forked from AuroraMiddleware/gtk
607 lines
20 KiB
C
607 lines
20 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2012 Red Hat, Inc.
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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 2 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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* Lesser 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 <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkcoloreditorprivate.h"
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#include "gtkcolorchooserprivate.h"
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#include "gtkcolorplaneprivate.h"
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#include "gtkcolorscaleprivate.h"
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#include "gtkcolorswatchprivate.h"
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#include "gtkcolorutils.h"
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#include "gtkcolorpickerprivate.h"
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#include "gtkgrid.h"
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#include "gtkbutton.h"
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#include "gtkintl.h"
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#include "gtkorientable.h"
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#include "gtkentry.h"
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#include "gtkoverlay.h"
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#include "gtkadjustment.h"
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#include "gtklabel.h"
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#include "gtkrender.h"
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#include "gtkspinbutton.h"
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#include "gtkstylecontext.h"
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#include <math.h>
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struct _GtkColorEditorPrivate
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{
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GtkWidget *overlay;
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GtkWidget *grid;
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GtkWidget *swatch;
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GtkWidget *entry;
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GtkWidget *h_slider;
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GtkWidget *h_popup;
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GtkWidget *h_entry;
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GtkWidget *a_slider;
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GtkWidget *a_popup;
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GtkWidget *a_entry;
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GtkWidget *sv_plane;
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GtkWidget *sv_popup;
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GtkWidget *s_entry;
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GtkWidget *v_entry;
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GtkWidget *current_popup;
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GtkWidget *popdown_focus;
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GtkAdjustment *h_adj;
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GtkAdjustment *s_adj;
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GtkAdjustment *v_adj;
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GtkAdjustment *a_adj;
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GtkWidget *picker_button;
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GtkColorPicker *picker;
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gint popup_position;
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guint text_changed : 1;
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guint use_alpha : 1;
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};
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enum
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{
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PROP_ZERO,
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PROP_RGBA,
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PROP_USE_ALPHA
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};
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static void gtk_color_editor_iface_init (GtkColorChooserInterface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkColorEditor, gtk_color_editor, GTK_TYPE_BOX,
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G_ADD_PRIVATE (GtkColorEditor)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_CHOOSER,
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gtk_color_editor_iface_init))
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static guint
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scale_round (gdouble value, gdouble scale)
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{
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value = floor (value * scale + 0.5);
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value = MAX (value, 0);
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value = MIN (value, scale);
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return (guint)value;
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}
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static void
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entry_set_rgba (GtkColorEditor *editor,
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const GdkRGBA *color)
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{
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gchar *text;
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text = g_strdup_printf ("#%02X%02X%02X",
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scale_round (color->red, 255),
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scale_round (color->green, 255),
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scale_round (color->blue, 255));
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gtk_entry_set_text (GTK_ENTRY (editor->priv->entry), text);
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editor->priv->text_changed = FALSE;
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g_free (text);
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}
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static void
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entry_apply (GtkWidget *entry,
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GtkColorEditor *editor)
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{
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GdkRGBA color;
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gchar *text;
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if (!editor->priv->text_changed)
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return;
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text = gtk_editable_get_chars (GTK_EDITABLE (editor->priv->entry), 0, -1);
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if (gdk_rgba_parse (&color, text))
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{
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color.alpha = gtk_adjustment_get_value (editor->priv->a_adj);
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gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (editor), &color);
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}
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editor->priv->text_changed = FALSE;
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g_free (text);
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}
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static gboolean
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entry_focus_out (GtkWidget *entry,
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GdkEventFocus *event,
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GtkColorEditor *editor)
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{
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entry_apply (entry, editor);
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return FALSE;
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}
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static void
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entry_text_changed (GtkWidget *entry,
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GParamSpec *pspec,
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GtkColorEditor *editor)
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{
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editor->priv->text_changed = TRUE;
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}
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static void
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hsv_changed (GtkColorEditor *editor)
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{
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GdkRGBA color;
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gdouble h, s, v, a;
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h = gtk_adjustment_get_value (editor->priv->h_adj);
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s = gtk_adjustment_get_value (editor->priv->s_adj);
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v = gtk_adjustment_get_value (editor->priv->v_adj);
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a = gtk_adjustment_get_value (editor->priv->a_adj);
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gtk_hsv_to_rgb (h, s, v, &color.red, &color.green, &color.blue);
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color.alpha = a;
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gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (editor->priv->swatch), &color);
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gtk_color_scale_set_rgba (GTK_COLOR_SCALE (editor->priv->a_slider), &color);
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entry_set_rgba (editor, &color);
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g_object_notify (G_OBJECT (editor), "rgba");
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}
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static void
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dismiss_current_popup (GtkColorEditor *editor)
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{
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if (editor->priv->current_popup)
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{
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gtk_widget_hide (editor->priv->current_popup);
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editor->priv->current_popup = NULL;
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editor->priv->popup_position = 0;
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if (editor->priv->popdown_focus)
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{
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if (gtk_widget_is_visible (editor->priv->popdown_focus))
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gtk_widget_grab_focus (editor->priv->popdown_focus);
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g_clear_object (&editor->priv->popdown_focus);
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}
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}
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}
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static void
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popup_edit (GtkWidget *widget,
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GtkColorEditor *editor)
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{
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GtkWidget *popup = NULL;
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GtkWidget *toplevel;
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GtkWidget *focus;
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gint position;
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gint s, e;
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if (widget == editor->priv->sv_plane)
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{
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popup = editor->priv->sv_popup;
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focus = editor->priv->s_entry;
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position = 0;
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}
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else if (widget == editor->priv->h_slider)
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{
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popup = editor->priv->h_popup;
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focus = editor->priv->h_entry;
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gtk_range_get_slider_range (GTK_RANGE (editor->priv->h_slider), &s, &e);
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position = (s + e) / 2;
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}
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else if (widget == editor->priv->a_slider)
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{
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popup = editor->priv->a_popup;
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focus = editor->priv->a_entry;
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gtk_range_get_slider_range (GTK_RANGE (editor->priv->a_slider), &s, &e);
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position = (s + e) / 2;
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}
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if (popup == editor->priv->current_popup)
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dismiss_current_popup (editor);
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else if (popup)
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{
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dismiss_current_popup (editor);
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toplevel = gtk_widget_get_toplevel (GTK_WIDGET (editor));
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g_set_object (&editor->priv->popdown_focus, gtk_window_get_focus (GTK_WINDOW (toplevel)));
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editor->priv->current_popup = popup;
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editor->priv->popup_position = position;
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gtk_widget_show (popup);
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gtk_widget_grab_focus (focus);
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}
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}
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static gboolean
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popup_key_press (GtkWidget *popup,
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GdkEventKey *event,
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GtkColorEditor *editor)
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{
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if (event->keyval == GDK_KEY_Escape)
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{
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dismiss_current_popup (editor);
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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get_child_position (GtkOverlay *overlay,
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GtkWidget *widget,
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GtkAllocation *allocation,
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GtkColorEditor *editor)
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{
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GtkRequisition req;
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GtkAllocation alloc;
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gint s, e;
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gtk_widget_get_preferred_size (widget, &req, NULL);
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allocation->x = 0;
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allocation->y = 0;
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allocation->width = req.width;
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allocation->height = req.height;
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if (widget == editor->priv->sv_popup)
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{
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gtk_widget_translate_coordinates (editor->priv->sv_plane,
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gtk_widget_get_parent (editor->priv->grid),
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0, -6,
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&allocation->x, &allocation->y);
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if (gtk_widget_get_direction (GTK_WIDGET (overlay)) == GTK_TEXT_DIR_RTL)
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allocation->x = 0;
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else
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allocation->x = gtk_widget_get_allocated_width (GTK_WIDGET (overlay)) - req.width;
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}
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else if (widget == editor->priv->h_popup)
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{
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gtk_widget_get_allocation (editor->priv->h_slider, &alloc);
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gtk_range_get_slider_range (GTK_RANGE (editor->priv->h_slider), &s, &e);
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if (gtk_widget_get_direction (GTK_WIDGET (overlay)) == GTK_TEXT_DIR_RTL)
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gtk_widget_translate_coordinates (editor->priv->h_slider,
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gtk_widget_get_parent (editor->priv->grid),
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- req.width - 6, editor->priv->popup_position - req.height / 2,
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&allocation->x, &allocation->y);
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else
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gtk_widget_translate_coordinates (editor->priv->h_slider,
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gtk_widget_get_parent (editor->priv->grid),
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alloc.width + 6, editor->priv->popup_position - req.height / 2,
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&allocation->x, &allocation->y);
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}
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else if (widget == editor->priv->a_popup)
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{
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gtk_widget_get_allocation (editor->priv->a_slider, &alloc);
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gtk_range_get_slider_range (GTK_RANGE (editor->priv->a_slider), &s, &e);
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gtk_widget_translate_coordinates (editor->priv->a_slider,
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gtk_widget_get_parent (editor->priv->grid),
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editor->priv->popup_position - req.width / 2, - req.height - 6,
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&allocation->x, &allocation->y);
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}
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else
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return FALSE;
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allocation->x = CLAMP (allocation->x, 0, gtk_widget_get_allocated_width (GTK_WIDGET (overlay)) - req.width);
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allocation->y = CLAMP (allocation->y, 0, gtk_widget_get_allocated_height (GTK_WIDGET (overlay)) - req.height);
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return TRUE;
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}
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static void
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value_changed (GtkAdjustment *a,
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GtkAdjustment *as)
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{
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gdouble scale;
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scale = gtk_adjustment_get_upper (as) / gtk_adjustment_get_upper (a);
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g_signal_handlers_block_by_func (as, value_changed, a);
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gtk_adjustment_set_value (as, gtk_adjustment_get_value (a) * scale);
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g_signal_handlers_unblock_by_func (as, value_changed, a);
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}
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static GtkAdjustment *
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scaled_adjustment (GtkAdjustment *a,
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gdouble scale)
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{
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GtkAdjustment *as;
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as = gtk_adjustment_new (gtk_adjustment_get_value (a) * scale,
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gtk_adjustment_get_lower (a) * scale,
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gtk_adjustment_get_upper (a) * scale,
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gtk_adjustment_get_step_increment (a) * scale,
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gtk_adjustment_get_page_increment (a) * scale,
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gtk_adjustment_get_page_size (a) * scale);
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g_signal_connect (a, "value-changed", G_CALLBACK (value_changed), as);
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g_signal_connect (as, "value-changed", G_CALLBACK (value_changed), a);
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return as;
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}
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static gboolean
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popup_draw (GtkWidget *popup,
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cairo_t *cr,
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GtkColorEditor *editor)
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{
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GtkStyleContext *context;
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gint width, height;
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context = gtk_widget_get_style_context (popup);
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width = gtk_widget_get_allocated_width (popup);
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height = gtk_widget_get_allocated_height (popup);
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gtk_render_background (context, cr, 0, 0, width, height);
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gtk_render_frame (context, cr, 0, 0, width, height);
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return FALSE;
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}
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static void
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color_picked (GObject *source,
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GAsyncResult *res,
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gpointer data)
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{
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GtkColorPicker *picker = GTK_COLOR_PICKER (source);
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GtkColorEditor *editor = data;
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GError *error = NULL;
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GdkRGBA *color;
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color = gtk_color_picker_pick_finish (picker, res, &error);
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if (color == NULL)
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{
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g_error_free (error);
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}
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else
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{
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gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (editor), color);
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gdk_rgba_free (color);
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}
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}
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static void
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pick_color (GtkButton *button,
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GtkColorEditor *editor)
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{
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gtk_color_picker_pick (editor->priv->picker, color_picked, editor);
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}
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static void
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gtk_color_editor_init (GtkColorEditor *editor)
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{
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editor->priv = gtk_color_editor_get_instance_private (editor);
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editor->priv->use_alpha = TRUE;
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g_type_ensure (GTK_TYPE_COLOR_SCALE);
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g_type_ensure (GTK_TYPE_COLOR_PLANE);
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g_type_ensure (GTK_TYPE_COLOR_SWATCH);
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gtk_widget_init_template (GTK_WIDGET (editor));
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/* Some post processing is needed in code to set this up */
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gtk_widget_set_events (editor->priv->swatch,
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gtk_widget_get_events (editor->priv->swatch)
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& ~(GDK_BUTTON_PRESS_MASK
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| GDK_BUTTON_RELEASE_MASK
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| GDK_KEY_PRESS_MASK
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| GDK_KEY_RELEASE_MASK));
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if (gtk_widget_get_direction (editor->priv->h_slider) == GTK_TEXT_DIR_RTL)
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gtk_style_context_add_class (gtk_widget_get_style_context (editor->priv->h_slider),
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"marks-before");
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else
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gtk_style_context_add_class (gtk_widget_get_style_context (editor->priv->h_slider),
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"marks-after");
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/* Create the scaled popup adjustments manually here because connecting user data is not
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* supported by template GtkBuilder xml (it would be possible to set this up in the xml
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* but require 4 separate callbacks and would be rather ugly).
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*/
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gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON (editor->priv->h_entry), scaled_adjustment (editor->priv->h_adj, 100));
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gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON (editor->priv->s_entry), scaled_adjustment (editor->priv->s_adj, 100));
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gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON (editor->priv->v_entry), scaled_adjustment (editor->priv->v_adj, 100));
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gtk_spin_button_set_adjustment (GTK_SPIN_BUTTON (editor->priv->a_entry), scaled_adjustment (editor->priv->a_adj, 100));
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/* This can be setup in the .ui file, but requires work in Glade otherwise it cannot be edited there */
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gtk_overlay_add_overlay (GTK_OVERLAY (editor->priv->overlay), editor->priv->sv_popup);
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gtk_overlay_add_overlay (GTK_OVERLAY (editor->priv->overlay), editor->priv->h_popup);
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gtk_overlay_add_overlay (GTK_OVERLAY (editor->priv->overlay), editor->priv->a_popup);
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gtk_style_context_remove_class (gtk_widget_get_style_context (editor->priv->swatch), "activatable");
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editor->priv->picker = gtk_color_picker_new ();
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if (editor->priv->picker == NULL)
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gtk_widget_hide (editor->priv->picker_button);
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}
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static void
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gtk_color_editor_dispose (GObject *object)
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{
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GtkColorEditor *editor = GTK_COLOR_EDITOR (object);
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dismiss_current_popup (editor);
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g_clear_object (&editor->priv->picker);
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G_OBJECT_CLASS (gtk_color_editor_parent_class)->dispose (object);
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}
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static void
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gtk_color_editor_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkColorEditor *ce = GTK_COLOR_EDITOR (object);
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GtkColorChooser *cc = GTK_COLOR_CHOOSER (object);
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switch (prop_id)
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{
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case PROP_RGBA:
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{
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GdkRGBA color;
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gtk_color_chooser_get_rgba (cc, &color);
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g_value_set_boxed (value, &color);
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}
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break;
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case PROP_USE_ALPHA:
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g_value_set_boolean (value, gtk_widget_get_visible (ce->priv->a_slider));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_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_editor_set_use_alpha (GtkColorEditor *editor,
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gboolean use_alpha)
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{
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if (editor->priv->use_alpha != use_alpha)
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{
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editor->priv->use_alpha = use_alpha;
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gtk_widget_set_visible (editor->priv->a_slider, use_alpha);
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gtk_color_swatch_set_use_alpha (GTK_COLOR_SWATCH (editor->priv->swatch), use_alpha);
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}
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}
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static void
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gtk_color_editor_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkColorEditor *ce = GTK_COLOR_EDITOR (object);
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GtkColorChooser *cc = GTK_COLOR_CHOOSER (object);
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switch (prop_id)
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{
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case PROP_RGBA:
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gtk_color_chooser_set_rgba (cc, g_value_get_boxed (value));
|
|
break;
|
|
case PROP_USE_ALPHA:
|
|
gtk_color_editor_set_use_alpha (ce, g_value_get_boolean (value));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_color_editor_class_init (GtkColorEditorClass *class)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (class);
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
|
|
|
|
object_class->dispose = gtk_color_editor_dispose;
|
|
object_class->get_property = gtk_color_editor_get_property;
|
|
object_class->set_property = gtk_color_editor_set_property;
|
|
|
|
g_object_class_override_property (object_class, PROP_RGBA, "rgba");
|
|
g_object_class_override_property (object_class, PROP_USE_ALPHA, "use-alpha");
|
|
|
|
/* Bind class to template
|
|
*/
|
|
gtk_widget_class_set_template_from_resource (widget_class,
|
|
"/org/gtk/libgtk/ui/gtkcoloreditor.ui");
|
|
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, overlay);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, grid);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, swatch);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, entry);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, h_slider);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, h_popup);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, h_entry);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, a_slider);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, a_popup);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, a_entry);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, sv_plane);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, sv_popup);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, s_entry);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, v_entry);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, h_adj);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, s_adj);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, v_adj);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, a_adj);
|
|
gtk_widget_class_bind_template_child_private (widget_class, GtkColorEditor, picker_button);
|
|
|
|
gtk_widget_class_bind_template_callback (widget_class, hsv_changed);
|
|
gtk_widget_class_bind_template_callback (widget_class, popup_draw);
|
|
gtk_widget_class_bind_template_callback (widget_class, popup_key_press);
|
|
gtk_widget_class_bind_template_callback (widget_class, dismiss_current_popup);
|
|
gtk_widget_class_bind_template_callback (widget_class, get_child_position);
|
|
gtk_widget_class_bind_template_callback (widget_class, entry_text_changed);
|
|
gtk_widget_class_bind_template_callback (widget_class, entry_apply);
|
|
gtk_widget_class_bind_template_callback (widget_class, entry_focus_out);
|
|
gtk_widget_class_bind_template_callback (widget_class, popup_edit);
|
|
gtk_widget_class_bind_template_callback (widget_class, pick_color);
|
|
}
|
|
|
|
static void
|
|
gtk_color_editor_get_rgba (GtkColorChooser *chooser,
|
|
GdkRGBA *color)
|
|
{
|
|
GtkColorEditor *editor = GTK_COLOR_EDITOR (chooser);
|
|
gdouble h, s, v;
|
|
|
|
h = gtk_adjustment_get_value (editor->priv->h_adj);
|
|
s = gtk_adjustment_get_value (editor->priv->s_adj);
|
|
v = gtk_adjustment_get_value (editor->priv->v_adj);
|
|
gtk_hsv_to_rgb (h, s, v, &color->red, &color->green, &color->blue);
|
|
color->alpha = gtk_adjustment_get_value (editor->priv->a_adj);
|
|
}
|
|
|
|
static void
|
|
gtk_color_editor_set_rgba (GtkColorChooser *chooser,
|
|
const GdkRGBA *color)
|
|
{
|
|
GtkColorEditor *editor = GTK_COLOR_EDITOR (chooser);
|
|
gdouble h, s, v;
|
|
|
|
gtk_rgb_to_hsv (color->red, color->green, color->blue, &h, &s, &v);
|
|
|
|
gtk_adjustment_set_value (editor->priv->h_adj, h);
|
|
gtk_adjustment_set_value (editor->priv->s_adj, s);
|
|
gtk_adjustment_set_value (editor->priv->v_adj, v);
|
|
gtk_adjustment_set_value (editor->priv->a_adj, color->alpha);
|
|
|
|
gtk_color_swatch_set_rgba (GTK_COLOR_SWATCH (editor->priv->swatch), color);
|
|
gtk_color_scale_set_rgba (GTK_COLOR_SCALE (editor->priv->a_slider), color);
|
|
entry_set_rgba (editor, color);
|
|
|
|
g_object_notify (G_OBJECT (editor), "rgba");
|
|
}
|
|
|
|
static void
|
|
gtk_color_editor_iface_init (GtkColorChooserInterface *iface)
|
|
{
|
|
iface->get_rgba = gtk_color_editor_get_rgba;
|
|
iface->set_rgba = gtk_color_editor_set_rgba;
|
|
}
|
|
|
|
GtkWidget *
|
|
gtk_color_editor_new (void)
|
|
{
|
|
return (GtkWidget *) g_object_new (GTK_TYPE_COLOR_EDITOR, NULL);
|
|
}
|