krell.c

系统任务管理器

	k->w = w_render;

	k->stencil = gdk_pixmap_new(top_win->window, _GK.chart_width,
					k->h_frame, 1);
	k->period = style->krell_ema_period;
	if (k->period >= 4 * _GK.update_HZ)
		k->period = 4 * _GK.update_HZ;

	k->x_position = -1;      /* Force initial draw   */
	k->full_scale_expand = 1;
	k->monotonic = TRUE;
	return k;
	}

void
gkrellm_monotonic_krell_values(GkrellmKrell *k, gboolean mono)
	{
	if (k)
		k->monotonic = mono;
	}

/* -------------------------------------------------------------- */

static void
remove_from_button_list(GkrellmPanel *p, GkrellmDecalbutton *b)
	{
	if (!p || !b)
		return;
	p->button_list = g_list_remove(p->button_list, b);
	g_free(b);

	if (!p->button_list && p->drawing_area)
		{
		g_signal_handler_disconnect(G_OBJECT(p->drawing_area), p->id_press);
		g_signal_handler_disconnect(G_OBJECT(p->drawing_area), p->id_release);
		g_signal_handler_disconnect(G_OBJECT(p->drawing_area), p->id_enter);
		g_signal_handler_disconnect(G_OBJECT(p->drawing_area), p->id_leave);
		p->button_signals_connected = FALSE;
		}
	}

void
gkrellm_move_decal(GkrellmPanel *p, GkrellmDecal *d, gint x, gint y)
	{
	if (!d || (d->x == x && d->y == y))
		return;
	if (!(d->flags & DF_MOVED))	/* If no intervening draw_panel_layers() */
		{						/* then preserve original old position   */
		d->x_old = d->x;
		d->y_old = d->y;
		}
	d->x = x;
	d->y = y;
	d->flags |= DF_MOVED;
	d->modified = TRUE;

	if (p)
		p->need_decal_overlap_check = TRUE;
	}

void
gkrellm_decal_on_top_layer(GkrellmDecal *d, gboolean top)
	{
	GkrellmPanel	*p = (GkrellmPanel *) d->panel;
	if (!d)
		return;
	if (top)
		d->flags |= DF_TOP_LAYER;
	else
		d->flags &= ~DF_TOP_LAYER;
	if (p)
		p->need_decal_overlap_check = TRUE;

	d->modified = TRUE;
	}

static void
_destroy_decal(GkrellmDecal *d)
	{
	if (!d)
		return;
	if ((d->flags & DF_LOCAL_PIXMAPS) && d->pixmap)
		g_object_unref(G_OBJECT(d->pixmap));
	if (d->stencil)
		g_object_unref(G_OBJECT(d->stencil));
	if (d->text_list)
		decal_text_list_free(&d->text_list);
	if (d->scroll_text)
		g_free(d->scroll_text);
	if (d->panel)
		((GkrellmPanel *)d->panel)->need_decal_overlap_check = TRUE;

	g_free(d);
	}

static void
_remove_decal(GkrellmPanel *p, GkrellmDecal *d)
	{
	if (!g_list_find(p->decal_list, d))
		return;
	p->decal_list = g_list_remove(p->decal_list, d);
	p->need_decal_overlap_check = TRUE;
	d->panel = NULL;
	if (p->pixmap && p->bg_pixmap)
		{
		gdk_draw_drawable(p->pixmap, _GK.draw1_GC, p->bg_pixmap,
				d->x, d->y,  d->x, d->y,   d->w, d->h);
		if (p->drawing_area && p->drawing_area->window)
			gdk_draw_drawable(p->drawing_area->window, _GK.draw1_GC,
					p->bg_pixmap, d->x, d->y,  d->x, d->y,   d->w, d->h);
		gkrellm_draw_panel_layers_force(p);
		}
	}

void
gkrellm_destroy_decal(GkrellmDecal *d)
	{
	GkrellmDecalbutton	*b;

	if (d && d->panel)
		{
		if ((b = gkrellm_decal_is_button(d)) != NULL)
			gkrellm_destroy_button(b);
		else
			{
			_remove_decal((GkrellmPanel *) d->panel, d);
			_destroy_decal(d);
			}
		}
	else
		_destroy_decal(d);
	}

void
gkrellm_remove_decal(GkrellmPanel *p, GkrellmDecal *d)
	{
	if (!p || !d || gkrellm_decal_is_button(d))
		return;
	_remove_decal(p, d);
	}

void
gkrellm_insert_decal(GkrellmPanel *p, GkrellmDecal *d, gboolean append)
	{
	if (!p || !d || g_list_find(p->decal_list, d))
		return;
	if (append)
		p->decal_list = g_list_append(p->decal_list, d);
	else
		p->decal_list = g_list_prepend(p->decal_list, d);
	d->panel = (gpointer) p;
	p->need_decal_overlap_check = TRUE;
	gkrellm_draw_panel_layers_force(p);
	}

void
gkrellm_insert_decal_nth(GkrellmPanel *p, GkrellmDecal *d, gint n)
	{
	if (!p || !d || g_list_find(p->decal_list, d))
		return;
	p->decal_list = g_list_insert(p->decal_list, d, n);
	d->panel = (gpointer) p;
	p->need_decal_overlap_check = TRUE;
	gkrellm_draw_panel_layers_force(p);
	}

void
gkrellm_destroy_decal_list(GkrellmPanel *p)
	{
	GkrellmDecalbutton	*b;
	GkrellmDecal		*d;
	GList				*list;

	if (!p)
		return;
	for (list = p->decal_list; list; list = list->next)
		{
		d = (GkrellmDecal *) list->data;
		if ((b = gkrellm_decal_is_button(d)) != NULL)
			remove_from_button_list(p, b);
		_destroy_decal(d);
		}
	if (p->decal_list)
		g_list_free(p->decal_list);
	p->decal_list = NULL;
	}

GkrellmDecal *
gkrellm_create_decal_pixmap(GkrellmPanel *p,
				GdkPixmap *pixmap, GdkBitmap *mask,
				gint depth, GkrellmStyle *style, gint x, gint y)
	{
	GtkWidget		*top_win;
	GkrellmMargin	*m;
	GkrellmDecal	*d;

	if (!pixmap)
		return NULL;
	top_win = gkrellm_get_top_window();
	d = (GkrellmDecal *) g_new0(GkrellmDecal, 1);
	if (p)
		{
		p->decal_list = g_list_append(p->decal_list, d);
		p->need_decal_overlap_check = TRUE;
		}
	d->panel = (gpointer) p;

	gdk_drawable_get_size(pixmap, &d->w, &d->h);
	if (depth > 0)
		d->h /= depth;
	if (d->h == 0)
		d->h = 1;

	d->x = x;
	m = gkrellm_get_style_margins(style);
	if (d->x < 0 && style)
		{
		if (   style->label_position < 50
			&& style->label_position != GKRELLM_LABEL_NONE
		   )
			d->x = _GK.chart_width - d->w - m->right;
		else
			d->x = m->left;
		}
	d->y = y;
	if (d->y < 0)
		d->y = m->top;

	d->pixmap = pixmap;
	d->mask   = mask;
	d->stencil = gdk_pixmap_new(top_win->window, d->w, d->h, 1);

	d->value = -1;		/* Force initial draw */
	d->flags = 0;
	d->state = DS_VISIBLE;
	return d;
	}

static GkrellmDecal *
_create_decal_text(GkrellmPanel *p, gchar *string,
				GkrellmTextstyle *ts, GkrellmStyle *style,
				gint x, gint y, gint w, gint h, gint y_ink, gboolean markup)
	{
	GtkWidget		*top_win;
	GkrellmMargin	*m;
	GkrellmDecal	*d;
	GkrellmText		*tx;
	gint			width, height, baseline;

	top_win = gkrellm_get_top_window();
	d = (GkrellmDecal *) g_new0(GkrellmDecal, 1);
	if (p)
		{
		p->decal_list = g_list_append(p->decal_list, d);
		p->need_decal_overlap_check = TRUE;
		}
	d->panel = (gpointer) p;

	d->text_style = ts ? *ts : *gkrellm_meter_textstyle(0);
	tx = g_new0(GkrellmText, 1);
	d->text_list = g_list_append(d->text_list, tx);
	gkrellm_dup_string(&tx->text, "");
	tx->text_style = d->text_style;

	if (string && *string)
		{
		if (markup)
			gkrellm_text_markup_extents(d->text_style.font,
					string, strlen(string),
					&width, &height, &baseline, &d->y_ink);
		else
			gkrellm_text_extents(d->text_style.font,
					string, strlen(string),
					&width, &height, &baseline, &d->y_ink);
		d->h = height + d->text_style.effect;
		}
	else
		{
		width = 2;
		d->h = h;
		d->y_ink = y_ink;
		}
	if (d->h <= 0)
		d->h = 2;

	/* Width defaults to full chart width
	|  minus borders unless w > 0, or w == 0 to use string width.
	*/
	if (style)
		{
		m = gkrellm_get_style_margins(style);
		if (w < 0)
			d->w = _GK.chart_width - m->left - m->right;
		else if (w == 0)
			d->w = width + d->text_style.effect;
		else
			d->w = w;

		d->x = (x >= 0) ? x : m->left;

		d->y = y;
		if (d->y < 0)
			d->y = m->top;
		}
	else
		{
		if (w < 0)
			d->w = _GK.chart_width;
		else if (w == 0)
			d->w = width;
		else
			d->w = w;
		d->x = x;
		d->y = y;
		}
	if (d->w == 0)
		d->w = 1;
	d->pixmap = gdk_pixmap_new(top_win->window, d->w, d->h, -1);;
	d->mask   = NULL;
	d->stencil = gdk_pixmap_new(top_win->window, d->w, d->h, 1);

	d->value = -1;		/* Force initial draw */
	d->flags = DF_LOCAL_PIXMAPS;
	d->state = DS_VISIBLE;

	return d;
	}

GkrellmDecal *
gkrellm_create_decal_text(GkrellmPanel *p, gchar *string,
				GkrellmTextstyle *ts, GkrellmStyle *style,
				gint x, gint y, gint w)
	{
	return _create_decal_text(p, string, ts, style, x, y, w, 0, 0, FALSE);
	}

GkrellmDecal *
gkrellm_create_decal_text_markup(GkrellmPanel *p, gchar *string,
				GkrellmTextstyle *ts, GkrellmStyle *style,
				gint x, gint y, gint w)
	{
	return _create_decal_text(p, string, ts, style, x, y, w, 0, 0, TRUE);
	}

GkrellmDecal *
gkrellm_create_decal_text_with_height(GkrellmPanel *p,
				GkrellmTextstyle *ts, GkrellmStyle *style,
				gint x, gint y, gint w, gint h, gint y_ink)
	{
	return _create_decal_text(p, NULL, ts, style, x, y, w, h, y_ink, FALSE);
	}

void
gkrellm_make_decal_invisible(GkrellmPanel *p, GkrellmDecal *d)
	{
	if (!p || !d || d->state == DS_INVISIBLE)
		return;
	d->state = DS_INVISIBLE;
	d->modified = TRUE;
	p->need_decal_overlap_check = TRUE;
	gkrellm_draw_panel_layers(p);
	}

void
gkrellm_make_decal_visible(GkrellmPanel *p, GkrellmDecal *d)
	{
	if (!p || !d || d->state == DS_VISIBLE)
		return;
	d->state = DS_VISIBLE;
	d->modified = TRUE;
	p->need_decal_overlap_check = TRUE;
	gkrellm_draw_panel_layers(p);
	}

gint
gkrellm_is_decal_visible(GkrellmDecal *d)
	{
	if (!d)
		return FALSE;
	return (d->state == DS_VISIBLE) ? TRUE : FALSE;
	}

/* ===================================================================== */
#define	AUTO_HIDE_BUTTON 	1


gboolean
gkrellm_in_decal(GkrellmDecal *d, GdkEventButton *ev)
	{
	if (!d || !ev)
		return FALSE;
	if (   ev->x >= d->x && ev->x < d->x + d->w
		&& ev->y >= d->y && ev->y < d->y + d->h
	   )
		return TRUE;
	return FALSE;
	}

static void
set_button_index(GkrellmDecalbutton *b, gint index, gint do_draw)
	{
	if (!b)
		return;
	gkrellm_draw_decal_pixmap(b->panel, b->decal, index);
	b->cur_index = index;
	if (do_draw)
		gkrellm_draw_panel_layers(b->panel);
	}

void
gkrellm_set_button_sensitive(GkrellmDecalbutton *b, gboolean sensitive)
	{
	if (b)
		b->sensitive = sensitive;
	}

void
gkrellm_hide_button(GkrellmDecalbutton *b)
	{
	if (!b)
		return;
	b->sensitive = FALSE;
	gkrellm_make_decal_invisible(b->panel, b->decal);
	}

void
gkrellm_show_button(GkrellmDecalbutton *b)
	{
	if (!b)
		return;
	b->sensitive = TRUE;
	gkrellm_make_decal_visible(b->panel, b->decal);
	}

gboolean
gkrellm_in_button(GkrellmDecalbutton *b, GdkEventButton *ev)
	{
	return gkrellm_in_decal(b->decal, ev);
	}

static gint
cb_decal_button_press(GtkWidget *widget, GdkEventButton *ev, GkrellmPanel *p)
	{
	GList				*list;
	GkrellmDecalbutton	*b;
	gboolean			stop_sig = FALSE;

	if (ev->type != GDK_BUTTON_PRESS)	/* I'm connected to "event" */
		return FALSE;
	for (list = p->button_list; list; list = list->next)
		{
		b = (GkrellmDecalbutton *) list->data;
		if (   b->sensitive && (*(b->cb_in_button))(b, ev, b->in_button_data)
			&& (   (b->cb_button_click && ev->button == 1)
				|| (b->cb_button_right_click && ev->button == 3)
			   )
		   )
			{
			if (b->cur_index != b->pressed_index)
				{
				b->saved_index = b->cur_index;
				set_button_index(b, b->pressed_index, 1);
				}
			stop_sig = TRUE;
			break;
			}
		}
	return stop_sig;
	}

static gint
cb_decal_button_release(GtkWidget *widget, GdkEventButton *ev, GkrellmPanel *p)
	{
	GList				*list;
	GkrellmDecalbutton	*b;
	gboolean			stop_sig = FALSE;

	if (ev->type != GDK_BUTTON_RELEASE)	/* I'm connected to "event" */
		return FALSE;
	for (list = p->button_list; list; list = list->next)
		{
		b = (GkrellmDecalbutton *) list->data;
		if (b->cur_index == b->pressed_index)
			{
			set_button_index(b, b->saved_index, 1);
			if ( (*(b->cb_in_button))(b, ev, b->in_button_data) )
				{
				if (b->cb_button_click && ev->button == 1)
					(*(b->cb_button_click))(b, b->data);
				else if (b->cb_button_right_click && ev->button == 3)
					(*(b->cb_button_right_click))(b, b->right_data);
				}
			stop_sig = TRUE;
		 	}
		}
	return stop_sig;
	}

static gint
cb_decal_button_leave(GtkWidget *widget, GdkEventButton *ev, GkrellmPanel *p)
	{
	GList				*list;
	GkrellmDecalbutton	*b;

	if (ev->type != GDK_LEAVE_NOTIFY)	/* I'm connected to "event" */
		return FALSE;
	for (list = p->button_list; list; list = list->next)
		{
		b = (GkrellmDecalbutton *) list->data;
		if (b->type == AUTO_HIDE_BUTTON)
			{
			if (b->sensitive)
				{
				set_button_index(b, 0, 0);
				b->decal->state = DS_INVISIBLE;
				b->decal->modified = TRUE;
				p->need_decal_overlap_check = TRUE;