mirror of
https://github.com/RGBCube/serenity
synced 2025-10-30 18:12:45 +00:00
103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
#include <AK/MappedFile.h>
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#include <LibDraw/GraphicsBitmap.h>
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#include <LibDraw/PNGLoader.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <sys/mman.h>
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#include <unistd.h>
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NonnullRefPtr<GraphicsBitmap> GraphicsBitmap::create(Format format, const Size& size)
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{
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return adopt(*new GraphicsBitmap(format, size));
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}
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GraphicsBitmap::GraphicsBitmap(Format format, const Size& size)
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: m_size(size)
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, m_pitch(round_up_to_power_of_two(size.width() * sizeof(RGBA32), 16))
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, m_format(format)
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{
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if (format == Format::Indexed8)
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m_palette = new RGBA32[256];
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m_data = (RGBA32*)mmap_with_name(nullptr, size_in_bytes(), PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0, String::format("GraphicsBitmap [%dx%d]", width(), height()).characters());
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ASSERT(m_data && m_data != (void*)-1);
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m_needs_munmap = true;
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}
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NonnullRefPtr<GraphicsBitmap> GraphicsBitmap::create_wrapper(Format format, const Size& size, size_t pitch, RGBA32* data)
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{
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return adopt(*new GraphicsBitmap(format, size, pitch, data));
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}
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RefPtr<GraphicsBitmap> GraphicsBitmap::load_from_file(const StringView& path)
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{
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return load_png(path);
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}
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RefPtr<GraphicsBitmap> GraphicsBitmap::load_from_file(Format format, const StringView& path, const Size& size)
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{
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MappedFile mapped_file(path);
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if (!mapped_file.is_valid())
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return nullptr;
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return adopt(*new GraphicsBitmap(format, size, move(mapped_file)));
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}
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GraphicsBitmap::GraphicsBitmap(Format format, const Size& size, size_t pitch, RGBA32* data)
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: m_size(size)
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, m_data(data)
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, m_pitch(pitch)
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, m_format(format)
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{
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if (format == Format::Indexed8)
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m_palette = new RGBA32[256];
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}
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GraphicsBitmap::GraphicsBitmap(Format format, const Size& size, MappedFile&& mapped_file)
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: m_size(size)
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, m_data((RGBA32*)mapped_file.data())
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, m_pitch(round_up_to_power_of_two(size.width() * sizeof(RGBA32), 16))
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, m_format(format)
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, m_mapped_file(move(mapped_file))
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{
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ASSERT(format != Format::Indexed8);
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}
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NonnullRefPtr<GraphicsBitmap> GraphicsBitmap::create_with_shared_buffer(Format format, NonnullRefPtr<SharedBuffer>&& shared_buffer, const Size& size)
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{
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return adopt(*new GraphicsBitmap(format, move(shared_buffer), size));
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}
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GraphicsBitmap::GraphicsBitmap(Format format, NonnullRefPtr<SharedBuffer>&& shared_buffer, const Size& size)
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: m_size(size)
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, m_data((RGBA32*)shared_buffer->data())
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, m_pitch(round_up_to_power_of_two(size.width() * sizeof(RGBA32), 16))
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, m_format(format)
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, m_shared_buffer(move(shared_buffer))
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{
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ASSERT(format != Format::Indexed8);
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}
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GraphicsBitmap::~GraphicsBitmap()
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{
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if (m_needs_munmap) {
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int rc = munmap(m_data, size_in_bytes());
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ASSERT(rc == 0);
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}
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m_data = nullptr;
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delete[] m_palette;
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}
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void GraphicsBitmap::set_mmap_name(const StringView& name)
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{
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ASSERT(m_needs_munmap);
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::set_mmap_name(m_data, size_in_bytes(), String(name).characters());
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}
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void GraphicsBitmap::fill(Color color)
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{
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ASSERT(m_format == GraphicsBitmap::Format::RGB32 || m_format == GraphicsBitmap::Format::RGBA32);
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for (int y = 0; y < height(); ++y) {
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auto* scanline = this->scanline(y);
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fast_u32_fill(scanline, color.value(), width());
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}
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}
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