static void _gradient_slider_realize(GtkWidget *widget)
{
GdkWindowAttr attributes;
guint attributes_mask;
g_return_if_fail(widget != NULL);
g_return_if_fail(DTGTK_IS_GRADIENT_SLIDER(widget));
GTK_WIDGET_SET_FLAGS(widget, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = 100;
attributes.height = 17;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.event_mask = gtk_widget_get_events(widget) | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_POINTER_MOTION_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y;
widget->window = gdk_window_new(
gtk_widget_get_parent_window (widget),
& attributes, attributes_mask
);
gdk_window_set_user_data(widget->window, widget);
widget->style = gtk_style_attach(widget->style, widget->window);
gtk_style_set_background(widget->style, widget->window, GTK_STATE_NORMAL);
}
static void _gradient_slider_size_request(GtkWidget *widget,GtkRequisition *requisition)
{
g_return_if_fail(widget != NULL);
g_return_if_fail(DTGTK_IS_GRADIENT_SLIDER(widget));
g_return_if_fail(requisition != NULL);
requisition->width = 100;
requisition->height = 17;
}
static void _gradient_slider_destroy(GtkObject *object)
{
GtkDarktableGradientSliderClass *klass;
g_return_if_fail(object != NULL);
g_return_if_fail(DTGTK_IS_GRADIENT_SLIDER(object));
// TODO: Free colorentries
klass = gtk_type_class(gtk_widget_get_type());
if (GTK_OBJECT_CLASS(klass)->destroy)
{
(* GTK_OBJECT_CLASS(klass)->destroy) (object);
}
}
static void _gradient_slider_destroy(GtkObject *object)
{
GtkDarktableGradientSliderClass *klass;
g_return_if_fail(object != NULL);
g_return_if_fail(DTGTK_IS_GRADIENT_SLIDER(object));
if(DTGTK_GRADIENT_SLIDER(object)->timeout_handle) g_source_remove(DTGTK_GRADIENT_SLIDER(object)->timeout_handle);
DTGTK_GRADIENT_SLIDER(object)->timeout_handle = 0;
if(DTGTK_GRADIENT_SLIDER(object)->colors)
{
g_list_foreach(DTGTK_GRADIENT_SLIDER(object)->colors, (GFunc)g_free, NULL);
g_list_free(DTGTK_GRADIENT_SLIDER(object)->colors);
DTGTK_GRADIENT_SLIDER(object)->colors = NULL;
}
klass = gtk_type_class(gtk_widget_get_type());
if (GTK_OBJECT_CLASS(klass)->destroy)
{
(* GTK_OBJECT_CLASS(klass)->destroy) (object);
}
}
static gboolean _gradient_slider_expose(GtkWidget *widget, GdkEventExpose *event)
{
GtkDarktableGradientSlider *gslider=DTGTK_GRADIENT_SLIDER(widget);
assert(gslider->position > 0);
g_return_val_if_fail(widget != NULL, FALSE);
g_return_val_if_fail(DTGTK_IS_GRADIENT_SLIDER(widget), FALSE);
g_return_val_if_fail(event != NULL, FALSE);
GtkStyle *style=gtk_rc_get_style_by_paths(gtk_settings_get_default(), NULL,"GtkButton", GTK_TYPE_BUTTON);
if(!style) style = gtk_rc_get_style(widget);
int state = gtk_widget_get_state(widget);
/*int x = widget->allocation.x;
int y = widget->allocation.y;*/
int width = widget->allocation.width;
int height = widget->allocation.height;
int margins = gslider->margins;
// Begin cairo drawing
cairo_t *cr;
cr = gdk_cairo_create(widget->window);
// First build the cairo gradient and then fill the gradient
float gheight=height/2.0;
float gwidth=width-2*margins;
GList *current=NULL;
cairo_pattern_t *gradient=NULL;
if((current=g_list_first(gslider->colors)) != NULL)
{
gradient=cairo_pattern_create_linear(0,0,gwidth,gheight);
do
{
_gradient_slider_stop_t *stop=(_gradient_slider_stop_t *)current->data;
cairo_pattern_add_color_stop_rgb(gradient,stop->position,stop->color.red/65535.0,stop->color.green/65535.0,stop->color.blue/65535.0);
}
while((current=g_list_next(current))!=NULL);
}
if(gradient!=NULL) // Do we got a gradient, lets draw it
{
cairo_set_line_width(cr,0.1);
cairo_set_line_cap(cr,CAIRO_LINE_CAP_ROUND);
cairo_set_source(cr,gradient);
cairo_rectangle(cr,margins,(height-gheight)/2.0,gwidth,gheight);
cairo_fill(cr);
cairo_stroke(cr);
}
// Lets draw position arrows
cairo_set_source_rgba(cr,
style->fg[state].red/65535.0,
style->fg[state].green/65535.0,
style->fg[state].blue/65535.0,
1.0
);
// do we have a picker value to draw?
gdouble *picker = gslider->picker;
if(picker[0] >= 0.0 && picker[0] <= 1.0)
{
int vx_min=_scale_to_screen(widget, picker[1]);
int vx_max=_scale_to_screen(widget, picker[2]);
int vx_avg=_scale_to_screen(widget, picker[0]);
cairo_set_source_rgba(cr,
style->fg[state].red/65535.0,
style->fg[state].green/65535.0,
style->fg[state].blue/65535.0,
0.33
);
cairo_rectangle(cr,vx_min,(height-gheight)/2.0,fmax((float)vx_max-vx_min, 0.0f),gheight);
cairo_fill(cr);
cairo_set_source_rgba(cr,
style->fg[state].red/65535.0,
style->fg[state].green/65535.0,
style->fg[state].blue/65535.0,
1.0
);
cairo_move_to(cr,vx_avg,(height-gheight)/2.0);
cairo_line_to(cr,vx_avg,(height+gheight)/2.0);
cairo_set_antialias(cr,CAIRO_ANTIALIAS_NONE);
cairo_set_line_width(cr,1.0);
cairo_stroke(cr);
}
int indirect[GRADIENT_SLIDER_MAX_POSITIONS];
for(int k=0; k<gslider->positions; k++)
indirect[k] = gslider->selected == -1 ? k : (gslider->selected + 1 + k) % gslider->positions;
for(int k=0; k<gslider->positions; k++)
{
int l = indirect[k];
int vx=_scale_to_screen(widget, gslider->position[l]);
int mk=gslider->marker[l];
int sz=(mk & (1<<3)) ? 13 : 10; // big or small marker?
if(l == gslider->selected && (gslider->is_entered == TRUE || gslider->is_dragging == TRUE))
{
cairo_set_source_rgba(cr,
style->fg[state].red/65535.0,
style->fg[state].green/65535.0,
style->fg[state].blue/65535.0 * 0.5,
1.0
);
}
else
{
cairo_set_source_rgba(cr,
style->fg[state].red/65535.0*0.8,
style->fg[state].green/65535.0*0.8,
style->fg[state].blue/65535.0*0.8,
1.0
);
}
#if 0
if(sz < 10)
{
// supporting line for small markers
cairo_move_to(cr,vx,2);
cairo_line_to(cr,vx,height-2);
cairo_set_antialias(cr,CAIRO_ANTIALIAS_NONE);
cairo_set_line_width(cr,1.0);
cairo_stroke(cr);
}
#endif
cairo_set_antialias(cr,CAIRO_ANTIALIAS_DEFAULT);
if(mk & 0x04) /* upper arrow */
{
if (mk & 0x01) /* filled */
dtgtk_cairo_paint_solid_triangle(cr, vx-sz/2, sz < 10 ? 1 : -2,sz,sz,CPF_DIRECTION_DOWN);
else
dtgtk_cairo_paint_triangle(cr, vx-sz/2, sz < 10 ? 1 : -2,sz,sz,CPF_DIRECTION_DOWN);
}
if(mk & 0x02) /* lower arrow */
{
if (mk & 0x01) /* filled */
dtgtk_cairo_paint_solid_triangle(cr, vx-sz/2,sz < 10 ? height-6 : height-11,sz,sz,CPF_DIRECTION_UP);
else
dtgtk_cairo_paint_triangle(cr, vx-sz/2,sz < 10 ? height-6 : height-11,sz,sz,CPF_DIRECTION_UP);
}
}
cairo_destroy(cr);
return FALSE;
}
