pdf::PDFRenderRequests Class Reference

#include <pdf_render_requests.h>

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Public Member Functions
	PDFRenderRequests ()
	~PDFRenderRequests ()
void	add_request (const size_t page_number, const int priority)
	Add render request with priority.
void	append_request (const size_t page_number)
	Append render request without priority.
void	remove_request (const size_t page_number)
	Remove render request.
void	clear ()
	Clear all of the render requests.
int	get_priority (const size_t page_number)
void	update (const std::vector< size_t > &requests)
	Update the queue by new requests.
bool	contains (const size_t page_number)
	Check whether the page is contained in the queue.

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Detailed Description

Definition at line 38 of file pdf_render_requests.h.

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Constructor & Destructor Documentation

pdf::PDFRenderRequests::PDFRenderRequests

(

)

Definition at line 34 of file pdf_render_requests.cpp.

{
}

pdf::PDFRenderRequests::~PDFRenderRequests

(

)

Definition at line 38 of file pdf_render_requests.cpp.

{
}

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Member Function Documentation

void pdf::PDFRenderRequests::add_request	(	const size_t	page_number,
		const int	priority
	)

Add render request with priority.

Definition at line 42 of file pdf_render_requests.cpp.

{
    ScopeMutex m(&queue_mutex);
    queue[page_number] = priority;
}

void pdf::PDFRenderRequests::append_request

(

const size_t

page_number

)

Append render request without priority.

Definition at line 48 of file pdf_render_requests.cpp.

{
    ScopeMutex m(&queue_mutex);
    // the request is appeneded with the lowest priority in the queue
    if (queue.find(page_number) != queue.end())
    {
        // if the page is in the request list, stop appending
        return;
    }

    int priority = -1;
    QueueIter iter = queue.begin();
    for (; iter != queue.end(); ++iter)
    {
        if (iter->second > priority)
        {
            priority = iter->second;
        }
    }

    queue[page_number] = (priority + 1);
}

void pdf::PDFRenderRequests::clear

(

void

)

Clear all of the render requests.

Definition at line 81 of file pdf_render_requests.cpp.

{
    ScopeMutex m(&queue_mutex);
    queue.clear();
}

bool pdf::PDFRenderRequests::contains

(

const size_t

page_number

)

Check whether the page is contained in the queue.

Definition at line 108 of file pdf_render_requests.cpp.

{
    ScopeMutex m(&queue_mutex);
    return (queue.find(page_number) != queue.end());
}

int pdf::PDFRenderRequests::get_priority

(

const size_t

page_number

)

Get priority of a page. Return -1 means the page is not in the request queue

Definition at line 87 of file pdf_render_requests.cpp.

References pdf::PRIORITY_MIN.

Referenced by pdf::compare_priority().

{
    ScopeMutex m(&queue_mutex);
    QueueIter iter = queue.find(page_number);
    if (iter == queue.end())
    {
        return PRIORITY_MIN;
    }
    return queue[page_number];
}

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void pdf::PDFRenderRequests::remove_request

(

const size_t

page_number

)

Remove render request.

Definition at line 71 of file pdf_render_requests.cpp.

{
    ScopeMutex m(&queue_mutex);
    QueueIter iter = queue.find(page_number);
    if (iter != queue.end())
    {
        queue.erase(iter);
    }
}

void pdf::PDFRenderRequests::update

(

const std::vector< size_t > &

requests

)

Update the queue by new requests.

Definition at line 98 of file pdf_render_requests.cpp.

Referenced by pdf::PDFPrerenderPolicyNormal::generate_requests_list().

{
    ScopeMutex m(&queue_mutex);
    queue.clear();
    for (size_t idx = 0; idx < requests.size(); ++idx)
    {
        queue[requests.at(idx)] = idx;
    }
}

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The documentation for this class was generated from the following files:

• pdf_render_requests.h
• pdf_render_requests.cpp