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gimp/app/brush_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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "appenv.h"
#include "actionarea.h"
#include "brushes.h"
#include "brush_select.h"
#include "buildmenu.h"
#include "colormaps.h"
#include "disp_callbacks.h"
#include "errors.h"
#include "paint_funcs.h"
#define STD_CELL_WIDTH 24
#define STD_CELL_HEIGHT 24
#define STD_BRUSH_COLUMNS 5
#define STD_BRUSH_ROWS 5
#define MAX_WIN_WIDTH (STD_CELL_WIDTH * NUM_BRUSH_COLUMNS)
#define MAX_WIN_HEIGHT (STD_CELL_HEIGHT * NUM_BRUSH_ROWS)
#define MARGIN_WIDTH 3
#define MARGIN_HEIGHT 3
#define BRUSH_EVENT_MASK GDK_EXPOSURE_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_BUTTON_RELEASE_MASK | \
GDK_BUTTON1_MOTION_MASK | \
GDK_ENTER_NOTIFY_MASK
/* local function prototypes */
static void brush_popup_open (BrushSelectP, int, int, GBrushP);
static void brush_popup_close (BrushSelectP);
static void display_brush (BrushSelectP, GBrushP, int, int);
static void display_brushes (BrushSelectP);
static void display_setup (BrushSelectP);
static void preview_calc_scrollbar (BrushSelectP);
static void brush_select_show_selected (BrushSelectP, int, int);
static void update_active_brush_field (BrushSelectP);
static void brush_select_close_callback (GtkWidget *, gpointer);
static void brush_select_refresh_callback(GtkWidget *, gpointer);
static void paint_mode_menu_callback (GtkWidget *, gpointer);
static gint brush_select_events (GtkWidget *, GdkEvent *, BrushSelectP);
static gint brush_select_resize (GtkWidget *, GdkEvent *, BrushSelectP);
static gint brush_select_delete_callback (GtkWidget *, GdkEvent *, gpointer);
static void preview_scroll_update (GtkAdjustment *, gpointer);
static void opacity_scale_update (GtkAdjustment *, gpointer);
static void spacing_scale_update (GtkAdjustment *, gpointer);
/* the option menu items -- the paint modes */
static MenuItem option_items[] =
{
{ "Normal", 0, 0, paint_mode_menu_callback, (gpointer) NORMAL_MODE, NULL, NULL },
{ "Dissolve", 0, 0, paint_mode_menu_callback, (gpointer) DISSOLVE_MODE, NULL, NULL },
{ "Behind", 0, 0, paint_mode_menu_callback, (gpointer) BEHIND_MODE, NULL, NULL },
{ "Multiply", 0, 0, paint_mode_menu_callback, (gpointer) MULTIPLY_MODE, NULL, NULL },
{ "Screen", 0, 0, paint_mode_menu_callback, (gpointer) SCREEN_MODE, NULL, NULL },
{ "Overlay", 0, 0, paint_mode_menu_callback, (gpointer) OVERLAY_MODE, NULL, NULL },
{ "Difference", 0, 0, paint_mode_menu_callback, (gpointer) DIFFERENCE_MODE, NULL, NULL },
{ "Addition", 0, 0, paint_mode_menu_callback, (gpointer) ADDITION_MODE, NULL, NULL },
{ "Subtract", 0, 0, paint_mode_menu_callback, (gpointer) SUBTRACT_MODE, NULL, NULL },
{ "Darken Only", 0, 0, paint_mode_menu_callback, (gpointer) DARKEN_ONLY_MODE, NULL, NULL },
{ "Lighten Only", 0, 0, paint_mode_menu_callback, (gpointer) LIGHTEN_ONLY_MODE, NULL, NULL },
{ "Hue", 0, 0, paint_mode_menu_callback, (gpointer) HUE_MODE, NULL, NULL },
{ "Saturation", 0, 0, paint_mode_menu_callback, (gpointer) SATURATION_MODE, NULL, NULL },
{ "Color", 0, 0, paint_mode_menu_callback, (gpointer) COLOR_MODE, NULL, NULL },
{ "Value", 0, 0, paint_mode_menu_callback, (gpointer) VALUE_MODE, NULL, NULL },
{ NULL, 0, 0, NULL, NULL, NULL, NULL }
};
/* the action area structure */
static ActionAreaItem action_items[] =
{
{ "Close", brush_select_close_callback, NULL, NULL },
{ "Refresh", brush_select_refresh_callback, NULL, NULL },
};
static double old_opacity;
static int old_spacing;
static int old_paint_mode;
int NUM_BRUSH_COLUMNS=5;
int NUM_BRUSH_ROWS=5;
GtkWidget *
create_paint_mode_menu (MenuItemCallback callback)
{
GtkWidget *menu;
int i;
for (i = 0; i <= VALUE_MODE; i++)
option_items[i].callback = callback;
menu = build_menu (option_items, NULL);
return menu;
}
BrushSelectP
brush_select_new ()
{
BrushSelectP bsp;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *sbar;
GtkWidget *label;
GtkWidget *menu;
GtkWidget *util_box;
GtkWidget *option_menu;
GtkWidget *slider;
GBrushP active;
bsp = g_malloc (sizeof (_BrushSelect));
bsp->redraw = TRUE;
bsp->brush_popup = NULL;
/* The shell and main vbox */
bsp->shell = gtk_dialog_new ();
gtk_window_set_wmclass (GTK_WINDOW (bsp->shell), "brushselection", "Gimp");
gtk_window_set_title (GTK_WINDOW (bsp->shell), "Brush Selection");
gtk_window_set_policy(GTK_WINDOW(bsp->shell), FALSE, TRUE, FALSE);
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_border_width (GTK_CONTAINER (vbox), 2);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (bsp->shell)->vbox), vbox, TRUE, TRUE, 0);
/* handle the wm close signal */
gtk_signal_connect (GTK_OBJECT (bsp->shell), "delete_event",
GTK_SIGNAL_FUNC (brush_select_delete_callback),
bsp);
/* The horizontal box containing preview & scrollbar & options box */
hbox = gtk_hbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);
bsp->frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (bsp->frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (hbox), bsp->frame, TRUE, TRUE, 0);
bsp->sbar_data = GTK_ADJUSTMENT (gtk_adjustment_new (0, 0, MAX_WIN_HEIGHT, 1, 1, MAX_WIN_HEIGHT));
sbar = gtk_vscrollbar_new (bsp->sbar_data);
gtk_signal_connect (GTK_OBJECT (bsp->sbar_data), "value_changed",
(GtkSignalFunc) preview_scroll_update, bsp);
gtk_box_pack_start (GTK_BOX (hbox), sbar, FALSE, FALSE, 0);
/* Create the brush preview window and the underlying image */
/* Get the maximum brush extents */
bsp->cell_width = STD_CELL_WIDTH;
bsp->cell_height = STD_CELL_HEIGHT;
bsp->width = MAX_WIN_WIDTH;
bsp->height = MAX_WIN_HEIGHT;
bsp->preview = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
gtk_preview_size (GTK_PREVIEW (bsp->preview), bsp->width, bsp->height);
gtk_widget_set_events (bsp->preview, BRUSH_EVENT_MASK);
gtk_signal_connect (GTK_OBJECT (bsp->preview), "event",
(GtkSignalFunc) brush_select_events,
bsp);
gtk_signal_connect_after (GTK_OBJECT(bsp->frame), "size_allocate",
(GtkSignalFunc) brush_select_resize,
bsp);
gtk_container_add (GTK_CONTAINER (bsp->frame), bsp->preview);
gtk_widget_show (bsp->preview);
gtk_widget_show (sbar);
gtk_widget_show (bsp->frame);
/* options box */
bsp->options_box = gtk_vbox_new (TRUE, 4);
gtk_box_pack_start (GTK_BOX (hbox), bsp->options_box, TRUE, TRUE, 0);
/* Create the active brush label */
util_box = gtk_hbox_new (FALSE, 5);
gtk_box_pack_start (GTK_BOX (bsp->options_box), util_box, FALSE, FALSE, 0);
bsp->brush_name = gtk_label_new ("Active");
gtk_box_pack_start (GTK_BOX (util_box), bsp->brush_name, FALSE, FALSE, 2);
bsp->brush_size = gtk_label_new ("(0x0)");
gtk_box_pack_start (GTK_BOX (util_box), bsp->brush_size, FALSE, FALSE, 2);
gtk_widget_show (bsp->brush_name);
gtk_widget_show (bsp->brush_size);
gtk_widget_show (util_box);
/* Create the paint mode option menu */
old_paint_mode = get_brush_paint_mode ();
util_box = gtk_hbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (bsp->options_box), util_box, FALSE, FALSE, 0);
label = gtk_label_new ("Mode:");
gtk_box_pack_start (GTK_BOX (util_box), label, FALSE, FALSE, 2);
menu = create_paint_mode_menu (paint_mode_menu_callback);
option_menu = gtk_option_menu_new ();
gtk_box_pack_start (GTK_BOX (util_box), option_menu, FALSE, FALSE, 2);
gtk_widget_show (label);
gtk_widget_show (option_menu);
gtk_widget_show (util_box);
gtk_option_menu_set_menu (GTK_OPTION_MENU (option_menu), menu);
/* Create the opacity scale widget */
old_opacity = get_brush_opacity ();
util_box = gtk_hbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (bsp->options_box), util_box, FALSE, FALSE, 0);
label = gtk_label_new ("Opacity:");
gtk_box_pack_start (GTK_BOX (util_box), label, FALSE, FALSE, 2);
bsp->opacity_data = GTK_ADJUSTMENT (gtk_adjustment_new (100.0, 0.0, 100.0, 1.0, 1.0, 0.0));
slider = gtk_hscale_new (bsp->opacity_data);
gtk_box_pack_start (GTK_BOX (util_box), slider, TRUE, TRUE, 0);
gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
gtk_signal_connect (GTK_OBJECT (bsp->opacity_data), "value_changed",
(GtkSignalFunc) opacity_scale_update, bsp);
gtk_widget_show (label);
gtk_widget_show (slider);
gtk_widget_show (util_box);
/* Create the brush spacing scale widget */
old_spacing = get_brush_spacing ();
util_box = gtk_hbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (bsp->options_box), util_box, FALSE, FALSE, 0);
label = gtk_label_new ("Spacing:");
gtk_box_pack_start (GTK_BOX (util_box), label, FALSE, FALSE, 2);
bsp->spacing_data = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 1000.0, 1.0, 1.0, 0.0));
slider = gtk_hscale_new (bsp->spacing_data);
gtk_box_pack_start (GTK_BOX (util_box), slider, TRUE, TRUE, 0);
gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
gtk_signal_connect (GTK_OBJECT (bsp->spacing_data), "value_changed",
(GtkSignalFunc) spacing_scale_update, bsp);
gtk_widget_show (label);
gtk_widget_show (slider);
gtk_widget_show (util_box);
/* The action area */
action_items[0].user_data = bsp;
action_items[1].user_data = bsp;
build_action_area (GTK_DIALOG (bsp->shell), action_items, 2, 0);
gtk_widget_show (bsp->options_box);
gtk_widget_show (hbox);
gtk_widget_show (vbox);
gtk_widget_show (bsp->shell);
/* calculate the scrollbar */
preview_calc_scrollbar (bsp);
/* render the brushes into the newly created image structure */
display_brushes (bsp);
/* update the active selection */
active = get_active_brush ();
if (active)
{
int old_value = bsp->redraw;
bsp->redraw = FALSE;
brush_select_select (bsp, active->index);
bsp->redraw = old_value;
}
return bsp;
}
void
brush_select_select (BrushSelectP bsp,
int index)
{
int row, col;
update_active_brush_field (bsp);
row = index / NUM_BRUSH_COLUMNS;
col = index - row * NUM_BRUSH_COLUMNS;
brush_select_show_selected (bsp, row, col);
}
void
brush_select_free (BrushSelectP bsp)
{
if (bsp)
{
if (bsp->brush_popup != NULL)
gtk_widget_destroy (bsp->brush_popup);
g_free (bsp);
}
}
/*
* Local functions
*/
static void
brush_popup_open (BrushSelectP bsp,
int x,
int y,
GBrushP brush)
{
gint x_org, y_org;
gint scr_w, scr_h;
gchar *src, *buf;
/* make sure the popup exists and is not visible */
if (bsp->brush_popup == NULL)
{
GtkWidget *frame;
bsp->brush_popup = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_policy (GTK_WINDOW (bsp->brush_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 (bsp->brush_popup), frame);
gtk_widget_show (frame);
bsp->brush_preview = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
gtk_container_add (GTK_CONTAINER (frame), bsp->brush_preview);
gtk_widget_show (bsp->brush_preview);
}
else
{
gtk_widget_hide (bsp->brush_popup);
}
/* decide where to put the popup */
gdk_window_get_origin (bsp->preview->window, &x_org, &y_org);
scr_w = gdk_screen_width ();
scr_h = gdk_screen_height ();
x = x_org + x - brush->mask->width * 0.5;
y = y_org + y - brush->mask->height * 0.5;
x = (x < 0) ? 0 : x;
y = (y < 0) ? 0 : y;
x = (x + brush->mask->width > scr_w) ? scr_w - brush->mask->width : x;
y = (y + brush->mask->height > scr_h) ? scr_h - brush->mask->height : y;
gtk_preview_size (GTK_PREVIEW (bsp->brush_preview), brush->mask->width, brush->mask->height);
gtk_widget_popup (bsp->brush_popup, x, y);
/* Draw the brush */
buf = g_new (gchar, brush->mask->width);
src = temp_buf_data (brush->mask);
for (y = 0; y < brush->mask->height; y++)
{
/* Invert the mask for display. We're doing this because
* a value of 255 in the mask means it is full intensity.
* However, it makes more sense for full intensity to show
* up as black in this brush preview window...
*/
for (x = 0; x < brush->mask->width; x++)
buf[x] = 255 - src[x];
gtk_preview_draw_row (GTK_PREVIEW (bsp->brush_preview), buf, 0, y, brush->mask->width);
src += brush->mask->width;
}
g_free(buf);
/* Draw the brush preview */
gtk_widget_draw (bsp->brush_preview, NULL);
}
static void
brush_popup_close (BrushSelectP bsp)
{
if (bsp->brush_popup != NULL)
gtk_widget_hide (bsp->brush_popup);
}
static void
display_brush (BrushSelectP bsp,
GBrushP brush,
int col,
int row)
{
TempBuf * brush_buf;
unsigned char * src, *s;
unsigned char * buf, *b;
int width, height;
int offset_x, offset_y;
int yend;
int ystart;
int i, j;
buf = (unsigned char *) g_malloc (sizeof (char) * bsp->cell_width);
brush_buf = brush->mask;
/* calculate the offset into the image */
width = (brush_buf->width > bsp->cell_width) ? bsp->cell_width :
brush_buf->width;
height = (brush_buf->height > bsp->cell_height) ? bsp->cell_height :
brush_buf->height;
offset_x = col * bsp->cell_width + ((bsp->cell_width - width) >> 1);
offset_y = row * bsp->cell_height + ((bsp->cell_height - height) >> 1)
- bsp->scroll_offset;
ystart = BOUNDS (offset_y, 0, bsp->preview->requisition.height);
yend = BOUNDS (offset_y + height, 0, bsp->preview->requisition.height);
/* Get the pointer into the brush mask data */
src = mask_buf_data (brush_buf) + (ystart - offset_y) * brush_buf->width;
for (i = ystart; i < yend; i++)
{
/* Invert the mask for display. We're doing this because
* a value of 255 in the mask means it is full intensity.
* However, it makes more sense for full intensity to show
* up as black in this brush preview window...
*/
s = src;
b = buf;
for (j = 0; j < width; j++)
*b++ = 255 - *s++;
gtk_preview_draw_row (GTK_PREVIEW (bsp->preview), buf, offset_x, i, width);
src += brush_buf->width;
}
g_free (buf);
}
static void
display_setup (BrushSelectP bsp)
{
unsigned char * buf;
int i;
buf = (unsigned char *) g_malloc (sizeof (char) * bsp->preview->requisition.width);
/* Set the buffer to white */
memset (buf, 255, bsp->preview->requisition.width);
/* Set the image buffer to white */
for (i = 0; i < bsp->preview->requisition.height; i++)
gtk_preview_draw_row (GTK_PREVIEW (bsp->preview), buf, 0, i, bsp->preview->requisition.width);
g_free (buf);
}
static void
display_brushes (BrushSelectP bsp)
{
GSList * list = brush_list; /* the global brush list */
int row, col;
GBrushP brush;
/* If there are no brushes, insensitize widgets */
if (brush_list == NULL)
{
gtk_widget_set_sensitive (bsp->options_box, FALSE);
return;
}
/* Else, sensitize widgets */
else
gtk_widget_set_sensitive (bsp->options_box, TRUE);
/* setup the display area */
display_setup (bsp);
row = col = 0;
while (list)
{
brush = (GBrushP) list->data;
/* Display the brush */
display_brush (bsp, brush, col, row);
/* increment the counts */
if (++col == NUM_BRUSH_COLUMNS)
{
row ++;
col = 0;
}
list = g_slist_next (list);
}
}
static void
brush_select_show_selected (BrushSelectP bsp,
int row,
int col)
{
GdkRectangle area;
static int old_row = 0;
static int old_col = 0;
unsigned char * buf;
int yend;
int ystart;
int offset_x, offset_y;
int i;
buf = (unsigned char *) g_malloc (sizeof (char) * bsp->cell_width);
if (old_col != col || old_row != row)
{
/* remove the old selection */
offset_x = old_col * bsp->cell_width;
offset_y = old_row * bsp->cell_height - bsp->scroll_offset;
ystart = BOUNDS (offset_y , 0, bsp->preview->requisition.height);
yend = BOUNDS (offset_y + bsp->cell_height, 0, bsp->preview->requisition.height);
/* set the buf to white */
memset (buf, 255, bsp->cell_width);
for (i = ystart; i < yend; i++)
{
if (i == offset_y || i == (offset_y + bsp->cell_height - 1))
gtk_preview_draw_row (GTK_PREVIEW (bsp->preview), buf, offset_x, i, bsp->cell_width);
else
{
gtk_preview_draw_row (GTK_PREVIEW (bsp->preview), buf, offset_x, i, 1);
gtk_preview_draw_row (GTK_PREVIEW (bsp->preview), buf, offset_x + bsp->cell_width - 1, i, 1);
}
}
if (bsp->redraw)
{
area.x = offset_x;
area.y = ystart;
area.width = bsp->cell_width;
area.height = (yend - ystart);
gtk_widget_draw (bsp->preview, &area);
}
}
/* make the new selection */
offset_x = col * bsp->cell_width;
offset_y = row * bsp->cell_height - bsp->scroll_offset;
ystart = BOUNDS (offset_y , 0, bsp->preview->requisition.height);
yend = BOUNDS (offset_y + bsp->cell_height, 0, bsp->preview->requisition.height);
/* set the buf to black */
memset (buf, 0, bsp->cell_width);
for (i = ystart; i < yend; i++)
{
if (i == offset_y || i == (offset_y + bsp->cell_height - 1))
gtk_preview_draw_row (GTK_PREVIEW (bsp->preview), buf, offset_x, i, bsp->cell_width);
else
{
gtk_preview_draw_row (GTK_PREVIEW (bsp->preview), buf, offset_x, i, 1);
gtk_preview_draw_row (GTK_PREVIEW (bsp->preview), buf, offset_x + bsp->cell_width - 1, i, 1);
}
}
if (bsp->redraw)
{
area.x = offset_x;
area.y = ystart;
area.width = bsp->cell_width;
area.height = (yend - ystart);
gtk_widget_draw (bsp->preview, &area);
}
old_row = row;
old_col = col;
g_free (buf);
}
static void
preview_calc_scrollbar (BrushSelectP bsp)
{
int num_rows;
int page_size;
int max;
bsp->scroll_offset = 0;
num_rows = (num_brushes + NUM_BRUSH_COLUMNS - 1) / NUM_BRUSH_COLUMNS;
max = num_rows * bsp->cell_width;
if (!num_rows) num_rows = 1;
page_size = bsp->preview->allocation.height;
bsp->sbar_data->value = bsp->scroll_offset;
bsp->sbar_data->upper = max;
bsp->sbar_data->page_size = (page_size < max) ? page_size : max;
bsp->sbar_data->page_increment = (page_size >> 1);
bsp->sbar_data->step_increment = bsp->cell_width;
gtk_signal_emit_by_name (GTK_OBJECT (bsp->sbar_data), "changed");
}
static gint
brush_select_resize (GtkWidget *widget,
GdkEvent *event,
BrushSelectP bsp)
{
NUM_BRUSH_COLUMNS = (gint)((widget->allocation.width - 4) / STD_CELL_WIDTH);
NUM_BRUSH_ROWS = (num_brushes + NUM_BRUSH_COLUMNS - 1) / NUM_BRUSH_COLUMNS;
bsp->width = widget->allocation.width - 4;
bsp->height = widget->allocation.height - 4;
gtk_preview_size (GTK_PREVIEW (bsp->preview), bsp->width, bsp->height);
/* recalculate scrollbar extents */
preview_calc_scrollbar (bsp);
/* render the patterns into the newly created image structure */
display_brushes (bsp);
/* update the display */
if (bsp->redraw)
gtk_widget_draw (bsp->preview, NULL);
return FALSE;
}
static void
update_active_brush_field (BrushSelectP bsp)
{
GBrushP brush;
char buf[32];
brush = get_active_brush ();
if (!brush)
return;
/* Set brush name */
gtk_label_set (GTK_LABEL (bsp->brush_name), brush->name);
/* Set brush size */
sprintf (buf, "(%d X %d)", brush->mask->width, brush->mask->height);
gtk_label_set (GTK_LABEL (bsp->brush_size), buf);
/* Set brush spacing */
bsp->spacing_data->value = get_brush_spacing ();
gtk_signal_emit_by_name (GTK_OBJECT (bsp->spacing_data), "value_changed");
}
static gint
brush_select_events (GtkWidget *widget,
GdkEvent *event,
BrushSelectP bsp)
{
GdkEventButton *bevent;
GBrushP brush;
int row, col, index;
switch (event->type)
{
case GDK_EXPOSE:
break;
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
col = bevent->x / bsp->cell_width;
row = (bevent->y + bsp->scroll_offset) / bsp->cell_height;
index = row * NUM_BRUSH_COLUMNS + col;
/* Get the brush and display the popup brush preview */
if ((brush = get_brush_by_index (index)))
{
gdk_pointer_grab (bsp->preview->window, FALSE,
(GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK),
NULL, NULL, bevent->time);
/* Make this brush the active brush */
select_brush (brush);
/* Show the brush popup window if the brush is too large */
if (brush->mask->width > bsp->cell_width ||
brush->mask->height > bsp->cell_height)
brush_popup_open (bsp, bevent->x, bevent->y, brush);
}
}
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 */
brush_popup_close (bsp);
}
break;
case GDK_DELETE:
g_warning ("test");
break;
default:
break;
}
return FALSE;
}
static gint
brush_select_delete_callback (GtkWidget *w, GdkEvent *e, gpointer data)
{
brush_select_close_callback (w, data);
return FALSE;
}
static void
brush_select_close_callback (GtkWidget *w,
gpointer client_data)
{
BrushSelectP bsp;
bsp = (BrushSelectP) client_data;
old_paint_mode = get_brush_paint_mode ();
old_opacity = get_brush_opacity ();
old_spacing = get_brush_spacing ();
if (GTK_WIDGET_VISIBLE (bsp->shell))
gtk_widget_hide (bsp->shell);
}
static void
brush_select_refresh_callback (GtkWidget *w,
gpointer client_data)
{
BrushSelectP bsp;
GBrushP active;
bsp = (BrushSelectP) client_data;
/* re-init the brush list */
brushes_init ();
/* recalculate scrollbar extents */
preview_calc_scrollbar (bsp);
/* render the brushes into the newly created image structure */
display_brushes (bsp);
/* update the active selection */
active = get_active_brush ();
if (active)
brush_select_select (bsp, active->index);
/* update the display */
if (bsp->redraw)
gtk_widget_draw (bsp->preview, NULL);
}
static void
preview_scroll_update (GtkAdjustment *adjustment,
gpointer data)
{
BrushSelectP bsp;
GBrushP active;
int row, col;
bsp = data;
if (bsp)
{
bsp->scroll_offset = adjustment->value;
display_brushes (bsp);
active = get_active_brush ();
if (active)
{
row = active->index / NUM_BRUSH_COLUMNS;
col = active->index - row * NUM_BRUSH_COLUMNS;
brush_select_show_selected (bsp, row, col);
}
if (bsp->redraw)
gtk_widget_draw (bsp->preview, NULL);
}
}
static void
paint_mode_menu_callback (GtkWidget *w,
gpointer client_data)
{
set_brush_paint_mode ((long) client_data);
}
static void
opacity_scale_update (GtkAdjustment *adjustment,
gpointer data)
{
set_brush_opacity (adjustment->value / 100.0);
}
static void
spacing_scale_update (GtkAdjustment *adjustment,
gpointer data)
{
set_brush_spacing ((int) adjustment->value);
}
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