app/tool.c

   1 /* Dia -- an diagram creation/manipulation program
   2  * Copyright (C) 1998 Alexander Larsson
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18 #include <config.h>
  19
  20 #include "tool.h"
  21 #include "create_object.h"
  22 #include "magnify.h"
  23 #include "modify_tool.h"
  24 #include "scroll_tool.h"
  25 #include "interface.h"
  26 #include "defaults.h"
  27
  28 Tool *active_tool = NULL;
  29 Tool *transient_tool = NULL;
  30 static GtkWidget *active_button = NULL;
  31 static GtkWidget *former_button = NULL;
  32
  33 void
  34 tool_select_former(void)
  35 {
  36   if (former_button) {
  37     gtk_signal_emit_by_name(GTK_OBJECT(former_button), "clicked",
  38                             GTK_BUTTON(former_button), NULL);
  39   }
  40 }
  41
  42 void
  43 tool_reset(void)
  44 {
  45   gtk_signal_emit_by_name(GTK_OBJECT(modify_tool_button), "clicked",
  46                           GTK_BUTTON(modify_tool_button), NULL);
  47 }
  48
  49 void
  50 tool_get(ToolState *state)
  51 {
  52   state->type = active_tool->type;
  53   state->button = active_button;
  54   if (state->type == CREATE_OBJECT_TOOL) {
  55     state->user_data = ((CreateObjectTool *)active_tool)->user_data;
  56     state->extra_data = ((CreateObjectTool *)active_tool)->objtype->name;
  57     state->invert_persistence = ((CreateObjectTool *)active_tool)->invert_persistence;
  58   }
  59   else
  60   {
  61     state->user_data = NULL;
  62     state->extra_data = NULL;
  63     state->invert_persistence = 0;
  64   }
  65 }
  66
  67 void
  68 tool_restore(const ToolState *state)
  69 {
  70   tool_select(state->type, state->extra_data, state->user_data, state->button,
  71               state->invert_persistence);
  72 }
  73
  74 void
  75 tool_free(Tool *tool)
  76 {
  77   switch(tool->type) {
  78   case MODIFY_TOOL:
  79     free_modify_tool(tool);
  80     break;
  81   case CREATE_OBJECT_TOOL:
  82     free_create_object_tool(tool);
  83     break;
  84   case MAGNIFY_TOOL:
  85     free_magnify_tool(tool);
  86     break;
  87   case SCROLL_TOOL:
  88     free_scroll_tool(tool);
  89     break;
  90   default:
  91     g_assert(0);
  92   }
  93 }
  94
  95 void
  96 tool_select(ToolType type, gpointer extra_data,
  97             gpointer user_data, GtkWidget *button,
  98             int invert_persistence)
  99 {
 100   if (button)
 101     former_button = active_button;
 102
 103   tool_free(active_tool);
 104   switch(type) {
 105   case MODIFY_TOOL:
 106     active_tool = create_modify_tool();
 107     break;
 108   case CREATE_OBJECT_TOOL:
 109     active_tool =
 110       create_create_object_tool(object_get_type((char *)extra_data),
 111                                 (void *) user_data, invert_persistence);
 112     break;
 113   case MAGNIFY_TOOL:
 114     active_tool = create_magnify_tool();
 115     break;
 116   case SCROLL_TOOL:
 117     active_tool = create_scroll_tool();
 118     break;
 119   default:
 120     g_assert(0);
 121   }
 122   if (button)
 123     active_button = button;
 124 }
 125
 126 void
 127 tool_options_dialog_show(ToolType type, gpointer extra_data,
 128                          gpointer user_data, GtkWidget *button,
 129                          int invert_persistence)
 130 {
 131   ObjectType *objtype;
 132
 133   if (active_tool->type != type)
 134     tool_select(type,extra_data,user_data,button,invert_persistence);
 135
 136   switch(type) {
 137   case MODIFY_TOOL:
 138       break;
 139   case CREATE_OBJECT_TOOL:
 140     objtype = object_get_type((char *)extra_data);
 141     defaults_show(objtype);
 142     break;
 143   case MAGNIFY_TOOL:
 144     break;
 145   case SCROLL_TOOL:
 146     break;
 147   }
 148 }