mirror of
https://github.com/glfw/glfw.git
synced 2026-09-22 08:50:15 +00:00
Implement window decorations
This commit is contained in:
Emmanuel Gil Peyrot
committed by
linkmauve
linkmauve
parent
9dc18a62a6
commit
9f7ec6b094
+191
-123
@@ -95,6 +95,193 @@ static const struct wl_shell_surface_listener shellSurfaceListener = {
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handlePopupDone
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};
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static int
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createTmpfileCloexec(char* tmpname)
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{
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int fd;
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fd = mkostemp(tmpname, O_CLOEXEC);
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if (fd >= 0)
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unlink(tmpname);
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return fd;
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}
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/*
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* Create a new, unique, anonymous file of the given size, and
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* return the file descriptor for it. The file descriptor is set
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* CLOEXEC. The file is immediately suitable for mmap()'ing
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* the given size at offset zero.
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*
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* The file should not have a permanent backing store like a disk,
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* but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
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*
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* The file name is deleted from the file system.
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*
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* The file is suitable for buffer sharing between processes by
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* transmitting the file descriptor over Unix sockets using the
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* SCM_RIGHTS methods.
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*
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* posix_fallocate() is used to guarantee that disk space is available
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* for the file at the given size. If disk space is insufficent, errno
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* is set to ENOSPC. If posix_fallocate() is not supported, program may
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* receive SIGBUS on accessing mmap()'ed file contents instead.
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*/
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static int
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createAnonymousFile(off_t size)
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{
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static const char template[] = "/glfw-shared-XXXXXX";
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const char* path;
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char* name;
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int fd;
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int ret;
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path = getenv("XDG_RUNTIME_DIR");
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if (!path)
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{
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errno = ENOENT;
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return -1;
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}
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name = calloc(strlen(path) + sizeof(template), 1);
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strcpy(name, path);
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strcat(name, template);
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fd = createTmpfileCloexec(name);
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free(name);
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if (fd < 0)
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return -1;
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ret = posix_fallocate(fd, 0, size);
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if (ret != 0)
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{
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close(fd);
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errno = ret;
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return -1;
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}
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return fd;
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}
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static struct wl_buffer* createShmBuffer(const GLFWimage* image)
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{
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struct wl_shm_pool* pool;
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struct wl_buffer* buffer;
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int stride = image->width * 4;
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int length = image->width * image->height * 4;
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void* data;
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int fd, i;
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fd = createAnonymousFile(length);
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if (fd < 0)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"Wayland: Creating a buffer file for %d B failed: %m",
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length);
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return GLFW_FALSE;
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}
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data = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (data == MAP_FAILED)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"Wayland: mmap failed: %m");
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close(fd);
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return GLFW_FALSE;
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}
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pool = wl_shm_create_pool(_glfw.wl.shm, fd, length);
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close(fd);
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unsigned char* source = (unsigned char*) image->pixels;
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unsigned char* target = data;
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for (i = 0; i < image->width * image->height; i++, source += 4)
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{
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unsigned int alpha = source[3];
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*target++ = (unsigned char) ((source[2] * alpha) / 255);
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*target++ = (unsigned char) ((source[1] * alpha) / 255);
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*target++ = (unsigned char) ((source[0] * alpha) / 255);
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*target++ = (unsigned char) alpha;
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}
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buffer =
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wl_shm_pool_create_buffer(pool, 0,
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image->width,
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image->height,
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stride, WL_SHM_FORMAT_ARGB8888);
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munmap(data, length);
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wl_shm_pool_destroy(pool);
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return buffer;
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}
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static void createDecoration(_GLFWdecorationWayland* decoration,
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struct wl_surface* parent,
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struct wl_buffer* buffer, int x, int y,
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int width, int height)
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{
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decoration->surface = wl_compositor_create_surface(_glfw.wl.compositor);
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decoration->subsurface =
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wl_subcompositor_get_subsurface(_glfw.wl.subcompositor,
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decoration->surface, parent);
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wl_subsurface_set_position(decoration->subsurface, x, y);
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decoration->viewport = wp_viewporter_get_viewport(_glfw.wl.viewporter,
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decoration->surface);
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wp_viewport_set_destination(decoration->viewport, width, height);
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wl_surface_attach(decoration->surface, buffer, 0, 0);
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wl_surface_commit(decoration->surface);
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}
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static void createDecorations(_GLFWwindow* window)
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{
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unsigned char data[] = { 224, 224, 224, 255 };
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const GLFWimage image = { 1, 1, data };
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struct wl_buffer* buffer = createShmBuffer(&image);
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createDecoration(&window->wl.decorations.top, window->wl.surface, buffer,
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0, -_GLFW_DECORATION_TOP,
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window->wl.width, _GLFW_DECORATION_TOP);
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createDecoration(&window->wl.decorations.left, window->wl.surface, buffer,
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-_GLFW_DECORATION_WIDTH, -_GLFW_DECORATION_TOP,
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_GLFW_DECORATION_WIDTH, window->wl.height + _GLFW_DECORATION_TOP);
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createDecoration(&window->wl.decorations.right, window->wl.surface, buffer,
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window->wl.width, -_GLFW_DECORATION_TOP,
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_GLFW_DECORATION_WIDTH, window->wl.height + _GLFW_DECORATION_TOP);
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createDecoration(&window->wl.decorations.bottom, window->wl.surface, buffer,
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-_GLFW_DECORATION_WIDTH, window->wl.height,
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window->wl.width + 2 * _GLFW_DECORATION_WIDTH, _GLFW_DECORATION_WIDTH);
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}
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static void resizeWindow(_GLFWwindow* window, int width, int height)
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{
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wl_egl_window_resize(window->wl.native, width, height, 0, 0);
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// Top decoration.
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wp_viewport_set_destination(window->wl.decorations.top.viewport, width, _GLFW_DECORATION_TOP);
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wl_surface_commit(window->wl.decorations.top.surface);
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// Left decoration.
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wp_viewport_set_destination(window->wl.decorations.left.viewport,
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_GLFW_DECORATION_WIDTH, window->wl.height + _GLFW_DECORATION_TOP);
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wl_surface_commit(window->wl.decorations.left.surface);
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// Right decoration.
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wl_subsurface_set_position(window->wl.decorations.right.subsurface,
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window->wl.width, -_GLFW_DECORATION_TOP);
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wp_viewport_set_destination(window->wl.decorations.right.viewport,
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_GLFW_DECORATION_WIDTH, window->wl.height + _GLFW_DECORATION_TOP);
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wl_surface_commit(window->wl.decorations.right.surface);
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// Bottom decoration.
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wl_subsurface_set_position(window->wl.decorations.bottom.subsurface,
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-_GLFW_DECORATION_WIDTH, window->wl.height);
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wp_viewport_set_destination(window->wl.decorations.bottom.viewport,
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width + 2 * _GLFW_DECORATION_WIDTH, _GLFW_DECORATION_WIDTH);
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wl_surface_commit(window->wl.decorations.bottom.surface);
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}
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static void checkScaleChange(_GLFWwindow* window)
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{
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int scaledWidth, scaledHeight;
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@@ -121,7 +308,7 @@ static void checkScaleChange(_GLFWwindow* window)
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scaledWidth = window->wl.width * scale;
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scaledHeight = window->wl.height * scale;
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wl_surface_set_buffer_scale(window->wl.surface, scale);
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wl_egl_window_resize(window->wl.native, scaledWidth, scaledHeight, 0, 0);
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resizeWindow(window, scaledWidth, scaledHeight);
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_glfwInputFramebufferSize(window, scaledWidth, scaledHeight);
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_glfwInputWindowContentScale(window, scale, scale);
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}
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@@ -232,6 +419,8 @@ static GLFWbool createSurface(_GLFWwindow* window,
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if (!window->wl.transparent)
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setOpaqueRegion(window);
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createDecorations(window);
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return GLFW_TRUE;
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}
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@@ -425,18 +614,6 @@ static GLFWbool createXdgSurface(_GLFWwindow* window)
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return GLFW_TRUE;
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}
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static int
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createTmpfileCloexec(char* tmpname)
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{
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int fd;
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fd = mkostemp(tmpname, O_CLOEXEC);
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if (fd >= 0)
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unlink(tmpname);
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return fd;
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}
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static void
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handleEvents(int timeout)
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{
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@@ -496,115 +673,6 @@ handleEvents(int timeout)
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}
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}
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/*
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* Create a new, unique, anonymous file of the given size, and
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* return the file descriptor for it. The file descriptor is set
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* CLOEXEC. The file is immediately suitable for mmap()'ing
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* the given size at offset zero.
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*
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* The file should not have a permanent backing store like a disk,
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* but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
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*
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* The file name is deleted from the file system.
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*
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* The file is suitable for buffer sharing between processes by
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* transmitting the file descriptor over Unix sockets using the
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* SCM_RIGHTS methods.
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*
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* posix_fallocate() is used to guarantee that disk space is available
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* for the file at the given size. If disk space is insufficent, errno
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* is set to ENOSPC. If posix_fallocate() is not supported, program may
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* receive SIGBUS on accessing mmap()'ed file contents instead.
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*/
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static int
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createAnonymousFile(off_t size)
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{
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static const char template[] = "/glfw-shared-XXXXXX";
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const char* path;
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char* name;
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int fd;
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int ret;
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path = getenv("XDG_RUNTIME_DIR");
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if (!path)
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{
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errno = ENOENT;
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return -1;
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}
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name = calloc(strlen(path) + sizeof(template), 1);
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strcpy(name, path);
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strcat(name, template);
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fd = createTmpfileCloexec(name);
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free(name);
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if (fd < 0)
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return -1;
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ret = posix_fallocate(fd, 0, size);
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if (ret != 0)
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{
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close(fd);
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errno = ret;
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return -1;
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}
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return fd;
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}
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static struct wl_buffer* createShmBuffer(const GLFWimage* image)
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{
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struct wl_shm_pool* pool;
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struct wl_buffer* buffer;
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int stride = image->width * 4;
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int length = image->width * image->height * 4;
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void* data;
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int fd, i;
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fd = createAnonymousFile(length);
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if (fd < 0)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"Wayland: Creating a buffer file for %d B failed: %m",
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length);
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return GLFW_FALSE;
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}
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data = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (data == MAP_FAILED)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"Wayland: Cursor mmap failed: %m");
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close(fd);
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return GLFW_FALSE;
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}
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pool = wl_shm_create_pool(_glfw.wl.shm, fd, length);
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close(fd);
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unsigned char* source = (unsigned char*) image->pixels;
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unsigned char* target = data;
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for (i = 0; i < image->width * image->height; i++, source += 4)
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{
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unsigned int alpha = source[3];
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*target++ = (unsigned char) ((source[2] * alpha) / 255);
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*target++ = (unsigned char) ((source[1] * alpha) / 255);
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*target++ = (unsigned char) ((source[0] * alpha) / 255);
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*target++ = (unsigned char) alpha;
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}
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buffer =
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wl_shm_pool_create_buffer(pool, 0,
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image->width,
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image->height,
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stride, WL_SHM_FORMAT_ARGB8888);
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munmap(data, length);
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wl_shm_pool_destroy(pool);
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return buffer;
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}
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// Translates a GLFW standard cursor to a theme cursor name
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//
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static char *translateCursorShape(int shape)
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@@ -783,7 +851,7 @@ void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
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int scaledHeight = height * window->wl.scale;
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window->wl.width = width;
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window->wl.height = height;
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wl_egl_window_resize(window->wl.native, scaledWidth, scaledHeight, 0, 0);
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resizeWindow(window, scaledWidth, scaledHeight);
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if (!window->wl.transparent)
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setOpaqueRegion(window);
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_glfwInputFramebufferSize(window, scaledWidth, scaledHeight);
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