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/*
* Copyright © 2021 Keith Packard
*
* 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 "Xkw.h"
#include "cards-svg.h"
static Dimension icon_sizes[] = {32, 64, 128};
#define NUM_SIZES (sizeof(icon_sizes)/sizeof(icon_sizes[0]))
static unsigned long *
XkwIconValue(unsigned long *total_sizep, const char *svg)
{
unsigned long *value = NULL;
unsigned long *pixels;
unsigned long total_size;
int i;
int x, y;
RsvgHandle *svg_handle = NULL;
svg_handle = XkwRsvgCreate(svg);
if (!svg_handle)
return NULL;
total_size = 0;
for (i = 0; i < (int) NUM_SIZES; i++) {
total_size += 2; /* width/height */
total_size += icon_sizes[i] * icon_sizes[i]; /* pixels */
}
value = calloc(total_size, sizeof(unsigned long));
if (!value)
return NULL;
pixels = value;
for (i = 0; i < (int) NUM_SIZES; i++) {
Dimension width = icon_sizes[i];
Dimension height = icon_sizes[i];
*pixels++ = width;
*pixels++ = height;
uint32_t stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
unsigned char *surface_data = calloc(stride, height);
if (!surface_data)
goto bail;
cairo_surface_t *surface = cairo_image_surface_create_for_data(surface_data,
CAIRO_FORMAT_ARGB32,
width, height,
cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width));
if (!surface) {
free(surface_data);
goto bail;
}
cairo_t *cr = cairo_create(surface);
if (!cr) {
free(surface_data);
cairo_surface_destroy(surface);
goto bail;
}
XkwRsvgDraw(cr, width, height, svg_handle);
cairo_destroy(cr);
cairo_surface_destroy(surface);
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
uint8_t a, r, g, b;
a = surface_data[y * stride + x * 4 + 3];
r = surface_data[y * stride + x * 4 + 2];
g = surface_data[y * stride + x * 4 + 1];
b = surface_data[y * stride + x * 4 + 0];
uint32_t pixel = (a << 24) | (r << 16) | (g << 8) | (b);
pixels[y * width + x] = pixel;
}
}
free(surface_data);
pixels += width * height;
}
XkwRsvgDestroy(svg_handle);
*total_sizep = total_size;
return value;
bail:
if (value)
free(value);
if (svg_handle)
XkwRsvgDestroy(svg_handle);
return NULL;
}
void
XkwSetIcon(Widget toplevel, const char *svg)
{
unsigned long *value;
unsigned long size;
Atom _net_wm_icon = XInternAtom(XtDisplay(toplevel),
"_NET_WM_ICON", FALSE);
value = XkwIconValue(&size, svg);
if (value) {
XChangeProperty(XtDisplay(toplevel), XtWindow(toplevel),
_net_wm_icon, XA_CARDINAL, 32,
PropModeReplace, (unsigned char *) value, (int) size);
free(value);
}
}
void
XkwSetCardIcon(Widget toplevel)
{
XkwSetIcon(toplevel, svg_card_game);
}
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