Initial checkin of Pika from heckimp
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/* LIBPIKA - The PIKA Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* pikacolorhexentry.c
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* Copyright (C) 2004 Sven Neumann <sven@gimp.org>
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the 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 Lesser General Public
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* License along with this library. If not, see
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* <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include <gdk/gdkkeysyms.h>
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#include "libpikacolor/pikacolor.h"
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#include "pikawidgetstypes.h"
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#include "pikacellrenderercolor.h"
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#include "pikacolorhexentry.h"
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#include "pikahelpui.h"
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#include "libpika/libpika-intl.h"
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/**
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* SECTION: pikacolorhexentry
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* @title: PikaColorHexEntry
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* @short_description: Widget for entering a color's hex triplet.
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*
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* Widget for entering a color's hex triplet.
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**/
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enum
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{
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COLOR_CHANGED,
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LAST_SIGNAL
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};
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enum
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{
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COLUMN_NAME,
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COLUMN_COLOR,
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NUM_COLUMNS
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};
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struct _PikaColorHexEntryPrivate
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{
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PikaRGB color;
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};
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#define GET_PRIVATE(obj) (((PikaColorHexEntry *) (obj))->priv)
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static void pika_color_hex_entry_constructed (GObject *object);
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static gboolean pika_color_hex_entry_events (GtkWidget *widget,
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GdkEvent *event);
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static gboolean pika_color_hex_entry_events (GtkWidget *widget,
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GdkEvent *event);
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static gboolean pika_color_hex_entry_matched (GtkEntryCompletion *completion,
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GtkTreeModel *model,
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GtkTreeIter *iter,
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PikaColorHexEntry *entry);
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G_DEFINE_TYPE_WITH_PRIVATE (PikaColorHexEntry, pika_color_hex_entry,
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GTK_TYPE_ENTRY)
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#define parent_class pika_color_hex_entry_parent_class
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static guint entry_signals[LAST_SIGNAL] = { 0 };
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static void
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pika_color_hex_entry_class_init (PikaColorHexEntryClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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entry_signals[COLOR_CHANGED] =
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g_signal_new ("color-changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (PikaColorHexEntryClass, color_changed),
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NULL, NULL, NULL,
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G_TYPE_NONE, 0);
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object_class->constructed = pika_color_hex_entry_constructed;
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klass->color_changed = NULL;
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}
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static void
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pika_color_hex_entry_init (PikaColorHexEntry *entry)
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{
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PikaColorHexEntryPrivate *private;
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GtkEntryCompletion *completion;
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GtkCellRenderer *cell;
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GtkListStore *store;
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PikaRGB *colors;
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const gchar **names;
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gint num_colors;
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gint i;
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entry->priv = pika_color_hex_entry_get_instance_private (entry);
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private = GET_PRIVATE (entry);
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/* GtkEntry's minimum size is way too large, set a reasonable one
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* for our use case
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*/
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gtk_entry_set_width_chars (GTK_ENTRY (entry), 8);
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pika_help_set_help_data (GTK_WIDGET (entry),
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_("Hexadecimal color notation as used in HTML and "
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"CSS. This entry also accepts CSS color names."),
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NULL);
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pika_rgba_set (&private->color, 0.0, 0.0, 0.0, 1.0);
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store = gtk_list_store_new (NUM_COLUMNS, G_TYPE_STRING, PIKA_TYPE_RGB);
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pika_rgb_list_names (&names, &colors, &num_colors);
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for (i = 0; i < num_colors; i++)
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{
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GtkTreeIter iter;
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gtk_list_store_append (store, &iter);
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gtk_list_store_set (store, &iter,
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COLUMN_NAME, names[i],
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COLUMN_COLOR, colors + i,
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-1);
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}
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g_free (colors);
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g_free (names);
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completion = g_object_new (GTK_TYPE_ENTRY_COMPLETION,
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"model", store,
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NULL);
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g_object_unref (store);
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cell = pika_cell_renderer_color_new ();
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gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion), cell, FALSE);
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gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (completion), cell,
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"color", COLUMN_COLOR,
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NULL);
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gtk_entry_completion_set_text_column (completion, COLUMN_NAME);
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gtk_entry_set_completion (GTK_ENTRY (entry), completion);
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g_object_unref (completion);
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g_signal_connect (entry, "focus-out-event",
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G_CALLBACK (pika_color_hex_entry_events),
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NULL);
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g_signal_connect (entry, "key-press-event",
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G_CALLBACK (pika_color_hex_entry_events),
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NULL);
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g_signal_connect (completion, "match-selected",
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G_CALLBACK (pika_color_hex_entry_matched),
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entry);
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}
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static void
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pika_color_hex_entry_constructed (GObject *object)
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{
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G_OBJECT_CLASS (parent_class)->constructed (object);
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gtk_entry_set_text (GTK_ENTRY (object), "000000");
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}
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/**
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* pika_color_hex_entry_new:
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*
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* Returns: a new #PikaColorHexEntry widget
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*
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* Since: 2.2
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**/
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GtkWidget *
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pika_color_hex_entry_new (void)
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{
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return g_object_new (PIKA_TYPE_COLOR_HEX_ENTRY, NULL);
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}
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/**
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* pika_color_hex_entry_set_color:
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* @entry: a #PikaColorHexEntry widget
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* @color: pointer to a #PikaRGB
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*
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* Sets the color displayed by a #PikaColorHexEntry. If the new color
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* is different to the previously set color, the "color-changed"
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* signal is emitted.
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*
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* Since: 2.2
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**/
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void
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pika_color_hex_entry_set_color (PikaColorHexEntry *entry,
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const PikaRGB *color)
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{
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PikaColorHexEntryPrivate *private;
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g_return_if_fail (PIKA_IS_COLOR_HEX_ENTRY (entry));
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g_return_if_fail (color != NULL);
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private = GET_PRIVATE (entry);
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if (pika_rgb_distance (&private->color, color) > 0.0)
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{
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gchar buffer[8];
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guchar r, g, b;
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pika_rgb_set (&private->color, color->r, color->g, color->b);
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pika_rgb_clamp (&private->color);
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pika_rgb_get_uchar (&private->color, &r, &g, &b);
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g_snprintf (buffer, sizeof (buffer), "%.2x%.2x%.2x", r, g, b);
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gtk_entry_set_text (GTK_ENTRY (entry), buffer);
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/* move cursor to the end */
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gtk_editable_set_position (GTK_EDITABLE (entry), -1);
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g_signal_emit (entry, entry_signals[COLOR_CHANGED], 0);
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}
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}
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/**
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* pika_color_hex_entry_get_color:
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* @entry: a #PikaColorHexEntry widget
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* @color: (out caller-allocates): pointer to a #PikaRGB
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*
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* Retrieves the color value displayed by a #PikaColorHexEntry.
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*
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* Since: 2.2
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**/
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void
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pika_color_hex_entry_get_color (PikaColorHexEntry *entry,
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PikaRGB *color)
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{
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PikaColorHexEntryPrivate *private;
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g_return_if_fail (PIKA_IS_COLOR_HEX_ENTRY (entry));
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g_return_if_fail (color != NULL);
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private = GET_PRIVATE (entry);
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*color = private->color;
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}
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static gboolean
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pika_color_hex_entry_events (GtkWidget *widget,
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GdkEvent *event)
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{
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PikaColorHexEntry *entry = PIKA_COLOR_HEX_ENTRY (widget);
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PikaColorHexEntryPrivate *private = GET_PRIVATE (entry);
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switch (event->type)
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{
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case GDK_KEY_PRESS:
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{
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GdkEventKey *kevent = (GdkEventKey *) event;
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if (kevent->keyval != GDK_KEY_Return &&
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kevent->keyval != GDK_KEY_KP_Enter &&
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kevent->keyval != GDK_KEY_ISO_Enter)
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break;
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/* else fall through */
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}
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case GDK_FOCUS_CHANGE:
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{
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const gchar *text;
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gchar buffer[8];
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guchar r, g, b;
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text = gtk_entry_get_text (GTK_ENTRY (widget));
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pika_rgb_get_uchar (&private->color, &r, &g, &b);
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g_snprintf (buffer, sizeof (buffer), "%.2x%.2x%.2x", r, g, b);
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if (g_ascii_strcasecmp (buffer, text) != 0)
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{
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PikaRGB color;
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gsize len = strlen (text);
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if (len > 0 &&
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(pika_rgb_parse_hex (&color, text, len) ||
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pika_rgb_parse_name (&color, text, -1)))
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{
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pika_color_hex_entry_set_color (entry, &color);
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}
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else
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{
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gtk_entry_set_text (GTK_ENTRY (entry), buffer);
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}
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}
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}
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break;
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default:
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/* do nothing */
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break;
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}
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return FALSE;
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}
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static gboolean
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pika_color_hex_entry_matched (GtkEntryCompletion *completion,
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GtkTreeModel *model,
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GtkTreeIter *iter,
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PikaColorHexEntry *entry)
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{
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gchar *name;
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PikaRGB color;
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gtk_tree_model_get (model, iter,
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COLUMN_NAME, &name,
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-1);
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if (pika_rgb_parse_name (&color, name, -1))
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pika_color_hex_entry_set_color (entry, &color);
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g_free (name);
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return TRUE;
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}
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