/* GTK - The GIMP Toolkit
*
* Copyright ( C ) 2012 , Red Hat , Inc .
*
* This library is free software ; you can redistribute it and / or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation ; either
* version 2 of the License , or ( at your option ) any later version .
*
* This library is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* Lesser General Public License for more details .
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library . If not , see < http : //www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkcolorchooser.h"
#include "gtkcolorchooserprivate.h"
#include "gtktypebuiltins.h"
#include "gtkprivate.h"
#include "gtksnapshot.h"
#include "gdk/gdkrgbaprivate.h"
/**
* GtkColorChooser :
*
* ` 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
* [ class @ Gtk . ColorChooserWidget ] , [ class @ Gtk . ColorChooserDialog ] and
* [ class @ Gtk . ColorButton ] .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . ColorDialog ] and [ class @ Gtk . ColorDialogButton ]
* instead of widgets implementing ` GtkColorChooser `
*/
enum
{
COLOR_ACTIVATED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
G_DEFINE_INTERFACE (GtkColorChooser, gtk_color_chooser, G_TYPE_OBJECT);
static void
gtk_color_chooser_default_init (GtkColorChooserInterface *iface)
{
/**
* GtkColorChooser : rgba :
*
* The currently selected color , as a ` GdkRGBA ` struct .
*
* The property can be set to change the current selection
* programmatically .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . ColorDialog ] and [ class @ Gtk . ColorDialogButton ]
* instead of widgets implementing ` GtkColorChooser `
*/
g_object_interface_install_property (iface,
g_param_spec_boxed ("rgba" , NULL, NULL,
GDK_TYPE_RGBA,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME));
/**
* GtkColorChooser : use - alpha :
*
* Whether colors may have alpha ( translucency ) .
*
* When : : use - alpha is % FALSE , the ` GdkRGBA ` struct obtained
* via the [ property @ Gtk . ColorChooser : 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 ) .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . ColorDialog ] and [ class @ Gtk . ColorDialogButton ]
* instead of widgets implementing ` GtkColorChooser `
*/
g_object_interface_install_property (iface,
g_param_spec_boolean ("use-alpha" , NULL, NULL,
TRUE ,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkColorChooser : : color - activated :
* @ chooser : the object which received the signal
* @ color : the color
*
* 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 .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . ColorDialog ] and [ class @ Gtk . ColorDialogButton ]
* instead of widgets implementing ` GtkColorChooser `
*/
signals[COLOR_ACTIVATED] =
g_signal_new (I_("color-activated" ),
GTK_TYPE_COLOR_CHOOSER,
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkColorChooserInterface, color_activated),
NULL, NULL,
NULL,
G_TYPE_NONE,
1 , GDK_TYPE_RGBA);
}
void
_gtk_color_chooser_color_activated (GtkColorChooser *chooser,
const GdkRGBA *color)
{
g_signal_emit (chooser, signals[COLOR_ACTIVATED], 0 , color);
}
/**
* gtk_color_chooser_get_rgba :
* @ chooser : a ` GtkColorChooser `
* @ color : ( out ) : a ` GdkRGBA ` to fill in with the current color
*
* Gets the currently - selected color .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . ColorDialog ] instead
*/
void
gtk_color_chooser_get_rgba (GtkColorChooser *chooser,
GdkRGBA *color)
{
g_return_if_fail (GTK_IS_COLOR_CHOOSER (chooser));
GTK_COLOR_CHOOSER_GET_IFACE (chooser)->get_rgba (chooser, color);
}
/**
* gtk_color_chooser_set_rgba :
* @ chooser : a ` GtkColorChooser `
* @ color : the new color
*
* Sets the color .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . ColorDialog ] instead
*/
void
gtk_color_chooser_set_rgba (GtkColorChooser *chooser,
const GdkRGBA *color)
{
g_return_if_fail (GTK_IS_COLOR_CHOOSER (chooser));
g_return_if_fail (color != NULL);
GTK_COLOR_CHOOSER_GET_IFACE (chooser)->set_rgba (chooser, color);
}
/**
* gtk_color_chooser_get_use_alpha :
* @ chooser : a ` GtkColorChooser `
*
* Returns whether the color chooser shows the alpha channel .
*
* Returns : % TRUE if the color chooser uses the alpha channel ,
* % FALSE if not
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . ColorDialog ] instead
*/
gboolean
gtk_color_chooser_get_use_alpha (GtkColorChooser *chooser)
{
gboolean use_alpha;
g_return_val_if_fail (GTK_IS_COLOR_CHOOSER (chooser), TRUE );
g_object_get (chooser, "use-alpha" , &use_alpha, NULL);
return use_alpha;
}
/**
* gtk_color_chooser_set_use_alpha :
* @ chooser : a ` GtkColorChooser `
* @ use_alpha : % TRUE if color chooser should use alpha channel , % FALSE if not
*
* Sets whether or not the color chooser should use the alpha channel .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . ColorDialog ] instead
*/
void
gtk_color_chooser_set_use_alpha (GtkColorChooser *chooser,
gboolean use_alpha)
{
g_return_if_fail (GTK_IS_COLOR_CHOOSER (chooser));
g_object_set (chooser, "use-alpha" , use_alpha, NULL);
}
/**
* gtk_color_chooser_add_palette :
* @ chooser : a ` GtkColorChooser `
* @ orientation : % GTK_ORIENTATION_HORIZONTAL if the palette should
* be displayed in rows , % GTK_ORIENTATION_VERTICAL for columns
* @ colors_per_line : the number of colors to show in each row / column
* @ n_colors : the total number of elements in @ colors
* @ colors : ( nullable ) ( array length = n_colors ) : the colors of the palette
*
* 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 [ class @ Gtk . ColorChooserWidget ] has
* 45 colors , organized in columns of 5 colors ( this includes some
* grays ) .
*
* 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 palette from the color chooser .
*
* If @ colors is % NULL , removes all previously added palettes .
*
* Deprecated : 4 . 10 : Use [ class @ Gtk . ColorDialog ] instead
*/
void
gtk_color_chooser_add_palette (GtkColorChooser *chooser,
GtkOrientation orientation,
int colors_per_line,
int n_colors,
GdkRGBA *colors)
{
g_return_if_fail (GTK_IS_COLOR_CHOOSER (chooser));
if (GTK_COLOR_CHOOSER_GET_IFACE (chooser)->add_palette)
GTK_COLOR_CHOOSER_GET_IFACE (chooser)->add_palette (chooser, orientation, colors_per_line, n_colors, colors);
}
void
_gtk_color_chooser_snapshot_checkered_pattern (GtkSnapshot *snapshot,
int width,
int height)
{
const GdkRGBA color1 = GDK_RGBA("A8A8A8" );
const GdkRGBA color2 = GDK_RGBA("545454" );
gtk_snapshot_push_repeat (snapshot, &GRAPHENE_RECT_INIT (0 , 0 , width, height), NULL);
gtk_snapshot_append_color (snapshot, &color1, &GRAPHENE_RECT_INIT (0 , 0 , 10 , 10 ));
gtk_snapshot_append_color (snapshot, &color2, &GRAPHENE_RECT_INIT (10 , 0 , 10 , 10 ));
gtk_snapshot_append_color (snapshot, &color2, &GRAPHENE_RECT_INIT (0 , 10 , 10 , 10 ));
gtk_snapshot_append_color (snapshot, &color1, &GRAPHENE_RECT_INIT (10 , 10 , 10 , 10 ));
gtk_snapshot_pop (snapshot);
}
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