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gimp/app/tools/gimpbrushtool.c

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/* 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 "config.h"
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "tools-types.h"
#include "config/gimpdisplayconfig.h"
#include "base/boundary.h"
#include "base/pixel-region.h"
#include "base/temp-buf.h"
#include "core/gimp.h"
#include "core/gimpbrush.h"
#include "core/gimpcontainer.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "core/gimppaintinfo.h"
#include "core/gimpprojection.h"
#include "core/gimptoolinfo.h"
#include "core/gimpunit.h"
#include "paint/gimpbrushcore.h"
#include "paint/gimppaintcore.h"
#include "paint/gimppaintoptions.h"
#include "widgets/gimpdevices.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpstatusbar.h"
#include "gimpcoloroptions.h"
#include "gimpcolorpickertool.h"
#include "gimppainttool.h"
#include "gimptoolcontrol.h"
#include "tools-utils.h"
#include "gimp-intl.h"
#define TARGET_SIZE 15
#define STATUSBAR_SIZE 128
static void gimp_paint_tool_class_init (GimpPaintToolClass *klass);
static void gimp_paint_tool_init (GimpPaintTool *paint_tool);
static GObject * gimp_paint_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_paint_tool_finalize (GObject *object);
static void gimp_paint_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp);
static void gimp_paint_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_paint_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_paint_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_paint_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_paint_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_paint_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_paint_tool_draw (GimpDrawTool *draw_tool);
static void gimp_paint_tool_color_picked (GimpColorTool *color_tool,
GimpColorPickState pick_state,
GimpImageType sample_type,
GimpRGB *color,
gint color_index);
static void gimp_paint_tool_set_brush (GimpBrushCore *brush_core,
GimpBrush *brush,
GimpPaintTool *paint_tool);
static void gimp_paint_tool_set_brush_after(GimpBrushCore *brush_core,
GimpBrush *brush,
GimpPaintTool *paint_tool);
static void gimp_paint_tool_notify_brush (GimpDisplayConfig *config,
GParamSpec *pspec,
GimpPaintTool *paint_tool);
static GimpColorToolClass *parent_class = NULL;
GType
gimp_paint_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpPaintToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_paint_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpPaintTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_paint_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_COLOR_TOOL,
"GimpPaintTool",
&tool_info, 0);
}
return tool_type;
}
static void
gimp_paint_tool_class_init (GimpPaintToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
GimpColorToolClass *color_tool_class = GIMP_COLOR_TOOL_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->constructor = gimp_paint_tool_constructor;
object_class->finalize = gimp_paint_tool_finalize;
tool_class->control = gimp_paint_tool_control;
tool_class->button_press = gimp_paint_tool_button_press;
tool_class->button_release = gimp_paint_tool_button_release;
tool_class->motion = gimp_paint_tool_motion;
tool_class->modifier_key = gimp_paint_tool_modifier_key;
tool_class->oper_update = gimp_paint_tool_oper_update;
tool_class->cursor_update = gimp_paint_tool_cursor_update;
draw_tool_class->draw = gimp_paint_tool_draw;
color_tool_class->picked = gimp_paint_tool_color_picked;
}
static void
gimp_paint_tool_init (GimpPaintTool *paint_tool)
{
GimpTool *tool = GIMP_TOOL (paint_tool);
gimp_tool_control_set_motion_mode (tool->control,
GIMP_MOTION_MODE_EXACT);
gimp_tool_control_set_action_value_1 (tool->control,
"context/context-opacity-set");
gimp_tool_control_set_action_value_2 (tool->control,
"context/context-brush-radius-set");
gimp_tool_control_set_action_value_3 (tool->control,
"context/context-brush-aspect-set");
gimp_tool_control_set_action_value_4 (tool->control,
"context/context-brush-angle-set");
gimp_tool_control_set_action_object_1 (tool->control,
"context/context-brush-select-set");
paint_tool->pick_colors = FALSE;
paint_tool->draw_line = FALSE;
paint_tool->show_cursor = TRUE;
paint_tool->draw_brush = TRUE;
paint_tool->brush_x = 0.0;
paint_tool->brush_y = 0.0;
paint_tool->core = NULL;
}
static GObject *
gimp_paint_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpTool *tool;
GimpPaintTool *paint_tool;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
tool = GIMP_TOOL (object);
paint_tool = GIMP_PAINT_TOOL (object);
g_assert (GIMP_IS_TOOL_INFO (tool->tool_info));
paint_tool->show_cursor =
GIMP_DISPLAY_CONFIG (tool->tool_info->gimp->config)->show_paint_tool_cursor;
paint_tool->draw_brush =
GIMP_DISPLAY_CONFIG (tool->tool_info->gimp->config)->show_brush_outline;
g_signal_connect_object (tool->tool_info->gimp->config,
"notify::show-paint-tool-cursor",
G_CALLBACK (gimp_paint_tool_notify_brush),
paint_tool, 0);
g_signal_connect_object (tool->tool_info->gimp->config,
"notify::show-brush-outline",
G_CALLBACK (gimp_paint_tool_notify_brush),
paint_tool, 0);
paint_tool->core = g_object_new (tool->tool_info->paint_info->paint_type,
NULL);
if (GIMP_IS_BRUSH_CORE (paint_tool->core))
{
g_signal_connect (paint_tool->core, "set-brush",
G_CALLBACK (gimp_paint_tool_set_brush),
paint_tool);
g_signal_connect_after (paint_tool->core, "set-brush",
G_CALLBACK (gimp_paint_tool_set_brush_after),
paint_tool);
}
return object;
}
static void
gimp_paint_tool_finalize (GObject *object)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (object);
if (paint_tool->core)
{
g_object_unref (paint_tool->core);
paint_tool->core = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/**
* gimp_paint_tool_enable_color_picker:
* @tool: a #GimpPaintTool
* @mode: the #GimpColorPickMode to set
*
* This is a convenience function used from the init method of paint
* tools that want the color picking functionality. The @mode that is
* set here is used to decide what cursor modifier to draw and if the
* picked color goes to the foreground or background color.
**/
void
gimp_paint_tool_enable_color_picker (GimpPaintTool *tool,
GimpColorPickMode mode)
{
g_return_if_fail (GIMP_IS_PAINT_TOOL (tool));
tool->pick_colors = TRUE;
GIMP_COLOR_TOOL (tool)->pick_mode = mode;
}
static void
gimp_paint_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpDrawable *drawable;
drawable = gimp_image_active_drawable (gdisp->gimage);
switch (action)
{
case HALT:
gimp_paint_core_paint (paint_tool->core,
drawable,
GIMP_PAINT_OPTIONS (tool->tool_info->tool_options),
GIMP_PAINT_STATE_FINISH, 0);
gimp_paint_core_cleanup (paint_tool->core);
#if 0
/* evil hack i'm thinking about... --mitch */
{
/* HALT means the current display is going to go away (TM),
* so try to find another display of the same image to make
* straight line drawing continue to work...
*/
GSList *list;
for (list = display_list; list; list = g_slist_next (list))
{
GimpDisplay *tmp_disp = list->data;
if (tmp_disp != gdisp && tmp_disp->gimage == gdisp->gimage)
{
tool->gdisp = tmp_disp;
break;
}
}
}
#endif
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
/**
* gimp_paint_tool_round_line:
* @core: the #GimpPaintCore
* @center_pixels: push coordinates to pixel centers?
* @state: the modifier state
*
* Adjusts core->last_coords and core_cur_coords in preparation to
* drawing a straight line. If @center_pixels is TRUE the endpoints
* get pushed to the center of the pixels. This avoids artefacts
* for e.g. the hard mode. The rounding of the slope to 15 degree
* steps if ctrl is pressed happens, as does rounding the start and
* end coordinates (which may be fractional in high zoom modes) to
* the center of pixels.
**/
static void
gimp_paint_tool_round_line (GimpPaintCore *core,
gboolean center_pixels,
GdkModifierType state)
{
if (center_pixels)
{
core->last_coords.x = floor (core->last_coords.x) + 0.5;
core->last_coords.y = floor (core->last_coords.y) + 0.5;
core->cur_coords.x = floor (core->cur_coords.x ) + 0.5;
core->cur_coords.y = floor (core->cur_coords.y ) + 0.5;
}
/* Restrict to multiples of 15 degrees if ctrl is pressed */
if (state & GDK_CONTROL_MASK)
gimp_tool_motion_constrain (core->last_coords.x, core->last_coords.y,
&core->cur_coords.x, &core->cur_coords.y);
}
static void
gimp_paint_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpPaintOptions *paint_options;
GimpPaintCore *core;
GimpDrawable *drawable;
GdkDisplay *gdk_display;
GimpCoords curr_coords;
gint off_x, off_y;
paint_options = GIMP_PAINT_OPTIONS (tool->tool_info->tool_options);
core = paint_tool->core;
drawable = gimp_image_active_drawable (gdisp->gimage);
curr_coords = *coords;
gimp_item_offsets (GIMP_ITEM (drawable), &off_x, &off_y);
curr_coords.x -= off_x;
curr_coords.y -= off_y;
if (gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_stop (draw_tool);
if (tool->gdisp &&
tool->gdisp != gdisp &&
tool->gdisp->gimage == gdisp->gimage)
{
/* if this is a different display, but the same image, HACK around
* in tool internals AFTER stopping the current draw_tool, so
* straight line drawing works across different views of the
* same image.
*/
tool->gdisp = gdisp;
}
gdk_display = gtk_widget_get_display (gdisp->shell);
core->use_pressure = (gimp_devices_get_current (gdisp->gimage->gimp) !=
gdk_display_get_core_pointer (gdk_display));
if (! gimp_paint_core_start (core, drawable, paint_options, &curr_coords))
return;
if ((gdisp != tool->gdisp) || ! paint_tool->draw_line)
{
/* if this is a new image, reinit the core vals */
core->start_coords = core->cur_coords;
core->last_coords = core->cur_coords;
core->distance = 0.0;
core->pixel_dist = 0.0;
}
else if (paint_tool->draw_line)
{
/* If shift is down and this is not the first paint
* stroke, then draw a line from the last coords to the pointer
*/
gboolean hard;
core->start_coords = core->last_coords;
hard = (gimp_paint_options_get_brush_mode (paint_options) ==
GIMP_BRUSH_HARD);
gimp_paint_tool_round_line (core, hard, state);
}
/* let the parent class activate the tool */
GIMP_TOOL_CLASS (parent_class)->button_press (tool,
coords, time, state, gdisp);
if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
return;
/* pause the current selection */
gimp_image_selection_control (gdisp->gimage, GIMP_SELECTION_PAUSE);
/* Let the specific painting function initialize itself */
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_INIT, time);
/* Paint to the image */
if (paint_tool->draw_line)
{
gimp_paint_core_interpolate (core, drawable, paint_options, time);
}
else
{
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_MOTION, time);
}
gimp_projection_flush_now (gdisp->gimage->projection);
gimp_display_flush_now (gdisp);
gimp_draw_tool_start (draw_tool, gdisp);
}
static void
gimp_paint_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpPaintOptions *paint_options;
GimpPaintCore *core;
GimpDrawable *drawable;
paint_options = GIMP_PAINT_OPTIONS (tool->tool_info->tool_options);
core = paint_tool->core;
drawable = gimp_image_active_drawable (gdisp->gimage);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* Let the specific painting function finish up */
gimp_paint_core_paint (core, drawable, paint_options,
GIMP_PAINT_STATE_FINISH, time);
/* resume the current selection */
gimp_image_selection_control (gdisp->gimage, GIMP_SELECTION_RESUME);
/* chain up to halt the tool */
GIMP_TOOL_CLASS (parent_class)->button_release (tool,
coords, time, state, gdisp);
if (state & GDK_BUTTON3_MASK)
gimp_paint_core_cancel (core, drawable);
else
gimp_paint_core_finish (core, drawable);
gimp_image_flush (gdisp->gimage);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_paint_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpPaintOptions *paint_options;
GimpPaintCore *core;
GimpDrawable *drawable;
gint off_x, off_y;
paint_options = GIMP_PAINT_OPTIONS (tool->tool_info->tool_options);
core = paint_tool->core;
drawable = gimp_image_active_drawable (gdisp->gimage);
core->cur_coords = *coords;
gimp_item_offsets (GIMP_ITEM (drawable), &off_x, &off_y);
core->cur_coords.x -= off_x;
core->cur_coords.y -= off_y;
GIMP_TOOL_CLASS (parent_class)->motion (tool, coords, time, state, gdisp);
if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
return;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
gimp_paint_core_interpolate (core, drawable, paint_options, time);
gimp_projection_flush_now (gdisp->gimage->projection);
gimp_display_flush_now (gdisp);
paint_tool->brush_x = coords->x;
paint_tool->brush_y = coords->y;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_paint_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
if (key != GDK_CONTROL_MASK)
return;
if (paint_tool->pick_colors && ! paint_tool->draw_line)
{
if (press)
{
GimpContainer *tool_info_list;
GimpToolInfo *info;
tool_info_list = gdisp->gimage->gimp->tool_info_list;
info = (GimpToolInfo *)
gimp_container_get_child_by_name (tool_info_list,
"gimp-color-picker-tool");
if (GIMP_IS_TOOL_INFO (info))
{
if (gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_stop (draw_tool);
gimp_color_tool_enable (GIMP_COLOR_TOOL (tool),
GIMP_COLOR_OPTIONS (info->tool_options));
}
}
else
{
if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)))
gimp_color_tool_disable (GIMP_COLOR_TOOL (tool));
}
}
}
static void
gimp_paint_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
GimpPaintOptions *paint_options;
GimpPaintCore *core;
GimpDisplayShell *shell;
GimpDrawable *drawable;
paint_options = GIMP_PAINT_OPTIONS (tool->tool_info->tool_options);
if (gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (draw_tool)))
{
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, gdisp);
return;
}
core = paint_tool->core;
shell = GIMP_DISPLAY_SHELL (gdisp->shell);
if (gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_stop (draw_tool);
gimp_tool_pop_status (tool, gdisp);
if (tool->gdisp &&
tool->gdisp != gdisp &&
tool->gdisp->gimage == gdisp->gimage)
{
/* if this is a different display, but the same image, HACK around
* in tool internals AFTER stopping the current draw_tool, so
* straight line drawing works across different views of the
* same image.
*/
tool->gdisp = gdisp;
}
drawable = gimp_image_active_drawable (gdisp->gimage);
if (drawable && shell->proximity)
{
if (gdisp == tool->gdisp && (state & GDK_SHIFT_MASK))
{
/* If shift is down and this is not the first paint stroke,
* draw a line.
*/
gdouble dx, dy, dist;
gchar status_str[STATUSBAR_SIZE];
gint off_x, off_y;
gboolean hard;
core->cur_coords = *coords;
gimp_item_offsets (GIMP_ITEM (drawable), &off_x, &off_y);
core->cur_coords.x -= off_x;
core->cur_coords.y -= off_y;
hard = (gimp_paint_options_get_brush_mode (paint_options) ==
GIMP_BRUSH_HARD);
gimp_paint_tool_round_line (core, hard, state);
dx = core->cur_coords.x - core->last_coords.x;
dy = core->cur_coords.y - core->last_coords.y;
/* show distance in statusbar */
if (shell->unit == GIMP_UNIT_PIXEL)
{
dist = sqrt (SQR (dx) + SQR (dy));
g_snprintf (status_str, sizeof (status_str), "%.1f %s",
dist, _("pixels"));
}
else
{
GimpImage *image = gdisp->gimage;
gchar format_str[64];
g_snprintf (format_str, sizeof (format_str), "%%.%df %s",
_gimp_unit_get_digits (image->gimp, shell->unit),
_gimp_unit_get_symbol (image->gimp, shell->unit));
dist = (_gimp_unit_get_factor (image->gimp, shell->unit) *
sqrt (SQR (dx / image->xresolution) +
SQR (dy / image->yresolution)));
g_snprintf (status_str, sizeof (status_str), format_str, dist);
}
gimp_tool_push_status (tool, gdisp, status_str);
paint_tool->draw_line = TRUE;
}
else
{
if (gdisp == tool->gdisp)
gimp_tool_push_status (tool, gdisp,
_("Press Shift to draw a straight line."));
paint_tool->draw_line = FALSE;
}
paint_tool->brush_x = coords->x;
paint_tool->brush_y = coords->y;
if (GIMP_IS_BRUSH_CORE (core))
{
GimpBrushCore *brush_core = GIMP_BRUSH_CORE (core);
GimpBrush *brush;
brush = gimp_context_get_brush (GIMP_CONTEXT (paint_options));
if (brush_core->main_brush != brush)
gimp_brush_core_set_brush (brush_core, brush);
}
gimp_draw_tool_start (draw_tool, gdisp);
}
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, gdisp);
}
static void
gimp_paint_tool_draw (GimpDrawTool *draw_tool)
{
if (! gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (draw_tool)))
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (draw_tool);
GimpPaintCore *core = paint_tool->core;
if (paint_tool->draw_line &&
! gimp_tool_control_is_active (GIMP_TOOL (draw_tool)->control))
{
/* Draw start target */
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_CROSS,
core->last_coords.x,
core->last_coords.y,
TARGET_SIZE,
TARGET_SIZE,
GTK_ANCHOR_CENTER,
TRUE);
/* Draw end target */
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_CROSS,
core->cur_coords.x,
core->cur_coords.y,
TARGET_SIZE,
TARGET_SIZE,
GTK_ANCHOR_CENTER,
TRUE);
/* Draw the line between the start and end coords */
gimp_draw_tool_draw_line (draw_tool,
core->last_coords.x,
core->last_coords.y,
core->cur_coords.x,
core->cur_coords.y,
TRUE);
}
if (paint_tool->draw_brush && GIMP_IS_BRUSH_CORE (core))
{
GimpBrushCore *brush_core = GIMP_BRUSH_CORE (core);
if (! brush_core->brush_bound_segs && brush_core->main_brush)
{
TempBuf *mask = gimp_brush_get_mask (brush_core->main_brush);
PixelRegion PR = { 0, };
BoundSeg *boundary;
gint num_groups;
pixel_region_init_temp_buf (&PR, mask,
0, 0, mask->width, mask->height);
boundary = boundary_find (&PR, BOUNDARY_WITHIN_BOUNDS,
0, 0, PR.w, PR.h,
0,
&brush_core->n_brush_bound_segs);
brush_core->brush_bound_segs =
boundary_sort (boundary, brush_core->n_brush_bound_segs,
&num_groups);
brush_core->n_brush_bound_segs += num_groups;
g_free (boundary);
brush_core->brush_bound_width = mask->width;
brush_core->brush_bound_height = mask->height;
}
if (brush_core->brush_bound_segs)
{
GimpTool *tool = GIMP_TOOL (draw_tool);
GimpPaintOptions *paint_options;
gdouble brush_x, brush_y;
paint_options = GIMP_PAINT_OPTIONS (tool->tool_info->tool_options);
brush_x = (paint_tool->brush_x -
((gdouble) brush_core->brush_bound_width / 2.0));
brush_y = (paint_tool->brush_y -
((gdouble) brush_core->brush_bound_height / 2.0));
if (gimp_paint_options_get_brush_mode (paint_options) == GIMP_BRUSH_HARD)
{
#define EPSILON 0.000001
/* Add EPSILON before rounding since e.g.
* (5.0 - 0.5) may end up at (4.499999999....)
* due to floating point fnords
*/
brush_x = RINT (brush_x + EPSILON);
brush_y = RINT (brush_y + EPSILON);
#undef EPSILON
}
gimp_draw_tool_draw_boundary (draw_tool,
brush_core->brush_bound_segs,
brush_core->n_brush_bound_segs,
brush_x,
brush_y,
FALSE);
}
}
}
GIMP_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
}
static void
gimp_paint_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpPaintTool *paint_tool = GIMP_PAINT_TOOL (tool);
if (! gimp_color_tool_is_enabled (GIMP_COLOR_TOOL (tool)) &&
! paint_tool->show_cursor)
{
gimp_tool_set_cursor (tool, gdisp,
GIMP_CURSOR_NONE,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_NONE);
return;
}
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
static void
gimp_paint_tool_color_picked (GimpColorTool *color_tool,
GimpColorPickState pick_state,
GimpImageType sample_type,
GimpRGB *color,
gint color_index)
{
GimpTool *tool = GIMP_TOOL (color_tool);
if (tool->gdisp)
{
GimpContext *context = gimp_get_user_context (tool->gdisp->gimage->gimp);
switch (color_tool->pick_mode)
{
case GIMP_COLOR_PICK_MODE_FOREGROUND:
gimp_context_set_foreground (context, color);
break;
case GIMP_COLOR_PICK_MODE_BACKGROUND:
gimp_context_set_background (context, color);
break;
default:
break;
}
}
}
static void
gimp_paint_tool_set_brush (GimpBrushCore *brush_core,
GimpBrush *brush,
GimpPaintTool *paint_tool)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (paint_tool));
}
static void
gimp_paint_tool_set_brush_after (GimpBrushCore *brush_core,
GimpBrush *brush,
GimpPaintTool *paint_tool)
{
gimp_draw_tool_resume (GIMP_DRAW_TOOL (paint_tool));
}
static void
gimp_paint_tool_notify_brush (GimpDisplayConfig *config,
GParamSpec *pspec,
GimpPaintTool *paint_tool)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (paint_tool));
paint_tool->show_cursor = config->show_paint_tool_cursor;
paint_tool->draw_brush = config->show_brush_outline;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (paint_tool));
}
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