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gimp/app/widgets/gimpcolormapeditor.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpcontainer.h"
#include "core/gimpimage.h"
#include "core/gimpimage-colormap.h"
#include "core/gimpmarshal.h"
#include "core/gimppalette.h"
#include "gimpcolormapeditor.h"
#include "gimpdnd.h"
#include "gimpdocked.h"
#include "gimpmenufactory.h"
#include "gimppaletteview.h"
#include "gimpuimanager.h"
#include "gimpviewrendererpalette.h"
#include "gimp-intl.h"
#define BORDER 6
#define EPSILON 1e-10
#define HAVE_COLORMAP(image) \
(image != NULL && \
gimp_image_base_type (image) == GIMP_INDEXED && \
gimp_image_get_colormap (image) != NULL)
static void gimp_colormap_editor_docked_iface_init (GimpDockedInterface *face);
static void gimp_colormap_editor_constructed (GObject *object);
static void gimp_colormap_editor_dispose (GObject *object);
static void gimp_colormap_editor_finalize (GObject *object);
static void gimp_colormap_editor_unmap (GtkWidget *widget);
static void gimp_colormap_editor_set_image (GimpImageEditor *editor,
GimpImage *image);
static void gimp_colormap_editor_set_context (GimpDocked *docked,
GimpContext *context);
static PangoLayout *
gimp_colormap_editor_create_layout (GtkWidget *widget);
static void gimp_colormap_editor_update_entries (GimpColormapEditor *editor);
static gboolean gimp_colormap_preview_expose (GtkWidget *widget,
GdkEventExpose *event,
GimpColormapEditor *editor);
static void gimp_colormap_editor_entry_clicked (GimpPaletteView *view,
GimpPaletteEntry *entry,
GdkModifierType state,
GimpColormapEditor *editor);
static void gimp_colormap_editor_entry_selected (GimpPaletteView *view,
GimpPaletteEntry *entry,
GimpColormapEditor *editor);
static void gimp_colormap_editor_entry_activated (GimpPaletteView *view,
GimpPaletteEntry *entry,
GimpColormapEditor *editor);
static void gimp_colormap_editor_entry_context (GimpPaletteView *view,
GimpPaletteEntry *entry,
GimpColormapEditor *editor);
static void gimp_colormap_editor_color_dropped (GimpPaletteView *view,
GimpPaletteEntry *entry,
const GimpRGB *color,
GimpColormapEditor *editor);
static void gimp_colormap_adjustment_changed (GtkAdjustment *adjustment,
GimpColormapEditor *editor);
static void gimp_colormap_hex_entry_changed (GimpColorHexEntry *entry,
GimpColormapEditor *editor);
static void gimp_colormap_image_mode_changed (GimpImage *image,
GimpColormapEditor *editor);
static void gimp_colormap_image_colormap_changed (GimpImage *image,
gint ncol,
GimpColormapEditor *editor);
G_DEFINE_TYPE_WITH_CODE (GimpColormapEditor, gimp_colormap_editor,
GIMP_TYPE_IMAGE_EDITOR,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_DOCKED,
gimp_colormap_editor_docked_iface_init))
#define parent_class gimp_colormap_editor_parent_class
static GimpDockedInterface *parent_docked_iface = NULL;
static void
gimp_colormap_editor_class_init (GimpColormapEditorClass* klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GimpImageEditorClass *image_editor_class = GIMP_IMAGE_EDITOR_CLASS (klass);
object_class->constructed = gimp_colormap_editor_constructed;
object_class->dispose = gimp_colormap_editor_dispose;
object_class->finalize = gimp_colormap_editor_finalize;
widget_class->unmap = gimp_colormap_editor_unmap;
image_editor_class->set_image = gimp_colormap_editor_set_image;
}
static void
gimp_colormap_editor_docked_iface_init (GimpDockedInterface *iface)
{
parent_docked_iface = g_type_interface_peek_parent (iface);
if (! parent_docked_iface)
parent_docked_iface = g_type_default_interface_peek (GIMP_TYPE_DOCKED);
iface->set_context = gimp_colormap_editor_set_context;
}
static void
gimp_colormap_editor_init (GimpColormapEditor *editor)
{
GtkWidget *frame;
GtkWidget *table;
GtkObject *adj;
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (editor), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
editor->view = gimp_view_new_full_by_types (NULL,
GIMP_TYPE_PALETTE_VIEW,
GIMP_TYPE_PALETTE,
1, 1, 0,
FALSE, TRUE, FALSE);
gimp_view_set_expand (GIMP_VIEW (editor->view), TRUE);
gtk_container_add (GTK_CONTAINER (frame), editor->view);
gtk_widget_show (editor->view);
g_signal_connect (editor->view, "expose-event",
G_CALLBACK (gimp_colormap_preview_expose),
editor);
g_signal_connect (editor->view, "entry-clicked",
G_CALLBACK (gimp_colormap_editor_entry_clicked),
editor);
g_signal_connect (editor->view, "entry-selected",
G_CALLBACK (gimp_colormap_editor_entry_selected),
editor);
g_signal_connect (editor->view, "entry-activated",
G_CALLBACK (gimp_colormap_editor_entry_activated),
editor);
g_signal_connect (editor->view, "entry-context",
G_CALLBACK (gimp_colormap_editor_entry_context),
editor);
g_signal_connect (editor->view, "color-dropped",
G_CALLBACK (gimp_colormap_editor_color_dropped),
editor);
/* Some helpful hints */
table = gtk_table_new (2, 2, FALSE);
gtk_table_set_col_spacing (GTK_TABLE (table), 0, 4);
gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2);
gtk_box_pack_end (GTK_BOX (editor), table, FALSE, FALSE, 0);
gtk_widget_show (table);
editor->index_spinbutton = gimp_spin_button_new (&adj,
0, 0, 0, 1, 10, 0, 1.0, 0);
editor->index_adjustment = GTK_ADJUSTMENT (adj);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Color index:"), 0.0, 0.5,
editor->index_spinbutton, 1, TRUE);
g_signal_connect (editor->index_adjustment, "value-changed",
G_CALLBACK (gimp_colormap_adjustment_changed),
editor);
editor->color_entry = gimp_color_hex_entry_new ();
gtk_entry_set_width_chars (GTK_ENTRY (editor->color_entry), 12);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("HTML notation:"), 0.0, 0.5,
editor->color_entry, 1, TRUE);
g_signal_connect (editor->color_entry, "color-changed",
G_CALLBACK (gimp_colormap_hex_entry_changed),
editor);
}
static void
gimp_colormap_editor_constructed (GObject *object)
{
GimpColormapEditor *editor = GIMP_COLORMAP_EDITOR (object);
if (G_OBJECT_CLASS (parent_class)->constructed)
G_OBJECT_CLASS (parent_class)->constructed (object);
gimp_editor_add_action_button (GIMP_EDITOR (editor), "colormap",
"colormap-edit-color",
NULL);
gimp_editor_add_action_button (GIMP_EDITOR (editor), "colormap",
"colormap-add-color-from-fg",
"colormap-add-color-from-bg",
GDK_CONTROL_MASK,
NULL);
}
static void
gimp_colormap_editor_dispose (GObject *object)
{
GimpColormapEditor *editor = GIMP_COLORMAP_EDITOR (object);
if (editor->color_dialog)
{
gtk_widget_destroy (editor->color_dialog);
editor->color_dialog = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_colormap_editor_finalize (GObject *object)
{
GimpColormapEditor *editor = GIMP_COLORMAP_EDITOR (object);
if (editor->layout)
{
g_object_unref (editor->layout);
editor->layout = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_colormap_editor_unmap (GtkWidget *widget)
{
GimpColormapEditor *editor = GIMP_COLORMAP_EDITOR (widget);
if (editor->color_dialog)
gtk_widget_hide (editor->color_dialog);
GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}
static void
gimp_colormap_editor_set_image (GimpImageEditor *image_editor,
GimpImage *image)
{
GimpColormapEditor *editor = GIMP_COLORMAP_EDITOR (image_editor);
if (image_editor->image)
{
g_signal_handlers_disconnect_by_func (image_editor->image,
gimp_colormap_image_mode_changed,
editor);
g_signal_handlers_disconnect_by_func (image_editor->image,
gimp_colormap_image_colormap_changed,
editor);
if (editor->color_dialog)
gtk_widget_hide (editor->color_dialog);
if (! HAVE_COLORMAP (image))
{
gtk_adjustment_set_upper (editor->index_adjustment, 0);
if (gtk_widget_get_mapped (GTK_WIDGET (editor)))
gimp_view_set_viewable (GIMP_VIEW (editor->view), NULL);
}
}
GIMP_IMAGE_EDITOR_CLASS (parent_class)->set_image (image_editor, image);
editor->col_index = 0;
if (image)
{
g_signal_connect (image, "mode-changed",
G_CALLBACK (gimp_colormap_image_mode_changed),
editor);
g_signal_connect (image, "colormap-changed",
G_CALLBACK (gimp_colormap_image_colormap_changed),
editor);
if (HAVE_COLORMAP (image))
{
gimp_view_set_viewable (GIMP_VIEW (editor->view),
GIMP_VIEWABLE (gimp_image_get_colormap_palette (image)));
gtk_adjustment_set_upper (editor->index_adjustment,
gimp_image_get_colormap_size (image) - 1);
}
}
gimp_colormap_editor_update_entries (editor);
}
static void
gimp_colormap_editor_set_context (GimpDocked *docked,
GimpContext *context)
{
GimpColormapEditor *editor = GIMP_COLORMAP_EDITOR (docked);
parent_docked_iface->set_context (docked, context);
gimp_view_renderer_set_context (GIMP_VIEW (editor->view)->renderer,
context);
}
/* public functions */
GtkWidget *
gimp_colormap_editor_new (GimpMenuFactory *menu_factory)
{
g_return_val_if_fail (GIMP_IS_MENU_FACTORY (menu_factory), NULL);
return g_object_new (GIMP_TYPE_COLORMAP_EDITOR,
"menu-factory", menu_factory,
"menu-identifier", "<Colormap>",
"ui-path", "/colormap-popup",
NULL);
}
gint
gimp_colormap_editor_get_index (GimpColormapEditor *editor,
const GimpRGB *search)
{
GimpImage *image;
gint index;
g_return_val_if_fail (GIMP_IS_COLORMAP_EDITOR (editor), 01);
image = GIMP_IMAGE_EDITOR (editor)->image;
if (! HAVE_COLORMAP (image))
return -1;
index = editor->col_index;
if (search)
{
GimpRGB temp;
gimp_image_get_colormap_entry (image, index, &temp);
if (gimp_rgb_distance (&temp, search) > EPSILON)
{
gint n_colors = gimp_image_get_colormap_size (image);
gint i;
for (i = 0; i < n_colors; i++)
{
gimp_image_get_colormap_entry (image, i, &temp);
if (gimp_rgb_distance (&temp, search) < EPSILON)
{
index = i;
break;
}
}
}
}
return index;
}
gboolean
gimp_colormap_editor_set_index (GimpColormapEditor *editor,
gint index,
GimpRGB *color)
{
GimpImage *image;
gint size;
g_return_val_if_fail (GIMP_IS_COLORMAP_EDITOR (editor), FALSE);
image = GIMP_IMAGE_EDITOR (editor)->image;
if (! HAVE_COLORMAP (image))
return FALSE;
size = gimp_image_get_colormap_size (image);
if (size < 1)
return FALSE;
index = CLAMP (index, 0, size - 1);
if (index != editor->col_index)
{
GimpPalette *palette = gimp_image_get_colormap_palette (image);
editor->col_index = index;
gimp_palette_view_select_entry (GIMP_PALETTE_VIEW (editor->view),
gimp_palette_get_entry (palette, index));
gimp_colormap_editor_update_entries (editor);
}
if (color)
gimp_image_get_colormap_entry (GIMP_IMAGE_EDITOR (editor)->image,
index, color);
return TRUE;
}
gint
gimp_colormap_editor_max_index (GimpColormapEditor *editor)
{
GimpImage *image;
g_return_val_if_fail (GIMP_IS_COLORMAP_EDITOR (editor), -1);
image = GIMP_IMAGE_EDITOR (editor)->image;
if (! HAVE_COLORMAP (image))
return -1;
return MAX (0, gimp_image_get_colormap_size (image) - 1);
}
/* private functions */
static PangoLayout *
gimp_colormap_editor_create_layout (GtkWidget *widget)
{
PangoLayout *layout;
PangoAttrList *attrs;
PangoAttribute *attr;
layout = gtk_widget_create_pango_layout (widget,
_("Only indexed images have "
"a colormap."));
pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
attrs = pango_attr_list_new ();
attr = pango_attr_style_new (PANGO_STYLE_ITALIC);
attr->start_index = 0;
attr->end_index = -1;
pango_attr_list_insert (attrs, attr);
pango_layout_set_attributes (layout, attrs);
pango_attr_list_unref (attrs);
return layout;
}
static gboolean
gimp_colormap_preview_expose (GtkWidget *widget,
GdkEventExpose *event,
GimpColormapEditor *editor)
{
GimpImageEditor *image_editor = GIMP_IMAGE_EDITOR (editor);
GtkStyle *style;
cairo_t *cr;
GtkAllocation allocation;
gint width, height;
gint y;
if (image_editor->image == NULL ||
gimp_image_base_type (image_editor->image) == GIMP_INDEXED)
return FALSE;
cr = gdk_cairo_create (event->window);
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
style = gtk_widget_get_style (widget);
gdk_cairo_set_source_color (cr, &style->fg[gtk_widget_get_state (widget)]);
gtk_widget_get_allocation (widget, &allocation);
if (! gtk_widget_get_has_window (widget))
cairo_translate (cr, allocation.x, allocation.y);
if (! editor->layout)
editor->layout = gimp_colormap_editor_create_layout (editor->view);
pango_layout_set_width (editor->layout,
PANGO_SCALE * (allocation.width - 2 * BORDER));
pango_layout_get_pixel_size (editor->layout, &width, &height);
y = (allocation.height - height) / 2;
cairo_move_to (cr, BORDER, MAX (y, 0));
pango_cairo_show_layout (cr, editor->layout);
cairo_destroy (cr);
return TRUE;
}
static void
gimp_colormap_editor_update_entries (GimpColormapEditor *editor)
{
GimpImage *image = GIMP_IMAGE_EDITOR (editor)->image;
if (! HAVE_COLORMAP (image) ||
! gimp_image_get_colormap_size (image))
{
gtk_widget_set_sensitive (editor->index_spinbutton, FALSE);
gtk_widget_set_sensitive (editor->color_entry, FALSE);
gtk_adjustment_set_value (editor->index_adjustment, 0);
gtk_entry_set_text (GTK_ENTRY (editor->color_entry), "");
}
else
{
const guchar *colormap = gimp_image_get_colormap (image);
const guchar *col;
gchar *string;
gtk_adjustment_set_value (editor->index_adjustment, editor->col_index);
col = colormap + editor->col_index * 3;
string = g_strdup_printf ("%02x%02x%02x", col[0], col[1], col[2]);
gtk_entry_set_text (GTK_ENTRY (editor->color_entry), string);
g_free (string);
gtk_widget_set_sensitive (editor->index_spinbutton, TRUE);
gtk_widget_set_sensitive (editor->color_entry, TRUE);
}
}
static void
gimp_colormap_editor_entry_clicked (GimpPaletteView *view,
GimpPaletteEntry *entry,
GdkModifierType state,
GimpColormapEditor *editor)
{
GimpImageEditor *image_editor = GIMP_IMAGE_EDITOR (editor);
gimp_colormap_editor_set_index (editor, entry->position, NULL);
if (state & GDK_CONTROL_MASK)
gimp_context_set_background (image_editor->context, &entry->color);
else
gimp_context_set_foreground (image_editor->context, &entry->color);
}
static void
gimp_colormap_editor_entry_selected (GimpPaletteView *view,
GimpPaletteEntry *entry,
GimpColormapEditor *editor)
{
gint index = entry ? entry->position : 0;
gimp_colormap_editor_set_index (editor, index, NULL);
}
static void
gimp_colormap_editor_entry_activated (GimpPaletteView *view,
GimpPaletteEntry *entry,
GimpColormapEditor *editor)
{
gimp_colormap_editor_set_index (editor, entry->position, NULL);
gimp_ui_manager_activate_action (GIMP_EDITOR (editor)->ui_manager,
"colormap",
"colormap-edit-color");
}
static void
gimp_colormap_editor_entry_context (GimpPaletteView *view,
GimpPaletteEntry *entry,
GimpColormapEditor *editor)
{
gimp_colormap_editor_set_index (editor, entry->position, NULL);
gimp_editor_popup_menu (GIMP_EDITOR (editor), NULL, NULL);
}
static void
gimp_colormap_editor_color_dropped (GimpPaletteView *view,
GimpPaletteEntry *entry,
const GimpRGB *color,
GimpColormapEditor *editor)
{
}
static void
gimp_colormap_adjustment_changed (GtkAdjustment *adjustment,
GimpColormapEditor *editor)
{
GimpImage *image = GIMP_IMAGE_EDITOR (editor)->image;
if (HAVE_COLORMAP (image))
{
gint index = ROUND (gtk_adjustment_get_value (adjustment));
gimp_colormap_editor_set_index (editor, index, NULL);
gimp_colormap_editor_update_entries (editor);
}
}
static void
gimp_colormap_hex_entry_changed (GimpColorHexEntry *entry,
GimpColormapEditor *editor)
{
GimpImage *image = GIMP_IMAGE_EDITOR (editor)->image;
if (image)
{
GimpRGB color;
gimp_color_hex_entry_get_color (entry, &color);
gimp_image_set_colormap_entry (image, editor->col_index, &color, TRUE);
gimp_image_flush (image);
}
}
static void
gimp_colormap_image_mode_changed (GimpImage *image,
GimpColormapEditor *editor)
{
if (editor->color_dialog)
gtk_widget_hide (editor->color_dialog);
gimp_colormap_image_colormap_changed (image, -1, editor);
}
static void
gimp_colormap_image_colormap_changed (GimpImage *image,
gint ncol,
GimpColormapEditor *editor)
{
if (HAVE_COLORMAP (image))
{
gimp_view_set_viewable (GIMP_VIEW (editor->view),
GIMP_VIEWABLE (gimp_image_get_colormap_palette (image)));
gtk_adjustment_set_upper (editor->index_adjustment,
gimp_image_get_colormap_size (image) - 1);
}
else
{
gimp_view_set_viewable (GIMP_VIEW (editor->view), NULL);
}
if (ncol == editor->col_index || ncol == -1)
gimp_colormap_editor_update_entries (editor);
}
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