lorid

commit d14cc816b394eaed6be63bcf1f0a24cc5b93c232
parent 533f89e679394a8d5287ce043ff74c9cfe0cfec7
Author: nibo <nibo@relim.de>
Date:   Fri,  2 Aug 2024 17:00:51 +0200

Render annotations when line item has a href

Diffstat:
M
out_pdf.c
 | 
86
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----

1 file changed, 81 insertions(+), 5 deletions(-)
diff --git a/out_pdf.c b/out_pdf.c
@@ -426,7 +426,7 @@ static bool out_pdf_text_show(pdfio_stream_t *stream, struct TextLineItem *item,
 	red = item->style->foreground_color->red / 255.0;
 	green = item->style->foreground_color->green / 255.0;
 	blue = item->style->foreground_color->blue / 255.0;
-	// printf("foreground_color: %s\n", the_rgb_color(style->foreground_color));
+	// printf("foreground_color: %s\n", the_rgb_color(item->style->foreground_color));
 	if (!pdfioContentSetFillColorRGB(stream, red, green, blue)) {
 		fprintf(stderr, "pdfioContentSetFillColorRGB failed.\n");
 		return false;
@@ -806,7 +806,71 @@ static void text_free(struct Text **text)
 	free(text);
 }
 
-bool out_pdf_set_title(pdfio_file_t *pdf, struct ChoSong **songs)
+static pdfio_dict_t *annot_create(pdfio_file_t *pdf, const char *uri, pdfio_rect_t *rect)
+{
+	pdfio_dict_t *annot = pdfioDictCreate(pdf);
+	if (!pdfioDictSetName(annot, "Subtype", "Link")) {
+		fprintf(stderr, "pdfioDictSetName failed.\n");
+		return NULL;
+	}
+	if (!pdfioDictSetRect(annot, "Rect", rect)) {
+		fprintf(stderr, "pdfioDictSetRect failed.\n");
+		return NULL;
+	}
+	pdfio_dict_t *action = pdfioDictCreate(pdf);
+	if (!pdfioDictSetName(action, "S", "URI")) {
+		fprintf(stderr, "pdfioDictSetName failed.\n");
+		return NULL;
+	}
+	if (!pdfioDictSetString(action, "URI", uri)) {
+		fprintf(stderr, "pdfioDictSetString failed.\n");
+		return NULL;
+	}
+	if (!pdfioDictSetDict(annot, "A", action)) {
+		fprintf(stderr, "pdfioDictSetDict failed.\n");
+		return NULL;
+	}
+	return annot;
+}
+
+static bool annots_create(pdfio_file_t *pdf, pdfio_array_t *annots, struct Text **text)
+{
+	struct TextLineItem *item;
+	pdfio_dict_t *annot;
+	pdfio_rect_t rect;
+	double y = MEDIABOX_HEIGHT - 25.0;
+	double width;
+	int t, tl, tli;
+	for (t = 0; text[t]; t++) {
+		for (tl = 0; text[t]->lines[tl]; tl++) {
+			if (text[t]->lines[tl]->items) {
+				for (tli = 0; text[t]->lines[tl]->items[tli]; tli++) {
+					item = text[t]->lines[tl]->items[tli];
+					if (item->style->href) {
+						width = text_width(item);
+						rect.x1 = item->x;
+						rect.x2 = item->x + width;
+						rect.y1 = y - 2.0;
+						rect.y2 = y + item->style->font->size * 0.8;
+						annot = annot_create(pdf, item->style->href, &rect);
+						if (!annot) {
+							fprintf(stderr, "annot_create failed.\n");
+							return false;
+						}
+						if (!pdfioArrayAppendDict(annots, annot)) {
+							fprintf(stderr, "pdfioArrayAppendDict failed.\n");
+							return false;
+						}
+					}
+				}
+			}
+			y -= text[t]->lines[tl]->height;
+		}
+	}
+	return true;
+}
+
+static bool out_pdf_set_title(pdfio_file_t *pdf, struct ChoSong **songs)
 {
 	// Set pdf title only if single song exist
 	if (songs[0] && !songs[1]) {
@@ -881,19 +945,31 @@ bool out_pdf_new(const char *cho_filepath, const char *output_folder_or_file, st
 		fprintf(stderr, "text_create failed.\n");
 		return false;
 	}
+	pdfio_array_t *annots = pdfioArrayCreate(pdf);
+	if (!annots_create(pdf, annots, text)) {
+		fprintf(stderr, "annotations_create failed.\n");
+		return false;
+	}
+	printf("annots size: %ld\n", pdfioArrayGetSize(annots));
+	if (pdfioArrayGetSize(annots) > 0) {
+		if (!pdfioDictSetArray(page1_dict, "Annots", annots)) {
+			fprintf(stderr, "pdfioDictSetArray failed.\n");
+			return false;
+		}
+	}
 	pdfio_array_t *color_array = pdfioArrayCreateColorFromStandard(pdf, 3, PDFIO_CS_ADOBE);
 	if (!pdfioPageDictAddColorSpace(page1_dict, "rgbcolorspace", color_array)) {
 		fprintf(stderr, "pdfioPageDictAddColorSpace failed.\n");
-		return 1;
+		return false;
 	}
 	pdfio_stream_t *page1_stream = pdfioFileCreatePage(pdf, page1_dict);
 	if (!pdfioContentSetFillColorSpace(page1_stream, "rgbcolorspace")) {
 		fprintf(stderr, "pdfioContentSetFillColorSpace failed.\n");
-		return 1;
+		return false;
 	}
 	if (!pdfioContentSetStrokeColorSpace(page1_stream, "rgbcolorspace")) {
 		fprintf(stderr, "pdfioContentSetStrokeColorSpace failed.\n");
-		return 1;
+		return false;
 	}
 	double y = MEDIABOX_HEIGHT - 25.0;
 	int t, tl, tli;