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49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "gl_color.h"
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#include "colors.h"
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const gl_color16_t* gl_color16_gradient_a4(gl_color_t fg_color,
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gl_color_t bg_color) {
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static gl_color16_t cache[16] = {0};
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if (gl_color_to_color16(bg_color) != cache[0] ||
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gl_color_to_color16(fg_color) != cache[15]) {
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for (int alpha = 0; alpha < 16; alpha++) {
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cache[alpha] = gl_color16_blend_a4(fg_color, bg_color, alpha);
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}
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}
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return (const gl_color16_t*)&cache[0];
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}
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const gl_color32_t* gl_color32_gradient_a4(gl_color_t fg_color,
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gl_color_t bg_color) {
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static gl_color32_t cache[16] = {0};
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if (bg_color != gl_color32_to_color(cache[0]) ||
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fg_color != gl_color32_to_color(cache[15])) {
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for (int alpha = 0; alpha < 16; alpha++) {
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cache[alpha] = gl_color32_blend_a4(fg_color, bg_color, alpha);
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}
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}
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return (const gl_color32_t*)&cache[0];
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} |