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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gdk/gdkkeysyms.h>
#include <gdk/gdkprivate.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 "procedural_db.h"
#include "selection.h"
#include "text_tool.h"
#include "tools.h"
#include "undo.h"
#include "tile_manager_pvt.h"
#include "drawable_pvt.h"
#include "libgimp/gimpintl.h"
#define PIXELS 0
#define POINTS 1
#define FOUNDRY 0
#define FAMILY 1
#define WEIGHT 2
#define SLANT 3
#define SET_WIDTH 4
#define PIXEL_SIZE 6
#define POINT_SIZE 7
#define SPACING 10
#define REGISTRY 12
#define ENCODING 13
#define SUPERSAMPLE 3
typedef struct _TextTool TextTool;
struct _TextTool
{
TextToolOptions options;
GtkWidget *shell;
GtkWidget *antialias_toggle;
int click_x;
int click_y;
void *gdisp_ptr;
};
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_antialias_update (GtkWidget *, gpointer);
static void text_spinbutton_update (GtkWidget *, gpointer);
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_init_render (TextTool *);
static void text_gdk_image_to_region (GdkImage *, int, PixelRegion *);
static char* text_get_field (char *, int);
static int text_get_extents (char *, char *, int *, int *, int *, int *);
static int text_get_xlfd (double, int, char *, char *, char *,
char *, char *, char *, char *,
char *, char *);
static void text_size_multiply (char **fontname, int);
static Layer * text_render (GImage *, GimpDrawable *, int, int, char *, char *, int, int);
static Argument * text_tool_invoker (Argument *);
static Argument * text_tool_invoker_ext (Argument *);
static Argument * text_tool_invoker_fontname (Argument *);
static Argument * text_tool_get_extents_invoker (Argument *);
static Argument * text_tool_get_extents_invoker_ext (Argument *);
static Argument * text_tool_get_extents_invoker_fontname (Argument *);
static void init_text_options (TextToolOptions *);
static TextTool *the_text_tool = NULL;
Tool*
tools_new_text ()
{
Tool * tool;
tool = g_malloc (sizeof (Tool));
if (!the_text_tool)
{
the_text_tool = g_malloc (sizeof (TextTool));
init_text_options(&the_text_tool->options);
the_text_tool->shell = NULL;
}
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;
tool->preserve = TRUE;
return tool;
}
void
tools_free_text (Tool *tool)
{
}
static void
init_text_options(TextToolOptions *options)
{
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *spinbutton;
GtkWidget *antialias_toggle;
GtkAdjustment *adj;
/* the new options structure */
options->antialias = TRUE;
options->border = 0;
/* the main vbox */
vbox = gtk_vbox_new (FALSE, 2);
/* the main label */
label = gtk_label_new (_("Text Options"));
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
/* antialias toggle */
antialias_toggle = gtk_check_button_new_with_label(_("Antialiasing"));
gtk_box_pack_start(GTK_BOX(vbox), antialias_toggle,
FALSE, FALSE, 0);
gtk_signal_connect(GTK_OBJECT(antialias_toggle), "toggled",
(GtkSignalFunc) text_antialias_update,
&options->antialias);
gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(antialias_toggle),
options->antialias);
gtk_widget_show(antialias_toggle);
/* Create the border hbox, border spinner, and label */
hbox = gtk_hbox_new(FALSE, 2);
label = gtk_label_new (_("Border: "));
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);
gtk_widget_show(label);
adj = (GtkAdjustment *) gtk_adjustment_new(options->border, 0.0,
32767.0, 1.0, 50.0, 0.0);
spinbutton = gtk_spin_button_new(adj, 1.0, 0.0);
gtk_spin_button_set_shadow_type(GTK_SPIN_BUTTON(spinbutton),
GTK_SHADOW_NONE);
gtk_spin_button_set_numeric(GTK_SPIN_BUTTON(spinbutton), TRUE);
gtk_widget_set_usize(spinbutton, 75, 0);
gtk_signal_connect(GTK_OBJECT (spinbutton), "changed",
(GtkSignalFunc) text_spinbutton_update,
&options->border);
gtk_box_pack_start(GTK_BOX(hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show(spinbutton);
gtk_widget_show(hbox);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
/* Register this selection options widget with the main tools
* options dialog */
tools_register_options (TEXT, vbox);
}
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 (!text_tool->shell)
text_create_dialog (text_tool);
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 && GTK_WIDGET_VISIBLE (the_text_tool->shell))
gtk_widget_hide (the_text_tool->shell);
break;
}
}
static void
text_create_dialog (TextTool *text_tool)
{
/* Create the shell and vertical & horizontal boxes */
text_tool->shell = gtk_font_selection_dialog_new (_("Text Tool"));
gtk_window_set_wmclass (GTK_WINDOW (text_tool->shell), "text_tool", "Gimp");
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);
gtk_widget_set (GTK_WIDGET (text_tool->shell),
"GtkWindow::auto_shrink", FALSE,
NULL);
/* handle the wm close signal */
gtk_signal_connect (GTK_OBJECT (text_tool->shell), "delete_event",
GTK_SIGNAL_FUNC (text_delete_callback),
text_tool);
/* ok and cancel buttons */
gtk_signal_connect (GTK_OBJECT (GTK_FONT_SELECTION_DIALOG
(text_tool->shell)->ok_button),
"clicked", GTK_SIGNAL_FUNC(text_ok_callback),
text_tool);
gtk_signal_connect (GTK_OBJECT (GTK_FONT_SELECTION_DIALOG
(text_tool->shell)->cancel_button),
"clicked", GTK_SIGNAL_FUNC(text_cancel_callback),
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 TRUE;
}
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_antialias_update (GtkWidget *w,
gpointer data)
{
int *toggle_val;
toggle_val = (int *) data;
if (GTK_TOGGLE_BUTTON (w)->active)
*toggle_val = TRUE;
else
*toggle_val = FALSE;
}
static void
text_spinbutton_update (GtkWidget *widget,
gpointer data)
{
int *val;
val = data;
*val = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (widget));
}
static void
text_init_render (TextTool *text_tool)
{
GDisplay *gdisp;
char *fontname;
char *text;
int antialias = text_tool->options.antialias;
fontname = gtk_font_selection_dialog_get_font_name(
GTK_FONT_SELECTION_DIALOG( text_tool->shell));
if (!fontname)
return;
gdisp = (GDisplay *) text_tool->gdisp_ptr;
/* override the user's antialias setting if this is an indexed image */
if (gimage_base_type (gdisp->gimage) == INDEXED)
antialias = FALSE;
/* If we're anti-aliasing, request a larger font than user specified.
* This will probably produce a font which isn't available if fonts
* are not scalable on this particular X server. TODO: Ideally, should
* grey out anti-alias on these kinds of servers. */
if (antialias)
text_size_multiply(&fontname, SUPERSAMPLE);
text = gtk_font_selection_dialog_get_preview_text(
GTK_FONT_SELECTION_DIALOG( text_tool->shell));
/* strdup it since the render function strtok()s the text */
text = g_strdup(text);
text_render (gdisp->gimage, gimage_active_drawable (gdisp->gimage),
text_tool->click_x, text_tool->click_y,
fontname, text, text_tool->options.border, antialias);
gdisplays_flush ();
g_free(fontname);
g_free(text);
}
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 ++;
}
/* store the alpha value in the data */
*data++= (unsigned char) ((value * 255) / scale2);
}
}
}
static Layer *
text_render (GImage *gimage,
GimpDrawable *drawable,
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)
layer_type = drawable_type_with_alpha (drawable);
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 */
gdk_error_warnings = 0;
gdk_error_code = 0;
font = gdk_font_load (fontname);
gdk_error_warnings = 1;
if (!font || (gdk_error_code == -1))
{
g_message(_("Font '%s' not found.%s"),
fontname,
antialias? _("\nIf you don't have scalable fonts, "
"try turning off antialiasing in the tool options.") : "");
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, newmask->width,
newmask->height, layer_type,
_("Text Layer"), OPAQUE_OPACITY, NORMAL_MODE)))
{
/* color the layer buffer */
gimage_get_foreground (gimage, drawable, color);
color[GIMP_DRAWABLE(layer)->bytes - 1] = OPAQUE_OPACITY;
pixel_region_init (&textPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
color_region (&textPR, color);
/* apply the text mask */
pixel_region_init (&textPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
pixel_region_init (&maskPR, newmask, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
apply_mask_to_region (&textPR, &maskPR, OPAQUE_OPACITY);
/* Start a group undo */
undo_push_group_start (gimage, EDIT_PASTE_UNDO);
/* Set the layer offsets */
GIMP_DRAWABLE(layer)->offset_x = text_x;
GIMP_DRAWABLE(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 == NULL)
gimage_add_layer (gimage, layer, -1);
/* Otherwise, instantiate the text as the new floating selection */
else
floating_sel_attach (layer, drawable);
/* end the group undo */
undo_push_group_end (gimage);
tile_manager_destroy (newmask);
}
else
{
if (newmask)
{
g_message (_("text_render: could not allocate image"));
tile_manager_destroy (newmask);
}
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 */
gdk_error_warnings = 0;
gdk_error_code = 0;
font = gdk_font_load (fontname);
gdk_error_warnings = 1;
if (!font || (gdk_error_code == -1))
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;
}
static void
text_field_edges(char *fontname,
int field_num,
/* RETURNS: */
char **start,
char **end)
{
char *t1, *t2;
t1 = fontname;
while (*t1 && (field_num >= 0))
if (*t1++ == '-')
field_num--;
t2 = t1;
while (*t2 && (*t2 != '-'))
t2++;
*start = t1;
*end = t2;
}
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 */
text_field_edges(fontname, field_num, &t1, &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)");
}
/* Multiply the point and pixel sizes in *fontname by "mul", which
* must be positive. If either point or pixel sizes are "*" then they
* are left untouched. The memory *fontname is g_free()d, and
* *fontname is replaced by a fresh allocation of the correct size. */
static void
text_size_multiply(char **fontname, int mul)
{
char *pixel_str;
char *point_str;
char *newfont;
char *end;
int pixel = -1;
int point = -1;
int length;
char new_pixel[12];
char new_point[12];
/* slice the font spec around the size fields */
text_field_edges(*fontname, PIXEL_SIZE, &pixel_str, &end);
text_field_edges(*fontname, POINT_SIZE, &point_str, &end);
*(pixel_str-1) = 0;
*(point_str-1) = 0;
if (*pixel_str != '*')
pixel = atoi(pixel_str);
if (*point_str != '*')
point = atoi(point_str);
pixel *= mul;
point *= mul;
/* convert the pixel and point sizes back to text */
#define TO_TXT(x) \
do { \
if (x >= 0) \
sprintf(new_ ## x, "%d", x); \
else \
sprintf(new_ ## x, "*"); \
} while(0)
TO_TXT(pixel);
TO_TXT(point);
#undef TO_TXT
/* careful you don't overrun the allocation */
length =
strlen(*fontname) + 1 +
strlen(new_pixel) + 1 + strlen(new_point) + strlen(end) + 1/*null-term*/;
newfont = g_malloc(length);
/* DON'T change this string without changing the length calculation
* above */
sprintf(newfont, "%s-%s-%s%s", *fontname, new_pixel, new_point, end);
g_free(*fontname);
*fontname = newfont;
}
static int
text_get_xlfd (double size,
int size_type,
char *foundry,
char *family,
char *weight,
char *slant,
char *set_width,
char *spacing,
char *registry,
char *encoding,
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-*-%s-%s",
foundry,
family,
weight,
slant,
set_width,
pixel_size, point_size,
spacing,
registry, encoding);
return TRUE;
}
else
return FALSE;
}
/****************************************/
/* 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 } },
};
/********************************************/
/* The text_tool_ext procedure definition */
ProcArg text_tool_args_ext[] =
{
{ 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"
},
{ PDB_STRING,
"registry",
"the font registry, \"*\" for any"
},
{ PDB_STRING,
"encoding",
"the font encoding, \"*\" for any"
}
};
ProcArg text_tool_out_args_ext[] =
{
{ PDB_LAYER,
"text_layer",
"the new text layer"
}
};
ProcRecord text_tool_proc_ext =
{
"gimp_text_ext",
"Add text at the specified location as a floating selection or a new layer.",
"This tool requires font information in the form of nine parameters: {size, foundry, family, weight, slant, set_width, spacing, registry, encoding}. 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.",
"Martin Edlman",
"Spencer Kimball & Peter Mattis",
"1998",
PDB_INTERNAL,
/* Input arguments */
17,
text_tool_args_ext,
/* Output arguments */
1,
text_tool_out_args_ext,
/* Exec method */
{ { text_tool_invoker_ext } },
};
/*************************************************/
/* The text_tool_fontname procedure definition */
ProcArg text_tool_args_fontname[] =
{
{ 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,
"fontname",
"the fontname (conforming to the X Logical Font Description Conventions)"
}
};
ProcArg text_tool_out_args_fontname[] =
{
{ PDB_LAYER,
"text_layer",
"the new text layer"
}
};
ProcRecord text_tool_proc_fontname =
{
"gimp_text_fontname",
"Add text at the specified location as a floating selection or a new layer.",
"This tool requires font information as a fontname conforming to the 'X Logical Font Description Conventions'. You can specify the fontsize in units of pixels or points, and the appropriate metric is specified using the size_type argument. The fontsize specified in the fontname is silently ignored."
"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.",
"Martin Edlman, Sven Neumann",
"Spencer Kimball & Peter Mattis",
"1998",
PDB_INTERNAL,
/* Input arguments */
10,
text_tool_args_fontname,
/* Output arguments */
1,
text_tool_out_args_fontname,
/* Exec method */
{ { text_tool_invoker_fontname } },
};
/**********************/
/* 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 } },
};
/**************************/
/* TEXT_GET_EXTENTS_EXT */
ProcArg text_tool_get_extents_args_ext[] =
{
{ 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"
},
{ PDB_STRING,
"registry",
"the font registry, \"*\" for any"
},
{ PDB_STRING,
"encoding",
"the font encoding, \"*\" for any"
}
};
ProcArg text_tool_get_extents_out_args_ext[] =
{
{ 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_ext =
{
"gimp_text_get_extents_ext",
"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.",
"Martin Edlman",
"Spencer Kimball & Peter Mattis",
"1998",
PDB_INTERNAL,
/* Input arguments */
11,
text_tool_get_extents_args_ext,
/* Output arguments */
4,
text_tool_get_extents_out_args_ext,
/* Exec method */
{ { text_tool_get_extents_invoker_ext } },
};
/*******************************/
/* TEXT_GET_EXTENTS_FONTNAME */
ProcArg text_tool_get_extents_args_fontname[] =
{
{ 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,
"fontname",
"the fontname (conforming to the X Logical Font Description Conventions)"
}
};
ProcArg text_tool_get_extents_out_args_fontname[] =
{
{ 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_fontname =
{
"gimp_text_get_extents_fontname",
"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.",
"Martin Edlman, Sven Neumann",
"Spencer Kimball & Peter Mattis",
"1998",
PDB_INTERNAL,
/* Input arguments */
4,
text_tool_get_extents_args_fontname,
/* Output arguments */
4,
text_tool_get_extents_out_args_fontname,
/* Exec method */
{ { text_tool_get_extents_invoker_fontname } },
};
static Argument *
text_tool_invoker (Argument *args)
{
int i;
Argument argv[17];
for (i=0; i<15; i++)
argv[i] = args[i];
argv[15].arg_type = PDB_STRING;
argv[15].value.pdb_pointer = (gpointer)"*";
argv[16].arg_type = PDB_STRING;
argv[16].value.pdb_pointer = (gpointer)"*";
return text_tool_invoker_ext (argv);
}
static Argument *
text_tool_invoker_fontname (Argument *args)
{
int i;
char *fontname;
Argument argv[17];
for (i=0; i<9; i++)
argv[i] = args[i];
fontname = (char *) args[9].value.pdb_pointer;
/*
Should check for a valid fontname here, probably using
if (!text_is_xlfd_font_name (fontname)) return
*/
argv[9].arg_type = PDB_STRING;
argv[9].value.pdb_pointer = text_get_field (fontname, FOUNDRY);
argv[10].arg_type = PDB_STRING;
argv[10].value.pdb_pointer = text_get_field (fontname, FAMILY);
argv[11].arg_type = PDB_STRING;
argv[11].value.pdb_pointer = text_get_field (fontname, WEIGHT);
argv[12].arg_type = PDB_STRING;
argv[12].value.pdb_pointer = text_get_field (fontname, SLANT);
argv[13].arg_type = PDB_STRING;
argv[13].value.pdb_pointer = text_get_field (fontname, SET_WIDTH);
argv[14].arg_type = PDB_STRING;
argv[14].value.pdb_pointer = text_get_field (fontname, SPACING);
argv[15].arg_type = PDB_STRING;
argv[15].value.pdb_pointer = text_get_field (fontname, REGISTRY);
argv[16].arg_type = PDB_STRING;
argv[16].value.pdb_pointer = text_get_field (fontname, ENCODING);
return text_tool_invoker_ext (argv);
}
static Argument *
text_tool_invoker_ext (Argument *args)
{
int success = TRUE;
GImage *gimage;
Layer *text_layer;
GimpDrawable *drawable;
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;
char *registry;
char *encoding;
int int_value;
double fp_value;
char fontname[2048];
Argument *return_args;
text_layer = NULL;
drawable = NULL;
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;
registry = NULL;
encoding = 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;
drawable = drawable_get_ID (int_value);
if (drawable && gimage != drawable_gimage (drawable))
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, registry, encoding */
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;
registry = (char *) args[15].value.pdb_pointer;
encoding = (char *) args[16].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, registry, encoding, fontname);
/* call the text render procedure */
if (success)
success = ((text_layer = text_render (gimage, drawable, 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 = drawable_ID (GIMP_DRAWABLE(text_layer));
return return_args;
}
static Argument *
text_tool_get_extents_invoker (Argument *args)
{
int i;
Argument argv[11];
for (i=0; i<9; i++)
argv[i] = args[i];
argv[9].arg_type = PDB_STRING;
argv[9].value.pdb_pointer = (gpointer)"*";
argv[10].arg_type = PDB_STRING;
argv[10].value.pdb_pointer = (gpointer)"*";
return text_tool_get_extents_invoker_ext (argv);
}
static Argument *
text_tool_get_extents_invoker_fontname (Argument *args)
{
int i;
gchar *fontname;
Argument argv[17];
for (i=0; i<3; i++)
argv[i] = args[i];
fontname = args[3].value.pdb_pointer;
argv[3].arg_type = PDB_STRING;
argv[3].value.pdb_pointer = text_get_field (fontname, FOUNDRY);
argv[4].arg_type = PDB_STRING;
argv[4].value.pdb_pointer = text_get_field (fontname, FAMILY);
argv[5].arg_type = PDB_STRING;
argv[5].value.pdb_pointer = text_get_field (fontname, WEIGHT);
argv[6].arg_type = PDB_STRING;
argv[6].value.pdb_pointer = text_get_field (fontname, SLANT);
argv[7].arg_type = PDB_STRING;
argv[7].value.pdb_pointer = text_get_field (fontname, SET_WIDTH);
argv[8].arg_type = PDB_STRING;
argv[8].value.pdb_pointer = text_get_field (fontname, SPACING);
argv[9].arg_type = PDB_STRING;
argv[9].value.pdb_pointer = text_get_field (fontname, REGISTRY);
argv[10].arg_type = PDB_STRING;
argv[10].value.pdb_pointer = text_get_field (fontname, ENCODING);
return text_tool_get_extents_invoker_ext (argv);
}
static Argument *
text_tool_get_extents_invoker_ext (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;
char *registry;
char *encoding;
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, registry, encoding */
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;
registry = (char *) args[9].value.pdb_pointer;
encoding = (char *) args[10].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, registry, encoding, 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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