Adding upstream version 2.10.34.upstream/2.10.34upstream

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

1 files changed, 181 insertions, 0 deletions

diff --git a/app/display/gimpdisplayshell-rulers.c b/app/display/gimpdisplayshell-rulers.c
new file mode 100644
index 0000000..79253c8
--- /dev/null
+++ b/app/display/gimpdisplayshell-rulers.c
@@ -0,0 +1,181 @@
+/* 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 <math.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "display-types.h"
+
+#include "core/gimpimage.h"
+
+#include "gimpdisplay.h"
+#include "gimpdisplayshell.h"
+#include "gimpdisplayshell-rulers.h"
+#include "gimpdisplayshell-scale.h"
+
+
+/**
+ * gimp_display_shell_rulers_update:
+ * @shell:
+ *
+ **/
+void
+gimp_display_shell_rulers_update (GimpDisplayShell *shell)
+{
+  GimpImage *image;
+  gint       image_width;
+  gint       image_height;
+  gdouble    offset_x     = 0.0;
+  gdouble    offset_y     = 0.0;
+  gdouble    scale_x      = 1.0;
+  gdouble    scale_y      = 1.0;
+  gdouble    resolution_x = 1.0;
+  gdouble    resolution_y = 1.0;
+  gdouble    horizontal_lower;
+  gdouble    horizontal_upper;
+  gdouble    horizontal_max_size;
+  gdouble    vertical_lower;
+  gdouble    vertical_upper;
+  gdouble    vertical_max_size;
+
+  if (! shell->display)
+    return;
+
+  image = gimp_display_get_image (shell->display);
+
+  if (image)
+    {
+      gint    image_x, image_y;
+      gdouble res_x, res_y;
+
+      gimp_display_shell_scale_get_image_bounds (shell,
+                                                 &image_x, &image_y,
+                                                 &image_width, &image_height);
+
+      gimp_display_shell_get_rotated_scale (shell, &scale_x, &scale_y);
+
+      image_width  /= scale_x;
+      image_height /= scale_y;
+
+      offset_x = shell->offset_x - image_x;
+      offset_y = shell->offset_y - image_y;
+
+      gimp_image_get_resolution (image, &res_x, &res_y);
+
+      if (shell->rotate_angle == 0.0 || res_x == res_y)
+        {
+          resolution_x = res_x;
+          resolution_y = res_y;
+        }
+      else
+        {
+          gdouble cos_a = cos (G_PI * shell->rotate_angle / 180.0);
+          gdouble sin_a = sin (G_PI * shell->rotate_angle / 180.0);
+
+          if (shell->dot_for_dot)
+            {
+              resolution_x = 1.0 / sqrt (SQR (cos_a / res_x) +
+                                         SQR (sin_a / res_y));
+              resolution_y = 1.0 / sqrt (SQR (cos_a / res_y) +
+                                         SQR (sin_a / res_x));
+            }
+          else
+            {
+              resolution_x = sqrt (SQR (res_x * cos_a) + SQR (res_y * sin_a));
+              resolution_y = sqrt (SQR (res_y * cos_a) + SQR (res_x * sin_a));
+            }
+        }
+    }
+  else
+    {
+      image_width  = shell->disp_width;
+      image_height = shell->disp_height;
+    }
+
+  /* Initialize values */
+
+  horizontal_lower = 0;
+  vertical_lower   = 0;
+
+  if (image)
+    {
+      horizontal_upper    = gimp_pixels_to_units (shell->disp_width / scale_x,
+                                                  shell->unit,
+                                                  resolution_x);
+      horizontal_max_size = gimp_pixels_to_units (MAX (image_width,
+                                                       image_height),
+                                                  shell->unit,
+                                                  resolution_x);
+
+      vertical_upper      = gimp_pixels_to_units (shell->disp_height / scale_y,
+                                                  shell->unit,
+                                                  resolution_y);
+      vertical_max_size   = gimp_pixels_to_units (MAX (image_width,
+                                                       image_height),
+                                                  shell->unit,
+                                                  resolution_y);
+    }
+  else
+    {
+      horizontal_upper    = image_width;
+      horizontal_max_size = MAX (image_width, image_height);
+
+      vertical_upper      = image_height;
+      vertical_max_size   = MAX (image_width, image_height);
+    }
+
+
+  /* Adjust due to scrolling */
+
+  if (image)
+    {
+      offset_x *= horizontal_upper / shell->disp_width;
+      offset_y *= vertical_upper   / shell->disp_height;
+
+      horizontal_lower += offset_x;
+      horizontal_upper += offset_x;
+
+      vertical_lower   += offset_y;
+      vertical_upper   += offset_y;
+    }
+
+  /* Finally setup the actual rulers */
+
+  gimp_ruler_set_range (GIMP_RULER (shell->hrule),
+                        horizontal_lower,
+                        horizontal_upper,
+                        horizontal_max_size);
+
+  gimp_ruler_set_unit  (GIMP_RULER (shell->hrule),
+                        shell->unit);
+
+  gimp_ruler_set_range (GIMP_RULER (shell->vrule),
+                        vertical_lower,
+                        vertical_upper,
+                        vertical_max_size);
+
+  gimp_ruler_set_unit  (GIMP_RULER (shell->vrule),
+                        shell->unit);
+}