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cb18fe8603
This patch implements a page cache that is invalidated in a LRU fashion. Pages are added to the cache as soon as they become visible. When the cache is full and a new page that isn't in the cache becomes visible, the least recently viewed page in the cache is evicted from memory and the new one takes it's place. The cache size is configurable using the page-cache-size configuration variable, with a default value of 15 pages. Very large values for the cache size are not recommended, though, as it will stress the system memory out. The old periodic page reclaiming code is no longer necessary with this patch, so I removed it. Special thanks to Ignas Anikevičius, and Sebastian Ramacher for the inspirations. Signed-off-by: Sebastian Ramacher <sebastian+dev@ramacher.at>
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/* See LICENSE file for license and copyright information */
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#ifndef PAGE_WIDGET_H
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#define PAGE_WIDGET_H
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#include <gtk/gtk.h>
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#include "document.h"
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/**
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* The page view widget. The widget handles all the rendering on its own. It
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* only has to be resized. The widget also manages and handles all the
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* rectangles for highlighting.
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*
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* Before the properties contain the correct values, 'draw-links' has to be set
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* to TRUE at least one time.
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* */
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typedef struct zathura_page_widget_s ZathuraPage;
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typedef struct zathura_page_widget_class_s ZathuraPageClass;
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struct zathura_page_widget_s
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{
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GtkDrawingArea parent;
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};
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struct zathura_page_widget_class_s
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{
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GtkDrawingAreaClass parent_class;
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};
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#define ZATHURA_TYPE_PAGE \
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(zathura_page_widget_get_type ())
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#define ZATHURA_PAGE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), ZATHURA_TYPE_PAGE, ZathuraPage))
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#define ZATHURA_PAGE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_CAST ((obj), ZATHURA_TYPE_PAGE, ZathuraPageClass))
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#define ZATHURA_IS_PAGE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), ZATHURA_TYPE_PAGE))
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#define ZATHURA_IS_PAGE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE ((obj), ZATHURA_TYPE_PAGE))
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#define ZATHURA_PAGE_GET_CLASS \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), ZATHURA_TYPE_PAGE, ZathuraPageClass))
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/**
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* Returns the type of the page view widget.
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* @return the type
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*/
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GType zathura_page_widget_get_type(void);
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/**
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* Create a page view widget.
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* @param zathura the zathura instance
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* @param page the page to be displayed
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* @return a page view widget
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*/
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GtkWidget* zathura_page_widget_new(zathura_t* zathura, zathura_page_t* page);
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/**
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* Update the widget's surface. This should only be called from the render
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* thread.
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* @param widget the widget
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* @param surface the new surface
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*/
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void zathura_page_widget_update_surface(ZathuraPage* widget, cairo_surface_t* surface);
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/**
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* Draw a rectangle to mark links or search results
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* @param widget the widget
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* @param rectangle the rectangle
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* @param linkid the link id if it's a link, -1 otherwise
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*/
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void zathura_page_widget_draw_rectangle(ZathuraPage* widget, zathura_rectangle_t* rectangle, int linkid);
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/**
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* Clear all rectangles.
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* @param widget the widget
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*/
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void zathura_page_widget_clear_rectangles(ZathuraPage* widget);
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/**
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* Returns the zathura link object at the given index
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*
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* @param widget the widget
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* @param index Index of the link
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* @return Link object or NULL if an error occured
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*/
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zathura_link_t* zathura_page_widget_link_get(ZathuraPage* widget, unsigned int index);
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/**
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* Update the last view time of the page.
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*
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* @param widget the widget
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*/
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void zathura_page_widget_update_view_time(ZathuraPage* widget);
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#endif
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