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107 lines
3 KiB
C
107 lines
3 KiB
C
/* See LICENSE file for license and copyright information */
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#ifndef UTILS_H
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#define UTILS_H
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#include <stdbool.h>
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#include <gtk/gtk.h>
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#include <girara/types.h>
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#include "document.h"
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#define LENGTH(x) (sizeof(x)/sizeof((x)[0]))
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typedef struct page_offset_s
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{
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int x;
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int y;
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} page_offset_t;
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/**
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* Returns the file extension of a path
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*
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* @param path Path to the file
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* @return The file extension or NULL
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*/
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const char* file_get_extension(const char* path);
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/**
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* This function checks if the file has a valid extension. A extension is
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* evaluated as valid if it matches a supported filetype.
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*
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* @param zathura Zathura object
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* @param path The path to the file
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* @return true if the extension is valid, otherwise false
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*/
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bool file_valid_extension(zathura_t* zathura, const char* path);
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/**
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* Executes a system command and saves its output into output
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*
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* @param argv The command
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* @param output Pointer where the output will be saved
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* @return true if no error occured, otherwise false
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*/
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bool execute_command(char* const argv[], char** output);
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/**
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* Generates the document index based upon the list retreived from the document
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* object.
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*
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* @param model The tree model
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* @param parent The tree iterator parent
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* @param tree The Tree iterator
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*/
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void document_index_build(GtkTreeModel* model, GtkTreeIter* parent, girara_tree_node_t* tree);
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/**
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* Calculates the offset of the page to the top of the viewing area as
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* well as to the left side of it. The result has to be freed.
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*
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* @param page The Page
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* @param offset Applied offset
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* @return The calculated offset or NULL if an error occured
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*/
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void page_calculate_offset(zathura_page_t* page, page_offset_t* offset);
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/**
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* Rotate a rectangle by 0, 90, 180 or 270 degree
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*
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* @param rectangle the rectangle to rotate
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* @param degree rotation degree
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* @param height the height of the enclosing rectangle
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* @param width the width of the enclosing rectangle
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* @return the rotated rectangle
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*/
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zathura_rectangle_t rotate_rectangle(zathura_rectangle_t rectangle, unsigned int degree, int height, int width);
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/**
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* Calculates the new coordinates based on the rotation and scale level of the
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* document for the given rectangle
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*
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* @param page Page where the rectangle should be
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* @param rectangle The rectangle
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* @return New rectangle
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*/
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zathura_rectangle_t recalc_rectangle(zathura_page_t* page, zathura_rectangle_t rectangle);
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/**
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* Set adjustment of a GtkAdjustment respecting its limits.
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* @param adjust the GtkAdkustment instance
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* @param value the new adjustment
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*/
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void set_adjustment(GtkAdjustment* adjust, gdouble value);
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/**
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* Calculate the page size according to the corrent scaling and rotation if
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* desired.
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* @param page the page
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* @param page_height the resulting page height
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* @param page_width the resultung page width
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* @param rotate honor page's rotation
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*/
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void
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page_calc_height_width(zathura_page_t* page, unsigned int* page_height, unsigned int* page_width, bool rotate);
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#endif // UTILS_H
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