/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* * widget-color-combo.c - A color selector combo box * Copyright 2000, 2001, Ximian, Inc. * * Authors: * Miguel de Icaza (miguel@kernel.org) * Dom Lachowicz (dominicl@seas.upenn.edu) * * Reworked and split up into a separate ColorPalette object: * Michael Levy (mlevy@genoscope.cns.fr) * * And later revised and polished by: * Almer S. Tigelaar (almer@gnome.org) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License, version 2, as published by the Free Software Foundation. * * 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. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA * 02111-1307, USA. */ #include #include #include #include #include #include "gal/util/e-util.h" #include "e-colors.h" #include "widget-color-combo.h" enum { CHANGED, LAST_SIGNAL }; static guint color_combo_signals [LAST_SIGNAL] = { 0, }; #define PARENT_TYPE GAL_COMBO_BOX_TYPE static GObjectClass *color_combo_parent_class; #define make_color(CC,COL) (((COL) != NULL) ? (COL) : ((CC) ? ((CC)->default_color) : NULL)) static void color_combo_set_color_internal (ColorCombo *cc, GdkColor *color) { GdkColor *new_color; GdkColor *outline_color; new_color = make_color (cc,color); /* If the new and the default are NULL draw an outline */ outline_color = (new_color) ? new_color : &e_dark_gray; gnome_canvas_item_set (cc->preview_color_item, "fill_color_gdk", new_color, "outline_color_gdk", outline_color, NULL); } static void color_combo_class_init (GObjectClass *object_class) { color_combo_parent_class = g_type_class_ref (PARENT_TYPE); color_combo_signals [CHANGED] = g_signal_new ("color_changed", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ColorComboClass, color_changed), NULL, NULL, e_marshal_NONE__POINTER_BOOLEAN_BOOLEAN_BOOLEAN, G_TYPE_NONE, 4, G_TYPE_POINTER, G_TYPE_BOOLEAN, G_TYPE_BOOLEAN, G_TYPE_BOOLEAN); } E_MAKE_TYPE (color_combo, "ColorCombo", ColorCombo, color_combo_class_init, NULL, PARENT_TYPE) /* * Fires signal "color_changed" with the current color as its param */ static void emit_color_changed (ColorCombo *cc, GdkColor *color, gboolean is_custom, gboolean by_user, gboolean is_default) { g_signal_emit (cc, color_combo_signals [CHANGED], 0, color, is_custom, by_user, is_default); gal_combo_box_popup_hide (GAL_COMBO_BOX (cc)); } static void cb_palette_color_changed (ColorPalette *P, GdkColor *color, gboolean custom, gboolean by_user, gboolean is_default, ColorCombo *cc) { color_combo_set_color_internal (cc, color); emit_color_changed (cc, color, custom, by_user, is_default); } static void preview_clicked (GtkWidget *button, ColorCombo *cc) { gboolean is_default; GdkColor *color = color_palette_get_current_color (cc->palette, &is_default); emit_color_changed (cc, color, FALSE, TRUE, is_default); if (color) gdk_color_free (color); } static void cb_cust_color_clicked (GtkWidget *widget, ColorCombo *cc) { gal_combo_box_popup_hide (GAL_COMBO_BOX (cc)); } /* * Creates the color table */ static void color_table_setup (ColorCombo *cc, char const *no_color_label, ColorGroup *color_group) { g_return_if_fail (cc != NULL); /* Tell the palette that we will be changing it's custom colors */ cc->palette = COLOR_PALETTE (color_palette_new (no_color_label, cc->default_color, color_group)); { GtkWidget *picker = color_palette_get_color_picker (cc->palette); g_signal_connect (picker, "clicked", G_CALLBACK (cb_cust_color_clicked), cc); } g_signal_connect (cc->palette, "color_changed", G_CALLBACK (cb_palette_color_changed), cc); gtk_widget_show_all (GTK_WIDGET (cc->palette)); return; } void color_combo_box_set_preview_relief (ColorCombo *cc, GtkReliefStyle relief) { g_return_if_fail (cc != NULL); g_return_if_fail (IS_COLOR_COMBO (cc)); gtk_button_set_relief (GTK_BUTTON (cc->preview_button), relief); } /* * Where the actual construction goes on */ static void color_combo_construct (ColorCombo *cc, GdkPixbuf *icon, char const *no_color_label, ColorGroup *color_group) { GdkColor *color; g_return_if_fail (cc != NULL); g_return_if_fail (IS_COLOR_COMBO (cc)); /* * Our button with the canvas preview */ cc->preview_button = gtk_button_new (); gtk_button_set_relief (GTK_BUTTON (cc->preview_button), GTK_RELIEF_NONE); cc->preview_canvas = GNOME_CANVAS (gnome_canvas_new ()); gnome_canvas_set_scroll_region (cc->preview_canvas, 0, 0, 24, 24); if (icon) { gnome_canvas_item_new ( GNOME_CANVAS_GROUP (gnome_canvas_root (cc->preview_canvas)), GNOME_TYPE_CANVAS_PIXBUF, "pixbuf", icon, "x", 0.0, "y", 0.0, "anchor", GTK_ANCHOR_NW, NULL); gdk_pixbuf_unref (icon); cc->preview_color_item = gnome_canvas_item_new ( GNOME_CANVAS_GROUP (gnome_canvas_root (cc->preview_canvas)), gnome_canvas_rect_get_type (), "x1", 3.0, "y1", 19.0, "x2", 20.0, "y2", 22.0, "fill_color", "black", "width_pixels", 1, NULL); } else cc->preview_color_item = gnome_canvas_item_new ( GNOME_CANVAS_GROUP (gnome_canvas_root (cc->preview_canvas)), gnome_canvas_rect_get_type (), "x1", 2.0, "y1", 1.0, "x2", 21.0, "y2", 22.0, "fill_color", "black", "width_pixels", 1, NULL); gtk_container_add (GTK_CONTAINER (cc->preview_button), GTK_WIDGET (cc->preview_canvas)); gtk_widget_set_usize (GTK_WIDGET (cc->preview_canvas), 24, 22); g_signal_connect (cc->preview_button, "clicked", G_CALLBACK (preview_clicked), cc); color_table_setup (cc, no_color_label, color_group); gtk_widget_show_all (cc->preview_button); gal_combo_box_construct (GAL_COMBO_BOX (cc), cc->preview_button, GTK_WIDGET (cc->palette)); color = color_palette_get_current_color (cc->palette, NULL); color_combo_set_color_internal (cc, color); if (color) gdk_color_free (color); } /* color_combo_get_color: * * Return current color, result must be freed with gdk_color_free ! */ GdkColor * color_combo_get_color (ColorCombo *cc, gboolean *is_default) { return color_palette_get_current_color (cc->palette, is_default); } /** * color_combo_set_color * @cc The combo * @color The color * * Set the color of the combo to the given color. Causes the color_changed * signal to be emitted. */ void color_combo_set_color (ColorCombo *cc, GdkColor *color) { /* This will change the color on the palette than it will invoke * cb_palette_color_changed which will call emit_color_changed and * set_color_internal which will change the color on our preview and * will let the users of the combo know that the current color has * changed */ if (color != NULL) gdk_rgb_find_color (gtk_widget_get_colormap (GTK_WIDGET (cc)), color); color_palette_set_current_color (cc->palette, color); } /** * color_combo_set_color_to_default * @cc The combo * * Set the color of the combo to the default color. Causes the color_changed * signal to be emitted. */ void color_combo_set_color_to_default (ColorCombo *cc) { color_palette_set_color_to_default (cc->palette); } /** * color_combo_new : * icon : optionally NULL. * , const char *no_color_label, * Default constructor. Pass an optional icon and an optional label for the * no/auto color button. */ GtkWidget * color_combo_new (GdkPixbuf *icon, char const *no_color_label, GdkColor *default_color, ColorGroup *color_group) { ColorCombo *cc; cc = g_object_new (COLOR_COMBO_TYPE, NULL); cc->default_color = default_color; color_combo_construct (cc, icon, no_color_label, color_group); return GTK_WIDGET (cc); }