git.maemo.org Git - modest/blob - src/widgets/modest-recpt-view.c

   1 /* Copyright (c) 2007, Nokia Corporation
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  * * Redistributions of source code must retain the above copyright
   9  *   notice, this list of conditions and the following disclaimer.
  10  * * Redistributions in binary form must reproduce the above copyright
  11  *   notice, this list of conditions and the following disclaimer in the
  12  *   documentation and/or other materials provided with the distribution.
  13  * * Neither the name of the Nokia Corporation nor the names of its
  14  *   contributors may be used to endorse or promote products derived from
  15  *   this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <config.h>
  31
  32 #include <glib/gi18n-lib.h>
  33
  34 #include <gtk/gtkwidget.h>
  35
  36 #include <modest-text-utils.h>
  37 #include <modest-recpt-view.h>
  38
  39 #define RECPT_VIEW_CLICK_AREA_THRESHOLD 32
  40
  41 static GObjectClass *parent_class = NULL;
  42
  43 /* signals */
  44 enum {
  45         ACTIVATE_SIGNAL,
  46         LAST_SIGNAL
  47 };
  48
  49 typedef struct _ModestRecptViewPriv ModestRecptViewPriv;
  50
  51 struct _ModestRecptViewPriv
  52 {
  53         gboolean button_pressed;
  54         gdouble pressed_x, pressed_y;
  55 };
  56
  57 #define MODEST_RECPT_VIEW_GET_PRIVATE(o)        \
  58         (G_TYPE_INSTANCE_GET_PRIVATE ((o), MODEST_TYPE_RECPT_VIEW, ModestRecptViewPriv))
  59
  60 static guint signals[LAST_SIGNAL] = {0};
  61
  62 /* static functions: GObject */
  63 static void modest_recpt_view_instance_init (GTypeInstance *instance, gpointer g_class);
  64 static void modest_recpt_view_finalize (GObject *object);
  65 static void modest_recpt_view_class_init (ModestRecptViewClass *klass);
  66 /* static functions: GtkWidget */
  67 static gint button_press_event (GtkWidget *widget, GdkEventButton *event, gpointer user_data);
  68 static gint button_release_event (GtkWidget *widget, GdkEventButton *event, gpointer user_data);
  69
  70 /**
  71  * modest_recpt_view_new:
  72  *
  73  * Return value: a new #ModestRecptView instance implemented for Gtk+
  74  **/
  75 GtkWidget*
  76 modest_recpt_view_new (void)
  77 {
  78         ModestRecptView *self = g_object_new (MODEST_TYPE_RECPT_VIEW, NULL);
  79
  80         return GTK_WIDGET (self);
  81 }
  82
  83 void
  84 modest_recpt_view_set_recipients (ModestRecptView *recpt_view, const gchar *recipients)
  85 {
  86         const GtkWidget *text_view = NULL;
  87         GtkTextBuffer *buffer = NULL;
  88
  89         text_view = modest_scroll_text_get_text_view (MODEST_SCROLL_TEXT (recpt_view));
  90         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view));
  91
  92         gtk_text_buffer_set_text (buffer, recipients, -1);
  93         if (GTK_WIDGET_REALIZED (recpt_view))
  94                 gtk_widget_queue_resize (GTK_WIDGET (recpt_view));
  95
  96 }
  97
  98 static gint
  99 button_press_event (GtkWidget *widget,
 100                     GdkEventButton *event,
 101                     gpointer user_data)
 102 {
 103         ModestRecptViewPriv *priv = MODEST_RECPT_VIEW_GET_PRIVATE (MODEST_RECPT_VIEW (user_data));
 104
 105         if (event->type == GDK_BUTTON_PRESS && event->button == 1) {
 106                 priv->button_pressed = TRUE;
 107                 priv->pressed_x = event->x;
 108                 priv->pressed_y = event->y;
 109         }
 110         return TRUE;
 111 }
 112
 113 static gint
 114 button_release_event (GtkWidget *widget,
 115                       GdkEventButton *event,
 116                       gpointer user_data)
 117 {
 118         ModestRecptViewPriv *priv = MODEST_RECPT_VIEW_GET_PRIVATE (MODEST_RECPT_VIEW (user_data));
 119         const GtkWidget *text_view = NULL;
 120
 121         text_view = modest_scroll_text_get_text_view (MODEST_SCROLL_TEXT (user_data));
 122
 123         if (event->type != GDK_BUTTON_RELEASE)
 124                 return TRUE;
 125
 126         if ((priv->button_pressed) &&
 127             (event->type == GDK_BUTTON_RELEASE) &&
 128             ((event->x >= priv->pressed_x - RECPT_VIEW_CLICK_AREA_THRESHOLD)&&
 129              (event->x <= priv->pressed_x + RECPT_VIEW_CLICK_AREA_THRESHOLD)) &&
 130             ((event->y >= priv->pressed_y - RECPT_VIEW_CLICK_AREA_THRESHOLD)&&
 131              (event->y <= priv->pressed_y + RECPT_VIEW_CLICK_AREA_THRESHOLD))) {
 132                 priv->button_pressed = FALSE;
 133                 if (event->button == 1) {
 134                         gint buffer_x, buffer_y;
 135                         int index;
 136                         GtkTextIter iter;
 137                         gtk_widget_grab_focus (GTK_WIDGET (text_view));
 138                         gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (text_view), GTK_TEXT_WINDOW_WIDGET,
 139                                                                event->x, event->y, &buffer_x, &buffer_y);
 140                         gtk_text_view_get_iter_at_location (GTK_TEXT_VIEW (text_view), &iter, buffer_x, buffer_y);
 141                         index = gtk_text_iter_get_offset (&iter);
 142
 143                         if (!gtk_text_iter_is_end (&iter)) {
 144                                 int selection_start, selection_end;
 145                                 gboolean selected = FALSE;
 146                                 GtkTextIter start_iter, end_iter;
 147                                 GtkTextBuffer *buffer;
 148
 149                                 buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view));
 150                                 if (gtk_text_buffer_get_selection_bounds (buffer, &start_iter, &end_iter) &&
 151                                     gtk_text_iter_in_range (&iter, &start_iter, &end_iter)) {
 152                                         selected = TRUE;
 153                                 } else {
 154                                         gchar *text = NULL;
 155                                         GtkTextIter start_iter, end_iter;
 156
 157                                         gtk_text_buffer_get_start_iter (buffer, &start_iter);
 158                                         gtk_text_buffer_get_end_iter (buffer, &end_iter);
 159                                         text = gtk_text_buffer_get_text (buffer, &start_iter, &end_iter, FALSE);
 160
 161                                         /* text will not be NULL, but source code checkers should be satisfied */
 162                                         if (text) {
 163                                                 modest_text_utils_address_range_at_position (text,
 164                                                                                              index,
 165                                                                                              &selection_start, &selection_end);
 166                                                 /* TODO: now gtk label tries to select more than the label as usual,
 167                                                  *  and we force it to recover the selected region for the defined area.
 168                                                  *  It should be fixed (maybe preventing gtklabel to manage selections
 169                                                  *  in parallel with us
 170                                                  */
 171                                                 gtk_text_buffer_get_iter_at_offset (buffer, &start_iter, selection_start);
 172                                                 gtk_text_buffer_get_iter_at_offset (buffer, &end_iter, selection_end);
 173                                                 gtk_text_buffer_select_range (buffer, &start_iter, &end_iter);
 174
 175                                                 g_free (text);
 176                                         }
 177                                 }
 178
 179                                 if (selected) {
 180                                         gchar *selection;
 181
 182                                         gtk_text_buffer_get_selection_bounds (buffer, &start_iter, &end_iter);
 183                                         selection = gtk_text_buffer_get_text (buffer, &start_iter, &end_iter, FALSE);
 184                                         g_signal_emit (G_OBJECT (user_data), signals[ACTIVATE_SIGNAL], 0, selection);
 185                                         g_free (selection);
 186                                 }
 187
 188                         }
 189                         return TRUE;
 190                 }
 191         }
 192         priv->button_pressed = FALSE;
 193         return TRUE;
 194 }
 195
 196 static void
 197 modest_recpt_view_instance_init (GTypeInstance *instance, gpointer g_class)
 198 {
 199         const GtkTextView *text_view = NULL;
 200
 201         text_view = GTK_TEXT_VIEW(modest_scroll_text_get_text_view (MODEST_SCROLL_TEXT (instance)));
 202
 203         g_signal_connect (G_OBJECT (text_view), "button-press-event", G_CALLBACK (button_press_event), instance);
 204         g_signal_connect_after (G_OBJECT (text_view), "button-release-event", G_CALLBACK (button_release_event), instance);
 205
 206         return;
 207 }
 208
 209 static void
 210 modest_recpt_view_finalize (GObject *object)
 211 {
 212         (*parent_class->finalize) (object);
 213
 214         return;
 215 }
 216
 217 static void
 218 modest_recpt_view_class_init (ModestRecptViewClass *klass)
 219 {
 220         GObjectClass *object_class;
 221         GtkWidgetClass *widget_class;
 222
 223         parent_class = g_type_class_peek_parent (klass);
 224         object_class = (GObjectClass*) klass;
 225         widget_class = GTK_WIDGET_CLASS (klass);
 226
 227         object_class->finalize = modest_recpt_view_finalize;
 228
 229         klass->activate = NULL;
 230
 231         g_type_class_add_private (object_class, sizeof (ModestRecptViewPriv));
 232
 233         signals[ACTIVATE_SIGNAL] =
 234                 g_signal_new ("activate",
 235                               G_TYPE_FROM_CLASS (object_class),
 236                               G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
 237                               G_STRUCT_OFFSET(ModestRecptViewClass, activate),
 238                               NULL, NULL,
 239                               g_cclosure_marshal_VOID__STRING,
 240                               G_TYPE_NONE, 1, G_TYPE_STRING);
 241
 242         return;
 243 }
 244
 245 GType
 246 modest_recpt_view_get_type (void)
 247 {
 248         static GType type = 0;
 249
 250         if (G_UNLIKELY(type == 0))
 251         {
 252                 static const GTypeInfo info =
 253                 {
 254                   sizeof (ModestRecptViewClass),
 255                   NULL,   /* base_init */
 256                   NULL,   /* base_finalize */
 257                   (GClassInitFunc) modest_recpt_view_class_init,   /* class_init */
 258                   NULL,   /* class_finalize */
 259                   NULL,   /* class_data */
 260                   sizeof (ModestRecptView),
 261                   0,      /* n_preallocs */
 262                   modest_recpt_view_instance_init    /* instance_init */
 263                 };
 264
 265                 type = g_type_register_static (MODEST_TYPE_SCROLL_TEXT,
 266                         "ModestRecptView",
 267                         &info, 0);
 268
 269         }
 270
 271         return type;
 272 }