zathura/page.c
2014-01-19 16:47:08 +01:00

362 lines
7.8 KiB
C

/* See LICENSE file for license and copyright information */
#include <girara/session.h>
#include <girara/utils.h>
#include <glib/gi18n.h>
#include "document.h"
#include "page.h"
#include "plugin.h"
#include "utils.h"
#include "internal.h"
#include "types.h"
struct zathura_page_s {
double height; /**< Page height */
double width; /**< Page width */
unsigned int index; /**< Page number */
void* data; /**< Custom data */
bool visible; /**< Page is visible */
zathura_document_t* document; /**< Document */
};
zathura_page_t*
zathura_page_new(zathura_document_t* document, unsigned int index, zathura_error_t* error)
{
if (document == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
goto error_ret;
}
/* init page */
zathura_page_t* page = g_try_malloc0(sizeof(zathura_page_t));
if (page == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_OUT_OF_MEMORY;
}
goto error_ret;
}
page->index = index;
page->visible = false;
page->document = document;
/* init plugin */
zathura_plugin_t* plugin = zathura_document_get_plugin(document);
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
if (functions->page_init == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_NOT_IMPLEMENTED;
}
goto error_free;
}
zathura_error_t ret = functions->page_init(page);
if (ret != ZATHURA_ERROR_OK) {
if (error != NULL) {
*error = ret;
}
goto error_free;
}
return page;
error_free:
if (page != NULL) {
zathura_page_free(page);
}
error_ret:
return NULL;
}
zathura_error_t
zathura_page_free(zathura_page_t* page)
{
if (page == NULL) {
return ZATHURA_ERROR_INVALID_ARGUMENTS;
}
if (page->document == NULL) {
g_free(page);
return ZATHURA_ERROR_INVALID_ARGUMENTS;
}
zathura_plugin_t* plugin = zathura_document_get_plugin(page->document);
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
if (functions->page_clear == NULL) {
return ZATHURA_ERROR_NOT_IMPLEMENTED;
}
zathura_error_t error = functions->page_clear(page, page->data);
g_free(page);
return error;
}
zathura_document_t*
zathura_page_get_document(zathura_page_t* page)
{
if (page == NULL) {
return NULL;
}
return page->document;
}
unsigned int
zathura_page_get_index(zathura_page_t* page)
{
if (page == NULL) {
return 0;
}
return page->index;
}
double
zathura_page_get_width(zathura_page_t* page)
{
if (page == NULL) {
return -1;
}
return page->width;
}
void
zathura_page_set_width(zathura_page_t* page, double width)
{
if (page == NULL) {
return;
}
page->width = width;
}
double
zathura_page_get_height(zathura_page_t* page)
{
if (page == NULL) {
return -1;
}
return page->height;
}
void
zathura_page_set_height(zathura_page_t* page, double height)
{
if (page == NULL) {
return;
}
page->height = height;
}
bool
zathura_page_get_visibility(zathura_page_t* page)
{
if (page == NULL) {
return false;
}
return page->visible;
}
void
zathura_page_set_visibility(zathura_page_t* page, bool visibility)
{
if (page == NULL) {
return;
}
page->visible = visibility;
}
void*
zathura_page_get_data(zathura_page_t* page)
{
if (page == NULL) {
return NULL;
}
return page->data;
}
void
zathura_page_set_data(zathura_page_t* page, void* data)
{
if (page == NULL) {
return;
}
page->data = data;
}
girara_list_t*
zathura_page_search_text(zathura_page_t* page, const char* text, zathura_error_t* error)
{
if (page == NULL || page->document == NULL || text == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
return NULL;
}
zathura_plugin_t* plugin = zathura_document_get_plugin(page->document);
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
if (functions->page_search_text == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_NOT_IMPLEMENTED;
}
return NULL;
}
return functions->page_search_text(page, page->data, text, error);
}
girara_list_t*
zathura_page_links_get(zathura_page_t* page, zathura_error_t* error)
{
if (page == NULL || page->document == NULL ) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
return NULL;
}
zathura_plugin_t* plugin = zathura_document_get_plugin(page->document);
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
if (functions->page_links_get == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_NOT_IMPLEMENTED;
}
return NULL;
}
return functions->page_links_get(page, page->data, error);
}
zathura_error_t
zathura_page_links_free(girara_list_t* UNUSED(list))
{
return false;
}
girara_list_t*
zathura_page_form_fields_get(zathura_page_t* page, zathura_error_t* error)
{
if (page == NULL || page->document == NULL ) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
return NULL;
}
zathura_plugin_t* plugin = zathura_document_get_plugin(page->document);
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
if (functions->page_form_fields_get == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_NOT_IMPLEMENTED;
}
return NULL;
}
return functions->page_form_fields_get(page, page->data, error);
}
zathura_error_t
zathura_page_form_fields_free(girara_list_t* UNUSED(list))
{
return ZATHURA_ERROR_NOT_IMPLEMENTED;
}
girara_list_t*
zathura_page_images_get(zathura_page_t* page, zathura_error_t* error)
{
if (page == NULL || page->document == NULL ) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
return NULL;
}
zathura_plugin_t* plugin = zathura_document_get_plugin(page->document);
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
if (functions->page_images_get == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_NOT_IMPLEMENTED;
}
return NULL;
}
return functions->page_images_get(page, page->data, error);
}
cairo_surface_t*
zathura_page_image_get_cairo(zathura_page_t* page, zathura_image_t* image, zathura_error_t* error)
{
if (page == NULL || page->document == NULL || image == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
return NULL;
}
zathura_plugin_t* plugin = zathura_document_get_plugin(page->document);
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
if (functions->page_image_get_cairo == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_NOT_IMPLEMENTED;
}
return NULL;
}
return functions->page_image_get_cairo(page, page->data, image, error);
}
char*
zathura_page_get_text(zathura_page_t* page, zathura_rectangle_t rectangle, zathura_error_t* error)
{
if (page == NULL || page->document == NULL ) {
if (error) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
return NULL;
}
zathura_plugin_t* plugin = zathura_document_get_plugin(page->document);
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
if (functions->page_get_text == NULL) {
if (error) {
*error = ZATHURA_ERROR_NOT_IMPLEMENTED;
}
return NULL;
}
return functions->page_get_text(page, page->data, rectangle, error);
}
zathura_error_t
zathura_page_render(zathura_page_t* page, cairo_t* cairo, bool printing)
{
if (page == NULL || page->document == NULL || cairo == NULL) {
return ZATHURA_ERROR_INVALID_ARGUMENTS;
}
zathura_plugin_t* plugin = zathura_document_get_plugin(page->document);
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
if (functions->page_render_cairo == NULL) {
return ZATHURA_ERROR_NOT_IMPLEMENTED;
}
return functions->page_render_cairo(page, page->data, cairo, printing);
}