mirror of
https://github.com/glfw/glfw.git
synced 2024-11-10 00:51:47 +00:00
Add support for mouse input transparency
This adds the GLFW_MOUSE_PASSTHROUGH window hint and attribute for controlling whether mouse input passes through the window to whatever window is behind it. Fixes #1236. Closes #1568.
This commit is contained in:
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6c031af245
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@ -895,6 +895,13 @@ extern "C" {
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*/
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#define GLFW_FOCUS_ON_SHOW 0x0002000C
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/*! @brief Forward mouse input to window behind.
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*
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* Mouse input forwarding[window hint](@ref GLFW_MOUSE_PASSTHROUGH_hint) or
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* [window attribute](@ref GLFW_MOUSE_PASSTHROUGH_attrib).
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*/
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#define GLFW_MOUSE_PASSTHROUGH 0x0002000D
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/*! @brief Framebuffer bit depth hint.
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*
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* Framebuffer bit depth [hint](@ref GLFW_RED_BITS).
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@ -3656,6 +3663,7 @@ GLFWAPI int glfwGetWindowAttrib(GLFWwindow* window, int attrib);
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* [GLFW_FLOATING](@ref GLFW_FLOATING_attrib),
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* [GLFW_AUTO_ICONIFY](@ref GLFW_AUTO_ICONIFY_attrib) and
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* [GLFW_FOCUS_ON_SHOW](@ref GLFW_FOCUS_ON_SHOW_attrib).
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* [GLFW_MOUSE_PASSTHROUGH](@ref GLFW_MOUSE_PASSTHROUGH_attrib)
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*
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* Some of these attributes are ignored for full screen windows. The new
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* value will take effect if the window is later made windowed.
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@ -1371,6 +1371,14 @@ void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
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} // autoreleasepool
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}
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void _glfwPlatformSetWindowMousePassthrough(_GLFWwindow* window, GLFWbool enabled)
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{
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window->mousePassthrough = enabled;
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@autoreleasepool {
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[window->ns.object setIgnoresMouseEvents:enabled];
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}
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}
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float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
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{
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@autoreleasepool {
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@ -270,6 +270,7 @@ struct _GLFWwndconfig
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GLFWbool maximized;
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GLFWbool centerCursor;
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GLFWbool focusOnShow;
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GLFWbool mousePassthrough;
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GLFWbool scaleToMonitor;
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struct {
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GLFWbool retina;
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@ -380,6 +381,7 @@ struct _GLFWwindow
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GLFWbool autoIconify;
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GLFWbool floating;
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GLFWbool focusOnShow;
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GLFWbool mousePassthrough;
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GLFWbool shouldClose;
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void* userPointer;
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GLFWvidmode videoMode;
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@ -678,6 +680,7 @@ float _glfwPlatformGetWindowOpacity(_GLFWwindow* window);
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void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled);
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void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, GLFWbool enabled);
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void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled);
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void _glfwPlatformSetWindowMousePassthrough(_GLFWwindow* window, GLFWbool enabled);
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void _glfwPlatformSetWindowOpacity(_GLFWwindow* window, float opacity);
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void _glfwPlatformPollEvents(void);
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@ -362,6 +362,10 @@ void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
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window->null.floating = enabled;
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}
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void _glfwPlatformSetWindowMousePassthrough(_GLFWwindow* window, GLFWbool enabled)
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{
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}
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float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
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{
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return window->null.opacity;
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@ -1201,6 +1201,13 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
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DragFinish(drop);
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return 0;
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}
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case WM_NCHITTEST:
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{
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if (window->mousePassthrough)
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return HTTRANSPARENT;
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break;
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}
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}
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return DefWindowProcW(hWnd, uMsg, wParam, lParam);
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@ -1854,6 +1861,11 @@ void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
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SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
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}
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void _glfwPlatformSetWindowMousePassthrough(_GLFWwindow* window, GLFWbool enabled)
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{
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window->mousePassthrough = enabled;
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}
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float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
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{
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BYTE alpha;
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@ -243,6 +243,8 @@ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height,
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}
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}
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_glfwPlatformSetWindowMousePassthrough(window, wndconfig.mousePassthrough);
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return (GLFWwindow*) window;
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}
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@ -378,6 +380,9 @@ GLFWAPI void glfwWindowHint(int hint, int value)
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case GLFW_FOCUS_ON_SHOW:
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_glfw.hints.window.focusOnShow = value ? GLFW_TRUE : GLFW_FALSE;
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return;
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case GLFW_MOUSE_PASSTHROUGH:
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_glfw.hints.window.mousePassthrough = value ? GLFW_TRUE : GLFW_FALSE;
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return;
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case GLFW_CLIENT_API:
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_glfw.hints.context.client = value;
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return;
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@ -822,6 +827,8 @@ GLFWAPI int glfwGetWindowAttrib(GLFWwindow* handle, int attrib)
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return _glfwPlatformWindowHovered(window);
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case GLFW_FOCUS_ON_SHOW:
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return window->focusOnShow;
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case GLFW_MOUSE_PASSTHROUGH:
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return window->mousePassthrough;
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case GLFW_TRANSPARENT_FRAMEBUFFER:
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return _glfwPlatformFramebufferTransparent(window);
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case GLFW_RESIZABLE:
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@ -900,6 +907,8 @@ GLFWAPI void glfwSetWindowAttrib(GLFWwindow* handle, int attrib, int value)
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}
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else if (attrib == GLFW_FOCUS_ON_SHOW)
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window->focusOnShow = value;
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else if (attrib == GLFW_MOUSE_PASSTHROUGH)
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_glfwPlatformSetWindowMousePassthrough(window, value);
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else
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_glfwInputError(GLFW_INVALID_ENUM, "Invalid window attribute 0x%08X", attrib);
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}
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@ -1127,6 +1127,23 @@ void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
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"Wayland: Window attribute setting not implemented yet");
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}
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void _glfwPlatformSetWindowMousePassthrough(_GLFWwindow* window, GLFWbool enabled)
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{
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if (enabled == window->mousePassthrough)
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return;
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if (enabled)
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{
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struct wl_region* region = wl_compositor_create_region(_glfw.wl.compositor);
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wl_surface_set_input_region(window->wl.surface, region);
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wl_region_destroy(region);
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}
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else
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wl_surface_set_input_region(window->wl.surface, 0);
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wl_surface_commit(window->wl.surface);
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window->mousePassthrough = enabled;
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}
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float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
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{
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return 1.f;
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@ -851,6 +851,33 @@ static GLFWbool initExtensions(void)
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}
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}
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#if defined(__CYGWIN__)
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_glfw.x11.xshape.handle = _glfw_dlopen("libXext-6.so");
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#else
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_glfw.x11.xshape.handle = _glfw_dlopen("libXext.so.6");
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#endif
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if (_glfw.x11.xshape.handle)
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{
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_glfw.x11.xshape.QueryExtension = (PFN_XShapeQueryExtension)
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_glfw_dlsym(_glfw.x11.xshape.handle, "XShapeQueryExtension");
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_glfw.x11.xshape.ShapeCombineRegion = (PFN_XShapeCombineRegion)
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_glfw_dlsym(_glfw.x11.xshape.handle, "XShapeCombineRegion");
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_glfw.x11.xshape.QueryVersion = (PFN_XShapeQueryVersion)
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_glfw_dlsym(_glfw.x11.xshape.handle, "XShapeQueryVersion");
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if (XShapeQueryExtension(_glfw.x11.display,
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&_glfw.x11.xshape.errorBase,
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&_glfw.x11.xshape.eventBase))
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{
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if (XShapeQueryVersion(_glfw.x11.display,
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&_glfw.x11.xshape.major,
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&_glfw.x11.xshape.minor))
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{
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_glfw.x11.xshape.available = GLFW_TRUE;
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}
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}
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}
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// Update the key code LUT
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// FIXME: We should listen to XkbMapNotify events to track changes to
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// the keyboard mapping.
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@ -1122,6 +1149,8 @@ int _glfwPlatformInit(void)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XCreateFontCursor");
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_glfw.x11.xlib.CreateIC = (PFN_XCreateIC)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XCreateIC");
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_glfw.x11.xlib.CreateRegion = (PFN_XCreateRegion)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XCreateRegion");
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_glfw.x11.xlib.CreateWindow = (PFN_XCreateWindow)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XCreateWindow");
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_glfw.x11.xlib.DefineCursor = (PFN_XDefineCursor)
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@ -1132,6 +1161,8 @@ int _glfwPlatformInit(void)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XDeleteProperty");
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_glfw.x11.xlib.DestroyIC = (PFN_XDestroyIC)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XDestroyIC");
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_glfw.x11.xlib.DestroyRegion = (PFN_XDestroyRegion)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XDestroyRegion");
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_glfw.x11.xlib.DestroyWindow = (PFN_XDestroyWindow)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XDestroyWindow");
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_glfw.x11.xlib.DisplayKeycodes = (PFN_XDisplayKeycodes)
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@ -1254,6 +1285,8 @@ int _glfwPlatformInit(void)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XUndefineCursor");
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_glfw.x11.xlib.UngrabPointer = (PFN_XUngrabPointer)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XUngrabPointer");
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_glfw.x11.xlib.UnionRectWithRegion = (PFN_XUnionRectWithRegion)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XUnionRectWithRegion");
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_glfw.x11.xlib.UnmapWindow = (PFN_XUnmapWindow)
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_glfw_dlsym(_glfw.x11.xlib.handle, "XUnmapWindow");
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_glfw.x11.xlib.UnsetICFocus = (PFN_XUnsetICFocus)
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@ -61,11 +61,13 @@ typedef int (* PFN_XConvertSelection)(Display*,Atom,Atom,Atom,Window,Time);
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typedef Colormap (* PFN_XCreateColormap)(Display*,Window,Visual*,int);
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typedef Cursor (* PFN_XCreateFontCursor)(Display*,unsigned int);
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typedef XIC (* PFN_XCreateIC)(XIM,...);
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typedef Region (* PFN_XCreateRegion)(void);
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typedef Window (* PFN_XCreateWindow)(Display*,Window,int,int,unsigned int,unsigned int,unsigned int,int,unsigned int,Visual*,unsigned long,XSetWindowAttributes*);
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typedef int (* PFN_XDefineCursor)(Display*,Window,Cursor);
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typedef int (* PFN_XDeleteContext)(Display*,XID,XContext);
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typedef int (* PFN_XDeleteProperty)(Display*,Window,Atom);
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typedef void (* PFN_XDestroyIC)(XIC);
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typedef int (* PFN_XDestroyRegion)(Region);
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typedef int (* PFN_XDestroyWindow)(Display*,Window);
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typedef int (* PFN_XDisplayKeycodes)(Display*,int*,int*);
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typedef int (* PFN_XEventsQueued)(Display*,int);
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@ -127,6 +129,7 @@ typedef int (* PFN_XSync)(Display*,Bool);
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typedef Bool (* PFN_XTranslateCoordinates)(Display*,Window,Window,int,int,int*,int*,Window*);
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typedef int (* PFN_XUndefineCursor)(Display*,Window);
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typedef int (* PFN_XUngrabPointer)(Display*,Time);
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typedef int (* PFN_XUnionRectWithRegion)(XRectangle*,Region,Region);
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typedef int (* PFN_XUnmapWindow)(Display*,Window);
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typedef void (* PFN_XUnsetICFocus)(XIC);
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typedef VisualID (* PFN_XVisualIDFromVisual)(Visual*);
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@ -161,11 +164,13 @@ typedef void (* PFN_Xutf8SetWMProperties)(Display*,Window,const char*,const char
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#define XCreateColormap _glfw.x11.xlib.CreateColormap
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#define XCreateFontCursor _glfw.x11.xlib.CreateFontCursor
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#define XCreateIC _glfw.x11.xlib.CreateIC
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#define XCreateRegion _glfw.x11.xlib.CreateRegion
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#define XCreateWindow _glfw.x11.xlib.CreateWindow
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#define XDefineCursor _glfw.x11.xlib.DefineCursor
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#define XDeleteContext _glfw.x11.xlib.DeleteContext
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#define XDeleteProperty _glfw.x11.xlib.DeleteProperty
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#define XDestroyIC _glfw.x11.xlib.DestroyIC
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#define XDestroyRegion _glfw.x11.xlib.DestroyRegion
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#define XDestroyWindow _glfw.x11.xlib.DestroyWindow
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#define XDisplayKeycodes _glfw.x11.xlib.DisplayKeycodes
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#define XEventsQueued _glfw.x11.xlib.EventsQueued
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@ -227,6 +232,7 @@ typedef void (* PFN_Xutf8SetWMProperties)(Display*,Window,const char*,const char
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#define XTranslateCoordinates _glfw.x11.xlib.TranslateCoordinates
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#define XUndefineCursor _glfw.x11.xlib.UndefineCursor
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#define XUngrabPointer _glfw.x11.xlib.UngrabPointer
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#define XUnionRectWithRegion _glfw.x11.xlib.UnionRectWithRegion
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#define XUnmapWindow _glfw.x11.xlib.UnmapWindow
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#define XUnsetICFocus _glfw.x11.xlib.UnsetICFocus
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#define XVisualIDFromVisual _glfw.x11.xlib.VisualIDFromVisual
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@ -331,6 +337,13 @@ typedef XRenderPictFormat* (* PFN_XRenderFindVisualFormat)(Display*,Visual const
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#define XRenderQueryVersion _glfw.x11.xrender.QueryVersion
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#define XRenderFindVisualFormat _glfw.x11.xrender.FindVisualFormat
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typedef Bool (* PFN_XShapeQueryExtension)(Display*,int*,int*);
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typedef Status (* PFN_XShapeQueryVersion)(Display*dpy,int*,int*);
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typedef void (* PFN_XShapeCombineRegion)(Display*,Window,int,int,int,Region,int);
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#define XShapeQueryExtension _glfw.x11.xshape.QueryExtension
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#define XShapeQueryVersion _glfw.x11.xshape.QueryVersion
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#define XShapeCombineRegion _glfw.x11.xshape.ShapeCombineRegion
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typedef VkFlags VkXlibSurfaceCreateFlagsKHR;
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typedef VkFlags VkXcbSurfaceCreateFlagsKHR;
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@ -515,11 +528,13 @@ typedef struct _GLFWlibraryX11
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PFN_XCreateColormap CreateColormap;
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PFN_XCreateFontCursor CreateFontCursor;
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PFN_XCreateIC CreateIC;
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PFN_XCreateRegion CreateRegion;
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PFN_XCreateWindow CreateWindow;
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PFN_XDefineCursor DefineCursor;
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PFN_XDeleteContext DeleteContext;
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PFN_XDeleteProperty DeleteProperty;
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PFN_XDestroyIC DestroyIC;
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PFN_XDestroyRegion DestroyRegion;
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PFN_XDestroyWindow DestroyWindow;
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PFN_XDisplayKeycodes DisplayKeycodes;
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PFN_XEventsQueued EventsQueued;
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@ -581,6 +596,7 @@ typedef struct _GLFWlibraryX11
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PFN_XTranslateCoordinates TranslateCoordinates;
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PFN_XUndefineCursor UndefineCursor;
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PFN_XUngrabPointer UngrabPointer;
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PFN_XUnionRectWithRegion UnionRectWithRegion;
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PFN_XUnmapWindow UnmapWindow;
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PFN_XUnsetICFocus UnsetICFocus;
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PFN_XVisualIDFromVisual VisualIDFromVisual;
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@ -720,6 +736,18 @@ typedef struct _GLFWlibraryX11
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PFN_XRenderFindVisualFormat FindVisualFormat;
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} xrender;
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struct {
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GLFWbool available;
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void* handle;
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int major;
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int minor;
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int eventBase;
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int errorBase;
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PFN_XShapeQueryExtension QueryExtension;
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PFN_XShapeCombineRegion ShapeCombineRegion;
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PFN_XShapeQueryVersion QueryVersion;
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} xshape;
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} _GLFWlibraryX11;
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// X11-specific per-monitor data
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@ -2702,6 +2702,32 @@ void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
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XFlush(_glfw.x11.display);
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}
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void _glfwPlatformSetWindowMousePassthrough(_GLFWwindow* window, GLFWbool enabled)
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{
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if (!_glfw.x11.xshape.available)
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return;
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if (enabled == window->mousePassthrough)
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return;
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int width = 0;
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int height = 0;
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if (!enabled)
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_glfwPlatformGetWindowSize(window, &width, &height);
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XRectangle rect;
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rect.x = 0;
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rect.y = 0;
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rect.width = (unsigned short)width;
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rect.height = (unsigned short)height;
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Region region = XCreateRegion();
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XUnionRectWithRegion(&rect, region, region);
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XShapeCombineRegion(_glfw.x11.display, window->x11.handle, 2/*ShapeInput*/, 0, 0, region, 0/*ShapeSet*/);
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XDestroyRegion(region);
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window->mousePassthrough = enabled;
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}
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float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
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{
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float opacity = 1.f;
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