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gimp/app/resize.c

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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 "config.h"
#include <gtk/gtk.h>
#include "apptypes.h"
#include "appenv.h"
#include "gdisplay.h"
#include "resize.h"
#include "undo.h"
#include "gimprc.h"
#include "gimpui.h"
#include "libgimp/gimpchainbutton.h"
#include "libgimp/gimplimits.h"
#include "libgimp/gimpmath.h"
#include "libgimp/gimpsizeentry.h"
#include "libgimp/gimpintl.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
{
/* size frame */
GtkWidget *orig_width_label;
GtkWidget *orig_height_label;
GtkWidget *size_se;
GtkObject *ratio_x_adj;
GtkObject *ratio_y_adj;
GtkWidget *constrain;
/* offset frame */
GtkWidget *offset_se;
GtkWidget *drawing_area;
/* resolution frame */
GtkWidget *printsize_se;
GtkWidget *resolution_se;
GtkWidget *equal_res;
gdouble ratio;
gint old_width, old_height;
gdouble old_res_x, old_res_y;
gint area_width, area_height;
gint start_x, start_y;
gint orig_x, orig_y;
};
static void resize_draw (Resize *resize);
static void unit_update (GtkWidget *widget,
gpointer data);
static gint resize_bound_off_x (Resize *resize,
gint off_x);
static gint resize_bound_off_y (Resize *resize,
gint off_y);
static void orig_labels_update (GtkWidget *widget,
gpointer data);
static void reset_callback (GtkWidget *widget,
gpointer data);
static void size_callback (GtkWidget *widget,
gpointer data);
static void ratio_callback (GtkWidget *widget,
gpointer data);
static void size_update (Resize *widget,
gdouble width,
gdouble height,
gdouble ratio_x,
gdouble ratio_y);
static void offset_update (GtkWidget *widget,
gpointer data);
static gint resize_events (GtkWidget *widget,
GdkEvent *event);
static void printsize_update (GtkWidget *widget,
gpointer data);
static void resolution_callback (GtkWidget *widget,
gpointer data);
static void resolution_update (Resize *resize,
gdouble res_x,
gdouble res_y);
static void resize_scale_warn_callback (GtkWidget *widget,
gboolean do_scale,
gpointer data);
Resize *
resize_widget_new (ResizeType type,
ResizeTarget target,
GtkObject *object,
gchar *signal,
gint width,
gint height,
gdouble resolution_x,
gdouble resolution_y,
GimpUnit unit,
gboolean dot_for_dot,
GtkSignalFunc ok_cb,
GtkSignalFunc cancel_cb,
gpointer user_data)
{
Resize *resize;
ResizePrivate *private;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *table2;
GtkWidget *label;
GtkWidget *frame;
GtkWidget *spinbutton;
GtkWidget *abox;
GtkObject *adjustment;
abox = NULL;
frame = NULL;
private = g_new0 (ResizePrivate, 1);
private->old_width = width;
private->old_height = height;
private->old_res_x = resolution_x;
private->old_res_y = resolution_y;
resize = g_new (Resize, 1);
resize->type = type;
resize->target = target;
resize->private_part = private;
resize->width = width;
resize->height = height;
resize->resolution_x = resolution_x;
resize->resolution_y = resolution_y;
resize->unit = unit;
resize->ratio_x = 1.0;
resize->ratio_y = 1.0;
resize->offset_x = 0;
resize->offset_y = 0;
/* Get the image width and height variables, based on the gimage */
if (width > height)
private->ratio = (gdouble) DRAWING_AREA_SIZE / (gdouble) width;
else
private->ratio = (gdouble) DRAWING_AREA_SIZE / (gdouble) height;
private->area_width = (gint) (private->ratio * width);
private->area_height = (gint) (private->ratio * height);
/* dialog box */
{
const gchar *wmclass = NULL;
const gchar *window_title = NULL;
gchar *help_page = NULL;
switch (type)
{
case ScaleWidget:
switch (target)
{
case ResizeLayer:
wmclass = "scale_layer";
window_title = _("Scale Layer");
help_page = "layers/dialogs/scale_layer.html";
frame = gtk_frame_new (_("Size"));
break;
case ResizeImage:
wmclass = "scale_image";
window_title = _("Scale Image");
help_page = "dialogs/scale_image.html";
frame = gtk_frame_new (_("Pixel Dimensions"));
break;
}
break;
case ResizeWidget:
switch (target)
{
case ResizeLayer:
wmclass = "resize_layer";
window_title = _("Set Layer Boundary Size");
help_page = "layers/dialogs/layer_boundary_size.html";
break;
case ResizeImage:
wmclass = "resize_image";
window_title = _("Set Canvas Size");
help_page = "dialogs/set_canvas_size.html";
break;
}
frame = gtk_frame_new (_("Size"));
break;
}
resize->resize_shell =
gimp_dialog_new (window_title, wmclass,
gimp_standard_help_func, help_page,
GTK_WIN_POS_MOUSE,
FALSE, FALSE, TRUE,
_("OK"), ok_cb,
user_data, NULL, NULL, TRUE, FALSE,
_("Reset"), reset_callback,
resize, NULL, NULL, FALSE, FALSE,
_("Cancel"), cancel_cb ? cancel_cb : gtk_widget_destroy,
cancel_cb ? user_data : NULL,
cancel_cb ? NULL : (gpointer) 1,
NULL, FALSE, TRUE,
NULL);
gtk_signal_connect_object (GTK_OBJECT (resize->resize_shell), "destroy",
GTK_SIGNAL_FUNC (g_free),
(GtkObject *) private);
gtk_signal_connect_object (GTK_OBJECT (resize->resize_shell), "destroy",
GTK_SIGNAL_FUNC (g_free),
(GtkObject *) resize);
}
/* handle the image disappearing under our feet */
if (object && signal)
{
if (cancel_cb)
gtk_signal_connect (GTK_OBJECT (object), signal,
cancel_cb,
user_data);
else
gtk_signal_connect_object_while_alive
(GTK_OBJECT (object), signal,
GTK_SIGNAL_FUNC (gtk_widget_destroy),
GTK_OBJECT (resize->resize_shell));
}
/* the main vbox */
main_vbox = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (resize->resize_shell)->vbox),
main_vbox);
/* the pixel dimensions frame */
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
table = gtk_table_new (6, 2, FALSE);
gtk_container_set_border_width (GTK_CONTAINER (table), 2);
gtk_table_set_col_spacing (GTK_TABLE (table), 0, 4);
gtk_table_set_row_spacing (GTK_TABLE (table), 0, 4);
gtk_table_set_row_spacing (GTK_TABLE (table), 1, 4);
gtk_table_set_row_spacing (GTK_TABLE (table), 3, 4);
gtk_table_set_row_spacing (GTK_TABLE (table), 4, 2);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
/* the original width & height labels */
label = gtk_label_new (_("Original Width:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
label = gtk_label_new (_("Height:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
private->orig_width_label = gtk_label_new ("");
gtk_misc_set_alignment (GTK_MISC ( private->orig_width_label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (table), private->orig_width_label, 1, 2, 0, 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show ( private->orig_width_label);
private->orig_height_label = gtk_label_new ("");
gtk_misc_set_alignment (GTK_MISC (private->orig_height_label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (table), private->orig_height_label, 1, 2, 1, 2,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (private->orig_height_label);
/* the new size labels */
label = gtk_label_new (_("New Width:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 2, 3,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
label = gtk_label_new (_("Height:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 3, 4,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
/* the new size sizeentry */
adjustment = gtk_adjustment_new (1, 1, 1, 1, 10, 1);
spinbutton = gtk_spin_button_new (GTK_ADJUSTMENT (adjustment), 1, 2);
gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinbutton),
GTK_SHADOW_NONE);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_widget_set_usize (spinbutton, 75, 0);
private->size_se =
gimp_size_entry_new (1, unit, "%a", TRUE, TRUE, FALSE, 75,
GIMP_SIZE_ENTRY_UPDATE_SIZE);
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (private->size_se),
GTK_SPIN_BUTTON (spinbutton), NULL);
gtk_table_attach_defaults (GTK_TABLE (private->size_se), spinbutton,
1, 2, 0, 1);
gtk_widget_show (spinbutton);
gtk_table_attach (GTK_TABLE (table), private->size_se, 1, 2, 2, 4,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (private->size_se);
if (dot_for_dot)
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (private->size_se),
GIMP_UNIT_PIXEL);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->size_se), 0,
resolution_x, FALSE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->size_se), 1,
resolution_y, FALSE);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (private->size_se), 0,
GIMP_MIN_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (private->size_se), 1,
GIMP_MIN_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (private->size_se), 0, 0, width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (private->size_se), 1, 0, height);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->size_se), 0, width);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->size_se), 1, height);
gtk_signal_connect (GTK_OBJECT (private->size_se), "value_changed",
GTK_SIGNAL_FUNC (size_callback),
resize);
gtk_signal_connect (GTK_OBJECT (private->size_se), "unit_changed",
GTK_SIGNAL_FUNC (orig_labels_update),
resize);
/* initialize the original width & height labels */
orig_labels_update (private->size_se, resize);
/* the scale ratio labels */
label = gtk_label_new (_("Ratio X:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 4, 5,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
label = gtk_label_new (_("Y:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 5, 6,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
/* a table for the spinbuttons and the chainbutton */
abox = gtk_alignment_new (0.0, 0.5, 0.0, 1.0);
table2 = gtk_table_new (2, 2, FALSE);
gtk_table_set_col_spacing (GTK_TABLE (table2), 0, 2);
gtk_table_set_row_spacing (GTK_TABLE (table2), 0, 2);
gtk_container_add (GTK_CONTAINER (abox), table2);
gtk_table_attach (GTK_TABLE (table), abox, 1, 2, 4, 6,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (abox);
/* the scale ratio spinbuttons */
private->ratio_x_adj =
gtk_adjustment_new (resize->ratio_x,
(double) GIMP_MIN_IMAGE_SIZE / (double) resize->width,
(double) GIMP_MAX_IMAGE_SIZE / (double) resize->width,
0.01, 0.1, 1);
spinbutton = gtk_spin_button_new (GTK_ADJUSTMENT (private->ratio_x_adj), 1, 4);
gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinbutton),
GTK_SHADOW_NONE);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_widget_set_usize (spinbutton, 75, 0);
gtk_table_attach_defaults (GTK_TABLE (table2), spinbutton, 0, 1, 0, 1);
gtk_signal_connect (GTK_OBJECT ( private->ratio_x_adj), "value_changed",
(GtkSignalFunc) ratio_callback,
resize);
gtk_widget_show (spinbutton);
private->ratio_y_adj =
gtk_adjustment_new (resize->ratio_y,
(double) GIMP_MIN_IMAGE_SIZE / (double) resize->height,
(double) GIMP_MAX_IMAGE_SIZE / (double) resize->height,
0.01, 0.1, 1);
spinbutton = gtk_spin_button_new (GTK_ADJUSTMENT (private->ratio_y_adj), 1, 4);
gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinbutton),
GTK_SHADOW_NONE);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_widget_set_usize (spinbutton, 75, 0);
gtk_table_attach_defaults (GTK_TABLE (table2), spinbutton, 0, 1, 1, 2);
gtk_signal_connect (GTK_OBJECT ( private->ratio_y_adj), "value_changed",
(GtkSignalFunc) ratio_callback,
resize);
gtk_widget_show (spinbutton);
/* the constrain ratio chainbutton */
private->constrain = gimp_chain_button_new (GIMP_CHAIN_RIGHT);
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (private->constrain), TRUE);
gtk_table_attach_defaults (GTK_TABLE (table2), private->constrain, 1, 2, 0, 2);
gtk_widget_show (private->constrain);
gtk_widget_show (table2);
gtk_widget_show (table);
gtk_widget_show (vbox);
/* the offset frame */
if (type == ResizeWidget)
{
frame = gtk_frame_new (_("Offset"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), abox, FALSE, FALSE, 0);
/* the offset sizeentry */
adjustment = gtk_adjustment_new (1, 1, 1, 1, 10, 1);
spinbutton = gtk_spin_button_new (GTK_ADJUSTMENT (adjustment), 1, 2);
gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinbutton),
GTK_SHADOW_NONE);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_widget_set_usize (spinbutton, 75, 0);
private->offset_se =
gimp_size_entry_new (1, unit, "%a", TRUE, FALSE, FALSE, 75,
GIMP_SIZE_ENTRY_UPDATE_SIZE);
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (private->offset_se),
GTK_SPIN_BUTTON (spinbutton), NULL);
gtk_table_attach_defaults (GTK_TABLE (private->offset_se), spinbutton,
1, 2, 0, 1);
gtk_table_set_col_spacing (GTK_TABLE (private->offset_se), 0, 4);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (private->offset_se),
_("X:"), 0, 0, 1.0);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (private->offset_se),
_("Y:"), 1, 0, 1.0);
gtk_widget_show (spinbutton);
gtk_container_add (GTK_CONTAINER (abox), private->offset_se);
gtk_widget_show (private->offset_se);
if (dot_for_dot)
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (private->offset_se),
GIMP_UNIT_PIXEL);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->offset_se), 0,
resolution_x, FALSE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->offset_se), 1,
resolution_y, FALSE);
gimp_size_entry_set_refval_boundaries
(GIMP_SIZE_ENTRY (private->offset_se), 0, 0, 0);
gimp_size_entry_set_refval_boundaries
(GIMP_SIZE_ENTRY (private->offset_se), 1, 0, 0);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset_se), 0, 0);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset_se), 1, 0);
gtk_signal_connect (GTK_OBJECT (private->offset_se), "value_changed",
GTK_SIGNAL_FUNC (offset_update),
resize);
gtk_widget_show (abox);
/* frame to hold drawing area */
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), abox, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (abox), frame);
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",
GTK_SIGNAL_FUNC (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 (abox);
gtk_widget_show (vbox);
}
/* the resolution stuff */
if ((type == ScaleWidget) && (target == ResizeImage))
{
frame = gtk_frame_new (_("Print Size & Display Unit"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
table = gtk_table_new (4, 2, FALSE);
gtk_table_set_col_spacing (GTK_TABLE (table), 0, 4);
gtk_table_set_row_spacing (GTK_TABLE (table), 1, 4);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
/* the print size labels */
label = gtk_label_new (_("New Width:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
label = gtk_label_new (_("Height:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
/* the print size sizeentry */
abox = gtk_alignment_new (0.0, 0.5, 0.0, 1.0);
adjustment = gtk_adjustment_new (1, 1, 1, 1, 10, 1);
spinbutton = gtk_spin_button_new (GTK_ADJUSTMENT (adjustment), 1, 2);
gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinbutton),
GTK_SHADOW_NONE);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_widget_set_usize (spinbutton, 75, 0);
gtk_container_add (GTK_CONTAINER (abox), spinbutton);
gtk_widget_show (spinbutton);
gtk_table_attach (GTK_TABLE (table), abox, 1, 2, 0, 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (abox);
abox = gtk_alignment_new (0.0, 0.5, 0.0, 1.0);
private->printsize_se =
gimp_size_entry_new (1, unit, "%a", FALSE, FALSE, FALSE, 75,
GIMP_SIZE_ENTRY_UPDATE_SIZE);
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (private->printsize_se),
GTK_SPIN_BUTTON (spinbutton), NULL);
gtk_container_add (GTK_CONTAINER (abox), private->printsize_se);
gtk_table_attach (GTK_TABLE (table), abox, 1, 2, 1, 2,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (private->printsize_se);
gtk_widget_show (abox);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->printsize_se),
0, resolution_x, FALSE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->printsize_se),
1, resolution_y, FALSE);
gimp_size_entry_set_refval_boundaries
(GIMP_SIZE_ENTRY (private->printsize_se),
0, GIMP_MIN_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE);
gimp_size_entry_set_refval_boundaries
(GIMP_SIZE_ENTRY (private->printsize_se),
1, GIMP_MIN_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->printsize_se),
0, resize->width);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->printsize_se),
1, resize->height);
gtk_signal_connect (GTK_OBJECT (private->printsize_se), "value_changed",
GTK_SIGNAL_FUNC (printsize_update),
resize);
gtk_signal_connect (GTK_OBJECT (private->printsize_se), "unit_changed",
GTK_SIGNAL_FUNC (unit_update),
resize);
/* the resolution labels */
label = gtk_label_new (_("Resolution X:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 2, 3,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
label = gtk_label_new (_("Y:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 3, 4,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
/* the resolution sizeentry */
adjustment = gtk_adjustment_new (1, 1, 1, 1, 10, 1);
spinbutton = gtk_spin_button_new (GTK_ADJUSTMENT (adjustment), 1, 2);
gtk_spin_button_set_shadow_type (GTK_SPIN_BUTTON (spinbutton),
GTK_SHADOW_NONE);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_widget_set_usize (spinbutton, 75, 0);
private->resolution_se =
gimp_size_entry_new (1, default_resolution_units, _("pixels/%a"),
FALSE, FALSE, FALSE, 75,
GIMP_SIZE_ENTRY_UPDATE_RESOLUTION);
gtk_table_set_col_spacing (GTK_TABLE (private->resolution_se), 1, 2);
gtk_table_set_col_spacing (GTK_TABLE (private->resolution_se), 2, 2);
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (private->resolution_se),
GTK_SPIN_BUTTON (spinbutton), NULL);
gtk_table_attach_defaults (GTK_TABLE (private->resolution_se), spinbutton,
1, 2, 0, 1);
gtk_widget_show (spinbutton);
gtk_table_attach (GTK_TABLE (table), private->resolution_se, 1, 2, 2, 4,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (private->resolution_se);
gimp_size_entry_set_refval_boundaries
(GIMP_SIZE_ENTRY (private->resolution_se),
0, GIMP_MIN_RESOLUTION, GIMP_MAX_RESOLUTION);
gimp_size_entry_set_refval_boundaries
(GIMP_SIZE_ENTRY (private->resolution_se),
1, GIMP_MIN_RESOLUTION, GIMP_MAX_RESOLUTION);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->resolution_se),
0, resize->resolution_x);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->resolution_se),
1, resize->resolution_y);
gtk_signal_connect (GTK_OBJECT (private->resolution_se), "value_changed",
GTK_SIGNAL_FUNC (resolution_callback),
resize);
/* the resolution chainbutton */
private->equal_res = gimp_chain_button_new (GIMP_CHAIN_RIGHT);
gimp_chain_button_set_active
(GIMP_CHAIN_BUTTON (private->equal_res),
ABS (resize->resolution_x - resize->resolution_y) < 1e-5);
gtk_table_attach_defaults (GTK_TABLE (private->resolution_se),
private->equal_res, 2, 3, 0, 2);
gtk_widget_show (private->equal_res);
gtk_widget_show (table);
gtk_widget_show (vbox);
}
gtk_widget_show (main_vbox);
/* finally, activate the first entry */
gimp_size_entry_grab_focus (GIMP_SIZE_ENTRY (private->size_se));
return resize;
}
static void
resize_draw (Resize *resize)
{
GtkWidget *widget;
ResizePrivate *private;
gint aw, ah;
gint x, y;
gint 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 = (gdouble) DRAWING_AREA_SIZE / (gdouble) w;
else
private->ratio = (gdouble) DRAWING_AREA_SIZE / (gdouble) h;
aw = (gint) (private->ratio * w);
ah = (gint) (private->ratio * h);
if (aw != private->area_width || ah != private->area_height)
{
private->area_width = aw;
private->area_height = ah;
gtk_drawing_area_size (GTK_DRAWING_AREA (private->drawing_area), aw, ah);
}
if (private->old_width <= resize->width)
x = private->ratio * resize->offset_x;
else
x = private->ratio * (resize->offset_x + private->old_width - resize->width);
if (private->old_height <= resize->height)
y = private->ratio * resize->offset_y;
else
y = private->ratio * (resize->offset_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 gint
resize_bound_off_x (Resize *resize,
gint 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 gint
resize_bound_off_y (Resize *resize,
gint 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
orig_labels_update (GtkWidget *widget,
gpointer data)
{
Resize *resize;
ResizePrivate *private;
GimpUnit unit;
gchar format_buf[16];
gchar buf[32];
static GimpUnit label_unit = GIMP_UNIT_PIXEL;
resize = (Resize *) data;
private = (ResizePrivate *) resize->private_part;
unit = gimp_size_entry_get_unit (GIMP_SIZE_ENTRY (widget));
if (unit != GIMP_UNIT_PERCENT)
label_unit = unit;
if (label_unit) /* unit != GIMP_UNIT_PIXEL */
{
gdouble unit_factor = gimp_unit_get_factor (label_unit);
g_snprintf (format_buf, sizeof (format_buf), "%%.%df %s",
gimp_unit_get_digits (label_unit) + 1,
gimp_unit_get_symbol (label_unit));
g_snprintf (buf, sizeof (buf), format_buf,
private->old_width * unit_factor / private->old_res_x);
gtk_label_set_text (GTK_LABEL (private->orig_width_label), buf);
g_snprintf (buf, sizeof (buf), format_buf,
private->old_height * unit_factor / private->old_res_y);
gtk_label_set_text (GTK_LABEL (private->orig_height_label), buf);
}
else /* unit == GIMP_UNIT_PIXEL */
{
g_snprintf (buf, sizeof (buf), "%d", private->old_width);
gtk_label_set_text (GTK_LABEL (private->orig_width_label), buf);
g_snprintf (buf, sizeof (buf), "%d", private->old_height);
gtk_label_set_text (GTK_LABEL (private->orig_height_label), buf);
}
}
static void
unit_update (GtkWidget *widget,
gpointer data)
{
Resize *resize;
resize = (Resize *) data;
resize->unit = gimp_size_entry_get_unit (GIMP_SIZE_ENTRY (widget));
}
static void
offset_update (GtkWidget *widget,
gpointer data)
{
Resize *resize;
ResizePrivate *private;
gint offset_x;
gint offset_y;
resize = (Resize *) data;
private = (ResizePrivate *) resize->private_part;
offset_x =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->offset_se), 0));
offset_x = resize_bound_off_x (resize, offset_x);
offset_y =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->offset_se), 1));
offset_y = resize_bound_off_y (resize, offset_y);
if ((offset_x != resize->offset_x) ||
(offset_y != resize->offset_y))
{
resize->offset_x = offset_x;
resize->offset_y = offset_y;
resize_draw (resize);
}
}
/*
* Callback function for "Reset" button.
* Data must be a pointer pointer to a Resize structure.
*/
static void
reset_callback (GtkWidget *widget,
gpointer data)
{
Resize *resize;
ResizePrivate *private;
resize = (Resize *)data;
private = (ResizePrivate *)resize->private_part;
/* restore size and ratio settings */
size_update (resize, private->old_width, private->old_height, 1.0, 1.0);
if ((resize->type == ScaleWidget) && (resize->target == ResizeImage))
{
/* restore resolution settings */
resolution_update (resize, private->old_res_x, private->old_res_y);
}
}
static void
size_callback (GtkWidget *widget,
gpointer data)
{
Resize *resize;
ResizePrivate *private;
gdouble width;
gdouble height;
gdouble ratio_x;
gdouble ratio_y;
resize = (Resize *) data;
private = (ResizePrivate *) resize->private_part;
width = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->size_se), 0);
height = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->size_se), 1);
ratio_x = width / (gdouble) private->old_width;
ratio_y = height / (gdouble) private->old_height;
if (gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (private->constrain)))
{
if (ratio_x != resize->ratio_x)
{
ratio_y = ratio_x;
height = (gdouble) private->old_height * ratio_y;
height = CLAMP (height, GIMP_MIN_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE);
}
else
{
ratio_x = ratio_y;
width = (gdouble) private->old_width * ratio_x;
width = CLAMP (width, GIMP_MIN_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE);
}
}
size_update (resize, width, height, ratio_x, ratio_y);
}
static void
ratio_callback (GtkWidget *widget,
gpointer data)
{
Resize *resize;
ResizePrivate *private;
gdouble width;
gdouble height;
gdouble ratio_x;
gdouble ratio_y;
resize = (Resize *) data;
private = (ResizePrivate *) resize->private_part;
width = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->size_se), 0);
height = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->size_se), 1);
ratio_x = GTK_ADJUSTMENT (private->ratio_x_adj)->value;
ratio_y = GTK_ADJUSTMENT (private->ratio_y_adj)->value;
if (gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (private->constrain)))
{
if (ratio_x != resize->ratio_x)
{
ratio_y = ratio_x;
}
else
{
ratio_x = ratio_y;
}
}
width = CLAMP (private->old_width * ratio_x,
GIMP_MIN_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE);
height = CLAMP (private->old_height * ratio_y,
GIMP_MIN_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE);
size_update (resize, width, height, ratio_x, ratio_y);
}
static void
size_update (Resize *resize,
double width,
double height,
double ratio_x,
double ratio_y)
{
ResizePrivate *private;
private = (ResizePrivate *) resize->private_part;
resize->width = (gint) (width + 0.5);
resize->height = (gint) (height + 0.5);
resize->ratio_x = ratio_x;
resize->ratio_y = ratio_y;
gtk_signal_handler_block_by_data (GTK_OBJECT (private->size_se), resize);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->size_se),
0, width);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->size_se),
1, height);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->size_se), resize);
gtk_signal_handler_block_by_data (GTK_OBJECT (private->ratio_x_adj), resize);
gtk_signal_handler_block_by_data (GTK_OBJECT (private->ratio_y_adj), resize);
gtk_adjustment_set_value (GTK_ADJUSTMENT (private->ratio_x_adj), ratio_x);
gtk_adjustment_set_value (GTK_ADJUSTMENT (private->ratio_y_adj), ratio_y);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->ratio_x_adj), resize);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->ratio_y_adj), resize);
if (resize->type == ResizeWidget)
{
resize->offset_x = resize_bound_off_x (resize, resize->offset_x);
resize->offset_y = resize_bound_off_y (resize, resize->offset_y);
gimp_size_entry_set_refval_boundaries
(GIMP_SIZE_ENTRY (private->offset_se), 0,
MIN (0, resize->width - private->old_width),
MAX (0, resize->width - private->old_width));
gimp_size_entry_set_refval_boundaries
(GIMP_SIZE_ENTRY (private->offset_se), 1,
MIN (0, resize->height - private->old_height),
MAX (0, resize->height - private->old_height));
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset_se),
0, resize->offset_x);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset_se),
1, resize->offset_y);
}
if ((resize->type == ScaleWidget) && (resize->target == ResizeImage))
{
gtk_signal_handler_block_by_data (GTK_OBJECT (private->printsize_se),
resize);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->printsize_se),
0, width);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->printsize_se),
1, height);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->printsize_se),
resize);
}
resize_draw (resize);
}
static void
printsize_update (GtkWidget *widget,
gpointer data)
{
Resize *resize;
ResizePrivate *private;
gdouble width;
gdouble height;
gdouble print_width;
gdouble print_height;
gdouble res_x;
gdouble res_y;
resize = (Resize *) data;
private = (ResizePrivate *) resize->private_part;
width = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->size_se), 0);
height = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->size_se), 1);
print_width =
gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->printsize_se), 0);
print_height =
gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->printsize_se), 1);
/* this is tricky: we use the sizes in pixels (which is otherwise
* meaningless for the "print size" widgets) to calculate the new
* resolution.
*/
res_x = CLAMP (resize->resolution_x * width / print_width,
GIMP_MIN_RESOLUTION, GIMP_MAX_RESOLUTION);
res_y = CLAMP (resize->resolution_y * height / print_height,
GIMP_MIN_RESOLUTION, GIMP_MAX_RESOLUTION);
if (gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (private->equal_res)))
{
if (res_x != resize->resolution_x)
{
res_y = res_x;
}
else
{
res_x = res_y;
}
}
resize->resolution_x = res_x;
resize->resolution_y = res_y;
gtk_signal_handler_block_by_data (GTK_OBJECT (private->resolution_se), resize);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->resolution_se),
0, res_x);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->resolution_se),
1, res_y);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->resolution_se),
resize);
gtk_signal_handler_block_by_data (GTK_OBJECT (private->size_se), resize);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->size_se),
0, res_x, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->size_se),
1, res_y, TRUE);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->size_se),
0, width);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->size_se),
1, height);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->size_se), resize);
gtk_signal_handler_block_by_data (GTK_OBJECT (private->printsize_se), resize);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->printsize_se),
0, res_x, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->printsize_se),
1, res_y, TRUE);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->printsize_se),
0, width);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->printsize_se),
1, height);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->printsize_se),
resize);
}
/* Callback for resolution change. */
static void
resolution_callback (GtkWidget *widget,
gpointer data)
{
Resize *resize;
ResizePrivate *private;
gdouble res_x;
gdouble res_y;
resize = (Resize *) data;
private = (ResizePrivate *) resize->private_part;
res_x =
gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->resolution_se), 0);
res_y =
gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (private->resolution_se), 1);
if (gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (private->equal_res)))
{
if (res_x != resize->resolution_x)
{
res_y = res_x;
}
else
{
res_x = res_y;
}
}
resolution_update (resize, res_x, res_y);
}
/* Update widgets with resolution settings found in given Resize struct. */
static void
resolution_update (Resize *resize,
gdouble res_x,
gdouble res_y)
{
ResizePrivate *private;
private = (ResizePrivate *) resize->private_part;
resize->resolution_x = res_x;
resize->resolution_y = res_y;
gtk_signal_handler_block_by_data (GTK_OBJECT (private->resolution_se), resize);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->resolution_se),
0, res_x);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->resolution_se),
1, res_y);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->resolution_se),
resize);
gtk_signal_handler_block_by_data (GTK_OBJECT (private->size_se), resize);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->size_se),
0, res_x, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->size_se),
1, res_y, TRUE);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->size_se), resize);
gtk_signal_handler_block_by_data (GTK_OBJECT (private->printsize_se), resize);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->printsize_se),
0, res_x, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (private->printsize_se),
1, res_y, TRUE);
gtk_signal_handler_unblock_by_data (GTK_OBJECT (private->printsize_se),
resize);
}
static gint
resize_events (GtkWidget *widget,
GdkEvent *event)
{
Resize *resize;
ResizePrivate *private;
gint dx, dy;
gint off_x, off_y;
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->offset_x;
private->orig_y = resize->offset_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);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset_se),
0, off_x);
/* 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);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (private->offset_se),
1, off_y);
gtk_signal_emit_by_name (GTK_OBJECT (private->offset_se), "value_changed",
resize);
break;
case GDK_BUTTON_RELEASE:
gdk_pointer_ungrab (event->button.time);
break;
default:
break;
}
return FALSE;
}
/*** Resize sanity checks ***/
void
resize_scale_implement (ImageResize *image_scale)
{
GImage *gimage = NULL;
gboolean rulers_flush = FALSE;
gboolean display_flush = FALSE; /* this is a bit ugly:
we hijack the flush variable
to check if an undo_group was
already started */
g_assert (image_scale != NULL);
gimage = image_scale->gimage;
g_assert (gimage != NULL);
if (image_scale->resize->resolution_x != gimage->xresolution ||
image_scale->resize->resolution_y != gimage->yresolution)
{
undo_push_group_start (gimage, IMAGE_SCALE_UNDO);
gimage_set_resolution (gimage,
image_scale->resize->resolution_x,
image_scale->resize->resolution_y);
rulers_flush = TRUE;
display_flush = TRUE;
}
if (image_scale->resize->unit != gimage->unit)
{
if (!display_flush)
undo_push_group_start (gimage, IMAGE_SCALE_UNDO);
gimage_set_unit (gimage, image_scale->resize->unit);
gdisplays_setup_scale (gimage);
gdisplays_resize_cursor_label (gimage);
rulers_flush = TRUE;
display_flush = TRUE;
}
if (image_scale->resize->width != gimage->width ||
image_scale->resize->height != gimage->height)
{
if (image_scale->resize->width > 0 &&
image_scale->resize->height > 0)
{
if (!display_flush)
undo_push_group_start (gimage, IMAGE_SCALE_UNDO);
gimage_scale (gimage,
image_scale->resize->width,
image_scale->resize->height);
display_flush = TRUE;
}
else
{
g_message (_("Scale Error: Both width and height must be "
"greater than zero."));
return;
}
}
if (rulers_flush)
{
gdisplays_setup_scale (gimage);
gdisplays_resize_cursor_label (gimage);
}
if (display_flush)
{
undo_push_group_end (gimage);
gdisplays_flush ();
}
}
static void
resize_scale_warn_callback (GtkWidget *widget,
gboolean do_scale,
gpointer data)
{
ImageResize *image_scale = NULL;
GImage *gimage = NULL;
g_assert (data != NULL);
image_scale = (ImageResize *) data;
gimage = image_scale->gimage;
g_assert (gimage != NULL);
if (do_scale == TRUE) /* User doesn't mind losing layers... */
{
resize_scale_implement (image_scale);
gtk_widget_destroy (image_scale->resize->resize_shell);
}
else
{
gtk_widget_set_sensitive (image_scale->resize->resize_shell, TRUE);
}
}
gboolean
resize_check_layer_scaling (ImageResize *image_scale)
{
/* Inventory the layer list in gimage and return TRUE if, after
* scaling, they all retain positive x and y pixel dimensions.
* Otherwise, put up a modal boolean dialog box and ask the user if
* she wishes to proceed. Return FALSE in the dialog case; the dialog box
* callback will complete the job if the user really wants to
* proceed. <02/22/2000 gosgood@idt.net>
*/
gboolean success = FALSE;
GImage *gimage = NULL;
GSList *list = NULL;
Layer *layer = NULL;
GtkWidget *dialog = NULL;
g_assert (image_scale != NULL);
if (NULL != (gimage = image_scale->gimage))
{
/* Step through layers; test scaled dimensions. */
success = TRUE;
list = gimage->layers;
while (list && success == TRUE)
{
layer = (Layer *)list->data;
success = layer_check_scaling (layer,
image_scale->resize->width,
image_scale->resize->height);
list = g_slist_next (list);
}
/* Warn user on failure */
if (success == FALSE)
{
dialog =
gimp_query_boolean_box (_("Layer Too Small"),
gimp_standard_help_func,
"dialogs/scale_layer_warn.html",
FALSE,
_("The chosen image size will shrink\n"
"some layers completely away.\n"
"Is this what you want?"),
_("OK"), _("Cancel"),
GTK_OBJECT (image_scale->resize->resize_shell),
"destroy",
resize_scale_warn_callback,
image_scale);
gtk_widget_show (dialog);
}
}
return success;
}
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