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WindowServer: Load multiple scaled versions of Bitmaps and Cursors

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This enables rendering of mixed-scale screen layouts with e.g. high
resolution cursors and window button icons on high-dpi screens while
using lower resolution bitmaps on regular screens.
This commit is contained in:
Tom 2021-06-18 19:21:30 -06:00 • committed by Andreas Kling
parent aa15bf81e4
commit 61af9d882e
15 changed files with 269 additions and 99 deletions
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32
Userland/Services/WindowServer/Cursor.h
View file

@ -6,12 +6,15 @@
#pragma once
#include <AK/HashMap.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/StandardCursor.h>
namespace WindowServer {
class CursorParams {
friend class Cursor;
public:
static CursorParams parse_from_filename(const StringView&, const Gfx::IntPoint&);
CursorParams(const Gfx::IntPoint& hotspot)
@ -34,13 +37,27 @@ private:
class Cursor : public RefCounted<Cursor> {
public:
static NonnullRefPtr<Cursor> create(NonnullRefPtr<Gfx::Bitmap>&&, const StringView&);
static NonnullRefPtr<Cursor> create(NonnullRefPtr<Gfx::Bitmap>&&);
static RefPtr<Cursor> create(const StringView&, const StringView&);
static NonnullRefPtr<Cursor> create(NonnullRefPtr<Gfx::Bitmap>&&, int);
static RefPtr<Cursor> create(Gfx::StandardCursor);
~Cursor();
~Cursor() = default;
const CursorParams& params() const { return m_params; }
const Gfx::Bitmap& bitmap() const { return *m_bitmap; }
const Gfx::Bitmap& bitmap(int scale_factor) const
{
auto it = m_bitmaps.find(scale_factor);
if (it == m_bitmaps.end()) {
it = m_bitmaps.find(1);
if (it == m_bitmaps.end())
it = m_bitmaps.begin();
}
// We better found something
if (it == m_bitmaps.end()) {
dbgln("Could not find any bitmap in this Cursor");
VERIFY_NOT_REACHED();
}
return it->value;
}
Gfx::IntRect source_rect(unsigned frame) const
{
@ -51,9 +68,12 @@ public:
Gfx::IntSize size() const { return m_rect.size(); }
private:
Cursor(NonnullRefPtr<Gfx::Bitmap>&&, const CursorParams&);
Cursor() { }
Cursor(NonnullRefPtr<Gfx::Bitmap>&&, int, const CursorParams&);
RefPtr<Gfx::Bitmap> m_bitmap;
bool load(const StringView&, const StringView&);
HashMap<int, NonnullRefPtr<Gfx::Bitmap>> m_bitmaps;
CursorParams m_params;
Gfx::IntRect m_rect;
};