main.c

系统任务管理器

/* GKrellM
|  Copyright (C) 1999-2006 Bill Wilson
|
|  Author:  Bill Wilson    [e-mail]
|  Latest versions might be found at:  http://gkrellm.net
|
|  This program is free software which I release under the GNU General Public
|  License. You may redistribute and/or modify this program under the terms
|  of that 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.  Version 2 is in the
|  COPYRIGHT file in the top level directory of this distribution.
| 
|  To get a copy of the GNU General Puplic License, write to the Free Software
|  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "gkrellm.h"
#include "gkrellm-private.h"
#include "gkrellm-sysdeps.h"

#if GTK_CHECK_VERSION(2,4,0)
#include "icon.xpm"
#endif

#include <signal.h>


struct GkrellmConfig	_GK;
GkrellmTicks			GK;

struct
	{
	GtkWidget	*window;		/* Top level window	*/
	GtkWidget	*vbox;

	GtkWidget	*top0_event_box;	/* Top frame event box */
	GtkWidget	*top0_vbox;			/* Top frame			*/

	GtkWidget	*middle_hbox;
	  GtkWidget	*left_event_box;	/* Holds left vbox.		*/
	  GtkWidget	*left_vbox;			/* Holds left frame.	*/

	  GtkWidget	*middle_vbox;		/* A handle for sliding shut */
	  GtkWidget	*monitor_vbox;		/* All monitors go in here.	*/
		GtkWidget	*top1_event_box;	/* First event box */
		GtkWidget	*top1_vbox;			/* hostname	*/

	  GtkWidget	*right_event_box;	/* Holds right vbox.	*/
	  GtkWidget	*right_vbox;		/* Holds right frame.	*/

	GtkWidget	*bottom_vbox;	/* Bottom frame	*/

	GdkPixmap	*frame_left_pixmap;
	GdkBitmap	*frame_left_mask;
	GdkPixmap	*frame_right_pixmap;
	GdkBitmap	*frame_right_mask;

	GdkPixmap	*frame_top_pixmap;
	GdkBitmap	*frame_top_mask;
	GdkPixmap	*frame_bottom_pixmap;
	GdkBitmap	*frame_bottom_mask;

	GdkPixmap	*window_transparency_mask;
	}
	gtree;


static GtkWidget *top_window;
GList			*gkrellm_monitor_list;
time_t			gkrellm_time_now;

static GtkItemFactory	*item_factory;

static gchar	*geometry;

static gint		y_pack;

static gint		monitor_previous_height;
static gint		monitors_visible	= TRUE;
static gint		mask_monitors_visible = TRUE;
static gint		check_rootpixmap_transparency;

static gboolean	no_transparency,
				do_intro,
				decorated,
				configure_position_lock;

static void		apply_frame_transparency(gboolean force);


#define	N_FALLBACK_FONTS	3

static gchar	*fail_large_font[N_FALLBACK_FONTS] =
{
"Serif 10",
"Ariel 10",
"fixed"
};

static gchar	*fail_normal_font[N_FALLBACK_FONTS] =
{
"Serif 9",
"Ariel 9",
"fixed"
};

static gchar	*fail_small_font[N_FALLBACK_FONTS] =
{
"Serif 8",
"Ariel 8",
"fixed"
};


static gchar	*intro_msg =
N_(	"You can configure your monitors by right clicking on\n"
	"the top frame of GKrellM or by hitting the F1 key\n"
	"with the mouse in the GKrellM window.\n\n"
	"Read the Info pages in the config for setup help.");


static void
load_font(gchar *font_string, PangoFontDescription **gk_font,
				gchar **fallback_fonts)
	{
	PangoFontDescription	*font_desc = NULL;
	gint		i;

	if (font_string)
		font_desc = pango_font_description_from_string(font_string);
	if (_GK.debug_level & DEBUG_GUI)
		printf("load_font: %s %p\n", font_string, font_desc);

	if (!font_desc)
		{
		for (i = 0; !font_desc && i < N_FALLBACK_FONTS; ++i)
			{
			font_desc = pango_font_description_from_string(fallback_fonts[i]);
			if (_GK.debug_level & DEBUG_GUI)
				printf("load_font trying fallback: %s\n",
							fallback_fonts[i]);
			}
		}
	if (*gk_font)
		pango_font_description_free(*gk_font);
	*gk_font = font_desc;
	}

static void
setup_fonts()
	{
	load_font(_GK.large_font_string, &_GK.large_font, fail_large_font);
	load_font(_GK.normal_font_string, &_GK.normal_font, fail_normal_font);
	load_font(_GK.small_font_string, &_GK.small_font, fail_small_font);
	if (!_GK.large_font || !_GK.normal_font || !_GK.small_font)
		{
		g_print(_("Error: Could not load all fonts.\n"));
		exit(0);
		}
	_GK.font_load_count += 1;
	}

void
gkrellm_map_color_string(gchar *color_string, GdkColor *color)
	{
	static GdkColormap	*colormap;

	if (colormap == NULL)
		colormap = gtk_widget_get_colormap(top_window);
	if (color->red || color->green || color->blue)
		gdk_colormap_free_colors(colormap, color, 1);
	if (!color_string)
		color_string = "black";
	gdk_color_parse(color_string, color);
	gdk_colormap_alloc_color(colormap, color, FALSE, TRUE);
	}

static void
setup_colors()
	{
	GtkWidget	*win	= top_window;

	gkrellm_map_color_string(_GK.chart_in_color, &_GK.in_color);
	gkrellm_map_color_string(_GK.chart_in_color_grid, &_GK.in_color_grid);

	gkrellm_map_color_string(_GK.chart_out_color, &_GK.out_color);
	gkrellm_map_color_string(_GK.chart_out_color_grid, &_GK.out_color_grid);

	gkrellm_map_color_string("#000000", &_GK.background_color);
	gkrellm_map_color_string("#FFFFFF", &_GK.white_color);

	if (_GK.draw1_GC == NULL)
		{
		_GK.draw1_GC = gdk_gc_new( win->window );
		gdk_gc_copy( _GK.draw1_GC, win->style->white_gc );
		}
	if (_GK.draw2_GC == NULL)
		{
		_GK.draw2_GC = gdk_gc_new( win->window );
		gdk_gc_copy( _GK.draw2_GC, win->style->white_gc );
		}
	if (_GK.draw3_GC == NULL)
		{
		_GK.draw3_GC = gdk_gc_new( win->window );
		gdk_gc_copy( _GK.draw3_GC, win->style->white_gc );
		}
	if (_GK.draw_stencil_GC == NULL)
		{
		_GK.draw_stencil_GC = gdk_gc_new( win->window );
		gdk_gc_copy(_GK.draw_stencil_GC, win->style->white_gc );
		}
	if (_GK.text_GC == NULL)
		{
		_GK.text_GC = gdk_gc_new( win->window );
		gdk_gc_copy( _GK.text_GC, win->style->white_gc );
		}

	/* Set up the depth 1 GCs
	*/
	/* printf("white pixel = %ld\n", _GK.white_color.pixel); */
	if (_GK.bit1_GC == NULL)
		{
		GdkBitmap	*dummy_bitmap;
		GdkColor	bit_color;

		dummy_bitmap = gdk_pixmap_new(top_window->window, 16, 16, 1);
		_GK.bit1_GC = gdk_gc_new(dummy_bitmap);
		_GK.bit0_GC = gdk_gc_new(dummy_bitmap);
		bit_color.pixel = 1;
		gdk_gc_set_foreground(_GK.bit1_GC, &bit_color);
		bit_color.pixel = 0;
		gdk_gc_set_foreground(_GK.bit0_GC, &bit_color);
		g_object_unref(G_OBJECT(dummy_bitmap));
		}
	}


static gint	save_position_countdown;

static void
set_or_save_position(gint save)
	{
	FILE		*f;
	gchar		*path;
	gint		x, y;
	static gint	x_last = -1,
				y_last = -1;

	path = gkrellm_make_data_file_name(NULL, "startup_position");
	if (save)
		{
		if (!configure_position_lock && y_pack < 0)
			{	/* Most recent configure event may have happened before
				|  gkrellm has removed it's lock, so get gdk's cached values.
				|  Eg. gkrellm is moved < 2 sec after startup by the window
				|  manager.  See cb_configure_notify().
				|  But don't update _GK.y_position if current gkrellm position
				|  reflects a packed move (ie, not a user set position).
				*/
			gdk_window_get_position(top_window->window,
					&_GK.x_position, &_GK.y_position);
			}
		if (   (_GK.x_position != x_last || _GK.y_position != y_last)
			&& (f = fopen(path, "w")) != NULL
		   )
			{
			x_last = _GK.x_position;
			y_last = _GK.y_position;
			fprintf(f, "%d %d\n", _GK.x_position, _GK.y_position);
			fclose(f);
			if (_GK.debug_level & DEBUG_POSITION)
				printf("save_position: %d %d\n", x_last, y_last);
			}
		save_position_countdown = 0;
		}
	else if (!_GK.withdrawn)  /* In slit conflicts with setting position */
		{
		if ((f = fopen(path, "r")) != NULL)
			{
			x = y = 0;
			fscanf(f, "%d %d", &x, &y);
			fclose(f);

			if (   x >= 0 && x < _GK.w_display - 10
				&& y >= 0 && y < _GK.h_display - 25
			   )
				{
				_GK.x_position = x_last = x;
				_GK.y_position = y_last = y;
				_GK.position_valid = TRUE;
				gdk_window_move(gtree.window->window, x, y);
				if (_GK.debug_level & DEBUG_POSITION)
					printf("startup_position moveto %d %d (valid)\n", x, y);
				}
			}
		}
	g_free(path);
	}


static gint
update_monitors()
	{
	GList			*list;
	GkrellmMonitor			*mon;
	struct tm		*pCur, *pPrev;
	static time_t	time_prev;

	time(&_GK.time_now);
	GK.second_tick = (_GK.time_now == time_prev) ? FALSE : TRUE;
	time_prev = _GK.time_now;

	if (GK.second_tick)
		{
		pPrev = &gkrellm_current_tm;
		pCur = localtime(&_GK.time_now);
		GK.two_second_tick  = ((pCur->tm_sec % 2) == 0) ? TRUE : FALSE;
		GK.five_second_tick = ((pCur->tm_sec % 5) == 0) ? TRUE : FALSE;
		GK.ten_second_tick  = ((pCur->tm_sec % 10) == 0) ? TRUE : FALSE;
		GK.minute_tick = (pCur->tm_min  != pPrev->tm_min)  ? TRUE : FALSE;
		GK.hour_tick   = (pCur->tm_hour != pPrev->tm_hour) ? TRUE : FALSE;
		GK.day_tick    = (pCur->tm_mday != pPrev->tm_mday) ? TRUE : FALSE;

		/* Copy localtime() data to my global struct tm data so clock (or
		|  anybody) has access to current struct tm data.  Must copy so
		|  data is not munged by plugins which might call localtime().
		*/
		gkrellm_current_tm = *pCur;
		}
	else
		{
		GK.two_second_tick = FALSE;
		GK.five_second_tick = FALSE;
		GK.ten_second_tick = FALSE;
		GK.minute_tick = FALSE;
		GK.hour_tick = FALSE;
		GK.day_tick = FALSE;
		}

	gkrellm_alert_update();
	for (list = gkrellm_monitor_list; list; list = list->next)
		{
		mon = (GkrellmMonitor *) list->data;
		gkrellm_record_state(UPDATE_MONITOR, mon);
		if (mon->update_monitor && mon->privat->enabled)
			(*(mon->update_monitor))();
		}
	gkrellm_record_state(INTERNAL, NULL);
	++GK.timer_ticks;

	if (save_position_countdown > 0 && --save_position_countdown == 0)
		set_or_save_position(1);
	if (configure_position_lock && (GK.timer_ticks / _GK.update_HZ) > 1)
		configure_position_lock = FALSE;


	/* Update if background has changed */
	if (   GK.second_tick && !no_transparency
		&& gkrellm_winop_updated_background()
		&& check_rootpixmap_transparency == 0
	   )
		check_rootpixmap_transparency = 1;

	if (_GK.need_frame_packing)
		{
		gkrellm_pack_side_frames();
		apply_frame_transparency(TRUE);
		if (!no_transparency)
			gkrellm_winop_apply_rootpixmap_transparency();
		check_rootpixmap_transparency = 0;
		}

	if (check_rootpixmap_transparency > 0)
		if (--check_rootpixmap_transparency == 0 && !no_transparency)
			gkrellm_winop_apply_rootpixmap_transparency();

	if (   GK.minute_tick && _GK.config_modified
		&& !gkrellm_config_window_shown()
	   )
		gkrellm_save_user_config();

	return TRUE;			/* restarts timeout */
	}

void
gkrellm_start_timer(gint Hz)
	{
	static gint	timeout_id	= 0;
	gint		interval;

	if (timeout_id)
		gtk_timeout_remove(timeout_id);
	timeout_id = 0;
	if (Hz > 0)
		{
		interval = 1000 / Hz;
		interval = interval * 60 / 63;	/* Compensate for overhead XXX */
		timeout_id = gtk_timeout_add(interval,
						(GtkFunction) update_monitors,NULL);
		}
	}

GtkWidget *
gkrellm_get_top_window()
	{
	return top_window;
	}

GkrellmTicks *
gkrellm_ticks(void)
	{
	return &GK;
	}

gint
gkrellm_get_timer_ticks(void)
	{
	return GK.timer_ticks;
	}


  /* Nice set of effects I have here...  Either shadow effect or none.
  |  Returning 1 means shadow effect and the return value is also used by
  |  callers to increment height fields to allow for the offset shadow draw.
  */
gint
gkrellm_effect_string_value(gchar *effect_string)
	{
	if (effect_string)
		return (strcmp(effect_string, "shadow") == 0) ? 1 : 0;
	return 0;
	}

  /* Before 1.0.3 text, decals, krells used top/bottom borders for placement.
  |  This is to allow themes to transition to using top/bottom_margin.
  */
void
gkrellm_get_top_bottom_margins(GkrellmStyle *style, gint *top, gint *bottom)
	{
	gint	t = 0,
			b = 0;

	if (style)
		{
		if (   _GK.use_top_bottom_margins		/* XXX */
			|| g_list_find(_GK.chart_style_list, style)