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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
*
* gimpcontainergridview.c
* Copyright (C) 2001 Michael Natterer <mitch@gimp.org>
*
* 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 <gdk/gdkkeysyms.h>
#include "libgimpcolor/gimpcolor.h"
#include "widgets-types.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpmarshal.h"
#include "core/gimpviewable.h"
#include "gimpcontainergridview.h"
#include "gimppreview.h"
#include "gimppreviewrenderer.h"
#include "gtkhwrapbox.h"
#include "gimp-intl.h"
enum
{
MOVE_CURSOR,
LAST_SIGNAL
};
static void gimp_container_grid_view_class_init (GimpContainerGridViewClass *klass);
static void gimp_container_grid_view_init (GimpContainerGridView *view);
static gboolean gimp_container_grid_view_move_cursor (GimpContainerGridView *view,
GtkMovementStep step,
gint count);
static gboolean gimp_container_grid_view_focus (GtkWidget *widget,
GtkDirectionType direction);
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,
GdkModifierType state,
gpointer data);
static void gimp_container_grid_view_item_activated (GtkWidget *widget,
gpointer data);
static void gimp_container_grid_view_item_context (GtkWidget *widget,
gpointer data);
static void gimp_container_grid_view_highlight_item (GimpContainerView *view,
GimpViewable *viewable,
gpointer insert_data);
static void gimp_container_grid_view_vieport_resized (GtkWidget *widget,
GtkAllocation *allocation,
GimpContainerGridView *view);
static void gimp_container_grid_view_vieport_realize (GtkWidget *widget,
GimpContainerGridView *view);
static GimpContainerViewClass *parent_class = NULL;
static guint grid_view_signals[LAST_SIGNAL] = { 0 };
static GimpRGB white_color;
static GimpRGB black_color;
GType
gimp_container_grid_view_get_type (void)
{
static GType view_type = 0;
if (! view_type)
{
static const GTypeInfo view_info =
{
sizeof (GimpContainerGridViewClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_container_grid_view_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpContainerGridView),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_container_grid_view_init,
};
view_type = g_type_register_static (GIMP_TYPE_CONTAINER_VIEW,
"GimpContainerGridView",
&view_info, 0);
}
return view_type;
}
static void
gimp_container_grid_view_class_init (GimpContainerGridViewClass *klass)
{
GimpContainerViewClass *container_view_class;
GtkWidgetClass *widget_class;
GtkBindingSet *binding_set;
container_view_class = GIMP_CONTAINER_VIEW_CLASS (klass);
widget_class = GTK_WIDGET_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
binding_set = gtk_binding_set_by_class (klass);
widget_class->focus = gimp_container_grid_view_focus;
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->move_cursor = gimp_container_grid_view_move_cursor;
grid_view_signals[MOVE_CURSOR] =
g_signal_new ("move_cursor",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GimpContainerGridViewClass, move_cursor),
NULL, NULL,
gimp_marshal_BOOLEAN__ENUM_INT,
G_TYPE_BOOLEAN, 2,
GTK_TYPE_MOVEMENT_STEP,
G_TYPE_INT);
gtk_binding_entry_add_signal (binding_set, GDK_Home, 0,
"move_cursor", 2,
G_TYPE_ENUM, GTK_MOVEMENT_BUFFER_ENDS,
G_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set, GDK_End, 0,
"move_cursor", 2,
G_TYPE_ENUM, GTK_MOVEMENT_BUFFER_ENDS,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_Page_Up, 0,
"move_cursor", 2,
G_TYPE_ENUM, GTK_MOVEMENT_PAGES,
G_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set, GDK_Page_Down, 0,
"move_cursor", 2,
G_TYPE_ENUM, GTK_MOVEMENT_PAGES,
G_TYPE_INT, 1);
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)
{
GimpContainerView *view;
view = GIMP_CONTAINER_VIEW (grid_view);
grid_view->rows = 1;
grid_view->columns = 1;
grid_view->visible_rows = 0;
grid_view->selected_item = NULL;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (view->scrolled_win),
GTK_POLICY_NEVER, GTK_POLICY_ALWAYS);
grid_view->name_label = gtk_label_new (_("(None)"));
gtk_misc_set_alignment (GTK_MISC (grid_view->name_label), 0.0, 0.5);
gtk_misc_set_padding (GTK_MISC (grid_view->name_label),
grid_view->name_label->style->xthickness, 0);
gtk_box_pack_start (GTK_BOX (grid_view), grid_view->name_label,
FALSE, FALSE, 0);
gtk_box_reorder_child (GTK_BOX (grid_view), grid_view->name_label, 0);
gtk_widget_show (grid_view->name_label);
grid_view->wrap_box = gtk_hwrap_box_new (FALSE);
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (view->scrolled_win),
grid_view->wrap_box);
gtk_widget_show (grid_view->wrap_box);
g_signal_connect (grid_view->wrap_box->parent, "size_allocate",
G_CALLBACK (gimp_container_grid_view_vieport_resized),
grid_view);
g_signal_connect (grid_view->wrap_box->parent, "realize",
G_CALLBACK (gimp_container_grid_view_vieport_realize),
grid_view);
gtk_container_set_focus_vadjustment
(GTK_CONTAINER (grid_view->wrap_box->parent),
gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW
(view->scrolled_win)));
GTK_WIDGET_SET_FLAGS (grid_view, GTK_CAN_FOCUS);
}
GtkWidget *
gimp_container_grid_view_new (GimpContainer *container,
GimpContext *context,
gint preview_size,
gint preview_border_width,
gboolean reorderable)
{
GimpContainerGridView *grid_view;
g_return_val_if_fail (container == NULL || GIMP_IS_CONTAINER (container),
NULL);
g_return_val_if_fail (context == NULL || GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (preview_size > 0 &&
preview_size <= GIMP_VIEWABLE_MAX_PREVIEW_SIZE, NULL);
g_return_val_if_fail (preview_border_width >= 0 &&
preview_border_width <= GIMP_PREVIEW_MAX_BORDER_WIDTH,
NULL);
grid_view = g_object_new (GIMP_TYPE_CONTAINER_GRID_VIEW, NULL);
gimp_container_view_construct (GIMP_CONTAINER_VIEW (grid_view),
container, context,
preview_size, preview_border_width,
reorderable);
return GTK_WIDGET (grid_view);
}
static gboolean
gimp_container_grid_view_move_by (GimpContainerGridView *view,
gint x,
gint y)
{
GimpContainer *container;
GimpViewable *item;
gint index;
if (! view->selected_item)
return FALSE;
container = GIMP_CONTAINER_VIEW (view)->container;
item = view->selected_item->viewable;
index = gimp_container_get_child_index (container, GIMP_OBJECT (item));
index += x;
index = CLAMP (index, 0, container->num_children - 1);
index += y * view->columns;
while (index < 0)
index += view->columns;
while (index >= container->num_children)
index -= view->columns;
item = (GimpViewable *) gimp_container_get_child_by_index (container, index);
if (item)
gimp_container_view_item_selected (GIMP_CONTAINER_VIEW (view), item);
return TRUE;
}
static gboolean
gimp_container_grid_view_move_cursor (GimpContainerGridView *view,
GtkMovementStep step,
gint count)
{
GimpContainer *container;
GimpViewable *item;
if (!GTK_WIDGET_HAS_FOCUS (GTK_WIDGET (view)) || count == 0)
return FALSE;
switch (step)
{
case GTK_MOVEMENT_PAGES:
return gimp_container_grid_view_move_by (view,
0, count * view->visible_rows);
case GTK_MOVEMENT_BUFFER_ENDS:
container = GIMP_CONTAINER_VIEW (view)->container;
count = count < 0 ? 0 : container->num_children - 1;
item = (GimpViewable *) gimp_container_get_child_by_index (container,
count);
if (item)
gimp_container_view_item_selected (GIMP_CONTAINER_VIEW (view), item);
return TRUE;
default:
break;
}
return FALSE;
}
static gboolean
gimp_container_grid_view_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GimpContainerGridView *view;
if (GTK_WIDGET_CAN_FOCUS (widget) && !GTK_WIDGET_HAS_FOCUS (widget))
{
gtk_widget_grab_focus (GTK_WIDGET (widget));
return TRUE;
}
view = GIMP_CONTAINER_GRID_VIEW (widget);
switch (direction)
{
case GTK_DIR_UP:
return gimp_container_grid_view_move_by (view, 0, -1);
case GTK_DIR_DOWN:
return gimp_container_grid_view_move_by (view, 0, 1);
case GTK_DIR_LEFT:
return gimp_container_grid_view_move_by (view, -1, 0);
case GTK_DIR_RIGHT:
return gimp_container_grid_view_move_by (view, 1, 0);
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_TAB_BACKWARD:
break;
}
return FALSE;
}
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_renderer_set_border_color (GIMP_PREVIEW (preview)->renderer,
&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);
g_signal_connect (preview, "clicked",
G_CALLBACK (gimp_container_grid_view_item_selected),
view);
g_signal_connect (preview, "double_clicked",
G_CALLBACK (gimp_container_grid_view_item_activated),
view);
g_signal_connect (preview, "context",
G_CALLBACK (gimp_container_grid_view_item_context),
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 (preview == (GtkWidget *) grid_view->selected_item)
grid_view->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);
grid_view->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);
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 = GIMP_PREVIEW (child->widget);
gimp_preview_renderer_set_size (preview->renderer,
view->preview_size,
preview->renderer->border_width);
}
gtk_widget_queue_resize (grid_view->wrap_box);
}
static void
gimp_container_grid_view_item_selected (GtkWidget *widget,
GdkModifierType state,
gpointer data)
{
if (GTK_WIDGET_CAN_FOCUS (data) && !GTK_WIDGET_HAS_FOCUS (data))
gtk_widget_grab_focus (GTK_WIDGET (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_item_context (GtkWidget *widget,
gpointer data)
{
gimp_container_view_item_selected (GIMP_CONTAINER_VIEW (data),
GIMP_PREVIEW (widget)->viewable);
gimp_container_view_item_context (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 = NULL;
grid_view = GIMP_CONTAINER_GRID_VIEW (view);
if (insert_data)
preview = GIMP_PREVIEW (insert_data);
if (grid_view->selected_item && grid_view->selected_item != preview)
{
gimp_preview_renderer_set_border_color (grid_view->selected_item->renderer,
&white_color);
gimp_preview_renderer_update (grid_view->selected_item->renderer);
}
if (preview)
{
GtkRequisition preview_requisition;
GtkAdjustment *adj;
gint item_height;
gint index;
gint row;
gchar *name;
adj = gtk_scrolled_window_get_vadjustment
(GTK_SCROLLED_WINDOW (view->scrolled_win));
gtk_widget_size_request (GTK_WIDGET (preview), &preview_requisition);
item_height = preview_requisition.height;
index = gimp_container_get_child_index (view->container,
GIMP_OBJECT (viewable));
row = index / grid_view->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_renderer_set_border_color (preview->renderer, &black_color);
gimp_preview_renderer_update (preview->renderer);
name = gimp_viewable_get_description (preview->renderer->viewable, NULL);
gtk_label_set_text (GTK_LABEL (grid_view->name_label), name);
g_free (name);
}
else
{
gtk_label_set_text (GTK_LABEL (grid_view->name_label), _("(None)"));
}
grid_view->selected_item = preview;
}
static void
gimp_container_grid_view_vieport_resized (GtkWidget *widget,
GtkAllocation *allocation,
GimpContainerGridView *grid_view)
{
GimpContainerView *view;
view = GIMP_CONTAINER_VIEW (grid_view);
if (view->container)
{
GList *children;
gint n_children;
children = gtk_container_get_children (GTK_CONTAINER (grid_view->wrap_box));
n_children = g_list_length (children);
if (children)
{
GtkRequisition preview_requisition;
gint columns;
gint rows;
gtk_widget_size_request (GTK_WIDGET (children->data),
&preview_requisition);
g_list_free (children);
columns = MAX (1, allocation->width / preview_requisition.width);
rows = n_children / columns;
if (n_children % columns)
rows++;
if ((rows != grid_view->rows) || (columns != grid_view->columns))
{
grid_view->rows = rows;
grid_view->columns = columns;
gtk_widget_set_size_request (grid_view->wrap_box,
columns * preview_requisition.width,
rows * preview_requisition.height);
}
grid_view->visible_rows = (allocation->height /
preview_requisition.height);
}
if (grid_view->selected_item)
{
GimpPreview *preview;
preview = grid_view->selected_item;
gimp_container_grid_view_highlight_item (view,
preview->viewable,
preview);
}
}
}
#ifdef __GNUC__
#warning FIXME: remove realize callback once #110737 is fixed
#endif
static void
gimp_container_grid_view_vieport_realize (GtkWidget *widget,
GimpContainerGridView *grid_view)
{
GimpContainerView *view;
view = GIMP_CONTAINER_VIEW (grid_view);
if (view->container && grid_view->selected_item)
{
GimpPreview *preview;
preview = grid_view->selected_item;
gimp_container_grid_view_highlight_item (view,
preview->viewable,
preview);
}
}
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