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app: add a boolean "clockwise" property to the new GimpDial widget

This commit is contained in:
Michael Natterer 2014-05-25 15:45:55 +02:00
parent 7286bbda52
commit 710281ed54
2 changed files with 28 additions and 23 deletions
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43
app/widgets/gimpdial.c
View File

@ -44,7 +44,8 @@ enum
{
PROP_0,
PROP_ALPHA,
PROP_BETA
PROP_BETA,
PROP_CLOCKWISE
};
enum
@ -87,7 +88,7 @@ static void gimp_dial_draw_arrows (cairo_t *cr,
gint size,
gdouble alpha,
gdouble beta,
DialDirection direction);
gboolean clockwise);
G_DEFINE_TYPE (GimpDial, gimp_dial, GTK_TYPE_WIDGET)
@ -131,6 +132,13 @@ gimp_dial_class_init (GimpDialClass *klass)
0.0, 2 * G_PI, G_PI,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_CLOCKWISE,
g_param_spec_boolean ("clockwise",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
}
static void
@ -143,7 +151,6 @@ gimp_dial_init (GimpDial *dial)
GDK_BUTTON1_MOTION_MASK);
dial->border_width = 4;
dial->direction = DIAL_DIRECTION_CW;
}
static void
@ -172,6 +179,11 @@ gimp_dial_set_property (GObject *object,
gtk_widget_queue_draw (GTK_WIDGET (dial));
break;
case PROP_CLOCKWISE:
dial->clockwise = g_value_get_boolean (value);
gtk_widget_queue_draw (GTK_WIDGET (dial));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
@ -196,6 +208,10 @@ gimp_dial_get_property (GObject *object,
g_value_set_double (value, dial->beta);
break;
case PROP_CLOCKWISE:
g_value_set_boolean (value, dial->clockwise);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
@ -327,7 +343,7 @@ gimp_dial_expose_event (GtkWidget *widget,
allocation.y + dial->border_width + y);
gimp_dial_draw_background (cr, size);
gimp_dial_draw_arrows (cr, size, dial->alpha, dial->beta, dial->direction);
gimp_dial_draw_arrows (cr, size, dial->alpha, dial->beta, dial->clockwise);
cairo_destroy (cr);
}
@ -565,20 +581,15 @@ gimp_dial_draw_background (cairo_t *cr,
}
static void
gimp_dial_draw_arrows (cairo_t *cr,
gint size,
gdouble alpha,
gdouble beta,
DialDirection direction)
gimp_dial_draw_arrows (cairo_t *cr,
gint size,
gdouble alpha,
gdouble beta,
gboolean clockwise)
{
gint radius = size / 2.0;
gint dist;
gdouble delta;
delta = angle_mod_2PI (beta - alpha);
if (direction == DIAL_DIRECTION_CCW)
delta = delta - 2 * G_PI;
gint direction = clockwise ? -1 : 1;
cairo_move_to (cr, radius, radius);
cairo_line_to (cr,
@ -633,7 +644,7 @@ gimp_dial_draw_arrows (cairo_t *cr,
cairo_new_sub_path (cr);
if (direction == DIAL_DIRECTION_CW)
if (! clockwise)
{
cairo_arc_negative (cr,
radius,

8
app/widgets/gimpdial.h
View File

@ -22,12 +22,6 @@
#define __GIMP_DIAL_H__
typedef enum
{
DIAL_DIRECTION_CW = 1,
DIAL_DIRECTION_CCW = -1
} DialDirection;
typedef enum
{
DIAL_TARGET_ALPHA,
@ -52,7 +46,7 @@ struct _GimpDial
gdouble alpha;
gdouble beta;
DialDirection direction;
gboolean clockwise;
GdkWindow *event_window;