gschem/src/x_basic.c

   1 /* gEDA - GPL Electronic Design Automation
   2  * gschem - gEDA Schematic Capture
   3  * Copyright (C) 1998-2010 Ales Hvezda
   4  * Copyright (C) 1998-2010 gEDA Contributors (see ChangeLog for details)
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
  19  */
  20 #include <config.h>
  21
  22 #include <stdio.h>
  23 #include <math.h>
  24
  25 #include "gschem.h"
  26
  27 #ifdef HAVE_LIBDMALLOC
  28 #include <dmalloc.h>
  29 #endif
  30
  31 /*! \todo Finish function documentation!!!
  32  *  \brief
  33  *  \par Function Description
  34  *
  35  */
  36 void x_repaint_background_region (GSCHEM_TOPLEVEL *w_current,
  37                                   int x, int y, int width, int height)
  38 {
  39   TOPLEVEL *toplevel = w_current->toplevel;
  40
  41   gdk_gc_set_foreground (w_current->gc,
  42                          x_get_color (toplevel->background_color));
  43
  44   gdk_draw_rectangle (w_current->drawable,
  45                       w_current->gc, TRUE, x, y, width, height);
  46
  47   x_grid_draw_region (w_current, x, y, width, height);
  48 }
  49
  50 /*! \todo Finish function documentation!!!
  51  *  \brief
  52  *  \par Function Description
  53  *
  54  */
  55 void x_hscrollbar_set_ranges(GSCHEM_TOPLEVEL *w_current)
  56 {
  57   TOPLEVEL *toplevel = w_current->toplevel;
  58         GtkAdjustment        *hadjustment;
  59
  60         if (w_current->scrollbars_flag == FALSE) {
  61                 return;
  62         }
  63
  64         hadjustment =
  65                 gtk_range_get_adjustment(GTK_RANGE(w_current->h_scrollbar));
  66
  67         hadjustment->lower = toplevel->init_left;
  68         hadjustment->upper = toplevel->init_right;
  69
  70 }
  71
  72 /*! \todo Finish function documentation!!!
  73  *  \brief
  74  *  \par Function Description
  75  *
  76  */
  77 void x_hscrollbar_update(GSCHEM_TOPLEVEL *w_current)
  78 {
  79   TOPLEVEL *toplevel = w_current->toplevel;
  80   GtkAdjustment *hadjustment;
  81
  82   if (w_current->scrollbars_flag == FALSE) {
  83     return;
  84   }
  85
  86   if (w_current->h_scrollbar == NULL) {
  87     return;
  88   }
  89
  90   hadjustment = gtk_range_get_adjustment (GTK_RANGE (
  91                                                      w_current->h_scrollbar));
  92
  93   hadjustment->value = toplevel->page_current->left;
  94
  95   hadjustment->page_size = fabs(toplevel->page_current->right -
  96                                 toplevel->page_current->left);
  97
  98   hadjustment->page_increment = hadjustment->page_size - 100.0;
  99
 100 #if DEBUG
 101   printf("H %f %f\n", hadjustment->lower, hadjustment->upper);
 102   printf("Hp %f\n", hadjustment->page_size);
 103 #endif
 104
 105   gtk_signal_emit_by_name(GTK_OBJECT(hadjustment), "changed");
 106   gtk_signal_emit_by_name(GTK_OBJECT(hadjustment), "value_changed");
 107 }
 108
 109 /*! \todo Finish function documentation!!!
 110  *  \brief
 111  *  \par Function Description
 112  *
 113  */
 114 void x_vscrollbar_set_ranges(GSCHEM_TOPLEVEL *w_current)
 115 {
 116   TOPLEVEL *toplevel = w_current->toplevel;
 117   GtkAdjustment *vadjustment;
 118
 119   if (w_current->scrollbars_flag == FALSE) {
 120     return;
 121   }
 122
 123   vadjustment =
 124   gtk_range_get_adjustment(GTK_RANGE(w_current->v_scrollbar));
 125
 126   vadjustment->lower = toplevel->init_top;
 127   vadjustment->upper = toplevel->init_bottom;
 128 }
 129
 130 /*! \todo Finish function documentation!!!
 131  *  \brief
 132  *  \par Function Description
 133  *
 134  */
 135 void x_vscrollbar_update(GSCHEM_TOPLEVEL *w_current)
 136 {
 137   TOPLEVEL *toplevel = w_current->toplevel;
 138   GtkAdjustment *vadjustment;
 139
 140   if (w_current->scrollbars_flag == FALSE) {
 141     return;
 142   }
 143
 144   if (w_current->v_scrollbar == NULL) {
 145     return;
 146   }
 147
 148   vadjustment =
 149   gtk_range_get_adjustment(GTK_RANGE(w_current->v_scrollbar));
 150
 151   vadjustment->page_size = fabs(toplevel->page_current->bottom -
 152                                 toplevel->page_current->top);
 153
 154   vadjustment->page_increment = vadjustment->page_size - 100.0;
 155
 156   vadjustment->value =
 157   toplevel->init_bottom - toplevel->page_current->bottom;
 158
 159 #if DEBUG
 160   printf("V %f %f\n", vadjustment->lower, vadjustment->upper);
 161   printf("Vp %f\n", vadjustment->page_size);
 162 #endif
 163
 164   gtk_signal_emit_by_name(GTK_OBJECT(vadjustment), "changed");
 165   gtk_signal_emit_by_name(GTK_OBJECT(vadjustment), "value_changed");
 166 }
 167
 168 /*! \todo Finish function documentation!!!
 169  *  \brief
 170  *  \par Function Description
 171  *
 172  */
 173 void x_scrollbars_update(GSCHEM_TOPLEVEL *w_current)
 174 {
 175   TOPLEVEL *toplevel = w_current->toplevel;
 176   if (w_current->scrollbars_flag == FALSE) {
 177     return;
 178   }
 179
 180   toplevel->DONT_REDRAW = 1;
 181   x_hscrollbar_update(w_current);
 182   x_vscrollbar_update(w_current);
 183   toplevel->DONT_REDRAW = 0;
 184 }
 185
 186
 187 /*! \todo Finish function documentation!!!
 188  *  \brief
 189  *  \par Function Description
 190  *
 191  */
 192 void x_basic_warp_cursor (GtkWidget* widget, gint x, gint y)
 193 {
 194   GdkScreen *screen;
 195   GdkDisplay *display;
 196   int window_x, window_y;
 197
 198   gdk_window_get_origin (widget->window, &window_x, &window_y);
 199
 200   screen = gtk_widget_get_screen (widget);
 201   display = gdk_screen_get_display (screen);
 202
 203   gdk_display_warp_pointer (display, screen, window_x + x, window_y + y);
 204 }