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46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include "applib/ui/layer.h"
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#include "applib/ui/rotate_bitmap_layer.h"
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#include "applib/graphics/gtypes.h"
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/**
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A pair of images, one drawn white-transparent, the other black-transparent
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used to draw a single image which has white, black, and transparent regions
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**/
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typedef struct {
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Layer layer;
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RotBitmapLayer white_layer;
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RotBitmapLayer black_layer;
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} RotBmpPairLayer;
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//! white and black *must* have the same dimensions, and *shouldn't* have any overlapp of each other
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void rotbmp_pair_layer_init(RotBmpPairLayer *pair, GBitmap *white, GBitmap *black);
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void rotbmp_pair_layer_deinit(RotBmpPairLayer *pair);
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void rotbmp_pair_layer_set_angle(RotBmpPairLayer *pair, int32_t angle);
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void rotbmp_pair_layer_increment_angle(RotBmpPairLayer *pair, int32_t angle_change);
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void rotbmp_pair_layer_set_src_ic(RotBmpPairLayer *pair, GPoint ic);
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//! exchanges black with white
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void rotbmp_pair_layer_inver_colors(RotBmpPairLayer *pair);
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