static gboolean _slider_motion_notify(GtkWidget *widget, GdkEventMotion *event)
{
GtkDarktableSlider *slider = DTGTK_SLIDER(widget);
slider->is_sensibility_key_pressed = (event->state & GDK_CONTROL_MASK) ? TRUE : FALSE;
if(slider->is_dragging == TRUE)
{
// First get some dimension info
GdkRectangle vr;
_slider_get_value_area(widget, &vr);
if((slider->prev_x_root < (gint)event->x_root))
slider->motion_direction = 1;
else if(slider->prev_x_root > (gint)event->x_root)
slider->motion_direction = -1;
// Adjust rect to match dimensions for bar
vr.x += DTGTK_SLIDER_BORDER_WIDTH * 2;
vr.width -= (DTGTK_SLIDER_BORDER_WIDTH * 4);
gint vmx = event->x - vr.x;
if(slider->type == DARKTABLE_SLIDER_VALUE
|| (slider->type == DARKTABLE_SLIDER_BAR && slider->is_sensibility_key_pressed == TRUE))
{
gdouble inc = gtk_adjustment_get_step_increment(slider->adjustment);
if(DARKTABLE_SLIDER_VALUE && !slider->is_sensibility_key_pressed) inc *= DTGTK_VALUE_SENSITIVITY;
gdouble value
= gtk_adjustment_get_value(slider->adjustment)
+ (((slider->prev_x_root <= (gint)event->x_root) && slider->motion_direction == 1) ? (inc)
: -(inc));
if(slider->snapsize) value = slider->snapsize * (((int)value) / slider->snapsize);
gtk_adjustment_set_value(slider->adjustment, value);
slider->is_changed = TRUE;
}
else if(slider->type == DARKTABLE_SLIDER_BAR)
{
if(vmx >= 0 && vmx <= vr.width)
{
float value = _slider_translate_pos_to_value(slider->adjustment, &vr, vmx);
if(slider->snapsize) value = slider->snapsize * (((int)value) / slider->snapsize);
gtk_adjustment_set_value(slider->adjustment, value);
}
}
g_signal_emit_by_name(G_OBJECT(widget), "value-changed");
gtk_widget_queue_draw(widget);
slider->prev_x_root = event->x_root;
}
return FALSE;
}
static gboolean _slider_button_release(GtkWidget *widget, GdkEventButton *event)
{
GtkDarktableSlider *slider = DTGTK_SLIDER(widget);
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
if(event->button == 1)
{
/* if x is in slider bar */
if(event->x < (allocation.width - DTGTK_SLIDER_ADJUST_BUTTON_WIDTH - DTGTK_SLIDER_BORDER_WIDTH)
&& event->x >= 0)
{
if(slider->type == DARKTABLE_SLIDER_BAR && !slider->is_sensibility_key_pressed && slider->is_dragging)
{
// First get some dimension info
GdkRectangle vr;
_slider_get_value_area(widget, &vr);
// Adjust rect to match dimensions for bar
vr.x += DTGTK_SLIDER_BORDER_WIDTH * 2;
vr.width -= (DTGTK_SLIDER_BORDER_WIDTH * 4);
gint vmx = event->x - vr.x;
if(vmx >= 0 && vmx <= vr.width)
{
float value = _slider_translate_pos_to_value(slider->adjustment, &vr, vmx);
if(slider->snapsize) value = slider->snapsize * (((int)value) / slider->snapsize);
gtk_adjustment_set_value(slider->adjustment, value);
}
gtk_widget_queue_draw(widget);
slider->prev_x_root = event->x_root;
}
}
slider->is_dragging = FALSE;
g_signal_emit_by_name(G_OBJECT(widget), "value-changed");
}
return TRUE;
}
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;
}