Add GtkColorChoiceButton
This is a new color button implementation built around GtkColorChoice.
This commit is contained in:
Matthias Clasen
@@ -80,6 +80,7 @@
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#include <gtk/gtkcheckbutton.h>
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#include <gtk/gtkcolorbutton.h>
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#include <gtk/gtkcolorchoice.h>
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#include <gtk/gtkcolorchoicebutton.h>
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#include <gtk/gtkcolorchooser.h>
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#include <gtk/gtkcolorchooserdialog.h>
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#include <gtk/gtkcolorchooserwidget.h>
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376
gtk/gtkcolorchoicebutton.c
Normal file
376
gtk/gtkcolorchoicebutton.c
Normal file
@@ -0,0 +1,376 @@
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/*
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* GTK - The GIMP Toolkit
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* Copyright (C) 2022 Red Hat, Inc.
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* All rights reserved.
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*
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* This Library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkcolorchoicebutton.h"
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#include "gtkbinlayout.h"
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#include "gtkbutton.h"
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#include "gtkcolorswatchprivate.h"
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#include "gtkdragsource.h"
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#include "gtkdroptarget.h"
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#include <glib/gi18n-lib.h>
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#include "gtkmain.h"
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#include "gtkmarshalers.h"
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#include "gtkprivate.h"
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#include "gtksnapshot.h"
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#include "gtkwidgetprivate.h"
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static void set_color (GtkColorChoiceButton *self,
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GdkRGBA *color);
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static gboolean drop (GtkDropTarget *dest,
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const GValue *value,
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double x,
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double y,
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GtkColorChoiceButton *self);
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static GdkContentProvider *
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drag_prepare (GtkDragSource *source,
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double x,
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double y,
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GtkColorChoiceButton *self);
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static void button_clicked (GtkColorChoiceButton *self);
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/* {{{ GObject implementation */
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struct _GtkColorChoiceButton
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{
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GtkWidget parent_instance;
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GtkWidget *button;
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GtkWidget *swatch;
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GtkColorChoice *choice;
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};
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/* Properties */
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enum
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{
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PROP_CHOICE = 1,
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PROP_COLOR,
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NUM_PROPERTIES
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};
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static GParamSpec *properties[NUM_PROPERTIES];
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G_DEFINE_TYPE (GtkColorChoiceButton, gtk_color_choice_button, GTK_TYPE_WIDGET)
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static void
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gtk_color_choice_button_init (GtkColorChoiceButton *self)
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{
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PangoLayout *layout;
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PangoRectangle rect;
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GtkDragSource *source;
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GtkDropTarget *dest;
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self->button = gtk_button_new ();
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g_signal_connect_swapped (self->button, "clicked", G_CALLBACK (button_clicked), self);
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gtk_widget_set_parent (self->button, GTK_WIDGET (self));
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self->swatch = g_object_new (GTK_TYPE_COLOR_SWATCH,
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"accessible-role", GTK_ACCESSIBLE_ROLE_IMG,
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"selectable", FALSE,
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"has-menu", FALSE,
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"can-drag", FALSE,
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NULL);
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gtk_widget_set_can_focus (self->swatch, FALSE);
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gtk_widget_remove_css_class (self->swatch, "activatable");
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layout = gtk_widget_create_pango_layout (GTK_WIDGET (self), "Black");
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pango_layout_get_pixel_extents (layout, NULL, &rect);
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g_object_unref (layout);
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gtk_widget_set_size_request (self->swatch, rect.width, rect.height);
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gtk_button_set_child (GTK_BUTTON (self->button), self->swatch);
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dest = gtk_drop_target_new (GDK_TYPE_RGBA, GDK_ACTION_COPY);
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g_signal_connect (dest, "drop", G_CALLBACK (drop), self);
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gtk_widget_add_controller (GTK_WIDGET (self->button), GTK_EVENT_CONTROLLER (dest));
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source = gtk_drag_source_new ();
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g_signal_connect (source, "prepare", G_CALLBACK (drag_prepare), self);
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gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (source),
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GTK_PHASE_CAPTURE);
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gtk_widget_add_controller (self->button, GTK_EVENT_CONTROLLER (source));
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gtk_widget_add_css_class (self->button, "color");
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}
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static void
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gtk_color_choice_button_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkColorChoiceButton *self = GTK_COLOR_CHOICE_BUTTON (object);
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switch (param_id)
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{
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case PROP_CHOICE:
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gtk_color_choice_button_set_choice (self, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
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break;
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}
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}
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static void
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gtk_color_choice_button_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkColorChoiceButton *self = GTK_COLOR_CHOICE_BUTTON (object);
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switch (param_id)
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{
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case PROP_CHOICE:
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g_value_set_object (value, self->choice);
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break;
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case PROP_COLOR:
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{
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GdkRGBA color;
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gtk_color_swatch_get_rgba (GTK_COLOR_SWATCH (self->swatch), &color);
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g_value_set_boxed (value, &color);
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
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break;
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}
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}
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static void
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gtk_color_choice_button_finalize (GObject *object)
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{
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GtkColorChoiceButton *self = GTK_COLOR_CHOICE_BUTTON (object);
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g_clear_object (&self->choice);
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G_OBJECT_CLASS (gtk_color_choice_button_parent_class)->finalize (object);
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}
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static void
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gtk_color_choice_button_class_init (GtkColorChoiceButtonClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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object_class->get_property = gtk_color_choice_button_get_property;
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object_class->set_property = gtk_color_choice_button_set_property;
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object_class->finalize = gtk_color_choice_button_finalize;
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widget_class->grab_focus = gtk_widget_grab_focus_child;
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widget_class->focus = gtk_widget_focus_child;
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properties[PROP_CHOICE] =
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g_param_spec_object ("choice", NULL, NULL,
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GTK_TYPE_COLOR_CHOICE,
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G_PARAM_READWRITE|G_PARAM_STATIC_STRINGS|G_PARAM_EXPLICIT_NOTIFY);
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properties[PROP_COLOR] =
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g_param_spec_boxed ("color", NULL, NULL,
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GDK_TYPE_RGBA,
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G_PARAM_READABLE|G_PARAM_STATIC_STRINGS);
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g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
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gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
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gtk_widget_class_set_css_name (widget_class, "colorbutton");
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}
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/* }}} */
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/* {{{ Private API, callbacks */
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static guint
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scale_round (double value,
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double scale)
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{
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value = floor (value * scale + 0.5);
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value = CLAMP (value, 0, scale);
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return (guint)value;
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}
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static char *
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accessible_color_name (const GdkRGBA *color)
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{
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if (color->alpha < 1.0)
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return g_strdup_printf (_("Red %d%%, Green %d%%, Blue %d%%, Alpha %d%%"),
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scale_round (color->red, 100),
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scale_round (color->green, 100),
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scale_round (color->blue, 100),
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scale_round (color->alpha, 100));
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else
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return g_strdup_printf (_("Red %d%%, Green %d%%, Blue %d%%"),
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scale_round (color->red, 100),
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scale_round (color->green, 100),
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scale_round (color->blue, 100));
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}
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static void
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set_color (GtkColorChoiceButton *self,
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GdkRGBA *color)
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{
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char *text;
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gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (self->swatch), color);
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gtk_color_choice_set_color (self->choice, color);
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text = accessible_color_name (color);
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gtk_accessible_update_property (GTK_ACCESSIBLE (self->swatch),
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GTK_ACCESSIBLE_PROPERTY_LABEL, text,
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-1);
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g_free (text);
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g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_COLOR]);
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}
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static gboolean
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drop (GtkDropTarget *dest,
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const GValue *value,
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double x,
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double y,
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GtkColorChoiceButton *self)
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{
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GdkRGBA *color = g_value_get_boxed (value);
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set_color (self, color);
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return TRUE;
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}
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static GdkContentProvider *
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drag_prepare (GtkDragSource *source,
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double x,
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double y,
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GtkColorChoiceButton *self)
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{
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GdkRGBA color;
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gtk_color_swatch_get_rgba (GTK_COLOR_SWATCH (self->swatch), &color);
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return gdk_content_provider_new_typed (GDK_TYPE_RGBA, &color);
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}
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static void
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color_chosen (GObject *source,
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GAsyncResult *result,
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gpointer data)
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{
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GtkColorChoiceButton *self = data;
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GdkRGBA *color;
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GError *error = NULL;
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color = gtk_color_choice_present_finish (self->choice, result, &error);
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if (color)
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{
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set_color (self, color);
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gdk_rgba_free (color);
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}
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else
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{
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g_print ("%s\n", error->message);
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g_error_free (error);
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}
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}
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static void
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button_clicked (GtkColorChoiceButton *self)
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{
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if (gtk_color_choice_get_parent (self->choice) == NULL)
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{
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GtkRoot *root = gtk_widget_get_root (GTK_WIDGET (self));
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if (GTK_IS_WINDOW (root))
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gtk_color_choice_set_parent (self->choice, GTK_WINDOW (root));
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}
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gtk_color_choice_present (self->choice, NULL, color_chosen, self);
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}
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/* }}} */
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/* {{{ Public API */
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/* {{{ Constructor */
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GtkWidget *
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gtk_color_choice_button_new (GtkColorChoice *choice)
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{
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GtkWidget *self;
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g_return_val_if_fail (GTK_IS_COLOR_CHOICE (choice), NULL);
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if (choice == NULL)
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choice = gtk_color_choice_new ();
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self = g_object_new (GTK_TYPE_COLOR_CHOICE_BUTTON,
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"choice", choice,
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NULL);
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g_clear_object (&choice);
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return self;
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}
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/* }}} */
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/* {{{ Setters and Getters */
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void
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gtk_color_choice_button_set_choice (GtkColorChoiceButton *self,
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GtkColorChoice *choice)
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{
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GdkRGBA color;
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g_return_if_fail (GTK_IS_COLOR_CHOICE_BUTTON (self));
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g_return_if_fail (GTK_IS_COLOR_CHOICE (choice));
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if (!g_set_object (&self->choice, choice))
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return;
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gtk_color_choice_get_color (choice, &color);
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set_color (self, &color);
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g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_CHOICE]);
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}
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GtkColorChoice *
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gtk_color_choice_button_get_choice (GtkColorChoiceButton *self)
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{
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g_return_val_if_fail (GTK_IS_COLOR_CHOICE_BUTTON (self), NULL);
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return self->choice;
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}
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void
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gtk_color_choice_button_get_color (GtkColorChoiceButton *self,
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GdkRGBA *color)
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{
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g_return_if_fail (GTK_IS_COLOR_CHOICE_BUTTON (self));
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g_return_if_fail (color != NULL);
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gtk_color_swatch_get_rgba (GTK_COLOR_SWATCH (self->swatch), color);
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}
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/* }}} */
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/* }}} */
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/* vim:set foldmethod=marker expandtab: */
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50
gtk/gtkcolorchoicebutton.h
Normal file
50
gtk/gtkcolorchoicebutton.h
Normal file
@@ -0,0 +1,50 @@
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/*
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* GTK - The GIMP Toolkit
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* Copyright (C) 2022 Red Hat, Inc.
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* All rights reserved.
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*
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* This Library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public License as
|
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* 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
|
||||
* Library General Public License for more details.
|
||||
*
|
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* You should have received a copy of the GNU Library General Public
|
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
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#endif
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#include <gtk/gtkbutton.h>
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#include <gtk/gtkcolorchoice.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_COLOR_CHOICE_BUTTON (gtk_color_choice_button_get_type ())
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GDK_AVAILABLE_IN_4_10
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G_DECLARE_FINAL_TYPE (GtkColorChoiceButton, gtk_color_choice_button, GTK, COLOR_CHOICE_BUTTON, GtkWidget)
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GDK_AVAILABLE_IN_4_10
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GtkWidget * gtk_color_choice_button_new (GtkColorChoice *choice);
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GDK_AVAILABLE_IN_4_10
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void gtk_color_choice_button_set_choice (GtkColorChoiceButton *self,
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GtkColorChoice *choice);
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GDK_AVAILABLE_IN_4_10
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GtkColorChoice * gtk_color_choice_button_get_choice (GtkColorChoiceButton *self);
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GDK_AVAILABLE_IN_4_10
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void gtk_color_choice_button_get_color (GtkColorChoiceButton *self,
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GdkRGBA *color);
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G_END_DECLS
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@@ -184,6 +184,7 @@ gtk_public_sources = files([
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'gtkcheckbutton.c',
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'gtkcolorbutton.c',
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'gtkcolorchoice.c',
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'gtkcolorchoicebutton.c',
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'gtkcolorchooser.c',
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'gtkcolorchooserdialog.c',
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'gtkcolorchooserwidget.c',
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@@ -441,6 +442,8 @@ gtk_public_headers = files([
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'gtkcenterlayout.h',
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'gtkcheckbutton.h',
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'gtkcolorbutton.h',
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'gtkcolorchoice.h',
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'gtkcolorchoicebutton.h',
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'gtkcolorchooser.h',
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'gtkcolorchooserdialog.h',
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'gtkcolorchooserwidget.h',
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Block a user