mirror of https://github.com/GNOME/gimp.git
823 lines
25 KiB
C
823 lines
25 KiB
C
/* The GIMP -- an image manipulation program
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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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "appenv.h"
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#include "resize.h"
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#define EVENT_MASK GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK
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#define DRAWING_AREA_SIZE 200
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#define TEXT_WIDTH 35
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typedef struct _ResizePrivate ResizePrivate;
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struct _ResizePrivate
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{
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GtkWidget *width_text;
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GtkWidget *height_text;
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GtkWidget *ratio_x_text;
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GtkWidget *ratio_y_text;
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GtkWidget *off_x_text;
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GtkWidget *off_y_text;
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GtkWidget *drawing_area;
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double ratio;
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int constrain;
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int old_width, old_height;
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int area_width, area_height;
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int start_x, start_y;
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int orig_x, orig_y;
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};
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static void resize_draw (Resize *);
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static int resize_bound_off_x (Resize *, int);
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static int resize_bound_off_y (Resize *, int);
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static void off_x_update (GtkWidget *w, gpointer data);
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static void off_y_update (GtkWidget *w, gpointer data);
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static void width_update (GtkWidget *w, gpointer data);
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static void height_update (GtkWidget *w, gpointer data);
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static void ratio_x_update (GtkWidget *w, gpointer data);
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static void ratio_y_update (GtkWidget *w, gpointer data);
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static void constrain_update (GtkWidget *w, gpointer data);
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static gint resize_events (GtkWidget *area, GdkEvent *event);
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Resize *
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resize_widget_new (ResizeType type,
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int width,
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int height)
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{
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Resize *resize;
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ResizePrivate *private;
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GtkWidget *vbox;
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GtkWidget *hbox;
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GtkWidget *label;
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GtkWidget *frame;
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GtkWidget *constrain;
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GtkWidget *table;
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char size[12];
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char ratio_text[12];
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table = NULL;
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resize = g_new (Resize, 1);
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private = g_new (ResizePrivate, 1);
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resize->type = type;
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resize->private_part = private;
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resize->width = width;
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resize->height = height;
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resize->ratio_x = 1.0;
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resize->ratio_y = 1.0;
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resize->off_x = 0;
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resize->off_y = 0;
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private->old_width = width;
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private->old_height = height;
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private->constrain = TRUE;
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/* Get the image width and height variables, based on the gimage */
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if (width > height)
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private->ratio = (double) DRAWING_AREA_SIZE / (double) width;
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else
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private->ratio = (double) DRAWING_AREA_SIZE / (double) height;
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private->area_width = (int) (private->ratio * width);
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private->area_height = (int) (private->ratio * height);
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switch (type)
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{
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case ScaleWidget:
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resize->resize_widget = gtk_frame_new ("Scale");
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table = gtk_table_new (4, 2, TRUE);
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break;
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case ResizeWidget:
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resize->resize_widget = gtk_frame_new ("Resize");
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table = gtk_table_new (6, 2, TRUE);
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break;
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}
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gtk_frame_set_shadow_type (GTK_FRAME (resize->resize_widget), GTK_SHADOW_ETCHED_IN);
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/* the main vbox */
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vbox = gtk_vbox_new (FALSE, 1);
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gtk_container_border_width (GTK_CONTAINER (vbox), 5);
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gtk_container_add (GTK_CONTAINER (resize->resize_widget), vbox);
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gtk_container_border_width (GTK_CONTAINER (table), 2);
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gtk_box_pack_start (GTK_BOX (vbox), table, TRUE, TRUE, 0);
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/* the width label and entry */
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sprintf (size, "%d", width);
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label = gtk_label_new ("New width:");
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gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_show (label);
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private->width_text = gtk_entry_new ();
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gtk_table_attach (GTK_TABLE (table), private->width_text, 1, 2, 0, 1,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_set_usize (private->width_text, TEXT_WIDTH, 25);
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gtk_entry_set_text (GTK_ENTRY (private->width_text), size);
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gtk_signal_connect (GTK_OBJECT (private->width_text), "changed",
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(GtkSignalFunc) width_update,
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resize);
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gtk_widget_show (private->width_text);
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/* the height label and entry */
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sprintf (size, "%d", height);
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label = gtk_label_new ("New height:");
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gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_show (label);
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private->height_text = gtk_entry_new ();
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gtk_table_attach (GTK_TABLE (table), private->height_text, 1, 2, 1, 2,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_set_usize (private->height_text, TEXT_WIDTH, 25);
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gtk_entry_set_text (GTK_ENTRY (private->height_text), size);
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gtk_signal_connect (GTK_OBJECT (private->height_text), "changed",
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(GtkSignalFunc) height_update,
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resize);
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gtk_widget_show (private->height_text);
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/* the x scale ratio label and entry */
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sprintf (ratio_text, "%0.4f", resize->ratio_x);
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label = gtk_label_new ("X ratio:");
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gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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gtk_table_attach (GTK_TABLE (table), label, 0, 1, 2, 3,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_show (label);
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private->ratio_x_text = gtk_entry_new ();
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gtk_table_attach (GTK_TABLE (table), private->ratio_x_text, 1, 2, 2, 3,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_set_usize (private->ratio_x_text, TEXT_WIDTH, 25);
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gtk_entry_set_text (GTK_ENTRY (private->ratio_x_text), ratio_text);
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gtk_signal_connect (GTK_OBJECT (private->ratio_x_text), "changed",
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(GtkSignalFunc) ratio_x_update,
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resize);
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gtk_widget_show (private->ratio_x_text);
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/* the y scale ratio label and entry */
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sprintf (ratio_text, "%0.4f", resize->ratio_y);
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label = gtk_label_new ("Y ratio:");
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gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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gtk_table_attach (GTK_TABLE (table), label, 0, 1, 3, 4,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_show (label);
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private->ratio_y_text = gtk_entry_new ();
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gtk_table_attach (GTK_TABLE (table), private->ratio_y_text, 1, 2, 3, 4,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_set_usize (private->ratio_y_text, TEXT_WIDTH, 25);
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gtk_entry_set_text (GTK_ENTRY (private->ratio_y_text), ratio_text);
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gtk_signal_connect (GTK_OBJECT (private->ratio_y_text), "changed",
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(GtkSignalFunc) ratio_y_update,
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resize);
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gtk_widget_show (private->ratio_y_text);
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if (type == ResizeWidget)
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{
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/* the off_x label and entry */
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sprintf (size, "%d", 0);
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label = gtk_label_new ("X Offset:");
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gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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gtk_table_attach (GTK_TABLE (table), label, 0, 1, 4, 5,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_show (label);
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private->off_x_text = gtk_entry_new ();
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gtk_table_attach (GTK_TABLE (table), private->off_x_text, 1, 2, 4, 5,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_set_usize (private->off_x_text, TEXT_WIDTH, 25);
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gtk_entry_set_text (GTK_ENTRY (private->off_x_text), size);
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gtk_signal_connect (GTK_OBJECT (private->off_x_text), "changed",
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(GtkSignalFunc) off_x_update,
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resize);
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gtk_widget_show (private->off_x_text);
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/* the off_y label and entry */
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sprintf (size, "%d", 0);
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label = gtk_label_new ("Y Offset:");
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gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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gtk_table_attach (GTK_TABLE (table), label, 0, 1, 5, 6,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_show (label);
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private->off_y_text = gtk_entry_new ();
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gtk_table_attach (GTK_TABLE (table), private->off_y_text, 1, 2, 5, 6,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK, 2, 2);
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gtk_widget_set_usize (private->off_y_text, TEXT_WIDTH, 25);
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gtk_entry_set_text (GTK_ENTRY (private->off_y_text), size);
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gtk_signal_connect (GTK_OBJECT (private->off_y_text), "changed",
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(GtkSignalFunc) off_y_update,
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resize);
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gtk_widget_show (private->off_y_text);
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}
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/* the constrain toggle button */
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constrain = gtk_check_button_new_with_label ("Constrain Ratio");
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gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (constrain), private->constrain);
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gtk_box_pack_start (GTK_BOX (vbox), constrain, FALSE, FALSE, 0);
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gtk_signal_connect (GTK_OBJECT (constrain), "toggled",
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(GtkSignalFunc) constrain_update,
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resize);
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gtk_widget_show (constrain);
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if (type == ResizeWidget)
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{
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/* frame to hold drawing area */
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hbox = gtk_hbox_new (FALSE, 1);
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gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, FALSE, 0);
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frame = gtk_frame_new (NULL);
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gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
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gtk_container_border_width (GTK_CONTAINER (frame), 2);
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gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, FALSE, 0);
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private->drawing_area = gtk_drawing_area_new ();
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gtk_drawing_area_size (GTK_DRAWING_AREA (private->drawing_area),
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private->area_width, private->area_height);
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gtk_widget_set_events (private->drawing_area, EVENT_MASK);
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gtk_signal_connect (GTK_OBJECT (private->drawing_area), "event",
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(GtkSignalFunc) resize_events,
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NULL);
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gtk_object_set_user_data (GTK_OBJECT (private->drawing_area), resize);
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gtk_container_add (GTK_CONTAINER (frame), private->drawing_area);
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gtk_widget_show (private->drawing_area);
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gtk_widget_show (frame);
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gtk_widget_show (hbox);
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}
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gtk_widget_show (table);
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gtk_widget_show (vbox);
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return resize;
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}
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void
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resize_widget_free (Resize *resize)
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{
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g_free (resize->private_part);
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g_free (resize);
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}
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static void
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resize_draw (Resize *resize)
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{
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GtkWidget *widget;
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ResizePrivate *private;
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int aw, ah;
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int x, y;
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int w, h;
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/* Only need to draw if it's a resize widget */
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if (resize->type != ResizeWidget)
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return;
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private = (ResizePrivate *) resize->private_part;
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widget = private->drawing_area;
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/* If we're making the size larger */
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if (private->old_width <= resize->width)
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w = resize->width;
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/* otherwise, if we're making the size smaller */
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else
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w = private->old_width * 2 - resize->width;
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/* If we're making the size larger */
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if (private->old_height <= resize->height)
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h = resize->height;
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/* otherwise, if we're making the size smaller */
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else
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h = private->old_height * 2 - resize->height;
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if (w > h)
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private->ratio = (double) DRAWING_AREA_SIZE / (double) w;
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else
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private->ratio = (double) DRAWING_AREA_SIZE / (double) h;
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aw = (int) (private->ratio * w);
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ah = (int) (private->ratio * h);
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if (aw != private->area_width || ah != private->area_height)
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{
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private->area_width = aw;
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private->area_height = ah;
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gtk_widget_set_usize (private->drawing_area, aw, ah);
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}
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if (private->old_width <= resize->width)
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x = private->ratio * resize->off_x;
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else
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x = private->ratio * (resize->off_x + private->old_width - resize->width);
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if (private->old_height <= resize->height)
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y = private->ratio * resize->off_y;
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else
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y = private->ratio * (resize->off_y + private->old_height - resize->height);
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w = private->ratio * private->old_width;
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h = private->ratio * private->old_height;
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gdk_window_clear (private->drawing_area->window);
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gtk_draw_shadow (widget->style, widget->window,
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GTK_STATE_NORMAL, GTK_SHADOW_OUT,
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x, y, w, h);
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/* If we're making the size smaller */
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if (private->old_width > resize->width ||
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private->old_height > resize->height)
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{
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if (private->old_width > resize->width)
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{
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x = private->ratio * (private->old_width - resize->width);
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w = private->ratio * resize->width;
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}
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else
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{
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x = -1;
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w = aw + 2;
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}
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if (private->old_height > resize->height)
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{
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y = private->ratio * (private->old_height - resize->height);
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h = private->ratio * resize->height;
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}
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else
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{
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y = -1;
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h = ah + 2;
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}
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gdk_draw_rectangle (private->drawing_area->window,
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widget->style->black_gc, 0,
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x, y, w, h);
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}
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}
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static int
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resize_bound_off_x (Resize *resize,
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int off_x)
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{
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ResizePrivate *private;
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private = (ResizePrivate *) resize->private_part;
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if (private->old_width <= resize->width)
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off_x = BOUNDS (off_x, 0, (resize->width - private->old_width));
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else
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off_x = BOUNDS (off_x, (resize->width - private->old_width), 0);
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return off_x;
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}
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static int
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resize_bound_off_y (Resize *resize,
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int off_y)
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{
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ResizePrivate *private;
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private = (ResizePrivate *) resize->private_part;
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if (private->old_height <= resize->height)
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off_y = BOUNDS (off_y, 0, (resize->height - private->old_height));
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else
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off_y = BOUNDS (off_y, (resize->height - private->old_height), 0);
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return off_y;
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}
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static void
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constrain_update (GtkWidget *w,
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gpointer data)
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{
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Resize *resize;
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ResizePrivate *private;
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resize = (Resize *) data;
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private = (ResizePrivate *) resize->private_part;
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if (GTK_TOGGLE_BUTTON (w)->active)
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private->constrain = TRUE;
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else
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private->constrain = FALSE;
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}
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static void
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off_x_update (GtkWidget *w,
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gpointer data)
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{
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Resize *resize;
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ResizePrivate *private;
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char *str;
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int offset;
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resize = (Resize *) data;
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private = (ResizePrivate *) resize->private_part;
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str = gtk_entry_get_text (GTK_ENTRY (w));
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offset = atoi (str);
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offset = resize_bound_off_x (resize, offset);
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if (offset != resize->off_x)
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{
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resize->off_x = offset;
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resize_draw (resize);
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}
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}
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static void
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off_y_update (GtkWidget *w,
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gpointer data)
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{
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Resize *resize;
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ResizePrivate *private;
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char *str;
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int offset;
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resize = (Resize *) data;
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private = (ResizePrivate *) resize->private_part;
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str = gtk_entry_get_text (GTK_ENTRY (w));
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offset = atoi (str);
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offset = resize_bound_off_y (resize, offset);
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if (offset != resize->off_y)
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{
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resize->off_y = offset;
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resize_draw (resize);
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}
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}
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static void
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width_update (GtkWidget *w,
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gpointer data)
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{
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Resize *resize;
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ResizePrivate *private;
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char *str;
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double ratio;
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int new_height;
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char size[12];
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char ratio_text[12];
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resize = (Resize *) data;
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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;
|
|
sprintf (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);
|
|
sprintf (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;
|
|
sprintf (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);
|
|
sprintf (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;
|
|
sprintf (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);
|
|
sprintf (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;
|
|
sprintf (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);
|
|
sprintf (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;
|
|
sprintf (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);
|
|
sprintf (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;
|
|
|
|
sprintf (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);
|
|
|
|
sprintf (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);
|
|
sprintf (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;
|
|
sprintf (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);
|
|
sprintf (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;
|
|
|
|
sprintf (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);
|
|
|
|
sprintf (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);
|
|
sprintf (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);
|
|
sprintf (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);
|
|
sprintf (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;
|
|
}
|