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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 <math.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <gtk/gtk.h>
- #include "config.h"
- #include "libgimp/stdplugins-intl.h"
- #include "resize.h"
-
- #define EVENT_MASK GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK
- #define DRAWING_AREA_SIZE 200
- #define TEXT_WIDTH 35
-
-
- typedef struct _ResizePrivate ResizePrivate;
-
- struct _ResizePrivate
- {
- GtkWidget *width_text;
- GtkWidget *height_text;
- GtkWidget *ratio_x_text;
- GtkWidget *ratio_y_text;
- GtkWidget *off_x_text;
- GtkWidget *off_y_text;
- GtkWidget *drawing_area;
-
- double ratio;
- int constrain;
- int old_width, old_height;
- int area_width, area_height;
- int start_x, start_y;
- int orig_x, orig_y;
- };
-
- static void resize_draw (Resize *);
- static int resize_bound_off_x (Resize *, int);
- static int resize_bound_off_y (Resize *, int);
- static void off_x_update (GtkWidget *w, gpointer data);
- static void off_y_update (GtkWidget *w, gpointer data);
- static void width_update (GtkWidget *w, gpointer data);
- static void height_update (GtkWidget *w, gpointer data);
- static void ratio_x_update (GtkWidget *w, gpointer data);
- static void ratio_y_update (GtkWidget *w, gpointer data);
- static void constrain_update (GtkWidget *w, gpointer data);
- static gint resize_events (GtkWidget *area, GdkEvent *event);
-
-
- Resize *
- resize_widget_new (ResizeType type,
- int width,
- int height)
- {
- Resize *resize;
- ResizePrivate *private;
- GtkWidget *vbox;
- GtkWidget *hbox;
- GtkWidget *label;
- GtkWidget *frame;
- GtkWidget *constrain;
- GtkWidget *table;
- char size[12];
- char ratio_text[12];
-
- table = NULL;
-
- resize = g_new (Resize, 1);
- private = g_new (ResizePrivate, 1);
- resize->type = type;
- resize->private_part = private;
- resize->width = width;
- resize->height = height;
- resize->ratio_x = 1.0;
- resize->ratio_y = 1.0;
- resize->off_x = 0;
- resize->off_y = 0;
- private->old_width = width;
- private->old_height = height;
- private->constrain = TRUE;
-
- /* Get the image width and height variables, based on the gimage */
- if (width > height)
- private->ratio = (double) DRAWING_AREA_SIZE / (double) width;
- else
- private->ratio = (double) DRAWING_AREA_SIZE / (double) height;
- private->area_width = (int) (private->ratio * width);
- private->area_height = (int) (private->ratio * height);
-
- switch (type)
- {
- case ScaleWidget:
- resize->resize_widget = gtk_frame_new ( _("Scale"));
- table = gtk_table_new (4, 2, TRUE);
- break;
- case ResizeWidget:
- resize->resize_widget = gtk_frame_new ( _("Resize"));
- table = gtk_table_new (6, 2, TRUE);
- break;
- }
- gtk_frame_set_shadow_type (GTK_FRAME (resize->resize_widget), GTK_SHADOW_ETCHED_IN);
-
- /* the main vbox */
- vbox = gtk_vbox_new (FALSE, 1);
- gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);
- gtk_container_add (GTK_CONTAINER (resize->resize_widget), vbox);
-
- gtk_container_set_border_width (GTK_CONTAINER (table), 2);
- gtk_box_pack_start (GTK_BOX (vbox), table, TRUE, TRUE, 0);
-
- /* the width label and entry */
- g_snprintf (size, sizeof(size), "%d", width);
- label = gtk_label_new ( _("New width:"));
- gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
- gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_show (label);
- private->width_text = gtk_entry_new ();
- gtk_table_attach (GTK_TABLE (table), private->width_text, 1, 2, 0, 1,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_set_usize (private->width_text, TEXT_WIDTH, 25);
- gtk_entry_set_text (GTK_ENTRY (private->width_text), size);
- gtk_signal_connect (GTK_OBJECT (private->width_text), "changed",
- (GtkSignalFunc) width_update,
- resize);
- gtk_widget_show (private->width_text);
-
- /* the height label and entry */
- g_snprintf (size, sizeof(size), "%d", height);
- label = gtk_label_new ( _("New height:"));
- gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
- gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_show (label);
- private->height_text = gtk_entry_new ();
- gtk_table_attach (GTK_TABLE (table), private->height_text, 1, 2, 1, 2,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_set_usize (private->height_text, TEXT_WIDTH, 25);
- gtk_entry_set_text (GTK_ENTRY (private->height_text), size);
- gtk_signal_connect (GTK_OBJECT (private->height_text), "changed",
- (GtkSignalFunc) height_update,
- resize);
- gtk_widget_show (private->height_text);
-
- /* the x scale ratio label and entry */
- g_snprintf (ratio_text, sizeof(ratio_text), "%0.4f", resize->ratio_x);
- label = gtk_label_new ( _("X ratio:"));
- gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
- gtk_table_attach (GTK_TABLE (table), label, 0, 1, 2, 3,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_show (label);
- private->ratio_x_text = gtk_entry_new ();
- gtk_table_attach (GTK_TABLE (table), private->ratio_x_text, 1, 2, 2, 3,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_set_usize (private->ratio_x_text, TEXT_WIDTH, 25);
- gtk_entry_set_text (GTK_ENTRY (private->ratio_x_text), ratio_text);
- gtk_signal_connect (GTK_OBJECT (private->ratio_x_text), "changed",
- (GtkSignalFunc) ratio_x_update,
- resize);
- gtk_widget_show (private->ratio_x_text);
-
- /* the y scale ratio label and entry */
- g_snprintf (ratio_text, sizeof(ratio_text), "%0.4f", resize->ratio_y);
- label = gtk_label_new ( _("Y ratio:"));
- gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
- gtk_table_attach (GTK_TABLE (table), label, 0, 1, 3, 4,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_show (label);
- private->ratio_y_text = gtk_entry_new ();
- gtk_table_attach (GTK_TABLE (table), private->ratio_y_text, 1, 2, 3, 4,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_set_usize (private->ratio_y_text, TEXT_WIDTH, 25);
- gtk_entry_set_text (GTK_ENTRY (private->ratio_y_text), ratio_text);
- gtk_signal_connect (GTK_OBJECT (private->ratio_y_text), "changed",
- (GtkSignalFunc) ratio_y_update,
- resize);
- gtk_widget_show (private->ratio_y_text);
-
- if (type == ResizeWidget)
- {
- /* the off_x label and entry */
- g_snprintf (size, sizeof(size), "%d", 0);
- label = gtk_label_new ( _("X Offset:"));
- gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
- gtk_table_attach (GTK_TABLE (table), label, 0, 1, 4, 5,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_show (label);
- private->off_x_text = gtk_entry_new ();
- gtk_table_attach (GTK_TABLE (table), private->off_x_text, 1, 2, 4, 5,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_set_usize (private->off_x_text, TEXT_WIDTH, 25);
- gtk_entry_set_text (GTK_ENTRY (private->off_x_text), size);
- gtk_signal_connect (GTK_OBJECT (private->off_x_text), "changed",
- (GtkSignalFunc) off_x_update,
- resize);
- gtk_widget_show (private->off_x_text);
-
- /* the off_y label and entry */
- g_snprintf (size, sizeof(size), "%d", 0);
- label = gtk_label_new ( _("Y Offset:"));
- gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
- gtk_table_attach (GTK_TABLE (table), label, 0, 1, 5, 6,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_show (label);
- private->off_y_text = gtk_entry_new ();
- gtk_table_attach (GTK_TABLE (table), private->off_y_text, 1, 2, 5, 6,
- GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
- gtk_widget_set_usize (private->off_y_text, TEXT_WIDTH, 25);
- gtk_entry_set_text (GTK_ENTRY (private->off_y_text), size);
- gtk_signal_connect (GTK_OBJECT (private->off_y_text), "changed",
- (GtkSignalFunc) off_y_update,
- resize);
- gtk_widget_show (private->off_y_text);
- }
-
- /* the constrain toggle button */
- constrain = gtk_check_button_new_with_label ( _("Constrain Ratio"));
- gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (constrain), private->constrain);
- gtk_box_pack_start (GTK_BOX (vbox), constrain, FALSE, FALSE, 0);
- gtk_signal_connect (GTK_OBJECT (constrain), "toggled",
- (GtkSignalFunc) constrain_update,
- resize);
- gtk_widget_show (constrain);
-
- if (type == ResizeWidget)
- {
- /* frame to hold drawing area */
- hbox = gtk_hbox_new (FALSE, 1);
- gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, FALSE, 0);
- frame = gtk_frame_new (NULL);
- gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
- gtk_container_set_border_width (GTK_CONTAINER (frame), 2);
- gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, FALSE, 0);
- private->drawing_area = gtk_drawing_area_new ();
- gtk_drawing_area_size (GTK_DRAWING_AREA (private->drawing_area),
- private->area_width, private->area_height);
- gtk_widget_set_events (private->drawing_area, EVENT_MASK);
- gtk_signal_connect (GTK_OBJECT (private->drawing_area), "event",
- (GtkSignalFunc) resize_events,
- NULL);
- gtk_object_set_user_data (GTK_OBJECT (private->drawing_area), resize);
- gtk_container_add (GTK_CONTAINER (frame), private->drawing_area);
- gtk_widget_show (private->drawing_area);
- gtk_widget_show (frame);
- gtk_widget_show (hbox);
- }
-
- gtk_widget_show (table);
- gtk_widget_show (vbox);
-
- return resize;
- }
-
- void
- resize_widget_free (Resize *resize)
- {
- g_free (resize->private_part);
- g_free (resize);
- }
-
- static void
- resize_draw (Resize *resize)
- {
- GtkWidget *widget;
- ResizePrivate *private;
- int aw, ah;
- int x, y;
- int w, h;
-
- /* Only need to draw if it's a resize widget */
- if (resize->type != ResizeWidget)
- return;
-
- private = (ResizePrivate *) resize->private_part;
- widget = private->drawing_area;
-
- /* If we're making the size larger */
- if (private->old_width <= resize->width)
- w = resize->width;
- /* otherwise, if we're making the size smaller */
- else
- w = private->old_width * 2 - resize->width;
- /* If we're making the size larger */
- if (private->old_height <= resize->height)
- h = resize->height;
- /* otherwise, if we're making the size smaller */
- else
- h = private->old_height * 2 - resize->height;
-
- if (w > h)
- private->ratio = (double) DRAWING_AREA_SIZE / (double) w;
- else
- private->ratio = (double) DRAWING_AREA_SIZE / (double) h;
-
- aw = (int) (private->ratio * w);
- ah = (int) (private->ratio * h);
-
- if (aw != private->area_width || ah != private->area_height)
- {
- private->area_width = aw;
- private->area_height = ah;
- gtk_widget_set_usize (private->drawing_area, aw, ah);
- }
-
- if (private->old_width <= resize->width)
- x = private->ratio * resize->off_x;
- else
- x = private->ratio * (resize->off_x + private->old_width - resize->width);
- if (private->old_height <= resize->height)
- y = private->ratio * resize->off_y;
- else
- y = private->ratio * (resize->off_y + private->old_height - resize->height);
-
- w = private->ratio * private->old_width;
- h = private->ratio * private->old_height;
-
- gdk_window_clear (private->drawing_area->window);
- gtk_draw_shadow (widget->style, widget->window,
- GTK_STATE_NORMAL, GTK_SHADOW_OUT,
- x, y, w, h);
-
- /* If we're making the size smaller */
- if (private->old_width > resize->width ||
- private->old_height > resize->height)
- {
- if (private->old_width > resize->width)
- {
- x = private->ratio * (private->old_width - resize->width);
- w = private->ratio * resize->width;
- }
- else
- {
- x = -1;
- w = aw + 2;
- }
- if (private->old_height > resize->height)
- {
- y = private->ratio * (private->old_height - resize->height);
- h = private->ratio * resize->height;
- }
- else
- {
- y = -1;
- h = ah + 2;
- }
-
- gdk_draw_rectangle (private->drawing_area->window,
- widget->style->black_gc, 0,
- x, y, w, h);
- }
-
- }
-
- static int
- resize_bound_off_x (Resize *resize,
- int off_x)
- {
- ResizePrivate *private;
-
- private = (ResizePrivate *) resize->private_part;
-
- if (private->old_width <= resize->width)
- off_x = CLAMP (off_x, 0, (resize->width - private->old_width));
- else
- off_x = CLAMP (off_x, (resize->width - private->old_width), 0);
-
- return off_x;
- }
-
- static int
- resize_bound_off_y (Resize *resize,
- int off_y)
- {
- ResizePrivate *private;
-
- private = (ResizePrivate *) resize->private_part;
-
- if (private->old_height <= resize->height)
- off_y = CLAMP (off_y, 0, (resize->height - private->old_height));
- else
- off_y = CLAMP (off_y, (resize->height - private->old_height), 0);
-
- return off_y;
- }
-
- static void
- constrain_update (GtkWidget *w,
- gpointer data)
- {
- Resize *resize;
- ResizePrivate *private;
-
- resize = (Resize *) data;
- private = (ResizePrivate *) resize->private_part;
-
- if (GTK_TOGGLE_BUTTON (w)->active)
- private->constrain = TRUE;
- else
- private->constrain = FALSE;
- }
-
- static void
- off_x_update (GtkWidget *w,
- gpointer data)
- {
- Resize *resize;
- ResizePrivate *private;
- char *str;
- int offset;
-
- resize = (Resize *) data;
- private = (ResizePrivate *) resize->private_part;
- str = gtk_entry_get_text (GTK_ENTRY (w));
-
- offset = atoi (str);
- offset = resize_bound_off_x (resize, offset);
-
- if (offset != resize->off_x)
- {
- resize->off_x = offset;
- resize_draw (resize);
- }
- }
-
- static void
- off_y_update (GtkWidget *w,
- gpointer data)
- {
- Resize *resize;
- ResizePrivate *private;
- char *str;
- int offset;
-
- resize = (Resize *) data;
- private = (ResizePrivate *) resize->private_part;
- str = gtk_entry_get_text (GTK_ENTRY (w));
-
- offset = atoi (str);
- offset = resize_bound_off_y (resize, offset);
-
- if (offset != resize->off_y)
- {
- resize->off_y = offset;
- resize_draw (resize);
- }
- }
-
- static void
- width_update (GtkWidget *w,
- gpointer data)
- {
- Resize *resize;
- ResizePrivate *private;
- char *str;
- double ratio;
- int new_height;
- char size[12];
- char ratio_text[12];
-
- resize = (Resize *) data;
- private = (ResizePrivate *) resize->private_part;
- str = gtk_entry_get_text (GTK_ENTRY (w));
-
- resize->width = atoi (str);
-
- ratio = (double) resize->width / (double) private->old_width;
- resize->ratio_x = ratio;
- g_snprintf (ratio_text, sizeof(ratio_text), "%0.4f", ratio);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->ratio_x_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->ratio_x_text), ratio_text);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->ratio_x_text), data);
-
- if (resize->type == ResizeWidget)
- {
- resize->off_x = resize_bound_off_x (resize, (resize->width - private->old_width) / 2);
- g_snprintf (size, sizeof(size), "%d", resize->off_x);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->off_x_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->off_x_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->off_x_text), data);
- }
-
- if (private->constrain && resize->width != 0)
- {
- private->constrain = FALSE;
- new_height = (int) (private->old_height * ratio);
- if (new_height == 0) new_height = 1;
-
- if (new_height != resize->height)
- {
- resize->height = new_height;
- g_snprintf (size, sizeof(size), "%d", resize->height);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->height_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->height_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->height_text), data);
-
- resize->ratio_y = ratio;
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->ratio_y_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->ratio_y_text), ratio_text);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->ratio_y_text), data);
-
- if (resize->type == ResizeWidget)
- {
- resize->off_y = resize_bound_off_y (resize, (resize->height - private->old_height) / 2);
- g_snprintf (size, sizeof(size), "%d", resize->off_y);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->off_y_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->off_y_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->off_y_text), data);
- }
- }
-
- private->constrain = TRUE;
- }
-
- resize_draw (resize);
- }
-
- static void
- height_update (GtkWidget *w,
- gpointer data)
- {
- Resize *resize;
- ResizePrivate *private;
- char *str;
- double ratio;
- int new_width;
- char size[12];
- char ratio_text[12];
-
- resize = (Resize *) data;
- private = (ResizePrivate *) resize->private_part;
- str = gtk_entry_get_text (GTK_ENTRY (w));
-
- resize->height = atoi (str);
-
- ratio = (double) resize->height / (double) private->old_height;
- resize->ratio_y = ratio;
- g_snprintf (ratio_text, sizeof(ratio_text), "%0.4f", ratio);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->ratio_y_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->ratio_y_text), ratio_text);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->ratio_y_text), data);
- if (resize->type == ResizeWidget)
- {
- resize->off_y = resize_bound_off_y (resize, (resize->height - private->old_height) / 2);
- g_snprintf (size, sizeof(size), "%d", resize->off_y);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->off_y_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->off_y_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->off_y_text), data);
- }
-
- if (private->constrain && resize->height != 0)
- {
- private->constrain = FALSE;
- ratio = (double) resize->height / (double) private->old_height;
- new_width = (int) (private->old_width * ratio);
- if (new_width == 0) new_width = 1;
-
- if (new_width != resize->width)
- {
- resize->width = new_width;
- g_snprintf (size, sizeof(size), "%d", resize->width);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->width_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->width_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->width_text), data);
-
- resize->ratio_x = ratio;
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->ratio_x_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->ratio_x_text), ratio_text);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->ratio_x_text), data);
-
- if (resize->type == ResizeWidget)
- {
- resize->off_x = resize_bound_off_x (resize, (resize->width - private->old_width) / 2);
- g_snprintf (size, sizeof(size), "%d", resize->off_x);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->off_x_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->off_x_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->off_x_text), data);
- }
- }
-
- private->constrain = TRUE;
- }
-
- resize_draw (resize);
- }
-
- static void
- ratio_x_update (GtkWidget *w,
- gpointer data)
- {
- Resize *resize;
- ResizePrivate *private;
- char *str;
- int new_width;
- int new_height;
- char size[12];
- char ratio_text[12];
-
- resize = (Resize *) data;
- private = (ResizePrivate *) resize->private_part;
- str = gtk_entry_get_text (GTK_ENTRY (w));
-
- resize->ratio_x = atof (str);
-
- new_width = (int) ((double) private->old_width * resize->ratio_x);
-
- if (new_width != resize->width)
- {
- resize->width = new_width;
- g_snprintf (size, sizeof(size), "%d", new_width);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->width_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->width_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->width_text), data);
-
- if (resize->type == ResizeWidget)
- {
- resize->off_x = resize_bound_off_x (resize, (resize->width - private->old_width) / 2);
- g_snprintf (size, sizeof(size), "%d", resize->off_x);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->off_x_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->off_x_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->off_x_text), data);
- }
- }
-
- if (private->constrain && resize->width != 0)
- {
- private->constrain = FALSE;
-
- resize->ratio_y = resize->ratio_x;
-
- new_height = (int) (private->old_height * resize->ratio_y);
- if (new_height == 0) new_height = 1;
-
- if (new_height != resize->height)
- {
- resize->height = new_height;
-
- g_snprintf (size, sizeof(size), "%d", resize->height);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->height_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->height_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->height_text), data);
-
- g_snprintf (ratio_text, sizeof(ratio_text), "%0.4f", resize->ratio_y);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->ratio_y_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->ratio_y_text), ratio_text);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->ratio_y_text), data);
-
- if (resize->type == ResizeWidget)
- {
- resize->off_y = resize_bound_off_y (resize, (resize->height - private->old_height) / 2);
- g_snprintf (size, sizeof(size), "%d", resize->off_y);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->off_y_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->off_y_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->off_y_text), data);
- }
- }
-
- private->constrain = TRUE;
- }
-
- resize_draw (resize);
- }
-
- static void
- ratio_y_update (GtkWidget *w,
- gpointer data)
- {
- Resize *resize;
- ResizePrivate *private;
- char *str;
- int new_width;
- int new_height;
- char size[12];
- char ratio_text[12];
-
- resize = (Resize *) data;
- private = (ResizePrivate *) resize->private_part;
- str = gtk_entry_get_text (GTK_ENTRY (w));
-
- resize->ratio_y = atof (str);
-
- new_height = (int) ((double) private->old_height * resize->ratio_y);
-
- if (new_height != resize->height)
- {
- resize->height = new_height;
- g_snprintf (size, sizeof(size), "%d", new_height);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->height_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->height_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->height_text), data);
-
- if (resize->type == ResizeWidget)
- {
- resize->off_y = resize_bound_off_y (resize, (resize->height - private->old_height) / 2);
- g_snprintf (size, sizeof(size), "%d", resize->off_y);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->off_y_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->off_y_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->off_y_text), data);
- }
- }
-
- if (private->constrain && resize->height != 0)
- {
- private->constrain = FALSE;
-
- resize->ratio_x = resize->ratio_y;
-
- new_width = (int) (private->old_width * resize->ratio_x);
- if (new_width == 0) new_width = 1;
-
- if (new_width != resize->width)
- {
- resize->width = new_width;
-
- g_snprintf (size, sizeof(size), "%d", resize->width);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->width_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->width_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->width_text), data);
-
- g_snprintf (ratio_text, sizeof(ratio_text), "%0.4f", resize->ratio_x);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->ratio_x_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->ratio_x_text), ratio_text);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->ratio_x_text), data);
-
- if (resize->type == ResizeWidget)
- {
- resize->off_x = resize_bound_off_x (resize, (resize->width - private->old_width) / 2);
- g_snprintf (size, sizeof(size), "%d", resize->off_x);
-
- gtk_signal_handler_block_by_data (GTK_OBJECT (private->off_x_text), data);
- gtk_entry_set_text (GTK_ENTRY (private->off_x_text), size);
- gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->off_x_text), data);
- }
- }
-
- private->constrain = TRUE;
- }
-
- resize_draw (resize);
- }
-
- static gint
- resize_events (GtkWidget *widget,
- GdkEvent *event)
- {
- Resize *resize;
- ResizePrivate *private;
- int dx, dy;
- int off_x, off_y;
- char size[12];
-
- resize = (Resize *) gtk_object_get_user_data (GTK_OBJECT (widget));
- private = (ResizePrivate *) resize->private_part;
-
- switch (event->type)
- {
- case GDK_EXPOSE:
- resize_draw (resize);
- break;
- case GDK_BUTTON_PRESS:
- gdk_pointer_grab (private->drawing_area->window, FALSE,
- (GDK_BUTTON1_MOTION_MASK |
- GDK_BUTTON_RELEASE_MASK),
- NULL, NULL, event->button.time);
- private->orig_x = resize->off_x;
- private->orig_y = resize->off_y;
- private->start_x = event->button.x;
- private->start_y = event->button.y;
- break;
- case GDK_MOTION_NOTIFY:
- /* X offset */
- dx = event->motion.x - private->start_x;
- off_x = private->orig_x + dx / private->ratio;
- off_x = resize_bound_off_x (resize, off_x);
- g_snprintf (size, sizeof(size), "%d", off_x);
- gtk_entry_set_text (GTK_ENTRY (private->off_x_text), size);
-
- /* Y offset */
- dy = event->motion.y - private->start_y;
- off_y = private->orig_y + dy / private->ratio;
- off_y = resize_bound_off_y (resize, off_y);
- g_snprintf (size, sizeof(size), "%d", off_y);
- gtk_entry_set_text (GTK_ENTRY (private->off_y_text), size);
- break;
- case GDK_BUTTON_RELEASE:
- gdk_pointer_ungrab (event->button.time);
- break;
- default:
- break;
- }
-
- return FALSE;
- }
-