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gimp/app/about_dialog.c
Sven Neumann c5e7b16d06 Very hackerish attempt to create all three lists of authors 
from one source. The file 'contributors' lists all the names
and is the only one you should dare to edit from now on.


--Sven
2000-07-24 22:11:28 +00:00

631 lines
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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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <gtk/gtk.h>
#include "about_dialog.h"
#include "appenv.h"
#include "authors.h"
#include "gimpdnd.h"
#include "gimphelp.h"
#include "libgimp/gimpfeatures.h"
#include "libgimp/gimpenv.h"
#include "libgimp/gimpintl.h"
#include "libgimp/gimpmath.h"
#include "pixmaps/wilber2.xpm"
#define ANIMATION_STEPS 16
#define ANIMATION_SIZE 2
static gboolean about_dialog_load_logo (GtkWidget *window);
static void about_dialog_destroy (GtkObject *object,
gpointer data);
static void about_dialog_unmap (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static gint about_dialog_logo_expose (GtkWidget *widget,
GdkEventExpose *event,
gpointer data);
static gint about_dialog_button (GtkWidget *widget,
GdkEventButton *event,
gpointer data);
static void about_dialog_tool_drop (GtkWidget *widget,
ToolType tool,
gpointer data);
static gint about_dialog_timer (gpointer data);
static GtkWidget *about_dialog = NULL;
static GtkWidget *logo_area = NULL;
static GtkWidget *scroll_area = NULL;
static GdkPixmap *logo_pixmap = NULL;
static GdkPixmap *scroll_pixmap = NULL;
static guchar *dissolve_map = NULL;
static gint dissolve_width;
static gint dissolve_height;
static gint logo_width = 0;
static gint logo_height = 0;
static gboolean do_animation = FALSE;
static gboolean do_scrolling = FALSE;
static gint scroll_state = 0;
static gint frame = 0;
static gint offset = 0;
static gint timer = 0;
static gchar **scroll_text = authors;
static gint nscroll_texts = sizeof (authors) / sizeof (authors[0]);
static gint scroll_text_widths[sizeof (authors) / sizeof (authors[0])];
static gint cur_scroll_text = 0;
static gint cur_scroll_index = 0;
static gint shuffle_array[sizeof (authors) / sizeof (authors[0])];
/* dnd stuff */
static GtkTargetEntry tool_target_table[] =
{
GIMP_TARGET_TOOL
};
static guint n_tool_targets = (sizeof (tool_target_table) /
sizeof (tool_target_table[0]));
static gchar *drop_text[] =
{
"We are The GIMP." ,
"Prepare to be manipulated.",
"Resistance is futile."
};
void
about_dialog_create (void)
{
GtkWidget *vbox;
GtkWidget *aboutframe;
GtkWidget *label;
GtkWidget *alignment;
GtkStyle *style;
GdkFont *font;
gint max_width;
gint i;
gchar *label_text;
if (!about_dialog)
{
about_dialog = gtk_window_new (GTK_WINDOW_DIALOG);
gtk_window_set_wmclass (GTK_WINDOW (about_dialog), "about_dialog", "Gimp");
gtk_window_set_title (GTK_WINDOW (about_dialog), _("About the GIMP"));
gtk_window_set_policy (GTK_WINDOW (about_dialog), FALSE, FALSE, FALSE);
gtk_window_set_position (GTK_WINDOW (about_dialog), GTK_WIN_POS_CENTER);
gimp_help_connect_help_accel (about_dialog, gimp_standard_help_func,
"dialogs/about.html");
gtk_signal_connect (GTK_OBJECT (about_dialog), "destroy",
GTK_SIGNAL_FUNC (about_dialog_destroy),
NULL);
gtk_signal_connect (GTK_OBJECT (about_dialog), "unmap_event",
GTK_SIGNAL_FUNC (about_dialog_unmap),
NULL);
gtk_signal_connect (GTK_OBJECT (about_dialog), "button_press_event",
GTK_SIGNAL_FUNC (about_dialog_button),
NULL);
/* dnd stuff */
gtk_drag_dest_set (about_dialog,
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
tool_target_table, n_tool_targets,
GDK_ACTION_COPY);
gimp_dnd_tool_dest_set (about_dialog, about_dialog_tool_drop, NULL);
gtk_widget_set_events (about_dialog, GDK_BUTTON_PRESS_MASK);
if (!about_dialog_load_logo (about_dialog))
{
gtk_widget_destroy (about_dialog);
about_dialog = NULL;
return;
}
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 1);
gtk_container_add (GTK_CONTAINER (about_dialog), vbox);
gtk_widget_show (vbox);
aboutframe = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (aboutframe), GTK_SHADOW_IN);
gtk_container_set_border_width (GTK_CONTAINER (aboutframe), 0);
gtk_box_pack_start (GTK_BOX (vbox), aboutframe, TRUE, TRUE, 0);
gtk_widget_show (aboutframe);
logo_area = gtk_drawing_area_new ();
gtk_signal_connect (GTK_OBJECT (logo_area), "expose_event",
GTK_SIGNAL_FUNC (about_dialog_logo_expose),
NULL);
gtk_drawing_area_size (GTK_DRAWING_AREA (logo_area),
logo_width, logo_height);
gtk_widget_set_events (logo_area, GDK_EXPOSURE_MASK);
gtk_container_add (GTK_CONTAINER (aboutframe), logo_area);
gtk_widget_show (logo_area);
gtk_widget_realize (logo_area);
gdk_window_set_background (logo_area->window, &logo_area->style->black);
/* this is a font, provide only one single font definition */
font = gdk_font_load (_("-*-helvetica-medium-r-normal--*-140-*-*-*-*-*-*"));
if (font)
{
style = gtk_style_new ();
gdk_font_unref (style->font);
style->font = font;
gdk_font_ref (style->font);
gtk_widget_push_style (style);
gtk_style_unref (style);
}
label_text = g_strdup_printf (_("Version %s brought to you by"),
GIMP_VERSION);
label = gtk_label_new (label_text);
g_free (label_text);
label_text = NULL;
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, TRUE, 0);
gtk_widget_show (label);
label = gtk_label_new ("Spencer Kimball & Peter Mattis");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, TRUE, 0);
gtk_widget_show (label);
gtk_widget_pop_style ();
alignment = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), alignment, FALSE, TRUE, 0);
gtk_widget_show (alignment);
aboutframe = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (aboutframe), GTK_SHADOW_IN);
gtk_container_set_border_width (GTK_CONTAINER (aboutframe), 0);
gtk_container_add (GTK_CONTAINER (alignment), aboutframe);
gtk_widget_show (aboutframe);
max_width = 0;
for (i = 0; i < nscroll_texts; i++)
{
scroll_text_widths[i] = gdk_string_width (aboutframe->style->font,
scroll_text[i]);
max_width = MAX (max_width, scroll_text_widths[i]);
}
for (i = 0; i < (sizeof (drop_text) / sizeof (drop_text[0])); i++)
{
max_width = MAX (max_width,
gdk_string_width (aboutframe->style->font, drop_text[i]));
}
scroll_area = gtk_drawing_area_new ();
gtk_drawing_area_size (GTK_DRAWING_AREA (scroll_area),
max_width + 10,
aboutframe->style->font->ascent +
aboutframe->style->font->descent);
gtk_widget_set_events (scroll_area, GDK_BUTTON_PRESS_MASK);
gtk_container_add (GTK_CONTAINER (aboutframe), scroll_area);
gtk_widget_show (scroll_area);
label = gtk_label_new (_("Please visit http://www.gimp.org/ for more info"));
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, TRUE, 0);
gtk_widget_show (label);
gtk_widget_realize (scroll_area);
gdk_window_set_background (scroll_area->window,
&scroll_area->style->white);
}
if (!GTK_WIDGET_VISIBLE (about_dialog))
{
gtk_widget_show (about_dialog);
do_animation = TRUE;
do_scrolling = FALSE;
scroll_state = 0;
frame = 0;
offset = 0;
cur_scroll_text = 0;
if (!double_speed)
{
for (i = 0; i < nscroll_texts; i++)
{
shuffle_array[i] = i;
}
for (i = 0; i < nscroll_texts; i++)
{
gint j;
j = rand() % nscroll_texts;
if (i != j)
{
gint t;
t = shuffle_array[j];
shuffle_array[j] = shuffle_array[i];
shuffle_array[i] = t;
}
}
cur_scroll_text = rand() % nscroll_texts;
}
}
else
{
gdk_window_raise (about_dialog->window);
}
}
static gboolean
about_dialog_load_logo (GtkWidget *window)
{
GtkWidget *preview;
GdkGC *gc;
gchar buf[1024];
gchar *filename;
guchar *pixelrow;
FILE *fp;
gint count;
gint i, j, k;
if (logo_pixmap)
return TRUE;
filename = g_strconcat (gimp_data_directory (),
G_DIR_SEPARATOR_S,
"gimp_logo.ppm",
NULL);
fp = fopen (filename, "rb");
g_free (filename);
if (!fp)
return FALSE;
fgets (buf, 1024, fp);
if (strncmp (buf, "P6", 2) != 0)
{
fclose (fp);
return FALSE;
}
fgets (buf, 1024, fp);
fgets (buf, 1024, fp);
sscanf (buf, "%d %d", &logo_width, &logo_height);
fgets (buf, 1024, fp);
if (strncmp (buf, "255", 3) != 0)
{
fclose (fp);
return FALSE;
}
preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (preview), logo_width, logo_height);
pixelrow = g_new (guchar, logo_width * 3);
for (i = 0; i < logo_height; i++)
{
count = fread (pixelrow, sizeof (guchar), logo_width * 3, fp);
if (count != (logo_width * 3))
{
gtk_widget_destroy (preview);
g_free (pixelrow);
fclose (fp);
return FALSE;
}
gtk_preview_draw_row (GTK_PREVIEW (preview), pixelrow, 0, i, logo_width);
}
gtk_widget_realize (window);
logo_pixmap = gdk_pixmap_new (window->window, logo_width, logo_height,
gtk_preview_get_visual ()->depth);
gc = gdk_gc_new (logo_pixmap);
gtk_preview_put (GTK_PREVIEW (preview),
logo_pixmap, gc,
0, 0, 0, 0, logo_width, logo_height);
gdk_gc_destroy (gc);
gtk_widget_unref (preview);
g_free (pixelrow);
fclose (fp);
dissolve_width =
(logo_width / ANIMATION_SIZE) + (logo_width % ANIMATION_SIZE == 0 ? 0 : 1);
dissolve_height =
(logo_height / ANIMATION_SIZE) + (logo_height % ANIMATION_SIZE == 0 ? 0 : 1);
dissolve_map = g_new (guchar, dissolve_width * dissolve_height);
srand (time (NULL));
for (i = 0, k = 0; i < dissolve_height; i++)
for (j = 0; j < dissolve_width; j++, k++)
dissolve_map[k] = rand () % ANIMATION_STEPS;
return TRUE;
}
static void
about_dialog_destroy (GtkObject *object,
gpointer data)
{
about_dialog = NULL;
about_dialog_unmap (NULL, NULL, NULL);
}
static void
about_dialog_unmap (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
if (timer)
{
gtk_timeout_remove (timer);
timer = 0;
}
}
static gint
about_dialog_logo_expose (GtkWidget *widget,
GdkEventExpose *event,
gpointer data)
{
if (do_animation)
{
if (!timer)
{
about_dialog_timer (widget);
timer = gtk_timeout_add (75, about_dialog_timer, NULL);
}
}
else
{
/* If we draw beyond the boundaries of the pixmap, then X
will generate an expose area for those areas, starting
an infinite cycle. We now set allow_grow = FALSE, so
the drawing area can never be bigger than the preview.
Otherwise, it would be necessary to intersect event->area
with the pixmap boundary rectangle. */
gdk_draw_pixmap (widget->window,
widget->style->black_gc,
logo_pixmap,
event->area.x, event->area.y,
event->area.x, event->area.y,
event->area.width, event->area.height);
}
return FALSE;
}
static gint
about_dialog_button (GtkWidget *widget,
GdkEventButton *event,
gpointer data)
{
if (timer)
gtk_timeout_remove (timer);
timer = 0;
frame = 0;
gtk_widget_hide (about_dialog);
return FALSE;
}
static void
about_dialog_tool_drop (GtkWidget *widget,
ToolType tool,
gpointer data)
{
GdkPixmap *pixmap = NULL;
GdkBitmap *mask = NULL;
gint width = 0;
gint height = 0;
gint i;
if (do_animation)
return;
if (timer)
gtk_timeout_remove (timer);
timer = gtk_timeout_add (75, about_dialog_timer, NULL);
frame = 0;
do_animation = TRUE;
do_scrolling = FALSE;
gdk_draw_rectangle (logo_pixmap,
logo_area->style->white_gc,
TRUE,
0, 0,
logo_area->allocation.width,
logo_area->allocation.height);
pixmap =
gdk_pixmap_create_from_xpm_d (widget->window,
&mask,
NULL,
wilber2_xpm);
gdk_window_get_size (pixmap, &width, &height);
if (logo_area->allocation.width >= width &&
logo_area->allocation.height >= height)
{
gint x, y;
x = (logo_area->allocation.width - width) / 2;
y = (logo_area->allocation.height - height) / 2;
gdk_gc_set_clip_mask (logo_area->style->black_gc, mask);
gdk_gc_set_clip_origin (logo_area->style->black_gc, x, y);
gdk_draw_pixmap (logo_pixmap,
logo_area->style->black_gc,
pixmap, 0, 0,
x, y,
width, height);
gdk_gc_set_clip_mask (logo_area->style->black_gc, NULL);
gdk_gc_set_clip_origin (logo_area->style->black_gc, 0, 0);
}
gdk_pixmap_unref (pixmap);
gdk_bitmap_unref (mask);
scroll_text = drop_text;
nscroll_texts = sizeof (drop_text) / sizeof (drop_text[0]);
for (i = 0; i < nscroll_texts; i++)
{
shuffle_array[i] = i;
scroll_text_widths[i] = gdk_string_width (scroll_area->style->font,
scroll_text[i]);
}
scroll_state = 0;
cur_scroll_index = 0;
cur_scroll_text = 0;
offset = 0;
double_speed = TRUE;
}
static gint
about_dialog_timer (gpointer data)
{
gint i, j, k;
gint return_val;
return_val = TRUE;
if (do_animation)
{
if (logo_area->allocation.width != 1)
{
for (i = 0, k = 0; i < dissolve_height; i++)
for (j = 0; j < dissolve_width; j++, k++)
if (frame == dissolve_map[k])
{
gdk_draw_pixmap (logo_area->window,
logo_area->style->black_gc,
logo_pixmap,
j * ANIMATION_SIZE, i * ANIMATION_SIZE,
j * ANIMATION_SIZE, i * ANIMATION_SIZE,
ANIMATION_SIZE, ANIMATION_SIZE);
}
frame += 1;
if (frame == ANIMATION_STEPS)
{
do_animation = FALSE;
do_scrolling = TRUE;
frame = 0;
timer = gtk_timeout_add (75, about_dialog_timer, NULL);
return FALSE;
}
}
}
if (do_scrolling)
{
if (!scroll_pixmap)
scroll_pixmap = gdk_pixmap_new (scroll_area->window,
scroll_area->allocation.width,
scroll_area->allocation.height,
-1);
switch (scroll_state)
{
case 1:
scroll_state = 2;
timer = gtk_timeout_add (700, about_dialog_timer, NULL);
return_val = FALSE;
break;
case 2:
scroll_state = 3;
timer = gtk_timeout_add (75, about_dialog_timer, NULL);
return_val = FALSE;
break;
}
if (offset > (scroll_text_widths[cur_scroll_text] +
scroll_area->allocation.width))
{
scroll_state = 0;
cur_scroll_index += 1;
if (cur_scroll_index == nscroll_texts)
cur_scroll_index = 0;
cur_scroll_text = shuffle_array[cur_scroll_index];
offset = 0;
}
gdk_draw_rectangle (scroll_pixmap,
scroll_area->style->white_gc,
TRUE, 0, 0,
scroll_area->allocation.width,
scroll_area->allocation.height);
gdk_draw_string (scroll_pixmap,
scroll_area->style->font,
scroll_area->style->black_gc,
scroll_area->allocation.width - offset,
scroll_area->style->font->ascent,
scroll_text[cur_scroll_text]);
gdk_draw_pixmap (scroll_area->window,
scroll_area->style->black_gc,
scroll_pixmap, 0, 0, 0, 0,
scroll_area->allocation.width,
scroll_area->allocation.height);
offset += 15;
if (scroll_state == 0)
{
if (offset > ((scroll_area->allocation.width +
scroll_text_widths[cur_scroll_text]) / 2))
{
scroll_state = 1;
offset = (scroll_area->allocation.width +
scroll_text_widths[cur_scroll_text]) / 2;
}
}
}
return return_val;
}
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