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) 2011-2014 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 /* void aloc_callback(GtkWidget* child, GtkWidget* fixed){ */
  74 /*   GtkAllocation child_allocation; */
  75 /*   GtkRequisition child_requisition; */
  76
  77 /*   //TODO */
  78 /*   // if child is an xwidget, find its clipping area and modify allocation */
  79
  80 /*   struct xwidget_view* xv = (struct xwidget_view*) g_object_get_data (G_OBJECT (child), XG_XWIDGET_VIEW); */
  81 /*   printf("aloc callback %d %s\n", xv, gtk_widget_get_name(child)); */
  82 /*   if(xv){ */
  83 /*     printf(" allocation modification for xw\n"); */
  84 /*     gtk_widget_get_allocation(child, &child_allocation); */
  85 /*     child_allocation.width = xv->clip_right; */
  86 /*     child_allocation.height = xv->clip_bottom - xv->clip_top; */
  87 /*     gtk_widget_size_allocate (child, &child_allocation); */
  88 /*     //TODO find a way to remove this feeble workaround */
  89 /*   } */
  90
  91 /* } */
  92
  93 struct GtkFixedPrivateL
  94 {
  95   GList *children;
  96 };
  97
  98 static void emacs_fixed_gtk_widget_size_allocate (GtkWidget *widget,
  99                                            GtkAllocation *allocation){
 100   //for xwidgets
 101
 102
 103   //TODO 1st call base class method
 104   EmacsFixedClass *klass;
 105   GtkWidgetClass *parent_class;
 106   struct GtkFixedPrivateL* priv;
 107   GtkFixedChild *child;
 108   GtkAllocation child_allocation;
 109   GtkRequisition child_requisition;
 110   GList *children;
 111   struct xwidget_view* xv;
 112
 113   //  printf(" emacs_fixed_gtk_widget_size_allocate\n");
 114   klass = EMACS_FIXED_GET_CLASS (widget);
 115   parent_class = g_type_class_peek_parent (klass);
 116   parent_class->size_allocate (widget, allocation);
 117
 118   priv = G_TYPE_INSTANCE_GET_PRIVATE (widget,
 119                                GTK_TYPE_FIXED,
 120                                struct GtkFixedPrivateL);
 121   //fixed->priv = G_TYPE_INSTANCE_GET_PRIVATE (fixed, GTK_TYPE_FIXED, GtkFixedPrivate);
 122   //then modify allocations
 123   /* gtk_container_foreach  (widget, */
 124   /*                         aloc_callback, */
 125   /*                         widget); */
 126
 127   //begin copy paste extravaganza!!!
 128
 129   //GtkFixed *fixed = GTK_FIXED (widget);
 130   //GtkFixedPrivate *priv = fixed->priv;
 131
 132
 133   gtk_widget_set_allocation (widget, allocation);
 134
 135   if (gtk_widget_get_has_window (widget))
 136     {
 137       if (gtk_widget_get_realized (widget))
 138         gdk_window_move_resize (gtk_widget_get_window (widget),
 139                                 allocation->x,
 140                                 allocation->y,
 141                                 allocation->width,
 142                                 allocation->height);
 143     }
 144
 145   for (children = priv->children;
 146        children;
 147        children = children->next)
 148     {
 149       child = children->data;
 150
 151       if (!gtk_widget_get_visible (child->widget))
 152         continue;
 153
 154       gtk_widget_get_preferred_size (child->widget, &child_requisition, NULL);
 155       child_allocation.x = child->x;
 156       child_allocation.y = child->y;
 157
 158       if (!gtk_widget_get_has_window (widget))
 159         {
 160           child_allocation.x += allocation->x;
 161           child_allocation.y += allocation->y;
 162         }
 163
 164       child_allocation.width = child_requisition.width;
 165       child_allocation.height = child_requisition.height;
 166
 167
 168
 169       xv = (struct xwidget_view*) g_object_get_data (G_OBJECT (child->widget), XG_XWIDGET_VIEW);
 170       //printf("aloc callback %d %s\n", xv, gtk_widget_get_name(child));
 171       if(xv){
 172         //gtk_widget_get_allocation(child, &child_allocation);
 173         child_allocation.width = xv->clip_right;
 174         child_allocation.height = xv->clip_bottom - xv->clip_top;
 175         //gtk_widget_size_allocate (child, &child_allocation);
 176         //TODO find a way to remove this feeble workaround
 177         //        printf(" allocation internal modification for xw %d  %d,%d\n",xv,        child_allocation.width,        child_allocation.height);
 178
 179       }
 180       gtk_widget_size_allocate (child->widget, &child_allocation);
 181
 182     }
 183
 184 }
 185
 186 #endif  /* HAVE_XWIDGETS */
 187
 188 static void
 189 emacs_fixed_class_init (EmacsFixedClass *klass)
 190 {
 191   GtkWidgetClass *widget_class;
 192   GtkFixedClass *fixed_class;
 193
 194   widget_class = (GtkWidgetClass*) klass;
 195   fixed_class = (GtkFixedClass*) klass;
 196
 197   widget_class->get_preferred_width = emacs_fixed_get_preferred_width;
 198   widget_class->get_preferred_height = emacs_fixed_get_preferred_height;
 199 #ifdef HAVE_XWIDGETS
 200   widget_class->size_allocate =  emacs_fixed_gtk_widget_size_allocate;
 201 #endif
 202   g_type_class_add_private (klass, sizeof (EmacsFixedPrivate));
 203 }
 204
 205 static GType
 206 emacs_fixed_child_type (GtkFixed *container)
 207 {
 208   return GTK_TYPE_WIDGET;
 209 }
 210
 211 static void
 212 emacs_fixed_init (EmacsFixed *fixed)
 213 {
 214   fixed->priv = G_TYPE_INSTANCE_GET_PRIVATE (fixed, EMACS_TYPE_FIXED,
 215                                              EmacsFixedPrivate);
 216   fixed->priv->f = 0;
 217 }
 218
 219 /**
 220  * emacs_fixed_new:
 221  *
 222  * Creates a new #EmacsFixed.
 223  *
 224  * Returns: a new #EmacsFixed.
 225  */
 226 GtkWidget*
 227 emacs_fixed_new (struct frame *f)
 228 {
 229   EmacsFixed *fixed = g_object_new (EMACS_TYPE_FIXED, NULL);
 230   EmacsFixedPrivate *priv = fixed->priv;
 231   priv->f = f;
 232   return GTK_WIDGET (fixed);
 233 }
 234
 235 static void
 236 emacs_fixed_get_preferred_width (GtkWidget *widget,
 237                                  gint      *minimum,
 238                                  gint      *natural)
 239 {
 240   EmacsFixed *fixed = EMACS_FIXED (widget);
 241   EmacsFixedPrivate *priv = fixed->priv;
 242   int w = priv->f->output_data.x->size_hints.min_width;
 243   if (minimum) *minimum = w;
 244   if (natural) *natural = w;
 245 }
 246
 247 static void
 248 emacs_fixed_get_preferred_height (GtkWidget *widget,
 249                                   gint      *minimum,
 250                                   gint      *natural)
 251 {
 252   EmacsFixed *fixed = EMACS_FIXED (widget);
 253   EmacsFixedPrivate *priv = fixed->priv;
 254   int h = priv->f->output_data.x->size_hints.min_height;
 255   if (minimum) *minimum = h;
 256   if (natural) *natural = h;
 257 }
 258
 259
 260 /* Override the X function so we can intercept Gtk+ 3 calls.
 261    Use our values for min_width/height so that KDE don't freak out
 262    (Bug#8919), and so users can resize our frames as they wish.  */
 263
 264 void
 265 XSetWMSizeHints (Display* d,
 266                  Window w,
 267                  XSizeHints* hints,
 268                  Atom prop)
 269 {
 270   struct x_display_info *dpyinfo = x_display_info_for_display (d);
 271   struct frame *f = x_top_window_to_frame (dpyinfo, w);
 272   long data[18];
 273   data[0] = hints->flags;
 274   data[1] = hints->x;
 275   data[2] = hints->y;
 276   data[3] = hints->width;
 277   data[4] = hints->height;
 278   data[5] = hints->min_width;
 279   data[6] = hints->min_height;
 280   data[7] = hints->max_width;
 281   data[8] = hints->max_height;
 282   data[9] = hints->width_inc;
 283   data[10] = hints->height_inc;
 284   data[11] = hints->min_aspect.x;
 285   data[12] = hints->min_aspect.y;
 286   data[13] = hints->max_aspect.x;
 287   data[14] = hints->max_aspect.y;
 288   data[15] = hints->base_width;
 289   data[16] = hints->base_height;
 290   data[17] = hints->win_gravity;
 291
 292   if ((hints->flags & PMinSize) && f)
 293     {
 294       int w = f->output_data.x->size_hints.min_width;
 295       int h = f->output_data.x->size_hints.min_height;
 296       data[5] = w;
 297       data[6] = h;
 298     }
 299
 300   XChangeProperty (d, w, prop, XA_WM_SIZE_HINTS, 32, PropModeReplace,
 301                    (unsigned char *) data, 18);
 302 }
 303
 304 /* Override this X11 function.
 305    This function is in the same X11 file as the one above.  So we must
 306    provide it also.  */
 307
 308 void
 309 XSetWMNormalHints (Display *d, Window w, XSizeHints *hints)
 310 {
 311   XSetWMSizeHints (d, w, hints, XA_WM_NORMAL_HINTS);
 312 }