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swrenderer: interface for hw rendering of rectangle with border or gradients (#8384)

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Olivier Goffart 2025-05-06 15:53:53 +02:00 • committed by GitHub
parent c07c0840f6
commit e42c4b18c2
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5 changed files with 406 additions and 351 deletions
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33
api/cpp/include/slint-platform.h
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@ -665,6 +665,8 @@ public:
/// Representation of a texture to blend in the destination buffer.
// (FIXME: this is currently opaque, but should be exposed)
using DrawTextureArgs = cbindgen_private::DrawTextureArgs;
/// Arguments for draw_rectagle
using DrawRectangleArgs = cbindgen_private::DrawRectangleArgs;
/// Abstract base class for a target pixel buffer where certain drawing operations can be
/// delegated. Use this to implement support for hardware accelerators such as DMA2D, PPA, or
@ -693,7 +695,14 @@ public:
/// Each pixel of the texture is to be blended with the given colorize color as well as the
/// alpha value.
// FIXME: Texture is currently opaque, but should be exposed
virtual bool draw_texture(const DrawTextureArgs *texture, const PhysicalRegion &clip) = 0;
virtual bool draw_texture(const DrawTextureArgs &texture, const PhysicalRegion &clip) = 0;
/// Fill the background of the buffer with the given brush.
virtual bool fill_background(const Brush &brush, const PhysicalRegion &clip) = 0;
/// Draw a rectangle specified by the DrawRectangleArgs. That rectangle must be clipped to
/// the given region.
virtual bool draw_rectangle(const DrawRectangleArgs &args, const PhysicalRegion &clip) = 0;
private:
friend class SoftwareRenderer;
@ -714,22 +723,26 @@ public:
auto *buffer = reinterpret_cast<TargetPixelBuffer<PixelType> *>(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,
CompositionMode composition_mode) {
.fill_background =
[](void *self, const Brush *brush,
const cbindgen_private::PhysicalRegion *clip) {
auto *buffer = reinterpret_cast<TargetPixelBuffer<PixelType> *>(self);
return buffer->fill_rectangle(
x, y, width, height,
Color::from_argb_uint8(alpha, red, green, blue),
composition_mode);
auto clip_region = PhysicalRegion { *clip };
return buffer->fill_background(*brush, clip_region);
},
.draw_rectangle =
[](void *self, const cbindgen_private::DrawRectangleArgs *args,
const cbindgen_private::PhysicalRegion *clip) {
auto *buffer = reinterpret_cast<TargetPixelBuffer<PixelType> *>(self);
auto clip_region = PhysicalRegion { *clip };
return buffer->draw_rectangle(*args, clip_region);
},
.draw_texture =
[](void *self, const cbindgen_private::DrawTextureArgs *texture,
const cbindgen_private::PhysicalRegion *clip) {
auto *buffer = reinterpret_cast<TargetPixelBuffer<PixelType> *>(self);
auto clip_region = PhysicalRegion { *clip };
return buffer->draw_texture(texture, clip_region);
return buffer->draw_texture(*texture, clip_region);
}
};
}