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04d8a2eed636d901b6aa69fcb3a4d188e6dbba9a
gimp/app/gui/splash.c
Michael Natterer 62257edb3e app: make sure the GUI appears on the same monitor as the splash 
Manually figure the monitor where the pointer is and pass it to the
splash, the empty image window and to session_restore() explicly.
2014-05-02 21:16:17 +02:00

506 lines
14 KiB
C
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/* GIMP - The GNU 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "gui-types.h"
#include "widgets/gimpwidgets-utils.h"
#include "splash.h"
#include "gimp-intl.h"
/* #define STARTUP_TIMER 1 */
typedef struct
{
GtkWidget *window;
GtkWidget *area;
gint width;
gint height;
GtkWidget *progress;
GdkColor color;
PangoLayout *upper;
gint upper_x;
gint upper_y;
PangoLayout *lower;
gint lower_x;
gint lower_y;
#ifdef STARTUP_TIMER
GTimer *timer;
gdouble last_time;
gchar *text1;
gchar *text2;
#endif
} GimpSplash;
static GimpSplash *splash = NULL;
static void splash_position_layouts (GimpSplash *splash,
const gchar *text1,
const gchar *text2,
GdkRectangle *area);
static gboolean splash_area_expose (GtkWidget *widget,
GdkEventExpose *event,
GimpSplash *splash);
static void splash_rectangle_union (GdkRectangle *dest,
PangoRectangle *pango_rect,
gint offset_x,
gint offset_y);
static gboolean splash_average_text_area (GimpSplash *splash,
GdkPixbuf *pixbuf,
GdkColor *color);
static GdkPixbufAnimation * splash_image_load (gboolean be_verbose);
static GdkPixbufAnimation * splash_image_pick_from_dir (const gchar *dirname,
gboolean be_verbose);
#ifdef STARTUP_TIMER
static void splash_timer_elapsed (const gchar *text1,
const gchar *text2,
gdouble percentage);
#endif
/* public functions */
void
splash_create (gboolean be_verbose,
GdkScreen *screen,
gint monitor)
{
GtkWidget *frame;
GtkWidget *vbox;
GdkPixbufAnimation *pixbuf;
g_return_if_fail (splash == NULL);
g_return_if_fail (GDK_IS_SCREEN (screen));
pixbuf = splash_image_load (be_verbose);
if (! pixbuf)
return;
splash = g_slice_new0 (GimpSplash);
splash->window =
g_object_new (GTK_TYPE_WINDOW,
"type", GTK_WINDOW_TOPLEVEL,
"type-hint", GDK_WINDOW_TYPE_HINT_SPLASHSCREEN,
"title", _("GIMP Startup"),
"role", "gimp-startup",
"screen", screen,
"window-position", GTK_WIN_POS_CENTER,
"resizable", FALSE,
NULL);
g_signal_connect_swapped (splash->window, "delete-event",
G_CALLBACK (exit),
GINT_TO_POINTER (0));
splash->width = MIN (gdk_pixbuf_animation_get_width (pixbuf),
gdk_screen_get_width (screen));
splash->height = MIN (gdk_pixbuf_animation_get_height (pixbuf),
gdk_screen_get_height (screen));
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (splash->window), frame);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
splash->area = gtk_image_new_from_animation (pixbuf);
gtk_box_pack_start (GTK_BOX (vbox), splash->area, TRUE, TRUE, 0);
gtk_widget_show (splash->area);
gtk_widget_set_size_request (splash->area, splash->width, splash->height);
/* create the pango layouts */
splash->upper = gtk_widget_create_pango_layout (splash->area, "");
splash->lower = gtk_widget_create_pango_layout (splash->area, "");
gimp_pango_layout_set_scale (splash->lower, PANGO_SCALE_SMALL);
/* this sets the initial layout positions */
splash_position_layouts (splash, "", "", NULL);
splash_average_text_area (splash,
gdk_pixbuf_animation_get_static_image (pixbuf),
&splash->color);
g_object_unref (pixbuf);
g_signal_connect_after (splash->area, "expose-event",
G_CALLBACK (splash_area_expose),
splash);
/* add a progress bar */
splash->progress = gtk_progress_bar_new ();
gtk_box_pack_end (GTK_BOX (vbox), splash->progress, FALSE, FALSE, 0);
gtk_widget_show (splash->progress);
gtk_widget_show (splash->window);
#ifdef STARTUP_TIMER
splash->timer = g_timer_new ();
#endif
}
void
splash_destroy (void)
{
if (! splash)
return;
gtk_widget_destroy (splash->window);
g_object_unref (splash->upper);
g_object_unref (splash->lower);
#ifdef STARTUP_TIMER
g_timer_destroy (splash->timer);
g_free (splash->text1);
g_free (splash->text2);
#endif
g_slice_free (GimpSplash, splash);
splash = NULL;
}
void
splash_update (const gchar *text1,
const gchar *text2,
gdouble percentage)
{
GdkRectangle expose = { 0, 0, 0, 0 };
g_return_if_fail (percentage >= 0.0 && percentage <= 1.0);
if (! splash)
return;
#ifdef STARTUP_TIMER
splash_timer_elapsed (text1, text2, percentage);
#endif
splash_position_layouts (splash, text1, text2, &expose);
if (expose.width > 0 && expose.height > 0)
gtk_widget_queue_draw_area (splash->area,
expose.x, expose.y,
expose.width, expose.height);
gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (splash->progress),
percentage);
if (gtk_events_pending ())
gtk_main_iteration ();
}
/* private functions */
static gboolean
splash_area_expose (GtkWidget *widget,
GdkEventExpose *event,
GimpSplash *splash)
{
cairo_t *cr = gdk_cairo_create (event->window);
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
gdk_cairo_set_source_color (cr, &splash->color);
cairo_move_to (cr, splash->upper_x, splash->upper_y);
pango_cairo_show_layout (cr, splash->upper);
cairo_move_to (cr, splash->lower_x, splash->lower_y);
pango_cairo_show_layout (cr, splash->lower);
cairo_destroy (cr);
return FALSE;
}
/* area returns the union of the previous and new ink rectangles */
static void
splash_position_layouts (GimpSplash *splash,
const gchar *text1,
const gchar *text2,
GdkRectangle *area)
{
PangoRectangle ink;
PangoRectangle logical;
if (text1)
{
pango_layout_get_pixel_extents (splash->upper, &ink, NULL);
if (area)
splash_rectangle_union (area, &ink, splash->upper_x, splash->upper_y);
pango_layout_set_text (splash->upper, text1, -1);
pango_layout_get_pixel_extents (splash->upper, &ink, &logical);
splash->upper_x = (splash->width - logical.width) / 2;
splash->upper_y = splash->height - (2 * logical.height + 6);
if (area)
splash_rectangle_union (area, &ink, splash->upper_x, splash->upper_y);
}
if (text2)
{
pango_layout_get_pixel_extents (splash->lower, &ink, NULL);
if (area)
splash_rectangle_union (area, &ink, splash->lower_x, splash->lower_y);
pango_layout_set_text (splash->lower, text2, -1);
pango_layout_get_pixel_extents (splash->lower, &ink, &logical);
splash->lower_x = (splash->width - logical.width) / 2;
splash->lower_y = splash->height - (logical.height + 6);
if (area)
splash_rectangle_union (area, &ink, splash->lower_x, splash->lower_y);
}
}
static void
splash_rectangle_union (GdkRectangle *dest,
PangoRectangle *pango_rect,
gint offset_x,
gint offset_y)
{
GdkRectangle rect;
rect.x = pango_rect->x + offset_x;
rect.y = pango_rect->y + offset_y;
rect.width = pango_rect->width;
rect.height = pango_rect->height;
if (dest->width > 0 && dest->height > 0)
gdk_rectangle_union (dest, &rect, dest);
else
*dest = rect;
}
/* This function chooses a gray value for the text color, based on
* the average luminance of the text area of the splash image.
*/
static gboolean
splash_average_text_area (GimpSplash *splash,
GdkPixbuf *pixbuf,
GdkColor *color)
{
const guchar *pixels;
gint rowstride;
gint channels;
gint luminance = 0;
guint sum[3] = { 0, 0, 0 };
GdkRectangle image = { 0, 0, 0, 0 };
GdkRectangle area = { 0, 0, 0, 0 };
g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), FALSE);
g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (pixbuf) == 8, FALSE);
image.width = gdk_pixbuf_get_width (pixbuf);
image.height = gdk_pixbuf_get_height (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
channels = gdk_pixbuf_get_n_channels (pixbuf);
pixels = gdk_pixbuf_get_pixels (pixbuf);
splash_position_layouts (splash, "Short text", "Somewhat longer text", &area);
splash_position_layouts (splash, "", "", NULL);
if (gdk_rectangle_intersect (&image, &area, &area))
{
const gint count = area.width * area.height;
gint x, y;
pixels += area.x * channels;
pixels += area.y * rowstride;
for (y = 0; y < area.height; y++)
{
const guchar *src = pixels;
for (x = 0; x < area.width; x++)
{
sum[0] += src[0];
sum[1] += src[1];
sum[2] += src[2];
src += channels;
}
pixels += rowstride;
}
luminance = GIMP_RGB_LUMINANCE (sum[0] / count,
sum[1] / count,
sum[2] / count);
luminance = CLAMP0255 (luminance > 127 ?
luminance - 223 : luminance + 223);
}
color->red = color->green = color->blue = (luminance << 8 | luminance);
return gdk_colormap_alloc_color (gtk_widget_get_colormap (splash->area),
color, FALSE, TRUE);
}
static GdkPixbufAnimation *
splash_image_load (gboolean be_verbose)
{
GdkPixbufAnimation *pixbuf;
gchar *filename;
filename = gimp_personal_rc_file ("gimp-splash.png");
if (be_verbose)
g_printerr ("Trying splash '%s' ... ", filename);
pixbuf = gdk_pixbuf_animation_new_from_file (filename, NULL);
g_free (filename);
if (be_verbose)
g_printerr (pixbuf ? "OK\n" : "failed\n");
if (pixbuf)
return pixbuf;
filename = gimp_personal_rc_file ("splashes");
pixbuf = splash_image_pick_from_dir (filename, be_verbose);
g_free (filename);
if (pixbuf)
return pixbuf;
filename = g_build_filename (gimp_data_directory (),
"images", "gimp-splash.png", NULL);
if (be_verbose)
g_printerr ("Trying splash '%s' ... ", filename);
pixbuf = gdk_pixbuf_animation_new_from_file (filename, NULL);
g_free (filename);
if (be_verbose)
g_printerr (pixbuf ? "OK\n" : "failed\n");
if (pixbuf)
return pixbuf;
filename = g_build_filename (gimp_data_directory (), "splashes", NULL);
pixbuf = splash_image_pick_from_dir (filename, be_verbose);
g_free (filename);
return pixbuf;
}
static GdkPixbufAnimation *
splash_image_pick_from_dir (const gchar *dirname,
gboolean be_verbose)
{
GdkPixbufAnimation *pixbuf = NULL;
GDir *dir = g_dir_open (dirname, 0, NULL);
if (dir)
{
const gchar *entry;
GList *splashes = NULL;
while ((entry = g_dir_read_name (dir)))
splashes = g_list_prepend (splashes, g_strdup (entry));
g_dir_close (dir);
if (splashes)
{
gint32 i = g_random_int_range (0, g_list_length (splashes));
gchar *filename = g_build_filename (dirname,
g_list_nth_data (splashes, i),
NULL);
if (be_verbose)
g_printerr ("Trying splash '%s' ... ", filename);
pixbuf = gdk_pixbuf_animation_new_from_file (filename, NULL);
g_free (filename);
if (be_verbose)
g_printerr (pixbuf ? "OK\n" : "failed\n");
g_list_free_full (splashes, (GDestroyNotify) g_free);
}
}
return pixbuf;
}
#ifdef STARTUP_TIMER
static void
splash_timer_elapsed (const gchar *text1,
const gchar *text2,
gdouble percentage)
{
gdouble elapsed = g_timer_elapsed (splash->timer, NULL);
if (text1)
{
g_free (splash->text1);
splash->text1 = g_strdup (text1);
}
if (text2)
{
g_free (splash->text2);
splash->text2 = g_strdup (text2);
}
g_printerr ("%8g %8g - %s %g%% - %s\n",
elapsed,
elapsed - splash->last_time,
splash->text1 ? splash->text1 : "",
percentage * 100.0,
splash->text2 ? splash->text2 : "");
splash->last_time = elapsed;
}
#endif
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