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plug-ins: #5896. add option for reversing order of layers when importing PDF 

This feature adds new 'Load in reverse order' toggle box to allow
selection of order of PDF pages before importing them as a layers or
images.

Adds new bool parameter 'reverse-order' to Non-interactive mode.
Order of parameters was also changed from (password, n-pages, pages)
to (password, reverse-order, n-pages, pages)
This commit is contained in:
Stanislav Grinkov 2021-01-08 22:44:36 +06:00 committed by Jehan
parent d3194c1f2f
commit 926eb43716
1 changed files with 46 additions and 7 deletions
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53
plug-ins/common/file-pdf-load.c
View File

@ -197,15 +197,17 @@ typedef struct
GimpPageSelectorTarget target;
gdouble resolution;
gboolean antialias;
gboolean reverse_order;
gchar *PDF_password;
} PdfLoadVals;
static PdfLoadVals loadvals =
{
GIMP_PAGE_SELECTOR_TARGET_LAYERS,
100.00, /* 100 dpi */
TRUE,
NULL
100.00, /* resolution in dpi */
TRUE, /* antialias */
FALSE, /* reverse_order */
NULL /* pdf_password */
};
typedef struct
@ -255,6 +257,7 @@ static GimpImage * load_image (PopplerDocument *doc,
GimpPageSelectorTarget target,
gdouble resolution,
gboolean antialias,
gboolean reverse_order,
PdfSelectedPages *pages);
static GimpPDBStatusType load_dialog (PopplerDocument *doc,
@ -354,6 +357,12 @@ pdf_create_procedure (GimpPlugIn *plug_in,
NULL,
G_PARAM_READWRITE);
GIMP_PROC_ARG_BOOLEAN (procedure, "reverse-order",
"Load in reverse order",
"Load PDF pages in reverse order",
FALSE,
G_PARAM_READWRITE);
GIMP_PROC_ARG_INT (procedure, "n-pages",
"N pages",
"Number of pages to load (0 for all)",
@ -435,6 +444,8 @@ pdf_load (GimpProcedure *procedure,
GIMP_VALUES_GET_STRING (args, 0),
run_mode, &error);
loadvals.reverse_order = GIMP_VALUES_GET_BOOLEAN (args, 1);
if (doc)
{
PopplerPage *test_page = poppler_document_get_page (doc, 0);
@ -452,7 +463,7 @@ pdf_load (GimpProcedure *procedure,
* "pages" argument.
* Not ceiling this value is *not* an error.
*/
pages.n_pages = GIMP_VALUES_GET_INT (args, 1);
pages.n_pages = GIMP_VALUES_GET_INT (args, 2);
if (pages.n_pages <= 0)
{
pages.n_pages = doc_n_pages;
@ -462,7 +473,7 @@ pdf_load (GimpProcedure *procedure,
}
else
{
const gint32 *p = GIMP_VALUES_GET_INT32_ARRAY (args, 2);
const gint32 *p = GIMP_VALUES_GET_INT32_ARRAY (args, 3);
pages.pages = g_new (gint, pages.n_pages);
@ -511,6 +522,7 @@ pdf_load (GimpProcedure *procedure,
loadvals.target,
loadvals.resolution,
loadvals.antialias,
loadvals.reverse_order,
&pages);
}
@ -785,6 +797,7 @@ load_image (PopplerDocument *doc,
GimpPageSelectorTarget target,
gdouble resolution,
gboolean antialias,
gboolean reverse_order,
PdfSelectedPages *pages)
{
GimpImage *image = NULL;
@ -792,6 +805,14 @@ load_image (PopplerDocument *doc,
gint i;
gdouble scale;
gdouble doc_progress = 0;
gint base_index = 0;
gint sign = 1;
if (reverse_order && pages->n_pages > 0)
{
base_index = pages->n_pages - 1;
sign = -1;
}
if (target == GIMP_PAGE_SELECTOR_TARGET_IMAGES)
images = g_new0 (GimpImage *, pages->n_pages);
@ -813,8 +834,11 @@ load_image (PopplerDocument *doc,
cairo_surface_t *surface;
gint width;
gint height;
gint page_index;
page = poppler_document_get_page (doc, pages->pages[i]);
page_index = base_index + sign * i;
page = poppler_document_get_page (doc, pages->pages[page_index]);
poppler_page_get_size (page, &page_width, &page_height);
width = page_width * scale;
@ -1020,6 +1044,8 @@ load_dialog (PopplerDocument *doc,
GtkWidget *resolution;
GtkWidget *antialias;
GtkWidget *hbox;
GtkWidget *reverse_order;
GtkWidget *separator;
ThreadData thread_data;
GThread *thread;
@ -1109,8 +1135,21 @@ load_dialog (PopplerDocument *doc,
thread = g_thread_new ("thumbnailer", thumbnail_thread, &thread_data);
/* Resolution */
/* "Load in reverse order" toggle button */
reverse_order = gtk_check_button_new_with_mnemonic (_("Load in reverse order"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (reverse_order), loadvals.reverse_order);
gtk_box_pack_start (GTK_BOX (vbox), reverse_order, FALSE, FALSE, 0);
g_signal_connect (reverse_order, "toggled",
G_CALLBACK (gimp_toggle_button_update), &loadvals.reverse_order);
gtk_widget_show (reverse_order);
/* Separator */
separator = gtk_separator_new (GTK_ORIENTATION_HORIZONTAL);
gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0);
gtk_widget_show (separator);
/* Resolution */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);