gimp/plug-ins/gimpressionist/paper.c

#include "config.h"

#include <string.h>

#ifdef __GNUC__
#warning GTK_DISABLE_DEPRECATED
#endif
#undef GTK_DISABLE_DEPRECATED

#include <gtk/gtk.h>

#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>

#include "gimpressionist.h"
#include "ppmtool.h"
#include "paper.h"

#include "libgimp/stdplugins-intl.h"


static GtkWidget *paper_preview = NULL;
static GtkWidget *paper_invert = NULL;
static GtkWidget *paper_list = NULL;
static GtkObject *paper_relief_adjust = NULL;
static GtkObject *paper_scale_adjust = NULL;
static GtkWidget *paper_overlay = NULL;

static void paper_update_preview(void)
{
  gint    i, j;
  guchar  buf[100];
  gdouble sc;
  ppm_t   p = {0,0,NULL};

  ppm_load(pcvals.selectedpaper, &p);
  sc = p.width > p.height ? p.width : p.height;
  sc = 100.0 / sc;
  resize(&p, p.width*sc,p.height*sc);
  for (i = 0; i < 100; i++) {
    int k = i * p.width * 3;
    memset(buf, 0, 100);
    if(i < p.height) {
      for(j = 0; j < p.width; j++)
        buf[j] = p.col[k + j * 3];
      if (GTK_TOGGLE_BUTTON(paper_invert)->active)
        for (j = 0; j < p.width; j++)
          buf[j] = 255 - buf[j];
    }
    gtk_preview_draw_row (GTK_PREVIEW (paper_preview), buf, 0, i, 100);
  }
  ppm_kill(&p);

  gtk_widget_queue_draw (paper_preview);
}

static void paper_select(GtkTreeSelection *selection, gpointer data)
{
  GtkTreeIter   iter;
  GtkTreeModel *model;

  if (gtk_tree_selection_get_selected (selection, &model, &iter))
    {
      gchar *paper;

      gtk_tree_model_get (model, &iter, 0, &paper, -1);

      if (paper)
        {
          gchar *fname = g_build_filename ("Paper", paper, NULL);

          g_strlcpy (pcvals.selectedpaper,
                     fname, sizeof (pcvals.selectedpaper));

          paper_update_preview ();

          g_free (fname);
          g_free (paper);
        }
    }
}

void paper_restore(void)
{
  reselect(paper_list, pcvals.selectedpaper);
  gtk_adjustment_set_value(GTK_ADJUSTMENT(paper_relief_adjust), pcvals.paperrelief);
  gtk_adjustment_set_value(GTK_ADJUSTMENT(paper_scale_adjust), pcvals.paperscale);
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(paper_invert), pcvals.paper_invert);
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(paper_overlay), pcvals.paper_overlay);
}

void paper_store(void)
{
  pcvals.paper_invert = GTK_TOGGLE_BUTTON(paper_invert)->active;
  pcvals.paper_invert = GTK_TOGGLE_BUTTON(paper_invert)->active;
  pcvals.paper_overlay = GTK_TOGGLE_BUTTON(paper_overlay)->active;
}

void create_paperpage(GtkNotebook *notebook)
{
  GtkWidget *box1, *thispage, *box2;
  GtkWidget *label, *tmpw, *table;
  GtkWidget *view;
  GtkWidget *frame;
  GtkTreeSelection *selection;
  GtkTreeIter iter;
  GtkListStore *paper_store_list;

  label = gtk_label_new_with_mnemonic (_("P_aper"));

  thispage = gtk_vbox_new(FALSE, 12);
  gtk_container_set_border_width (GTK_CONTAINER (thispage), 12);
  gtk_widget_show(thispage);

  box1 = gtk_hbox_new (FALSE, 12);
  gtk_box_pack_start(GTK_BOX(thispage), box1, TRUE, TRUE, 0);
  gtk_widget_show (box1);

  paper_list = view = create_one_column_list (box1, paper_select);
  paper_store_list = GTK_LIST_STORE(gtk_tree_view_get_model (GTK_TREE_VIEW (view)));
  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (view));

  box2 = gtk_vbox_new (FALSE, 12);
  gtk_box_pack_start(GTK_BOX(box1), box2, FALSE, FALSE, 0);
  gtk_widget_show (box2);

  frame = gtk_frame_new (NULL);
  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
  gtk_box_pack_start(GTK_BOX (box2), frame, FALSE, FALSE, 0);
  gtk_widget_show (frame);

  paper_preview = tmpw = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
  gtk_preview_size(GTK_PREVIEW (tmpw), 100, 100);
  gtk_container_add (GTK_CONTAINER (frame), tmpw);
  gtk_widget_show(tmpw);

  paper_invert = tmpw = gtk_check_button_new_with_mnemonic( _("_Invert"));
  gtk_box_pack_start (GTK_BOX (box2), tmpw, FALSE, FALSE, 0);
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tmpw), FALSE);
  gtk_widget_show (tmpw);
  g_signal_connect_swapped (tmpw, "clicked",
			    G_CALLBACK(paper_select), selection);
  gimp_help_set_help_data (tmpw, _("Inverts the Papers texture"), NULL);
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tmpw), pcvals.paper_invert);

  paper_overlay = tmpw = gtk_check_button_new_with_mnemonic( _("O_verlay"));
  gtk_box_pack_start (GTK_BOX (box2), tmpw, FALSE, FALSE, 0);
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tmpw), FALSE);
  gtk_widget_show (tmpw);
  gimp_help_set_help_data
    (tmpw, _("Applies the paper as it is (without embossing it)"), NULL);
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tmpw), pcvals.paper_overlay);

  table = gtk_table_new (2, 3, FALSE);
  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
  gtk_table_set_row_spacings (GTK_TABLE (table), 6);
  gtk_box_pack_start(GTK_BOX(thispage), table, FALSE, FALSE, 0);
  gtk_widget_show (table);

  paper_scale_adjust =
    gimp_scale_entry_new (GTK_TABLE(table), 0, 0,
			  _("Scale:"),
			  150, -1, pcvals.paperscale,
			  3.0, 150.0, 1.0, 10.0, 1,
			  TRUE, 0, 0,
			  _("Specifies the scale of the texture (in percent of original file)"),
			  NULL);
  g_signal_connect (paper_scale_adjust, "value_changed",
                    G_CALLBACK (gimp_double_adjustment_update),
                    &pcvals.paperscale);

  paper_relief_adjust =
    gimp_scale_entry_new (GTK_TABLE(table), 0, 1,
			  _("Relief:"),
			  150, -1, pcvals.paperrelief,
			  0.0, 100.0, 1.0, 10.0, 1,
			  TRUE, 0, 0,
			  _("Specifies the amount of embossing to apply to the image (in percent)"),
			  NULL);
  g_signal_connect (paper_relief_adjust, "value_changed",
                    G_CALLBACK (gimp_double_adjustment_update),
                    &pcvals.paperrelief);


  if (gtk_tree_model_get_iter_first (GTK_TREE_MODEL(paper_store_list), &iter))
    gtk_tree_selection_select_iter (selection, &iter);

  paper_select(selection, NULL);
  readdirintolist("Paper", view, pcvals.selectedpaper);
  gtk_notebook_append_page_menu (notebook, thispage, label, NULL);
}