as a #GdkRGBA struct. The property can be set to change the current selection programmatically.
gtk.color_chooser_mixin
Module for [ColorChooser] interface mixin
Templates 2
tmplColorChooserT()
#GtkColorChooser is an interface that is implemented by widgets for choosing colors. Depending on the situation, colors may be allowed to have alpha (translucency).
In GTK+, the main widgets that implement this interface are #GtkColorChooserWidget, #GtkColorChooserDialog and #GtkColorButton.
Functions
gdk.rgba.RGBA rgba()
Get rgba property.
Returns
The ::rgba property contains the currently selected color,
void rgba(gdk.rgba.RGBA propval)
Set rgba property.
Parameters
propval | The ::rgba property contains the currently selected color, as a #GdkRGBA struct. The property can be set to change the current selection programmatically. |
bool useAlpha()
Get useAlpha property.
Returns
When ::use-alpha is true, colors may have alpha (translucency)
information. When it is false, the #GdkRGBA struct obtained via the #GtkColorChooser:rgba property will be forced to have alpha == 1.
Implementations are expected to show alpha by rendering the color over a non-uniform background (like a checkerboard pattern).
void useAlpha(bool propval)
Set useAlpha property.
Parameters
propval | When ::use-alpha is true, colors may have alpha (translucency) information. When it is false, the #GdkRGBA struct obtained via the #GtkColorChooser:rgba property will be forced to have |
alpha | = 1. Implementations are expected to show alpha by rendering the color over a non-uniform background (like a checkerboard pattern). |
void addPalette(gtk.types.Orientation orientation, int colorsPerLine, gdk.rgba.RGBA[] colors = null)
Adds a palette to the color chooser. If orientation is horizontal, the colors are grouped in rows, with colors_per_line colors in each row. If horizontal is false, the colors are grouped in columns instead.
The default color palette of #GtkColorChooserWidget has 27 colors, organized in columns of 3 colors. The default gray palette has 9 grays in a single row.
The layout of the color chooser widget works best when the palettes have 9-10 columns.
Calling this function for the first time has the side effect of removing the default color and gray palettes from the color chooser.
If colors is null, removes all previously added palettes.
Parameters
orientation | [gtk.types.Orientation.Horizontal] if the palette should be displayed in rows, [gtk.types.Orientation.Vertical] for columns |
colorsPerLine | the number of colors to show in each row/column |
colors | the colors of the palette, or null |
void getRgba(out gdk.rgba.RGBA color)
Gets the currently-selected color.
Parameters
color | a #GdkRGBA to fill in with the current color |
bool getUseAlpha()
Returns whether the color chooser shows the alpha channel.
Returns
true if the color chooser uses the alpha channel,
false if not
void setRgba(gdk.rgba.RGBA color)
Sets the color.
Parameters
color | the new color |
void setUseAlpha(bool useAlpha)
Sets whether or not the color chooser should use the alpha channel.
Parameters
useAlpha | true if color chooser should use alpha channel, false if not |
gulong connectColorActivated(T)(T callback, Flag!"After" after = No.After) if (isCallable!T
&& is(ReturnType!T == void)
&& (Parameters!T.length < 1 || (ParameterStorageClassTuple!T[0] == ParameterStorageClass.none && is(Parameters!T[0] == gdk.rgba.RGBA)))
&& (Parameters!T.length < 2 || (ParameterStorageClassTuple!T[1] == ParameterStorageClass.none && is(Parameters!T[1] : gtk.color_chooser.ColorChooser)))
&& Parameters!T.length < 3)
Connect to ColorActivated signal.
Emitted when a color is activated from the color chooser. This usually happens when the user clicks a color swatch, or a color is selected and the user presses one of the keys Space, Shift+Space, Return or Enter.
Parameters
callback | signal callback delegate or function to connect void callback(gdk.rgba.RGBA color, gtk.color_chooser.ColorChooser colorChooser) color the color (optional) colorChooser the instance the signal is connected to (optional) |
after | Yes.After to execute callback after default handler, No.After to execute before (default) |
Returns
Signal ID
tmplColorChooserGidBuilderT()
Functions
T rgba(gdk.rgba.RGBA propval)
Set rgba property.
Parameters
propval | The ::rgba property contains the currently selected color, as a #GdkRGBA struct. The property can be set to change the current selection programmatically. |
Returns
Builder instance for fluent chaining
T useAlpha(bool propval)
Set useAlpha property.
Parameters
propval | When ::use-alpha is true, colors may have alpha (translucency) information. When it is false, the #GdkRGBA struct obtained via the #GtkColorChooser:rgba property will be forced to have |
alpha | = 1. Implementations are expected to show alpha by rendering the color over a non-uniform background (like a checkerboard pattern). |
Returns
Builder instance for fluent chaining