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app: add a pen canvas item class and use it in the foreground select tool 

Remove gimp_display_shell_draw_pen().
This commit is contained in:
Michael Natterer 2010-10-03 02:26:40 +02:00
parent ff6d0f36b3
commit f3450431a3
10 changed files with 346 additions and 85 deletions
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2
app/display/Makefile.am
View File

@ -41,6 +41,8 @@ libappdisplay_a_sources = \
gimpcanvaslayerboundary.h \
gimpcanvasline.c \
gimpcanvasline.h \
gimpcanvaspen.c \
gimpcanvaspen.h \
gimpcanvaspolygon.c \
gimpcanvaspolygon.h \
gimpcanvasproxygroup.c \

237
app/display/gimpcanvaspen.c Normal file
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@ -0,0 +1,237 @@
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcanvaspen.c
* Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "display-types.h"
#include "core/gimpcontext.h"
#include "core/gimpparamspecs.h"
#include "gimpcanvaspen.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-style.h"
#include "gimpdisplayshell-transform.h"
enum
{
PROP_0,
PROP_COLOR,
PROP_WIDTH
};
typedef struct _GimpCanvasPenPrivate GimpCanvasPenPrivate;
struct _GimpCanvasPenPrivate
{
GimpRGB color;
gint width;
};
#define GET_PRIVATE(pen) \
G_TYPE_INSTANCE_GET_PRIVATE (pen, \
GIMP_TYPE_CANVAS_PEN, \
GimpCanvasPenPrivate)
/* local function prototypes */
static void gimp_canvas_pen_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_canvas_pen_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static GdkRegion * gimp_canvas_pen_get_extents (GimpCanvasItem *item,
GimpDisplayShell *shell);
static void gimp_canvas_pen_stroke (GimpCanvasItem *item,
GimpDisplayShell *shell,
cairo_t *cr);
G_DEFINE_TYPE (GimpCanvasPen, gimp_canvas_pen,
GIMP_TYPE_CANVAS_POLYGON)
#define parent_class gimp_canvas_pen_parent_class
static void
gimp_canvas_pen_class_init (GimpCanvasPenClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass);
object_class->set_property = gimp_canvas_pen_set_property;
object_class->get_property = gimp_canvas_pen_get_property;
item_class->get_extents = gimp_canvas_pen_get_extents;
item_class->stroke = gimp_canvas_pen_stroke;
g_object_class_install_property (object_class, PROP_COLOR,
gimp_param_spec_rgb ("color", NULL, NULL,
FALSE, NULL,
GIMP_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_WIDTH,
g_param_spec_int ("width", NULL, NULL,
1, G_MAXINT, 1,
GIMP_PARAM_READWRITE));
g_type_class_add_private (klass, sizeof (GimpCanvasPenPrivate));
}
static void
gimp_canvas_pen_init (GimpCanvasPen *pen)
{
}
static void
gimp_canvas_pen_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpCanvasPenPrivate *private = GET_PRIVATE (object);
switch (property_id)
{
case PROP_COLOR:
gimp_value_get_rgb (value, &private->color);
break;
case PROP_WIDTH:
private->width = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_canvas_pen_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpCanvasPenPrivate *private = GET_PRIVATE (object);
switch (property_id)
{
case PROP_COLOR:
gimp_value_set_rgb (value, &private->color);
break;
case PROP_WIDTH:
g_value_set_int (value, private->width);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static GdkRegion *
gimp_canvas_pen_get_extents (GimpCanvasItem *item,
GimpDisplayShell *shell)
{
GimpCanvasPenPrivate *private = GET_PRIVATE (item);
GdkRegion *region;
region = GIMP_CANVAS_ITEM_CLASS (parent_class)->get_extents (item, shell);
if (region)
{
GdkRectangle rectangle;
gdk_region_get_clipbox (region, &rectangle);
rectangle.x -= ceil (private->width / 2.0);
rectangle.y -= ceil (private->width / 2.0);
rectangle.width += private->width + 1;
rectangle.height += private->width + 1;
}
return region;
}
static void
gimp_canvas_pen_stroke (GimpCanvasItem *item,
GimpDisplayShell *shell,
cairo_t *cr)
{
GimpCanvasPenPrivate *private = GET_PRIVATE (item);
gimp_display_shell_set_pen_style (shell, cr, &private->color, private->width);
cairo_stroke (cr);
}
GimpCanvasItem *
gimp_canvas_pen_new (GimpDisplayShell *shell,
const GimpVector2 *points,
gint n_points,
GimpContext *context,
GimpActiveColor color,
gint width)
{
GimpCanvasItem *item;
GimpArray *array;
GimpRGB rgb;
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
g_return_val_if_fail (points != NULL && n_points > 1, NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
array = gimp_array_new ((const guint8 *) points,
n_points * sizeof (GimpVector2), TRUE);
switch (color)
{
case GIMP_ACTIVE_COLOR_FOREGROUND:
gimp_context_get_foreground (context, &rgb);
break;
case GIMP_ACTIVE_COLOR_BACKGROUND:
gimp_context_get_background (context, &rgb);
break;
}
item = g_object_new (GIMP_TYPE_CANVAS_PEN,
"shell", shell,
"points", array,
"color", &rgb,
"width", width,
NULL);
gimp_array_free (array);
return item;
}

60
app/display/gimpcanvaspen.h Normal file
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@ -0,0 +1,60 @@
/* GIMP - The GNU Image Manipulation Program Copyright (C) 1995
* Spencer Kimball and Peter Mattis
*
* gimpcanvaspen.h
* Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#ifndef __GIMP_CANVAS_PEN_H__
#define __GIMP_CANVAS_PEN_H__
#include "gimpcanvaspolygon.h"
#define GIMP_TYPE_CANVAS_PEN (gimp_canvas_pen_get_type ())
#define GIMP_CANVAS_PEN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_CANVAS_PEN, GimpCanvasPen))
#define GIMP_CANVAS_PEN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_CANVAS_PEN, GimpCanvasPenClass))
#define GIMP_IS_CANVAS_PEN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_CANVAS_PEN))
#define GIMP_IS_CANVAS_PEN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_CANVAS_PEN))
#define GIMP_CANVAS_PEN_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_CANVAS_PEN, GimpCanvasPenClass))
typedef struct _GimpCanvasPen GimpCanvasPen;
typedef struct _GimpCanvasPenClass GimpCanvasPenClass;
struct _GimpCanvasPen
{
GimpCanvasPolygon parent_instance;
};
struct _GimpCanvasPenClass
{
GimpCanvasPolygonClass parent_class;
};
GType gimp_canvas_pen_get_type (void) G_GNUC_CONST;
GimpCanvasItem * gimp_canvas_pen_new (GimpDisplayShell *shell,
const GimpVector2 *points,
gint n_points,
GimpContext *context,
GimpActiveColor color,
gint width);
#endif /* __GIMP_CANVAS_PEN_H__ */

45
app/display/gimpdisplayshell-draw.c
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@ -29,7 +29,6 @@
#include "base/tile-manager.h"
#include "core/gimpcontext.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "core/gimpprojection.h"
@ -118,50 +117,6 @@ gimp_display_shell_draw_get_scaled_image_size_for_scale (GimpDisplayShell *shell
if (h) *h = PROJ_ROUND (level_height * (scale_y * (1 << level)));
}
void
gimp_display_shell_draw_pen (GimpDisplayShell *shell,
cairo_t *cr,
const GimpVector2 *points,
gint n_points,
GimpContext *context,
GimpActiveColor color,
gint width)
{
gint i;
gint x, y;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (cr != NULL);
g_return_if_fail (GIMP_IS_CONTEXT (context));
g_return_if_fail (n_points == 0 || points != NULL);
if (n_points == 0)
return;
gimp_display_shell_set_pen_style (shell, cr, context, color, width);
cairo_translate (cr, 0.5, 0.5);
gimp_display_shell_transform_xy (shell,
points[0].x, points[0].y,
&x, &y);
cairo_move_to (cr, x, y);
for (i = 1; i < n_points; i++)
{
gimp_display_shell_transform_xy (shell,
points[i].x, points[i].y,
&x, &y);
cairo_line_to (cr, x, y);
}
if (i == 1)
cairo_line_to (cr, x, y);
cairo_stroke (cr);
}
void
gimp_display_shell_draw_selection_out (GimpDisplayShell *shell,
cairo_t *cr,

9
app/display/gimpdisplayshell-draw.h
View File

@ -28,13 +28,6 @@ void gimp_display_shell_draw_get_scaled_image_size_for_scale
gint *w,
gint *h);
void gimp_display_shell_draw_pen (GimpDisplayShell *shell,
cairo_t *cr,
const GimpVector2 *points,
gint n_points,
GimpContext *context,
GimpActiveColor color,
gint width);
void gimp_display_shell_draw_selection_out (GimpDisplayShell *shell,
cairo_t *cr,
GdkSegment *segs,
@ -43,8 +36,10 @@ void gimp_display_shell_draw_selection_in (GimpDisplayShell *shell,
cairo_t *cr,
cairo_pattern_t *mask,
gint index);
void gimp_display_shell_draw_vectors (GimpDisplayShell *shell,
cairo_t *cr);
void gimp_display_shell_draw_image (GimpDisplayShell *shell,
cairo_t *cr,
gint x,

21
app/display/gimpdisplayshell-style.c
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@ -28,7 +28,6 @@
#include "display-types.h"
#include "core/gimpcontext.h"
#include "core/gimpgrid.h"
#include "core/gimplayer.h"
#include "core/gimplayermask.h"
@ -174,33 +173,19 @@ gimp_display_shell_set_grid_style (GimpDisplayShell *shell,
void
gimp_display_shell_set_pen_style (GimpDisplayShell *shell,
cairo_t *cr,
GimpContext *context,
GimpActiveColor active,
const GimpRGB *color,
gint width)
{
GimpRGB rgb;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (cr != NULL);
g_return_if_fail (GIMP_IS_CONTEXT (context));
g_return_if_fail (color != NULL);
cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
cairo_set_line_width (cr, width);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
switch (active)
{
case GIMP_ACTIVE_COLOR_FOREGROUND:
gimp_context_get_foreground (context, &rgb);
break;
case GIMP_ACTIVE_COLOR_BACKGROUND:
gimp_context_get_background (context, &rgb);
break;
}
cairo_set_source_rgb (cr, rgb.r, rgb.g, rgb.b);
gimp_cairo_set_source_rgb (cr, color);
}
void

3
app/display/gimpdisplayshell-style.h
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@ -33,8 +33,7 @@ void gimp_display_shell_set_grid_style (GimpDisplayShell *shell,
GimpGrid *grid);
void gimp_display_shell_set_pen_style (GimpDisplayShell *shell,
cairo_t *cr,
GimpContext *context,
GimpActiveColor active,
const GimpRGB *color,
gint width);
void gimp_display_shell_set_layer_style (GimpDisplayShell *shell,
cairo_t *cr,

25
app/tools/gimpdrawtool.c
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@ -40,6 +40,7 @@
#include "display/gimpcanvasguide.h"
#include "display/gimpcanvashandle.h"
#include "display/gimpcanvasline.h"
#include "display/gimpcanvaspen.h"
#include "display/gimpcanvaspolygon.h"
#include "display/gimpcanvasrectangle.h"
#include "display/gimpcanvassamplepoint.h"
@ -652,6 +653,30 @@ gimp_draw_tool_add_strokes (GimpDrawTool *draw_tool,
return item;
}
GimpCanvasItem *
gimp_draw_tool_add_pen (GimpDrawTool *draw_tool,
const GimpVector2 *points,
gint n_points,
GimpContext *context,
GimpActiveColor color,
gint width)
{
GimpCanvasItem *item;
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), NULL);
if (points == NULL || n_points < 2)
return NULL;
item = gimp_canvas_pen_new (gimp_display_get_shell (draw_tool->display),
points, n_points, context, color, width);
gimp_draw_tool_add_item (draw_tool, item);
g_object_unref (item);
return item;
}
/**
* gimp_draw_tool_add_boundary:
* @draw_tool: a #GimpDrawTool

8
app/tools/gimpdrawtool.h
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@ -131,6 +131,7 @@ GimpCanvasItem * gimp_draw_tool_add_corner (GimpDrawTool *draw_too
gint width,
gint height,
GtkAnchorType anchor);
GimpCanvasItem * gimp_draw_tool_add_lines (GimpDrawTool *draw_tool,
const GimpVector2 *points,
gint n_points,
@ -141,6 +142,13 @@ GimpCanvasItem * gimp_draw_tool_add_strokes (GimpDrawTool *draw_too
gint n_points,
gboolean filled);
GimpCanvasItem * gimp_draw_tool_add_pen (GimpDrawTool *draw_tool,
const GimpVector2 *points,
gint n_points,
GimpContext *context,
GimpActiveColor color,
gint width);
GimpCanvasItem * gimp_draw_tool_add_boundary (GimpDrawTool *draw_tool,
const BoundSeg *bound_segs,
gint n_bound_segs,

9
app/tools/gimpforegroundselecttool.c
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@ -44,7 +44,6 @@
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-draw.h"
#include "gimpforegroundselecttool.h"
#include "gimpforegroundselectoptions.h"
@ -571,18 +570,14 @@ gimp_foreground_select_tool_draw (GimpDrawTool *draw_tool)
if (fg_select->stroke)
{
GimpDisplayShell *shell = gimp_display_get_shell (draw_tool->display);
cairo_t *cr = gdk_cairo_create (gtk_widget_get_window (shell->canvas));
gimp_display_shell_draw_pen (gimp_display_get_shell (draw_tool->display),
cr,
(const GimpVector2 *)fg_select->stroke->data,
gimp_draw_tool_add_pen (draw_tool,
(const GimpVector2 *) fg_select->stroke->data,
fg_select->stroke->len,
GIMP_CONTEXT (options),
(options->background ?
GIMP_ACTIVE_COLOR_BACKGROUND :
GIMP_ACTIVE_COLOR_FOREGROUND),
options->stroke_width);
cairo_destroy (cr);
}
if (fg_select->mask)