tdesktop/Telegram/SourceFiles/gui/flatcheckbox.cpp

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/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014 John Preston, https://desktop.telegram.org
*/
#include "stdafx.h"
#include "style.h"
#include "lang.h"
#include "flatcheckbox.h"
FlatCheckbox::FlatCheckbox(QWidget *parent, const QString &text, bool checked, const style::flatCheckbox &st) : Button(parent),
_st(st), a_over(0, 0), _text(text), _opacity(1), _checked(checked) {
connect(this, SIGNAL(clicked()), this, SLOT(onClicked()));
connect(this, SIGNAL(stateChanged(int, ButtonStateChangeSource)), this, SLOT(onStateChange(int, ButtonStateChangeSource)));
setCursor(_st.cursor);
int32 w = _st.width, h = _st.height;
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if (w <= 0) w = _st.textLeft + _st.font->m.width(_text) + 2;
if (h <= 0) h = qMax(_st.font->height, _st.imageRect.pxHeight());
resize(QSize(w, h));
}
bool FlatCheckbox::checked() const {
return _checked;
}
void FlatCheckbox::setChecked(bool checked) {
if (_checked != checked) {
_checked = checked;
emit changed();
update();
}
}
void FlatCheckbox::setOpacity(float64 o) {
_opacity = o;
update();
}
void FlatCheckbox::onClicked() {
if (_state & StateDisabled) return;
setChecked(!checked());
}
void FlatCheckbox::onStateChange(int oldState, ButtonStateChangeSource source) {
if ((_state & StateOver) && !(oldState & StateOver)) {
a_over.start(1);
anim::start(this);
} else if (!(_state & StateOver) && (oldState & StateOver)) {
a_over.start(0);
anim::start(this);
}
if ((_state & StateDisabled) && !(oldState & StateDisabled)) {
setCursor(_st.disabledCursor);
anim::start(this);
} else if (!(_state & StateDisabled) && (oldState & StateDisabled)) {
setCursor(_st.cursor);
anim::start(this);
}
}
void FlatCheckbox::paintEvent(QPaintEvent *e) {
QPainter p(this);
p.setOpacity(_opacity);
if (_st.bgColor != st::transparent) {
p.fillRect(rect(), _st.bgColor->b);
}
p.setFont(_st.font->f);
p.setRenderHint(QPainter::TextAntialiasing);
p.setPen((_state & StateDisabled ? _st.disColor : _st.textColor)->p);
QRect tRect(rect());
tRect.setTop(_st.textTop);
tRect.setLeft(_st.textLeft);
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// p.drawText(_st.textLeft, _st.textTop + _st.font->ascent, _text);
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p.drawText(tRect, _text, QTextOption(style::al_topleft));
if (_state & StateDisabled) {
QRect sRect(_checked ? _st.chkDisImageRect : _st.disImageRect);
p.drawPixmap(_st.imagePos, App::sprite(), sRect);
} else if ((_checked && _st.chkImageRect == _st.chkOverImageRect) || (!_checked && _st.imageRect == _st.overImageRect)) {
p.setOpacity(_opacity);
QRect sRect(_checked ? _st.chkImageRect : _st.imageRect);
p.drawPixmap(_st.imagePos, App::sprite(), sRect);
} else {
if (a_over.current() < 1) {
QRect sRect(_checked ? _st.chkImageRect : _st.imageRect);
p.drawPixmap(_st.imagePos, App::sprite(), sRect);
}
if (a_over.current() > 0) {
p.setOpacity(_opacity * a_over.current());
QRect sRect(_checked ? _st.chkOverImageRect : _st.overImageRect);
p.drawPixmap(_st.imagePos, App::sprite(), sRect);
}
}
}
bool FlatCheckbox::animStep(float64 ms) {
float64 dt = ms / _st.duration;
bool res = true;
if (dt >= 1) {
a_over.finish();
res = false;
} else {
a_over.update(dt, _st.bgFunc);
}
update();
return res;
}
class RadiobuttonsGroup : public QSet<FlatRadiobutton*> {
typedef QSet<FlatRadiobutton*> Parent;
public:
RadiobuttonsGroup(const QString &name) : _name(name), _val(0) {
}
void remove(FlatRadiobutton * const &radio);
int32 val() const {
return _val;
}
void setVal(int32 val) {
_val = val;
}
private:
QString _name;
int32 _val;
};
class Radiobuttons : public QMap<QString, RadiobuttonsGroup*> {
typedef QMap<QString, RadiobuttonsGroup*> Parent;
public:
RadiobuttonsGroup *reg(const QString &group) {
Parent::const_iterator i = constFind(group);
if (i == cend()) {
i = insert(group, new RadiobuttonsGroup(group));
}
return i.value();
}
int remove(const QString &group) {
Parent::iterator i = find(group);
if (i != cend()) {
delete i.value();
erase(i);
return 1;
}
return 0;
}
~Radiobuttons() {
for (Parent::const_iterator i = cbegin(), e = cend(); i != e; ++i) {
delete *i;
}
}
};
namespace {
Radiobuttons radioButtons;
}
void RadiobuttonsGroup::remove(FlatRadiobutton * const &radio) {
Parent::remove(radio);
if (isEmpty()) {
radioButtons.remove(_name);
}
}
FlatRadiobutton::FlatRadiobutton(QWidget *parent, const QString &group, int32 value, const QString &text, bool checked, const style::flatCheckbox &st) :
FlatCheckbox(parent, text, checked, st), _group(radioButtons.reg(group)), _value(value) {
_group->insert(this);
connect(this, SIGNAL(changed()), this, SLOT(onChanged()));
if (this->checked()) onChanged();
}
void FlatRadiobutton::onChanged() {
if (checked()) {
int32 uncheck = _group->val();
if (uncheck != _value) {
_group->setVal(_value);
for (RadiobuttonsGroup::const_iterator i = _group->cbegin(), e = _group->cend(); i != e; ++i) {
if ((*i)->val() == uncheck) {
(*i)->setChecked(false);
}
}
}
} else if (_group->val() == _value) {
setChecked(true);
}
}
FlatRadiobutton::~FlatRadiobutton() {
_group->remove(this);
}