw_line (widget->window, vumeter->f_gc[index], index + 1, 1, index + 1, height); - } - } + // Paint from the stored gradient + gdk_cairo_set_source_pixbuf(cr, GTK_VU_METER(vumeter)->b_pixbuf,0,0); + cairo_paint(cr); - return FALSE; -} + // set a clip region for the expose event + if (GTK_VU_METER(vumeter)->vertical==TRUE) { + cairo_rectangle (cr,event->area.x, event->area.y+draw_level, event->area.width, event->area.height-draw_level); + } else { + //TODO + cairo_rectangle (cr,event->area.x, event->area.y, event->area.width, 12/*event->area.height*/); + } + cairo_clip(cr); -static void gtk_vumeter_free_colors (GtkVUMeter *vumeter) -{ - gint index; - - /* 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; - } + // Paint from the stored gradient + gdk_cairo_set_source_pixbuf(cr, GTK_VU_METER(vumeter)->f_pixbuf,0,0); + cairo_paint(cr); + + cairo_destroy(cr); + + return FALSE; } -static void gtk_vumeter_setup_colors (GtkVUMeter *vumeter) -{ - gint index; - gint max; - gint f_key_len, b_key_len; - gint f_key_index, b_key_index; - gdouble f_key_pos, b_key_pos; - GdkColor *fgk, *bgk; - - g_return_if_fail (vumeter->colormap != NULL); - - gtk_vumeter_free_colors (vumeter); - - /* Set new size */ - if (vumeter->vertical == TRUE) { - vumeter->colors = MAX(GTK_WIDGET(vumeter)->allocation.height - 2, 0); - } else { - vumeter->colors = MAX(GTK_WIDGET(vumeter)->allocation.width - 2, 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 */ - - max=vumeter->colors; - f_key_len = max / (vumeter->f_gradient_key_count-1) + 1; - b_key_len = max / (vumeter->b_gradient_key_count-1) + 1; - fgk=vumeter->f_gradient_keys; - bgk=vumeter->b_gradient_keys; - - for (index = 0; index < max; index++) { - f_key_index=index/f_key_len; - f_key_pos=((gdouble) (index%f_key_len)/f_key_len); - b_key_index=index/f_key_len; - b_key_pos=((gdouble) (index%b_key_len)/b_key_len); - - /* Generate the Colours */ - /* foreground */ - vumeter->f_colors[index].red = fgk[f_key_index].red*(1.0-f_key_pos) + fgk[f_key_index+1].red*f_key_pos; - vumeter->f_colors[index].green = fgk[f_key_index].green*(1.0-f_key_pos) + fgk[f_key_index+1].green*f_key_pos; - vumeter->f_colors[index].blue = fgk[f_key_index].blue*(1.0-f_key_pos) + fgk[f_key_index+1].blue*f_key_pos; - /* background */ - vumeter->b_colors[index].red = bgk[b_key_index].red*(1.0-b_key_pos) + bgk[b_key_index+1].red*b_key_pos; - vumeter->b_colors[index].green = bgk[b_key_index].green*(1.0-b_key_pos) + bgk[b_key_index+1].green*b_key_pos; - vumeter->b_colors[index].blue = bgk[b_key_index].blue*(1.0-b_key_pos) + bgk[b_key_index+1].blue*b_key_pos; - - /* Allocate the Colours */ - /* foreground */ - //TODO : try to use gdk_colormap_alloc_colors or suppress f_colors array - gdk_colormap_alloc_color (vumeter->colormap, &vumeter->f_colors[index], FALSE, TRUE); - vumeter->f_gc[index] = gdk_gc_new(GTK_WIDGET(vumeter)->window); - 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(vumeter)->window); - gdk_gc_set_foreground(vumeter->b_gc[index], &vumeter->b_colors[index]); - } +static gint gtk_vu_meter_sound_level_to_draw_level (GtkVuMeter *vumeter) { + gint draw_level; + gdouble level, min, max, height; + + level = (gdouble)vumeter->level; + min = (gdouble)vumeter->min; + max = (gdouble)vumeter->max; + height = (gdouble)vumeter->colors; + + draw_level = (1.0 - (level - min)/(max - min)) * height; + + //printf("1.0 - (%lf - %lf)/(%lf - %lf)) * %lf => %i\n", level, min, max, min, height, draw_level); + + return draw_level; } -static gint gtk_vumeter_sound_level_to_draw_level (GtkVUMeter *vumeter) -{ - gdouble draw_level; - gdouble level, min, max, height; - gdouble log_level, log_max; - - level = (gdouble)vumeter->level; - min = (gdouble)vumeter->min; - max = (gdouble)vumeter->max; - height = (gdouble)vumeter->colors; - - if (vumeter->scale == GTK_VUMETER_SCALE_LINEAR) { - draw_level = (1.0 - (level - min)/(max - min)) * height; - } else { - log_level = log10((level - min + 1)/(max - min + 1)); - log_max = log10(1/(max - min + 1)); - draw_level = log_level/log_max * height; - } - - return ((gint)draw_level); +GtkWidget * gtk_vu_meter_new (gboolean vertical) { + GtkWidget *vumeter = g_object_new (GTK_TYPE_VU_METER, NULL); + GTK_VU_METER(vumeter)->vertical=vertical; + GTK_VU_METER(vumeter)->level=0; + GTK_VU_METER(vumeter)->min=-32767; + GTK_VU_METER(vumeter)->max=32767; } -void gtk_vumeter_set_min_max (GtkVUMeter *vumeter, gint min, gint max) + +void gtk_vu_meter_set_min_max (GtkVuMeter *vumeter, gint min, gint max) { g_return_if_fail (vumeter != NULL); - g_return_if_fail (GTK_IS_VUMETER (vumeter)); vumeter->max = MAX(max, min); vumeter->min = MIN(min, max); @@ -364,45 +251,11 @@ void gtk_vumeter_set_min_max (GtkVUMeter *vumeter, gint min, gint max) gtk_widget_queue_draw (GTK_WIDGET(vumeter)); } -void gtk_vumeter_set_level (GtkVUMeter *vumeter, gint level) +void gtk_vu_meter_set_level(GtkVuMeter *vumeter, gint level) { g_return_if_fail (vumeter != NULL); - g_return_if_fail (GTK_IS_VUMETER (vumeter)); vumeter->level = CLAMP (level, vumeter->min, vumeter->max); gtk_widget_queue_draw (GTK_WIDGET(vumeter)); } -void gtk_vumeter_set_peaks_falloff (GtkVUMeter *vumeter, gint peaks_falloff) -{ - g_return_if_fail (vumeter != NULL); - g_return_if_fail (GTK_IS_VUMETER (vumeter)); -} - -void gtk_vumeter_set_scale (GtkVUMeter *vumeter, gint scale) -{ - g_return_if_fail (vumeter != NULL); - g_return_if_fail (GTK_IS_VUMETER (vumeter)); - - if (scale != vumeter->scale) { - vumeter->scale = CLAMP(scale, GTK_VUMETER_SCALE_LINEAR, GTK_VUMETER_SCALE_LAST - 1); - if (GTK_WIDGET_REALIZED(vumeter)) { - gtk_vumeter_setup_colors (vumeter); - gtk_widget_queue_draw (GTK_WIDGET(vumeter)); - } - } -} - -void gtk_vumeter_set_gradient (GtkVUMeter *vumeter, gint f_gradient_key_count, GdkColor *f_gradient_keys, gint b_gradient_key_count, GdkColor *b_gradient_keys) { - //XXX : memdup is a bad idea ? - GdkColor *fgk = g_memdup(f_gradient_keys, f_gradient_key_count*sizeof(GdkColor)); - GdkColor *bgk = g_memdup(b_gradient_keys, b_gradient_key_count*sizeof(GdkColor)); - g_return_if_fail (fgk != NULL); - g_return_if_fail (bgk != NULL); - - vumeter->f_gradient_keys = fgk; - vumeter->f_gradient_key_count=f_gradient_key_count; - vumeter->b_gradient_keys = bgk; - vumeter->b_gradient_key_count=b_gradient_key_count; -} - |