mirror of https://github.com/GNOME/gimp.git
153 lines
4.9 KiB
C
153 lines
4.9 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 <gegl.h>
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#include <gtk/gtk.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "libgimpwidgets/gimpwidgets.h"
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#include "display-types.h"
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#include "config/gimpdisplayconfig.h"
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#include "gegl/gimp-gegl-utils.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpimage.h"
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#include "core/gimppickable.h"
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#include "core/gimpprojectable.h"
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#include "core/gimpprojection.h"
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#include "gimpdisplay.h"
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#include "gimpdisplayshell.h"
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#include "gimpdisplayshell-transform.h"
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#include "gimpdisplayshell-filter.h"
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#include "gimpdisplayshell-render.h"
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#include "gimpdisplayshell-scroll.h"
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void
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gimp_display_shell_render (GimpDisplayShell *shell,
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cairo_t *cr,
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gint x,
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gint y,
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gint w,
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gint h)
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{
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GimpImage *image;
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GimpProjection *projection;
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GeglBuffer *buffer;
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gint viewport_offset_x;
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gint viewport_offset_y;
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gint viewport_width;
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gint viewport_height;
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g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
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g_return_if_fail (cr != NULL);
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g_return_if_fail (w > 0 && h > 0);
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image = gimp_display_get_image (shell->display);
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projection = gimp_image_get_projection (image);
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buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (projection));
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gimp_display_shell_scroll_get_scaled_viewport (shell,
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&viewport_offset_x,
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&viewport_offset_y,
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&viewport_width,
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&viewport_height);
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gegl_buffer_get (buffer,
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GEGL_RECTANGLE (x + viewport_offset_x,
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y + viewport_offset_y,
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w, h),
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shell->scale_x,
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babl_format ("cairo-ARGB32"),
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cairo_image_surface_get_data (shell->render_surface),
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cairo_image_surface_get_stride (shell->render_surface),
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GEGL_ABYSS_NONE);
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/* apply filters to the rendered projection */
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if (shell->filter_stack)
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{
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cairo_surface_t *sub = shell->render_surface;
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if (w != GIMP_DISPLAY_RENDER_BUF_WIDTH ||
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h != GIMP_DISPLAY_RENDER_BUF_HEIGHT)
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sub = cairo_image_surface_create_for_data (cairo_image_surface_get_data (sub),
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CAIRO_FORMAT_ARGB32, w, h,
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GIMP_DISPLAY_RENDER_BUF_WIDTH * 4);
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gimp_color_display_stack_convert_surface (shell->filter_stack, sub);
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if (sub != shell->render_surface)
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cairo_surface_destroy (sub);
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}
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cairo_surface_mark_dirty_rectangle (shell->render_surface, 0, 0, w, h);
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#if 0
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if (shell->mask)
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{
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GeglBuffer *buffer;
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if (! shell->mask_surface)
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{
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shell->mask_surface =
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cairo_image_surface_create (CAIRO_FORMAT_A8,
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GIMP_DISPLAY_RENDER_BUF_WIDTH,
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GIMP_DISPLAY_RENDER_BUF_HEIGHT);
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}
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buffer = gimp_drawable_get_buffer (shell->mask);
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tiles = gimp_gegl_buffer_get_tiles (buffer);
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/* The mask does not (yet) have an image pyramid, use 0 as level, */
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gimp_display_shell_render_info_init (&info,
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shell, x, y, w, h,
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shell->mask_surface,
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tiles, 0, FALSE);
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render_image_alpha (&info);
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cairo_surface_mark_dirty (shell->mask_surface);
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}
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#endif
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/* put it to the screen */
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cairo_save (cr);
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cairo_rectangle (cr, x, y, w, h);
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cairo_clip (cr);
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cairo_set_source_surface (cr, shell->render_surface, x, y);
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cairo_paint (cr);
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#if 0
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if (shell->mask)
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{
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gimp_cairo_set_source_rgba (cr, &shell->mask_color);
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cairo_mask_surface (cr, shell->mask_surface,
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x + disp_xoffset, y + disp_yoffset);
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}
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#endif
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cairo_restore (cr);
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}
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