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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"
#include "gui/gui-types.h"
#include "base/tile-manager.h"
#include "core/gimp.h"
#include "core/gimpchannel.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/gimplayer.h"
#include "core/gimpmarshal.h"
#include "core/gimptoolinfo.h"
#include "gui/info-dialog.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplay-foreach.h"
#include "display/gimpdisplayshell.h"
#include "tool_manager.h"
#include "transform_options.h"
#include "gimptransformtool.h"
#include "gimpperspectivetool.h"
#include "gimprotatetool.h"
#include "gimpscaletool.h"
#include "gimpsheartool.h"
#include "gimpfliptool.h"
#include "floating_sel.h"
#include "gimpprogress.h"
#include "undo.h"
#include "path_transform.h"
#include "libgimp/gimpintl.h"
#define HANDLE 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,
ToolAction 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_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_transform_tool_draw (GimpDrawTool *draw_tool);
static TileManager * gimp_transform_tool_transform (GimpTransformTool *tr_tool,
GimpDisplay *gdisp,
TransformState state);
static void gimp_transform_tool_reset (GimpTransformTool *tr_tool,
GimpDisplay *gdisp);
static void gimp_transform_tool_bounds (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_setup_grid (GimpTransformTool *tr_tool,
TransformOptions *options);
static void gimp_transform_tool_grid_recalc (GimpTransformTool *tr_tool);
static void transform_ok_callback (GtkWidget *widget,
gpointer data);
static void transform_reset_callback (GtkWidget *widget,
gpointer data);
/* variables */
static TransInfo old_trans_info;
InfoDialog *transform_info = NULL;
static gboolean transform_info_inited = FALSE;
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->cursor_update = gimp_transform_tool_cursor_update;
draw_class->draw = gimp_transform_tool_draw;
}
static void
gimp_transform_tool_init (GimpTransformTool *transform_tool)
{
GimpTool *tool;
gint i;
tool = GIMP_TOOL (transform_tool);
transform_tool->function = TRANSFORM_CREATING;
transform_tool->original = NULL;
for (i = 0; i < TRAN_INFO_SIZE; i++)
transform_tool->trans_info[i] = 0.0;
gimp_matrix3_identity (transform_tool->transform);
transform_tool->use_grid = TRUE;
transform_tool->ngx = 0;
transform_tool->ngy = 0;
transform_tool->grid_coords = NULL;
transform_tool->tgrid_coords = NULL;
tool->scroll_lock = TRUE; /* Disallow scrolling */
tool->preserve = FALSE; /* Don't preserve on drawable change */
}
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 (transform_info)
{
info_dialog_free (transform_info);
transform_info = NULL;
transform_info_inited = FALSE;
}
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,
ToolAction action,
GimpDisplay *gdisp)
{
GimpTransformTool *transform_tool;
transform_tool = GIMP_TRANSFORM_TOOL (tool);
switch (action)
{
case PAUSE:
break;
case RESUME:
gimp_transform_tool_recalc (transform_tool, gdisp);
break;
case HALT:
gimp_transform_tool_reset (transform_tool, gdisp);
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;
GimpDisplayShell *shell;
GimpDrawable *drawable;
gdouble dist;
gdouble closest_dist;
gint i;
gint off_x, off_y;
tr_tool = GIMP_TRANSFORM_TOOL (tool);
draw_tool = GIMP_DRAW_TOOL (tool);
shell = GIMP_DISPLAY_SHELL (gdisp->shell);
drawable = gimp_image_active_drawable (gdisp->gimage);
if (tr_tool->function == TRANSFORM_CREATING && tool->state == ACTIVE)
{
/* Save the current transformation info */
for (i = 0; i < TRAN_INFO_SIZE; i++)
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)
{
/* start drawing the bounding box and handles... */
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), shell->canvas->window);
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, HANDLE,
GIMP_HANDLE_CIRCLE,
FALSE))
{
tr_tool->function = TRANSFORM_HANDLE_CENTER;
}
/* Save the current pointer position */
tr_tool->lastx = tr_tool->startx = coords->x;
tr_tool->lasty = tr_tool->starty = coords->y;
gdk_pointer_grab (shell->canvas->window, FALSE,
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK,
NULL, NULL, time);
tool->state = ACTIVE;
return;
}
/* 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)))
{
if (gimage_mask_is_empty (gdisp->gimage) ||
gimage_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."));
tool->state = INACTIVE;
return;
}
/* If the tool is already active, clear the current state
* and reset
*/
if (tool->state == ACTIVE)
gimp_transform_tool_reset (tr_tool, gdisp);
/* Set the pointer to the active display */
tool->gdisp = gdisp;
tool->drawable = drawable;
tool->state = ACTIVE;
gdk_pointer_grab (shell->canvas->window, FALSE,
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK,
NULL, NULL, time);
/* 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 */
gimp_transform_tool_transform (tr_tool, gdisp, TRANSFORM_INIT);
if (transform_info && ! transform_info_inited)
{
GType tool_type;
tool_type =
gimp_context_get_tool (gimp_get_user_context (gdisp->gimage->gimp))->tool_type;
gimp_dialog_create_action_area
(GIMP_DIALOG (transform_info->shell),
/* FIXME: this does not belong here */
(tool_type == GIMP_TYPE_ROTATE_TOOL) ? _("Rotate") :
(tool_type == GIMP_TYPE_SCALE_TOOL) ? _("Scale") :
(tool_type == GIMP_TYPE_SHEAR_TOOL) ? _("Shear") :
(tool_type == GIMP_TYPE_PERSPECTIVE_TOOL) ? _("Transform") :
"EEK",
transform_ok_callback,
tool, NULL, NULL, TRUE, FALSE,
_("Reset"), transform_reset_callback,
tool, NULL, NULL, FALSE, FALSE,
NULL);
transform_info_inited = TRUE;
}
/* Recalculate the transform tool */
gimp_transform_tool_recalc (tr_tool, gdisp);
/* recall this function to find which handle we're dragging */
gimp_transform_tool_button_press (tool, coords, time, state, gdisp);
}
}
}
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)
return;
/* release of the pointer grab */
gdk_pointer_ungrab (time);
gdk_flush ();
/* 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) || GIMP_IS_FLIP_TOOL (tool))
{
gimp_transform_tool_doit (tr_tool, gdisp);
}
else
{
/* Only update the paths preview */
path_transform_current_path (gdisp->gimage,
tr_tool->transform, TRUE);
}
}
else
{
/* stop the current tool drawing process */
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] = old_trans_info[i];
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc (tr_tool, gdisp);
/* resume drawing the current tool */
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
/* Update the paths preview */
path_transform_current_path (gdisp->gimage,
tr_tool->transform, TRUE);
}
tool->state = INACTIVE;
}
static void
gimp_transform_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpTransformTool *transform_tool;
transform_tool = GIMP_TRANSFORM_TOOL (tool);
/* if we are creating or this tool is non-interactive, there is
* nothing to be done so exit.
*/
if (transform_tool->function == TRANSFORM_CREATING)
return;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
transform_tool->curx = coords->x;
transform_tool->cury = coords->y;
transform_tool->state = state;
/* recalculate the tool's transformation matrix */
gimp_transform_tool_transform (transform_tool, gdisp, TRANSFORM_MOTION);
transform_tool->lastx = transform_tool->curx;
transform_tool->lasty = transform_tool->cury;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_transform_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpDrawable *drawable;
GdkCursorType ctype = GDK_TOP_LEFT_ARROW;
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 (gimage_mask_is_empty (gdisp->gimage) ||
gimage_mask_value (gdisp->gimage, coords->x, coords->y))
{
ctype = GIMP_MOUSE_CURSOR;
}
}
}
gimp_display_shell_install_tool_cursor (GIMP_DISPLAY_SHELL (gdisp->shell),
ctype,
tool->tool_cursor,
GIMP_CURSOR_MODIFIER_NONE);
}
static void
gimp_transform_tool_draw (GimpDrawTool *draw_tool)
{
GimpTransformTool *tr_tool;
TransformOptions *options;
gint i, k, gci;
tr_tool = GIMP_TRANSFORM_TOOL (draw_tool);
options = (TransformOptions *) 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) /* FIXME!!! this doesn't belong here &&
((tool->type != PERSPECTIVE) ||
((tr_tool->transform[0][0] >=0.0) &&
(tr_tool->transform[1][1] >=0.0)) */ )
{
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, HANDLE,
GTK_ANCHOR_CENTER,
FALSE);
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx2, tr_tool->ty2,
HANDLE, HANDLE,
GTK_ANCHOR_CENTER,
FALSE);
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx3, tr_tool->ty3,
HANDLE, HANDLE,
GTK_ANCHOR_CENTER,
FALSE);
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_SQUARE,
tr_tool->tx4, tr_tool->ty4,
HANDLE, HANDLE,
GTK_ANCHOR_CENTER,
FALSE);
/* draw the center */
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_FILLED_CIRCLE,
tr_tool->tcx, tr_tool->tcy,
HANDLE, HANDLE,
GTK_ANCHOR_CENTER,
FALSE);
if (options->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_transform (GimpTransformTool *tool,
GimpDisplay *gdisp,
TransformState state)
{
g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (tool), NULL);
return GIMP_TRANSFORM_TOOL_GET_CLASS (tool)->transform (tool, gdisp, state);
}
static void
gimp_transform_tool_doit (GimpTransformTool *tr_tool,
GimpDisplay *gdisp)
{
GimpDisplayShell *shell;
GimpTool *tool;
TileManager *new_tiles;
TransformUndo *tu;
PathUndo *pundo;
gboolean new_layer;
gint i;
gimp_set_busy (gdisp->gimage->gimp);
tool = GIMP_TOOL (tr_tool);
shell = GIMP_DISPLAY_SHELL (gdisp->shell);
/* 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
*/
tool->preserve = TRUE;
/* Start a transform undo group */
undo_push_group_start (gdisp->gimage, TRANSFORM_CORE_UNDO);
/* 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);
pundo = path_transform_start_undo (gdisp->gimage);
/* Send the request for the transformation to the tool...
*/
new_tiles = gimp_transform_tool_transform (tr_tool, gdisp, TRANSFORM_FINISH);
gimp_transform_tool_transform (tr_tool, gdisp, TRANSFORM_INIT);
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);
/* create and initialize the transform_undo structure */
tu = g_new0 (TransformUndo, 1);
tu->tool_ID = tool->ID;
tu->tool_type = G_TYPE_FROM_INSTANCE (tool);
for (i = 0; i < TRAN_INFO_SIZE; i++)
tu->trans_info[i] = old_trans_info[i];
tu->original = NULL;
tu->path_undo = pundo;
/* 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);
undo_push_transform (gdisp->gimage, tu);
}
/* push the undo group end */
undo_push_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
*/
tool->preserve = FALSE;
gimp_unset_busy (gdisp->gimage->gimp);
gdisplays_flush ();
gimp_transform_tool_reset (tr_tool, gdisp);
tool->state = INACTIVE;
}
TileManager *
gimp_transform_tool_transform_tiles (GimpTransformTool *transform_tool,
const gchar *progress_text)
{
GimpTool *tool;
TransformOptions *options;
GimpProgress *progress;
TileManager *ret;
g_return_val_if_fail (GIMP_IS_TRANSFORM_TOOL (transform_tool), NULL);
g_return_val_if_fail (progress_text != NULL, NULL);
gtk_widget_set_sensitive (GTK_WIDGET (transform_info->shell), FALSE);
tool = GIMP_TOOL (transform_tool);
options = (TransformOptions *) tool->tool_info->tool_options;
progress = progress_start (tool->gdisp, progress_text, FALSE, NULL, NULL);
ret = gimp_drawable_transform_tiles_affine (gimp_image_active_drawable (tool->gdisp->gimage),
transform_tool->original,
options->smoothing,
options->clip,
transform_tool->transform,
options->direction,
progress ? progress_update_and_flush :
(GimpProgressFunc) NULL,
progress);
if (progress)
progress_end (progress);
return ret;
}
void
gimp_transform_tool_transform_bounding_box (GimpTransformTool *tr_tool)
{
GimpTool *tool;
gint i, k;
gint gci;
tool = GIMP_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)
{
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;
}
}
}
void
gimp_transform_tool_reset (GimpTransformTool *tr_tool,
GimpDisplay *gdisp)
{
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));
info_dialog_popdown (transform_info);
tool->state = INACTIVE;
tool->gdisp = NULL;
tool->drawable = NULL;
}
static void
gimp_transform_tool_bounds (GimpTransformTool *tr_tool,
GimpDisplay *gdisp)
{
TileManager *tiles;
GimpDrawable *drawable;
gint offset_x, offset_y;
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
{
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 = (tr_tool->x1 + tr_tool->x2) / 2;
tr_tool->cy = (tr_tool->y1 + tr_tool->y2) / 2;
if (tr_tool->use_grid)
{
/* changing the bounds invalidates any grid we may have */
gimp_transform_tool_grid_recalc (tr_tool);
}
}
void
gimp_transform_tool_grid_density_changed (GimpTransformTool *transform_tool)
{
if (transform_tool->function == TRANSFORM_CREATING)
return;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (transform_tool));
gimp_transform_tool_grid_recalc (transform_tool);
gimp_transform_tool_transform_bounding_box (transform_tool);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (transform_tool));
}
void
gimp_transform_tool_show_path_changed (GimpTransformTool *transform_tool,
gint type /* a truly undescriptive name */)
{
if (transform_tool->function == TRANSFORM_CREATING)
return;
if (type)
gimp_draw_tool_pause (GIMP_DRAW_TOOL (transform_tool));
else
gimp_draw_tool_resume (GIMP_DRAW_TOOL (transform_tool));
}
static void
gimp_transform_tool_grid_recalc (GimpTransformTool *tr_tool)
{
TransformOptions *options;
options = (TransformOptions *) 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;
}
if (options->show_grid)
{
gimp_transform_tool_setup_grid (tr_tool, options);
}
}
static void
gimp_transform_tool_setup_grid (GimpTransformTool *tr_tool,
TransformOptions *options)
{
GimpTool *tool;
gint i, gci;
gdouble *coords;
tool = GIMP_TOOL (tr_tool);
/* We use the gimp_transform_tool_grid_size function only here, even
* if the user changes the grid size in the middle of an
* operation, nothing happens.
*/
tr_tool->ngx = (tr_tool->x2 - tr_tool->x1) / options->grid_size;
if (tr_tool->ngx > 0)
tr_tool->ngx--;
tr_tool->ngy = (tr_tool->y2 - tr_tool->y1) / options->grid_size;
if (tr_tool->ngy > 0)
tr_tool->ngy--;
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;
}
}
static void
gimp_transform_tool_recalc (GimpTransformTool *tr_tool,
GimpDisplay *gdisp)
{
gimp_transform_tool_bounds (tr_tool, gdisp);
gimp_transform_tool_transform (tr_tool, gdisp, TRANSFORM_RECALC);
}
static void
transform_ok_callback (GtkWidget *widget,
gpointer data)
{
GimpTool *tool;
tool = GIMP_TOOL(data);
gimp_transform_tool_doit (GIMP_TRANSFORM_TOOL(tool), tool->gdisp);
}
static void
transform_reset_callback (GtkWidget *widget,
gpointer data)
{
GimpTransformTool *transform_tool;
GimpTool *tool;
gint i;
transform_tool = GIMP_TRANSFORM_TOOL (data);
tool = GIMP_TOOL (data);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* Restore the previous transformation info */
for (i = 0; i < TRAN_INFO_SIZE; i++)
transform_tool->trans_info [i] = old_trans_info [i];
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc (transform_tool, tool->gdisp);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
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