Use a toolpalette that demands enough space

GtkToolPalette will not request a minimum amount of space by default.
Steal some code from the GIMP to always ensure we have enough space for
the tools.

1 files changed, 121 insertions, 0 deletions

diff --git a/tikzit/src/gtk/tztoolpalette.m b/tikzit/src/gtk/tztoolpalette.m
new file mode 100644
index 0000000..1a6ab9a
--- /dev/null
+++ b/tikzit/src/gtk/tztoolpalette.m
@@ -0,0 +1,121 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * tztoolpalette.c, based on gimptoolpalette.c
+ * Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
+ * Copyright (C) 2012 Alex Merry <alex.merry@kdemail.net>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <gtk/gtk.h>
+
+#include "tztoolpalette.h"
+
+
+#define DEFAULT_TOOL_ICON_SIZE GTK_ICON_SIZE_BUTTON
+#define DEFAULT_BUTTON_RELIEF  GTK_RELIEF_NONE
+
+#define TOOL_BUTTON_DATA_KEY   "tz-tool-palette-item"
+#define TOOL_INFO_DATA_KEY     "tz-tool-info"
+
+
+typedef struct _TzToolPalettePrivate TzToolPalettePrivate;
+
+struct _TzToolPalettePrivate
+{
+  gint         tool_rows;
+  gint         tool_columns;
+};
+
+#define GET_PRIVATE(p) G_TYPE_INSTANCE_GET_PRIVATE (p, \
+                                                    TZ_TYPE_TOOL_PALETTE, \
+                                                    TzToolPalettePrivate)
+
+
+static void     tz_tool_palette_size_allocate       (GtkWidget       *widget,
+                                                       GtkAllocation   *allocation);
+
+
+G_DEFINE_TYPE (TzToolPalette, tz_tool_palette, GTK_TYPE_TOOL_PALETTE)
+
+#define parent_class tz_tool_palette_parent_class
+
+
+static void
+tz_tool_palette_class_init (TzToolPaletteClass *klass)
+{
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  widget_class->size_allocate         = tz_tool_palette_size_allocate;
+
+  g_type_class_add_private (klass, sizeof (TzToolPalettePrivate));
+}
+
+static void
+tz_tool_palette_init (TzToolPalette *palette)
+{
+}
+
+static void
+tz_tool_palette_size_allocate (GtkWidget     *widget,
+                               GtkAllocation *allocation)
+{
+  TzToolPalettePrivate *private = GET_PRIVATE (widget);
+  GList                *children;
+  GtkToolItemGroup     *group;
+
+  GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
+
+  children = gtk_container_get_children (GTK_CONTAINER (widget));
+  g_return_if_fail (children);
+  group = GTK_TOOL_ITEM_GROUP (children->data);
+  g_list_free (children);
+
+  guint tool_count = gtk_tool_item_group_get_n_items (group);
+  if (tool_count > 0)
+    {
+      GtkWidget      *tool_button;
+      GtkRequisition  button_requisition;
+      gint            tool_rows;
+      gint            tool_columns;
+
+      tool_button = GTK_WIDGET (gtk_tool_item_group_get_nth_item (group, 0));
+      gtk_widget_size_request (tool_button, &button_requisition);
+
+      tool_columns = MAX (1, (allocation->width / button_requisition.width));
+      tool_rows    = tool_count / tool_columns;
+
+      if (tool_count % tool_columns)
+        tool_rows++;
+
+      if (private->tool_rows    != tool_rows  ||
+          private->tool_columns != tool_columns)
+        {
+          private->tool_rows    = tool_rows;
+          private->tool_columns = tool_columns;
+
+          gtk_widget_set_size_request (widget, -1,
+                                       tool_rows * button_requisition.height);
+        }
+    }
+}
+
+GtkWidget *
+tz_tool_palette_new (void)
+{
+  return g_object_new (TZ_TYPE_TOOL_PALETTE, NULL);
+}
+
+// vim:ft=objc:ts=8:et:sts=2:sw=2:foldmethod=marker