C++ GTK_COLOR_CHOOSER函数代码示例

void
glade_gtk_color_button_set_property (GladeWidgetAdaptor * adaptor,
                                     GObject * object,
                                     const gchar * id, const GValue * value)
{
  GladeProperty *property;
  GladeWidget *gwidget = glade_widget_get_from_gobject (object);

  if (!strcmp (id, "color"))
    {
      if ((property = glade_widget_get_property (gwidget, "color")) != NULL &&
	  glade_property_get_enabled (property) && g_value_get_boxed (value))
	{
	  GdkColor *color = g_value_get_boxed (value);
	  GdkRGBA copy;

	  copy.red   = color->red   / 65535.0;
	  copy.green = color->green / 65535.0;
	  copy.blue  = color->blue  / 65535.0;
	  copy.alpha = 1.0;

	  gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (object), &copy);
	}
    }
  else if (!strcmp (id, "rgba"))
    {
      if ((property = glade_widget_get_property (gwidget, "rgba")) != NULL &&
	  glade_property_get_enabled (property) && g_value_get_boxed (value))
	gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (object),
				    (GdkRGBA *) g_value_get_boxed (value));
    }
  else
    GWA_GET_CLASS (GTK_TYPE_BUTTON)->set_property (adaptor, object, id, value);
}

static void
profile_palette_notify_colorpickers_cb (GSettings *profile,
                                        const char *key,
                                        GtkWidget *editor)
{
  GtkWidget *w;
  GtkBuilder *builder;
  gs_free GdkRGBA *colors;
  gsize n_colors, i;

  g_assert (strcmp (key, TERMINAL_PROFILE_PALETTE_KEY) == 0);

  builder = g_object_get_data (G_OBJECT (editor), "builder");
  g_assert (builder != NULL);

  colors = terminal_g_settings_get_rgba_palette (profile, TERMINAL_PROFILE_PALETTE_KEY, &n_colors);

  n_colors = MIN (n_colors, TERMINAL_PALETTE_SIZE);
  for (i = 0; i < n_colors; i++)
    {
      char name[32];
      GdkRGBA old_color;

      g_snprintf (name, sizeof (name), "palette-colorpicker-%" G_GSIZE_FORMAT, i + 1);
      w = (GtkWidget *) gtk_builder_get_object  (builder, name);

      gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (w), &old_color);
      if (!rgba_equal (&old_color, &colors[i]))
        {
          g_signal_handlers_block_by_func (w, G_CALLBACK (palette_color_notify_cb), profile);
          gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (w), &colors[i]);
          g_signal_handlers_unblock_by_func (w, G_CALLBACK (palette_color_notify_cb), profile);
        }
    }
}

void changeColor(GtkColorButton *cb, gpointer data)
{
	GtkStyleContext *context;
	GdkRGBA fg, bg;
	char *css;
	GError *err = NULL;

	context = gtk_widget_get_style_context(button);
	if (current != NULL) {
		gtk_style_context_remove_provider(context, GTK_STYLE_PROVIDER(current));
		g_object_unref(current);
	}
	gtk_color_chooser_get_rgba(GTK_COLOR_CHOOSER(foreground), &fg);
	gtk_color_chooser_get_rgba(GTK_COLOR_CHOOSER(background), &bg);
	css = g_strdup_printf(CSSFormat,
		(int) (fg.red * 255),
		(int) (fg.green * 255),
		(int) (fg.blue * 255),
		(int) (bg.red * 255),
		(int) (bg.green * 255),
		(int) (bg.blue * 255));
	current = gtk_css_provider_new();
	if (gtk_css_provider_load_from_data(current, css, -1, &err) == FALSE)
		g_error("error parsing CSS: %s", err->message);
	gtk_style_context_add_provider(context, GTK_STYLE_PROVIDER(current), GTK_STYLE_PROVIDER_PRIORITY_USER);
	g_free(css);
}

static void
xhairs_opacity_notify_cb (GSettings *settings, gchar *key, GtkColorButton *button)
{
    GdkRGBA rgba;
    gdouble opacity;

    opacity = g_settings_get_double (settings, key);
    gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (button), &rgba);
    rgba.alpha = opacity * 65535;
    gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (button), &rgba);
}

/* Change the sticky note title and color */
void stickynote_change_properties (StickyNote *note)
{
	char *color_str = NULL;

	gtk_entry_set_text(GTK_ENTRY(note->w_entry),
			gtk_label_get_text (GTK_LABEL (note->w_title)));

	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(note->w_def_color),
			note->color == NULL);

	if (note->color)
		color_str = g_strdup (note->color);
	else
	{
		color_str = g_settings_get_string (stickynotes->settings, "default-color");
	}

	if (color_str)
	{
		GdkRGBA color;
		gdk_rgba_parse (&color, color_str);
		gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (note->w_color), &color);
		g_free (color_str);
	}

	if (note->font_color)
		color_str = g_strdup (note->font_color);
	else
	{
		color_str = g_settings_get_string (stickynotes->settings, "default-font-color");
	}

	if (color_str)
	{
		GdkRGBA font_color;
		gdk_rgba_parse (&font_color, color_str);
		gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (note->w_font_color), &font_color);
		g_free (color_str);
	}

	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(note->w_def_font),
			note->font == NULL);
	if (note->font)
		gtk_font_button_set_font_name (GTK_FONT_BUTTON (note->w_font),
				note->font);

	gtk_widget_show (note->w_properties);

	stickynotes_save();
}

void gui_update(dt_iop_module_t *self)
{
  self->request_color_pick = DT_REQUEST_COLORPICK_OFF;

  dt_iop_invert_gui_data_t *g = (dt_iop_invert_gui_data_t *)self->gui_data;
  dt_iop_invert_params_t *p = (dt_iop_invert_params_t *)self->params;

  gtk_widget_set_visible(GTK_WIDGET(g->pickerbuttons), TRUE);
  dtgtk_reset_label_set_text(g->label, _("color of film material"));

  GdkRGBA color = (GdkRGBA){.red = p->color[0], .green = p->color[1], .blue = p->color[2], .alpha = 1.0 };
  gtk_color_chooser_set_rgba(GTK_COLOR_CHOOSER(g->colorpicker), &color);
}

void gui_init(dt_iop_module_t *self)
{
  self->gui_data = g_malloc0(sizeof(dt_iop_invert_gui_data_t));
  dt_iop_invert_gui_data_t *g = (dt_iop_invert_gui_data_t *)self->gui_data;
  dt_iop_invert_params_t *p = (dt_iop_invert_params_t *)self->params;

  self->widget = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5);

  g->label = DTGTK_RESET_LABEL(dtgtk_reset_label_new("", self, &p->color, 3 * sizeof(float)));
  gtk_box_pack_start(GTK_BOX(self->widget), GTK_WIDGET(g->label), TRUE, TRUE, 0);

  g->pickerbuttons = GTK_BOX(gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5));
  gtk_box_pack_start(GTK_BOX(self->widget), GTK_WIDGET(g->pickerbuttons), TRUE, TRUE, 0);

  GdkRGBA color = (GdkRGBA){.red = p->color[0], .green = p->color[1], .blue = p->color[2], .alpha = 1.0 };
  g->colorpicker = gtk_color_button_new_with_rgba(&color);
  gtk_widget_set_size_request(GTK_WIDGET(g->colorpicker), DT_PIXEL_APPLY_DPI(75), DT_PIXEL_APPLY_DPI(24));
  gtk_color_chooser_set_use_alpha(GTK_COLOR_CHOOSER(g->colorpicker), FALSE);
  gtk_color_button_set_title(GTK_COLOR_BUTTON(g->colorpicker), _("select color of film material"));
  g_signal_connect(G_OBJECT(g->colorpicker), "color-set", G_CALLBACK(colorpicker_callback), self);
  gtk_box_pack_start(GTK_BOX(g->pickerbuttons), GTK_WIDGET(g->colorpicker), TRUE, TRUE, 0);

  g->picker = dtgtk_togglebutton_new(dtgtk_cairo_paint_colorpicker, CPF_STYLE_FLAT);
  g_object_set(G_OBJECT(g->picker), "tooltip-text", _("pick color of film material from image"), (char *)NULL);
  gtk_widget_set_size_request(g->picker, DT_PIXEL_APPLY_DPI(24), DT_PIXEL_APPLY_DPI(24));
  g_signal_connect(G_OBJECT(g->picker), "toggled", G_CALLBACK(request_pick_toggled), self);
  gtk_box_pack_start(GTK_BOX(g->pickerbuttons), g->picker, TRUE, TRUE, 5);

  g_signal_connect(G_OBJECT(self->widget), "draw", G_CALLBACK(draw), self);
}

void gui_cleanup(dt_iop_module_t *self)
{
  g_free(self->gui_data);
  self->gui_data = NULL;
}

static void
v_gradient_swap_button_clicked_cb (GtkButton *button,
				   gpointer   user_data)
{
	GthContactSheetThemeDialog *self = user_data;
	GdkRGBA                     color1;
	GdkRGBA                     color2;

	gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (GET_WIDGET ("v_gradient_1_colorpicker")), &color1);
	gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (GET_WIDGET ("v_gradient_2_colorpicker")), &color2);
	gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (GET_WIDGET ("v_gradient_2_colorpicker")), &color1);
	gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (GET_WIDGET ("v_gradient_1_colorpicker")), &color2);
	update_preview (self);
}

static void
drawing_area_color_set (DrawingArea    *area,
                        GdkRGBA        *color,
                        GtkColorButton *button)
{
  gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (button), color);
}

/* Color has changed at settings */
static void _plugin_on_settings_color_change(GObject *inObject,
												GParamSpec *inSpec,
												gpointer inUserData)
{
	XfdashboardClockViewSettings	*settings;
	GtkColorButton					*button;
	ClutterColor					*settingsColor;
	GdkRGBA							widgetColor;

	g_return_if_fail(XFDASHBOARD_IS_CLOCK_VIEW_SETTINGS(inObject));
	g_return_if_fail(GTK_IS_COLOR_BUTTON(inUserData));

	settings=XFDASHBOARD_CLOCK_VIEW_SETTINGS(inObject);
	button=GTK_COLOR_BUTTON(inUserData);

	/* Get current color from settings */
	g_object_get(G_OBJECT(settings), g_param_spec_get_name(inSpec), &settingsColor, NULL);

	/* Convert color for color button */
	widgetColor.red=settingsColor->red/255.0f;
	widgetColor.green=settingsColor->green/255.0f;
	widgetColor.blue=settingsColor->blue/255.0f;
	widgetColor.alpha=settingsColor->alpha/255.0f;

	/* Set converted color at color button */
#if GTK_CHECK_VERSION(3, 4, 0)
	gtk_color_chooser_set_rgba(GTK_COLOR_CHOOSER(button), &widgetColor);
#else
	gtk_color_button_set_rgba(button, &widgetColor);
#endif
}

void gui_update(struct dt_iop_module_t *self)
{
  dt_iop_module_t *module = (dt_iop_module_t *)self;
  dt_iop_watermark_gui_data_t *g = (dt_iop_watermark_gui_data_t *)self->gui_data;
  dt_iop_watermark_params_t *p = (dt_iop_watermark_params_t *)module->params;
  dt_bauhaus_slider_set(g->opacity, p->opacity);
  dt_bauhaus_slider_set_soft(g->scale, p->scale);
  dt_bauhaus_slider_set(g->rotate, p->rotate);
  dt_bauhaus_slider_set(g->x_offset, p->xoffset);
  dt_bauhaus_slider_set(g->y_offset, p->yoffset);
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(g->align[p->alignment]), TRUE);
  _combo_box_set_active_text(g->watermarks, p->filename);
  dt_bauhaus_combobox_set(g->sizeto, p->sizeto);
  gtk_entry_set_text(GTK_ENTRY(g->text), p->text);
  GdkRGBA color = (GdkRGBA){.red = p->color[0], .green = p->color[1], .blue = p->color[2], .alpha = 1.0 };
  gtk_color_chooser_set_rgba(GTK_COLOR_CHOOSER(g->colorpick), &color);
  gtk_font_button_set_font_name(GTK_FONT_BUTTON(g->fontsel), p->font);
}

void init(dt_iop_module_t *module)
{
  module->params = calloc(1, sizeof(dt_iop_watermark_params_t));
  module->params_size = sizeof(dt_iop_watermark_params_t);
  module->default_params = calloc(1, sizeof(dt_iop_watermark_params_t));
  module->default_enabled = 0;
  module->priority = 969; // module order created by iop_dependencies.py, do not edit!
  module->params_size = sizeof(dt_iop_watermark_params_t);
  module->gui_data = NULL;
  dt_iop_watermark_params_t tmp = (dt_iop_watermark_params_t){
    100.0, 100.0, 0.0, 0.0, 4, 0.0, DT_SCALE_IMAGE, { "darktable.svg" }, { "" }, {0.0, 0.0, 0.0}, {"DejaVu Sans 10"}
  }; // opacity,scale,xoffs,yoffs,alignment
  memcpy(module->params, &tmp, sizeof(dt_iop_watermark_params_t));
  memcpy(module->default_params, &tmp, sizeof(dt_iop_watermark_params_t));
}

static void
gtk_color_button_clicked (GtkButton *b)
{
  GtkColorButton *button = GTK_COLOR_BUTTON (b);

  /* if dialog already exists, make sure it's shown and raised */
  ensure_dialog (button);

  gtk_color_chooser_set_use_alpha (GTK_COLOR_CHOOSER (button->priv->cs_dialog),
                                   button->priv->use_alpha);

  gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (button->priv->cs_dialog),
                              &button->priv->rgba);

  gtk_window_present (GTK_WINDOW (button->priv->cs_dialog));
}

static void
dialog_response (GtkDialog *dialog,
                 gint       response,
                 gpointer   data)
{
  if (response == GTK_RESPONSE_CANCEL)
    gtk_widget_hide (GTK_WIDGET (dialog));
  else if (response == GTK_RESPONSE_OK)
    {
      GtkColorButton *button = GTK_COLOR_BUTTON (data);

      gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (dialog),
                                  &button->priv->rgba);

      gtk_widget_hide (GTK_WIDGET (dialog));

      gtk_widget_queue_draw (button->priv->draw_area);

      g_signal_emit (button, color_button_signals[COLOR_SET], 0);

      g_object_freeze_notify (G_OBJECT (button));
      g_object_notify (G_OBJECT (button), "color");
      g_object_notify (G_OBJECT (button), "alpha");
      g_object_notify (G_OBJECT (button), "rgba");
      g_object_thaw_notify (G_OBJECT (button));
    }
}

/* ----------------------------- GtkColorButton ------------------------------ */
static void
glade_gtk_color_button_refresh_color (GtkColorButton * button,
                                      GladeWidget * gbutton)
{
  GladeProperty *property;
  GdkRGBA rgba = { 0, };

  gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (button), &rgba);

  if ((property = glade_widget_get_property (gbutton, "color")) != NULL)
    {
      if (glade_property_get_enabled (property))
	{
	  GdkColor color = { 0, };

	  color.red   = (gint16) (rgba.red * 65535);
	  color.green = (gint16) (rgba.green * 65535);
	  color.blue  = (gint16) (rgba.blue * 65535);

	  glade_command_set_property (property, &color);
	}
    }

  if ((property = glade_widget_get_property (gbutton, "rgba")) != NULL)
    {
      if (glade_property_get_enabled (property))
	glade_command_set_property (property, &rgba);
    }
}

static void
pgd_annot_color_changed (GtkButton     *button,
                         GParamSpec    *pspec,
                         PgdAnnotsDemo *demo)
{
    gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (button), &demo->annot_color);
}

/* A new color was chosen at color button */
static void _plugin_on_color_button_color_chosen(GtkColorButton *inButton,
													gpointer inUserData)
{
	GdkRGBA							widgetColor;
	ClutterColor					settingsColor;
	PluginWidgetSettingsMap			*mapping;

	g_return_if_fail(GTK_IS_COLOR_BUTTON(inButton));

	/* Get color from color button */
#if GTK_CHECK_VERSION(3, 4, 0)
	gtk_color_chooser_get_rgba(GTK_COLOR_CHOOSER(inButton), &widgetColor);
#else
	gtk_color_button_get_rgba(inButton, &widgetColor);
#endif

	/* Convert color for settings */
	settingsColor.red=MIN(255, (gint)(widgetColor.red*255.0f));
	settingsColor.green=MIN(255, (gint)(widgetColor.green*255.0f));
	settingsColor.blue=MIN(255, (gint)(widgetColor.blue*255.0f));
	settingsColor.alpha=MIN(255, (gint)(widgetColor.alpha*255.0f));

	/* Set converted color at settings */
	mapping=(PluginWidgetSettingsMap*)g_object_get_data(G_OBJECT(inButton), CONFIGURATION_MAPPING);
	if(mapping) g_object_set(G_OBJECT(mapping->settings), mapping->property, &settingsColor, NULL);
}