code.delx.au - gnu-emacs/blob - src/emacsgtkfixed.c

   1 /* A Gtk Widget that inherits GtkFixed, but can be shrunk.
   2 This file is only use when compiling with Gtk+ 3.
   3
   4 Copyright (C) 2011-2015 Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software: you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation, either version 3 of the License, or
  11 (at your option) any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include <config.h>
  22
  23 #include "lisp.h"
  24 #include "frame.h"
  25 #include "xterm.h"
  26 #ifdef HAVE_XWIDGETS
  27 #include "xwidget.h"
  28 #endif
  29 #include "emacsgtkfixed.h"
  30
  31 /* Silence a bogus diagnostic; see GNOME bug 683906.  */
  32 #if 4 < __GNUC__ + (7 <= __GNUC_MINOR__)
  33 # pragma GCC diagnostic push
  34 # pragma GCC diagnostic ignored "-Wunused-local-typedefs"
  35 #endif
  36
  37 //#define EMACS_TYPE_FIXED emacs_fixed_get_type ()
  38 /* #define EMACS_FIXED(obj) \ */
  39 /*   G_TYPE_CHECK_INSTANCE_CAST (obj, EMACS_TYPE_FIXED, EmacsFixed) */
  40
  41 typedef struct _EmacsFixed EmacsFixed;
  42 typedef struct _EmacsFixedPrivate EmacsFixedPrivate;
  43 typedef struct _EmacsFixedClass EmacsFixedClass;
  44
  45 /* struct _EmacsFixed */
  46 /* { */
  47 /*   GtkFixed container; */
  48
  49 /*   /\*< private >*\/ */
  50 /*   EmacsFixedPrivate *priv; */
  51 /* }; */
  52
  53 /* struct _EmacsFixedClass */
  54 /* { */
  55 /*   GtkFixedClass parent_class; */
  56 /* }; */
  57
  58 struct _EmacsFixedPrivate
  59 {
  60   struct frame *f;
  61 };
  62
  63
  64 static void emacs_fixed_get_preferred_width  (GtkWidget *widget,
  65                                               gint      *minimum,
  66                                               gint      *natural);
  67 static void emacs_fixed_get_preferred_height (GtkWidget *widget,
  68                                               gint      *minimum,
  69                                               gint      *natural);
  70 G_DEFINE_TYPE (EmacsFixed, emacs_fixed, GTK_TYPE_FIXED)
  71
  72 #ifdef HAVE_XWIDGETS
  73
  74 struct GtkFixedPrivateL
  75 {
  76   GList *children;
  77 };
  78
  79 static void emacs_fixed_gtk_widget_size_allocate (GtkWidget *widget,
  80                                            GtkAllocation *allocation){
  81   //for xwidgets
  82
  83   //TODO 1st call base class method
  84   EmacsFixedClass *klass;
  85   GtkWidgetClass *parent_class;
  86   struct GtkFixedPrivateL* priv;
  87   GtkFixedChild *child;
  88   GtkAllocation child_allocation;
  89   GtkRequisition child_requisition;
  90   GList *children;
  91   struct xwidget_view* xv;
  92
  93   klass = EMACS_FIXED_GET_CLASS (widget);
  94   parent_class = g_type_class_peek_parent (klass);
  95   parent_class->size_allocate (widget, allocation);
  96
  97   priv = G_TYPE_INSTANCE_GET_PRIVATE (widget,
  98                                GTK_TYPE_FIXED,
  99                                struct GtkFixedPrivateL);
 100
 101   gtk_widget_set_allocation (widget, allocation);
 102
 103   if (gtk_widget_get_has_window (widget))
 104     {
 105       if (gtk_widget_get_realized (widget))
 106         gdk_window_move_resize (gtk_widget_get_window (widget),
 107                                 allocation->x,
 108                                 allocation->y,
 109                                 allocation->width,
 110                                 allocation->height);
 111     }
 112
 113   for (children = priv->children;
 114        children;
 115        children = children->next)
 116     {
 117       child = children->data;
 118
 119       if (!gtk_widget_get_visible (child->widget))
 120         continue;
 121
 122       gtk_widget_get_preferred_size (child->widget, &child_requisition, NULL);
 123       child_allocation.x = child->x;
 124       child_allocation.y = child->y;
 125
 126       if (!gtk_widget_get_has_window (widget))
 127         {
 128           child_allocation.x += allocation->x;
 129           child_allocation.y += allocation->y;
 130         }
 131
 132       child_allocation.width = child_requisition.width;
 133       child_allocation.height = child_requisition.height;
 134
 135
 136
 137       xv = (struct xwidget_view*) g_object_get_data (G_OBJECT (child->widget), XG_XWIDGET_VIEW);
 138       if(xv){
 139         child_allocation.width = xv->clip_right;
 140         child_allocation.height = xv->clip_bottom - xv->clip_top;
 141       }
 142       gtk_widget_size_allocate (child->widget, &child_allocation);
 143
 144     }
 145
 146 }
 147
 148 #endif  /* HAVE_XWIDGETS */
 149
 150 static void
 151 emacs_fixed_class_init (EmacsFixedClass *klass)
 152 {
 153   GtkWidgetClass *widget_class;
 154   GtkFixedClass *fixed_class;
 155
 156   widget_class = (GtkWidgetClass*) klass;
 157   fixed_class = (GtkFixedClass*) klass;
 158
 159   widget_class->get_preferred_width = emacs_fixed_get_preferred_width;
 160   widget_class->get_preferred_height = emacs_fixed_get_preferred_height;
 161 #ifdef HAVE_XWIDGETS
 162   widget_class->size_allocate =  emacs_fixed_gtk_widget_size_allocate;
 163 #endif
 164   g_type_class_add_private (klass, sizeof (EmacsFixedPrivate));
 165 }
 166
 167 static GType
 168 emacs_fixed_child_type (GtkFixed *container)
 169 {
 170   return GTK_TYPE_WIDGET;
 171 }
 172
 173 static void
 174 emacs_fixed_init (EmacsFixed *fixed)
 175 {
 176   fixed->priv = G_TYPE_INSTANCE_GET_PRIVATE (fixed, EMACS_TYPE_FIXED,
 177                                              EmacsFixedPrivate);
 178   fixed->priv->f = 0;
 179 }
 180
 181 /**
 182  * emacs_fixed_new:
 183  *
 184  * Creates a new #EmacsFixed.
 185  *
 186  * Returns: a new #EmacsFixed.
 187  */
 188 GtkWidget*
 189 emacs_fixed_new (struct frame *f)
 190 {
 191   EmacsFixed *fixed = g_object_new (EMACS_TYPE_FIXED, NULL);
 192   EmacsFixedPrivate *priv = fixed->priv;
 193   priv->f = f;
 194   return GTK_WIDGET (fixed);
 195 }
 196
 197 static void
 198 emacs_fixed_get_preferred_width (GtkWidget *widget,
 199                                  gint      *minimum,
 200                                  gint      *natural)
 201 {
 202   EmacsFixed *fixed = EMACS_FIXED (widget);
 203   EmacsFixedPrivate *priv = fixed->priv;
 204   int w = priv->f->output_data.x->size_hints.min_width;
 205   if (minimum) *minimum = w;
 206   if (natural) *natural = w;
 207 }
 208
 209 static void
 210 emacs_fixed_get_preferred_height (GtkWidget *widget,
 211                                   gint      *minimum,
 212                                   gint      *natural)
 213 {
 214   EmacsFixed *fixed = EMACS_FIXED (widget);
 215   EmacsFixedPrivate *priv = fixed->priv;
 216   int h = priv->f->output_data.x->size_hints.min_height;
 217   if (minimum) *minimum = h;
 218   if (natural) *natural = h;
 219 }
 220
 221
 222 /* Override the X function so we can intercept Gtk+ 3 calls.
 223    Use our values for min_width/height so that KDE don't freak out
 224    (Bug#8919), and so users can resize our frames as they wish.  */
 225
 226 void
 227 XSetWMSizeHints (Display* d,
 228                  Window w,
 229                  XSizeHints* hints,
 230                  Atom prop)
 231 {
 232   struct x_display_info *dpyinfo = x_display_info_for_display (d);
 233   struct frame *f = x_top_window_to_frame (dpyinfo, w);
 234   long data[18];
 235   data[0] = hints->flags;
 236   data[1] = hints->x;
 237   data[2] = hints->y;
 238   data[3] = hints->width;
 239   data[4] = hints->height;
 240   data[5] = hints->min_width;
 241   data[6] = hints->min_height;
 242   data[7] = hints->max_width;
 243   data[8] = hints->max_height;
 244   data[9] = hints->width_inc;
 245   data[10] = hints->height_inc;
 246   data[11] = hints->min_aspect.x;
 247   data[12] = hints->min_aspect.y;
 248   data[13] = hints->max_aspect.x;
 249   data[14] = hints->max_aspect.y;
 250   data[15] = hints->base_width;
 251   data[16] = hints->base_height;
 252   data[17] = hints->win_gravity;
 253
 254   if ((hints->flags & PMinSize) && f)
 255     {
 256       int w = f->output_data.x->size_hints.min_width;
 257       int h = f->output_data.x->size_hints.min_height;
 258       data[5] = w;
 259       data[6] = h;
 260     }
 261
 262   XChangeProperty (d, w, prop, XA_WM_SIZE_HINTS, 32, PropModeReplace,
 263                    (unsigned char *) data, 18);
 264 }
 265
 266 /* Override this X11 function.
 267    This function is in the same X11 file as the one above.  So we must
 268    provide it also.  */
 269
 270 void
 271 XSetWMNormalHints (Display *d, Window w, XSizeHints *hints)
 272 {
 273   XSetWMSizeHints (d, w, hints, XA_WM_NORMAL_HINTS);
 274 }