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gimp/app/widgets/gimpcontainergridview.c

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/* The GIMP -- an 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdio.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "apptypes.h"
#include "appenv.h"
#include "colormaps.h"
#include "gimpcontainer.h"
#include "gimpcontainergridview.h"
#include "gimpcontext.h"
#include "gimppreview.h"
#include "gimpconstrainedhwrapbox.h"
static void gimp_container_grid_view_class_init (GimpContainerGridViewClass *klass);
static void gimp_container_grid_view_init (GimpContainerGridView *panel);
static void gimp_container_grid_view_destroy (GtkObject *object);
static gpointer gimp_container_grid_view_insert_item (GimpContainerView *view,
GimpViewable *viewable,
gint index);
static void gimp_container_grid_view_remove_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data);
static void gimp_container_grid_view_reorder_item (GimpContainerView *view,
GimpViewable *viewable,
gint new_index,
gpointer insert_data);
static void gimp_container_grid_view_select_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data);
static void gimp_container_grid_view_clear_items (GimpContainerView *view);
static void gimp_container_grid_view_set_preview_size (GimpContainerView *view);
static void gimp_container_grid_view_item_selected (GtkWidget *widget,
gpointer data);
static void gimp_container_grid_view_item_activated (GtkWidget *widget,
gpointer data);
static void gimp_container_grid_view_highlight_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data);
static GimpContainerViewClass *parent_class = NULL;
static GimpRGB white_color;
static GimpRGB black_color;
GtkType
gimp_container_grid_view_get_type (void)
{
static guint grid_view_type = 0;
if (! grid_view_type)
{
GtkTypeInfo grid_view_info =
{
"GimpContainerGridView",
sizeof (GimpContainerGridView),
sizeof (GimpContainerGridViewClass),
(GtkClassInitFunc) gimp_container_grid_view_class_init,
(GtkObjectInitFunc) gimp_container_grid_view_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
grid_view_type = gtk_type_unique (GIMP_TYPE_CONTAINER_VIEW,
&grid_view_info);
}
return grid_view_type;
}
static void
gimp_container_grid_view_class_init (GimpContainerGridViewClass *klass)
{
GtkObjectClass *object_class;
GimpContainerViewClass *container_view_class;
object_class = (GtkObjectClass *) klass;
container_view_class = (GimpContainerViewClass *) klass;
parent_class = gtk_type_class (GIMP_TYPE_CONTAINER_VIEW);
object_class->destroy = gimp_container_grid_view_destroy;
container_view_class->insert_item = gimp_container_grid_view_insert_item;
container_view_class->remove_item = gimp_container_grid_view_remove_item;
container_view_class->reorder_item = gimp_container_grid_view_reorder_item;
container_view_class->select_item = gimp_container_grid_view_select_item;
container_view_class->clear_items = gimp_container_grid_view_clear_items;
container_view_class->set_preview_size = gimp_container_grid_view_set_preview_size;
klass->white_style = gtk_style_copy (gtk_widget_get_default_style ());
klass->white_style->bg[GTK_STATE_NORMAL].red = 0xffff;
klass->white_style->bg[GTK_STATE_NORMAL].green = 0xffff;
klass->white_style->bg[GTK_STATE_NORMAL].blue = 0xffff;
klass->white_style->bg[GTK_STATE_NORMAL].pixel = g_white_pixel;
gimp_rgba_set (&white_color, 1.0, 1.0, 1.0, 1.0);
gimp_rgba_set (&black_color, 0.0, 0.0, 0.0, 1.0);
}
static void
gimp_container_grid_view_init (GimpContainerGridView *grid_view)
{
grid_view->scrolled_win = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (grid_view->scrolled_win),
GTK_POLICY_NEVER,
GTK_POLICY_ALWAYS);
gtk_box_pack_start (GTK_BOX (grid_view), grid_view->scrolled_win,
TRUE, TRUE, 0);
grid_view->wrap_box = gimp_constrained_hwrap_box_new (FALSE);
gtk_wrap_box_set_aspect_ratio (GTK_WRAP_BOX (grid_view->wrap_box),
1.0 / 256.0);
gtk_scrolled_window_add_with_viewport
(GTK_SCROLLED_WINDOW (grid_view->scrolled_win),
grid_view->wrap_box);
gtk_widget_set_style
(grid_view->wrap_box->parent,
GIMP_CONTAINER_GRID_VIEW_CLASS (GTK_OBJECT (grid_view)->klass)->white_style);
gtk_container_set_focus_vadjustment
(GTK_CONTAINER (grid_view->wrap_box->parent),
gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW
(grid_view->scrolled_win)));
GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW
(grid_view->scrolled_win)->vscrollbar,
GTK_CAN_FOCUS);
GTK_WIDGET_SET_FLAGS (grid_view->wrap_box->parent, GTK_CAN_FOCUS);
gtk_widget_show (grid_view->wrap_box);
gtk_widget_show (grid_view->scrolled_win);
}
static void
gimp_container_grid_view_destroy (GtkObject *object)
{
GimpContainerGridView *grid_view;
grid_view = GIMP_CONTAINER_GRID_VIEW (object);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
GtkWidget *
gimp_container_grid_view_new (GimpContainer *container,
GimpContext *context,
gint preview_size,
gint min_items_x,
gint min_items_y)
{
GimpContainerGridView *grid_view;
GimpContainerView *view;
gint window_border;
g_return_val_if_fail (! container || GIMP_IS_CONTAINER (container), NULL);
g_return_val_if_fail (! context || GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (preview_size > 0 && preview_size <= 64, NULL);
g_return_val_if_fail (min_items_x > 0 && min_items_x <= 64, NULL);
g_return_val_if_fail (min_items_y > 0 && min_items_y <= 64, NULL);
grid_view = gtk_type_new (GIMP_TYPE_CONTAINER_GRID_VIEW);
view = GIMP_CONTAINER_VIEW (grid_view);
view->preview_size = preview_size;
window_border =
GTK_SCROLLED_WINDOW (grid_view->scrolled_win)->vscrollbar->requisition.width +
GTK_SCROLLED_WINDOW_CLASS (GTK_OBJECT (grid_view->scrolled_win)->klass)->scrollbar_spacing +
grid_view->scrolled_win->style->klass->xthickness * 4;
gtk_widget_set_usize (grid_view->scrolled_win,
(preview_size + 2) * min_items_x + window_border,
(preview_size + 2) * min_items_y + window_border);
if (container)
gimp_container_view_set_container (view, container);
gimp_container_view_set_context (view, context);
return GTK_WIDGET (grid_view);
}
static gpointer
gimp_container_grid_view_insert_item (GimpContainerView *view,
GimpViewable *viewable,
gint index)
{
GimpContainerGridView *grid_view;
GtkWidget *preview;
grid_view = GIMP_CONTAINER_GRID_VIEW (view);
preview = gimp_preview_new_full (viewable,
view->preview_size,
view->preview_size,
1,
FALSE, TRUE, TRUE);
GIMP_PREVIEW (preview)->border_color = white_color;
gtk_wrap_box_pack (GTK_WRAP_BOX (grid_view->wrap_box), preview,
FALSE, FALSE, FALSE, FALSE);
if (index != -1)
gtk_wrap_box_reorder_child (GTK_WRAP_BOX (grid_view->wrap_box),
preview, index);
gtk_widget_show (preview);
gtk_signal_connect (GTK_OBJECT (preview), "clicked",
GTK_SIGNAL_FUNC (gimp_container_grid_view_item_selected),
view);
gtk_signal_connect (GTK_OBJECT (preview), "double_clicked",
GTK_SIGNAL_FUNC (gimp_container_grid_view_item_activated),
view);
return (gpointer) preview;
}
static void
gimp_container_grid_view_remove_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data)
{
GimpContainerGridView *grid_view;
GtkWidget *preview;
grid_view = GIMP_CONTAINER_GRID_VIEW (view);
preview = GTK_WIDGET (insert_data);
if (preview)
{
if (gtk_object_get_data (GTK_OBJECT (view),
"last_selected_item") == preview)
{
gtk_object_set_data (GTK_OBJECT (view), "last_selected_item", NULL);
}
gtk_container_remove (GTK_CONTAINER (grid_view->wrap_box), preview);
}
}
static void
gimp_container_grid_view_reorder_item (GimpContainerView *view,
GimpViewable *viewable,
gint new_index,
gpointer insert_data)
{
GimpContainerGridView *grid_view;
GtkWidget *preview;
grid_view = GIMP_CONTAINER_GRID_VIEW (view);
preview = GTK_WIDGET (insert_data);
gtk_wrap_box_reorder_child (GTK_WRAP_BOX (grid_view->wrap_box),
preview, new_index);
}
static void
gimp_container_grid_view_select_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data)
{
gimp_container_grid_view_highlight_item (view, viewable, insert_data);
}
static void
gimp_container_grid_view_clear_items (GimpContainerView *view)
{
GimpContainerGridView *grid_view;
grid_view = GIMP_CONTAINER_GRID_VIEW (view);
gtk_object_set_data (GTK_OBJECT (view), "last_selected_item", NULL);
while (GTK_WRAP_BOX (grid_view->wrap_box)->children)
gtk_container_remove (GTK_CONTAINER (grid_view->wrap_box),
GTK_WRAP_BOX (grid_view->wrap_box)->children->widget);
if (GIMP_CONTAINER_VIEW_CLASS (parent_class)->clear_items)
GIMP_CONTAINER_VIEW_CLASS (parent_class)->clear_items (view);
}
static void
gimp_container_grid_view_set_preview_size (GimpContainerView *view)
{
GimpContainerGridView *grid_view;
GtkWrapBoxChild *child;
grid_view = GIMP_CONTAINER_GRID_VIEW (view);
for (child = GTK_WRAP_BOX (grid_view->wrap_box)->children;
child;
child = child->next)
{
GimpPreview *preview;
preview = GIMP_PREVIEW (child->widget);
gimp_preview_set_size (preview, view->preview_size, preview->border_width);
}
gtk_widget_queue_resize (grid_view->wrap_box);
}
static void
gimp_container_grid_view_item_selected (GtkWidget *widget,
gpointer data)
{
gimp_container_view_item_selected (GIMP_CONTAINER_VIEW (data),
GIMP_PREVIEW (widget)->viewable);
}
static void
gimp_container_grid_view_item_activated (GtkWidget *widget,
gpointer data)
{
gimp_container_view_item_activated (GIMP_CONTAINER_VIEW (data),
GIMP_PREVIEW (widget)->viewable);
}
static void
gimp_container_grid_view_highlight_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data)
{
GimpContainerGridView *grid_view;
GimpPreview *preview;
grid_view = GIMP_CONTAINER_GRID_VIEW (view);
preview = gtk_object_get_data (GTK_OBJECT (view), "last_selected_item");
if (preview)
gimp_preview_set_border_color (preview, &white_color);
if (insert_data)
preview = GIMP_PREVIEW (insert_data);
else
preview = NULL;
if (preview)
{
GtkAdjustment *adj;
gint item_height;
gint index;
gint row;
adj = gtk_scrolled_window_get_vadjustment
(GTK_SCROLLED_WINDOW (grid_view->scrolled_win));
item_height = GTK_WIDGET (preview)->allocation.height;
index = gimp_container_get_child_index (view->container,
GIMP_OBJECT (viewable));
row = index / GIMP_CONSTRAINED_HWRAP_BOX (grid_view->wrap_box)->columns;
if (row * item_height < adj->value)
{
gtk_adjustment_set_value (adj, row * item_height);
}
else if ((row + 1) * item_height > adj->value + adj->page_size)
{
gtk_adjustment_set_value (adj,
(row + 1) * item_height - adj->page_size);
}
gimp_preview_set_border_color (preview, &black_color);
}
gtk_object_set_data (GTK_OBJECT (view), "last_selected_item", preview);
}
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