342 lines
10 KiB
C
342 lines
10 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include <gdk/gdkkeysyms.h>
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#include "libpikawidgets/pikawidgets.h"
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#include "display-types.h"
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#include "config/pikacoreconfig.h"
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#include "core/pika.h"
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#include "core/pikacontainer.h"
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#include "core/pikaimage.h"
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#include "core/pikalayer.h"
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#include "widgets/pikaview.h"
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#include "widgets/pikaviewrenderer.h"
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#include "pikadisplay.h"
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#include "pikadisplayshell.h"
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#include "pikadisplayshell-layer-select.h"
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#include "pika-intl.h"
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typedef struct
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{
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GtkWidget *window;
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GtkWidget *view;
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GtkWidget *label;
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PikaImage *image;
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GList *orig_layers;
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} LayerSelect;
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/* local function prototypes */
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static LayerSelect * layer_select_new (PikaDisplayShell *shell,
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PikaImage *image,
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GList *layers,
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gint view_size);
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static void layer_select_destroy (LayerSelect *layer_select,
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GdkEvent *event);
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static void layer_select_advance (LayerSelect *layer_select,
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gint move);
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static gboolean layer_select_events (GtkWidget *widget,
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GdkEvent *event,
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LayerSelect *layer_select);
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/* public functions */
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void
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pika_display_shell_layer_select_init (PikaDisplayShell *shell,
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GdkEvent *event,
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gint move)
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{
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LayerSelect *layer_select;
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PikaImage *image;
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GList *layers;
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GdkGrabStatus status;
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g_return_if_fail (PIKA_IS_DISPLAY_SHELL (shell));
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g_return_if_fail (event != NULL);
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image = pika_display_get_image (shell->display);
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layers = pika_image_get_selected_layers (image);
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if (! layers)
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return;
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layer_select = layer_select_new (shell, image, layers,
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image->pika->config->layer_preview_size);
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layer_select_advance (layer_select, move);
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gtk_window_set_screen (GTK_WINDOW (layer_select->window),
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gtk_widget_get_screen (GTK_WIDGET (shell)));
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gtk_widget_show (layer_select->window);
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status = gdk_seat_grab (gdk_event_get_seat (event),
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gtk_widget_get_window (layer_select->window),
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GDK_SEAT_CAPABILITY_KEYBOARD,
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FALSE, NULL, event, NULL, NULL);
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if (status != GDK_GRAB_SUCCESS)
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{
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g_printerr ("gdk_keyboard_grab failed with status %d\n", status);
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layer_select_destroy (layer_select, event);
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}
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}
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/* private functions */
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static LayerSelect *
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layer_select_new (PikaDisplayShell *shell,
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PikaImage *image,
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GList *layers,
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gint view_size)
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{
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LayerSelect *layer_select;
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GtkWidget *frame1;
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GtkWidget *frame2;
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GtkWidget *hbox;
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layer_select = g_slice_new0 (LayerSelect);
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layer_select->image = image;
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layer_select->orig_layers = g_list_copy (layers);
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layer_select->window = gtk_window_new (GTK_WINDOW_POPUP);
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gtk_window_set_role (GTK_WINDOW (layer_select->window), "pika-layer-select");
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gtk_window_set_title (GTK_WINDOW (layer_select->window), _("Layer Select"));
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gtk_window_set_position (GTK_WINDOW (layer_select->window), GTK_WIN_POS_MOUSE);
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gtk_widget_set_events (layer_select->window,
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GDK_KEY_PRESS_MASK |
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GDK_KEY_RELEASE_MASK |
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GDK_BUTTON_PRESS_MASK);
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g_signal_connect (layer_select->window, "event",
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G_CALLBACK (layer_select_events),
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layer_select);
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frame1 = gtk_frame_new (NULL);
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gtk_frame_set_shadow_type (GTK_FRAME (frame1), GTK_SHADOW_OUT);
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gtk_container_add (GTK_CONTAINER (layer_select->window), frame1);
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gtk_widget_show (frame1);
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frame2 = gtk_frame_new (NULL);
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gtk_frame_set_shadow_type (GTK_FRAME (frame2), GTK_SHADOW_IN);
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gtk_container_add (GTK_CONTAINER (frame1), frame2);
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gtk_widget_show (frame2);
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
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gtk_container_set_border_width (GTK_CONTAINER (hbox), 6);
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gtk_container_add (GTK_CONTAINER (frame2), hbox);
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gtk_widget_show (hbox);
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/* the view */
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layer_select->view =
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pika_view_new_by_types (pika_get_user_context (image->pika),
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PIKA_TYPE_VIEW,
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PIKA_TYPE_LAYER,
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view_size, 1, FALSE);
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pika_view_renderer_set_color_config (PIKA_VIEW (layer_select->view)->renderer,
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pika_display_shell_get_color_config (shell));
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pika_view_set_viewable (PIKA_VIEW (layer_select->view),
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g_list_length (layers) == 1 ? PIKA_VIEWABLE (layers->data) : NULL);
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gtk_box_pack_start (GTK_BOX (hbox), layer_select->view, FALSE, FALSE, 0);
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gtk_widget_show (layer_select->view);
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/* the layer name label */
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layer_select->label = gtk_label_new (NULL);
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gtk_box_pack_start (GTK_BOX (hbox), layer_select->label, FALSE, FALSE, 0);
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gtk_widget_show (layer_select->label);
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return layer_select;
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}
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static void
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layer_select_destroy (LayerSelect *layer_select,
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GdkEvent *event)
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{
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gdk_seat_ungrab (gdk_event_get_seat (event));
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gtk_widget_destroy (layer_select->window);
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/* Flush only if selection actually changed. */
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if (g_list_length (layer_select->orig_layers) !=
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g_list_length (pika_image_get_selected_layers (layer_select->image)))
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{
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pika_image_flush (layer_select->image);
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}
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else
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{
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GList *layers;
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GList *iter;
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layers = pika_image_get_selected_layers (layer_select->image);
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for (iter = layers; iter; iter = iter->next)
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if (! g_list_find (layer_select->orig_layers, iter->data))
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{
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pika_image_flush (layer_select->image);
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break;
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}
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}
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g_list_free (layer_select->orig_layers);
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g_slice_free (LayerSelect, layer_select);
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}
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static void
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layer_select_advance (LayerSelect *layer_select,
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gint move)
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{
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GList *next_layers = NULL;
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GList *selected_layers;
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GList *iter;
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GList *layers;
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gint n_layers;
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gint index;
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if (move == 0)
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return;
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/* If there is a floating selection, allow no advancement */
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if (pika_image_get_floating_selection (layer_select->image))
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return;
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selected_layers = pika_image_get_selected_layers (layer_select->image);
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if (! selected_layers)
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return;
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layers = pika_image_get_layer_list (layer_select->image);
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n_layers = g_list_length (layers);
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for (iter = selected_layers; iter; iter = iter->next)
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{
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PikaLayer *next_layer;
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index = g_list_index (layers, iter->data);
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index += move;
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if (index < 0)
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index = n_layers - 1;
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else if (index >= n_layers)
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index = 0;
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next_layer = g_list_nth_data (layers, index);
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if (next_layer && ! g_list_find (next_layers, next_layer))
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next_layers = g_list_prepend (next_layers, next_layer);
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}
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g_list_free (layers);
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pika_image_set_selected_layers (layer_select->image, next_layers);
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selected_layers = pika_image_get_selected_layers (layer_select->image);
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if (selected_layers)
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{
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if (g_list_length (selected_layers) == 1)
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{
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pika_view_set_viewable (PIKA_VIEW (layer_select->view),
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PIKA_VIEWABLE (selected_layers->data));
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gtk_label_set_text (GTK_LABEL (layer_select->label),
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pika_object_get_name (selected_layers->data));
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}
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else
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{
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pika_view_set_viewable (PIKA_VIEW (layer_select->view), NULL);
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gtk_label_set_text (GTK_LABEL (layer_select->label),
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move > 0 ? _("Layer Selection Moved Down") :
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_("Layer Selection Moved Up"));
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}
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}
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}
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static gboolean
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layer_select_events (GtkWidget *widget,
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GdkEvent *event,
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LayerSelect *layer_select)
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{
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GdkEventKey *kevent;
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switch (event->type)
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{
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case GDK_BUTTON_PRESS:
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layer_select_destroy (layer_select, event);
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break;
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case GDK_KEY_PRESS:
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kevent = (GdkEventKey *) event;
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switch (kevent->keyval)
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{
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case GDK_KEY_Tab:
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layer_select_advance (layer_select, 1);
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break;
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case GDK_KEY_ISO_Left_Tab:
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layer_select_advance (layer_select, -1);
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break;
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}
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return TRUE;
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break;
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case GDK_KEY_RELEASE:
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kevent = (GdkEventKey *) event;
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switch (kevent->keyval)
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{
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case GDK_KEY_Alt_L: case GDK_KEY_Alt_R:
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kevent->state &= ~GDK_MOD1_MASK;
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break;
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case GDK_KEY_Control_L: case GDK_KEY_Control_R:
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kevent->state &= ~GDK_CONTROL_MASK;
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break;
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case GDK_KEY_Shift_L: case GDK_KEY_Shift_R:
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kevent->state &= ~GDK_SHIFT_MASK;
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break;
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}
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if (! (kevent->state & GDK_CONTROL_MASK))
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layer_select_destroy (layer_select, event);
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return TRUE;
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break;
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default:
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break;
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}
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return FALSE;
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}
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