105 lines
4.2 KiB
C++
105 lines
4.2 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram 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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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#include "stdafx.h"
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#include "ui/widgets/shadow.h"
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namespace Ui {
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void Shadow::paint(Painter &p, const QRect &box, int outerWidth, const style::Shadow &st, Sides sides) {
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auto left = (sides & Side::Left);
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auto top = (sides & Side::Top);
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auto right = (sides & Side::Right);
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auto bottom = (sides & Side::Bottom);
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if (left) {
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auto from = box.y();
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auto to = from + box.height();
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if (top && !st.topLeft.empty()) {
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st.topLeft.paint(p, box.x() - st.extend.left(), box.y() - st.extend.top(), outerWidth);
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from += st.topLeft.height() - st.extend.top();
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}
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if (bottom && !st.bottomLeft.empty()) {
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st.bottomLeft.paint(p, box.x() - st.extend.left(), box.y() + box.height() + st.extend.bottom() - st.bottomLeft.height(), outerWidth);
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to -= st.bottomLeft.height() - st.extend.bottom();
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}
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if (to > from && !st.left.empty()) {
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st.left.fill(p, rtlrect(box.x() - st.extend.left(), from, st.left.width(), to - from, outerWidth));
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}
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}
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if (right) {
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auto from = box.y();
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auto to = from + box.height();
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if (top && !st.topRight.empty()) {
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st.topRight.paint(p, box.x() + box.width() + st.extend.right() - st.topRight.width(), box.y() - st.extend.top(), outerWidth);
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from += st.topRight.height() - st.extend.top();
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}
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if (bottom && !st.bottomRight.empty()) {
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st.bottomRight.paint(p, box.x() + box.width() + st.extend.right() - st.bottomRight.width(), box.y() + box.height() + st.extend.bottom() - st.bottomRight.height(), outerWidth);
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to -= st.bottomRight.height() - st.extend.bottom();
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}
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if (to > from && !st.right.empty()) {
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st.right.fill(p, rtlrect(box.x() + box.width() + st.extend.right() - st.right.width(), from, st.right.width(), to - from, outerWidth));
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}
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}
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if (top && !st.top.empty()) {
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auto from = box.x();
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auto to = from + box.width();
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if (left && !st.topLeft.empty()) from += st.topLeft.width() - st.extend.left();
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if (right && !st.topRight.empty()) to -= st.topRight.width() - st.extend.right();
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if (to > from) {
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st.top.fill(p, rtlrect(from, box.y() - st.extend.top(), to - from, st.top.height(), outerWidth));
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}
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}
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if (bottom && !st.bottom.empty()) {
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auto from = box.x();
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auto to = from + box.width();
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if (left && !st.bottomLeft.empty()) from += st.bottomLeft.width() - st.extend.left();
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if (right && !st.bottomRight.empty()) to -= st.bottomRight.width() - st.extend.right();
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if (to > from) {
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st.bottom.fill(p, rtlrect(from, box.y() + box.height() + st.extend.bottom() - st.bottom.height(), to - from, st.bottom.height(), outerWidth));
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}
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}
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}
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QPixmap Shadow::grab(TWidget *target, const style::Shadow &shadow, Sides sides) {
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myEnsureResized(target);
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auto rect = target->rect();
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auto extend = QMargins(
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(sides & Side::Left) ? shadow.extend.left() : 0,
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(sides & Side::Top) ? shadow.extend.top() : 0,
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(sides & Side::Right) ? shadow.extend.right() : 0,
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(sides & Side::Bottom) ? shadow.extend.bottom() : 0
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);
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auto full = QRect(0, 0, extend.left() + rect.width() + extend.right(), extend.top() + rect.height() + extend.bottom());
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auto result = QPixmap(full.size() * cIntRetinaFactor());
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result.setDevicePixelRatio(cRetinaFactor());
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result.fill(Qt::transparent);
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{
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Painter p(&result);
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Ui::Shadow::paint(p, full.marginsRemoved(extend), full.width(), shadow);
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target->grabStart();
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target->render(&p, QPoint(extend.left(), extend.top()), rect, QWidget::DrawChildren | QWidget::IgnoreMask);
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target->grabFinish();
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}
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return result;
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}
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} // namespace Ui
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