JS_EXPORT_API
void dock_draw_window_preview(JSValueRef canvas, double xid, double dest_width, double dest_height)
{
GdkWindow* win = gdk_x11_window_foreign_new_for_display(gdk_display_get_default(), (long)xid);
if (win == NULL) {
return;
}
if (JSValueIsNull(get_global_context(), canvas)) {
g_debug("draw_window_preview with null canvas!");
return;
}
cairo_t* cr = fetch_cairo_from_html_canvas(get_global_context(), canvas);
if (cr == NULL) {
return;
}
cairo_save(cr);
//clear preview content to prevent translucency window problem
cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
cairo_paint(cr);
cairo_restore(cr);
int width = gdk_window_get_width(win);
int height = gdk_window_get_height(win);
cairo_save(cr);
double scale = 0;
if (width > height) {
scale = dest_width/width;
cairo_scale(cr, scale, scale);
gdk_cairo_set_source_window(cr, win, 0, 0.5*(dest_height/scale-height));
} else {
scale = dest_height/height;
cairo_scale(cr, scale, scale);
gdk_cairo_set_source_window(cr, win, 0.5*(dest_width/scale-width), 0);
}
cairo_paint(cr);
cairo_restore(cr);
canvas_custom_draw_did(cr, NULL);
}
JS_EXPORT_API
void dominantcolor_draw1(JSValueRef canvas, const char* path, double size, JSData* data)
{
if (_mask && _board) {
cairo_t* cr = fetch_cairo_from_html_canvas(data->ctx, canvas);
GdkPixbuf* pixbuf = gdk_pixbuf_new_from_file_at_size(path, size, size, NULL);
if (pixbuf) {
double r, g, b;
calc_dominant_color_by_path(path, &r, &g, &b, clamp1);
cairo_save(cr);
cairo_scale(cr, _board_scale, _board_scale);
draw_board(cr, _board, _mask, r, g, b);
cairo_restore(cr);
gdk_cairo_set_source_pixbuf(cr, pixbuf, 4, 4);
cairo_paint(cr);
g_object_unref(pixbuf);
}
canvas_custom_draw_did(cr, NULL);
}
}
void _draw(JSValueRef canvas, double dest_width, double dest_height)
{
static gboolean not_draw = FALSE;
if (recognition_info.reco_state == RECOGNIZING) {
/* g_debug("[%s] recognizing", __func__); */
return;
}
if (!recognition_info.has_data) {
g_debug("[%s] get no data from camera", __func__);
return;
}
if (JSValueIsNull(get_global_context(), canvas)) {
g_debug("[%s] draw with null canvas!", __func__);
return;
}
if (recognition_info.source_data == NULL) {
g_debug("[%s] source_data is null", __func__);
return;
}
g_debug("[%s]", __func__);
cairo_t* cr = fetch_cairo_from_html_canvas(get_global_context(), canvas);
g_assert(cr != NULL);
cairo_save(cr);
gulong len = recognition_info.length;
guchar* data = g_slice_copy(len, recognition_info.source_data);
GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data(data,
GDK_COLORSPACE_RGB, // color space
FALSE, // has alpha
8, // bits per sample
CAMERA_WIDTH, // width
CAMERA_HEIGHT, // height
3*CAMERA_WIDTH, // row stride
destroy_pixels, // destroy function
GINT_TO_POINTER(len) // destroy function data
);
double scale = 0;
if (CAMERA_WIDTH > CAMERA_HEIGHT) {
scale = dest_height/CAMERA_HEIGHT;
cairo_scale(cr, scale, scale);
gdk_cairo_set_source_pixbuf(cr, pixbuf, 0.5 * (dest_width / scale -
CAMERA_WIDTH), 0);
} else {
scale = dest_width/CAMERA_WIDTH;
cairo_scale(cr, scale, scale);
gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0.5 * (dest_height / scale -
CAMERA_HEIGHT));
}
cairo_paint(cr);
cairo_restore(cr);
canvas_custom_draw_did(cr, NULL);
g_object_unref(pixbuf);
recognition_info.has_data = FALSE;
}
