tdesktop/Telegram/SourceFiles/ui/twidget.cpp

246 lines
6.8 KiB
C++

/*
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 "application.h"
#include "mainwindow.h"
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' after feeding '%3'.").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);
}
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."));
}
}
#endif // Q_OS_WIN
}
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;
}
} // Fonts
namespace Ui {
namespace {
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 (!cIsSnowLeopard()) {
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());
}
QPixmap GrabWidget(not_null<TWidget*> target, QRect rect, QColor bg) {
SendPendingMoveResizeEvents(target);
if (rect.isNull()) {
rect = target->rect();
}
auto result = QPixmap(rect.size() * cIntRetinaFactor());
result.setDevicePixelRatio(cRetinaFactor());
if (!target->testAttribute(Qt::WA_OpaquePaintEvent)) {
result.fill(bg);
}
target->grabStart();
target->render(
&result,
QPoint(0, 0),
rect,
QWidget::DrawChildren | QWidget::IgnoreMask);
target->grabFinish();
return result;
}
QImage GrabWidgetToImage(not_null<TWidget*> target, QRect rect, QColor bg) {
Ui::SendPendingMoveResizeEvents(target);
if (rect.isNull()) {
rect = target->rect();
}
auto result = QImage(
rect.size() * cIntRetinaFactor(),
QImage::Format_ARGB32_Premultiplied);
result.setDevicePixelRatio(cRetinaFactor());
if (!target->testAttribute(Qt::WA_OpaquePaintEvent)) {
result.fill(bg);
}
target->grabStart();
target->render(
&result,
QPoint(0, 0),
rect,
QWidget::DrawChildren | QWidget::IgnoreMask);
target->grabFinish();
return result;
}
} // 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);
QMouseEvent ev(type
, localPoint
, localPoint
, globalPoint
, button
, QGuiApplication::mouseButtons() | button
, QGuiApplication::keyboardModifiers()
#ifndef OS_MAC_OLD
, Qt::MouseEventSynthesizedByApplication
#endif // OS_MAC_OLD
);
ev.setTimestamp(getms());
QGuiApplication::sendEvent(windowHandle, &ev);
}
}