skpaint_color_table_filter.cpp File Reference

#include "tools/fiddle/examples.h"

Go to the source code of this file.

Functions
	REG_FIDDLE (skpaint_color_table_filter, 256, 256, false, 3)

Function Documentation

REG_FIDDLE()

REG_FIDDLE	(	skpaint_color_table_filter	,
		256	,
		256	,
		false	,
		3
	)

Definition at line 4 of file skpaint_color_table_filter.cpp.

                                                           {
void draw(SkCanvas* canvas) {
    canvas->scale(0.5, 0.5);
    uint8_t ct[256];
    for (int i = 0; i < 256; ++i) {
        int x = (i - 96) * 255 / 64;
        ct[i] = x < 0 ? 0 : x > 255 ? 255 : x;
    }
    SkPaint paint;
    paint.setColorFilter(SkColorFilters::TableARGB(nullptr, ct, ct, ct));
    canvas->drawImage(image, 0, 0, SkSamplingOptions(), &paint);
}
}  // END FIDDLE