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gimp/app/pattern_select.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 "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include "apptypes.h"
#include "appenv.h"
#include "dialog_handler.h"
#include "gimpcontext.h"
#include "gimpdnd.h"
#include "gimpui.h"
#include "patterns.h"
#include "pattern_select.h"
#include "procedural_db.h"
#include "session.h"
#include "temp_buf.h"
#include "libgimp/gimpintl.h"
#define MIN_CELL_SIZE 32
#define MAX_CELL_SIZE 45
#define STD_PATTERN_COLUMNS 6
#define STD_PATTERN_ROWS 5
/* how long to wait after mouse-down before showing pattern popup */
#define POPUP_DELAY_MS 150
#define MAX_WIN_WIDTH(psp) (MIN_CELL_SIZE * (psp)->NUM_PATTERN_COLUMNS)
#define MAX_WIN_HEIGHT(psp) (MIN_CELL_SIZE * (psp)->NUM_PATTERN_ROWS)
#define MARGIN_WIDTH 1
#define MARGIN_HEIGHT 1
#define PATTERN_EVENT_MASK GDK_BUTTON1_MOTION_MASK | \
GDK_EXPOSURE_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_ENTER_NOTIFY_MASK
/* local function prototypes */
static void pattern_change_callbacks (PatternSelect *psp,
gboolean closing);
static GPattern * pattern_select_drag_pattern (GtkWidget *widget,
gpointer data);
static void pattern_select_drop_pattern (GtkWidget *widget,
GPattern *pattern,
gpointer data);
static void pattern_select_pattern_changed (GimpContext *context,
GPattern *pattern,
PatternSelect *psp);
static void pattern_select_select (PatternSelect *psp,
GPattern *pattern);
static gboolean pattern_popup_timeout (gpointer data);
static void pattern_popup_open (PatternSelect *psp,
gint, gint, GPattern *);
static void pattern_popup_close (PatternSelect *);
static void display_setup (PatternSelect *);
static void display_pattern (PatternSelect *, GPattern *,
gint, gint);
static void display_patterns (PatternSelect *);
static void pattern_select_show_selected (PatternSelect *, gint, gint);
static void update_active_pattern_field (PatternSelect *);
static void preview_calc_scrollbar (PatternSelect *);
static gint pattern_select_resize (GtkWidget *, GdkEvent *,
PatternSelect *);
static gint pattern_select_events (GtkWidget *, GdkEvent *,
PatternSelect *);
static void pattern_select_scroll_update (GtkAdjustment *, gpointer);
static void pattern_select_close_callback (GtkWidget *, gpointer);
static void pattern_select_refresh_callback (GtkWidget *, gpointer);
/* dnd stuff */
static GtkTargetEntry preview_target_table[] =
{
GIMP_TARGET_PATTERN
};
static guint preview_n_targets = (sizeof (preview_target_table) /
sizeof (preview_target_table[0]));
/* The main pattern selection dialog */
PatternSelect *pattern_select_dialog = NULL;
/* local variables */
/* List of active dialogs */
GSList *pattern_active_dialogs = NULL;
void
pattern_dialog_create (void)
{
if (! pattern_select_dialog)
{
pattern_select_dialog = pattern_select_new (NULL, NULL);
}
else
{
if (!GTK_WIDGET_VISIBLE (pattern_select_dialog->shell))
gtk_widget_show (pattern_select_dialog->shell);
else
gdk_window_raise (pattern_select_dialog->shell->window);
}
}
void
pattern_dialog_free ()
{
if (pattern_select_dialog)
{
session_get_window_info (pattern_select_dialog->shell,
&pattern_select_session_info);
pattern_select_free (pattern_select_dialog);
pattern_select_dialog = NULL;
}
}
/* If title == NULL then it is the main pattern dialog */
PatternSelect *
pattern_select_new (gchar *title,
gchar *initial_pattern)
{
PatternSelect *psp;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *frame;
GtkWidget *sbar;
GtkWidget *label_box;
GPattern *active = NULL;
static gboolean first_call = TRUE;
psp = g_new (PatternSelect, 1);
psp->preview = NULL;
psp->callback_name = NULL;
psp->dnd_pattern = NULL;
psp->pattern_popup = NULL;
psp->popup_timeout_tag = 0;
psp->old_col = 0;
psp->old_row = 0;
psp->NUM_PATTERN_COLUMNS = STD_PATTERN_COLUMNS;
psp->NUM_PATTERN_ROWS = STD_PATTERN_COLUMNS;
/* The shell */
psp->shell = gimp_dialog_new (title ? title : _("Pattern Selection"),
"pattern_selection",
gimp_standard_help_func,
"dialogs/pattern_selection.html",
title ? GTK_WIN_POS_MOUSE : GTK_WIN_POS_NONE,
FALSE, TRUE, FALSE,
_("Refresh"), pattern_select_refresh_callback,
psp, NULL, NULL, FALSE, FALSE,
_("Close"), pattern_select_close_callback,
psp, NULL, NULL, TRUE, TRUE,
NULL);
if (title)
{
psp->context = gimp_context_new (title, NULL);
}
else
{
psp->context = gimp_context_get_user ();
session_set_window_geometry (psp->shell, &pattern_select_session_info,
TRUE);
dialog_register (psp->shell);
}
if (no_data && first_call)
patterns_init (FALSE);
first_call = FALSE;
if (title && initial_pattern && strlen (initial_pattern))
{
active = pattern_list_get_pattern (pattern_list, initial_pattern);
}
else
{
active = gimp_context_get_pattern (gimp_context_get_user ());
}
if (!active)
{
active = gimp_context_get_pattern (gimp_context_get_standard ());
}
if (title)
{
gimp_context_set_pattern (psp->context, active);
}
/* The main vbox */
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (psp->shell)->vbox), vbox);
/* Options box */
psp->options_box = gtk_vbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), psp->options_box, FALSE, FALSE, 0);
/* Create the active pattern label */
label_box = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (psp->options_box), label_box, FALSE, FALSE, 2);
psp->pattern_name = gtk_label_new (_("No Patterns available"));
gtk_box_pack_start (GTK_BOX (label_box), psp->pattern_name, FALSE, FALSE, 4);
psp->pattern_size = gtk_label_new ("(0 X 0)");
gtk_box_pack_start (GTK_BOX (label_box), psp->pattern_size, FALSE, FALSE, 2);
gtk_widget_show (psp->pattern_name);
gtk_widget_show (psp->pattern_size);
gtk_widget_show (label_box);
/* The horizontal box containing preview & scrollbar */
hbox = gtk_hbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
psp->sbar_data =
GTK_ADJUSTMENT (gtk_adjustment_new (0, 0, MAX_WIN_HEIGHT(psp),
1, 1, MAX_WIN_HEIGHT(psp)));
sbar = gtk_vscrollbar_new (psp->sbar_data);
gtk_signal_connect (GTK_OBJECT (psp->sbar_data), "value_changed",
GTK_SIGNAL_FUNC (pattern_select_scroll_update),
psp);
gtk_box_pack_start (GTK_BOX (hbox), sbar, FALSE, FALSE, 0);
/* Create the pattern preview window and the underlying image */
/* Get the initial pattern extents */
psp->cell_width = MIN_CELL_SIZE;
psp->cell_height = MIN_CELL_SIZE;
psp->preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (psp->preview),
MAX_WIN_WIDTH (psp), MAX_WIN_HEIGHT (psp));
gtk_preview_set_expand (GTK_PREVIEW (psp->preview), TRUE);
gtk_widget_set_events (psp->preview, PATTERN_EVENT_MASK);
gtk_signal_connect (GTK_OBJECT (psp->preview), "event",
GTK_SIGNAL_FUNC (pattern_select_events),
psp);
gtk_signal_connect (GTK_OBJECT (psp->preview), "size_allocate",
GTK_SIGNAL_FUNC (pattern_select_resize),
psp);
/* dnd stuff */
gtk_drag_source_set (psp->preview,
GDK_BUTTON2_MASK,
preview_target_table, preview_n_targets,
GDK_ACTION_COPY);
gimp_dnd_pattern_source_set (psp->preview, pattern_select_drag_pattern, psp);
gtk_drag_dest_set (psp->preview,
GTK_DEST_DEFAULT_ALL,
preview_target_table, preview_n_targets,
GDK_ACTION_COPY);
gimp_dnd_pattern_dest_set (psp->preview, pattern_select_drop_pattern, psp);
gtk_container_add (GTK_CONTAINER (frame), psp->preview);
gtk_widget_show (psp->preview);
gtk_widget_show (sbar);
gtk_widget_show (hbox);
gtk_widget_show (frame);
gtk_widget_show (psp->options_box);
gtk_widget_show (vbox);
gtk_widget_show (psp->shell);
preview_calc_scrollbar (psp);
gtk_signal_connect (GTK_OBJECT (psp->context), "pattern_changed",
GTK_SIGNAL_FUNC (pattern_select_pattern_changed),
psp);
if (active)
pattern_select_select (psp, active);
/* Add to active pattern dialogs list */
pattern_active_dialogs = g_slist_append (pattern_active_dialogs, psp);
return psp;
}
void
pattern_select_free (PatternSelect *psp)
{
if (!psp)
return;
/* remove from active list */
pattern_active_dialogs = g_slist_remove (pattern_active_dialogs, psp);
gtk_signal_disconnect_by_data (GTK_OBJECT (psp->context), psp);
if (psp->pattern_popup != NULL)
gtk_widget_destroy (psp->pattern_popup);
if (psp->popup_timeout_tag != 0)
gtk_timeout_remove (psp->popup_timeout_tag);
if (psp->callback_name)
{
g_free (psp->callback_name);
gtk_object_unref (GTK_OBJECT (psp->context));
}
g_free (psp);
}
/* Call this dialog's PDB callback */
static void
pattern_change_callbacks (PatternSelect *psp,
gboolean closing)
{
gchar *name;
ProcRecord *prec = NULL;
GPattern *pattern;
gint nreturn_vals;
static gboolean busy = FALSE;
/* Any procs registered to callback? */
Argument *return_vals;
if (!psp || !psp->callback_name || busy)
return;
busy = TRUE;
name = psp->callback_name;
pattern = gimp_context_get_pattern (psp->context);
/* If its still registered run it */
prec = procedural_db_lookup (name);
if (prec && pattern)
{
return_vals =
procedural_db_run_proc (name,
&nreturn_vals,
PDB_STRING, pattern->name,
PDB_INT32, pattern->mask->width,
PDB_INT32, pattern->mask->height,
PDB_INT32, pattern->mask->bytes,
PDB_INT32, pattern->mask->bytes*pattern->mask->height*pattern->mask->width,
PDB_INT8ARRAY, temp_buf_data (pattern->mask),
PDB_INT32, (gint) closing,
PDB_END);
if (!return_vals || return_vals[0].value.pdb_int != PDB_SUCCESS)
g_warning ("failed to run pattern callback function");
procedural_db_destroy_args (return_vals, nreturn_vals);
}
busy = FALSE;
}
/* Close active dialogs that no longer have PDB registered for them */
void
patterns_check_dialogs (void)
{
PatternSelect *psp;
GSList *list;
gchar *name;
ProcRecord *prec = NULL;
list = pattern_active_dialogs;
while (list)
{
psp = (PatternSelect *) list->data;
list = g_slist_next (list);
name = psp->callback_name;
if (name)
{
prec = procedural_db_lookup (name);
if (!prec)
{
/* Can alter pattern_active_dialogs list */
pattern_select_close_callback (NULL, psp);
}
}
}
}
/*
* Local functions
*/
static GPattern *
pattern_select_drag_pattern (GtkWidget *widget,
gpointer data)
{
PatternSelect *psp;
psp = (PatternSelect *) data;
return psp->dnd_pattern;
}
static void
pattern_select_drop_pattern (GtkWidget *widget,
GPattern *pattern,
gpointer data)
{
PatternSelect *psp;
psp = (PatternSelect *) data;
gimp_context_set_pattern (psp->context, pattern);
}
static void
pattern_select_pattern_changed (GimpContext *context,
GPattern *pattern,
PatternSelect *psp)
{
if (pattern)
{
pattern_select_select (psp, pattern);
if (psp->callback_name)
pattern_change_callbacks (psp, FALSE);
}
}
static void
pattern_select_select (PatternSelect *psp,
GPattern *pattern)
{
gint index;
gint row, col;
gint scroll_offset = 0;
index = pattern->index;
if (index < 0)
return;
update_active_pattern_field (psp);
row = index / psp->NUM_PATTERN_COLUMNS;
col = index - row * psp->NUM_PATTERN_COLUMNS;
/* check if the new active pattern is already in the preview */
if (((row + 1) * psp->cell_height) >
(psp->preview->allocation.height + psp->scroll_offset))
{
scroll_offset = (((row + 1) * psp->cell_height) -
(psp->scroll_offset + psp->preview->allocation.height));
}
else if ((row * psp->cell_height) < psp->scroll_offset)
{
scroll_offset = (row * psp->cell_height) - psp->scroll_offset;
}
else
{
pattern_select_show_selected (psp, row, col);
}
gtk_adjustment_set_value (psp->sbar_data, psp->scroll_offset + scroll_offset);
}
typedef struct
{
PatternSelect *psp;
int x;
int y;
GPattern *pattern;
} popup_timeout_args_t;
static gboolean
pattern_popup_timeout (gpointer data)
{
popup_timeout_args_t *args = data;
PatternSelect *psp = args->psp;
GPattern *pattern = args->pattern;
gint x, y;
gint x_org, y_org;
gint scr_w, scr_h;
gchar *src, *buf;
/* timeout has gone off so our tag is now invalid */
psp->popup_timeout_tag = 0;
/* make sure the popup exists and is not visible */
if (psp->pattern_popup == NULL)
{
GtkWidget *frame;
psp->pattern_popup = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_policy (GTK_WINDOW (psp->pattern_popup),
FALSE, FALSE, TRUE);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (psp->pattern_popup), frame);
gtk_widget_show (frame);
psp->pattern_preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_container_add (GTK_CONTAINER (frame), psp->pattern_preview);
gtk_widget_show (psp->pattern_preview);
}
else
{
gtk_widget_hide (psp->pattern_popup);
}
/* decide where to put the popup */
gdk_window_get_origin (psp->preview->window, &x_org, &y_org);
scr_w = gdk_screen_width ();
scr_h = gdk_screen_height ();
x = x_org + args->x - pattern->mask->width * 0.5;
y = y_org + args->y - pattern->mask->height * 0.5;
x = (x < 0) ? 0 : x;
y = (y < 0) ? 0 : y;
x = (x + pattern->mask->width > scr_w) ? scr_w - pattern->mask->width : x;
y = (y + pattern->mask->height > scr_h) ? scr_h - pattern->mask->height : y;
gtk_preview_size (GTK_PREVIEW (psp->pattern_preview),
pattern->mask->width, pattern->mask->height);
gtk_widget_popup (psp->pattern_popup, x, y);
/* Draw the pattern */
buf = g_new (gchar, pattern->mask->width * 3);
src = (gchar *)temp_buf_data (pattern->mask);
for (y = 0; y < pattern->mask->height; y++)
{
if (pattern->mask->bytes == 1)
for (x = 0; x < pattern->mask->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 < pattern->mask->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 (psp->pattern_preview), (guchar *)buf, 0, y, pattern->mask->width);
src += pattern->mask->width * pattern->mask->bytes;
}
g_free (buf);
/* Draw the pattern preview */
gtk_widget_draw (psp->pattern_preview, NULL);
return FALSE; /* don't repeat */
}
static void
pattern_popup_open (PatternSelect *psp,
gint x,
gint y,
GPattern *pattern)
{
static popup_timeout_args_t popup_timeout_args;
/* if we've already got a timeout scheduled, then we complain */
g_return_if_fail (psp->popup_timeout_tag == 0);
popup_timeout_args.psp = psp;
popup_timeout_args.x = x;
popup_timeout_args.y = y;
popup_timeout_args.pattern = pattern;
psp->popup_timeout_tag = gtk_timeout_add (POPUP_DELAY_MS,
pattern_popup_timeout,
&popup_timeout_args);
}
static void
pattern_popup_close (PatternSelect *psp)
{
if (psp->popup_timeout_tag != 0)
gtk_timeout_remove (psp->popup_timeout_tag);
psp->popup_timeout_tag = 0;
if (psp->pattern_popup != NULL)
gtk_widget_hide (psp->pattern_popup);
}
static void
display_setup (PatternSelect *psp)
{
guchar * buf;
gint i;
buf = g_new (guchar, 3 * psp->preview->allocation.width);
/* Set the buffer to white */
memset (buf, 255, psp->preview->allocation.width * 3);
/* Set the image buffer to white */
for (i = 0; i < psp->preview->allocation.height; i++)
gtk_preview_draw_row (GTK_PREVIEW (psp->preview), buf, 0, i,
psp->preview->allocation.width);
g_free (buf);
}
static void
display_pattern (PatternSelect *psp,
GPattern *pattern,
gint col,
gint row)
{
TempBuf * pattern_buf;
guchar * src, *s;
guchar * buf, *b;
gint cell_width, cell_height;
gint width, height;
gint rowstride;
gint offset_x, offset_y;
gint yend;
gint ystart;
gint i, j;
buf = g_new (guchar, psp->cell_width * 3);
pattern_buf = pattern->mask;
/* calculate the offset into the image */
cell_width = psp->cell_width - 2*MARGIN_WIDTH;
cell_height = psp->cell_height - 2*MARGIN_HEIGHT;
width = (pattern_buf->width > cell_width) ? cell_width :
pattern_buf->width;
height = (pattern_buf->height > cell_height) ? cell_height :
pattern_buf->height;
offset_x = col * psp->cell_width + ((cell_width - width) >> 1) + MARGIN_WIDTH;
offset_y = row * psp->cell_height + ((cell_height - height) >> 1)
- psp->scroll_offset + MARGIN_HEIGHT;
ystart = CLAMP (offset_y, 0, psp->preview->allocation.height);
yend = CLAMP (offset_y + height, 0, psp->preview->allocation.height);
/* Get the pointer into the pattern mask data */
rowstride = pattern_buf->width * pattern_buf->bytes;
src = temp_buf_data (pattern_buf) + (ystart - offset_y) * rowstride;
for (i = ystart; i < yend; i++)
{
s = src;
b = buf;
if (pattern_buf->bytes == 1)
for (j = 0; j < width; j++)
{
*b++ = *s;
*b++ = *s;
*b++ = *s++;
}
else
for (j = 0; j < width; j++)
{
*b++ = *s++;
*b++ = *s++;
*b++ = *s++;
}
gtk_preview_draw_row (GTK_PREVIEW (psp->preview), buf, offset_x, i, width);
src += rowstride;
}
g_free (buf);
}
static void
display_patterns (PatternSelect *psp)
{
GSList *list = pattern_list; /* the global pattern list */
gint row, col;
GPattern *pattern;
if (list == NULL)
{
gtk_widget_set_sensitive (psp->options_box, FALSE);
return;
}
else
{
gtk_widget_set_sensitive (psp->options_box, TRUE);
}
/* setup the display area */
display_setup (psp);
row = col = 0;
for (; list; list = g_slist_next (list))
{
pattern = (GPattern *) list->data;
/* Display the pattern */
display_pattern (psp, pattern, col, row);
/* increment the counts */
if (++col == psp->NUM_PATTERN_COLUMNS)
{
row ++;
col = 0;
}
}
}
static void
pattern_select_show_selected (PatternSelect *psp,
gint row,
gint col)
{
GdkRectangle area;
guchar * buf;
gint yend;
gint ystart;
gint offset_x, offset_y;
gint i;
buf = g_new (guchar, 3 * psp->cell_width);
if (psp->old_col != col || psp->old_row != row)
{
/* remove the old selection */
offset_x = psp->old_col * psp->cell_width;
offset_y = psp->old_row * psp->cell_height - psp->scroll_offset;
ystart = CLAMP (offset_y , 0, psp->preview->allocation.height);
yend = CLAMP (offset_y + psp->cell_height, 0, psp->preview->allocation.height);
/* set the buf to white */
memset (buf, 255, 3 * psp->cell_width);
for (i = ystart; i < yend; i++)
{
if (i == offset_y || i == (offset_y + psp->cell_height - 1))
gtk_preview_draw_row (GTK_PREVIEW (psp->preview), buf,
offset_x, i, psp->cell_width);
else
{
gtk_preview_draw_row (GTK_PREVIEW (psp->preview), buf,
offset_x, i, 1);
gtk_preview_draw_row (GTK_PREVIEW (psp->preview), buf,
offset_x + psp->cell_width - 1, i, 1);
}
}
area.x = offset_x;
area.y = ystart;
area.width = psp->cell_width;
area.height = yend - ystart;
gtk_widget_draw (psp->preview, &area);
}
/* make the new selection */
offset_x = col * psp->cell_width;
offset_y = row * psp->cell_height - psp->scroll_offset;
ystart = CLAMP (offset_y , 0, psp->preview->allocation.height);
yend = CLAMP (offset_y + psp->cell_height, 0, psp->preview->allocation.height);
/* set the buf to black */
memset (buf, 0, psp->cell_width * 3);
for (i = ystart; i < yend; i++)
{
if (i == offset_y || i == (offset_y + psp->cell_height - 1))
gtk_preview_draw_row (GTK_PREVIEW (psp->preview), buf,
offset_x, i, psp->cell_width);
else
{
gtk_preview_draw_row (GTK_PREVIEW (psp->preview), buf,
offset_x, i, 1);
gtk_preview_draw_row (GTK_PREVIEW (psp->preview), buf,
offset_x + psp->cell_width - 1, i, 1);
}
}
area.x = offset_x;
area.y = ystart;
area.width = psp->cell_width;
area.height = yend - ystart;
gtk_widget_draw (psp->preview, &area);
psp->old_row = row;
psp->old_col = col;
g_free (buf);
}
static void
update_active_pattern_field (PatternSelect *psp)
{
GPattern *pattern;
gchar buf[32];
pattern = gimp_context_get_pattern (psp->context);
if (!pattern)
return;
/* Set pattern name */
gtk_label_set_text (GTK_LABEL (psp->pattern_name), pattern->name);
/* Set pattern size */
g_snprintf (buf, sizeof (buf), "(%d X %d)",
pattern->mask->width, pattern->mask->height);
gtk_label_set_text (GTK_LABEL (psp->pattern_size), buf);
}
static void
preview_calc_scrollbar (PatternSelect *psp)
{
gint num_rows;
gint page_size;
gint max;
psp->scroll_offset = 0;
num_rows = ((num_patterns + psp->NUM_PATTERN_COLUMNS - 1) /
psp->NUM_PATTERN_COLUMNS);
max = num_rows * psp->cell_width;
if (!num_rows)
num_rows = 1;
page_size = psp->preview->allocation.height;
psp->sbar_data->value = psp->scroll_offset;
psp->sbar_data->upper = max;
psp->sbar_data->page_size = (page_size < max) ? page_size : max;
psp->sbar_data->page_increment = (page_size >> 1);
psp->sbar_data->step_increment = psp->cell_width;
gtk_signal_emit_by_name (GTK_OBJECT (psp->sbar_data), "changed");
gtk_signal_emit_by_name (GTK_OBJECT (psp->sbar_data), "value_changed");
}
static gint
pattern_select_resize (GtkWidget *widget,
GdkEvent *event,
PatternSelect *psp)
{
/* calculate the best-fit approximation... */
gint wid;
gint now;
gint cell_size;
wid = widget->allocation.width;
for (now = cell_size = MIN_CELL_SIZE;
now < MAX_CELL_SIZE; ++now)
{
if ((wid % now) < (wid % cell_size)) cell_size = now;
if ((wid % cell_size) == 0)
break;
}
psp->NUM_PATTERN_COLUMNS =
(gint) (wid / cell_size);
psp->NUM_PATTERN_ROWS =
(gint) ((num_patterns + psp->NUM_PATTERN_COLUMNS - 1) /
psp->NUM_PATTERN_COLUMNS);
psp->cell_width = cell_size;
psp->cell_height = cell_size;
/* recalculate scrollbar extents */
preview_calc_scrollbar (psp);
return FALSE;
}
static gint
pattern_select_events (GtkWidget *widget,
GdkEvent *event,
PatternSelect *psp)
{
GdkEventButton *bevent;
GPattern *pattern;
int row, col, index;
switch (event->type)
{
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
col = bevent->x / psp->cell_width;
row = (bevent->y + psp->scroll_offset) / psp->cell_height;
index = row * psp->NUM_PATTERN_COLUMNS + col;
pattern = pattern_list_get_pattern_by_index (pattern_list, index);
if (pattern)
psp->dnd_pattern = pattern;
else
psp->dnd_pattern = gimp_context_get_pattern (psp->context);
if (bevent->button == 1)
{
/* Get the pattern and display the popup pattern preview */
if (pattern)
{
gdk_pointer_grab (psp->preview->window, FALSE,
(GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK),
NULL, NULL, bevent->time);
/* Make this pattern the active pattern */
gimp_context_set_pattern (psp->context, pattern);
/* Show the pattern popup window if the pattern is too large */
if (pattern->mask->width > psp->cell_width ||
pattern->mask->height > psp->cell_height)
{
pattern_popup_open (psp, bevent->x, bevent->y, pattern);
}
}
}
/* wheelmouse support */
else if (bevent->button == 4)
{
GtkAdjustment *adj = psp->sbar_data;
gfloat new_value = adj->value - adj->page_increment / 2;
new_value =
CLAMP (new_value, adj->lower, adj->upper - adj->page_size);
gtk_adjustment_set_value (adj, new_value);
}
else if (bevent->button == 5)
{
GtkAdjustment *adj = psp->sbar_data;
gfloat new_value = adj->value + adj->page_increment / 2;
new_value =
CLAMP (new_value, adj->lower, adj->upper - adj->page_size);
gtk_adjustment_set_value (adj, new_value);
}
break;
case GDK_BUTTON_RELEASE:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
/* Ungrab the pointer */
gdk_pointer_ungrab (bevent->time);
/* Close the brush popup window */
pattern_popup_close (psp);
}
break;
default:
break;
}
return FALSE;
}
static void
pattern_select_scroll_update (GtkAdjustment *adjustment,
gpointer data)
{
PatternSelect *psp;
GPattern *active;
gint row, col, index;
psp = (PatternSelect *) data;
if (psp)
{
psp->scroll_offset = adjustment->value;
display_patterns (psp);
active = gimp_context_get_pattern (psp->context);
if (active)
{
index = active->index;
if (index < 0)
return;
row = index / psp->NUM_PATTERN_COLUMNS;
col = index - row * psp->NUM_PATTERN_COLUMNS;
pattern_select_show_selected (psp, row, col);
}
gtk_widget_draw (psp->preview, NULL);
}
}
static void
pattern_select_close_callback (GtkWidget *widget,
gpointer data)
{
PatternSelect *psp;
psp = (PatternSelect *) data;
if (GTK_WIDGET_VISIBLE (psp->shell))
gtk_widget_hide (psp->shell);
/* Free memory if poping down dialog which is not the main one */
if (psp != pattern_select_dialog)
{
/* Send data back */
pattern_change_callbacks (psp, TRUE);
gtk_widget_destroy (psp->shell);
pattern_select_free (psp);
}
}
static void
pattern_select_refresh_callback (GtkWidget *widget,
gpointer data)
{
PatternSelect *psp;
GSList *list;
/* re-init the pattern list */
patterns_init (FALSE);
for (list = pattern_active_dialogs; list; list = g_slist_next (list))
{
psp = (PatternSelect *) list->data;
/* recalculate scrollbar extents */
preview_calc_scrollbar (psp);
}
}
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