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