ladybird/Libraries/LibDraw/Emoji.cpp
Andreas Kling 0d8aaaaa44 LibDraw: Store emojis in a HashMap<u32, RefPtr<GraphicsBitmap>>
Get rid of the dedicated Emoji class to make it easier to store a null
value signifying a failed lookup.

This allows us to remember failed lookups, making subsequent failures
for the same codepoint much faster. :^)
2019-10-19 18:36:45 +02:00

25 lines
618 B
C++

#include <AK/HashMap.h>
#include <AK/String.h>
#include <LibDraw/Emoji.h>
#include <LibDraw/GraphicsBitmap.h>
static HashMap<u32, RefPtr<GraphicsBitmap>> s_emojis;
const GraphicsBitmap* Emoji::emoji_for_codepoint(u32 codepoint)
{
auto it = s_emojis.find(codepoint);
if (it != s_emojis.end())
return (*it).value.ptr();
String path = String::format("/res/emoji/U+%X.png", codepoint);
auto bitmap = GraphicsBitmap::load_from_file(path);
if (!bitmap) {
s_emojis.set(codepoint, nullptr);
return nullptr;
}
s_emojis.set(codepoint, bitmap);
return bitmap.ptr();
}