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/* Copyright (C) 2006 Evan Martin <martine@danga.com> */
#include <stdio.h>
#include <stdlib.h>
#include <glib.h>
#include <aosd.h>
#define MARGIN 10
#define RADIUS 20
#define WIDTH 185
#define HEIGHT 220
struct
{
gboolean transparent;
int pos;
int x, y;
int alpha;
char* filename;
} opts =
{
TRUE,
4,
0, 0,
50,
NULL
};
static void
round_rect(cairo_t* cr, int x, int y, int w, int h, int r)
{
cairo_move_to(cr, x+r, y);
cairo_line_to(cr, x+w-r, y); /* top edge */
cairo_curve_to(cr, x+w, y, x+w, y, x+w, y+r);
cairo_line_to(cr, x+w, y+h-r); /* right edge */
cairo_curve_to(cr, x+w, y+h, x+w, y+h, x+w-r, y+h);
cairo_line_to(cr, x+r, y+h); /* bottom edge */
cairo_curve_to(cr, x, y+h, x, y+h, x, y+h-r);
cairo_line_to(cr, x, y+r); /* left edge */
cairo_curve_to(cr, x, y, x, y, x+r, y);
}
static void
render(cairo_t* cr, void* data)
{
cairo_surface_t* image = data;
const int width = cairo_image_surface_get_width(image);
const int height = cairo_image_surface_get_height(image);
cairo_set_source_rgba(cr, 0, 0, 0, 0);
cairo_new_path(cr);
round_rect(cr, 0, 0, width + (2 * MARGIN), height + (2 * MARGIN), RADIUS);
cairo_close_path(cr);
cairo_fill(cr);
cairo_save(cr);
cairo_set_source_surface(cr, image, MARGIN, MARGIN);
cairo_paint_with_alpha(cr, opts.alpha / (float)100);
cairo_restore(cr);
}
static gboolean
parse_options(int* argc, char** argv[])
{
GOptionContext* ctx;
GOptionGroup* group;
gboolean ret;
GOptionEntry display[] =
{
{ "opaque", 'o', G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE,
(gpointer)&opts.transparent, "turn off transparent background" },
{ "alpha", 'a', 0, G_OPTION_ARG_INT,
(gpointer)&opts.alpha, "alpha level of a displayed image (0:100)" },
{ NULL }
};
GOptionEntry coords[] =
{
{ "position", 'p', 0, G_OPTION_ARG_INT,
(gpointer)&opts.pos, "window position (0:8)"},
{ "x", 'x', G_OPTION_FLAG_NOALIAS, G_OPTION_ARG_INT,
(gpointer)&opts.x, "x offset coordinate for window" },
{ "y", 'y', G_OPTION_FLAG_NOALIAS, G_OPTION_ARG_INT,
(gpointer)&opts.y, "y offset coordinate for window" },
{ NULL }
};
GOptionEntry image[] =
{
{ "image", 'i', G_OPTION_FLAG_FILENAME, G_OPTION_ARG_FILENAME,
(gpointer)&opts.filename, "image to display", "PATH" },
{ NULL }
};
ctx = g_option_context_new("");
g_option_context_set_ignore_unknown_options(ctx, FALSE);
#define ADD_GROUP(name, desc, help, entries, main) \
group = g_option_group_new((name), (desc), (help), NULL, NULL); \
g_option_group_add_entries(group, (entries)); \
if ((main)) \
g_option_context_set_main_group(ctx, group); \
else \
g_option_context_add_group(ctx, group);
ADD_GROUP("display", "Display Options:", "Show display help options", display, FALSE);
ADD_GROUP("coords", "Position Options:", "Show position help options", coords, FALSE);
ADD_GROUP("image", "Image Options:", "Show image help options", image, TRUE);
#undef ADD_GROUP
ret = g_option_context_parse(ctx, argc, argv, NULL);
g_option_context_free(ctx);
if (ret == FALSE ||
opts.filename == NULL)
return FALSE;
if (opts.pos < 0 ||
opts.pos > 8)
opts.pos = 4;
if (opts.alpha < 0)
opts.alpha = 0;
if (opts.alpha > 100)
opts.alpha = 100;
return TRUE;
}
int
main(int argc, char* argv[])
{
if (parse_options(&argc, &argv) == FALSE)
{
fprintf(stderr, "Error parsing options, try --help.\n");
return 1;
}
Aosd* aosd;
cairo_surface_t* image = cairo_image_surface_create_from_png(opts.filename);
const int width = cairo_image_surface_get_width(image);
const int height = cairo_image_surface_get_height(image);
aosd = aosd_new();
aosd_set_transparency(aosd,
opts.transparent ? TRANSPARENCY_COMPOSITE : TRANSPARENCY_NONE);
aosd_set_position(aosd, opts.pos, width + 2 * MARGIN, height + 2 * MARGIN);
aosd_set_position_offset(aosd, opts.x, opts.y);
aosd_set_renderer(aosd, render, image);
aosd_flash(aosd, 300, 3000, 300);
cairo_surface_destroy(image);
aosd_destroy(aosd);
return 0;
}
/* vim: set ts=2 sw=2 et : */
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