rstudio/src/cpp/desktop/DesktopUtils.cpp at master · pearsonca/rstudio · GitHub

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* DesktopUtils.cpp

* Unless you have received this program directly from RStudio pursuant

* to the terms of a commercial license agreement with RStudio, then

* this program is licensed to you under the terms of version 3 of the

* GNU Affero General Public License. This program is distributed WITHOUT

* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,

* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the

* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.

#include "DesktopUtils.hpp"

#include <set>

#include <QPushButton>

#include <QTimer>

#include <QDesktopServices>

#include <core/FileSerializer.hpp>

#include <core/system/Environment.hpp>

#include <core/system/Xdg.hpp>

#include "DesktopOptions.hpp"

#include "DesktopMainWindow.hpp"

#ifdef Q_OS_WIN

#include <windows.h>

#endif

using namespace rstudio::core;

namespace rstudio {

namespace desktop {

#ifdef Q_OS_WIN

void reattachConsoleIfNecessary()

{

if (::AttachConsole(ATTACH_PARENT_PROCESS))

{

freopen("CONOUT$","wb",stdout);

freopen("CONOUT$","wb",stderr);

freopen("CONIN$","rb",stdin);

std::ios::sync_with_stdio();

}

#else

void reattachConsoleIfNecessary()

{

}

#endif

// NOTE: this code is duplicated in diagnostics as well (and also in

// SessionOptions.hpp although the code path isn't exactly the same)

FilePath userLogPath()

{

FilePath userHomePath = core::system::userHomePath("R_USER|HOME");

FilePath logPath = core::system::userSettingsPath(

userHomePath,

"RStudio-Desktop").completeChildPath("log");

return logPath;

}

FilePath userWebCachePath()

{

return core::system::xdg::userDataDir().completeChildPath("web-cache");

}

bool isWindows()

{

#ifdef Q_OS_WIN

return true;

#else

return false;

#endif

}

#ifndef Q_OS_MAC

double devicePixelRatio(QMainWindow* pMainWindow)

{

return 1.0;

}

bool isMacOS()

{

return false;

}

// NOTE: also RHEL

bool isCentOS()

{

FilePath redhatRelease("/etc/redhat-release");

if (!redhatRelease.exists())

return false;

std::string contents;

Error error = readStringFromFile(redhatRelease, &contents);

if (error)

return false;

return contents.find("CentOS") != std::string::npos ||

contents.find("Red Hat Enterprise Linux") != std::string::npos;

}

QString browseDirectory(const QString& caption,

const QString& label,

const QString& dir,

QWidget* pOwner)

{

QFileDialog dialog(

pOwner,

caption,

resolveAliasedPath(dir));

dialog.setLabelText(QFileDialog::Accept, label);

dialog.setFileMode(QFileDialog::Directory);

dialog.setOption(QFileDialog::ShowDirsOnly, true);

dialog.setWindowModality(Qt::WindowModal);

QString result;

if (dialog.exec() == QDialog::Accepted)

result = dialog.selectedFiles().value(0);

if (pOwner)

raiseAndActivateWindow(pOwner);

return createAliasedPath(result);

}

#endif

bool isGnomeDesktop()

{

if (core::system::getenv("DESKTOP_SESSION") == "gnome")

return true;

std::string desktop = core::system::getenv("XDG_CURRENT_DESKTOP");

if (desktop.find("GNOME") != std::string::npos)

return true;

return false;

}

#ifndef Q_OS_MAC

QString getFixedWidthFontList()

{

return desktopInfo().getFixedWidthFontList();

}

#endif

void applyDesktopTheme(QWidget* window, bool isDark)

{

#ifndef Q_OS_MAC

std::string lightSheetName = isWindows()

? "rstudio-windows-light.qss"

: "rstudio-gnome-light.qss";

std::string darkSheetName = isWindows()

? "rstudio-windows-dark.qss"

: "rstudio-gnome-dark.qss";

FilePath stylePath = isDark

? options().resourcesPath().completePath("stylesheets").completePath(darkSheetName)

: options().resourcesPath().completePath("stylesheets").completePath(lightSheetName);

std::string stylesheet;

Error error = core::readStringFromFile(stylePath, &stylesheet);

if (error)

LOG_ERROR(error);

window->setStyleSheet(QString::fromStdString(stylesheet));

#endif

}

#ifndef Q_OS_MAC

void enableFullscreenMode(QMainWindow* pMainWindow, bool primary)

{

}

void toggleFullscreenMode(QMainWindow* pMainWindow)

{

}

bool supportsFullscreenMode(QMainWindow* pMainWindow)

{

return false;

}

void initializeLang()

{

}

void finalPlatformInitialize(MainWindow* pMainWindow)

{

}

#endif

void raiseAndActivateWindow(QWidget* pWindow)

{

// WId wid = pWindow->effectiveWinId(); -- gets X11 window id

// gtk_window_present_with_time(GTK_WINDOW, timestamp)

if (pWindow->isMinimized())

{

pWindow->setWindowState(

pWindow->windowState() & ~Qt::WindowMinimized);

}

pWindow->raise();

pWindow->activateWindow();

}

void moveWindowBeneath(QWidget* pTop, QWidget* pBottom)

{

#ifdef WIN32

HWND hwndTop = reinterpret_cast<HWND>(pTop->winId());

HWND hwndBottom = reinterpret_cast<HWND>(pBottom->winId());

::SetWindowPos(hwndBottom, hwndTop, 0, 0, 0, 0,

SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);

#endif

// not currently supported on Linux--Qt doesn't provide a way to view or

// change the window stacking order

}

void closeWindow(QWidget* pWindow)

{

pWindow->close();

}

QMessageBox::Icon safeMessageBoxIcon(QMessageBox::Icon icon)

{

// if a gtk theme has a missing or corrupt icon for one of the stock

// dialog images, qt crashes when attempting to show the dialog

#ifdef Q_OS_LINUX

return QMessageBox::NoIcon;

#else

return icon;

#endif

}

bool showYesNoDialog(QMessageBox::Icon icon,

QWidget *parent,

const QString &title,

const QString& text,

const QString& informativeText,

bool yesDefault)

{

// basic message box attributes

QMessageBox messageBox(parent);

messageBox.setIcon(safeMessageBoxIcon(icon));

messageBox.setWindowTitle(title);

messageBox.setText(text);

if (informativeText.length() > 0)

messageBox.setInformativeText(informativeText);

messageBox.setWindowModality(Qt::WindowModal);

messageBox.setWindowFlag(Qt::WindowContextHelpButtonHint, false);

// initialize buttons

QPushButton* pYes = messageBox.addButton(QMessageBox::Yes);

QPushButton* pNo = messageBox.addButton(QMessageBox::No);

if (yesDefault)

messageBox.setDefaultButton(pYes);

else

messageBox.setDefaultButton(pNo);

// show the dialog modally

messageBox.exec();

// return true if the user clicked yes

return messageBox.clickedButton() == pYes;

}

void showMessageBox(QMessageBox::Icon icon,

QWidget *parent,

const QString &title,

const QString& text,

const QString& informativeText)

{

QMessageBox messageBox(parent);

messageBox.setIcon(safeMessageBoxIcon(icon));

messageBox.setWindowTitle(title);

messageBox.setText(text);

if (informativeText.length() > 0)

messageBox.setInformativeText(informativeText);

messageBox.setWindowModality(Qt::WindowModal);

messageBox.setWindowFlag(Qt::WindowContextHelpButtonHint, false);

messageBox.addButton(new QPushButton(QString::fromUtf8("OK")), QMessageBox::AcceptRole);

messageBox.exec();

}

void showError(QWidget *parent,

const QString &title,

const QString& text,

const QString& informativeText)

{

showMessageBox(QMessageBox::Critical, parent, title, text, informativeText);

}

void showWarning(QWidget *parent,

const QString &title,

const QString& text,

const QString& informativeText)

{

showMessageBox(QMessageBox::Warning, parent, title, text, informativeText);

}

void showInfo(QWidget* parent,

const QString& title,

const QString& text,

const QString& informativeText)

{

showMessageBox(QMessageBox::Information, parent, title, text, informativeText);

}

void showFileError(const QString& action,

const QString& file,

const QString& error)

{

QString msg = QString::fromUtf8("Error ") + action +

QString::fromUtf8(" ") + file +

QString::fromUtf8(" - ") + error;

showMessageBox(QMessageBox::Critical,

nullptr,

QString::fromUtf8("File Error"),

msg,

QString());

}

bool isFixedWidthFont(const QFont& font)

{

QFontMetrics metrics(font);

int width = metrics.width(QChar::fromLatin1(' '));

char chars[] = {'m', 'i', 'A', '/', '-', '1', 'l', '!', 'x', 'X', 'y', 'Y'};

for (char i : chars)

{

if (metrics.width(QChar::fromLatin1(i)) != width)

return false;

}

return true;

}

int getDpi()

{

// TODO: we may need to tweak this to ensure that the DPI

// discovered respects the screen a particular instance

// that RStudio lives on (e.g. for users with multiple

// displays with different DPIs)

return (int) qApp->primaryScreen()->logicalDotsPerInch();

}

double getDpiZoomScaling()

{

// TODO: because Qt is already high-DPI aware and automatically

// scales in most scenarios, we no longer need to detect and

// apply a custom scale -- but more testing is warranted

return 1.0;

}

#ifdef _WIN32

void openFile(const QString& file)

{

return openUrl(QUrl::fromLocalFile(file));

}

// on Win32 open urls using our special urlopener.exe -- this is

// so that the shell exec is made out from under our windows "job"

void openUrl(const QUrl& url)

{

// we allow default handling for mailto and file schemes because qt

// does custom handling for them and they aren't affected by the chrome

//job object issue noted above

if (url.scheme() == QString::fromUtf8("mailto") ||

url.scheme() == QString::fromUtf8("file"))

{

QDesktopServices::openUrl(url);

}

else

{

core::system::ProcessOptions options;

options.breakawayFromJob = true;

options.detachProcess = true;

std::vector<std::string> args;

args.push_back(url.toString().toStdString());

core::system::ProcessResult result;

Error error = core::system::runProgram(

desktop::options().urlopenerPath().getAbsolutePath(),

args,

"",

options,

&result);

if (error)

LOG_ERROR(error);

else if (result.exitStatus != EXIT_SUCCESS)

LOG_ERROR_MESSAGE(result.stdErr);

}

// Qt 4.8.3 on Win7 (32-bit) has problems with opening the ~ directory

// (it attempts to navigate to the "Documents library" and then hangs)

// So we use the Qt file dialog implementations when we are running

// on Win32

QFileDialog::Options standardFileDialogOptions()

{

return 0;

}

#else

void openFile(const QString& file)

{

QDesktopServices::openUrl(QUrl::fromLocalFile(file));

}

void openUrl(const QUrl& url)

{

QDesktopServices::openUrl(url);

}

QFileDialog::Options standardFileDialogOptions()

{

return nullptr;

}

#endif

FilePath userHomePath()

{

return core::system::userHomePath("R_USER|HOME");

}

QString createAliasedPath(const QString& path)

{

std::string aliased = FilePath::createAliasedPath(

FilePath(path.toUtf8().constData()), desktop::userHomePath());

return QString::fromUtf8(aliased.c_str());

}

QString resolveAliasedPath(const QString& path)

{

FilePath resolved(FilePath::resolveAliasedPath(path.toUtf8().constData(),

userHomePath()));

return QString::fromUtf8(resolved.getAbsolutePath().c_str());

}

} // namespace desktop

} // namespace rstudio

rstudio/src/cpp/desktop/DesktopUtils.cpp at master · pearsonca/rstudio · GitHub

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