gfx/src/psshared/nsPaperPS.h
author Alfred Kayser <alfredkayser@gmail.com>
Sun, 04 Oct 2009 19:20:45 +0200
changeset 33443 44694b467f519f6c7f7d61587cd18abba21aa3a2
parent 1 9b2a99adc05e53cd4010de512f50118594756650
permissions -rw-r--r--
Bug 510844 - Remove memcpy()s for compressed jar reading. r=taras

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef _PAPERPS_H_
#define _PAPERPS_H_

#include "prtypes.h"
#include "nsDebug.h"
#include "psSharedCore.h"

struct nsPaperSizePS_ {
    const char *name;
    float width_mm;
    float height_mm;
    PRBool isMetric;        // Present to the user in metric, if possible
};

class NS_PSSHARED nsPaperSizePS {
    public:
        /** ---------------------------------------------------
         * Constructor
         */
        nsPaperSizePS() { mCurrent = 0; }

        /** ---------------------------------------------------
         * @return PR_TRUE if the cursor points past the last item.
         */
        PRBool AtEnd() { return mCurrent >= mCount; }

        /** ---------------------------------------------------
         * Position the cursor at the beginning of the paper size list.
         * @return VOID
         */
        void First() { mCurrent = 0; }

        /** ---------------------------------------------------
         * Advance the cursor to the next item.
         * @return VOID
         */
        void Next() {
            NS_ASSERTION(!AtEnd(), "Invalid current item");
            mCurrent++;
        }

        /** ---------------------------------------------------
         * Point the cursor to the entry with the given paper name.
         * @return PR_TRUE if pointing to a valid entry.
         */
        PRBool Find(const char *aName);

        /** ---------------------------------------------------
         * @return a pointer to the name of the current paper size
         */
        const char *Name() {
            NS_PRECONDITION(!AtEnd(), "Invalid current item");
            return mList[mCurrent].name;
        }

        /** ---------------------------------------------------
         * @return the width of the page in millimeters
         */
        float Width_mm() {
            NS_PRECONDITION(!AtEnd(), "Invalid current item");
            return mList[mCurrent].width_mm;
        }

        /** ---------------------------------------------------
         * @return the height of the page in millimeters
         */
        float Height_mm() {
            NS_PRECONDITION(!AtEnd(), "Invalid current item");
            return mList[mCurrent].height_mm;
        }

        /** ---------------------------------------------------
         * @return PR_TRUE if the paper should be presented to
         *                 the user in metric units.
         */
        PRBool IsMetric() {
            NS_PRECONDITION(!AtEnd(), "Invalid current item");
            return mList[mCurrent].isMetric;
        }

    private:
        unsigned int mCurrent;
        // the class visibility should export these, but it doesn't
        static NS_PSSHARED_STATIC_MEMBER_(const nsPaperSizePS_) mList[];
        static NS_PSSHARED_STATIC_MEMBER_(const unsigned int) mCount;
};

#endif