Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 369 insertions, 0 deletions

diff --git a/app/widgets/gimphighlightablebutton.c b/app/widgets/gimphighlightablebutton.c
new file mode 100644
index 0000000..41c5a44
--- /dev/null
+++ b/app/widgets/gimphighlightablebutton.c
@@ -0,0 +1,369 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimphighlightablebutton.c
+ * Copyright (C) 2018 Ell
+ *
+ * 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 <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimp-cairo.h"
+
+#include "gimphighlightablebutton.h"
+
+
+#define DEFAULT_HIGHLIGHT_COLOR {0.20, 0.70, 0.20, 0.65}
+
+#define PADDING       1
+#define BORDER_WIDTH  1
+#define CORNER_RADIUS 2
+
+#define REV (2.0 * G_PI)
+
+
+enum
+{
+  PROP_0,
+  PROP_HIGHLIGHT,
+  PROP_HIGHLIGHT_COLOR
+};
+
+
+struct _GimpHighlightableButtonPrivate
+{
+  gboolean highlight;
+  GimpRGB  highlight_color;
+};
+
+
+static void       gimp_highlightable_button_set_property (GObject        *object,
+                                                          guint           property_id,
+                                                          const GValue   *value,
+                                                          GParamSpec     *pspec);
+static void       gimp_highlightable_button_get_property (GObject        *object,
+                                                          guint           property_id,
+                                                          GValue         *value,
+                                                          GParamSpec     *pspec);
+
+static gboolean   gimp_highlightable_button_expose_event (GtkWidget      *widget,
+                                                          GdkEventExpose *event);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpHighlightableButton, gimp_highlightable_button,
+                            GIMP_TYPE_BUTTON)
+
+#define parent_class gimp_highlightable_button_parent_class
+
+
+static void
+gimp_highlightable_button_class_init (GimpHighlightableButtonClass *klass)
+{
+  GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->get_property = gimp_highlightable_button_get_property;
+  object_class->set_property = gimp_highlightable_button_set_property;
+
+  widget_class->expose_event = gimp_highlightable_button_expose_event;
+
+  g_object_class_install_property (object_class, PROP_HIGHLIGHT,
+                                   g_param_spec_boolean ("highlight",
+                                                         NULL, NULL,
+                                                         FALSE,
+                                                         GIMP_PARAM_READWRITE |
+                                                         G_PARAM_CONSTRUCT));
+
+  g_object_class_install_property (object_class, PROP_HIGHLIGHT_COLOR,
+                                   gimp_param_spec_rgb ("highlight-color",
+                                                        NULL, NULL,
+                                                        TRUE,
+                                                        &(GimpRGB) DEFAULT_HIGHLIGHT_COLOR,
+                                                        GIMP_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+}
+
+static void
+gimp_highlightable_button_init (GimpHighlightableButton *button)
+{
+  button->priv = gimp_highlightable_button_get_instance_private (button);
+}
+
+static void
+gimp_highlightable_button_set_property (GObject      *object,
+                                        guint         property_id,
+                                        const GValue *value,
+                                        GParamSpec   *pspec)
+{
+  GimpHighlightableButton *button = GIMP_HIGHLIGHTABLE_BUTTON (object);
+
+  switch (property_id)
+    {
+    case PROP_HIGHLIGHT:
+      gimp_highlightable_button_set_highlight (button,
+                                               g_value_get_boolean (value));
+      break;
+
+    case PROP_HIGHLIGHT_COLOR:
+      gimp_highlightable_button_set_highlight_color (button,
+                                                     g_value_get_boxed (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_highlightable_button_get_property (GObject    *object,
+                                        guint       property_id,
+                                        GValue     *value,
+                                        GParamSpec *pspec)
+{
+  GimpHighlightableButton *button = GIMP_HIGHLIGHTABLE_BUTTON (object);
+
+  switch (property_id)
+    {
+    case PROP_HIGHLIGHT:
+      g_value_set_boolean (value, button->priv->highlight);
+      break;
+
+    case PROP_HIGHLIGHT_COLOR:
+      g_value_set_boxed (value, &button->priv->highlight_color);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static gboolean
+gimp_highlightable_button_expose_event (GtkWidget      *widget,
+                                        GdkEventExpose *event)
+{
+  GimpHighlightableButton *button = GIMP_HIGHLIGHTABLE_BUTTON (widget);
+
+  if (button->priv->highlight)
+    {
+      if (gtk_widget_is_drawable (widget))
+        {
+          GtkStyle      *style = gtk_widget_get_style (widget);
+          GtkStateType   state = gtk_widget_get_state (widget);
+          GtkAllocation  allocation;
+          gboolean       border;
+          gdouble        lightness;
+          gdouble        opacity;
+          gdouble        x;
+          gdouble        y;
+          gdouble        width;
+          gdouble        height;
+          cairo_t       *cr;
+
+          gtk_widget_get_allocation (widget, &allocation);
+
+          border =
+            (state                                       == GTK_STATE_ACTIVE   ||
+             state                                       == GTK_STATE_PRELIGHT ||
+             gtk_button_get_relief (GTK_BUTTON (button)) == GTK_RELIEF_NORMAL);
+
+          lightness = 1.00;
+          opacity   = 1.00;
+
+          switch (state)
+            {
+            case GTK_STATE_ACTIVE:      lightness = 0.80; break;
+            case GTK_STATE_PRELIGHT:    lightness = 1.25; break;
+            case GTK_STATE_INSENSITIVE: opacity   = 0.50; break;
+            default:                                      break;
+            }
+
+          x      = allocation.x      +       PADDING;
+          y      = allocation.y      +       PADDING;
+          width  = allocation.width  - 2.0 * PADDING;
+          height = allocation.height - 2.0 * PADDING;
+
+          if (border)
+            {
+              x      += BORDER_WIDTH / 2.0;
+              y      += BORDER_WIDTH / 2.0;
+              width  -= BORDER_WIDTH;
+              height -= BORDER_WIDTH;
+            }
+
+          cr = gdk_cairo_create (event->window);
+          gdk_cairo_region (cr, event->region);
+          cairo_clip (cr);
+
+          cairo_set_source_rgba (cr,
+                                 button->priv->highlight_color.r * lightness,
+                                 button->priv->highlight_color.g * lightness,
+                                 button->priv->highlight_color.b * lightness,
+                                 button->priv->highlight_color.a * opacity);
+
+          gimp_cairo_rounded_rectangle (cr,
+                                        x, y, width, height, CORNER_RADIUS);
+
+          cairo_fill_preserve (cr);
+
+          if (border)
+            {
+              gdk_cairo_set_source_color (cr, &style->fg[state]);
+
+              cairo_set_line_width (cr, BORDER_WIDTH);
+
+              cairo_stroke (cr);
+            }
+
+          cairo_destroy (cr);
+
+          if (gtk_widget_has_focus (widget))
+            {
+              gboolean interior_focus;
+              gint     focus_width;
+              gint     focus_pad;
+              gint     child_displacement_x;
+              gint     child_displacement_y;
+              gboolean displace_focus;
+              gint     x;
+              gint     y;
+              gint     width;
+              gint     height;
+
+              gtk_widget_style_get (widget,
+                                    "interior-focus",       &interior_focus,
+                                    "focus-line-width",     &focus_width,
+                                    "focus-padding",        &focus_pad,
+                                    "child-displacement-y", &child_displacement_y,
+                                    "child-displacement-x", &child_displacement_x,
+                                    "displace-focus",       &displace_focus,
+                                    NULL);
+
+              x      = allocation.x      +     PADDING;
+              y      = allocation.y      +     PADDING;
+              width  = allocation.width  - 2 * PADDING;
+              height = allocation.height - 2 * PADDING;
+
+              if (interior_focus)
+                {
+                  x      += style->xthickness + focus_pad;
+                  y      += style->ythickness + focus_pad;
+                  width  -= 2 * (style->xthickness + focus_pad);
+                  height -= 2 * (style->ythickness + focus_pad);
+                }
+              else
+                {
+                  x      -= focus_width + focus_pad;
+                  y      -= focus_width + focus_pad;
+                  width  += 2 * (focus_width + focus_pad);
+                  height += 2 * (focus_width + focus_pad);
+                }
+
+              if (state == GTK_STATE_ACTIVE && displace_focus)
+                {
+                  x += child_displacement_x;
+                  y += child_displacement_y;
+                }
+
+              gtk_paint_focus (style, gtk_widget_get_window (widget), state,
+                               &event->area, widget, "button",
+                               x, y, width, height);
+            }
+
+          gtk_container_propagate_expose (GTK_CONTAINER (button),
+                                          gtk_bin_get_child (GTK_BIN (button)),
+                                          event);
+        }
+
+      return FALSE;
+    }
+  else
+    {
+      return GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
+    }
+}
+
+
+/*  public functions  */
+
+
+GtkWidget *
+gimp_highlightable_button_new (void)
+{
+  return g_object_new (GIMP_TYPE_HIGHLIGHTABLE_BUTTON, NULL);
+}
+
+void
+gimp_highlightable_button_set_highlight (GimpHighlightableButton *button,
+                                         gboolean                 highlight)
+{
+  g_return_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button));
+
+  if (button->priv->highlight != highlight)
+    {
+      button->priv->highlight = highlight;
+
+      gtk_widget_queue_draw (GTK_WIDGET (button));
+
+      g_object_notify (G_OBJECT (button), "highlight");
+    }
+}
+
+gboolean
+gimp_highlightable_button_get_highlight (GimpHighlightableButton *button)
+{
+  g_return_val_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button), FALSE);
+
+  return button->priv->highlight;
+}
+
+void
+gimp_highlightable_button_set_highlight_color (GimpHighlightableButton *button,
+                                               const GimpRGB           *color)
+{
+  g_return_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button));
+  g_return_if_fail (color != NULL);
+
+  if (memcmp (&button->priv->highlight_color, color, sizeof (GimpRGB)))
+    {
+      button->priv->highlight_color = *color;
+
+      if (button->priv->highlight)
+        gtk_widget_queue_draw (GTK_WIDGET (button));
+
+      g_object_notify (G_OBJECT (button), "highlight-color");
+    }
+}
+
+void
+gimp_highlightable_button_get_highlight_color (GimpHighlightableButton *button,
+                                               GimpRGB                 *color)
+{
+  g_return_if_fail (GIMP_IS_HIGHLIGHTABLE_BUTTON (button));
+  g_return_if_fail (color != NULL);
+
+  *color = button->priv->highlight_color;
+}