mirror of https://github.com/GNOME/gimp.git
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "core-types.h"
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#include "gegl/gimp-babl.h"
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#include "gimpimage.h"
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#include "gimpimage-preview.h"
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#include "gimpimage-private.h"
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#include "gimppickable.h"
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#include "gimpprojectable.h"
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#include "gimpprojection.h"
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#include "gimptempbuf.h"
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void
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gimp_image_get_preview_size (GimpViewable *viewable,
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gint size,
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gboolean is_popup,
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gboolean dot_for_dot,
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gint *width,
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gint *height)
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{
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GimpImage *image = GIMP_IMAGE (viewable);
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gdouble xres;
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gdouble yres;
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gimp_image_get_resolution (image, &xres, &yres);
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gimp_viewable_calc_preview_size (gimp_image_get_width (image),
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gimp_image_get_height (image),
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size,
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size,
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dot_for_dot,
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xres,
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yres,
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width,
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height,
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NULL);
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}
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gboolean
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gimp_image_get_popup_size (GimpViewable *viewable,
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gint width,
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gint height,
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gboolean dot_for_dot,
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gint *popup_width,
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gint *popup_height)
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{
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GimpImage *image = GIMP_IMAGE (viewable);
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if (gimp_image_get_width (image) > width ||
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gimp_image_get_height (image) > height)
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{
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gboolean scaling_up;
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gimp_viewable_calc_preview_size (gimp_image_get_width (image),
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gimp_image_get_height (image),
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width * 2,
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height * 2,
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dot_for_dot, 1.0, 1.0,
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popup_width,
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popup_height,
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&scaling_up);
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if (scaling_up)
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{
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*popup_width = gimp_image_get_width (image);
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*popup_height = gimp_image_get_height (image);
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}
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return TRUE;
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}
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return FALSE;
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}
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GimpTempBuf *
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gimp_image_get_new_preview (GimpViewable *viewable,
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GimpContext *context,
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gint width,
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gint height)
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{
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GimpImage *image = GIMP_IMAGE (viewable);
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const Babl *format;
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GimpTempBuf *buf;
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gdouble scale_x;
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gdouble scale_y;
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scale_x = (gdouble) width / (gdouble) gimp_image_get_width (image);
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scale_y = (gdouble) height / (gdouble) gimp_image_get_height (image);
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format = gimp_projectable_get_format (GIMP_PROJECTABLE (image));
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format = gimp_babl_format (gimp_babl_format_get_base_type (format),
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GIMP_PRECISION_U8_GAMMA,
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babl_format_has_alpha (format));
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buf = gimp_temp_buf_new (width, height, format);
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gegl_buffer_get (gimp_pickable_get_buffer (GIMP_PICKABLE (image)),
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GEGL_RECTANGLE (0, 0, width, height),
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MIN (scale_x, scale_y),
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gimp_temp_buf_get_format (buf),
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gimp_temp_buf_get_data (buf),
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_CLAMP);
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return buf;
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}
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