k-9/src/com/fsck/k9/FontSizes.java

package com.fsck.k9;

import android.content.SharedPreferences;
import android.util.TypedValue;
import android.widget.TextView;

import com.fsck.k9.preferences.GlobalSettings;

/**
 * Manage font size of the information displayed in the account list, folder
 * list, message list and in the message view.
 */
public class FontSizes {
    /*
     * Keys for the preference storage.
     */
    private static final String ACCOUNT_NAME = "fontSizeAccountName";
    private static final String ACCOUNT_DESCRIPTION = "fontSizeAccountDescription";
    private static final String FOLDER_NAME = "fontSizeFolderName";
    private static final String FOLDER_STATUS = "fontSizeFolderStatus";
    private static final String MESSAGE_LIST_SUBJECT = "fontSizeMessageListSubject";
    private static final String MESSAGE_LIST_SENDER = "fontSizeMessageListSender";
    private static final String MESSAGE_LIST_DATE = "fontSizeMessageListDate";
    private static final String MESSAGE_LIST_PREVIEW = "fontSizeMessageListPreview";
    private static final String MESSAGE_VIEW_SENDER = "fontSizeMessageViewSender";
    private static final String MESSAGE_VIEW_TO = "fontSizeMessageViewTo";
    private static final String MESSAGE_VIEW_CC = "fontSizeMessageViewCC";
    private static final String MESSAGE_VIEW_ADDITIONAL_HEADERS = "fontSizeMessageViewAdditionalHeaders";
    private static final String MESSAGE_VIEW_SUBJECT = "fontSizeMessageViewSubject";
    private static final String MESSAGE_VIEW_DATE = "fontSizeMessageViewDate";
    private static final String MESSAGE_VIEW_CONTENT = "fontSizeMessageViewContent";
    private static final String MESSAGE_VIEW_CONTENT_PERCENT = "fontSizeMessageViewContentPercent";
    private static final String MESSAGE_COMPOSE_INPUT = "fontSizeMessageComposeInput";

    /*
     * Values for the font sizes in SP (Scale-independent Pixels)
     */
    public static final int FONT_DEFAULT = -1;   // Don't force-reset the size of this setting
    public static final int FONT_10SP = 10;
    public static final int FONT_12SP = 12;
    public static final int SMALL = 14;         // ?android:attr/textAppearanceSmall
    public static final int FONT_16SP = 16;
    public static final int MEDIUM = 18;        // ?android:attr/textAppearanceMedium
    public static final int FONT_20SP = 20;
    public static final int LARGE = 22;         // ?android:attr/textAppearanceLarge


    /**
     * Font size of account names in the account list activity.
     */
    private int accountName;

    /**
     * Font size of account descriptions in the account list activity.
     */
    private int accountDescription;

    /**
     * Font size of folder names in the folder list activity.
     */
    private int folderName;

    /**
     * Font size of the folder status in the folder list activity.
     */
    private int folderStatus;

    /**
     * Font size of message subjects in the message list activity.
     */
    private int messageListSubject;

    /**
     * Font size of message senders in the message list activity.
     */
    private int messageListSender;

    /**
     * Font size of message dates in the message list activity.
     */
    private int messageListDate;

    /**
     * Font size of message preview in the message list activity.
     */
    private int messageListPreview;

    /**
     * Font size of the message sender in the message view activity.
     */
    private int messageViewSender;

    /**
     * Font size of the message receiver(s) (To) in the message view activity.
     */
    private int messageViewTo;

    /**
     * Font size of the message receiver(s) (CC) in the message view activity.
     */
    private int messageViewCC;

    /**
     * Font size of additional headers in the message view activity.
     */
    private int messageViewAdditionalHeaders;

    /**
     * Font size of the message subject in the message view activity.
     */
    private int messageViewSubject;

    /**
     * Font size of the message date and time in the message view activity.
     */
    private int messageViewDate;

    /**
     * Font size of the message content in the message view activity, as percent from default size.
     */
    private int messageViewContentPercent;

    /**
     * Font size for the input fields in the message compose activity.
     */
    private int messageComposeInput;


    /**
     * Create a <code>FontSizes</code> object with default values.
     */
    public FontSizes() {
        accountName = FONT_DEFAULT;
        accountDescription = FONT_DEFAULT;

        folderName = FONT_DEFAULT;
        folderStatus = FONT_DEFAULT;

        messageListSubject = FONT_DEFAULT;
        messageListSender = FONT_DEFAULT;
        messageListDate = FONT_DEFAULT;
        messageListPreview = FONT_DEFAULT;

        messageViewSender = FONT_DEFAULT;
        messageViewTo = FONT_DEFAULT;
        messageViewCC = FONT_DEFAULT;
        messageViewAdditionalHeaders = FONT_DEFAULT;
        messageViewSubject = FONT_DEFAULT;
        messageViewDate = FONT_DEFAULT;
        messageViewContentPercent = 100;

        messageComposeInput = MEDIUM;
    }

    /**
     * Permanently save the font size settings.
     *
     * @param editor Used to save the font size settings.
     */
    public void save(SharedPreferences.Editor editor) {
        editor.putInt(ACCOUNT_NAME, accountName);
        editor.putInt(ACCOUNT_DESCRIPTION, accountDescription);

        editor.putInt(FOLDER_NAME, folderName);
        editor.putInt(FOLDER_STATUS, folderStatus);

        editor.putInt(MESSAGE_LIST_SUBJECT, messageListSubject);
        editor.putInt(MESSAGE_LIST_SENDER, messageListSender);
        editor.putInt(MESSAGE_LIST_DATE, messageListDate);
        editor.putInt(MESSAGE_LIST_PREVIEW, messageListPreview);

        editor.putInt(MESSAGE_VIEW_SENDER, messageViewSender);
        editor.putInt(MESSAGE_VIEW_TO, messageViewTo);
        editor.putInt(MESSAGE_VIEW_CC, messageViewCC);
        editor.putInt(MESSAGE_VIEW_ADDITIONAL_HEADERS, messageViewAdditionalHeaders);
        editor.putInt(MESSAGE_VIEW_SUBJECT, messageViewSubject);
        editor.putInt(MESSAGE_VIEW_DATE, messageViewDate);
        editor.putInt(MESSAGE_VIEW_CONTENT_PERCENT, getMessageViewContentAsPercent());

        editor.putInt(MESSAGE_COMPOSE_INPUT, messageComposeInput);
    }

    /**
     * Load the font size settings from permanent storage.
     *
     * @param prefs Used to load the font size settings.
     */
    public void load(SharedPreferences prefs) {
        accountName = prefs.getInt(ACCOUNT_NAME, accountName);
        accountDescription = prefs.getInt(ACCOUNT_DESCRIPTION, accountDescription);

        folderName = prefs.getInt(FOLDER_NAME, folderName);
        folderStatus = prefs.getInt(FOLDER_STATUS, folderStatus);

        messageListSubject = prefs.getInt(MESSAGE_LIST_SUBJECT, messageListSubject);
        messageListSender = prefs.getInt(MESSAGE_LIST_SENDER, messageListSender);
        messageListDate = prefs.getInt(MESSAGE_LIST_DATE, messageListDate);
        messageListPreview = prefs.getInt(MESSAGE_LIST_PREVIEW, messageListPreview);

        messageViewSender = prefs.getInt(MESSAGE_VIEW_SENDER, messageViewSender);
        messageViewTo = prefs.getInt(MESSAGE_VIEW_TO, messageViewTo);
        messageViewCC = prefs.getInt(MESSAGE_VIEW_CC, messageViewCC);
        messageViewAdditionalHeaders = prefs.getInt(MESSAGE_VIEW_ADDITIONAL_HEADERS, messageViewAdditionalHeaders);
        messageViewSubject = prefs.getInt(MESSAGE_VIEW_SUBJECT, messageViewSubject);
        messageViewDate = prefs.getInt(MESSAGE_VIEW_DATE, messageViewDate);

        loadMessageViewContentPercent(prefs);

        messageComposeInput = prefs.getInt(MESSAGE_COMPOSE_INPUT, messageComposeInput);
    }

    private void loadMessageViewContentPercent(SharedPreferences prefs) {
        int fallbackValue = 100;
        if (!prefs.contains(MESSAGE_VIEW_CONTENT_PERCENT)) {
            int oldValue = prefs.getInt(MESSAGE_VIEW_CONTENT, 3);
            fallbackValue = GlobalSettings.SettingsUpgraderV31.convertFromOldSize(oldValue);
        }

        setMessageViewContentAsPercent(prefs.getInt(MESSAGE_VIEW_CONTENT_PERCENT, fallbackValue));
    }

    public int getAccountName() {
        return accountName;
    }

    public void setAccountName(int accountName) {
        this.accountName = accountName;
    }

    public int getAccountDescription() {
        return accountDescription;
    }

    public void setAccountDescription(int accountDescription) {
        this.accountDescription = accountDescription;
    }

    public int getFolderName() {
        return folderName;
    }

    public void setFolderName(int folderName) {
        this.folderName = folderName;
    }

    public int getFolderStatus() {
        return folderStatus;
    }

    public void setFolderStatus(int folderStatus) {
        this.folderStatus = folderStatus;
    }

    public int getMessageListSubject() {
        return messageListSubject;
    }

    public void setMessageListSubject(int messageListSubject) {
        this.messageListSubject = messageListSubject;
    }

    public int getMessageListSender() {
        return messageListSender;
    }

    public void setMessageListSender(int messageListSender) {
        this.messageListSender = messageListSender;
    }

    public int getMessageListDate() {
        return messageListDate;
    }

    public void setMessageListDate(int messageListDate) {
        this.messageListDate = messageListDate;
    }

    public int getMessageListPreview() {
        return messageListPreview;
    }

    public void setMessageListPreview(int messageListPreview) {
        this.messageListPreview = messageListPreview;
    }

    public int getMessageViewSender() {
        return messageViewSender;
    }

    public void setMessageViewSender(int messageViewSender) {
        this.messageViewSender = messageViewSender;
    }

    public int getMessageViewTo() {
        return messageViewTo;
    }

    public void setMessageViewTo(int messageViewTo) {
        this.messageViewTo = messageViewTo;
    }

    public int getMessageViewCC() {
        return messageViewCC;
    }

    public void setMessageViewCC(int messageViewCC) {
        this.messageViewCC = messageViewCC;
    }

    public int getMessageViewAdditionalHeaders() {
        return messageViewAdditionalHeaders;
    }

    public void setMessageViewAdditionalHeaders(int messageViewAdditionalHeaders) {
        this.messageViewAdditionalHeaders = messageViewAdditionalHeaders;
    }

    public int getMessageViewSubject() {
        return messageViewSubject;
    }

    public void setMessageViewSubject(int messageViewSubject) {
        this.messageViewSubject = messageViewSubject;
    }

    public int getMessageViewDate() {
        return messageViewDate;
    }

    public void setMessageViewDate(int messageViewDate) {
        this.messageViewDate = messageViewDate;
    }

    public int getMessageViewContentAsPercent() {
        return messageViewContentPercent;
    }

    public void setMessageViewContentAsPercent(int size) {
        messageViewContentPercent = size;
    }

    public int getMessageComposeInput() {
        return messageComposeInput;
    }

    public void setMessageComposeInput(int messageComposeInput) {
        this.messageComposeInput = messageComposeInput;
    }

    // This, arguably, should live somewhere in a view class, but since we call it from activities, fragments
    // and views, where isn't exactly clear.
    public void setViewTextSize(TextView v, int fontSize) {
        if (fontSize != FONT_DEFAULT) {
            v.setTextSize(TypedValue.COMPLEX_UNIT_SP, fontSize);
        }
    }
}