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gimp/app/tools/gimptransformtool.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
*
* 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 <stdlib.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.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 "base/tile-manager.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpdrawable.h"
#include "core/gimpdrawable-transform.h"
#include "core/gimpimage.h"
#include "core/gimpimage-mask.h"
#include "core/gimpimage-undo.h"
#include "core/gimpimage-undo-push.h"
#include "core/gimplayer.h"
#include "core/gimpmarshal.h"
#include "core/gimptoolinfo.h"
#include "widgets/gimpviewabledialog.h"
#include "gui/info-dialog.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplay-foreach.h"
#include "display/gimpprogress.h"
#include "gimptransformoptions.h"
#include "gimptransformtool.h"
#include "gimptransformtool-undo.h"
#include "tool_manager.h"
#include "path_transform.h"
#include "libgimp/gimpintl.h"
#define HANDLE_SIZE 10
/* local function prototypes */
static void gimp_transform_tool_init (GimpTransformTool *tool);
static void gimp_transform_tool_class_init (GimpTransformToolClass *tool);
static void gimp_transform_tool_finalize (GObject *object);
static void gimp_transform_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp);
static void gimp_transform_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_transform_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_transform_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_transform_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_transform_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_transform_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_transform_tool_draw (GimpDrawTool *draw_tool);
static TileManager *
gimp_transform_tool_real_transform (GimpTransformTool *tr_tool,
GimpDisplay *gdisp);
static void gimp_transform_tool_reset (GimpTransformTool *tr_tool);
static void gimp_transform_tool_bounds (GimpTransformTool *tr_tool,
GimpDisplay *gdisp);
static void gimp_transform_tool_dialog (GimpTransformTool *tr_tool);
static void gimp_transform_tool_prepare (GimpTransformTool *tr_tool,
GimpDisplay *gdisp);
static void gimp_transform_tool_recalc (GimpTransformTool *tr_tool,
GimpDisplay *gdisp);
static void gimp_transform_tool_doit (GimpTransformTool *tr_tool,
GimpDisplay *gdisp);
static void gimp_transform_tool_grid_recalc (GimpTransformTool *tr_tool);
static void transform_reset_callback (GtkWidget *widget,
GimpTransformTool *tr_tool);
static void transform_cancel_callback (GtkWidget *widget,
GimpTransformTool *tr_tool);
static void transform_ok_callback (GtkWidget *widget,
GimpTransformTool *tr_tool);
static void gimp_transform_tool_notify_grid (GimpTransformOptions *options,
GParamSpec *pspec,
GimpTransformTool *tr_tool);
static void gimp_transform_tool_notify_path (GimpTransformOptions *options,
GParamSpec *pspec,
GimpTransformTool *tr_tool);
static GimpDrawToolClass *parent_class = NULL;
GType
gimp_transform_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpTransformToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_transform_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpTransformTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_transform_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_DRAW_TOOL,
"GimpTransformTool",
&tool_info, 0);
}
return tool_type;
}
static void
gimp_transform_tool_class_init (GimpTransformToolClass *klass)
{
GObjectClass *object_class;
GimpToolClass *tool_class;
GimpDrawToolClass *draw_class;
object_class = G_OBJECT_CLASS (klass);
tool_class = GIMP_TOOL_CLASS (klass);
draw_class = GIMP_DRAW_TOOL_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gimp_transform_tool_finalize;
tool_class->control = gimp_transform_tool_control;
tool_class->button_press = gimp_transform_tool_button_press;
tool_class->button_release = gimp_transform_tool_button_release;
tool_class->motion = gimp_transform_tool_motion;
tool_class->modifier_key = gimp_transform_tool_modifier_key;
tool_class->oper_update = gimp_transform_tool_oper_update;
tool_class->cursor_update = gimp_transform_tool_cursor_update;
draw_class->draw = gimp_transform_tool_draw;
klass->dialog = NULL;
klass->prepare = NULL;
klass->motion = NULL;
klass->recalc = NULL;
klass->transform = gimp_transform_tool_real_transform;
}
static void
gimp_transform_tool_init (GimpTransformTool *tr_tool)
{
GimpTool *tool;
gint i;
tool = GIMP_TOOL (tr_tool);
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_tool_control_set_preserve (tool->control, FALSE);
tr_tool->function = TRANSFORM_CREATING;
tr_tool->original = NULL;
for (i = 0; i < TRAN_INFO_SIZE; i++)
{
tr_tool->trans_info[i] = 0.0;
tr_tool->old_trans_info[i] = 0.0;
}
gimp_matrix3_identity (tr_tool->transform);
tr_tool->use_grid = TRUE;
tr_tool->use_center = TRUE;
tr_tool->ngx = 0;
tr_tool->ngy = 0;
tr_tool->grid_coords = NULL;
tr_tool->tgrid_coords = NULL;
tr_tool->notify_connected = FALSE;
tr_tool->show_path = FALSE;
tr_tool->shell_desc = NULL;
tr_tool->progress_text = _("Transforming...");
tr_tool->info_dialog = NULL;
}
static void
gimp_transform_tool_finalize (GObject *object)
{
GimpTransformTool *tr_tool;
tr_tool = GIMP_TRANSFORM_TOOL (object);
if (tr_tool->original)
{
tile_manager_destroy (tr_tool->original);
tr_tool->original = NULL;
}
if (tr_tool->info_dialog)
{
info_dialog_free (tr_tool->info_dialog);
tr_tool->info_dialog = NULL;
}
if (tr_tool->grid_coords)
{
g_free (tr_tool->grid_coords);
tr_tool->grid_coords = NULL;
}
if (tr_tool->tgrid_coords)
{
g_free (tr_tool->tgrid_coords);
tr_tool->tgrid_coords = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_transform_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp)
{
GimpTransformTool *tr_tool;
tr_tool = GIMP_TRANSFORM_TOOL (tool);
switch (action)
{
case PAUSE:
break;
case RESUME:
gimp_transform_tool_recalc (tr_tool, gdisp);
break;
case HALT:
gimp_transform_tool_reset (tr_tool);
return; /* don't upchain */
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
static void
gimp_transform_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpTransformTool *tr_tool;
GimpDrawTool *draw_tool;
GimpDrawable *drawable;
gint off_x, off_y;
tr_tool = GIMP_TRANSFORM_TOOL (tool);
draw_tool = GIMP_DRAW_TOOL (tool);
drawable = gimp_image_active_drawable (gdisp->gimage);
if (tr_tool->use_grid && ! tr_tool->notify_connected)
{
tr_tool->show_path =
GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options)->show_path;
g_signal_connect_object (tool->tool_info->tool_options,
"notify::grid-type",
G_CALLBACK (gimp_transform_tool_notify_grid),
tr_tool, 0);
g_signal_connect_object (tool->tool_info->tool_options,
"notify::grid-size",
G_CALLBACK (gimp_transform_tool_notify_grid),
tr_tool, 0);
g_signal_connect_object (tool->tool_info->tool_options,
"notify::show-path",
G_CALLBACK (gimp_transform_tool_notify_path),
tr_tool, 0);
tr_tool->notify_connected = TRUE;
}
if (gdisp != tool->gdisp)
{
/* Initialisation stuff: if the cursor is clicked inside the current
* selection, show the bounding box and handles...
*/
gimp_drawable_offsets (drawable, &off_x, &off_y);
if (coords->x >= off_x &&
coords->y >= off_y &&
coords->x < (off_x + gimp_drawable_width (drawable)) &&
coords->y < (off_y + gimp_drawable_height (drawable)) &&
(gimp_image_mask_is_empty (gdisp->gimage) ||
gimp_image_mask_value (gdisp->gimage, coords->x, coords->y)))
{
if (GIMP_IS_LAYER (drawable) &&
gimp_layer_get_mask (GIMP_LAYER (drawable)))
{
g_message (_("Transformations do not work on\n"
"layers that contain layer masks."));
gimp_tool_control_halt (tool->control);
return;
}
/* If the tool is already active, clear the current state
* and reset
*/
if (gimp_tool_control_is_active (tool->control))
{
g_warning ("%s: tool_already ACTIVE", G_GNUC_FUNCTION);
gimp_transform_tool_reset (tr_tool);
}
/* Set the pointer to the active display */
tool->gdisp = gdisp;
tool->drawable = drawable;
gimp_tool_control_activate (tool->control);
/* Find the transform bounds for some tools (like scale,
* perspective) that actually need the bounds for
* initializing
*/
gimp_transform_tool_bounds (tr_tool, gdisp);
/* Initialize the transform tool */
if (! tr_tool->info_dialog)
gimp_transform_tool_dialog (tr_tool);
gimp_transform_tool_prepare (tr_tool, gdisp);
/* Recalculate the transform tool */
gimp_transform_tool_recalc (tr_tool, gdisp);
/* start drawing the bounding box and handles... */
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), gdisp);
/* find which handle we're dragging */
gimp_transform_tool_oper_update (tool, coords, state, gdisp);
tr_tool->function = TRANSFORM_CREATING;
}
}
if (tr_tool->function == TRANSFORM_CREATING &&
gimp_tool_control_is_active (tool->control))
{
gint i;
/* Save the current transformation info */
for (i = 0; i < TRAN_INFO_SIZE; i++)
tr_tool->old_trans_info[i] = tr_tool->trans_info[i];
}
/* if we have already displayed the bounding box and handles,
* check to make sure that the display which currently owns the
* tool is the one which just received the button pressed event
*/
if (gdisp == tool->gdisp)
{
/* Save the current pointer position */
tr_tool->lastx = tr_tool->startx = coords->x;
tr_tool->lasty = tr_tool->starty = coords->y;
gimp_tool_control_activate (tool->control);
}
}
static void
gimp_transform_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpTransformTool *tr_tool;
gint i;
tr_tool = GIMP_TRANSFORM_TOOL (tool);
/* if we are creating, there is nothing to be done...exit */
if (tr_tool->function == TRANSFORM_CREATING && tr_tool->use_grid)
return;
/* if the 3rd button isn't pressed, transform the selected mask */
if (! (state & GDK_BUTTON3_MASK))
{
/* Shift-clicking is another way to approve the transform */
if ((state & GDK_SHIFT_MASK) || ! tr_tool->use_grid)
{
gimp_transform_tool_doit (tr_tool, gdisp);
}
else
{
/* Only update the paths preview */
path_transform_current_path (gdisp->gimage,
tr_tool->transform, TRUE);
}
}
else
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* Restore the previous transformation info */
for (i = 0; i < TRAN_INFO_SIZE; i++)
tr_tool->trans_info[i] = tr_tool->old_trans_info[i];
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc (tr_tool, gdisp);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
/* Update the paths preview */
path_transform_current_path (gdisp->gimage,
tr_tool->transform, TRUE);
}
}
static void
gimp_transform_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpTransformToolClass *tr_tool_class;
GimpTransformTool *tr_tool;
tr_tool = GIMP_TRANSFORM_TOOL (tool);
/* if we are creating, there is nothing to be done so exit. */
if (tr_tool->function == TRANSFORM_CREATING || ! tr_tool->use_grid)
return;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
tr_tool->curx = coords->x;
tr_tool->cury = coords->y;
tr_tool->state = state;
/* recalculate the tool's transformation matrix */
tr_tool_class = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool);
if (tr_tool_class->motion)
{
tr_tool_class->motion (tr_tool, gdisp);
if (tr_tool_class->recalc)
tr_tool_class->recalc (tr_tool, gdisp);
}
tr_tool->lastx = tr_tool->curx;
tr_tool->lasty = tr_tool->cury;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_transform_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpTransformOptions *options;
options = GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options);
if (key == GDK_CONTROL_MASK)
{
g_object_set (G_OBJECT (options),
"constrain-1", ! options->constrain_1,
NULL);
}
else if (key == GDK_MOD1_MASK)
{
g_object_set (G_OBJECT (options),
"constrain-2", ! options->constrain_2,
NULL);
}
}
static void
gimp_transform_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpTransformTool *tr_tool;
GimpDrawTool *draw_tool;
tr_tool = GIMP_TRANSFORM_TOOL (tool);
draw_tool = GIMP_DRAW_TOOL (tool);
if (! tr_tool->use_grid)
return;
if (gdisp == tool->gdisp)
{
gdouble closest_dist;
gdouble dist;
closest_dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
coords->x, coords->y,
tr_tool->tx1, tr_tool->ty1);
tr_tool->function = TRANSFORM_HANDLE_1;
dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
coords->x, coords->y,
tr_tool->tx2, tr_tool->ty2);
if (dist < closest_dist)
{
closest_dist = dist;
tr_tool->function = TRANSFORM_HANDLE_2;
}
dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
coords->x, coords->y,
tr_tool->tx3, tr_tool->ty3);
if (dist < closest_dist)
{
closest_dist = dist;
tr_tool->function = TRANSFORM_HANDLE_3;
}
dist = gimp_draw_tool_calc_distance (draw_tool, gdisp,
coords->x, coords->y,
tr_tool->tx4, tr_tool->ty4);
if (dist < closest_dist)
{
closest_dist = dist;
tr_tool->function = TRANSFORM_HANDLE_4;
}
if (gimp_draw_tool_on_handle (draw_tool, gdisp,
coords->x, coords->y,
GIMP_HANDLE_CIRCLE,
tr_tool->tcx, tr_tool->tcy,
HANDLE_SIZE, HANDLE_SIZE,
GTK_ANCHOR_CENTER,
FALSE))
{
tr_tool->function = TRANSFORM_HANDLE_CENTER;
}
}
}
static void
gimp_transform_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpTransformTool *tr_tool;
GimpDrawable *drawable;
tr_tool = GIMP_TRANSFORM_TOOL (tool);
if (tr_tool->use_grid)
{
GdkCursorType ctype = GDK_TOP_LEFT_ARROW;
GimpCursorModifier cmodifier = GIMP_CURSOR_MODIFIER_NONE;
if ((drawable = gimp_image_active_drawable (gdisp->gimage)))
{
gint off_x, off_y;
gimp_drawable_offsets (drawable, &off_x, &off_y);
if (GIMP_IS_LAYER (drawable) &&
gimp_layer_get_mask (GIMP_LAYER (drawable)))
{
ctype = GIMP_BAD_CURSOR;
}
else if (coords->x >= off_x &&
coords->y >= off_y &&
coords->x < (off_x + drawable->width) &&
coords->y < (off_y + drawable->height))
{
if (gimp_image_mask_is_empty (gdisp->gimage) ||
gimp_image_mask_value (gdisp->gimage, coords->x, coords->y))
{
ctype = GIMP_MOUSE_CURSOR;
}
}
}
if (tr_tool->use_center && tr_tool->function == TRANSFORM_HANDLE_CENTER)
{
cmodifier = GIMP_CURSOR_MODIFIER_MOVE;
}
gimp_tool_control_set_cursor (tool->control, ctype);
gimp_tool_control_set_cursor_modifier (tool->control, cmodifier);
}
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
static void
gimp_transform_tool_draw (GimpDrawTool *draw_tool)
{
GimpTransformTool *tr_tool;
GimpTransformOptions *options;
gint i, k, gci;
tr_tool = GIMP_TRANSFORM_TOOL (draw_tool);
if (! tr_tool->use_grid)
return;
options = GIMP_TRANSFORM_OPTIONS (GIMP_TOOL (draw_tool)->tool_info->tool_options);
/* draw the bounding box */
gimp_draw_tool_draw_line (draw_tool,
tr_tool->tx1, tr_tool->ty1,
tr_tool->tx2, tr_tool->ty2,
FALSE);
gimp_draw_tool_draw_line (draw_tool,
tr_tool->tx2, tr_tool->ty2,
tr_tool->tx4, tr_tool->ty4,
FALSE);
gimp_draw_tool_draw_line (draw_tool,
tr_tool->tx3, tr_tool->ty3,
tr_tool->tx4, tr_tool->ty4,
FALSE);
gimp_draw_tool_draw_line (draw_tool,
tr_tool->tx3, tr_tool->ty3,
tr_tool->tx1, tr_tool->ty1,
FALSE);
/* Draw the grid */
if ((tr_tool->grid_coords != NULL) && (tr_tool->tgrid_coords != NULL))
{
gci = 0;
k = tr_tool->ngx + tr_tool->ngy;
for (i = 0; i < k; i++)
{
gimp_draw_tool_draw_line (draw_tool,
tr_tool->tgrid_coords[gci],
tr_tool->tgrid_coords[gci + 1],
tr_tool->tgrid_coords[gci + 2],
tr_tool->tgrid_coords[gci + 3],
FALSE);
gci += 4;
}
}
/* draw the tool handles */
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx1, tr_tool->ty1,
HANDLE_SIZE, HANDLE_SIZE,
GTK_ANCHOR_CENTER,
FALSE);
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx2, tr_tool->ty2,
HANDLE_SIZE, HANDLE_SIZE,
GTK_ANCHOR_CENTER,
FALSE);
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx3, tr_tool->ty3,
HANDLE_SIZE, HANDLE_SIZE,
GTK_ANCHOR_CENTER,
FALSE);
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx4, tr_tool->ty4,
HANDLE_SIZE, HANDLE_SIZE,
GTK_ANCHOR_CENTER,
FALSE);
/* draw the center */
if (tr_tool->use_center)
{
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_FILLED_CIRCLE,
tr_tool->tcx, tr_tool->tcy,
HANDLE_SIZE, HANDLE_SIZE,
GTK_ANCHOR_CENTER,
FALSE);
}
if (tr_tool->show_path)
{
GimpMatrix3 tmp_matrix;
if (options->direction == GIMP_TRANSFORM_BACKWARD)
{
gimp_matrix3_invert (tr_tool->transform, tmp_matrix);
}
else
{
gimp_matrix3_duplicate (tr_tool->transform, tmp_matrix);
}
path_transform_draw_current (GIMP_TOOL (draw_tool)->gdisp,
draw_tool, tmp_matrix);
}
}
static TileManager *
gimp_transform_tool_real_transform (GimpTransformTool *tr_tool,
GimpDisplay *gdisp)
{
GimpTool *tool;
GimpDrawable *drawable;
GimpTransformOptions *options;
GimpProgress *progress;
TileManager *ret;
tool = GIMP_TOOL (tr_tool);
options = GIMP_TRANSFORM_OPTIONS (tool->tool_info->tool_options);
if (tr_tool->info_dialog)
gtk_widget_set_sensitive (GTK_WIDGET (tr_tool->info_dialog->shell), FALSE);
progress = gimp_progress_start (gdisp, tr_tool->progress_text, FALSE,
NULL, NULL);
drawable = gimp_image_active_drawable (gdisp->gimage);
ret = gimp_drawable_transform_tiles_affine (drawable,
tr_tool->original,
options->interpolation,
options->clip,
tr_tool->transform,
options->direction,
progress ?
gimp_progress_update_and_flush :
NULL,
progress);
if (progress)
gimp_progress_end (progress);
return ret;
}
static void
gimp_transform_tool_doit (GimpTransformTool *tr_tool,
GimpDisplay *gdisp)
{
GimpTool *tool;
TileManager *new_tiles;
GSList *path_undo;
gboolean new_layer;
gimp_set_busy (gdisp->gimage->gimp);
tool = GIMP_TOOL (tr_tool);
/* undraw the tool before we muck around with the transform matrix */
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tr_tool));
/* We're going to dirty this image, but we want to keep the tool
* around
*/
gimp_tool_control_set_preserve (tool->control, TRUE);
/* Start a transform undo group */
gimp_image_undo_group_start (gdisp->gimage, GIMP_UNDO_GROUP_TRANSFORM,
tool->tool_info->blurb);
/* With the old UI, if original is NULL, then this is the
* first transformation. In the new UI, it is always so, right?
*/
g_assert (tr_tool->original == NULL);
/* Copy the current selection to the transform tool's private
* selection pointer, so that the original source can be repeatedly
* modified.
*/
tool->drawable = gimp_image_active_drawable (gdisp->gimage);
tr_tool->original = gimp_drawable_transform_cut (tool->drawable,
&new_layer);
path_undo = path_transform_start_undo (gdisp->gimage);
/* Send the request for the transformation to the tool...
*/
new_tiles = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->transform (tr_tool,
gdisp);
gimp_transform_tool_prepare (tr_tool, gdisp);
gimp_transform_tool_recalc (tr_tool, gdisp);
if (new_tiles)
{
/* paste the new transformed image to the gimage...also implement
* undo...
*/
/* FIXME: we should check if the drawable is still valid */
gimp_drawable_transform_paste (tool->drawable,
new_tiles,
new_layer);
/* Make a note of the new current drawable (since we may have
* a floating selection, etc now.
*/
tool->drawable = gimp_image_active_drawable (gdisp->gimage);
gimp_transform_tool_push_undo (gdisp->gimage, NULL,
tool->ID,
G_TYPE_FROM_INSTANCE (tool),
tr_tool->old_trans_info,
NULL,
path_undo);
}
/* push the undo group end */
gimp_image_undo_group_end (gdisp->gimage);
/* We're done dirtying the image, and would like to be restarted
* if the image gets dirty while the tool exists
*/
gimp_tool_control_set_preserve (tool->control, FALSE);
gimp_unset_busy (gdisp->gimage->gimp);
gimp_image_flush (gdisp->gimage);
gimp_transform_tool_reset (tr_tool);
}
void
gimp_transform_tool_transform_bounding_box (GimpTransformTool *tr_tool)
{
g_return_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool));
gimp_matrix3_transform_point (tr_tool->transform,
tr_tool->x1, tr_tool->y1,
&tr_tool->tx1, &tr_tool->ty1);
gimp_matrix3_transform_point (tr_tool->transform,
tr_tool->x2, tr_tool->y1,
&tr_tool->tx2, &tr_tool->ty2);
gimp_matrix3_transform_point (tr_tool->transform,
tr_tool->x1, tr_tool->y2,
&tr_tool->tx3, &tr_tool->ty3);
gimp_matrix3_transform_point (tr_tool->transform,
tr_tool->x2, tr_tool->y2,
&tr_tool->tx4, &tr_tool->ty4);
gimp_matrix3_transform_point (tr_tool->transform,
tr_tool->cx, tr_tool->cy,
&tr_tool->tcx, &tr_tool->tcy);
if (tr_tool->grid_coords != NULL && tr_tool->tgrid_coords != NULL)
{
gint i, k;
gint gci;
gci = 0;
k = (tr_tool->ngx + tr_tool->ngy) * 2;
for (i = 0; i < k; i++)
{
gimp_matrix3_transform_point (tr_tool->transform,
tr_tool->grid_coords[gci],
tr_tool->grid_coords[gci + 1],
&tr_tool->tgrid_coords[gci],
&tr_tool->tgrid_coords[gci + 1]);
gci += 2;
}
}
}
static void
gimp_transform_tool_reset (GimpTransformTool *tr_tool)
{
GimpTool *tool;
tool = GIMP_TOOL (tr_tool);
if (tr_tool->original)
{
tile_manager_destroy (tr_tool->original);
tr_tool->original = NULL;
}
/* inactivate the tool */
tr_tool->function = TRANSFORM_CREATING;
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tr_tool));
if (tr_tool->info_dialog)
info_dialog_popdown (tr_tool->info_dialog);
gimp_tool_control_halt (tool->control);
tool->gdisp = NULL;
tool->drawable = NULL;
}
static void
gimp_transform_tool_bounds (GimpTransformTool *tr_tool,
GimpDisplay *gdisp)
{
TileManager *tiles;
GimpDrawable *drawable;
tiles = tr_tool->original;
drawable = gimp_image_active_drawable (gdisp->gimage);
/* find the boundaries */
if (tiles)
{
tile_manager_get_offsets (tiles, &tr_tool->x1, &tr_tool->y1);
tr_tool->x2 = tr_tool->x1 + tile_manager_width (tiles);
tr_tool->y2 = tr_tool->y1 + tile_manager_height (tiles);
}
else
{
gint offset_x, offset_y;
gimp_drawable_offsets (drawable, &offset_x, &offset_y);
gimp_drawable_mask_bounds (drawable,
&tr_tool->x1, &tr_tool->y1,
&tr_tool->x2, &tr_tool->y2);
tr_tool->x1 += offset_x;
tr_tool->y1 += offset_y;
tr_tool->x2 += offset_x;
tr_tool->y2 += offset_y;
}
tr_tool->cx = (gdouble) (tr_tool->x1 + tr_tool->x2) / 2.0;
tr_tool->cy = (gdouble) (tr_tool->y1 + tr_tool->y2) / 2.0;
if (tr_tool->use_grid)
{
/* changing the bounds invalidates any grid we may have */
gimp_transform_tool_grid_recalc (tr_tool);
}
}
static void
gimp_transform_tool_grid_recalc (GimpTransformTool *tr_tool)
{
GimpTransformOptions *options;
options = GIMP_TRANSFORM_OPTIONS (GIMP_TOOL (tr_tool)->tool_info->tool_options);
if (tr_tool->grid_coords != NULL)
{
g_free (tr_tool->grid_coords);
tr_tool->grid_coords = NULL;
}
if (tr_tool->tgrid_coords != NULL)
{
g_free (tr_tool->tgrid_coords);
tr_tool->tgrid_coords = NULL;
}
switch (options->grid_type)
{
case GIMP_TRANSFORM_GRID_TYPE_N_LINES:
case GIMP_TRANSFORM_GRID_TYPE_SPACING:
{
GimpTool *tool;
gint i, gci;
gdouble *coords;
gint width, height;
width = MAX (1, tr_tool->x2 - tr_tool->x1);
height = MAX (1, tr_tool->y2 - tr_tool->y1);
tool = GIMP_TOOL (tr_tool);
if (options->grid_type == GIMP_TRANSFORM_GRID_TYPE_N_LINES)
{
if (width <= height)
{
tr_tool->ngx = options->grid_size;
tr_tool->ngy = tr_tool->ngx * MAX (1, height / width);
}
else
{
tr_tool->ngy = options->grid_size;
tr_tool->ngx = tr_tool->ngy * MAX (1, width / height);
}
}
else /* GIMP_TRANSFORM_GRID_TYPE_SPACING */
{
gint grid_size = MAX (2, options->grid_size);
tr_tool->ngx = width / grid_size;
tr_tool->ngy = height / grid_size;
}
tr_tool->grid_coords = coords =
g_new (gdouble, (tr_tool->ngx + tr_tool->ngy) * 4);
tr_tool->tgrid_coords =
g_new (gdouble, (tr_tool->ngx + tr_tool->ngy) * 4);
gci = 0;
for (i = 1; i <= tr_tool->ngx; i++)
{
coords[gci] = tr_tool->x1 + (((gdouble) i) / (tr_tool->ngx + 1) *
(tr_tool->x2 - tr_tool->x1));
coords[gci + 1] = tr_tool->y1;
coords[gci + 2] = coords[gci];
coords[gci + 3] = tr_tool->y2;
gci += 4;
}
for (i = 1; i <= tr_tool->ngy; i++)
{
coords[gci] = tr_tool->x1;
coords[gci + 1] = tr_tool->y1 + (((gdouble) i) / (tr_tool->ngy + 1) *
(tr_tool->y2 - tr_tool->y1));
coords[gci + 2] = tr_tool->x2;
coords[gci + 3] = coords[gci + 1];
gci += 4;
}
}
default:
break;
}
}
static void
gimp_transform_tool_dialog (GimpTransformTool *tr_tool)
{
if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->dialog)
{
GimpToolInfo *tool_info;
const gchar *stock_id;
tool_info = GIMP_TOOL (tr_tool)->tool_info;
stock_id = gimp_viewable_get_stock_id (GIMP_VIEWABLE (tool_info));
tr_tool->info_dialog =
info_dialog_new (NULL,
tool_info->blurb,
GIMP_OBJECT (tool_info)->name,
stock_id,
tr_tool->shell_desc,
tool_manager_help_func, NULL);
gimp_dialog_create_action_area (GIMP_DIALOG (tr_tool->info_dialog->shell),
GIMP_STOCK_RESET,
transform_reset_callback,
tr_tool, NULL, NULL, FALSE, FALSE,
GTK_STOCK_CANCEL,
transform_cancel_callback,
tr_tool, NULL, NULL, FALSE, TRUE,
stock_id,
transform_ok_callback,
tr_tool, NULL, NULL, TRUE, FALSE,
NULL);
GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->dialog (tr_tool);
}
}
static void
gimp_transform_tool_prepare (GimpTransformTool *tr_tool,
GimpDisplay *gdisp)
{
if (tr_tool->info_dialog)
{
gimp_viewable_dialog_set_viewable (GIMP_VIEWABLE_DIALOG (tr_tool->info_dialog->shell),
GIMP_VIEWABLE (gimp_image_active_drawable (gdisp->gimage)));
gtk_widget_set_sensitive (GTK_WIDGET (tr_tool->info_dialog->shell), TRUE);
}
if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->prepare)
GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->prepare (tr_tool, gdisp);
}
static void
gimp_transform_tool_recalc (GimpTransformTool *tr_tool,
GimpDisplay *gdisp)
{
gimp_transform_tool_bounds (tr_tool, gdisp);
if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->recalc)
GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->recalc (tr_tool, gdisp);
}
static void
transform_reset_callback (GtkWidget *widget,
GimpTransformTool *tr_tool)
{
GimpTool *tool;
gint i;
tool = GIMP_TOOL (tr_tool);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* Restore the previous transformation info */
for (i = 0; i < TRAN_INFO_SIZE; i++)
tr_tool->trans_info[i] = tr_tool->old_trans_info[i];
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc (tr_tool, tool->gdisp);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
transform_cancel_callback (GtkWidget *widget,
GimpTransformTool *tr_tool)
{
gimp_transform_tool_reset (tr_tool);
}
static void
transform_ok_callback (GtkWidget *widget,
GimpTransformTool *tr_tool)
{
gimp_transform_tool_doit (tr_tool, GIMP_TOOL (tr_tool)->gdisp);
}
static void
gimp_transform_tool_notify_grid (GimpTransformOptions *options,
GParamSpec *pspec,
GimpTransformTool *tr_tool)
{
if (tr_tool->function == TRANSFORM_CREATING)
return;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tr_tool));
gimp_transform_tool_grid_recalc (tr_tool);
gimp_transform_tool_transform_bounding_box (tr_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
}
static void
gimp_transform_tool_notify_path (GimpTransformOptions *options,
GParamSpec *pspec,
GimpTransformTool *tr_tool)
{
if (tr_tool->function == TRANSFORM_CREATING)
return;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tr_tool));
tr_tool->show_path = options->show_path;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tr_tool));
}
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