language-servers/slint
1
0
Fork 0
mirror of https://github.com/slint-ui/slint.git synced 2025-10-21 15:52:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

WIP: Start wrapping TargetPIxelBuffer in C++

Browse source
This commit is contained in:
Simon Hausmann 2025-02-06 20:04:28 +01:00 • committed by Simon Hausmann
parent 543ed39058
commit fbee7f9566
3 changed files with 228 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

77
api/cpp/include/slint-platform.h
View file

@ -538,6 +538,20 @@ struct Rgb565Pixel
friend bool operator==(const Rgb565Pixel &lhs, const Rgb565Pixel &rhs) = default;
};
# ifdef SLINT_FEATURE_EXPERIMENTAL
template<typename PixelType>
struct TargetPixelBuffer
{
virtual ~TargetPixelBuffer() { }
virtual std::span<PixelType> line_slice(std::size_t line_number) = 0;
virtual std::size_t num_lines() = 0;
virtual bool fill_rectangle(int16_t x, int16_t y, int16_t width, int16_t height,
const RgbaColor<uint8_t> &premultiplied_color) = 0;
};
# endif
/// Slint's software renderer.
///
/// To be used as a template parameter of the WindowAdapter.
@ -680,6 +694,69 @@ public:
return PhysicalRegion { r };
}
# ifdef SLINT_FEATURE_EXPERIMENTAL
PhysicalRegion render(TargetPixelBuffer<Rgb8Pixel> *buffer) const
{
cbindgen_private::CppRgb8TargetPixelBuffer buffer_wrapper {
.user_data = buffer,
.line_slice =
[](void *self, uintptr_t line_number, Rgb8Pixel **slice_ptr,
uintptr_t *slice_len) {
auto *buffer = reinterpret_cast<TargetPixelBuffer<Rgb8Pixel> *>(self);
auto slice = buffer->line_slice(line_number);
*slice_ptr = slice.data();
*slice_len = slice.size();
},
.num_lines =
[](void *self) {
auto *buffer = reinterpret_cast<TargetPixelBuffer<Rgb8Pixel> *>(self);
return buffer->num_lines();
},
.fill_rectangle =
[](void *self, int16_t x, int16_t y, int16_t width, int16_t height, uint8_t red,
uint8_t green, uint8_t blue, uint8_t alpha) {
auto *buffer = reinterpret_cast<TargetPixelBuffer<Rgb8Pixel> *>(self);
return buffer->fill_rectangle(
x, y, width, height,
Color::from_argb_uint8(alpha, red, green, blue));
}
};
auto r =
cbindgen_private::slint_software_renderer_render_accel_rgb8(inner, &buffer_wrapper);
return PhysicalRegion { r };
}
PhysicalRegion render(TargetPixelBuffer<Rgb565Pixel> *buffer) const
{
cbindgen_private::CppRgb565TargetPixelBuffer buffer_wrapper {
.user_data = buffer,
.line_slice =
[](void *self, uintptr_t line_number, uint16_t **slice_ptr,
uintptr_t *slice_len) {
auto *buffer = reinterpret_cast<TargetPixelBuffer<Rgb565Pixel> *>(self);
auto slice = buffer->line_slice(line_number);
*slice_ptr = reinterpret_cast<uint16_t *>(slice.data());
*slice_len = slice.size();
},
.num_lines =
[](void *self) {
auto *buffer = reinterpret_cast<TargetPixelBuffer<Rgb565Pixel> *>(self);
return buffer->num_lines();
},
.fill_rectangle =
[](void *self, int16_t x, int16_t y, int16_t width, int16_t height, uint8_t red,
uint8_t green, uint8_t blue, uint8_t alpha) {
auto *buffer = reinterpret_cast<TargetPixelBuffer<Rgb565Pixel> *>(self);
return buffer->fill_rectangle(
x, y, width, height,
Color::from_argb_uint8(alpha, red, green, blue));
}
};
auto r = cbindgen_private::slint_software_renderer_render_accel_rgb565(inner,
&buffer_wrapper);
return PhysicalRegion { r };
}
# endif
/// Render the window scene into an RGB 565 encoded pixel buffer
///
/// The buffer must be at least as large as the associated slint::Window