mirrors/wayland
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wayland/wayland.git synced 2025-11-04 13:29:51 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Factor out common cairo code, add blur function.

Browse source
This commit is contained in:
Kristian Høgsberg 2008-11-08 22:46:30 -05:00
parent e4feb56316
commit 2f2cfae227
5 changed files with 244 additions and 170 deletions
Download patch file Download diff file Expand all files Collapse all files

95
pointer.c
View file

@ -2,8 +2,6 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <i915_drm.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <math.h>
@ -13,64 +11,31 @@
#include "wayland-client.h"
#include "wayland-glib.h"
#include "cairo-util.h"
static const char gem_device[] = "/dev/dri/card0";
static const char socket_name[] = "\0wayland";
static uint32_t name_cairo_surface(int fd, cairo_surface_t *surface)
static void
pointer_path(cairo_t *cr, int x, int y)
{
struct drm_i915_gem_create create;
struct drm_gem_flink flink;
struct drm_i915_gem_pwrite pwrite;
int32_t width, height, stride;
void *data;
const int end = 4, tx = 2, ty = 7, dx = 3, dy = 5;
const int width = 16, height = 16;
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);
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;
cairo_move_to(cr, x, y);
cairo_line_to(cr, x + tx, y + ty);
cairo_line_to(cr, x + dx, y + dy);
cairo_line_to(cr, x + width - end, y + height);
cairo_line_to(cr, x + width, y + height - end);
cairo_line_to(cr, x + dy, y + dx);
cairo_line_to(cr, x + ty, y + tx);
cairo_close_path(cr);
}
static void *
draw_pointer(int width, int height)
{
const int d = 2, end = 6, tx = 2, ty = 7, dx = 3, dy = 5;
const int hotspot_x = 16, hotspot_y = 16;
cairo_surface_t *surface;
cairo_t *cr;
@ -78,20 +43,17 @@ draw_pointer(int width, int height)
width, height);
cr = cairo_create(surface);
cairo_set_line_width (cr, d);
cairo_move_to(cr, d, d);
cairo_line_to(cr, d + tx, d + ty);
cairo_line_to(cr, d + dx, d + dy);
cairo_line_to(cr, width - end, height - d);
cairo_line_to(cr, width - d, height - end);
cairo_line_to(cr, d + dy, d + dx);
cairo_line_to(cr, d + ty, d + tx);
cairo_close_path(cr);
pointer_path(cr, hotspot_x + 3, hotspot_y + 2);
cairo_set_line_width (cr, 2);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_stroke_preserve(cr);
cairo_fill(cr);
blur_surface(surface);
pointer_path(cr, hotspot_x, hotspot_y);
cairo_stroke_preserve(cr);
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_fill(cr);
cairo_destroy(cr);
return surface;
@ -118,10 +80,10 @@ int main(int argc, char *argv[])
struct wl_display *display;
struct pointer pointer;
int fd;
uint32_t name;
cairo_surface_t *s;
GMainLoop *loop;
GSource *source;
struct buffer *buffer;
fd = open(gem_device, O_RDWR);
if (fd < 0) {
@ -139,16 +101,15 @@ int main(int argc, char *argv[])
source = wayland_source_new(display);
g_source_attach(source, NULL);
pointer.width = 16;
pointer.height = 16;
pointer.width = 48;
pointer.height = 48;
pointer.surface = wl_display_create_surface(display);
s = draw_pointer(pointer.width, pointer.height);
name = name_cairo_surface(fd, s);
buffer = buffer_create_from_cairo_surface(fd, s);
wl_surface_attach(pointer.surface, name,
pointer.width, pointer.height,
cairo_image_surface_get_stride(s));
wl_surface_attach(pointer.surface, buffer->name,
buffer->width, buffer->height, buffer->stride);
wl_surface_map(pointer.surface, 512, 384, pointer.width, pointer.height);
wl_display_set_event_handler(display, event_handler, &pointer);