class AbstractPainterRGB565 : public AbstractPainter
{
public:
static const uint16_t RMASK = 0xF800;
static const uint16_t GMASK = 0x07E0;
static const uint16_t BMASK = 0x001F;
AbstractPainterRGB565()
{
assert(HAL::lcd().bitDepth() == 16 && "The chosen painter only works with 16bpp displays");
}
virtual ~AbstractPainterRGB565() {}
virtual void render(uint8_t* ptr, int x, int xAdjust, int y, unsigned count, const uint8_t* covers);
FORCE_INLINE_FUNCTION uint16_t mixColors(uint16_t newpix, uint16_t bufpix, uint16_t alpha, uint16_t shift)
{
return mixColors(newpix & RMASK, newpix & GMASK, newpix & BMASK, bufpix, alpha, shift);
}
FORCE_INLINE_FUNCTION uint16_t mixColors(uint16_t R, uint16_t G, uint16_t B, uint16_t bufpix, uint16_t alpha, uint16_t shift)
{
return (RMASK & ((((R - (bufpix & RMASK)) * alpha) >> shift) + (bufpix & RMASK))) |
(GMASK & ((((G - (bufpix & GMASK)) * alpha) >> shift) + (bufpix & GMASK))) |
(BMASK & ((((B - (bufpix & BMASK)) * alpha) >> shift) + (bufpix & BMASK)));
}
protected:
virtual bool renderInit()
{
return true;
}
virtual bool renderNext(uint8_t& red, uint8_t& green, uint8_t& blue, uint8_t& alpha) = 0;
virtual void renderPixel(uint16_t* p, uint8_t red, uint8_t green, uint8_t blue);
int currentX;
int currentY;
};
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touchgfx::AbstractPainterRGB565 class
@class AbstractPainterRGB565 AbstractPainterRGB565.hpp touchgfx/widgets/canvas/AbstractPainterRGB565.hpp A Painter that will paint using a color and an alpha value. The AbstractPainterRGB565 class allows a shape to be filled with a given color and alpha value. This allows transparent, anti-aliased elements to be drawn. @see AbstractPainter
Syntax
Fields
RMASK
No summary provided. Read more...
GMASK
No summary provided. Read more...
BMASK
No summary provided. Read more...
currentX
No summary provided. Read more...
currentY
No summary provided. Read more...
Methods
render()
No summary provided. Read more...
mixColors()
@fn FORCE_INLINE_FUNCTION uint16_t AbstractPainterRGB565::mixColors(uint16_t newpix, uint16_t bufpix, uint16_t alpha, uint16_t shift) Mix colors. Mix colors from a new pixel and a buffer pixel with the given alpha applied to the new pixel. Read more...
mixColors()
@fn FORCE_INLINE_FUNCTION uint16_t AbstractPainterRGB565::mixColors(uint16_t newpix, uint16_t bufpix, uint16_t alpha, uint16_t shift) Mix colors. Mix colors from a new pixel and a buffer pixel with the given alpha applied to the new pixel. Read more...
renderInit()
@fn virtual bool AbstractPainterRGB565::renderInit() Initialize rendering of a single scan line of pixels for the render. Initialize rendering of a single scan line of pixels for the render. Read more...
renderNext()
@fn virtual bool AbstractPainterRGB565::renderNext(uint8_t& red, uint8_t& green, uint8_t& blue, uint8_t& alpha) = 0; Get the color of the next pixel in the scan line. Get the color of the next pixel in the scan line. Read more...
renderPixel()
@fn virtual void AbstractPainterRGB565::renderPixel(uint16_t* p, uint8_t red, uint8_t green, uint8_t blue); Renders the pixel. Renders the pixel into the frame buffer. The colors are reduced from 8,8,8 to 5,6, 5. Read more...
Examples
touchgfx::AbstractPainterRGB565 is referenced by 3 libraries and example projects.References
| Location | Referrer | Scope | Text |
|---|---|---|---|
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