static void _slider_realize(GtkWidget *widget)
{
g_return_if_fail(widget != NULL);
g_return_if_fail(DTGTK_IS_SLIDER(widget));
GdkWindowAttr attributes;
guint attributes_mask;
GtkWidgetClass* klass = GTK_WIDGET_CLASS (_slider_parent_class);
if (klass->realize)
klass->realize (widget);
gtk_widget_set_realized(widget, TRUE);
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = 100;
attributes.height = DTGTK_SLIDER_CONTROL_MIN_HEIGHT;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.event_mask = gtk_widget_get_events(widget) | GDK_EXPOSURE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y;
gtk_widget_set_window(widget, gdk_window_new( gtk_widget_get_parent_window (gtk_widget_get_parent(widget)),& attributes, attributes_mask));
gdk_window_set_user_data(gtk_widget_get_window(widget), widget);
gtk_widget_set_style(widget, gtk_style_attach(gtk_widget_get_style(widget), gtk_widget_get_window(widget)));
gtk_style_set_background(gtk_widget_get_style(widget), gtk_widget_get_window(widget), GTK_STATE_NORMAL);
}
static void _slider_size_request(GtkWidget *widget,GtkRequisition *requisition)
{
g_return_if_fail(widget != NULL);
g_return_if_fail(DTGTK_IS_SLIDER(widget));
g_return_if_fail(requisition != NULL);
GTK_WIDGET_CLASS(_slider_parent_class)->size_request(widget, requisition);
requisition->width = 100;
requisition->height = DTGTK_SLIDER_CONTROL_MIN_HEIGHT;
}
static void _slider_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
{
g_return_if_fail(widget != NULL);
g_return_if_fail(DTGTK_IS_SLIDER(widget));
g_return_if_fail(allocation != NULL);
gtk_widget_set_allocation(widget, allocation);
GTK_WIDGET_CLASS(_slider_parent_class)->size_allocate(widget, allocation);
if(gtk_widget_get_realized(widget))
{
gdk_window_move_resize(gtk_widget_get_window(widget), allocation->x, allocation->y, allocation->width,
allocation->height);
if(DTGTK_SLIDER(widget)->is_entry_active == FALSE) gtk_widget_hide(DTGTK_SLIDER(widget)->entry);
}
}
static gboolean _slider_expose(GtkWidget *widget, GdkEventExpose *event)
{
g_return_val_if_fail(widget != NULL, FALSE);
g_return_val_if_fail(DTGTK_IS_SLIDER(widget), FALSE);
g_return_val_if_fail(event != NULL, FALSE);
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
if (allocation.width<=1) return 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);
GtkDarktableSlider *slider=DTGTK_SLIDER(widget);
int state = gtk_widget_get_state(widget);
int width = allocation.width;
int height = allocation.height;
/* get value fill rectangle constraints*/
GdkRectangle vr;
_slider_get_value_area(widget,&vr);
/* create cairo context */
cairo_t *cr;
cr = gdk_cairo_create(gtk_widget_get_window(widget));
/* hardcode state for the rest of control */
state = GTK_STATE_NORMAL;
/* fill value rect */
gfloat value = gtk_adjustment_get_value(slider->adjustment);
/* convert scale value to range 0.0-1.0*/
gfloat vscale = (value - gtk_adjustment_get_lower(slider->adjustment)) /
(gtk_adjustment_get_upper(slider->adjustment) -
gtk_adjustment_get_lower(slider->adjustment)
);
cairo_set_source_rgba(cr,
(style->fg[state].red/65535.0)*1.7,
(style->fg[state].green/65535.0)*1.7,
(style->fg[state].blue/65535.0)*1.7,
0.2
);
_slider_draw_rounded_rect(cr,vr.x,vr.y,vr.width*vscale,vr.height,3,1);
/* setup font using family from style */
const gchar *font_family = pango_font_description_get_family(style->font_desc);
cairo_select_font_face (cr, font_family, CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_NORMAL);
cairo_text_extents_t ext;
/* Draw label */
cairo_set_source_rgba(cr,
(style->text[state].red/65535.0)*1.7,
(style->text[state].green/65535.0)*1.7,
(style->text[state].blue/65535.0)*1.7,
0.8);
gchar *label = (gchar *)g_object_get_data(G_OBJECT(widget),DTGTK_SLIDER_LABEL_KEY);
if (label)
{
cairo_set_font_size(cr,vr.height*0.5);
cairo_text_extents(cr, "j`", &ext);
cairo_move_to(cr, vr.x+(DTGTK_SLIDER_BORDER_WIDTH*2),vr.y+ext.height);
cairo_show_text(cr, label);
/* store the size of the label. doing it in dtgtk_slider_set_label doesn't work as the widget isn't created yet. */
if(slider->labelwidth == 0 && slider->labelheight == 0)
{
cairo_text_extents(cr, label, &ext);
slider->labelwidth = vr.x+(DTGTK_SLIDER_BORDER_WIDTH*2)+ext.width+(DTGTK_SLIDER_BORDER_WIDTH*2);
slider->labelheight = vr.y+ext.height+(DTGTK_SLIDER_BORDER_WIDTH*2);
}
}
/* Draw value unit */
gchar *unit = (gchar *)g_object_get_data (G_OBJECT(slider),DTGTK_SLIDER_VALUE_UNIT_KEY);
cairo_set_font_size(cr,vr.height*0.45);
cairo_text_extents(cr, "%%", &ext);
int unitwidth = ext.width;
if(unit)
{
cairo_move_to(cr, vr.x+vr.width-ext.width - (DTGTK_SLIDER_BORDER_WIDTH) ,vr.y+vr.height-(DTGTK_SLIDER_BORDER_WIDTH*2));
cairo_show_text(cr, unit);
}
/* Draw text value */
cairo_select_font_face (cr, font_family, CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_BOLD);
char sv[32]= {0};
if (slider->force_sign)
sprintf(sv,"%+.*f",slider->digits,value);
else
sprintf(sv,"%.*f",slider->digits,value);
cairo_set_font_size(cr,vr.height*0.5);
cairo_text_extents(cr, sv, &ext);
cairo_move_to(cr, vr.x+vr.width-ext.width - unitwidth -(DTGTK_SLIDER_BORDER_WIDTH*3) ,vr.y+vr.height-(DTGTK_SLIDER_BORDER_WIDTH*2));
cairo_show_text(cr, sv);
/* draw up/down arrows */
dtgtk_cairo_paint_arrow(cr,
width-DTGTK_SLIDER_ADJUST_BUTTON_WIDTH-DTGTK_SLIDER_BORDER_WIDTH, DTGTK_SLIDER_BORDER_WIDTH*2,
DTGTK_SLIDER_ADJUST_BUTTON_WIDTH, DTGTK_SLIDER_ADJUST_BUTTON_WIDTH-4,
CPF_DIRECTION_UP);
dtgtk_cairo_paint_arrow(cr,
width-DTGTK_SLIDER_ADJUST_BUTTON_WIDTH-DTGTK_SLIDER_BORDER_WIDTH, height-DTGTK_SLIDER_ADJUST_BUTTON_WIDTH+4-DTGTK_SLIDER_BORDER_WIDTH*2,
DTGTK_SLIDER_ADJUST_BUTTON_WIDTH, DTGTK_SLIDER_ADJUST_BUTTON_WIDTH-4,
CPF_DIRECTION_DOWN);
cairo_destroy(cr);
return TRUE;
}
