[gnome-builder] libide: add internal class IdeLineChangeGutterRenderer

[Christian Hergert <chergert src gnome org>]

commit 8defd11fb288954efaaf90f5ce900ef99c8a7b54
Author: Christian Hergert <christian hergert me>
Date:   Tue Feb 24 14:28:50 2015 -0800

    libide: add internal class IdeLineChangeGutterRenderer
    
    This is used to implement the "show-line-changes" property on
    IdeSourceView.

 libide/Makefile.am                       |    2 +
 libide/ide-line-change-gutter-renderer.c |  102 ++++++++++++++++++++++++++++++
 libide/ide-line-change-gutter-renderer.h |   41 ++++++++++++
 3 files changed, 145 insertions(+), 0 deletions(-)
---
diff --git a/libide/Makefile.am b/libide/Makefile.am
index 7a93306..060ebd0 100644
--- a/libide/Makefile.am
+++ b/libide/Makefile.am
@@ -183,6 +183,8 @@ libide_1_0_la_SOURCES = \
        libide/ide-async-helper.c \
        libide/ide-async-helper.h \
        libide/ide-internal.h \
+       libide/ide-line-change-gutter-renderer.c \
+       libide/ide-line-change-gutter-renderer.h \
        libide/ide-search-reducer.c \
        libide/ide-search-reducer.h \
        libide/tasks/ide-load-directory-task.c \
diff --git a/libide/ide-line-change-gutter-renderer.c b/libide/ide-line-change-gutter-renderer.c
new file mode 100644
index 0000000..5feb600
--- /dev/null
+++ b/libide/ide-line-change-gutter-renderer.c
@@ -0,0 +1,102 @@
+/* ide-line-change-gutter-renderer.c
+ *
+ * Copyright (C) 2015 Christian Hergert <christian hergert me>
+ *
+ * This file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This file 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
+ * Lesser 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 "ide-buffer.h"
+#include "ide-context.h"
+#include "ide-file.h"
+#include "ide-line-change-gutter-renderer.h"
+#include "ide-vcs.h"
+
+struct _IdeLineChangeGutterRenderer
+{
+  GtkSourceGutterRenderer parent_instance;
+};
+
+struct _IdeLineChangeGutterRendererClass
+{
+  GtkSourceGutterRendererClass parent;
+};
+
+G_DEFINE_TYPE (IdeLineChangeGutterRenderer,
+               ide_line_change_gutter_renderer,
+               GTK_SOURCE_TYPE_GUTTER_RENDERER)
+
+static GdkRGBA gRgbaAdded;
+static GdkRGBA gRgbaChanged;
+
+static void
+ide_line_change_gutter_renderer_draw (GtkSourceGutterRenderer      *renderer,
+                                      cairo_t                      *cr,
+                                      GdkRectangle                 *bg_area,
+                                      GdkRectangle                 *cell_area,
+                                      GtkTextIter                  *begin,
+                                      GtkTextIter                  *end,
+                                      GtkSourceGutterRendererState  state)
+{
+  GtkTextBuffer *buffer;
+  GdkRGBA *rgba = NULL;
+  IdeBufferLineFlags flags;
+  guint lineno;
+
+  g_return_if_fail (IDE_IS_LINE_CHANGE_GUTTER_RENDERER (renderer));
+  g_return_if_fail (cr);
+  g_return_if_fail (bg_area);
+  g_return_if_fail (cell_area);
+  g_return_if_fail (begin);
+  g_return_if_fail (end);
+
+  GTK_SOURCE_GUTTER_RENDERER_CLASS (ide_line_change_gutter_renderer_parent_class)->
+    draw (renderer, cr, bg_area, cell_area, begin, end, state);
+
+  buffer = gtk_text_iter_get_buffer (begin);
+
+  if (!IDE_IS_BUFFER (buffer))
+    return;
+
+  lineno = gtk_text_iter_get_line (begin);
+  flags = ide_buffer_get_line_flags (IDE_BUFFER (buffer), lineno);
+
+  if ((flags & IDE_BUFFER_LINE_FLAGS_ADDED) != 0)
+    rgba = &gRgbaAdded;
+
+  if ((flags & IDE_BUFFER_LINE_FLAGS_CHANGED) != 0)
+    rgba = &gRgbaChanged;
+
+  if (rgba)
+    {
+      gdk_cairo_rectangle (cr, cell_area);
+      gdk_cairo_set_source_rgba (cr, rgba);
+      cairo_fill (cr);
+    }
+}
+
+static void
+ide_line_change_gutter_renderer_class_init (IdeLineChangeGutterRendererClass *klass)
+{
+  GtkSourceGutterRendererClass *renderer_class = GTK_SOURCE_GUTTER_RENDERER_CLASS (klass);
+
+  renderer_class->draw = ide_line_change_gutter_renderer_draw;
+
+  gdk_rgba_parse (&gRgbaAdded, "#8ae234");
+  gdk_rgba_parse (&gRgbaChanged, "#fcaf3e");
+}
+
+static void
+ide_line_change_gutter_renderer_init (IdeLineChangeGutterRenderer *self)
+{
+}
diff --git a/libide/ide-line-change-gutter-renderer.h b/libide/ide-line-change-gutter-renderer.h
new file mode 100644
index 0000000..cdea3f4
--- /dev/null
+++ b/libide/ide-line-change-gutter-renderer.h
@@ -0,0 +1,41 @@
+/* ide-line-change-gutter-renderer.h
+ *
+ * Copyright (C) 2015 Christian Hergert <christian hergert me>
+ *
+ * This file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This file 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
+ * Lesser 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/>.
+ */
+
+#ifndef IDE_LINE_CHANGE_GUTTER_RENDERER_H
+#define IDE_LINE_CHANGE_GUTTER_RENDERER_H
+
+#include <gtksourceview/gtksource.h>
+
+G_BEGIN_DECLS
+
+#define IDE_TYPE_LINE_CHANGE_GUTTER_RENDERER            (ide_line_change_gutter_renderer_get_type())
+#define IDE_LINE_CHANGE_GUTTER_RENDERER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), 
IDE_TYPE_LINE_CHANGE_GUTTER_RENDERER, IdeLineChangeGutterRenderer))
+#define IDE_LINE_CHANGE_GUTTER_RENDERER_CONST(obj)      (G_TYPE_CHECK_INSTANCE_CAST ((obj), 
IDE_TYPE_LINE_CHANGE_GUTTER_RENDERER, IdeLineChangeGutterRenderer const))
+#define IDE_LINE_CHANGE_GUTTER_RENDERER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  
IDE_TYPE_LINE_CHANGE_GUTTER_RENDERER, IdeLineChangeGutterRendererClass))
+#define IDE_IS_LINE_CHANGE_GUTTER_RENDERER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), 
IDE_TYPE_LINE_CHANGE_GUTTER_RENDERER))
+#define IDE_IS_LINE_CHANGE_GUTTER_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  
IDE_TYPE_LINE_CHANGE_GUTTER_RENDERER))
+#define IDE_LINE_CHANGE_GUTTER_RENDERER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  
IDE_TYPE_LINE_CHANGE_GUTTER_RENDERER, IdeLineChangeGutterRendererClass))
+
+typedef struct _IdeLineChangeGutterRenderer      IdeLineChangeGutterRenderer;
+typedef struct _IdeLineChangeGutterRendererClass IdeLineChangeGutterRendererClass;
+
+GType ide_line_change_gutter_renderer_get_type (void);
+
+G_END_DECLS
+
+#endif /* IDE_LINE_CHANGE_GUTTER_RENDERER_H */