new: 初步完成了textui的基本显示功能

kernel/lib/libUI/textui-render.c

@@ -0,0 +1,155 @@
+#include "textui.h"
+#include <driver/uart/uart.h>
+
+#define WHITE 0x00ffffff  //白
+#define BLACK 0x00000000  //黑
+#define RED 0x00ff0000    //红
+#define ORANGE 0x00ff8000 //橙
+#define YELLOW 0x00ffff00 //黄
+#define GREEN 0x0000ff00  //绿
+#define BLUE 0x000000ff   //蓝
+#define INDIGO 0x0000ffff //靛
+#define PURPLE 0x008000ff //紫
+
+// 根据rgb计算出最终的颜色值
+#define calculate_color(r, g, b) ((((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff)) & 0x00ffffff)
+
+extern struct scm_ui_framework_t textui_framework;
+
+static void __textui_render_chromatic(uint16_t actual_line, uint16_t index, struct textui_char_chromatic_t *character);
+
+/**
+ * @brief 重新渲染整个虚拟行
+ *
+ * @param window 窗口结构体
+ * @param vline_id 虚拟行号
+ * @return int 错误码
+ */
+int textui_refresh_vline(struct textui_window_t *window, uint16_t vline_id)
+{
+    if (textui_is_chromatic(window->flags))
+        return textui_refresh_characters(window, vline_id, 0, window->chars_per_line);
+    else
+        return textui_refresh_characters(window, vline_id, 0, window->chars_per_line);
+}
+
+int textui_refresh_vlines(struct textui_window_t *window, uint16_t start, uint16_t count)
+{
+    char bufff[16] = {0};
+    // uart_send_str(COM1, "  BEGIN  ");
+    for (int i = start; i < window->vlines_num && count > 0; ++i, --count)
+    {
+        // sprintk(bufff, "[ 1fresh: %d ] ", i);
+        // uart_send_str(COM1, bufff);
+        textui_refresh_vline(window, i);
+    }
+    start = 0;
+    while (count>0)
+    {
+        // sprintk(bufff, "[ 2fresh: %d ] ", start);
+        // uart_send_str(COM1, bufff);
+        // sprintk(bufff, " index=%d ", (window->vlines.chromatic)[start].index);
+        // uart_send_str(COM1, bufff);
+        textui_refresh_vline(window, start);
+        ++start;
+        --count;
+    }
+    // uart_send_str(COM1, "  END  ");
+    return 0;
+}
+
+/**
+ * @brief 刷新某个虚拟行的连续n个字符对象
+ *
+ * @param window 窗口结构体
+ * @param vline_id 虚拟行号
+ * @param start 起始字符号
+ * @param count 要刷新的字符数量
+ * @return int 错误码
+ */
+int textui_refresh_characters(struct textui_window_t *window, uint16_t vline_id, uint16_t start, uint16_t count)
+{
+    if (window->id != __textui_get_current_window_id())
+        return 0;
+    // 判断虚拟行参数是否合法
+    if (unlikely(vline_id >= window->vlines_num && (start + count) > window->chars_per_line))
+        return -EINVAL;
+
+    // 计算虚拟行对应的真实行
+    int actual_line_id = (int)vline_id - window->top_vline;
+    if (actual_line_id < 0)
+        actual_line_id += __textui_get_actual_lines();
+    // 判断真实行id是否合理
+    if (unlikely(actual_line_id < 0 || actual_line_id >= __textui_get_actual_lines()))
+        return 0;
+
+    // 若是彩色像素模式
+    if (textui_is_chromatic(window->flags))
+    {
+        struct textui_vline_chromatic_t *vline = &(window->vlines.chromatic)[vline_id];
+        for (int i = 0; i < count; ++i)
+        {
+
+            __textui_render_chromatic(actual_line_id, start + i, &vline->chars[start + i]);
+        }
+    }
+
+    return 0;
+}
+
+/**
+ * @brief 渲染彩色字符
+ *
+ * @param actual_line 真实行的行号
+ * @param index 列号
+ * @param character 要渲染的字符
+ */
+static void __textui_render_chromatic(uint16_t actual_line, uint16_t index, struct textui_char_chromatic_t *character)
+{
+    /**
+     * @brief 在屏幕上指定位置打印字符
+     *
+     * @param x 左上角列像素点位置
+     * @param y 左上角行像素点位置
+     * @param FRcolor 字体颜色
+     * @param BKcolor 背景颜色
+     * @param font 字符的bitmap
+     */
+
+    // #if DEBUG
+    // uart_send(COM1, font);
+    // #endif
+
+    unsigned char *font_ptr = font_ascii[(uint8_t)character->c];
+    unsigned int *addr;
+    uint32_t *fb = (uint32_t *)textui_framework.buf->vaddr;
+    // uint32_t FRcolor = YELLOW;
+    uint32_t FRcolor = calculate_color(character->Fr, character->Fg, character->Fb);
+    // uint32_t BKcolor = BLACK;
+    uint32_t BKcolor = calculate_color(character->Br, character->Bg, character->Bb);
+
+    uint32_t x = index * TEXTUI_CHAR_WIDTH;
+    uint32_t y = actual_line * TEXTUI_CHAR_HEIGHT;
+
+    int testbit; // 用来测试某位是背景还是字体本身
+
+    for (int i = 0; i < TEXTUI_CHAR_HEIGHT; ++i)
+    {
+        // 计算出帧缓冲区的地址
+        addr = (uint32_t *)(fb + textui_framework.buf->width * (y + i) + x);
+
+        testbit = (1 << (TEXTUI_CHAR_WIDTH + 1));
+        for (int j = 0; j < TEXTUI_CHAR_WIDTH; ++j)
+        {
+            // 从左往右逐个测试相应位
+            testbit >>= 1;
+            if (*font_ptr & testbit)
+                *addr = FRcolor; // 字，显示前景色
+            else
+                *addr = BKcolor; // 背景色
+
+            ++addr;
+        }
+        ++font_ptr;
+    }
+}