mirror of
https://github.com/kotatogram/kotatogram-desktop
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initial commit for 0.4.18 version of Telegram Desktop
This commit is contained in:
John Preston
204
Telegram/SourceFiles/gui/flatbutton.cpp
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204
Telegram/SourceFiles/gui/flatbutton.cpp
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/*
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This file is part of Telegram Desktop,
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an unofficial desktop messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014 John Preston, https://tdesktop.com
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*/
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#include "stdafx.h"
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#include "gui/flatbutton.h"
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FlatButton::FlatButton(QWidget *parent, const QString &text, const style::flatButton &st) : Button(parent),
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_text(text), _opacity(1),
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_st(st),
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a_bg(st.bgColor->c), a_text(st.color->c) {
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if (_st.width < 0) {
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_st.width = _st.font->m.width(text) - _st.width;
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} else if (!_st.width) {
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_st.width = _st.font->m.width(text) + _st.height - _st.font->height;
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}
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connect(this, SIGNAL(stateChanged(int, ButtonStateChangeSource)), this, SLOT(onStateChange(int, ButtonStateChangeSource)));
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resize(_st.width, _st.height);
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setCursor(_st.cursor);
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}
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void FlatButton::setOpacity(float64 o) {
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_opacity = o;
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update();
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}
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void FlatButton::setText(const QString &text) {
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_text = text;
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update();
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}
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void FlatButton::setWidth(int32 w) {
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_st.width = w;
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resize(_st.width, height());
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}
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bool FlatButton::animStep(float64 ms) {
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float64 dt = ms / _st.duration;
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bool res = true;
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if (dt >= 1) {
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a_bg.finish();
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a_text.finish();
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res = false;
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} else {
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a_bg.update(dt, anim::linear);
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a_text.update(dt, anim::linear);
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}
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update();
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return res;
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}
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void FlatButton::onStateChange(int oldState, ButtonStateChangeSource source) {
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style::color bgColorTo = (_state & StateOver) ? ((_state & StateDown) ? _st.downBgColor : _st.overBgColor) : _st.bgColor;
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style::color colorTo = (_state & StateOver) ? ((_state & StateDown) ? _st.downColor : _st.overColor) : _st.color;
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a_bg.start(bgColorTo->c);
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a_text.start(colorTo->c);
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if (source == ButtonByUser || source == ButtonByPress) {
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anim::stop(this);
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a_bg.finish();
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a_text.finish();
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update();
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} else {
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anim::start(this);
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}
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}
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void FlatButton::paintEvent(QPaintEvent *e) {
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QPainter p(this);
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QRect r(0, height() - _st.height, width(), _st.height);
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p.setOpacity(_opacity);
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p.fillRect(r, a_bg.current());
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p.setFont(((_state & StateOver) ? _st.overFont : _st.font)->f);
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p.setRenderHint(QPainter::TextAntialiasing);
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p.setPen(a_text.current());
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r.setTop((_state & StateOver) ? ((_state & StateDown) ? _st.downTextTop : _st.overTextTop) : _st.textTop);
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p.drawText(r, _text, QTextOption(Qt::AlignHCenter));
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}
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BottomButton::BottomButton(QWidget *w, const QString &t, const style::flatButton &s) : FlatButton(w, t, s) {
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resize(width(), height() + 1);
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}
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void BottomButton::paintEvent(QPaintEvent *e) {
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QPainter p(this);
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p.setPen(st::scrollDef.shColor->p);
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p.drawLine(0, 0, width(), 0);
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FlatButton::paintEvent(e);
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}
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LinkButton::LinkButton(QWidget *parent, const QString &text, const style::linkButton &st) : Button(parent), _text(text), _st(st) {
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connect(this, SIGNAL(stateChanged(int, ButtonStateChangeSource)), this, SLOT(onStateChange(int, ButtonStateChangeSource)));
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resize(_st.font->m.width(_text), _st.font->height);
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setCursor(style::cur_pointer);
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}
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void LinkButton::paintEvent(QPaintEvent *e) {
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QPainter p(this);
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p.setFont(((_state & StateOver) ? _st.overFont : _st.font)->f);
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p.setPen(((_state & StateDown) ? _st.downColor : ((_state & StateOver) ? _st.overColor : _st.color))->p);
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p.drawText(0, ((_state & StateOver) ? _st.overFont : _st.font)->ascent, _text);
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}
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void LinkButton::setText(const QString &text) {
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_text = text;
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resize(_st.font->m.width(_text), _st.font->height);
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update();
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}
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void LinkButton::onStateChange(int oldState, ButtonStateChangeSource source) {
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update();
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}
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LinkButton::~LinkButton() {
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}
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IconedButton::IconedButton(QWidget *parent, const style::iconedButton &st, const QString &text) : Button(parent), _opacity(1),
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_text(text), _st(st), a_opacity(_st.opacity), a_bg(_st.bgColor->c) {
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if (_st.width < 0) {
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_st.width = _st.font->m.width(text) - _st.width;
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} else if (!_st.width) {
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_st.width = _st.font->m.width(text) + _st.height - _st.font->height;
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}
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connect(this, SIGNAL(stateChanged(int, ButtonStateChangeSource)), this, SLOT(onStateChange(int, ButtonStateChangeSource)));
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resize(_st.width, _st.height);
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setCursor(_st.cursor);
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}
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void IconedButton::setOpacity(float64 opacity) {
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_opacity = opacity;
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update();
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}
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bool IconedButton::animStep(float64 ms) {
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float64 dt = ms / _st.duration;
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bool res = true;
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if (dt >= 1) {
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a_opacity.finish();
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a_bg.finish();
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res = false;
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} else {
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a_opacity.update(dt, anim::linear);
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a_bg.update(dt, anim::linear);
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}
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update();
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return res;
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}
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void IconedButton::onStateChange(int oldState, ButtonStateChangeSource source) {
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a_opacity.start((_state & (StateOver | StateDown)) ? _st.overOpacity : _st.opacity);
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a_bg.start(((_state & (StateOver | StateDown)) ? _st.overBgColor : _st.bgColor)->c);
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if (source == ButtonByUser || source == ButtonByPress) {
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anim::stop(this);
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a_opacity.finish();
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a_bg.finish();
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update();
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} else {
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anim::start(this);
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}
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}
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void IconedButton::paintEvent(QPaintEvent *e) {
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QPainter p(this);
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p.setOpacity(_opacity);
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p.fillRect(e->rect(), a_bg.current());
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p.setOpacity(a_opacity.current() * _opacity);
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if (!_text.isEmpty()) {
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p.setFont(_st.font->f);
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p.setRenderHint(QPainter::TextAntialiasing);
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p.setPen(_st.color->p);
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const QPoint &t((_state & StateDown) ? _st.downTextPos : _st.textPos);
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p.drawText(t.x(), t.y() + _st.font->ascent, _text);
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}
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const QRect &i((_state & StateDown) ? _st.downIcon : _st.icon);
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if (i.width()) {
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const QPoint &t((_state & StateDown) ? _st.downIconPos : _st.iconPos);
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p.drawPixmap(t, App::sprite(), i);
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}
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}
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