gimp/app/tools/gimpsamplepointtool.c

374 lines
13 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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpsamplepoint.h"
#include "core/gimpimage.h"
#include "core/gimpimage-sample-points.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-selection.h"
#include "display/gimpdisplayshell-transform.h"
#include "gimpsamplepointtool.h"
#include "gimptoolcontrol.h"
#include "tool_manager.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gimp_sample_point_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_sample_point_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_sample_point_tool_draw (GimpDrawTool *draw_tool);
static void gimp_sample_point_tool_start (GimpTool *parent_tool,
GimpDisplay *display,
GimpSamplePoint *sample_point);
G_DEFINE_TYPE (GimpSamplePointTool, gimp_sample_point_tool, GIMP_TYPE_DRAW_TOOL)
#define parent_class gimp_sample_point_tool_parent_class
static void
gimp_sample_point_tool_class_init (GimpSamplePointToolClass *klass)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
tool_class->button_release = gimp_sample_point_tool_button_release;
tool_class->motion = gimp_sample_point_tool_motion;
draw_tool_class->draw = gimp_sample_point_tool_draw;
}
static void
gimp_sample_point_tool_init (GimpSamplePointTool *sp_tool)
{
GimpTool *tool = GIMP_TOOL (sp_tool);
gimp_tool_control_set_snap_to (tool->control, FALSE);
gimp_tool_control_set_handle_empty_image (tool->control, TRUE);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_TOOL_CURSOR_MOVE);
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_tool_control_set_precision (tool->control,
GIMP_CURSOR_PRECISION_PIXEL_CENTER);
sp_tool->sample_point = NULL;
sp_tool->sample_point_x = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
sp_tool->sample_point_y = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
}
static void
gimp_sample_point_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpSamplePointTool *sp_tool = GIMP_SAMPLE_POINT_TOOL (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
gimp_tool_pop_status (tool, display);
gimp_tool_control_halt (tool->control);
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
if (release_type != GIMP_BUTTON_RELEASE_CANCEL)
{
gint width = gimp_image_get_width (image);
gint height = gimp_image_get_height (image);
if (sp_tool->sample_point_x == GIMP_SAMPLE_POINT_POSITION_UNDEFINED ||
sp_tool->sample_point_x < 0 ||
sp_tool->sample_point_x >= width ||
sp_tool->sample_point_y == GIMP_SAMPLE_POINT_POSITION_UNDEFINED ||
sp_tool->sample_point_y < 0 ||
sp_tool->sample_point_y >= height)
{
if (sp_tool->sample_point)
{
gimp_image_remove_sample_point (image,
sp_tool->sample_point, TRUE);
sp_tool->sample_point = NULL;
}
}
else
{
if (sp_tool->sample_point)
{
gimp_image_move_sample_point (image,
sp_tool->sample_point,
sp_tool->sample_point_x,
sp_tool->sample_point_y,
TRUE);
}
else
{
sp_tool->sample_point =
gimp_image_add_sample_point_at_pos (image,
sp_tool->sample_point_x,
sp_tool->sample_point_y,
TRUE);
}
}
gimp_image_flush (image);
}
gimp_display_shell_selection_resume (shell);
sp_tool->sample_point_x = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
sp_tool->sample_point_y = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
tool_manager_pop_tool (display->gimp);
g_object_unref (sp_tool);
{
GimpTool *active_tool = tool_manager_get_active (display->gimp);
if (GIMP_IS_DRAW_TOOL (active_tool))
gimp_draw_tool_pause (GIMP_DRAW_TOOL (active_tool));
tool_manager_oper_update_active (display->gimp, coords, state,
TRUE, display);
tool_manager_cursor_update_active (display->gimp, coords, state,
display);
if (GIMP_IS_DRAW_TOOL (active_tool))
gimp_draw_tool_resume (GIMP_DRAW_TOOL (active_tool));
}
}
static void
gimp_sample_point_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpSamplePointTool *sp_tool = GIMP_SAMPLE_POINT_TOOL (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
gboolean delete_point = FALSE;
gint tx, ty;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
gimp_display_shell_transform_xy (shell,
coords->x, coords->y,
&tx, &ty);
if (tx < 0 || tx >= shell->disp_width ||
ty < 0 || ty >= shell->disp_height)
{
sp_tool->sample_point_x = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
sp_tool->sample_point_y = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
delete_point = TRUE;
}
else
{
GimpImage *image = gimp_display_get_image (display);
gint width = gimp_image_get_width (image);
gint height = gimp_image_get_height (image);
sp_tool->sample_point_x = floor (coords->x);
sp_tool->sample_point_y = floor (coords->y);
if (sp_tool->sample_point_x < 0 ||
sp_tool->sample_point_x >= height ||
sp_tool->sample_point_y < 0 ||
sp_tool->sample_point_y >= width)
{
delete_point = TRUE;
}
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
gimp_tool_pop_status (tool, display);
if (delete_point)
{
gimp_tool_push_status (tool, display,
sp_tool->sample_point ?
_("Remove Sample Point") :
_("Cancel Sample Point"));
}
else if (sp_tool->sample_point)
{
gimp_tool_push_status_coords (tool, display,
gimp_tool_control_get_precision (tool->control),
_("Move Sample Point: "),
sp_tool->sample_point_x -
sp_tool->sample_point_old_x,
", ",
sp_tool->sample_point_y -
sp_tool->sample_point_old_y,
NULL);
}
else
{
gimp_tool_push_status_coords (tool, display,
gimp_tool_control_get_precision (tool->control),
_("Add Sample Point: "),
sp_tool->sample_point_x,
", ",
sp_tool->sample_point_y,
NULL);
}
}
static void
gimp_sample_point_tool_draw (GimpDrawTool *draw_tool)
{
GimpSamplePointTool *sp_tool = GIMP_SAMPLE_POINT_TOOL (draw_tool);
if (sp_tool->sample_point_x != GIMP_SAMPLE_POINT_POSITION_UNDEFINED &&
sp_tool->sample_point_y != GIMP_SAMPLE_POINT_POSITION_UNDEFINED)
{
gimp_draw_tool_add_crosshair (draw_tool,
sp_tool->sample_point_x,
sp_tool->sample_point_y);
}
}
static void
gimp_sample_point_tool_start (GimpTool *parent_tool,
GimpDisplay *display,
GimpSamplePoint *sample_point)
{
GimpSamplePointTool *sp_tool;
GimpTool *tool;
sp_tool = g_object_new (GIMP_TYPE_SAMPLE_POINT_TOOL,
"tool-info", parent_tool->tool_info,
NULL);
tool = GIMP_TOOL (sp_tool);
gimp_display_shell_selection_pause (gimp_display_get_shell (display));
if (sample_point)
{
sp_tool->sample_point = sample_point;
gimp_sample_point_get_position (sample_point,
&sp_tool->sample_point_old_x,
&sp_tool->sample_point_old_y);
sp_tool->sample_point_x = sp_tool->sample_point_old_x;
sp_tool->sample_point_y = sp_tool->sample_point_old_y;
}
else
{
sp_tool->sample_point = NULL;
sp_tool->sample_point_old_x = 0;
sp_tool->sample_point_old_y = 0;
sp_tool->sample_point_x = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
sp_tool->sample_point_y = GIMP_SAMPLE_POINT_POSITION_UNDEFINED;
}
gimp_tool_set_cursor (tool, display,
GIMP_CURSOR_MOUSE,
GIMP_TOOL_CURSOR_COLOR_PICKER,
GIMP_CURSOR_MODIFIER_MOVE);
tool_manager_push_tool (display->gimp, tool);
tool->display = display;
gimp_tool_control_activate (tool->control);
gimp_draw_tool_start (GIMP_DRAW_TOOL (sp_tool), display);
if (sp_tool->sample_point)
{
gimp_tool_push_status_coords (tool, display,
gimp_tool_control_get_precision (tool->control),
_("Move Sample Point: "),
sp_tool->sample_point_x -
sp_tool->sample_point_old_x,
", ",
sp_tool->sample_point_y -
sp_tool->sample_point_old_y,
NULL);
}
else
{
gimp_tool_push_status_coords (tool, display,
gimp_tool_control_get_precision (tool->control),
_("Add Sample Point: "),
sp_tool->sample_point_x,
", ",
sp_tool->sample_point_y,
NULL);
}
}
/* public functions */
void
gimp_sample_point_tool_start_new (GimpTool *parent_tool,
GimpDisplay *display)
{
g_return_if_fail (GIMP_IS_TOOL (parent_tool));
g_return_if_fail (GIMP_IS_DISPLAY (display));
gimp_sample_point_tool_start (parent_tool, display, NULL);
}
void
gimp_sample_point_tool_start_edit (GimpTool *parent_tool,
GimpDisplay *display,
GimpSamplePoint *sample_point)
{
g_return_if_fail (GIMP_IS_TOOL (parent_tool));
g_return_if_fail (GIMP_IS_DISPLAY (display));
g_return_if_fail (GIMP_IS_SAMPLE_POINT (sample_point));
gimp_sample_point_tool_start (parent_tool, display, sample_point);
}