mirror of https://github.com/GNOME/gimp.git
425 lines
13 KiB
C
425 lines
13 KiB
C
/*
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* This is a plug-in for GIMP.
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*
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* Generates clickable image maps.
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*
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* Copyright (C) 1998-2005 Maurits Rijk m.rijk@chello.nl
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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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <gtk/gtk.h>
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#include <libgimp/gimp.h>
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#include <libgimp/gimpui.h>
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#include "imap_grid.h"
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#include "imap_main.h"
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#include "imap_menu.h"
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#include "imap_preview.h"
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#include "imap_table.h"
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#include "libgimp/stdplugins-intl.h"
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typedef enum {GRID_HIDDEN, GRID_LINES, GRID_CROSSES} GridType_t;
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typedef struct {
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DefaultDialog_t *dialog;
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GtkWidget *type_frame;
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GtkWidget *granularity_frame;
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GtkWidget *offset_frame;
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GtkWidget *snap;
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GtkWidget *width;
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GtkWidget *height;
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GtkWidget *chain_width_height;
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GtkWidget *left;
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GtkWidget *top;
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GtkWidget *chain_left_top;
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GtkWidget *hidden;
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GtkWidget *lines;
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GtkWidget *crosses;
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GtkWidget *preview;
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gboolean enable_preview;
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} GridDialog_t;
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static GdkGC *grid_gc;
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static gboolean grid_snap = FALSE;
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static gint grid_width = 15;
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static gint grid_height = 15;
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static gint grid_left = 0;
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static gint grid_top = 0;
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static GridType_t grid_type = GRID_LINES;
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static void
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grid_settings_ok_cb(gpointer data)
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{
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GridDialog_t *param = (GridDialog_t*) data;
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gboolean new_snap;
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new_snap = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(param->snap));
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grid_width = gtk_spin_button_get_value_as_int(
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GTK_SPIN_BUTTON(param->width));
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grid_height = gtk_spin_button_get_value_as_int(
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GTK_SPIN_BUTTON(param->height));
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grid_left = gtk_spin_button_get_value_as_int(
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GTK_SPIN_BUTTON(param->left));
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grid_top = gtk_spin_button_get_value_as_int(
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GTK_SPIN_BUTTON(param->top));
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if (grid_snap != new_snap) {
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grid_snap = new_snap;
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menu_check_grid(grid_snap);
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}
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redraw_preview();
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}
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static void
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snap_toggled_cb(GtkWidget *widget, gpointer data)
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{
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GridDialog_t *param = (GridDialog_t*) data;
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gint sensitive = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget));
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gtk_widget_set_sensitive(param->type_frame, sensitive);
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gtk_widget_set_sensitive(param->granularity_frame, sensitive);
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gtk_widget_set_sensitive(param->offset_frame, sensitive);
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gtk_widget_set_sensitive(param->preview, sensitive);
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}
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static void
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type_toggled_cb(GtkWidget *widget, gpointer data)
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{
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if (GTK_WIDGET_STATE(widget) & GTK_STATE_SELECTED) {
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grid_type = GPOINTER_TO_INT (data);
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redraw_preview();
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}
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}
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static void
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toggle_preview_cb(GtkWidget *widget, GridDialog_t *param)
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{
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param->enable_preview =
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gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget));
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redraw_preview();
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}
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static void
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grid_assign_value(GtkWidget *widget, gpointer data, gint *value)
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{
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GridDialog_t *dialog = (GridDialog_t*) data;
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if (dialog->enable_preview) {
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*value = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(widget));
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redraw_preview(); /* Fix me! */
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}
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}
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static void
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width_changed_cb(GtkWidget *widget, gpointer data)
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{
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GridDialog_t *dialog = (GridDialog_t*) data;
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grid_assign_value(widget, data, &grid_width);
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if (gimp_chain_button_get_active(
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GIMP_CHAIN_BUTTON(dialog->chain_width_height))) {
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gint value = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(widget));
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gtk_spin_button_set_value(GTK_SPIN_BUTTON(dialog->height), value);
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}
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}
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static void
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height_changed_cb(GtkWidget *widget, gpointer data)
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{
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GridDialog_t *dialog = (GridDialog_t*) data;
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grid_assign_value(widget, data, &grid_height);
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if (gimp_chain_button_get_active(
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GIMP_CHAIN_BUTTON(dialog->chain_width_height))) {
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gint value = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(widget));
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gtk_spin_button_set_value(GTK_SPIN_BUTTON(dialog->width), value);
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}
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}
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static void
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left_changed_cb(GtkWidget *widget, gpointer data)
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{
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GridDialog_t *dialog = (GridDialog_t*) data;
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grid_assign_value(widget, data, &grid_left);
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if (gimp_chain_button_get_active(
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GIMP_CHAIN_BUTTON(dialog->chain_left_top))) {
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gint value = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(widget));
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gtk_spin_button_set_value(GTK_SPIN_BUTTON(dialog->top), value);
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}
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}
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static void
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top_changed_cb(GtkWidget *widget, gpointer data)
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{
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GridDialog_t *dialog = (GridDialog_t*) data;
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grid_assign_value(widget, data, &grid_top);
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if (gimp_chain_button_get_active(
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GIMP_CHAIN_BUTTON(dialog->chain_left_top))) {
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gint value = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(widget));
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gtk_spin_button_set_value(GTK_SPIN_BUTTON(dialog->left), value);
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}
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}
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static GridDialog_t*
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create_grid_settings_dialog(void)
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{
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GridDialog_t *data = g_new(GridDialog_t, 1);
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DefaultDialog_t *dialog;
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GtkWidget *main_table, *table, *label;
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GtkWidget *frame;
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GtkWidget *hbox;
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GtkWidget *button;
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GtkWidget *chain_button;
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data->dialog = dialog = make_default_dialog(_("Grid Settings"));
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default_dialog_set_ok_cb(dialog, grid_settings_ok_cb, (gpointer) data);
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main_table = default_dialog_add_table(dialog, 4, 2);
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data->snap = gtk_check_button_new_with_mnemonic(_("_Snap-to grid enabled"));
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g_signal_connect(data->snap, "toggled",
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G_CALLBACK (snap_toggled_cb), data);
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gtk_table_attach_defaults(GTK_TABLE(main_table), data->snap, 0, 1, 0, 1);
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gtk_widget_show(data->snap);
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data->type_frame = frame = gimp_frame_new(_("Grid Visibility and Type"));
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gtk_widget_show(frame);
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gtk_table_attach_defaults(GTK_TABLE(main_table), frame, 0, 2, 1, 2);
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hbox = gtk_hbox_new(FALSE, 6);
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gtk_container_add(GTK_CONTAINER(frame), hbox);
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gtk_widget_show(hbox);
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button = gtk_radio_button_new_with_mnemonic_from_widget(NULL, _("_Hidden"));
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data->hidden = button;
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g_signal_connect(button, "toggled",
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G_CALLBACK (type_toggled_cb), (gpointer) GRID_HIDDEN);
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gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
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gtk_widget_show(button);
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button = gtk_radio_button_new_with_mnemonic_from_widget(
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GTK_RADIO_BUTTON(button), _("_Lines"));
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data->lines = button;
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g_signal_connect(button, "toggled",
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G_CALLBACK (type_toggled_cb), (gpointer) GRID_LINES);
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gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(button), TRUE);
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gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
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gtk_widget_show(button);
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button = gtk_radio_button_new_with_mnemonic_from_widget(
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GTK_RADIO_BUTTON(button), _("C_rosses"));
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data->crosses = button;
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g_signal_connect(button, "toggled",
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G_CALLBACK (type_toggled_cb),
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(gpointer) GRID_CROSSES);
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gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
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gtk_widget_show(button);
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data->granularity_frame = frame = gimp_frame_new(_("Grid Granularity"));
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gtk_table_attach_defaults(GTK_TABLE(main_table), frame, 0, 1, 2, 3);
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table = gtk_table_new(2, 4, FALSE);
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gtk_table_set_row_spacings(GTK_TABLE(table), 6);
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gtk_table_set_col_spacings(GTK_TABLE(table), 6);
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gtk_container_add(GTK_CONTAINER(frame), table);
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label = create_label_in_table(table, 0, 0, _("_Width"));
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data->width = create_spin_button_in_table(table, label, 0, 1, 15, 1, 100);
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g_signal_connect(data->width, "value-changed",
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G_CALLBACK (width_changed_cb), (gpointer) data);
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create_label_in_table(table, 0, 3, _("pixels"));
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label = create_label_in_table(table, 1, 0, _("_Height"));
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data->height = create_spin_button_in_table(table, label, 1, 1, 15, 1, 100);
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g_signal_connect(data->height, "value-changed",
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G_CALLBACK (height_changed_cb), (gpointer) data);
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create_label_in_table(table, 1, 3, _("pixels"));
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chain_button = gimp_chain_button_new(GIMP_CHAIN_RIGHT);
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data->chain_width_height = chain_button;
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gtk_table_attach_defaults(GTK_TABLE(table), chain_button, 2, 3, 0, 2);
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gtk_widget_show(chain_button);
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gtk_widget_show(table);
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gtk_widget_show(frame);
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data->offset_frame = frame = gimp_frame_new(_("Grid Offset"));
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gtk_table_attach_defaults(GTK_TABLE(main_table), frame, 1, 2, 2, 3);
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table = gtk_table_new(2, 3, FALSE);
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gtk_table_set_row_spacings(GTK_TABLE(table), 6);
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gtk_table_set_col_spacings(GTK_TABLE(table), 6);
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gtk_container_add(GTK_CONTAINER(frame), table);
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label = create_label_in_table(table, 0, 2, _("pixels from l_eft"));
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data->left = create_spin_button_in_table(table, label, 0, 0, 0, 0, 100);
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g_signal_connect(data->left, "value-changed",
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G_CALLBACK (left_changed_cb), (gpointer) data);
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label = create_label_in_table(table, 1, 2, _("pixels from _top"));
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data->top = create_spin_button_in_table(table, label, 1, 0, 0, 0, 100);
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g_signal_connect(data->top, "value-changed",
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G_CALLBACK (top_changed_cb), (gpointer) data);
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chain_button = gimp_chain_button_new(GIMP_CHAIN_RIGHT);
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data->chain_left_top = chain_button;
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gtk_table_attach_defaults(GTK_TABLE(table), chain_button, 1, 2, 0, 2);
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gtk_widget_show(chain_button);
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data->preview = create_check_button_in_table(main_table, 3, 0,
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_("_Preview"));
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g_signal_connect(data->preview, "toggled",
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G_CALLBACK (toggle_preview_cb), (gpointer) data);
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gtk_widget_show(data->preview);
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snap_toggled_cb(data->snap, data);
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gtk_widget_show(table);
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gtk_widget_show(frame);
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return data;
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}
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void
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do_grid_settings_dialog(void)
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{
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static GridDialog_t* dialog;
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GtkWidget *type;
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if (!dialog)
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dialog = create_grid_settings_dialog();
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gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(dialog->snap), grid_snap);
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gtk_spin_button_set_value(GTK_SPIN_BUTTON(dialog->width), grid_width);
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gtk_spin_button_set_value(GTK_SPIN_BUTTON(dialog->height), grid_height);
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gtk_spin_button_set_value(GTK_SPIN_BUTTON(dialog->left), grid_left);
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gtk_spin_button_set_value(GTK_SPIN_BUTTON(dialog->top), grid_top);
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if (grid_type == GRID_HIDDEN)
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type = dialog->hidden;
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else if (grid_type == GRID_LINES)
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type = dialog->lines;
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else
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type = dialog->crosses;
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gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(type), TRUE);
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default_dialog_show(dialog->dialog);
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}
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static void
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draw_lines(GdkWindow *window, GdkGC* gc, gint width, gint height)
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{
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gint x, y;
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for (x = grid_left; x < width; x += grid_width)
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draw_line(window, grid_gc, x, 1, x, height);
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for (y = grid_top; y < height; y += grid_height)
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draw_line(window, grid_gc, 1, y, width, y);
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}
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static void
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draw_crosses(GdkWindow *window, GdkGC* gc, gint width, gint height)
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{
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gint x, y;
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for (x = grid_left; x < width; x += grid_width) {
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for (y = grid_top; y < height; y += grid_height) {
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draw_line(window, gc, x - 3, y, x + 3, y);
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draw_line(window, gc, x, y - 3, x, y + 3);
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}
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}
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}
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void
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draw_grid(GtkWidget *preview)
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{
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if (grid_snap && grid_type != GRID_HIDDEN)
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{
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gint width = preview_get_width(preview);
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gint height = preview_get_height(preview);
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if (!grid_gc)
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{
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grid_gc = gdk_gc_new(preview->window);
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gdk_gc_set_line_attributes(grid_gc, 1, GDK_LINE_ON_OFF_DASH,
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GDK_CAP_BUTT, GDK_JOIN_BEVEL);
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}
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if (grid_type == GRID_LINES)
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{
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draw_lines(preview->window, grid_gc, width, height);
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}
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else
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{
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GtkStyle *style = gtk_widget_get_style (preview);
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draw_crosses(preview->window, style->black_gc, width,
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height);
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}
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}
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}
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void
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toggle_grid(void)
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{
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grid_snap = !grid_snap;
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redraw_preview();
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}
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static gint
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grid_nearest_x(gint x)
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{
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return grid_left + (x - grid_left + grid_width / 2) / grid_width
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* grid_width;
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}
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static gint
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grid_nearest_y(gint y)
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{
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return grid_top + (y - grid_top + grid_height / 2) / grid_height
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* grid_height;
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}
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void
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round_to_grid(gint *x, gint *y)
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{
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if (grid_snap) {
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*x = grid_nearest_x(*x);
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*y = grid_nearest_y(*y);
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}
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}
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gboolean
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grid_near_x(gint x)
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{
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return grid_snap && grid_type != GRID_HIDDEN
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&& abs(grid_nearest_x(x) - x) <= 1;
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}
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gboolean
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grid_near_y(gint y)
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{
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return grid_snap && grid_type != GRID_HIDDEN
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&& abs(grid_nearest_x(y) - y) <= 1;
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}
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