tdesktop/Telegram/SourceFiles/ui/twidget.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "twidget.h"
#include "mainwindow.h"
#include "core/application.h"
#include "platform/platform_info.h"
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namespace Fonts {
namespace {
bool ValidateFont(const QString &familyName, int flags = 0) {
QFont checkFont(familyName);
checkFont.setPixelSize(13);
checkFont.setBold(flags & style::internal::FontBold);
checkFont.setItalic(flags & style::internal::FontItalic);
checkFont.setUnderline(flags & style::internal::FontUnderline);
checkFont.setStyleStrategy(QFont::PreferQuality);
auto realFamily = QFontInfo(checkFont).family();
if (realFamily.trimmed().compare(familyName, Qt::CaseInsensitive)) {
LOG(("Font Error: could not resolve '%1' font, got '%2'.").arg(familyName).arg(realFamily));
return false;
}
auto metrics = QFontMetrics(checkFont);
if (!metrics.height()) {
LOG(("Font Error: got a zero height in '%1'.").arg(familyName));
return false;
}
return true;
}
bool LoadCustomFont(const QString &filePath, const QString &familyName, int flags = 0) {
auto regularId = QFontDatabase::addApplicationFont(filePath);
if (regularId < 0) {
LOG(("Font Error: could not add '%1'.").arg(filePath));
return false;
}
auto found = [&familyName, regularId] {
for (auto &family : QFontDatabase::applicationFontFamilies(regularId)) {
if (!family.trimmed().compare(familyName, Qt::CaseInsensitive)) {
return true;
}
}
return false;
};
if (!found()) {
LOG(("Font Error: could not locate '%1' font in '%2'.").arg(familyName).arg(filePath));
return false;
}
return ValidateFont(familyName, flags);
}
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bool Started = false;
QString OpenSansOverride;
QString OpenSansSemiboldOverride;
} // namespace
void Start() {
if (Started) {
return;
}
Started = true;
auto regular = LoadCustomFont(qsl(":/gui/fonts/OpenSans-Regular.ttf"), qsl("Open Sans"));
auto bold = LoadCustomFont(qsl(":/gui/fonts/OpenSans-Bold.ttf"), qsl("Open Sans"), style::internal::FontBold);
auto semibold = LoadCustomFont(qsl(":/gui/fonts/OpenSans-Semibold.ttf"), qsl("Open Sans Semibold"));
#ifdef Q_OS_WIN
// Attempt to workaround a strange font bug with Open Sans Semibold not loading.
// See https://github.com/telegramdesktop/tdesktop/issues/3276 for details.
// Crash happens on "options.maxh / _t->_st->font->height" with "division by zero".
// In that place "_t->_st->font" is "semiboldFont" is "font(13 "Open Sans Semibold").
if (!regular || !bold) {
if (ValidateFont(qsl("Segoe UI")) && ValidateFont(qsl("Segoe UI"), style::internal::FontBold)) {
OpenSansOverride = qsl("Segoe UI");
LOG(("Fonts Info: Using Segoe UI instead of Open Sans."));
}
}
if (!semibold) {
if (ValidateFont(qsl("Segoe UI Semibold"))) {
OpenSansSemiboldOverride = qsl("Segoe UI Semibold");
LOG(("Fonts Info: Using Segoe UI Semibold instead of Open Sans Semibold."));
}
}
// Disable default fallbacks to Segoe UI, see:
// https://github.com/telegramdesktop/tdesktop/issues/5368
//
//QFont::insertSubstitution(qsl("Open Sans"), qsl("Segoe UI"));
//QFont::insertSubstitution(qsl("Open Sans Semibold"), qsl("Segoe UI Semibold"));
#elif defined Q_OS_MAC // Q_OS_WIN
auto list = QStringList();
list.append(qsl(".SF NS Text"));
list.append(qsl("Helvetica Neue"));
list.append(qsl("Lucida Grande"));
QFont::insertSubstitutions(qsl("Open Sans"), list);
QFont::insertSubstitutions(qsl("Open Sans Semibold"), list);
#endif // Q_OS_WIN || Q_OS_MAC
}
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QString GetOverride(const QString &familyName) {
if (familyName == qstr("Open Sans")) {
return OpenSansOverride.isEmpty() ? familyName : OpenSansOverride;
} else if (familyName == qstr("Open Sans Semibold")) {
return OpenSansSemiboldOverride.isEmpty() ? familyName : OpenSansSemiboldOverride;
}
return familyName;
}
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} // Fonts
namespace Ui {
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namespace {
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class WidgetCreator : public QWidget {
public:
static void Create(not_null<QWidget*> widget) {
volatile auto unknown = widget.get();
static_cast<WidgetCreator*>(unknown)->create();
}
};
void CreateWidgetStateRecursive(not_null<QWidget*> target) {
if (!target->testAttribute(Qt::WA_WState_Created)) {
if (!target->isWindow()) {
CreateWidgetStateRecursive(target->parentWidget());
WidgetCreator::Create(target);
} else if (!Platform::IsMac() || Platform::IsMac10_7OrGreater()) {
WidgetCreator::Create(target);
}
}
}
void SendPendingEventsRecursive(QWidget *target, bool parentHiddenFlag) {
auto wasVisible = target->isVisible();
if (!wasVisible) {
target->setAttribute(Qt::WA_WState_Visible, true);
}
if (target->testAttribute(Qt::WA_PendingMoveEvent)) {
target->setAttribute(Qt::WA_PendingMoveEvent, false);
QMoveEvent e(target->pos(), QPoint());
QApplication::sendEvent(target, &e);
}
if (target->testAttribute(Qt::WA_PendingResizeEvent)) {
target->setAttribute(Qt::WA_PendingResizeEvent, false);
QResizeEvent e(target->size(), QSize());
QApplication::sendEvent(target, &e);
}
auto removeVisibleFlag = [&] {
return parentHiddenFlag
|| target->testAttribute(Qt::WA_WState_Hidden);
};
auto &children = target->children();
for (auto i = 0; i < children.size(); ++i) {
auto child = children[i];
if (child->isWidgetType()) {
auto widget = static_cast<QWidget*>(child);
if (!widget->isWindow()) {
if (!widget->testAttribute(Qt::WA_WState_Created)) {
WidgetCreator::Create(widget);
}
SendPendingEventsRecursive(widget, removeVisibleFlag());
}
}
}
if (removeVisibleFlag()) {
target->setAttribute(Qt::WA_WState_Visible, false);
}
}
} // namespace
void SendPendingMoveResizeEvents(not_null<QWidget*> target) {
CreateWidgetStateRecursive(target);
SendPendingEventsRecursive(target, !target->isVisible());
}
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void MarkDirtyOpaqueChildrenRecursive(not_null<QWidget*> target) {
target->resize(target->size()); // Calls setDirtyOpaqueRegion().
for (const auto child : target->children()) {
if (const auto widget = qobject_cast<QWidget*>(child)) {
MarkDirtyOpaqueChildrenRecursive(widget);
}
}
}
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QPixmap GrabWidget(not_null<QWidget*> target, QRect rect, QColor bg) {
SendPendingMoveResizeEvents(target);
if (rect.isNull()) {
rect = target->rect();
}
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auto result = QPixmap(rect.size() * cIntRetinaFactor());
result.setDevicePixelRatio(cRetinaFactor());
if (!target->testAttribute(Qt::WA_OpaquePaintEvent)) {
result.fill(bg);
}
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{
QPainter p(&result);
RenderWidget(p, target, QPoint(), rect);
}
return result;
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}
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QImage GrabWidgetToImage(not_null<QWidget*> target, QRect rect, QColor bg) {
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SendPendingMoveResizeEvents(target);
if (rect.isNull()) {
rect = target->rect();
}
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auto result = QImage(
rect.size() * cIntRetinaFactor(),
QImage::Format_ARGB32_Premultiplied);
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result.setDevicePixelRatio(cRetinaFactor());
if (!target->testAttribute(Qt::WA_OpaquePaintEvent)) {
result.fill(bg);
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}
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{
QPainter p(&result);
RenderWidget(p, target, QPoint(), rect);
}
return result;
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}
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void RenderWidget(
QPainter &painter,
not_null<QWidget*> source,
const QPoint &targetOffset,
const QRegion &sourceRegion,
QWidget::RenderFlags renderFlags) {
const auto visible = source->isVisible();
source->render(&painter, targetOffset, sourceRegion, renderFlags);
if (!visible) {
MarkDirtyOpaqueChildrenRecursive(source);
}
}
void ForceFullRepaint(not_null<QWidget*> widget) {
const auto refresher = std::make_unique<QWidget>(widget);
refresher->setGeometry(widget->rect());
refresher->show();
}
void PostponeCall(FnMut<void()> &&callable) {
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Core::App().postponeCall(std::move(callable));
}
} // namespace Ui
void sendSynteticMouseEvent(QWidget *widget, QEvent::Type type, Qt::MouseButton button, const QPoint &globalPoint) {
if (auto windowHandle = widget->window()->windowHandle()) {
auto localPoint = windowHandle->mapFromGlobal(globalPoint);
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QMouseEvent ev(type
, localPoint
, localPoint
, globalPoint
, button
, QGuiApplication::mouseButtons() | button
, QGuiApplication::keyboardModifiers()
#ifndef OS_MAC_OLD
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, Qt::MouseEventSynthesizedByApplication
#endif // OS_MAC_OLD
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);
ev.setTimestamp(crl::now());
QGuiApplication::sendEvent(windowHandle, &ev);
}
}