71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
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// Copyright 2020 Espressif Systems (Shanghai) Co. Ltd.
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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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#include "stdint.h"
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#include "esp_log.h"
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#include "screen_utility.h"
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static const char *TAG = "screen utility";
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void scr_utility_apply_offset(const scr_handle_t *lcd_handle, uint16_t res_hor, uint16_t res_ver, uint16_t *x0, uint16_t *y0, uint16_t *x1, uint16_t *y1)
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{
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scr_dir_t dir = lcd_handle->dir;
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if (SCR_DIR_MAX < dir) {
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dir >>= 5;
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}
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uint16_t xoffset=0, yoffset=0;
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switch (dir) {
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case SCR_DIR_LRTB:
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xoffset = lcd_handle->offset_hor;
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yoffset = lcd_handle->offset_ver;
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break;
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case SCR_DIR_LRBT:
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xoffset = lcd_handle->offset_hor;
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yoffset = res_ver - lcd_handle->offset_ver - lcd_handle->original_height;
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break;
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case SCR_DIR_RLTB:
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xoffset += res_hor - lcd_handle->offset_hor - lcd_handle->original_width;
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yoffset += lcd_handle->offset_ver;
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break;
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case SCR_DIR_RLBT:
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xoffset = res_hor - lcd_handle->offset_hor - lcd_handle->original_width;
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yoffset = res_ver - lcd_handle->offset_ver - lcd_handle->original_height;
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break;
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case SCR_DIR_TBLR:
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xoffset = lcd_handle->offset_ver;
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yoffset = lcd_handle->offset_hor;
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break;
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case SCR_DIR_BTLR:
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yoffset = lcd_handle->offset_hor;
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xoffset = res_ver - lcd_handle->offset_ver - lcd_handle->original_height;
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break;
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case SCR_DIR_TBRL:
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yoffset += res_hor - lcd_handle->offset_hor - lcd_handle->original_width;
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xoffset += lcd_handle->offset_ver;
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break;
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case SCR_DIR_BTRL:
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yoffset = res_hor - lcd_handle->offset_hor - lcd_handle->original_width;
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xoffset = res_ver - lcd_handle->offset_ver - lcd_handle->original_height;
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break;
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default: break;
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}
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ESP_LOGD(TAG, "dir=%d, offset=(%d, %d)", dir, xoffset, yoffset);
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*x0 += xoffset;
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*x1 += xoffset;
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*y0 += yoffset;
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*y1 += yoffset;
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}
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