mirror of https://github.com/GNOME/gimp.git
592 lines
16 KiB
C
592 lines
16 KiB
C
/* The GIMP -- an 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 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 <stdlib.h>
|
|
#include "gdk/gdkkeysyms.h"
|
|
#include "appenv.h"
|
|
#include "gdisplay.h"
|
|
#include "gimage_mask.h"
|
|
#include "edit_selection.h"
|
|
#include "floating_sel.h"
|
|
#include "rect_select.h"
|
|
#include "rect_selectP.h"
|
|
#include "selection_options.h"
|
|
#include "cursorutil.h"
|
|
|
|
#include "config.h"
|
|
#include "libgimp/gimpunitmenu.h"
|
|
#include "libgimp/gimpintl.h"
|
|
|
|
#define STATUSBAR_SIZE 128
|
|
|
|
|
|
/* the rectangular selection tool options */
|
|
static SelectionOptions *rect_options = NULL;
|
|
|
|
/* in gimp, ellipses are rectangular, too ;) */
|
|
extern SelectionOptions *ellipse_options;
|
|
extern void ellipse_select (GImage *, int, int, int, int, int, int, int, double);
|
|
|
|
static void selection_tool_update_op_state(RectSelect *rect_sel, int x, int y,
|
|
int state, GDisplay *gdisp);
|
|
|
|
/*************************************/
|
|
/* Rectangular selection apparatus */
|
|
|
|
void
|
|
rect_select (GimpImage *gimage,
|
|
int x,
|
|
int y,
|
|
int w,
|
|
int h,
|
|
int op,
|
|
int feather,
|
|
double feather_radius)
|
|
{
|
|
Channel * new_mask;
|
|
|
|
/* if applicable, replace the current selection */
|
|
if (op == SELECTION_REPLACE)
|
|
gimage_mask_clear (gimage);
|
|
else
|
|
gimage_mask_undo (gimage);
|
|
|
|
/* if feathering for rect, make a new mask with the
|
|
* rectangle and feather that with the old mask
|
|
*/
|
|
if (feather)
|
|
{
|
|
new_mask = channel_new_mask (gimage, gimage->width, gimage->height);
|
|
channel_combine_rect (new_mask, ADD, x, y, w, h);
|
|
channel_feather (new_mask, gimage_get_mask (gimage),
|
|
feather_radius,
|
|
feather_radius,
|
|
op, 0, 0);
|
|
channel_delete (new_mask);
|
|
}
|
|
else if (op == SELECTION_INTERSECT)
|
|
{
|
|
new_mask = channel_new_mask (gimage, gimage->width, gimage->height);
|
|
channel_combine_rect (new_mask, ADD, x, y, w, h);
|
|
channel_combine_mask (gimage_get_mask (gimage), new_mask, op, 0, 0);
|
|
channel_delete (new_mask);
|
|
}
|
|
else
|
|
channel_combine_rect (gimage_get_mask (gimage), op, x, y, w, h);
|
|
}
|
|
|
|
void
|
|
rect_select_button_press (Tool *tool,
|
|
GdkEventButton *bevent,
|
|
gpointer gdisp_ptr)
|
|
{
|
|
GDisplay * gdisp;
|
|
RectSelect * rect_sel;
|
|
gchar select_mode[STATUSBAR_SIZE];
|
|
int x, y;
|
|
GUnit unit = UNIT_PIXEL;
|
|
double unit_factor;
|
|
|
|
gdisp = (GDisplay *) gdisp_ptr;
|
|
rect_sel = (RectSelect *) tool->private;
|
|
|
|
gdisplay_untransform_coords (gdisp, bevent->x, bevent->y, &x, &y, TRUE, 0);
|
|
|
|
rect_sel->x = x;
|
|
rect_sel->y = y;
|
|
switch (tool->type)
|
|
{
|
|
case RECT_SELECT:
|
|
rect_sel->fixed_size = rect_options->fixed_size;
|
|
rect_sel->fixed_width = rect_options->fixed_width;
|
|
rect_sel->fixed_height = rect_options->fixed_height;
|
|
unit = rect_options->fixed_unit;
|
|
break;
|
|
case ELLIPSE_SELECT:
|
|
rect_sel->fixed_size = ellipse_options->fixed_size;
|
|
rect_sel->fixed_width = ellipse_options->fixed_width;
|
|
rect_sel->fixed_height = ellipse_options->fixed_height;
|
|
unit = ellipse_options->fixed_unit;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (unit)
|
|
{
|
|
case UNIT_PIXEL:
|
|
break;
|
|
case UNIT_PERCENT:
|
|
rect_sel->fixed_width =
|
|
gdisp->gimage->width * rect_sel->fixed_width / 100;
|
|
rect_sel->fixed_height =
|
|
gdisp->gimage->height * rect_sel->fixed_height / 100;
|
|
break;
|
|
default:
|
|
unit_factor = gimp_unit_get_factor (unit);
|
|
rect_sel->fixed_width =
|
|
rect_sel->fixed_width * gdisp->gimage->xresolution / unit_factor;
|
|
rect_sel->fixed_height =
|
|
rect_sel->fixed_height * gdisp->gimage->yresolution / unit_factor;
|
|
break;
|
|
}
|
|
|
|
rect_sel->fixed_width = MAX (1, rect_sel->fixed_width);
|
|
rect_sel->fixed_height = MAX (1, rect_sel->fixed_height);
|
|
|
|
rect_sel->w = 0;
|
|
rect_sel->h = 0;
|
|
|
|
rect_sel->center = FALSE;
|
|
|
|
gdk_pointer_grab (gdisp->canvas->window, FALSE,
|
|
GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON1_MOTION_MASK |
|
|
GDK_BUTTON_RELEASE_MASK,
|
|
NULL, NULL, bevent->time);
|
|
|
|
tool->state = ACTIVE;
|
|
tool->gdisp_ptr = gdisp_ptr;
|
|
|
|
switch (rect_sel->op)
|
|
{
|
|
case SELECTION_MOVE_MASK:
|
|
init_edit_selection (tool, gdisp_ptr, bevent, MaskTranslate);
|
|
return;
|
|
case SELECTION_MOVE:
|
|
init_edit_selection (tool, gdisp_ptr, bevent, MaskToLayerTranslate);
|
|
return;
|
|
}
|
|
|
|
/* initialize the statusbar display */
|
|
rect_sel->context_id =
|
|
gtk_statusbar_get_context_id (GTK_STATUSBAR (gdisp->statusbar), "selection");
|
|
switch (rect_sel->op)
|
|
{
|
|
case SELECTION_ADD:
|
|
g_snprintf (select_mode, STATUSBAR_SIZE, _("Selection: ADD"));
|
|
break;
|
|
case SELECTION_SUB:
|
|
g_snprintf (select_mode, STATUSBAR_SIZE, _("Selection: SUBTRACT"));
|
|
break;
|
|
case SELECTION_INTERSECT:
|
|
g_snprintf (select_mode, STATUSBAR_SIZE, _("Selection: INTERSECT"));
|
|
break;
|
|
case SELECTION_REPLACE:
|
|
g_snprintf (select_mode, STATUSBAR_SIZE, _("Selection: REPLACE"));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
gtk_statusbar_push (GTK_STATUSBAR (gdisp->statusbar),
|
|
rect_sel->context_id, select_mode);
|
|
|
|
draw_core_start (rect_sel->core, gdisp->canvas->window, tool);
|
|
}
|
|
|
|
void
|
|
rect_select_button_release (Tool *tool,
|
|
GdkEventButton *bevent,
|
|
gpointer gdisp_ptr)
|
|
{
|
|
RectSelect * rect_sel;
|
|
GDisplay * gdisp;
|
|
int x1, y1, x2, y2, w, h;
|
|
|
|
gdisp = (GDisplay *) gdisp_ptr;
|
|
rect_sel = (RectSelect *) tool->private;
|
|
|
|
gdk_pointer_ungrab (bevent->time);
|
|
gdk_flush ();
|
|
|
|
gtk_statusbar_pop (GTK_STATUSBAR (gdisp->statusbar), rect_sel->context_id);
|
|
|
|
draw_core_stop (rect_sel->core, tool);
|
|
tool->state = INACTIVE;
|
|
|
|
/* First take care of the case where the user "cancels" the action */
|
|
if (! (bevent->state & GDK_BUTTON3_MASK))
|
|
{
|
|
x1 = (rect_sel->w < 0) ? rect_sel->x + rect_sel->w : rect_sel->x;
|
|
y1 = (rect_sel->h < 0) ? rect_sel->y + rect_sel->h : rect_sel->y;
|
|
w = (rect_sel->w < 0) ? -rect_sel->w : rect_sel->w;
|
|
h = (rect_sel->h < 0) ? -rect_sel->h : rect_sel->h;
|
|
|
|
if ((!w || !h) && !rect_sel->fixed_size)
|
|
{
|
|
/* If there is a floating selection, anchor it */
|
|
if (gimage_floating_sel (gdisp->gimage))
|
|
floating_sel_anchor (gimage_floating_sel (gdisp->gimage));
|
|
/* Otherwise, clear the selection mask */
|
|
else
|
|
gimage_mask_clear (gdisp->gimage);
|
|
|
|
gdisplays_flush ();
|
|
return;
|
|
}
|
|
|
|
x2 = x1 + w;
|
|
y2 = y1 + h;
|
|
|
|
switch (tool->type)
|
|
{
|
|
case RECT_SELECT:
|
|
rect_select (gdisp->gimage,
|
|
x1, y1, (x2 - x1), (y2 - y1),
|
|
rect_sel->op,
|
|
rect_options->feather,
|
|
rect_options->feather_radius);
|
|
break;
|
|
|
|
case ELLIPSE_SELECT:
|
|
ellipse_select (gdisp->gimage,
|
|
x1, y1, (x2 - x1), (y2 - y1),
|
|
rect_sel->op,
|
|
ellipse_options->antialias,
|
|
ellipse_options->feather,
|
|
ellipse_options->feather_radius);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* show selection on all views */
|
|
gdisplays_flush ();
|
|
}
|
|
}
|
|
|
|
void
|
|
rect_select_motion (Tool *tool,
|
|
GdkEventMotion *mevent,
|
|
gpointer gdisp_ptr)
|
|
{
|
|
RectSelect * rect_sel;
|
|
GDisplay * gdisp;
|
|
gchar size[STATUSBAR_SIZE];
|
|
int ox, oy;
|
|
int x, y;
|
|
int w, h, s;
|
|
int tw, th;
|
|
double ratio;
|
|
|
|
if (tool->state != ACTIVE)
|
|
return;
|
|
|
|
gdisp = (GDisplay *) gdisp_ptr;
|
|
rect_sel = (RectSelect *) tool->private;
|
|
|
|
draw_core_pause (rect_sel->core, tool);
|
|
|
|
/* Calculate starting point */
|
|
|
|
if (rect_sel->center)
|
|
{
|
|
ox = rect_sel->x + rect_sel->w / 2;
|
|
oy = rect_sel->y + rect_sel->h / 2;
|
|
}
|
|
else
|
|
{
|
|
ox = rect_sel->x;
|
|
oy = rect_sel->y;
|
|
}
|
|
|
|
gdisplay_untransform_coords (gdisp, mevent->x, mevent->y, &x, &y, TRUE, 0);
|
|
if (rect_sel->fixed_size) {
|
|
if (mevent->state & GDK_SHIFT_MASK) {
|
|
ratio = (double)(rect_sel->fixed_height /
|
|
(double)rect_sel->fixed_width);
|
|
tw = x - ox;
|
|
th = y - oy;
|
|
/*
|
|
* This is probably an inefficient way to do it, but it gives
|
|
* nicer, more predictable results than the original agorithm
|
|
*/
|
|
|
|
if ((abs(th) < (ratio * abs(tw))) && (abs(tw) > (abs(th) / ratio)))
|
|
{
|
|
w = tw;
|
|
h = (int)(tw * ratio);
|
|
/* h should have the sign of th */
|
|
if ((th < 0 && h > 0) || (th > 0 && h < 0))
|
|
h = -h;
|
|
}
|
|
else
|
|
{
|
|
h = th;
|
|
w = (int)(th / ratio);
|
|
/* w should have the sign of tw */
|
|
if ((tw < 0 && w > 0) || (tw > 0 && w < 0))
|
|
w = -w;
|
|
}
|
|
} else {
|
|
w = (x - ox > 0 ? rect_sel->fixed_width : -rect_sel->fixed_width);
|
|
h = (y - oy > 0 ? rect_sel->fixed_height : -rect_sel->fixed_height);
|
|
}
|
|
} else {
|
|
w = (x - ox);
|
|
h = (y - oy);
|
|
}
|
|
|
|
/* If the shift key is down, then make the rectangle square (or ellipse circular) */
|
|
if ((mevent->state & GDK_SHIFT_MASK) && !rect_sel->fixed_size)
|
|
{
|
|
s = MAXIMUM(abs(w), abs(h));
|
|
|
|
if (w < 0)
|
|
w = -s;
|
|
else
|
|
w = s;
|
|
|
|
if (h < 0)
|
|
h = -s;
|
|
else
|
|
h = s;
|
|
}
|
|
|
|
/* If the control key is down, create the selection from the center out */
|
|
if (mevent->state & GDK_CONTROL_MASK)
|
|
{
|
|
if (rect_sel->fixed_size)
|
|
{
|
|
if (mevent->state & GDK_SHIFT_MASK)
|
|
{
|
|
rect_sel->x = ox - w;
|
|
rect_sel->y = oy - h;
|
|
rect_sel->w = w * 2;
|
|
rect_sel->h = h * 2;
|
|
}
|
|
else
|
|
{
|
|
rect_sel->x = ox - w / 2;
|
|
rect_sel->y = oy - h / 2;
|
|
rect_sel->w = w;
|
|
rect_sel->h = h;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
w = abs(w);
|
|
h = abs(h);
|
|
|
|
rect_sel->x = ox - w;
|
|
rect_sel->y = oy - h;
|
|
rect_sel->w = 2 * w + 1;
|
|
rect_sel->h = 2 * h + 1;
|
|
}
|
|
rect_sel->center = TRUE;
|
|
}
|
|
else
|
|
{
|
|
rect_sel->x = ox;
|
|
rect_sel->y = oy;
|
|
rect_sel->w = w;
|
|
rect_sel->h = h;
|
|
|
|
rect_sel->center = FALSE;
|
|
}
|
|
|
|
gtk_statusbar_pop (GTK_STATUSBAR (gdisp->statusbar), rect_sel->context_id);
|
|
if (gdisp->dot_for_dot)
|
|
{
|
|
g_snprintf (size, STATUSBAR_SIZE, gdisp->cursor_format_str,
|
|
_("Selection: "), abs(rect_sel->w), " x ", abs(rect_sel->h));
|
|
}
|
|
else /* show real world units */
|
|
{
|
|
gdouble unit_factor = gimp_unit_get_factor (gdisp->gimage->unit);
|
|
|
|
g_snprintf (size, STATUSBAR_SIZE, gdisp->cursor_format_str,
|
|
_("Selection: "),
|
|
(gdouble) abs(rect_sel->w) * unit_factor /
|
|
gdisp->gimage->xresolution,
|
|
" x ",
|
|
(gdouble) abs(rect_sel->h) * unit_factor /
|
|
gdisp->gimage->yresolution);
|
|
}
|
|
gtk_statusbar_push (GTK_STATUSBAR (gdisp->statusbar), rect_sel->context_id,
|
|
size);
|
|
|
|
draw_core_resume (rect_sel->core, tool);
|
|
}
|
|
|
|
void
|
|
rect_select_draw (Tool *tool)
|
|
{
|
|
GDisplay * gdisp;
|
|
RectSelect * rect_sel;
|
|
int x1, y1, x2, y2;
|
|
|
|
gdisp = (GDisplay *) tool->gdisp_ptr;
|
|
rect_sel = (RectSelect *) tool->private;
|
|
|
|
x1 = MINIMUM (rect_sel->x, rect_sel->x + rect_sel->w);
|
|
y1 = MINIMUM (rect_sel->y, rect_sel->y + rect_sel->h);
|
|
x2 = MAXIMUM (rect_sel->x, rect_sel->x + rect_sel->w);
|
|
y2 = MAXIMUM (rect_sel->y, rect_sel->y + rect_sel->h);
|
|
|
|
gdisplay_transform_coords (gdisp, x1, y1, &x1, &y1, 0);
|
|
gdisplay_transform_coords (gdisp, x2, y2, &x2, &y2, 0);
|
|
|
|
gdk_draw_rectangle (rect_sel->core->win,
|
|
rect_sel->core->gc, 0,
|
|
x1, y1, (x2 - x1), (y2 - y1));
|
|
}
|
|
|
|
static void
|
|
selection_tool_update_op_state (RectSelect *rect_sel,
|
|
int x,
|
|
int y,
|
|
int state,
|
|
GDisplay *gdisp)
|
|
{
|
|
if (active_tool->state == ACTIVE)
|
|
return;
|
|
|
|
if (state & GDK_MOD1_MASK &&
|
|
!(layer_is_floating_sel (gimage_get_active_layer (gdisp->gimage))))
|
|
rect_sel->op = SELECTION_MOVE_MASK; /* move just the selection mask */
|
|
else if (layer_is_floating_sel (gimage_get_active_layer (gdisp->gimage)) ||
|
|
(!(state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)) &&
|
|
gdisplay_mask_value (gdisp, x, y)))
|
|
rect_sel->op = SELECTION_MOVE; /* move the selection */
|
|
else if ((state & GDK_SHIFT_MASK) &&
|
|
!(state & GDK_CONTROL_MASK))
|
|
rect_sel->op = SELECTION_ADD; /* add to the selection */
|
|
else if ((state & GDK_CONTROL_MASK) &&
|
|
!(state & GDK_SHIFT_MASK))
|
|
rect_sel->op = SELECTION_SUB; /* subtract from the selection */
|
|
else if ((state & GDK_CONTROL_MASK) &&
|
|
(state & GDK_SHIFT_MASK))
|
|
rect_sel->op = SELECTION_INTERSECT;/* intersect with selection */
|
|
else
|
|
rect_sel->op = SELECTION_REPLACE; /* replace the selection */
|
|
}
|
|
|
|
void
|
|
rect_select_cursor_update (Tool *tool,
|
|
GdkEventMotion *mevent,
|
|
gpointer gdisp_ptr)
|
|
{
|
|
int active;
|
|
RectSelect *rect_sel;
|
|
GDisplay *gdisp;
|
|
gdisp = (GDisplay *)gdisp_ptr;
|
|
active = (active_tool->state == ACTIVE);
|
|
rect_sel = (RectSelect*)tool->private;
|
|
|
|
selection_tool_update_op_state (rect_sel, mevent->x, mevent->y,
|
|
mevent->state, gdisp_ptr);
|
|
|
|
switch (rect_sel->op)
|
|
{
|
|
case SELECTION_ADD:
|
|
gdisplay_install_tool_cursor (gdisp, GIMP_MOUSE1P_CURSOR);
|
|
break;
|
|
case SELECTION_SUB:
|
|
gdisplay_install_tool_cursor (gdisp, GIMP_MOUSE1M_CURSOR);
|
|
break;
|
|
case SELECTION_INTERSECT:
|
|
gdisplay_install_tool_cursor (gdisp, GIMP_MOUSE1U_CURSOR);
|
|
break;
|
|
case SELECTION_REPLACE:
|
|
gdisplay_install_tool_cursor (gdisp, GDK_TCROSS);
|
|
break;
|
|
case SELECTION_MOVE_MASK:
|
|
gdisplay_install_tool_cursor (gdisp, GDK_DIAMOND_CROSS);
|
|
break;
|
|
case SELECTION_MOVE:
|
|
gdisplay_install_tool_cursor (gdisp, GDK_FLEUR);
|
|
}
|
|
}
|
|
|
|
void
|
|
rect_select_control (Tool *tool,
|
|
ToolAction action,
|
|
gpointer gdisp_ptr)
|
|
{
|
|
RectSelect * rect_sel;
|
|
|
|
rect_sel = (RectSelect *) tool->private;
|
|
|
|
switch (action)
|
|
{
|
|
case PAUSE :
|
|
draw_core_pause (rect_sel->core, tool);
|
|
break;
|
|
|
|
case RESUME :
|
|
draw_core_resume (rect_sel->core, tool);
|
|
break;
|
|
|
|
case HALT :
|
|
draw_core_stop (rect_sel->core, tool);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
rect_select_options_reset ()
|
|
{
|
|
selection_options_reset (rect_options);
|
|
}
|
|
|
|
Tool *
|
|
tools_new_rect_select ()
|
|
{
|
|
Tool * tool;
|
|
RectSelect * private;
|
|
|
|
/* The tool options */
|
|
if (! rect_options)
|
|
{
|
|
rect_options =
|
|
selection_options_new (RECT_SELECT, rect_select_options_reset);
|
|
tools_register (RECT_SELECT, (ToolOptions *) rect_options);
|
|
}
|
|
|
|
tool = tools_new_tool (RECT_SELECT);
|
|
private = g_new (RectSelect, 1);
|
|
|
|
private->core = draw_core_new (rect_select_draw);
|
|
private->x = private->y = 0;
|
|
private->w = private->h = 0;
|
|
private->op = SELECTION_REPLACE;
|
|
|
|
tool->private = (void *) private;
|
|
|
|
tool->button_press_func = rect_select_button_press;
|
|
tool->button_release_func = rect_select_button_release;
|
|
tool->motion_func = rect_select_motion;
|
|
tool->cursor_update_func = rect_select_cursor_update;
|
|
tool->control_func = rect_select_control;
|
|
|
|
return tool;
|
|
}
|
|
|
|
void
|
|
tools_free_rect_select (Tool *tool)
|
|
{
|
|
RectSelect * rect_sel;
|
|
|
|
rect_sel = (RectSelect *) tool->private;
|
|
|
|
draw_core_free (rect_sel->core);
|
|
g_free (rect_sel);
|
|
}
|