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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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "display-types.h"
#include "config/gimpcoreconfig.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpimage.h"
#include "core/gimplayer.h"
#include "widgets/gimpview.h"
#include "widgets/gimpviewrenderer.h"
#include "gimpdisplay.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-layer-select.h"
#include "gimp-intl.h"
typedef struct
{
GtkWidget *window;
GtkWidget *view;
GtkWidget *label;
GimpImage *image;
GList *orig_layers;
} LayerSelect;
/* local function prototypes */
static LayerSelect * layer_select_new (GimpDisplayShell *shell,
GimpImage *image,
GList *layers,
gint view_size);
static void layer_select_destroy (LayerSelect *layer_select,
GdkEvent *event);
static void layer_select_advance (LayerSelect *layer_select,
gint move);
static gboolean layer_select_events (GtkWidget *widget,
GdkEvent *event,
LayerSelect *layer_select);
/* public functions */
void
gimp_display_shell_layer_select_init (GimpDisplayShell *shell,
GdkEvent *event,
gint move)
{
LayerSelect *layer_select;
GimpImage *image;
GList *layers;
GdkGrabStatus status;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (event != NULL);
image = gimp_display_get_image (shell->display);
layers = gimp_image_get_selected_layers (image);
if (! layers)
return;
layer_select = layer_select_new (shell, image, layers,
image->gimp->config->layer_preview_size);
layer_select_advance (layer_select, move);
gtk_window_set_screen (GTK_WINDOW (layer_select->window),
gtk_widget_get_screen (GTK_WIDGET (shell)));
gtk_widget_show (layer_select->window);
status = gdk_seat_grab (gdk_event_get_seat (event),
gtk_widget_get_window (layer_select->window),
GDK_SEAT_CAPABILITY_KEYBOARD,
FALSE, NULL, event, NULL, NULL);
if (status != GDK_GRAB_SUCCESS)
{
g_printerr ("gdk_keyboard_grab failed with status %d\n", status);
layer_select_destroy (layer_select, event);
}
}
/* private functions */
static LayerSelect *
layer_select_new (GimpDisplayShell *shell,
GimpImage *image,
GList *layers,
gint view_size)
{
LayerSelect *layer_select;
GtkWidget *frame1;
GtkWidget *frame2;
GtkWidget *hbox;
layer_select = g_slice_new0 (LayerSelect);
layer_select->image = image;
layer_select->orig_layers = g_list_copy (layers);
layer_select->window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_role (GTK_WINDOW (layer_select->window), "gimp-layer-select");
gtk_window_set_title (GTK_WINDOW (layer_select->window), _("Layer Select"));
gtk_window_set_position (GTK_WINDOW (layer_select->window), GTK_WIN_POS_MOUSE);
gtk_widget_set_events (layer_select->window,
GDK_KEY_PRESS_MASK |
GDK_KEY_RELEASE_MASK |
GDK_BUTTON_PRESS_MASK);
g_signal_connect (layer_select->window, "event",
G_CALLBACK (layer_select_events),
layer_select);
frame1 = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame1), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (layer_select->window), frame1);
gtk_widget_show (frame1);
frame2 = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame2), GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (frame1), frame2);
gtk_widget_show (frame2);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 6);
gtk_container_add (GTK_CONTAINER (frame2), hbox);
gtk_widget_show (hbox);
/* the view */
layer_select->view =
gimp_view_new_by_types (gimp_get_user_context (image->gimp),
GIMP_TYPE_VIEW,
GIMP_TYPE_LAYER,
view_size, 1, FALSE);
gimp_view_renderer_set_color_config (GIMP_VIEW (layer_select->view)->renderer,
gimp_display_shell_get_color_config (shell));
gimp_view_set_viewable (GIMP_VIEW (layer_select->view),
g_list_length (layers) == 1 ? GIMP_VIEWABLE (layers->data) : NULL);
gtk_box_pack_start (GTK_BOX (hbox), layer_select->view, FALSE, FALSE, 0);
gtk_widget_show (layer_select->view);
/* the layer name label */
layer_select->label = gtk_label_new (NULL);
gtk_box_pack_start (GTK_BOX (hbox), layer_select->label, FALSE, FALSE, 0);
gtk_widget_show (layer_select->label);
return layer_select;
}
static void
layer_select_destroy (LayerSelect *layer_select,
GdkEvent *event)
{
gdk_seat_ungrab (gdk_event_get_seat (event));
gtk_widget_destroy (layer_select->window);
/* Flush only if selection actually changed. */
if (g_list_length (layer_select->orig_layers) !=
g_list_length (gimp_image_get_selected_layers (layer_select->image)))
{
gimp_image_flush (layer_select->image);
}
else
{
GList *layers;
GList *iter;
layers = gimp_image_get_selected_layers (layer_select->image);
for (iter = layers; iter; iter = iter->next)
if (! g_list_find (layer_select->orig_layers, iter->data))
{
gimp_image_flush (layer_select->image);
break;
}
}
g_list_free (layer_select->orig_layers);
g_slice_free (LayerSelect, layer_select);
}
static void
layer_select_advance (LayerSelect *layer_select,
gint move)
{
GList *next_layers = NULL;
GList *selected_layers;
GList *iter;
GList *layers;
gint n_layers;
gint index;
if (move == 0)
return;
/* If there is a floating selection, allow no advancement */
if (gimp_image_get_floating_selection (layer_select->image))
return;
selected_layers = gimp_image_get_selected_layers (layer_select->image);
if (! selected_layers)
return;
layers = gimp_image_get_layer_list (layer_select->image);
n_layers = g_list_length (layers);
for (iter = selected_layers; iter; iter = iter->next)
{
GimpLayer *next_layer;
index = g_list_index (layers, iter->data);
index += move;
if (index < 0)
index = n_layers - 1;
else if (index >= n_layers)
index = 0;
next_layer = g_list_nth_data (layers, index);
if (next_layer && ! g_list_find (next_layers, next_layer))
next_layers = g_list_prepend (next_layers, next_layer);
}
g_list_free (layers);
gimp_image_set_selected_layers (layer_select->image, next_layers);
selected_layers = gimp_image_get_selected_layers (layer_select->image);
if (selected_layers)
{
if (g_list_length (selected_layers) == 1)
{
gimp_view_set_viewable (GIMP_VIEW (layer_select->view),
GIMP_VIEWABLE (selected_layers->data));
gtk_label_set_text (GTK_LABEL (layer_select->label),
gimp_object_get_name (selected_layers->data));
}
else
{
gimp_view_set_viewable (GIMP_VIEW (layer_select->view), NULL);
gtk_label_set_text (GTK_LABEL (layer_select->label),
move > 0 ? _("Layer Selection Moved Down") :
_("Layer Selection Moved Up"));
}
}
}
static gboolean
layer_select_events (GtkWidget *widget,
GdkEvent *event,
LayerSelect *layer_select)
{
GdkEventKey *kevent;
switch (event->type)
{
case GDK_BUTTON_PRESS:
layer_select_destroy (layer_select, event);
break;
case GDK_KEY_PRESS:
kevent = (GdkEventKey *) event;
switch (kevent->keyval)
{
case GDK_KEY_Tab:
layer_select_advance (layer_select, 1);
break;
case GDK_KEY_ISO_Left_Tab:
layer_select_advance (layer_select, -1);
break;
}
return TRUE;
break;
case GDK_KEY_RELEASE:
kevent = (GdkEventKey *) event;
switch (kevent->keyval)
{
case GDK_KEY_Alt_L: case GDK_KEY_Alt_R:
kevent->state &= ~GDK_MOD1_MASK;
break;
case GDK_KEY_Control_L: case GDK_KEY_Control_R:
kevent->state &= ~GDK_CONTROL_MASK;
break;
case GDK_KEY_Shift_L: case GDK_KEY_Shift_R:
kevent->state &= ~GDK_SHIFT_MASK;
break;
}
if (! (kevent->state & GDK_CONTROL_MASK))
layer_select_destroy (layer_select, event);
return TRUE;
break;
default:
break;
}
return FALSE;
}
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