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gimp/app/indicator_area.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 <string.h>
#include "appenv.h"
#include "brush_scale.h"
#include "indicator_area.h"
#include "gimpbrushlist.h"
#define CELL_SIZE 23 /* The size of the previews */
#define CELL_PADDING 2 /* How much between brush and pattern cells */
#define PREVIEW_EVENT_MASK GDK_EXPOSURE_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_BUTTON_RELEASE_MASK | \
GDK_BUTTON1_MOTION_MASK | \
GDK_ENTER_NOTIFY_MASK | \
GDK_LEAVE_NOTIFY_MASK
/* Global variables */
static void
brush_popup_open (GimpBrushP brush, int x, int y);
/* Prototypes */
static void brush_popup_open (GimpBrushP brush, int x, int y);
static gint brush_area_events (GtkWidget *widget, GdkEvent *event);
static void pattern_popup_open (GPatternP brush, int x, int y);
static gint pattern_area_events (GtkWidget *widget, GdkEvent *event);
/* Static variables */
static GtkWidget *indicator_table;
static GtkWidget *brush_preview;
static GtkWidget *pattern_preview;
static GtkWidget *device_bpopup = NULL;
static GtkWidget *device_bpreview = NULL;
static GtkWidget *device_patpopup = NULL;
static GtkWidget *device_patpreview = NULL;
static void
brush_popup_open (GimpBrushP brush,
int x,
int y)
{
gint x_org, y_org;
gint scr_w, scr_h;
gchar *src, *buf;
/* make sure the popup exists and is not visible */
if (device_bpopup == NULL)
{
GtkWidget *frame;
device_bpopup = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_policy (GTK_WINDOW (device_bpopup), FALSE, FALSE, TRUE);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (device_bpopup), frame);
gtk_widget_show (frame);
device_bpreview = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
gtk_container_add (GTK_CONTAINER (frame), device_bpreview);
gtk_widget_show (device_bpreview);
}
else
{
gtk_widget_hide (device_bpopup);
}
/* decide where to put the popup */
gdk_window_get_origin (brush_preview->window, &x_org, &y_org);
scr_w = gdk_screen_width ();
scr_h = gdk_screen_height ();
x = x_org + x - (brush->mask->width >> 1);
y = y_org + y - (brush->mask->height >> 1);
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 (device_bpreview), brush->mask->width, brush->mask->height);
gtk_widget_popup (device_bpopup, x, y);
/* Draw the brush */
buf = g_new (gchar, brush->mask->width);
src = (gchar *)temp_buf_data (brush->mask);
for (y = 0; y < brush->mask->height; y++)
{
for (x = 0; x < brush->mask->width; x++)
buf[x] = 255 - src[x];
gtk_preview_draw_row (GTK_PREVIEW (device_bpreview), (guchar *)buf, 0, y, brush->mask->width);
src += brush->mask->width;
}
g_free(buf);
/* Draw the brush preview */
gtk_widget_draw (device_bpreview, NULL);
}
void
brush_area_update ()
{
guchar buffer[CELL_SIZE];
MaskBuf *brush_buf;
GimpBrushP brush;
unsigned char * src, *s = NULL;
unsigned char *b;
gboolean scale = FALSE;
int width,height;
int offset_x, offset_y;
int yend;
int ystart;
int i, j;
if (no_data || no_interface) return;
brush = get_active_brush();
if (!brush)
{
g_warning("No gimp brush found\n");
return;
}
brush_buf = brush->mask;
if (brush_buf->width > CELL_SIZE || brush_buf->height > CELL_SIZE)
{
double ratio_x = (double)brush_buf->width / CELL_SIZE;
double ratio_y = (double)brush_buf->height / CELL_SIZE;
if (ratio_x >= ratio_y)
brush_buf = brush_scale_mask (brush_buf,
(double)(brush_buf->width) / ratio_x,
(double)(brush_buf->height) / ratio_x);
else
brush_buf = brush_scale_mask (brush_buf,
(double)(brush_buf->width) / ratio_y,
(double)(brush_buf->height) / ratio_y);
scale = TRUE;
}
/* Get the pointer into the brush mask data */
src = mask_buf_data (brush_buf);
/* Limit to cell size */
width = (brush_buf->width > CELL_SIZE) ? CELL_SIZE: brush_buf->width;
height = (brush_buf->height > CELL_SIZE) ? CELL_SIZE: brush_buf->height;
/* Set buffer to white */
memset (buffer, 255, sizeof (buffer));
for (i = 0; i < CELL_SIZE; i++)
gtk_preview_draw_row (GTK_PREVIEW (brush_preview), buffer, 0, i, CELL_SIZE);
offset_x = ((CELL_SIZE - width) >> 1);
offset_y = ((CELL_SIZE - height) >> 1);
ystart = BOUNDS (offset_y, 0, CELL_SIZE);
yend = BOUNDS (offset_y + height, 0, CELL_SIZE);
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 = buffer;
for (j = 0; j < width ; j++)
*b++ = 255 - *s++;
gtk_preview_draw_row (GTK_PREVIEW (brush_preview),
buffer, offset_x, i, width);
src += brush_buf->width;
}
if (scale)
{
offset_y = CELL_SIZE - brush_scale_indicator_height - 1;
for (i = 0; i < brush_scale_indicator_height; i++)
{
offset_x = CELL_SIZE - brush_scale_indicator_width - 1;
gtk_preview_draw_row (GTK_PREVIEW (brush_preview),
brush_scale_indicator_bits[i],
offset_x, offset_y + i,
brush_scale_indicator_width);
}
mask_buf_free (brush_buf);
}
gtk_widget_draw (brush_preview, NULL);
gtk_widget_show (brush_preview);
}
static gint
brush_area_events (GtkWidget *widget,
GdkEvent *event)
{
GdkEventButton *bevent;
GimpBrushP brush;
brush = get_active_brush();
switch (event->type)
{
case GDK_EXPOSE:
break;
case GDK_BUTTON_RELEASE:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
if (device_bpopup != NULL)
gtk_widget_hide (device_bpopup);
gdk_pointer_ungrab (bevent->time);
brush_area_update();
}
break;
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
/* pop up the brush selection dialog accordingly */
create_brush_dialog();
gdk_pointer_grab (widget->window, FALSE,
(GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK),
NULL, NULL, bevent->time);
/* Show the brush popup window if the brush is too large */
if (brush->mask->width > CELL_SIZE ||
brush->mask->height > CELL_SIZE)
brush_popup_open (brush, bevent->x, bevent->y);
}
break;
case GDK_DELETE:
break;
default:
break;
}
return FALSE;
}
void
pattern_area_update ()
{
guchar *buffer = NULL;
TempBuf * pattern_buf;
unsigned char * src, *s = NULL;
unsigned char *b;
int rowstride;
int width,height;
int offset_x, offset_y;
int yend;
int ystart;
int i, j;
GPatternP pattern = NULL;
if (no_data || no_interface) return;
pattern = get_active_pattern();
buffer = g_new (guchar, pattern->mask->width * 3);
pattern_buf = pattern->mask;
/* Limit to cell size */
width = (pattern_buf->width > CELL_SIZE) ? CELL_SIZE: pattern_buf->width;
height = (pattern_buf->height > CELL_SIZE) ? CELL_SIZE: pattern_buf->height;
/* Set buffer to white */
memset(buffer, 255, sizeof(buffer));
for (i = 0; i < CELL_SIZE; i++)
gtk_preview_draw_row (GTK_PREVIEW (pattern_preview), buffer, 0, i, CELL_SIZE);
offset_x = ((CELL_SIZE - width) >> 1);
offset_y = ((CELL_SIZE - height) >> 1);
ystart = BOUNDS (offset_y, 0, CELL_SIZE);
yend = BOUNDS (offset_y + height, 0, CELL_SIZE);
/* Get the pointer into the brush mask data */
rowstride = pattern_buf->width * pattern_buf->bytes;
src = mask_buf_data (pattern_buf) + (ystart - offset_y) * rowstride;
for (i = ystart; i < yend; i++)
{
s = src;
b = buffer;
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 (pattern_preview),
buffer,
offset_x, i, width);
src += rowstride;
}
gtk_widget_draw(pattern_preview, NULL);
gtk_widget_show(pattern_preview);
g_free(buffer);
}
static void
pattern_popup_open (GPatternP pattern,
int x,
int y)
{
gint x_org, y_org;
gint scr_w, scr_h;
gchar *src, *buf;
/* make sure the popup exists and is not visible */
if (device_patpopup == NULL)
{
GtkWidget *frame;
device_patpopup = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_policy (GTK_WINDOW (device_patpopup), FALSE, FALSE, TRUE);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (device_patpopup), frame);
gtk_widget_show (frame);
device_patpreview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_container_add (GTK_CONTAINER (frame), device_patpreview);
gtk_widget_show (device_patpreview);
}
else
{
gtk_widget_hide (device_patpopup);
}
/* decide where to put the popup */
gdk_window_get_origin (pattern_preview->window, &x_org, &y_org);
scr_w = gdk_screen_width ();
scr_h = gdk_screen_height ();
x = x_org + x - (pattern->mask->width >> 1);
y = y_org + y - (pattern->mask->height >> 1);
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 (device_patpreview), pattern->mask->width, pattern->mask->height);
gtk_widget_popup (device_patpopup, 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 (device_patpreview), (guchar *)buf, 0, y, pattern->mask->width);
src += pattern->mask->width * pattern->mask->bytes;
}
g_free(buf);
/* Draw the brush preview */
gtk_widget_draw (device_patpreview, NULL);
}
static gint
pattern_area_events (GtkWidget *widget,
GdkEvent *event)
{
GdkEventButton *bevent;
GPatternP pattern;
pattern = get_active_pattern();
switch (event->type)
{
case GDK_EXPOSE:
break;
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
gdk_pointer_grab (widget->window, FALSE,
(GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK),
NULL, NULL, bevent->time);
create_pattern_dialog();
/* Show the pattern popup window if the pattern is too large */
if (pattern->mask->width > CELL_SIZE ||
pattern->mask->height > CELL_SIZE)
pattern_popup_open (pattern, bevent->x, bevent->y);
}
break;
case GDK_BUTTON_RELEASE:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
gdk_pointer_ungrab (bevent->time);
if (device_patpopup != NULL)
gtk_widget_hide (device_patpopup);
pattern_area_update();
}
break;
case GDK_DELETE:
break;
default:
break;
}
return FALSE;
}
GtkWidget *
indicator_area_create (int width,
int height)
{
/* Put the brush in the table */
indicator_table = gtk_table_new (1,3, FALSE);
brush_preview = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
gtk_preview_size (GTK_PREVIEW (brush_preview), CELL_SIZE, CELL_SIZE);
gtk_widget_set_events (brush_preview, PREVIEW_EVENT_MASK);
gtk_signal_connect (GTK_OBJECT (brush_preview), "event",
(GtkSignalFunc) brush_area_events,
NULL);
gtk_table_attach_defaults (GTK_TABLE(indicator_table), brush_preview,
0, 1, 0, 1);
pattern_preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (pattern_preview), CELL_SIZE, CELL_SIZE);
gtk_widget_set_events (pattern_preview, PREVIEW_EVENT_MASK);
gtk_signal_connect (GTK_OBJECT (pattern_preview), "event",
(GtkSignalFunc) pattern_area_events,
NULL);
gtk_table_attach_defaults (GTK_TABLE(indicator_table), pattern_preview,
1, 2, 0, 1);
brush_area_update();
pattern_area_update();
gtk_widget_show(indicator_table);
return indicator_table;
}
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