Hack to make the subsurface work on Gnome3 shell

The Gtk+ style on the Gnome shell is somewhat broken on Qt for
some reason. This hack pokes the system, checks if it's running
gnome-shell, and if the current style is gtk+ ( I couldn't just
check for gtk+ since it worked on XFCE and other Gtk based enviro
ments. so a double check is needed. ) then I changed the Pallete
of the affected widgets by hand.
not a pretty hack but worked.

[Dirk Hohndel: redid the patch to be simpler and more consistent]

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-gui.cpp

@@ -93,11 +93,6 @@ void init_ui(int *argcp, char ***argvp)
 	// note: on Linux, "system" == "environment variables"
 	QNetworkProxyFactory::setUseSystemConfiguration(true);
 
-	// the Gtk theme makes things unbearably ugly
-	// so switch to Oxygen in this case
-	if (application->style()->objectName() == "gtk+")
-		application->setStyle("Oxygen");
-
 #if QT_VERSION < 0x050000
 	// ask QString in Qt 4 to interpret all char* as UTF-8,
 	// like Qt 5 does.

qt-ui/maintab.cpp

@@ -96,6 +96,17 @@ MainTab::MainTab(QWidget *parent) : QTabWidget(parent),
 
 	setMinimumHeight(0);
 	setMinimumWidth(0);
+
+	// Current display of things on Gnome3 looks like shit, so
+	// let`s fix that.
+	if (isGnome3Session()) {
+		QPalette p;
+		p.setColor(QPalette::Window, QColor(Qt::white));
+		ui->scrollArea->viewport()->setPalette(p);
+		ui->scrollArea_2->viewport()->setPalette(p);
+		ui->scrollArea_3->viewport()->setPalette(p);
+		ui->scrollArea_4->viewport()->setPalette(p);
+	}
 }
 
 void MainTab::addDiveStarted()

qt-ui/modeldelegates.cpp

@@ -4,6 +4,7 @@
 #include "starwidget.h"
 #include "models.h"
 #include "diveplanner.h"
+#include "simplewidgets.h"
 
 #include <QtDebug>
 #include <QPainter>
@@ -16,6 +17,7 @@
 #include <QKeyEvent>
 #include <QAbstractItemView>
 #include <QStringListModel>
+#include <QApplication>
 
 // Gets the index of the model in the currentRow and column.
 // currCombo is defined below.
@@ -100,6 +102,16 @@ QWidget* ComboBoxDelegate::createEditor(QWidget* parent, const QStyleOptionViewI
 	currCombo.comboEditor = comboDelegate;
 	currCombo.currRow = index.row();
 	currCombo.model = const_cast<QAbstractItemModel*>(index.model());
+
+	// Current display of things on Gnome3 looks like shit, so
+	// let`s fix that.
+	if (isGnome3Session()) {
+		QPalette p;
+		p.setColor(QPalette::Window, QColor(Qt::white));
+		p.setColor(QPalette::Base, QColor(Qt::white));
+		comboDelegate->lineEdit()->setPalette(p);
+		comboDelegate->setPalette(p);
+	}
 	return comboDelegate;
 }
 

qt-ui/simplewidgets.cpp

@@ -8,6 +8,9 @@
 #include <QSpinBox>
 #include <QButtonGroup>
 #include <QDebug>
+#include <QProcess>
+#include <QStringList>
+#include <QDebug>
 
 #include "../dive.h"
 
@@ -118,3 +121,18 @@ RenumberDialog::RenumberDialog(): QDialog(), ui( new Ui::RenumberDialog())
 	ui->setupUi(this);
 	connect(ui->buttonBox, SIGNAL(clicked(QAbstractButton*)), this, SLOT(buttonClicked(QAbstractButton*)));
 }
+
+bool isGnome3Session()
+{
+#if defined(QT_OS_WIW) || defined(QT_OS_MAC)
+	return false;
+#else
+	if (qApp->style()->objectName() != "gtk+")
+		return false;
+	QProcess p;
+	p.start("pidof", QStringList() << "gnome-shell" );
+	p.waitForFinished(-1);
+	QString p_stdout = p.readAllStandardOutput();
+	return !p_stdout.isEmpty();
+#endif
+}

qt-ui/simplewidgets.h

@@ -43,4 +43,6 @@ private:
 	Ui::RenumberDialog *ui;
 };
 
+bool isGnome3Session();
+
 #endif