xtooltip_private.c

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/*
 *                           0BSD 
 * 
 *                    BSD Zero Clause License
 * 
 *  Copyright (c) 2019 Hermann Meyer
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted.
 
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 * 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 "xtooltip_private.h"
 
 
void _get_width(Widget_t *w) {
    cairo_text_extents_t extents;
    cairo_set_font_size (w->crb, 12);
    cairo_text_extents(w->crb,w->label , &extents);
    XResizeWindow (w->app->dpy, w->widget, max(1, (int)extents.width+40), 25);    
}
 
void _draw_tooltip(void *w_, void* user_data) {
    Widget_t *w = (Widget_t*)w_;
    if (!w) return;
    XWindowAttributes attrs;
    XGetWindowAttributes(w->app->dpy, (Window)w->widget, &attrs);
    if (attrs.map_state != IsViewable) return;
    int width = attrs.width;
    int height = attrs.height;
    use_bg_color_scheme(w, get_color_state(w));
    cairo_paint (w->crb);
    cairo_text_extents_t extents;
    /** show label **/
    use_text_color_scheme(w, get_color_state(w));
    cairo_set_font_size (w->crb, w->app->normal_font/w->scale.ascale);
    cairo_text_extents(w->crb,w->label , &extents);
 
    cairo_move_to (w->crb, (width-extents.width)/2., height+5 - extents.height );
    cairo_show_text(w->crb, w->label);
    
}