zathura/utils.h
2012-02-08 15:30:13 +01:00

86 lines
2.2 KiB
C

/* See LICENSE file for license and copyright information */
#ifndef UTILS_H
#define UTILS_H
#include <stdbool.h>
#include <gtk/gtk.h>
#include <girara/types.h>
#include "document.h"
#define LENGTH(x) (sizeof(x)/sizeof((x)[0]))
typedef struct page_offset_s
{
int x;
int y;
} page_offset_t;
/**
* Checks if the given file exists
*
* @param path Path to the file
* @return true if the file exists, otherwise false
*/
bool file_exists(const char* path);
/**
* Returns the file extension of a path
*
* @param path Path to the file
* @return The file extension or NULL
*/
const char* file_get_extension(const char* path);
/**
* This function checks if the file has a valid extension. A extension is
* evaluated as valid if it matches a supported filetype.
*
* @param zathura Zathura object
* @param path The path to the file
* @return true if the extension is valid, otherwise false
*/
bool file_valid_extension(zathura_t* zathura, const char* path);
/**
* Executes a system command and saves its output into output
*
* @param argv The command
* @param output Pointer where the output will be saved
* @return true if no error occured, otherwise false
*/
bool execute_command(char* const argv[], char** output);
/**
* Generates the document index based upon the list retreived from the document
* object.
*
* @param model The tree model
* @param parent The tree iterator parent
* @param tree The Tree iterator
*/
void document_index_build(GtkTreeModel* model, GtkTreeIter* parent, girara_tree_node_t* tree);
/**
* Calculates the offset of the page to the top of the viewing area as
* well as to the left side of it. The result has to be freed.
*
* @param page The Page
* @param offset Applied offset
* @return The calculated offset or NULL if an error occured
*/
void page_calculate_offset(zathura_page_t* page, page_offset_t* offset);
/**
* Calculates the new coordinates based on the rotation and scale level of the
* document for the given rectangle
*
* @param page Page where the rectangle should be
* @param rectangle The rectangle
* @return New rectangle
*/
zathura_rectangle_t recalc_rectangle(zathura_page_t* page, zathura_rectangle_t rectangle);
#endif // UTILS_H