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gimp/app/tools/gimpfliptool.c

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/* 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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "config/gimpdisplayconfig.h"
#include "core/gimpdrawable-transform.h"
#include "core/gimpguide.h"
#include "core/gimpimage.h"
#include "core/gimpimage-pick-item.h"
#include "core/gimpitem-linked.h"
#include "core/gimplayer.h"
#include "core/gimplayermask.h"
#include "core/gimppickable.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpcanvasitem.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-appearance.h"
#include "gimpflipoptions.h"
#include "gimpfliptool.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gimp_flip_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display);
static void gimp_flip_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display);
static void gimp_flip_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display);
static void gimp_flip_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static void gimp_flip_tool_draw (GimpDrawTool *draw_tool);
static gchar * gimp_flip_tool_get_undo_desc (GimpTransformTool *tr_tool);
static GeglBuffer * gimp_flip_tool_transform (GimpTransformTool *tr_tool,
GimpItem *item,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpColorProfile **buffer_profile,
gint *new_offset_x,
gint *new_offset_y);
static GimpOrientationType gimp_flip_tool_get_flip_type (GimpFlipTool *flip);
G_DEFINE_TYPE (GimpFlipTool, gimp_flip_tool, GIMP_TYPE_TRANSFORM_TOOL)
#define parent_class gimp_flip_tool_parent_class
void
gimp_flip_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_FLIP_TOOL,
GIMP_TYPE_FLIP_OPTIONS,
gimp_flip_options_gui,
GIMP_CONTEXT_PROP_MASK_BACKGROUND,
"gimp-flip-tool",
_("Flip"),
_("Flip Tool: "
"Reverse the layer, selection or path horizontally or vertically"),
N_("_Flip"), "<shift>F",
NULL, GIMP_HELP_TOOL_FLIP,
GIMP_ICON_TOOL_FLIP,
data);
}
static void
gimp_flip_tool_class_init (GimpFlipToolClass *klass)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
GimpTransformToolClass *tr_class = GIMP_TRANSFORM_TOOL_CLASS (klass);
tool_class->button_press = gimp_flip_tool_button_press;
tool_class->modifier_key = gimp_flip_tool_modifier_key;
tool_class->oper_update = gimp_flip_tool_oper_update;
tool_class->cursor_update = gimp_flip_tool_cursor_update;
draw_tool_class->draw = gimp_flip_tool_draw;
tr_class->get_undo_desc = gimp_flip_tool_get_undo_desc;
tr_class->transform = gimp_flip_tool_transform;
tr_class->undo_desc = C_("undo-type", "Flip");
tr_class->progress_text = _("Flipping");
}
static void
gimp_flip_tool_init (GimpFlipTool *flip_tool)
{
GimpTool *tool = GIMP_TOOL (flip_tool);
gimp_tool_control_set_snap_to (tool->control, FALSE);
gimp_tool_control_set_precision (tool->control,
GIMP_CURSOR_PRECISION_PIXEL_CENTER);
gimp_tool_control_set_cursor (tool->control, GIMP_CURSOR_MOUSE);
gimp_tool_control_set_toggle_cursor (tool->control, GIMP_CURSOR_MOUSE);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_TOOL_CURSOR_FLIP_HORIZONTAL);
gimp_tool_control_set_toggle_tool_cursor (tool->control,
GIMP_TOOL_CURSOR_FLIP_VERTICAL);
flip_tool->guide = NULL;
}
static void
gimp_flip_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
gimp_transform_tool_transform (tr_tool, display);
}
static void
gimp_flip_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display)
{
GimpFlipOptions *options = GIMP_FLIP_TOOL_GET_OPTIONS (tool);
if (key == gimp_get_toggle_behavior_mask ())
{
switch (options->flip_type)
{
case GIMP_ORIENTATION_HORIZONTAL:
g_object_set (options,
"flip-type", GIMP_ORIENTATION_VERTICAL,
NULL);
break;
case GIMP_ORIENTATION_VERTICAL:
g_object_set (options,
"flip-type", GIMP_ORIENTATION_HORIZONTAL,
NULL);
break;
default:
break;
}
}
}
static void
gimp_flip_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpFlipTool *flip = GIMP_FLIP_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
GimpFlipOptions *options = GIMP_FLIP_TOOL_GET_OPTIONS (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
GimpGuide *guide = NULL;
if (gimp_display_shell_get_show_guides (shell) &&
proximity)
{
gint snap_distance = display->config->snap_distance;
guide = gimp_image_pick_guide (image, coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance));
}
if (flip->guide != guide ||
(guide && ! gimp_draw_tool_is_active (draw_tool)))
{
gimp_draw_tool_pause (draw_tool);
if (gimp_draw_tool_is_active (draw_tool) &&
draw_tool->display != display)
gimp_draw_tool_stop (draw_tool);
flip->guide = guide;
if (! gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_start (draw_tool, display);
gimp_draw_tool_resume (draw_tool);
}
gtk_widget_set_sensitive (options->direction_frame, guide == NULL);
GIMP_TOOL_CLASS (parent_class)->oper_update (tool,
coords, state, proximity,
display);
}
static void
gimp_flip_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
GimpFlipTool *flip = GIMP_FLIP_TOOL (tool);
if (! gimp_transform_tool_check_active_item (tr_tool, display, NULL))
{
gimp_tool_set_cursor (tool, display,
gimp_tool_control_get_cursor (tool->control),
gimp_tool_control_get_tool_cursor (tool->control),
GIMP_CURSOR_MODIFIER_BAD);
return;
}
gimp_tool_control_set_toggled (tool->control,
gimp_flip_tool_get_flip_type (flip) ==
GIMP_ORIENTATION_VERTICAL);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
gimp_flip_tool_draw (GimpDrawTool *draw_tool)
{
GimpFlipTool *flip = GIMP_FLIP_TOOL (draw_tool);
if (flip->guide)
{
GimpCanvasItem *item;
GimpGuideStyle style;
style = gimp_guide_get_style (flip->guide);
item = gimp_draw_tool_add_guide (draw_tool,
gimp_guide_get_orientation (flip->guide),
gimp_guide_get_position (flip->guide),
style);
gimp_canvas_item_set_highlight (item, TRUE);
}
}
static gchar *
gimp_flip_tool_get_undo_desc (GimpTransformTool *tr_tool)
{
GimpFlipTool *flip = GIMP_FLIP_TOOL (tr_tool);
switch (gimp_flip_tool_get_flip_type (flip))
{
case GIMP_ORIENTATION_HORIZONTAL:
return g_strdup (C_("undo-type", "Flip horizontally"));
case GIMP_ORIENTATION_VERTICAL:
return g_strdup (C_("undo-type", "Flip vertically"));
default:
/* probably this is not actually reached today, but
* could be if someone defined FLIP_DIAGONAL, say...
*/
return GIMP_TRANSFORM_TOOL_CLASS (parent_class)->get_undo_desc (tr_tool);
}
}
static GeglBuffer *
gimp_flip_tool_transform (GimpTransformTool *tr_tool,
GimpItem *active_item,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpColorProfile **buffer_profile,
gint *new_offset_x,
gint *new_offset_y)
{
GimpFlipTool *flip = GIMP_FLIP_TOOL (tr_tool);
GimpFlipOptions *options = GIMP_FLIP_TOOL_GET_OPTIONS (tr_tool);
GimpTransformOptions *tr_options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
GimpContext *context = GIMP_CONTEXT (options);
GimpOrientationType flip_type = GIMP_ORIENTATION_UNKNOWN;
gdouble axis = 0.0;
gboolean clip_result = FALSE;
GeglBuffer *ret = NULL;
flip_type = gimp_flip_tool_get_flip_type (flip);
if (flip->guide)
{
axis = gimp_guide_get_position (flip->guide);
}
else
{
switch (flip_type)
{
case GIMP_ORIENTATION_HORIZONTAL:
axis = ((gdouble) tr_tool->x1 +
(gdouble) (tr_tool->x2 - tr_tool->x1) / 2.0);
break;
case GIMP_ORIENTATION_VERTICAL:
axis = ((gdouble) tr_tool->y1 +
(gdouble) (tr_tool->y2 - tr_tool->y1) / 2.0);
break;
default:
break;
}
}
switch (tr_options->clip)
{
case GIMP_TRANSFORM_RESIZE_ADJUST:
clip_result = FALSE;
break;
case GIMP_TRANSFORM_RESIZE_CLIP:
clip_result = TRUE;
break;
default:
g_return_val_if_reached (NULL);
}
if (orig_buffer)
{
/* this happens when transforming a selection cut out of a
* normal drawable, or the selection
*/
/* always clip the selection and unfloated channels
* so they keep their size
*/
if (GIMP_IS_CHANNEL (active_item) &&
! babl_format_has_alpha (gegl_buffer_get_format (orig_buffer)))
clip_result = TRUE;
ret = gimp_drawable_transform_buffer_flip (GIMP_DRAWABLE (active_item),
context,
orig_buffer,
orig_offset_x,
orig_offset_y,
flip_type, axis,
clip_result,
buffer_profile,
new_offset_x,
new_offset_y);
}
else
{
/* this happens for entire drawables, paths and layer groups */
/* always clip layer masks so they keep their size
*/
if (GIMP_IS_CHANNEL (active_item))
clip_result = TRUE;
if (gimp_item_get_linked (active_item))
{
gimp_item_linked_flip (active_item, context,
flip_type, axis, clip_result);
}
else
{
gimp_item_flip (active_item, context,
flip_type, axis, clip_result);
}
}
return ret;
}
static GimpOrientationType
gimp_flip_tool_get_flip_type (GimpFlipTool *flip)
{
GimpFlipOptions *options = GIMP_FLIP_TOOL_GET_OPTIONS (flip);
if (flip->guide)
{
switch (gimp_guide_get_orientation (flip->guide))
{
case GIMP_ORIENTATION_HORIZONTAL:
return GIMP_ORIENTATION_VERTICAL;
case GIMP_ORIENTATION_VERTICAL:
return GIMP_ORIENTATION_HORIZONTAL;
default:
return gimp_guide_get_orientation (flip->guide);
}
}
else
{
return options->flip_type;
}
}
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