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Linux: Implement support for extra mouse buttons

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Oliver James 2025-06-27 14:06:51 +01:00 • committed by reuk
parent c01bf65d3f
commit fa6fa9a61a
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2 changed files with 30 additions and 23 deletions
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51
modules/juce_gui_basics/native/juce_XWindowSystem_linux.cpp
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@ -411,7 +411,9 @@ namespace Keys
MiddleButton = 2,
RightButton = 3,
WheelUp = 4,
WheelDown = 5
WheelDown = 5,
BackButton = 6,
ForwardButton = 7
};
static int AltMask = 0;
@ -2518,6 +2520,7 @@ ModifierKeys XWindowSystem::getNativeRealtimeModifiers() const
XWindowSystemUtilities::ScopedXLock xLock;
// xQueryPointer doesn't emit masks for back/forward buttons.
if (X11Symbols::getInstance()->xQueryPointer (display,
X11Symbols::getInstance()->xRootWindow (display,
X11Symbols::getInstance()->xDefaultScreen (display)),
@ -3077,26 +3080,24 @@ void XWindowSystem::setWindowType (::Window windowH, int styleFlags) const
void XWindowSystem::initialisePointerMap()
{
auto numButtons = X11Symbols::getInstance()->xGetPointerMapping (display, nullptr, 0);
pointerMap[2] = pointerMap[3] = pointerMap[4] = Keys::NoButton;
const auto numButtons = X11Symbols::getInstance()->xGetPointerMapping (display, nullptr, 0);
std::fill_n (pointerMap, std::size (pointerMap), Keys::NoButton);
if (numButtons == 2)
{
pointerMap[0] = Keys::LeftButton;
pointerMap[1] = Keys::RightButton;
}
else if (numButtons >= 3)
{
pointerMap[0] = Keys::LeftButton;
pointerMap[1] = Keys::MiddleButton;
pointerMap[2] = Keys::RightButton;
constexpr unsigned char twoButtons[] { Keys::LeftButton, Keys::RightButton };
constexpr unsigned char moreButtons[] { Keys::LeftButton,
Keys::MiddleButton,
Keys::RightButton,
Keys::WheelUp,
Keys::WheelDown,
Keys::NoButton,
Keys::NoButton,
Keys::BackButton,
Keys::ForwardButton };
static_assert (std::size (moreButtons) >= std::size (decltype (pointerMap){}));
if (numButtons >= 5)
{
pointerMap[3] = Keys::WheelUp;
pointerMap[4] = Keys::WheelDown;
}
}
auto* sourceArray = numButtons == 2 ? twoButtons : moreButtons;
const auto numToCopy = jmin (numButtons, (int) std::size (pointerMap));
std::copy (sourceArray, sourceArray + numToCopy, pointerMap);
}
void XWindowSystem::deleteIconPixmaps (::Window windowH) const
@ -3620,6 +3621,9 @@ void XWindowSystem::handleButtonPressEvent (LinuxComponentPeer* peer, const XBut
case Keys::LeftButton: handleButtonPressEvent (peer, buttonPressEvent, ModifierKeys::leftButtonModifier); break;
case Keys::RightButton: handleButtonPressEvent (peer, buttonPressEvent, ModifierKeys::rightButtonModifier); break;
case Keys::MiddleButton: handleButtonPressEvent (peer, buttonPressEvent, ModifierKeys::middleButtonModifier); break;
case Keys::BackButton: handleButtonPressEvent (peer, buttonPressEvent, ModifierKeys::backButtonModifier); break;
case Keys::ForwardButton: handleButtonPressEvent (peer, buttonPressEvent, ModifierKeys::forwardButtonModifier); break;
default: break;
}
}
@ -3638,9 +3642,12 @@ void XWindowSystem::handleButtonReleaseEvent (LinuxComponentPeer* peer, const XB
{
switch (pointerMap[mapIndex])
{
case Keys::LeftButton: ModifierKeys::currentModifiers = ModifierKeys::getCurrentModifiers().withoutFlags (ModifierKeys::leftButtonModifier); break;
case Keys::RightButton: ModifierKeys::currentModifiers = ModifierKeys::getCurrentModifiers().withoutFlags (ModifierKeys::rightButtonModifier); break;
case Keys::MiddleButton: ModifierKeys::currentModifiers = ModifierKeys::getCurrentModifiers().withoutFlags (ModifierKeys::middleButtonModifier); break;
case Keys::LeftButton: ModifierKeys::currentModifiers = ModifierKeys::getCurrentModifiers().withoutFlags (ModifierKeys::leftButtonModifier); break;
case Keys::RightButton: ModifierKeys::currentModifiers = ModifierKeys::getCurrentModifiers().withoutFlags (ModifierKeys::rightButtonModifier); break;
case Keys::MiddleButton: ModifierKeys::currentModifiers = ModifierKeys::getCurrentModifiers().withoutFlags (ModifierKeys::middleButtonModifier); break;
case Keys::BackButton: ModifierKeys::currentModifiers = ModifierKeys::getCurrentModifiers().withoutFlags (ModifierKeys::backButtonModifier); break;
case Keys::ForwardButton: ModifierKeys::currentModifiers = ModifierKeys::getCurrentModifiers().withoutFlags (ModifierKeys::forwardButtonModifier); break;
default: break;
}
}

2
modules/juce_gui_basics/native/juce_XWindowSystem_linux.h
View file

@ -352,7 +352,7 @@ private:
#endif
int shmCompletionEvent = 0;
int pointerMap[5] = {};
unsigned char pointerMap[9]{};
String localClipboardContent;
Point<int> parentScreenPosition;