From 61017b190a5c46e052f02a49c094e42316f2e511 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Kristian=20H=C3=B8gsberg?= Date: Sun, 2 Nov 2008 18:51:48 -0500 Subject: [PATCH] Add a window client, first implementation of surface resizing. --- Makefile | 3 +- window.c | 290 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 292 insertions(+), 1 deletion(-) create mode 100644 window.c diff --git a/Makefile b/Makefile index dcb7e5c..a335cb1 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ CFLAGS += -Wall -g $(shell pkg-config --cflags libffi libdrm) LDLIBS += $(shell pkg-config --libs libffi libdrm) -clients = flower pointer background +clients = flower pointer background window all : wayland $(clients) @@ -20,6 +20,7 @@ libwayland.so : $(libwayland_objs) flower_objs = flower.o pointer_objs = pointer.o background_objs = background.o +window_objs = window.o $(clients) : CFLAGS += $(shell pkg-config --cflags cairo) $(clients) : LDLIBS += $(shell pkg-config --libs cairo gdk-pixbuf-2.0) -lrt diff --git a/window.c b/window.c new file mode 100644 index 0000000..ee9de1e --- /dev/null +++ b/window.c @@ -0,0 +1,290 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "wayland-client.h" + +static const char gem_device[] = "/dev/dri/card0"; +static const char socket_name[] = "\0wayland"; + +static void +unpremultiply_data(uint8_t *data, int width, int height, int stride) +{ + unsigned int i, j; + uint8_t *row; + + for (j = 0; j < height; j++) { + row = data + j * stride; + + for (i = 0; i < width; i++) { + uint8_t *b = &row[i * 4]; + uint32_t pixel; + uint8_t alpha; + + memcpy (&pixel, b, sizeof (uint32_t)); + alpha = (pixel & 0xff000000) >> 24; + if (alpha == 0) { + b[0] = b[1] = b[2] = b[3] = 0; + } else { + b[0] = (((pixel & 0xff0000) >> 16) * 255 + alpha / 2) / alpha; + b[1] = (((pixel & 0x00ff00) >> 8) * 255 + alpha / 2) / alpha; + b[2] = (((pixel & 0x0000ff) >> 0) * 255 + alpha / 2) / alpha; + b[3] = alpha; + } + } + } +} + +static uint32_t name_cairo_surface(int fd, cairo_surface_t *surface) +{ + struct drm_i915_gem_create create; + struct drm_gem_flink flink; + struct drm_i915_gem_pwrite pwrite; + int32_t width, height, stride; + void *data; + + width = cairo_image_surface_get_width(surface); + height = cairo_image_surface_get_height(surface); + stride = cairo_image_surface_get_stride(surface); + data = cairo_image_surface_get_data(surface); + + unpremultiply_data(data, width, height, stride); + + memset(&create, 0, sizeof(create)); + create.size = height * stride; + + if (ioctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create) != 0) { + fprintf(stderr, "gem create failed: %m\n"); + return 0; + } + + pwrite.handle = create.handle; + pwrite.offset = 0; + pwrite.size = height * stride; + pwrite.data_ptr = (uint64_t) (uintptr_t) data; + if (ioctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite) < 0) { + fprintf(stderr, "gem pwrite failed: %m\n"); + return 0; + } + + flink.handle = create.handle; + if (ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink) != 0) { + fprintf(stderr, "gem flink failed: %m\n"); + return 0; + } + +#if 0 + /* We need to hold on to the handle until the server has received + * the attach request... we probably need a confirmation event. + * I guess the breadcrumb idea will suffice. */ + struct drm_gem_close close; + close.handle = create.handle; + if (ioctl(fd, DRM_IOCTL_GEM_CLOSE, &close) < 0) { + fprintf(stderr, "gem close failed: %m\n"); + return 0; + } +#endif + + return flink.name; +} + +struct window { + struct wl_surface *surface; + int x, y, width, height, stride; + int drag_x, drag_y, last_x, last_y; + int state; + uint32_t name; + int fd; +}; + +static void * +draw_window(struct window *window) +{ + cairo_surface_t *surface; + cairo_t *cr; + int border = 4; + int half = (border + 1) / 2; + + surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, + window->width, + window->height); + + cr = cairo_create(surface); + cairo_set_line_width (cr, border); + cairo_move_to(cr, half, half); + cairo_line_to(cr, window->width - half, half); + cairo_line_to(cr, window->width - half, + window->height - half); + cairo_line_to(cr, half, window->height - half); + cairo_close_path(cr); + cairo_set_source_rgba(cr, 0, 0, 0, 0.85); + cairo_fill_preserve(cr); + cairo_set_source_rgba(cr, 0, 0, 0, 1); + cairo_stroke(cr); + cairo_destroy(cr); + + window->stride = cairo_image_surface_get_stride(surface); + + window->name = name_cairo_surface(window->fd, surface); + cairo_surface_destroy(surface); + + wl_surface_attach(window->surface, window->name, + window->width, window->height, window->stride); + + wl_surface_map(window->surface, + window->x, window->y, + window->width, window->height); + + return surface; +} + +static int +connection_update(struct wl_connection *connection, + uint32_t mask, void *data) +{ + struct pollfd *p = data; + + p->events = 0; + if (mask & WL_CONNECTION_READABLE) + p->events |= POLLIN; + if (mask & WL_CONNECTION_WRITABLE) + p->events |= POLLOUT; + + return 0; +} + +enum window_state { + WINDOW_STABLE, + WINDOW_MOVING, + WINDOW_RESIZING_UPPER_LEFT, + WINDOW_RESIZING_UPPER_RIGHT, + WINDOW_RESIZING_LOWER_LEFT, + WINDOW_RESIZING_LOWER_RIGHT +}; + +enum location { + LOCATION_INTERIOR, + LOCATION_UPPER_LEFT, + LOCATION_UPPER_RIGHT, + LOCATION_LOWER_LEFT, + LOCATION_LOWER_RIGHT, + LOCATION_OUTSIDE +}; + +void event_handler(struct wl_display *display, + uint32_t opcode, + uint32_t arg1, uint32_t arg2, void *data) +{ + struct window *window = data; + int location, border = 4; + int grip_size = 16; + + if (opcode == 0) { + window->last_x = arg1; + window->last_y = arg2; + switch (window->state) { + case WINDOW_MOVING: + window->x = window->drag_x + arg1; + window->y = window->drag_y + arg2; + wl_surface_map(window->surface, window->x, window->y, + window->width, window->height); + break; + case WINDOW_RESIZING_LOWER_RIGHT: + window->width = window->drag_x + arg1; + window->height = window->drag_y + arg2; + draw_window(window); + break; + } + } + + if (window->x + border <= window->last_x && + window->last_x < window->x + window->width - border && + window->y + border <= window->last_y && + window->last_y < window->y + window->height - border) { + location = LOCATION_INTERIOR; + } else if (window->x + window->width - grip_size <= window->last_x && + window->last_x < window->x + window->width && + window->y + window->height - grip_size <= window->last_y && + window->last_y < window->y + window->height) { + location = LOCATION_LOWER_RIGHT; + } else { + location = LOCATION_OUTSIDE; + } + + if (opcode == 1 && arg1 == 0 && arg2 == 1) { + switch (location) { + case LOCATION_INTERIOR: + window->drag_x = window->x - window->last_x; + window->drag_y = window->y - window->last_y; + window->state = WINDOW_MOVING; + break; + case LOCATION_LOWER_RIGHT: + window->drag_x = window->width - window->last_x; + window->drag_y = window->height - window->last_y; + window->state = WINDOW_RESIZING_LOWER_RIGHT; + break; + default: + window->state = WINDOW_STABLE; + break; + } + } else if (opcode == 1 && arg1 == 0 && arg2 == 0) { + window->state = WINDOW_STABLE; + } +} + +int main(int argc, char *argv[]) +{ + struct wl_display *display; + int fd, ret; + uint32_t mask; + cairo_surface_t *s; + struct pollfd p[1]; + struct window window; + + fd = open(gem_device, O_RDWR); + if (fd < 0) { + fprintf(stderr, "drm open failed: %m\n"); + return -1; + } + + display = wl_display_create(socket_name, + connection_update, &p[0]); + if (display == NULL) { + fprintf(stderr, "failed to create display: %m\n"); + return -1; + } + p[0].fd = wl_display_get_fd(display); + + window.surface = wl_display_create_surface(display); + window.x = 200; + window.y = 200; + window.width = 350; + window.height = 200; + window.state = WINDOW_STABLE; + window.fd = fd; + + s = draw_window(&window); + + wl_display_set_event_handler(display, event_handler, &window); + + while (ret = poll(p, 1, -1), ret >= 0) { + mask = 0; + if (p[0].revents & POLLIN) + mask |= WL_CONNECTION_READABLE; + if (p[0].revents & POLLOUT) + mask |= WL_CONNECTION_WRITABLE; + if (mask) + wl_display_iterate(display, mask); + } + + return 0; +} -- 2.7.4