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Extract code to scale the slider value for the message content font setting

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This commit is contained in:
cketti 2014-02-13 06:04:19 +01:00
parent f1682fe517
commit 53eac39a90
1 changed files with 12 additions and 11 deletions
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23
src/com/fsck/k9/activity/setup/FontSizeSettings.java
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@ -121,10 +121,8 @@ public class FontSizeSettings extends K9PreferenceActivity {
mMessageViewContentSlider = (SliderPreference) findPreference(
PREFERENCE_MESSAGE_VIEW_CONTENT_FONT_SLIDER);
// Scale to [0, 1]
mMessageViewContentSlider.setValue((float)
(fontSizes.getMessageViewContentAsPercent() - FONT_PERCENT_MIN) /
(FONT_PERCENT_MAX - FONT_PERCENT_MIN));
mMessageViewContentSlider.setValue(scaleFromInt(fontSizes.getMessageViewContentAsPercent()));
mMessageViewContentSlider.setOnPreferenceChangeListener(
new Preference.OnPreferenceChangeListener() {
// Show the preference value in the preference summary field.
@ -132,9 +130,7 @@ public class FontSizeSettings extends K9PreferenceActivity {
public boolean onPreferenceChange(final Preference preference, final Object newValue) {
final SliderPreference slider = (SliderPreference) preference;
final Float value = (Float) newValue;
// Scale from [0, 1]
slider.setSummary(String.valueOf((int)(FONT_PERCENT_MIN +
value * (FONT_PERCENT_MAX - FONT_PERCENT_MIN))) + "%");
slider.setSummary(String.valueOf(scaleToInt(value) + "%"));
slider.setDialogTitle(slider.getTitle() + " " + slider.getSummary());
if (slider.getDialog() != null) {
slider.getDialog().setTitle(slider.getDialogTitle());
@ -175,10 +171,7 @@ public class FontSizeSettings extends K9PreferenceActivity {
fontSizes.setMessageViewAdditionalHeaders(Integer.parseInt(mMessageViewAdditionalHeaders.getValue()));
fontSizes.setMessageViewSubject(Integer.parseInt(mMessageViewSubject.getValue()));
fontSizes.setMessageViewDate(Integer.parseInt(mMessageViewDate.getValue()));
// Scale from [0, 1]
fontSizes.setMessageViewContentAsPercent((int)(FONT_PERCENT_MIN +
mMessageViewContentSlider.getValue() *
(FONT_PERCENT_MAX - FONT_PERCENT_MIN)));
fontSizes.setMessageViewContentAsPercent(scaleToInt(mMessageViewContentSlider.getValue()));
fontSizes.setMessageComposeInput(Integer.parseInt(mMessageComposeInput.getValue()));
@ -187,6 +180,14 @@ public class FontSizeSettings extends K9PreferenceActivity {
fontSizes.save(editor);
editor.commit();
}
private int scaleToInt(float sliderValue) {
return (int) (FONT_PERCENT_MIN + sliderValue * (FONT_PERCENT_MAX - FONT_PERCENT_MIN));
}
private float scaleFromInt(int value) {
return (float) (value - FONT_PERCENT_MIN) / (FONT_PERCENT_MAX - FONT_PERCENT_MIN);
}
@Override
public void onBackPressed() {