gdm r5925 - in trunk: . gui/simple-greeter

[halfline svn gnome org]

Author: halfline
Date: Wed Mar  5 04:50:29 2008
New Revision: 5925
URL: http://svn.gnome.org/viewvc/gdm?rev=5925&view=rev

Log:
2008-03-04  Ray Strode <rstrode redhat com>

	* gui/simple-greeter/gdm-cell-renderer-timer.[ch]:
	New cell renderer that does clock count-down animation
	(will be improved to be themable later)


Added:
   trunk/gui/simple-greeter/gdm-cell-renderer-timer.c
   trunk/gui/simple-greeter/gdm-cell-renderer-timer.h
Modified:
   trunk/ChangeLog

Added: trunk/gui/simple-greeter/gdm-cell-renderer-timer.c
==============================================================================
--- (empty file)
+++ trunk/gui/simple-greeter/gdm-cell-renderer-timer.c	Wed Mar  5 04:50:29 2008
@@ -0,0 +1,233 @@
+/*
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *  Written by: Ray Strode <rstrode redhat com>
+ */
+
+#include "config.h"
+#include "gdm-cell-renderer-timer.h"
+#include <glib/gi18n.h>
+
+#define GDM_CELL_RENDERER_TIMER_GET_PRIVATE(object) (G_TYPE_INSTANCE_GET_PRIVATE ((object), GDM_TYPE_CELL_RENDERER_TIMER, GdmCellRendererTimerPrivate))
+
+struct _GdmCellRendererTimerPrivate
+{
+        gdouble    value;
+};
+
+enum
+{
+        PROP_0,
+        PROP_VALUE,
+};
+
+G_DEFINE_TYPE (GdmCellRendererTimer, gdm_cell_renderer_timer, GTK_TYPE_CELL_RENDERER)
+
+static void
+gdm_cell_renderer_timer_get_property (GObject *object,
+                                      guint param_id,
+                                      GValue *value,
+                                      GParamSpec *pspec)
+{
+        GdmCellRendererTimer *renderer;
+
+        renderer = GDM_CELL_RENDERER_TIMER (object);
+
+        switch (param_id) {
+                case PROP_VALUE:
+                        g_value_set_double (value, renderer->priv->value);
+                        break;
+                default:
+                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+        }
+}
+
+static void
+gdm_cell_renderer_timer_set_value (GdmCellRendererTimer *renderer,
+                                   gdouble               value)
+{
+        renderer->priv->value = value;
+}
+
+static void
+gdm_cell_renderer_timer_set_property (GObject *object,
+                                      guint param_id,
+                                      const GValue *value,
+                                      GParamSpec   *pspec)
+{
+        GdmCellRendererTimer *renderer;
+
+        renderer = GDM_CELL_RENDERER_TIMER (object);
+
+        switch (param_id) {
+                case PROP_VALUE:
+                        gdm_cell_renderer_timer_set_value (renderer,
+                                                           g_value_get_double (value));
+                        break;
+                default:
+                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+    }
+}
+
+static void
+gdm_cell_renderer_timer_get_size (GtkCellRenderer *cell,
+                                  GtkWidget       *widget,
+                                  GdkRectangle    *cell_area,
+                                  gint            *x_offset,
+                                  gint            *y_offset,
+                                  gint            *width,
+                                  gint            *height)
+{
+
+        GdmCellRendererTimer *renderer;
+
+        renderer = GDM_CELL_RENDERER_TIMER (cell);
+
+        if (cell_area != NULL) {
+                if (x_offset != NULL) {
+                        *x_offset = 0;
+                }
+
+                if (y_offset != NULL) {
+                        *y_offset = 0;
+                }
+        }
+
+        if (width != NULL) {
+                if (cell->width >= 0) {
+                        *width = cell->width;
+                } else {
+                        *width = renderer->priv->value <= G_MINDOUBLE?  0 : 64;
+                }
+        }
+
+        if (height != NULL) {
+                if (cell->height >= 0) {
+                        *height = cell->height;
+                } else {
+                        *width = renderer->priv->value <= G_MINDOUBLE?  0 : 64;
+                }
+        }
+}
+
+static void
+draw_timer (GdmCellRendererTimer *renderer,
+            cairo_t              *context,
+            GdkColor             *fg,
+            GdkColor             *bg,
+            int                   width,
+            int                   height)
+{
+        double radius;
+
+        radius = .5 * (MIN (width, height) / 2.0);
+
+        cairo_translate (context, width / 2., height / 2.);
+
+        gdk_cairo_set_source_color (context, bg);
+        cairo_move_to (context, 0, 0);
+        cairo_arc (context, 0, 0, radius, 0, 2 * G_PI);
+        cairo_fill_preserve (context);
+        cairo_stroke (context);
+
+        gdk_cairo_set_source_color (context, fg);
+        cairo_move_to (context, 0, 0);
+        cairo_arc (context, 0, 0, radius, - G_PI / 2,
+                   renderer->priv->value * 2 * G_PI - G_PI / 2);
+        cairo_fill (context);
+}
+
+static void
+gdm_cell_renderer_timer_render (GtkCellRenderer      *cell,
+                                GdkWindow            *window,
+                                GtkWidget            *widget,
+                                GdkRectangle         *background_area,
+                                GdkRectangle         *cell_area,
+                                GdkRectangle         *expose_area,
+                                GtkCellRendererState  renderer_state)
+{
+        GdmCellRendererTimer *renderer;
+        cairo_t              *context;
+        GtkStateType          widget_state;
+
+        renderer = GDM_CELL_RENDERER_TIMER (cell);
+
+        if (renderer->priv->value <= G_MINDOUBLE) {
+                return;
+        }
+
+        context = gdk_cairo_create (GDK_DRAWABLE (window));
+
+        if (expose_area != NULL) {
+                gdk_cairo_rectangle (context, expose_area);
+                cairo_clip (context);
+        }
+
+        cairo_translate (context,
+                         cell_area->x + cell->xpad,
+                         cell_area->y + cell->ypad);
+
+        if (renderer_state & GTK_CELL_RENDERER_SELECTED) {
+                widget_state = GTK_STATE_SELECTED;
+        } else {
+                widget_state = GTK_STATE_NORMAL;
+        }
+
+        draw_timer (renderer, context,
+                    &widget->style->base[widget_state],
+                    &widget->style->text_aa[widget_state],
+                    cell_area->width, cell_area->height);
+
+        cairo_destroy (context);
+}
+
+static void
+gdm_cell_renderer_timer_class_init (GdmCellRendererTimerClass *klass)
+{
+        GObjectClass *object_class = G_OBJECT_CLASS (klass);
+        GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (klass);
+
+        object_class->get_property = gdm_cell_renderer_timer_get_property;
+        object_class->set_property = gdm_cell_renderer_timer_set_property;
+
+        cell_class->get_size = gdm_cell_renderer_timer_get_size;
+        cell_class->render = gdm_cell_renderer_timer_render;
+
+        g_object_class_install_property (object_class,
+                                         PROP_VALUE,
+                                         g_param_spec_double ("value",
+                                         _("Value"),
+                                         _("percentage of time complete"),
+                                         0.0, 1.0, 0.0,
+                                         G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
+        g_type_class_add_private (object_class,
+                            sizeof (GdmCellRendererTimerPrivate));
+}
+
+static void
+gdm_cell_renderer_timer_init (GdmCellRendererTimer *renderer)
+{
+        renderer->priv = GDM_CELL_RENDERER_TIMER_GET_PRIVATE (renderer);
+}
+
+GtkCellRenderer*
+gdm_cell_renderer_timer_new (void)
+{
+        return g_object_new (GDM_TYPE_CELL_RENDERER_TIMER, NULL);
+}
+

Added: trunk/gui/simple-greeter/gdm-cell-renderer-timer.h
==============================================================================
--- (empty file)
+++ trunk/gui/simple-greeter/gdm-cell-renderer-timer.h	Wed Mar  5 04:50:29 2008
@@ -0,0 +1,57 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *  Written by: Ray Strode <rstrode redhat com>
+ */
+#ifndef __GDM_CELL_RENDERER_TIMER_H
+#define __GDM_CELL_RENDERER_TIMER_H
+
+#include <gtk/gtkcellrenderer.h>
+
+G_BEGIN_DECLS
+
+#define GDM_TYPE_CELL_RENDERER_TIMER (gdm_cell_renderer_timer_get_type ())
+#define GDM_CELL_RENDERER_TIMER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GDM_TYPE_CELL_RENDERER_TIMER, GdmCellRendererTimer))
+#define GDM_CELL_RENDERER_TIMER_CLASS(klass)	  (G_TYPE_CHECK_CLASS_CAST ((klass), GDM_TYPE_CELL_RENDERER_TIMER, GdmCellRendererTimerClass))
+#define GTK_IS_CELL_RENDERER_TIMER(obj)	  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GDM_TYPE_CELL_RENDERER_TIMER))
+#define GTK_IS_CELL_RENDERER_TIMER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDM_TYPE_CELL_RENDERER_TIMER))
+#define GDM_CELL_RENDERER_TIMER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GDM_TYPE_CELL_RENDERER_TIMER, GdmCellRendererTimerClass))
+
+typedef struct _GdmCellRendererTimer         GdmCellRendererTimer;
+typedef struct _GdmCellRendererTimerClass    GdmCellRendererTimerClass;
+typedef struct _GdmCellRendererTimerPrivate  GdmCellRendererTimerPrivate;
+
+struct _GdmCellRendererTimer
+{
+  GtkCellRenderer              parent;
+
+  /*< private >*/
+  GdmCellRendererTimerPrivate *priv;
+};
+
+struct _GdmCellRendererTimerClass
+{
+  GtkCellRendererClass parent_class;
+};
+
+GType		 gdm_cell_renderer_timer_get_type (void);
+GtkCellRenderer* gdm_cell_renderer_timer_new      (void);
+
+G_END_DECLS
+
+#endif  /* __GDM_CELL_RENDERER_TIMER_H */