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app/text/Makefile.am app/text/gimptextlayout-private.h new files that
2003-07-06 Sven Neumann <sven@gimp.org> * app/text/Makefile.am * app/text/gimptextlayout-private.h * app/text/gimptextlayout-render.[ch]: new files that implement text rendering. Right now it's basically code copied from PangoFT2 but having it here will allow me to implement text transformations. * app/text/gimptextlayout.[ch] * app/text/gimptextlayer.c: changed accordingly.
This commit is contained in:
Sven Neumann
Sven Neumann
parent
47021d0a22
commit
7cf24c4f86
11
ChangeLog
11
ChangeLog
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@ -1,3 +1,14 @@
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2003-07-06 Sven Neumann <sven@gimp.org>
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* app/text/Makefile.am
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* app/text/gimptextlayout-private.h
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* app/text/gimptextlayout-render.[ch]: new files that implement
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text rendering. Right now it's basically code copied from PangoFT2
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but having it here will allow me to implement text transformations.
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* app/text/gimptextlayout.[ch]
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* app/text/gimptextlayer.c: changed accordingly.
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2003-07-06 Sven Neumann <sven@gimp.org>
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* etc/ps-menurc: an updated version from Eric Pierce.
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@ -32,7 +32,10 @@ libapptext_a_sources = \
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gimptextlayer.c \
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gimptextlayer.h \
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gimptextlayout.c \
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gimptextlayout.h
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gimptextlayout.h \
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gimptextlayout-private.h\
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gimptextlayout-render.c \
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gimptextlayout-render.h
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libapptext_a_built_sources = text-enums.c
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@ -39,6 +39,7 @@
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#include "gimptext.h"
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#include "gimptextlayer.h"
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#include "gimptextlayout.h"
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#include "gimptextlayout-render.h"
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#include "gimp-intl.h"
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41
app/text/gimptextlayout-private.h
Normal file
41
app/text/gimptextlayout-private.h
Normal file
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@ -0,0 +1,41 @@
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/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* GimpText
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* Copyright (C) 2002-2003 Sven Neumann <sven@gimp.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __GIMP_TEXT_LAYOUT_PRIVATE_H__
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#define __GIMP_TEXT_LAYOUT_PRIVATE_H__
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struct _GimpTextLayout
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{
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GObject object;
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GimpText *text;
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PangoLayout *layout;
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PangoRectangle extents;
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};
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struct _GimpTextLayoutClass
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{
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GObjectClass parent_class;
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};
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#endif /* __GIMP_TEXT_LAYOUT_PRIVATE_H__ */
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295
app/text/gimptextlayout-render.c
Normal file
295
app/text/gimptextlayout-render.c
Normal file
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@ -0,0 +1,295 @@
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/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* GimpText
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* Copyright (C) 2002-2003 Sven Neumann <sven@gimp.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <glib-object.h>
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#include <pango/pangoft2.h>
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#include "libgimpbase/gimpbase.h"
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#include "text-types.h"
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#include "base/pixel-region.h"
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#include "base/tile-manager.h"
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#include "gimptext.h"
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#include "gimptextlayout.h"
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#include "gimptextlayout-private.h"
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#include "gimptextlayout-render.h"
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/* Define to 1 to use the native PangoFT2 render routine. */
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#define USE_PANGOFT2_RENDER 0
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/* This file duplicates quite a lot of code from pangoft2.c.
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* At some point all this should be folded back into Pango.
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*/
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static void gimp_text_render_layout (GimpTextLayout *text_layout,
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FT_Bitmap *bitmap,
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gint x,
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gint y);
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static void gimp_text_render_layout_line (GimpTextLayout *text_layout,
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FT_Bitmap *bitmap,
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PangoLayoutLine *line,
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gint x,
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gint y);
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static void gimp_text_render (GimpTextLayout *text_layout,
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FT_Bitmap *bitmap,
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PangoFont *font,
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PangoGlyphString *glyphs,
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gint x,
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gint y);
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static gint gimp_text_layout_get_load_flags (GimpTextLayout *text_layout);
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TileManager *
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gimp_text_layout_render (GimpTextLayout *layout,
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gint width,
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gint height)
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{
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TileManager *mask;
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FT_Bitmap bitmap;
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PixelRegion maskPR;
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gint i;
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gint x, y;
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g_return_val_if_fail (GIMP_IS_TEXT_LAYOUT (layout), NULL);
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gimp_text_layout_get_offsets (layout, &x, &y);
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bitmap.width = width;
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bitmap.rows = height;
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bitmap.pitch = width;
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if (bitmap.pitch & 3)
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bitmap.pitch += 4 - (bitmap.pitch & 3);
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bitmap.buffer = g_malloc0 (bitmap.rows * bitmap.pitch);
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#if USE_PANGOFT2_RENDER
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pango_ft2_render_layout (&bitmap, layout->layout, x, y);
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#else
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gimp_text_render_layout (layout, &bitmap, x, y);
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#endif
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mask = tile_manager_new (width, height, 1);
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pixel_region_init (&maskPR, mask, 0, 0, width, height, TRUE);
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for (i = 0; i < height; i++)
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pixel_region_set_row (&maskPR,
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0, i, width, bitmap.buffer + i * bitmap.pitch);
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g_free (bitmap.buffer);
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return mask;
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}
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static void
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gimp_text_render_layout (GimpTextLayout *text_layout,
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FT_Bitmap *bitmap,
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gint x,
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gint y)
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{
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PangoLayout *layout = text_layout->layout;
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PangoLayoutIter *iter;
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g_return_if_fail (bitmap != NULL);
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g_return_if_fail (PANGO_IS_LAYOUT (layout));
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iter = pango_layout_get_iter (layout);
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do
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{
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PangoRectangle rect;
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PangoLayoutLine *line;
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gint baseline;
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line = pango_layout_iter_get_line (iter);
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pango_layout_iter_get_line_extents (iter, NULL, &rect);
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baseline = pango_layout_iter_get_baseline (iter);
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gimp_text_render_layout_line (text_layout,
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bitmap,
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line,
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x + PANGO_PIXELS (rect.x),
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y + PANGO_PIXELS (baseline));
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}
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while (pango_layout_iter_next_line (iter));
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pango_layout_iter_free (iter);
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}
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static void
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gimp_text_render_layout_line (GimpTextLayout *text_layout,
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FT_Bitmap *bitmap,
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PangoLayoutLine *line,
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gint x,
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gint y)
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{
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PangoRectangle rect;
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GSList *list;
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gint x_off = 0;
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for (list = line->runs; list; list = list->next)
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{
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PangoLayoutRun *run = list->data;
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pango_glyph_string_extents (run->glyphs, run->item->analysis.font,
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NULL, &rect);
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gimp_text_render (text_layout, bitmap,
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run->item->analysis.font, run->glyphs,
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x + PANGO_PIXELS (x_off), y);
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x_off += rect.width;
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}
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}
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static void
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gimp_text_render (GimpTextLayout *text_layout,
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FT_Bitmap *bitmap,
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PangoFont *font,
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PangoGlyphString *glyphs,
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gint x,
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gint y)
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{
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PangoGlyphInfo *gi;
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FT_Face face;
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gint flags;
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gint i;
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gint x_position = 0;
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gint ix, iy, ixoff, iyoff, y_start, y_limit, x_start, x_limit;
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const guchar *src;
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guchar *dest;
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face = pango_ft2_font_get_face (font);
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flags = gimp_text_layout_get_load_flags (text_layout);
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for (i = 0, gi = glyphs->glyphs; i < glyphs->num_glyphs; i++, gi++)
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{
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if (gi->glyph)
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{
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FT_Load_Glyph (face, (FT_UInt) gi->glyph, flags);
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FT_Render_Glyph (face->glyph,
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(flags & FT_LOAD_TARGET_MONO ?
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ft_render_mode_mono : ft_render_mode_normal));
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ixoff = x + PANGO_PIXELS (x_position + gi->geometry.x_offset);
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iyoff = y + PANGO_PIXELS (gi->geometry.y_offset);
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x_start = MAX (0, - (ixoff + face->glyph->bitmap_left));
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x_limit = MIN (face->glyph->bitmap.width,
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bitmap->width - (ixoff + face->glyph->bitmap_left));
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y_start = MAX (0, - (iyoff - face->glyph->bitmap_top));
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y_limit = MIN (face->glyph->bitmap.rows,
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bitmap->rows - (iyoff - face->glyph->bitmap_top));
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src = face->glyph->bitmap.buffer +
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y_start * face->glyph->bitmap.pitch;
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dest = bitmap->buffer +
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(y_start + iyoff - face->glyph->bitmap_top) * bitmap->pitch +
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x_start + ixoff + face->glyph->bitmap_left;
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switch (face->glyph->bitmap.pixel_mode)
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{
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case ft_pixel_mode_grays:
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src += x_start;
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for (iy = y_start; iy < y_limit; iy++)
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{
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const guchar *s = src;
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guchar *d = dest;
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for (ix = x_start; ix < x_limit; ix++)
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{
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switch (*s)
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{
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case 0:
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break;
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case 0xff:
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*d = 0xff;
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default:
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*d = MIN ((gushort) *d + (const gushort) *s, 0xff);
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break;
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}
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s++;
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d++;
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}
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dest += bitmap->pitch;
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src += face->glyph->bitmap.pitch;
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}
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break;
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case ft_pixel_mode_mono:
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src += x_start / 8;
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for (iy = y_start; iy < y_limit; iy++)
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{
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const guchar *s = src;
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guchar *d = dest;
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for (ix = x_start; ix < x_limit; ix++)
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{
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if ((*s) & (1 << (7 - (ix % 8))))
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*d |= 0xff;
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if ((ix % 8) == 7)
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s++;
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d++;
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}
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dest += bitmap->pitch;
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src += face->glyph->bitmap.pitch;
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}
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break;
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default:
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break;
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}
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}
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x_position += glyphs->glyphs[i].geometry.width;
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}
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}
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static gint
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gimp_text_layout_get_load_flags (GimpTextLayout *text_layout)
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{
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GimpText *text = text_layout->text;
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gint flags;
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if (text->antialias)
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flags = FT_LOAD_NO_BITMAP;
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else
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flags = FT_LOAD_TARGET_MONO;
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if (!text->hinting)
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flags |= FT_LOAD_NO_HINTING;
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if (text->autohint)
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flags |= FT_LOAD_FORCE_AUTOHINT;
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return flags;
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}
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31
app/text/gimptextlayout-render.h
Normal file
31
app/text/gimptextlayout-render.h
Normal file
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@ -0,0 +1,31 @@
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/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
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*
|
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* GimpText
|
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* Copyright (C) 2002-2003 Sven Neumann <sven@gimp.org>
|
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*
|
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* 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.
|
||||
*
|
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* 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.
|
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*/
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#ifndef __GIMP_TEXT_LAYOUT_RENDER_H__
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#define __GIMP_TEXT_LAYOUT_RENDER_H__
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TileManager * gimp_text_layout_render (GimpTextLayout *layout,
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gint width,
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gint height);
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#endif /* __GIMP_TEXT_LAYOUT_RENDER_H__ */
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@ -28,28 +28,11 @@
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#include "text-types.h"
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#include "base/pixel-region.h"
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#include "base/tile-manager.h"
|
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|
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#include "core/gimpimage.h"
|
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|
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#include "gimptext.h"
|
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#include "gimptextlayout.h"
|
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|
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|
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struct _GimpTextLayout
|
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{
|
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GObject object;
|
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|
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GimpText *text;
|
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PangoLayout *layout;
|
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PangoRectangle extents;
|
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};
|
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|
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struct _GimpTextLayoutClass
|
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{
|
||||
GObjectClass parent_class;
|
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};
|
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#include "gimptextlayout-private.h"
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|
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|
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static void gimp_text_layout_class_init (GimpTextLayoutClass *klass);
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|
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@ -261,43 +244,6 @@ gimp_text_layout_get_offsets (GimpTextLayout *layout,
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*y = layout->extents.y;
|
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}
|
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|
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TileManager *
|
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gimp_text_layout_render (GimpTextLayout *layout,
|
||||
gint width,
|
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gint height)
|
||||
{
|
||||
TileManager *mask;
|
||||
FT_Bitmap bitmap;
|
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PixelRegion maskPR;
|
||||
gint i;
|
||||
gint x, y;
|
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|
||||
g_return_val_if_fail (GIMP_IS_TEXT_LAYOUT (layout), NULL);
|
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|
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gimp_text_layout_get_offsets (layout, &x, &y);
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|
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bitmap.width = width;
|
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bitmap.rows = height;
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bitmap.pitch = width;
|
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if (bitmap.pitch & 3)
|
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bitmap.pitch += 4 - (bitmap.pitch & 3);
|
||||
|
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bitmap.buffer = g_malloc0 (bitmap.rows * bitmap.pitch);
|
||||
|
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pango_ft2_render_layout (&bitmap, layout->layout, x, y);
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||||
|
||||
mask = tile_manager_new (width, height, 1);
|
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pixel_region_init (&maskPR, mask, 0, 0, width, height, TRUE);
|
||||
|
||||
for (i = 0; i < height; i++)
|
||||
pixel_region_set_row (&maskPR,
|
||||
0, i, width, bitmap.buffer + i * bitmap.pitch);
|
||||
|
||||
g_free (bitmap.buffer);
|
||||
|
||||
return mask;
|
||||
}
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||||
|
||||
static void
|
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gimp_text_layout_position (GimpTextLayout *layout)
|
||||
{
|
||||
|
|
@ -310,7 +256,7 @@ gimp_text_layout_position (GimpTextLayout *layout)
|
|||
layout->extents.x = 0;
|
||||
layout->extents.width = 0;
|
||||
layout->extents.height = 0;
|
||||
|
||||
|
||||
pango_layout_get_pixel_extents (layout->layout, &ink, &logical);
|
||||
|
||||
#ifdef VERBOSE
|
||||
|
|
|
|||
|
|
@ -41,9 +41,6 @@ gboolean gimp_text_layout_get_size (GimpTextLayout *layout,
|
|||
void gimp_text_layout_get_offsets (GimpTextLayout *layout,
|
||||
gint *x,
|
||||
gint *y);
|
||||
TileManager * gimp_text_layout_render (GimpTextLayout *layout,
|
||||
gint width,
|
||||
gint height);
|
||||
|
||||
|
||||
#endif /* __GIMP_TEXT_LAYOUT_H__ */
|
||||
|
|
|
|||
Loading…
Reference in a new issue