Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 351 insertions, 0 deletions

diff --git a/app/display/gimpdisplayshell-render.c b/app/display/gimpdisplayshell-render.c
new file mode 100644
index 0000000..a1525bf
--- /dev/null
+++ b/app/display/gimpdisplayshell-render.c
@@ -0,0 +1,351 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * 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 <gtk/gtk.h>
+
+#include "libgimpmath/gimpmath.h"
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "display-types.h"
+
+#include "config/gimpdisplayconfig.h"
+
+#include "gegl/gimp-gegl-utils.h"
+
+#include "core/gimpdrawable.h"
+#include "core/gimpimage.h"
+#include "core/gimppickable.h"
+#include "core/gimpprojectable.h"
+
+#include "gimpdisplay.h"
+#include "gimpdisplayshell.h"
+#include "gimpdisplayshell-transform.h"
+#include "gimpdisplayshell-filter.h"
+#include "gimpdisplayshell-profile.h"
+#include "gimpdisplayshell-render.h"
+#include "gimpdisplayshell-scroll.h"
+#include "gimpdisplayxfer.h"
+
+
+void
+gimp_display_shell_render (GimpDisplayShell *shell,
+                           cairo_t          *cr,
+                           gint              x,
+                           gint              y,
+                           gint              w,
+                           gint              h,
+                           gdouble           scale)
+{
+  GimpImage       *image;
+  GeglBuffer      *buffer;
+#ifdef USE_NODE_BLIT
+  GeglNode        *node;
+#endif
+  GeglAbyssPolicy  abyss_policy;
+  cairo_surface_t *xfer;
+  gint             xfer_src_x;
+  gint             xfer_src_y;
+  gint             mask_src_x = 0;
+  gint             mask_src_y = 0;
+  gint             cairo_stride;
+  guchar          *cairo_data;
+
+  g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
+  g_return_if_fail (cr != NULL);
+  g_return_if_fail (w > 0 && w <= GIMP_DISPLAY_RENDER_BUF_WIDTH);
+  g_return_if_fail (h > 0 && h <= GIMP_DISPLAY_RENDER_BUF_HEIGHT);
+  g_return_if_fail (scale > 0.0);
+
+  image  = gimp_display_get_image (shell->display);
+  buffer = gimp_pickable_get_buffer (
+    gimp_display_shell_get_pickable (shell));
+#ifdef USE_NODE_BLIT
+  node   = gimp_projectable_get_graph (GIMP_PROJECTABLE (image));
+
+  gimp_projectable_begin_render (GIMP_PROJECTABLE (image));
+#endif
+
+  if (shell->show_all)
+    abyss_policy = GEGL_ABYSS_NONE;
+  else
+    abyss_policy = GEGL_ABYSS_CLAMP;
+
+  xfer = gimp_display_xfer_get_surface (shell->xfer, w, h,
+                                        &xfer_src_x, &xfer_src_y);
+
+  cairo_stride = cairo_image_surface_get_stride (xfer);
+  cairo_data   = cairo_image_surface_get_data (xfer) +
+                 xfer_src_y * cairo_stride + xfer_src_x * 4;
+
+  if (shell->profile_transform ||
+      gimp_display_shell_has_filter (shell))
+    {
+      gboolean can_convert_to_u8;
+
+      /*  if there is a profile transform or a display filter, we need
+       *  to use temp buffers
+       */
+
+      can_convert_to_u8 = gimp_display_shell_profile_can_convert_to_u8 (shell);
+
+      /*  create the filter buffer if we have filters, or can't convert
+       *  to u8 directly
+       */
+      if ((gimp_display_shell_has_filter (shell) || ! can_convert_to_u8) &&
+          ! shell->filter_buffer)
+        {
+          gint fw = GIMP_DISPLAY_RENDER_BUF_WIDTH;
+          gint fh = GIMP_DISPLAY_RENDER_BUF_HEIGHT;
+
+          shell->filter_data =
+            gegl_malloc (fw * fh *
+                         babl_format_get_bytes_per_pixel (shell->filter_format));
+
+          shell->filter_stride =
+            fw * babl_format_get_bytes_per_pixel (shell->filter_format);
+
+          shell->filter_buffer =
+            gegl_buffer_linear_new_from_data (shell->filter_data,
+                                              shell->filter_format,
+                                              GEGL_RECTANGLE (0, 0, fw, fh),
+                                              GEGL_AUTO_ROWSTRIDE,
+                                              (GDestroyNotify) gegl_free,
+                                              shell->filter_data);
+        }
+
+      if (! gimp_display_shell_has_filter (shell) || shell->filter_transform)
+        {
+          /*  if there are no filters, or there is a filter transform,
+           *  load the projection pixels into the profile_buffer
+           */
+#ifndef USE_NODE_BLIT
+          gegl_buffer_get (buffer,
+                           GEGL_RECTANGLE (x, y, w, h), scale,
+                           gimp_projectable_get_format (GIMP_PROJECTABLE (image)),
+                           shell->profile_data, shell->profile_stride,
+                           abyss_policy);
+#else
+          gegl_node_blit (node,
+                          scale, GEGL_RECTANGLE (x, y, w, h),
+                          gimp_projectable_get_format (GIMP_PROJECTABLE (image)),
+                          shell->profile_data, shell->profile_stride,
+                          GEGL_BLIT_CACHE);
+#endif
+        }
+      else
+        {
+          /*  otherwise, load the pixels directly into the filter_buffer
+           */
+#ifndef USE_NODE_BLIT
+          gegl_buffer_get (buffer,
+                           GEGL_RECTANGLE (x, y, w, h), scale,
+                           shell->filter_format,
+                           shell->filter_data, shell->filter_stride,
+                           abyss_policy);
+#else
+          gegl_node_blit (node,
+                          scale, GEGL_RECTANGLE (x, y, w, h),
+                          shell->filter_format,
+                          shell->filter_data, shell->filter_stride,
+                          GEGL_BLIT_CACHE);
+#endif
+        }
+
+      /*  if there is a filter transform, convert the pixels from
+       *  the profile_buffer to the filter_buffer
+       */
+      if (shell->filter_transform)
+        {
+          gimp_color_transform_process_buffer (shell->filter_transform,
+                                               shell->profile_buffer,
+                                               GEGL_RECTANGLE (0, 0, w, h),
+                                               shell->filter_buffer,
+                                               GEGL_RECTANGLE (0, 0, w, h));
+        }
+
+      /*  if there are filters, apply them
+       */
+      if (gimp_display_shell_has_filter (shell))
+        {
+          GeglBuffer *filter_buffer;
+
+          /*  shift the filter_buffer so that the area passed to
+           *  the filters is the real render area, allowing for
+           *  position-dependent filters
+           */
+          filter_buffer = g_object_new (GEGL_TYPE_BUFFER,
+                                        "source", shell->filter_buffer,
+                                        "shift-x", -x,
+                                        "shift-y", -y,
+                                        NULL);
+
+          /*  convert the filter_buffer in place
+           */
+          gimp_color_display_stack_convert_buffer (shell->filter_stack,
+                                                   filter_buffer,
+                                                   GEGL_RECTANGLE (x, y, w, h));
+
+          g_object_unref (filter_buffer);
+        }
+
+      /*  if there is a profile transform...
+       */
+      if (shell->profile_transform)
+        {
+          if (gimp_display_shell_has_filter (shell))
+            {
+              /*  if we have filters, convert the pixels in the filter_buffer
+               *  in-place
+               */
+              gimp_color_transform_process_buffer (shell->profile_transform,
+                                                   shell->filter_buffer,
+                                                   GEGL_RECTANGLE (0, 0, w, h),
+                                                   shell->filter_buffer,
+                                                   GEGL_RECTANGLE (0, 0, w, h));
+            }
+          else if (! can_convert_to_u8)
+            {
+              /*  otherwise, if we can't convert to u8 directly, convert
+               *  the pixels from the profile_buffer to the filter_buffer
+               */
+              gimp_color_transform_process_buffer (shell->profile_transform,
+                                                   shell->profile_buffer,
+                                                   GEGL_RECTANGLE (0, 0, w, h),
+                                                   shell->filter_buffer,
+                                                   GEGL_RECTANGLE (0, 0, w, h));
+            }
+          else
+            {
+              GeglBuffer *buffer =
+                gegl_buffer_linear_new_from_data (cairo_data,
+                                                  babl_format ("cairo-ARGB32"),
+                                                  GEGL_RECTANGLE (0, 0, w, h),
+                                                  cairo_stride,
+                                                  NULL, NULL);
+
+              /*  otherwise, convert the profile_buffer directly into
+               *  the cairo_buffer
+               */
+              gimp_color_transform_process_buffer (shell->profile_transform,
+                                                   shell->profile_buffer,
+                                                   GEGL_RECTANGLE (0, 0, w, h),
+                                                   buffer,
+                                                   GEGL_RECTANGLE (0, 0, w, h));
+              g_object_unref (buffer);
+            }
+        }
+
+      /*  finally, copy the filter buffer to the cairo-ARGB32 buffer,
+       *  if necessary
+       */
+      if (gimp_display_shell_has_filter (shell) || ! can_convert_to_u8)
+        {
+          gegl_buffer_get (shell->filter_buffer,
+                           GEGL_RECTANGLE (0, 0, w, h), 1.0,
+                           babl_format ("cairo-ARGB32"),
+                           cairo_data, cairo_stride,
+                           GEGL_ABYSS_NONE);
+        }
+    }
+  else
+    {
+      /*  otherwise we can copy the projection pixels straight to the
+       *  cairo-ARGB32 buffer
+       */
+#ifndef USE_NODE_BLIT
+      gegl_buffer_get (buffer,
+                       GEGL_RECTANGLE (x, y, w, h), scale,
+                       babl_format ("cairo-ARGB32"),
+                       cairo_data, cairo_stride,
+                       abyss_policy);
+#else
+      gegl_node_blit (node,
+                      scale, GEGL_RECTANGLE (x, y, w, h),
+                      babl_format ("cairo-ARGB32"),
+                      cairo_data, cairo_stride,
+                      GEGL_BLIT_CACHE);
+#endif
+    }
+
+#ifdef USE_NODE_BLIT
+  gimp_projectable_end_render (GIMP_PROJECTABLE (image));
+#endif
+
+  if (shell->mask)
+    {
+      if (! shell->mask_surface)
+        {
+          shell->mask_surface =
+            cairo_image_surface_create (CAIRO_FORMAT_A8,
+                                        GIMP_DISPLAY_RENDER_BUF_WIDTH,
+                                        GIMP_DISPLAY_RENDER_BUF_HEIGHT);
+        }
+
+      cairo_surface_mark_dirty (shell->mask_surface);
+
+      cairo_stride = cairo_image_surface_get_stride (shell->mask_surface);
+      cairo_data   = cairo_image_surface_get_data (shell->mask_surface) +
+                     mask_src_y * cairo_stride + mask_src_x;
+
+      gegl_buffer_get (shell->mask,
+                       GEGL_RECTANGLE (x - floor (shell->mask_offset_x * scale),
+                                       y - floor (shell->mask_offset_y * scale),
+                                       w, h),
+                       scale,
+                       babl_format ("Y u8"),
+                       cairo_data, cairo_stride,
+                       GEGL_ABYSS_NONE);
+
+      if (shell->mask_inverted)
+        {
+          gint mask_height = h;
+
+          while (mask_height--)
+            {
+              gint    mask_width = w;
+              guchar *d          = cairo_data;
+
+              while (mask_width--)
+                {
+                  guchar inv = 255 - *d;
+
+                  *d++ = inv;
+                }
+
+              cairo_data += cairo_stride;
+            }
+        }
+    }
+
+  /*  put it to the screen  */
+  cairo_set_source_surface (cr, xfer,
+                            x - xfer_src_x,
+                            y - xfer_src_y);
+  cairo_paint (cr);
+
+  if (shell->mask)
+    {
+      gimp_cairo_set_source_rgba (cr, &shell->mask_color);
+      cairo_mask_surface (cr, shell->mask_surface,
+                          x - mask_src_x,
+                          y - mask_src_y);
+    }
+}