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gimp/app/tools/text_tool.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "gdk/gdkkeysyms.h"
#include "appenv.h"
#include "actionarea.h"
#include "buildmenu.h"
#include "colormaps.h"
#include "drawable.h"
#include "edit_selection.h"
#include "errors.h"
#include "floating_sel.h"
#include "gimage_mask.h"
#include "gdisplay.h"
#include "general.h"
#include "global_edit.h"
#include "interface.h"
#include "palette.h"
#include "selection.h"
#include "text_tool.h"
#include "tools.h"
#include "undo.h"
#define FONT_LIST_WIDTH 125
#define FONT_LIST_HEIGHT 200
#define PIXELS 0
#define POINTS 1
#define FOUNDRY 0
#define FAMILY 1
#define WEIGHT 2
#define SLANT 3
#define SET_WIDTH 4
#define SPACING 10
#define SUPERSAMPLE 3
typedef struct _TextTool TextTool;
struct _TextTool
{
GtkWidget *shell;
GtkWidget *main_vbox;
GtkWidget *font_list;
GtkWidget *size_menu;
GtkWidget *size_text;
GtkWidget *border_text;
GtkWidget *text_frame;
GtkWidget *the_text;
GtkWidget *menus[5];
GtkWidget *option_menus[5];
GtkWidget **foundry_items;
GtkWidget **weight_items;
GtkWidget **slant_items;
GtkWidget **set_width_items;
GtkWidget **spacing_items;
GtkWidget *antialias_toggle;
GdkFont *font;
int click_x;
int click_y;
int font_index;
int size_type;
int antialias;
int foundry;
int weight;
int slant;
int set_width;
int spacing;
void *gdisp_ptr;
};
typedef struct _FontInfo FontInfo;
struct _FontInfo
{
char *family; /* The font family this info struct describes. */
int *foundries; /* An array of valid foundries. */
int *weights; /* An array of valid weights. */
int *slants; /* An array of valid slants. */
int *set_widths; /* An array of valid set widths. */
int *spacings; /* An array of valid spacings */
int **combos; /* An array of valid combinations of the above 5 items */
int ncombos; /* The number of elements in the "combos" array */
link_ptr fontnames; /* An list of valid fontnames.
* This is used to make sure a family/foundry/weight/slant/set_width
* combination is valid.
*/
};
static void text_button_press (Tool *, GdkEventButton *, gpointer);
static void text_button_release (Tool *, GdkEventButton *, gpointer);
static void text_motion (Tool *, GdkEventMotion *, gpointer);
static void text_cursor_update (Tool *, GdkEventMotion *, gpointer);
static void text_control (Tool *, int, gpointer);
static void text_resize_text_widget (TextTool *);
static void text_create_dialog (TextTool *);
static void text_ok_callback (GtkWidget *, gpointer);
static void text_cancel_callback (GtkWidget *, gpointer);
static gint text_delete_callback (GtkWidget *, GdkEvent *, gpointer);
static void text_pixels_callback (GtkWidget *, gpointer);
static void text_points_callback (GtkWidget *, gpointer);
static void text_foundry_callback (GtkWidget *, gpointer);
static void text_weight_callback (GtkWidget *, gpointer);
static void text_slant_callback (GtkWidget *, gpointer);
static void text_set_width_callback (GtkWidget *, gpointer);
static void text_spacing_callback (GtkWidget *, gpointer);
static gint text_size_key_function (GtkWidget *, GdkEventKey *, gpointer);
static void text_antialias_update (GtkWidget *, gpointer);
static void text_font_item_update (GtkWidget *, gpointer);
static void text_validate_combo (TextTool *, int);
static void text_get_fonts (void);
static void text_insert_font (FontInfo **, int *, char *);
static link_ptr text_insert_field (link_ptr, char *, int);
static char* text_get_field (char *, int);
static int text_field_to_index (char **, int, char *);
static int text_is_xlfd_font_name (char *);
static int text_get_xlfd (double, int, char *, char *, char *,
char *, char *, char *, char *);
static int text_load_font (TextTool *);
static void text_init_render (TextTool *);
static void text_gdk_image_to_region (GdkImage *, int, PixelRegion *);
static int text_get_extents (char *, char *, int *, int *, int *, int *);
static Layer * text_render (GImage *, int, int, int, char *, char *, int, int);
static Argument * text_tool_invoker (Argument *);
static Argument * text_tool_get_extents_invoker (Argument *);
static ActionAreaItem action_items[] =
{
{ "OK", text_ok_callback, NULL, NULL },
{ "Cancel", text_cancel_callback, NULL, NULL },
};
static MenuItem size_metric_items[] =
{
{ "Pixels", 0, 0, text_pixels_callback, (gpointer) PIXELS, NULL, NULL },
{ "Points", 0, 0, text_points_callback, (gpointer) POINTS, NULL, NULL },
{ NULL, 0, 0, NULL, NULL, NULL, NULL }
};
static TextTool *the_text_tool = NULL;
static FontInfo **font_info;
static int nfonts = -1;
static link_ptr foundries = NULL;
static link_ptr weights = NULL;
static link_ptr slants = NULL;
static link_ptr set_widths = NULL;
static link_ptr spacings = NULL;
static char **foundry_array = NULL;
static char **weight_array = NULL;
static char **slant_array = NULL;
static char **set_width_array = NULL;
static char **spacing_array = NULL;
static int nfoundries = 0;
static int nweights = 0;
static int nslants = 0;
static int nset_widths = 0;
static int nspacings = 0;
static void *text_options = NULL;
Tool*
tools_new_text ()
{
Tool * tool;
if (! text_options)
text_options = tools_register_no_options (TEXT, "Text Tool Options");
tool = g_malloc (sizeof (Tool));
if (!the_text_tool)
{
the_text_tool = g_malloc (sizeof (TextTool));
the_text_tool->shell = NULL;
the_text_tool->font_list = NULL;
the_text_tool->size_menu = NULL;
the_text_tool->size_text = NULL;
the_text_tool->border_text = NULL;
the_text_tool->text_frame = NULL;
the_text_tool->the_text = NULL;
the_text_tool->font = NULL;
the_text_tool->font_index = 0;
the_text_tool->size_type = PIXELS;
the_text_tool->antialias = 1;
the_text_tool->foundry = 0;
the_text_tool->weight = 0;
the_text_tool->slant = 0;
the_text_tool->set_width = 0;
the_text_tool->spacing = 0;
}
tool->type = TEXT;
tool->state = INACTIVE;
tool->scroll_lock = 1; /* Do not allow scrolling */
tool->auto_snap_to = TRUE;
tool->private = (void *) the_text_tool;
tool->button_press_func = text_button_press;
tool->button_release_func = text_button_release;
tool->motion_func = text_motion;
tool->arrow_keys_func = standard_arrow_keys_func;
tool->cursor_update_func = text_cursor_update;
tool->control_func = text_control;
return tool;
}
void
tools_free_text (Tool *tool)
{
}
static void
text_button_press (Tool *tool,
GdkEventButton *bevent,
gpointer gdisp_ptr)
{
GDisplay *gdisp;
Layer *layer;
TextTool *text_tool;
gdisp = gdisp_ptr;
text_tool = tool->private;
text_tool->gdisp_ptr = gdisp_ptr;
tool->state = ACTIVE;
tool->gdisp_ptr = gdisp_ptr;
gdisplay_untransform_coords (gdisp, bevent->x, bevent->y,
&text_tool->click_x, &text_tool->click_y,
TRUE, 0);
if ((layer = gimage_pick_correlate_layer (gdisp->gimage, text_tool->click_x, text_tool->click_y)))
/* If there is a floating selection, and this aint it, use the move tool */
if (layer_is_floating_sel (layer))
{
init_edit_selection (tool, gdisp_ptr, bevent, LayerTranslate);
return;
}
if (nfonts == -1)
{
text_get_fonts ();
if (nfonts == 0)
{
message_box ("Note: No fonts found. Text tool not available.",
NULL, NULL);
nfonts = -1;
return;
}
}
if (!text_tool->shell)
text_create_dialog (text_tool);
switch (gimage_base_type (gdisp->gimage))
{
case RGB:
case GRAY:
if (!GTK_WIDGET_VISIBLE (text_tool->antialias_toggle))
gtk_widget_show (text_tool->antialias_toggle);
break;
case INDEXED:
if (GTK_WIDGET_VISIBLE (text_tool->antialias_toggle))
gtk_widget_hide (text_tool->antialias_toggle);
break;
}
if (!GTK_WIDGET_VISIBLE (text_tool->shell))
gtk_widget_show (text_tool->shell);
}
static void
text_button_release (Tool *tool,
GdkEventButton *bevent,
gpointer gdisp_ptr)
{
tool->state = INACTIVE;
}
static void
text_motion (Tool *tool,
GdkEventMotion *mevent,
gpointer gdisp_ptr)
{
}
static void
text_cursor_update (Tool *tool,
GdkEventMotion *mevent,
gpointer gdisp_ptr)
{
GDisplay *gdisp;
Layer *layer;
int x, y;
gdisp = (GDisplay *) gdisp_ptr;
gdisplay_untransform_coords (gdisp, mevent->x, mevent->y, &x, &y, FALSE, FALSE);
if ((layer = gimage_pick_correlate_layer (gdisp->gimage, x, y)))
/* if there is a floating selection, and this aint it... */
if (layer_is_floating_sel (layer))
{
gdisplay_install_tool_cursor (gdisp, GDK_FLEUR);
return;
}
gdisplay_install_tool_cursor (gdisp, GDK_XTERM);
}
static void
text_control (Tool *tool,
int action,
gpointer gdisp_ptr)
{
switch (action)
{
case PAUSE :
break;
case RESUME :
break;
case HALT :
if (the_text_tool->shell != NULL && GTK_WIDGET_VISIBLE (the_text_tool->shell))
gtk_widget_hide (the_text_tool->shell);
break;
}
}
static void
text_resize_text_widget (TextTool *text_tool)
{
GtkStyle *style;
style = gtk_style_new ();
gdk_font_unref (style->font);
style->font = text_tool->font;
gdk_font_ref (style->font);
gtk_widget_set_style (text_tool->the_text, style);
}
static void
text_create_dialog (TextTool *text_tool)
{
GtkWidget *top_hbox;
GtkWidget *right_vbox;
GtkWidget *text_hbox;
GtkWidget *list_box;
GtkWidget *list_item;
GtkWidget *size_opt_menu;
GtkWidget *border_label;
GtkWidget *menu_table;
GtkWidget *menu_label;
GtkWidget **menu_items[5];
GtkWidget *alignment;
int nmenu_items[5];
char *menu_strs[5];
char **menu_item_strs[5];
int *font_infos[5];
MenuItemCallback menu_callbacks[5];
int i, j;
/* Create the shell and vertical & horizontal boxes */
text_tool->shell = gtk_dialog_new ();
gtk_window_set_title (GTK_WINDOW (text_tool->shell), "Text Tool");
gtk_window_set_policy (GTK_WINDOW (text_tool->shell), FALSE, TRUE, TRUE);
gtk_window_position (GTK_WINDOW (text_tool->shell), GTK_WIN_POS_MOUSE);
/* handle the wm close signal */
gtk_signal_connect (GTK_OBJECT (text_tool->shell), "delete_event",
GTK_SIGNAL_FUNC (text_delete_callback),
text_tool);
text_tool->main_vbox = gtk_vbox_new (FALSE, 2);
gtk_container_border_width (GTK_CONTAINER (text_tool->main_vbox), 2);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (text_tool->shell)->vbox), text_tool->main_vbox, TRUE, TRUE, 0);
top_hbox = gtk_hbox_new (FALSE, 1);
gtk_box_pack_start (GTK_BOX (text_tool->main_vbox), top_hbox, TRUE, TRUE, 0);
/* Create the font listbox */
list_box = gtk_scrolled_window_new (NULL, NULL);
gtk_widget_set_usize (list_box, FONT_LIST_WIDTH, FONT_LIST_HEIGHT);
gtk_box_pack_start (GTK_BOX (top_hbox), list_box, TRUE, TRUE, 0);
text_tool->font_list = gtk_list_new ();
gtk_container_add (GTK_CONTAINER (list_box), text_tool->font_list);
gtk_list_set_selection_mode (GTK_LIST (text_tool->font_list), GTK_SELECTION_BROWSE);
for (i = 0; i < nfonts; i++)
{
list_item = gtk_list_item_new_with_label (font_info[i]->family);
gtk_container_add (GTK_CONTAINER (text_tool->font_list), list_item);
gtk_signal_connect (GTK_OBJECT (list_item), "select",
(GtkSignalFunc) text_font_item_update,
(gpointer) ((long) i));
gtk_widget_show (list_item);
}
gtk_widget_show (text_tool->font_list);
/* Create the box to hold options */
right_vbox = gtk_vbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (top_hbox), right_vbox, TRUE, TRUE, 2);
/* Create the text hbox, size text, and fonts size metric option menu */
text_hbox = gtk_hbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (right_vbox), text_hbox, FALSE, FALSE, 0);
text_tool->size_text = gtk_entry_new ();
gtk_widget_set_usize (text_tool->size_text, 75, 0);
gtk_entry_set_text (GTK_ENTRY (text_tool->size_text), "50");
gtk_signal_connect (GTK_OBJECT (text_tool->size_text), "key_press_event",
(GtkSignalFunc) text_size_key_function,
text_tool);
gtk_box_pack_start (GTK_BOX (text_hbox), text_tool->size_text, TRUE, TRUE, 0);
/* Create the size menu */
size_metric_items[0].user_data = text_tool;
size_metric_items[1].user_data = text_tool;
text_tool->size_menu = build_menu (size_metric_items, NULL);
size_opt_menu = gtk_option_menu_new ();
gtk_box_pack_start (GTK_BOX (text_hbox), size_opt_menu, FALSE, FALSE, 0);
/* create the text entry widget */
text_tool->text_frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (text_tool->text_frame), GTK_SHADOW_NONE);
gtk_box_pack_start (GTK_BOX (text_tool->main_vbox), text_tool->text_frame, FALSE, FALSE, 2);
text_tool->the_text = gtk_entry_new ();
gtk_container_add (GTK_CONTAINER (text_tool->text_frame), text_tool->the_text);
/* create the antialiasing toggle button */
text_tool->antialias_toggle = gtk_check_button_new_with_label ("Antialiasing");
gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (text_tool->antialias_toggle), text_tool->antialias);
gtk_box_pack_start (GTK_BOX (right_vbox), text_tool->antialias_toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (text_tool->antialias_toggle), "toggled",
(GtkSignalFunc) text_antialias_update,
text_tool);
/* Allocate the arrays for the foundry, weight, slant, set_width and spacing menu items */
text_tool->foundry_items = (GtkWidget **) g_malloc (sizeof (GtkWidget *) * nfoundries);
text_tool->weight_items = (GtkWidget **) g_malloc (sizeof (GtkWidget *) * nweights);
text_tool->slant_items = (GtkWidget **) g_malloc (sizeof (GtkWidget *) * nslants);
text_tool->set_width_items = (GtkWidget **) g_malloc (sizeof (GtkWidget *) * nset_widths);
text_tool->spacing_items = (GtkWidget **) g_malloc (sizeof (GtkWidget *) * nspacings);
menu_items[0] = text_tool->foundry_items;
menu_items[1] = text_tool->weight_items;
menu_items[2] = text_tool->slant_items;
menu_items[3] = text_tool->set_width_items;
menu_items[4] = text_tool->spacing_items;
nmenu_items[0] = nfoundries;
nmenu_items[1] = nweights;
nmenu_items[2] = nslants;
nmenu_items[3] = nset_widths;
nmenu_items[4] = nspacings;
menu_strs[0] = "Foundry";
menu_strs[1] = "Weight";
menu_strs[2] = "Slant";
menu_strs[3] = "Set width";
menu_strs[4] = "Spacing";
menu_item_strs[0] = foundry_array;
menu_item_strs[1] = weight_array;
menu_item_strs[2] = slant_array;
menu_item_strs[3] = set_width_array;
menu_item_strs[4] = spacing_array;
menu_callbacks[0] = text_foundry_callback;
menu_callbacks[1] = text_weight_callback;
menu_callbacks[2] = text_slant_callback;
menu_callbacks[3] = text_set_width_callback;
menu_callbacks[4] = text_spacing_callback;
font_infos[0] = font_info[0]->foundries;
font_infos[1] = font_info[0]->weights;
font_infos[2] = font_info[0]->slants;
font_infos[3] = font_info[0]->set_widths;
font_infos[4] = font_info[0]->spacings;
menu_table = gtk_table_new (6, 2, FALSE);
gtk_box_pack_start (GTK_BOX (right_vbox), menu_table, TRUE, TRUE, 0);
/* Create the other menus */
for (i = 0; i < 5; i++)
{
menu_label = gtk_label_new (menu_strs[i]);
gtk_misc_set_alignment (GTK_MISC (menu_label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (menu_table), menu_label, 0, 1, i, i + 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 1);
alignment = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);
gtk_table_attach (GTK_TABLE (menu_table), alignment, 1, 2, i, i + 1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL, GTK_SHRINK, 1, 1);
text_tool->menus[i] = gtk_menu_new ();
for (j = 0; j < nmenu_items[i]; j++)
{
menu_items[i][j] = gtk_menu_item_new_with_label (menu_item_strs[i][j]);
gtk_widget_set_sensitive (menu_items[i][j], font_infos[i][j]);
gtk_container_add (GTK_CONTAINER (text_tool->menus[i]), menu_items[i][j]);
gtk_signal_connect (GTK_OBJECT (menu_items[i][j]), "activate",
(GtkSignalFunc) menu_callbacks[i],
(gpointer) ((long) j));
gtk_widget_show (menu_items[i][j]);
}
text_tool->option_menus[i] = gtk_option_menu_new ();
gtk_container_add (GTK_CONTAINER (alignment), text_tool->option_menus[i]);
gtk_widget_show (menu_label);
gtk_widget_show (text_tool->option_menus[i]);
gtk_widget_show (alignment);
gtk_option_menu_set_menu (GTK_OPTION_MENU (text_tool->option_menus[i]), text_tool->menus[i]);
}
/* Create the border text hbox, border text, and label */
border_label = gtk_label_new ("Border");
gtk_misc_set_alignment (GTK_MISC (border_label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (menu_table), border_label, 0, 1, i, i + 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 1);
alignment = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);
gtk_table_attach (GTK_TABLE (menu_table), alignment, 1, 2, i, i + 1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL, GTK_SHRINK, 1, 1);
text_tool->border_text = gtk_entry_new ();
gtk_widget_set_usize (text_tool->border_text, 75, 25);
gtk_entry_set_text (GTK_ENTRY (text_tool->border_text), "0");
gtk_container_add (GTK_CONTAINER (alignment), text_tool->border_text);
gtk_widget_show (alignment);
/* Create the action area */
action_items[0].user_data = text_tool;
action_items[1].user_data = text_tool;
build_action_area (GTK_DIALOG (text_tool->shell), action_items, 2, 0);
/* Show the widgets */
gtk_widget_show (menu_table);
gtk_widget_show (text_tool->antialias_toggle);
gtk_widget_show (text_tool->size_text);
gtk_widget_show (border_label);
gtk_widget_show (text_tool->border_text);
gtk_widget_show (size_opt_menu);
gtk_widget_show (text_hbox);
gtk_widget_show (list_box);
gtk_widget_show (right_vbox);
gtk_widget_show (top_hbox);
gtk_widget_show (text_tool->the_text);
gtk_widget_show (text_tool->text_frame);
gtk_widget_show (text_tool->main_vbox);
/* Post initialization */
gtk_option_menu_set_menu (GTK_OPTION_MENU (size_opt_menu), text_tool->size_menu);
if (nfonts)
text_load_font (text_tool);
/* Show the shell */
gtk_widget_show (text_tool->shell);
}
static void
text_ok_callback (GtkWidget *w,
gpointer client_data)
{
TextTool * text_tool;
text_tool = (TextTool *) client_data;
if (GTK_WIDGET_VISIBLE (text_tool->shell))
gtk_widget_hide (text_tool->shell);
text_init_render (text_tool);
}
static gint
text_delete_callback (GtkWidget *w,
GdkEvent *e,
gpointer client_data)
{
text_cancel_callback (w, client_data);
return FALSE;
}
static void
text_cancel_callback (GtkWidget *w,
gpointer client_data)
{
TextTool * text_tool;
text_tool = (TextTool *) client_data;
if (GTK_WIDGET_VISIBLE (text_tool->shell))
gtk_widget_hide (text_tool->shell);
}
static void
text_font_item_update (GtkWidget *w,
gpointer data)
{
FontInfo *font;
int old_index;
int i, index;
/* Is this font being selected? */
if (w->state != GTK_STATE_SELECTED)
return;
index = (long) data;
old_index = the_text_tool->font_index;
the_text_tool->font_index = index;
if (!text_load_font (the_text_tool))
{
the_text_tool->font_index = old_index;
return;
}
font = font_info[the_text_tool->font_index];
if (the_text_tool->foundry && !font->foundries[the_text_tool->foundry])
{
the_text_tool->foundry = 0;
gtk_option_menu_set_history (GTK_OPTION_MENU (the_text_tool->option_menus[0]), 0);
}
if (the_text_tool->weight && !font->weights[the_text_tool->weight])
{
the_text_tool->weight = 0;
gtk_option_menu_set_history (GTK_OPTION_MENU (the_text_tool->option_menus[1]), 0);
}
if (the_text_tool->slant && !font->slants[the_text_tool->slant])
{
the_text_tool->slant = 0;
gtk_option_menu_set_history (GTK_OPTION_MENU (the_text_tool->option_menus[2]), 0);
}
if (the_text_tool->set_width && !font->set_widths[the_text_tool->set_width])
{
the_text_tool->set_width = 0;
gtk_option_menu_set_history (GTK_OPTION_MENU (the_text_tool->option_menus[3]), 0);
}
if (the_text_tool->spacing && !font->spacings[the_text_tool->spacing])
{
the_text_tool->spacing = 0;
gtk_option_menu_set_history (GTK_OPTION_MENU (the_text_tool->option_menus[4]), 0);
}
for (i = 0; i < nfoundries; i++)
gtk_widget_set_sensitive (the_text_tool->foundry_items[i], font->foundries[i]);
for (i = 0; i < nweights; i++)
gtk_widget_set_sensitive (the_text_tool->weight_items[i], font->weights[i]);
for (i = 0; i < nslants; i++)
gtk_widget_set_sensitive (the_text_tool->slant_items[i], font->slants[i]);
for (i = 0; i < nset_widths; i++)
gtk_widget_set_sensitive (the_text_tool->set_width_items[i], font->set_widths[i]);
for (i = 0; i < nspacings; i++)
gtk_widget_set_sensitive (the_text_tool->spacing_items[i], font->spacings[i]);
}
static void
text_pixels_callback (GtkWidget *w,
gpointer client_data)
{
TextTool *text_tool;
int old_value;
text_tool = (TextTool *) client_data;
old_value = text_tool->size_type;
text_tool->size_type = PIXELS;
if (!text_load_font (text_tool))
text_tool->size_type = old_value;
}
static void
text_points_callback (GtkWidget *w,
gpointer client_data)
{
TextTool *text_tool;
int old_value;
text_tool = (TextTool *) client_data;
old_value = text_tool->size_type;
text_tool->size_type = POINTS;
if (!text_load_font (text_tool))
text_tool->size_type = old_value;
}
static void
text_foundry_callback (GtkWidget *w,
gpointer client_data)
{
int old_value;
old_value = the_text_tool->foundry;
the_text_tool->foundry = (long) client_data;
text_validate_combo (the_text_tool, 0);
if (text_load_font (the_text_tool))
the_text_tool->foundry = old_value;
}
static void
text_weight_callback (GtkWidget *w,
gpointer client_data)
{
int old_value;
old_value = the_text_tool->weight;
the_text_tool->weight = (long) client_data;
text_validate_combo (the_text_tool, 1);
if (!text_load_font (the_text_tool))
the_text_tool->weight = old_value;
}
static void
text_slant_callback (GtkWidget *w,
gpointer client_data)
{
int old_value;
old_value = the_text_tool->slant;
the_text_tool->slant = (long) client_data;
text_validate_combo (the_text_tool, 2);
if (!text_load_font (the_text_tool))
the_text_tool->slant = old_value;
}
static void
text_set_width_callback (GtkWidget *w,
gpointer client_data)
{
int old_value;
old_value = the_text_tool->set_width;
the_text_tool->set_width = (long) client_data;
text_validate_combo (the_text_tool, 3);
if (!text_load_font (the_text_tool))
the_text_tool->set_width = old_value;
}
static void
text_spacing_callback (GtkWidget *w,
gpointer client_data)
{
int old_value;
old_value = the_text_tool->spacing;
the_text_tool->spacing = (long) client_data;
text_validate_combo (the_text_tool, 4);
if (!text_load_font (the_text_tool))
the_text_tool->spacing = old_value;
}
static gint
text_size_key_function (GtkWidget *w,
GdkEventKey *event,
gpointer data)
{
TextTool *text_tool;
char buffer[16];
int old_value;
text_tool = (TextTool *) data;
if (event->keyval == GDK_Return)
{
gtk_signal_emit_stop_by_name (GTK_OBJECT (w), "key_press_event");
old_value = atoi (gtk_entry_get_text (GTK_ENTRY (text_tool->size_text)));
if (!text_load_font (text_tool))
{
sprintf (buffer, "%d", old_value);
gtk_entry_set_text (GTK_ENTRY (text_tool->size_text), buffer);
}
return TRUE;
}
return FALSE;
}
static void
text_antialias_update (GtkWidget *w,
gpointer data)
{
TextTool *text_tool;
text_tool = (TextTool *) data;
if (GTK_TOGGLE_BUTTON (w)->active)
text_tool->antialias = TRUE;
else
text_tool->antialias = FALSE;
}
static void
text_validate_combo (TextTool *text_tool,
int which)
{
FontInfo *font;
int which_val;
int new_combo[5];
int best_combo[5];
int best_matches;
int matches;
int i;
font = font_info[text_tool->font_index];
switch (which)
{
case 0:
which_val = text_tool->foundry;
break;
case 1:
which_val = text_tool->weight;
break;
case 2:
which_val = text_tool->slant;
break;
case 3:
which_val = text_tool->set_width;
break;
case 4:
which_val = text_tool->spacing;
break;
default:
which_val = 0;
break;
}
best_matches = -1;
best_combo[0] = 0;
best_combo[1] = 0;
best_combo[2] = 0;
best_combo[3] = 0;
best_combo[4] = 0;
for (i = 0; i < font->ncombos; i++)
{
/* we must match the which field */
if (font->combos[i][which] == which_val)
{
matches = 0;
new_combo[0] = 0;
new_combo[1] = 0;
new_combo[2] = 0;
new_combo[3] = 0;
new_combo[4] = 0;
if ((text_tool->foundry == 0) || (text_tool->foundry == font->combos[i][0]))
{
matches++;
if (text_tool->foundry)
new_combo[0] = font->combos[i][0];
}
if ((text_tool->weight == 0) || (text_tool->weight == font->combos[i][1]))
{
matches++;
if (text_tool->weight)
new_combo[1] = font->combos[i][1];
}
if ((text_tool->slant == 0) || (text_tool->slant == font->combos[i][2]))
{
matches++;
if (text_tool->slant)
new_combo[2] = font->combos[i][2];
}
if ((text_tool->set_width == 0) || (text_tool->set_width == font->combos[i][3]))
{
matches++;
if (text_tool->set_width)
new_combo[3] = font->combos[i][3];
}
if ((text_tool->spacing == 0) || (text_tool->spacing == font->combos[i][4]))
{
matches++;
if (text_tool->spacing)
new_combo[4] = font->combos[i][4];
}
/* if we get all 5 matches simply return */
if (matches == 5)
return;
if (matches > best_matches)
{
best_matches = matches;
best_combo[0] = new_combo[0];
best_combo[1] = new_combo[1];
best_combo[2] = new_combo[2];
best_combo[3] = new_combo[3];
best_combo[4] = new_combo[4];
}
}
}
if (best_matches > -1)
{
if (text_tool->foundry != best_combo[0])
{
text_tool->foundry = best_combo[0];
if (which != 0)
gtk_option_menu_set_history (GTK_OPTION_MENU (text_tool->option_menus[0]), text_tool->foundry);
}
if (text_tool->weight != best_combo[1])
{
text_tool->weight = best_combo[1];
if (which != 1)
gtk_option_menu_set_history (GTK_OPTION_MENU (text_tool->option_menus[1]), text_tool->weight);
}
if (text_tool->slant != best_combo[2])
{
text_tool->slant = best_combo[2];
if (which != 2)
gtk_option_menu_set_history (GTK_OPTION_MENU (text_tool->option_menus[2]), text_tool->slant);
}
if (text_tool->set_width != best_combo[3])
{
text_tool->set_width = best_combo[3];
if (which != 3)
gtk_option_menu_set_history (GTK_OPTION_MENU (text_tool->option_menus[3]), text_tool->set_width);
}
if (text_tool->spacing != best_combo[4])
{
text_tool->spacing = best_combo[4];
if (which != 4)
gtk_option_menu_set_history (GTK_OPTION_MENU (text_tool->option_menus[4]), text_tool->spacing);
}
}
}
static void
text_get_fonts ()
{
char **fontnames;
char *fontname;
char *field;
link_ptr temp_list;
int num_fonts;
int index;
int i, j;
/* construct a valid font pattern */
fontnames = XListFonts (DISPLAY, "-*-*-*-*-*-*-0-0-75-75-*-0-*-*", 32767, &num_fonts);
/* the maximum size of the table is the number of font names returned */
font_info = g_malloc (sizeof (FontInfo**) * num_fonts);
/* insert the fontnames into a table */
nfonts = 0;
for (i = 0; i < num_fonts; i++)
if (text_is_xlfd_font_name (fontnames[i]))
{
text_insert_font (font_info, &nfonts, fontnames[i]);
foundries = text_insert_field (foundries, fontnames[i], FOUNDRY);
weights = text_insert_field (weights, fontnames[i], WEIGHT);
slants = text_insert_field (slants, fontnames[i], SLANT);
set_widths = text_insert_field (set_widths, fontnames[i], SET_WIDTH);
spacings = text_insert_field (spacings, fontnames[i], SPACING);
}
XFreeFontNames (fontnames);
nfoundries = list_length (foundries) + 1;
nweights = list_length (weights) + 1;
nslants = list_length (slants) + 1;
nset_widths = list_length (set_widths) + 1;
nspacings = list_length (spacings) + 1;
foundry_array = g_malloc (sizeof (char*) * nfoundries);
weight_array = g_malloc (sizeof (char*) * nweights);
slant_array = g_malloc (sizeof (char*) * nslants);
set_width_array = g_malloc (sizeof (char*) * nset_widths);
spacing_array = g_malloc (sizeof (char*) * nspacings);
i = 1;
temp_list = foundries;
while (temp_list)
{
foundry_array[i++] = temp_list->data;
temp_list = temp_list->next;
}
i = 1;
temp_list = weights;
while (temp_list)
{
weight_array[i++] = temp_list->data;
temp_list = temp_list->next;
}
i = 1;
temp_list = slants;
while (temp_list)
{
slant_array[i++] = temp_list->data;
temp_list = temp_list->next;
}
i = 1;
temp_list = set_widths;
while (temp_list)
{
set_width_array[i++] = temp_list->data;
temp_list = temp_list->next;
}
i = 1;
temp_list = spacings;
while (temp_list)
{
spacing_array[i++] = temp_list->data;
temp_list = temp_list->next;
}
foundry_array[0] = "*";
weight_array[0] = "*";
slant_array[0] = "*";
set_width_array[0] = "*";
spacing_array[0] = "*";
for (i = 0; i < nfonts; i++)
{
font_info[i]->foundries = g_malloc (sizeof (int) * nfoundries);
font_info[i]->weights = g_malloc (sizeof (int) * nweights);
font_info[i]->slants = g_malloc (sizeof (int) * nslants);
font_info[i]->set_widths = g_malloc (sizeof (int) * nset_widths);
font_info[i]->spacings = g_malloc (sizeof (int) * nspacings);
font_info[i]->ncombos = list_length (font_info[i]->fontnames);
font_info[i]->combos = g_malloc (sizeof (int*) * font_info[i]->ncombos);
for (j = 0; j < nfoundries; j++)
font_info[i]->foundries[j] = 0;
for (j = 0; j < nweights; j++)
font_info[i]->weights[j] = 0;
for (j = 0; j < nslants; j++)
font_info[i]->slants[j] = 0;
for (j = 0; j < nset_widths; j++)
font_info[i]->set_widths[j] = 0;
for (j = 0; j < nspacings; j++)
font_info[i]->spacings[j] = 0;
font_info[i]->foundries[0] = 1;
font_info[i]->weights[0] = 1;
font_info[i]->slants[0] = 1;
font_info[i]->set_widths[0] = 1;
font_info[i]->spacings[0] = 1;
j = 0;
temp_list = font_info[i]->fontnames;
while (temp_list)
{
fontname = temp_list->data;
temp_list = temp_list->next;
font_info[i]->combos[j] = g_malloc (sizeof (int) * 5);
field = text_get_field (fontname, FOUNDRY);
index = text_field_to_index (foundry_array, nfoundries, field);
font_info[i]->foundries[index] = 1;
font_info[i]->combos[j][0] = index;
free (field);
field = text_get_field (fontname, WEIGHT);
index = text_field_to_index (weight_array, nweights, field);
font_info[i]->weights[index] = 1;
font_info[i]->combos[j][1] = index;
free (field);
field = text_get_field (fontname, SLANT);
index = text_field_to_index (slant_array, nslants, field);
font_info[i]->slants[index] = 1;
font_info[i]->combos[j][2] = index;
free (field);
field = text_get_field (fontname, SET_WIDTH);
index = text_field_to_index (set_width_array, nset_widths, field);
font_info[i]->set_widths[index] = 1;
font_info[i]->combos[j][3] = index;
free (field);
field = text_get_field (fontname, SPACING);
index = text_field_to_index (spacing_array, nspacings, field);
font_info[i]->spacings[index] = 1;
font_info[i]->combos[j][4] = index;
free (field);
j += 1;
}
}
}
static void
text_insert_font (FontInfo **table,
int *ntable,
char *fontname)
{
FontInfo *temp_info;
char *family;
int lower, upper;
int middle, cmp;
/* insert a fontname into a table */
family = text_get_field (fontname, FAMILY);
if (!family)
return;
lower = 0;
if (*ntable > 0)
{
/* Do a binary search to determine if we have already encountered
* a font from this family.
*/
upper = *ntable;
while (lower < upper)
{
middle = (lower + upper) >> 1;
cmp = strcmp (family, table[middle]->family);
if (cmp == 0)
{
table[middle]->fontnames = add_to_list (table[middle]->fontnames, g_strdup (fontname));
return;
}
else if (cmp < 0)
upper = middle;
else if (cmp > 0)
lower = middle+1;
}
}
/* Add another entry to the table for this new font family */
table[*ntable] = g_malloc (sizeof (FontInfo));
table[*ntable]->family = family;
table[*ntable]->foundries = NULL;
table[*ntable]->weights = NULL;
table[*ntable]->slants = NULL;
table[*ntable]->set_widths = NULL;
table[*ntable]->fontnames = NULL;
table[*ntable]->fontnames = add_to_list (table[*ntable]->fontnames, g_strdup (fontname));
(*ntable)++;
/* Quickly insert the entry into the table in sorted order
* using a modification of insertion sort and the knowledge
* that the entries proper position in the table was determined
* above in the binary search and is contained in the "lower"
* variable.
*/
if (*ntable > 1)
{
temp_info = table[*ntable - 1];
upper = *ntable - 1;
while (lower != upper)
{
table[upper] = table[upper-1];
upper -= 1;
}
table[lower] = temp_info;
}
}
static link_ptr
text_insert_field (link_ptr list,
char *fontname,
int field_num)
{
link_ptr temp_list;
link_ptr prev_list;
link_ptr new_list;
char *field;
int cmp;
field = text_get_field (fontname, field_num);
if (!field)
return list;
temp_list = list;
prev_list = NULL;
while (temp_list)
{
cmp = strcmp (field, temp_list->data);
if (cmp == 0)
{
free (field);
return list;
}
else if (cmp < 0)
{
new_list = alloc_list ();
new_list->data = field;
new_list->next = temp_list;
if (prev_list)
{
prev_list->next = new_list;
return list;
}
else
return new_list;
}
else
{
prev_list = temp_list;
temp_list = temp_list->next;
}
}
new_list = alloc_list ();
new_list->data = field;
new_list->next = NULL;
if (prev_list)
{
prev_list->next = new_list;
return list;
}
else
return new_list;
}
static char*
text_get_field (char *fontname,
int field_num)
{
char *t1, *t2;
char *field;
/* we assume this is a valid fontname...that is, it has 14 fields */
t1 = fontname;
while (*t1 && (field_num >= 0))
if (*t1++ == '-')
field_num--;
t2 = t1;
while (*t2 && (*t2 != '-'))
t2++;
if (t1 != t2)
{
field = g_malloc (1 + (long) t2 - (long) t1);
strncpy (field, t1, (long) t2 - (long) t1);
field[(long) t2 - (long) t1] = 0;
return field;
}
return g_strdup ("(nil)");
}
static int
text_field_to_index (char **table,
int ntable,
char *field)
{
int i;
for (i = 0; i < ntable; i++)
if (strcmp (field, table[i]) == 0)
return i;
return -1;
}
static int
text_is_xlfd_font_name (char *fontname)
{
int i;
i = 0;
while (*fontname)
if (*fontname++ == '-')
i++;
return (i == 14);
}
static int
text_get_xlfd (double size,
int size_type,
char *foundry,
char *family,
char *weight,
char *slant,
char *set_width,
char *spacing,
char *fontname)
{
char pixel_size[12], point_size[12];
if (size > 0)
{
switch (size_type)
{
case PIXELS:
sprintf (pixel_size, "%d", (int) size);
sprintf (point_size, "*");
break;
case POINTS:
sprintf (pixel_size, "*");
sprintf (point_size, "%d", (int) (size * 10));
break;
}
/* create the fontname */
sprintf (fontname, "-%s-%s-%s-%s-%s-*-%s-%s-75-75-%s-*-*-*",
foundry,
family,
weight,
slant,
set_width,
pixel_size, point_size,
spacing);
return TRUE;
}
else
return FALSE;
}
static int
text_load_font (TextTool *text_tool)
{
GdkFont *font;
char fontname[2048];
double size;
char *size_text;
char *foundry_str;
char *family_str;
char *weight_str;
char *slant_str;
char *set_width_str;
char *spacing_str;
size_text = gtk_entry_get_text (GTK_ENTRY (text_tool->size_text));
size = atof (size_text);
foundry_str = foundry_array[text_tool->foundry];
if (strcmp (foundry_str, "(nil)") == 0)
foundry_str = "";
family_str = font_info[text_tool->font_index]->family;
weight_str = weight_array[text_tool->weight];
if (strcmp (weight_str, "(nil)") == 0)
weight_str = "";
slant_str = slant_array[text_tool->slant];
if (strcmp (slant_str, "(nil)") == 0)
slant_str = "";
set_width_str = set_width_array[text_tool->set_width];
if (strcmp (set_width_str, "(nil)") == 0)
set_width_str = "";
spacing_str = spacing_array[text_tool->spacing];
if (strcmp (spacing_str, "(nil)") == 0)
spacing_str = "";
if (text_get_xlfd (size, text_tool->size_type, foundry_str, family_str,
weight_str, slant_str, set_width_str, spacing_str, fontname))
{
font = gdk_font_load (fontname);
if (font)
{
if (text_tool->font)
gdk_font_unref (text_tool->font);
text_tool->font = font;
text_resize_text_widget (text_tool);
return TRUE;
}
}
return FALSE;
}
static void
text_init_render (TextTool *text_tool)
{
GDisplay *gdisp;
char fontname[2048];
char *text;
int border;
char *border_text;
double size;
char *size_text;
char *foundry_str;
char *family_str;
char *weight_str;
char *slant_str;
char *set_width_str;
char *spacing_str;
size_text = gtk_entry_get_text (GTK_ENTRY (text_tool->size_text));
size = atof (size_text);
if (text_tool->antialias)
size *= SUPERSAMPLE;
foundry_str = foundry_array[text_tool->foundry];
if (strcmp (foundry_str, "(nil)") == 0)
foundry_str = "";
family_str = font_info[text_tool->font_index]->family;
weight_str = weight_array[text_tool->weight];
if (strcmp (weight_str, "(nil)") == 0)
weight_str = "";
slant_str = slant_array[text_tool->slant];
if (strcmp (slant_str, "(nil)") == 0)
slant_str = "";
set_width_str = set_width_array[text_tool->set_width];
if (strcmp (set_width_str, "(nil)") == 0)
set_width_str = "";
spacing_str = spacing_array[text_tool->spacing];
if (strcmp (spacing_str, "(nil)") == 0)
spacing_str = "";
if (text_get_xlfd (size, text_tool->size_type, foundry_str, family_str,
weight_str, slant_str, set_width_str, spacing_str, fontname))
{
/* get the text */
text = gtk_entry_get_text (GTK_ENTRY (text_tool->the_text));
border_text = gtk_entry_get_text (GTK_ENTRY (text_tool->border_text));
border = atoi (border_text);
gdisp = (GDisplay *) text_tool->gdisp_ptr;
text_render (gdisp->gimage, gimage_active_drawable (gdisp->gimage),
text_tool->click_x, text_tool->click_y,
fontname, text, border, text_tool->antialias);
gdisplays_flush ();
}
}
static void
text_gdk_image_to_region (GdkImage *image,
int scale,
PixelRegion *textPR)
{
int black_pixel;
int pixel;
int value;
int scalex, scaley;
int scale2;
int x, y;
int i, j;
unsigned char * data;
scale2 = scale * scale;
black_pixel = BlackPixel (DISPLAY, DefaultScreen (DISPLAY));
data = textPR->data;
for (y = 0, scaley = 0; y < textPR->h; y++, scaley += scale)
{
for (x = 0, scalex = 0; x < textPR->w; x++, scalex += scale)
{
value = 0;
for (i = scaley; i < scaley + scale; i++)
for (j = scalex; j < scalex + scale; j++)
{
pixel = gdk_image_get_pixel (image, j, i);
if (pixel == black_pixel)
value += 255;
}
value = value / scale2;
/* store the alpha value in the data */
*data++ = (unsigned char) value;
}
}
}
static Layer *
text_render (GImage *gimage,
int drawable_id,
int text_x,
int text_y,
char *fontname,
char *text,
int border,
int antialias)
{
GdkFont *font;
GdkPixmap *pixmap;
GdkImage *image;
GdkGC *gc;
GdkColor black, white;
Layer *layer;
TileManager *mask, *newmask;
PixelRegion textPR, maskPR;
int layer_type;
unsigned char color[MAX_CHANNELS];
char *str;
int nstrs;
int crop;
int line_width, line_height;
int pixmap_width, pixmap_height;
int text_width, text_height;
int width, height;
int x, y, k;
void * pr;
/* determine the layer type */
if (drawable_id != -1)
layer_type = drawable_type_with_alpha (drawable_id);
else
layer_type = gimage_base_type_with_alpha (gimage);
/* scale the text based on the antialiasing amount */
if (antialias)
antialias = SUPERSAMPLE;
else
antialias = 1;
/* Dont crop the text if border is negative */
crop = (border >= 0);
if (!crop) border = 0;
/* load the font in */
font = gdk_font_load (fontname);
if (!font)
return NULL;
/* determine the bounding box of the text */
width = -1;
height = 0;
line_height = font->ascent + font->descent;
nstrs = 0;
str = strtok (text, "\n");
while (str)
{
nstrs += 1;
/* gdk_string_measure will give the correct width of the
* string. However, we'll add a little "fudge" factor just
* to be sure.
*/
line_width = gdk_string_measure (font, str) + 5;
if (line_width > width)
width = line_width;
height += line_height;
str = strtok (NULL, "\n");
}
/* We limit the largest pixmap we create to approximately 200x200.
* This is approximate since it depends on the amount of antialiasing.
* Basically, we want the width and height to be divisible by the antialiasing
* amount. (Which lies in the range 1-10).
* This avoids problems on some X-servers (Xinside) which have problems
* with large pixmaps. (Specifically pixmaps which are larger - width
* or height - than the screen).
*/
pixmap_width = TILE_WIDTH * antialias;
pixmap_height = TILE_HEIGHT * antialias;
/* determine the actual text size based on the amount of antialiasing */
text_width = width / antialias;
text_height = height / antialias;
/* create the pixmap of depth 1 */
pixmap = gdk_pixmap_new (NULL, pixmap_width, pixmap_height, 1);
/* create the gc */
gc = gdk_gc_new (pixmap);
gdk_gc_set_font (gc, font);
/* get black and white pixels for this gdisplay */
black.pixel = BlackPixel (DISPLAY, DefaultScreen (DISPLAY));
white.pixel = WhitePixel (DISPLAY, DefaultScreen (DISPLAY));
/* Render the text into the pixmap.
* Since the pixmap may not fully bound the text (because we limit its size)
* we must tile it around the texts actual bounding box.
*/
mask = tile_manager_new (text_width, text_height, 1);
pixel_region_init (&maskPR, mask, 0, 0, text_width, text_height, TRUE);
for (pr = pixel_regions_register (1, &maskPR); pr != NULL; pr = pixel_regions_process (pr))
{
/* erase the pixmap */
gdk_gc_set_foreground (gc, &white);
gdk_draw_rectangle (pixmap, gc, 1, 0, 0, pixmap_width, pixmap_height);
gdk_gc_set_foreground (gc, &black);
/* adjust the x and y values */
x = -maskPR.x * antialias;
y = font->ascent - maskPR.y * antialias;
str = text;
for (k = 0; k < nstrs; k++)
{
gdk_draw_string (pixmap, font, gc, x, y, str);
str += strlen (str) + 1;
y += line_height;
}
/* create the GdkImage */
image = gdk_image_get (pixmap, 0, 0, pixmap_width, pixmap_height);
if (!image)
fatal_error ("sanity check failed: could not get gdk image");
if (image->depth != 1)
fatal_error ("sanity check failed: image should have 1 bit per pixel");
/* convert the GdkImage bitmap to a region */
text_gdk_image_to_region (image, antialias, &maskPR);
/* free the image */
gdk_image_destroy (image);
}
/* Crop the mask buffer */
newmask = crop ? crop_buffer (mask, border) : mask;
if (newmask != mask)
tile_manager_destroy (mask);
if (newmask &&
(layer = layer_new (gimage->ID, newmask->levels[0].width,
newmask->levels[0].height, layer_type,
"Text Layer", OPAQUE, NORMAL_MODE)))
{
/* color the layer buffer */
gimage_get_foreground (gimage, drawable_id, color);
color[layer->bytes - 1] = OPAQUE;
pixel_region_init (&textPR, layer->tiles, 0, 0, layer->width, layer->height, TRUE);
color_region (&textPR, color);
/* apply the text mask */
pixel_region_init (&textPR, layer->tiles, 0, 0, layer->width, layer->height, TRUE);
pixel_region_init (&maskPR, newmask, 0, 0, layer->width, layer->height, FALSE);
apply_mask_to_region (&textPR, &maskPR, OPAQUE);
/* Start a group undo */
undo_push_group_start (gimage, EDIT_PASTE_UNDO);
/* Set the layer offsets */
layer->offset_x = text_x;
layer->offset_y = text_y;
/* If there is a selection mask clear it--
* this might not always be desired, but in general,
* it seems like the correct behavior.
*/
if (! gimage_mask_is_empty (gimage))
channel_clear (gimage_get_mask (gimage));
/* If the drawable id is invalid, create a new layer */
if (drawable_id == -1)
gimage_add_layer (gimage, layer, -1);
/* Otherwise, instantiate the text as the new floating selection */
else
floating_sel_attach (layer, drawable_id);
/* end the group undo */
undo_push_group_end (gimage);
tile_manager_destroy (newmask);
}
else
{
if (newmask)
warning("text_render: could not allocate image");
layer = NULL;
}
/* free the pixmap */
gdk_pixmap_unref (pixmap);
/* free the gc */
gdk_gc_destroy (gc);
/* free the font */
gdk_font_unref (font);
return layer;
}
static int
text_get_extents (char *fontname,
char *text,
int *width,
int *height,
int *ascent,
int *descent)
{
GdkFont *font;
char *str;
int nstrs;
int line_width, line_height;
/* load the font in */
font = gdk_font_load (fontname);
if (!font)
return FALSE;
/* determine the bounding box of the text */
*width = -1;
*height = 0;
*ascent = font->ascent;
*descent = font->descent;
line_height = *ascent + *descent;
nstrs = 0;
str = strtok (text, "\n");
while (str)
{
nstrs += 1;
/* gdk_string_measure will give the correct width of the
* string. However, we'll add a little "fudge" factor just
* to be sure.
*/
line_width = gdk_string_measure (font, str) + 5;
if (line_width > *width)
*width = line_width;
*height += line_height;
str = strtok (NULL, "\n");
}
if (*width < 0)
return FALSE;
else
return TRUE;
}
/* The text_tool procedure definition */
ProcArg text_tool_args[] =
{
{ PDB_IMAGE,
"image",
"The image"
},
{ PDB_DRAWABLE,
"drawable",
"The affected drawable: (-1 for a new text layer)"
},
{ PDB_FLOAT,
"x",
"the x coordinate for the left side of text bounding box"
},
{ PDB_FLOAT,
"y",
"the y coordinate for the top of text bounding box"
},
{ PDB_STRING,
"text",
"the text to generate"
},
{ PDB_INT32,
"border",
"the size of the border: border >= 0"
},
{ PDB_INT32,
"antialias",
"generate antialiased text"
},
{ PDB_FLOAT,
"size",
"the size of text in either pixels or points"
},
{ PDB_INT32,
"size_type",
"the units of the specified size: { PIXELS (0), POINTS (1) }"
},
{ PDB_STRING,
"foundry",
"the font foundry, \"*\" for any"
},
{ PDB_STRING,
"family",
"the font family, \"*\" for any"
},
{ PDB_STRING,
"weight",
"the font weight, \"*\" for any"
},
{ PDB_STRING,
"slant",
"the font slant, \"*\" for any"
},
{ PDB_STRING,
"set_width",
"the font set-width parameter, \"*\" for any"
},
{ PDB_STRING,
"spacing",
"the font spacing, \"*\" for any"
}
};
ProcArg text_tool_out_args[] =
{
{ PDB_LAYER,
"text_layer",
"the new text layer"
}
};
ProcRecord text_tool_proc =
{
"gimp_text",
"Add text at the specified location as a floating selection or a new layer.",
"This tool requires font information in the form of seven parameters: {size, foundry, family, weight, slant, set_width, spacing}. The font size can either be specified in units of pixels or points, and the appropriate metric is specified using the size_type "
"argument. The x and y parameters together control the placement of the new text by specifying the upper left corner of the text bounding box. If the antialias parameter is non-zero, the generated text will blend more smoothly with underlying layers. "
"This option requires more time and memory to compute than non-antialiased text; the resulting floating selection or layer, however, will require the same amount of memory with or without antialiasing. If the specified drawable parameter is valid, the "
"text will be created as a floating selection attached to the drawable. If the drawable parameter is not valid (-1), the text will appear as a new layer. Finally, a border can be specified around the final rendered text. The border is measured in pixels.",
"Spencer Kimball & Peter Mattis",
"Spencer Kimball & Peter Mattis",
"1995-1996",
PDB_INTERNAL,
/* Input arguments */
15,
text_tool_args,
/* Output arguments */
1,
text_tool_out_args,
/* Exec method */
{ { text_tool_invoker } },
};
/**********************/
/* TEXT_GET_EXTENTS */
ProcArg text_tool_get_extents_args[] =
{
{ PDB_STRING,
"text",
"the text to generate"
},
{ PDB_FLOAT,
"size",
"the size of text in either pixels or points"
},
{ PDB_INT32,
"size_type",
"the units of the specified size: { PIXELS (0), POINTS (1) }"
},
{ PDB_STRING,
"foundry",
"the font foundry, \"*\" for any"
},
{ PDB_STRING,
"family",
"the font family, \"*\" for any"
},
{ PDB_STRING,
"weight",
"the font weight, \"*\" for any"
},
{ PDB_STRING,
"slant",
"the font slant, \"*\" for any"
},
{ PDB_STRING,
"set_width",
"the font set-width parameter, \"*\" for any"
},
{ PDB_STRING,
"spacing",
"the font spacing, \"*\" for any"
}
};
ProcArg text_tool_get_extents_out_args[] =
{
{ PDB_INT32,
"width",
"the width of the specified text"
},
{ PDB_INT32,
"height",
"the height of the specified text"
},
{ PDB_INT32,
"ascent",
"the ascent of the specified font"
},
{ PDB_INT32,
"descent",
"the descent of the specified font"
}
};
ProcRecord text_tool_get_extents_proc =
{
"gimp_text_get_extents",
"Get extents of the bounding box for the specified text",
"This tool returns the width and height of a bounding box for the specified text string with the specified font information. Ascent and descent for the specified font are returned as well.",
"Spencer Kimball & Peter Mattis",
"Spencer Kimball & Peter Mattis",
"1995-1996",
PDB_INTERNAL,
/* Input arguments */
9,
text_tool_get_extents_args,
/* Output arguments */
4,
text_tool_get_extents_out_args,
/* Exec method */
{ { text_tool_get_extents_invoker } },
};
static Argument *
text_tool_invoker (Argument *args)
{
int success = TRUE;
GImage *gimage;
Layer *text_layer;
int drawable_id;
double x, y;
char *text;
int border;
int antialias;
double size;
int size_type;
char *foundry;
char *family;
char *weight;
char *slant;
char *set_width;
char *spacing;
int int_value;
double fp_value;
char fontname[2048];
Argument *return_args;
text_layer = NULL;
drawable_id = -1;
x = 0;
y = 0;
text = NULL;
border = FALSE;
antialias = FALSE;
size = 0;
size_type = PIXELS;
foundry = NULL;
family = NULL;
weight = NULL;
slant = NULL;
set_width = NULL;
spacing = NULL;
/* the gimage */
if (success)
{
int_value = args[0].value.pdb_int;
if (! (gimage = gimage_get_ID (int_value)))
success = FALSE;
}
/* the drawable */
if (success)
{
int_value = args[1].value.pdb_int;
if (gimage == drawable_gimage (int_value))
drawable_id = int_value;
else if (int_value == -1)
drawable_id = -1;
else
success = FALSE;
}
/* x, y coordinates */
if (success)
{
x = args[2].value.pdb_float;
y = args[3].value.pdb_float;
}
/* text */
if (success)
text = (char *) args[4].value.pdb_pointer;
/* border */
if (success)
{
int_value = args[5].value.pdb_int;
if (int_value >= -1)
border = int_value;
else
success = FALSE;
}
/* antialias */
if (success)
{
int_value = args[6].value.pdb_int;
antialias = (int_value) ? TRUE : FALSE;
}
/* size */
if (success)
{
fp_value = args[7].value.pdb_float;
if (fp_value > 0)
size = fp_value;
else
success = FALSE;
}
/* size type */
if (success)
{
int_value = args[8].value.pdb_int;
switch (int_value)
{
case 0: size_type = PIXELS; break;
case 1: size_type = POINTS; break;
default: success = FALSE;
}
}
/* foundry, family, weight, slant, set_width, spacing */
if (success)
{
foundry = (char *) args[9].value.pdb_pointer;
family = (char *) args[10].value.pdb_pointer;
weight = (char *) args[11].value.pdb_pointer;
slant = (char *) args[12].value.pdb_pointer;
set_width = (char *) args[13].value.pdb_pointer;
spacing = (char *) args[14].value.pdb_pointer;
}
/* increase the size by SUPERSAMPLE if we're antialiasing */
if (antialias)
size *= SUPERSAMPLE;
/* attempt to get the xlfd for the font */
if (success)
success = text_get_xlfd (size, size_type, foundry, family, weight,
slant, set_width, spacing, fontname);
/* call the text render procedure */
if (success)
success = ((text_layer = text_render (gimage, drawable_id, x, y, fontname,
text, border, antialias)) != NULL);
return_args = procedural_db_return_args (&text_tool_proc, success);
if (success)
return_args[1].value.pdb_int = text_layer->ID;
return return_args;
}
static Argument *
text_tool_get_extents_invoker (Argument *args)
{
int success = TRUE;
char *text;
double size;
int size_type;
char *foundry;
char *family;
char *weight;
char *slant;
char *set_width;
char *spacing;
int width, height;
int ascent, descent;
int int_value;
double fp_value;
char fontname[2048];
Argument *return_args;
size = 0.0;
size_type = PIXELS;
/* text */
if (success)
text = (char *) args[0].value.pdb_pointer;
/* size */
if (success)
{
fp_value = args[1].value.pdb_float;
if (fp_value > 0)
size = fp_value;
else
success = FALSE;
}
/* size type */
if (success)
{
int_value = args[2].value.pdb_int;
switch (int_value)
{
case 0: size_type = PIXELS; break;
case 1: size_type = POINTS; break;
default: success = FALSE;
}
}
/* foundry, family, weight, slant, set_width, spacing */
if (success)
{
foundry = (char *) args[3].value.pdb_pointer;
family = (char *) args[4].value.pdb_pointer;
weight = (char *) args[5].value.pdb_pointer;
slant = (char *) args[6].value.pdb_pointer;
set_width = (char *) args[7].value.pdb_pointer;
spacing = (char *) args[8].value.pdb_pointer;
}
/* attempt to get the xlfd for the font */
if (success)
success = text_get_xlfd (size, size_type, foundry, family, weight,
slant, set_width, spacing, fontname);
/* call the text render procedure */
if (success)
success = text_get_extents (fontname, text, &width, &height, &ascent, &descent);
return_args = procedural_db_return_args (&text_tool_get_extents_proc, success);
if (success)
{
return_args[1].value.pdb_int = width;
return_args[2].value.pdb_int = height;
return_args[3].value.pdb_int = ascent;
return_args[4].value.pdb_int = descent;
}
return return_args;
}
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