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gimp/libgimp/gimppatternmenu.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimppatternmenu.c
* Copyright (C) 1998 Andy Thomas
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "string.h"
#include "gimp.h"
#include "gimpui.h"
/* Idea is to have a function to call that returns a widget that
* completely controls the selection of a pattern.
* you get a widget returned that you can use in a table say.
* In:- Initial pattern name. Null means use current selection.
* pointer to func to call when pattern changes (GimpRunPatternCallback).
* Returned:- Pointer to a widget that you can use in UI.
*
* Widget simply made up of a preview widget (20x20) containing the pattern
* and a button that can be clicked on to change the pattern.
*/
#define PSEL_DATA_KEY "__psel_data"
#define CELL_SIZE 20
#define PREVIEW_EVENT_MASK GDK_EXPOSURE_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_BUTTON_RELEASE_MASK | \
GDK_BUTTON1_MOTION_MASK
struct __patterns_sel
{
gchar *dname;
GimpRunPatternCallback cback;
GtkWidget *pattern_preview;
GtkWidget *device_patpopup;
GtkWidget *device_patpreview;
GtkWidget *button;
GtkWidget *top_hbox;
gchar *pattern_name; /* Local copy */
gint width;
gint height;
gint bytes;
gchar *mask_data; /* local copy */
gchar *pattern_popup_pnt; /* Pointer use to control the popup */
gpointer data;
};
typedef struct __patterns_sel PSelect;
static void
pattern_popup_open (gint x,
gint y,
PSelect *psel)
{
gint x_org;
gint y_org;
gint scr_w;
gint scr_h;
gchar *src;
gchar *buf;
/* make sure the popup exists and is not visible */
if (psel->device_patpopup == NULL)
{
GtkWidget *frame;
psel->device_patpopup = gtk_window_new (GTK_WINDOW_POPUP);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (psel->device_patpopup), frame);
gtk_widget_show (frame);
psel->device_patpreview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_container_add (GTK_CONTAINER (frame), psel->device_patpreview);
gtk_widget_show (psel->device_patpreview);
}
else
{
gtk_widget_hide (psel->device_patpopup);
}
/* decide where to put the popup */
gdk_window_get_origin (psel->pattern_preview->window, &x_org, &y_org);
scr_w = gdk_screen_width ();
scr_h = gdk_screen_height ();
x = x_org + x - (psel->width >> 1);
y = y_org + y - (psel->height >> 1);
x = (x < 0) ? 0 : x;
y = (y < 0) ? 0 : y;
x = (x + psel->width > scr_w) ? scr_w - psel->width : x;
y = (y + psel->height > scr_h) ? scr_h - psel->height : y;
gtk_preview_size (GTK_PREVIEW (psel->device_patpreview),
psel->width, psel->height);
gtk_widget_set_uposition (psel->device_patpopup, x, y);
gtk_widget_show (psel->device_patpopup);
/* Draw the pattern */
buf = g_new (gchar, psel->width * 3);
src = psel->mask_data;
for (y = 0; y < psel->height; y++)
{
if (psel->bytes == 1)
for (x = 0; x < psel->width; x++)
{
buf[x*3+0] = src[x];
buf[x*3+1] = src[x];
buf[x*3+2] = src[x];
}
else
for (x = 0; x < psel->width; x++)
{
buf[x*3+0] = src[x*3+0];
buf[x*3+1] = src[x*3+1];
buf[x*3+2] = src[x*3+2];
}
gtk_preview_draw_row (GTK_PREVIEW (psel->device_patpreview),
(guchar *)buf, 0, y, psel->width);
src += psel->width * psel->bytes;
}
g_free (buf);
/* Draw the brush preview */
gtk_widget_draw (psel->device_patpreview, NULL);
}
static void
pattern_popup_close (PSelect *psel)
{
if (psel->device_patpopup != NULL)
gtk_widget_hide (psel->device_patpopup);
}
static gint
pattern_preview_events (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
GdkEventButton *bevent;
PSelect *psel = (PSelect*)data;
if (psel->mask_data)
{
switch (event->type)
{
case GDK_EXPOSE:
break;
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
gtk_grab_add (widget);
pattern_popup_open (bevent->x, bevent->y, psel);
}
break;
case GDK_BUTTON_RELEASE:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
gtk_grab_remove (widget);
pattern_popup_close (psel);
}
break;
case GDK_DELETE:
break;
default:
break;
}
}
return FALSE;
}
static void
pattern_pre_update (GtkWidget *pattern_preview,
gint width,
gint height,
gint bytes,
gchar *mask_data)
{
gint x;
gint y;
gchar *src;
gchar *buf;
/* Draw the pattern */
buf = g_new (gchar, width * 3);
src = mask_data;
for (y = 0; y < CELL_SIZE && y < height; y++)
{
if (bytes == 1)
for (x = 0; x < width && x < CELL_SIZE; x++)
{
buf[x*3+0] = src[x];
buf[x*3+1] = src[x];
buf[x*3+2] = src[x];
}
else
for (x = 0; x < width && x < CELL_SIZE; x++)
{
buf[x*3+0] = src[x*3+0];
buf[x*3+1] = src[x*3+1];
buf[x*3+2] = src[x*3+2];
}
gtk_preview_draw_row (GTK_PREVIEW (pattern_preview),
(guchar *)buf, 0, y, (width < CELL_SIZE) ? width : CELL_SIZE);
src += width * bytes;
}
g_free (buf);
/* Draw the brush preview */
gtk_widget_draw (pattern_preview, NULL);
}
static void
pattern_select_invoker (gchar *name,
gint width,
gint height,
gint bytes,
gchar *mask_data,
gint closing,
gpointer data)
{
gint mask_d_sz;
PSelect *psel = (PSelect*)data;
if (psel->mask_data != NULL)
g_free(psel->mask_data);
psel->width = width;
psel->height = height;
psel->bytes = bytes;
mask_d_sz = width * height * bytes;
psel->mask_data = g_malloc (mask_d_sz);
g_memmove (psel->mask_data, mask_data, mask_d_sz);
pattern_pre_update (psel->pattern_preview,
psel->width, psel->height, psel->bytes, psel->mask_data);
if (psel->cback != NULL)
(psel->cback)(name, width, height, bytes, mask_data, closing, psel->data);
if(closing)
{
gtk_widget_set_sensitive (psel->button, TRUE);
psel->pattern_popup_pnt = NULL;
}
}
static void
patterns_select_callback (GtkWidget *widget,
gpointer data)
{
PSelect *psel = (PSelect*)data;
gtk_widget_set_sensitive (psel->button, FALSE);
psel->pattern_popup_pnt =
gimp_interactive_selection_pattern ((psel->dname) ? psel->dname :
"Pattern Plugin Selection",
psel->pattern_name,
pattern_select_invoker,psel);
}
GtkWidget *
gimp_pattern_select_widget (gchar *dname,
gchar *ipattern,
GimpRunPatternCallback cback,
gpointer data)
{
GtkWidget *frame;
GtkWidget *hbox;
GtkWidget *pattern;
GtkWidget *button;
gint width;
gint height;
gint bytes;
gint mask_data_size;
guint8 *mask_data;
gchar *pattern_name;
PSelect *psel;
psel = g_new (PSelect, 1);
hbox = gtk_hbox_new (FALSE, 3);
gtk_widget_show(hbox);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_widget_show (frame);
pattern = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (pattern), CELL_SIZE, CELL_SIZE);
gtk_widget_show (pattern);
gtk_container_add (GTK_CONTAINER (frame), pattern);
gtk_widget_set_events (pattern, PREVIEW_EVENT_MASK);
g_signal_connect (G_OBJECT (pattern), "event",
G_CALLBACK (pattern_preview_events),
psel);
psel->cback = cback;
psel->data = data;
psel->mask_data = NULL;
psel->device_patpopup = psel->device_patpreview = NULL;
psel->pattern_preview = pattern;
psel->pattern_name = ipattern;
psel->dname = dname;
psel->pattern_popup_pnt = NULL;
/* Do initial pattern setup */
pattern_name =
gimp_patterns_get_pattern_data (ipattern,
&width,
&height,
&bytes,
&mask_data_size,
&mask_data);
if(pattern_name)
{
pattern_pre_update (psel->pattern_preview,
width, height, bytes, mask_data);
psel->mask_data = mask_data;
psel->pattern_name = pattern_name;
psel->width = width;
psel->height = height;
psel->bytes = bytes;
}
gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
button = gtk_button_new_with_label ("... ");
gtk_container_add (GTK_CONTAINER (hbox), button);
gtk_widget_show (button);
psel->button = button;
g_signal_connect (G_OBJECT (button), "clicked",
G_CALLBACK (patterns_select_callback),
psel);
g_object_set_data (G_OBJECT (hbox), PSEL_DATA_KEY, psel);
return hbox;
}
void
gimp_pattern_select_widget_close_popup (GtkWidget *widget)
{
PSelect *psel;
psel = (PSelect *) g_object_get_data (G_OBJECT (widget), PSEL_DATA_KEY);
if (psel && psel->pattern_popup_pnt)
{
gimp_patterns_close_popup (psel->pattern_popup_pnt);
psel->pattern_popup_pnt = NULL;
}
}
void
gimp_pattern_select_widget_set_popup (GtkWidget *widget,
gchar *pname)
{
gint width;
gint height;
gint bytes;
gint mask_data_size;
guint8 *mask_data;
gchar *pattern_name;
PSelect *psel;
psel = (PSelect*) g_object_get_data (G_OBJECT (widget), PSEL_DATA_KEY);
if (psel)
{
pattern_name =
gimp_patterns_get_pattern_data (pname,
&width,
&height,
&bytes,
&mask_data_size,
&mask_data);
pattern_select_invoker (pname, width, height, bytes, mask_data, 0, psel);
if (psel->pattern_popup_pnt)
gimp_patterns_set_popup (psel->pattern_popup_pnt, pname);
}
}
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