libview/ev-loading-window.c

   1 /* ev-loading-window.c
   2  *  this file is part of evince, a gnome document viewer
   3  *
   4  * Copyright (C) 2010 Carlos Garcia Campos <carlosgc@gnome.org>
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <string.h>
  24 #include <glib/gi18n.h>
  25 #include "ev-loading-window.h"
  26
  27 enum {
  28         PROP_0,
  29         PROP_PARENT
  30 };
  31
  32 struct _EvLoadingWindow {
  33         GtkWindow  base_instance;
  34
  35         GtkWindow *parent;
  36
  37         gint       x;
  38         gint       y;
  39         gint       width;
  40         gint       height;
  41 };
  42
  43 struct _EvLoadingWindowClass {
  44         GtkWindowClass base_class;
  45 };
  46
  47 G_DEFINE_TYPE (EvLoadingWindow, ev_loading_window, GTK_TYPE_WINDOW)
  48
  49 static void
  50 ev_loading_window_set_property (GObject      *object,
  51                                 guint         prop_id,
  52                                 const GValue *value,
  53                                 GParamSpec   *pspec)
  54 {
  55         EvLoadingWindow *window = EV_LOADING_WINDOW (object);
  56
  57         switch (prop_id) {
  58         case PROP_PARENT:
  59                 window->parent = g_value_get_object (value);
  60                 break;
  61         default:
  62                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  63         }
  64 }
  65
  66 static void
  67 ev_loading_window_init (EvLoadingWindow *window)
  68 {
  69         GtkWindow   *gtk_window = GTK_WINDOW (window);
  70         GtkWidget   *widget = GTK_WIDGET (window);
  71         GtkWidget   *hbox;
  72         GtkWidget   *spinner;
  73         GtkWidget   *label;
  74         GtkStyle    *style;
  75         GdkColor    fg, bg;
  76         const gchar *loading_text = _("Loading…");
  77         const gchar *fg_color_name = "info_fg_color";
  78         const gchar *bg_color_name = "info_bg_color";
  79
  80         hbox = gtk_hbox_new (FALSE, 12);
  81
  82         spinner = gtk_spinner_new ();
  83         gtk_spinner_start (GTK_SPINNER (spinner));
  84         gtk_box_pack_start (GTK_BOX (hbox), spinner, FALSE, FALSE, 0);
  85         gtk_widget_show (spinner);
  86
  87         label = gtk_label_new (loading_text);
  88         gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
  89         gtk_widget_show (label);
  90
  91         gtk_container_add (GTK_CONTAINER (window), hbox);
  92         gtk_widget_show (hbox);
  93
  94         gtk_widget_set_app_paintable (widget, TRUE);
  95
  96         gtk_container_set_border_width (GTK_CONTAINER (window), 10);
  97
  98         gtk_window_set_accept_focus (gtk_window, FALSE);
  99         gtk_window_set_focus_on_map (gtk_window, FALSE);
 100         gtk_window_set_decorated (gtk_window, FALSE);
 101         gtk_window_set_skip_taskbar_hint (gtk_window, TRUE);
 102         gtk_window_set_skip_pager_hint (gtk_window, TRUE);
 103         gtk_window_set_resizable (gtk_window, FALSE);
 104
 105         style = gtk_widget_get_style (widget);
 106         if (!gtk_style_lookup_color (style, fg_color_name, &fg) ||
 107             !gtk_style_lookup_color (style, bg_color_name, &bg)) {
 108                 fg.pixel = 0;
 109                 fg.red = 0xb800;
 110                 fg.green = 0xad00;
 111                 fg.blue = 0x9d00;
 112
 113                 bg.pixel = 0;
 114                 bg.red = 0xff00;
 115                 bg.green = 0xff00;
 116                 bg.blue = 0xbf00;
 117         }
 118
 119         if (!gdk_color_equal (&bg, &style->bg[GTK_STATE_NORMAL]))
 120                 gtk_widget_modify_bg (widget, GTK_STATE_NORMAL, &bg);
 121         if (!gdk_color_equal (&fg, &style->fg[GTK_STATE_NORMAL]))
 122                 gtk_widget_modify_fg (widget, GTK_STATE_NORMAL, &fg);
 123 }
 124
 125 static GObject *
 126 ev_loading_window_constructor (GType                  type,
 127                                guint                  n_construct_properties,
 128                                GObjectConstructParam *construct_params)
 129 {
 130         GObject         *object;
 131         EvLoadingWindow *window;
 132         GtkWindow       *gtk_window;
 133
 134         object = G_OBJECT_CLASS (ev_loading_window_parent_class)->constructor (type,
 135                                                                                n_construct_properties,
 136                                                                                construct_params);
 137         window = EV_LOADING_WINDOW (object);
 138         gtk_window = GTK_WINDOW (window);
 139
 140         gtk_window_set_transient_for (gtk_window, window->parent);
 141         gtk_window_set_destroy_with_parent (gtk_window, TRUE);
 142
 143         return object;
 144 }
 145
 146 static void
 147 _cairo_rounded_rectangle (cairo_t *cr,
 148                           gint     width,
 149                           gint     height,
 150                           gdouble  radius)
 151 {
 152         cairo_move_to (cr, radius, 0);
 153         cairo_line_to (cr, width - radius, 0);
 154         cairo_curve_to (cr,
 155                         width, 0,
 156                         width, 0,
 157                         width,
 158                         radius);
 159         cairo_line_to (cr, width, height - radius);
 160         cairo_curve_to (cr,
 161                         width,height,
 162                         width, height,
 163                         width - radius,
 164                         height);
 165         cairo_line_to (cr, radius, height);
 166         cairo_curve_to (cr,
 167                         0, height,
 168                         0, height,
 169                         0, height - radius);
 170         cairo_line_to (cr, 0, radius);
 171         cairo_curve_to (cr,
 172                         0, 0,
 173                         0, 0,
 174                         radius, 0);
 175 }
 176
 177 static void
 178 ev_loading_window_size_allocate (GtkWidget      *widget,
 179                                  GtkAllocation  *allocation)
 180 {
 181         EvLoadingWindow *window = EV_LOADING_WINDOW (widget);
 182         GdkPixmap       *mask;
 183         cairo_t         *cr;
 184         double           r;
 185
 186         GTK_WIDGET_CLASS (ev_loading_window_parent_class)->size_allocate (widget, allocation);
 187
 188         if (allocation->width == window->width && allocation->height == window->height)
 189                 return;
 190
 191         window->width = allocation->width;
 192         window->height = allocation->height;
 193
 194         mask = gdk_pixmap_new (NULL, window->width, window->height, 1);
 195         cr = gdk_cairo_create (GDK_DRAWABLE (mask));
 196
 197         cairo_save (cr);
 198         cairo_rectangle (cr, 0, 0, window->width, window->height);
 199         cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
 200         cairo_fill (cr);
 201         cairo_restore (cr);
 202
 203         cairo_set_source_rgb (cr, 1., 1., 1.);
 204         r = MIN (window->width, window->height) / 2.;
 205         _cairo_rounded_rectangle (cr, window->width, window->height, r);
 206         cairo_fill (cr);
 207
 208         cairo_destroy (cr);
 209
 210         gtk_widget_shape_combine_mask (widget, mask, 0, 0);
 211         g_object_unref (mask);
 212 }
 213
 214 static void
 215 ev_loading_window_hide (GtkWidget *widget)
 216 {
 217         EvLoadingWindow *window = EV_LOADING_WINDOW (widget);
 218
 219         window->x = window->y = 0;
 220
 221         GTK_WIDGET_CLASS (ev_loading_window_parent_class)->hide (widget);
 222 }
 223
 224 static void
 225 ev_loading_window_class_init (EvLoadingWindowClass *klass)
 226 {
 227         GObjectClass   *g_object_class = G_OBJECT_CLASS (klass);
 228         GtkWidgetClass *gtk_widget_class = GTK_WIDGET_CLASS (klass);
 229
 230         g_object_class->constructor = ev_loading_window_constructor;
 231         g_object_class->set_property = ev_loading_window_set_property;
 232
 233         gtk_widget_class->size_allocate = ev_loading_window_size_allocate;
 234         gtk_widget_class->hide = ev_loading_window_hide;
 235
 236         g_object_class_install_property (g_object_class,
 237                                          PROP_PARENT,
 238                                          g_param_spec_object ("parent",
 239                                                               "Parent",
 240                                                               "The parent window",
 241                                                               GTK_TYPE_WINDOW,
 242                                                               G_PARAM_WRITABLE |
 243                                                               G_PARAM_CONSTRUCT_ONLY));
 244 }
 245
 246 /* Public methods */
 247 GtkWidget *
 248 ev_loading_window_new (GtkWindow *parent)
 249 {
 250         GtkWidget *window;
 251
 252         g_return_val_if_fail (GTK_IS_WINDOW (parent), NULL);
 253
 254         window = g_object_new (EV_TYPE_LOADING_WINDOW,
 255                                "parent", parent,
 256                                NULL);
 257         return window;
 258 }
 259
 260 void
 261 ev_loading_window_get_size (EvLoadingWindow *window,
 262                             gint            *width,
 263                             gint            *height)
 264 {
 265         if (width) *width = window->width;
 266         if (height) *height = window->height;
 267 }
 268
 269 void
 270 ev_loading_window_move (EvLoadingWindow *window,
 271                         gint             x,
 272                         gint             y)
 273 {
 274         if (x == window->x && y == window->y)
 275                 return;
 276
 277         window->x = x;
 278         window->y = y;
 279         gtk_window_move (GTK_WINDOW (window), x, y);
 280 }