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gimp/app/gimpcontextpreview.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpContextPreview Widget
* Copyright (C) 1999 Sven Neumann
*
* 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 "appenv.h"
#include "brush_scale.h"
#include "gimpbrush.h"
#include "gimpbrushpipe.h"
#include "gimpbrushpipeP.h"
#include "gimpcontextpreview.h"
#include "gimpdnd.h"
#include "gradient_header.h"
#include "patterns.h"
#include "temp_buf.h"
#include "libgimp/gimplimits.h"
/* the pixmaps for the [scale|pipe]_indicators */
#define indicator_width 7
#define indicator_height 7
#define WHT {255, 255, 255}
#define BLK { 0, 0, 0}
#define RED {255, 127, 127}
static unsigned char scale_indicator_bits[7][7][3] =
{
{ WHT, WHT, WHT, WHT, WHT, WHT, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, WHT },
{ WHT, BLK, BLK, BLK, BLK, BLK, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, WHT },
{ WHT, WHT, WHT, WHT, WHT, WHT, WHT }
};
static unsigned char pipe_indicator_bits[7][7][3] =
{
{ WHT, WHT, WHT, WHT, WHT, WHT, WHT },
{ WHT, WHT, WHT, WHT, WHT, WHT, RED },
{ WHT, WHT, WHT, WHT, WHT, RED, RED },
{ WHT, WHT, WHT, WHT, RED, RED, RED },
{ WHT, WHT, WHT, RED, RED, RED, RED },
{ WHT, WHT, RED, RED, RED, RED, RED },
{ WHT, RED, RED, RED, RED, RED, RED }
};
static unsigned char scale_pipe_indicator_bits[7][7][3] =
{
{ WHT, WHT, WHT, WHT, WHT, WHT, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, RED },
{ WHT, WHT, WHT, BLK, WHT, RED, RED },
{ WHT, BLK, BLK, BLK, BLK, BLK, RED },
{ WHT, WHT, WHT, BLK, RED, RED, RED },
{ WHT, WHT, RED, BLK, RED, RED, RED },
{ WHT, RED, RED, RED, RED, RED, RED }
};
/* size of the gradient popup */
#define GRADIENT_POPUP_WIDTH 128
#define GRADIENT_POPUP_HEIGHT 32
#define DRAG_PREVIEW_SIZE 32
/* event mask for the context_preview */
#define CONTEXT_PREVIEW_EVENT_MASK (GDK_BUTTON_PRESS_MASK | \
GDK_BUTTON_RELEASE_MASK | \
GDK_ENTER_NOTIFY_MASK | \
GDK_LEAVE_NOTIFY_MASK)
/* shared widgets for the popups */
static GtkWidget *gcp_popup = NULL;
static GtkWidget *gcp_popup_preview = NULL;
static guint gcp_pipe_timer = 0;
static guint gcp_pipe_index = 0;
/* dnd stuff */
static GtkTargetEntry context_preview_target_table[3][1] =
{
{ GIMP_TARGET_BRUSH },
{ GIMP_TARGET_PATTERN },
{ GIMP_TARGET_GRADIENT }
};
static guint n_targets = 1;
/* signals */
enum
{
CLICKED,
LAST_SIGNAL
};
static guint gimp_context_preview_signals[LAST_SIGNAL] = { 0 };
static GtkPreviewClass *parent_class = NULL;
static gpointer gimp_context_preview_get_data (GimpContextPreview *,
gpointer);
static gint gimp_context_preview_button_press_event (GtkWidget *,
GdkEventButton *);
static gint gimp_context_preview_button_release_event (GtkWidget *,
GdkEventButton *);
static void gimp_context_preview_popup_open (GimpContextPreview *,
gint, gint);
static void gimp_context_preview_popup_close (void);
static gboolean gimp_context_preview_data_matches_type (GimpContextPreview *,
gpointer);
static void gimp_context_preview_draw_brush (GimpContextPreview *);
static void gimp_context_preview_draw_brush_popup (GimpContextPreview *);
static gint gimp_context_preview_animate_pipe (GimpContextPreview *);
static void gimp_context_preview_draw_pattern (GimpContextPreview *);
static void gimp_context_preview_draw_pattern_popup (GimpContextPreview *);
static void gimp_context_preview_draw_gradient (GimpContextPreview *);
static void gimp_context_preview_draw_gradient_popup (GimpContextPreview *);
static gint brush_dirty_callback (GimpBrush *, GimpContextPreview *);
static gint brush_rename_callback (GimpBrush *, GimpContextPreview *);
static void
gimp_context_preview_destroy (GtkObject *object)
{
g_return_if_fail (GIMP_IS_CONTEXT_PREVIEW (object));
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gimp_context_preview_class_init (GimpContextPreviewClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
parent_class = gtk_type_class (gtk_preview_get_type ());
gimp_context_preview_signals[CLICKED] =
gtk_signal_new ("clicked",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextPreviewClass, clicked),
gtk_signal_default_marshaller, GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, gimp_context_preview_signals,
LAST_SIGNAL);
class->clicked = NULL;
widget_class->button_press_event = gimp_context_preview_button_press_event;
widget_class->button_release_event = gimp_context_preview_button_release_event;
object_class->destroy = gimp_context_preview_destroy;
}
static void
gimp_context_preview_init (GimpContextPreview *gcp)
{
gcp->data = NULL;
gcp->type = GCP_LAST;
gcp->width = 0;
gcp->height = 0;
gcp->popup_width = 0;
gcp->popup_height = 0;
gcp->show_popup = FALSE;
gcp->show_tooltips = FALSE;
GTK_PREVIEW (gcp)->type = GTK_PREVIEW_COLOR;
GTK_PREVIEW (gcp)->bpp = 3;
GTK_PREVIEW (gcp)->dither = GDK_RGB_DITHER_NORMAL;
gtk_widget_set_events (GTK_WIDGET (gcp), CONTEXT_PREVIEW_EVENT_MASK);
}
GtkType
gimp_context_preview_get_type (void)
{
static GtkType gcp_type = 0;
if (!gcp_type)
{
GtkTypeInfo gcp_info =
{
"GimpContextPreview",
sizeof (GimpContextPreview),
sizeof (GimpContextPreviewClass),
(GtkClassInitFunc) gimp_context_preview_class_init,
(GtkObjectInitFunc) gimp_context_preview_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
gcp_type = gtk_type_unique (gtk_preview_get_type (), &gcp_info);
}
return gcp_type;
}
GtkWidget *
gimp_context_preview_new (GimpContextPreviewType type,
gint width,
gint height,
gboolean show_popup,
gboolean show_tooltips,
GtkSignalFunc drop_data_callback,
gpointer drop_data_data)
{
GimpContextPreview *gcp;
g_return_val_if_fail (type >= 0 && type < GCP_LAST, NULL);
g_return_val_if_fail (width > 0 && height > 0, NULL);
gcp = gtk_type_new (gimp_context_preview_get_type ());
gcp->type = type;
gcp->width = width;
gcp->height = height;
gcp->show_popup = show_popup;
gcp->show_tooltips = show_tooltips;
gtk_preview_size (GTK_PREVIEW (gcp), width, height);
/* drag dest */
gtk_drag_dest_set (GTK_WIDGET (gcp),
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
context_preview_target_table[type], n_targets,
GDK_ACTION_COPY);
switch (type)
{
case GCP_BRUSH:
gimp_dnd_brush_dest_set (GTK_WIDGET (gcp),
(GimpDndDropBrushFunc) drop_data_callback,
drop_data_data);
break;
case GCP_PATTERN:
gimp_dnd_pattern_dest_set (GTK_WIDGET (gcp),
(GimpDndDropPatternFunc) drop_data_callback,
drop_data_data);
break;
case GCP_GRADIENT:
gimp_dnd_gradient_dest_set (GTK_WIDGET (gcp),
(GimpDndDropGradientFunc) drop_data_callback,
drop_data_data);
break;
default:
break;
}
return GTK_WIDGET (gcp);
}
void
gimp_context_preview_update (GimpContextPreview *gcp,
gpointer data)
{
g_return_if_fail (GIMP_IS_CONTEXT_PREVIEW (gcp));
g_return_if_fail (gimp_context_preview_data_matches_type (gcp, data));
if (!gcp->data)
{
if (gcp->show_popup)
gtk_drag_source_set (GTK_WIDGET (gcp),
GDK_BUTTON2_MASK,
context_preview_target_table[gcp->type], n_targets,
GDK_ACTION_COPY);
else
gtk_drag_source_set (GTK_WIDGET (gcp),
GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
context_preview_target_table[gcp->type], n_targets,
GDK_ACTION_COPY);
switch (gcp->type)
{
case GCP_BRUSH:
gimp_dnd_brush_source_set
(GTK_WIDGET (gcp),
(GimpDndDragBrushFunc) gimp_context_preview_get_data,
NULL);
break;
case GCP_PATTERN:
gimp_dnd_pattern_source_set
(GTK_WIDGET (gcp),
(GimpDndDragPatternFunc) gimp_context_preview_get_data,
NULL);
break;
case GCP_GRADIENT:
gimp_dnd_gradient_source_set
(GTK_WIDGET (gcp),
(GimpDndDragGradientFunc) gimp_context_preview_get_data,
NULL);
break;
default:
break;
}
}
if (gcp->data && gcp->type == GCP_BRUSH)
gtk_signal_disconnect_by_data (GTK_OBJECT (gcp->data), gcp);
gcp->data = data;
if (GTK_IS_OBJECT (gcp->data))
gtk_signal_connect (GTK_OBJECT (gcp->data), "destroy",
gtk_widget_destroyed, &gcp->data);
switch (gcp->type)
{
case GCP_BRUSH:
gimp_context_preview_draw_brush (gcp);
gtk_signal_connect (GTK_OBJECT (gcp->data), "dirty",
GTK_SIGNAL_FUNC (brush_dirty_callback), gcp);
gtk_signal_connect (GTK_OBJECT (gcp->data), "rename",
GTK_SIGNAL_FUNC (brush_rename_callback), gcp);
break;
case GCP_PATTERN:
gimp_context_preview_draw_pattern (gcp);
break;
case GCP_GRADIENT:
gimp_context_preview_draw_gradient (gcp);
break;
default:
break;
}
gtk_widget_queue_draw (GTK_WIDGET (gcp));
if (gcp->show_tooltips)
{
gchar *name = NULL;
switch (gcp->type)
{
case GCP_BRUSH:
{
GimpBrush *brush = GIMP_BRUSH (gcp->data);
name = brush->name;
}
break;
case GCP_PATTERN:
{
GPattern *pattern = (GPattern *) (gcp->data);
name = pattern->name;
}
break;
case GCP_GRADIENT:
{
gradient_t *gradient = (gradient_t *) (gcp->data);
name = gradient->name;
}
break;
default:
break;
}
gimp_help_set_help_data (GTK_WIDGET (gcp), name, NULL);
}
}
static gpointer
gimp_context_preview_get_data (GimpContextPreview *gcp,
gpointer data)
{
g_return_val_if_fail (GIMP_IS_CONTEXT_PREVIEW (gcp), NULL);
return gcp->data;
}
static gint
gimp_context_preview_button_press_event (GtkWidget *widget,
GdkEventButton *bevent)
{
if (bevent->button == 1)
{
if (GIMP_CONTEXT_PREVIEW (widget)->show_popup)
{
gdk_pointer_grab (widget->window, FALSE, GDK_BUTTON_RELEASE_MASK,
NULL, NULL, bevent->time);
gimp_context_preview_popup_open (GIMP_CONTEXT_PREVIEW (widget),
bevent->x, bevent->y);
}
gtk_signal_emit_by_name (GTK_OBJECT (widget), "clicked");
}
return FALSE;
}
static gint
gimp_context_preview_button_release_event (GtkWidget *widget,
GdkEventButton *bevent)
{
if (bevent->button == 1 && GIMP_CONTEXT_PREVIEW (widget)->show_popup)
{
gdk_pointer_ungrab (bevent->time);
gimp_context_preview_popup_close ();
}
return FALSE;
}
static void
gimp_context_preview_popup_open (GimpContextPreview *gcp,
gint x,
gint y)
{
gint x_org, y_org;
gint scr_w, scr_h;
g_return_if_fail (gcp != NULL);
if (!gcp->data)
return;
switch (gcp->type)
{
case GCP_BRUSH:
{
GimpBrush *brush = GIMP_BRUSH (gcp->data);
gcp->popup_width = brush->mask->width;
gcp->popup_height = brush->mask->height;
if (GIMP_IS_REALLY_A_BRUSH_PIPE (brush))
{
GimpBrushPipe *pipe = GIMP_BRUSH_PIPE (brush);
gint i;
for (i = 1; i < pipe->nbrushes; i++)
{
brush = GIMP_BRUSH (pipe->brushes[i]);
gcp->popup_width = MAX (gcp->popup_width, brush->mask->width);
gcp->popup_height = MAX (gcp->popup_height, brush->mask->height);
}
}
else if (gcp->popup_width <= gcp->width && gcp->popup_height <= gcp->height)
return;
}
break;
case GCP_PATTERN:
{
GPattern *pattern = (GPattern*)gcp->data;
gcp->popup_width = pattern->mask->width;
gcp->popup_height = pattern->mask->height;
if (gcp->popup_width <= gcp->width && gcp->popup_height <= gcp->height)
return;
}
break;
case GCP_GRADIENT:
gcp->popup_width = GRADIENT_POPUP_WIDTH;
gcp->popup_height = GRADIENT_POPUP_HEIGHT;
if (gcp->popup_width <= gcp->width && gcp->popup_height <= gcp->height)
return;
break;
default:
return;
}
/* make sure the popup exists and is not visible */
if (gcp_popup == NULL)
{
GtkWidget *frame;
gcp_popup = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_policy (GTK_WINDOW (gcp_popup), FALSE, FALSE, TRUE);
gtk_signal_connect (GTK_OBJECT (gcp_popup), "destroy",
gtk_widget_destroyed, &gcp_popup);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (gcp_popup), frame);
gtk_widget_show (frame);
gcp_popup_preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_signal_connect (GTK_OBJECT (gcp_popup_preview), "destroy",
gtk_widget_destroyed, &gcp_popup_preview);
gtk_container_add (GTK_CONTAINER (frame), gcp_popup_preview);
gtk_widget_show (gcp_popup_preview);
}
else
{
gtk_widget_hide (gcp_popup);
}
/* decide where to put the popup */
gdk_window_get_origin (GTK_WIDGET (gcp)->window, &x_org, &y_org);
scr_w = gdk_screen_width ();
scr_h = gdk_screen_height ();
x = x_org + x - (gcp->popup_width >> 1);
y = y_org + y - (gcp->popup_height >> 1);
x = (x < 0) ? 0 : x;
y = (y < 0) ? 0 : y;
x = (x + gcp->popup_width > scr_w) ? scr_w - gcp->popup_width : x;
y = (y + gcp->popup_height > scr_h) ? scr_h - gcp->popup_height : y;
gtk_preview_size (GTK_PREVIEW (gcp_popup_preview), gcp->popup_width, gcp->popup_height);
gtk_widget_popup (gcp_popup, x, y);
switch (gcp->type)
{
case GCP_BRUSH:
gimp_context_preview_draw_brush_popup (gcp);
if (GIMP_IS_REALLY_A_BRUSH_PIPE (gcp->data) && gcp_pipe_timer == 0)
{
gcp_pipe_index = 0;
gcp_pipe_timer = gtk_timeout_add (300, (GtkFunction)gimp_context_preview_animate_pipe, gcp);
}
break;
case GCP_PATTERN:
gimp_context_preview_draw_pattern_popup (gcp);
break;
case GCP_GRADIENT:
gimp_context_preview_draw_gradient_popup (gcp);
break;
default:
break;
}
gtk_widget_queue_draw (gcp_popup_preview);
}
static void
gimp_context_preview_popup_close (void)
{
if (gcp_pipe_timer > 0)
gtk_timeout_remove (gcp_pipe_timer);
gcp_pipe_timer = 0;
if (gcp_popup != NULL)
gtk_widget_hide (gcp_popup);
}
static gboolean
gimp_context_preview_data_matches_type (GimpContextPreview *gcp,
gpointer data)
{
gboolean match = FALSE;
g_return_val_if_fail (GIMP_IS_CONTEXT_PREVIEW (gcp), FALSE);
switch (gcp->type)
{
case GCP_BRUSH:
match = GIMP_IS_BRUSH (data);
break;
case GCP_PATTERN:
case GCP_GRADIENT:
match = data != NULL; /* would be nicer if these were real gtk_objects */
break;
default:
break;
}
return (match);
}
/* brush draw functions */
void
draw_brush (GtkPreview *preview,
GimpBrush *brush,
gint width,
gint height,
gboolean is_popup)
{
gboolean scale = FALSE;
gint brush_width, brush_height;
gint offset_x, offset_y;
TempBuf *mask_buf, *pixmap_buf = NULL;
guchar *mask, *buf, *b;
guchar bg;
gint x, y;
mask_buf = brush->mask;
if (GIMP_IS_BRUSH_PIXMAP (brush))
pixmap_buf = GIMP_BRUSH_PIXMAP (brush)->pixmap_mask;
brush_width = mask_buf->width;
brush_height = mask_buf->height;
if (brush_width > width || brush_height > height)
{
gdouble ratio_x = (gdouble)brush_width / width;
gdouble ratio_y = (gdouble)brush_height / height;
brush_width = (gdouble)brush_width / MAX (ratio_x, ratio_y) + 0.5;
brush_height = (gdouble)brush_height / MAX (ratio_x, ratio_y) + 0.5;
mask_buf = brush_scale_mask (mask_buf, brush_width, brush_height);
if (GIMP_IS_BRUSH_PIXMAP (brush))
{
/* TODO: the scale function should scale the pixmap
and the mask in one run */
pixmap_buf = brush_scale_pixmap (pixmap_buf, brush_width, brush_height);
}
scale = TRUE;
}
offset_x = (width - brush_width) / 2;
offset_y = (height - brush_height) / 2;
mask = temp_buf_data (mask_buf);
buf = g_new (guchar, 3 * width);
memset (buf, 255, 3 * width);
if (GIMP_IS_BRUSH_PIXMAP (brush))
{
guchar *pixmap = temp_buf_data (pixmap_buf);
for (y = 0; y < offset_y; y++)
gtk_preview_draw_row (preview, buf, 0, y, width);
for (y = offset_y; y < brush_height + offset_y; y++)
{
b = buf + 3 * offset_x;
for (x = 0; x < brush_width ; x++)
{
bg = (255 - *mask);
*b++ = bg + (*mask * *pixmap++) / 255;
*b++ = bg + (*mask * *pixmap++) / 255;
*b++ = bg + (*mask * *pixmap++) / 255;
mask++;
}
gtk_preview_draw_row (preview, buf, 0, y, width);
}
memset (buf, 255, 3 * width);
for (y = brush_height + offset_y; y < height; y++)
gtk_preview_draw_row (preview, buf, 0, y, width);
}
else
{
for (y = 0; y < offset_y; y++)
gtk_preview_draw_row (preview, buf, 0, y, width);
for (y = offset_y; y < brush_height + offset_y; y++)
{
b = buf + 3 * offset_x;
for (x = 0; x < brush_width ; x++)
{
bg = 255 - *mask++;
memset (b, bg, 3);
b += 3;
}
gtk_preview_draw_row (preview, buf, 0, y, width);
}
memset (buf, 255, 3 * width);
for (y = brush_height + offset_y; y < height; y++)
gtk_preview_draw_row (preview, buf, 0, y, width);
}
if (scale)
{
offset_x = width - indicator_width;
offset_y = height - indicator_height;
for (y = 0; y < indicator_height; y++)
(GIMP_IS_REALLY_A_BRUSH_PIPE (brush)) ?
gtk_preview_draw_row (preview, scale_pipe_indicator_bits[y][0],
offset_x, offset_y + y, indicator_width) :
gtk_preview_draw_row (preview, scale_indicator_bits[y][0],
offset_x, offset_y + y, indicator_width);
temp_buf_free (mask_buf);
if (GIMP_IS_BRUSH_PIXMAP (brush))
temp_buf_free (pixmap_buf);
}
else if (!is_popup && GIMP_IS_REALLY_A_BRUSH_PIPE (brush))
{
offset_x = width - indicator_width;
offset_y = height - indicator_height;
for (y = 0; y < indicator_height; y++)
gtk_preview_draw_row (preview, pipe_indicator_bits[y][0],
offset_x, offset_y + y, indicator_width);
}
g_free (buf);
}
static void
gimp_context_preview_draw_brush_popup (GimpContextPreview *gcp)
{
GimpBrush *brush;
g_return_if_fail (gcp != NULL && GIMP_IS_BRUSH (gcp->data));
brush = GIMP_BRUSH (gcp->data);
draw_brush (GTK_PREVIEW (gcp_popup_preview), brush,
gcp->popup_width, gcp->popup_height, TRUE);
}
static void
gimp_context_preview_draw_brush (GimpContextPreview *gcp)
{
GimpBrush *brush;
g_return_if_fail (gcp != NULL && GIMP_IS_BRUSH (gcp->data));
brush = GIMP_BRUSH (gcp->data);
draw_brush (GTK_PREVIEW (gcp), brush, gcp->width, gcp->height, FALSE);
}
static gint
gimp_context_preview_animate_pipe (GimpContextPreview *gcp)
{
GimpBrushPipe *pipe;
GimpBrush *brush;
g_return_val_if_fail (gcp != NULL && GIMP_IS_REALLY_A_BRUSH_PIPE (gcp->data), FALSE);
if (gcp_popup != NULL && !GTK_WIDGET_VISIBLE (gcp_popup))
{
gcp_pipe_timer = 0;
return (FALSE);
}
pipe = GIMP_BRUSH_PIPE (gcp->data);
if (++gcp_pipe_index >= pipe->nbrushes)
gcp_pipe_index = 0;
brush = GIMP_BRUSH (pipe->brushes[gcp_pipe_index]);
draw_brush (GTK_PREVIEW (gcp_popup_preview), brush,
gcp->popup_width, gcp->popup_height, TRUE);
gtk_widget_queue_draw (gcp_popup_preview);
return (TRUE);
}
/* brush callbacks */
static gint
brush_dirty_callback (GimpBrush *brush,
GimpContextPreview *gcp)
{
gimp_context_preview_draw_brush (gcp);
gtk_widget_queue_draw (GTK_WIDGET (gcp));
return TRUE;
}
static gint
brush_rename_callback (GimpBrush *brush,
GimpContextPreview *gcp)
{
if (gcp->show_tooltips)
gimp_help_set_help_data (GTK_WIDGET (gcp), brush->name, NULL);
return TRUE;
}
/* pattern draw functions */
void
draw_pattern (GtkPreview *preview,
GPattern *pattern,
gint width,
gint height)
{
gint pattern_width, pattern_height;
guchar *mask, *src, *buf, *b;
gint x, y;
pattern_width = pattern->mask->width;
pattern_height = pattern->mask->height;
mask = temp_buf_data (pattern->mask);
buf = g_new (guchar, 3 * width);
if (pattern->mask->bytes == 1)
{
for (y = 0; y < height; y++)
{
b = buf;
src = mask + (pattern_width * (y % pattern_height));
for (x = 0; x < width ; x++)
{
memset (b, src[x % pattern_width], 3);
b += 3;
}
gtk_preview_draw_row (preview, buf, 0, y, width);
}
}
else
{
for (y = 0; y < height; y++)
{
b = buf;
src = mask + 3 * (pattern_width * (y % pattern_height));
for (x = 0; x < width ; x++)
{
memcpy (b, src + 3 * (x % pattern_width), 3);
b += 3;
}
gtk_preview_draw_row (preview, buf, 0, y, width);
}
}
g_free(buf);
}
static void
gimp_context_preview_draw_pattern_popup (GimpContextPreview *gcp)
{
GPattern *pattern;
g_return_if_fail (gcp != NULL && gcp->data != NULL);
pattern = (GPattern*)(gcp->data);
draw_pattern (GTK_PREVIEW (gcp_popup_preview), pattern,
gcp->popup_width, gcp->popup_height);
}
static void
gimp_context_preview_draw_pattern (GimpContextPreview *gcp)
{
GPattern *pattern;
g_return_if_fail (gcp != NULL && gcp->data != NULL);
pattern = (GPattern*)(gcp->data);
draw_pattern (GTK_PREVIEW (gcp), pattern, gcp->width, gcp->height);
}
/* gradient draw functions */
void
draw_gradient (GtkPreview *preview,
gradient_t *gradient,
gint width,
gint height)
{
guchar *p0, *p1, *even, *odd;
gint x, y;
gdouble dx, cur_x;
gdouble r, g, b, a;
gdouble c0, c1;
dx = 1.0 / (width - 1);
cur_x = 0.0;
p0 = even = g_new (guchar, 3 * width);
p1 = odd = g_new (guchar, 3 * width);
for (x = 0; x < width; x++)
{
gradient_get_color_at (gradient, cur_x, &r, &g, &b, &a);
if ((x / GIMP_CHECK_SIZE_SM) & 1)
{
c0 = GIMP_CHECK_LIGHT;
c1 = GIMP_CHECK_DARK;
}
else
{
c0 = GIMP_CHECK_DARK;
c1 = GIMP_CHECK_LIGHT;
}
*p0++ = (c0 + (r - c0) * a) * 255.0;
*p0++ = (c0 + (g - c0) * a) * 255.0;
*p0++ = (c0 + (b - c0) * a) * 255.0;
*p1++ = (c1 + (r - c1) * a) * 255.0;
*p1++ = (c1 + (g - c1) * a) * 255.0;
*p1++ = (c1 + (b - c1) * a) * 255.0;
cur_x += dx;
}
for (y = 0; y < height; y++)
{
if ((y / GIMP_CHECK_SIZE_SM) & 1)
gtk_preview_draw_row (preview, odd, 0, y, width);
else
gtk_preview_draw_row (preview, even, 0, y, width);
}
g_free (odd);
g_free (even);
}
static void
gimp_context_preview_draw_gradient_popup (GimpContextPreview *gcp)
{
gradient_t *gradient;
g_return_if_fail (gcp != NULL && gcp->data != NULL);
gradient = (gradient_t*)(gcp->data);
draw_gradient (GTK_PREVIEW (gcp_popup_preview), gradient,
gcp->popup_width, gcp->popup_height);
}
static void
gimp_context_preview_draw_gradient (GimpContextPreview *gcp)
{
gradient_t *gradient;
g_return_if_fail (gcp != NULL && gcp->data != NULL);
gradient = (gradient_t*)(gcp->data);
draw_gradient (GTK_PREVIEW (gcp), gradient, gcp->width, gcp->height);
}
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