skpaint_matrix_color_filter.cpp File Reference

#include "tools/fiddle/examples.h"

Go to the source code of this file.

Functions
	REG_FIDDLE (skpaint_matrix_color_filter, 256, 128, false, 3)

Function Documentation

REG_FIDDLE()

REG_FIDDLE	(	skpaint_matrix_color_filter	,
		256	,
		128	,
		false	,
		3
	)

Definition at line 4 of file skpaint_matrix_color_filter.cpp.

                                                            {
void f(SkCanvas* c, SkScalar x, SkScalar y, SkScalar colorMatrix[20]) {
    SkPaint paint;
    paint.setColorFilter(SkColorFilters::Matrix(colorMatrix));
    c->drawImage(image, x, y, SkSamplingOptions(), &paint);
}
void draw(SkCanvas* c) {
    c->scale(0.25, 0.25);
    SkScalar colorMatrix1[20] = {
        0, 1, 0, 0, 0,
        0, 0, 1, 0, 0,
        1, 0, 0, 0, 0,
        0, 0, 0, 1, 0};
    f(c, 0, 0, colorMatrix1);
 
    SkScalar grayscale[20] = {
        0.21f, 0.72f, 0.07f, 0.0f, 0.0f,
        0.21f, 0.72f, 0.07f, 0.0f, 0.0f,
        0.21f, 0.72f, 0.07f, 0.0f, 0.0f,
        0.0f,  0.0f,  0.0f,  1.0f, 0.0f};
    f(c, 512, 0, grayscale);
}
}  // END FIDDLE