Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 87 insertions, 0 deletions

diff --git a/ui/qt/widgets/stock_icon_tool_button.cpp b/ui/qt/widgets/stock_icon_tool_button.cpp
new file mode 100644
index 00000000..06aabae2
--- /dev/null
+++ b/ui/qt/widgets/stock_icon_tool_button.cpp
@@ -0,0 +1,87 @@
+/* stock_icon_tool_button.cpp
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <ui/qt/widgets/stock_icon_tool_button.h>
+
+#include <ui/qt/utils/stock_icon.h>
+
+#include <QApplication>
+#include <QEvent>
+#include <QMenu>
+#include <QMouseEvent>
+
+// We want nice icons that render correctly, and that are responsive
+// when the user hovers and clicks them.
+// Using setIcon renders correctly on normal and retina displays. It is
+// not completely responsive, particularly on macOS.
+// Calling setStyleSheet is responsive, but does not render correctly on
+// retina displays: https://bugreports.qt.io/browse/QTBUG-36825
+// Subclass QToolButton, which lets us catch events and set icons as needed.
+
+StockIconToolButton::StockIconToolButton(QWidget * parent, QString stock_icon_name) :
+    QToolButton(parent)
+{
+    setCursor(Qt::ArrowCursor);
+    setStockIcon(stock_icon_name);
+}
+
+void StockIconToolButton::setIconMode(QIcon::Mode mode)
+{
+    QIcon mode_icon;
+    QList<QIcon::State> states = QList<QIcon::State>() << QIcon::Off << QIcon::On;
+    foreach (QIcon::State state, states) {
+        foreach (QSize size, base_icon_.availableSizes(mode, state)) {
+            mode_icon.addPixmap(base_icon_.pixmap(size, mode, state), mode, state);
+        }
+    }
+    setIcon(mode_icon);
+}
+
+void StockIconToolButton::setStockIcon(QString icon_name)
+{
+    if (!icon_name.isEmpty()) {
+        icon_name_ = icon_name;
+    }
+    if (icon_name_.isEmpty()) {
+        return;
+    }
+    base_icon_ = StockIcon(icon_name_);
+    setIconMode();
+}
+
+bool StockIconToolButton::event(QEvent *event)
+{
+    switch (event->type()) {
+    case QEvent::Enter:
+        if (isEnabled()) {
+            setIconMode(QIcon::Active);
+        }
+        break;
+    case QEvent::Leave:
+        if (isEnabled()) {
+            setIconMode();
+        }
+        break;
+    case QEvent::MouseButtonPress:
+        if (isEnabled()) {
+            setIconMode(QIcon::Selected);
+        }
+        break;
+    case QEvent::MouseButtonRelease:
+        setIconMode();
+        break;
+    case QEvent::ApplicationPaletteChange:
+        setStockIcon();
+        break;
+    default:
+        break;
+    }
+
+    return QToolButton::event(event);
+}