zathura/links.c

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/* See LICENSE file for license and copyright information */
#include <glib.h>
#include <glib/gi18n.h>
#include <girara/utils.h>
#include <girara/session.h>
#include <girara/settings.h>
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#include "adjustment.h"
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#include "links.h"
#include "zathura.h"
#include "document.h"
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#include "utils.h"
#include "page.h"
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struct zathura_link_s {
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zathura_rectangle_t position; /**< Position of the link */
zathura_link_type_t type; /**< Link type */
zathura_link_target_t target; /**< Link target */
};
/* forward declarations */
static void link_remote(zathura_t* zathura, const char* file);
static void link_launch(zathura_t* zathura, zathura_link_t* link);
zathura_link_t*
zathura_link_new(zathura_link_type_t type, zathura_rectangle_t position,
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zathura_link_target_t target)
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{
zathura_link_t* link = g_malloc0(sizeof(zathura_link_t));
link->type = type;
link->position = position;
switch (type) {
case ZATHURA_LINK_NONE:
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case ZATHURA_LINK_GOTO_DEST:
link->target = target;
if (target.value != NULL) {
link->target.value = g_strdup(target.value);
}
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break;
case ZATHURA_LINK_GOTO_REMOTE:
case ZATHURA_LINK_URI:
case ZATHURA_LINK_LAUNCH:
case ZATHURA_LINK_NAMED:
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if (target.value == NULL) {
g_free(link);
return NULL;
}
link->target.value = g_strdup(target.value);
break;
default:
g_free(link);
return NULL;
}
return link;
}
void
zathura_link_free(zathura_link_t* link)
{
if (link == NULL) {
return;
}
switch (link->type) {
case ZATHURA_LINK_NONE:
case ZATHURA_LINK_GOTO_DEST:
case ZATHURA_LINK_GOTO_REMOTE:
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case ZATHURA_LINK_URI:
case ZATHURA_LINK_LAUNCH:
case ZATHURA_LINK_NAMED:
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if (link->target.value != NULL) {
g_free(link->target.value);
}
break;
default:
break;
}
g_free(link);
}
zathura_link_type_t
zathura_link_get_type(zathura_link_t* link)
{
if (link == NULL) {
return ZATHURA_LINK_INVALID;
}
return link->type;
}
zathura_rectangle_t
zathura_link_get_position(zathura_link_t* link)
{
if (link == NULL) {
zathura_rectangle_t position = { 0, 0, 0, 0 };
return position;
}
return link->position;
}
zathura_link_target_t
zathura_link_get_target(zathura_link_t* link)
{
if (link == NULL) {
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zathura_link_target_t target = { 0, NULL, 0, 0, 0, 0, 0, 0 };
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return target;
}
return link->target;
}
void
zathura_link_evaluate(zathura_t* zathura, zathura_link_t* link)
{
if (zathura == NULL || zathura->document == NULL || link == NULL) {
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return;
}
bool link_zoom = true;
girara_setting_get(zathura->ui.session, "link-zoom", &link_zoom);
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switch (link->type) {
case ZATHURA_LINK_GOTO_DEST:
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if (link->target.destination_type != ZATHURA_LINK_DESTINATION_UNKNOWN) {
if (link->target.scale != 0 && link_zoom) {
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zathura_document_set_scale(zathura->document, link->target.scale);
}
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/* get page */
zathura_page_t* page = zathura_document_get_page(zathura->document,
link->target.page_number);
if (page == NULL) {
return;
}
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/* compute the position with the page aligned to the top and left
of the viewport */
double pos_x=0, pos_y=0;
page_number_to_position(zathura->document, link->target.page_number,
0.0, 0.0, &pos_x, &pos_y);
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/* correct to place the target position at the top of the viewport */
/* NOTE: link->target is in page units, needs to be scaled and rotated */
unsigned int cell_height=0, cell_width=0;
zathura_document_get_cell_size(zathura->document, &cell_height, &cell_width);
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unsigned int doc_height=0, doc_width=0;
zathura_document_get_document_size(zathura->document, &doc_height, &doc_width);
bool link_hadjust = true;
girara_setting_get(zathura->ui.session, "link-hadjust", &link_hadjust);
/* scale and rotate */
double scale = zathura_document_get_scale(zathura->document);
double shiftx = link->target.left * scale / (double)cell_width;
double shifty = link->target.top * scale / (double)cell_height;
page_calc_position(zathura->document, shiftx, shifty, &shiftx, &shifty);
/* shift the position or set to auto */
if (link->target.destination_type == ZATHURA_LINK_DESTINATION_XYZ &&
link->target.left != -1 && link_hadjust == true) {
pos_x += shiftx / (double)doc_width;
} else {
pos_x = -1; /* -1 means automatic */
}
if (link->target.destination_type == ZATHURA_LINK_DESTINATION_XYZ &&
link->target.top != -1) {
pos_y += shifty / (double)doc_height;
} else {
pos_y = -1; /* -1 means automatic */
}
/* move to position */
zathura_jumplist_add(zathura);
position_set(zathura, pos_x, pos_y);
zathura_jumplist_add(zathura);
}
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break;
case ZATHURA_LINK_GOTO_REMOTE:
link_remote(zathura, link->target.value);
break;
case ZATHURA_LINK_URI:
if (girara_xdg_open(link->target.value) == false) {
girara_notify(zathura->ui.session, GIRARA_ERROR, _("Failed to run xdg-open."));
}
break;
case ZATHURA_LINK_LAUNCH:
link_launch(zathura, link);
break;
default:
break;
}
}
void
zathura_link_display(zathura_t* zathura, zathura_link_t* link)
{
zathura_link_type_t type = zathura_link_get_type(link);
zathura_link_target_t target = zathura_link_get_target(link);
switch (type) {
case ZATHURA_LINK_GOTO_DEST:
girara_notify(zathura->ui.session, GIRARA_INFO, _("Link: page %d"),
target.page_number);
break;
case ZATHURA_LINK_GOTO_REMOTE:
case ZATHURA_LINK_URI:
case ZATHURA_LINK_LAUNCH:
case ZATHURA_LINK_NAMED:
girara_notify(zathura->ui.session, GIRARA_INFO, _("Link: %s"),
target.value);
break;
default:
girara_notify(zathura->ui.session, GIRARA_ERROR, _("Link: Invalid"));
}
}
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static void
link_remote(zathura_t* zathura, const char* file)
{
if (zathura == NULL || file == NULL || zathura->document == NULL) {
return;
}
const char* path = zathura_document_get_path(zathura->document);
char* dir = g_path_get_dirname(path);
char* uri = g_build_filename(dir, file, NULL);
char* argv[] = {
*(zathura->global.arguments),
uri,
NULL
};
g_spawn_async(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, NULL);
g_free(uri);
g_free(dir);
}
static void
link_launch(zathura_t* zathura, zathura_link_t* link)
{
if (zathura == NULL || link == NULL || zathura->document == NULL) {
return;
}
/* get file path */
if (link->target.value == NULL) {
return;
};
char* path = NULL;
if (g_path_is_absolute(link->target.value) == TRUE) {
path = g_strdup(link->target.value);
} else {
const char* document = zathura_document_get_path(zathura->document);
char* dir = g_path_get_dirname(document);
path = g_build_filename(dir, link->target.value, NULL);
g_free(dir);
}
if (girara_xdg_open(path) == false) {
girara_notify(zathura->ui.session, GIRARA_ERROR, _("Failed to run xdg-open."));
}
g_free(path);
}