static gboolean _gradient_slider_button_release(GtkWidget *widget, GdkEventButton *event)
{
GtkDarktableGradientSlider *gslider=DTGTK_GRADIENT_SLIDER(widget);
if( event->button==1 && gslider->selected != -1 && gslider->do_reset==FALSE )
{
// First get some dimention info
gslider->is_changed=TRUE;
gdouble newposition = roundf(_screen_to_scale(widget, event->x)/gslider->increment)*gslider->increment;
newposition = CLAMP_RANGE(newposition, 0.0, 1.0);
gint direction = gslider->position[gslider->selected] <= newposition ? MOVE_RIGHT : MOVE_LEFT;
_slider_move(widget, gslider->selected, newposition, direction);
gslider->min = gslider->selected == 0 ? 0.0f : gslider->position[gslider->selected-1];
gslider->max = gslider->selected == gslider->positions-1 ? 1.0f : gslider->position[gslider->selected+1];
gtk_widget_draw(widget,NULL);
gslider->prev_x_root = event->x_root;
gslider->is_dragging=FALSE;
g_signal_emit_by_name(G_OBJECT(widget),"value-changed");
}
return TRUE;
}
static gboolean _gradient_slider_motion_notify(GtkWidget *widget, GdkEventMotion *event)
{
GtkDarktableGradientSlider *gslider=DTGTK_GRADIENT_SLIDER(widget);
if( gslider->is_dragging==TRUE && gslider->selected != -1 && gslider->do_reset==FALSE )
{
assert(gslider->timeout_handle > 0);
gdouble newposition = roundf(_screen_to_scale(widget, event->x)/gslider->increment)*gslider->increment;
newposition = CLAMP_RANGE(newposition, 0.0, 1.0);
gint direction = gslider->position[gslider->selected] <= newposition ? MOVE_RIGHT : MOVE_LEFT;
_slider_move(widget, gslider->selected, newposition, direction);
gslider->min = gslider->selected == 0 ? 0.0f : gslider->position[gslider->selected-1];
gslider->max = gslider->selected == gslider->positions-1 ? 1.0f : gslider->position[gslider->selected+1];
gslider->is_changed = TRUE;
gtk_widget_draw(widget,NULL);
}
return TRUE;
}
static gboolean _gradient_slider_button_press(GtkWidget *widget, GdkEventButton *event)
{
GtkDarktableGradientSlider *gslider=DTGTK_GRADIENT_SLIDER(widget);
if(event->button == 1 && event->type == GDK_2BUTTON_PRESS && gslider->is_resettable)
{
gslider->is_dragging=FALSE;
gslider->do_reset=TRUE;
gslider->selected=-1;
for(int k=0; k<gslider->positions; k++) gslider->position[k] = gslider->resetvalue[k];
gtk_widget_draw(widget,NULL);
g_signal_emit_by_name(G_OBJECT(widget),"value-changed");
}
else if((event->button==1 || event->button==3) && event->type == GDK_BUTTON_PRESS)
{
gint lselected = -1;
gdouble newposition = roundf(_screen_to_scale(widget, event->x)/gslider->increment)*gslider->increment;
gslider->prev_x_root=event->x_root;
assert(gslider->positions > 0);
if(gslider->positions == 1)
{
lselected = 0;
}
else if (newposition <= gslider->position[0])
{
lselected = 0;
}
else if (newposition >= gslider->position[gslider->positions-1])
{
lselected = gslider->positions-1;
}
else for(int k=0; k<=gslider->positions-2; k++)
{
if(newposition >= gslider->position[k] && newposition <= gslider->position[k+1])
{
lselected = newposition - gslider->position[k] < gslider->position[k+1] - newposition ? k : k+1;
break;
}
}
assert(lselected >= 0);
assert(lselected <= gslider->positions-1);
if(event->button==1) // left mouse button : select and start dragging
{
gslider->selected = lselected;
gslider->is_dragging=TRUE;
gslider->do_reset=FALSE;
newposition = CLAMP_RANGE(newposition, 0.0, 1.0);
gint direction = gslider->position[gslider->selected] <= newposition ? MOVE_RIGHT : MOVE_LEFT;
_slider_move(widget, gslider->selected, newposition, direction);
gslider->min = gslider->selected == 0 ? 0.0f : gslider->position[gslider->selected-1];
gslider->max = gslider->selected == gslider->positions-1 ? 1.0f : gslider->position[gslider->selected+1];
g_signal_emit_by_name(G_OBJECT(widget),"value-changed");
}
else if (gslider->positions > 1) // right mouse button: switch on/off selection (only if we have more than one marker)
{
gslider->is_dragging=FALSE;
gslider->do_reset=FALSE;
if(gslider->selected != lselected)
{
gslider->selected = lselected;
gslider->min = gslider->selected == 0 ? 0.0f : gslider->position[gslider->selected-1];
gslider->max = gslider->selected == gslider->positions-1 ? 1.0f : gslider->position[gslider->selected+1];
}
else
gslider->selected = -1;
gtk_widget_draw(widget,NULL);
}
}
return TRUE;
}
