mirror of https://github.com/GNOME/gimp.git
415 lines
14 KiB
C
415 lines
14 KiB
C
/* GIMP - The GNU 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include <gegl.h>
|
|
#include <gtk/gtk.h>
|
|
#include <gdk/gdkkeysyms.h>
|
|
|
|
#include "libgimpmath/gimpmath.h"
|
|
#include "libgimpwidgets/gimpwidgets.h"
|
|
|
|
#include "tools-types.h"
|
|
|
|
#include "core/gimp-transform-utils.h"
|
|
#include "core/gimpimage.h"
|
|
|
|
#include "widgets/gimphelp-ids.h"
|
|
|
|
#include "display/gimpdisplay.h"
|
|
#include "display/gimpdisplayshell.h"
|
|
|
|
#include "gimprotatetool.h"
|
|
#include "gimptoolcontrol.h"
|
|
#include "gimptransformoptions.h"
|
|
|
|
#include "gimp-intl.h"
|
|
|
|
|
|
/* index into trans_info array */
|
|
#define ANGLE 0
|
|
#define REAL_ANGLE 1
|
|
#define CENTER_X 2
|
|
#define CENTER_Y 3
|
|
|
|
#define FIFTEEN_DEG (G_PI / 12.0)
|
|
|
|
#define SB_WIDTH 10
|
|
|
|
|
|
/* local function prototypes */
|
|
|
|
static gboolean gimp_rotate_tool_key_press (GimpTool *tool,
|
|
GdkEventKey *kevent,
|
|
GimpDisplay *display);
|
|
static void gimp_rotate_tool_dialog (GimpTransformTool *tr_tool);
|
|
static void gimp_rotate_tool_dialog_update (GimpTransformTool *tr_tool);
|
|
static void gimp_rotate_tool_prepare (GimpTransformTool *tr_tool,
|
|
GimpDisplay *display);
|
|
static void gimp_rotate_tool_motion (GimpTransformTool *tr_tool,
|
|
GimpDisplay *display);
|
|
static void gimp_rotate_tool_recalc (GimpTransformTool *tr_tool,
|
|
GimpDisplay *display);
|
|
static void rotate_angle_changed (GtkAdjustment *adj,
|
|
GimpTransformTool *tr_tool);
|
|
static void rotate_center_changed (GtkWidget *entry,
|
|
GimpTransformTool *tr_tool);
|
|
|
|
|
|
G_DEFINE_TYPE (GimpRotateTool, gimp_rotate_tool, GIMP_TYPE_TRANSFORM_TOOL)
|
|
|
|
#define parent_class gimp_rotate_tool_parent_class
|
|
|
|
|
|
void
|
|
gimp_rotate_tool_register (GimpToolRegisterCallback callback,
|
|
gpointer data)
|
|
{
|
|
(* callback) (GIMP_TYPE_ROTATE_TOOL,
|
|
GIMP_TYPE_TRANSFORM_OPTIONS,
|
|
gimp_transform_options_gui,
|
|
GIMP_CONTEXT_BACKGROUND_MASK,
|
|
"gimp-rotate-tool",
|
|
_("Rotate"),
|
|
_("Rotate Tool: Rotate the layer, selection or path"),
|
|
N_("_Rotate"), "<shift>R",
|
|
NULL, GIMP_HELP_TOOL_ROTATE,
|
|
GIMP_STOCK_TOOL_ROTATE,
|
|
data);
|
|
}
|
|
|
|
static void
|
|
gimp_rotate_tool_class_init (GimpRotateToolClass *klass)
|
|
{
|
|
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
|
|
GimpTransformToolClass *trans_class = GIMP_TRANSFORM_TOOL_CLASS (klass);
|
|
|
|
tool_class->key_press = gimp_rotate_tool_key_press;
|
|
|
|
trans_class->dialog = gimp_rotate_tool_dialog;
|
|
trans_class->dialog_update = gimp_rotate_tool_dialog_update;
|
|
trans_class->prepare = gimp_rotate_tool_prepare;
|
|
trans_class->motion = gimp_rotate_tool_motion;
|
|
trans_class->recalc = gimp_rotate_tool_recalc;
|
|
}
|
|
|
|
static void
|
|
gimp_rotate_tool_init (GimpRotateTool *rotate_tool)
|
|
{
|
|
GimpTool *tool = GIMP_TOOL (rotate_tool);
|
|
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (rotate_tool);
|
|
|
|
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_ROTATE);
|
|
|
|
tr_tool->undo_desc = C_("command", "Rotate");
|
|
tr_tool->progress_text = _("Rotating");
|
|
|
|
tr_tool->use_grid = TRUE;
|
|
tr_tool->use_center = TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gimp_rotate_tool_key_press (GimpTool *tool,
|
|
GdkEventKey *kevent,
|
|
GimpDisplay *display)
|
|
{
|
|
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
|
|
|
|
if (display == draw_tool->display)
|
|
{
|
|
GimpRotateTool *rotate = GIMP_ROTATE_TOOL (tool);
|
|
GtkSpinButton *angle_spin = GTK_SPIN_BUTTON (rotate->angle_spin_button);
|
|
|
|
switch (kevent->keyval)
|
|
{
|
|
case GDK_Up:
|
|
gtk_spin_button_spin (angle_spin, GTK_SPIN_STEP_FORWARD, 0.0);
|
|
return TRUE;
|
|
|
|
case GDK_Down:
|
|
gtk_spin_button_spin (angle_spin, GTK_SPIN_STEP_BACKWARD, 0.0);
|
|
return TRUE;
|
|
|
|
case GDK_Left:
|
|
gtk_spin_button_spin (angle_spin, GTK_SPIN_PAGE_FORWARD, 0.0);
|
|
return TRUE;
|
|
|
|
case GDK_Right:
|
|
gtk_spin_button_spin (angle_spin, GTK_SPIN_PAGE_BACKWARD, 0.0);
|
|
return TRUE;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return GIMP_TOOL_CLASS (parent_class)->key_press (tool, kevent, display);
|
|
}
|
|
|
|
static void
|
|
gimp_rotate_tool_dialog (GimpTransformTool *tr_tool)
|
|
{
|
|
GimpRotateTool *rotate = GIMP_ROTATE_TOOL (tr_tool);
|
|
GtkWidget *table;
|
|
GtkWidget *button;
|
|
GtkWidget *scale;
|
|
GtkObject *adj;
|
|
|
|
table = gtk_table_new (4, 2, FALSE);
|
|
gtk_container_set_border_width (GTK_CONTAINER (table), 6);
|
|
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
|
|
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
|
|
gtk_table_set_row_spacing (GTK_TABLE (table), 1, 6);
|
|
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (tr_tool->dialog))),
|
|
table, FALSE, FALSE, 0);
|
|
gtk_widget_show (table);
|
|
|
|
button = gimp_spin_button_new (&rotate->angle_adj,
|
|
0, -180, 180, 0.1, 15, 0, 2, 2);
|
|
gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (button), TRUE);
|
|
gtk_entry_set_width_chars (GTK_ENTRY (button), SB_WIDTH);
|
|
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0, _("_Angle:"),
|
|
0.0, 0.5, button, 1, TRUE);
|
|
rotate->angle_spin_button = button;
|
|
|
|
g_signal_connect (rotate->angle_adj, "value-changed",
|
|
G_CALLBACK (rotate_angle_changed),
|
|
tr_tool);
|
|
|
|
scale = gtk_hscale_new (GTK_ADJUSTMENT (rotate->angle_adj));
|
|
gtk_scale_set_draw_value (GTK_SCALE (scale), FALSE);
|
|
gtk_table_attach (GTK_TABLE (table), scale, 1, 2, 1, 2,
|
|
GTK_EXPAND | GTK_FILL, GTK_SHRINK, 0, 0);
|
|
gtk_widget_show (scale);
|
|
|
|
button = gimp_spin_button_new (&adj, 0, -1, 1, 1, 10, 0, 1, 2);
|
|
gtk_entry_set_width_chars (GTK_ENTRY (button), SB_WIDTH);
|
|
gimp_table_attach_aligned (GTK_TABLE (table), 0, 2, _("Center _X:"),
|
|
0.0, 0.5, button, 1, TRUE);
|
|
|
|
rotate->sizeentry = gimp_size_entry_new (1, GIMP_UNIT_PIXEL, "%a",
|
|
TRUE, TRUE, FALSE, SB_WIDTH,
|
|
GIMP_SIZE_ENTRY_UPDATE_SIZE);
|
|
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (rotate->sizeentry),
|
|
GTK_SPIN_BUTTON (button), NULL);
|
|
gimp_size_entry_set_pixel_digits (GIMP_SIZE_ENTRY (rotate->sizeentry), 2);
|
|
gimp_table_attach_aligned (GTK_TABLE (table), 0, 3, _("Center _Y:"),
|
|
0.0, 0.5, rotate->sizeentry, 1, TRUE);
|
|
|
|
g_signal_connect (rotate->sizeentry, "value-changed",
|
|
G_CALLBACK (rotate_center_changed),
|
|
tr_tool);
|
|
}
|
|
|
|
static void
|
|
gimp_rotate_tool_dialog_update (GimpTransformTool *tr_tool)
|
|
{
|
|
GimpRotateTool *rotate = GIMP_ROTATE_TOOL (tr_tool);
|
|
|
|
gtk_adjustment_set_value (GTK_ADJUSTMENT (rotate->angle_adj),
|
|
gimp_rad_to_deg (tr_tool->trans_info[ANGLE]));
|
|
|
|
g_signal_handlers_block_by_func (rotate->sizeentry,
|
|
rotate_center_changed,
|
|
tr_tool);
|
|
|
|
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (rotate->sizeentry), 0,
|
|
tr_tool->trans_info[CENTER_X]);
|
|
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (rotate->sizeentry), 1,
|
|
tr_tool->trans_info[CENTER_Y]);
|
|
|
|
g_signal_handlers_unblock_by_func (rotate->sizeentry,
|
|
rotate_center_changed,
|
|
tr_tool);
|
|
}
|
|
|
|
static void
|
|
gimp_rotate_tool_prepare (GimpTransformTool *tr_tool,
|
|
GimpDisplay *display)
|
|
{
|
|
GimpRotateTool *rotate = GIMP_ROTATE_TOOL (tr_tool);
|
|
gdouble xres;
|
|
gdouble yres;
|
|
|
|
tr_tool->trans_info[ANGLE] = 0.0;
|
|
tr_tool->trans_info[REAL_ANGLE] = 0.0;
|
|
tr_tool->trans_info[CENTER_X] = tr_tool->cx;
|
|
tr_tool->trans_info[CENTER_Y] = tr_tool->cy;
|
|
|
|
gimp_image_get_resolution (display->image, &xres, &yres);
|
|
|
|
g_signal_handlers_block_by_func (rotate->sizeentry,
|
|
rotate_center_changed,
|
|
tr_tool);
|
|
|
|
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (rotate->sizeentry),
|
|
GIMP_DISPLAY_SHELL (display->shell)->unit);
|
|
|
|
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (rotate->sizeentry), 0,
|
|
xres, FALSE);
|
|
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (rotate->sizeentry), 1,
|
|
yres, FALSE);
|
|
|
|
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (rotate->sizeentry), 0,
|
|
-65536,
|
|
65536 +
|
|
gimp_image_get_width (display->image));
|
|
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (rotate->sizeentry), 1,
|
|
-65536,
|
|
65536 +
|
|
gimp_image_get_height (display->image));
|
|
|
|
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (rotate->sizeentry), 0,
|
|
tr_tool->x1, tr_tool->x2);
|
|
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (rotate->sizeentry), 1,
|
|
tr_tool->y1, tr_tool->y2);
|
|
|
|
g_signal_handlers_unblock_by_func (rotate->sizeentry,
|
|
rotate_center_changed,
|
|
tr_tool);
|
|
}
|
|
|
|
static void
|
|
gimp_rotate_tool_motion (GimpTransformTool *tr_tool,
|
|
GimpDisplay *display)
|
|
{
|
|
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
|
|
gdouble angle1, angle2, angle;
|
|
gdouble cx, cy;
|
|
gdouble x1, y1, x2, y2;
|
|
|
|
if (tr_tool->function == TRANSFORM_HANDLE_CENTER)
|
|
{
|
|
tr_tool->trans_info[CENTER_X] = tr_tool->curx;
|
|
tr_tool->trans_info[CENTER_Y] = tr_tool->cury;
|
|
tr_tool->cx = tr_tool->curx;
|
|
tr_tool->cy = tr_tool->cury;
|
|
|
|
return;
|
|
}
|
|
|
|
cx = tr_tool->trans_info[CENTER_X];
|
|
cy = tr_tool->trans_info[CENTER_Y];
|
|
|
|
x1 = tr_tool->curx - cx;
|
|
x2 = tr_tool->lastx - cx;
|
|
y1 = cy - tr_tool->cury;
|
|
y2 = cy - tr_tool->lasty;
|
|
|
|
/* find the first angle */
|
|
angle1 = atan2 (y1, x1);
|
|
|
|
/* find the angle */
|
|
angle2 = atan2 (y2, x2);
|
|
|
|
angle = angle2 - angle1;
|
|
|
|
if (angle > G_PI || angle < -G_PI)
|
|
angle = angle2 - ((angle1 < 0) ? 2.0 * G_PI + angle1 : angle1 - 2.0 * G_PI);
|
|
|
|
/* increment the transform tool's angle */
|
|
tr_tool->trans_info[REAL_ANGLE] += angle;
|
|
|
|
/* limit the angle to between -180 and 180 degrees */
|
|
if (tr_tool->trans_info[REAL_ANGLE] < - G_PI)
|
|
{
|
|
tr_tool->trans_info[REAL_ANGLE] += 2.0 * G_PI;
|
|
}
|
|
else if (tr_tool->trans_info[REAL_ANGLE] > G_PI)
|
|
{
|
|
tr_tool->trans_info[REAL_ANGLE] -= 2.0 * G_PI;
|
|
}
|
|
|
|
/* constrain the angle to 15-degree multiples if ctrl is held down */
|
|
if (options->constrain)
|
|
{
|
|
tr_tool->trans_info[ANGLE] =
|
|
FIFTEEN_DEG * (gint) ((tr_tool->trans_info[REAL_ANGLE] +
|
|
FIFTEEN_DEG / 2.0) / FIFTEEN_DEG);
|
|
}
|
|
else
|
|
{
|
|
tr_tool->trans_info[ANGLE] = tr_tool->trans_info[REAL_ANGLE];
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_rotate_tool_recalc (GimpTransformTool *tr_tool,
|
|
GimpDisplay *display)
|
|
{
|
|
tr_tool->cx = tr_tool->trans_info[CENTER_X];
|
|
tr_tool->cy = tr_tool->trans_info[CENTER_Y];
|
|
|
|
gimp_matrix3_identity (&tr_tool->transform);
|
|
gimp_transform_matrix_rotate_center (&tr_tool->transform,
|
|
tr_tool->cx,
|
|
tr_tool->cy,
|
|
tr_tool->trans_info[ANGLE]);
|
|
}
|
|
|
|
static void
|
|
rotate_angle_changed (GtkAdjustment *adj,
|
|
GimpTransformTool *tr_tool)
|
|
{
|
|
gdouble value = gimp_deg_to_rad (gtk_adjustment_get_value (adj));
|
|
|
|
#define ANGLE_EPSILON 0.0001
|
|
|
|
if (ABS (value - tr_tool->trans_info[ANGLE]) > ANGLE_EPSILON)
|
|
{
|
|
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tr_tool));
|
|
|
|
tr_tool->trans_info[REAL_ANGLE] = tr_tool->trans_info[ANGLE] = value;
|
|
|
|
gimp_transform_tool_recalc (tr_tool, GIMP_TOOL (tr_tool)->display);
|
|
|
|
gimp_transform_tool_expose_preview (tr_tool);
|
|
|
|
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
|
|
}
|
|
|
|
#undef ANGLE_EPSILON
|
|
}
|
|
|
|
static void
|
|
rotate_center_changed (GtkWidget *widget,
|
|
GimpTransformTool *tr_tool)
|
|
{
|
|
gdouble cx = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0);
|
|
gdouble cy = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1);
|
|
|
|
if ((cx != tr_tool->trans_info[CENTER_X]) ||
|
|
(cy != tr_tool->trans_info[CENTER_Y]))
|
|
{
|
|
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tr_tool));
|
|
|
|
tr_tool->trans_info[CENTER_X] = cx;
|
|
tr_tool->trans_info[CENTER_Y] = cy;
|
|
tr_tool->cx = cx;
|
|
tr_tool->cy = cy;
|
|
|
|
gimp_transform_tool_recalc (tr_tool, GIMP_TOOL (tr_tool)->display);
|
|
|
|
gimp_transform_tool_expose_preview (tr_tool);
|
|
|
|
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
|
|
}
|
|
}
|