/* * 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 */ #include "config.h" #include "gdm-cell-renderer-timer.h" #include #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) { *width = cell->xpad * 2 + 24; } if (height != NULL) { *height = cell->ypad * 2 + 24; } } static double get_opacity_for_value (double value) { const double start_value = 0.05; const double end_value = 0.33; if (value < start_value) { return 0.0; } if (value >= end_value) { return 1.0; } return ((value - start_value) / (end_value - start_value)); } static void draw_timer (GdmCellRendererTimer *renderer, cairo_t *context, GdkColor *fg, GdkColor *bg, int width, int height) { double radius; double opacity; opacity = get_opacity_for_value (renderer->priv->value); if (opacity <= G_MINDOUBLE) { return; } radius = .5 * (MIN (width, height) / 2.0); cairo_translate (context, width / 2., height / 2.); cairo_set_source_rgba (context, fg->red / 65535.0, fg->green / 65535.0, fg->blue / 65535.0, opacity); cairo_move_to (context, 0, 0); cairo_arc (context, 0, 0, radius + 1, 0, 2 * G_PI); cairo_fill (context); cairo_set_source_rgb (context, bg->red / 65535.0, bg->green / 65535.0, bg->blue / 65535.0); 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_clip (context); cairo_paint_with_alpha (context, opacity); } 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); widget_state = GTK_STATE_NORMAL; if (renderer_state & GTK_CELL_RENDERER_SELECTED) { if (GTK_WIDGET_HAS_FOCUS (widget)) { widget_state = GTK_STATE_SELECTED; } else { widget_state = GTK_STATE_ACTIVE; } } if (renderer_state & GTK_CELL_RENDERER_INSENSITIVE) { widget_state = GTK_STATE_INSENSITIVE; } draw_timer (renderer, context, &widget->style->text_aa[widget_state], &widget->style->base[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); }