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gimp/app/tools/gimptexttool.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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimpimage-undo.h"
#include "core/gimplayer-floating-sel.h"
#include "core/gimptoolinfo.h"
#include "config/gimpconfig.h"
#include "config/gimpconfig-utils.h"
#include "text/gimptext.h"
#include "text/gimptext-vectors.h"
#include "text/gimptextlayer.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimphelp-ids.h"
#include "display/gimpdisplay.h"
#include "gimptextoptions.h"
#include "gimptexttool.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gimp_text_tool_class_init (GimpTextToolClass *klass);
static void gimp_text_tool_init (GimpTextTool *tool);
static void gimp_text_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp);
static void gimp_text_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_text_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_text_tool_connect (GimpTextTool *tool,
GimpText *text,
gint off_x,
gint off_y);
static void gimp_text_tool_create_vectors (GimpTextTool *text_tool);
static void gimp_text_tool_create_layer (GimpTextTool *text_tool);
static void gimp_text_tool_editor (GimpTextTool *text_tool);
static void gimp_text_tool_buffer_changed (GtkTextBuffer *buffer,
GimpTextTool *text_tool);
/* local variables */
static GimpToolClass *parent_class = NULL;
/* public functions */
void
gimp_text_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_TEXT_TOOL,
GIMP_TYPE_TEXT_OPTIONS,
gimp_text_options_gui,
GIMP_CONTEXT_FONT_MASK,
"gimp-text-tool",
_("Text"),
_("Add text to the image"),
N_("/Tools/Te_xt"), "T",
NULL, GIMP_HELP_TOOL_TEXT,
GIMP_STOCK_TOOL_TEXT,
data);
}
GType
gimp_text_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpTextToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_text_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpTextTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_text_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_TOOL,
"GimpTextTool",
&tool_info, 0);
}
return tool_type;
}
/* private functions */
static void
gimp_text_tool_class_init (GimpTextToolClass *klass)
{
GimpToolClass *tool_class;
tool_class = GIMP_TOOL_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
tool_class->control = gimp_text_tool_control;
tool_class->button_press = gimp_text_tool_button_press;
tool_class->cursor_update = gimp_text_tool_cursor_update;
}
static void
gimp_text_tool_init (GimpTextTool *text_tool)
{
GimpTool *tool = GIMP_TOOL (text_tool);
text_tool->text = NULL;
text_tool->offset_x = 0;
text_tool->offset_y = 0;
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_tool_control_set_preserve (tool->control, FALSE);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TEXT_TOOL_CURSOR);
}
static void
gimp_text_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp)
{
GimpTextTool *text_tool = GIMP_TEXT_TOOL (tool);
switch (action)
{
case PAUSE:
break;
case RESUME:
break;
case HALT:
if (text_tool->editor)
gtk_widget_destroy (text_tool->editor);
gimp_text_tool_connect (text_tool, NULL, 0, 0);
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
static void
gimp_text_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpTextTool *text_tool = GIMP_TEXT_TOOL (tool);
GimpDrawable *drawable;
GimpText *text = NULL;
gint off_x = 0;
gint off_y = 0;
gboolean edit;
gimp_tool_control_activate (tool->control);
tool->gdisp = gdisp;
text_tool->x1 = coords->x;
text_tool->y1 = coords->y;
drawable = gimp_image_active_drawable (gdisp->gimage);
if (GIMP_IS_TEXT_LAYER (drawable))
{
GimpItem *item = GIMP_ITEM (drawable);
coords->x -= item->offset_x;
coords->y -= item->offset_y;
if (coords->x > 0 && coords->x < item->width &&
coords->y > 0 && coords->y < item->height)
{
text = gimp_text_layer_get_text (GIMP_TEXT_LAYER (drawable));
gimp_item_offsets (item, &off_x, &off_y);
}
}
edit = (! text || text == text_tool->text);
gimp_text_tool_connect (text_tool, text, off_x, off_y);
if (edit)
gimp_text_tool_editor (text_tool);
}
static void
gimp_text_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
static void
gimp_text_tool_create_vectors (GimpTextTool *text_tool)
{
GimpTool *tool = GIMP_TOOL (text_tool);
GimpVectors *vectors;
GimpImage *gimage;
if (! text_tool->text)
return;
gimage = tool->gdisp->gimage;
gimp_tool_control_set_preserve (tool->control, TRUE);
vectors = gimp_text_vectors_new (gimage, text_tool->text);
gimp_item_translate (GIMP_ITEM (vectors),
text_tool->offset_x, text_tool->offset_y, FALSE);
gimp_image_add_vectors (gimage, vectors, -1);
gimp_tool_control_set_preserve (tool->control, FALSE);
gimp_image_flush (gimage);
}
static void
gimp_text_tool_create_layer (GimpTextTool *text_tool)
{
GimpTool *tool = GIMP_TOOL (text_tool);
GimpTextOptions *options;
GimpImage *gimage;
GimpText *text;
GimpLayer *layer;
g_return_if_fail (text_tool->text == NULL);
options = GIMP_TEXT_OPTIONS (GIMP_TOOL (text_tool)->tool_info->tool_options);
gimage = tool->gdisp->gimage;
text = gimp_config_duplicate (GIMP_CONFIG (options->text));
layer = gimp_text_layer_new (gimage, text);
g_object_unref (text);
if (! layer)
return;
gimp_text_tool_connect (text_tool, text, text_tool->x1, text_tool->y1);
gimp_tool_control_set_preserve (tool->control, TRUE);
gimp_image_undo_group_start (gimage, GIMP_UNDO_GROUP_TEXT,
_("Add Text Layer"));
if (gimp_image_floating_sel (gimage))
floating_sel_anchor (gimp_image_floating_sel (gimage));
GIMP_ITEM (layer)->offset_x = text_tool->x1;
GIMP_ITEM (layer)->offset_y = text_tool->y1;
gimp_image_add_layer (gimage, layer, -1);
gimp_image_undo_group_end (gimage);
gimp_tool_control_set_preserve (tool->control, FALSE);
gimp_image_flush (gimage);
}
static void
gimp_text_tool_connect (GimpTextTool *text_tool,
GimpText *text,
gint off_x,
gint off_y)
{
GimpTool *tool = GIMP_TOOL (text_tool);
GimpTextOptions *options;
GtkWidget *button;
if (text_tool->text == text)
return;
options = GIMP_TEXT_OPTIONS (tool->tool_info->tool_options);
button = g_object_get_data (G_OBJECT (options), "gimp-text-to-vectors");
if (text_tool->text)
{
if (button)
{
gtk_widget_set_sensitive (button, FALSE);
g_signal_handlers_disconnect_by_func (button,
gimp_text_tool_create_vectors,
text_tool);
}
gimp_config_disconnect (G_OBJECT (options->text),
G_OBJECT (text_tool->text));
g_object_unref (text_tool->text);
text_tool->text = NULL;
text_tool->offset_x = 0;
text_tool->offset_y = 0;
g_object_set (options->text, "text", NULL, NULL);
}
if (text)
{
text_tool->text = g_object_ref (text);
gimp_config_sync (GIMP_CONFIG (text_tool->text),
GIMP_CONFIG (options->text), 0);
gimp_config_connect (G_OBJECT (options->text),
G_OBJECT (text_tool->text),
NULL);
text_tool->offset_x = off_x;
text_tool->offset_y = off_y;
if (button)
{
g_signal_connect_swapped (button, "clicked",
G_CALLBACK (gimp_text_tool_create_vectors),
text_tool);
gtk_widget_set_sensitive (button, TRUE);
}
}
}
static void
gimp_text_tool_editor (GimpTextTool *text_tool)
{
GimpTextOptions *options;
if (text_tool->editor)
{
gtk_window_present (GTK_WINDOW (text_tool->editor));
return;
}
options = GIMP_TEXT_OPTIONS (GIMP_TOOL (text_tool)->tool_info->tool_options);
text_tool->editor = gimp_text_options_editor_new (options,
_("GIMP Text Editor"));
g_object_add_weak_pointer (G_OBJECT (text_tool->editor),
(gpointer *) &text_tool->editor);
gimp_dialog_factory_add_foreign (gimp_dialog_factory_from_name ("toplevel"),
"gimp-text-tool-dialog",
text_tool->editor);
gtk_widget_show (text_tool->editor);
if (! text_tool->text)
{
GClosure *closure;
closure = g_cclosure_new (G_CALLBACK (gimp_text_tool_buffer_changed),
text_tool, NULL);
g_object_watch_closure (G_OBJECT (text_tool->editor), closure);
g_signal_connect_closure (options->buffer, "changed", closure, FALSE);
}
}
static void
gimp_text_tool_buffer_changed (GtkTextBuffer *buffer,
GimpTextTool *text_tool)
{
if (! text_tool->text)
gimp_text_tool_create_layer (text_tool);
}
void
gimp_text_tool_set_layer (GimpTextTool *text_tool,
GimpTextLayer *text_layer)
{
g_return_if_fail (GIMP_IS_TEXT_TOOL (text_tool));
g_return_if_fail (text_layer == NULL || GIMP_IS_TEXT_LAYER (text_layer));
if (text_layer->text)
{
gint x, y;
gimp_item_offsets (GIMP_ITEM (text_layer), &x, &y);
gimp_text_tool_connect (text_tool, text_layer->text, x, y);
}
}
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