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Implement OS::set_icon in HTML5 platform

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This commit is contained in:
Leon Krause 2018-09-16 19:37:36 +02:00
parent 2cf024ed91
commit 42c6a67dca
2 changed files with 53 additions and 0 deletions
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52
platform/javascript/os_javascript.cpp
View file

@ -39,6 +39,7 @@
#include "unix/file_access_unix.h"
#include <emscripten.h>
#include <png.h>
#include <stdlib.h>
#include "dom_keys.inc"
@ -912,6 +913,57 @@ void OS_JavaScript::set_window_title(const String &p_title) {
/* clang-format on */
}
void OS_JavaScript::set_icon(const Ref<Image> &p_icon) {
ERR_FAIL_COND(p_icon.is_null());
Ref<Image> icon = p_icon;
if (icon->is_compressed()) {
icon = icon->duplicate();
ERR_FAIL_COND(icon->decompress() != OK)
}
if (icon->get_format() != Image::FORMAT_RGBA8) {
if (icon == p_icon)
icon = icon->duplicate();
icon->convert(Image::FORMAT_RGBA8);
}
png_image png_meta;
memset(&png_meta, 0, sizeof png_meta);
png_meta.version = PNG_IMAGE_VERSION;
png_meta.width = icon->get_width();
png_meta.height = icon->get_height();
png_meta.format = PNG_FORMAT_RGBA;
PoolByteArray png;
size_t len;
PoolByteArray::Read r = icon->get_data().read();
ERR_FAIL_COND(!png_image_write_get_memory_size(png_meta, len, 0, r.ptr(), 0, NULL));
png.resize(len);
PoolByteArray::Write w = png.write();
ERR_FAIL_COND(!png_image_write_to_memory(&png_meta, w.ptr(), &len, 0, r.ptr(), 0, NULL));
w = PoolByteArray::Write();
r = png.read();
/* clang-format off */
EM_ASM_ARGS({
var PNG_PTR = $0;
var PNG_LEN = $1;
var png = new Blob([HEAPU8.slice(PNG_PTR, PNG_PTR + PNG_LEN)], { type: "image/png" });
var url = URL.createObjectURL(png);
var link = document.getElementById('-gd-engine-icon');
if (link === null) {
link = document.createElement('link');
link.rel = 'icon';
link.id = '-gd-engine-icon';
document.head.appendChild(link);
}
link.href = url;
}, r.ptr(), len);
/* clang-format on */
}
String OS_JavaScript::get_executable_path() const {
return OS::get_executable_path();

1
platform/javascript/os_javascript.h
View file

@ -135,6 +135,7 @@ public:
virtual void alert(const String &p_alert, const String &p_title = "ALERT!");
virtual void set_window_title(const String &p_title);
virtual void set_icon(const Ref<Image> &p_icon);
String get_executable_path() const;
virtual Error shell_open(String p_uri);
virtual String get_name();