mirror of
https://git.pwmt.org/pwmt/zathura.git
synced 2024-11-14 08:33:46 +01:00
398 lines
11 KiB
C
398 lines
11 KiB
C
/* SPDX-License-Identifier: Zlib */
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#include <glib.h>
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#include <girara/utils.h>
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#include <girara/settings.h>
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#ifdef WITH_SYNCTEX
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#include <synctex/synctex_parser.h>
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#endif
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#include "synctex.h"
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#include "zathura.h"
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#include "page.h"
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#include "document.h"
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#include "utils.h"
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#include "adjustment.h"
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#ifdef WITH_SYNCTEX
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bool
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synctex_get_input_line_column(const char* filename, unsigned int page, int x, int y,
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char** input_file, unsigned int* line, unsigned int* column)
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{
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if (filename == NULL) {
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return false;
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}
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synctex_scanner_p scanner = synctex_scanner_new_with_output_file(filename, NULL, 1);
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if (scanner == NULL) {
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girara_debug("Failed to create synctex scanner.");
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return false;
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}
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synctex_scanner_p temp = synctex_scanner_parse(scanner);
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if (temp == NULL) {
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girara_debug("Failed to parse synctex file.");
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synctex_scanner_free(scanner);
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return false;
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}
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bool ret = false;
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if (synctex_edit_query(scanner, page + 1u, x, y) > 0) {
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/* Assume that a backward search returns at most one result. */
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synctex_node_p node = synctex_scanner_next_result(scanner);
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if (node != NULL) {
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if (input_file != NULL) {
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*input_file = g_strdup(synctex_scanner_get_name(scanner, synctex_node_tag(node)));
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}
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if (line != NULL) {
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*line = synctex_node_line(node);
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}
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if (column != NULL) {
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*column = synctex_node_column(node);
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}
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ret = true;
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}
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}
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synctex_scanner_free(scanner);
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return ret;
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}
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void
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synctex_edit(const char* editor, zathura_page_t* page, int x, int y)
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{
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if (editor == NULL || page == NULL) {
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return;
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}
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zathura_document_t* document = zathura_page_get_document(page);
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if (document == NULL) {
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return;
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}
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const char* filename = zathura_document_get_path(document);
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if (filename == NULL) {
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return;
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}
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unsigned int line = 0;
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unsigned int column = 0;
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char* input_file = NULL;
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if (synctex_get_input_line_column(filename, zathura_page_get_index(page), x, y,
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&input_file, &line, &column) == true && input_file != NULL) {
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char* linestr = g_strdup_printf("%d", line);
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char* columnstr = g_strdup_printf("%d", column);
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gchar** argv = NULL;
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gint argc = 0;
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if (g_shell_parse_argv(editor, &argc, &argv, NULL) == TRUE) {
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for (gint i = 0; i != argc; ++i) {
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char* arg = argv[i];
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char* temp = girara_replace_substring(arg, "%{line}", linestr);
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arg = temp;
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temp = girara_replace_substring(arg, "%{column}", columnstr);
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g_free(arg);
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arg = temp;
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temp = girara_replace_substring(arg, "%{input}", input_file);
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g_free(arg);
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arg = temp;
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if (arg != NULL) {
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g_free(argv[i]);
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argv[i] = arg;
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} else {
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girara_error("Failed to update '%s' with line (%s), column (%s) and input file (%s) data.", argv[i], linestr, columnstr, input_file);
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}
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}
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GError* error = NULL;
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if (g_spawn_async(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error) == FALSE) {
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girara_error("Failed to execute synctex command: %s", error->message);
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g_error_free(error);
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}
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g_strfreev(argv);
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}
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g_free(linestr);
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g_free(columnstr);
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g_free(input_file);
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} else {
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girara_warning("Failed to obtain data via SyncTeX or data is incomplete.");
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}
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}
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girara_list_t*
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synctex_rectangles_from_position(const char* filename, const char* input_file,
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int line, int column, unsigned int* page,
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girara_list_t** secondary_rects)
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{
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if (filename == NULL || input_file == NULL || page == NULL) {
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return NULL;
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}
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/* We use indexes starting at 0 but SyncTeX uses 1 */
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++line;
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++column;
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synctex_scanner_p scanner = synctex_scanner_new_with_output_file(filename, NULL, 1);
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if (scanner == NULL) {
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girara_debug("Failed to create synctex scanner.");
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return NULL;
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}
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synctex_scanner_p temp = synctex_scanner_parse(scanner);
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if (temp == NULL) {
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girara_debug("Failed to parse synctex file.");
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synctex_scanner_free(scanner);
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return NULL;
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}
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girara_list_t* hitlist = girara_list_new2(g_free);
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girara_list_t* other_rects = girara_list_new2(g_free);
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if (synctex_display_query(scanner, input_file, line, column, -1) > 0) {
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synctex_node_p node = NULL;
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bool got_page = false;
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while ((node = synctex_scanner_next_result(scanner)) != NULL) {
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const unsigned int current_page = synctex_node_page(node) - 1;
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if (got_page == false) {
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got_page = true;
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*page = current_page;
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}
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zathura_rectangle_t rect = { 0, 0, 0, 0 };
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rect.x1 = synctex_node_box_visible_h(node);
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rect.y1 = synctex_node_box_visible_v(node) - synctex_node_box_visible_height(node);
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rect.x2 = rect.x1 + synctex_node_box_visible_width(node);
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rect.y2 = synctex_node_box_visible_depth(node) + synctex_node_box_visible_height(node) + rect.y1;
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if (*page == current_page) {
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zathura_rectangle_t* real_rect = g_try_malloc(sizeof(zathura_rectangle_t));
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if (real_rect == NULL) {
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continue;
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}
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*real_rect = rect;
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girara_list_append(hitlist, real_rect);
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} else {
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synctex_page_rect_t* page_rect = g_try_malloc(sizeof(synctex_page_rect_t));
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if (page_rect == NULL) {
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continue;
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}
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page_rect->page = current_page;
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page_rect->rect = rect;
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girara_list_append(other_rects, page_rect);
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}
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}
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}
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synctex_scanner_free(scanner);
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if (secondary_rects != NULL) {
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*secondary_rects = other_rects;
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} else {
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girara_list_free(other_rects);
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}
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girara_list_t* hitlist_flat = flatten_rectangles(hitlist);
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girara_list_free(hitlist);
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return hitlist_flat;
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}
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#else
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bool
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synctex_get_input_line_column(const char* UNUSED(filename),
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unsigned int UNUSED(page), int UNUSED(x),
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int UNUSED(y), char** UNUSED(input_file),
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unsigned int* UNUSED(line),
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unsigned int* UNUSED(column))
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{
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return false;
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}
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void
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synctex_edit(const char* UNUSED(editor), zathura_page_t* UNUSED(page),
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int UNUSED(x), int UNUSED(y))
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{}
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girara_list_t*
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synctex_rectangles_from_position(const char* UNUSED(filename),
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const char* UNUSED(input_file),
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int UNUSED(line), int UNUSED(column),
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unsigned int* UNUSED(page),
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girara_list_t** UNUSED(secondary_rects))
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{
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return NULL;
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}
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#endif
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bool
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synctex_parse_input(const char* synctex, char** input_file, int* line,
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int* column)
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{
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if (synctex == NULL || input_file == NULL || line == NULL || column == NULL) {
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return false;
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}
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char** split_fwd = g_strsplit(synctex, ":", 0);
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if (split_fwd == NULL || split_fwd[0] == NULL || split_fwd[1] == NULL ||
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split_fwd[2] == NULL || split_fwd[3] != NULL) {
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g_strfreev(split_fwd);
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return false;
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}
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gint64 tmp = g_ascii_strtoll(split_fwd[0], NULL, 10);
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*line = MIN(INT_MAX, tmp);
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tmp = g_ascii_strtoll(split_fwd[1], NULL, 10);
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*column = MIN(INT_MAX, tmp);
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/* SyncTeX starts indexing at 1, but we use 0 */
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if (*line > 0) {
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--*line;
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}
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if (*column > 0) {
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--*column;
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}
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*input_file = g_strdup(split_fwd[2]);
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g_strfreev(split_fwd);
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return true;
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}
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void
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synctex_highlight_rects(zathura_t* zathura, unsigned int page,
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girara_list_t** rectangles)
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{
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const unsigned int number_of_pages = zathura_document_get_number_of_pages(zathura->document);
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for (unsigned int p = 0; p != number_of_pages; ++p) {
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GObject* widget = G_OBJECT(zathura->pages[p]);
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g_object_set(widget, "draw-links", FALSE, "search-results", rectangles[p],
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NULL);
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if (p == page) {
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g_object_set(widget, "search-current", 0, NULL);
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}
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}
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document_draw_search_results(zathura, true);
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girara_list_t* rect_list = rectangles[page];
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if (rect_list == NULL || girara_list_size(rect_list) == 0) {
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girara_debug("No rectangles for the given page. Jumping to page %u.", page);
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page_set(zathura, page);
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return;
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}
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bool search_hadjust = true;
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girara_setting_get(zathura->ui.session, "search-hadjust", &search_hadjust);
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/* compute the position of the center of the page */
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double pos_x = 0;
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double pos_y = 0;
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page_number_to_position(zathura->document, page, 0.5, 0.5, &pos_x, &pos_y);
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/* correction to center the current result */
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/* NOTE: rectangle is in viewport units, already scaled and rotated */
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unsigned int cell_height = 0;
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unsigned int cell_width = 0;
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zathura_document_get_cell_size(zathura->document, &cell_height, &cell_width);
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unsigned int doc_height = 0;
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unsigned int doc_width = 0;
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zathura_document_get_document_size(zathura->document, &doc_height, &doc_width);
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/* Need to adjust rectangle to page scale and orientation */
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zathura_page_t* doc_page = zathura_document_get_page(zathura->document, page);
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zathura_rectangle_t* rect = girara_list_nth(rect_list, 0);
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if (rect == NULL) {
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girara_debug("List of rectangles is broken. Jumping to page %u.", page);
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page_set(zathura, page);
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return;
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}
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zathura_rectangle_t rectangle = recalc_rectangle(doc_page, *rect);
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/* compute the center of the rectangle, which will be aligned to the center
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of the viewport */
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double center_x = (rectangle.x1 + rectangle.x2) / 2;
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double center_y = (rectangle.y1 + rectangle.y2) / 2;
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pos_y += (center_y - (double)cell_height/2) / (double)doc_height;
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if (search_hadjust == true) {
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pos_x += (center_x - (double)cell_width/2) / (double)doc_width;
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}
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/* move to position */
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girara_debug("Jumping to page %u position (%0.2f, %0.2f).", page, pos_x, pos_y);
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zathura_jumplist_add(zathura);
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position_set(zathura, pos_x, pos_y);
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zathura_jumplist_add(zathura);
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}
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static void
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dup_and_append_rect(void* data, void* userdata)
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{
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const synctex_page_rect_t* rect = data;
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girara_list_t** all_rectangles = userdata;
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zathura_rectangle_t* newrect = g_try_malloc0(sizeof(zathura_rectangle_t));
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if (newrect != NULL) {
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*newrect = rect->rect;
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girara_list_append(all_rectangles[rect->page], newrect);
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}
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}
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bool
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synctex_view(zathura_t* zathura, const char* input_file,
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unsigned int line, unsigned int column)
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{
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if (zathura == NULL || input_file == NULL) {
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return false;
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}
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const unsigned int number_of_pages = zathura_document_get_number_of_pages(zathura->document);
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unsigned int page = 0;
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girara_list_t* secondary_rects = NULL;
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girara_list_t* rectangles = synctex_rectangles_from_position(
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zathura_document_get_path(zathura->document), input_file, line,
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column, &page, &secondary_rects);
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if (rectangles == NULL) {
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return false;
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}
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girara_list_t** all_rectangles = g_try_malloc0(number_of_pages * sizeof(girara_list_t*));
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if (all_rectangles == NULL) {
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girara_list_free(rectangles);
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return false;
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}
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for (unsigned int p = 0; p != number_of_pages; ++p) {
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if (p == page) {
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all_rectangles[p] = rectangles;
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} else {
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all_rectangles[p] = girara_list_new2(g_free);
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}
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}
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if (secondary_rects != NULL) {
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girara_list_foreach(secondary_rects, dup_and_append_rect, all_rectangles);
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}
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synctex_highlight_rects(zathura, page, all_rectangles);
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girara_list_free(secondary_rects);
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g_free(all_rectangles);
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return true;
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}
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