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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpText
* Copyright (C) 2002-2003 Sven Neumann <sven@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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <pango/pangocairo.h>
#include "libgimpcolor/gimpcolor.h"
#include "text-types.h"
#include "core/gimp.h"
#include "core/gimpchannel.h"
#include "core/gimpcontext.h"
#include "core/gimpdatafactory.h"
#include "core/gimpimage.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "core/gimpimage-undo.h"
#include "core/gimplayer-floating-selection.h"
#include "gimptext.h"
#include "gimptext-compat.h"
#include "gimptextlayer.h"
#include "gimp-intl.h"
GimpLayer *
text_render (GimpImage *image,
GimpDrawable *drawable,
GimpContext *context,
gint text_x,
gint text_y,
const gchar *fontname,
const gchar *text,
gint border,
gboolean antialias)
{
PangoFontDescription *desc;
GimpText *gtext;
GimpLayer *layer;
GimpRGB color;
gchar *font;
gdouble size;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (drawable == NULL || GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (drawable == NULL ||
gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (fontname != NULL, NULL);
g_return_val_if_fail (text != NULL, NULL);
if (! gimp_data_factory_data_wait (image->gimp->font_factory))
return NULL;
if (border < 0)
border = 0;
desc = pango_font_description_from_string (fontname);
size = PANGO_PIXELS (pango_font_description_get_size (desc));
pango_font_description_unset_fields (desc, PANGO_FONT_MASK_SIZE);
font = pango_font_description_to_string (desc);
pango_font_description_free (desc);
gimp_context_get_foreground (context, &color);
gtext = g_object_new (GIMP_TYPE_TEXT,
"text", text,
"font", font,
"font-size", size,
"antialias", antialias,
"border", border,
"color", &color,
NULL);
g_free (font);
layer = gimp_text_layer_new (image, gtext);
g_object_unref (gtext);
if (!layer)
return NULL;
/* Start a group undo */
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_TEXT,
_("Add Text Layer"));
/* Set the layer offsets */
gimp_item_set_offset (GIMP_ITEM (layer), text_x, text_y);
/* If there is a selection mask clear it--
* this might not always be desired, but in general,
* it seems like the correct behavior.
*/
if (! gimp_channel_is_empty (gimp_image_get_mask (image)))
gimp_channel_clear (gimp_image_get_mask (image), NULL, TRUE);
if (drawable == NULL)
{
/* If the drawable is NULL, create a new layer */
gimp_image_add_layer (image, layer, NULL, -1, TRUE);
}
else
{
/* Otherwise, instantiate the text as the new floating selection */
floating_sel_attach (layer, drawable);
}
/* end the group undo */
gimp_image_undo_group_end (image);
return layer;
}
gboolean
text_get_extents (Gimp *gimp,
const gchar *fontname,
const gchar *text,
gint *width,
gint *height,
gint *ascent,
gint *descent)
{
PangoFontDescription *font_desc;
PangoContext *context;
PangoLayout *layout;
PangoFontMap *fontmap;
PangoRectangle rect;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), FALSE);
g_return_val_if_fail (fontname != NULL, FALSE);
g_return_val_if_fail (text != NULL, FALSE);
if (! gimp_data_factory_data_wait (gimp->font_factory))
return FALSE;
fontmap = pango_cairo_font_map_new_for_font_type (CAIRO_FONT_TYPE_FT);
if (! fontmap)
g_error ("You are using a Pango that has been built against a cairo "
"that lacks the Freetype font backend");
pango_cairo_font_map_set_resolution (PANGO_CAIRO_FONT_MAP (fontmap),
72.0); /* FIXME: resolution */
context = pango_font_map_create_context (fontmap);
g_object_unref (fontmap);
layout = pango_layout_new (context);
g_object_unref (context);
font_desc = pango_font_description_from_string (fontname);
pango_layout_set_font_description (layout, font_desc);
pango_font_description_free (font_desc);
pango_layout_set_text (layout, text, -1);
pango_layout_get_pixel_extents (layout, NULL, &rect);
if (width)
*width = rect.width;
if (height)
*height = rect.height;
if (ascent || descent)
{
PangoLayoutIter *iter;
PangoLayoutLine *line;
iter = pango_layout_get_iter (layout);
line = pango_layout_iter_get_line_readonly (iter);
pango_layout_iter_free (iter);
pango_layout_line_get_pixel_extents (line, NULL, &rect);
if (ascent)
*ascent = PANGO_ASCENT (rect);
if (descent)
*descent = - PANGO_DESCENT (rect);
}
g_object_unref (layout);
return TRUE;
}
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