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PIKApp/plug-ins/common/animation-play.c

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Initial checkin of Pika from heckimp
2023-09-26 00:35:21 +02:00
/*
* Animation Playback plug-in version 0.99.1
*
* (c) Adam D. Moss : 1997-2000 : adam@gimp.org : adam@foxbox.org
* (c) Mircea Purdea : 2009 : someone_else@exhalus.net
* (c) Jehan : 2012 : jehan at girinstud.io
*
* PIKA - Photo and Image Kooker Application
* 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 <https://www.gnu.org/licenses/>.
*/
/*
* TODO:
* pdb interface - should we bother?
*
* speedups (caching? most bottlenecks seem to be in pixelrgns)
* -> do pixelrgns properly!
*/
#include "config.h"
#include <string.h>
#include <libpika/pika.h>
#undef GDK_DISABLE_DEPRECATED
#include <libpika/pikaui.h>
#include "libpika/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-animationplay"
#define PLUG_IN_BINARY "animation-play"
#define PLUG_IN_ROLE "pika-animation-play"
#define DITHERTYPE GDK_RGB_DITHER_NORMAL
typedef enum
{
DISPOSE_COMBINE = 0x00,
DISPOSE_REPLACE = 0x01
} DisposeType;
typedef struct
{
gint duration_index;
DisposeType default_frame_disposal;
guint32 default_frame_duration;
}
AnimationSettings;
/* for shaping */
typedef struct
{
gint x, y;
} CursorOffset;
struct _PikaPlay
{
PikaPlugIn parent_instance;
GtkApplication *app;
GtkWidget *play_button;
GtkWidget *step_back_button;
GtkWidget *step_button;
GtkWidget *rewind_button;
GMenu *menu;
};
#define PIKA_TYPE_PLAY (pika_play_get_type ())
G_DECLARE_FINAL_TYPE (PikaPlay, pika_play, PIKA, PLAY, PikaPlugIn)
GType play_get_type (void) G_GNUC_CONST;
static void pika_play_finalize (GObject *object);
static GList * play_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * play_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * play_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
Updated with upstream update
2023-10-30 23:55:30 +01:00
PikaProcedureConfig *config,
Initial checkin of Pika from heckimp
2023-09-26 00:35:21 +02:00
gpointer run_data);
static void initialize (PikaPlay *play);
static void on_app_activate (GApplication *gapp,
gpointer user_data);
static GtkWidget * build_dialog (PikaPlay *play,
gchar *imagename);
static void refresh_dialog (gchar *imagename);
static void da_size_callback (GtkWidget *widget,
GtkAllocation *allocation,
gpointer data);
static void sda_realize_callback (GtkWidget *widget,
gpointer data);
static void sda_size_callback (GtkWidget *widget,
GtkAllocation *allocation,
gpointer data);
static void window_destroy (GtkWidget *widget,
PikaPlay *play);
static void step_back_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void play_change_state (GSimpleAction *action,
GVariant *new_state,
gpointer user_data);
static void detach_change_state (GSimpleAction *action,
GVariant *new_state,
gpointer user_data);
static void step_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void rewind_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void refresh_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void help_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void close_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void speed_up_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void speed_down_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void speed_reset_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data);
static void framecombo_changed (GtkWidget *combo,
gpointer data);
static void speedcombo_changed (GtkWidget *combo,
gpointer data);
static void fpscombo_changed (GtkWidget *combo,
gpointer data);
static void zoomcombo_activated (GtkEntry *combo,
gpointer data);
static void zoomcombo_changed (GtkWidget *combo,
gpointer data);
static gboolean repaint_sda (GtkWidget *darea,
cairo_t *cr,
gpointer data);
static gboolean repaint_da (GtkWidget *darea,
cairo_t *cr,
gpointer data);
static void init_frames (PikaPlay *play);
static void render_frame (gint32 whichframe);
static void show_frame (void);
static void update_combobox (void);
static gdouble get_duration_factor (gint index);
static gint get_fps (gint index);
static gdouble get_scale (gint index);
static void update_scale (gdouble scale);
/* tag util functions*/
static gint parse_ms_tag (const gchar *str);
static DisposeType parse_disposal_tag (const gchar *str);
static gboolean is_disposal_tag (const gchar *str,
DisposeType *disposal,
gint *taglength);
static gboolean is_ms_tag (const gchar *str,
gint *duration,
gint *taglength);
static GtkWidget * add_tool_button (GtkWidget *toolbar,
const char *action,
const char *icon,
const char *label,
const char *tooltip);
static void add_tool_separator (GtkWidget *toolbar,
gboolean expand);
G_DEFINE_TYPE (PikaPlay, pika_play, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (PIKA_TYPE_PLAY)
DEFINE_STD_SET_I18N
/* Global widgets'n'stuff */
static GtkWidget *window = NULL;
static GdkWindow *root_win = NULL;
static GtkWidget *progress;
static GtkWidget *speedcombo = NULL;
static GtkWidget *fpscombo = NULL;
static GtkWidget *zoomcombo = NULL;
static GtkWidget *frame_disposal_combo = NULL;
static PikaImage *image = NULL;
static guint width = -1;
static guint height = -1;
static GList *layers = NULL;
static GtkWidget *drawing_area = NULL;
static cairo_surface_t *drawing_area_surface = NULL;
static guint drawing_area_width = -1;
static guint drawing_area_height = -1;
static GtkWidget *shape_window = NULL;
static cairo_surface_t *shape_drawing_area_surface= NULL;
static guint shape_drawing_area_width = -1;
static guint shape_drawing_area_height = -1;
static gint32 total_frames = 0;
static PikaLayer **frames = NULL;
static guint32 *frame_durations = NULL;
static guint frame_number = 0;
static gboolean playing = FALSE;
static guint timer = 0;
static gboolean detached = FALSE;
static gdouble scale, shape_scale;
static const GActionEntry ACTIONS[] =
{
{ "play", NULL, NULL, "false", play_change_state },
{ "detach", NULL, NULL, "false", detach_change_state },
{ "step-back", step_back_action },
{ "step", step_action },
{ "rewind", rewind_action },
{ "refresh", refresh_action },
{ "help", help_action },
{ "close", close_action },
{ "quit", close_action },
{ "speed-up", speed_up_action },
{ "speed-down", speed_down_action },
{ "speed-reset", speed_reset_action },
};
/* Default settings. */
static AnimationSettings settings =
{
3,
DISPOSE_COMBINE,
100 /* ms */
};
static PikaImage *frames_image = NULL;
static void
pika_play_class_init (PikaPlayClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = pika_play_finalize;
plug_in_class->query_procedures = play_query_procedures;
plug_in_class->create_procedure = play_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
pika_play_init (PikaPlay *play)
{
}
static void
pika_play_finalize (GObject *object)
{
PikaPlay *play = PIKA_PLAY (object);
G_OBJECT_CLASS (pika_play_parent_class)->finalize (object);
g_clear_object (&play->menu);
}
static GList *
play_query_procedures (PikaPlugIn *plug_in)
{
return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
}
static PikaProcedure *
play_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, PLUG_IN_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
play_run, NULL, NULL);
pika_procedure_set_image_types (procedure, "*");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE |
PIKA_PROCEDURE_SENSITIVE_DRAWABLES |
PIKA_PROCEDURE_SENSITIVE_NO_DRAWABLES);
pika_procedure_set_menu_label (procedure, _("_Playback..."));
pika_procedure_set_icon_name (procedure, "media-playback-start");
pika_procedure_add_menu_path (procedure, "<Image>/Filters/Animation/");
pika_procedure_set_documentation (procedure,
_("Preview a PIKA layer-based "
"animation"),
"",
name);
pika_procedure_set_attribution (procedure,
"Adam D. Moss <adam@gimp.org>",
"Adam D. Moss <adam@gimp.org>",
"1997, 1998...");
Updated with upstream update
2023-10-30 23:55:30 +01:00
PIKA_PROC_AUX_ARG_BYTES (procedure, "settings-data",
"Settings data",
"TODO: eventually we must implement proper args for every settings",
PIKA_PARAM_READWRITE);
Initial checkin of Pika from heckimp
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}
return procedure;
}
static PikaValueArray *
play_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *_image,
gint n_drawables,
PikaDrawable **drawables,
Updated with upstream update
2023-10-30 23:55:30 +01:00
PikaProcedureConfig *config,
Initial checkin of Pika from heckimp
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gpointer run_data)
{
Updated with upstream update
2023-10-30 23:55:30 +01:00
GBytes *settings_bytes = NULL;
Initial checkin of Pika from heckimp
2023-09-26 00:35:21 +02:00
GMenu *section;
PikaPlay *play;
Updated with upstream update
2023-10-30 23:55:30 +01:00
if (run_mode != PIKA_RUN_INTERACTIVE)
{
GError *error = NULL;
g_set_error (&error, PIKA_PLUG_IN_ERROR, 0,
_("Procedure '%s' only works in interactive mode."),
pika_procedure_get_name (procedure));
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CALLING_ERROR,
error);
}
Initial checkin of Pika from heckimp
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play = PIKA_PLAY (pika_procedure_get_plug_in (procedure));
#if GLIB_CHECK_VERSION(2,74,0)
play->app = gtk_application_new (NULL, G_APPLICATION_DEFAULT_FLAGS);
#else
play->app = gtk_application_new (NULL, G_APPLICATION_FLAGS_NONE);
#endif
play->menu = g_menu_new ();
section = g_menu_new ();
g_menu_append (section, _("Start playback"), "win.play");
g_menu_append (section, _("Step back to previous frame"), "win.step-back");
g_menu_append (section, _("Step to next frame"), "win.step");
g_menu_append (section, _("Rewind the animation"), "win.rewind");
g_menu_append_section (play->menu, NULL, G_MENU_MODEL (section));
g_clear_object (&section);
section = g_menu_new ();
g_menu_append (section, _("Increase the speed of the animation"), "win.speed-down");
g_menu_append (section, _("Decrease the speed of the animation"), "win.speed-up");
g_menu_append (section, _("Reset the speed of the animation"), "win.speed-reset");
g_menu_append_section (play->menu, NULL, G_MENU_MODEL (section));
g_clear_object (&section);
section = g_menu_new ();
g_menu_append (section, _("Detach the animation from the dialog window"), "win.detach");
g_menu_append (section, _("Reload the image"), "win.refresh");
g_menu_append (section, _("Quit"), "win.close");
g_menu_append_section (play->menu, NULL, G_MENU_MODEL (section));
g_clear_object (&section);
gegl_init (NULL, NULL);
image = _image;
Updated with upstream update
2023-10-30 23:55:30 +01:00
/* Temporary code replacing legacy pika_[gs]et_data() using an AUX argument.
* This doesn't actually fix the "Reset to initial values|factory defaults"
* features, but at least makes per-run value storage work.
* TODO: eventually we want proper separate arguments as a complete fix.
*/
g_object_get (config, "settings-data", &settings_bytes, NULL);
if (settings_bytes != NULL && g_bytes_get_size (settings_bytes) == sizeof (AnimationSettings))
settings = *((AnimationSettings *) g_bytes_get_data (settings_bytes, NULL));
g_bytes_unref (settings_bytes);
Initial checkin of Pika from heckimp
2023-09-26 00:35:21 +02:00
g_signal_connect (play->app, "activate", G_CALLBACK (on_app_activate), play);
g_application_run (G_APPLICATION (play->app), 0, NULL);
g_clear_object (&play->app);
Updated with upstream update
2023-10-30 23:55:30 +01:00
settings_bytes = g_bytes_new (&settings, sizeof (AnimationSettings));
g_object_set (config, "settings-data", settings_bytes, NULL);
g_bytes_unref (settings_bytes);
Initial checkin of Pika from heckimp
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if (run_mode != PIKA_RUN_NONINTERACTIVE)
pika_displays_flush ();
pika_image_delete (frames_image);
gegl_exit ();
return pika_procedure_new_return_values (procedure, PIKA_PDB_SUCCESS, NULL);
}
static gboolean
popup_menu (GtkWidget *widget,
GdkEventButton *event,
PikaPlay *play)
{
GtkWidget *menu;
menu = gtk_menu_new_from_model (G_MENU_MODEL (play->menu));
gtk_menu_attach_to_widget (GTK_MENU (menu), window, NULL);
gtk_menu_popup_at_pointer (GTK_MENU (menu), (GdkEvent *) event);
return TRUE;
}
static gboolean
button_press (GtkWidget *widget,
GdkEventButton *event,
PikaPlay *play)
{
if (gdk_event_triggers_context_menu ((GdkEvent *) event))
return popup_menu (widget, event, play);
return FALSE;
}
/*
* Update the actual drawing area metrics, which may be different as requested,
* because there is no full control of the WM.
* data is always NULL. */
static void
da_size_callback (GtkWidget *widget,
GtkAllocation *allocation,
gpointer data)
{
if (allocation->width == drawing_area_width &&
allocation->height == drawing_area_height)
return;
drawing_area_width = allocation->width;
drawing_area_height = allocation->height;
scale = MIN ((gdouble) drawing_area_width / (gdouble) width,
(gdouble) drawing_area_height / (gdouble) height);
if (! detached)
{
/* Update the zoom information. */
GtkEntry *zoomcombo_text_child;
zoomcombo_text_child = GTK_ENTRY (gtk_bin_get_child (GTK_BIN (zoomcombo)));
if (zoomcombo_text_child)
{
char* new_entry_text = g_strdup_printf (_("%.1f %%"), scale * 100.0);
gtk_entry_set_text (zoomcombo_text_child, new_entry_text);
g_free (new_entry_text);
}
/* As we re-allocated the drawn data, let's render it again. */
if (frame_number < total_frames)
render_frame (frame_number);
}
else
{
/* Set "alpha grid" background. */
gtk_widget_queue_draw (drawing_area);
}
}
static void
sda_realize_callback (GtkWidget *widget,
gpointer data)
{
GdkCursor *cursor;
cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
GDK_HAND2);
gdk_window_set_cursor (gtk_widget_get_window (widget), cursor);
g_object_unref (cursor);
}
/*
* Update the actual shape drawing area metrics, which may be
* different as requested, They *should* be the same as the drawing
* area, but the safe way is to make sure and process it separately.
* data is always NULL.
*/
static void
sda_size_callback (GtkWidget *widget,
GtkAllocation *allocation,
gpointer data)
{
if (allocation->width == shape_drawing_area_width &&
allocation->height == shape_drawing_area_height)
return;
shape_drawing_area_width = allocation->width;
shape_drawing_area_height = allocation->height;
shape_scale = MIN ((gdouble) shape_drawing_area_width / (gdouble) width,
(gdouble) shape_drawing_area_height / (gdouble) height);
if (detached)
{
/* Update the zoom information. */
GtkEntry *zoomcombo_text_child;
zoomcombo_text_child = GTK_ENTRY (gtk_bin_get_child (GTK_BIN (zoomcombo)));
if (zoomcombo_text_child)
{
char* new_entry_text = g_strdup_printf (_("%.1f %%"),
shape_scale * 100.0);
gtk_entry_set_text (zoomcombo_text_child, new_entry_text);
g_free (new_entry_text);
}
if (frame_number < total_frames)
render_frame (frame_number);
}
}
static gboolean
shape_pressed (GtkWidget *widget,
GdkEventButton *event,
PikaPlay *play)
{
if (button_press (widget, event, play))
return TRUE;
/* ignore double and triple click */
if (event->type == GDK_BUTTON_PRESS)
{
CursorOffset *p = g_object_get_data (G_OBJECT(widget), "cursor-offset");
if (!p)
return FALSE;
p->x = (gint) event->x;
p->y = (gint) event->y;
gtk_grab_add (widget);
gdk_pointer_grab (gtk_widget_get_window (widget), TRUE,
GDK_BUTTON_RELEASE_MASK |
GDK_BUTTON_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK,
NULL, NULL, 0);
gdk_window_raise (gtk_widget_get_window (widget));
}
return FALSE;
}
static gboolean
shape_released (GtkWidget *widget)
{
gtk_grab_remove (widget);
gdk_display_pointer_ungrab (gtk_widget_get_display (widget), 0);
gdk_display_flush (gtk_widget_get_display (widget));
return FALSE;
}
static gboolean
shape_motion (GtkWidget *widget,
GdkEventMotion *event)
{
GdkModifierType mask;
gint xp, yp;
gdk_window_get_device_position (root_win,
gdk_event_get_device ((GdkEvent *) event),
&xp, &yp, &mask);
/* if a button is still held by the time we process this event... */
if (mask & GDK_BUTTON1_MASK)
{
CursorOffset *p = g_object_get_data (G_OBJECT (widget), "cursor-offset");
if (!p)
return FALSE;
gtk_window_move (GTK_WINDOW (widget), xp - p->x, yp - p->y);
}
else /* the user has released all buttons */
{
shape_released (widget);
}
return FALSE;
}
static gboolean
repaint_da (GtkWidget *darea,
cairo_t *cr,
gpointer data)
{
cairo_pattern_t *check;
PikaRGB light = *(pika_check_custom_color1 ());
PikaRGB dark = *(pika_check_custom_color2 ());
pika_checks_get_colors (pika_check_type (), &light, &dark);
check = pika_cairo_checkerboard_create (cr, 32, &light, &dark);
cairo_set_source (cr, check);
cairo_paint (cr);
cairo_pattern_destroy (check);
cairo_set_source_surface (cr, drawing_area_surface, 0, 0);
cairo_paint (cr);
return FALSE;
}
static gboolean
repaint_sda (GtkWidget *darea,
cairo_t *cr,
gpointer data)
{
gboolean rgba;
rgba = gdk_screen_get_rgba_visual (gtk_widget_get_screen (darea)) != NULL;
if (rgba)
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_surface (cr, shape_drawing_area_surface, 0, 0);
cairo_paint (cr);
return FALSE;
}
static void
refresh_dialog (gchar *imagename)
{
gchar *name;
GdkMonitor *monitor;
GdkRectangle workarea;
gint window_width, window_height;
/* Image Name */
name = g_strconcat (_("Animation Playback:"), " ", imagename, NULL);
gtk_window_set_title (GTK_WINDOW (window), name);
g_free (name);
/* Update GUI size. */
monitor = pika_widget_get_monitor (window);
gdk_monitor_get_workarea (monitor, &workarea);
gtk_window_get_size (GTK_WINDOW (window), &window_width, &window_height);
/* if the *window* size is bigger than the screen size,
* diminish the drawing area by as much, then compute the corresponding scale. */
if (window_width + 50 > workarea.width ||
window_height + 50 > workarea.height)
{
guint expected_drawing_area_width = MAX (1,
width -
window_width + workarea.width);
guint expected_drawing_area_height = MAX (1,
height -
window_height + workarea.height);
gdouble expected_scale = MIN ((gdouble) expected_drawing_area_width /
(gdouble) width,
(gdouble) expected_drawing_area_height /
(gdouble) height);
update_scale (expected_scale);
/* There is unfortunately no good way to know the size of the decorations, taskbars, etc.
* So we take a wild guess by making the window slightly smaller to fit into any case. */
gtk_window_set_default_size (GTK_WINDOW (window),
MIN (expected_drawing_area_width + 20,
workarea.width - 60),
MIN (expected_drawing_area_height + 90,
workarea.height - 60));
gtk_widget_show (window);
}
}
static GtkWidget *
build_dialog (PikaPlay *play,
gchar *imagename)
{
GtkWidget *toolbar;
GtkWidget *frame;
GtkWidget *viewport;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *hbox;
GdkVisual *rgba;
GAction *action;
gint index;
gchar *text;
pika_ui_init (PLUG_IN_BINARY);
window = gtk_application_window_new (play->app);
gtk_window_set_role (GTK_WINDOW (window), "animation-playback");
g_signal_connect (window, "destroy",
G_CALLBACK (window_destroy),
play);
g_signal_connect (window, "popup-menu",
G_CALLBACK (popup_menu),
play);
g_action_map_add_action_entries (G_ACTION_MAP (window),
ACTIONS, G_N_ELEMENTS (ACTIONS),
play);
pika_help_connect (window, pika_standard_help_func, PLUG_IN_PROC, NULL, NULL);
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add (GTK_CONTAINER (window), main_vbox);
gtk_widget_show (main_vbox);
toolbar = gtk_toolbar_new ();
play->play_button = add_tool_button (toolbar, "win.play", "media-playback-start",
NULL, _("Start playback"));
play->step_back_button = add_tool_button (toolbar, "win.step-back", "media-skip-backward",
_("Step _back"), _("Step back to previous frame"));
play->step_button = add_tool_button (toolbar, "win.step", "media-skip-forward",
_("_Step"), _("Step to next frame"));
play->rewind_button = add_tool_button (toolbar, "win.rewind", "media-seek-backward",
NULL, _("Rewind the animation"));
add_tool_separator (toolbar, FALSE);
add_tool_button (toolbar, "win.detach", PIKA_ICON_DETACH,
_("Detach"), _("Detach the animation from the dialog window"));
add_tool_button (toolbar, "win.refresh", PIKA_ICON_VIEW_REFRESH,
NULL, _("Reload the image"));
add_tool_separator (toolbar, TRUE);
add_tool_button (toolbar, "win.help", "help-browser",
NULL, NULL);
gtk_box_pack_start (GTK_BOX (main_vbox), toolbar, FALSE, FALSE, 0);
gtk_widget_show (toolbar);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_box_pack_start (GTK_BOX (main_vbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
frame = gtk_scrolled_window_new (NULL, NULL);
gtk_widget_set_hexpand (frame, TRUE);
gtk_widget_set_vexpand (frame, TRUE);
gtk_container_add (GTK_CONTAINER (vbox), frame);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (frame),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_widget_show (frame);
viewport = gtk_viewport_new (NULL, NULL);
gtk_container_add (GTK_CONTAINER (frame), viewport);
gtk_widget_show (viewport);
/* Build a drawing area, with a default size same as the image */
drawing_area = gtk_drawing_area_new ();
gtk_widget_add_events (drawing_area, GDK_BUTTON_PRESS_MASK);
gtk_container_add (GTK_CONTAINER (viewport), drawing_area);
gtk_widget_show (drawing_area);
g_signal_connect (drawing_area, "size-allocate",
G_CALLBACK(da_size_callback),
NULL);
g_signal_connect (drawing_area, "button-press-event",
G_CALLBACK (button_press),
play);
/* Lower option bar. */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
/* Progress bar. */
progress = gtk_progress_bar_new ();
gtk_box_pack_end (GTK_BOX (hbox), progress, TRUE, TRUE, 0);
gtk_widget_show (progress);
/* Zoom */
zoomcombo = gtk_combo_box_text_new_with_entry ();
gtk_box_pack_end (GTK_BOX (hbox), zoomcombo, FALSE, FALSE, 0);
gtk_widget_show (zoomcombo);
for (index = 0; index < 5; index++)
{
/* list is given in "fps" - frames per second */
text = g_strdup_printf (_("%.1f %%"), get_scale (index) * 100.0);
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (zoomcombo), text);
g_free (text);
}
gtk_combo_box_set_active (GTK_COMBO_BOX (zoomcombo), 2); /* 1.0 by default. */
g_signal_connect (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (zoomcombo))),
"activate",
G_CALLBACK (zoomcombo_activated),
NULL);
g_signal_connect (zoomcombo, "changed",
G_CALLBACK (zoomcombo_changed),
NULL);
pika_help_set_help_data (zoomcombo, _("Zoom"), NULL);
/* fps combo */
fpscombo = gtk_combo_box_text_new ();
gtk_box_pack_end (GTK_BOX (hbox), fpscombo, FALSE, FALSE, 0);
gtk_widget_show (fpscombo);
for (index = 0; index < 9; index++)
{
/* list is given in "fps" - frames per second */
text = g_strdup_printf (_("%d fps"), get_fps (index));
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (fpscombo), text);
g_free (text);
if (settings.default_frame_duration == 1000 / get_fps(index))
gtk_combo_box_set_active (GTK_COMBO_BOX (fpscombo), index);
}
g_signal_connect (fpscombo, "changed",
G_CALLBACK (fpscombo_changed),
NULL);
pika_help_set_help_data (fpscombo, _("Default framerate"), NULL);
/* Speed Combo */
speedcombo = gtk_combo_box_text_new ();
gtk_box_pack_end (GTK_BOX (hbox), speedcombo, FALSE, FALSE, 0);
gtk_widget_show (speedcombo);
for (index = 0; index < 7; index++)
{
text = g_strdup_printf ("%g\303\227", (100 / get_duration_factor (index)) / 100);
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (speedcombo), text);
g_free (text);
}
gtk_combo_box_set_active (GTK_COMBO_BOX (speedcombo), settings.duration_index);
g_signal_connect (speedcombo, "changed",
G_CALLBACK (speedcombo_changed),
NULL);
pika_help_set_help_data (speedcombo, _("Playback speed"), NULL);
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-reset");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action), FALSE);
/* Set up the frame disposal combo. */
frame_disposal_combo = gtk_combo_box_text_new ();
/* 2 styles of default frame disposals: cumulative layers and one
* frame per layer.
*/
text = g_strdup (_("Cumulative layers (combine)"));
gtk_combo_box_text_insert_text (GTK_COMBO_BOX_TEXT (frame_disposal_combo),
DISPOSE_COMBINE, text);
g_free (text);
text = g_strdup (_("One frame per layer (replace)"));
gtk_combo_box_text_insert_text (GTK_COMBO_BOX_TEXT (frame_disposal_combo),
DISPOSE_REPLACE, text);
g_free (text);
gtk_combo_box_set_active (GTK_COMBO_BOX (frame_disposal_combo),
settings.default_frame_disposal);
g_signal_connect (frame_disposal_combo, "changed",
G_CALLBACK (framecombo_changed),
play);
gtk_box_pack_end (GTK_BOX (hbox), frame_disposal_combo, FALSE, FALSE, 0);
gtk_widget_show (frame_disposal_combo);
gtk_window_set_resizable (GTK_WINDOW (window), TRUE);
gtk_window_set_default_size (GTK_WINDOW (window), width + 20, height + 90);
gtk_widget_show (window);
/* shape_drawing_area for detached feature. */
shape_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_set_app_paintable (shape_window, TRUE);
gtk_window_set_resizable (GTK_WINDOW (shape_window), FALSE);
gtk_window_set_decorated (GTK_WINDOW (shape_window), FALSE);
gtk_widget_add_events (shape_window, GDK_BUTTON_PRESS_MASK);
rgba = gdk_screen_get_rgba_visual (gdk_screen_get_default ());
if (rgba && gdk_screen_is_composited (gdk_screen_get_default ()))
gtk_widget_set_visual (shape_window, rgba);
g_signal_connect (shape_window, "realize",
G_CALLBACK (sda_realize_callback),
NULL);
g_signal_connect (shape_window, "size-allocate",
G_CALLBACK (sda_size_callback),
NULL);
g_signal_connect (shape_window, "button-press-event",
G_CALLBACK (shape_pressed),
play);
g_signal_connect (shape_window, "button-release-event",
G_CALLBACK (shape_released),
NULL);
g_signal_connect (shape_window, "motion-notify-event",
G_CALLBACK (shape_motion),
NULL);
g_object_set_data (G_OBJECT (shape_window),
"cursor-offset", g_new0 (CursorOffset, 1));
g_signal_connect (drawing_area, "draw",
G_CALLBACK (repaint_da),
NULL);
g_signal_connect (shape_window, "draw",
G_CALLBACK (repaint_sda),
NULL);
/* We request a minimum size *after* having connecting the
* size-allocate signal for correct initialization.
*/
gtk_widget_set_size_request (drawing_area, width, height);
gtk_widget_set_size_request (shape_window, width, height);
root_win = gdk_get_default_root_window ();
return window;
}
static void
init_frames (PikaPlay *play)
{
/* Frames are associated to an unused image. */
gint i;
PikaLayer *new_frame;
PikaLayer *previous_frame;
PikaLayer *new_layer;
gboolean animated;
gint duration = 0;
DisposeType disposal = settings.default_frame_disposal;
gchar *layer_name;
GList *iter;
total_frames = g_list_length (layers);
/* Cleanup before re-generation. */
if (frames)
{
pika_image_delete (frames_image);
g_free (frames);
g_free (frame_durations);
}
frames = g_try_malloc0_n (total_frames, sizeof (PikaLayer *));
frame_durations = g_try_malloc0_n (total_frames, sizeof (guint32));
if (! frames || ! frame_durations)
{
pika_message (_("Memory could not be allocated to the frame container."));
gtk_widget_destroy (GTK_WIDGET (window));
pika_quit ();
return;
}
/* We only use RGB images for display because indexed images would
* somehow render terrible colors. Layers from other types will be
* automatically converted.
*/
frames_image = pika_image_new (width, height, PIKA_RGB);
/* Save processing time and memory by not saving history and merged frames. */
pika_image_undo_disable (frames_image);
for (iter = layers, i = 0;
iter;
iter = g_list_next (iter), i++)
{
layer_name = pika_item_get_name (iter->data);
if (layer_name)
{
duration = parse_ms_tag (layer_name);
disposal = parse_disposal_tag (layer_name);
g_free (layer_name);
}
if (i > 0 && disposal != DISPOSE_REPLACE)
{
previous_frame = pika_layer_copy (frames[i - 1]);
pika_image_insert_layer (frames_image, previous_frame, NULL, -1);
pika_item_set_visible (PIKA_ITEM (previous_frame), TRUE);
}
new_layer = pika_layer_new_from_drawable (iter->data, frames_image);
pika_image_insert_layer (frames_image, new_layer, NULL, -1);
pika_item_set_visible (PIKA_ITEM (new_layer), TRUE);
new_frame = pika_image_merge_visible_layers (frames_image,
PIKA_CLIP_TO_IMAGE);
frames[i] = new_frame;
pika_item_set_visible (PIKA_ITEM (new_frame), FALSE);
if (duration <= 0)
duration = settings.default_frame_duration;
frame_durations[i] = (guint32) duration;
}
/* Update the UI. */
animated = total_frames >= 2;
gtk_widget_set_sensitive (play->play_button, animated);
gtk_widget_set_sensitive (play->step_back_button, animated);
gtk_widget_set_sensitive (play->step_button, animated);
gtk_widget_set_sensitive (play->rewind_button, animated);
/* Keep the same frame number, unless it is now invalid. */
if (frame_number >= total_frames)
frame_number = 0;
}
static void
initialize (PikaPlay *play)
{
/* Freeing existing data after a refresh. */
g_list_free (layers);
/* Catch the case when the user has closed the image in the meantime. */
if (! pika_image_is_valid (image))
{
pika_message (_("Invalid image. Did you close it?"));
if (window)
gtk_widget_destroy (GTK_WIDGET (window));
return;
}
width = pika_image_get_width (image);
height = pika_image_get_height (image);
layers = pika_image_list_layers (image);
layers = g_list_reverse (layers);
if (!window)
build_dialog (play, pika_image_get_name (image));
refresh_dialog (pika_image_get_name (image));
init_frames (play);
render_frame (frame_number);
show_frame ();
}
static void
on_app_activate (GApplication *gapp,
gpointer user_data)
{
PikaPlay *play = PIKA_PLAY (user_data);
GtkApplication *app = GTK_APPLICATION (gapp);
initialize (play);
gtk_application_set_accels_for_action (app, "win.play", (const char*[]) { "space", NULL });
gtk_application_set_accels_for_action (app, "win.detach", (const char*[]) { NULL });
gtk_application_set_accels_for_action (app, "win.step-back", (const char*[]) { "d", NULL });
gtk_application_set_accels_for_action (app, "win.step", (const char*[]) { "f", NULL });
gtk_application_set_accels_for_action (app, "win.rewind", (const char*[]) { NULL });
gtk_application_set_accels_for_action (app, "win.refresh", (const char*[]) { "<control>R", NULL });
gtk_application_set_accels_for_action (app, "win.help", (const char*[]) { NULL });
gtk_application_set_accels_for_action (app, "win.close", (const char*[]) { "<control>W", NULL });
gtk_application_set_accels_for_action (app, "win.quit", (const char*[]) { "<control>Q", NULL });
gtk_application_set_accels_for_action (app, "win.speed-up", (const char*[]) { "<control>L", NULL });
gtk_application_set_accels_for_action (app, "win.speed-down", (const char*[]) { "<control>J", NULL });
gtk_application_set_accels_for_action (app, "win.speed-reset", (const char*[]) { "<control>K", NULL });
}
/* Rendering Functions */
static void
render_frame (gint32 whichframe)
{
GeglBuffer *buffer;
GtkWidget *da;
cairo_surface_t **drawing_surface;
guint drawing_width, drawing_height;
gdouble drawing_scale;
g_assert (whichframe < total_frames);
if (detached)
{
da = shape_window;
drawing_surface = &shape_drawing_area_surface;
drawing_width = shape_drawing_area_width;
drawing_height = shape_drawing_area_height;
drawing_scale = shape_scale;
}
else
{
da = drawing_area;
drawing_surface = &drawing_area_surface;
drawing_width = drawing_area_width;
drawing_height = drawing_area_height;
drawing_scale = scale;
}
buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (frames[whichframe]));
if (*drawing_surface)
cairo_surface_destroy (*drawing_surface);
*drawing_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
drawing_width,
drawing_height);
cairo_surface_flush (*drawing_surface);
/* Fetch and scale the whole raw new frame */
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, 0, drawing_width, drawing_height),
drawing_scale, babl_format ("cairo-ARGB32"),
cairo_image_surface_get_data (*drawing_surface),
cairo_image_surface_get_stride (*drawing_surface),
GEGL_ABYSS_CLAMP);
cairo_surface_mark_dirty (*drawing_surface);
/* Display the preview buffer. */
gtk_widget_queue_draw (da);
/* clean up */
g_object_unref (buffer);
}
static void
show_frame (void)
{
gchar *text;
/* update the dialog's progress bar */
gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress),
((gfloat) frame_number /
(gfloat) (total_frames - 0.999)));
text = g_strdup_printf (_("Frame %d of %d"), frame_number + 1, total_frames);
gtk_progress_bar_set_text (GTK_PROGRESS_BAR (progress), text);
g_free (text);
}
/* Util. */
static void
remove_timer (void)
{
if (timer)
{
g_source_remove (timer);
timer = 0;
}
}
static void
do_back_step (void)
{
if (frame_number == 0)
frame_number = total_frames - 1;
else
frame_number = (frame_number - 1) % total_frames;
render_frame (frame_number);
}
static void
do_step (void)
{
frame_number = (frame_number + 1) % total_frames;
render_frame (frame_number);
}
/* Callbacks */
static void
window_destroy (GtkWidget *widget,
PikaPlay *play)
{
if (playing)
remove_timer ();
if (shape_window)
gtk_widget_destroy (GTK_WIDGET (shape_window));
gtk_widget_destroy (GTK_WIDGET (window));
}
static gint
advance_frame_callback (gpointer data)
{
gdouble duration;
remove_timer();
duration = frame_durations[(frame_number + 1) % total_frames];
timer = g_timeout_add (duration * get_duration_factor (settings.duration_index),
advance_frame_callback, NULL);
do_step ();
show_frame ();
return FALSE;
}
static gdouble
get_duration_factor (gint index)
{
switch (index)
{
case 0:
return 0.125;
case 1:
return 0.25;
case 2:
return 0.5;
case 3:
return 1.0;
case 4:
return 2.0;
case 5:
return 4.0;
case 6:
return 8.0;
default:
return 1.0;
}
}
static gint
get_fps (gint index)
{
switch (index)
{
case 0:
return 10;
case 1:
return 12;
case 2:
return 15;
case 3:
return 24;
case 4:
return 25;
case 5:
return 30;
case 6:
return 50;
case 7:
return 60;
case 8:
return 72;
default:
return 10;
}
}
static gdouble
get_scale (gint index)
{
switch (index)
{
case 0:
return 0.51;
case 1:
return 1.0;
case 2:
return 1.25;
case 3:
return 1.5;
case 4:
return 2.0;
default:
{
/* likely -1 returned if there is no active item from the list.
* Try a text conversion, locale-aware in such a case, assuming people write in percent. */
gchar* active_text = gtk_combo_box_text_get_active_text (GTK_COMBO_BOX_TEXT (zoomcombo));
gdouble zoom = g_strtod (active_text, NULL);
/* Negative scales are inconsistent. And we want to avoid huge scaling. */
if (zoom > 400.0)
zoom = 400.0;
else if (zoom <= 50.0)
/* FIXME: scales under 0.5 are broken. See bug 690265. */
zoom = 50.1;
g_free (active_text);
return zoom / 100.0;
}
}
}
static void
step_back_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
if (playing)
g_action_group_activate_action (G_ACTION_GROUP (window),
"play", NULL);
do_back_step();
show_frame();
}
static void
play_change_state (GSimpleAction *action,
GVariant *new_state,
gpointer user_data)
{
GtkToolButton *play_button;
GtkWidget *tool_icon;
if (playing)
remove_timer ();
playing = g_variant_get_boolean (new_state);
g_simple_action_set_state (action, new_state);
play_button = GTK_TOOL_BUTTON (PIKA_PLAY (user_data)->play_button);
tool_icon = gtk_tool_button_get_icon_widget (play_button);
if (playing)
{
timer = g_timeout_add ((gdouble) frame_durations[frame_number] *
get_duration_factor (settings.duration_index),
advance_frame_callback, NULL);
gtk_image_set_from_icon_name (GTK_IMAGE (tool_icon),
"media-playback-pause",
GTK_ICON_SIZE_BUTTON);
}
else
{
gtk_image_set_from_icon_name (GTK_IMAGE (tool_icon),
"media-playback-start",
GTK_ICON_SIZE_BUTTON);
}
gtk_tool_item_set_tooltip_text (GTK_TOOL_ITEM (play_button),
playing ? _("Stop playback") : _("Start playback"));
}
static void
detach_change_state (GSimpleAction *action,
GVariant *new_state,
gpointer user_data)
{
gboolean active = g_variant_get_boolean (new_state);
if (active == detached)
{
g_warning ("detached state and toggle action got out of sync");
return;
}
g_simple_action_set_state (action, new_state);
detached = active;
if (detached)
{
gint x, y;
/* Create a total-alpha buffer merely for the not-shaped
drawing area to now display. */
gtk_window_set_screen (GTK_WINDOW (shape_window),
gtk_widget_get_screen (drawing_area));
gtk_widget_show (shape_window);
if (! gtk_widget_get_realized (drawing_area))
gtk_widget_realize (drawing_area);
if (! gtk_widget_get_realized (shape_window))
gtk_widget_realize (shape_window);
gdk_window_get_origin (gtk_widget_get_window (drawing_area), &x, &y);
gtk_window_move (GTK_WINDOW (shape_window), x + 6, y + 6);
gtk_widget_queue_draw (drawing_area);
}
else
gtk_widget_hide (shape_window);
render_frame (frame_number);
}
static void
step_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
if (playing)
g_action_group_activate_action (G_ACTION_GROUP (window),
"play", NULL);
do_step();
show_frame();
}
static void
rewind_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
if (playing)
g_action_group_activate_action (G_ACTION_GROUP (window),
"play", NULL);
frame_number = 0;
render_frame (frame_number);
show_frame ();
}
static void
refresh_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
initialize (PIKA_PLAY (user_data));
}
static void
close_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
gtk_widget_destroy (GTK_WIDGET (window));
}
static void
help_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
pika_standard_help_func (PLUG_IN_PROC, window);
}
static void
speed_up_action (GSimpleAction *saction,
GVariant *parameter,
gpointer user_data)
{
GAction *action;
if (settings.duration_index > 0)
--settings.duration_index;
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-up");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
settings.duration_index > 0);
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-reset");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
settings.duration_index != 3);
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-down");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action), TRUE);
update_combobox ();
}
static void
speed_down_action (GSimpleAction *saction,
GVariant *parameter,
gpointer user_data)
{
GAction *action;
if (settings.duration_index < 6)
++settings.duration_index;
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-down");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
settings.duration_index < 6);
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-reset");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
settings.duration_index != 3);
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-up");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action), TRUE);
update_combobox ();
}
static void
speed_reset_action (GSimpleAction *saction,
GVariant *parameter,
gpointer user_data)
{
GAction *action;
settings.duration_index = 3;
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-reset");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action), FALSE);
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-down");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action), TRUE);
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-up");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action), TRUE);
update_combobox ();
}
static void
framecombo_changed (GtkWidget *combo,
gpointer data)
{
settings.default_frame_disposal =
gtk_combo_box_get_active (GTK_COMBO_BOX (combo));
init_frames (PIKA_PLAY (data));
render_frame (frame_number);
}
static void
speedcombo_changed (GtkWidget *combo,
gpointer data)
{
GAction *action;
settings.duration_index = gtk_combo_box_get_active (GTK_COMBO_BOX (combo));
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-reset");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
settings.duration_index != 3);
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-down");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
settings.duration_index < 6);
action = g_action_map_lookup_action (G_ACTION_MAP (window), "speed-up");
g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
settings.duration_index > 0);
}
static void
update_scale (gdouble scale)
{
guint expected_drawing_area_width;
guint expected_drawing_area_height;
/* FIXME: scales under 0.5 are broken. See bug 690265. */
if (scale <= 0.5)
scale = 0.501;
expected_drawing_area_width = width * scale;
expected_drawing_area_height = height * scale;
gtk_widget_set_size_request (drawing_area,
expected_drawing_area_width,
expected_drawing_area_height);
gtk_widget_set_size_request (shape_window,
expected_drawing_area_width,
expected_drawing_area_height);
/* I force the shape window to a smaller size if we scale down. */
if (detached)
{
gint x, y;
gdk_window_get_origin (gtk_widget_get_window (shape_window), &x, &y);
gtk_window_move (GTK_WINDOW (shape_window), x, y);
gtk_widget_show (shape_window);
}
}
/*
* Callback emitted when the user hits the Enter key of the zoom combo.
*/
static void
zoomcombo_activated (GtkEntry *combo,
gpointer data)
{
update_scale (get_scale (-1));
}
/*
* Callback emitted when the user selects a zoom in the dropdown,
* or edits the text entry.
* We don't want to process manual edits because it greedily emits
* signals after each character deleted or added.
*/
static void
zoomcombo_changed (GtkWidget *combo,
gpointer data)
{
gint index = gtk_combo_box_get_active (GTK_COMBO_BOX (combo));
/* If no index, user is probably editing by hand. We wait for them to click "Enter". */
if (index != -1)
update_scale (get_scale (index));
}
static void
fpscombo_changed (GtkWidget *combo,
gpointer data)
{
settings.default_frame_duration =
1000 / get_fps (gtk_combo_box_get_active (GTK_COMBO_BOX (combo)));
}
static void
update_combobox (void)
{
gtk_combo_box_set_active (GTK_COMBO_BOX (speedcombo), settings.duration_index);
}
/* tag util. */
static gboolean
is_ms_tag (const gchar *str,
gint *duration,
gint *taglength)
{
gint sum = 0;
gint offset;
gint length;
length = strlen(str);
if (str[0] != '(')
return FALSE;
offset = 1;
/* eat any spaces between open-parenthesis and number */
while ((offset < length) && (str[offset] == ' '))
offset++;
if ((offset>=length) || (!g_ascii_isdigit (str[offset])))
return FALSE;
do
{
sum *= 10;
sum += str[offset] - '0';
offset++;
}
while ((offset<length) && (g_ascii_isdigit (str[offset])));
if (length - offset <= 2)
return FALSE;
/* eat any spaces between number and 'ms' */
while ((offset < length) && (str[offset] == ' '))
offset++;
if (length - offset <= 2 ||
g_ascii_toupper (str[offset]) != 'M' ||
g_ascii_toupper (str[offset + 1]) != 'S')
return FALSE;
offset += 2;
/* eat any spaces between 'ms' and close-parenthesis */
while ((offset < length) && (str[offset] == ' '))
offset++;
if ((length - offset < 1) || (str[offset] != ')'))
return FALSE;
offset++;
*duration = sum;
*taglength = offset;
return TRUE;
}
static gint
parse_ms_tag (const gchar *str)
{
gint i;
gint length = strlen (str);
for (i = 0; i < length; i++)
{
gint rtn;
gint dummy;
if (is_ms_tag (&str[i], &rtn, &dummy))
return rtn;
}
return -1;
}
static gboolean
is_disposal_tag (const gchar *str,
DisposeType *disposal,
gint *taglength)
{
if (strlen (str) != 9)
return FALSE;
if (strncmp (str, "(combine)", 9) == 0)
{
*taglength = 9;
*disposal = DISPOSE_COMBINE;
return TRUE;
}
else if (strncmp (str, "(replace)", 9) == 0)
{
*taglength = 9;
*disposal = DISPOSE_REPLACE;
return TRUE;
}
return FALSE;
}
static DisposeType
parse_disposal_tag (const gchar *str)
{
gint i;
gint length = strlen (str);
for (i = 0; i < length; i++)
{
DisposeType rtn;
gint dummy;
if (is_disposal_tag (&str[i], &rtn, &dummy))
return rtn;
}
return settings.default_frame_disposal;
}
static GtkWidget *
add_tool_button (GtkWidget *toolbar,
const char *action,
const char *icon,
const char *label,
const char *tooltip)
{
GtkWidget *tool_icon;
GtkToolItem *tool_button;
tool_icon = gtk_image_new_from_icon_name (icon, GTK_ICON_SIZE_BUTTON);
gtk_widget_show (GTK_WIDGET (tool_icon));
tool_button = gtk_tool_button_new (tool_icon, label);
gtk_widget_show (GTK_WIDGET (tool_button));
gtk_tool_item_set_tooltip_text (tool_button, tooltip);
gtk_actionable_set_detailed_action_name (GTK_ACTIONABLE (tool_button), action);
gtk_toolbar_insert (GTK_TOOLBAR (toolbar), tool_button, -1);
return GTK_WIDGET (tool_button);
}
static void
add_tool_separator (GtkWidget *toolbar,
gboolean expand)
{
GtkToolItem *item;
item = gtk_separator_tool_item_new ();
gtk_toolbar_insert (GTK_TOOLBAR (toolbar), item, -1);
gtk_separator_tool_item_set_draw (GTK_SEPARATOR_TOOL_ITEM (item), FALSE);
gtk_tool_item_set_expand (item, expand);
gtk_widget_show (GTK_WIDGET (item));
}