static void size_allocate_callback(GtkWidget *widget, GtkAllocation *allocation, gpointer user_data)
{
dt_iop_module_t *self = (dt_iop_module_t *)user_data;
dt_iop_zonesystem_gui_data_t *g = (dt_iop_zonesystem_gui_data_t *)self->gui_data;
if(g->image) cairo_surface_destroy(g->image);
free(g->image_buffer);
/* load the dt logo as a brackground */
char filename[PATH_MAX] = { 0 };
char datadir[PATH_MAX] = { 0 };
char *logo;
dt_logo_season_t season = get_logo_season();
if(season != DT_LOGO_SEASON_NONE)
logo = g_strdup_printf("%%s/pixmaps/idbutton-%d.svg", (int)season);
else
logo = g_strdup("%s/pixmaps/idbutton.svg");
dt_loc_get_datadir(datadir, sizeof(datadir));
snprintf(filename, sizeof(filename), logo, datadir);
g_free(logo);
RsvgHandle *svg = rsvg_handle_new_from_file(filename, NULL);
if(svg)
{
cairo_surface_t *surface;
cairo_t *cr;
RsvgDimensionData dimension;
rsvg_handle_get_dimensions(svg, &dimension);
float svg_size = MAX(dimension.width, dimension.height);
float final_size = MIN(allocation->width, allocation->height) * 0.75;
float factor = final_size / svg_size;
float final_width = dimension.width * factor * darktable.gui->ppd,
final_height = dimension.height * factor * darktable.gui->ppd;
int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, final_width);
g->image_buffer = (guint8 *)calloc(stride * final_height, sizeof(guint8));
surface = dt_cairo_image_surface_create_for_data(g->image_buffer, CAIRO_FORMAT_ARGB32, final_width,
final_height, stride);
if(cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS)
{
free(g->image_buffer);
g->image_buffer = NULL;
}
else
{
cr = cairo_create(surface);
cairo_scale(cr, factor, factor);
rsvg_handle_render_cairo(svg, cr);
cairo_destroy(cr);
cairo_surface_flush(surface);
g->image = surface;
g->image_width = final_width / darktable.gui->ppd;
g->image_height = final_height / darktable.gui->ppd;
}
g_object_unref(svg);
}
}
void gui_init(dt_lib_module_t *self)
{
char filename[PATH_MAX] = { 0 };
char datadir[PATH_MAX] = { 0 };
/* initialize ui widgets */
dt_lib_darktable_t *d = (dt_lib_darktable_t *)g_malloc0(sizeof(dt_lib_darktable_t));
self->data = (void *)d;
/* create drawing area */
self->widget = gtk_event_box_new();
/* connect callbacks */
g_signal_connect(G_OBJECT(self->widget), "draw", G_CALLBACK(_lib_darktable_draw_callback), self);
g_signal_connect(G_OBJECT(self->widget), "button-press-event",
G_CALLBACK(_lib_darktable_button_press_callback), self);
/* create a cairo surface of dt icon */
char *logo;
dt_logo_season_t season = get_logo_season();
if(season != DT_LOGO_SEASON_NONE)
logo = g_strdup_printf("%%s/pixmaps/idbutton-%d.%%s", (int)season);
else
logo = g_strdup("%s/pixmaps/idbutton.%s");
dt_loc_get_datadir(datadir, sizeof(datadir));
snprintf(filename, sizeof(filename), logo, datadir, "svg");
// first we try the SVG
{
GError *error = NULL;
RsvgHandle *svg = rsvg_handle_new_from_file(filename, &error);
if(!svg || error)
{
fprintf(stderr,
"warning: can't load darktable logo from SVG file `%s', falling back to PNG version\n%s\n",
filename, error->message);
g_error_free(error);
error = NULL;
goto png_fallback;
}
cairo_surface_t *surface;
cairo_t *cr;
RsvgDimensionData dimension;
rsvg_handle_get_dimensions(svg, &dimension);
int width = DT_PIXEL_APPLY_DPI(dimension.width) * darktable.gui->ppd,
height = DT_PIXEL_APPLY_DPI(dimension.height) * darktable.gui->ppd;
int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
d->image_buffer = (guint8 *)calloc(stride * height, sizeof(guint8));
surface
= dt_cairo_image_surface_create_for_data(d->image_buffer, CAIRO_FORMAT_ARGB32, width, height, stride);
if(cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS)
{
free(d->image_buffer);
d->image_buffer = NULL;
g_object_unref(svg);
fprintf(stderr, "warning: can't load darktable logo from SVG file `%s', falling back to PNG version\n",
filename);
goto png_fallback;
}
cr = cairo_create(surface);
cairo_scale(cr, darktable.gui->dpi_factor, darktable.gui->dpi_factor);
rsvg_handle_render_cairo(svg, cr);
cairo_surface_flush(surface);
d->image = surface;
g_object_unref(svg);
}
goto done;
png_fallback:
// let's fall back to the PNG
{
cairo_surface_t *surface;
cairo_t *cr;
snprintf(filename, sizeof(filename), logo, datadir, "png");
surface = cairo_image_surface_create_from_png(filename);
if(cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS)
{
fprintf(stderr, "warning: can't load darktable logo from PNG file `%s'\n", filename);
d->image = NULL;
goto done;
}
int png_width = cairo_image_surface_get_width(surface),
png_height = cairo_image_surface_get_height(surface);
// blow up the PNG. Ugly, but at least it has the correct size afterwards :-/
int width = DT_PIXEL_APPLY_DPI(png_width) * darktable.gui->ppd,
height = DT_PIXEL_APPLY_DPI(png_height) * darktable.gui->ppd;
int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
d->image_buffer = (guint8 *)calloc(stride * height, sizeof(guint8));
d->image
= dt_cairo_image_surface_create_for_data(d->image_buffer, CAIRO_FORMAT_ARGB32, width, height, stride);
if(cairo_surface_status(d->image) != CAIRO_STATUS_SUCCESS)
{
free(d->image_buffer);
d->image_buffer = NULL;
cairo_surface_destroy(surface);
fprintf(stderr, "warning: can't load darktable logo from PNG file `%s'\n", filename);
d->image = NULL;
goto done;
}
cr = cairo_create(d->image);
cairo_rectangle(cr, 0, 0, width, height);
cairo_scale(cr, darktable.gui->dpi_factor, darktable.gui->dpi_factor);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_fill(cr);
cairo_surface_flush(d->image);
cairo_surface_destroy(surface);
}
done:
g_free(logo);
d->image_width = d->image ? dt_cairo_image_surface_get_width(d->image) : 0;
d->image_height = d->image ? dt_cairo_image_surface_get_height(d->image) : 0;
/* set size of drawing area */
gtk_widget_set_size_request(self->widget, d->image_width + (int)DT_PIXEL_APPLY_DPI(180),
d->image_height + (int)DT_PIXEL_APPLY_DPI(8));
}
// maybe this should be (partly) in common/imageio.[c|h]?
static void _lib_import_update_preview(GtkFileChooser *file_chooser, gpointer data)
{
GtkWidget *preview;
char *filename;
GdkPixbuf *pixbuf = NULL;
gboolean have_preview = FALSE, no_preview_fallback = FALSE;
preview = GTK_WIDGET(data);
filename = gtk_file_chooser_get_preview_filename(file_chooser);
if(!g_file_test(filename, G_FILE_TEST_IS_REGULAR))
{
no_preview_fallback = TRUE;
}
else
{
// don't create dng thumbnails to avoid crashes in libtiff when these are hdr:
char *c = filename + strlen(filename);
while(c > filename && *c != '.') c--;
if(!strcasecmp(c, ".dng")) no_preview_fallback = TRUE;
}
// unfortunately we can not use following, because frequently it uses wrong orientation
// pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
have_preview = (pixbuf != NULL);
if(!have_preview && !no_preview_fallback)
{
uint8_t *buffer = NULL;
size_t size;
char *mime_type = NULL;
if(!dt_exif_get_thumbnail(filename, &buffer, &size, &mime_type))
{
// Scale the image to the correct size
GdkPixbuf *tmp;
GdkPixbufLoader *loader = gdk_pixbuf_loader_new();
if (!gdk_pixbuf_loader_write(loader, buffer, size, NULL)) goto cleanup;
if (!(tmp = gdk_pixbuf_loader_get_pixbuf(loader))) goto cleanup;
float ratio = 1.0 * gdk_pixbuf_get_height(tmp) / gdk_pixbuf_get_width(tmp);
int width = 128, height = 128 * ratio;
pixbuf = gdk_pixbuf_scale_simple(tmp, width, height, GDK_INTERP_BILINEAR);
have_preview = TRUE;
cleanup:
gdk_pixbuf_loader_close(loader, NULL);
free(mime_type);
free(buffer);
g_object_unref(loader); // This should clean up tmp as well
}
}
if(have_preview && !no_preview_fallback)
{
// get image orientation
dt_image_t img = { 0 };
(void)dt_exif_read(&img, filename);
// Rotate the image to the correct orientation
GdkPixbuf *tmp = pixbuf;
if(img.orientation == ORIENTATION_ROTATE_CCW_90_DEG)
{
tmp = gdk_pixbuf_rotate_simple(pixbuf, GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE);
}
else if(img.orientation == ORIENTATION_ROTATE_CW_90_DEG)
{
tmp = gdk_pixbuf_rotate_simple(pixbuf, GDK_PIXBUF_ROTATE_CLOCKWISE);
}
else if(img.orientation == ORIENTATION_ROTATE_180_DEG)
{
tmp = gdk_pixbuf_rotate_simple(pixbuf, GDK_PIXBUF_ROTATE_UPSIDEDOWN);
}
if(pixbuf != tmp)
{
g_object_unref(pixbuf);
pixbuf = tmp;
}
}
if(no_preview_fallback || !have_preview)
{
guint8 *image_buffer = NULL;
/* load the dt logo as a brackground */
char filename[PATH_MAX] = { 0 };
char datadir[PATH_MAX] = { 0 };
char *logo;
dt_logo_season_t season = get_logo_season();
if(season != DT_LOGO_SEASON_NONE)
logo = g_strdup_printf("%%s/pixmaps/idbutton-%d.svg", (int)season);
else
logo = g_strdup("%s/pixmaps/idbutton.svg");
dt_loc_get_datadir(datadir, sizeof(datadir));
snprintf(filename, sizeof(filename), logo, datadir);
g_free(logo);
RsvgHandle *svg = rsvg_handle_new_from_file(filename, NULL);
if(svg)
{
cairo_surface_t *surface;
cairo_t *cr;
RsvgDimensionData dimension;
rsvg_handle_get_dimensions(svg, &dimension);
float svg_size = MAX(dimension.width, dimension.height);
float final_size = 128;
float factor = final_size / svg_size;
float final_width = dimension.width * factor * darktable.gui->ppd,
final_height = dimension.height * factor * darktable.gui->ppd;
int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, final_width);
image_buffer = (guint8 *)calloc(stride * final_height, sizeof(guint8));
surface = dt_cairo_image_surface_create_for_data(image_buffer, CAIRO_FORMAT_ARGB32, final_width,
final_height, stride);
if(cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS)
{
free(image_buffer);
image_buffer = NULL;
}
else
{
cr = cairo_create(surface);
cairo_scale(cr, factor, factor);
rsvg_handle_render_cairo(svg, cr);
cairo_surface_flush(surface);
pixbuf = gdk_pixbuf_get_from_surface(surface, 0, 0, final_width / darktable.gui->ppd,
final_height / darktable.gui->ppd);
}
g_object_unref(svg);
}
have_preview = TRUE;
}
if(have_preview) gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
if(pixbuf) g_object_unref(pixbuf);
g_free(filename);
gtk_file_chooser_set_preview_widget_active(file_chooser, have_preview);
}
