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/* $Id$ */
/*
* Copyright (c) 2007 Nick Schermer <nick@xfce.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public 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.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_MATH_H
#include <math.h>
#endif
#include <gtk/gtk.h>
#include <cairo/cairo.h>
#include "clock.h"
#include "clock-lcd.h"
#define RELATIVE_SPACE (0.10)
#define RELATIVE_DIGIT (0.50)
#define RELATIVE_DOTS (3 * RELATIVE_SPACE)
/* prototypes */
static void xfce_clock_lcd_finalize (GObject *object);
static void xfce_clock_lcd_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void xfce_clock_lcd_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void xfce_clock_lcd_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static gboolean xfce_clock_lcd_expose_event (GtkWidget *widget,
GdkEventExpose *event);
static gdouble xfce_clock_lcd_get_ratio (XfceClockLcd *lcd);
static gdouble xfce_clock_lcd_draw_dots (cairo_t *cr,
gdouble size,
gdouble offset_x,
gdouble offset_y);
static gdouble xfce_clock_lcd_draw_digit (cairo_t *cr,
guint number,
gdouble size,
gdouble offset_x,
gdouble offset_y);
enum
{
PROP_0,
PROP_SHOW_SECONDS,
PROP_SHOW_MILITARY,
PROP_SHOW_MERIDIEM,
PROP_FLASH_SEPARATORS,
};
struct _XfceClockLcdClass
{
GtkImageClass __parent__;
};
struct _XfceClockLcd
{
GtkImage __parent__;
/* whether we show seconds */
guint show_seconds : 1;
/* whether it's a 24h clock */
guint show_military : 1;
/* whether we display am/pm */
guint show_meridiem : 1;
/* whether to flash the separators */
guint flash_separators : 1;
};
G_DEFINE_TYPE (XfceClockLcd, xfce_clock_lcd, GTK_TYPE_IMAGE);
static void
xfce_clock_lcd_class_init (XfceClockLcdClass *klass)
{
GObjectClass *gobject_class;
GtkWidgetClass *gtkwidget_class;
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = xfce_clock_lcd_finalize;
gobject_class->set_property = xfce_clock_lcd_set_property;
gobject_class->get_property = xfce_clock_lcd_get_property;
gtkwidget_class = GTK_WIDGET_CLASS (klass);
gtkwidget_class->size_request = xfce_clock_lcd_size_request;
gtkwidget_class->expose_event = xfce_clock_lcd_expose_event;
/**
* Whether we display seconds
**/
g_object_class_install_property (gobject_class,
PROP_SHOW_SECONDS,
g_param_spec_boolean ("show-seconds", "show-seconds", "show-seconds",
FALSE,
PANEL_PARAM_READWRITE));
/**
* Whether we show a 24h clock
**/
g_object_class_install_property (gobject_class,
PROP_SHOW_MILITARY,
g_param_spec_boolean ("show-military", "show-military", "show-military",
FALSE,
PANEL_PARAM_READWRITE));
/**
* Whether we show am or pm
**/
g_object_class_install_property (gobject_class,
PROP_SHOW_MERIDIEM,
g_param_spec_boolean ("show-meridiem", "show-meridiem", "show-meridiem",
TRUE,
PANEL_PARAM_READWRITE));
/**
* Whether to flash the time separators
**/
g_object_class_install_property (gobject_class,
PROP_FLASH_SEPARATORS,
g_param_spec_boolean ("flash-separators", "flash-separators", "flash-separators",
FALSE,
PANEL_PARAM_READWRITE));
}
static void
xfce_clock_lcd_init (XfceClockLcd *lcd)
{
/* init */
lcd->show_seconds = FALSE;
lcd->show_meridiem = FALSE;
lcd->show_military = TRUE;
lcd->flash_separators = FALSE;
}
static void
xfce_clock_lcd_finalize (GObject *object)
{
(*G_OBJECT_CLASS (xfce_clock_lcd_parent_class)->finalize) (object);
}
static void
xfce_clock_lcd_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
XfceClockLcd *lcd = XFCE_CLOCK_LCD (object);
switch (prop_id)
{
case PROP_SHOW_SECONDS:
lcd->show_seconds = g_value_get_boolean (value);
break;
case PROP_SHOW_MILITARY:
lcd->show_military = g_value_get_boolean (value);
break;
case PROP_SHOW_MERIDIEM:
lcd->show_meridiem = g_value_get_boolean (value);
break;
case PROP_FLASH_SEPARATORS:
lcd->flash_separators = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
xfce_clock_lcd_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
XfceClockLcd *lcd = XFCE_CLOCK_LCD (object);
switch (prop_id)
{
case PROP_SHOW_SECONDS:
g_value_set_boolean (value, lcd->show_seconds);
break;
case PROP_SHOW_MILITARY:
g_value_set_boolean (value, lcd->show_military);
break;
case PROP_SHOW_MERIDIEM:
g_value_set_boolean (value, lcd->show_meridiem);
break;
case PROP_FLASH_SEPARATORS:
g_value_set_boolean (value, lcd->flash_separators);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
xfce_clock_lcd_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
gint width, height;
gdouble ratio;
/* get the current widget size */
gtk_widget_get_size_request (widget, &width, &height);
/* get the width:height ratio */
ratio = xfce_clock_lcd_get_ratio (XFCE_CLOCK_LCD (widget));
if (width == -1)
{
requisition->height = MAX (10, height - height % 10);
requisition->width = requisition->height * ratio;
}
else
{
/* calc height */
height = width / ratio;
height = MAX (10, height - height % 10);
requisition->height = height;
requisition->width = height * ratio;
}
}
static gboolean
xfce_clock_lcd_expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
XfceClockLcd *lcd = XFCE_CLOCK_LCD (widget);
cairo_t *cr;
gdouble offset_x, offset_y;
gint ticks, i;
gdouble size;
gdouble ratio;
struct tm tm;
g_return_val_if_fail (XFCE_CLOCK_IS_LCD (lcd), FALSE);
/* get the width:height ratio */
ratio = xfce_clock_lcd_get_ratio (lcd);
/* size of a digit should be a fraction of 10 */
size = widget->allocation.height - widget->allocation.height % 10;
/* make sure we also fit on small vertical panels */
size = MIN (rint ((gdouble) widget->allocation.width / ratio), size);
/* begin offsets */
offset_x = rint ((widget->allocation.width - (size * ratio)) / 2.00);
offset_y = rint ((widget->allocation.height - size) / 2.00);
/* only allow positive values from the base point */
offset_x = widget->allocation.x + MAX (0.00, offset_x);
offset_y = widget->allocation.y + MAX (0.00, offset_y);
/* get the cairo context */
cr = gdk_cairo_create (widget->window);
if (G_LIKELY (cr != NULL))
{
/* clip the drawing area */
gdk_cairo_rectangle (cr, &event->area);
cairo_clip (cr);
/* set the source color */
gdk_cairo_set_source_color (cr, &widget->style->fg[GTK_STATE_NORMAL]);
/* get the local time */
xfce_clock_util_get_localtime (&tm);
/* draw the hours */
ticks = tm.tm_hour;
/* convert 24h clock to 12h clock */
if (!lcd->show_military && ticks > 12)
ticks -= 12;
/* queue a resize when the number of hour digits changed */
if (G_UNLIKELY ((ticks == 10 || ticks == 0) && tm.tm_min == 0 && tm.tm_sec == 0))
gtk_widget_queue_resize (widget);
if (ticks >= 10)
{
/* draw the number and increase the offset */
offset_x = xfce_clock_lcd_draw_digit (cr, ticks >= 20 ? 2 : 1, size, offset_x, offset_y);
}
/* draw the other number of the hour and increase the offset */
offset_x = xfce_clock_lcd_draw_digit (cr, ticks % 10, size, offset_x, offset_y);
for (i = 0; i < 2; i++)
{
/* get the time */
if (i == 0)
{
/* get the minutes */
ticks = tm.tm_min;
}
else
{
/* leave when we don't want seconds */
if (!lcd->show_seconds)
break;
/* get the seconds */
ticks = tm.tm_sec;
}
/* draw the dots */
if (lcd->flash_separators && (tm.tm_sec % 2) == 1)
offset_x += size * RELATIVE_SPACE * 2;
else
offset_x = xfce_clock_lcd_draw_dots (cr, size, offset_x, offset_y);
/* draw the first digit */
offset_x = xfce_clock_lcd_draw_digit (cr, (ticks - (ticks % 10)) / 10, size, offset_x, offset_y);
/* draw the second digit */
offset_x = xfce_clock_lcd_draw_digit (cr, ticks % 10, size, offset_x, offset_y);
}
if (lcd->show_meridiem)
{
/* am or pm? */
ticks = tm.tm_hour >= 12 ? 11 : 10;
/* draw the digit */
offset_x = xfce_clock_lcd_draw_digit (cr, ticks, size, offset_x, offset_y);
}
/* cleanup */
cairo_destroy (cr);
}
return FALSE;
}
static gdouble
xfce_clock_lcd_get_ratio (XfceClockLcd *lcd)
{
gdouble ratio;
gint ticks;
struct tm tm;
/* get the local time */
xfce_clock_util_get_localtime (&tm);
/* 8:88 */
ratio = (3 * RELATIVE_DIGIT) + RELATIVE_DOTS + RELATIVE_SPACE;
ticks = tm.tm_hour;
if (!lcd->show_military && ticks > 12)
ticks -= 12;
if (ticks >= 10)
ratio += RELATIVE_DIGIT + RELATIVE_SPACE;
if (lcd->show_seconds)
ratio += (2 * RELATIVE_DIGIT) + RELATIVE_SPACE + RELATIVE_DOTS;
if (lcd->show_meridiem)
ratio += RELATIVE_DIGIT + RELATIVE_SPACE;
return ratio;
}
static gdouble
xfce_clock_lcd_draw_dots (cairo_t *cr,
gdouble size,
gdouble offset_x,
gdouble offset_y)
{
gint i;
if (size >= 10)
{
/* draw the dots (with rounding) */
for (i = 1; i < 3; i++)
cairo_rectangle (cr, rint (offset_x), rint (offset_y + size * RELATIVE_DOTS * i),
rint (size * RELATIVE_SPACE), rint (size * RELATIVE_SPACE));
}
else
{
/* draw the dots */
for (i = 1; i < 3; i++)
cairo_rectangle (cr, offset_x, offset_y + size * RELATIVE_DOTS * i,
size * RELATIVE_SPACE, size * RELATIVE_SPACE);
}
/* fill the dots */
cairo_fill (cr);
return (offset_x + size * RELATIVE_SPACE * 2);
}
static gdouble
xfce_clock_lcd_draw_digit (cairo_t *cr,
guint number,
gdouble size,
gdouble offset_x,
gdouble offset_y)
{
gint i, j;
gint segment;
gdouble x, y;
gdouble rel_x, rel_y;
/* ##1##
* 6 2
* ##7##
* 5 3
* ##4##
*/
/* coordicates to draw for each segment */
gdouble segments_x[][6] = { { 0.02, 0.48, 0.38, 0.12, -1.0, 0.00 }, /* 1x */
{ 0.40, 0.505, 0.505, 0.40, -1.0, 0.00 }, /* 2x */
{ 0.40, 0.505, 0.505, 0.40, -1.0, 0.00 }, /* 3x */
{ 0.12, 0.38, 0.48, 0.02, -1.0, 0.00 }, /* 4x */
{ 0.00, 0.105, 0.105, 0.00, -1.0, 0.00 }, /* 5x */
{ 0.00, 0.105, 0.105, 0.00, -1.0, 0.00 }, /* 6x */
{ 0.00, 0.10, 0.40, 0.50, 0.40, 0.10 } }; /* 7x */
gdouble segments_y[][6] = { { 0.00, 0.00, 0.105, 0.105, -1.0, 0.00 }, /* 1y */
{ 0.12, 0.02, 0.48, 0.43, -1.0, 0.00 }, /* 2y */
{ 0.57, 0.52, 0.98, 0.88, -1.0, 0.00 }, /* 3y */
{ 0.90, 0.90, 1.00, 1.00, -1.0, 0.00 }, /* 4y */
{ 0.52, 0.57, 0.88, 0.98, -1.0, 0.00 }, /* 5y */
{ 0.02, 0.12, 0.43, 0.48, -1.0, 0.00 }, /* 6y */
{ 0.50, 0.445, 0.445, 0.50, 0.55, 0.55 } }; /* 7y */
/* segment to draw for each number: 0, 1, ..., 9, A, P */
gint numbers[][8] = { { 0, 1, 2, 3, 4, 5, -1 },
{ 1, 2, -1 },
{ 0, 1, 6, 4, 3, -1 },
{ 0, 1, 6, 2, 3, -1 },
{ 5, 6, 1, 2, -1 },
{ 0, 5, 6, 2, 3, -1 },
{ 0, 5, 4, 3, 2, 6, -1 },
{ 0, 1, 2, -1 },
{ 0, 1, 2, 3, 4, 5, 6, -1 },
{ 3, 2, 1, 0, 5, 6, -1 },
{ 4, 5, 0, 1, 2, 6, -1 },
{ 4, 5, 0, 1, 6, -1 } };
g_return_val_if_fail ((gint) number >= 0 || number <= 11, offset_x);
for (i = 0; i < 9; i++)
{
/* get the segment we're going to draw */
segment = numbers[number][i];
/* leave when there are no more segments left */
if (segment == -1)
break;
/* walk through the coordinate points */
for (j = 0; j < 6; j++)
{
/* get the relative sizes */
rel_x = segments_x[segment][j];
rel_y = segments_y[segment][j];
/* leave when there are no valid coordinates */
if (rel_x == -1.00 || rel_y == -1.00)
break;
/* get x and y coordinates for this point */
x = rel_x * size + offset_x;
y = rel_y * size + offset_y;
/* when 0.01 * size is larger then 1, round the numbers */
if (size >= 10)
{
x = rint (x);
y = rint (y);
}
if (G_UNLIKELY (j == 0))
cairo_move_to (cr, x, y);
else
cairo_line_to (cr, x, y);
}
/* close the line */
cairo_close_path (cr);
}
/* fill the segments */
cairo_fill (cr);
return (offset_x + size * (RELATIVE_DIGIT + RELATIVE_SPACE));
}
GtkWidget *
xfce_clock_lcd_new (void)
{
return g_object_new (XFCE_CLOCK_TYPE_LCD, NULL);
}
gboolean
xfce_clock_lcd_update (gpointer user_data)
{
GtkWidget *widget = GTK_WIDGET (user_data);
/* update if the widget if visible */
if (G_LIKELY (GTK_WIDGET_VISIBLE (widget)))
gtk_widget_queue_draw (widget);
return TRUE;
}