gschem/src/x_basic.c

   1 /* gEDA - GPL Electronic Design Automation
   2  * gschem - gEDA Schematic Capture
   3  * Copyright (C) 1998-2007 Ales Hvezda
   4  * Copyright (C) 1998-2007 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(GSCHEM_TOPLEVEL *w_current)
  37 {
  38   TOPLEVEL *toplevel = w_current->toplevel;
  39   if (!w_current->inside_redraw) {
  40     gdk_gc_set_foreground(
  41                           w_current->gc,
  42                           x_get_color(toplevel->background_color));
  43
  44     gdk_draw_rectangle(w_current->backingstore,
  45                        w_current->gc, TRUE, 0, 0,
  46                        w_current->win_width,
  47                        w_current->win_height);
  48     o_invalidate_all (w_current);
  49
  50     x_grid_draw(w_current);
  51
  52   }
  53
  54 }
  55
  56 /*! \todo Finish function documentation!!!
  57  *  \brief
  58  *  \par Function Description
  59  *
  60  */
  61 void x_hscrollbar_update(GSCHEM_TOPLEVEL *w_current)
  62 {
  63   TOPLEVEL *toplevel = w_current->toplevel;
  64   GtkAdjustment *hadjustment;
  65
  66   if (w_current->scrollbars_flag == FALSE) {
  67     return;
  68   }
  69
  70   if (w_current->h_scrollbar == NULL) {
  71     return;
  72   }
  73
  74   hadjustment = gtk_range_get_adjustment (GTK_RANGE (
  75                                                      w_current->h_scrollbar));
  76
  77   hadjustment->value = toplevel->page_current->left;
  78
  79   hadjustment->page_size = fabs(toplevel->page_current->right -
  80                                 toplevel->page_current->left);
  81
  82   hadjustment->page_increment = hadjustment->page_size - 100.0;
  83
  84 #if DEBUG
  85   printf("H %f %f\n", hadjustment->lower, hadjustment->upper);
  86   printf("Hp %f\n", hadjustment->page_size);
  87 #endif
  88
  89   gtk_signal_emit_by_name(GTK_OBJECT(hadjustment), "changed");
  90   gtk_signal_emit_by_name(GTK_OBJECT(hadjustment), "value_changed");
  91 }
  92
  93 /*! \todo Finish function documentation!!!
  94  *  \brief
  95  *  \par Function Description
  96  *
  97  */
  98 void x_vscrollbar_update(GSCHEM_TOPLEVEL *w_current)
  99 {
 100   TOPLEVEL *toplevel = w_current->toplevel;
 101   GtkAdjustment *vadjustment;
 102
 103   if (w_current->scrollbars_flag == FALSE) {
 104     return;
 105   }
 106
 107   if (w_current->v_scrollbar == NULL) {
 108     return;
 109   }
 110
 111   vadjustment =
 112   gtk_range_get_adjustment(GTK_RANGE(w_current->v_scrollbar));
 113
 114   vadjustment->page_size = fabs(toplevel->page_current->bottom -
 115                                 toplevel->page_current->top);
 116
 117   vadjustment->page_increment = vadjustment->page_size - 100.0;
 118
 119   vadjustment->value =
 120   toplevel->init_bottom - toplevel->page_current->bottom;
 121
 122 #if DEBUG
 123   printf("V %f %f\n", vadjustment->lower, vadjustment->upper);
 124   printf("Vp %f\n", vadjustment->page_size);
 125 #endif
 126
 127   gtk_signal_emit_by_name(GTK_OBJECT(vadjustment), "changed");
 128   gtk_signal_emit_by_name(GTK_OBJECT(vadjustment), "value_changed");
 129 }
 130
 131 /*! \todo Finish function documentation!!!
 132  *  \brief
 133  *  \par Function Description
 134  *
 135  */
 136 void x_scrollbars_update(GSCHEM_TOPLEVEL *w_current)
 137 {
 138   TOPLEVEL *toplevel = w_current->toplevel;
 139   if (w_current->scrollbars_flag == FALSE) {
 140     return;
 141   }
 142
 143   toplevel->DONT_REDRAW = 1;
 144   x_hscrollbar_update(w_current);
 145   x_vscrollbar_update(w_current);
 146   toplevel->DONT_REDRAW = 0;
 147 }
 148
 149
 150 /*! \todo Finish function documentation!!!
 151  *  \brief
 152  *  \par Function Description
 153  *
 154  */
 155 void x_basic_warp_cursor (GtkWidget* widget, gint x, gint y)
 156 {
 157   GdkScreen *screen;
 158   GdkDisplay *display;
 159   int window_x, window_y;
 160
 161   gdk_window_get_origin (widget->window, &window_x, &window_y);
 162
 163   screen = gtk_widget_get_screen (widget);
 164   display = gdk_screen_get_display (screen);
 165
 166   gdk_display_warp_pointer (display, screen, window_x + x, window_y + y);
 167 }