test in progress

Core/ST7735/UI/monoimg.c

@@ -0,0 +1,52 @@
+#include <stdint.h>
+#include "monoimg.h"
+
+#define max(a,b) ((a) >= (b) ? (a) : (b))
+#define min(a,b) ((a) <= (b) ? (a) : (b))
+
+uint8_t mimg_get_pixel_unsafe(const uint8_t *img, uint8_t x, uint8_t y) {
+    // MVLSB format
+    uint8_t width = img[0] + 1;
+    uint16_t index = (y >> 3) * width + x + 2;
+    uint8_t offset = y & 0x07;
+    uint8_t value = (img[index] >> offset) & 0x01;
+    return value; // return 1 or 0
+}
+
+uint8_t mimg_get_pixel(const uint8_t *img, uint16_t x, uint16_t y) {
+    // MVLSB format
+    uint8_t width = img[0] + 1;
+    uint8_t height = img[1] + 1;
+    if (x >= width || y >= height) {
+        return 0;
+    }
+    return mimg_get_pixel_unsafe(img, (uint8_t)x, (uint8_t)y);
+}
+
+void mimg_draw(mimg_FunctionSetPixel set_pixel, uint16_t x, uint16_t y, uint16_t color, const uint8_t *img, mimg_Area area) {
+    uint8_t width_s1 = img[0]; // width - 1
+    uint8_t height_s1 = img[1]; // height - 1
+    uint8_t ix = min(area.x, width_s1);
+    uint8_t iy = min(area.y, height_s1);
+    uint8_t iw = min(area.w, width_s1 - ix + 1);
+    uint8_t ih = min(area.h, height_s1 - iy + 1);
+    uint8_t off_x, off_y;
+    for (off_y = 0; off_y < ih; off_y ++) {
+        for (off_x = 0; off_x < iw; off_x ++) {
+            if (mimg_get_pixel_unsafe(img, ix + off_x, iy + off_y)) {
+                set_pixel(x + off_x, y + off_y, color);
+            }
+        }
+    }
+}
+
+mimg_Area mimg_get_tile_area(const uint8_t *img, uint8_t cols, uint8_t rows, uint8_t index) {
+    uint8_t width = img[0] + 1;
+    uint8_t height = img[1] + 1;
+    mimg_Area area;
+    area.w = width / cols;
+    area.h = height / rows;
+    area.y = (index / cols) * area.h;
+    area.x = (index % cols) * area.w;
+    return area;
+}

Core/ST7735/UI/monoimg.h

@@ -0,0 +1,19 @@
+#pragma once
+#include <stdint.h>
+
+typedef void (*mimg_FunctionSetPixel)(uint16_t x, uint16_t y, uint16_t color);
+typedef struct mimg_Area
+{
+    uint8_t x;
+    uint8_t y;
+    uint8_t w;
+    uint8_t h;
+} mimg_Area;
+
+
+/** get a pixel from img, return 1 or 0 */
+uint8_t mimg_get_pixel(const uint8_t *img, uint16_t x, uint16_t y);
+/** draw a part of img {ix, iy, iw, ih} , at (x, y) with color */
+void mimg_draw(mimg_FunctionSetPixel set_pixel, uint16_t x, uint16_t y, uint16_t color, const uint8_t *img, mimg_Area area);
+/** calc tile area */
+mimg_Area mimg_get_tile_area(const uint8_t *img, uint8_t cols, uint8_t rows, uint8_t index);

Core/ST7735/UI/ui.c

@@ -0,0 +1,26 @@
+#include <stdint.h>
+#include "Images/digi18x32.h"
+#include "monoimg.h"
+#include "st7735.h"
+
+void ui_text_number18x32(uint32_t num, uint16_t x, uint16_t y, uint16_t color) {
+    uint32_t tmp = num;
+    uint32_t div = 1;
+    uint8_t num_count = 0;
+    while (tmp > 0) {
+        tmp = tmp / 10;
+        num_count ++;
+        div = div * 10;
+    }
+    div = div / 10;
+    while (div > 0) {
+        tmp = (num / div) % 10;
+        printf("div: %d x: %d tmp: %d\n", div, x, tmp);
+        mimg_Area area = mimg_get_tile_area(IMG_DIGI_18_32, 10, 1, tmp);
+        mimg_draw(ST7735_DrawPixel, x, y, color, IMG_DIGI_18_32, area);
+        x = x + 18;
+        div = div / 10;
+    }
+}
+
+// TODO: 绘制文字的方法

Core/ST7735/UI/ui.h

@@ -0,0 +1,4 @@
+#pragma once
+#include <stdint.h>
+
+void ui_text_number18x32(uint32_t num, uint16_t x, uint16_t y, uint16_t color);