src/emacsgtkfixed.c

   1 /* A Gtk Widget that inherits GtkFixed, but can be shrinked.
   2 This file is only use when compiling with Gtk+ 3.
   3
   4 Copyright (C) 2011  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 "emacsgtkfixed.h"
  24 #include <signal.h>
  25 #include <stdio.h>
  26 #include <setjmp.h>
  27 #include "lisp.h"
  28 #include "frame.h"
  29 #include "xterm.h"
  30 #ifdef HAVE_XWIDGETS
  31 #include "xwidget.h"
  32 #endif
  33 struct _EmacsFixedPrivate
  34 {
  35   struct frame *f;
  36 };
  37
  38
  39 static void emacs_fixed_get_preferred_width  (GtkWidget *widget,
  40                                               gint      *minimum,
  41                                               gint      *natural);
  42 static void emacs_fixed_get_preferred_height (GtkWidget *widget,
  43                                               gint      *minimum,
  44                                               gint      *natural);
  45 G_DEFINE_TYPE (EmacsFixed, emacs_fixed, GTK_TYPE_FIXED)
  46
  47 #ifdef HAVE_XWIDGETS
  48 /* void aloc_callback(GtkWidget* child, GtkWidget* fixed){ */
  49 /*   GtkAllocation child_allocation; */
  50 /*   GtkRequisition child_requisition; */
  51
  52 /*   //TODO */
  53 /*   // if child is an xwidget, find its clipping area and modify allocation */
  54
  55 /*   struct xwidget_view* xv = (struct xwidget_viev*) g_object_get_data (G_OBJECT (child), XG_XWIDGET_VIEW); */
  56 /*   printf("aloc callback %d %s\n", xv, gtk_widget_get_name(child)); */
  57 /*   if(xv){ */
  58 /*     printf(" allocation modification for xw\n"); */
  59 /*     gtk_widget_get_allocation(child, &child_allocation); */
  60 /*     child_allocation.width = xv->clip_right; */
  61 /*     child_allocation.height = xv->clip_bottom - xv->clip_top; */
  62 /*     gtk_widget_size_allocate (child, &child_allocation); */
  63 /*     //TODO find a way to remove this feeble workaround */
  64 /*   } */
  65
  66 /* } */
  67
  68 struct GtkFixedPrivateL
  69 {
  70   GList *children;
  71 };
  72
  73 static void emacs_fixed_gtk_widget_size_allocate (GtkWidget *widget,
  74                                            GtkAllocation *allocation){
  75   //for xwidgets
  76
  77
  78   //TODO 1st call base class method
  79   EmacsFixedClass *klass;
  80   GtkWidgetClass *parent_class;
  81   struct GtkFixedPrivateL* priv;
  82
  83   printf(" emacs_fixed_gtk_widget_size_allocate\n");
  84   klass = EMACS_FIXED_GET_CLASS (widget);
  85   parent_class = g_type_class_peek_parent (klass);
  86   parent_class->size_allocate (widget, allocation);
  87
  88   priv = G_TYPE_INSTANCE_GET_PRIVATE (widget,
  89                                GTK_TYPE_FIXED,
  90                                struct GtkFixedPrivateL);
  91   //fixed->priv = G_TYPE_INSTANCE_GET_PRIVATE (fixed, GTK_TYPE_FIXED, GtkFixedPrivate);
  92   //then modify allocations
  93   /* gtk_container_foreach  (widget, */
  94   /*                         aloc_callback, */
  95   /*                         widget); */
  96
  97   //begin copy paste extravaganza!!!
  98
  99   //GtkFixed *fixed = GTK_FIXED (widget);
 100   //GtkFixedPrivate *priv = fixed->priv;
 101   GtkFixedChild *child;
 102   GtkAllocation child_allocation;
 103   GtkRequisition child_requisition;
 104   GList *children;
 105
 106
 107   gtk_widget_set_allocation (widget, allocation);
 108
 109   if (gtk_widget_get_has_window (widget))
 110     {
 111       if (gtk_widget_get_realized (widget))
 112         gdk_window_move_resize (gtk_widget_get_window (widget),
 113                                 allocation->x,
 114                                 allocation->y,
 115                                 allocation->width,
 116                                 allocation->height);
 117     }
 118
 119   for (children = priv->children;
 120        children;
 121        children = children->next)
 122     {
 123       child = children->data;
 124
 125       if (!gtk_widget_get_visible (child->widget))
 126         continue;
 127
 128       gtk_widget_get_preferred_size (child->widget, &child_requisition, NULL);
 129       child_allocation.x = child->x;
 130       child_allocation.y = child->y;
 131
 132       if (!gtk_widget_get_has_window (widget))
 133         {
 134           child_allocation.x += allocation->x;
 135           child_allocation.y += allocation->y;
 136         }
 137
 138       child_allocation.width = child_requisition.width;
 139       child_allocation.height = child_requisition.height;
 140
 141
 142
 143       struct xwidget_view* xv = (struct xwidget_viev*) g_object_get_data (G_OBJECT (child->widget), XG_XWIDGET_VIEW);
 144       //printf("aloc callback %d %s\n", xv, gtk_widget_get_name(child));
 145       if(xv){
 146         //gtk_widget_get_allocation(child, &child_allocation);
 147         child_allocation.width = xv->clip_right;
 148         child_allocation.height = xv->clip_bottom - xv->clip_top;
 149         //gtk_widget_size_allocate (child, &child_allocation);
 150         //TODO find a way to remove this feeble workaround
 151         printf(" allocation internal modification for xw %d  %d,%d\n",xv,        child_allocation.width,        child_allocation.height);
 152
 153       }
 154       gtk_widget_size_allocate (child->widget, &child_allocation);
 155
 156     }
 157
 158 }
 159
 160 #endif
 161
 162 static void
 163 emacs_fixed_class_init (EmacsFixedClass *klass)
 164 {
 165   GtkWidgetClass *widget_class;
 166   GtkFixedClass *fixed_class;
 167
 168   widget_class = (GtkWidgetClass*) klass;
 169   fixed_class = (GtkFixedClass*) klass;
 170
 171   widget_class->get_preferred_width = emacs_fixed_get_preferred_width;
 172   widget_class->get_preferred_height = emacs_fixed_get_preferred_height;
 173 #ifdef HAVE_XWIDGETS
 174   widget_class->size_allocate =  emacs_fixed_gtk_widget_size_allocate;
 175 #endif
 176   g_type_class_add_private (klass, sizeof (EmacsFixedPrivate));
 177 }
 178
 179 static GType
 180 emacs_fixed_child_type (GtkFixed *container)
 181 {
 182   return GTK_TYPE_WIDGET;
 183 }
 184
 185 static void
 186 emacs_fixed_init (EmacsFixed *fixed)
 187 {
 188   fixed->priv = G_TYPE_INSTANCE_GET_PRIVATE (fixed, EMACS_TYPE_FIXED,
 189                                              EmacsFixedPrivate);
 190   fixed->priv->f = 0;
 191 }
 192
 193 /**
 194  * emacs_fixed_new:
 195  *
 196  * Creates a new #EmacsFixed.
 197  *
 198  * Returns: a new #EmacsFixed.
 199  */
 200 GtkWidget*
 201 emacs_fixed_new (struct frame *f)
 202 {
 203   EmacsFixed *fixed = g_object_new (EMACS_TYPE_FIXED, NULL);
 204   EmacsFixedPrivate *priv = fixed->priv;
 205   priv->f = f;
 206   return GTK_WIDGET (fixed);
 207 }
 208
 209 static void
 210 emacs_fixed_get_preferred_width (GtkWidget *widget,
 211                                  gint      *minimum,
 212                                  gint      *natural)
 213 {
 214   EmacsFixed *fixed = EMACS_FIXED (widget);
 215   EmacsFixedPrivate *priv = fixed->priv;
 216   int w = priv->f->output_data.x->size_hints.min_width;
 217   if (minimum) *minimum = w;
 218   if (natural) *natural = w;
 219 }
 220
 221 static void
 222 emacs_fixed_get_preferred_height (GtkWidget *widget,
 223                                   gint      *minimum,
 224                                   gint      *natural)
 225 {
 226   EmacsFixed *fixed = EMACS_FIXED (widget);
 227   EmacsFixedPrivate *priv = fixed->priv;
 228   int h = priv->f->output_data.x->size_hints.min_height;
 229   if (minimum) *minimum = h;
 230   if (natural) *natural = h;
 231 }
 232
 233
 234 /* Override the X function so we can intercept Gtk+ 3 calls.
 235    Use our values for min_width/height so that KDE don't freak out
 236    (Bug#8919), and so users can resize our frames as they wish.  */
 237
 238 void
 239 XSetWMSizeHints(Display* d,
 240                 Window w,
 241                 XSizeHints* hints,
 242                 Atom prop)
 243 {
 244   struct x_display_info *dpyinfo = x_display_info_for_display (d);
 245   struct frame *f = x_top_window_to_frame (dpyinfo, w);
 246   long data[18];
 247   data[0] = hints->flags;
 248   data[1] = hints->x;
 249   data[2] = hints->y;
 250   data[3] = hints->width;
 251   data[4] = hints->height;
 252   data[5] = hints->min_width;
 253   data[6] = hints->min_height;
 254   data[7] = hints->max_width;
 255   data[8] = hints->max_height;
 256   data[9] = hints->width_inc;
 257   data[10] = hints->height_inc;
 258   data[11] = hints->min_aspect.x;
 259   data[12] = hints->min_aspect.y;
 260   data[13] = hints->max_aspect.x;
 261   data[14] = hints->max_aspect.y;
 262   data[15] = hints->base_width;
 263   data[16] = hints->base_height;
 264   data[17] = hints->win_gravity;
 265
 266   if ((hints->flags & PMinSize) && f)
 267     {
 268       int w = f->output_data.x->size_hints.min_width;
 269       int h = f->output_data.x->size_hints.min_height;
 270       data[5] = w;
 271       data[6] = h;
 272     }
 273
 274   XChangeProperty (d, w, prop, XA_WM_SIZE_HINTS, 32, PropModeReplace,
 275                    (unsigned char *) data, 18);
 276 }
 277
 278 /* Override this X11 function.
 279    This function is in the same X11 file as the one above.  So we must
 280    provide it also.  */
 281
 282 void
 283 XSetWMNormalHints (Display *d, Window w, XSizeHints *hints)
 284 {
 285   XSetWMSizeHints (d, w, hints, XA_WM_NORMAL_HINTS);
 286 }