gboolean
rcm_gray_motion_notify_event (GtkWidget *widget,
GdkEventMotion *event,
RcmGray *circle)
{
gint x, y;
GdkGCValues values;
values.function = GDK_INVERT;
xor_gc = gdk_gc_new_with_values (Current.From->preview->window,
&values,
GDK_GC_FUNCTION);
if (circle->action_flag == DRAG_START)
{
GtkStyle *style = gtk_widget_get_style (circle->preview);
gtk_widget_queue_draw (circle->preview);
color_rotate_draw_large_circle (circle->preview->window,
style->black_gc,
circle->gray_sat);
circle->action_flag = DRAGING;
}
else
{
color_rotate_draw_little_circle (widget->window, xor_gc,
circle->hue, circle->satur); /* erase */
}
x = event->x - GRAY_CENTER - LITTLE_RADIUS;
y = GRAY_CENTER - event->y + LITTLE_RADIUS;
circle->hue = angle_mod_2PI (arctg (y, x));
circle->satur = sqrt (SQR (x) + SQR (y)) / GRAY_RADIUS;
if (circle->satur > 1.0)
circle->satur = 1;
color_rotate_draw_little_circle (widget->window, xor_gc,
circle->hue, circle->satur);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->hue_entry),
circle->hue * rcm_units_factor(Current.Units));
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->satur_entry),
circle->satur);
if (Current.RealTime)
rcm_render_preview (Current.Bna->after);
gdk_event_request_motions (event);
return TRUE;
}
float
rcm_angle_inside_slice (float angle,
RcmAngle *slice)
{
return angle_mod_2PI (slice->cw_ccw * (slice->beta-angle)) /
angle_mod_2PI (slice->cw_ccw * (slice->beta-slice->alpha));
}
static gfloat
angle_inside_slice (gfloat hue,
gfloat from,
gfloat to,
gboolean cl)
{
gint cw_ccw = cl ? -1 : 1;
return angle_mod_2PI (cw_ccw * DEG_TO_RAD (to - hue)) /
angle_mod_2PI (cw_ccw * DEG_TO_RAD (from - to));
}
float
min_prox (float alpha,
float beta,
float angle)
{
gfloat temp1 = MIN (angle_mod_2PI (alpha - angle),
TP - angle_mod_2PI (alpha - angle));
gfloat temp2 = MIN (angle_mod_2PI (beta - angle),
TP - angle_mod_2PI (beta - angle));
return MIN(temp1, temp2);
}
gboolean
rcm_gray_motion_notify_event (GtkWidget *widget,
GdkEventMotion *event,
RcmGray *circle)
{
gint x, y;
gtk_widget_queue_draw (circle->preview);
x = event->x - GRAY_CENTER - LITTLE_RADIUS;
y = GRAY_CENTER - event->y + LITTLE_RADIUS;
circle->hue = angle_mod_2PI (arctg (y, x));
circle->satur = sqrt (SQR (x) + SQR (y)) / GRAY_RADIUS;
if (circle->satur > 1.0)
circle->satur = 1;
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->hue_entry),
circle->hue * rcm_units_factor(Current.Units));
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->satur_entry),
circle->satur);
if (Current.RealTime)
rcm_render_preview (Current.Bna->after);
gdk_event_request_motions (event);
return TRUE;
}
float*
closest (float *alpha,
float *beta,
float angle)
{
gfloat temp_alpha = MIN (angle_mod_2PI (*alpha-angle),
TP - angle_mod_2PI (*alpha-angle));
gfloat temp_beta = MIN (angle_mod_2PI (*beta -angle),
TP - angle_mod_2PI (*beta -angle));
if (temp_alpha-temp_beta < 0)
return alpha;
else
return beta;
}
gboolean
rcm_motion_notify_event (GtkWidget *widget,
GdkEventMotion *event,
RcmCircle *circle)
{
gfloat clicked_angle, delta;
clicked_angle = angle_mod_2PI (arctg (CENTER - event->y, event->x - CENTER));
delta = clicked_angle - circle->prev_clicked;
circle->prev_clicked = clicked_angle;
if (delta)
{
if (circle->mode == EACH)
{
*(circle->target) = clicked_angle;
}
else
{
circle->angle->alpha = angle_mod_2PI (circle->angle->alpha + delta);
circle->angle->beta = angle_mod_2PI (circle->angle->beta + delta);
}
gtk_widget_queue_draw (widget);
gdk_window_process_updates (gtk_widget_get_window (widget), FALSE);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->alpha_entry),
circle->angle->alpha *
rcm_units_factor(Current.Units));
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->beta_entry),
circle->angle->beta *
rcm_units_factor(Current.Units));
if (Current.RealTime)
rcm_render_preview (Current.Bna->after);
}
gdk_event_request_motions (event);
return TRUE;
}
gboolean
rcm_button_press_event (GtkWidget *widget,
GdkEventButton *event,
RcmCircle *circle)
{
float clicked_angle;
float *alpha;
float *beta;
alpha = &circle->angle->alpha;
beta = &circle->angle->beta;
circle->action_flag = DRAG_START;
clicked_angle = angle_mod_2PI (arctg (CENTER - event->y, event->x - CENTER));
circle->prev_clicked = clicked_angle;
if ((sqrt (SQR (event->y - CENTER) +
SQR (event->x - CENTER)) > RADIUS * EACH_OR_BOTH) &&
(min_prox (*alpha, *beta, clicked_angle) < G_PI / 12))
{
circle->mode = EACH;
circle->target = closest (alpha, beta, clicked_angle);
if (*(circle->target) != clicked_angle)
{
GtkStyle *style = gtk_widget_get_style (widget);
*(circle->target) = clicked_angle;
gtk_widget_queue_draw (circle->preview);
color_rotate_draw_arrows (widget->window,
style->black_gc,
circle->angle);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->alpha_entry),
circle->angle->alpha *
rcm_units_factor(Current.Units));
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->beta_entry),
circle->angle->beta *
rcm_units_factor(Current.Units));
if (Current.RealTime)
rcm_render_preview (Current.Bna->after);
}
}
else
circle->mode = BOTH;
return TRUE;
}
static void
color_rotate (GeglProperties *o,
gfloat *input,
gfloat *output)
{
gfloat h, s, v;
gboolean skip = FALSE;
rgb_to_hsv (input[0], input[1], input[2],
&h, &s, &v);
if (is_gray (s, o->threshold))
{
if (o->gray_mode == GEGL_COLOR_ROTATE_GRAY_TREAT_AS)
{
if (angle_inside_slice (o->hue, o->src_from, o->src_to,
o->src_clockwise) <= 1)
{
h = DEG_TO_RAD (o->hue) / TWO_PI;
s = o->saturation;
}
else
{
skip = TRUE;
}
}
else
{
skip = TRUE;
h = DEG_TO_RAD (o->hue) / TWO_PI;
s = o->saturation;
}
}
if (! skip)
{
h = linear (left_end (o->src_from, o->src_to, o->src_clockwise),
right_end (o->src_from, o->src_to, o->src_clockwise),
left_end (o->dest_from, o->dest_to, o->dest_clockwise),
right_end (o->dest_from, o->dest_to, o->dest_clockwise),
h * TWO_PI);
h = angle_mod_2PI (h) / TWO_PI;
}
hsv_to_rgb (h, s, v,
output, output + 1, output + 2);
}
gboolean
rcm_gray_button_press_event (GtkWidget *widget,
GdkEventButton *event,
RcmGray *circle)
{
GtkStyle *style = gtk_widget_get_style (widget);
int x, y;
x = event->x - GRAY_CENTER - LITTLE_RADIUS;
y = GRAY_CENTER - event->y + LITTLE_RADIUS;
circle->action_flag = DRAG_START;
circle->hue = angle_mod_2PI(arctg(y, x));
circle->satur = sqrt (SQR (x) + SQR (y)) / GRAY_RADIUS;
if (circle->satur > 1.0)
circle->satur = 1;
gtk_widget_queue_draw (circle->preview);
color_rotate_draw_little_circle (widget->window,
style->black_gc,
circle->hue, circle->satur);
color_rotate_draw_large_circle (circle->preview->window,
gtk_widget_get_style (circle->preview)->black_gc,
circle->gray_sat);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->hue_entry),
circle->hue * rcm_units_factor (Current.Units));
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->satur_entry),
circle->satur);
if (Current.RealTime)
rcm_render_preview (Current.Bna->after);
return TRUE;
}
gboolean
rcm_motion_notify_event (GtkWidget *widget,
GdkEventMotion *event,
RcmCircle *circle)
{
gfloat clicked_angle, delta;
gfloat *alpha, *beta;
gint cw_ccw;
GdkGCValues values;
alpha = &(circle->angle->alpha);
beta = &(circle->angle->beta);
cw_ccw = circle->angle->cw_ccw;
delta = angle_mod_2PI (cw_ccw * (*beta - *alpha));
values.function = GDK_INVERT;
xor_gc = gdk_gc_new_with_values (Current.From->preview->window,
&values,
GDK_GC_FUNCTION);
clicked_angle = angle_mod_2PI (arctg (CENTER - event->y, event->x - CENTER));
delta = clicked_angle - circle->prev_clicked;
circle->prev_clicked = clicked_angle;
if (delta)
{
if (circle->action_flag == DRAG_START)
{
gtk_widget_queue_draw (circle->preview);
circle->action_flag = DRAGING;
}
else
{
/* this should be erasing entire angle */
color_rotate_draw_arrows (widget->window, xor_gc, circle->angle);
}
if (circle->mode == EACH)
{
*(circle->target)=clicked_angle;
}
else
{
circle->angle->alpha=angle_mod_2PI(circle->angle->alpha + delta);
circle->angle->beta =angle_mod_2PI(circle->angle->beta + delta);
}
gdk_window_process_updates (widget->window, FALSE);
color_rotate_draw_arrows (widget->window, xor_gc, circle->angle);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->alpha_entry),
circle->angle->alpha *
rcm_units_factor(Current.Units));
gtk_spin_button_set_value (GTK_SPIN_BUTTON (circle->beta_entry),
circle->angle->beta *
rcm_units_factor(Current.Units));
if (Current.RealTime)
rcm_render_preview (Current.Bna->after);
}
gdk_event_request_motions (event);
return TRUE;
}
static void
color_rotate_row (const guchar *src_row,
guchar *dest_row,
gint row,
gint row_width,
gint bytes)
{
gint col, bytenum;
gdouble H, S, V;
guchar rgb[3];
for (col = 0; col < row_width; col++)
{
gboolean skip = FALSE;
rgb[0] = src_row[col * bytes + 0];
rgb[1] = src_row[col * bytes + 1];
rgb[2] = src_row[col * bytes + 2];
gimp_rgb_to_hsv4 (rgb, &H, &S, &V);
if (rcm_is_gray (S))
{
if (Current.Gray_to_from == GRAY_FROM)
{
if (rcm_angle_inside_slice (Current.Gray->hue,
Current.From->angle) <= 1)
{
H = Current.Gray->hue / TP;
S = Current.Gray->satur;
}
else
{
skip = TRUE;
}
}
else
{
skip = TRUE;
gimp_hsv_to_rgb4 (rgb, Current.Gray->hue / TP,
Current.Gray->satur, V);
}
}
if (! skip)
{
H = rcm_linear (rcm_left_end (Current.From->angle),
rcm_right_end (Current.From->angle),
rcm_left_end (Current.To->angle),
rcm_right_end (Current.To->angle),
H * TP);
H = angle_mod_2PI (H) / TP;
gimp_hsv_to_rgb4 (rgb, H, S, V);
}
dest_row[col * bytes + 0] = rgb[0];
dest_row[col * bytes + 1] = rgb[1];
dest_row[col * bytes + 2] = rgb[2];
if (bytes > 3)
{
for (bytenum = 3; bytenum < bytes; bytenum++)
dest_row[col * bytes + bytenum] = src_row[col * bytes + bytenum];
}
}
}
void
rcm_draw_arrows (GdkWindow *window,
GdkGC *color,
RcmAngle *angle)
{
gint dist;
gfloat alpha, beta, cw_ccw, delta;
alpha = angle->alpha;
beta = angle->beta;
cw_ccw = angle->cw_ccw;
delta = angle_mod_2PI(beta - alpha);
if (cw_ccw == -1)
delta = delta - TP;
gdk_draw_line (window,color,
CENTER,
CENTER,
ROUND (CENTER + RADIUS * cos(alpha)),
ROUND (CENTER - RADIUS * sin(alpha)));
gdk_draw_line( window,color,
CENTER + RADIUS * cos(alpha),
CENTER - RADIUS * sin(alpha),
ROUND (CENTER + RADIUS * REL * cos(alpha - DEL)),
ROUND (CENTER - RADIUS * REL * sin(alpha - DEL)));
gdk_draw_line (window,color,
CENTER + RADIUS * cos(alpha),
CENTER - RADIUS * sin(alpha),
ROUND (CENTER + RADIUS * REL * cos(alpha + DEL)),
ROUND (CENTER - RADIUS * REL * sin(alpha + DEL)));
gdk_draw_line (window,color,
CENTER,
CENTER,
ROUND (CENTER + RADIUS * cos(beta)),
ROUND (CENTER - RADIUS * sin(beta)));
gdk_draw_line (window,color,
CENTER + RADIUS * cos(beta),
CENTER - RADIUS * sin(beta),
ROUND (CENTER + RADIUS * REL * cos(beta - DEL)),
ROUND (CENTER - RADIUS * REL * sin(beta - DEL)));
gdk_draw_line (window,color,
CENTER + RADIUS * cos(beta),
CENTER - RADIUS * sin(beta),
ROUND (CENTER + RADIUS * REL * cos(beta + DEL)),
ROUND (CENTER - RADIUS * REL * sin(beta + DEL)));
dist = RADIUS * EACH_OR_BOTH;
gdk_draw_line (window,color,
CENTER + dist * cos(beta),
CENTER - dist * sin(beta),
ROUND (CENTER + dist * cos(beta) + cw_ccw * TICK * sin(beta)),
ROUND (CENTER - dist * sin(beta) + cw_ccw * TICK * cos(beta)));
alpha *= 180 * 64 / G_PI;
delta *= 180 * 64 / G_PI;
gdk_draw_arc (window, color, 0, CENTER - dist, CENTER - dist,
2*dist, 2*dist, alpha, delta);
}
/* render before/after preview */
void
rcm_render_preview (GtkWidget *preview)
{
ReducedImage *reduced;
gint version;
gint RW, RH, bytes, i, j;
guchar *a;
guchar *rgb_array;
gdouble *hsv_array;
gfloat degree;
g_return_if_fail (preview != NULL);
version = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (preview), "mode"));
reduced = Current_c.reduced;
RW = reduced->width;
RH = reduced->height;
bytes = Current_c.drawable->bpp;
hsv_array = reduced->hsv;
rgb_array = reduced->rgb;
a = g_new (guchar, 4 * RW * RH);
if (version == CURRENT)
{
gdouble H, S, V;
guchar rgb[3];
for (i = 0; i < RH; i++)
{
for (j = 0; j < RW; j++)
{
gboolean unchanged = FALSE;
gboolean skip = FALSE;
H = hsv_array[i*RW*bytes + j*bytes + 0];
S = hsv_array[i*RW*bytes + j*bytes + 1];
V = hsv_array[i*RW*bytes + j*bytes + 2];
if (rcm_is_gray(S) && (reduced->mask[i*RW+j] != 0))
{
switch (Current_c.Gray_to_from)
{
case GRAY_FROM:
if (rcm_angle_inside_slice (Current_c.Gray->hue,
Current_c.From->angle) <= 1)
{
H = Current_c.Gray->hue/TP;
S = Current_c.Gray->satur;
}
else
skip = TRUE;
break;
case GRAY_TO:
unchanged = FALSE;
skip = TRUE;
gimp_hsv_to_rgb4 (rgb,
Current_c.Gray->hue/TP,
Current_c.Gray->satur,
V);
break;
default:
break;
}
}
if (!skip)
{
unchanged = FALSE;
H = rcm_linear (rcm_left_end (Current_c.From->angle),
rcm_right_end (Current_c.From->angle),
rcm_left_end (Current_c.To->angle),
rcm_right_end (Current_c.To->angle),
H * TP);
H = angle_mod_2PI(H) / TP;
gimp_hsv_to_rgb4 (rgb, H,S,V);
}
if (unchanged)
degree = 0;
else
degree = reduced->mask[i*RW+j] / 255.0;
a[(i*RW+j)*4+0] = (1-degree) * rgb_array[i*RW*bytes + j*bytes + 0] + degree * rgb[0];
a[(i*RW+j)*4+1] = (1-degree) * rgb_array[i*RW*bytes + j*bytes + 1] + degree * rgb[1];
a[(i*RW+j)*4+2] = (1-degree) * rgb_array[i*RW*bytes + j*bytes + 2] + degree * rgb[2];
/* apply transparency */
if (bytes == 4)
a[(i*RW+j)*4+3] = rgb_array[i*RW*bytes+j*bytes+3];
else
a[(i*RW+j)*4+3] = 255;
}
}
}
else /* ORIGINAL */
{
for (i = 0; i < RH; i++)
{
for (j = 0; j < RW; j++)
{
a[(i*RW+j)*4+0] = rgb_array[i*RW*bytes + j*bytes + 0];
a[(i*RW+j)*4+1] = rgb_array[i*RW*bytes + j*bytes + 1];
a[(i*RW+j)*4+2] = rgb_array[i*RW*bytes + j*bytes + 2];
if (bytes == 4)
a[(i*RW+j)*4+3] = rgb_array[i*RW*bytes+j*bytes+3];
else
a[(i*RW+j)*4+3] = 255;
}
}
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (preview),
0, 0, RW, RH,
GIMP_RGBA_IMAGE,
a,
RW * 4);
g_free (a);
}