[Qt] fix experimental build warning layout and smoothen gamelist scrolling (#3532)

* Qt: fix layout of "experimental build warning" for dpi scaling

and remove compiler warning in welcome_dialog.ui

* Qt: smoothen gamelist/-grid scrolling by setting singlestep value

and fix missing scroll and deselect on gamegrid

* Qt: show all bootable categories in gamegrid

rpcs3/rpcs3qt/game_list.h

@@ -12,7 +12,7 @@ class game_list : public QTableWidget
 private:
 	void mousePressEvent(QMouseEvent *event)
 	{
-		if (!indexAt(event->pos()).isValid())
+		if (!indexAt(event->pos()).isValid() || itemAt(event->pos())->data(Qt::UserRole) < 0)
 		{
 			clearSelection();
 		}

rpcs3/rpcs3qt/game_list_frame.cpp

@@ -153,6 +153,9 @@ game_list_frame::game_list_frame(std::shared_ptr<gui_settings> settings, const R
 	m_gameList->setSelectionBehavior(QAbstractItemView::SelectRows);
 	m_gameList->setSelectionMode(QAbstractItemView::SingleSelection);
 	m_gameList->setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
+	m_gameList->setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);
+	m_gameList->verticalScrollBar()->setSingleStep(20);
+	m_gameList->horizontalScrollBar()->setSingleStep(20);
 	m_gameList->verticalHeader()->setSectionResizeMode(QHeaderView::Fixed);	
 	m_gameList->verticalHeader()->setMinimumSectionSize(m_Icon_Size.height());
 	m_gameList->verticalHeader()->setMaximumSectionSize(m_Icon_Size.height());
@@ -951,7 +954,7 @@ void game_list_frame::resizeEvent(QResizeEvent *event)
 {
 	if (!m_isListLayout)
 	{
-		Refresh();
+		Refresh(false, m_xgrid->selectedItems().count());
 	}
 	QDockWidget::resizeEvent(event);
 }
@@ -1079,10 +1082,7 @@ void game_list_frame::PopulateGameGrid(uint maxCols, const QSize& image_size, co
 		{
 			continue;
 		}
-
-		QString category = qstr(m_game_data[i].info.category);
-
-		if (category == category::hdd_Game || category == category::disc_Game)
+		if (category::CategoryInMap(m_game_data[i].info.category, category::cat_boot))
 		{
 			QString title = GUI::get_Single_Line(qstr(m_game_data[i].info.name));
 

rpcs3/rpcs3qt/game_list_frame.h

@@ -100,6 +100,16 @@ namespace category // (see PARAM.SFO in psdevwiki.com) TODO: Disc Categories
 	const QStringList media = { app_Photo, app_Video, bc_Video, app_Music, app_TV, web_TV };
 	const QStringList data = { ps3_Data, ps2_Data, ps3_Save, psp_Save };
 	const QStringList others = { network, store_FE, trophy, other };
+
+	inline bool CategoryInMap(const std::string& cat, const q_from_char& map)
+	{
+		auto map_contains_category = [cat](std::pair<std::string, const QString> p)
+		{
+			return p.second == qstr(cat);
+		};
+
+		return std::find_if(map.begin(), map.end(), map_contains_category) != map.end();
+	}
 }
 
 namespace parental

rpcs3/rpcs3qt/game_list_grid.cpp

@@ -4,6 +4,7 @@
 
 #include <QHeaderView>
 #include <QLabel>
+#include <QScrollBar>
 
 game_list_grid::game_list_grid(const QSize& icon_size, const QColor& icon_color, const qreal& margin_factor, const qreal& text_factor, const bool& showText)
 	: game_list(), m_icon_size(icon_size), m_icon_color(icon_color), m_margin_factor(margin_factor), m_text_factor(text_factor), m_text_enabled(showText)
@@ -28,6 +29,8 @@ game_list_grid::game_list_grid(const QSize& icon_size, const QColor& icon_color,
 	setSelectionMode(QAbstractItemView::SingleSelection);
 	setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
 	setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);
+	verticalScrollBar()->setSingleStep(20);
+	horizontalScrollBar()->setSingleStep(20);
 	setContextMenuPolicy(Qt::CustomContextMenu);
 	verticalHeader()->setVisible(false);
 	horizontalHeader()->setVisible(false);

rpcs3/rpcs3qt/main_window.cpp

@@ -132,9 +132,20 @@ void main_window::Init()
 		msg.setWindowIcon(m_appIcon);
 		msg.setIcon(QMessageBox::Critical);
 		msg.setTextFormat(Qt::RichText);
-		msg.setText("Please understand that this build is not an official RPCS3 release.<br>This build contains changes that may break games, or even <b>damage</b> your data.<br>It's recommended to download and use the official build from <a href='https://rpcs3.net/download'>RPCS3 website</a>.<br><br>Build origin: " STRINGIZE(BRANCH) "<br>Do you wish to use this build anyway?");
 		msg.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
 		msg.setDefaultButton(QMessageBox::No);
+		msg.setText(QString(
+			R"(
+				<p style="white-space: nowrap;">
+					Please understand that this build is not an official RPCS3 release.<br>
+					This build contains changes that may break games, or even <b>damage</b> your data.<br>
+					We recommend to download and use the official build from the <a href='https://rpcs3.net/download'>RPCS3 website</a>.<br><br>
+					Build origin: %1<br>
+					Do you wish to use this build anyway?
+				</p>
+			)"
+		).arg(STRINGIZE(BRANCH)));
+		msg.layout()->setSizeConstraint(QLayout::SetFixedSize);
 
 		if (msg.exec() == QMessageBox::No)
 		{

rpcs3/rpcs3qt/welcome_dialog.ui

@@ -152,7 +152,6 @@
        </layout>
       </item>
      </layout>
-     <zorder></zorder>
     </widget>
    </item>
    <item>