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Gwyddion Widgets Library Reference Manual | ![]() |
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GwyColorButtonGwyColorButton — A color displaying button |
GwyColorButton; GwyColorButtonClass; GtkWidget* gwy_color_button_new (void); GtkWidget* gwy_color_button_new_with_color (GwyRGBA *color); void gwy_color_button_set_color (GwyColorButton *color_button, GwyRGBA *color); void gwy_color_button_get_color (GwyColorButton *color_button, GwyRGBA *color); void gwy_color_button_set_use_alpha (GwyColorButton *color_button, gboolean use_alpha); gboolean gwy_color_button_get_use_alpha (GwyColorButton *color_button);
GObject +----GtkObject +----GtkWidget +----GtkContainer +----GtkBin +----GtkButton +----GwyColorButton
This widget is somewhat similar to GtkColorButton, or more likely GimpColorButton.
It does not have its own color selection dialog however, it's just an ordinary button displaying a color. You have to connect some callback to its "clicked" signal. Also it uses GwyRGBA instead of GdkColor.
typedef struct { GtkButtonClass parent_class; /* Padding for future expansion */ void (*reserved1)(void); void (*reserved2)(void); } GwyColorButtonClass;
GtkWidget* gwy_color_button_new (void);
Creates a new color button. This returns a widget in the form of a small button containing a swatch representing the current selected color. When the button is clicked, a color-selection dialog will open, allowing the user to select a color. The swatch will be updated to reflect the new color when the user finishes.
Returns : | a new color button. |
GtkWidget* gwy_color_button_new_with_color (GwyRGBA *color);
Creates a new color button.
color : | A GwyRGBA to set the current color with. |
Returns : | a new color button. |
void gwy_color_button_set_color (GwyColorButton *color_button, GwyRGBA *color);
Sets the current color to be color.
color_button : | a GwyColorButton. |
color : | A GwyRGBA to set the current color with. |
void gwy_color_button_get_color (GwyColorButton *color_button, GwyRGBA *color);
Sets color to be the current color in the GwyColorButton widget.
color_button : | a GwyColorButton. |
color : | a GwyRGBA to fill in with the current color. |
void gwy_color_button_set_use_alpha (GwyColorButton *color_button, gboolean use_alpha);
Sets whether or not the color button should use the alpha channel.
color_button : | a GwyColorButton. |
use_alpha : | TRUE if color button should use alpha channel, FALSE if not. |
gboolean gwy_color_button_get_use_alpha (GwyColorButton *color_button);
Does the color selection dialog use the alpha channel?
color_button : | a GwyColorButton. |
Returns : | TRUE if the color sample uses alpha channel, FALSE if not. |
"use-alpha" gboolean : Read / Write
If this property is set to TRUE, the color swatch on the button is rendered against a checkerboard background to show its opacity and the opacity slider is displayed in the color selection dialog.
Default value: FALSE
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