Commit 0c477564 authored by Ell's avatar Ell

app: in GimpDial, add "clockwise-angles" property ...

... and rename "clockwise" to "clockwise-delta"

Add a boolean "clockwise-angles" property to GimpDial, which, when
set, causes the dial legs' angles to be measured clockwise, rather
than counter-clockwise.  The property is FALSE by default.

Rename the "clockwise" property, which controls the direction of
the measured delta between the two angles, to "clockwise-delta", to
avoid confusion, and adapt the rest of the code.
parent fdc3c84f
......@@ -47,15 +47,15 @@ invert_segment_clicked (GtkWidget *button,
gboolean clockwise;
g_object_get (dial,
"alpha", &alpha,
"beta", &beta,
"clockwise", &clockwise,
"alpha", &alpha,
"beta", &beta,
"clockwise-delta", &clockwise,
NULL);
g_object_set (dial,
"alpha", beta,
"beta", alpha,
"clockwise", ! clockwise,
"alpha", beta,
"beta", alpha,
"clockwise-delta", ! clockwise,
NULL);
}
......@@ -67,8 +67,8 @@ select_all_clicked (GtkWidget *button,
gboolean clockwise;
g_object_get (dial,
"alpha", &alpha,
"clockwise", &clockwise,
"alpha", &alpha,
"clockwise-delta", &clockwise,
NULL);
beta = alpha - (clockwise ? -1 : 1) * 0.00001;
......
......@@ -47,7 +47,8 @@ enum
PROP_DRAW_BETA,
PROP_ALPHA,
PROP_BETA,
PROP_CLOCKWISE
PROP_CLOCKWISE_ANGLES,
PROP_CLOCKWISE_DELTA
};
typedef enum
......@@ -63,7 +64,8 @@ struct _GimpDialPrivate
{
gdouble alpha;
gdouble beta;
gboolean clockwise;
gboolean clockwise_angles;
gboolean clockwise_delta;
gboolean draw_beta;
DialTarget target;
......@@ -96,7 +98,7 @@ static void gimp_dial_draw_arrows (cairo_t *cr,
gint size,
gdouble alpha,
gdouble beta,
gboolean clockwise,
gboolean clockwise_delta,
DialTarget highlight,
gboolean draw_beta);
......@@ -140,8 +142,15 @@ gimp_dial_class_init (GimpDialClass *klass)
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_CLOCKWISE,
g_param_spec_boolean ("clockwise",
g_object_class_install_property (object_class, PROP_CLOCKWISE_ANGLES,
g_param_spec_boolean ("clockwise-angles",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_CLOCKWISE_DELTA,
g_param_spec_boolean ("clockwise-delta",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE |
......@@ -185,8 +194,13 @@ gimp_dial_set_property (GObject *object,
gtk_widget_queue_draw (GTK_WIDGET (dial));
break;
case PROP_CLOCKWISE:
dial->priv->clockwise = g_value_get_boolean (value);
case PROP_CLOCKWISE_ANGLES:
dial->priv->clockwise_angles = g_value_get_boolean (value);
gtk_widget_queue_draw (GTK_WIDGET (dial));
break;
case PROP_CLOCKWISE_DELTA:
dial->priv->clockwise_delta = g_value_get_boolean (value);
gtk_widget_queue_draw (GTK_WIDGET (dial));
break;
......@@ -219,8 +233,12 @@ gimp_dial_get_property (GObject *object,
g_value_set_double (value, dial->priv->beta);
break;
case PROP_CLOCKWISE:
g_value_set_boolean (value, dial->priv->clockwise);
case PROP_CLOCKWISE_ANGLES:
g_value_set_boolean (value, dial->priv->clockwise_angles);
break;
case PROP_CLOCKWISE_DELTA:
g_value_set_boolean (value, dial->priv->clockwise_delta);
break;
case PROP_DRAW_BETA:
......@@ -237,9 +255,11 @@ static gboolean
gimp_dial_draw (GtkWidget *widget,
cairo_t *cr)
{
GimpDial *dial = GIMP_DIAL (widget);
GimpDial *dial = GIMP_DIAL (widget);
GtkAllocation allocation;
gint size;
gdouble alpha = dial->priv->alpha;
gdouble beta = dial->priv->beta;
GTK_WIDGET_CLASS (parent_class)->draw (widget, cr);
......@@ -249,6 +269,12 @@ gimp_dial_draw (GtkWidget *widget,
gtk_widget_get_allocation (widget, &allocation);
if (dial->priv->clockwise_angles)
{
alpha = -alpha;
beta = -beta;
}
cairo_save (cr);
cairo_translate (cr,
......@@ -256,8 +282,8 @@ gimp_dial_draw (GtkWidget *widget,
(allocation.height - size) / 2.0);
gimp_dial_draw_arrows (cr, size,
dial->priv->alpha, dial->priv->beta,
dial->priv->clockwise,
alpha, beta,
dial->priv->clockwise_delta,
dial->priv->target,
dial->priv->draw_beta);
......@@ -283,6 +309,10 @@ gimp_dial_button_press_event (GtkWidget *widget,
angle = _gimp_circle_get_angle_and_distance (GIMP_CIRCLE (dial),
bevent->x, bevent->y,
NULL);
if (dial->priv->clockwise_angles && angle)
angle = 2.0 * G_PI - angle;
dial->priv->last_angle = angle;
switch (dial->priv->target)
......@@ -315,6 +345,9 @@ gimp_dial_motion_notify_event (GtkWidget *widget,
mevent->x, mevent->y,
&distance);
if (dial->priv->clockwise_angles && angle)
angle = 2.0 * G_PI - angle;
if (_gimp_circle_has_grab (GIMP_CIRCLE (dial)))
{
gdouble delta;
......@@ -443,9 +476,9 @@ gimp_dial_draw_segment (cairo_t *cr,
gdouble radius,
gdouble alpha,
gdouble beta,
gboolean clockwise)
gboolean clockwise_delta)
{
gint direction = clockwise ? -1 : 1;
gint direction = clockwise_delta ? -1 : 1;
gint segment_dist;
gint tick;
gdouble slice;
......@@ -464,7 +497,7 @@ gimp_dial_draw_segment (cairo_t *cr,
cairo_new_sub_path (cr);
if (clockwise)
if (clockwise_delta)
slice = -gimp_dial_normalize_angle (alpha - beta);
else
slice = gimp_dial_normalize_angle (beta - alpha);
......@@ -478,7 +511,7 @@ gimp_dial_draw_arrows (cairo_t *cr,
gint size,
gdouble alpha,
gdouble beta,
gboolean clockwise,
gboolean clockwise_delta,
DialTarget highlight,
gboolean draw_beta)
{
......@@ -502,7 +535,7 @@ gimp_dial_draw_arrows (cairo_t *cr,
gimp_dial_draw_arrow (cr, radius, beta);
if ((highlight & DIAL_TARGET_BOTH) != DIAL_TARGET_BOTH)
gimp_dial_draw_segment (cr, radius, alpha, beta, clockwise);
gimp_dial_draw_segment (cr, radius, alpha, beta, clockwise_delta);
}
cairo_set_line_width (cr, 3.0);
......@@ -525,7 +558,7 @@ gimp_dial_draw_arrows (cairo_t *cr,
gimp_dial_draw_arrow (cr, radius, beta);
if ((highlight & DIAL_TARGET_BOTH) == DIAL_TARGET_BOTH)
gimp_dial_draw_segment (cr, radius, alpha, beta, clockwise);
gimp_dial_draw_segment (cr, radius, alpha, beta, clockwise_delta);
}
cairo_set_line_width (cr, 3.0);
......
......@@ -930,7 +930,7 @@ gimp_prop_angle_range_dial_new (GObject *config,
NULL, NULL);
g_object_bind_property (config, clockwise_property_name,
dial, "clockwise",
dial, "clockwise-delta",
G_BINDING_BIDIRECTIONAL |
G_BINDING_SYNC_CREATE);
......
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