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Diffstat (limited to 'app/text/gimptext-compat.c')
| -rw-r--r-- | app/text/gimptext-compat.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/app/text/gimptext-compat.c b/app/text/gimptext-compat.c new file mode 100644 index 0000000..cb71f3e --- /dev/null +++ b/app/text/gimptext-compat.c @@ -0,0 +1,207 @@ +/* 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; +} |