Adding upstream version 2.06.upstream/2.06upstream

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

1 files changed, 270 insertions, 0 deletions

diff --git a/grub-core/gfxmenu/gui_image.c b/grub-core/gfxmenu/gui_image.c
new file mode 100644
index 0000000..6b2e976
--- /dev/null
+++ b/grub-core/gfxmenu/gui_image.c
@@ -0,0 +1,270 @@
+/* gui_image.c - GUI component to display an image.  */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2008,2009  Free Software Foundation, Inc.
+ *
+ *  GRUB 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.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/gui.h>
+#include <grub/gui_string_util.h>
+#include <grub/bitmap.h>
+#include <grub/bitmap_scale.h>
+
+struct grub_gui_image
+{
+  struct grub_gui_component component;
+
+  grub_gui_container_t parent;
+  grub_video_rect_t bounds;
+  char *id;
+  char *theme_dir;
+  struct grub_video_bitmap *raw_bitmap;
+  struct grub_video_bitmap *bitmap;
+};
+
+typedef struct grub_gui_image *grub_gui_image_t;
+
+static void
+image_destroy (void *vself)
+{
+  grub_gui_image_t self = vself;
+
+  /* Free the scaled bitmap, unless it's a reference to the raw bitmap.  */
+  if (self->bitmap && (self->bitmap != self->raw_bitmap))
+    grub_video_bitmap_destroy (self->bitmap);
+  if (self->raw_bitmap)
+    grub_video_bitmap_destroy (self->raw_bitmap);
+
+  grub_free (self);
+}
+
+static const char *
+image_get_id (void *vself)
+{
+  grub_gui_image_t self = vself;
+  return self->id;
+}
+
+static int
+image_is_instance (void *vself __attribute__((unused)), const char *type)
+{
+  return grub_strcmp (type, "component") == 0;
+}
+
+static void
+image_paint (void *vself, const grub_video_rect_t *region)
+{
+  grub_gui_image_t self = vself;
+  grub_video_rect_t vpsave;
+
+  if (! self->bitmap)
+    return;
+  if (!grub_video_have_common_points (region, &self->bounds))
+    return;
+
+  grub_gui_set_viewport (&self->bounds, &vpsave);
+  grub_video_blit_bitmap (self->bitmap, GRUB_VIDEO_BLIT_BLEND,
+                          0, 0, 0, 0,
+                          grub_video_bitmap_get_width (self->bitmap),
+                          grub_video_bitmap_get_height (self->bitmap));
+  grub_gui_restore_viewport (&vpsave);
+}
+
+static void
+image_set_parent (void *vself, grub_gui_container_t parent)
+{
+  grub_gui_image_t self = vself;
+  self->parent = parent;
+}
+
+static grub_gui_container_t
+image_get_parent (void *vself)
+{
+  grub_gui_image_t self = vself;
+  return self->parent;
+}
+
+static grub_err_t
+rescale_image (grub_gui_image_t self)
+{
+  signed width;
+  signed height;
+
+  if (! self->raw_bitmap)
+    {
+      if (self->bitmap)
+        {
+          grub_video_bitmap_destroy (self->bitmap);
+          self->bitmap = 0;
+        }
+      return grub_errno;
+    }
+
+  width = self->bounds.width;
+  height = self->bounds.height;
+
+  if (self->bitmap
+      && ((signed) grub_video_bitmap_get_width (self->bitmap) == width)
+      && ((signed) grub_video_bitmap_get_height (self->bitmap) == height))
+    {
+      /* Nothing to do; already the right size.  */
+      return grub_errno;
+    }
+
+  /* Free any old scaled bitmap,
+     *unless* it's a reference to the raw bitmap.  */
+  if (self->bitmap && (self->bitmap != self->raw_bitmap))
+    grub_video_bitmap_destroy (self->bitmap);
+
+  self->bitmap = 0;
+
+  /* Create a scaled bitmap, unless the requested size is the same
+     as the raw size -- in that case a reference is made.  */
+  if ((signed) grub_video_bitmap_get_width (self->raw_bitmap) == width
+      && (signed) grub_video_bitmap_get_height (self->raw_bitmap) == height)
+    {
+      self->bitmap = self->raw_bitmap;
+      return grub_errno;
+    }
+
+  /* Don't scale to an invalid size.  */
+  if (width <= 0 || height <= 0)
+    return grub_errno;
+
+  /* Create the scaled bitmap.  */
+  grub_video_bitmap_create_scaled (&self->bitmap,
+                                   width,
+                                   height,
+                                   self->raw_bitmap,
+                                   GRUB_VIDEO_BITMAP_SCALE_METHOD_BEST);
+  return grub_errno;
+}
+
+static void
+image_set_bounds (void *vself, const grub_video_rect_t *bounds)
+{
+  grub_gui_image_t self = vself;
+  self->bounds = *bounds;
+  rescale_image (self);
+}
+
+static void
+image_get_bounds (void *vself, grub_video_rect_t *bounds)
+{
+  grub_gui_image_t self = vself;
+  *bounds = self->bounds;
+}
+
+/* FIXME: inform rendering system it's not forced minimum.  */
+static void
+image_get_minimal_size (void *vself, unsigned *width, unsigned *height)
+{
+  grub_gui_image_t self = vself;
+
+  if (self->raw_bitmap)
+    {
+      *width = grub_video_bitmap_get_width (self->raw_bitmap);
+      *height = grub_video_bitmap_get_height (self->raw_bitmap);
+    }
+  else
+    {
+      *width = 0;
+      *height = 0;
+    }
+}
+
+static grub_err_t
+load_image (grub_gui_image_t self, const char *path)
+{
+  struct grub_video_bitmap *bitmap;
+  if (grub_video_bitmap_load (&bitmap, path) != GRUB_ERR_NONE)
+    return grub_errno;
+
+  if (self->bitmap && (self->bitmap != self->raw_bitmap))
+    {
+      grub_video_bitmap_destroy (self->bitmap);
+      self->bitmap = 0;
+    }
+  if (self->raw_bitmap)
+    grub_video_bitmap_destroy (self->raw_bitmap);
+
+  self->raw_bitmap = bitmap;
+  return rescale_image (self);
+}
+
+static grub_err_t
+image_set_property (void *vself, const char *name, const char *value)
+{
+  grub_gui_image_t self = vself;
+  if (grub_strcmp (name, "theme_dir") == 0)
+    {
+      grub_free (self->theme_dir);
+      self->theme_dir = grub_strdup (value);
+    }
+  else if (grub_strcmp (name, "file") == 0)
+    {
+      char *absvalue;
+      grub_err_t err;
+
+      /* Resolve to an absolute path.  */
+      if (! self->theme_dir)
+	return grub_error (GRUB_ERR_BUG, "unspecified theme_dir");
+      absvalue = grub_resolve_relative_path (self->theme_dir, value);
+      if (! absvalue)
+	return grub_errno;
+
+      err = load_image (self, absvalue);
+      grub_free (absvalue);
+
+      return err;
+    }
+  else if (grub_strcmp (name, "id") == 0)
+    {
+      grub_free (self->id);
+      if (value)
+        self->id = grub_strdup (value);
+      else
+        self->id = 0;
+    }
+  return grub_errno;
+}
+
+static struct grub_gui_component_ops image_ops =
+{
+  .destroy = image_destroy,
+  .get_id = image_get_id,
+  .is_instance = image_is_instance,
+  .paint = image_paint,
+  .set_parent = image_set_parent,
+  .get_parent = image_get_parent,
+  .set_bounds = image_set_bounds,
+  .get_bounds = image_get_bounds,
+  .get_minimal_size = image_get_minimal_size,
+  .set_property = image_set_property
+};
+
+grub_gui_component_t
+grub_gui_image_new (void)
+{
+  grub_gui_image_t image;
+  image = grub_zalloc (sizeof (*image));
+  if (! image)
+    return 0;
+  image->component.ops = &image_ops;
+  return (grub_gui_component_t) image;
+}
+