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Bill Skaggs <weskaggs@primate.ucdavis.edu> 

* app/vectors/gimpvectors-warp.c
	* app/vectors/gimpvectors-warp.h: new files implmenting
	"path along a path" functionality.

	* app/vectors/Makefile.am: new stuff added

	* gimp/app/vectors/gimpvectors.[ch]: actually implement
	gimp_vectors_real_stroke_get_length().

	* app/tools/gimptexttool.c
	* app/tools/gimptextoptions.c: first pass at "text
	along a path", using new functions.  See bug #169616.
This commit is contained in:
William Skaggs 2005-03-09 16:58:54 +00:00
parent 3285ee6ef5
commit 07fa3011f3
8 changed files with 283 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
ChangeLog
View File

@ -1,3 +1,18 @@
2005-03-09 Bill Skaggs <weskaggs@primate.ucdavis.edu>
* app/vectors/gimpvectors-warp.c
* app/vectors/gimpvectors-warp.h: new files implmenting
"path along a path" functionality.
* app/vectors/Makefile.am: new stuff added
* gimp/app/vectors/gimpvectors.[ch]: actually implement
gimp_vectors_real_stroke_get_length().
* app/tools/gimptexttool.c
* app/tools/gimptextoptions.c: first pass at "text
along a path", using new functions. See bug #169616.
2005-03-09 Sven Neumann <sven@gimp.org>
* app/core/gimppalette.[ch]: renamed again, to

8
app/tools/gimptextoptions.c
View File

@ -501,6 +501,14 @@ gimp_text_options_gui (GimpToolOptions *tool_options)
g_object_set_data (G_OBJECT (tool_options),
"gimp-text-to-vectors", button);
button = gtk_button_new_with_label (_("Text along path"));
gtk_box_pack_end (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_widget_set_sensitive (button, FALSE);
gtk_widget_show (button);
g_object_set_data (G_OBJECT (tool_options),
"gimp-text-to-vectors-warped", button);
return vbox;
}

50
app/tools/gimptexttool.c
View File

@ -54,6 +54,8 @@
#include "widgets/gimptexteditor.h"
#include "widgets/gimpviewabledialog.h"
#include "vectors/gimpvectors-warp.h"
#include "display/gimpdisplay.h"
#include "gimpeditselectiontool.h"
@ -106,6 +108,8 @@ static gboolean gimp_text_tool_idle_apply (GimpTextTool *text_tool);
static void gimp_text_tool_apply (GimpTextTool *text_tool);
static void gimp_text_tool_create_vectors (GimpTextTool *text_tool);
static void gimp_text_tool_create_vectors_warped
(GimpTextTool *text_tool);
static void gimp_text_tool_create_layer (GimpTextTool *text_tool,
GimpText *text);
@ -361,9 +365,11 @@ gimp_text_tool_connect (GimpTextTool *text_tool,
{
GimpTextOptions *options;
GtkWidget *button;
GtkWidget *button2;
options = GIMP_TEXT_OPTIONS (tool->tool_info->tool_options);
button = g_object_get_data (G_OBJECT (options), "gimp-text-to-vectors");
button = g_object_get_data (G_OBJECT (options), "gimp-text-to-vectors");
button2 = g_object_get_data (G_OBJECT (options), "gimp-text-to-vectors-warped");
if (text_tool->text)
{
@ -382,6 +388,14 @@ gimp_text_tool_connect (GimpTextTool *text_tool,
text_tool);
}
if (button2)
{
gtk_widget_set_sensitive (button2, FALSE);
g_signal_handlers_disconnect_by_func (button2,
gimp_text_tool_create_vectors_warped,
text_tool);
}
g_object_unref (text_tool->text);
text_tool->text = NULL;
@ -411,6 +425,14 @@ gimp_text_tool_connect (GimpTextTool *text_tool,
gtk_widget_set_sensitive (button, TRUE);
}
if (button2)
{
g_signal_connect_swapped (button2, "clicked",
G_CALLBACK (gimp_text_tool_create_vectors_warped),
text_tool);
gtk_widget_set_sensitive (button2, TRUE);
}
if (text_tool->editor)
gimp_text_tool_editor_update (text_tool);
}
@ -659,6 +681,32 @@ gimp_text_tool_create_vectors (GimpTextTool *text_tool)
gimp_image_flush (text_tool->image);
}
static void
gimp_text_tool_create_vectors_warped (GimpTextTool *text_tool)
{
GimpVectors *vectors0;
GimpVectors *vectors;
GimpText *text = text_tool->text;
gdouble box_height;
if (! text || ! text_tool->image || ! text_tool->layer)
return;
box_height = gimp_item_height (GIMP_ITEM (text_tool->layer));
vectors0 = gimp_image_get_active_vectors (text_tool->image);
if (! vectors0)
return;
vectors = gimp_text_vectors_new (text_tool->image, text_tool->text);
gimp_vectors_warp_vectors (vectors0, vectors, 0.5 * box_height);
gimp_image_add_vectors (text_tool->image, vectors, -1);
gimp_image_flush (text_tool->image);
}
static void
gimp_text_tool_create_layer (GimpTextTool *text_tool,
GimpText *text)

4
app/vectors/Makefile.am
View File

@ -32,6 +32,8 @@ libappvectors_a_SOURCES = \
gimpvectors-import.c \
gimpvectors-import.h \
gimpvectors-preview.c \
gimpvectors-preview.h
gimpvectors-preview.h \
gimpvectors-warp.c \
gimpvectors-warp.h
EXTRA_DIST = makefile.msc

162
app/vectors/gimpvectors-warp.c Normal file
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@ -0,0 +1,162 @@
/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpvectors-warp.c
* Copyright (C) 2005 Bill Skaggs <weskaggs@primate.ucdavis.edu>
*
* 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 <glib-object.h>
#include "vectors-types.h"
#include "core/gimp-utils.h"
#include "core/gimpcoords.h"
#include "gimpanchor.h"
#include "gimpstroke.h"
#include "gimpvectors.h"
#define EPSILON 0.2
#define DX 2.0
static void gimp_stroke_warp_point (const GimpStroke *stroke,
gdouble x,
gdouble y,
GimpCoords *point_warped,
gdouble y_offset);
static void gimp_vectors_warp_stroke (const GimpVectors *vectors,
GimpStroke *stroke,
gdouble y_offset);
void
gimp_vectors_warp_point (const GimpVectors *vectors,
GimpCoords *point,
GimpCoords *point_warped,
gdouble y_offset)
{
gdouble x = point->x;
gdouble y = point->y;
gdouble len;
GList *list;
GimpStroke *stroke;
for (list = vectors->strokes; list; list = g_list_next (list))
{
stroke = list->data;
len = gimp_vectors_stroke_get_length (vectors, stroke);
if (x < len)
break;
x -= len;
}
if (! list)
{
point_warped->x = 0;
point_warped->y = 0;
return;
}
gimp_stroke_warp_point (stroke, x, y, point_warped, y_offset);
}
static void
gimp_stroke_warp_point (const GimpStroke *stroke,
gdouble x,
gdouble y,
GimpCoords *point_warped,
gdouble y_offset)
{
GimpCoords *point_zero;
GimpCoords *point_minus;
GimpCoords *point_plus;
gdouble slope;
gdouble dx, dy, nx, ny, len;
point_zero = (GimpCoords*) g_new0 (GimpCoords, 1);
point_minus = (GimpCoords*) g_new0 (GimpCoords, 1);
point_plus = (GimpCoords*) g_new0 (GimpCoords, 1);
if (! gimp_stroke_get_point_at_dist (stroke, x, EPSILON, point_zero, &slope))
{
point_warped->x = 0;
point_warped->y = 0;
return;
}
point_warped->x = point_zero->x;
point_warped->y = point_zero->y;
if (! gimp_stroke_get_point_at_dist (stroke, x - DX, EPSILON, point_minus, &slope))
return;
if (! gimp_stroke_get_point_at_dist (stroke, x + DX, EPSILON, point_plus, &slope))
return;
dx = point_plus->x - point_minus->x;
dy = point_plus->y - point_minus->y;
len = hypot (dx, dy);
if (len < 0.01)
return;
nx = - dy / len;
ny = dx / len;
point_warped->x = point_zero->x + nx * (y - y_offset);
point_warped->y = point_zero->y + ny * (y - y_offset);
}
static void
gimp_vectors_warp_stroke (const GimpVectors *vectors,
GimpStroke *stroke,
gdouble y_offset)
{
GList *list;
for (list = stroke->anchors; list; list = g_list_next (list))
{
GimpAnchor *anchor = list->data;
gimp_vectors_warp_point (vectors,
&anchor->position, &anchor->position,
y_offset);
}
}
void
gimp_vectors_warp_vectors (const GimpVectors *vectors,
GimpVectors *vectors_in,
gdouble y_offset)
{
GList *list;
for (list = vectors_in->strokes; list; list = g_list_next (list))
{
GimpStroke *stroke = list->data;
gimp_vectors_warp_stroke (vectors, stroke, y_offset);
}
}

36
app/vectors/gimpvectors-warp.h Normal file
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@ -0,0 +1,36 @@
/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpvectors-warp.h
* Copyright (C) 2005 Bill Skaggs <weskaggs@primate.ucdavis.edu>
*
* 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.
*/
#ifndef __GIMP_VECTORS_WARP_H__
#define __GIMP_VECTORS_WARP_H__
void gimp_vectors_warp_point (const GimpVectors *vectors,
GimpCoords *point,
GimpCoords *point_warped,
gdouble y_offset);
void gimp_vectors_warp_vectors (const GimpVectors *vectors,
GimpVectors *vectors_in,
gdouble yoffset);
#endif /* __GIMP_VECTORS_WARP_H__ */

13
app/vectors/gimpvectors.c
View File

@ -263,6 +263,7 @@ gimp_vectors_init (GimpVectors *vectors)
item->visible = FALSE;
vectors->strokes = NULL;
vectors->freeze_count = 0;
vectors->precision = 0.2;
}
static void
@ -811,18 +812,22 @@ gimp_vectors_real_stroke_get_next (const GimpVectors *vectors,
gdouble
gimp_vectors_stroke_get_length (const GimpVectors *vectors,
const GimpStroke *prev)
const GimpStroke *stroke)
{
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
g_return_val_if_fail (GIMP_IS_STROKE (stroke), 0.0);
return GIMP_VECTORS_GET_CLASS (vectors)->stroke_get_length (vectors, prev);
return GIMP_VECTORS_GET_CLASS (vectors)->stroke_get_length (vectors, stroke);
}
static gdouble
gimp_vectors_real_stroke_get_length (const GimpVectors *vectors,
const GimpStroke *prev)
const GimpStroke *stroke)
{
g_printerr ("gimp_vectors_stroke_get_length: default implementation\n");
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), 0.0);
g_return_val_if_fail (GIMP_IS_STROKE (stroke), 0.0);
return (gimp_stroke_get_length (stroke, vectors->precision));
return 0.0;
}

1
app/vectors/gimpvectors.h
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@ -42,6 +42,7 @@ struct _GimpVectors
GList *strokes; /* The List of GimpStrokes */
gint freeze_count;
gdouble precision;
/* Stuff missing */
};