diff options
Diffstat (limited to 'clients/image.c')
| -rw-r--r-- | clients/image.c | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/clients/image.c b/clients/image.c new file mode 100644 index 0000000..3f206fc --- /dev/null +++ b/clients/image.c @@ -0,0 +1,346 @@ +/* + * Copyright © 2008 Kristian Høgsberg + * Copyright © 2009 Chris Wilson + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <fcntl.h> +#include <unistd.h> +#include <math.h> +#include <time.h> +#include <cairo.h> +#include <cairo-drm.h> +#include <glib.h> +#include <gdk-pixbuf/gdk-pixbuf.h> + +#include "wayland-client.h" +#include "wayland-glib.h" + +#include "window.h" + +static const char gem_device[] = "/dev/dri/card0"; +static const char socket_name[] = "\0wayland"; + +struct image { + struct window *window; + struct display *display; + struct wl_compositor *compositor; + uint32_t key; + + gboolean redraw_scheduled; + gboolean redraw_pending; + + cairo_surface_t *surface; + gchar *filename; +}; + +static void +set_source_pixbuf(cairo_t *cr, + const GdkPixbuf *pixbuf, + double src_x, + double src_y, + double src_width, + double src_height) +{ + gint width = gdk_pixbuf_get_width (pixbuf); + gint height = gdk_pixbuf_get_height (pixbuf); + guchar *gdk_pixels = gdk_pixbuf_get_pixels (pixbuf); + int gdk_rowstride = gdk_pixbuf_get_rowstride (pixbuf); + int n_channels = gdk_pixbuf_get_n_channels (pixbuf); + int cairo_stride; + guchar *cairo_pixels; + cairo_format_t format; + cairo_surface_t *surface; + int j; + + if (n_channels == 3) + format = CAIRO_FORMAT_RGB24; + else + format = CAIRO_FORMAT_ARGB32; + + surface = cairo_image_surface_create(format, width, height); + if (cairo_surface_status(surface)) { + cairo_set_source_surface(cr, surface, 0, 0); + return; + } + + cairo_stride = cairo_image_surface_get_stride(surface); + cairo_pixels = cairo_image_surface_get_data(surface); + + for (j = height; j; j--) { + guchar *p = gdk_pixels; + guchar *q = cairo_pixels; + + if (n_channels == 3) { + guchar *end = p + 3 * width; + + while (p < end) { +#if G_BYTE_ORDER == G_LITTLE_ENDIAN + q[0] = p[2]; + q[1] = p[1]; + q[2] = p[0]; +#else + q[1] = p[0]; + q[2] = p[1]; + q[3] = p[2]; +#endif + p += 3; + q += 4; + } + } else { + guchar *end = p + 4 * width; + guint t1,t2,t3; + +#define MULT(d,c,a,t) G_STMT_START { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } G_STMT_END + + while (p < end) { +#if G_BYTE_ORDER == G_LITTLE_ENDIAN + MULT(q[0], p[2], p[3], t1); + MULT(q[1], p[1], p[3], t2); + MULT(q[2], p[0], p[3], t3); + q[3] = p[3]; +#else + q[0] = p[3]; + MULT(q[1], p[0], p[3], t1); + MULT(q[2], p[1], p[3], t2); + MULT(q[3], p[2], p[3], t3); +#endif + + p += 4; + q += 4; + } +#undef MULT + } + + gdk_pixels += gdk_rowstride; + cairo_pixels += cairo_stride; + } + cairo_surface_mark_dirty(surface); + + cairo_set_source_surface(cr, surface, + src_x + .5 * (src_width - width), + src_y + .5 * (src_height - height)); + cairo_surface_destroy(surface); +} + +static void +image_draw(struct image *image) +{ + struct rectangle rectangle; + GdkPixbuf *pb; + cairo_t *cr; + + image->redraw_pending = 0; + + window_draw(image->window); + + window_get_child_rectangle(image->window, &rectangle); + + pb = gdk_pixbuf_new_from_file_at_size(image->filename, + rectangle.width, + rectangle.height, + NULL); + if (pb == NULL) + return; + + image->surface = + window_create_surface(image->window, &rectangle); + + cr = cairo_create(image->surface); + cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); + cairo_set_source_rgba(cr, 0, 0, 0, 1); + cairo_paint(cr); + set_source_pixbuf(cr, pb, + 0, 0, + rectangle.width, rectangle.height); + cairo_set_operator(cr, CAIRO_OPERATOR_OVER); + cairo_paint(cr); + cairo_destroy(cr); + + g_object_unref(pb); + + window_copy_surface(image->window, + &rectangle, + image->surface); + + window_commit(image->window, image->key); +} + +static gboolean +image_idle_redraw(void *data) +{ + struct image *image = data; + + image_draw(image); + + return FALSE; +} + +static void +image_schedule_redraw(struct image *image) +{ + if (!image->redraw_scheduled) { + image->redraw_scheduled = 1; + g_idle_add(image_idle_redraw, image); + } else { + image->redraw_pending = 1; + } +} + +static void +resize_handler(struct window *window, void *data) +{ + struct image *image = data; + + image_schedule_redraw(image); +} + +static void +keyboard_focus_handler(struct window *window, + struct wl_input_device *device, void *data) +{ + struct image *image = data; + + image_schedule_redraw(image); +} + +static void +handle_acknowledge(void *data, + struct wl_compositor *compositor, + uint32_t key, uint32_t frame) +{ + struct image *image = data; + + if (image->key != key) + return; + + cairo_surface_destroy(image->surface); + image->redraw_scheduled = 0; + if (image->redraw_pending) { + image->redraw_pending = 0; + image_schedule_redraw(image); + } +} + +static void +handle_frame(void *data, + struct wl_compositor *compositor, + uint32_t frame, uint32_t timestamp) +{ +} + +static const struct wl_compositor_listener compositor_listener = { + handle_acknowledge, + handle_frame, +}; + +static struct image * +image_create(struct display *display, uint32_t key, const char *filename) +{ + struct image *image; + gchar *basename; + gchar *title; + + image = malloc(sizeof *image); + if (image == NULL) + return image; + memset(image, 0, sizeof *image); + + basename = g_path_get_basename(filename); + title = g_strdup_printf("Wayland Image - %s", basename); + g_free(basename); + + image->filename = g_strdup(filename); + + image->window = window_create(display, title, 100 * key, 100 * key, 500, 400); + image->display = display; + + /* FIXME: Window uses key 1 for moves, need some kind of + * allocation scheme here. Or maybe just a real toolkit. */ + image->key = key + 100; + image->redraw_scheduled = 1; + + image->compositor = display_get_compositor(display); + window_set_resize_handler(image->window, resize_handler, image); + window_set_keyboard_focus_handler(image->window, keyboard_focus_handler, image); + + wl_compositor_add_listener(image->compositor, &compositor_listener, image); + + image_draw(image); + + return image; +} + +static const GOptionEntry option_entries[] = { + { NULL } +}; + +int +main(int argc, char *argv[]) +{ + struct wl_display *display; + int fd; + GMainLoop *loop; + GSource *source; + struct display *d; + GOptionContext *context; + GError *error; + int i; + + context = g_option_context_new(NULL); + g_option_context_add_main_entries(context, option_entries, "Wayland Image"); + if (!g_option_context_parse(context, &argc, &argv, &error)) { + fprintf(stderr, "option parsing failed: %s\n", error->message); + exit(EXIT_FAILURE); + } + + fd = open(gem_device, O_RDWR); + if (fd < 0) { + fprintf(stderr, "drm open failed: %m\n"); + return -1; + } + + display = wl_display_create(socket_name, sizeof socket_name); + if (display == NULL) { + fprintf(stderr, "failed to create display: %m\n"); + return -1; + } + + d = display_create(display, fd); + loop = g_main_loop_new(NULL, FALSE); + source = wl_glib_source_new(display); + g_source_attach(source, NULL); + + g_type_init (); + + for (i = 1; i < argc; i++) { + struct image *image; + + image = image_create (d, i, argv[i]); + } + + g_main_loop_run(loop); + + return 0; +} |