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61e3ecec79
These bitmaps should only be used as a source bitmap, we won't support painting into them using Painter. You can however manipulate the raw pixel data. :^)
95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
#include <SharedGraphics/GraphicsBitmap.h>
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#include <SharedGraphics/PNGLoader.h>
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#include <AK/MappedFile.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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Retained<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(nullptr, size_in_bytes(), PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
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ASSERT(m_data && m_data != (void*)-1);
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m_needs_munmap = true;
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set_mmap_name(String::format("GraphicsBitmap [%dx%d]", width(), height()).characters());
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}
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Retained<GraphicsBitmap> GraphicsBitmap::create_wrapper(Format format, const Size& size, RGBA32* data)
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{
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return adopt(*new GraphicsBitmap(format, size, data));
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}
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RetainPtr<GraphicsBitmap> GraphicsBitmap::load_from_file(const String& path)
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{
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return load_png(path);
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}
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RetainPtr<GraphicsBitmap> GraphicsBitmap::load_from_file(Format format, const String& 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, RGBA32* data)
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: m_size(size)
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, m_data(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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{
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ASSERT(format != Format::Indexed8);
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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.pointer())
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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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Retained<GraphicsBitmap> GraphicsBitmap::create_with_shared_buffer(Format format, Retained<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, Retained<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 String& 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(), name.characters());
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}
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