Adding upstream version 2.10.22.upstream/2.10.22upstream

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

1 files changed, 202 insertions, 0 deletions

diff --git a/app/widgets/gimpscalebutton.c b/app/widgets/gimpscalebutton.c
new file mode 100644
index 0000000..7735316
--- /dev/null
+++ b/app/widgets/gimpscalebutton.c
@@ -0,0 +1,202 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpscalebutton.c
+ * Copyright (C) 2008 Sven Neumann <sven@gimp.org>
+ *
+ * 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 <gtk/gtk.h>
+
+#include "widgets-types.h"
+
+#include "gimpscalebutton.h"
+
+
+static void      gimp_scale_button_value_changed  (GtkScaleButton  *button,
+                                                   gdouble          value);
+static void      gimp_scale_button_update_tooltip (GimpScaleButton *button);
+static gboolean  gimp_scale_button_image_expose   (GtkWidget       *widget,
+                                                   GdkEventExpose  *event,
+                                                   GimpScaleButton *button);
+
+
+G_DEFINE_TYPE (GimpScaleButton, gimp_scale_button, GTK_TYPE_SCALE_BUTTON)
+
+#define parent_class gimp_scale_button_parent_class
+
+
+static void
+gimp_scale_button_class_init (GimpScaleButtonClass *klass)
+{
+  GtkScaleButtonClass *button_class = GTK_SCALE_BUTTON_CLASS (klass);
+
+  button_class->value_changed = gimp_scale_button_value_changed;
+}
+
+static void
+gimp_scale_button_init (GimpScaleButton *button)
+{
+  GtkWidget *image = gtk_bin_get_child (GTK_BIN (button));
+  GtkWidget *plusminus;
+
+  plusminus = gtk_scale_button_get_plus_button (GTK_SCALE_BUTTON (button));
+  gtk_widget_hide (plusminus);
+  gtk_widget_set_no_show_all (plusminus, TRUE);
+
+  plusminus = gtk_scale_button_get_minus_button (GTK_SCALE_BUTTON (button));
+  gtk_widget_hide (plusminus);
+  gtk_widget_set_no_show_all (plusminus, TRUE);
+
+  g_signal_connect (image, "expose-event",
+                    G_CALLBACK (gimp_scale_button_image_expose),
+                    button);
+
+  /* GtkScaleButton doesn't emit "value-changed" when the adjustment changes */
+  g_signal_connect (button, "notify::adjustment",
+                    G_CALLBACK (gimp_scale_button_update_tooltip),
+                    NULL);
+
+  gimp_scale_button_update_tooltip (button);
+}
+
+static void
+gimp_scale_button_value_changed (GtkScaleButton *button,
+                                 gdouble         value)
+{
+  if (GTK_SCALE_BUTTON_CLASS (parent_class)->value_changed)
+    GTK_SCALE_BUTTON_CLASS (parent_class)->value_changed (button, value);
+
+  gimp_scale_button_update_tooltip (GIMP_SCALE_BUTTON (button));
+}
+
+static void
+gimp_scale_button_update_tooltip (GimpScaleButton *button)
+{
+  GtkAdjustment *adj;
+  gchar         *text;
+  gdouble        value;
+  gdouble        lower;
+  gdouble        upper;
+
+  adj = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (button));
+
+  value = gtk_adjustment_get_value (adj);
+  lower = gtk_adjustment_get_lower (adj);
+  upper = gtk_adjustment_get_upper (adj);
+
+  /*  use U+2009 THIN SPACE to separate the percent sign from the number */
+
+  text = g_strdup_printf ("%d\342\200\211%%",
+                          (gint) (0.5 + ((value - lower) * 100.0 /
+                                         (upper - lower))));
+
+  gtk_widget_set_tooltip_text (GTK_WIDGET (button), text);
+  g_free (text);
+}
+
+static gboolean
+gimp_scale_button_image_expose (GtkWidget       *widget,
+                                GdkEventExpose  *event,
+                                GimpScaleButton *button)
+{
+  GtkStyle      *style = gtk_widget_get_style (widget);
+  GtkAllocation  allocation;
+  GtkAdjustment *adj;
+  cairo_t       *cr;
+  gint           value;
+  gint           steps;
+  gint           i;
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  steps = MIN (allocation.width, allocation.height) / 2;
+
+  adj = gtk_scale_button_get_adjustment (GTK_SCALE_BUTTON (button));
+
+  if (steps < 1)
+    return TRUE;
+
+  value = 0.5 + ((gtk_adjustment_get_value (adj) -
+                  gtk_adjustment_get_lower (adj)) * (gdouble) steps /
+                 (gtk_adjustment_get_upper (adj) -
+                  gtk_adjustment_get_lower (adj)));
+
+  cr = gdk_cairo_create (gtk_widget_get_window (widget));
+
+  gdk_cairo_rectangle (cr, &event->area);
+  cairo_clip (cr);
+
+  cairo_set_line_width (cr, 0.5);
+
+  if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
+    {
+      cairo_translate (cr,
+                       allocation.x + allocation.width - 0.5,
+                       allocation.y + allocation.height);
+      cairo_scale (cr, -2.0, -2.0);
+    }
+  else
+    {
+      cairo_translate (cr,
+                       allocation.x + 0.5,
+                       allocation.y + allocation.height);
+      cairo_scale (cr, 2.0, -2.0);
+    }
+
+  for (i = 0; i < value; i++)
+    {
+      cairo_move_to (cr, i, 0);
+      cairo_line_to (cr, i, i + 0.5);
+    }
+
+  gdk_cairo_set_source_color (cr, &style->fg[gtk_widget_get_state (widget)]);
+  cairo_stroke (cr);
+
+  for ( ; i < steps; i++)
+    {
+      cairo_move_to (cr, i, 0);
+      cairo_line_to (cr, i, i + 0.5);
+    }
+
+  gdk_cairo_set_source_color (cr, &style->fg[GTK_STATE_INSENSITIVE]);
+  cairo_stroke (cr);
+
+  cairo_destroy (cr);
+
+  return TRUE;
+}
+
+GtkWidget *
+gimp_scale_button_new (gdouble value,
+                       gdouble min,
+                       gdouble max)
+{
+  GtkObject *adj;
+  gdouble    step;
+
+  g_return_val_if_fail (value >= min && value <= max, NULL);
+
+  step = (max - min) / 10.0;
+  adj  = gtk_adjustment_new (value, min, max, step, step, 0);
+
+  return g_object_new (GIMP_TYPE_SCALE_BUTTON,
+                       "orientation", GTK_ORIENTATION_HORIZONTAL,
+                       "adjustment",  adj,
+                       "size",        GTK_ICON_SIZE_MENU,
+                       NULL);
+}