krell.c

系统任务管理器

				gkrellm_draw_panel_layers(p);
				}
			}
		else
			if (b->cur_index == b->pressed_index)
				set_button_index(b, b->saved_index, 1);
		}
	return FALSE;
	}

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

	if (ev->type != GDK_ENTER_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 || ! b->sensitive)
			continue;
		b->decal->state = DS_VISIBLE;
		set_button_index(b, 0, 0);
		b->decal->modified = TRUE;
		p->need_decal_overlap_check = TRUE;
		gkrellm_draw_panel_layers(b->panel);
		}
	return FALSE;
	}

void
gkrellm_set_decal_button_index(GkrellmDecalbutton *b, gint index)
	{
	if (!b)
		return;
	if (b->cur_index == b->pressed_index)
		b->saved_index = index;	/* Throw away old save */
	else
		set_button_index(b, index, 0);
	}

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

	if ((p = (GkrellmPanel *) d->panel) == NULL)
		return NULL;
	for (list = p->button_list; list; list = list->next)
		{
		b = (GkrellmDecalbutton *) list->data;
		if (b->decal == d)
			return b;
		}
	return NULL;
	}

void
gkrellm_destroy_button(GkrellmDecalbutton *b)
	{
	GkrellmPanel	*p;

	if (!b)
		return;
	p = b->panel;
	if (p && b->decal)
		_remove_decal(p, b->decal);
	if (b->decal)
		_destroy_decal(b->decal);
	remove_from_button_list(p, b);
	}


void
gkrellm_set_in_button_callback(GkrellmDecalbutton *b,
			gint (*func)(), gpointer data)
	{
	if (!b)
		return;
	b->cb_in_button = func;
	b->in_button_data = data;
	}

void
gkrellm_decal_button_connect(GkrellmDecalbutton *b, void (*func)(), void *data)
	{
	if (!b)
		return;
	b->data = data;
	b->cb_button_click = func;
	}

void
gkrellm_decal_button_right_connect(GkrellmDecalbutton *b,
				void (*func)(), void *data)
	{
	if (!b)
		return;
	b->right_data = data;
	b->cb_button_right_click = func;
	}

void
gkrellm_panel_button_signals_connect(GkrellmPanel *p)
	{
	/* I want DecalButton event handlers to be called before any monitor
	|  handlers, but DecalButtons will be recreated at theme changes and
	|  thus its handlers will be after panel handlers. So, connect to
	|  "event" which is called first, and check for the right event in
	|  the callback.
	|  There is only one event handler per signal per panel.  Buttons do
	|  not have their own event box so they may be efficiently animated.
	*/
	if (   !p || p->button_signals_connected
		|| !p->button_list || !p->drawing_area
	   )
		return;
	p->id_press = g_signal_connect(G_OBJECT(p->drawing_area),
				"event", G_CALLBACK(cb_decal_button_press), p);
	p->id_release = g_signal_connect(G_OBJECT(p->drawing_area),
				"event", G_CALLBACK(cb_decal_button_release), p);
	p->id_enter = g_signal_connect(G_OBJECT(p->drawing_area),
				"event", G_CALLBACK(cb_decal_button_enter), p);
	p->id_leave = g_signal_connect(G_OBJECT(p->drawing_area),
				"event", G_CALLBACK(cb_decal_button_leave), p);
	p->button_signals_connected = TRUE;
	}

  /* Make an existing decal into a decal button.  The decal should already
  |  be created and be in the panel's decal list.
  */
GkrellmDecalbutton *
gkrellm_make_decal_button(GkrellmPanel *p, GkrellmDecal *d, void (*func)(),
			void *data, gint cur_index, gint pressed_index)
	{
	GkrellmDecalbutton	*b;

	if (!p || !d)
		return NULL;
	b = g_new0(GkrellmDecalbutton, 1);
	b->panel = p;
	b->decal = d;
	b->pressed_index = pressed_index;
	b->data = data;
	b->cb_button_click = func;
	b->cb_in_button = gkrellm_in_button;
	b->in_button_data = NULL;
	b->sensitive = TRUE;
	set_button_index(b, cur_index, 0);

	p->button_list = g_list_append(p->button_list, b);
	gkrellm_panel_button_signals_connect(p);
	p->need_decal_overlap_check = TRUE;

	return b;
	}


GkrellmDecalbutton *
gkrellm_make_overlay_button(GkrellmPanel *p, void (*func)(), void *data,
				gint x, gint y, gint w, gint h,
				GkrellmPiximage *normal_piximage,
				GkrellmPiximage *pressed_piximage)
	{
	GtkWidget			*top_win;
	GkrellmDecalbutton	*b;
	GkrellmDecal		*d;
	GdkPixmap			*pm = NULL, *pixmap;
	GdkBitmap			*m = NULL, *mask;

	if (!p)
		return NULL;
	top_win = gkrellm_get_top_window();
	if (x < 0)
		{
		w -= x;
		x = 0;
		}
	if (y < 0)
		{
		h -= y;
		y = 0;
		}
	if (x + w > _GK.chart_width)
		w = _GK.chart_width - x;
	if (p->h > 0 && y + h > p->h)
		h = p->h - y;
	if (h < 2)
		h = 2;
	if (w < 4)
		w = 4;

	pixmap = gdk_pixmap_new(top_win->window, w, 2 * h, -1);
	mask = gdk_pixmap_new(top_win->window, w, 2 * h, 1);

	if (normal_piximage && pressed_piximage)
		{
		gkrellm_scale_piximage_to_pixmap(normal_piximage, &pm, &m, w, h);
		gdk_draw_drawable(pixmap, _GK.draw1_GC, pm, 0, 0, 0, 0, w, h);
		if (m)
			gdk_draw_drawable(mask, _GK.bit1_GC, m, 0, 0, 0, 0, w, h);
		else
			gdk_draw_rectangle(mask, _GK.bit1_GC, TRUE, 0, 0, w, h);
		gkrellm_free_pixmap(&pm);
		gkrellm_free_bitmap(&m);

		gkrellm_scale_piximage_to_pixmap(pressed_piximage, &pm, &m, w, h);
		gdk_draw_drawable(pixmap, _GK.draw1_GC, pm, 0, 0, 0, h, w, h);
		if (m)
			gdk_draw_drawable(mask, _GK.bit1_GC, m, 0, 0, 0, h, w, h);
		else
			gdk_draw_rectangle(mask, _GK.bit1_GC, TRUE, 0, h, w, h);
		gkrellm_free_pixmap(&pm);
		gkrellm_free_bitmap(&m);
		}
	else	/* Make a default frame. */
		{
		GdkColor	gray0, gray1;
		GdkColormap	*cmap;

		cmap = gdk_colormap_get_system();
		gdk_color_parse("gray65", &gray0);
		gdk_color_parse("gray100", &gray1);
		gdk_colormap_alloc_color(cmap, &gray0, FALSE, TRUE);
		gdk_colormap_alloc_color(cmap, &gray1, FALSE, TRUE);

		gdk_gc_set_foreground(_GK.draw1_GC, &gray1);
		gdk_draw_line(pixmap, _GK.draw1_GC, 0, 0, w - 1, 0);		
		gdk_draw_line(pixmap, _GK.draw1_GC, 0, 0, 0, h - 1);		
		gdk_draw_line(pixmap, _GK.draw1_GC, 0, 2 * h - 1, w - 1, 2 * h - 1);
		gdk_draw_line(pixmap, _GK.draw1_GC, w - 1, 2 * h - 1, w - 1, h);

		gdk_gc_set_foreground(_GK.draw1_GC, &gray0);
		gdk_draw_line(pixmap, _GK.draw1_GC, 0, h - 1, w - 1, h - 1);		
		gdk_draw_line(pixmap, _GK.draw1_GC, w - 1, h - 1, w - 1, 0);		
		gdk_draw_line(pixmap, _GK.draw1_GC, 0, h, w - 1, h);		
		gdk_draw_line(pixmap, _GK.draw1_GC, 0, h, 0, 2 * h - 1);		

		gdk_draw_rectangle(mask, _GK.bit1_GC, TRUE, 0, 0, w, 2 * h);		
		gdk_draw_rectangle(mask, _GK.bit0_GC, TRUE, 1, 1, w - 2, h - 2);
		gdk_draw_rectangle(mask, _GK.bit0_GC, TRUE, 1, h + 1, w - 2, h - 2);

		gdk_colormap_free_colors(cmap, &gray0, 1);
		gdk_colormap_free_colors(cmap, &gray1, 1);
		}

	d = gkrellm_create_decal_pixmap(p, pixmap, mask, 2, NULL, x, y);
	d->flags |= (DF_LOCAL_PIXMAPS | DF_OVERLAY_PIXMAPS);
	d->state = DS_INVISIBLE;

	b = gkrellm_make_decal_button(p, d, func, data, 0, 1);
	b->type = AUTO_HIDE_BUTTON;

	return b;
	}

GkrellmDecalbutton *
gkrellm_put_decal_in_panel_button(GkrellmPanel *p, GkrellmDecal *d,
			void (*func)(), void *data, GkrellmMargin *margin_pad)
	{
	GkrellmDecalbutton	*b;
	GkrellmBorder		*border;
	GkrellmMargin		*margin;
	gint				x, y, w, h, a;

	if (!p || !d)
		return NULL;
	border = &_GK.button_panel_border;
	margin = margin_pad ? margin_pad : &zero_margin;

	x = d->x - border->left - margin->left;
	a = d->x + d->w + border->right + margin->right;
	w = a - x;

	y = d->y - border->top - margin->top;
	a = d->y + d->h + border->bottom + margin->bottom;
	h = a - y;

	b = gkrellm_make_overlay_button(p, func, data, x, y, w, h,
				_GK.button_panel_out_piximage, _GK.button_panel_in_piximage);
	return b;
	}

GkrellmDecalbutton *
gkrellm_put_decal_in_meter_button(GkrellmPanel *p, GkrellmDecal *d,
			void (*func)(), void *data, GkrellmMargin *margin_pad)
	{
	GkrellmDecalbutton	*b;
	GkrellmBorder		*border;
	GkrellmMargin		*margin;
	gint				x, y, w, h, a;

	if (!p || !d)
		return NULL;
	border = &_GK.button_meter_border;
	margin = margin_pad ? margin_pad : &zero_margin;

	x = d->x - border->left - margin->left;
	a = d->x + d->w + border->right + margin->right;
	w = a - x;

	y = d->y - border->top - margin->top;
	a = d->y + d->h + border->bottom + margin->bottom;
	h = a - y;

	b = gkrellm_make_overlay_button(p, func, data, x, y, w, h,
				_GK.button_meter_out_piximage, _GK.button_meter_in_piximage);
	return b;
	}


static GkrellmDecalbutton *
put_label_in_button(GkrellmPanel *p, void (*func)(), void *data, gint type,
			gint pad)
	{
	GkrellmDecalbutton	*b;
	GkrellmLabel		*lbl;
	GkrellmMargin		*m;
	GkrellmPiximage		*normal_piximage, *pressed_piximage;
	GkrellmBorder		*style_border, *fr_border;
	gint				x, y, w, h;

	if (!p || p->h == 0)
		return NULL;

	fr_border = (type == METER_PANEL_TYPE) ? &_GK.button_meter_border
										: &_GK.button_panel_border;
	normal_piximage = (type == METER_PANEL_TYPE)
			? _GK.button_meter_out_piximage : _GK.button_panel_out_piximage;
	pressed_piximage = (type == METER_PANEL_TYPE)
			? _GK.button_meter_in_piximage : _GK.button_panel_in_piximage;

	/* If no panel label, put the whole panel in the button.
	*/
	if ((lbl = p->label) == NULL || lbl->string == NULL || lbl->position < 0)
		{
		m = gkrellm_get_style_margins(p->style);
		style_border = p->style ? &p->style->border : &zero_border;
		x = 0 + m->left;
		y = 0 + style_border->top - fr_border->top;
		w = p->w - x - m->right;
		h = p->h - y - style_border->bottom + fr_border->bottom;
		}
	else
		{
		x = lbl->x_panel - fr_border->left - pad;
		y = lbl->y_panel - fr_border->top;
		w = lbl->width + fr_border->left + fr_border->right + 2 * pad;
		h = lbl->height + (p->textstyle->effect ? 1 : 0)
				+ fr_border->top + fr_border->bottom;
		}
	b = gkrellm_make_overlay_button(p, func, data, x, y, w, h,
					normal_piximage, pressed_piximage);
	return b;
	}


GkrellmDecalbutton *
gkrellm_put_label_in_panel_button(GkrellmPanel *p, void (*func)(), void *data,
				gint pad)
	{
	GkrellmDecalbutton	*b;

	b = put_label_in_button(p, func, data, CHART_PANEL_TYPE, pad);
	return b;
	}


GkrellmDecalbutton *
gkrellm_put_label_in_meter_button(GkrellmPanel *p, void (*func)(), void *data,
				gint pad)
	{
	GkrellmDecalbutton	*b;

	b = put_label_in_button(p, func, data, METER_PANEL_TYPE, pad);
	return b;
	}

GkrellmDecalbutton *
gkrellm_make_scaled_button(GkrellmPanel *p, GkrellmPiximage *im,
			void (*func)(), void *data,
			gboolean auto_hide, gboolean set_default_border,
			gint depth, gint cur_index, gint pressed_index,
			gint x, gint y, gint w, gint h)
	{
	GtkWidget			*top_win;
	GkrellmDecalbutton	*b;
	GkrellmDecal		*d;
	GkrellmBorder		*bdr;
	GdkPixmap			*pixmap;
	GdkBitmap			*mask;

	if (!p)
		return NULL;
	if (!im)
		{
		im = _GK.decal_button_piximage;
		depth = 2;
		cur_index = 0;
		pressed_index = 1;
		}
	if (depth < 2)
		depth = 2;
	if (w < 0)
		w = gkrellm_chart_width();
	else
		{
		if (w == 0)
			w = gdk_pixbuf_get_width(im->pixbuf);
		if ((w = w * _GK.theme_scale / 100) < 2)
			w = 2;
		}

	if (h < 0)
		h = p->h;
	else
		{
		if (h == 0)
			h = gdk_pixbuf_get_height(im->pixbuf) / depth;
		if ((h = h * _GK.theme_scale / 100) < 2)
			h = 2;
		}

	top_win = gkrellm_get_top_window();
	pixmap = gdk_pixmap_new(top_win->window, w, depth * h, -1);
	mask = gdk_pixmap_new(top_win->window, w, depth * h, 1);
	if (set_default_border)
		{
		bdr = &im->border;
		bdr->left = bdr->right = bdr->top = bdr->bottom = 1;
		}
	gkrellm_scale_piximage_to_pixmap(im, &pixmap, &mask, w, depth * h);
	d = gkrellm_create_decal_pixmap(p, pixmap, mask, depth, NULL, x, y);
	d->flags |= DF_LOCAL_PIXMAPS;
	b = gkrellm_make_decal_button(p, d, func, data, cur_index, pressed_index);
	if (auto_hide)
		{
		d->state = DS_INVISIBLE;
		b->type = AUTO_HIDE_BUTTON;
		}
	return b;
	}


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

	if (!im)
		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;

	if (depth < 1)
		depth = 1;

	if (   w < 1
		&& (w = gdk_pixbuf_get_width(im->pixbuf) * _GK.theme_scale / 100) < 1
	   )
		w = 1;
	d->w = w;

	if (h < 1)
		h = gdk_pixbuf_get_height(im->pixbuf) / depth * _GK.theme_scale / 100;

	if (h < 1)
		h = 1;
	d->h = h;

	pixmap = gdk_pixmap_new(top_win->window, d->w, d->h * depth, -1);
	mask = gdk_pixmap_new(top_win->window, d->w, d->h * depth, 1);
	gkrellm_scale_piximage_to_pixmap(im, &pixmap, &mask, d->w, d->h * depth);

	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 = DF_LOCAL_PIXMAPS;
	d->state = DS_VISIBLE;
	return d;
	}