mirror of https://github.com/GNOME/gimp.git
506 lines
16 KiB
C
506 lines
16 KiB
C
/* 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 "libgimpmath/gimpmath.h"
|
|
#include "libgimpbase/gimpbase.h"
|
|
#include "libgimpwidgets/gimpwidgets.h"
|
|
|
|
#include "tools-types.h"
|
|
|
|
#ifdef __GNUC__
|
|
#warning FIXME #include "gui/gui-types.h"
|
|
#endif
|
|
#include "gui/gui-types.h"
|
|
|
|
#include "core/gimpimage.h"
|
|
#include "core/gimpdrawable-transform.h"
|
|
#include "core/gimpdrawable-transform-utils.h"
|
|
#include "core/gimptoolinfo.h"
|
|
|
|
#include "display/gimpdisplay.h"
|
|
#include "display/gimpdisplayshell.h"
|
|
|
|
#include "gui/info-dialog.h"
|
|
|
|
#include "gimpscaletool.h"
|
|
#include "gimptransformoptions.h"
|
|
|
|
#include "gimp-intl.h"
|
|
|
|
|
|
/* local function prototypes */
|
|
|
|
static void gimp_scale_tool_class_init (GimpScaleToolClass *klass);
|
|
|
|
static void gimp_scale_tool_init (GimpScaleTool *sc_tool);
|
|
|
|
static void gimp_scale_tool_dialog (GimpTransformTool *tr_tool);
|
|
static void gimp_scale_tool_prepare (GimpTransformTool *tr_tool,
|
|
GimpDisplay *gdisp);
|
|
static void gimp_scale_tool_motion (GimpTransformTool *tr_tool,
|
|
GimpDisplay *gdisp);
|
|
static void gimp_scale_tool_recalc (GimpTransformTool *tr_tool,
|
|
GimpDisplay *gdisp);
|
|
|
|
static void gimp_scale_tool_info_update (GimpTransformTool *tr_tool);
|
|
|
|
static void gimp_scale_tool_size_changed (GtkWidget *widget,
|
|
GimpTransformTool *tr_tool);
|
|
static void gimp_scale_tool_unit_changed (GtkWidget *widget,
|
|
GimpTransformTool *tr_tool);
|
|
|
|
|
|
/* storage for information dialog fields */
|
|
static gchar orig_width_buf[MAX_INFO_BUF];
|
|
static gchar orig_height_buf[MAX_INFO_BUF];
|
|
static gdouble size_vals[2];
|
|
static gchar x_ratio_buf[MAX_INFO_BUF];
|
|
static gchar y_ratio_buf[MAX_INFO_BUF];
|
|
|
|
/* needed for original size unit update */
|
|
static GtkWidget *sizeentry = NULL;
|
|
|
|
static GimpTransformToolClass *parent_class = NULL;
|
|
|
|
|
|
/* public functions */
|
|
|
|
void
|
|
gimp_scale_tool_register (GimpToolRegisterCallback callback,
|
|
gpointer data)
|
|
{
|
|
(* callback) (GIMP_TYPE_SCALE_TOOL,
|
|
GIMP_TYPE_TRANSFORM_OPTIONS,
|
|
gimp_transform_options_gui,
|
|
FALSE,
|
|
"gimp-scale-tool",
|
|
_("Scale"),
|
|
_("Scale the layer or selection"),
|
|
N_("/Tools/Transform Tools/Scale"), "<shift>T",
|
|
NULL, "tools/transform.html",
|
|
GIMP_STOCK_TOOL_SCALE,
|
|
data);
|
|
}
|
|
|
|
GType
|
|
gimp_scale_tool_get_type (void)
|
|
{
|
|
static GType tool_type = 0;
|
|
|
|
if (! tool_type)
|
|
{
|
|
static const GTypeInfo tool_info =
|
|
{
|
|
sizeof (GimpScaleToolClass),
|
|
(GBaseInitFunc) NULL,
|
|
(GBaseFinalizeFunc) NULL,
|
|
(GClassInitFunc) gimp_scale_tool_class_init,
|
|
NULL, /* class_finalize */
|
|
NULL, /* class_data */
|
|
sizeof (GimpScaleTool),
|
|
0, /* n_preallocs */
|
|
(GInstanceInitFunc) gimp_scale_tool_init,
|
|
};
|
|
|
|
tool_type = g_type_register_static (GIMP_TYPE_TRANSFORM_TOOL,
|
|
"GimpScaleTool",
|
|
&tool_info, 0);
|
|
}
|
|
|
|
return tool_type;
|
|
}
|
|
|
|
|
|
/* private functions */
|
|
|
|
static void
|
|
gimp_scale_tool_class_init (GimpScaleToolClass *klass)
|
|
{
|
|
GimpTransformToolClass *trans_class;
|
|
|
|
trans_class = GIMP_TRANSFORM_TOOL_CLASS (klass);
|
|
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
|
|
trans_class->dialog = gimp_scale_tool_dialog;
|
|
trans_class->prepare = gimp_scale_tool_prepare;
|
|
trans_class->motion = gimp_scale_tool_motion;
|
|
trans_class->recalc = gimp_scale_tool_recalc;
|
|
}
|
|
|
|
static void
|
|
gimp_scale_tool_init (GimpScaleTool *scale_tool)
|
|
{
|
|
GimpTool *tool;
|
|
GimpTransformTool *tr_tool;
|
|
|
|
tool = GIMP_TOOL (scale_tool);
|
|
tr_tool = GIMP_TRANSFORM_TOOL (scale_tool);
|
|
|
|
gimp_tool_control_set_tool_cursor (tool->control, GIMP_RESIZE_TOOL_CURSOR);
|
|
|
|
tr_tool->shell_desc = _("Scaling Information");
|
|
tr_tool->progress_text = _("Scaling...");
|
|
}
|
|
|
|
static void
|
|
gimp_scale_tool_dialog (GimpTransformTool *tr_tool)
|
|
{
|
|
GtkWidget *spinbutton;
|
|
|
|
info_dialog_add_label (tr_tool->info_dialog,
|
|
_("Original Width:"),
|
|
orig_width_buf);
|
|
info_dialog_add_label (tr_tool->info_dialog,
|
|
_("Height:"),
|
|
orig_height_buf);
|
|
|
|
spinbutton = info_dialog_add_spinbutton (tr_tool->info_dialog,
|
|
_("Current Width:"),
|
|
NULL, -1, 1, 1, 10, 1, 1, 2,
|
|
NULL, NULL);
|
|
sizeentry = info_dialog_add_sizeentry (tr_tool->info_dialog,
|
|
_("Height:"),
|
|
size_vals, 1,
|
|
GIMP_UNIT_PIXEL, "%a",
|
|
TRUE, TRUE, FALSE,
|
|
GIMP_SIZE_ENTRY_UPDATE_SIZE,
|
|
G_CALLBACK (gimp_scale_tool_size_changed),
|
|
tr_tool);
|
|
g_signal_connect (sizeentry, "unit_changed",
|
|
G_CALLBACK (gimp_scale_tool_unit_changed),
|
|
tr_tool);
|
|
|
|
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (sizeentry),
|
|
GTK_SPIN_BUTTON (spinbutton), NULL);
|
|
|
|
info_dialog_add_label (tr_tool->info_dialog,
|
|
_("Scale Ratio X:"),
|
|
x_ratio_buf);
|
|
info_dialog_add_label (tr_tool->info_dialog,
|
|
_("Y:"),
|
|
y_ratio_buf);
|
|
|
|
gtk_table_set_row_spacing (GTK_TABLE (tr_tool->info_dialog->info_table),
|
|
1, 4);
|
|
gtk_table_set_row_spacing (GTK_TABLE (tr_tool->info_dialog->info_table),
|
|
2, 0);
|
|
}
|
|
|
|
static void
|
|
gimp_scale_tool_prepare (GimpTransformTool *tr_tool,
|
|
GimpDisplay *gdisp)
|
|
{
|
|
size_vals[0] = tr_tool->x2 - tr_tool->x1;
|
|
size_vals[1] = tr_tool->y2 - tr_tool->y1;
|
|
|
|
g_signal_handlers_block_by_func (sizeentry,
|
|
gimp_scale_tool_size_changed,
|
|
tr_tool);
|
|
g_signal_handlers_block_by_func (sizeentry,
|
|
gimp_scale_tool_unit_changed,
|
|
tr_tool);
|
|
|
|
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (sizeentry),
|
|
gdisp->gimage->unit);
|
|
|
|
if (GIMP_DISPLAY_SHELL (gdisp->shell)->dot_for_dot)
|
|
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (sizeentry), GIMP_UNIT_PIXEL);
|
|
|
|
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (sizeentry), 0,
|
|
gdisp->gimage->xresolution, FALSE);
|
|
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (sizeentry), 1,
|
|
gdisp->gimage->yresolution, FALSE);
|
|
|
|
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (sizeentry), 0,
|
|
GIMP_MIN_IMAGE_SIZE,
|
|
GIMP_MAX_IMAGE_SIZE);
|
|
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (sizeentry), 1,
|
|
GIMP_MIN_IMAGE_SIZE,
|
|
GIMP_MAX_IMAGE_SIZE);
|
|
|
|
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (sizeentry), 0,
|
|
0, size_vals[0]);
|
|
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (sizeentry), 1,
|
|
0, size_vals[1]);
|
|
|
|
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (sizeentry), 0,
|
|
size_vals[0]);
|
|
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (sizeentry), 1,
|
|
size_vals[1]);
|
|
|
|
g_signal_handlers_unblock_by_func (sizeentry,
|
|
gimp_scale_tool_size_changed,
|
|
tr_tool);
|
|
g_signal_handlers_unblock_by_func (sizeentry,
|
|
gimp_scale_tool_unit_changed,
|
|
tr_tool);
|
|
|
|
tr_tool->trans_info[X0] = (gdouble) tr_tool->x1;
|
|
tr_tool->trans_info[Y0] = (gdouble) tr_tool->y1;
|
|
tr_tool->trans_info[X1] = (gdouble) tr_tool->x2;
|
|
tr_tool->trans_info[Y1] = (gdouble) tr_tool->y2;
|
|
}
|
|
|
|
static void
|
|
gimp_scale_tool_motion (GimpTransformTool *tr_tool,
|
|
GimpDisplay *gdisp)
|
|
{
|
|
GimpTransformOptions *options;
|
|
gdouble ratio;
|
|
gdouble *x1;
|
|
gdouble *y1;
|
|
gdouble *x2;
|
|
gdouble *y2;
|
|
gint w, h;
|
|
gint dir_x, dir_y;
|
|
gdouble diff_x, diff_y;
|
|
|
|
options = GIMP_TRANSFORM_OPTIONS (GIMP_TOOL (tr_tool)->tool_info->tool_options);
|
|
|
|
diff_x = tr_tool->curx - tr_tool->lastx;
|
|
diff_y = tr_tool->cury - tr_tool->lasty;
|
|
|
|
switch (tr_tool->function)
|
|
{
|
|
case TRANSFORM_HANDLE_1:
|
|
x1 = &tr_tool->trans_info[X0];
|
|
y1 = &tr_tool->trans_info[Y0];
|
|
x2 = &tr_tool->trans_info[X1];
|
|
y2 = &tr_tool->trans_info[Y1];
|
|
dir_x = dir_y = 1;
|
|
break;
|
|
|
|
case TRANSFORM_HANDLE_2:
|
|
x1 = &tr_tool->trans_info[X1];
|
|
y1 = &tr_tool->trans_info[Y0];
|
|
x2 = &tr_tool->trans_info[X0];
|
|
y2 = &tr_tool->trans_info[Y1];
|
|
dir_x = -1;
|
|
dir_y = 1;
|
|
break;
|
|
|
|
case TRANSFORM_HANDLE_3:
|
|
x1 = &tr_tool->trans_info[X0];
|
|
y1 = &tr_tool->trans_info[Y1];
|
|
x2 = &tr_tool->trans_info[X1];
|
|
y2 = &tr_tool->trans_info[Y0];
|
|
dir_x = 1;
|
|
dir_y = -1;
|
|
break;
|
|
|
|
case TRANSFORM_HANDLE_4:
|
|
x1 = &tr_tool->trans_info[X1];
|
|
y1 = &tr_tool->trans_info[Y1];
|
|
x2 = &tr_tool->trans_info[X0];
|
|
y2 = &tr_tool->trans_info[Y0];
|
|
dir_x = dir_y = -1;
|
|
break;
|
|
|
|
case TRANSFORM_HANDLE_CENTER:
|
|
tr_tool->trans_info[X0] += diff_x;
|
|
tr_tool->trans_info[Y0] += diff_y;
|
|
tr_tool->trans_info[X1] += diff_x;
|
|
tr_tool->trans_info[Y1] += diff_y;
|
|
tr_tool->trans_info[X2] += diff_x;
|
|
tr_tool->trans_info[Y2] += diff_y;
|
|
tr_tool->trans_info[X3] += diff_x;
|
|
tr_tool->trans_info[Y3] += diff_y;
|
|
return;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/* if just the mod1 key is down, affect only the height */
|
|
if (options->constrain_2 && ! options->constrain_1)
|
|
{
|
|
diff_x = 0;
|
|
}
|
|
/* if just the control key is down, affect only the width */
|
|
else if (options->constrain_1 && ! options->constrain_2)
|
|
{
|
|
diff_y = 0;
|
|
}
|
|
|
|
*x1 += diff_x;
|
|
*y1 += diff_y;
|
|
|
|
if (dir_x > 0)
|
|
{
|
|
if (*x1 >= *x2) *x1 = *x2 - 1;
|
|
}
|
|
else
|
|
{
|
|
if (*x1 <= *x2) *x1 = *x2 + 1;
|
|
}
|
|
|
|
if (dir_y > 0)
|
|
{
|
|
if (*y1 >= *y2) *y1 = *y2 - 1;
|
|
}
|
|
else
|
|
{
|
|
if (*y1 <= *y2) *y1 = *y2 + 1;
|
|
}
|
|
|
|
/* if both the control key & mod1 keys are down,
|
|
* keep the aspect ratio intact
|
|
*/
|
|
if (options->constrain_1 && options->constrain_2)
|
|
{
|
|
ratio = ((gdouble) (tr_tool->x2 - tr_tool->x1) /
|
|
(gdouble) (tr_tool->y2 - tr_tool->y1));
|
|
|
|
w = ABS ((*x2 - *x1));
|
|
h = ABS ((*y2 - *y1));
|
|
|
|
if (w > h * ratio)
|
|
h = w / ratio;
|
|
else
|
|
w = h * ratio;
|
|
|
|
*y1 = *y2 - dir_y * h;
|
|
*x1 = *x2 - dir_x * w;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_scale_tool_recalc (GimpTransformTool *tr_tool,
|
|
GimpDisplay *gdisp)
|
|
{
|
|
gimp_drawable_transform_matrix_scale (tr_tool->x1,
|
|
tr_tool->y1,
|
|
tr_tool->x2,
|
|
tr_tool->y2,
|
|
tr_tool->trans_info[X0],
|
|
tr_tool->trans_info[Y0],
|
|
tr_tool->trans_info[X1],
|
|
tr_tool->trans_info[Y1],
|
|
tr_tool->transform);
|
|
|
|
/* transform the bounding box */
|
|
gimp_transform_tool_transform_bounding_box (tr_tool);
|
|
|
|
/* update the information dialog */
|
|
gimp_scale_tool_info_update (tr_tool);
|
|
}
|
|
|
|
static void
|
|
gimp_scale_tool_info_update (GimpTransformTool *tr_tool)
|
|
{
|
|
GimpTool *tool;
|
|
gdouble ratio_x, ratio_y;
|
|
gint x1, y1, x2, y2, x3, y3, x4, y4;
|
|
GimpUnit unit;
|
|
gdouble unit_factor;
|
|
gchar format_buf[16];
|
|
|
|
static GimpUnit label_unit = GIMP_UNIT_PIXEL;
|
|
|
|
tool = GIMP_TOOL (tr_tool);
|
|
|
|
unit = gimp_size_entry_get_unit (GIMP_SIZE_ENTRY (sizeentry));
|
|
|
|
/* Find original sizes */
|
|
x1 = tr_tool->x1;
|
|
y1 = tr_tool->y1;
|
|
x2 = tr_tool->x2;
|
|
y2 = tr_tool->y2;
|
|
|
|
if (unit != GIMP_UNIT_PERCENT)
|
|
label_unit = unit;
|
|
|
|
unit_factor = gimp_unit_get_factor (label_unit);
|
|
|
|
if (label_unit) /* unit != GIMP_UNIT_PIXEL */
|
|
{
|
|
g_snprintf (format_buf, sizeof (format_buf), "%%.%df %s",
|
|
gimp_unit_get_digits (label_unit) + 1,
|
|
gimp_unit_get_symbol (label_unit));
|
|
g_snprintf (orig_width_buf, MAX_INFO_BUF, format_buf,
|
|
(x2 - x1) * unit_factor / tool->gdisp->gimage->xresolution);
|
|
g_snprintf (orig_height_buf, MAX_INFO_BUF, format_buf,
|
|
(y2 - y1) * unit_factor / tool->gdisp->gimage->yresolution);
|
|
}
|
|
else /* unit == GIMP_UNIT_PIXEL */
|
|
{
|
|
g_snprintf (orig_width_buf, MAX_INFO_BUF, "%d", x2 - x1);
|
|
g_snprintf (orig_height_buf, MAX_INFO_BUF, "%d", y2 - y1);
|
|
}
|
|
|
|
/* Find current sizes */
|
|
x3 = (gint) tr_tool->trans_info[X0];
|
|
y3 = (gint) tr_tool->trans_info[Y0];
|
|
x4 = (gint) tr_tool->trans_info[X1];
|
|
y4 = (gint) tr_tool->trans_info[Y1];
|
|
|
|
size_vals[0] = x4 - x3;
|
|
size_vals[1] = y4 - y3;
|
|
|
|
ratio_x = ratio_y = 0.0;
|
|
|
|
if (x2 - x1)
|
|
ratio_x = (double) (x4 - x3) / (double) (x2 - x1);
|
|
if (y2 - y1)
|
|
ratio_y = (double) (y4 - y3) / (double) (y2 - y1);
|
|
|
|
g_snprintf (x_ratio_buf, sizeof (x_ratio_buf), "%0.2f", ratio_x);
|
|
g_snprintf (y_ratio_buf, sizeof (y_ratio_buf), "%0.2f", ratio_y);
|
|
|
|
info_dialog_update (tr_tool->info_dialog);
|
|
info_dialog_popup (tr_tool->info_dialog);
|
|
}
|
|
|
|
static void
|
|
gimp_scale_tool_size_changed (GtkWidget *widget,
|
|
GimpTransformTool *tr_tool)
|
|
{
|
|
gint width;
|
|
gint height;
|
|
|
|
width = RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0));
|
|
height = RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1));
|
|
|
|
if ((width != (tr_tool->trans_info[X1] -
|
|
tr_tool->trans_info[X0])) ||
|
|
(height != (tr_tool->trans_info[Y1] -
|
|
tr_tool->trans_info[Y0])))
|
|
{
|
|
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tr_tool));
|
|
|
|
tr_tool->trans_info[X1] = tr_tool->trans_info[X0] + width;
|
|
tr_tool->trans_info[Y1] = tr_tool->trans_info[Y0] + height;
|
|
|
|
gimp_scale_tool_recalc (tr_tool, GIMP_TOOL (tr_tool)->gdisp);
|
|
|
|
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_scale_tool_unit_changed (GtkWidget *widget,
|
|
GimpTransformTool *tr_tool)
|
|
{
|
|
gimp_scale_tool_info_update (tr_tool);
|
|
}
|