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Add GLFW_TRANSPARENT attribute and documentation

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This completes support for window framebuffer transparency on Windows,
macOS and X11.  Note that the hint/attribute may be renamed before
release to clarify its relationship to GLFW_OPACITY.

Fixes #197.
Closes #1079.
Related to #663.
Related to #715.
Related to #723.
Related to #1078.
This commit is contained in:
Camilla Löwy
2017-09-18 18:10:57 +02:00
parent 93e66661d3
commit 32e78aeb2e
22 changed files with 322 additions and 318 deletions
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51
src/x11_platform.h
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@@ -116,6 +116,13 @@ typedef int (* PFN_XISelectEvents)(Display*,Window,XIEventMask*,int);
#define XIQueryVersion _glfw.x11.xi.QueryVersion
#define XISelectEvents _glfw.x11.xi.SelectEvents
typedef Bool (* PFN_XRenderQueryExtension)(Display*,int*,int*);
typedef Status (* PFN_XRenderQueryVersion)(Display*dpy,int*,int*);
typedef XRenderPictFormat* (* PFN_XRenderFindVisualFormat)(Display*,Visual const*);
#define XRenderQueryExtension _glfw.x11.xrender.QueryExtension
#define XRenderQueryVersion _glfw.x11.xrender.QueryVersion
#define XRenderFindVisualFormat _glfw.x11.xrender.FindVisualFormat
typedef VkFlags VkXlibSurfaceCreateFlagsKHR;
typedef VkFlags VkXcbSurfaceCreateFlagsKHR;
@@ -162,20 +169,10 @@ typedef VkBool32 (APIENTRY *PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR)(Vk
#define _GLFW_EGL_NATIVE_DISPLAY ((EGLNativeDisplayType) _glfw.x11.display)
#define _GLFW_PLATFORM_WINDOW_STATE _GLFWwindowX11 x11
#define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryX11 x11 ; _GLFWlibraryXrender xrender
#define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryX11 x11
#define _GLFW_PLATFORM_MONITOR_STATE _GLFWmonitorX11 x11
#define _GLFW_PLATFORM_CURSOR_STATE _GLFWcursorX11 x11
// libXrender.so function pointer typedefs
typedef Bool (*PFNXRENDERQUERYEXTENSIONPROC)(Display*,int*,int*);
typedef Status (*PFNXRENDERQUERYVERSIONPROC)(Display*dpy,int*,int*);
typedef XRenderPictFormat* (*PFNXRENDERFINDVISUALFORMATPROC)(Display*,Visual const *);
// libXrender.so function identifier overlays
#define XRenderQueryExtension _glfw.xrender.QueryExtension
#define XRenderQueryVersion _glfw.xrender.QueryVersion
#define XRenderFindVisualFormat _glfw.xrender.FindVisualFormat
// X11-specific per-window data
//
@@ -189,6 +186,9 @@ typedef struct _GLFWwindowX11
GLFWbool iconified;
GLFWbool maximized;
// Whether the visual supports framebuffer transparency
GLFWbool transparent;
// Cached position and size used to filter out duplicate events
int width, height;
int xpos, ypos;
@@ -383,24 +383,20 @@ typedef struct _GLFWlibraryX11
PFN_XISelectEvents SelectEvents;
} xi;
struct {
GLFWbool available;
void* handle;
int major;
int minor;
int eventBase;
int errorBase;
PFN_XRenderQueryExtension QueryExtension;
PFN_XRenderQueryVersion QueryVersion;
PFN_XRenderFindVisualFormat FindVisualFormat;
} xrender;
} _GLFWlibraryX11;
// Xrender-specific global data
typedef struct _GLFWlibraryXrender
{
int major, minor;
int eventBase;
int errorBase;
// dlopen handle for libGL.so.1
void* handle;
// Xrender functions (subset required for transparent window)
PFNXRENDERQUERYEXTENSIONPROC QueryExtension;
PFNXRENDERQUERYVERSIONPROC QueryVersion;
PFNXRENDERFINDVISUALFORMATPROC FindVisualFormat;
} _GLFWlibraryXrender;
// X11-specific per-monitor data
//
typedef struct _GLFWmonitorX11
@@ -434,6 +430,7 @@ unsigned long _glfwGetWindowPropertyX11(Window window,
Atom property,
Atom type,
unsigned char** value);
GLFWbool _glfwIsVisualTransparentX11(Visual* visual);
void _glfwGrabErrorHandlerX11(void);
void _glfwReleaseErrorHandlerX11(void);